(19)
(11)EP 3 561 907 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
17.02.2021 Bulletin 2021/07

(21)Application number: 18851165.3

(22)Date of filing:  24.08.2018
(51)Int. Cl.: 
H01M 2/20  (2006.01)
H01M 2/34  (2006.01)
H01M 10/42  (2006.01)
H01M 10/48  (2006.01)
H01M 2/10  (2006.01)
(86)International application number:
PCT/KR2018/009785
(87)International publication number:
WO 2019/045368 (07.03.2019 Gazette  2019/10)

(54)

BATTERY MODULE AND MANUFACTURING METHOD THEREFOR

BATTERIEMODUL UND HERSTELLUNGSVERFAHREN DAFÜR

MODULE DE BATTERIES ET SON PROCÉDÉ DE FABRICATION


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 29.08.2017 KR 20170109543

(43)Date of publication of application:
30.10.2019 Bulletin 2019/44

(73)Proprietor: LG Chem, Ltd.
Seoul 07336 (KR)

(72)Inventors:
  • YUN, Ji Ho
    Daejeon 34122 (KR)
  • KIM, Sang Jin
    Daejeon 34122 (KR)

(74)Representative: Plasseraud IP 
66, rue de la Chaussée d'Antin
75440 Paris Cedex 09
75440 Paris Cedex 09 (FR)


(56)References cited: : 
EP-A1- 2 475 066
JP-A- 2017 069 098
KR-A- 20160 102 725
US-A1- 2012 251 849
EP-A1- 2 544 263
JP-B2- 3 863 693
KR-B1- 100 971 368
US-A1- 2012 251 849
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] The present disclosure relates to a battery module and a manufacturing method therefor, and more particularly, to a batter module and a manufacturing method therefor, in which an electrode terminal and a connector are coupled through a small number of times of welding.

    BACKGROUND ART



    [0002] The lithium secondary battery, as a unit cell constituting a battery pack, has flexibility, a relatively free shape, a small weight, and excellent safety, and thus has increasing demand as a power source for mobile electronic apparatuses, such as smart phones, camcorders, and laptop computers.

    [0003] In addition, the shape of the battery module is classified according to the shape of a battery case. When an electrode assembly is embedded in a cylindrical or rectangular metal can, the battery module is classified into a cylindrical battery module or rectangular battery module, and when the electrode assembly is embedded in a pouch-type case of an aluminum sheet, the battery module is classified into a pouch-type battery module.

    [0004] In addition, the electrode assembly contained in the battery case is provided as a structure including a positive electrode, a negative electrode, and a separator inserted between the positive electrode and the negative electrode, and can thereby be charged/discharged, and the shape of the cylindrical electrode assembly is formed in a jelly-roll type in which a positive electrode, a separator, and a negative electrode which have long sheet-like shapes coated with an electrode active material are sequentially laminated and wound.

    [0005] Meanwhile, the cylindrical electrode assembly is applied to an E-Call service device that transmits, when an accident occurs, accident information through a sensor embedded in a smart phone or a vehicle, and the cylindrical electrode assembly is formed in a battery module composed of two battery cells.

    [0006] A conventional shape of such a battery module will be described with reference to FIG. 1.

    [0007] FIG. 1 is an inner structural view of a conventional battery module.

    [0008] Referring to FIG. 1, a conventional battery module has a structure in which two battery cells are coupled to an integrated connector provided with a thermistor and are connected to an external system. The integrated connector is provided in a form in which a first wire coupled to a positive (+) electrode terminal, a second wire coupled to a connection member connected between battery cells, and two wires, which are connected to a thermistor, are connected to a single connection terminal.

    [0009] In order to measure the voltage of the battery cell, a wire should be connected to a negative (-) electrode terminal, and in order to be connected to the negative (-) electrode terminal, a single wire is further required. Thus, rather than adding a wire, a thermistor having a pair of leads one of which has a short length was used, and a wire shorter than a common length was provided to a connection terminal corresponding to the thermistor.

    [0010] However, such a configuration requires four times of soldering, and the costs of the thermistor one lead of which has a short length is expensive, whereby a problem of increasing process time and process costs occurs.

    [0011] Thus, a method for reducing the process time and costs required for the process is being demanded.

    [0012] Document EP2475066-A1 discloses a battery module comprising a pair of cylindrical battery cells, a pair of PTC elements, and a connection member configured to electrically connect the positive and the negative electrode terminals of the battery cells.

    [Patent document]



    [0013] (Patent Document 1) Korean Patent Laid-open Publication No. 10-2012-0073195

    DISCLOSURE OF THE INVENTION


    TECHNICAL PROBLEM



    [0014] The present invention provides a battery module, which can be speedily produced and is formed in a structure in which the costs for production are reduced, and a manufacturing method therefor.

    TECHNICAL SOLUTION



    [0015] In accordance with claim 1, a battery module, to which a connector including a thermistor is connected to a pair of battery cells, includes: a pair of cylindrical battery cells 110 each including a positive (+) electrode terminal and a negative (-) electrode terminal which face different directions and are arranged to be in close contact with or adjacent to each other; a pair of PTC elements 120 each provided to the positive (+) electrode terminal and the negative (-) electrode terminal which are on one side of the pair of cylindrical battery cells; a connection member 130 configured to electrically connect the positive (+) electrode terminal and the negative (-) electrode terminal which are on the other side of the pair of cylindrical battery cells; a connector 140 having a structure in which four wires are connected to a single connection terminal 141 and configured to electrically connect an external system and the pair of cylindrical battery cells via the connection terminal; and a coupling valley 150 provided in a region in which the pair of cylindrical battery cells are coupled to be in close contact with or adjacent to each other, wherein the PTC elements and the four wires are provided in the coupling valley.

    [0016] The connector includes: a first wire 142 connected to the PTC element 120 provided to the positive (+) electrode terminal; a second wire 143 connected to the connection member; and third and fourth wires 144 which are formed as two wires and connected to the PTC element provided to the negative (-) electrode terminal through a bonding part formed on a portion of one wire among the two wires.

    [0017] The third and fourth wires may form a single structure via the thermistor.

    [0018] The bonding part of the third and fourth wires may be formed by removing a predetermined range of a coating of the wires.

    [0019] The PTC elements may each be bent from an upper portion of the battery cell and extend along the side surface of the battery cell.

    [0020] The battery module may further include an insulating member on the PTC elements and the connection member.

    [0021] In accordance with claim 6, a method for manufacturing a battery module according to claim 1, in which a connector including a thermistor is connected to a battery module including a pair of battery cells, includes: a battery cell positioning step for positioning the battery cells on a jig configured to fix left and right side surfaces of the pair of battery cells; a PTC coupling step for respectively coupling the PTC elements to a positive electrode terminal and a negative electrode terminal which are positioned on one side of the pair of battery cells positioned on the jig; a connection member coupling step for coupling a connection member to the positive electrode terminal and the negative electrode terminal which are located on the other side of the pair of battery cells to which the PTC elements have been coupled; and a connector coupling step for coupling a connector to the battery module to which the connection member has been coupled.

    [0022] The connector coupling step may include: a positive (+) electrode terminal connecting step for connecting a first wire among four wires of the connector to the positive (+) electrode terminal of one battery cell provided on one side of the battery module; a connection member connecting step for connecting a second wire among the four wires of the connector to the connection member to which the pair of battery cells provided on the other side of the battery module are electrically connected; and a negative (-) electrode terminal connecting step for connecting third and fourth wires among the four wires of the connector to a negative (-) electrode terminal of another battery cell provided on the one side of the battery module.

    [0023] Prior to the connector coupling step, a predetermined range of coating on one wire among the third and fourth wires may be removed

    [0024] After the connector coupling step, an insulating member may be attached or coated on the pair of PTC elements and the connection member.

    ADVANTAGEOUS EFFECTS



    [0025] In accordance with a battery module and a method for manufacturing the same, a smaller number of times of welding is performed than that in related arts through a bonding part provided on one lead among a pair of leads of a thermistor, whereby the battery module can be speedily produced and production costs are reduced.

    [0026] In addition, components disposed inside the battery cell are located in a coupling valley provided by the coupling of cylindrical battery cells, whereby a predetermined thickness of the module can be obtained.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0027] 

    FIG. 1 is an inner structural view of a conventional battery module.

    FIG. 2 is an exploded perspective view of a battery module in accordance with an exemplary embodiment.

    FIG. 3 is a view of an inner coupled structure of a battery module in accordance with an exemplary embodiment.

    FIG. 4 is a structural view of a connector including a thermistor in accordance with an exemplary embodiment.

    FIG. 5 is a side view of a battery module in accordance with an exemplary embodiment.

    Fig. 6 is a flowchart of a method for manufacturing a battery module in accordance with an exemplary embodiment.


    MODE FOR CARRYING OUT THE INVENTION



    [0028] The present invention is defined by the features of claims 1 and 6, and relates to a battery module and its manufacturing method. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not restricted or limited by the exemplary embodiments. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art.

    <Embodiment 1>



    [0029] Hereinafter a battery module in accordance with an exemplary embodiment will be described.

    [0030] A battery module in accordance with an exemplary embodiment is more speedily produced and allows production costs to be reduced in such a way that a connector including a thermistor having a bonding part is connected to a pair of cylindrical battery cells.

    [0031] FIG. 2 is an exploded perspective view of a battery module in accordance with an exemplary embodiment.

    [0032] FIG. 3 is a view of an inner coupled structure of a battery module in accordance with an exemplary embodiment.

    [0033] Referring to FIGS. 2 and 3, a battery module 100 in accordance with an exemplary embodiment has a configuration in which a connector including a thermistor is connected to a pair of battery cells. The battery module 100 is configured to include: a pair of battery cells 110 each having a positive (+) electrode terminal and a negative (-) electrode terminal which face directions different from each other and arranged to be in close contact with or adjacent to each other; a pair of PTC elements 120 respectively provided on the positive (+) electrode terminal and the negative (-) electrode terminal which are on the same side of the pair of battery cells; a connection member 130 which electrically connect the positive (+) electrode terminal and the negative (-) electrode terminal which are on the other side of the pair of cylindrical battery cells; a connector 140 having a structure in which four wires are connected to a single connection terminal 141 and configured to electrically connect an external system and the pair of battery cells through the connection terminal; and a coupling valley 150 provided in a region in which the pair of cylindrical battery cells are coupled to be in close into close contact with or adjacent to each other.

    [0034] In addition, the PTC elements 120 and the four wires of the connector are provided in the coupling valley 150.

    [0035] The configurations of the battery module 100 will be described below in more detail.

    [0036] The battery cells 110 are a pair of components in each of which the positive (+) electrode terminal and the negative (-) electrode terminal face directions different from each other and which are arranged to be in close contact with or adjacent to each other, are formed in cylindrical battery cells, and have the directions of the electrode terminals made different so that the pair of battery cells may easily be connected in series.

    [0037] In addition, the PTC elements 120 are components respectively provided to the positive (+) electrode terminals and the negative (-) electrode terminals which are on one side of the pair of battery cells, and are formed in shapes of being bent from an upper portion of the battery cells and extending to the side surfaces of the battery cells.

    [0038] In addition, side surface parts extending on the side surfaces of the PTC elements 120 are formed in a shape to be in close contact with the battery cells, and are located in a remaining space in a circular shape, and thus do not change the thickness and height of the battery module.

    [0039] In addition, since an insulating member 160 should be additionally attached on upper portions of the PTC elements 120, wires of the connector 140 may easily be connected to electrode terminals, respectively.

    [0040] In addition, when an overcurrent flows, the PTC elements 120 disconnect a current path to protect the battery module from an abnormal state.

    [0041] In addition, the PTC elements 120 may cause a short when located in the same side surface, and thus are provided to be located on surfaces opposed to each other.

    [0042] For example, when one PTC element is located on the front surface, the other PTC element is located on the rear surface so that portions connected to each other do not touch each other.

    [0043] In addition, the connection member 130 is a component which electrically connects the positive (+) electrode terminal and the negative (-) electrode terminal which are on the other side of the pair of battery cells, and in general, formed of a metal plate with excellent electrical conductivity.

    [0044] In addition, the connection member 130 is further provided with a protrusion part for facilitating bonding with the wires, and is further provided with the insulating member 160 outside the connection member to make it possible to form an insulating state and to allow the pair of battery cells 110 to be firmly fixed.

    [0045] In addition, the connector 140 has a structure in which four wires are connected to a single connection terminal 141, and is a component which electrically connects an external system and the pair of battery cells. The connector will be described in detail with reference to FIG. 4.

    [0046] Fig. 4 is a structural view of a connector including a thermistor in accordance with an exemplary embodiment.

    [0047] Referring to FIG. 4, the connector 140 is configured to include: a first wire 142 connected to the PTC element 120 provided to the positive (+) electrode terminal; a second wire 143 connected to the connection member; and third and fourth wires 144 which are formed as two wires and connected to the PTC element provided to the negative (-) electrode terminal through a bonding part formed on a portion of one wire among the two wires.

    [0048] More specifically, the connection terminal 141 is a component in which one side of the four wires is fixed to form a single connector, and the side opposed to the side on which wires are fixed is formed in a shape of a terminal which can be electrically connected to an external system.

    [0049] In addition, the first wire 142 is a component connected to the positive (+) electrode terminal of a single battery cell provided on one side of the battery module, and the second wire 143 is a component connected to a path of the current flowing between the positive (+) electrode terminals and the negative (-) electrode terminals of the pair of battery cells provided on the other side of the battery module. The first and second wires have different colors so as to be distinguished from each other and have different lengths according to respective coupling positions.

    [0050] More strictly describing, the first wire 142 is bonded to an upper surface of the side surface part of the PTC element 120 which is provided to one side of the battery module and serves as the positive (+) electrode terminal, and the second wire 143 is bonded to the protrusion part of the connection member 130 which is provided on the other side of the battery module and connects the positive (+) electrode terminal and the negative (-) electrode terminal.

    [0051] In addition, one side of the third and fourth wires 144 is connected to the connection terminal 141 and the other side is connected to each other via a thermistor 144_1 for measuring the temperature of the battery cells, and the thermistor 144_1 includes leads having the same length.

    [0052] This configuration is for providing an integrated type connector including the thermistor 144_1. In related arts, a thermistor 144_1 having leads with different lengths are used, a short lead is connected to a negative electrode terminal of a battery cell to serve as a thermistor, and a wire at a position corresponding to the short lead extends from a connection terminal 141 and is connected to the negative electrode terminal of the battery cell, whereby electrical connection of a battery module is achieved.

    [0053] However, in the related arts, although the short lead and the wire corresponding to the position of the short lead are connected to the negative electrode terminal of the same battery cell, there is difficulty in that welding is performed separately.

    [0054] To solve the above problem, in the exemplary embodiment, a bonding part 144_2 is provided on a portion of the third and fourth wires 144 to allow the bonding part to be connected at once to the negative electrode terminal of the battery cell.

    [0055] The bonding part 144 2 is a component provided by removing a predetermined range in the coating of the wire, and accordingly, an additional wire is not required on the position corresponding to the short lead in the related arts, whereby the number of times of welding and operators and production costs may be reduced.

    [0056] In addition, the thermistor having a short lead in the related arts are more expensive than a thermistor having the same lead length, the material costs may also be reduced.

    [0057] In addition, the third and fourth wires 144 are provided on one side of the battery module, and allows the bonding part 144_2 to be bonded on upper surfaces of the side surface parts of the PTC elements 120 which serve as the negative (-) electrode terminals. Accordingly, connection to the thermistor and the negative (-) electrode terminal may be performed at once.

    [0058] In addition, and insulating member is further attached or coated to a portion at which the wire comes into contact with the pair of battery cells and may thereby prevent a short occurring from the inside.

    [0059] In addition, the PTC elements 120 and the wires of the connector 140 are attached to the pair of battery cells inside the coupling valley 150, and the structure of the coupling valley 150 will be described in more detail with reference to FIG. 5.

    [0060] FIG. 5 is a side view of a battery module in accordance with an exemplary embodiment.

    [0061] Referring to FIG. 5, the side surface parts of the PTC elements 120 are positioned to be misaligned with each other, and when the side surface part of the PTC element 120 of positive (+) electrode terminal of one battery cell is located at a lower right portion, the side surface part of the PTC element 120 is allowed to be positioned in the coupling valley 150. In addition, the first wire 142 is also allowed to be located on the upper surface of the side surface part of the PTC 120 located in the coupling valley 150.

    [0062] In addition, the side surface part of the PTC element 120 of the negative (-) electrode terminal of the other battery cell is located in an upper left portion of the coupling valley 150, and the third and fourth wires 144 are located on the upper surface of the side surface part.

    [0063] Also, the second wire 143 connected to the connection member 130 is also located in an upper right portion of the coupling valley 150, thereby allowing a predetermined thickness of the battery module to be obtained.

    <Embodiment 2>



    [0064] Next, a method for manufacturing a battery module in accordance with an exemplary embodiment will be described.

    [0065] A method for manufacturing a battery module in accordance with the exemplary embodiment can produce a battery module more speedily than the four times of boding in the related arts because a connector provided with four wires is connected, by means of three times of bonding, to a battery module in which a PTC and a connection member are coupled.

    [0066] Fig. 6 is a flowchart of a method for manufacturing a battery module in accordance with an exemplary embodiment.

    [0067] Referring to FIG. 6, in a method for manufacturing a battery module in accordance with the exemplary embodiment, firstly, battery cells are positioned on a jig for fixing the left and right side surfaces of the pair of battery cells (battery cell positioning step: S100), and then PTC elements are respectively coupled to positive and negative electrode terminals located on one side of the pair of battery cells positioned on the jig (PTC coupling step: S200).

    [0068] A connection member is coupled to the positive and negative electrode terminals located on the other side of the pair of battery cells to which the PTC elements have been coupled (connection member coupling step: S300), and a connector is coupled to the battery module to which the connection member has been coupled (connector coupling step: S400).

    [0069] Each of the steps of the method for manufacturing the battery module will be described below in more detail.

    [0070] The battery cell positioning step S100 is a step for positioning the battery cells on a jig for fixing the left and right side surfaces of the pair of battery cells, wherein the separate jig for fixing the pair of battery cells is provided to allow the battery module to be stably manufactured.

    [0071] In addition, the PTC coupling step S200 is a step for respectively coupling the PTC elements on to the positive and negative electrode terminals located on one side of the pair of battery cells positioned on the jig, wherein the PTC elements are located so that the side surface parts of the PTC elements face different directions, are then bonded to the upper portions of the positive electrode terminal and the negative electrode terminal, respectively. In addition, at this point, the side surface parts of the PTC elements are also bonded to portions of the side surfaces of the battery cells.

    [0072] In addition, the connection member coupling step S300 is a step for coupling the connection member to the positive and negative electrode terminals located on the other side of the pair of battery cells to which the PTC elements have been coupled, wherein the positive and negative electrode terminals are allowed to be electrically connected through the single connection member.

    [0073] In addition, the connector coupling step S400 is a step for coupling the connector to the battery module to which the connection member has been coupled, and more specifically, a first wire among four wires of the connector is connected to the positive (+) electrode terminal of one battery cell provided on one side of the battery module (positive (+) electrode terminal connecting step).

    [0074] In addition, a second wire among the four wires of the connector is connected to the connection member to which the pair of battery cells provided on the other side of the battery module are electrically connected (connection member connection step), and third and fourth wires among the four wires of the connector are connected to the negative (-) electrode terminal of the other battery cell provided on one side of the battery module (negative (-) electrode terminal connecting step).

    [0075] More specifically, the positive (+) electrode terminal connection step is a step for bonding the first wire to the PTC element connected to the positive (+) electrode terminal of the battery cell, and the first wire is welded to the side surface part of the PTC element.

    [0076] In addition, the connection member connecting step is a step for bonding the second wire to the connection member, wherein the second wire is welded to the protrusion part of the connection member.

    [0077] In addition, the negative (-) electrode terminal connecting step is a step for coupling the third and fourth wires to the PTC element connected to the negative (-) electrode terminal of the battery cell, and prior to the step, a step for removing a predetermined range of coating of one wire among the third and fourth wires is performed.

    [0078] Then, the wire in which the predetermined range of coating has been removed is welded to the side surface part of the PTC element.

    [0079] After the connector coupling step S400 is completed, an insulating member is attached or coated on the pair of PTC elements and the upper portion of connection member to prevent occurrence of a short from the outside, and an insulating member is also attached or coated on a portion at which the wires of the connector and the battery cells come into contact to prevent a short from the inside.

    [Description of Symbols]



    [0080] 
    100:
    Battery Module
    110:
    One Pair of Battery Cells
    120:
    One Pair of PTC Elements
    130:
    Connection Member
    140:
    Connector
    141:
    Connection Terminal
    142:
    First Wire
    143:
    Second Wire
    144:
    Third and Fourth Wires
    144 1:
    Thermistor
    144_2:
    Bonding Part
    150:
    Coupling Valley
    160:
    Insulating Member



    Claims

    1. A battery module (100) comprising:

    a pair of cylindrical battery cells (110) each comprising a positive (+) electrode terminal and a negative (-) electrode terminal which face different directions and are arranged to be in close contact with or adjacent to each other;

    a pair of PTC elements (120) each provided to the positive (+) electrode terminal and the negative (-) electrode terminal which are on one side of the pair of cylindrical battery cells;

    a connection member (130) configured to electrically connect the positive (+) electrode terminal and the negative (-) electrode terminal which are on the other side of the pair of cylindrical battery cells;

    characterized in that

    a connector (140), comprising a thermistor (144_1), is connected to the pair of battery cells (110), the connector having a structure in which four wires are connected to a single connection terminal (141) and configured to electrically connect an external system and the pair of cylindrical battery cells via the connection terminal (141); and

    a coupling valley (150) provided in a region in which the pair of cylindrical battery cells are coupled to be in close contact with or adjacent to each other,

    wherein the PTC elements and the four wires are provided in the coupling valley (150), wherein the connector (140) comprising:

    a first wire (142) connected to the PTC element (120) provided to the positive (+) electrode terminal;

    a second wire (143) connected to the connection member (130); and

    third and fourth wires (144) which are formed as two wires and connected to the PTC element provided to the negative (-) electrode terminal through a bonding part (144_2) formed on a portion of one wire among the two wires.


     
    2. The battery module (100) of claim 1, wherein the third and fourth wires (144) form a single structure via the thermistor (144_1).
     
    3. The battery module (100) of claim 1, wherein the bonding part (144_2) of the third and fourth wires (144) is formed by removing a predetermined range of a coating of the wires.
     
    4. The battery module (100) of claim 1, wherein the PTC elements are each bent from an upper portion of the battery cell and extend along the side surface of the battery cell.
     
    5. The battery module (100) of claim 1, further comprising an insulating member (160) on the PTC element and the connection member (130).
     
    6. A method for manufacturing a battery module (100) according to claim 1, in which a connector (140) comprising a thermistor (144_1) is connected to a battery module (100) comprising a pair of battery cells (110), the method comprising:

    a battery cell positioning step for positioning the battery cells on a jig configured to fix left and right side surfaces of the pair of battery cells (110;

    a PTC coupling step for respectively coupling a PTC elements to a positive electrode terminal and a negative electrode terminal which are positioned on one side of the pair of battery cells (110) positioned on the jig;

    a connection member coupling step for coupling a connection member (130) to the positive electrode terminal and the negative electrode terminal which are located on the other side of the pair of battery cells (110) to which the PTC element have been coupled; and

    a connector coupling step for coupling a connector (140) to the battery module (100) to which the connection member (130) has been coupled.


     
    7. The method for manufacturing a battery module (100) of claim 6, wherein the connector coupling step comprises:

    a positive (+) electrode terminal connecting step for connecting a first wire (142) among four wires of the connector (140) to the positive (+) electrode terminal of one battery cell provided on one side of the battery module (100);

    a connection member connecting step for connecting a second wire (143) among the four wires of the connector (140) to the connection member (130) to which the pair of battery cells (110) provided on the other side of the battery module (100) are electrically connected; and

    a negative (-) electrode terminal connecting step for connecting third and fourth wires (144) among the four wires of the connector (140) to a negative (-) electrode terminal of another battery cell provided on the one side of the battery module (100).


     
    8. The method for manufacturing a battery module (100) of claim 6, wherein prior to the connector coupling step, a predetermined range of coating on one wire among third and fourth wires (144) is removed.
     
    9. The method for manufacturing a battery module (100) of claim 6, wherein after the connector coupling step, an insulating member (160) is attached or coated on the pair of PTC elements (120) and the connection member (130).
     


    Ansprüche

    1. Batteriemodul (100), umfassend:

    ein Paar von zylindrischen Batteriezellen (110), welche jeweils einen positiven (+) Elektrodenanschluss und einen negativen (-) Elektrodenanschluss umfassen, welche in verschiedene Richtungen weisen und derart angeordnet sind, um miteinander in engem Kontakt zu sein oder zueinander benachbart zu sein;

    ein Paar von PTC-Elementen (120), welche jeweils an dem positiven (+) Elektrodenanschluss und an dem negativen (-) Elektrodenanschluss bereitgestellt sind, welche an einer Seite des Paares von zylindrischen Batteriezellen sind;

    ein Verbindungselement (130), welches dazu eingerichtet ist, den positiven (+) Elektrodenanschluss und den negativen (-) Elektrodenanschluss elektrisch zu verbinden, welche an der anderen Seite des Paares von zylindrischen Batteriezellen sind;

    dadurch gekennzeichnet, dass

    ein Connector (140), welcher einen Thermistor (144_1) umfasst, mit dem Paar von Batteriezellen (110) verbunden ist, wobei der Connector eine Struktur aufweist, in welcher vier Drähte mit einem einzelnen Verbindung-Anschluss (141) verbunden sind und dazu eingerichtet sind, ein externes System und das Paar von zylindrischen Batteriezellen über den Verbindung-Anschluss (141) elektrisch zu verbinden; und

    ein Kopplung-Tal (150), welches in einem Bereich bereitgestellt ist, in welchem das Paar von zylindrischen Batteriezellen gekoppelt sind, in engem Kontakt miteinander zu sein oder zueinander benachbart zu sein,

    wobei die PTC-Elemente und die vierte Drähte in dem Kopplung-Tal (150) bereitgestellt sind, wobei der Connector (140) umfasst:

    einen ersten Draht (142), welcher mit dem PTC-Element (120) verbunden ist, welches an dem positiven (+) Elektrodenanschluss bereitgestellt ist;

    einen zweiten Draht (143), welcher mit dem Verbindungselement (130) verbunden ist; und

    dritte und vierte Drähte (144), welche als zwei Drähte gebildet sind und mit dem PTC-Element, welches an dem negativen (-) Elektrodenanschluss bereitgestellt ist, durch einen Verbindungsteil (144_2) verbunden sind, welcher an einem Abschnitt eines Drahtes aus den beiden Drähten gebildet ist.


     
    2. Batteriemodul (100) nach Anspruch 1, wobei die dritten und vierten Drähte (144) eine einzelne Struktur über den Thermistor (144_1) bilden.
     
    3. Batteriemodul (100) nach Anspruch 1, wobei der Verbindungsteil (144_2) der dritten und vierten Drähte (144) durch Entfernen eines vorbestimmten Bereichs einer Beschichtung der Drähte gebildet ist.
     
    4. Batteriemodul (100) nach Anspruch 1, wobei die PTC-Elemente jeweils von einem oberen Abschnitt der Batteriezelle gebogen sind und sich entlang der Seitenfläche der Batteriezelle erstrecken.
     
    5. Batteriemodul (100) nach Anspruch 1, ferner umfassend ein isolierendes Element (160) an dem PTC-Element und dem Verbindungselement (130).
     
    6. Verfahren zum Herstellen eines Batteriemoduls (100) nach Anspruch 1, in welchem ein Connector (140), welcher einen Thermistor (144_1) umfasst, mit einem Batteriemodul (100) verbunden ist, welches ein Paar von Batteriezellen (110) umfasst, wobei das Verfahren umfasst:

    einen Batteriezellen-Positionierung-Schritt zum Positionieren der Batteriezellen an einer Vorrichtung, welche dazu eingerichtet ist, linke und rechte Seitenflächen des Paares von Batteriezellen (110) zu befestigen;

    einen PTC-Kopplung-Schritt zum entsprechenden Koppeln eines PTC-Elements mit einem positiven Elektrodenanschluss und einem negativen Elektrodenanschluss, welche an einer Seite des Paares von Batteriezellen (110) positioniert sind, positioniert an der Vorrichtung;

    einen Verbindungselement-Kopplung-Schritt zum Koppeln eines Verbindungselements (130) mit dem positiven Elektrodenanschluss und dem negativen Elektrodenanschluss, welche an der anderen Seite des Paares von Batteriezellen (110) angeordnet sind, mit welchem das PTC-Element gekoppelt worden ist; und

    einen Connector-Kopplung-Schritt zum Koppeln eines Connectors (140) mit dem Batteriemodul (100), mit welchem das Verbindungselement (130) gekoppelt worden ist.


     
    7. Verfahren zum Herstellen eines Batteriemoduls (100) nach Anspruch 6, wobei der Connector-Kopplung-Schritt umfasst:

    einen Verbindungsschritt eines positiven (+) Elektrodenanschlusses zum Verbinden eines ersten Drahtes (142) aus vier Drähten des Connectors (140) mit dem positiven (+) Elektrodenanschluss einer Batteriezelle, welche an einer Seite des Batteriemoduls (100) bereitgestellt ist;

    einen Verbindungselement-Verbindung-Schritt zum Verbinden eines zweiten Drahtes (143) aus den vier Drähten des Connectors (140) mit dem Verbindungselement (130), mit welchem das Paar von Batteriezellen (110), welche an der anderen Seite des Batteriemoduls (100) bereitgestellt sind, elektrisch verbunden werden; und

    einen Verbindung-Schritt eines negativen (-) Elektrodenanschlusses zum Verbinden von dritten und vierten Drähten (144) aus den vier Drähten des Connectors (140) mit einem negativen (-) Elektrodenanschluss einer anderen Batteriezelle, welche an der einen Seite des Batteriemoduls (100) bereitgestellt ist.


     
    8. Verfahren zum Herstellen eines Batteriemoduls (100) nach Anspruch 6, wobei vor dem Connector-Kopplung-Schritt ein vorbestimmter Bereich einer Beschichtung an einem Draht aus dritten und vierten Drähten (144) entfernt wird.
     
    9. Verfahren zum Herstellen eines Batteriemoduls (100) nach Anspruch 6, wobei nach dem Connector-Kopplung-Schritt ein isolierendes Element (160) an dem Paar von PTC-Elementen (120) und dem Verbindungselement (130) angebracht oder beschichtet wird.
     


    Revendications

    1. Module de batterie (100) comprenant :

    une paire de cellules de batterie cylindriques (110) comprenant chacune une borne d'électrode positive (+) et une borne d'électrode négative (-) qui sont face à des directions différentes et sont agencées pour être en contact étroit l'une avec l'autre ou adjacentes l'une à l'autre ;

    une paire d'éléments PTC (120) prévus chacun sur la borne d'électrode positive (+) et la borne d'électrode négative (-) qui sont sur un côté de la paire de cellules de batterie cylindriques ;

    un organe de connexion (130) configuré pour connecter électriquement la borne d'électrode positive (+) et la borne d'électrode négative (-) qui sont sur l'autre côté de la paire de cellules de batterie cylindriques ;

    caractérisé en ce que

    un connecteur (140), comprenant un thermistor (144_1), est connecté à la paire de cellules de batterie (110), le connecteur ayant une structure dans laquelle quatre fils électriques sont connectés à une seule borne de connexion (141) et configuré pour connecter électriquement un système externe et la paire de cellules de batterie cylindriques via la borne de connexion (141) ; et

    un creux de couplage (150) prévu dans une région dans laquelle la paire de cellules de batterie cylindriques sont couplées pour être en contact étroit l'une avec l'autre ou adjacentes l'une à l'autre,

    dans lequel les éléments PTC et les quatre fils électriques sont prévus dans le creux de couplage (150), dans lequel le connecteur (140) comprend :

    un premier fil électrique (142) connecté à l'élément PTC (120) prévu sur la borne d'électrode positive (+) ;

    un deuxième fil électrique (143) connecté à l'organe de connexion (130) ; et

    des troisième et quatrième fils électriques (144) qui sont formés comme deux fils électriques et connectés à l'élément PTC prévu sur la borne d'électrode négative (-) par le biais d'une partie de liaison (144_2) formée sur une portion d'un fil électrique parmi les deux fils électriques.


     
    2. Module de batterie (100) selon la revendication 1, dans lequel les troisième et quatrième fils électriques (144) forment une seule structure via le thermistor (144_1).
     
    3. Module de batterie (100) selon la revendication 1, dans lequel la partie de liaison (144_2) des troisième et quatrième fils électriques (144) est formée par retrait d'une plage prédéterminée d'un revêtement des fils électriques.
     
    4. Module de batterie (100) selon la revendication 1, dans lequel les éléments PTC sont fléchis chacun depuis une portion supérieure de la cellule de batterie et s'étendent le long de la surface de côté de la cellule de batterie.
     
    5. Module de batterie (100) selon la revendication 1, comprenant en outre un organe isolant (160) sur l'élément PTC et l'organe de connexion (130).
     
    6. Procédé de fabrication d'un module de batterie (100) selon la revendication 1, dans lequel un connecteur (140) comprenant un thermistor (144_1) est connecté à un module de batterie (100) comprenant une paire de cellules de batterie (110), le procédé comprenant :

    une étape de positionnement de cellules de batterie pour positionner les cellules de batterie sur un dispositif de montage configuré pour fixer des surfaces de côté gauche et droite de la paire de cellules de batterie (110) ;

    une étape de couplage PTC pour coupler respectivement des éléments PTC à une borne d'électrode positive et une borne d'électrode négative qui sont positionnées sur un côté de la paire de cellules de batterie (110) positionnées sur le dispositif de montage ;

    une étape de couplage d'organe de connexion pour coupler un organe de connexion (130) à la borne d'électrode positive et la borne d'électrode négative qui sont situées sur l'autre côté de la paire de cellules de batterie (110) auxquelles les éléments PTC ont été couplés ; et

    une étape de couplage de connecteur pour coupler un connecteur (140) au module de batterie (100) auquel l'organe de connexion (130) a été couplé.


     
    7. Procédé de fabrication d'un module de batterie (100) selon la revendication 6, dans lequel l'étape de couplage de connecteur comprend :

    une étape de connexion de borne d'électrode positive (+) pour connecter un premier fil électrique (142) parmi quatre fils électriques du connecteur (140) à la borne d'électrode positive (+) d'une cellule de batterie prévue sur un côté du module de batterie (100) ;

    une étape de connexion d'organe de connexion pour connecter un deuxième fil électrique (143) parmi les quatre fils électriques du connecteur (140) à l'organe de connexion (130) auquel la paire de cellules de batterie (110) prévues sur l'autre côté du module de batterie (100) sont connectées électriquement ; et

    une étape de connexion de borne d'électrode négative (-) pour connecter des troisième et quatrième fils électriques (144) parmi les quatre fils électriques du connecteur (140) à une borne d'électrode négative (-) d'une autre cellule de batterie prévue sur le côté du module de batterie (100).


     
    8. Procédé de fabrication d'un module de batterie (100) selon la revendication 6, dans lequel avant l'étape de couplage de connecteur, une plage prédéterminée de revêtement sur un fil électrique parmi les troisième et quatrième fils électriques (144) est retirée.
     
    9. Procédé de fabrication d'un module de batterie (100) selon la revendication 6, dans lequel après l'étape de couplage de connecteur, un organe isolant (160) est attaché ou revêtu sur la paire d'éléments PTC (120) et l'organe de connexion (130).
     




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    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description