(19)
(11)EP 3 382 790 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
04.11.2020 Bulletin 2020/45

(21)Application number: 17856749.1

(22)Date of filing:  27.09.2017
(51)International Patent Classification (IPC): 
H01M 10/6556(2014.01)
H01M 2/10(2006.01)
H01M 10/6557(2014.01)
H01M 10/613(2014.01)
H01M 2/02(2006.01)
(86)International application number:
PCT/KR2017/010742
(87)International publication number:
WO 2018/062863 (05.04.2018 Gazette  2018/14)

(54)

BATTERY MODULE HAVING COOLING CHANNEL, AND ASSEMBLING METHOD AND FRAME ASSEMBLY THEREOF

BATTERIEMODUL MIT KÜHLKANAL, HERSTELLUNGSVERFAHREN UND RAHMENZUSAMMENBAU DAFÜR

MODULE DE BATTERIE CONDUIT DE REFROIDISSEMENT, PROCÉDÉ DE FABRICATION ET FABRICATION D`ENCADREMENT


(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: 28.09.2016 KR 20160124854

(43)Date of publication of application:
03.10.2018 Bulletin 2018/40

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

(72)Inventors:
  • YOON, Ji-Su
    Daejeon 34122 (KR)
  • LEE, Yoon-Koo
    Daejeon 34122 (KR)
  • KANG, Dal-Mo
    Daejeon 34122 (KR)
  • RYU, Sang-Woo
    Daejeon 34122 (KR)
  • MUN, Jeong-O
    Daejeon 34122 (KR)
  • SEO, Sung-Won
    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- 2 497 145
EP-A2- 2 337 143
KR-A- 20120 137 792
KR-A- 20140 034 351
EP-A1- 2 763 214
JP-A- 2015 005 362
KR-A- 20130 086 678
KR-A- 20150 118 375
  
      
    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 more particularly, to a battery module having a cooling channel with an improved structure for allowing a cooling fluid to flow, and an assembling method and a frame assembly thereof.

    BACKGROUND ART



    [0002] Generally, a battery module has a structure including a plurality of cells connected in series and/or in parallel. The battery module generally includes a cell assembly having a plurality of cells arranged and stacked in one direction, and a frame having plates capable of surrounding the cell assembly.

    [0003] In the conventional battery module, when a cooling channel is separately designed for cooling the battery cells, the space occupied by the cooling channel is separately required, so it is difficult to simplify the structure and there is limit in capacity of cells to be mounted.

    [0004] In relation to the technology for cooling the battery module, Korean Unexamined Patent Publication No. 2011-0130312 discloses a battery cooling device having a structure in which spaces are formed among a plurality of tubes through which a cooling medium flows, and battery cells and cooling fins are inserted into the spaces not to contact the tubes. Another example of such arrangement can be found in EP 2 763 214 A1 for instance.

    [0005] Korean Patent Registration No. 10-0836398 discloses a supporting device for cooling a battery module, which includes a rectifying fin installed in an empty space between neighboring modules accommodated in the case so that a cooling wind introduced through an inlet port may smoothly flow. Additional examples of such arrangement can be found in EP 2 497 145 A1 or EP 2 337 143 A2 for instance.

    [0006] In addition, Korean Unexamined Patent Publication No. 2013-0105653 discloses a cooling device for a power battery pack, which includes rubber sheets composed of front and rear covers capable of changing the flow direction of a cooling water so as to give a path for allowing the cooling water to flow throughout the entire array.

    [0007] Although the above technologies have been proposed, the battery module according to the conventional art has a limitation in securing a space for installing a cooling channel, and a process cost is increased by adding separate components for installing the cooling channel.

    DISCLOSURE


    Technical Problem



    [0008] The present disclosure is designed to solve the problems of the related art, and therefore the present disclosure is directed to providing a battery module capable of securing a space for a cooling channel by using a pouch cell built in a battery cell, and an assembling method and a frame assembly thereof.

    [0009] The present disclosure is also directed to providing a battery module capable of connecting to another battery module by using the cooling channel, and an assembling method and a frame assembly thereof.

    Technical Solution



    [0010] A battery module according to claim 1 is provided.

    [0011] In the present disclosure, the battery module may further comprise a cooling hose disposed to communicate with the empty space.

    [0012] In the present disclosure, the battery module may further include a pair of end plates disposed at both ends of the cell assembly, and at any one of the pair of end plates, an end of the cooling hose may be drawn outwards.

    [0013] In the present disclosure, the cooling hose located at any one battery module may be coupled to the cooling hose located at another battery module so that different modules are connected in series.

    [0014] A method according to claim 3 as well as a frame assembly according to claim 4 are provided.

    Advantageous Effects



    [0015] According to the present disclosure, since the space for a cooling channel may be secured between adjacent cells by using the edge structure of the pouch cell included in the battery module, the battery module may have a simplified structure and may be manufactured with lower cost.

    [0016] In addition, since different modules may be connected back and forth by using a cooling hose, a pack plate for connecting modules is not separately needed.

    DESCRIPTION OF DRAWINGS



    [0017] The accompanying drawings illustrate a preferred embodiment of the present disclosure and together with the foregoing disclosure, serve to provide further understanding of the technical features of the present disclosure, and thus, the present disclosure is not construed as being limited to the drawing.

    FIG. 1 is a perspective view showing an appearance of a battery module according to an embodiment of the present disclosure.

    FIG. 2 is a cross-sectioned view of FIG. 1.

    FIG. 3 is a rear view of FIG. 1.

    FIG. 4 is a side view of FIG. 1.

    FIG. 5 is a perspective view showing that different battery modules are connected in series.

    FIG. 6 is an exploded perspective view showing a coupled structure of a portion C in FIG. 5.


    BEST MODE



    [0018] FIG. 1 is a perspective view showing an appearance of a battery module according to an embodiment of the present disclosure, and FIG. 2 is a cross-sectioned view of FIG. 1.

    [0019] Referring to FIGS. 1 and 2, a battery module according to an embodiment of the present disclosure includes a cell assembly 110 composed of a plurality of pouch cells 111, and a frame assembly having a bottom plate 120 into which the pouch cells 111 may be put and a side plate 100 disposed adjacent to an outermost side of the cell assembly 110.

    [0020] Each pouch cell 111 has a thin plate-like body, in which a positive electrode, a separator and a negative electrode are alternately stacked and an electrode tab is drawn out to at least one side. The positive electrode and the negative electrode are prepared by applying slurry containing an electrode active material, a binder resin, a conductive agent and other additives to at least one side of a current collector. In case of the positive electrode, the electrode active material may employ a general positive electrode active material such as a lithium-containing transition metal oxide, and in the case of the negative electrode, the electrode active material may employ a general negative electrode active material such as a lithium metal, a carbon material, a metal compound, or mixtures thereof, which is capable of intercalating or de-intercalating lithium ions. As the separator, a general porous polymer film used in a lithium secondary battery may be employed.

    [0021] The electrolyte accommodated in the pouch case together with the electrode assembly may employ a general electrolyte for a lithium secondary battery. The pouch case is made of sheet materials and has an accommodation portion for accommodating the electrode assembly. Preferably, the pouch case is formed by combining a first case and a second case, which are formed by processing a sheet material into a predetermined shape. The sheet material of the pouch case may have a multi-layered structure in which an outer resin layer made provided at an outermost side and made of an insulating material such as polyethylene terephthalate (PET) and nylon, a metal layer made of aluminum capable of maintaining mechanical strength and preventing moisture and oxygen from penetrating, and an inner resin layer made of a polyolefin-based material having thermal adhesiveness to serve as a sealing material are laminated.

    [0022] The sheet material of the pouch case may include an adhesive resin layer between the inner resin layer and the metal layer and between the outer resin layer and the metal layer, if required. The adhesive resin layer is intended for smooth adhesion between different kinds of materials and is formed as a single layer or multi layers. The adhesive resin layer may be generally made of a polyolefin-based resin, or a polyurethane resin for smooth processing, or a mixture thereof.

    [0023] In the pouch cell 111, the edge portion 112 corresponds to a flange portion where sealing is performed by thermal compression for efficient bonding of the pouch case. Thus, the edge portion 112 of the pouch cell 111 has a relatively thin thickness compared to a body portion.

    [0024] The plurality of pouch cells 111 are arranged in one direction to substantially form a stacked structure.

    [0025] The frame assembly is a structure for accommodating the cell assembly 110 to support and protect the cell assembly 110, and includes a bottom plate 120 located at a lower portion of the cell assembly 110 and a side plate 100 disposed adjacent to an outermost side of the cell assembly 110. Each of the plates 100, 120 of the frame assembly is made by a thin metal plate with a small thickness, such as an aluminum plate.

    [0026] The bottom plate 120 has a base surface capable of collectively supporting bottom surfaces of the plurality of pouch cells 111. At the base surface of the bottom plate 120, slits are formed at predetermined intervals so that the edge portions 112 of the pouch cells 111 may be inserted therein in a one-to-one relationship with the pouch cells 111. Here, the arrangement direction of the pouch cells 111 and the arrangement direction of the slits coincide with each other.

    [0027] As the edge portions 112 of the pouch cells 111 are inserted into the slits of the bottom plate 120, empty spaces 125 are respectively formed between adjacent edge portions 112, and the empty spaces 125 are used as a cooling channel. That is, a cooling fluid such as an insulating oil is supplied into the empty space 125 and cooled from the edge portions of the pouch cells 111. As shown in FIG. 4, the cooling fluid moves along the channel that is continuously formed from one end of the battery module to the other end thereof.

    [0028] The side plate 100 is made of a metal plate having a relatively small width and a great length and is disposed perpendicular to the plane of the bottom plate 120 and adjacent to the outermost side of the cell assembly 110.

    [0029] A pair of end plates 101 are disposed at both ends of the frame assembly in a length direction. The pair of end plates 101 are coupled to both sides of the bottom plate 120 and the upper plate in the length direction and to the side plate 100 to support both ends of the pouch cells 111.

    [0030] At any one end of the pair of end plates 101, an end of a cooling hose 130 is disposed to be drawn outward. The cooling hose 130 is installed to communicate with the empty space 125 in a one-to-one relationship. According to a modified example of the present disclosure, the cooling hose 130 may also be arranged long so as to be longitudinally inserted into each empty space 125.

    [0031] In addition, an insert hole 131 is formed in the other one of the pair of end plates 101, as shown in FIG. 3. The cooling hose 130 may be disposed inside the insert hole 131.

    [0032] As shown in FIG. 5, different battery modules A, B may be used in a state of being connected to each other back and forth to form an assembly. At this time, at a coupling portion C as shown in FIG. 6, the cooling hose 130 located at any one module is inserted into the insert hole 131 formed at another module and connected to the cooling hose 130 of the another module. If different modules are connected back and forth by using the cooling hose 130, there is no need for a separate pack plate for connecting and integrating the modules together.

    [0033] The battery module according to an embodiment of the present disclosure is assembled so that the frame assembly is combined in the unit of the plurality of pouch cells 111.

    [0034] The frame assembly includes the bottom plate 120 having slits formed therein and the side plate 100 disposed perpendicular to the bottom plate 120, and the plurality of pouch cells 111 are completely disposed by putting the edge portions 112 of the pouch cells 111 into the slits of the bottom plate 120, respectively, and then sealing the same.

    [0035] As the edge portions 112 of the pouch cell 111 are put into the slits of the bottom plate 120, empty spaces 125 are respectively formed between adjacent edge portions, and the empty spaces 125 are used as a cooling channel.

    [0036] If a cooling fluid such as an insulation oil flows through the cooling hose 130 after the assembling is completed, cooling is performed from the edge portions of the pouch cells 111.

    INDUSTRIAL APPLICABILITY



    [0037] If the present disclosure is applied, since the space for a cooling channel may be secured by using the empty spaces naturally formed by disposing the pouch cells, it is possible to make a battery module having a simplified structure and a reduced process cost.


    Claims

    1. A battery module, comprising:

    a cell assembly (110) composed of pouch cells (111);

    a bottom plate (120) configured to support the cell assembly and having slits formed therein at predetermined intervals so that edge portions (112) of the pouch cells are put therein;

    a pair of end plates (101) disposed at both ends of the cell assembly; and

    a side plate (100) provided perpendicular to a plane of the bottom plate and disposed adjacent to an outermost side of the cell assembly,

    wherein as the edge portions of the pouch cells are put into the slits of the bottom plate, empty spaces (125) are respectively formed between adjacent edge portions, and

    wherein the empty spaces are used as a cooling channel, wherein a cooling hose (130) is disposed to communicate with the empty space,

    wherein at any one end of the pair of end plates, an end of the cooling hose is disposed to be drawn outward,

    wherein an insert hole (131) is formed in the other one of the pair of end plates, wherein the end of the cooling hose drawn outward is adapted to be inserted into the insert hole formed at another module and connected to the cooling hose of the another module.


     
    2. The battery module according to claim 1,
    wherein the cooling hose located at any one battery module is coupled to the cooling hose located at another battery module so that different modules are connected in series.
     
    3. A method for assembling a battery module, comprising:

    (a) preparing a frame assembly, which includes a bottom plate (120) configured to supporting a cell assembly (110) composed of pouch cells (111) and having slits formed therein at predetermined intervals so that edge portions of the pouch cells are put therein, and a side plate (100) provided perpendicular to a plane of the bottom plate and disposed adjacent to an outermost side of the cell assembly;

    (b) disposing the pouch cells by putting the edge portions of the pouch cells into the slits of the bottom plate;

    (c) disposing a cooling hose (130) communicating with empty spaces respectively formed between adjacent edge portions as the edge portions of the pouch cell are put into the slits; and

    (d) disposing a pair of end plates (101) adjacent to both ends of the cell assembly, wherein at any one of the pair of end plates, an end of the cooling hose is drawn outwards, wherein an insert hole (131) is formed in the other one of the pair of end plates, wherein the end of the cooling hose drawn outwards is adapted to be inserted into the insert hole formed at another module and connected to the cooling hose of the another module.


     
    4. A frame assembly of a battery module, which supports a plurality of pouch cells at an outside of the battery module, the frame assembly comprising:

    a bottom plate (120) configured to support the pouch cells and having slits formed therein at predetermined intervals so that edge portions of the pouch cells are put therein;

    a pair of end plates disposed at both ends of the cell assembly, and

    a side plate (100) provided perpendicular to a plane of the bottom plate and disposed adjacent to an outermost side of the cell assembly,

    wherein as the edge portions of the pouch cells are put into the slits of the bottom plate, empty spaces (125) serving as a cooling channel are respectively formed between adjacent edge portions, wherein at any one of the pair of end plates, an end of a cooling hose capable of communicating with the empty spaces serving as a cooling channel is drawn outwards, wherein an insert hole (131) is formed in the other one of the pair of end plates, wherein the end of the cooling hose drawn outward is adapted to be inserted into the insert hole formed at another module and connected to the cooling hose of the another module.


     


    Ansprüche

    1. Batteriemodul, umfassend:

    eine Zellenanordnung (110), welche aus Beutelzellen (111) zusammengesetzt ist;

    eine Bodenplatte (120), welche dazu eingerichtet ist, die Zellenanordnung zu tragen, und Schlitze aufweist, welche darin in vorbestimmten Intervallen gebildet sind, so dass Randabschnitte (112) der Beutelzellen darin eingesetzt sind;

    ein Paar von Endplatten (101), welche an beiden Enden der Zellenanordnung angeordnet sind; und

    eine Seitenplatte (100), welche orthogonal zu einer Ebene der Bodenplatte bereitgestellt ist und einer äußersten Seite der Zellenanordnung benachbart angeordnet ist,

    wobei, wenn die Randabschnitte der Beutelzellen in die Schlitze der Bodenplatte eingesetzt sind, leere Räume (125) jeweils zwischen benachbarten Randabschnitten gebildet sind, und

    wobei die leeren Räume als ein Kühlkanal verwendet werden, wobei ein Kühlschlauch (130) derart angeordnet ist, dass er mit dem leeren Raum kommuniziert;

    wobei an einem beliebigen Ende des Paares von Endplatten, ein Ende des Kühlschlauches derart angeordnet ist, dass es nach außen gezogen ist,

    wobei in der anderen des Paares von Endplatten ein Einsatzloch (131) gebildet ist, wobei das Ende des nach außen gezogenen Kühlschlauchs dazu eingerichtet ist, in das Einsatzloch eingesetzt zu werden, welches an einem anderen Modul gebildet ist und mit dem Kühlschlauch des anderen Moduls verbunden ist.


     
    2. Batteriemodul nach Anspruch 1,
    wobei der Kühlschlauch, welcher an einem beliebigen Batteriemodul angeordnet ist, mit dem Kühlschlauch gekoppelt ist, welcher an einem anderen Batteriemodul angeordnet ist, so dass verschiedene Module in Reihe verbunden sind.
     
    3. Verfahren zum Anordnen eines Batteriemoduls, umfassend:

    (a) Vorbereiten einer Rahmenanordnung, welche eine Bodenplatte (120), welche dazu eingerichtet ist, eine Zellenanordnung (110) zu tragen, welche aus Beutelzellen (111) zusammengesetzt ist, und Schlitze aufweist, welche darin in vorbestimmten Intervallen gebildet sind, so dass Randabschnitte der Beutelzellen darin eingesetzt sind, und eine Seitenplatte (100) umfasst, welche orthogonal zu einer Ebene der Bodenplatte bereitgestellt ist und einer äußersten Seite der Zellenanordnung benachbart angeordnet ist;

    (b) Anordnen der Beutelzellen durch Einsetzen der Randabschnitte der Beutelzellen in die Schlitze der Bodenplatte;

    (c) Anordnen eines Kühlschlauchs (130), welcher mit leeren Räumen kommuniziert, welche jeweils zwischen benachbarten Randabschnitten gebildet sind, wenn die Randabschnitte der Beutelzelle in die Schlitze eingesetzt sind; und

    (d) Anordnen eines Paares von Endplatten (101) beiden Enden der Zellenanordnung benachbart, wobei an einem beliebigen des Paares von Endplatten ein Ende des Kühlschlauchs nach außen gezogen wird, wobei ein Einsatzloch (131) in der anderen des Paares von Endplatten gebildet wird, wobei das Ende des nach außen gezogenen Kühlschlauchs dazu eingerichtet ist, in das Einsatzloch eingesetzt zu werden, welches an einem anderen Modul gebildet ist und mit dem Kühlschlauch des anderen Moduls verbunden wird.


     
    4. Rahmenanordnung eines Batteriemoduls, welche eine Mehrzahl von Beutelzellen an einer Außenseite des Batteriemoduls trägt, wobei die Rahmenanordnung umfasst:

    eine Bodenplatte (120), welche dazu eingerichtet ist, die Beutelzellen zu tragen, und Schlitze aufweist, welche darin in vorbestimmten Intervallen gebildet sind, so dass Randabschnitte der Beutelzellen darin eingesetzt sind;

    ein Paar von Endplatten, welche an beiden Enden der Zellenanordnung angeordnet sind, und

    eine Seitenplatte (100), welche orthogonal zu einer Ebene der Bodenplatte bereitgestellt ist und einer äußersten Seite der Zellenanordnung benachbart angeordnet ist,

    wobei, wenn die Randabschnitte der Beutelzellen in die Schlitze der Bodenplatte eingesetzt sind, leere Räume (125), welche als ein Kühlkanal dienen, jeweils zwischen benachbarten Randabschnitten gebildet sind, wobei an einer beliebigen des Paares von Endplatten, ein Ende eines Kühlschlauches nach außen gezogen ist, welcher dazu in der Lage ist, mit den leeren Räumen zu kommunizieren, welche als ein Kühlkanal dienen, wobei in der anderen des Paares von Endplatten ein Einsatzloch (131) gebildet ist, wobei das Ende des nach außen gezogenen Kühlschlauchs dazu eingerichtet ist, in das Einsatzloch eingesetzt werden, welches an einem anderen Modul gebildet ist und mit dem Kühlschlauch des anderen Moduls verbunden ist.


     


    Revendications

    1. Module de batterie, comprenant :

    un ensemble de cellules (110) composé de cellules de poche (111) ;

    une plaque de fond (120) configurée pour supporter l'ensemble de cellules et dans laquelle sont formées des fentes à des intervalles prédéterminés de sorte que des parties de bord (112) des cellules de poche y soient placées ;

    une paire de plaques d'extrémité (101) disposées au niveau des deux extrémités de l'ensemble de cellules ; et

    une plaque latérale (100) prévue perpendiculairement à un plan de la plaque de fond et disposée adjacente à un côté le plus à l'extérieur de l'ensemble de cellules,

    dans lequel, à mesure que les parties de bord des cellules de poche sont placées dans les fentes de la plaque de fond, des espaces vides (125) sont respectivement formés entre des parties de bord adjacentes, et

    dans lequel les espaces vides sont utilisés comme canal de refroidissement, dans lequel un tuyau de refroidissement (130) est disposé pour communiquer avec l'espace vide,

    dans lequel, au niveau d'une extrémité quelconque de la paire de plaques d'extrémité, une extrémité du tuyau de refroidissement est disposée de manière à être tirée vers l'extérieur,

    dans lequel un trou d'insertion (131) est formé dans l'autre de la paire de plaques d'extrémité, dans lequel l'extrémité du tuyau de refroidissement tirée vers l'extérieur est adaptée pour être insérée dans le trou d'insertion formé au niveau d'un autre module et connectée au tuyau de refroidissement de l'autre module.


     
    2. Module de batterie selon la revendication 1,
    dans lequel le tuyau de refroidissement situé au niveau d'un quelconque module de batterie est couplé au tuyau de refroidissement situé au niveau d'un autre module de batterie de sorte que différents modules soient connectés en série.
     
    3. Procédé d'assemblage d'un module de batterie, comprenant :

    (a) la préparation d'un ensemble de cadre, qui comporte une plaque de fond (120) configurée pour supporter un ensemble de cellules (110) composé de cellules de poche (111) et dans laquelle sont formées des fentes à des intervalles prédéterminés de sorte que des parties de bord des cellules de poche y soient placées, et une plaque latérale (100) prévue perpendiculairement à un plan de la plaque de fond et disposée adjacente à un côté le plus à l'extérieur de l'ensemble de cellules ;

    (b) la disposition des cellules de poche en plaçant les parties de bord des cellules de poche dans les fentes de la plaque de fond ;

    (c) la disposition d'un tuyau de refroidissement (130) communiquant avec des espaces vides respectivement formés entre des parties de bord adjacentes à mesure que les parties de bord de la cellule de poche sont placées dans les fentes ; et

    (d) la disposition d'une paire de plaques d'extrémité (101) adjacentes aux deux extrémités de l'ensemble de cellules, dans lequel, au niveau de l'une quelconque de la paire de plaques d'extrémité, une extrémité du tuyau de refroidissement est tirée vers l'extérieur, dans lequel un trou d'insertion (131) est formé dans l'autre de la paire de plaques d'extrémité, dans lequel l'extrémité du tuyau de refroidissement tirée vers l'extérieur est adaptée pour être insérée dans le trou d'insertion formé au niveau d'un autre module et connectée au tuyau de refroidissement de l'autre module.


     
    4. Ensemble de cadre d'un module de batterie, qui supporte une pluralité de cellules de poche au niveau d'un extérieur du module de batterie, l'ensemble de cadre comprenant :

    une plaque de fond (120) configurée pour supporter les cellules de poche et dans laquelle sont formées des fentes à des intervalles prédéterminés de sorte que des parties de bord des cellules de poche y soient placées ;

    une paire de plaques d'extrémité disposées au niveau des deux extrémités de l'ensemble de cellules, et

    une plaque latérale (100) prévue perpendiculairement à un plan de la plaque de fond et disposée adjacente à un côté le plus à l'extérieur de l'ensemble de cellules,

    dans lequel, à mesure que les parties de bord des cellules de poche sont placées dans les fentes de la plaque de fond, des espaces vides (125) servant de canal de refroidissement sont respectivement formés entre des parties de bord adjacentes, dans lequel, au niveau d'une quelconque de la paire de plaques d'extrémité, une extrémité d'un tuyau de refroidissement capable de communiquer avec les espaces vides servant de canal de refroidissement est tirée vers l'extérieur, dans lequel un trou d'insertion (131) est formé dans l'autre de la paire de plaques d'extrémité, dans lequel l'extrémité du tuyau de refroidissement tirée vers l'extérieur est adaptée pour être insérée dans le trou d'insertion formé au niveau d'un autre module et connectée au tuyau de refroidissement de l'autre module.


     




    Drawing




















    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description