EP 4169105 A1 20230426 - LITHIUM-ION CELL WITH A HIGH SPECIFIC ENERGY DENSITY
Title (en)
LITHIUM-ION CELL WITH A HIGH SPECIFIC ENERGY DENSITY
Title (de)
LITHIUM-IONEN-ZELLE MIT HOHER SPEZIFISCHER ENERGIEDICHTE
Title (fr)
PILE LITHIUM-ION À HAUTE DENSITÉ D'ÉNERGIE SPÉCIFIQUE
Publication
Application
Priority
- EP 20181273 A 20200619
- EP 2021066609 W 20210618
Abstract (en)
[origin: WO2021255238A1] A lithium ion cell (100) is known comprising a strip-type electrode-separator composite (104) with the sequence: anode (120 / separator (118) / cathode (130), wherein the anode (120) and the cathode (130) each comprise a current collector (110; 115) with a first and a second longitudinal edge (110e, 115e) and the current collectors each have a main region (122, 126) provided with a layer made of the respective electrode material (123, 125), and a free edge strip (121, 117) extending along the first longitudinal edge (110e, 115e) and not provided with the electrode material. The composite (104) is provided in the form of a winding with two terminal end sides and is surrounded by a housing. The anode (120) and the cathode (130) are arranged offset within the composite (104), such that the first longitudinal edge (110) of the anode current collector passes out of one of the terminal end sides and the first longitudinal edge (115e) of the cathode current collector passes out of the other one of the terminal end sides. The cell (100) has a metal contact element (101a, 102, 155), with which one of the first longitudinal edges (110e, 115e) is in direct contact and is connected via welding. According to the invention, the separator (118) comprises at least one inorganic material which improves its resistance to thermal stress.
IPC 8 full level
H01M 10/052 (2010.01); H01M 10/0583 (2010.01); H01M 10/0587 (2010.01); H01M 50/107 (2021.01); H01M 50/409 (2021.01); H01M 50/559 (2021.01)
CPC (source: EP KR US)
H01M 10/052 (2013.01 - EP); H01M 10/0525 (2013.01 - KR US); H01M 10/0587 (2013.01 - EP KR); H01M 50/107 (2021.01 - EP KR US); H01M 50/409 (2021.01 - EP KR); H01M 50/434 (2021.01 - US); H01M 50/449 (2021.01 - US); H01M 50/489 (2021.01 - US); H01M 50/533 (2021.01 - US); H01M 50/538 (2021.01 - US); H01M 50/559 (2021.01 - EP KR); Y02E 60/10 (2013.01 - EP); Y02P 70/50 (2015.11 - EP)
Citation (search report)
See references of WO 2021255238A1
Designated contracting state (EPC)
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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021255238 A1 20211223; CN 115702517 A 20230214; EP 4169105 A1 20230426; JP 2023530349 A 20230714; KR 20230027162 A 20230227; US 2023223658 A1 20230713
DOCDB simple family (application)
EP 2021066609 W 20210618; CN 202180043733 A 20210618; EP 21733131 A 20210618; JP 2022577469 A 20210618; KR 20237001317 A 20210618; US 202118002057 A 20210618