Title:
ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/100697
Kind Code:
A1
Abstract:
The present application relates to an electrode sheet, a secondary battery containing the electrode sheet, a battery module, a battery pack and an electric device. Specifically, provided in the present application is the electrode sheet which comprises a current collector, a functional layer and an active material layer. At least part of the surface of the current collector is provided with a plurality of protrusions and a plurality of recesses, the functional layer is arranged in at least some of the plurality of recesses so as to achieve an effect of blocking the current collector and the active material layer when the temperature is greater than or equal to 80 ºC, increase the resistivity of the electrode sheet, and further ensure the safety performance of the secondary battery. In addition, arranging the concave-convex current collector can solve the problem of non-direct contact of the active material layer and the current collector that is caused by the functional layer at room temperature, and achieve a relatively small resistance value.
Inventors:
TANG HUAICHAO (CN)
WU KAI (CN)
LIANG CHENGDU (CN)
LI WEI (CN)
WU KAI (CN)
LIANG CHENGDU (CN)
LI WEI (CN)
Application Number:
PCT/CN2021/130359
Publication Date:
May 19, 2022
Filing Date:
November 12, 2021
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/78
Foreign References:
| CN113611872A | 2021-11-05 | |||
| CN110168794A | 2019-08-23 | |||
| EP3367476A1 | 2018-08-29 | |||
| CN111200131A | 2020-05-26 | |||
| CN104409681A | 2015-03-11 | |||
| CN101436656A | 2009-05-20 | |||
| CN99811515A | 1999-09-21 | |||
| CN201320203851U | 2013-04-19 | |||
| CN201410661206A | 2014-11-19 | |||
| CN201510022749A | 2015-01-16 | |||
| CN201611208300A | 2016-12-23 | |||
| CN201611863080A | ||||
| CN201710241644A | 2017-04-13 | |||
| CN201811297349A | 2018-11-01 | |||
| CN201910442726A | 2019-05-25 | |||
| CN201820838120U | 2018-05-31 |
Attorney, Agent or Firm:
PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)
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