SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRIC DEVICE

WIPO Patent Application WO/2023/184784

A1

The present application provides a secondary battery, a battery module, a battery pack and an electric device. The secondary battery comprises a pole piece and an electrolyte, wherein the pole piece and/or the electrolyte comprises a negative thermal expansion material, and the negative thermal expansion material comprises at least one of a metal element, an alloy, a metal oxide, a metal sulfide, a cyanide, a fluoride, a polymer compound and a metal organic framework with a negative thermal expansion coefficient between -60ºC and 100ºC. The pole piece of the secondary battery provided in the present application can still maintain a relatively high rebound performance in a low-temperature environment, such that the battery has good operation conditions at low temperatures.

JPH02121384	BATTERY BUILT-IN TYPE PRINTED WIRING BOARD
JPH02207460	FULLY SOLID STATE LITHIUM BATTERY
JP4254947	Carbon material, its manufacturing method, and a secondary battery using the carbon material as a negative electrode active material

WANG WENXUAN (CN)
WANG GUOBAO (CN)
CAO JIAO (CN)
LIU DONGXU (CN)

PCT/CN2022/105357

October 05, 2023

July 13, 2022

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CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)

H01M10/05; H01M4/62; H01M10/0567

JP2017174648A	2017-09-28
JP2015191768A	2015-11-02
CN110010897A	2019-07-12
CN105552297A	2016-05-04
CN106654165A	2017-05-10

BEIJING EAST IP LTD. (CN)

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