BATTERY MODULE

WIPO Patent Application WO/2019/127957

A1

The present invention provides a battery module, comprising: a plurality of batteries, each of the batteries being provided with a battery explosion-proof valve; an upper cover provided with a module explosion-proof valve; and a lower box assembled with the upper cover. An enclosed passage is provided between the upper cover and the plurality of batteries, and the module explosion-proof valve and battery explosion-proof valves are exposed to the enclosed passage. As the module explosion-proof valve and the battery explosion-proof valves are exposed to the enclosed passage, when any one of the plurality of batteries fails, a large amount of high-temperature and high-pressure gas generated at the moment of failure firstly bursts out of its own battery explosion-proof valve and enters the enclosed passage and accumulates gradually in the enclosed passage; and when the accumulated air pressure in the enclosed passage is greater than the opening pressure of the module explosion-proof valve, the high-temperature and high-pressure gas bursts out of the module explosion-proof valve and then is released to the outside of the battery module in a certain direction. Thereby, the damage of the high-temperature and high-pressure gas to the other normal batteries in the battery module is reduced, reducing the probability of fire and explosion.

ZHANG HUA (CN)
QIN FENG (CN)
YOU ZHIYI (CN)
XIAO XINFU (CN)
WANG JUAN (CN)
MA LIN (CN)

PCT/CN2018/081085

July 04, 2019

March 29, 2018

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CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)

H01M50/204; H01M50/209; H01M50/24; H01M50/325

CN206040913U	2017-03-22
CN204651372U	2015-09-16
US20130065100A1	2013-03-14

BEIJING WUZHOUYANGHE & PARTNERS (CN)

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