Battery module

Abstract

The invention discloses a battery module. The battery module comprises a box body module, a battery cell module and a sealing module. A mounting cavity is formed in the box body module; the box body module comprises a top sealing plate, and a plurality of first explosion-proof valves are arranged on the top sealing plate; the battery cell module is arranged in the mounting cavity; the battery cellmodule comprises a plurality of battery cells, and second explosion-proof valves, positive plates and negative plates of the battery cells are all located at the tops of the battery cells; the sealing module comprises a plurality of first heat insulation plates and a plurality of second heat insulation plates; each first heat insulation plate and each second heat insulation plate are bonded between two adjacent battery cells to divide the mounting cavity into a plurality of sub-mounting cavities which are arranged in a transverse manner; the plurality of sub-mounting cavities are in one-to-one correspondence with the plurality of first explosion-proof valves; each sub-mounting cavity is suitable for being sealed by a sealant after being communicated with the corresponding first explosion-proof valve; and at least one battery cell is suitable for being mounted in each sub-mounting cavity. According to the embodiment of the invention, the battery module is good in sealing performance, can better release pressure to protect the battery cells, and is high in safety.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery module. Background technique [0002] At present, electric vehicles are grouped with multiple small modules, each of which has 3 strings / 4 strings / 6 strings, and the largest does not exceed 50 strings. However, electric vehicles often require more than 80 strings, and the optimal ones are often It is 96 strings to 108 strings, and the maximum efficiency of the motor can often be exerted at this time. A set of electric vehicle battery system needs to be assembled into the battery box according to the series-parallel connection requirements of the whole vehicle. Many small modules and other parts are assembled into the battery box. And explosion-proof pressure relief parts are added to the battery box to ensure that the battery system can be oriented and released safely when the pressure is released. However, there is a battery discharge, and when high-temperature gas ...

AI Technical Summary

Problems solved by technology

A set of electric vehicle battery system needs to be assembled into the battery box according to the series-parallel connection requirements of the whole vehicle. Many small modules and other parts are assembled into the battery box. And explosion-proof pressure relief parts are added to the battery box to ensure that the battery system can be oriented and released safely when the pressure is released. However, there is a battery discharge, and when high-temperature gas reaches the explosion-proof valve, it will interfere with other batteries, causing other batteries to catch fire. thermal runaway

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