Thermal safety control battery module structure

Abstract

The invention discloses a thermal safety control battery module structure, which comprises a battery module shell and at least two single batteries located in the battery module shell, wherein a partition plate of a honeycomb structure and a fireproof plastic net are arranged between every two adjacent single batteries, the battery module shell comprises an upper cover plate, a bottom plate, two first side plates and two second side plates, and heat dissipation grooves are formed in the inner sides of the bottom plate, the upper cover plate and the first side plates. According to the invention, six degrees of freedom of the whole single battery group in space are limited, the tensioning is effective, and the structure is compact; due to the arrangement of the partition plates with the honeycomb structure, the transmission of heat between the single batteries is isolated, and an efficient heat dissipation effect is achieved; according to an indentation structure of the upper cover plate, directional explosion spraying during thermal runaway of the battery module can be realized by setting indentation opening pressure, so that rapid pressure relief is realized, and the hazard of explosion is effectively reduced.

Description

technical field [0001] The invention relates to the field of battery packs for electric vehicles, in particular to a thermal safety control battery module structure. Background technique [0002] As the power source of electric vehicles, batteries are undoubtedly one of the core components of electric vehicles. In order to meet a certain cruising range, a certain number of batteries need to be installed in groups to form a battery module. The design of the battery module should not only meet the requirements of light weight and reliable mechanical strength, but also meet the requirements of thermal safety control of the battery module. [0003] The battery will generate heat and gas during repeated charge and discharge cycles. When the heat and gas in the battery accumulate to a certain extent, if proper treatment measures are not taken, it may cause a serious explosion accident. When using square battery cells to design a battery module, the general method is to set up se...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a thermal safety management and control battery module structure, based on the requirements of thermal safety management and control of the battery module, on the premise of ensuring the structural strength of the battery module, it can realize efficient heat dissipation and heat dissipation of the battery module. The directional explosive spraying after thermal runaway realizes the lightweight design of the battery module structure, and solves the problem that traditional batteries do not have a good way of isolating heat transfer between battery cells, let alone suppressing the thermal runaway of the battery

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