Battery pack thermal runaway test device and test method

Abstract

The invention relates to a battery pack thermal runaway test device and a test method, the battery pack thermal runaway test device comprises a support with supporting legs provided with height adjustable devices, a battery pack is installed on the support, a cover plate is installed above the battery pack, and the lower surface of the cover plate and the upper surface of the battery pack are arranged at an interval; the battery pack and the cover plate are fixed on the support through a fixing piece; and the height adjustable devices are adjusted according to the height of the battery pack. The battery pack thermal runaway test device is ingenious in structure, the accuracy of a test result can be improved, the safety performance of the battery pack is guaranteed, then the personal safety of a driver and passengers is guaranteed, the use experience of the driver and passengers is enhanced, and application and popularization of the device in the technical field of electric automobiles are facilitated; the battery pack thermal runaway test method also has the advantages of improving the accuracy of the test result and ensuring the safety performance of the battery pack.

Description

technical field [0001] The invention relates to the technical field of new energy electric vehicles, in particular to a battery pack thermal runaway test device and test method. Background technique [0002] The battery management system (BMS) is a control system that protects the safety of the power battery. It monitors the status of the battery at all times, and takes necessary measures to alleviate the inconsistency of the battery pack, so as to provide guarantee for the safe use of new energy vehicles. [0003] The thermal runaway of the battery belongs to the state of thermal management runaway in the battery management system, that is, when the battery is charged and discharged, it will generate heat due to various internal electrochemical reactions. If there is no good heat dissipation system, the heat generated will accumulate inside the battery and gradually appear. If the power is reduced, or even dangerous situations such as explosion and combustion occur, this is...

AI Technical Summary

Problems solved by technology

However, during the test, the battery pack is generally hoisted by iron chains or directly mounted on a certain platform. When thermal runaway occurs, the battery pack will experience serious bulges, or the force on the bottom of the battery pack is different from that installed on the bottom of the vehicle. Inconsistencies in the state during the test, resulting in inaccurate evaluation of some parts during the test, making it difficult to meet the requirements of the test

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