Battery pack overcharge 85 DEG C environment test tool

Abstract

The invention discloses a battery pack overcharge 85 DEG C environment test tool which comprises a box body, a heat preservation base plate is arranged in the box body, the box body is connected with an air heater through a pipeline, a lamp strip and a water cooling loop are arranged at the upper end of the box body, an observation opening is formed in the box body, transparent heat insulation glass is arranged on the observation opening, and a vertical high-speed camera and an oblique shooting high-speed camera are arranged above the observation opening. The test tool has the advantages that high-temperature airflow is conducted out through the air heater, a high-temperature environment is created through the high-temperature airflow, the temperature gradient in the box body is small, and the test result is more reliable; the water cooling loop provides cooling, reliable temperature control in the box body is achieved through cooperation of the water cooling loop and the air heater, rapid cooling can be achieved, and the test safety is improved; the vertical high-speed camera and the oblique shooting high-speed camera can capture changes of a battery pack in the testing process, monitoring and early warning of fire and explosion can be achieved, and the safety is further improved in cooperation with the water cooling loop in the box body.

Description

technical field [0001] The present application relates to the technical field of battery packs, in particular to a battery pack overcharging 85°C environmental test tool. Background technique [0002] Electric vehicles often encounter overcharging, that is, they continue to charge after being fully charged, and more and more attention has been paid to the safety of overcharging. Overcharge detection test is an essential link in the research and development and production of lithium batteries. During the test, the battery needs to be connected to the preset voltage for a certain period of time to observe whether there is overheating, fire and other phenomena. The overcharge test device in the prior art is usually completed by a temperature box, and a heating plate is arranged in the temperature box, and the temperature is controlled by the heating plate. [0003] For example, in the Chinese patent literature, the patent No. CN2020111704545 patent discloses a battery tempera...

AI Technical Summary

Problems solved by technology

Its shortcomings are: 1. The heating of the heating plate will obviously cause the temperature near the heating plate to be higher, which will not affect the temperature of the battery uniformly and affect the test results; 2. There is no cooling device in the box, and the cooling in the box cannot be realized. Temperature control, but the temperature in the later stage of the battery test is too high and cannot be cooled quickly, there is a safety hazard of battery explosion

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