Thermal runaway test analysis system for lithium ion battery

Abstract

The invention discloses a thermal runaway test analysis system for a lithium ion battery. The thermal runaway test analysis system comprises an experimental device, a testing device and a data collection and treatment system, wherein the experimental device comprises a heat-conducting pipe and a thermal insulation system; a resistance wire is wound on the outer wall of the heat-conducting pipe; the heat-conducting pipe is embedded into the thermal insulation system; a lithium ion battery mounting hole is formed in an inner cavity of the heat-conducting pipe and is used for mounting a to-be-tested lithium ion battery; a temperature sensor mounting hole is formed in the top end of the heat-conducting pipe and is used for mounting a temperature sensor; and the thermal insulation system is composed of a container and a heat-resisting insulating layer in the container. The thermal runaway test analysis system for the lithium ion battery, which is disclosed by the invention, is reasonable in structure, convenient to operate and diverse in function; thermal runaway of the lithium ion battery can be tested by the factors such as environment temperature, high-temperature environment, charge-discharge multiplying power and cooling condition by using the system; the collection accuracy of experimental data is relatively high; a data collection and analysis system is convenient to use; and the test accuracy can be ensured.

Description

technical field [0001] The invention relates to a thermal runaway test and analysis system of a lithium ion battery. Background technique [0002] Due to its high working voltage, high power density and energy density, long charge and discharge life, no memory effect, no pollution, etc., lithium-ion batteries are widely used in various electronic components, such as notebook computers, cameras, mobile phones, etc. . However, the safety of lithium-ion batteries has always been a major problem restricting its further development. In the final analysis, the safety issue of the battery reflects the temperature issue. The final result of any safety problem is that the temperature rises until it is out of control, and a safety accident occurs. Therefore, obtaining the thermal runaway temperature of lithium-ion batteries and predicting the thermal runaway environment of lithium-ion batteries is of great significance for preventing thermal runaway of lithium-ion batteries. [00...

AI Technical Summary

Problems solved by technology

However, the safety issue of lithium-ion batteries has always been a major problem restricting its further development.

[0004] However, the above experimental device cannot be applied to simultaneously study the influence of high temperature environment, charge and discharge rate, heat dissipation conditions and other factors on the thermal runaway of lithium-ion batteries

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