Test method for battery thermal runaway characteristics

A test method and technology of thermal runaway, applied in the direction of measuring electricity, calorimeter, measuring device, etc., can solve the problem of inability to accurately find the starting point of sample exotherm

A test method and technology of thermal runaway, applied in the direction of measuring electricity, calorimeter, measuring device, etc., can solve the problem of inability to accurately find the starting point of sample exotherm

CN103837834BActive Publication Date: 2016-05-18TSINGHUA UNIV +1
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  • Test method for battery thermal runaway characteristics
  • Test method for battery thermal runaway characteristics
  • Test method for battery thermal runaway characteristics

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Embodiment Construction

[0031] The method for testing the thermal runaway characteristics of the battery provided by the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0032] see figure 1 , a calorimeter 100 includes a calorimetric cavity 110, a top cover 120, a first temperature sensor 130 and a second temperature sensor 140, the first temperature sensor 130 is used to monitor the temperature of the surface of the battery sample to be tested, The second temperature sensor 140 is used to monitor the temperature of the calorimetry cavity 110 . In the embodiment of the present invention, a large-scale accelerated calorimeter EV-ARC produced by British THT Company is used to conduct a thermal runaway test.

[0033] The calorimeter further includes a fixing bracket 150 for fixing the battery sample to be tested, and the fixing bracket 150 can be hoisted on the top cover 120 . The fixing bracket 150 includes a plurality o...

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Abstract

The invention provides a testing method of the thermal runaway characteristic of a battery. The testing method of the thermal runaway characteristic of the battery comprises the steps of selecting a simulant, placing the simulant inside a calorimeter, calibrating the calorimeter, obtaining calibrating data, taking out the simulant after calibrating is carried out, placing a battery sample to be tested into the calorimeter, and testing the thermal runaway characteristic of the battery sample to be tested by the utilization of the calibrating data.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a test method for the thermal runaway characteristics of batteries. Background technique [0002] Under the dual pressure of energy crisis and environmental pollution, electrification of vehicle power system has gradually become the mainstream of future vehicle technology development. One of the main characteristics of the electrification of the vehicle power system is to use the power battery as the main energy supply source of the vehicle. However, in recent years, fire and explosion accidents have occurred frequently due to thermal runaway of power batteries. The safety problem of power batteries not only seriously threatens the safety of people's lives and property, but also hinders the large-scale industrialization of electric vehicles. The research on the thermal runaway behavior of power batteries, especially the research on the thermal runaway behavior of l...

Claims

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Application Information

Patent Timeline
18 May 2016
Publication
CN103837834B
IPC
G01R31/36; G01K19/00
Inventors
冯旭宁; 张明轩