Investigation of Impact Test of Power Battery under Different Environment Temperatures

Abstract:

The impact tests are generally performed at room temperature in actual standards, but in fact, the power battery work in variety of different environment temperatures. Therefore, the impact tests of the power battery were researched at different environment temperatures (-30°C, 20°C, 40°C and 65°C). The results showed that the impact can induce the internal short circuit, at the same time, if battery system is kept running at high environment temperature, the exothermic effect will induce the heat accumulation inside the battery, leading to thermal runaway and even the battery burning and explosion. The other result is that the higher the environment temperature is, the worse the battery thermal stability is. Temperature rise rate and maximum temperature was a linear relationship of the samples that did not burn during impact tests. And the temperature rise rate and maximum temperature was the cubic polynomial relationship of the samples that burn during impact tests. That is to say, the battery is prone to induce thermal runaway when the temperature rise rate is high.

• Periodical: Applied Mechanics and Materials (Volumes 229-231)
• Pages: 1064-1067
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.229-231.1064
• Online since: November 2012
• Authors: Hong Wei Wang, Jun Liu, Hai Qing Xiao, Chao Wang
• Keywords: Different Environment Temperatures, Impact Test, Power Battery

References

[1] Lin Cheng-tao, Li Teng, Tian Guan-yun. The life test of Li-ion power battery for electric vehicle. Battery Bimonthly, 40(2010), P23.

[2] Hu Xin-guo. Power battery technology and application. Chemical Industry Press (2009).

[3] QCT 743-2006 Lithium-ion Batteries for electric vehicles. National Development and Reform Commission(2006).

[4] Wei Hong-bing, Wang Cai-juan, Zhao Yong. Investigation of impact test of Li-ion cells. Chinese battery industry, 16(2011), P209.

[5] Song Yang, Wang Cai-juan, Wei Hong-bing. Investigation of the impact test of lithium primary battery. Chinese battery industry, 14(2009), P244.