Development Analysis of Battery Safety Testing Standards at Home and Abroad

Development Analysis of Battery Safety Testing Standards at Home and Abroad

Abstract: At present, environmental protection and resource conservation have been highly valued by countries all over the world. The batteries with low energy consumption, low pollution and green environmental protection have received widespread attention, making batteries the mainstream of new energy sources, high efficiency and high energy. And batteries with long cycle life have become the first choice. However, in the actual application process of the battery, there are many problems, which affect the performance of the battery, resulting in a series of safety problems in the battery. This paper mainly focuses on the detection of battery safety performance at home and abroad, and proposes the development of battery safety performance testing standards.

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[Keywords] Battery Safety Performance Testing Standards
In recent years, the number of recalled batteries due to safety issues has gradually increased, and battery safety issues have received attention. The battery is widely used in various industries and has good energy storage effect. However, in the actual application process, there will be more failure problems, resulting in a battery decay speed and a high combustion probability, which cause a series of safety problems. In order to ensure the safe use of the battery, the battery needs to be tested for safety performance according to reasonable testing standards.
I. Domestic and international battery standard organization and testing standards

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At present, countries around the world have carried out research on battery standards, and established international standardization organizations and international electrotechnical committees, mainly for the main performance requirements and testing of batteries. The method was studied in depth. According to the requirements of the International Electrotechnical Commission's battery safety testing standards, combined with their respective needs, the battery transportation safety standards have been developed and good application results have been achieved. In addition, for example, countries such as the United States and Japan have developed battery safety standards through the Institute of Electrical and Electronic Engineering and the National Bureau of Standards, and have achieved wide-ranging effects and application effects, but the test conditions in various countries are quite different. The United Nations Handbook on Testing and Standards for the Transport of Dangerous Goods has a wide range of applications and major influences in the world. In the actual application process, it is mainly the process of simulating the external environment and mechanical vibration of the battery during transportation. It can ensure the battery package does not fall off, no quality loss, invariance and non-explosion, which helps prevent the occurrence of fire or explosion during battery use.
Second, the existing standards are insufficient
The unsafe behavior of batteries is mainly caused by overcharging process. When overcharge occurs, it will produce irreversible chemical reaction, which is the process of converting electrical energy into heat. The temperature on the surface of the battery continues to rise, triggering a series of chemical reactions that cause the battery to ignite or explode. Through the research and analysis of the current battery standards, most of them are test standards developed for the external environment and design and manufacturing process of lithium ion. There are many deficiencies in the safety test methods and evaluation methods of batteries, and there is a lack of fire, explosion and smoke. Significant quantifiable measurement standards and evaluation systems such as leaks. This year, domestic and international stuns on a scientific and university research method, research on the thermal effect of the battery and battery temperature, establish a thermal effect theoretical model, and describe the thermal behavior of the battery in detail. In theory, people use the theoretical simulation method to show the thermal safety performance of the battery, analyze the thermal performance, and combine the surface temperature of the battery to evaluate the internal temperature, ensuring the correctness and prejudgment of the theoretical model. In order to ensure the rationality of the establishment of the theoretical model, scholars need to fully understand the thermal effects of lithium-ion batteries, test and evaluate the safety performance, make up for the shortcomings in battery safety testing performance, and ensure the rationality of battery safety testing standards. .
Third, the development of battery safety performance testing standards
3.1 The external environment and mechanical vibration during transportation
In the process of testing the external environment and mechanical vibration of the safety performance of the battery, it is necessary to pass the temperature test, Test items such as external short circuit, shock, vibration and height simulation to complete the detection of battery safety performance, it is necessary to simulate the external environment and mechanical vibration during battery transportation to clarify the dangers that may occur during transportation of the battery, so as to The specific situation is to develop a reasonable safety performance testing standard program to reduce the occurrence of safety hazards.

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3.2 Design and Manufacturing Process
The battery sleeve is mainly composed of battery, main unit and battery combination battery charger. In order to ensure the safety of battery use, it is necessary to design and manufacture the battery core. The safety performance of raw materials and finished products is analyzed, and the safety assessment of reliability is guaranteed.

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3.3 Battery Performance and Safety
During the use of the battery, test items such as short circuit, abnormal charging, impact, shock, vibration and forced discharge test extrusion are often encountered to prevent the occurrence of test during the test. No fire, no exhaust, no burning, no leakage, etc. This type of standard is mainly for the safety of the battery, the battery safety risk caused by it, because the judgment basis is difficult to be quantified, to prevent the occurrence of fire, explosion, leakage and deformation of the battery, to ensure that potential battery danger can be detected.
Conclusion: Safety performance has become an important standard for battery testing and a key indicator for battery applications. This paper examines the safety performance of batteries at home and abroad, and conducts in-depth analysis of the deficiencies in the existing standards of batteries in order to clarify the potential risks of battery safety. With the gradual improvement of the safety requirements of the battery, it is necessary for the battery manufacturer to conduct in-depth research on the safety testing methods of the battery, and in combination with the application of the battery, formulate reasonable testing methods and evaluation standards to make up for the battery testing standards. And the deficiencies in the detection system ensure the safety of the battery detection method and screening method, and ensure the sustainable development of the battery industry.
References
[1] Liu Wei, Zhang Naiqing, Sun Kening, et al. A brief introduction to foreign battery safety testing standards [J]. Rare Metal Materials and Engineering, 2016, 39( 5) .
[2 Jin Hui, Tong Yan. Prospects for Battery Safety Testing Standards [J]. China Quality and Technical Supervision, 2014, 9.
[3] Lu Wen. Battery Safety Testing at Home and Abroad [J]. Quality and Technical Supervision Research, 2015, 1.
[4] Wu Yuping, Wang Chunrong, Jiang Changyin, et al. Exploration of battery safety performance detection [M]. Beijing: Chemical Industry Press, 2012: 336-337.

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