GB 31241-2014 and GB/T 28164-2011 are two important standards for battery testing in China's national standards. These two standards have certain differences in the scope, methods and requirements of battery testing. This article will discuss the differences between these two standards in battery testing by comparing them.

1.GB 31241-2014 battery test standard

GB 31241-2014 is China's national standard about lithium ion power battery standard of package security technical specifications. This standard mainly includes battery pack design, test, safety requirements and other aspects, which is the specification for the safety performance of electric vehicle power battery pack. In terms of battery testing, GB 31241-2014 focuses on the following aspects:

• environmental adaptability test: including testing the performance of battery pack under different environmental conditions, such as temperature, humidity, vibration, etc.
• Security Performance Test: including testing the safety performance of battery pack under abnormal conditions such as short circuit, overcharge, and overdischarge.
• Cycle Life Test: including testing the life of battery pack under different cycles to evaluate its cycle stability.

2. GB/T 28164-2011 battery test standard

GB/T 28164-2011 is the standard of test method of power battery in Chinese national standard. This standard mainly includes the basic terms, test methods and test requirements of power batteries, and is applicable to various types of power batteries. In terms of battery testing, GB/T 28164-2011 focuses on the following aspects:

• performance Test: including testing the performance of power battery such as energy density, cycle life and self-discharge rate.
• Security Performance Test: including testing the safety performance of the power battery under abnormal conditions such as short circuit, overcharge and overdischarge.
• Environmental adaptability test: including testing the performance of power battery under different environmental conditions, such as temperature, humidity, pressure, etc.

Difference between 3.GB 31241-2014 and GB/T 28164-2011

by comparing GB 31241-2014 and GB/T 28164-2011, we can find some differences in battery testing:

• different scope of application: GB 31241-2014 is mainly applicable to lithium-ion power battery pack, while GB/T 28164-2011 is applicable to various types of power batteries, including lithium-ion batteries, Ni-MH batteries, etc.
• Different test priorities
• Different test methods: The two standards also have certain differences in test methods and requirements, such as test parameters and test conditions.