Decomposition of test standards related to the safety of lithium batteries

At present, the safety testing standards for lithium-ion batteries at home and abroad are basically compliance testing standards, that is, the standards stipulate short circuit, overcharge, forced discharge, vibration, shock, extrusion, needle stick, heavy object impact, drop, temperature test, Low air pressure and other electrical, mechanical and environmental test items are used to simulate the application of batteries in normal use and foreseeable misuse, and to ensure the safety of the product under these conditions. This standard form has the advantages of clear criteria and good operability. It only needs to conduct laboratory tests on the finished battery to determine whether it meets the standard. The disadvantage is that it cannot fully and effectively guarantee the quality and safety of the product, because safety is A component aspect of product performance is formed and established in the product design and manufacturing process. The assessment objects of the current standard deviate from this. In addition, safety tests are destructive tests and can only be carried out by sampling tests. This method itself There is also a certain risk probability. Comparing domestic and foreign standards, it can be seen that my country's lithium-ion battery safety standards lack an overall plan. On the one hand, there is a lack of coordination between national and industry standards and various industry standards, and there is a certain degree of overlap and duplication of standard objects. On the other hand, the standards do not have a unified guiding ideology, which includes both simple safety standards and electrical performance. , Environmentally applicable performance and safety performance and other requirements of the general normative nature of the standard. In comparison, foreign standards are more unified and coordinated in terms of working ideas and mutual relationships. For example, IEC sets separate standards for product safety, and other standards such as general product specifications stipulate electrical performance and other requirements. Safety requirements directly refer to safety standards. ; IEEE formulates general product specifications including safety requirements for different purposes. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Briefly describe the market demand of the lithium battery winding machine industry