The safety of power battery is a systematic project

1. Power batteries are relatively safe. Power batteries are electrochemical products, that is, dangerous goods. However, the level of dangerous goods is relatively low, and relevant international organizations have divided the levels of dangerous goods. The power battery grade is the 8th and 9th dangerous goods. Compared with bombs, firecrackers, gasoline, and diesel, it will not explode or catch fire under normal conditions. However, the power battery will undergo great changes in the use environment, and possible collisions and unconventional charging and discharging factors may cause an internal short circuit in the power battery system. 2. Power battery safety measures are a system engineering Power battery safety measures are a system engineering. From the production of power battery cells to the integration of battery packs, to the completion of battery system devices, to batch installation and use, to the daily maintenance of users, there are safety technical requirements and safety responsibilities. At present, the safety technology of power battery continues to improve from the safety level of electrical materials, battery packs, battery systems and connectors, and wiring harnesses. 3. Technical requirements for battery pack safety measures 1) The volume should be small and the weight should be light. Compared with the battery pack, it should be negligible. 2) The multiple functions of active detection, data analysis, research and judgment, control and management are highly integrated, which can intelligently analyze the battery thermal runaway stage and carry out automatic intervention control. 3) It must be able to interface with the BMS management system. Information such as gas, volume, smoke, open flame and other information generated in the initial stage of the fire caused by internal short circuit, excessive charging and discharging, and external short circuit in the battery box will be transmitted to the control station in time through the data bus. 4) In the absence of power, when the ambient temperature reaches the specified value, the fire extinguishing device can automatically start to complete its design function. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Classification and characteristics of conventional energy storage batteries