Explain the balance principle of lithium-ion battery protection board

Commonly used equalization charging techniques for the equalization principle of lithium-ion battery protection boards include constant shunt resistance equalization charging, on-off shunt resistance equalization charging, average battery voltage equalization charging, switched capacitor equalization charging, step-down converter equalization charging, inductance equalization charging, etc. When a group of lithium-ion batteries are charged in series, each battery should be balanced and charged, otherwise the performance and life of the entire group of batteries will be affected during use. The existing single-cell lithium-ion battery protection chips do not contain equalizing charge control functions, and the multi-cell lithium-ion battery protection chip equalizing charge control functions need to be connected to the CPU; it is realized through serial communication with the protection chip (such as I2C bus). Increase the complexity and design difficulty of the protection circuit, reduce the efficiency and reliability of the system, and increase the power consumption. According to the requirements of the application, the balancing principle of the lithium-ion battery protection board can be used to protect and protect the power lithium-ion battery pack of any structure and voltage level after changing the protection chip model and the number of series, the power level of the switching devices and the power consumption components in the circuit. Even charge. Lithium-ion batteries, as a battery with relatively large electric storage, are used in various computer rooms, communication base stations, data centers and other fields. The lithium-ion battery protection board has the function of protecting the battery and preventing the battery from overcharging. The above is a brief introduction to the function of the lithium-ion battery protection board made by the author of Cuneng Electric. I hope everyone must pay attention to the quality of the lithium-ion battery protection board when using or buying lithium-ion batteries. 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 post: What are the advantages of lithium iron phosphate batteries and lithium ion batteries