What are the specific functions and uses of the lithium battery protection board?

The protection board for lithium battery packs for electric vehicles has many protection functions and uses, as follows: ①Overcharge protection, overdischarge protection, overcurrent and short circuit protection. ②Current protection: It is mainly reflected in the working current and overcurrent to disconnect the switch MOS to protect the battery pack or load. ③Short-circuit protection: Strictly speaking, it is a voltage-comparative type of protection, that is, it is directly turned off or driven by voltage comparison, and does not go through extra processing. ④Temperature protection: When the temperature sensor reaches the temperature threshold and the protection delay is reached, the control circuit controls to turn off the charge and discharge MOS tube to stop charging and discharging. How to connect the wire of the protection board of the lithium battery pack for electric vehicles? Some lithium batteries have a temperature protection wire as the third wire, and some are battery information check wires (for example, if a non-original battery is replaced, an alarm is required). Lithium batteries are batteries + protection boards. 3 wires will only appear on the protection board, and the battery will always only have 2 wires. There are two types of lithium batteries. Obviously, the 3.7V is non-aluminum iron phosphate, which can be replaced directly. When connecting the protection board, be sure to connect the cable first and then plug the protection board. Plugging in the protection board may cause the protection board to burn out. The replacement is very simple (pay attention to the positive and negative poles): 1: Assemble and disassemble the original lithium battery, and then separate the protective plate from the battery with an electric soldering iron. 2: Similarly, remove the protective plate of your new battery and connect the battery to the old protective plate. 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 article: What are the applications of lithium battery energy storage in the UPS industry?