Analysis of the connection method of electric vehicle lithium battery pack and power lithium ion battery protection board

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 battery + protection board. 3 wires will only go out of the current protection board, and the battery will always only have 2 wires. There are two types of lithium batteries. The 3.7V is clearly 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. Connection of power lithium-ion battery protection board: 1. Output negative p-, charging negative c-, battery negative b, please connect in order, please do not connect the reverse line, so as not to burn the circuit components. 2. Charging line, discharging line, battery negative. Use thick wires as much as possible, otherwise large currents will not pass, and over-current protection will be achieved and the circuit will not work. 3. The positive output of the battery does not need to pass through the protection circuit and is directly connected to the output. In most cases, the lithium battery pack protection board should have the function of controlling the working conditions of the lithium battery. The lithium battery must be used together with the protection board to ensure the safety and reliability of the entire system. 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: Analysis of the correct charging method and charging stage of lithium batteries