What are the breakdown methods and working principles of the BMS failure of lithium iron phosphate battery packs

Lithium iron phosphate battery pack BMS breakdown method ●Failure recurrence method Lithium iron phosphate battery pack BMS vehicles have different faults under different conditions. If conditions permit, try to reproduce the faults under the same conditions as much as possible. Confirm the problem. ● Elimination method When similar interference phenomenon occurs in the system, each component in the system should be removed one by one to determine which part has an impact on the system. ●Replacement method When a certain module has abnormalities in temperature, voltage, control, etc., replace the position of the module with the same number of strings to diagnose the module problem or the wiring harness problem. Lithium iron phosphate battery is to supply driving power for the whole vehicle. It is mainly wrapped in a metal shell to form the main body of the battery pack protection. The battery core realizes the integration of the battery cell through the modular structure design, and includes the heat dissipation hardware of the battery core. The quality of the heat dissipation system design is the prerequisite for good management of the BMS. The working principle of the lithium iron phosphate battery: When the external power supply charges the battery, the electron e on the positive electrode runs from the external circuit to the negative electrode, and the lithium ion worker i+ jumps from the positive electrode into the electrolyte, and climbs over the diaphragm. In the small hole, swimming to the negative pole, combined with the electrons that ran over. When the battery is discharged, the mechanism and charging are just the opposite. Taking LiFePO4 as an example, the chemical reaction equation is: the advantages and disadvantages of lithium iron phosphate batteries Charging: LiFePO4xLi﹢xe-→xFePO4+(1-x)LiFePO4 Discharging: FePO4+ xLi﹢+xe-→xLiFePO4+(lx)LiFePO4 Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous article: Is the lithium manganese acid battery good?