Is it necessary to use a protective plate for the lithium iron phosphate battery pack?

Due to the special nature of the lithium battery, if there is no protection board, it will affect the normal working time of the battery. The lithium battery pack protection board circuit can separately test the voltage and current of each battery in the series battery pack, and control the charging and discharging process of the lithium iron phosphate battery pack. The voltage of each battery in the lithium battery pack is at the overcharge test voltage and overdischarge Between the test voltages and when there is no short circuit in the output, the MOS tube is turned on, P+, P- output the battery pack voltage, allowing the lithium iron phosphate battery to charge and discharge, and simultaneously test the overvoltage and undervoltage of each single cell in the battery pack , Over current, short circuit, over temperature state, protect and extend the life of lithium iron phosphate battery, and protect each single cell battery when it is used for discharging and guard against battery damage due to overdischarge. The reason why the lithium iron phosphate battery needs to be protected is determined by its own characteristics. Since the material of the lithium battery itself determines that it cannot be overcharged, overdischarged, overcurrent, short-circuited, and ultra-high temperature charging and discharging, the lithium battery package will always appear with an exquisite protection board and a current fuse. The protection function of the lithium iron phosphate battery pack is usually completed by the protection circuit board and current devices such as PTC. The protection board is composed of electronic circuits, which can accurately monitor the voltage and charge of the battery cell at all times under the environment of -40℃ to +85℃. Discharge the current of the loop, and control the on and off of the current loop in time; PTC guards against severe damage to the battery in a high temperature environment. 1. Matrix characteristics 1. Open-circuit voltage detection: After measuring the applied voltage, whether the MOS tube can be turned on normally 2. On-load voltage detection: Measure the load capacity of the protection board to reflect the protection DC impedance 3. VCC voltage measurement ( Is the working voltage of the chip normal? 4. The working frequency of the chip is measured (the working crystal frequency of the chip) 5. The on-resistance measurement (MOS tube and FUSE resistance measurement) 6. The identification resistance-IDR measurement; 7. Thermistor Tun resistance--THR 8. Static power consumption current in normal state u0026 sleep static power consumption 9. Static power consumption current in off state 10. PACK battery overvoltage protection detection (POV) protection value, protection delay time, recovery value, recovery Time (If COV is measured, POV does not need to be measured, it is generally not recommended to measure only POV, because even if the POV of the general group is protected, it does not mean that every section can be protected. In case a certain section is not protected, then It is very dangerous. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous article: Analysis of the square battery model