What are the technical parameters of the lithium battery protection board?

Technical parameters of lithium battery protection board Equalization current: 80mA (when VCELLu003d4.20V) Equalization starting point: 4.18±0.03V Overcharge threshold: 4.25±0.05V (4.30±0.05V optional) Overdischarge threshold: 2.90±0.08V (2.40±0.05V optional) Over-discharge delay: 5mS Over-discharge release: disconnect the load, and the voltage of each single battery is higher than the over-discharge threshold; over-current release: disconnect the load and release Over-temperature protection: with interface, Need to install a recoverable temperature protection switch; working current: 15A (according to customer choice) static power consumption: '0.5mA short-circuit protection function: can protect, disconnect the load can be self-recovery. Important functions: overcharge protection function, over discharge protection function, short circuit protection function, over current protection function, over temperature protection function, balance protection function. Interface meaning: The charging port and the discharge port of the board are independent of each other, and the two share the positive pole, B- is the negative pole of the battery, C- is the negative pole of the charging port; p- is the negative pole of the discharge port; B-, p-, C -The pads are all through-hole type, and the diameter of the pad hole is 3mm; each charging detection interface of the battery is output in the form of a DC needle seat. Parameter description: The configuration of the maximum working current and the overcurrent protection current value, unit: A (5/8, 8/15, 10/20, 12/25, 15/30, 20/40, 25/35, 30/50 , 35/60, 50/80, 80/100), the special overcurrent value can be customized according to customer requirements. Detailed analysis of the principle of lithium battery protection board is well known. Lithium battery is a new energy battery that is used in various fields. However, many people do not know the protection board of lithium battery. The protection board plays a vital role in battery use. Purpose, let us know the structure of the protection board and its protection principle. The protection board has two core components: a protection IC, which obtains reliable protection parameters by an accurate comparator. The other is that the MOSFET string acts as a high-speed switch in an important discharge circuit to perform protection actions. The IC controls the MOS tube by monitoring the battery voltage difference. There are resistors, capacitors, and auxiliary FUSE, pTC, NTC, ID, storage, etc. on the common protection board. B+ and B- on the protection board are respectively connected to the positive and negative poles of the battery. p+ and p- are the positive and negative poles of the output of the protection board, respectively. The figure is a schematic diagram of a protection board: the protection board will protect the battery from overcharge, over-discharge, short-circuit protection, over-current protection and temperature protection. Lithium storage batteries require constant current and constant voltage during charging. In the early stage of charging, they are charged with constant current. As the charging process, the voltage rises to a certain value and then switches to constant voltage charging until the current becomes smaller and smaller. When the battery is being charged, if the charging circuit loses control, constant current charging will continue after the voltage exceeds a certain value, and the battery voltage will continue to rise, which will cause damage to the battery or safety problems. When there is a protection board in the battery, the overcharge protection function of the protection board will be activated, and the MOS tube will be cut off, and charging of the battery pack is prohibited to protect the safety of the battery. In the same way for other protections, the protection board will always monitor the occurrence of various conditions of the battery and take protective measures. 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: What are the correct methods of using mobile phone batteries?