What are the uses and precautions of the lithium battery pack balance maintenance instrument?

What are the uses of the lithium battery pack balance maintenance instrument? 1. Overcharged maintenance purpose: Overcharged maintenance purpose means that when a certain working voltage is reached, it is strictly forbidden to recharge by the charger. About to manipulate the overcharged MOS tube into a closed state, and terminate the charging. 2. Power loss maintenance purpose: Overcharge and discharge maintenance purpose is to stop charging and discharging the load when the working voltage of the battery drops. Put the operating MOS tube in a closed state, and prohibit its charging and discharging. 3. The lithium battery pack is composed of multiple identical batteries in series and parallel. The most important thing in the process is that the batteries are the same, but it is impossible for each battery to be completely consistent, such as internal resistance deviation, capacity deviation, and voltage deviation. There will be deviations in the charging and discharging curves, so there will be deviations during charging or discharging. This deviation may cause the battery protection board to protect in advance, so that the energy of each battery cell cannot be effectively used. So it is necessary to add a balance board in the battery pack. 4. The maintenance purpose of lithium batteries is generally carried out by the cooperation of maintenance circuit boards and current components such as PTC. The lithium battery protection board is composed of electronic circuits, which can accurately monitor the lithium batteries at all times under the natural environment of -40℃ to 85℃. The working voltage and the current of the charge and discharge control loop immediately manipulate the conduction of the current control loop; PTC guards against extreme damage to the battery in a high-temperature natural environment. Precautions for the Lithium Battery Pack Balance Maintenance Instrument ① If you want to balance during the discharge and want a shorter balance time, you need to connect a power transistor with a small on-resistance. This type of transistor is very common. ② Balance the lithium battery pack during the discharge process will consume the unused power, and the power consumption will not affect the working time of the system when the battery is balanced during the adjustment process, but if the system is in working condition while discharging, At this time, there will be a lot of problems in battery balancing. ③For balancing during charging, an external power transistor with low on-resistance is needed to achieve battery balancing. This will have the same limitations of current balancing during discharge. However, balancing during charging is usually to correct short circuits in the future, so the required balancing current is smaller. 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 is a lithium iron phosphate battery? What are the advantages