The principle structure of balanced charging of button battery 2025 protection board

　　In the past, because the chemical properties of lithium metal are very active and the environmental requirements for processing, storage, and use are very high, lithium batteries have not been used for a long time. With the development of modern science, lithium batteries have now become mainstream.

　　Power lithium batteries are used in groups. Each lithium battery requires protection from charging overvoltage, discharge undervoltage, overcurrent, and short circuit. During the charging process, it is necessary to achieve balanced charging of the entire group of batteries. A method using a single lithium battery is introduced. The design of a battery pack protection board with equalizing charging function that protects any number of lithium batteries connected in series with a protection chip. Simulation results and industrial production applications prove that the protection board has perfect protection functions, stable operation, high cost performance, and the balanced charging error is less than 50mV.

　　Commonly used balancing charging technologies include constant shunt resistor balancing charging, on-off shunt resistor balancing charging, average battery voltage balancing charging, switched capacitor balancing charging, buck converter balancing charging, inductor balancing charging, etc. When charging a group of lithium batteries in series, each battery should be charged evenly, otherwise the performance and life of the entire battery group will be affected during use. However, the existing single-cell lithium battery protection chips do not contain the balanced charge control function. The balanced charge control function of the multi-cell lithium battery protection chip requires an external CPU; it is realized through serial communication with the protection chip (such as I2C bus), which increases the This increases the complexity and design difficulty of the protection circuit, reduces the efficiency and reliability of the system, and increases power consumption.

　　Power lithium batteries are used in groups. Each lithium battery requires protection from charging overvoltage, discharge undervoltage, overcurrent, and short circuit. During the charging process, it is necessary to achieve balanced charging of the entire group of batteries. A method using a single lithium battery is introduced. The design of a battery pack protection board with equalizing charging function that protects any number of lithium batteries connected in series with a protection chip. Simulation results and industrial production applications prove that the protection board has perfect protection functions, stable operation, high cost performance, and the balanced charging error is less than 50mV.

　　button battery 2025 protection plate balanced charging principle structure

　　The number of single-cell lithium battery protection chips is determined based on the number of cells in the button battery 2025, and they are used in series to protect the corresponding single-cell lithium battery from the charge and discharge, overcurrent, and short-circuit conditions. While charging protection, the system uses the protection chip to control the on and off of the shunt discharge branch switching device to achieve balanced charging. This solution is different from the traditional approach of achieving balanced charging at the charger end and reduces the design of button battery 2025 chargers. Application cost.

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