Lithium battery pack protection board charging -Lithium - Ion Battery Equipment
The power group uses lithium-ion batteries, and the charged lithium-ion batteries need voltage, discharge voltage, over-current, short-circuit protection, in order to achieve the problem of the entire battery equalization charging and charging process, and a section introduces any number of lithium-ion battery protection chips The array of stages includes battery protection features designed for balanced charging of Li-ion battery protection boards. Simulation results and industrial applications show that the protection board has the advantages of perfect protection function, stable operation, high cost performance, and charging error balance less than 50mV.
Commonly used equalization charging techniques include: constant shunt resistor equalization charging, switch shunt resistor equalization charging, average battery voltage equalization charging, switched capacitor equalization charging, buck converter equalization charging, inductor equalization charging, etc. When lithium-ion batteries are charged in series, each battery should be charged evenly, otherwise the performance and life of the entire battery will be affected during use. However, the existing single-chip lithium-ion battery protection chip has no equalizing charge control function, and the equalizing charge control function of the multi-chip lithium-ion battery protection chip requires an external CPU. Through serial communication with the protection chip (such as I2C bus), the complexity and design difficulty of the protection circuit are added, the efficiency and reliability of the system are reduced, and the power consumption is added.(Lithium - Ion Battery Equipment)
The power group uses lithium-ion batteries, and the charged lithium-ion batteries need voltage, discharge voltage, over-current, short-circuit protection, in order to achieve the problem of the entire battery equalization charging and charging process, and a section introduces any number of lithium-ion battery protection chips The array of stages includes battery protection features designed for balanced charging of Li-ion battery protection boards. Simulation results and industrial applications show that the protection board has the advantages of perfect protection function, stable operation, high cost performance, and charging error balance less than 50mV.
Lithium-ion battery protection board balance charging principle structure
The number of protection chips for a single lithium-ion battery should be determined according to the lithium-ion battery pack and the number of series connections that should be used to protect the corresponding single lithium-ion battery from charge-discharge, overcurrent and short-circuit states. At the same time of charging protection, balanced charging is realized by protecting the chip and controlling the on-off of the parallel discharge branch switching device. This method is different from the traditional balanced charging at the charger end, and reduces the design and application cost of the lithium-ion battery charger.
Commonly used equalization charging techniques include: constant shunt resistor equalization charging, switch shunt resistor equalization charging, average battery voltage equalization charging, switched capacitor equalization charging, buck converter equalization charging, inductor equalization charging, etc. When lithium-ion batteries are charged in series, each battery should be charged evenly, otherwise the performance and life of the entire battery will be affected during use. However, the existing single-chip lithium-ion battery protection chip has no equalizing charge control function, and the equalizing charge control function of the multi-chip lithium-ion battery protection chip requires an external CPU. Through serial communication with the protection chip (such as I2C bus), the complexity and design difficulty of the protection circuit are added, the efficiency and reliability of the system are reduced, and the power consumption is added.(Lithium - Ion Battery Equipment)
The power group uses lithium-ion batteries, and the charged lithium-ion batteries need voltage, discharge voltage, over-current, short-circuit protection, in order to achieve the problem of the entire battery equalization charging and charging process, and a section introduces any number of lithium-ion battery protection chips The array of stages includes battery protection features designed for balanced charging of Li-ion battery protection boards. Simulation results and industrial applications show that the protection board has the advantages of perfect protection function, stable operation, high cost performance, and charging error balance less than 50mV.
Lithium-ion battery protection board balance charging principle structure
The number of protection chips for a single lithium-ion battery should be determined according to the lithium-ion battery pack and the number of series connections that should be used to protect the corresponding single lithium-ion battery from charge-discharge, overcurrent and short-circuit states. At the same time of charging protection, balanced charging is realized by protecting the chip and controlling the on-off of the parallel discharge branch switching device. This method is different from the traditional balanced charging at the charger end, and reduces the design and application cost of the lithium-ion battery charger.
