Lithium battery management system function -Lithium - Ion Battery Equipment

Lithium battery switching power management system -Lithium - Ion Battery Equipment

Design of lithium-ion battery switching power management system Lithium-ion battery is an emerging industry in the 21st century, and it has rapidly developed into a trend in recent years. Lithium-ion batteries have great advantages in the battery industry and are nationally recognized green energy. It is not only applicable to the consumer electronics market, but also to the field of new energy vehicles.

Lithium-ion batteries are portable. For consumers, they want to get high-capacity power while reducing the weight of the system as much as possible, increasing the efficiency and life of the battery, and the cooling conditions of portable devices are usually poor, so lithium-ion batteries The efficiency of the management system also puts forward higher requirements. For most of the switching power supplies are characterized by high efficiency, the use of switching power supplies can effectively reduce the power loss of the large-capacity lithium-ion battery charging system, thereby significantly reducing the calorific value of the entire system. (Lithium - Ion Battery Equipment)

At present, the most widely used constant current and constant voltage charging method, by using switch mode power supply to supply battery voltage and current, using single chip microcomputer and a series of peripheral circuits to realize rechargeable battery charge and discharge control and protection functions of batteries, power management systems, comprehensive utilization With microcontrollers and switching power supplies, we can build an intelligent lithium-ion/lithium-polymer battery intelligent management system to achieve a series of battery protection functions.

Design of lithium-ion battery switching power management system: It mainly includes two parts: charger and battery pack. The design of charger: AC and DC switching power supply that can realize constant current and constant voltage output. The self-excitation current must be reduced to zero before the start of a new switching cycle, and the duty cycle of the circuit must be limited to less than 0.5, which allows sufficient excitation energy to return to the input before the end of a cycle, preventing the possibility of transformer bias or even saturation. Control circuit design: It mainly includes the auxiliary power supply part responsible for supplying power to the charger control circuit and the power control chip part of the main power supply circuit, which is completed by the charger control circuit independently.

In this management system: intelligent management system, the single-chip microcomputer, as the controller of the whole system, plays a very important role. When the battery state is abnormal, it can remind the operator to pay attention at the time and through the alarm method. At present, many companies adopt this method. A switching power management system to protect the function of the entire circuit.



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