基于单片机的锂离子电池多用途电路设计

为解决小功率便携式照明系统功能单一性及智能化等问题,将单片机控制技术应用到驱动电路中。对锂离子电池充电电路、LED驱动电路、移动电源驱动电路、单片机控制电路4种电路结构的应用方式进行了分析,提出了基于单片机控制的锂离子电池多功能驱动电路的设计方法。在整体性能上对驱动电路具有照明、应急灯、SOS信号功能,同时针对为手机等数码设备充电或待机供电功能进行了评价,并进行了8.4 W便携式LED驱动器样品测试实验。试验结果表明,该驱动电路充电电路稳定、功能多样化、线性调整率小且系统工作稳定。

Multifunction drive circuit for lithium-ion batteries based on SCM

In order to solve the problems of functional unity and intelligent in low-power portable lighting system, the SCM control technology was investigated. The application methods of the four circuit structure were analyzed, including the lithium-ion battery charging circuit, LED driver circuit, mobile power driver circuit, and MCU control circuit. A method was presented to base on microprocessor controlled lithium- ion battery muhifunction drive circuit design methods. The whole performance was evaluated on the drive circuit with lighting, emergency lights, SOS signal functions, both for mobile phones and other digital devices to charge or standby power supply function, the sample of 8.4 W portable LED drivers was tested. The experimental results show that the drive circuit has many advantages, such as charging circuit stability, functional diversification, very small line regulation, and which can work stable.