1.产品简介/Product introduction

DA40KM44A是一款 OBC 开关电源变换器，采用先进的全数字谐振调频技

术，效率高。与同类产品相比，更加节能、体积小、工作可靠。充电方式采用自有专利技术，

恒压、恒流、恒功率状态自动转换充电方法，有效节省充电时间；具有有源功率因数校正功

能，对电网低污染；输入和输出电压范围宽；采用 CAN2.0B 通信协议；具有智能充电功能、

智能监测故障告警保护功能、烧写、故障查询等功能；同时内置 12V 供电池管理系统唤醒

信号电源。具有与充电桩连接的控制导引功能（可选）等。

该款电源专为新能源汽车高压电池充电而设计,与国际一流汽车电源厂商完全同步，各项

性能指标已达到或超越国际同行水平，无故障运行时间更长。该系列电源也可适用于需要恒

压、恒流、恒功率充电的各个领域。

DA40KM44Ais an OBC switching power supply converter. The charger adopts 

advanced all-digital resonant frequency modulation technology, which has high efficiency, high 

power, small size and reliable operation. The charging mode adopts constant power, constant 

voltage and constant current automatic state transition, which effectively saves charging time. 

With active power factor correction, zero pollution to the grid, wide input and output voltage 

range, using CAN2.0B communication protocol. With intelligent charging function, it has 

intelligent monitoring fault alarm protection function, programme function and fault inquiry 

function; it also has built-in 12V independent auxiliary power supply for power supply of car 

battery management system. 

This power supply is specially designed for charging high-voltage batteries of new energy vehicles. 

which is completely synchronized with the world-class automobile power supply manufacturers. 

The performance indicators have reached or exceeded the international peer level, and the 

fault-free running time is longer.