1. 产品简介 Product introduction

DA3K3M13-70C 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。此充电机仅支持对电池充电。

DA3K3M13-70C is an OBC switching power 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. The charger only supports charging the battery.

产品特点：

Product Features:

a. Automatic switching between constant power and constant voltage states, effectively saving charging time. 恒功率与恒压状态自动转换，有效节省充电时间。

b. Active power factor correction ≥0.99. 

有源功率因数校正≥0.99。

c. Input over/under voltage protection. 

输入过欠压保护。

d. Output over/under voltage protection.

 输出过欠压保护。

e. Output overcurrent protection. 

输出过流保护。

f. Output reverse connection protection.

 输出防反接保护。

g. Overtemperature protection. 

过温保护。

h. CAN communication intelligent fault alarm, protection function. 

CAN通讯智能故障告警、保护功能。

i. Built-in 12V auxiliary power supply for wake-up of the vehicle battery management system. 

内置12V辅助电源，用于汽车电池管理系统唤醒。

j. Control guide function for connection with charging piles. 

具有与充电桩连接的控制导引功能。

k. Remote detection, programming, fault query, and other functions.

具有远程检测、烧写、故障查询等功能。