1.產品簡介/Product introduction

DA40KM44A是一款 OBC 開關電源變換器，采用先進的全數字諧振調頻技

術，效率高。與同類產品相比，更加節能、體積小、工作可靠。充電方式采用自有專利技術，

恒壓、恒流、恒功率狀態自動轉換充電方法，有效節省充電時間；具有有源功率因數校正功

能，對電網低污染；輸入和輸出電壓范圍寬；采用 CAN2.0B 通信協議；具有智能充電功能、

智能監測故障告警保護功能、燒寫、故障查詢等功能；同時內置 12V 供電池管理系統喚醒

信號電源。具有與充電樁連接的控制導引功能（可選）等。

該款電源專為新能源汽車高壓電池充電而設計,與國際一流汽車電源廠商完全同步，各項

性能指標已達到或超越國際同行水平，無故障運行時間更長。該系列電源也可適用于需要恒

壓、恒流、恒功率充電的各個領域。

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.