1. 產品簡介/Product introduction

DA22KM20A 是一款雙向 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；具有 12V/5A 電池管理系統喚醒信號輔助 電源（可選）。具有與充電樁連接的控制導引功能（可選）（兼容 GB/T18487.1_2015、 IEC61851.1_2017 與 SAE J1772_2017）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。

DA22KM16 is an Bi-directional 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, program me function and fault inquiry function. it also 

has built-in 12V/5A independent auxiliary power supply for power supply of car battery 

management system(compatibility GB/T18487.1_2015、 SAE J1772_2017 and SAE J1772_2017).

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.

·   雙向轉換;

· Bidirectional conversion 

·  采用PWM隔離變換器電路

· Adopting PWM isolated converter circuit

·  DSP數字化控制。

 · DSP digital control

保護功能/Protection function

輸出過流保護/Output Over Current Protection

輸出短路保護/Output Short Circuit Protection

輸出過壓保護/Output over Voltage Protection

輸出欠壓保護/Output under Voltage Protection

輸入過壓保護/Input over Voltage Protection

輸入欠壓保護/Input under Voltage Protection

CAN通信故障/CAN Communication Fault

連續 5s 未收到 BMS 或 VCU 指令No BMS or VCU command received for 5s consecutively 

OBC 立刻停止工作并上報 CAN 通信故障； 

OBC immediately stops working and reports CAN  communication failure. 

CAN 總線恢復且穩定，響應工作指令 

CAN bus is restored and stable, responding to  work orders