The invention provides a DCDC converter, a vehicle-mounted charging device, a vehicle-mounted charging system and a vehicle, and relates to the technical field of vehicle-mounted charging. The DCDC converter comprises a first direct-current power supply end, a main transformer, a first part circuit located on the secondary side of the main transformer, a second part circuit located on the primaryside of the main transformer and a second direct-current power supply end. The first direct-current power supply end is used for being connected with a low-voltage battery of the vehicle-mounted charging system, and the second direct-current power supply end is used for being connected with a vehicle-mounted charger of the vehicle-mounted charging system. Compared with the prior art, a pre-charging circuit of the OBC and the high-voltage battery side can be omitted, so that the power density and the safety of the OBC are improved, and the cost of the OBC and the whole vehicle is reduced.
本申请提供一种DCDC变换器、车载充电装置、系统及交通工具,涉及车载充电技术领域。该DCDC变换器包括:第一直流电源端、主变压器、位于所述主变压器的副边侧的第一部分电路、位于所述主变压器的原边侧的第二部分电路及第二直流电源端;所述第一直流电源端用于连接所述车载充电系统的低压电池,所述第二直流电源端用于连接所述车载充电系统的车载充电机。相对于现有技术,可以省去OBC与高压电池侧的预充电路,这样不仅提高了OBC的功率密度与安全性,也降低了OBC与整车的成本。
DCDC converter, vehicle-mounted charging device, vehicle-mounted charging system and vehicle
DCDC变换器、车载充电装置、系统及交通工具
2020-07-31
Patent
Electronic Resource
Chinese
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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