A battery charger for an electric vehicle supplies DC output power to an output bus to supply power to a battery. The battery charger includes an AC/DC converter that converts AC power from an AC source to a DC link voltage on a DC link bus using a switch. The DC link capacitor allows ripple in the DC link voltage to be greater than ripple in a conventional charger design. The DC/DC stage includes a DC/AC converter including one or more switches for selectively conducting current from the DC link bus to supply AC power to the transformer. A switch of the DC/AC converter is mounted to an insulating metal substrate that is in thermal contact with the transformer housing to dissipate heat from the transformer housing. The controller controls one or more switches of the DC/AC converter and changes the switching frequency in response to a ripple of the DC link voltage.
一种用于电动车辆的电池充电器,将DC输出电力供应到输出总线以向电池供应电力。电池充电器包括AC/DC转换器,其使用开关将来自AC源的AC电力转换为DC链路总线上的DC链路电压。DC链路电容器允许DC链路电压中的纹波大于常规充电器设计中的纹波。DC/DC级包括DC/AC转换器,该DC/AC转换器包括一个或更多个开关,用于选择性地传导来自DC链路总线的电流,以向变压器供应AC电力。DC/AC转换器的开关被安装到绝缘金属基板,该绝缘金属基板与变压器壳体热接触以从变压器壳体散热。控制器控制DC/AC转换器的一个或更多个开关,并且响应于DC链路电压的纹波而改变开关频率。
Charger for plug-in electric vehicle
用于插入式电动车辆的充电器
2022-08-19
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 |
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