A split-phase bi-directional on-board charger (OBC) has separate charging and discharging modes and includes a switching device block connectable to an off-board charging station during the charging mode and to an external alternating current (AC) load during the discharging mode. The OBC includes first and second DC-AC converters connected to the switching device block and a DC-DC converter connected to the first and second DC-AC converters and the DC bus. During the charging mode, the DC-AC converter outputs a DC link voltage to the DC-DC converter. When the link voltage reaches a predetermined value, the DC-DC converter outputs a DC charging voltage or current to the DC bus. During a discharge mode, the DC-AC converter receives a DC discharge voltage or current from the DC-DC converter and together selectively outputs a split-phase AC voltage through the switching device block to the AC electrical load.
分相双向车载充电器(OBC)具有分开的充电和放电模式,并且包括开关装置块,所述开关装置块在充电模式期间可连接到车外充电站并且在放电模式期间可连接到外部交流(AC)负载。OBC包括连接到开关装置块的第一和第二DC‑AC转换器以及连接到第一和第二DC‑AC转换器和DC总线的DC‑DC转换器。在充电模式期间,DC‑AC转换器将DC链路电压输出到DC‑DC转换器。当链路电压达到预定值时,DC‑DC转换器将DC充电电压或电流输出到DC总线。在放电模式期间,DC‑AC转换器从DC‑DC转换器接收DC放电电压或电流,并且一起选择性地输出分相AC电压通过开关装置块至AC电负载。
Split-phase bidirectional vehicle-mounted charger
分相双向车载充电器
2023-11-21
Patent
Electronic Resource
Chinese
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