US 12,330,520 B2
Off-board charger, charging system, and charging station
Dong Cheng, Shenzhen (CN); and Mengxiong Liao, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Guangdong (CN)
Filed on Aug. 18, 2023, as Appl. No. 18/452,491.
Claims priority of application No. 202210991036.5 (CN), filed on Aug. 18, 2022.
Prior Publication US 2024/0059165 A1, Feb. 22, 2024
Int. Cl. B60L 53/14 (2019.01); B60L 53/10 (2019.01); B60L 53/22 (2019.01); B60L 53/31 (2019.01); B60L 53/62 (2019.01); B60L 53/65 (2019.01); H02J 7/02 (2016.01)
CPC B60L 53/22 (2019.02) [B60L 53/11 (2019.02); B60L 53/14 (2019.02); B60L 53/31 (2019.02); B60L 53/62 (2019.02); B60L 53/65 (2019.02); H02J 7/02 (2013.01); B60L 2210/10 (2013.01); B60L 2210/30 (2013.01); H02J 2207/20 (2020.01)] 17 Claims
OG exemplary drawing
 
1. An off-board charger, comprising:
a power supply port;
a power conversion circuit that includes an output end connected to the power supply port;
a conversion adapter that includes a connection port and an alternating current output port, the connection port is configured to be connected to the power supply port, and the alternating current output port is configured to be connected to a charging port of a powered device; and
a controller configured to:
control, when the conversion adapter is connected to the power supply port, the power supply port to connect to an alternating current power grid, the power supply port to connect to the connection port, and the alternating current output port to connect to the charging port of the powered device; or
control, when the conversion adapter is disconnected from the power supply port, an input end of the power conversion circuit to connect to an alternating current power grid, and the power supply port to connect to the charging port of the powered device;
an identification resistor circuit configured to adjust an identification resistance of the alternating current output port; and
the controller is further configured to: control, when the conversion adapter is connected to the power supply port, the identification resistor circuit to adjust the identification resistance of the alternating current output port, so that an identification resistance of the alternating current output port is a target resistance and the off-board charger completes handshake communication with the powered device.