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公开(公告)号：US20230226933A1
公开(公告)日：2023-07-20
申请号：US18121943
申请日：2023-03-15
Applicant: BYD COMPANY LIMITED
Inventor： Weidong LIU , Chao WANG , Xinghui WANG
CPC classification number: B60L53/18 , B60L58/18 , B60L2240/547 , B60L2240/549 , B60L2210/10
Abstract: A method for charging control of a hybrid electric vehicle, includes: receiving a charging instruction; acquiring a first voltage of a power battery and a second voltage of a storage battery in response to receiving the charging instruction; in response to determining that the first voltage is less than the first voltage threshold and the second voltage is less than the second voltage threshold, disconnecting the OBC from the power battery and charging the storage battery through the OBC and the DC for a charging duration; and in response to that the charging duration of the storage battery reaches a duration threshold, connecting the OBC to the power battery and charging the power battery through the OBC.
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公开(公告)号：US20230249564A1
公开(公告)日：2023-08-10
申请号：US18299021
申请日：2023-04-11
Applicant: BYD COMPANY LIMITED
Inventor： Weidong LIU , Chao WANG , Xinghui WANG
CPC classification number: B60L53/20 , H02M3/33569 , H02M1/4208 , B60L2210/10 , B60L2210/30
Abstract: A charging device includes a PFC circuit, a first DC conversion module, a second DC conversion module, a switch module, and a control module. The PFC circuit includes at least three-phase bridge arm and is configured to perform PFC on an input AC and output a DC signal after the PFC. The first DC conversion module and the second DC conversion module are coupled to the PFC circuit to convert the AC signal. The switch module configured to turn on the three-phase bridge arm of the PFC circuit during three-phase charging or turn on one of the three-phase bridge arm of the PFC circuit during one-way charging. The control module is connected to the PFC circuit, the first and second DC conversion modules, and the switch module to control the charging device to perform single-phase charging or three-phase charging.
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公开(公告)号：US20240092202A1
公开(公告)日：2024-03-21
申请号：US18524903
申请日：2023-11-30
Applicant: BYD COMPANY LIMITED
Inventor： Xinghui WANG , Chao WANG , Weidong LIU
CPC classification number: B60L53/22 , B60L53/14 , H02J7/0013 , H02J7/007182 , H02J2207/20
Abstract: A on-board charger includes a microprocessor and a storage battery connected with a DC charger. A first sampling point is disposed between the DC charger and a storage battery. A second sampling point is disposed between the storage battery and the microprocessor. The microprocessor is configured to: obtain a first voltage and a current of the first sampling point, and obtain a second voltage of the second sampling point; and determine the connection between the storage battery and the DC module is cut off and record a first difference between the second voltage and the first voltage, when the first voltage is greater than the second voltage and the current is less than a preset current threshold.
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公开(公告)号：US20230261492A1
公开(公告)日：2023-08-17
申请号：US18295610
申请日：2023-04-04
Applicant: BYD COMPANY LIMITED
Inventor： Weidong LIU , Chao WANG , Xinghui WANG
CPC classification number: H02J7/007 , B60L53/22 , H02M1/42 , H02M1/126 , H02M3/33584 , B60L2210/10 , H02J2207/20
Abstract: A charging device includes a first DC convertor and controller. The first DC convertor is configured to convert a DC signal outputted by a power battery to a DC signal required for a storage battery. The first DC convertor includes a first half-bridge logical link control (LLC) circuit and a second half-bridge LLC circuit arranged in parallel. The controller is connected with the first half-bridge LLC circuit and the second half-bridge LLC circuit and configured to acquire a total output current of the first DC convertor, and control the first half-bridge LLC circuit and the second half-bridge LLC circuit to operate alternately when the total output current is less than a current threshold.
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