公开(公告)号：EP4231493A1

公开(公告)日：2023-08-23

申请号：EP21879167.1

申请日：2021-09-08

Applicant: BYD Company Limited

Inventor： LIU, Weidong ,  WANG, Chao ,  WANG, Xinghui

IPC: H02J7/02 ,  B60L53/00

Abstract: The present disclosure provides a charging device and a vehicle. The charging device includes a power factor correction (PFC) circuit module. The PFC circuit module includes at least three-phase bridge arm. An input terminal of a first direct current (DC) conversion module is connected to an output terminal of the PFC circuit module, and an output terminal of the first DC conversion module is connected to a power battery. An input terminal of a second DC conversion module is connected to the output terminal of the first DC conversion module, and an output terminal of the second DC conversion module is connected to the storage battery. A first terminal of a switch module is connected to an input terminal of the PFC circuit module, and a second terminal of the switch module is connected to an alternating-current input terminal. The three-phase bridge arm of the PFC circuit module are controlled to be all turned on during three-phase charging, or one of the three-phase bridge arm of the PFC circuit module is controlled to be turned on during one-way charging. A control module is respectively connected to control terminals of the PFC circuit module, the first DC conversion module, the second DC conversion module, and the switch module.

公开(公告)号：EP4216397A1

公开(公告)日：2023-07-26

申请号：EP21879172.1

申请日：2021-09-09

Applicant: BYD Company Limited

Inventor： LIU, Weidong ,  WANG, Chao ,  WANG, Xinghui

IPC: H02J7/00 ,  H02M3/335 ,  H02M1/14 ,  H02M1/42 ,  B60L53/00 ,  B60L1/00

Abstract: The present disclosure provides a charging device, a vehicle, and a method for controlling charging of a charging device. The charging device includes a first DC conversion module and control module. The first DC conversion module is configured to convert a DC signal outputted by a power battery to a DC signal required for a storage battery. The first DC conversion module includes a first half-bridge logical link control (LLC) circuit unit and a second half-bridge LLC circuit unit arranged in parallel. The control module is connected with the first half-bridge LLC circuit unit and the second half-bridge LLC circuit unit and configured to acquire a total output current of the first DC conversion module, and control the first half-bridge LLC circuit unit and the second half-bridge LLC circuit unit to operate alternately when the total output current is less than a current threshold. The charging device in embodiments of the present disclosure can reduce the switching loss and improve the charging efficiency.

公开(公告)号：EP4207538A1

公开(公告)日：2023-07-05

申请号：EP21874254.2

申请日：2021-09-15

Applicant: BYD Company Limited

Inventor： LIU, Weidong ,  WANG, Chao ,  WANG, Xinghui

IPC: H02J7/00 ,  B60L53/20

Abstract: The present disclosure discloses a charging control method and device for a hybrid electric vehicle and a vehicle. The charging control method includes: acquiring a first voltage of a power battery and a second voltage of a storage battery when receiving a charging instruction; disconnecting an OBC module from the power battery and charging the storage battery through the OBC module and a DC module when the first voltage is less than a first voltage threshold and the second voltage is less than a second voltage threshold; and connecting the OBC module to the power battery and charging the power battery through the OBC module when a charging duration of the storage battery reaches a preset duration.

公开(公告)号：EP4395109A1

公开(公告)日：2024-07-03

申请号：EP22886044.1

申请日：2022-10-26

Applicant: BYD Company Limited

Inventor： LIU, Weidong ,  WANG, Chao ,  WANG, Xinghui

IPC: H02J7/00 ,  H02M7/02 ,  H02M7/21

CPC classification number: Y02T10/7072 ,  Y02T10/70 ,  H02J7/02 ,  H02J7/00 ,  B60L53/00 ,  H02M7/02 ,  H02M7/21

Abstract: A method and system for charging control, and a vehicle. The method includes: when a first end of a switching circuit (102) is connected to external power supply (105), acquiring a phase voltage and a line voltage of any two-phase first terminals in M phases of first terminals; determining a power supply mode of the external power supply (105) according to the phase voltage and the line voltage; and controlling the switching circuit (102) and a charging circuit (103) to charge a target battery (106) according to the power supply mode.

公开(公告)号：EP4342721A1

公开(公告)日：2024-03-27

申请号：EP22874296.1

申请日：2022-06-17

Applicant: BYD Company Limited

Inventor： WANG, Xinghui ,  WANG, Chao ,  LIU, Weidong

IPC: B60L53/22 ,  H02J7/02 ,  G01R31/54 ,  G01R31/36

Abstract: The present disclosure discloses an on-board charger and an electric vehicle. The on-board charger includes a microprocessor and a DC module. A first sampling point is arranged between the DC module and a storage battery. A second sampling point is arranged between the storage battery and the microprocessor. The microprocessor is configured to: obtain a first voltage and a current value of the first sampling point, and obtain a second voltage of the second sampling point; and mark the connection between the storage battery and the DC module as 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 value is less than a preset current threshold.