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：EP3550709A1

公开(公告)日：2019-10-09

申请号：EP17875909.8

申请日：2017-12-01

Applicant: BYD Company Limited

Inventor： ZHANG, Ni ,  WANG, Xinghui ,  WANG, Chao ,  SHEN, Xiaofeng ,  WU, Baihe

IPC: H02M3/335

Abstract: This application discloses an electric vehicle, a DC-DC converter thereof and a control method of the DC-DC converter. The control method includes the following steps: when the DC-DC converter works every time, acquiring total time TC for controlling an H-bridge in a third mode and total time TD for controlling the H-bridge in a fourth mode, and acquiring set time Ti for controlling the H-bridge in the third mode and set time Tm for controlling the H-bridge in the fourth mode in each working cycle during a working process of the DC-DC converter; judging a relation between the TC and the TD; and selecting the mode for controlling the H-bridge when the DC-DC converter is started according to the relation between the total time TC and the total time TD, and alternately controlling the H-bridge according to the Ti and the Tm, so as to perform temperature equalization control on a first switch tube, a second switch tube, a third switch tube and a fourth switch tube, thereby enabling heat generation of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube in the H-bridge to be relatively balanced, so as to prolong the working life of the switch tubes in the H-bridge.

公开(公告)号：EP3391500A1

公开(公告)日：2018-10-24

申请号：EP16874897.8

申请日：2016-12-16

Applicant: BYD Company Limited

Inventor： WANG, Xinghui

IPC: H02J7/00 ,  B60L11/18 ,  H02M7/219 ,  H02J7/02 ,  H02M1/32

CPC classification number: H02M7/219 ,  B60L53/22 ,  B60L2210/30 ,  B60L2240/525 ,  B60L2240/526 ,  H02J7/022 ,  H02M2001/327 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7241 ,  Y02T10/92 ,  Y02T90/127 ,  Y02T90/14

Abstract: The present disclosure provides an electric vehicle, a vehicle-mounted charger and a method for controlling the same. The method includes: obtaining a first charging predetermined period Tx for controlling the H bridge in a first manner and a second charging predetermined period Ty for controlling the H bridge in a second manner when the vehicle-mounted charger starts to charge a power battery of the electric vehicle; and performing an alternate control on the H bridge in the first manner or the second manner according to the first charging predetermined period Tx and the second charging predetermined period Ty, so as to perform a temperature balanced control over the first switch tube, the second switch tube, the third switch tube and the fourth switch tube.

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：EP3493356A1

公开(公告)日：2019-06-05

申请号：EP17833450.4

申请日：2017-07-17

Applicant: BYD Company Limited

Inventor： WANG, Xinghui

IPC: H02J7/02

Abstract: The present invention discloses an electric vehicle, a car charger for an electric vehicle and a control method thereof. The car charger includes: a charging contactor, a first end of which is configured for coupling to a first end of an alternating-current power source; an H bridge, including first and second alternating-current ends and first and second direct-current ends, where the first and second direct-current ends are configured for coupling to a power battery, the first alternating-current end is configured for coupling to a second end of the charging contactor, and the second alternating-current end is configured for coupling to a second end of the alternating-current power source; a first voltage sampling module, configured to sample a voltage of the first end of the charging contactor to obtain a first sampling voltage; a second voltage sampling module, configured to sample a voltage of the second end of the charging contactor to obtain a second sampling voltage; and a control module, configured to control the H bridge to perform an inversion operation when the alternating-current power source is coupled to the car charger such that the second sampling voltage has a synchronous phase and the same amplitude as the first sampling voltage, then control the charging contactor to pull in, and control the H bridge to perform a rectifying operation such that the alternating-current power source charges the power battery.

公开(公告)号：EP3390141A1

公开(公告)日：2018-10-24

申请号：EP16874893.7

申请日：2016-12-16

Applicant: BYD Company Limited

Inventor： WANG, Xinghui

IPC: B60L11/18

CPC classification number: B60L11/1851 ,  B60L11/1812 ,  B60L11/1816 ,  B60L11/1838 ,  B60L2210/30 ,  H02M7/5387 ,  H02M7/5395 ,  H02M7/793 ,  H02M2001/0054 ,  H02M2001/327 ,  H02M2007/2195 ,  Y02T10/7005 ,  Y02T10/705 ,  Y02T10/7072 ,  Y02T10/7241 ,  Y02T10/92 ,  Y02T90/121 ,  Y02T90/127 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/163

Abstract: An electric vehicle, a vehicle-mounted charger and a method for controlling the same. The method includes: obtaining a first total discharging period (TC) for controlling the H bridge in a first manner and a second total discharging period (TD) for controlling the H bridge in a second manner when a power battery discharges via the vehicle-mounted charger (S1); obtaining a first discharging predetermined period (Tm) for controlling the H bridge in the first manner and a second discharging predetermined period (Tn) for controlling the H bridge in the second manner (S2); selecting a manner for controlling the H bridge according to a relation between the first total discharging period (TC) and the second total discharging period (TD) (S3); and performing an alternate control on the H bridge in the first manner or the second manner according to the first discharging predetermined period (Tm) and the second discharging predetermined period (Tn) (S4).

公开(公告)号：EP3390143B1

公开(公告)日：2020-11-25

申请号：EP16874895.2

申请日：2016-12-16

Applicant: BYD Company Limited

Inventor： WANG, Xinghui

IPC: B60L50/50

公开(公告)号：EP3391501A1

公开(公告)日：2018-10-24

申请号：EP16874898.6

申请日：2016-12-16

Applicant: BYD Company Limited

Inventor： WANG, Xinghui

IPC: H02J7/00

CPC classification number: H02J7/047 ,  B60L11/1812 ,  B60L2210/30 ,  B60L2240/525 ,  B60L2240/526 ,  H02J7/022 ,  H02J7/027 ,  H02M1/4233 ,  H02M7/162 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7241 ,  Y02T10/92 ,  Y02T90/127 ,  Y02T90/14

Abstract: An electric vehicle, a vehicle-mounted charger and a method for controlling the same are provided. The method includes: obtaining a first total charging period for controlling the H bridge in a first manner and a second total charging period for controlling the H bridge in a second manner; obtaining a first charging predetermined period (Tx) for controlling the H bridge in the first manner and a second charging predetermined period (Ty) for controlling the H bridge in the second manner; selecting a manner according to a relation between the first total charging period (TA) and the second total charging period (TB); and performing an alternate control on the H bridge in the first manner or the second manner according to the first charging predetermined period (Tx) and the second charging predetermined period (Ty).

公开(公告)号：EP3390145A1

公开(公告)日：2018-10-24

申请号：EP16874899.4

申请日：2016-12-16

Applicant: BYD Company Limited

Inventor： WANG, Xinghui

IPC: B60L11/18

Abstract: The present disclosure provides an electric vehicle, a vehicle-mounted charger and a method for controlling the same. The method includes: obtaining a first total charging period for controlling the H bridge in a first manner, a second total charging period for controlling the H bridge in a second manner, a first total discharging period for controlling the H bridge in the first manner and a second total discharging period for controlling the H bridge in the second manner; calculating a first total working period in the first manner and a second total working period in the second manner; and selecting a manner according to a relation between the first total working period and the second total working period to perform a temperature balanced control over the first to fourth switch tube if the vehicle-mounted charger charges the power battery, or if the power battery discharges via the vehicle-mounted charger.