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

IPC: H02J7/00 ,  B60L53/22 ,  H02M1/12 ,  H02M3/335 ,  H02M1/42

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.

公开(公告)号：US20200269716A1

公开(公告)日：2020-08-27

申请号：US15776279

申请日：2016-12-16

Applicant: BYD COMPANY LIMITED

Inventor： Xinghui WANG

IPC: B60L53/62 ,  H02J7/06 ,  B60L50/60

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 predetermined discharging-period Tm for controlling the H bridge in a first manner and a second predetermined discharging-period Tn 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 predetermined discharging-period Tm and the second predetermined discharging-period Tn, so as to perform a temperature balanced control over the first switch transistor, the second switch transistor, the third switch transistor and the fourth switch transistor.

公开(公告)号：US20180375366A1

公开(公告)日：2018-12-27

申请号：US16061999

申请日：2016-12-16

Applicant: BYD COMPANY LIMITED

Inventor： Xinghui WANG

IPC: H02J7/02 ,  H01M10/44 ,  H01M10/617 ,  H01M10/625 ,  H02J7/00 ,  B60L11/18 ,  H02M7/757

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 time and a second total charging time in a second manner, and a first total discharging time and a second total discharging time in the second manner; calculating a first total working time in the first manner and a second total working time in the second manner; obtaining a first predetermined charging time in the first manner, a second predetermined charging time in the second manner, a first predetermined discharging time in the first manner and a second predetermined discharging time in the second manner; selecting a manner according to the first and second total working time; and performing an alternate control according to the first and second predetermined charging time or according to the first and second predetermined discharging time.

公开(公告)号：US20180370381A1

公开(公告)日：2018-12-27

申请号：US16062383

申请日：2016-12-16

Applicant: BYD COMPANY LIMITED

Inventor： Xinghui WANG

IPC: B60L11/18 ,  H02M7/5395

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 discharging time for controlling the H bridge in a first manner and a second total discharging time for controlling the H bridge in a second manner when a power battery discharges via the vehicle-mounted charger; obtaining a first discharging predetermined time for controlling the H bridge in the first manner and a second discharging predetermined time for controlling the H bridge in the second manner; selecting a manner for controlling the H bridge according to a relation between the first total discharging time and the second total discharging time; and performing an alternate control on the H bridge in the first manner or the second manner according to the first discharging predetermined time and the second discharging predetermined time.

公开(公告)号：US20180370370A1

公开(公告)日：2018-12-27

申请号：US16060803

申请日：2016-12-16

Applicant: BYD COMPANY LIMITED

Inventor： Xinghui WANG

IPC: B60L11/18 ,  B60L3/00

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.