公开(公告)号：US20220355686A1

公开(公告)日：2022-11-10

申请号：US17624076

申请日：2020-06-18

Applicant: BYD COMPANY LIMITED

Inventor： Jingcui TENG ,  Yu LIU ,  Shulin LIANG ,  Chao WANG ,  Hongbin LUO

IPC: B60L53/22 ,  H02J7/02 ,  H02P27/06

Abstract: An energy conversion device is provided, including a motor coil (11), a bridge arm converter (12), and a bidirectional bridge arm (13). The bridge arm converter (12) is connected to the motor coil (11) and the bidirectional bridge arm (13). The motor coil (11), the bridge arm converter (12), and the bidirectional bridge arm (13) are all connected to an external charging port (10). Both the bridge arm converter (12) and the bidirectional bridge arm (13) are connected to an external battery 200. The motor coil (11), the bridge arm converter (12), and the external charging port (10) form a DC charging circuit for charging the external battery 200. The motor coil (11), the bridge arm converter (12), the bidirectional bridge arm (13), and the external charging port (10) form an AC charging circuit for charging the external battery (200). The motor coil (11), the bridge arm converter (12), and the external battery (200) form a motor drive circuit.

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

IPC: B60L53/22 ,  B60L53/14 ,  H02J7/00

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.

公开(公告)号：US20220360184A1

公开(公告)日：2022-11-10

申请号：US17624055

申请日：2020-06-18

Applicant: BYD COMPANY LIMITED

Inventor： Jingcui TENG ,  Shulin LIANG ,  Yu LIU ,  Chao WANG

IPC: H02M3/335

Abstract: This application discloses an energy conversion apparatus, a power system, and a vehicle. The energy conversion apparatus includes: an inductor (12), where an end of the inductor is connected to an external charging port (2); a bridge arm converter (13), connected between an external battery (3) and the external charging port (2), where the bridge arm converter (13) includes a first phase bridge arm (131), a second phase bridge arm (132), and a third phase bridge arm (133) connected in parallel, and the other end of the inductor (12) is connected to the first phase bridge arm (131); a voltage transformation unit (14), where an input end of the voltage transformation unit is respectively connected to the second phase bridge arm (132) and the third phase bridge arm (133); and a first bidirectional H-bridge (15), connected between an output end of the voltage transformation unit (14) and the external battery (3).