公开(公告)号：US12220988B2

公开(公告)日：2025-02-11

申请号：US17622626

申请日：2020-06-24

Applicant: BYD COMPANY LIMITED

Inventor： Lei Yan ,  Jicheng Li ,  Ye Lei ,  Feiyue Xie ,  Sijia Zheng

IPC: B60L15/20 ,  B60L53/24

Abstract: An energy conversion apparatus and a vehicle are provided. The energy conversion apparatus includes a motor coil of a motor (101), a bridge arm converter (102), a bus capacitor (103) connected to the bridge arm converter (102) in parallel, and a controller (104) connected to the bridge arm converter (102). When the energy conversion apparatus is connected to an external power supply, according to to-be-driven power of the motor and to-be-charged power of an external battery (105), the controller (104) controls the bridge arm converter (102) to cause electrical energy of the external power supply to flow to a drive-charging circuit, and adjusts a current of the drive-charging circuit, to cause the external power supply to drive the motor to output drive power and charge the external battery (105) at the same time.

公开(公告)号：US12132432B2

公开(公告)日：2024-10-29

申请号：US18074233

申请日：2022-12-02

Applicant: BYD COMPANY LIMITED

Inventor： Heping Ling ,  Lei Yan ,  Yong Xiong ,  Chen Hong ,  Junwei Zhang

IPC: H02P25/22 ,  H02P27/06 ,  H02P29/68

CPC classification number: H02P29/68 ,  H02P27/06

Abstract: An energy conversion device is provided, including: a first electrical motor control circuit, where the first electrical motor control circuit is connected with a battery pack; a second electrical motor control circuit, where the second electrical motor control circuit is connected with the first electrical motor control circuit in parallel; and a controller, configured to: when operating in a first control mode, control the first electrical motor control circuit to charge and discharge the battery pack to heat the battery pack, and control the second electrical motor control circuit to output torque.

公开(公告)号：US12132182B2

公开(公告)日：2024-10-29

申请号：US18008091

申请日：2021-06-04

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Hua Pan ,  Lei Yan ,  Feiyue Xie

IPC: B60L53/22 ,  B60L53/24 ,  B60L58/27 ,  H01M10/44 ,  H01M10/637 ,  H02P27/06

CPC classification number: H01M10/637 ,  B60L53/24 ,  B60L58/27 ,  H01M10/44 ,  H02P27/06

Abstract: The present disclosure relates to a battery energy processing device and method and a vehicle. The battery energy processing device includes: a bridge arm converter, having a first bus terminal connected with a positive electrode of a battery and a second bus terminal connected with a negative electrode of the battery; a motor winding, having a first end connected with a midpoint of the bridge arm converter; an energy storage device, respectively connected with a second end of the motor winding and the second bus terminal; and a controller, configured to control, in a first preset state, the bridge arm converter to charge and discharge the battery, so as to realize heating of the battery. In this way, the charging and discharging of the battery can be controlled, and internal resistance of the battery causes the battery to generate a large amount of heat, which causes a temperature rise of the battery, thereby realizing the heating of the battery.