公开(公告)号：US20230097060A1

公开(公告)日：2023-03-30

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: 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：US20230294557A1

公开(公告)日：2023-09-21

申请号：US18018252

申请日：2021-07-26

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Yong XIONG ,  Gan SONG ,  Yili LUO

IPC: B60L58/26 ,  B60L58/27

CPC classification number: B60L58/26 ,  B60L58/27

Abstract: A vehicle battery thermal management system includes a heat conducting element connected to a vehicle air conditioning system and a self-heating circuit connected to a vehicle power battery. The heat conducting element, a compressor of the vehicle air conditioning system, and an outdoor condenser of the vehicle air conditioning system form a battery refrigeration loop, and the battery refrigeration loop absorbs heat from the vehicle power battery through a refrigerant in the heat conducting element to cool down the vehicle power battery. The self-heating circuit and the vehicle power battery form a battery self-heating loop, and the self-heating circuit is configured to control the vehicle power battery to perform high-frequency alternating charging and discharging for self-heating in the battery self-heating loop.

公开(公告)号：US20240375547A1

公开(公告)日：2024-11-14

申请号：US18782925

申请日：2024-07-24

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Gan SONG ,  Lei YAN ,  Yong XIONG

IPC: B60L58/25 ,  B60H1/00 ,  B60H1/32 ,  B60L58/26 ,  B60L58/27 ,  H01M10/613 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H01M10/657 ,  H01M10/663 ,  H02M7/5387 ,  H02P27/00

Abstract: An integrated heat management system includes: a heat pump subsystem, configured to exchange heat with a passenger compartment and a battery of a vehicle; a high-pressure cooling subsystem, configured to exchange heat with a high-pressure system of the vehicle and the heat pump subsystem; a battery self-heating subsystem, configured to heat the battery through charging and discharging; an air heating subsystem, configured to exchange heat with the passenger compartment; the heat pump subsystem including a compressor and a control valve, one end of the control valve being in communication with an exhaust port of the compressor, and an other end of the control valve being in communication with an air return port of the compressor directly or through a gas-liquid separator; and a control subsystem, configured to control the control valve to be in communication with the exhaust port and the air return port of the compressor.

公开(公告)号：US20230097027A1

公开(公告)日：2023-03-30

申请号：US18074448

申请日：2022-12-02

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Lei YAN ,  Yong XIONG ,  Wen GAO

IPC: H01M10/63 ,  H01M10/615 ,  H01M10/44 ,  H02M7/483

Abstract: The present disclosure belongs to the field of vehicles, and relates to a battery energy processing device and method and a vehicle, which can charge batteries during self-heating of the batteries. The battery energy processing device includes: an energy exchange interface; a first circuit, wherein a first end of the first circuit is connected with the energy exchange interface, and a second end of the first circuit is connected with a battery; a second circuit, wherein a first end of the second circuit is connected with the battery; an energy storage device, connected with a second end of the second circuit; and a controller, configured to: in a first preset state, control the second circuit to charge and discharge the battery to heat the battery, and control the first circuit to receive energy from the energy exchange interface and output the energy to the battery to charge the battery.