公开(公告)号：US20230249564A1

公开(公告)日：2023-08-10

申请号：US18299021

申请日：2023-04-11

Applicant: BYD COMPANY LIMITED

Inventor： Weidong LIU ,  Chao WANG ,  Xinghui WANG

IPC: B60L53/20 ,  H02M3/335 ,  H02M1/42

CPC classification number: B60L53/20 ,  H02M3/33569 ,  H02M1/4208 ,  B60L2210/10 ,  B60L2210/30

Abstract: A charging device includes a PFC circuit, a first DC conversion module, a second DC conversion module, a switch module, and a control module. The PFC circuit includes at least three-phase bridge arm and is configured to perform PFC on an input AC and output a DC signal after the PFC. The first DC conversion module and the second DC conversion module are coupled to the PFC circuit to convert the AC signal. The switch module configured to turn on the three-phase bridge arm of the PFC circuit during three-phase charging or turn on one of the three-phase bridge arm of the PFC circuit during one-way charging. The control module is connected to the PFC circuit, the first and second DC conversion modules, and the switch module to control the charging device to perform single-phase charging or three-phase charging.

公开(公告)号：US20230238609A1

公开(公告)日：2023-07-27

申请号：US18126699

申请日：2023-03-27

Applicant: BYD COMPANY LIMITED

Inventor： Yongnan WANG ,  Yi ZENG ,  Zhengyuan LIAO ,  Fuzhu LAI

IPC: H01M10/6568 ,  H01M50/204 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/613

CPC classification number: H01M10/6568 ,  H01M50/204 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/613

Abstract: A tray for a battery pack, includes a bottom plate, a frame, an external connecting tube and an adapter piece. The frame is connected to the bottom plate and defines an accommodating cavity with the bottom plate, and includes a first side beam, where a first accommodating groove is formed on the first side beam. An inner end of the external connecting tube extends into the first side beam. The adapter piece is disposed on the bottom plate and comprises a joining flow channel, and includes a first connecting portion and a second connecting portion, where the first connecting portion is connected to the bottom plate, and the second connecting portion is connected to the inner end of the external connecting tube. The adapter piece is disposed in the first accommodating groove, and the first connecting portion and the second connecting portion are buried in first side beam.

公开(公告)号：US20230238603A1

公开(公告)日：2023-07-27

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

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

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.

公开(公告)号：US20230238513A1

公开(公告)日：2023-07-27

申请号：US18121909

申请日：2023-03-15

Applicant: BYD COMPANY LIMITED

Inventor： Na CHEN ,  Minghao ZHUANG ,  Rong HAO ,  Yi PAN

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  C01B25/45

CPC classification number: H01M4/364 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  C01B25/45 ,  H01M2004/021

Abstract: A positive electrode material includes a first lithium manganese iron phosphate material in an aggregate form, a second and third lithium manganese iron phosphate materials in an aggregate and/or single-crystal-like form, and a fourth and fifth lithium manganese iron phosphate materials in a single-crystal-like form. D505

公开(公告)号：US20230236257A1

公开(公告)日：2023-07-27

申请号：US18189607

申请日：2023-03-24

Applicant: BYD COMPANY LIMITED

Inventor： Tianyu FENG ,  Linwang DENG ,  Shiwei SHU ,  Xiaoqian LI

IPC: G01R31/389 ,  G01R25/00 ,  G01R23/16 ,  H02J7/00

CPC classification number: G01R31/389 ,  G01R23/16 ,  G01R25/00 ,  H02J7/0047

Abstract: A method for generating an electrochemical impedance spectrum for a battery includes: collecting, in a discharge state of a battery, battery discharge information of the battery periodically according to a preset collection interval, where the battery discharge information includes collection time, and current information and voltage information associated with the collection time; performing Fourier transform according to the collection interval and battery discharge information, to obtain multiple frequency-based first battery signals; determining a second battery signal from the multiple first battery signals, where the second battery signal includes a voltage signal greater than or equal to a preset voltage threshold; and determining an electrochemical impedance at a corresponding frequency according to the second battery signal, and constructing an electrochemical impedance spectrum according to all the electrochemical impedance.

公开(公告)号：US20230231227A1

公开(公告)日：2023-07-20

申请号：US18126736

申请日：2023-03-27

Applicant: BYD COMPANY LIMITED

Inventor： Yongnan WANG ,  Yi ZENG ,  Zhengyuan LIAO ,  Fuzhu LAI ,  Weixin ZHENG

IPC: H01M10/6568 ,  H01M10/6554

CPC classification number: H01M10/6568 ,  H01M10/6554

Abstract: A battery pack includes a battery assembly and a tray. The battery assembly includes at least one battery unit, and the battery unit includes multiple cells, where the length direction of each cell is a first direction, and the multiple cells are disposed along a second direction. The tray includes at least one temperature adjustment unit, where the temperature adjustment unit includes a temperature adjustment flow channel and a confluence flow channel. Any one of the temperature adjustment flow channels is configured to exchange heat with at least one of the cells disposed along the second direction, and to exchange heat with at most one cell disposed along the first direction.

公开(公告)号：US20230223547A1

公开(公告)日：2023-07-13

申请号：US18174795

申请日：2023-02-27

Applicant: BYD COMPANY LIMITED

Inventor： Riguo MEI ,  Xiaoya CHANG ,  Zhengjiao LIU ,  Ziwen WU ,  Yi PAN

IPC: H01M4/62 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M4/628 ,  H01M4/134 ,  H01M10/0525

Abstract: Provided are an electrode plate and a lithium-ion battery, the electrode plate includes a current collector layer, a semiconductor layer and an alkali metal replenishing layer. The semiconductor layer is disposed on at least one surface of the current collector layer. The alkali metal replenishing layer is a lithium-replenishing agent layer or a sodium-replenishing agent layer. The alkali metal replenishing layer is arranged on a side of the semiconductor layer far away from the current collector layer.

公开(公告)号：US20230207913A1

公开(公告)日：2023-06-29

申请号：US18173737

申请日：2023-02-23

Applicant: BYD COMPANY LIMITED

Inventor： Jing TAN ,  Yongming ZHANG ,  Xunfeng DING

IPC: H01M10/48 ,  H01M50/119 ,  H01M10/42

CPC classification number: H01M10/48 ,  H01M10/425 ,  H01M50/119 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A detection mesh, a battery cell, a battery module, and an electric vehicle are provided. The detection mesh includes a first conductive piece and a second conductive piece. The first conductive piece includes a first lead-out piece and multiple first protrusions arranged side by side on the first lead-out piece. The second conductive piece includes a second lead-out piece and multiple second protrusions arranged side by side on the second lead-out piece. The multiple first protrusions and the multiple second protrusions are alternate with each other successively and spaced apart from each other.

公开(公告)号：US20230201793A1

公开(公告)日：2023-06-29

申请号：US18086729

申请日：2022-12-22

Applicant: BYD COMPANY LIMITED

Inventor： Jialiang WEI ,  Hongye LIN ,  Junlan LIAN

IPC: B01J20/08 ,  B01J20/26 ,  B01J20/28 ,  B01J20/284 ,  B01J20/34 ,  C01D15/04 ,  B01D15/08

CPC classification number: B01J20/08 ,  B01J20/261 ,  B01J20/262 ,  B01J20/2803 ,  B01J20/2808 ,  B01J20/28083 ,  B01J20/28085 ,  B01J20/284 ,  B01J20/3475 ,  B01J20/3433 ,  C01D15/04 ,  B01D15/08

Abstract: A lithium adsorbent includes an aluminum-based adsorbing material, a binder, and a wetting and dispersing agent. The binder includes at least one of a vinylidene fluoride-chlorotrifluoroethylene (VDF-CTFE) copolymer and a fluoroolefin-vinyl ether copolymer. The wetting and dispersing agent includes one or more of polyethylene glycol, sodium polyacrylate, polyvinyl alcohol, and formaldehyde condensate.

公开(公告)号：US11685250B2

公开(公告)日：2023-06-27

申请号：US17287068

申请日：2019-10-25

Applicant: BYD COMPANY LIMITED

Inventor： Yubo Lian ,  Heping Ling ,  Zhen Zhai

IPC: B60K6/36 ,  B60K6/48 ,  B60K6/547

CPC classification number: B60K6/36 ,  B60K6/48 ,  B60K6/547 ,  B60K2006/4816 ,  B60K2006/4841

Abstract: A hybrid power-driven system and a vehicle are provided. The hybrid power-driven system includes an engine, a transmission, and a motor power apparatus. The transmission includes a transmission mechanism and a main reducer. The motor power apparatus includes a motor and a power distribution mechanism. The power distribution mechanism includes a motor power distribution shaft, a mode selection apparatus, a first transmission apparatus, and a second transmission apparatus. The motor power distribution shaft is disposed independently from the transmission mechanism, and the motor power distribution shaft is disposed independently from the motor. A motor driven gear configured to receive power of the motor is disposed on the motor power distribution shaft.