公开(公告)号：US20240021861A1

公开(公告)日：2024-01-18

申请号：US18475769

申请日：2023-09-27

Applicant: BYD COMPANY LIMITED

Inventor： Peng LU ,  Qingbo PENG ,  Zhipei LU

IPC: H01M10/04 ,  H01M50/233 ,  H01M50/211

CPC classification number: H01M10/049 ,  H01M50/233 ,  H01M50/211 ,  H01M2220/20

Abstract: Provided are a battery pack using a method for assembling a battery pack and a vehicle. The battery pack includes a box and battery modules. The box is provided with cavities inside. The battery module includes foam and multiple cells. The foam is arranged between adjacent cells. The method for assembling a battery pack includes the following steps: the battery module is loaded into an insulating bag; the insulating bag is vacuumized so that the foam is compressed to reduce the volume of the battery module; and after the battery module of the reduced volume is inserted into the cavity, a vacuum state is released and positive and negative electrodes of the battery module are exposed.

公开(公告)号：US20200328399A1

公开(公告)日：2020-10-15

申请号：US16772715

申请日：2017-12-13

Applicant: BYD COMPANY LIMITED

Inventor： Luxia JIANG ,  Shichao HU ,  Peng LU ,  Xinyue WANG ,  Feifei WANG

IPC: H01M2/34

Abstract: A battery cover plate assembly, a cell, battery module, a power battery, and an electric vehicle are provided. The battery cover plate assembly includes a cover plate, an inner electrode terminal, and an outer electrode terminal. The inner electrode terminal and the outer electrode terminal are electrically connected by using a current interrupt device. The current interrupt device includes a score member and a flipping member. The flipping member is electrically connected to the score member. In addition, the flipping member can act under an effect of air pressure to break a score on the score member. The flipping member forms an elongated structure extending along the cover plate.

公开(公告)号：US20240021916A1

公开(公告)日：2024-01-18

申请号：US18475519

申请日：2023-09-27

Applicant: BYD COMPANY LIMITED

Inventor： Jianglong TANG ,  Shu GUO ,  Peng LU ,  Xin LI

IPC: H01M10/6568 ,  H01M10/6556 ,  H01M10/651

CPC classification number: H01M10/6568 ,  H01M10/6556 ,  H01M10/651 ,  H01M10/613

Abstract: A power battery has a box. The box includes a tray, a liquid cooling plate, and a cold expansion portion. An accommodating space for accommodating cells is provided in the tray. The liquid cooling plate is connected to the tray at an outer surface of at least one of the top and bottom of the tray. A flow channel through which a cooling liquid flows is defined jointly by the liquid cooling plate and the outer surface of the tray. The cold expansion portion is arranged in the flow channel, and is connected to at least one of the tray and the liquid cooling plate. A liquid-passing cross-sectional area of the flow channel corresponding to an expansion region is reduced when the cold expansion portion expands.

公开(公告)号：US20210050581A1

公开(公告)日：2021-02-18

申请号：US16963113

申请日：2019-01-10

Applicant: BYD COMPANY LIMITED

Inventor： Peng LU ,  Luxia JIANG ,  Xinyue WANG ,  Keli YANG

IPC: H01M2/30 ,  H01M2/10

Abstract: A battery, a battery pack, and a vehicle are disclosed. The battery includes a housing having a sealed chamber, a core packaged in the sealed chamber, and a first terminal and a second terminal respectively mounted to the housing, where the first terminal is electrically connected to the housing, and the second terminal is insulated from the housing. The battery further includes a first tab and a second tab respectively led out from the core, the first tab being electrically connected to the housing, the first tab being electrically connected to the first terminal through the housing, and the second tab being electrically connected to the second terminal.

公开(公告)号：US20200168884A1

公开(公告)日：2020-05-28

申请号：US16626829

申请日：2018-05-28

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue WANG ,  Luxia JIANG ,  Shichao HU ,  Peng LU ,  Han CHENG ,  Keli YANG

IPC: H01M2/26 ,  H01M2/02 ,  H01M2/12 ,  H01M2/10

Abstract: A battery cover plate assembly includes a cover plate, an electrode terminal, a current interrupt structure, and an arc extinguishing portion. The electrode terminal is disposed on the cover plate and includes an electrode inner terminal and an electrode outer terminal. The electrode inner terminal and the electrode outer terminal are electrically connected through the current interrupt structure. The current interrupt structure is capable of disrupting the electrical connection between the electrode inner terminal and the electrode outer terminal under the action of a gas pressure. The arc extinguishing portion is configured to reduce an electric arc generated when the current interrupt structure disrupts the electrical connection between the electrode inner terminal and the electrode outer terminal. When the electrical connection between the electrode inner terminal and the electrode outer terminal is disrupted, an arcing effect is generated due to high voltages at positive and negative electrodes of the battery.

公开(公告)号：US20230268560A1

公开(公告)日：2023-08-24

申请号：US18310782

申请日：2023-05-02

Applicant: BYD COMPANY LIMITED

Inventor： Peng LU ,  Qingbo PENG ,  Weixin ZHENG

IPC: H01M10/42 ,  H01M10/44 ,  H01M10/46

CPC classification number: H01M10/4228 ,  H01M10/44 ,  H01M10/46

Abstract: A battery pack includes a controller, a battery core, a liquid leakage detector, and a pre-charge switch. The liquid leakage detector is connected with the controller, and the liquid leakage detector is configured to send a liquid leakage signal to the controller when detecting that liquid leakage occurs in the battery core. The controller is configured to prohibit sending a pre-charge on signal to the pre-charge switch upon receiving the liquid leakage signal while receiving a start signal for starting the battery core. The pre-charge switch is configured to prohibit connection of the pre-charge voltage end and the power output end when not receiving the pre-charge on signal, to prohibit the battery core from outputting a pre-charge voltage through the power output end.

公开(公告)号：US20220416336A1

公开(公告)日：2022-12-29

申请号：US17781306

申请日：2020-10-23

Applicant: BYD COMPANY LIMITED

Inventor： Peng LU ,  Zhipei LU ,  Xinyue WANG ,  Dongjun DENG ,  Yan ZHU

IPC: H01M50/164 ,  H01M50/159 ,  H01M50/543 ,  H01M50/148 ,  H01M50/593

Abstract: A cover plate assembly, a battery, a battery module, a power battery pack, and an electric vehicle are disclosed. The cover plate assembly includes a cover plate body (1), a first electrode terminal (2), a second electrode terminal, and a resistive coating (3). The second electrode terminal is insulatively connected with the cover plate body (1). The first electrode terminal (2) is electrically connected with the cover plate body (1) by the resistive coating (3). The resistive coating (3) includes a weak portion (331). When a current flowing through the resistive coating (3) is greater than a predetermined threshold, the weak portion (331) is melted to disconnect the cover plate body (1) from the first electrode terminal (2).

公开(公告)号：US20240347838A1

公开(公告)日：2024-10-17

申请号：US18757816

申请日：2024-06-28

Applicant: BYD COMPANY LIMITED

Inventor： Weijia CHEN ,  Peng LU ,  Long WAN ,  Qingbo PENG ,  Liequn ZHU

IPC: H01M50/244 ,  H01M50/284 ,  H01M50/519

CPC classification number: H01M50/244 ,  H01M50/284 ,  H01M50/519 ,  H01M2220/20

Abstract: A battery cell assembly, a battery pack, and a vehicle are provided. The battery cell assembly includes at least two battery cells, a battery cell bracket, a flexible circuit board, and a connecting sheet. The at least two battery cells are disposed in a butt joint mode along the length direction of the battery cells. The battery cell bracket is connected at a junction position between adjacent battery cells. The flexible circuit board is disposed on the top surface of the battery cell. The connecting sheet is fixed on the battery cell bracket, the connecting sheet is connected to tabs of the battery cells and the flexible circuit board, the connecting sheet has a sampling section, and the sampling section is located on the top surfaces of the battery cells and is configured to be connected to an external sampling device to sample the battery cells.

公开(公告)号：US20230112735A1

公开(公告)日：2023-04-13

申请号：US18079335

申请日：2022-12-12

Applicant: BYD COMPANY LIMITED

Inventor： Liangwen TAN ,  Peng LU ,  Na SONG ,  Jing TAN ,  Wenhui CHEN

IPC: B60K1/04 ,  H01M50/204 ,  H01M50/244 ,  H01M10/613 ,  H01M10/6554 ,  H01M10/42

Abstract: A battery pack includes a tray, multiple batteries, a distribution box, and a sealing plate. The tray includes an accommodating space, and the batteries and the distribution box are disposed in the accommodating space. The batteries are electrically connected to the distribution box. The tray includes a bottom plate, an access port in communication with the accommodating space is provided on the bottom plate, and the access port is disposed opposite to the distribution box. The sealing plate covers the access port, and the sealing plate is detachably connected to the bottom plate.