公开(公告)号：EP4148895A1

公开(公告)日：2023-03-15

申请号：EP21808919.1

申请日：2021-04-16

Applicant: BYD Company Limited

Inventor： HU, Shichao ,  ZHANG, Mingming ,  ZHU, Yan

IPC: H01M50/51 ,  H01M50/593

Abstract: The present disclosure provides a battery, a battery pack and a vehicle. The battery includes a housing and multiple electrode core assemblies packaged in the housing. Each of the electrode core assemblies includes a packing film and at least one electrode core, and the at least one electrode core is located in an accommodating cavity defined by the packing film. A spacer is arranged between every two of the electrode core assemblies connected in series. Each of the electrode core assemblies includes a first electrode and a second electrode. The first electrode and the second electrode extend out of the packing film. The first electrode of one electrode core assembly of the every two of the electrode core assemblies connected in series is connected to the second electrode of the other electrode core assembly, and a connecting portion between the first electrode and the second electrode correspondingly connected is accommodated in a through hole. The spacer includes an outer circumferential surface facing an inner surface of the housing. At least one first positioning portion is formed on the outer circumferential surface of the spacer, at least one second positioning portion corresponding one-to-one to the at least one first positioning portion is formed on the inner surface of the housing, and the at least one first positioning portion is engaged with the corresponding at least one second positioning portion to fix the spacer and the housing.

公开(公告)号：EP4138181A1

公开(公告)日：2023-02-22

申请号：EP21809869.7

申请日：2021-04-16

Applicant: BYD Company Limited

Inventor： HU, Shichao ,  ZHANG, Mingming

IPC: H01M50/10 ,  H01M50/20 ,  H01M50/529

Abstract: The present disclosure provides a battery, including a metal housing and multiple electrode core sets packaged in the metal housing. The electrode core sets are connected in series. The electrode core set includes a package diaphragm and at least one electrode core, the at least one electrode core being arranged in an accommodating cavity surrounded by the package diaphragm. An insulating separator is arranged between each two electrode core sets connected in series. A through hole is provided in the insulating separator. The electrode core set includes a first electrode and a second electrode for leading out a current. The first electrode of one electrode core set of the two electrode core sets connected in series is connected to the second electrode of the other electrode core set, and a connecting part of the first electrode and the second electrode connected correspondingly is accommodated in the through hole. The insulating separator includes a peripheral surface facing an inner surface of the metal housing. A metal member is arranged on the peripheral surface of the insulating separator. The metal member is connected to the metal housing to fix the insulating separator with the metal housing.

公开(公告)号：EP4138180A1

公开(公告)日：2023-02-22

申请号：EP21807919.2

申请日：2021-04-20

Applicant: BYD Company Limited

Inventor： HU, Shichao ,  ZHU, Yan

IPC: H01M50/10 ,  H01M50/50 ,  H01M50/20

Abstract: The present disclosure provides a battery core assembly (10), a battery (100), a battery pack (200), and a vehicle (300). The battery core assembly includes an encapsulation film (11) and an electrode core assembly (12) encapsulated in the encapsulation film. The electrode core assembly includes an electrode core assembly body (123) and two electrode lead-out members (122) of opposite polarities electrically connected to the electrode core assembly body. The electrode core assembly body includes at least two electrode cores (121) connected in parallel. Each of the electrode cores includes an electrode core body (1211) and two tabs (1213) of opposite polarities that are electrically connected to the electrode core body. The electrode core assembly body further includes a tab support (124). The two electrode lead-out members are respectively electrically connected to one of the tab supports located two sides of the electrode core assembly body in a first direction. Moreover, the present disclosure further provides a battery, a battery pack, and a vehicle.

公开(公告)号：EP4109651A1

公开(公告)日：2022-12-28

申请号：EP21757406.0

申请日：2021-02-04

Applicant: BYD Company Limited

Inventor： HU, Shichao ,  PENG, Qingbo ,  ZHU, Yan

IPC: H01M50/209 ,  H01M50/51

Abstract: A cell (100), a battery module (300), a battery pack (200), and an electric vehicle (1000) are provided. The cell (100) includes a metal housing (11) and at least one electrode core assembly array (14) encapsulated inside the metal housing (11). The electrode core assembly array (14) includes N rows and M columns of electrode core assemblies (12), and the electrode core assembly (12) includes an encapsulation film and at least one electrode core encapsulated inside the encapsulation film. In a length direction of the cell (100), the electrode core assemblies (12) are arranged in rows and each row includes M electrode core assemblies (12). In a thickness or height direction of the cell (100), the electrode core assemblies (12) are arranged in columns and each column includes N electrode core assemblies (12). The N electrode core assemblies (12) in each column are connected in series to form an electrode core assembly string (13). The M electrode core assembly strings (13) are connected in series. M and N are integers greater than 1. An air pressure between the metal housing (11) and the encapsulation film is lower than an air pressure outside the metal housing (11).

公开(公告)号：EP4087024A1

公开(公告)日：2022-11-09

申请号：EP20913488.1

申请日：2020-12-29

Applicant: BYD Company Limited

Inventor： HE, Long ,  SUN, Huajun ,  ZHU, Yan ,  HU, Shichao

IPC: H01M50/10 ,  H01M50/20

Abstract: A cell, a battery pack, and an electric vehicle are provided in the present disclosure. The cell includes a hermetical metal housing and at least two hermetical accommodating cavities, multiple electrode core assemblies, and an encapsulation film arranged in the metal housing. The electrode core assemblies are arranged along a first direction. The electrode core assemblies are connected in series. A length of each electrode core assembly extends along the first direction. The electrode core assembly includes an electrode core assembly body and a first electrode and a second electrode configured to lead out a current. The first electrode and the second electrode are respectively arranged on two sides of the electrode core assembly body along the first direction. At least one of the accommodating cavities is defined by the encapsulation film, and the electrode core assembly body is arranged in the accommodating cavity. A length of the cell extends along the first direction. The length of the cell ranges from 400 mm to 2500 mm. A thickness of the cell extends along a second direction perpendicular to the first direction. A ratio of the length to the thickness of the cell ranges from 5 to 250.

公开(公告)号：EP4050689A1

公开(公告)日：2022-08-31

申请号：EP20890373.2

申请日：2020-11-19

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  LU, Zhipei ,  ZHU, Yan ,  HU, Shichao

IPC: H01M10/04

Abstract: The present disclosure provides a battery, including: a housing (10); a plurality of accommodating cavities (60) arranged in the housing; a partition plate (20) for separating two adjacent accommodating cavities (60); an electrode core assembly (30), received in one of the accommodating cavities (60), the electrode core assembly (30) including at least one electrode core, and a plurality of electrode core assemblies (30) being sequentially arranged in a first direction and connected in series; a plurality of sampling wires, electrically connected to the plurality of electrode core assemblies (30) correspondingly; and a wire harness channel, receiving the plurality of sampling wires. A battery module, a battery pack, and an electric vehicle are further provided.

公开(公告)号：EP3726618A1

公开(公告)日：2020-10-21

申请号：EP18887235.2

申请日：2018-12-13

Applicant: BYD Company Limited

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

IPC: H01M2/20

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 (110), an inner electrode terminal (109), and an outer electrode terminal (112). The inner electrode terminal (109) and the outer electrode terminal (112) are electrically connected by using a current interrupt device. The current interrupt device includes a score member (101) and a flipping member (102). The flipping member (102) is electrically connected to the score member (101). In addition, the flipping member (102) can act under an effect of air pressure to break a score (104) on the score member (101). The flipping member (102) forms an elongated structure extending along the cover plate.

公开(公告)号：EP3648193A1

公开(公告)日：2020-05-06

申请号：EP18824999.9

申请日：2018-05-28

Applicant: BYD Company Limited

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

IPC: H01M2/04 ,  H01M2/34 ,  H01M2/26 ,  H01M10/04

Abstract: A battery cover plate assembly, a single battery, a battery module, a power battery pack, and an electric vehicle are provided. The 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 at least 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. In this case, the arc extinguishing portion at least reduces the electric arc, so that gas between two disconnected structure members in the battery cover plate assembly is not easy to be broken down, thereby avoiding dangerous accidents such as battery burning and explosion and improving safety performance of the battery.

公开(公告)号：EP3477734A1

公开(公告)日：2019-05-01

申请号：EP17833515.4

申请日：2017-07-24

Applicant: BYD Company Limited

Inventor： JIANG, Luxia ,  HU, Shichao ,  YANG, Keli ,  CHENG, Han ,  ZHU, Jianhua ,  ZHU, Yan

IPC: H01M2/12

Abstract: The present disclosure provides a compound explosion-proof valve mounted on a battery cover plate assembly, a cover plate assembly containing the explosion-proof valve, and a battery. The compound explosion-proof valve includes at least two layers of explosion-proof membranes and a flame-retardant structure located between the at least two layers of explosion-proof membranes. When the battery (such as internal temperature or internal pressure) is abnormal, the first layer of explosion-proof membrane is opened; under the action of the flame-retardant structure, the compound explosion-proof valve is in a local oxygen-deficient state, and it is difficult for a high-temperature combustible matter ejected from the battery to ignite under the local oxygen-deficient condition; therefore, the compound explosion-proof valve is capable of reliving pressure in time when the battery is abnormal and effectively isolating external oxygen from entering, thereby preventing occurrence of battery combustion and explosion and avoiding secondary disasters and larger abnormity.

公开(公告)号：EP3477733A1

公开(公告)日：2019-05-01

申请号：EP17833514.7

申请日：2017-07-24

Applicant: BYD Company Limited

Inventor： JIANG, Luxia ,  HU, Shichao ,  LU, Peng ,  WANG, Xinyue ,  ZHU, Jianhua ,  ZHU, Yan

IPC: H01M2/12

Abstract: The present disclosure provides an explosion-proof valve, a cover plate assembly, and a battery. The explosion-proof valve includes a base body and an explosion-proof membrane, where the explosion-proof membrane includes a welding portion at a peripheral edge and an opening portion in the middle; the opening portion of the explosion-proof membrane is provided with an explosion-proof notch; and a flexible buffer structure is further disposed between the explosion-proof notch and a welding seam between the welding portion and the base body.