公开(公告)号：US11662036B2

公开(公告)日：2023-05-30

申请号：US17854687

申请日：2022-06-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fan Zhang ,  Lei Chen ,  Heyuan Li ,  Langchao Hu

IPC: F16K17/196 ,  H01M50/204 ,  H01M50/325

CPC classification number: F16K17/196 ,  H01M50/204 ,  H01M50/325 ,  H01M2200/20

Abstract: Provided in the embodiments of the application are a bidirectional pressure relief valve, a battery and an electric device. The bidirectional pressure relief valve includes a valve seat, a first valve element and a second valve element, where the valve seat has a first end and a second end opposite each other, a channel and a partition plate, the channel penetrating the first end and the second end, a first pressure relief hole being provided on the partition plate, and the partition plate being arranged on an inner wall of the channel, and dividing the channel into a first cavity and a second cavity in an axial direction of the channel. The bidirectional pressure relief valve of the application can be applied to the battery to maintain balance between internal pressure and external pressure of the battery.

公开(公告)号：US11811075B2

公开(公告)日：2023-11-07

申请号：US17354875

申请日：2021-06-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei Chen ,  Shoujiang Xu

IPC: H01M50/103 ,  H01M50/586

CPC classification number: H01M50/103 ,  H01M50/586

Abstract: The present invention provides a secondary battery, including an electrode assembly, a housing, a top cover assembly, and an insulating member. The electrode assembly includes two first surfaces and two second surfaces, and the two first surfaces are located respectively at two ends of the electrode assembly in the thickness direction. The second surfaces are extended from the ends of the first surfaces along a width direction, and intersecting lines are formed between the first surfaces and the second surfaces. The housing has an opening and forms an accommodating cavity. The electrode assembly is located inside the accommodating cavity of the housing, and the top cover assembly is connected to the opening of the housing and seals the housing. The insulating member includes two first insulating sheets, and the two first insulating sheets are disposed respectively at two sides of the electrode assembly along the thickness direction.

公开(公告)号：US11784311B2

公开(公告)日：2023-10-10

申请号：US17544964

申请日：2021-12-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jianjun Ma ,  Rui Shen ,  Libing He ,  Lei Chen ,  Baojian Zhu

IPC: H01M4/583 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/485 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M4/583 ,  H01M4/131 ,  H01M4/133 ,  H01M4/364 ,  H01M4/366 ,  H01M4/485 ,  H01M10/052 ,  H01M2004/021

Abstract: This application discloses a secondary battery and an apparatus containing the secondary battery. The secondary battery comprises a positive electrode plate comprising a positive active material and a negative electrode plate comprising a negative active material. The negative active material comprises a first material and a second material, the first material comprises artificial graphite, and the second material comprises natural graphite. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 40≤L≤50; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 45≤L≤55.

公开(公告)号：US12018764B2

公开(公告)日：2024-06-25

申请号：US17540296

申请日：2021-12-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fan Zhang ,  Lei Chen ,  Heyuan Li ,  Langchao Hu

IPC: F16K17/196 ,  F16K15/04 ,  F16K15/06 ,  F16K17/04 ,  H01M50/308 ,  H01M50/325 ,  H01M50/333

CPC classification number: F16K17/196 ,  F16K15/063 ,  F16K17/0413 ,  H01M50/325 ,  H01M50/333 ,  F16K15/044 ,  F16K17/0406 ,  H01M50/308

Abstract: A valve, a battery and a power consumption device are disclosed, the valve includes a valve body, a barrier, a first unidirectional valve core and a second unidirectional valve core. The valve body includes a fluid channel; the barrier is disposed in the fluid channel, and separates the fluid channel into a first cavity and a second cavity, the barrier is provided with a first through hole and a second through hole communicating the first cavity and the second cavity; the first unidirectional valve core is configured to close or open the first through hole; the second unidirectional valve core is configured to close or open the second through hole, opening directions of the first unidirectional valve core and the second unidirectional valve core are opposite. The valve is compact and capable of implementing a bi-directional flow of fluid.

公开(公告)号：US20220102749A1

公开(公告)日：2022-03-31

申请号：US17547312

申请日：2021-12-10

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huasheng SU ,  Lei Chen ,  Yulian Zheng ,  Xinxiang Chen

IPC: H01M10/04 ,  H01M50/176 ,  H01M50/531 ,  H01M50/591

Abstract: The present application relates to a secondary battery, a battery module and a device. The secondary battery includes a cap plate assembly; an electrode assembly, including a main body and a tab extending from the main body; an electrode terminal, arranged at the cap plate assembly to electrically connect with the tab; a first pressing-against member, arranged between the cap plate assembly and the main body, herein an accommodating space is formed between the first pressing-against member and the electrode terminal; a second pressing-against member, arranged between the cap plate assembly and the main body; herein a part of the tab, that passes between the first pressing-against member and the second pressing-against member and extends into the accommodating space, is connected to the electrode terminal, and the first pressing-against member and the second pressing-against member press against two opposite surfaces of the tab respectively.

公开(公告)号：US11848412B2

公开(公告)日：2023-12-19

申请号：US17043149

申请日：2020-04-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mianyu Xie ,  Min Zhang ,  Lei Chen ,  Xiao Chen

IPC: H01M50/178 ,  H01M50/184 ,  H01M50/105 ,  H01M50/124 ,  H01M50/133 ,  H01M50/55 ,  H01M10/0525 ,  H01M50/553 ,  H01M50/131 ,  H01M50/103 ,  H01M50/557

CPC classification number: H01M10/0525 ,  H01M50/178 ,  H01M50/184 ,  H01M50/103 ,  H01M50/105 ,  H01M50/124 ,  H01M50/131 ,  H01M50/133 ,  H01M50/55 ,  H01M50/553 ,  H01M50/557

Abstract: Provided is a secondary battery, including: an electrode assembly, a packing bag, an electrode lead and an insulation part; the electrode assembly is housed in the packing bag having a sealing part on edge, and the electrode lead is connected to the electrode assembly and passes through the sealing part. The sealing part includes a main body area, a first step area and a first transition area which are located on same side of the electrode lead along width direction, and the main body area, first transition area and first step area are successively arranged along direction approaching the electrode lead; the insulation part is wrapped around the electrode lead, and has a first portion which is located on a side of the electrode lead close to the main body area along width direction and covered by the first step area on both sides in thickness direction.

公开(公告)号：US11837736B2

公开(公告)日：2023-12-05

申请号：US17056049

申请日：2020-07-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Lei Chen

IPC: H01M50/15 ,  H01M50/186 ,  H01M50/169 ,  H01M10/04 ,  H01M50/148

CPC classification number: H01M50/154 ,  H01M10/049 ,  H01M10/0431 ,  H01M50/169 ,  H01M50/186 ,  H01M2220/20

Abstract: The embodiments of the present disclosure provide a secondary battery, a battery module, a battery pack, a device, and a manufacturing method. The secondary battery includes: an electrode unit, including a main body portion and a first tab and a second tab extending out from the main body portion; a casing, including an accommodating cavity for accommodating the main body portion and a first opening which is in communication with the accommodating cavity; a first cover plate capping the first opening, the first cover plate including a first relief hole penetrating therethrough, the first tab passes through the first relief hole and is connected to a side of the first cover plate facing away from the accommodating cavity; and a sealing plate, which is sealingly connected to the side of the first cover plate facing away from the accommodating cavity and covers the first relief hole.

公开(公告)号：US20220102723A1

公开(公告)日：2022-03-31

申请号：US17544964

申请日：2021-12-08

Applicant: Contemporary Amperex Technology Co. Limited

Inventor： Jianjun MA ,  Rui Shen ,  Libing He ,  Lei Chen ,  Baojian Zhu

IPC: H01M4/583 ,  H01M10/052 ,  H01M4/36 ,  H01M4/485 ,  H01M4/133 ,  H01M4/131

Abstract: This application discloses a secondary battery and an apparatus containing the secondary battery. The secondary battery comprises a positive electrode plate comprising a positive active material and a negative electrode plate comprising a negative active material. The negative active material comprises a first material and a second material, the first material comprises artificial graphite, and the second material comprises natural graphite. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 40≤L≤50; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 45≤L≤55.

公开(公告)号：US12230800B2

公开(公告)日：2025-02-18

申请号：US17547280

申请日：2021-12-10

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jianjun Ma ,  Rui Shen ,  Libing He ,  Baojian Zhu ,  Lei Chen

IPC: H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/02

Abstract: This application discloses a secondary battery including a positive electrode plate and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode film disposed on a surface of the positive electrode current collector and comprising a positive active material, the negative electrode plate comprises a negative electrode current collector and a negative electrode film disposed on a surface of the negative electrode current collector and comprising a negative active material. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 6.0 mΩ≤R≤12.0 mΩ; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 3.0 mΩ≤R≤7.0 mΩ.

公开(公告)号：US20240356057A1

公开(公告)日：2024-10-24

申请号：US18757595

申请日：2024-06-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Baojian ZHU ,  Lei Chen ,  Shoujiang Xu ,  Chunyan Feng

IPC: H01M10/04 ,  H01M50/15 ,  H01M50/536 ,  H01M50/538 ,  H01M50/55

CPC classification number: H01M10/0468 ,  H01M50/15 ,  H01M50/538 ,  H01M50/536 ,  H01M50/55

Abstract: The disclosure relates to a top compression plate, a secondary battery and a method for manufacturing a secondary battery. The secondary battery includes a cap plate; an electrode terminal disposed on the cap plate; an electrode assembly which comprises a main body and a tab connected to the main body, wherein the tab is connected to the electrode terminal; an insulating member disposed between the cap plate and the main body, wherein the insulating member comprises a connecting protrusion extending toward the main body; and a top compression plate disposed between the insulating member and the main body. The top compression plate comprises a first surface facing the main body and a mounting hole mating with the connecting protrusion, and a top end surface of the connecting protrusion does not exceed the first surface.