公开(公告)号：US20240372234A1

公开(公告)日：2024-11-07

申请号：US18774945

申请日：2024-07-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin Zhou ,  Yade Zhu ,  Quankun Li ,  Peng Wang

IPC: H01M50/636 ,  B60L50/64 ,  H01M50/103 ,  H01M50/15 ,  H01M50/342

Abstract: Provided are an end cover assembly, a battery unit, a battery, and an electricity consuming apparatus. The end cover assembly includes an end cover, a pressure relief mechanism, and a protective sheet. The end cover includes a main body part and a protruding part which protrudes from the main body part along the thickness direction of the end cover. The end cover is provided with a through hole which passes through the main body part and the protruding part. The pressure relief mechanism is disposed on a side of the main body part away from the protruding part and covers the through hole. The protective sheet is attached to a surface of the protruding part away from the main body part and covers the through hole. The protruding part includes a first convex part and a second convex part.

公开(公告)号：US20240372233A1

公开(公告)日：2024-11-07

申请号：US18773332

申请日：2024-07-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Caisheng LIU

IPC: H01M50/636 ,  H01M50/159 ,  H01M50/375 ,  H01M50/392

Abstract: A cap assembly, a battery cell, a battery and an electric-powered device are disclosed. The cap assembly includes: a cap plate, including a liquid injection hole; and a blocking device, disposed on a side of the cap plate facing an electrode assembly of a battery cell and at least partially covering the liquid injection hole, the blocking device including a vent hole, the vent hole being adapted for communicating the liquid injection hole with a space located at a side of the blocking device facing away from the cap plate. By providing the blocking device below the liquid injection hole, the electrolyte can be blocked and prevented from directly flowing out through the liquid injection hole during formation process. When injecting electrolyte through the liquid injection hole, the injected liquid can be prevented from directly spraying onto the electrode assembly and thus causing displacement or deformation of the electrode assembly.

公开(公告)号：US20240372201A1

公开(公告)日：2024-11-07

申请号：US18773604

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingdi Chen ,  Peng Wang ,  Zhanyu Sun

IPC: H01M50/249 ,  B60L50/60 ,  H01M50/209 ,  H01M50/242 ,  H01M50/264 ,  H01M50/271 ,  H01M50/55

Abstract: The present application relates to a battery pack and an electrical apparatus, including a box body and a battery cell. The box body encloses to form an accommodating cavity, the box body includes a carrier located at its top and used for defining the accommodating cavity, and the battery cell is accommodated in the accommodating cavity. A carrying surface of the carrier facing the accommodating cavity is constructed as a plane, and the battery cell is arranged on the carrying surface.

公开(公告)号：US20240372172A1

公开(公告)日：2024-11-07

申请号：US18771960

申请日：2024-07-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guize CHEN ,  Yongguang WANG ,  Junting LI ,  Zonghui CHEN ,  Kaiqin YU ,  Yongqiang SU

IPC: H01M10/6557 ,  H01M10/613 ,  H01M50/242 ,  H01M50/289

Abstract: This application relates to a battery and an electric device. The battery includes: at least two battery cells arranged along a preset direction; and at least one separation member disposed between two adjacent battery cells in the preset direction and configured to separate the two adjacent battery cells, where a first cooling channel is formed between the separation member and at least one battery cell adjacent thereto, the separation member includes a first surface and a second surface disposed adjacent to each other, an inlet of the first cooling channel is located at the first surface, and an outlet of the first cooling channel is located at the second surface. The battery has high safety.

公开(公告)号：US20240372153A1

公开(公告)日：2024-11-07

申请号：US18774373

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhisheng CHAI ,  Hu XU ,  Hui GU

IPC: H01M10/0587 ,  H01M50/249 ,  H01M50/536 ,  H01M50/538 ,  H01M50/593

Abstract: An electrode assembly includes a body portion, including positive and negative electrode plates and a separator plate wound into a winding structure along a winding direction; multiple positive electrode tabs separately connected to at least two positive electrode plate winding layers and spaced apart along the winding direction; and multiple negative electrode tabs separately connected to at least two negative electrode plate winding layers and spaced apart along the winding direction. The multiple positive electrode tabs and the multiple negative electrode tabs are located at a same end portion of the body portion in a direction perpendicular to the winding direction, and a length of the positive electrode tabs connected to the respective positive electrode plate winding layers in the winding direction and a length of the negative electrode tabs connected to the respective negative electrode plate winding layers in the winding direction both increase along the winding direction.

公开(公告)号：US20240372145A1

公开(公告)日：2024-11-07

申请号：US18773617

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huiling Chen ,  Zeli Wu ,  Changlong Han ,  Jie Guo ,  Lei Huang ,  Cuiping Zhang ,  Wenhao Liu

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0569

Abstract: The present application provides a secondary battery, a battery module, a battery pack, and an electrical device. The secondary battery includes a positive electrode plate, a negative electrode plate comprising a negative electrode active material; and an electrolytic solution including a first additive and a carbonate solvent, and the first additive including a boron-containing lithium salt and an ester additive, which are configured to form a solid electrolyte interface film on the surface of the negative electrode active material, wherein a discharge capacity of the secondary battery is denoted as B1 in Ah, a change in amount of gas production of the secondary battery is denoted as B2 in mL, a mass of the electrolytic solution is denoted as C in g, a reduction potential of the first additive relative to lithium metal is denoted as D.

公开(公告)号：US20240372110A1

公开(公告)日：2024-11-07

申请号：US18773630

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yujie CHEN ,  Xiaoming GE ,  Yulei FAN

IPC: H01M4/80 ,  H01M4/02 ,  H01M4/62

Abstract: This application discloses an electrode plate, an electrode assembly, a battery cell, a battery, an electrical device, and an electrode plate manufacturing method and equipment. The electrode plate includes a foamed metal layer. A part of the foamed metal layer is a filled region. Pores of the filled region are filled with a filler. The filler extends continuously from one edge to another edge of the foamed metal layer, the two edges being arranged on two opposite sides along a first preset direction. The first preset direction is perpendicular to a thickness direction of the foamed metal layer. In the electrode plate disclosed in this application, a part of the foamed metal layer is configured as a filling region filled with a filler.

公开(公告)号：US20240372067A1

公开(公告)日：2024-11-07

申请号：US18773844

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Xiaobin DONG ,  Ming ZHANG

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/587 ,  H01M4/62 ,  H01M10/054

Abstract: The present application provides a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The negative electrode plate includes: a negative electrode current collector; and a negative electrode film layer which is located on at least one surface of the negative electrode current collector and includes first negative electrode active material particles and second negative electrode active material particles, the first negative electrode active material particles including a plurality of adsorption holes and having a tap density of 0.4 g/cm3-1.4 g/cm3, wherein a difference d in median particle size between the first negative electrode active material particles and the second negative electrode active material particles satisfies: 3 μm≤d≤19 μm, and a compaction density PD of the negative electrode film layer satisfies: 0.8 g/cm3≤PD≤1.4 g/cm3.

公开(公告)号：US20240367195A1

公开(公告)日：2024-11-07

申请号：US18778692

申请日：2024-07-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei LU ,  Changyuan HU ,  Zheng WANG ,  Shisong LI ,  Shengwu ZHANG

IPC: B05C11/10 ,  B05C5/02 ,  B05C21/00 ,  H01M4/04

Abstract: An extrusion coating apparatus includes a housing having an inner chamber, a housing wall of the housing having a feed port and a coating outlet both communicated with the inner chamber, the coating outlet being in a slit shape; and further includes a porous structure disposed in the inner chamber and located on a material flow path between the feed port and the coating outlet, so that at least a portion of a material passes through the porous structure.

公开(公告)号：US20240363980A1

公开(公告)日：2024-10-31

申请号：US18764987

申请日：2024-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Xing LI ,  Jiao DONG ,  Shaojun NIU

IPC: H01M50/536 ,  H01M10/04 ,  H01M50/103 ,  H01M50/538

CPC classification number: H01M50/536 ,  H01M10/0431 ,  H01M50/103 ,  H01M50/538

Abstract: A battery cell includes: a housing; at least one wound cell arranged in the housing, where each wound cell has a tab, and the tab at at least one end forms a flattened plane covering an end surface of the wound cell; a pole; and an adapting member connecting the pole to the tab of the at least one wound cell. In the battery cell, the tab at at least one end on the wound cell forms the flattened plane covering the end surface of the wound cell, which can reduce the battery space occupied by the tab, and increase the winding space, thereby improving the energy density of the battery cell. The flattened plane can be stably connected to the adapting member, overcoming the need to align a plurality of tabs for a stable connection to the adapting plate. This improves production line efficiency and reduces battery production costs.