公开(公告)号：US20230313347A1

公开(公告)日：2023-10-05

申请号：US18330490

申请日：2023-06-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianwei PAN ,  Shitong CHEN ,  Bin XIE ,  Fenggang ZHAO

IPC: C22C24/00

CPC classification number: C22C24/00

Abstract: A lithium strip that can be used in lithium supplementation equipment is described. The lithium strip has a first surface, and a thinned area is formed at the edge of the first surface along the width direction of the lithium strip to form a space for accommodating a release agent at the thinned area. The thinned area is designed to enable the lithium strip to pick up more release agent when it is applied to a coating device, and the release agent can remain in the above thinned area. The presence of the thinned area in the lithium strip can reduce the lithium load per unit width, so that during the calendering process of the lithium strip, there will be no calendering exceeding the preset width, so that the lithium strip will not stick to the roller after calendering.

公开(公告)号：US20230146274A1

公开(公告)日：2023-05-11

申请号：US17888497

申请日：2022-08-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yingjie GUAN ,  Yuzhen ZHAO ,  Qingyan MA ,  Yan WEN ,  Qisen HUANG ,  Fenggang ZHAO

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62

CPC classification number: H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M4/622 ,  H01M2004/027

Abstract: The present application provides a silicon carbon negative electrode material, a negative electrode sheet including the same, a secondary battery, a battery module, a battery pack and a power consumption apparatus. A battery composed of a negative electrode prepared by the silicon carbon negative electrode material in the present application as a working electrode, metal lithium as a counter electrode and an electrolyte containing a lithium ion conductive substance may be charged and discharged, and in a case of drawing a relationship graph between a differential value dQ/dV obtained by differentiating a charging and discharging capacity Q by a working electrode potential V and the working electrode potential V, when energizing the negative electrode material in a direction of delithiation, a ratio of a maximum Y of dQ/dV between 400-480 mV to a maximum X of dQ/dV between 200-255 mV may be in a range of 3.5 to 15.

公开(公告)号：US20210036285A1

公开(公告)日：2021-02-04

申请号：US16722251

申请日：2019-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Siying HUANG ,  Shiyao ZHANG ,  Quankun LI ,  Jinmei XU ,  Fenggang ZHAO ,  Xuehui WANG

IPC: H01M2/12 ,  H01M2/34

Abstract: Provided are a battery module, a secondary battery and a cap plate assembly. The battery module includes a plurality of secondary batteries arranged in sequence. The secondary battery includes an electrode assembly, a case and a cap plate assembly. The electrode assembly is received in the case and the cap plate assembly is connected to the case. The cap plate assembly includes a cap plate, an explosion-proof sheet and a fixing piece. The cap plate is disposed with a through hole, the explosion-proof sheet is disposed at the cap plate and seals the through hole, and the explosion-proof sheet has a weak region. The fixing piece connects the cap plate and the explosion-proof sheet. The fixing piece has a lower melting point than the cap plate and the explosion-proof sheet.

公开(公告)号：US20230411670A1

公开(公告)日：2023-12-21

申请号：US18239127

申请日：2023-08-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bin XIE ,  Shitong CHEN ,  Yi LU ,  Yuanyuan SHEN ,  Keqiang LI ,  Fenggang ZHAO

IPC: H01M10/04

CPC classification number: H01M10/0409

Abstract: The present application provides a pole piece forming apparatus, which may include an incoming structure, a slitter, a plurality of winders and a wrinkle remover. The incoming structure may provide a master pole piece. The slitter may slit the master pole piece into a plurality of pole pieces. The winders may pull the transport of the pole pieces, respective winding devices may wind one corresponding pole piece, and the slitter may be disposed between the incoming structure and the winders. The wrinkle remover may be arranged between the slitter and the winders. The wrinkle remover may include a first roller and a second roller that may be provided opposite to each other, the first roller may include a first rolling part, and the first rolling part and the second roller may be used for rolling an edge of a slitting edge of the pole piece.

公开(公告)号：US20230352648A1

公开(公告)日：2023-11-02

申请号：US18220301

申请日：2023-07-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinlu FEI ,  Bin XIE ,  Fenggang ZHAO ,  Shitong CHEN ,  Yongqiang XU ,  Tao FENG ,  Keqiang LI

IPC: H01M4/38 ,  H01M4/04

CPC classification number: H01M4/0435 ,  H01M4/382

Abstract: A prelithiation device may comprise: a bonding structure comprising a first roller, a second roller and a third roller, which may be sequentially disposed adjacent to each other, the first roller and the second roller being used to roll the lithium ribbon, the rolled lithium ribbon adhering to the second roller, and the second roller and the third roller being used to bond the lithium ribbon adhering to the second roller to the substrate, the lithium ribbon comprising two first surfaces opposite each other in a width direction of the lithium ribbon and a second surface facing the second roller; and a coater disposed upstream of the bonding structure in a running direction of the lithium ribbon and configured to simultaneously coat the second surface and at least one of the first surfaces with a release agent.

公开(公告)号：US20220069284A1

公开(公告)日：2022-03-03

申请号：US17416026

申请日：2019-02-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Longfei YANG ,  Guobao WANG ,  Xiaomei LIU ,  Jiang LIU ,  Yongshou LIN ,  Fenggang ZHAO

IPC: H01M4/134 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/587 ,  H01M4/36 ,  H01M4/38

Abstract: An electrode assembly and a lithium-ion battery are described. The electrode assembly includes a positive electrode plate, a separator, and a negative electrode plate, where the negative electrode plate includes a negative electrode current collector and a negative electrode active substance layer, the negative electrode plate further includes a lithium metal layer, the lithium metal layer is formed by a plurality of regular or irregular strip-shaped lithium-rich regions, and the plurality of lithium-rich regions present a discontinuous pattern of spaced distribution in a length direction of the negative electrode plate. The electrode assembly further satisfies that: negative electrode capacity per unit area/positive electrode capacity per unit area=1.2 to 2.1 and negative electrode capacity per unit area/(positive electrode capacity per unit area+capacity of the lithium metal layer on the surface of the negative electrode active substance layer per unit area×80%)≥1.10.

公开(公告)号：US20220013755A1

公开(公告)日：2022-01-13

申请号：US17113025

申请日：2020-12-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaobo CHEN ,  Fenggang ZHAO ,  Yao LI ,  Peng WANG ,  Zhanyu SUN ,  Yongshou LIN

IPC: H01M2/10 ,  H01M2/20 ,  H01M2/12 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6554

Abstract: Embodiments of the present application provide a case of a battery, a battery, a power consumption device, and a method and device for preparing a battery. The case includes: an electrical chamber configured to accommodate a plurality of battery cells and a bus component, where at least one battery cell of the plurality of battery cells includes a pressure relief mechanism; a thermal management component configured to accommodate a fluid to adjust temperatures of the plurality of battery cells; and a collection chamber configured to collect, when the pressure relief mechanism is actuated, emissions from the battery cell provided with the pressure relief mechanism; where the thermal management component is configured to isolate the electrical chamber from the collection chamber. According to the technical solutions of the embodiments of the present application, the safety of the battery can be enhanced.

公开(公告)号：US20210320359A1

公开(公告)日：2021-10-14

申请号：US17356653

申请日：2021-06-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kaijie YOU ,  Xingdi CHEN ,  Yanhuo XIANG ,  Fenggang ZHAO ,  Linggang ZHOU ,  Peng WANG

IPC: H01M50/209 ,  H01M50/543

Abstract: The present application is provided with a battery pack, including a first battery module, a second battery module and a box body, where the first battery module and the second battery module are housed in the box body; the box body including a lower box body configured to support the first battery module and the second battery module, and an upper box body fitting with the lower box body. The lower box body includes a first connecting portion, and the first connecting portion is located between the first battery module and the second battery module. The upper box body includes a second connecting portion, where the first connecting portion and the second connecting portion are fixed and connected. In the battery pack of the present application, the problem of downward deflection of the lower box body is avoided and the strength of the battery pack is improved.

公开(公告)号：US20210111455A1

公开(公告)日：2021-04-15

申请号：US17129559

申请日：2020-12-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Fenggang ZHAO ,  Xingdi CHEN ,  Lei WANG ,  Linggang ZHOU ,  Peng WANG

IPC: H01M50/20 ,  B65D21/02

Abstract: The present disclosure provides a battery box and a vehicle, the battery box comprises an upper box body, a lower box body, a connecting member, a fixing member. The upper box body comprises a first eave portion, the lower box body comprises a second eave portion. The first eave portion is provided with a first connecting hole, the second eave portion is provided with a second connecting hole and a mounting hole. The connecting member passes through the first connecting hole and the second connecting hole to connect the upper box body and the lower box body. The fixing member passes through the mounting hole to make the lower box body mounted to external equipment, compared with the conventional battery box, the lower box body is equivalent to the arrangement of eliminating the third eave portion, it simplifies the structure and reduces the weight, thereby improving the energy density.

公开(公告)号：US20200161638A1

公开(公告)日：2020-05-21

申请号：US16422860

申请日：2019-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fenggang ZHAO ,  Yongshou LIN ,  Zhenhua LI ,  Haizu JIN ,  Xiaowen ZHANG

IPC: H01M4/36 ,  H01M4/62

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein the underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.