# US 2023/0053460 A1 · Cover assembly for battery and battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0053460 A1 - Document ID: US20230053460A1 - Status: Published application - Kind: A1 - Application number: 17/887,484 - Filed: 2022-08-14 - Published: 2023-02-23 - Earliest claimed: 2021-08-17 - Assignees: Xiamen Hithium New Energy Technology Co., Ltd. - Applicants: Xiamen Hithium New Energy Technology Co., Ltd. - Inventors: Weidong XU; Qiqi HUO; Nan ZHANG; Ziqi YI; Zuyu WU - Web page: https://patentgrep.com/patent/US20230053460A1 ## CPC - H01M 50/155: characterised by the material - H01M 50/152: for cells having curved cross-section, e.g. round or elliptic (H01M50/15, H01M50/153 take precedence) - H01M 50/154: {Lid or cover comprising an axial bore for receiving a central current collector} - H01M 50/409: Separators, membranes or diaphragms characterised by the material - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Provided are a cover assembly for a battery and a battery. The cover assembly for the battery includes an elastic cover, an insulating cover, a frame support member and a terminal column assembly. The insulation cover is embedded in one end of the elastic cover. The frame support member has a greater hardness than the elastic cover and the insulating cover. The frame support member is embedded in the other end of the elastic cover. The elastic cover has an encapsulation portion disposed on an outside, in a radical direction, of the insulating cover and the frame support member. The encapsulation portion is in a cylindrical shape and configured to abut against an inner surface of a housing of the battery. The terminal assembly includes a terminal penetrating the insulating cover and the elastic cover. ## Claims ### Claim 1 A cover assembly for a battery, the cover assembly comprising: an elastic cover; an insulating cover embedded in one end of the elastic cover; a frame support member embedded in the other end of the elastic cover; and a terminal assembly, comprising a terminal penetrating the insulating cover and the elastic cover, wherein the elastic cover is engaged with at least one of the insulating cover and the terminal assembly through a recess-protrusion structure, and wherein the terminal penetrates the recess-protrusion structure. ### Claim 2 (depends on 1) The cover assembly for the battery according to claim 1, wherein the elastic cover has an encapsulation portion disposed on an outside, in a radical direction, of the insulating cover and the frame support member, the encapsulation portion being in a cylindrical shape and configured to abut against an inner surface of a housing of the battery. ### Claim 3 (depends on 1) The cover assembly for the battery according to claim 1, wherein: the insulating cover has a first boss disposed on one end surface thereof, and the elastic cover has a first recess defined on one end surface thereof, the first boss being inserted into the first recess, the terminal penetrating the first boss and the first recess. ### Claim 4 (depends on 3) The cover assembly for the battery according to claim 3, wherein: the terminal has a first positioning flange disposed at one end thereof, and the insulating cover has an installation recess defined on the other end surface thereof, the first positioning flange being located in the installation recess. ### Claim 5 (depends on 1) The cover assembly for the battery according to claim 1, wherein the terminal assembly further comprises a fixing member, and the other end of the terminal abuts against the other end surface of the elastic cover via the fixing member. ### Claim 6 (depends on 5) The cover assembly for the battery according to claim 5, wherein: the elastic cover further has a second boss disposed on the other end surface thereof, and the fixing member has a second recess defined on one end thereof, the second boss being inserted into the second recess, the terminal penetrating the second boss and the second recess. ### Claim 7 (depends on 5) The cover assembly for the battery according to claim 5, wherein: the frame support member is an annular metal plate, and the elastic cover further has an annular separation protrusion disposed on the other end surface thereof, the annular separation protrusion separating the fixing member from the annular metal plate. ### Claim 8 (depends on 7) The cover assembly for the battery according to claim 7, wherein the fixing member and the terminal protrude beyond the annular separation protrusion and the annular metal plate. ### Claim 9 (depends on 5) The cover assembly for the battery according to claim 5, wherein the terminal is a riveting terminal and has a second positioning flange disposed at the other end thereof, the second positioning flange abutting against and being inserted into the other end of the fixing member. ### Claim 10 A battery, comprising: a housing, having an opening; a jelly roll arranged in the housing; and the cover assembly mounted at the opening of the housing, the cover assembly comprising: an elastic cover; an insulating cover embedded in one end of the elastic cover; a frame support member embedded in the other end of the elastic cover; and a terminal assembly, comprising a terminal penetrating the insulating cover and the elastic cover, wherein the elastic cover is engaged with at least one of the insulating cover and the terminal assembly through a recess-protrusion structure, and wherein the terminal penetrates the recess-protrusion structure. ### Claim 11 (depends on 10) The battery according to claim 10, wherein the elastic cover has an encapsulation portion disposed on an outside, in a radical direction, of the insulating cover and the frame support member, the encapsulation portion being in a cylindrical shape and configured to abut against an inner surface of a housing of the battery. ### Claim 12 (depends on 10) The battery according to claim 10, wherein: the insulating cover has a first boss disposed on one end surface thereof, and the elastic cover has a first recess defined on one end surface thereof, the first boss being inserted into the first recess, the terminal penetrating the first boss and the first recess. ### Claim 13 (depends on 12) The battery according to claim 12, wherein: the terminal has a first positioning flange disposed at one end thereof, and the insulating cover has an installation recess defined on the other end surface thereof, the first positioning flange being located in the installation recess. ### Claim 14 (depends on 10) The battery according to claim 10, wherein the terminal assembly further comprises a fixing member, and the other end of the terminal abuts against the other end surface of the elastic cover via the fixing member. ### Claim 15 (depends on 14) The battery according to claim 14, wherein: the elastic cover further has a second boss disposed on the other end surface thereof, and the fixing member has a second recess defined on one end thereof, the second boss being inserted into the second recess, the terminal penetrating the second boss and the second recess. ### Claim 16 (depends on 14) The battery according to claim 14, wherein: the frame support member is an annular metal plate, and the elastic cover further has an annular separation protrusion disposed on the other end surface thereof, the annular separation protrusion separating the fixing member from the annular metal plate. ### Claim 17 (depends on 16) The battery according to claim 16, wherein the fixing member and the terminal protrude beyond the annular separation protrusion and the annular metal plate. ### Claim 18 (depends on 14) The battery according to claim 14, wherein the terminal is a riveting terminal and has a second positioning flange disposed at the other end thereof, the second positioning flange abutting against and being inserted into the other end of the fixing member. ### Claim 19 (depends on 10) The battery according to claim 10, wherein: the elastic cover has an encapsulation portion disposed on an outside, in a radical direction, of the insulating cover and the frame support member, the housing has a protruding structure formed at an inner surface thereof and protruding inwardly, the protruding structure pressing the encapsulation portion of the elastic cover in the radial direction, and the housing further has a folded edge at an end where the opening is located, the folded edge being bent towards an inner side of the encapsulation portion and pressing the encapsulation portion. ### Claim 20 (depends on 19) The battery according to claim 19, wherein the folded edge and the encapsulation portion pressed by the folded edge abut against an end surface of the frame support member.