# US 2021/0280835 A1 · Housing assembly of button cell, button cell and electronic product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280835 A1 - Document ID: US20210280835A1 - Status: Published application - Kind: A1 - Application number: 16/930,361 - Filed: 2020-07-16 - Published: 2021-09-09 - Earliest claimed: 2020-03-03 - Assignees: Zhuhai Cosmx Battery Co., Ltd. - Applicants: Zhuhai CosMX Battery Co., Ltd. - Inventors: Ning PENG; Bin XIE; Yongwang WANG - Web page: https://patentgrep.com/patent/US20210280835A1 ## CPC - H01M 50/109: of button or coin shape - H01M 50/216: adapted for button or coin cells - H01M 50/181: for button or coin cells - H01M 50/184: characterised by their shape or structure - H01M 50/186: characterised by the disposition of the sealing members - H01M 50/193: Organic material - H01M 50/538: Connection of several leads or tabs of wound or folded electrode stacks - 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 Embodiments of the present invention provide a housing assembly of button cell, a button cell and an electronic product. The housing assembly of button cell includes: a housing and a conductive part, the housing having a holding cavity that is capable of holding a cell of the button cell, the cell having a first tab and a second tab, the housing being provided with a through hole, the conductive part being positioned at and blocking the through hole, and the conductive part and the through hole being sealed and insulated; where, the number of the conductive part is one or two, and when the number of the conductive part is two, the housing is provided with two through holes, where the conductive parts correspond to the through holes one by one. It is beneficial to improving sealability of the housing assembly of button cell. ## Claims ### Claim 1 A housing assembly of button cell, comprising: a housing and a conductive part, the housing and the conductive part enclosing together to form a holding cavity for holding a cell of the button cell; wherein, the housing is provided with a through hole, and the conductive part penetrates through the through hole, and a sealing rubber ring for sealing and insulating the conductive part and an inner wall of the through hole is provided between the conductive part and the inner wall of the through hole; and the conductive part comprises a columnar part penetrated through the through hole, and an end of the columnar part facing the cell is provided with a sheet part integrally formed with the columnar part, and an end of the columnar part facing away from the cell extends outwardly with a flanging around the columnar part; and the axial direction of the columnar part is provided with a fabrication hole for welding. ### Claim 2 (depends on 1) The housing assembly of button cell according to claim 1, wherein a part of the sheet part located in the fabrication hole has a welding mark. ### Claim 3 (depends on 1) The housing assembly of button cell according to claim 1, wherein a gasket is provided between the flanging and the sealing rubber ring. ### Claim 4 (depends on 1) The housing assembly of button cell according to claim 1, wherein the cell has a first tab and a second tab; and the number of the conductive part is one, and the conductive part is configured to electrically connect with one of the first tab and the second tab, and the housing is electrically connected with the other one of the first tab and the second tab; or, the number of the conductive part is two, and the housing is provided with two through holes, wherein the conductive parts correspond to the through holes one by one, and wherein one of the two conductive parts is configured to electrically connect with the first tab, and the other one of the two conductive parts is configured to electrically connect with the second tab. ### Claim 5 (depends on 1) The housing assembly of button cell according to claim 1, wherein the housing has two oppositely disposed end surfaces, and a sidewall is located between the two end surfaces; and the conductive part is located on the end surfaces. ### Claim 6 (depends on 2) The housing assembly of button cell according to claim 2, wherein the housing has two oppositely disposed end surfaces, and a sidewall is located between the two end surfaces; and the conductive part is located on the end surfaces. ### Claim 7 (depends on 3) The housing assembly of button cell according to claim 3, wherein the housing has two oppositely disposed end surfaces, and a sidewall is located between the two end surfaces; and the conductive part is located on the end surfaces. ### Claim 8 (depends on 4) The housing assembly of button cell according to claim 4, wherein the housing has two oppositely disposed end surfaces, and a sidewall is located between the two end surfaces; and the conductive part is located on the end surfaces. ### Claim 9 (depends on 5) The housing assembly of button cell according to claim 5, wherein at least a part of at least one of the end surfaces protrudes in a direction away from the cell to form a convex surface; and the conductive part is located on the convex surface. ### Claim 10 (depends on 6) The housing assembly of button cell according to claim 6, wherein at least a part of at least one of the end surfaces protrudes in a direction away from the cell to form a convex surface; and the conductive part is located on the convex surface. ### Claim 11 (depends on 7) The housing assembly of button cell according to claim 7, wherein at least a part of at least one of the end surfaces protrudes in a direction away from the cell to form a convex surface; and the conductive part is located on the convex surface. ### Claim 12 (depends on 8) The housing assembly of button cell according to claim 8, wherein at least a part of at least one of the end surfaces protrudes in a direction away from the cell to form a convex surface; and the conductive part is located on the convex surface. ### Claim 13 (depends on 1) The housing assembly of button cell according to claim 1, wherein the housing includes a first housing and a second housing, and the first housing and the second housing are integral parts. ### Claim 14 (depends on 2) The housing assembly of button cell according to claim 2, wherein the housing includes a first housing and a second housing, and the first housing and the second housing are integral parts. ### Claim 15 (depends on 4) The housing assembly of button cell according to claim 4, wherein the housing includes a first housing and a second housing, and the first housing and the second housing are integral parts. ### Claim 16 (depends on 1) The housing assembly of button cell according to claim 1, wherein hardness of the conductive part is smaller than hardness of the housing; and/or at least a part of a housing wall of the housing has a thinning area, and thickness of the housing wall in the thinning area is smaller than thickness of other parts of the housing wall. ### Claim 17 (depends on 2) The housing assembly of button cell according to claim 2, wherein hardness of the conductive part is smaller than hardness of the housing; and/or at least a part of a housing wall of the housing has a thinning area, and thickness of the housing wall in the thinning area is smaller than thickness of other parts of the housing wall. ### Claim 18 (depends on 4) The housing assembly of button cell according to claim 4, wherein hardness of the conductive part is smaller than hardness of the housing; and/or at least a part of a housing wall of the housing has a thinning area, and thickness of the housing wall in the thinning area is smaller than thickness of other parts of the housing wall. ### Claim 19 A button cell, comprising: a cell and a housing assembly of button cell, wherein the housing assembly of button cell comprises: a housing and a conductive part, the housing and the conductive part enclosing together to form a holding cavity for holding a cell of the button cell; wherein, the housing is provided with a through hole, and the conductive part penetrates through the through hole, and a sealing rubber ring for sealing and insulating the conductive part and an inner wall of the through hole is provided between the conductive part and the inner wall of the through hole; and the conductive part comprises a columnar part penetrated through the through hole, and an end of the columnar part facing the cell is provided with a sheet part integrally formed with the columnar part, and an end of the columnar part facing away from the cell extends outwardly with a flanging around the columnar part; and the axial direction of the columnar part is provided with a fabrication hole for welding. ### Claim 20 An electronic product, comprising: a button cell, wherein the button cell comprises: a cell and a housing assembly of button cell, wherein the housing assembly of button cell comprises: a housing and a conductive part, the housing and the conductive part enclosing together to form a holding cavity for holding a cell of the button cell; wherein, the housing is provided with a through hole, and the conductive part penetrates through the through hole, and a sealing rubber ring for sealing and insulating the conductive part and an inner wall of the through hole is provided between the conductive part and the inner wall of the through hole; and the conductive part comprises a columnar part penetrated through the through hole, and an end of the columnar part facing the cell is provided with a sheet part integrally formed with the columnar part, and an end of the columnar part facing away from the cell extends outwardly with a flanging around the columnar part; and the axial direction of the columnar part is provided with a fabrication hole for welding.