# US 2021/0242549 A1 · Battery cell, battery module, battery pack, device using battery cell as power supply, and method for assembling battery cell > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242549 A1 - Document ID: US20210242549A1 - Status: Published application - Kind: A1 - Application number: 17/058,490 - Filed: 2019-11-25 - Published: 2021-08-05 - Earliest claimed: 2019-11-25 - Assignees: Contemporary Amperex Technology Co., Limited - Applicants: Contemporary Amperex Technology Co., Limited - Inventors: Yulian ZHENG; Xiaoping ZHANG; Peng WANG; Zhanyu SUN - Web page: https://patentgrep.com/patent/US20210242549A1 ## CPC - H01M 50/593: Spacers; Insulating plates - H01M 50/15: for prismatic or rectangular cells (H01M50/153 takes precedence) - H01M 50/172: Arrangements of electric connectors penetrating the casing - H01M 50/176: for prismatic or rectangular cells (H01M50/181 takes precedence) - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/474: characterised by their position inside the cells - H01M 50/477: characterised by their shape - H01M 50/48: characterised by the material - H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection - H01M 50/533: characterised by the shape of the leads or tabs - H01M 50/547: characterised by the disposition of the terminals on the cells - H01M 50/566: by welding, soldering or brazing - H01M 50/586: inside the batteries, e.g. incorrect connections of electrodes - H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence) - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/531: Electrode connections inside a battery casing - H01M 50/55: on the same side of the cell - H01M 50/557: Plate-shaped terminals - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - 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 The present disclosure relates to a battery cell to alleviate the problem of impurities falling into an electrode assembly. Wherein, the battery cell includes: an electrode assembly including a tab and a cell body, wherein the tab is connected to the cell body; a cover plate assembly including an electrode terminal and a cover plate, wherein the electrode terminal is disposed on the cover plate; a connecting sheet connected between the tab and the electrode terminal, the connecting sheet includes a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the tab, and the second connecting portion is connected to the electrode terminal; an insulating pallet disposed between the cell body and the connecting sheet; and an insulation member disposed between the insulating pallet and the second connecting portion. ## Claims ### Claim 1 A battery cell, comprising: an electrode assembly comprising a tab and a cell body, wherein the tab is connected to the cell body; a cover plate assembly comprising an electrode terminal and a cover plate, wherein the electrode terminal is disposed on the cover plate; a connecting sheet connected between the tab and the electrode terminal, the connecting sheet comprises a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the tab, and the second connecting portion is connected to the electrode terminal; an insulating pallet disposed between the cell body and the connecting sheet; and an insulation member disposed between the insulating pallet and the second connecting portion. ### Claim 2 (depends on 1) The battery cell according to claim 1, wherein the insulating pallet and the connecting sheet both abut against the insulation member. ### Claim 3 (depends on 1) The battery cell according to claim 1, wherein the insulating pallet comprises a body portion and a carrying portion connected to the body portion, wherein the body portion abuts against the cell body, the carrying portion protrudes in a direction of close to the second connecting portion relative to the body portion, and the insulation member is disposed between the carrying portion and the second connecting portion. ### Claim 4 (depends on 1) The battery cell according to claim 1, wherein the second connecting portion protrudes in a direction of close to the electrode terminal relative to the first connecting portion, and a first groove is provided on one side of the second connecting portion proximate to the electrode assembly. ### Claim 5 (depends on 4) The battery cell according to claim 4, wherein the insulation member covers an open end of the first groove. ### Claim 6 (depends on 5) The battery cell according to claim 5, wherein the insulating pallet comprises a carrying portion protruding towards the second connecting portion, and the carrying portion and the first connecting portion jointly limit the insulation member. ### Claim 7 (depends on 4) The battery cell according to claim 4, wherein the insulation member is disposed within the first groove. ### Claim 8 (depends on 7) The battery cell according to claim 7, wherein the insulating pallet comprises a carrying portion protruding towards the second connecting portion, and the carrying portion projects into the first grooved), and the carrying portion and a bottom of the first groove jointly limit the insulation member. ### Claim 9 (depends on 1) The battery cell according to claim 1, wherein the insulation member comprises foam, rubber cloth, or solid glue. ### Claim 10 (depends on 1) The battery cell according to claim 1, wherein the insulation member comprises a solid rubber strip or a colloidal object formed by gumming and curing on the insulating pallet. ### Claim 11 (depends on 10) The battery cell according to claim 10, wherein the insulating protective member comprises a colloidal object formed by gumming and curing on the insulating pallet, and a plurality of second holes are provided on an area of the insulating pallet that is in contact with the insulation member, so as to prevent overflow of glue. ### Claim 12 (depends on 3) The battery cell according to claim 3, wherein the insulating pallet further comprises an insert portion, which is connected to a side of the body portion, and is farther to the cell body than the body portion, and at least a part of the tab is located between the insert portion and the cell body. ### Claim 13 (depends on 1) A battery module comprising the battery cell according to claim 1. ### Claim 14 (depends on 13) A battery pack comprising the battery module according to claim 13. ### Claim 15 (depends on 1) A device using the battery cell according to claim 1 as a power supply. ### Claim 16 (depends on 1) A method for assembling the battery cell according to claim 1, comprising: providing a connecting sheet and an electrode assembly, and connecting a first connecting portion of the connecting sheet with a tab of the electrode assembly; providing a cover plate assembly, and connecting a second connecting portion of the connecting sheet with an electrode terminal of the cover plate assembly; providing an insulation member, and disposing the insulation member on one side of the second connecting portion; and providing an insulating pallet, so that the insulation member is disposed between the cell body and the connecting sheet.