# US 10,873,060 B2 · Battery can for a battery

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,873,060 B2
- Document ID: US10873060B2
- Status: Granted
- Kind: B2
- Application number: 16/288,332
- Filed: 2019-02-28
- Published: 2019-09-05
- Granted: 2020-12-22
- Earliest claimed: 2018-03-05
- Assignees: H&T Rechargeable LLC
- Applicants: H&T Rechargeable LLC
- Inventors: Volker Seefeldt; Florian Schröder; Patrick Hefer
- Web page: https://patentgrep.com/patent/US10873060B2

## CPC

- H01M 10/0422: {Cells or battery with cylindrical casing}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 50/107: having curved cross-section, e.g. round or elliptic (H01M50/103, H01M50/109, H01M50/11 take precedence)
- H01M 50/119: Metals
- H01M 50/167: by crimping
- H01M 50/171: using adhesives or sealing agents
- H01M 10/0431: {Cells with wound or folded electrodes (H01M10/045 takes precedence)}
- H01M 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
- H01M 50/186: characterised by the disposition of the sealing members
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- 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
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The present invention relates to a battery can, in particular for a rechargeable lithium-ion battery, configured to receive an electrode assembly formed by winding an anode and a cathode that are isolated by a separator, wherein the battery can is configured to be closed by cap assembly. The battery can comprises a cylindrical can body for containing the electrode assembly and has a first end forming a base and a peripheral side wall extending from the base in a longitudinal direction to a second end of the can body comprising an opening, wherein the side wall of the can body ends in an end edge at the second end, and wherein the side wall of the can body is adapted to be crimped inwardly at the second end of the second end to attach a cap assembly that is inserted into the can body opening to the can body. According to the invention, the end edge of the peripheral side wall is formed in an inwardly extending loop into an annular shoulder surrounding the opening. The annular shoulder is configured such that when the can body sidewall is crimped inwardly at the second end to attach a cap assembly positioned in the can body opening to the battery can, the annular shoulder is bent inwardly such that the annular shoulder faces and engages the cap assembly positioned in the second end of the can body and such that the end edge of the side wall faces the inner side wall of the can body.

## Claims

### Claim 1

Battery, comprising a battery can comprising a cylindrical can body, an electrode assembly accommodated in the cylindrical can body and formed by winding an anode and a cathode that are isolated by a separator,
wherein the can body has a first end forming a base, and a peripheral side wall extending from the base in a longitudinal direction to a second end of the can body comprising an opening, wherein the second end is closed by a cap assembly inserted into the can body opening to the can body, wherein the cap assembly has been attached to the can body by crimping an annular shoulder surrounding the opening inwardly such that the annular shoulder is in engagement with an upper section of the cap assembly, wherein:
the side wall of the can body ends in an end edge at the second end and the end edge of the peripheral side wall is folded in an inwardly extending loop into the annular shoulder; and inner opposing side wall surfaces of the inner annular shoulder abut each other and the end edge contacts the inner side wall of the can body,
the annular shoulder has been crimped inwardly such that the end edge of the side wall is bent away from the longitudinal axis of the can body and faces the inner side wall of the can body and an end face of the side wall at the second end forms an outer flat annular surface when viewed in the longitudinal direction of the can body; and
a section of the side wall has been crimped inwardly and forms an annular projection that engages a lower section of the cap assembly.

### Claim 2 (depends on 1)

Battery according to claim 1, wherein the cap assembly comprises a positive current output terminal and the annular shoulder comprises a negative current output terminal, or vice versa.

### Claim 3 (depends on 1)

The battery according to claim 1, wherein the battery is a lithium-ion battery.