# US 11,909,062 B2 · Battery pack comprising battery pack frame capable of preventing welding defect and pressing jig for preparing the same

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

- Number: US 11,909,062 B2
- Document ID: US11909062B2
- Status: Granted
- Kind: B2
- Application number: 16/759,007
- Filed: 2019-10-04
- Published: 2021-06-17
- Granted: 2024-02-20
- Earliest claimed: 2018-10-05
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Seung Ryul Baek; Jeong Pyo Kong; Jong Hwa Choi
- Web page: https://patentgrep.com/patent/US11909062B2

## CPC

- B25B 11/02: Assembly jigs
- H01M 50/289: characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471)
- B23K 37/0443: {Jigs}
- H01M 10/0404: {Machines for assembling batteries}
- H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence)
- B23K 37/0408: {for planar work}
- B23K 2101/36: Electric or electronic devices
- H01M 50/211: adapted for pouch cells
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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

A battery pack is provided including a battery module having a plurality of battery cells or a unit module having the plurality of battery cells; a battery pack frame body including a base plate on which the battery module or the unit module is mounted, and a first side plate and a second side plate connected to the base plate and disposed to face each other; a top frame coupled to an upper portion of the battery pack frame body; and a first end plate and a second end plate electrically connected to electrode terminals of the battery module or the unit module, wherein at least one of the first end plate and the second end plate is configured to include slits.

## Claims

### Claim 1

A battery pack comprising:
a battery module comprising a plurality of battery cells or comprising a unit module including the plurality of battery cells;
a battery pack frame body comprising a base plate on which the battery module or the unit module is mounted, and a first side plate and a second side plate connected to the base plate and disposed to face each other;
a top frame coupled to an upper portion of the battery pack frame body; and
a first end plate and a second end plate electrically connected to electrode terminals of the battery module or the unit module, each of the first end plate and the second end plate having an inner surface and an outer surface as opposite surfaces,
wherein at least one of the first end plate and the second end plate is configured to include slits that penetrate through the at least one of the first end plate and the second end plate between the inner surface and the outer surface thereof,
wherein some of the slits are formed at corner edge portions of the at least one of the first end plate and the second end plate, and
wherein the some of the slits are formed in a diagonal direction from the corner edges of the first end plate and the second end plate toward a center part thereof.

### Claim 2 (depends on 1)

The battery pack according to claim 1, wherein edge portions including the corner edge portions are configured to be closely coupled to the battery pack frame body and the top frame.

### Claim 3 (depends on 2)

The battery pack according to claim 2, wherein the edge portions are coupled to the battery pack frame body and the top frame by welding.

### Claim 4 (depends on 1)

The battery pack according to claim 1, wherein a length of the battery pack frame body and a length of the top frame are different from each other.

### Claim 5 (depends on 1)

The battery pack according to claim 1, further comprising at least one slit of the slits formed in a direction of the center part at an outer periphery of the at least one of the first end plate and the second end plate.

### Claim 6 (depends on 1)

The battery pack according to claim 1, wherein the inner surface and the outer surface of each of the first end plate and the second end plate are arranged perpendicular to the base plate, the first side plate, the second side plate and the top frame.