# US 2026/0100486 A1 · Metal member, and electrode terminal and power storage module including metal member

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- Number: US 2026/0100486 A1
- Document ID: US20260100486A1
- Status: Published application
- Kind: A1
- Application number: 19/348,790
- Filed: 2025-10-03
- Published: 2026-04-09
- Earliest claimed: 2024-10-09
- Assignees: Prime Planet Energy & Solutions, Inc.
- Applicants: Prime Planet Energy & Solutions, Inc.
- Inventors: Shota TAKEBE
- Web page: https://patentgrep.com/patent/US20260100486A1

## CPC

- H01M 50/516: by welding, soldering or brazing
- H01M 50/562: characterised by the material
- H01M 50/566: by welding, soldering or brazing
- 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 is a technology for reducing the risk of molten metal splattering when welding a metal member including a first member made of metal and a second member made of metal, which are laid on top of each other, to another metal member. The metal member disclosed herein includes the first member made of metal and the second member made of metal. The second member has a space, in which gas can accumulate, between the first member and the second member. The second member has a ventilation hole that communicates the space with outside air.

## Claims

### Claim 1

A metal member comprising:
a first member made of metal; and
a second member made of metal, the second member laid on top of the first member, wherein the second member has:
a space, in which gas can accumulate, between the first member and the second member; and
a ventilation hole that communicates the space with outside air.

### Claim 2 (depends on 1)

The metal member according to claim 1, wherein
the second member includes a first face in which a non-through hole recess is formed,
a portion of the first member is accommodated in the recess, and
the space is generated between an inner wall of the recess and the portion of the first member accommodated in the recess.

### Claim 3 (depends on 1)

The metal member according to claim 1, wherein
a metal constituting the first member and a metal constituting the second member are different.

### Claim 4 (depends on 1)

The metal member according to claim 1,
further comprising a third member made of metal, wherein
the third member is configured to be placed on a surface of the second member and be welded to the second member.

### Claim 5 (depends on 4)

The metal member according to claim 4, wherein the second member and the third member are welded together in a periphery of the ventilation hole.

### Claim 6 (depends on 4)

The metal member according to claim 4, wherein
the third member has a through hole, and
the ventilation hole of the second member and the through hole of the third member are in communication with each other.

### Claim 7 (depends on 1)

An electrode terminal for use in a power storage device, the electrode terminal comprising the metal member according to claim 1.

### Claim 8 (depends on 4)

A power storage module including an electrode terminal and a busbar, the power storage module comprising:
the metal member according to claim 4, wherein
the electrode terminal includes the first member and the second member,
the busbar includes the third member.