# US 2026/0100484 A1 · Interconnection structure between stacks and protector

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- Number: US 2026/0100484 A1
- Document ID: US20260100484A1
- Status: Published application
- Kind: A1
- Application number: 19/352,026
- Filed: 2025-10-07
- Published: 2026-04-09
- Earliest claimed: 2024-10-08
- Assignees: Yazaki Corporation
- Applicants: Yazaki Corporation
- Inventors: Masayuki KATAOKA; Kozo KOSHO; Junya ISHIDA
- Web page: https://patentgrep.com/patent/US20260100484A1

## CPC

- H01M 50/503: characterised by the shape of the interconnectors
- H01M 50/517: by fixing means, e.g. screws, rivets or bolts
- H01M 50/526: having a layered structure
- H01M 50/588: outside the batteries, e.g. incorrect connections of terminals or busbars
- H01M 50/591: Covers
- H01M 2200/00: Safety devices for primary or secondary batteries
- 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

An interconnection structure between stacks includes a first terminal electrically connectable to the connection terminal of the first battery stack, a second terminal electrically connectable to the connection terminal of the second battery stack, a protector formed in a hollow shape, and an electric wire having one end side connected to the first terminal and another end side connected to the second terminal, the electric wire being inserted into the protector. The protector includes a hinge portion bendable in a prescribed direction, and is switchable between a first state for connecting the connection terminals to each other and a second state in which the protector is bent in the prescribed direction using the hinge portion from the first state.

## Claims

### Claim 1

An interconnection structure between stacks for electrically connecting connection terminals to each other in a state in which a second battery stack is provided on a specific direction side relative to a first battery stack in a battery pack including the first and second battery stacks in which battery cells are stacked and the connection terminals are provided on the specific direction side, the interconnection structure between stacks comprising:
a first terminal electrically connectable to the connection terminal of the first battery stack;
a second terminal electrically connectable to the connection terminal of the second battery stack;
a protector formed in a hollow shape; and
an electric wire having one end side connected to the first terminal and another end side connected to the second terminal, the electric wire being inserted into the protector,
wherein the protector includes a hinge portion bendable in a prescribed direction, and is switchable between a first state for connecting the connection terminals to each other and a second state in which the protector is bent in the prescribed direction using the hinge portion from the first state.

### Claim 2 (depends on 1)

The interconnection structure between stacks according to claim 1,
wherein the protector has a fixing structure allowing position fixing in the second state.

### Claim 3 (depends on 1)

The interconnection structure between stacks according to claim 1,
wherein the protector has a stretchable structure.

### Claim 4

A hollow protector for accommodating therein an electric wire connected to both a first terminal and a second terminal, the first terminal being electrically connectable to a connection terminal of a first battery stack and the second terminal being electrically connectable to a connection terminal of a second battery stack, battery cells being stacked and the connection terminals being provided on a specific direction side in the first and second battery stacks, the protector comprising:
a hinge portion bendable in a prescribed direction,
wherein the protector is switchable between a first state for connecting the connection terminals and a second state in which the protector is bent in the prescribed direction by the hinge portion from the first state.