# US 12,763,436 B2 · Bus bar and power storage module

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- Number: US 12,763,436 B2
- Document ID: US12763436B2
- Status: Granted
- Kind: B2
- Application number: 18/689,730
- Filed: 2022-09-09
- Published: 2025-05-01
- Granted: 2026-10-13
- Earliest claimed: 2021-09-27
- Assignees: Autonetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.
- Applicants: Autonetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.
- Inventors: Nobuyuki Matsumura; Osamu Nakayama
- Web page: https://patentgrep.com/patent/US12763436B2

## CPC

- H01M 50/503: characterised by the shape of the interconnectors
- H01B 5/02: Single bars, rods, wires, or strips
- H01G 11/10: Multiple hybrid or EDL capacitors, e.g. arrays or modules (housings, cases, encapsulations or mountings thereof H01G11/78)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)

## Abstract

A bus bar is a plate-shaped bus bar that connects a plurality of power storage elements, and includes a plurality of connection portions connected to electrode terminals of the plurality of power storage elements, and one or more intermediate portions that couple the adjacent connection portions, the connection portions include electrode welding portions disposed so as to respectively oppose the electrode terminals and welded to the electrode terminals, the intermediate portion is provided with one or more slits, and the each slit has a shape elongated in an arrangement direction in which the connection portions are arranged side by side and has a predetermined dimension in a width direction orthogonal to both the arrangement direction and an opposing direction in which the electrode welding portions opposes the electrode terminals.

## Claims

### Claim 1

A plate-shaped bus bar that connects a plurality of power storage elements to each other, the bus bar comprising:
a plurality of connection portions to be connected to electrode terminals of the plurality of power storage elements; and
one or more intermediate portions that couple the adjacent connection portions,
wherein the connection portions include electrode welding portions that are respectively disposed so as to oppose the electrode terminals and are welded to the electrode terminals,
the intermediate portion is provided with one or more slits,
each slit has an elongated shape in an arrangement direction in which the connection portions are arranged side by side and has a predetermined dimension in a width direction orthogonal to both the arrangement direction and an opposing direction in which the electrode welding portions and the electrode terminals oppose each other,
the intermediate portion is a raised portion that protrudes from the connection portions in a direction away from the electrode terminals,
the bus bar includes a plurality of plate-shaped substrates laminated in the opposing direction,
the substrates each include a protruding portion that forms the raised portion,
a clearance is provided between the adjacent protruding portions, and
the clearance includes a first clearance extending in the opposing direction and a second clearance extending in the arrangement direction.

### Claim 2 (depends on 1)

The bus bar according to claim 1,
wherein a plurality of the slits are provided for each intermediate portion, and are arranged side by side in the width direction.

### Claim 3 (depends on 1)

The bus bar according to claim 1,
wherein the raised portion includes a ceiling portion that is parallel with the connection portions, and coupling portions that couple the ceiling portion and the connection portions, and
the coupling portions are inclined toward the connection portions from the ceiling portion in the arrangement direction from the connection portion side toward the ceiling portion side.

### Claim 4 (depends on 1)

A power storage module comprising:
a plurality of power storage elements; and
the bus bar according to claim 1 that is connected to the electrode terminals of the plurality of power storage elements.