Battery stack plate and method for manufacturing battery stack plate

Patent metadata

Field	Value
Publication number	US-12506170-B2
Application number	US-202318183701-A
Country	US
Kind code	B2
Filing date	Mar 14, 2023
Priority date	Apr 13, 2022
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

A battery stack plate including a housing is provided. The housing has a first sub housing and a second sub housing. Each of the first and second sub housings has a coupling portion coupling the first and second sub housings to each other. The coupling portion includes a protruding portion provided on a coupling plate side face on which the first sub housing and the second sub housing are coupled to each other, and a recessed portion provided on the coupling plate side face at a position shifted from the protruding portion in the up-down direction.

First claim

What is claimed is:

1 . A battery stack plate comprising:
a plate-shaped housing in which a fitting groove is provided in a side plate surface, the fitting groove being configured to fit a side edge portion of a conductive plate disposed between a plurality of stacked power storage modules, wherein the housing includes a first sub housing and a second sub housing that are obtained by dividing the housing into two in an intersecting direction intersecting with both a fitting direction and a plate thickness direction, the first sub housing and the second sub housing each have a coupling portion that couples the first sub housing and the second sub housing to each other, the coupling portion includes a protruding portion provided on a coupling plate side face on which the first sub housing and the second sub housing are coupled to each other, and a recessed portion provided on the coupling plate side face at a position shifted from the protruding portion in the plate thickness direction, and the protruding portion arranged on the second sub housing is inserted into the recessed portion arranged on the first sub housing, and the protruding portion arranged on the first sub housing is inserted into the recessed portion arranged on the second sub housing to couple the first sub housing and the second sub housing.

2 . The battery stack plate according to claim 1 , wherein
the protruding portion includes a plurality of pins disposed side by side along the fitting direction, and a flat plate portion coupling the plurality of pins.

3 . The battery stack plate according to claim 2 , wherein
the protruding portion includes first press-fit ribs that are provided on the pins at both ends in the fitting direction, that protrude outward in the fitting direction, and that are press-fitted into the recessed portion in the fitting direction, and the first press-fit ribs and the flat plate portion are provided at the same position in the plate thickness direction.

4 . The battery stack plate according to claim 2 , wherein
the protruding portion includes second press-fit ribs that protrude from both surfaces of the flat plate portion in the plate thickness direction and that are press-fitted into the recessed portion in the plate thickness direction, and the second press-fit rib is disposed at a center of the flat plate portion in the fitting direction.

5 . A battery stack plate comprising:
a plate-shaped housing in which a fitting groove is provided in a side plate surface, the fitting groove being configured to fit a side edge portion of a conductive plate disposed between a plurality of stacked power storage modules, wherein the housing includes a first sub housing and a second sub housing that are obtained by dividing the housing into two in an intersecting direction intersecting with both a fitting direction and a plate thickness direction, the first sub housing and the second sub housing each have a coupling portion that couples the first sub housing and the second sub housing to each other, the first sub housing and the second sub housing include any one of
a voltage detection housing having a terminal accommodation recessed portion that accommodates a voltage detection terminal to be conductively connected to the conductive plate, an electric wire accommodation recessed portion that accommodates an electric wire to be conductively connected to the voltage detection terminal, and a pull-out port from which the electric wire is pulled out to the outside,
a temperature detection housing having a sensor accommodation portion that accommodates a temperature sensor, and
a dummy housing in which none of the voltage detection terminal, the electric wire, and the temperature sensor is accommodated.

6 . A method for manufacturing a plate-shaped battery stack plate in which a fitting groove is provided in a side plate surface, the fitting groove being configured to fit a side edge portion of a conductive plate disposed between a plurality of stacked power storage modules, the method for manufacturing the battery stack plate comprising:
manufacturing
a voltage detection housing having a terminal accommodation recessed portion that accommodates a voltage detection terminal to be conductively connected to the conductive plate, an electric wire accommodation recessed portion that accommodates an electric wire to be conductively connected to the voltage detection terminal, and a pull-out port from which the electric wire is pulled out to the outside,
a temperature detection housing having a sensor accommodation portion that accommodates a temperature sensor, and
a dummy housing in which none of the voltage detection terminal, the electric wire, and the temperature sensor is accommodated; and
selecting two housings from the voltage detection housing, the temperature detection housing, and the dummy housing, and coupling the two selected housings in an intersecting direction intersecting with both a fitting direction and a plate thickness direction.

Assignees

• Yazaki Corp
• Toyota Motor Co Ltd
• Toyota Jidoshokki Kk

Inventors

• Morioka Satoshi
• Okumura Motoyoshi
• Ueda Hiromi
• Morisaku Naoto
• Hasegawa Hirotaka
• Yanagihara Shinichi

Classifications

• H01M50/503

  characterised by the shape of the interconnectors · CPC title

• H01M50/289

  characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471) · CPC title

• H01M50/291

  characterised by their shape · CPC title

• H01M50/569

  Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) · CPC title

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title