Power storage module

Patent metadata

Field	Value
Publication number	US-12424699-B2
Application number	US-202017771050-A
Country	US
Kind code	B2
Filing date	Oct 20, 2020
Priority date	Nov 7, 2019
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A power storage module includes power storage elements having electrode surfaces of positive electrode surfaces and negative electrode surfaces on front and back surfaces thereof, a conductive member electrically connected to the electrode surfaces of the power storage elements, and a wiring module electrically connected to the conductive member. The power storage elements are arranged in an arrangement direction such that the electrode surfaces of the power storage elements that are adjacent to each other are opposed to each other. The electrode surfaces of the power storage elements that are adjacent to each other are electrically connected by the conductive member that is disposed between the power storage elements that are adjacent to each other. The wiring module is disposed between the power storage elements that are adjacent to each other. The conductive member and the wiring module are disposed inside an outline of the power storage elements seen from the arrangement direction.

First claim

The invention claimed is:

1. A power storage module comprising:
power storage elements having electrode surfaces of positive electrode surfaces and negative electrode surfaces on front and back surfaces thereof;
a conductive member electrically connected to the electrode surfaces of the power storage elements; and
a wiring module electrically connected to the conductive member, wherein
the power storage elements are arranged in an arrangement direction such that the electrode surfaces of the power storage elements that are adjacent to each other are opposed to each other,
the electrode surfaces of the power storage elements that are adjacent to each other are electrically connected by the conductive member that is disposed between the power storage elements that are adjacent to each other,
the wiring module is disposed between the power storage elements that are adjacent to each other,
the conductive member and the wiring module are disposed inside an outline of the power storage elements seen from the arrangement direction,
the wiring module includes a housing having insulating properties, a terminal arranged in the housing, and an electric wire connected to the terminal,
the terminal includes an elastic contact portion that is elastically deformable, the conductive member has a terminal contact surface on a side edge that is not contacted with one of the electrode surfaces,
the elastic contact portion of the terminal is to be elastically contacted with the terminal contact surface,
with the wiring module and the conductive member being coupled together, the terminal is disposed in the housing to be movable between a contact position in which the elastic contact portion is in contact with the terminal contact surface of the conductive member and a standby position in which the elastic contact portion is away from the terminal contact surface of the conductive member,
the housing includes a standby position stopper for holding the terminal in the standby position and a contact position stopper for holding the terminal in the contact position,
the housing includes a window hole in a section thereof corresponding to the terminal,
the housing further includes a terminal cover that covers the window hole and is movable between a temporary holding position and a holding position,
the terminal cover includes a first holder for holding the terminal in the standby position with the terminal cover being held in the temporary holding position and a second holder for holding the terminal in the contact position with the terminal cover being held in the holding position, and
the electrode surfaces are terminals.

2. The power storage module according to claim 1 , wherein
the conductive member has a conductive member-side contact surface that is contacted with one of the electrode surfaces,
the wiring module has a wiring module-side contact surface that is contacted with the one of the electrode surfaces, and
the conductive member-side contact surface and the wiring module-side contact surface are on a same plane.

3. The power storage module according to claim 1 , wherein
the conductive member includes a groove adjacent to the side edge including the terminal contact surface, the groove extends along the terminal contact surface, and
the wiring module includes a fitting portion to be fitted to the groove.

4. The power storage module according to claim 1 , wherein one of the housing and the terminal includes a front stopper that projects toward another one of the housing and the terminal to suppress the terminal from moving closer to the terminal contact surface further from the contact position.

5. The power storage module according to claim 1 , wherein
the terminal cover integrally includes a cover section via a hinge,
the cover section projects from the housing when the terminal cover is in the temporary holding position,
the cover section is pivoted around the hinge to close the window opening when the terminal cover is in the holding position, and
with the window hole being covered with the terminal cover and the cover section, the housing, the terminal cover, and the cover section are on a same plane.

6. The power storage module according to claim 1 , wherein
the elastic contact portion includes an elastic piece that extends along the terminal contact surface and is elastically deformable in a direction crossing the terminal contact surface and a contact portion that is at an extended end of the elastic piece and projects toward the terminal contact surface, and
the terminal cover includes a pushing portion that comes in contact with the elastic piece and push the elastic piece toward the terminal contact surface with the terminal cover being held in the holding position.

7. The power storage module according to claim 1 , wherein
the housing includes a wire groove in which the electric wire is routed, and a pair of wire stoppers projects from a bottom wall of the wire groove for holding the electric wire.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries
• Toyota Motor Co Ltd

Inventors

• Matsumura Nobuyuki
• Shimoda Hiroki
• Okumura Motoyoshi
• Kikuchi Takuro
• Morioka Satoshi
• Terashima Daiki

Classifications

• H01G11/78

  Cases; Housings; Encapsulations; Mountings · CPC title

• H01G11/22

  Electrodes · CPC title

• H01M50/588

  outside the batteries, e.g. incorrect connections of terminals or busbars · CPC title

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title

• H01M50/503 Primary

  characterised by the shape of the interconnectors · CPC title