Battery

Patent metadata

Field	Value
Publication number	US-2024332543-A1
Application number	US-202418410180-A
Country	US
Kind code	A1
Filing date	Jan 11, 2024
Priority date	Mar 30, 2023
Publication date	Oct 3, 2024
Grant date	—

Abstract

The battery includes a laminate including a battery cell and intermediate members disposed on both sides of the battery cell in the thickness direction. The battery cell includes an electrode lamination portion in which a plurality of electrodes is laminated in the thickness direction, and a seal portion disposed covering an outer edge of the electrode lamination portion. The intermediate members include a current collector plate portion and an elastic body portion. When the battery is viewed in plan from the thickness direction, the area of the current collector plate portion is smaller than the area of the battery cell, the current collector plate portion has a notch, and the elastic body portion is disposed in the notch, and the elastic body portion overlaps with the seal portion.

First claim

What is claimed is:

1 . A battery including a laminate, the battery comprising:
a battery cell; and intermediate members disposed on each of both faces of the battery cell in a thickness direction, wherein: the battery cell includes an electrode lamination portion in which a plurality of electrodes is laminated in the thickness direction, and a seal portion disposed covering an outer edge of the electrode lamination portion; the intermediate members include a current collector plate portion and an elastic body portion; in plan view of the battery from the thickness direction, an area of the current collector plate portion is smaller than an area of the battery cell; the current collector plate portion includes a notched portion; the elastic body portion is disposed in the notched portion; and the elastic body portion overlaps the seal portion.

2 . The battery according to claim 1 , wherein, with an intermediate member located at a first end of the battery that is a lower side in a gravitational direction, as a first intermediate member, and an intermediate member located at a second end of the battery that is an upper side in the gravitational direction, as a second intermediate member, rigidity of the elastic body portion in the first intermediate member is greater than rigidity of the elastic body portion in the second intermediate member.

3 . The battery according to claim 1 , wherein the battery includes a plurality of the laminates stacked in the thickness direction.

4 . A battery including a laminate, the battery comprising:
a battery cell; and intermediate members disposed on each of both faces of the battery cell in a thickness direction, wherein: the battery cell includes an electrode lamination portion in which a plurality of electrodes is laminated in the thickness direction, and a seal portion disposed covering an outer edge of the electrode lamination portion; the intermediate members include a current collector plate portion and an elastic body portion; in plan view of the battery from the thickness direction, an area of the current collector plate portion is smaller than an area of the battery cell; the elastic body portion is disposed outside of an outer edge of the current collector plate portion; and the elastic body portion overlaps the seal portion.

5 . The battery according to claim 4 , wherein the elastic body portion is disposed outside an entire periphery of the outer edge of the current collector plate portion.

6 . The battery according to claim 4 , wherein, with an intermediate member located at a first end of the battery that is a lower side in a gravitational direction, as a first intermediate member, and an intermediate member located at a second end of the battery that is an upper side in the gravitational direction, as a second intermediate member, rigidity of the elastic body portion in the first intermediate member is greater than rigidity of the elastic body portion in the second intermediate member.

7 . The battery according to claim 4 , wherein the battery includes a plurality of the laminates stacked in the thickness direction.

Assignees

• Toyota Motor Co Ltd

Inventors

• Takahashi Yuya

Classifications

• H01M50/531

  Electrode connections inside a battery casing · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• H01M10/02

  Details (of electrodes H01M4/00; of non-active parts H01M50/00) · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title