IP Library › Granted Patent US 12,027,671
Granted Patent B2
US 12,027,671 · App. 17/026,537 · Granted Jul 2, 2024

Laminated battery and production method thereof

Inventors: Masato Ono (Nagoya, JP); Kazuhito Kato (Nagoya, JP)
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
H01M10/0585
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Quick Facts
Patent No.
US 12,027,671
App. No.
17/026,537
Granted
Jul 2, 2024
Kind
B2
Abstract

Provided is a laminated battery superior in current collection properties. A laminated battery disclosed herein includes a plurality of power generation elements. Each of the power generation elements includes a first electrode layer, a second electrode layer, and a solid electrolyte layer interposed between the first electrode layer and the second electrode layer. The laminated battery includes a first collector. The plurality of power generation elements are laid up via the first collector. A dimension of a main surface of the first collector in at least one direction is smaller than a dimension of a main surface of the first electrode layer in the same direction. An insulating adhesive is disposed at a position straddling an edge of the first collector, such that the insulating adhesive bonds a main surface of one of the power generation elements and a main surface of a power generation element adjacent thereto.

Claims (7)

1. A laminated battery comprising a plurality of power generation elements, wherein each of the power generation elements includes a first electrode layer, a second electrode layer, and an electrolyte layer interposed between the first electrode layer and the second electrode layer, the laminated battery includes a first collector, the plurality of power generation elements are laid up via the first collector, a dimension of a main surface of the first collector in at least one direction is smaller than a dimension of a main surface of the first electrode layer in the same direction, and an insulating adhesive is disposed at a position straddling an edge of the first collector, such that the insulating adhesive bonds a main surface of one of the power generation elements and a main surface of a power generation element adjacent thereto; wherein the main surface of the first collector is a surface of the first collector with the largest surface area, wherein the insulating adhesive is disposed at a position other than on the main surface of the first collector, and wherein the direction of the main surface of the first collector is perpendicular to a stacking direction of the laminated battery.

2. The laminated battery of claim 1 , wherein a dimension of the insulating adhesive is larger than a dimension of the first collector, in a stacking direction of the power generation elements.

3. The laminated battery of claim 1 , wherein the insulating adhesive has voids in an interior thereof.

4. A method for producing a laminated battery, the method comprising the steps of: preparing a plurality of power generation elements each including a first electrode layer, a second electrode layer, and a solid electrolyte layer interposed between the first electrode layer and the second electrode layer; arranging a first collector and an insulating adhesive on the first electrode layer of one power generation element of the power generation elements; and arranging another power generation element of the power generation elements on the first collector, wherein the insulating adhesive is disposed at a position other than on a main surface of the first collector with a dimension of the insulating adhesive being larger than a dimension of the first collector, in a stacking direction of the power generation elements, and wherein the direction of the main surface of the first collector is perpendicular to a stacking direction of the laminated battery.

5. The method for producing a laminated battery of claim 4 , further comprising the step of: applying pressure on the insulating adhesive by applying pressure to a main surface of the power generation elements towards an outward direction from an inward position of the main surface.

6. A laminate battery comprising: a plurality of power generation elements; wherein each of the power generation elements includes a first electrode layer, a second electrode layer, and a solid electrolyte layer interposed between the first electrode layer and the second electrode layer; wherein the first electrode layer comprises an electrode active material layer and a functional layer; wherein the laminated battery includes a first collector; when the first electrode layer is a positive electrode layer, the first collector is a positive electrode collector, and when the first electrode layer is a negative electrode layer, the first collector is a negative electrode collector, the plurality of power generation elements are laid up via the first collector, a main surface denotes a surface with the largest area, a dimension of a main surface of the first collector in at least one direction is smaller than a dimension of a main surface of the first electrode layer in the same direction, and an insulating adhesive is disposed at a position straddling an edge of the first collector, such that the insulating adhesive bonds a main surface of one of the power generation elements and a main surface of a power generation element adjacent thereto, wherein the insulating adhesive is disposed at a position other than on the main surface of the first collector, and wherein the direction of the main surface of the first collector is perpendicular to a stacking direction of the laminated battery.

7. A laminated battery comprising a plurality of power generation elements, wherein each of the power generation elements includes a first electrode layer, a second electrode layer, and a solid electrolyte layer interposed between the first electrode layer and the second electrode layer, the laminated battery includes a first collector and a second collector, the plurality of power generation elements are laid up via the first collector, a main surface denotes a surface with the largest area, a dimension of a main surface of the first collector in at least one direction is smaller than a dimension of a main surface of the second collector layer in the same direction, and an insulating adhesive is disposed at a position straddling an edge of the first collector, such that the insulating adhesive bonds a main surface of one of the power generation elements and a main surface of a power generation element adjacent thereto, wherein the insulating adhesive is disposed at a position other than on the main surface of the first collector, and wherein the direction of the main surface of the first collector is perpendicular to a stacking direction of the laminated battery.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 21, 2020
From: ONO, MASATO; KATO, KAZUHITO
To: TOYOTA JIDOSHA KABUSHIKI KAISHA
Reel/Frame 053829/0775 →
Priority Claims (1)
JP 2019-182298 · Oct 2, 2019 · national
Continuity (1)
Related Publication 20210104778A1 · Apr 8, 2021