Solid-state battery

Patent metadata

Field	Value
Publication number	US-11804618-B2
Application number	US-202117457899-A
Country	US
Kind code	B2
Filing date	Dec 6, 2021
Priority date	Dec 8, 2020
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

To provide a solid-state battery in which the capacity and voltage can be optionally adjusted in a single battery and the installation space for the battery can be reduced.A solid-state battery includes a plurality of electrode layers, and a solid electrolyte layer disposed between the electrode layers. The electrode layers includes positive electrode portion formed by filling a current collector including a metal porous body with a positive electrode material mixture, negative electrode portion formed by filling a current collector including a metal porous body with a negative electrode material mixture, and an isolation portion formed between the positive electrode portion and the negative electrode portion. Between the plurality of electrode layers disposed adjacent to each other, the positive electrode portion and the negative electrode portion are disposed so as to face each other, and the isolation portions are disposed so as to face each other.

First claim

What is claimed is:

1. A solid-state battery, comprising:
a plurality of electrode layers; and
a solid electrolyte layer disposed between the electrode layers,
the electrode layers comprising a first electrode layer and a second electrode layer,
the first electrode layer comprising:
a positive electrode portion formed by filling a current collector comprising a metal porous body with a positive electrode material mixture;
a negative electrode portion formed by filling a current collector comprising a metal porous body with a negative electrode material mixture; and
an electroconductive isolation portion formed between the positive electrode portion and the negative electrode portion, the electroconductive isolation portion having electric conductivity and no ionic conductivity,
the second electrode layer comprising:
a positive electrode portion formed by filling a current collector comprising a metal porous body with a positive electrode material mixture;
a negative electrode portion formed by filling a current collector comprising a metal porous body with a negative electrode material mixture, and
an insulating isolation portion formed between the positive electrode portion and the negative electrode portion, the insulating isolation portion having no electric conductivity and no ionic conductivity,
the first electrode layer and the second electrode layer being disposed such that the positive electrode portion and the negative electrode portion face each other.

2. The solid-state battery according to claim 1 , wherein the electroconductive isolation portion is formed by filling a metal porous body with a non-ionic-conductor.

3. The solid-state battery according to claim 1 , wherein the insulating isolation portion is formed by disposing an insulating material.

4. The solid-state battery according to claim 1 , wherein
the electroconductive isolation portion is formed by filling a metal porous body with a non-ionic-conductor, and the insulating isolation portion is formed by disposing an insulating material, and
at least any one of the non-ionic-conductor and the insulating material comprises a strength reinforcing material.

5. A solid-state battery, comprising:
a plurality of electrode layers; and
a solid electrolyte layer disposed between the electrode layers;
each of the electrode layers comprising:
at least one positive electrode portion formed by filling a current collector comprising a metal porous body with a positive electrode material mixture;
at least one negative electrode portion formed by filling a current collector comprising a metal porous body with a negative electrode material mixture; and
an isolation portion formed between the positive electrode portion and the negative electrode portion,
at least one of the positive electrode portion or the negative electrode portion comprising two or more positive or negative electrode portions, and the positive electrode portion and the negative electrode portion being alternately disposed,
the isolation portion comprising an electroconductive isolation portion having electric conductivity and no ionic conductivity and an insulating isolation portion having no electric conductivity and no ionic conductivity, and the electroconductive isolation portion and the insulating isolation portion being alternately disposed, and
the plurality of electrode layers being disposed such that the positive electrode portion and the negative electrode portion face each other, and the electroconductive isolation portion and the insulating isolation portion face each other.

6. The solid-state battery according to claim 5 , wherein the electroconductive isolation portion is formed by filling a metal porous body with a non-ionic-conductor.

7. The solid-state battery according to claim 5 , wherein the insulating isolation portion is formed by disposing an insulating material.

8. The solid-state battery according to claim 5 , wherein
the electroconductive isolation portion is formed by filling a metal porous body with a non-ionic-conductor, and the insulating isolation portion is formed by disposing an insulating material, and
at least any one of the non-ionic-conductor and the insulating material comprises a strength reinforcing material.

Assignees

• Honda Motor Co Ltd

Inventors

• Taniuchi Takuya
• Ohta Masahiro
• Ariga Toshiyuki

Classifications

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M4/624

  Electric conductive fillers · CPC title

• H01M4/661

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title

• H01M4/762

  Porous or perforated metallic containers · CPC title

• H01M10/0585

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