Manufacturing method for all-solid-state battery, manufacturing apparatus for all-solid-state battery, and all-solid-state battery

Patent metadata

Field	Value
Publication number	US-10153520-B2
Application number	US-201715606499-A
Country	US
Kind code	B2
Filing date	May 26, 2017
Priority date	Jun 1, 2016
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

A manufacturing method for an all-solid-state battery includes: producing a laminated battery having both end surfaces in a lamination direction and a side surface by laminating pluralities of collector layers, positive electrode mixture layers, solid electrolyte layers, and negative electrode mixture layers; supplying a liquid resin to only the side surface of the laminated battery; and curing the liquid resin. Producing the laminated battery by protruding at least one layer of the collector layer, the positive electrode mixture layer, the solid electrolyte layer, and the negative electrode mixture layer relative to remaining of the layers to form a protruding layer. Protruding a plurality of protruding layers from the side surface of the battery. Supplying the resin involves supplying the liquid resin to only the side surface of the laminated battery such that the liquid resin penetrates into a clearance between one protruding layer and another protruding layer.

First claim

What is claimed is:

1. A manufacturing method for an all-solid-state battery, the manufacturing method comprising:
producing a laminated battery having both end surfaces in a lamination direction and a side surface by laminating pluralities of collector layers, positive electrode mixture layers, solid electrolyte layers, and negative electrode mixture layers, producing the laminated battery by protruding at least one layer of the collector layer, the positive electrode mixture layer, the solid electrolyte layer, and the negative electrode mixture layer relative to remaining of the collector layer, the positive electrode mixture layer, the solid electrolyte layer, and the negative electrode mixture layer to form a protruding layer, and protruding a plurality of protruding layers from the side surface of the laminated battery;
supplying a liquid resin to only the side surface of the laminated battery, supplying the liquid resin including supplying the liquid resin to only the side surface of the laminated battery such that the liquid resin penetrates into a clearance between one protruding layer and another protruding layer; and
curing the liquid resin.

2. The manufacturing method according to claim 1 , further comprising, after completion of supplying the liquid resin and before start of curing the liquid resin, raising an atmospheric pressure above an atmospheric pressure at which the liquid resin is supplied.

3. The manufacturing method according to claim 1 , further comprising, after completion of producing the laminated battery and before start of supplying the liquid resin, reducing an atmospheric pressure below an atmospheric pressure at which the laminated battery is produced.

4. The manufacturing method according to claim 1 , further comprising, after completion of producing the laminated battery and before start of supplying the liquid resin, covering both end surfaces in the lamination direction of the laminated battery with a cover member, wherein supplying the liquid resin includes protecting both end surfaces in the lamination direction of the laminated battery from the liquid resin by the cover member.

5. The manufacturing method according to claim 1 , wherein the resin is supplied while the laminated battery is held by a jig, the jig having a lower bottom surface covering one end surface in the lamination direction of the laminated battery, an upper cover member covering the other end surface in the lamination direction of the laminated battery, and a side surface tapered from the upper cover member toward the lower bottom surface.

6. The manufacturing method according to claim 1 , wherein producing the laminated battery includes forming a bipolar electrode layer by the collector layer, the positive electrode mixture layer, and the negative electrode mixture layer.

7. An apparatus that manufactures an all-solid-state battery by supplying a liquid resin to only a side surface of a laminated battery and then curing the liquid resin on the laminated battery, the laminated battery having both end surfaces in a lamination direction and the side surface and in which a plurality of protruding layers protrude from the side surface, with a clearance left between one protruding layer and another protruding layer, the apparatus comprising:
a chamber configured to house the laminated battery; and
a resin supply unit configured to supply a liquid resin to only the side surface of the laminated battery housed in the chamber.

8. The apparatus according to claim 7 , further comprising a pressure control unit configured to control a pressure inside the chamber, the pressure control unit being configured to relatively raise the pressure inside the chamber after the liquid resin is supplied from the resin supply unit to only the side surface of the laminated battery and before the liquid resin is cured.

9. The apparatus according to claim 8 , wherein the pressure control unit is configured to relatively reduce the pressure inside the chamber after the laminated battery is housed in the chamber and before the liquid resin is supplied from the resin supply unit to only the side surface of the laminated battery.

10. The apparatus according to claim 7 , further comprising a pressure control unit configured to control a pressure inside the chamber, the pressure control unit being configured to relatively reduce the pressure inside the chamber after the laminated battery is housed in the chamber and before the liquid resin is supplied from the resin supply unit to only the side surface of the laminated battery.

11. The apparatus according to claim 7 , further comprising a jig configured to hold the laminated battery while protecting the end surfaces in the lamination direction of the laminated battery, wherein the liquid resin is supplied from the resin supply unit to only the side surface of the laminated battery in a state where the jig protects the end surfaces in the lamination direction of the laminated battery.

12. The apparatus according to claim 11 , wherein the jig has a lower bottom surface covering one end surface in the lamination direction of the laminated battery, an upper cover member covering the other end surface in the lamination direction of the laminated battery, and a side surface tapered from the upper cover member toward the lower bottom surface.

13. The apparatus according to claim 7 , further comprising a jig configured to hold the laminated battery while protecting the end surfaces in the lamination direction of the laminated battery, the jig having a lower bottom surface covering one end surface in the lamination direction of the laminated battery, an upper cover member covering the other end surface in the lamination direction of the laminated battery, and a side surface tapered from the upper cover member toward the lower bottom surface.

14. The apparatus according to claim 7 , further comprising a heating unit that heats at least the side surface of the laminated battery.

15. The apparatus according to claim 7 , further comprising a cooling unit that cools at least the side surface of the laminated battery.

16. An all-solid-state battery, comprising:
a laminated battery formed by laminating pluralities of collector layers, positive electrode mixture layers, solid electrolyte layers, and negative electrode mixture layers;
outermost collector layers constituting both end surfaces in a lamination direction of the laminated battery; and
a resin coating only a side surface of the laminated battery, wherein
at least one layer of the collector layer, the positive electrode mixture layer, the solid electrolyte layer, and the negative electrode mixture layer is protruded outward relative to remaining of the collector layer, the positive electrode mixture layer, the solid electrolyte layer, and the negative electrode mixture layer to form a protruding layer, and a plurality of protruding layers protrude from the side surface of the laminated battery,
the resin has penetrated into a clearance between one protruding layer and another protruding layer, and
a battery case that seals the laminated battery except for the outermost collector layers is formed by the outermost collector layers and the resin, and the outermost collector layers serve as battery terminals.

17. The all-solid-state battery according to claim 16 , wherein the collector layer, the positive electrode mixture layer, and the negative electrode mixture layer constitute a bipolar electrode layer.

Assignees

• Toyota Motor Co Ltd

Inventors

• Iwano Yoshihiro
• Tsujiko Akira
• Kamata Fuhito
• Kawamura Tomonori
• Kawakami Mikio

Classifications

• H01M50/548

  on opposite sides of the cell · CPC title

• H01M50/124

  having a layered structure · CPC title

• H01M50/121

  Organic material · CPC title

• B32B2305/72

  Cured, e.g. vulcanised, cross-linked · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title