METHOD FOR PRODUCING ALL-SOLID-STATE BATTERY

• US 20200136191A1
• Filed: 10/22/2019
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: KOJIMA, Shinji
• Granted Patent: US 11,431,033 B2
• Time in Patent Office: Days
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 2300/0068 inorganic
• CPC Class Codes: H01M 4/04 Processes of manufacture in general
• CPC Class Codes: H01M 50/10 Primary casings; Jackets or wrappings
• CPC Class Codes: H01M 50/105 Pouches or flexible bags
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

To provide a method for producing an all-solid-state battery which is configured to suppress chipping of a cut end, shedding of the constituent materials, etc., and which is configured to suppress removal of the solid electrolyte layer. The method is a method for producing an all-solid-state battery, comprising: preparing a first laminate by laminating a first solid electrolyte layer on a first active material layer, forming a solid electrolyte removed part by removing a part of the first solid electrolyte layer on the first active material layer, and cutting the first laminate by applying laser light, in a laminating direction of the first laminate, to the solid electrolyte removed part.

Claims

1. A method for producing an all-solid-state battery, the method comprising:

preparing a first laminate by laminating a first solid electrolyte layer on a first active material layer,

forming a solid electrolyte removed part by removing a part of the first solid electrolyte layer on the first active material layer, and

cutting the first laminate by applying laser light, in a laminating direction of the first laminate, to the solid electrolyte removed part.

2. The method for producing the all-solid-state battery according to claim 1,

wherein the method further comprises, before the cutting, preparing a second laminate by laminating a counter electrode-side active material layer on one side of the first solid electrolyte layer, which is opposite to the side on which the first active material layer is laminated, and

wherein the cutting is cutting the second laminate by applying laser light, in a laminating direction of the second laminate, to the solid electrolyte removed part.

3. The method for producing the all-solid-state battery according to claim 1,

wherein a third laminate in which the first solid electrolyte layer, the first active material layer, an electrode current collector, a second active material layer and a second solid electrolyte layer are laminated in this order, is prepared as the first laminate, and

wherein, in the cutting, the third laminate is cut by applying laser light, in a laminating direction of the third laminate, to the solid electrolyte removed part.