ALL-SOLID-STATE BATTERY AND MANUFACTURING METHOD THEREOF

• US 20110281160A1
• Filed: 02/04/2009
• Published: 11/17/2011
• Est. Priority Date: 02/04/2009
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Doi, Takayoshi
• Granted Patent: US 8,338,036 B2
• Time in Patent Office: Days
• US Class Current: 429/211
• CPC Class Codes: H01M 10/0413 Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• CPC Class Codes: H01M 10/0459 Cells or batteries with folded separator between plate-like electrodes
• CPC Class Codes: H01M 10/0468 Compression means for stacks of electrodes and separators
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• 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 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• 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

An all-solid-state battery, and manufacturing method thereof. The all-solid-state battery has a plurality of laminated bodies including: a cathode layer; an anode layer; and a solid electrolyte layer sandwiched therebetween, when neighboring two laminated bodies are defined as a first and second laminated body, the solid electrolyte layer of the first and second laminated body being connected through an insulating layer, to a pair of side surfaces of the laminated plurality of the laminated bodies, a first current collector which is connected with the cathode layer but not connected with the anode layer and a second current collector which is connected with the anode layer but not connected with the cathode layer being arranged respectively, a plurality of insulating layers connected to the solid electrolyte layers being arranged between the cathode layer and the second current collector and between the anode layer and the first current collector.

Claims

1. An all-solid-state battery comprising a plurality of laminated bodies each of which comprises:

a cathode layer;

an anode layer; and

a solid electrolyte layer arranged between the cathode layer and the anode layer,

when neighboring two laminated bodies optionally selected from the plurality of laminated bodies are defined as a first laminated body and a second laminated body, the plurality of laminated bodies being laminated such that the cathode layer of the first laminated body and the cathode layer of the second laminated body are in contact with each other, or such that the anode layer of the first laminated body and the anode layer of the second laminated body are in contact with each other,

the solid electrolyte layer of the first laminated body and the solid electrolyte layer of the second laminated body being connected through an insulating layer,

to a pair of side surface of laminated plurality of the laminated bodies, a first current collector which is connected with the cathode layer but not connected with the anode layer and a second current collector which is connected with the anode layer but not connected with the cathode layer being arranged respectively,

a plurality of insulating layers connected to the solid electrolyte layers being arranged between the cathode layer and the second current collector and between the anode layer and the first current collector.

2. A method for manufacturing all-solid-state battery comprising the steps of:

forming a plurality of insulating layers on a base material at intervals;

after forming the insulating layers, forming a plurality of electrolyte layers in at least a plurality of gaps between the neighboring insulating layers;

after forming the electrolyte layers, forming electrode layers, wherein a plurality of cathode layers are formed at intervals on one side of the base material including a surface of the solid electrolyte layer formed between the plurality of insulating layers, a plurality of anode layers are formed at intervals on the other side of the base material including the surface of the solid electrolyte layer formed between the plurality of insulating layers;

folding the base material at the both ends of the insulating layers as creases; and

arranging current collectors, wherein a first current collector is arranged to be in contact with the cathode layer but not to be in contact with the anode layer and a second current collector is arranged to be in contact with the anode layer but not to be in contact with the cathode layer.