Nonaqueous secondary battery and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-2016149170-A1
Application number	US-201414899866-A
Country	US
Kind code	A1
Filing date	Jun 19, 2014
Priority date	Jun 21, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

A nonaqueous secondary battery which can be made thinner without deterioration of battery performance, and a method for manufacturing the battery. The nonaqueous secondary battery includes a positive electrode and a negative electrode which are substantially arranged in the same plane so that respective end surfaces face each other at a distance; a substrate by which the positive electrode and the negative electrode are affixed and supported; a cover member having gas barrier properties, which defines an airtight chamber together with the substrate, in the chamber in which the positive electrode and the negative electrode are contained; and an electrolyte which is contained in the airtight chamber so as to be positioned at least between the facing end surfaces of the positive electrode and the negative electrode, and which relates to the battery reaction between the positive electrode and the negative electrode.

First claim

1 . A nonaqueous secondary battery comprising:
a positive electrode; a negative electrode; a substrate; a cover member; and an electrolyte, wherein the positive electrode and the negative electrode are arranged in substantially the same plane and respective end surfaces of the positive electrode and the negative electrode face each other at a distance; the substrate fixingly supports the positive electrode and the negative electrode; the cover member has gas barrier properties and defines an airtight chamber together with the substrate; the airtight chamber contains the positive electrode and the negative electrode; the electrolyte is contained in the airtight chamber and is configured to be present at least between the facing end surfaces of the positive electrode and the negative electrode; and the electrolyte is involved in a battery reaction between the positive electrode and the negative electrode.

2 . The battery according to claim 1 , wherein the cover member has hydrofluoric acid-resistance.

3 . A method for manufacturing a nonaqueous secondary battery, the method comprising:
forming a positive electrode and a negative electrode both on a substrate, respective end surfaces of the positive electrode and the negative electrode facing each other at a distance; bonding a cover member to the substrate, the cover member being configured to define an airtight chamber together with the substrate, the airtight chamber containing the positive electrode and the negative electrode; and filling the airtight chamber with an electrolyte which is involved in a battery reaction between the positive electrode and the negative electrode, the electrolyte being present at least between the facing end surfaces of the positive electrode and the negative electrode.

4 . A method for manufacturing a nonaqueous secondary battery, the method comprising:
forming a positive electrode and a negative electrode both on a substrate, respective end surfaces of the positive electrode and the negative electrode facing each other at a distance; disposing an electrolyte involved in a battery reaction between the positive electrode and the negative electrode, at least between facing end surfaces of the positive electrode and the negative electrode; and fixing a cover member to the substrate, the cover member being configured to define an airtight chamber together with the substrate, the airtight chamber containing the positive electrode and the negative electrode, and the airtight chamber being filled with the electrolyte, wherein the electrolyte is a gel electrolyte or a solid electrolyte.

5 . The according to claim 3 ,
wherein the forming comprises: forming a current collector by forming a conductive layer on a surface of the substrate, and patterning the conductive layer, applying a resist composition and forming a resist layer on a surface of the substrate including the current collector, forming a guide hole configured to form a positive electrode or a negative electrode above the current collector by irradiating the surface of the resist layer with light through a mask for and developing the resist layer, and forming an active material layer on a surface of the current collector by using the guide hole as a casting mold.

6 . The method according to claim 4 ,
wherein the forming comprises: forming a current collector by forming a conductive layer on a surface of the substrate, and patterning the conductive layer, applying a resist composition and forming a resist layer on a surface of the substrate including the current collector, forming a guide hole configured to form a positive electrode or a negative electrode above the current collector by irradiating the surface of the resist layer with light through a mask and developing the resist layer, and forming an active material layer on a surface of the current collector by using the guide hole as a casting mold.

Assignees

• Tokyo Ahka Kogyo Co Ltd
• Tokyo Ohka Kogyo Co Ltd

Inventors

• Asai Takahiro
• Ishikawa Kaoru
• Hagihara Mitsuo

Classifications

• H01M10/058 Primary

  Construction or manufacture · CPC title

• H01M50/133

  Thickness · CPC title

• H01M50/145

  for protecting against corrosion · CPC title

• H01M50/103

  prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title

• H01M50/119

  Metals · CPC title