Intermittently coated battery electrode manufacturing method

Patent metadata

Field	Value
Publication number	US-10236497-B2
Application number	US-201414904729-A
Country	US
Kind code	B2
Filing date	Jun 17, 2014
Priority date	Aug 6, 2013
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

An intermittently coated battery electrode manufacturing method capable of preventing a positional displacement from occurring between a first surface of a collector and a second surface opposed to the first surface. The intermittently coated battery electrode manufacturing method includes: forming, at a part of a strip-shaped collector where an active material is not coated, a front end indicator indicating a front end of the active material to be intermittently coated on the collector; performing coating of the active material on a first surface of the collector based on a detection signal of the front end indicator to form an intermittent coating layer; and starting coating of the intermittent coating layer on a second surface opposite to the first surface based on the detection signal of the same front end indicator as that used for forming the active material coating layer on the first surface.

First claim

The invention claimed is:

1. An intermittently coated battery electrode manufacturing method comprising:
forming, on a part of a first surface of a strip-shaped collector where an active material is not coated, a front end indicator indicating a front end of the active material to be intermittently coated on the collector, based on an operation signal;
coating intermittent layers of the active material on the first surface of the strip-shaped collector with a coating die which is responsive to the operation signal used to form the front end indicator; and
coating intermittent layers of the active material on a second surface of the strip-shaped collector, the second surface opposite to the first surface, based on a detection signal of the front end indicator.

2. The intermittently coated battery electrode manufacturing method according to claim 1 , wherein
the front end indicator is positioned inside of a battery outer case, and is not eluted to an electrolyte.

3. The intermittently coated battery electrode manufacturing method according to claim 1 , wherein
the front end indicator comprises identification information.

4. The intermittently coated battery electrode manufacturing method according to claim 3 , wherein
the identification information is linked to coating layer inspection result information so as to sort a defective product.

5. The intermittently coated battery electrode manufacturing method according to claim 1 , wherein the coating of the intermittent layers of the active material on the first surface of the strip-shaped collector and the coating of the intermittent layers on the second surface opposite to the first surface are performed such that a position of the intermittent layers of the active material on the first surface and a position of the intermittent layers of the active material on the second surface coincide.

6. A battery management method wherein
a battery that uses a battery electrode manufactured by a method as claimed in claim 1 is linked to battery use information so as to manage the battery.

Assignees

• Nec Energy Devices Ltd

Inventors

• Takahashi Masahiro
• Sato Tetsuya

Classifications

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• B05D2252/02

  of indefinite length · CPC title

• B05D5/00

  Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures · CPC title

• H01M4/747

  Woven material · CPC title

• B05D1/26

  performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface · CPC title