Spirally-wound lithium battery

Patent metadata

Field	Value
Publication number	US-9748610-B2
Application number	US-201514757403-A
Country	US
Kind code	B2
Filing date	Dec 23, 2015
Priority date	Dec 25, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A spirally-wound lithium battery includes: a bottomed cylindrical cell can doubling as an anode current collector; and a strip-shaped electrode body including an anode and a cathode arranged faced each other via a separator, the anode including an anode active material of lithium metal or alloy, the cell can being sealed, with a non-aqueous organic electrolyte, containing the electrode body wound in a longitudinal direction, the electrode body being wound from a winding axis side around the axis in a vertical direction, an extending direction of a cell can cylindrical axis, such that the anode is arranged at an outermost circumference, the electrode body is attached with a conductor, continuously extending in the longitudinal direction thereof, on an outer circumferential surface of the anode, from a winding end of the anode to an area thereof opposed to an inner surface of the cathode on its winding end side.

First claim

The invention claimed is:

1. A spirally-wound lithium battery comprising:
a bottomed cylindrical cell can doubling as an anode current collector;
a strip-shaped electrode body including an anode and a cathode arranged to be opposed to each other via a separator, the anode including an anode active material of lithium metal or lithium alloy; and
a conductor that is sealed inside the cell can, wherein
the cell can is sealed, together with a non-aqueous organic electrolyte and the conductor, containing the electrode body in such a state as to be wound in a longitudinal direction,
the electrode body is wound from a winding axis side around a winding axis in an up-and-down direction such that the anode is arranged at an outermost circumference, the up-and-down direction being an extending direction of a cylindrical axis of the cell can, and
the conductor is attached to the electrode body on an outer circumferential surface of the anode, from a winding end of the anode to an area thereof opposed to an inner surface of the cathode on its winding end side, the conductor continuously extending in the longitudinal direction of the electrode body.

2. The spirally-wound lithium battery according to claim 1 , wherein
the conductor has a width in the up-and-down direction equal to or greater than 5% and smaller or equal to 100% of a width in the up-and-down direction of the electrode body.

Assignees

• Fdk Tottori Co Ltd
• Fdk Corp

Inventors

• Fujita Yoshie
• Nishiguchi Nobuhiro
• Sunada Satoshi
• Kobashi Takahide

Classifications

• H01M10/0587 Primary

  of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators · CPC title

• H01M2/0285

  Electricity · mapped topic

• H01M10/052

  Li-accumulators · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/0431

  Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title