US 6,670,070 B2 · Battery and process for preparing the same

Abstract

A conventional battery has a problem that a large short-circuit current was generated with temperature rise due to internal short-circuit or the like, and therefore, the temperature of the battery further increases due to exothermic reaction to increase the short-circuit current. The present invention has been carried out in order to solve the above problems. The battery of the present invention is a battery wherein at least one of a positive electrode 1 and a negative electrode 2 comprises an active material layer 6 containing an active material 8 and an electronically conductive material 9 contacted to the active material 8, wherein a solid electrolytic layer 3 is interposed between the above positive electrode 1 and the negative electrode 2, and wherein the above electronically conductive material 9 comprises an electrically conductive filler and a resin so that resistance increases with temperature rise.

Claims8

Dependent claims

A battery comprising:

a positive electrode;
a negative electrode;
and
at least one of a solid electrolytic layer, a gel electrolytic layer and an electrolyte-containing porous layer including fine particles of an electrolyte material, the at least one of the solid electrolytic, gel electrolytic and electrolyte-containing porous layers being positioned between the positive electrode and negative electrode,
wherein at least one of the positive electrode and the negative electrode comprises an active material layer containing an active material and an electronically conductive material contacted to the active material, and
wherein the electronically conductive material comprises an electrically conductive filler and a resin and increases resistance as temperature rise.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

09/742,074Filed 22 Dec 2000 · continuation

Priority

25 Jun 1998

Published

US 2001/0005558 A128 Jun 2001

Granted

30 Dec 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

H01M 4/62
Electrodes composed of, or comprising, active material: selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/13
Electrodes composed of, or comprising, active material: electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators;…
H01M 4/139
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: processes of manufacture
H01M 4/622
Binders: being polymers

Battery and process for preparing the same

Life of this patent

Battery and process for preparing the same

Life of this patent

Abstract

Claims8