Japan Storage Battery Co., Ltd.

Gs Yuasa Corporation

Gs-melcotec Co., Ltd.

Shigeo Komatsu

Hiroshi Nakahara

Mikito Nagata

Hiroyuki Yumoto

Shinya Kitano

Tetsuya Murai

Mikio Okada

Hiroshi Mukai

Hisashi Tsukamoto

Hisashi Tukamoto

Masaaki Nishida

Yasushi Harada

Kazuhiro Nakamitsu

Toshimichi Nakamura

A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.

Nonaqueous secondary electrolytic battery

A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated in both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.

Non-aqueous electrolytic secondary cell

A battery comprising a positive electrode ( ), a negative electrode ( ) and a separator ( ) provided interposed between the positive electrode ( ) and the negative electrode ( ), characterized in that at least one surface of said separator ( ) is bonded to said positive electrode ( ) or negative electrode ( ) via a porous resin layer ( ) containing a solid filler. This battery can provide a battery which exhibits a high energy density and an excellent cycle life performance even if the electricity-storing element is received in a flexible material case.

Battery

A lead is connected to the electrode plate of the power generating element, and exposed externally from the deposited portion of a battery case. The portion of the lead crossing film edges is covered with two flat insulating covering resins which are thermally deposited to each other. At this portion, the covering resins and film edges are thermally deposited to each other. The covering resin is composed of two layers of an outer layer and an inner layer. At least the outer layer is colored and crosslink-coupled by irradiation of electron beams. The outer layer has a higher softening point than the inner layer.

Battery sealed in battery case of resin film

A lithium ion battery includes a thin film of an electrical insulating material such as resin, a positive collector made of an electrically conductive thin film provided on one side of said electrically insulative thin film, a positive compound layer provided on said positive collector, a negative collector made of an electrically conductive thin film provided on the other side of said electrically insulative thin film, a negative compound layer provided on said negative collector, and an electrolyte film provided in contact with at least one of said positive compound layer and said negative compound layer.

Lithium ion battery containing an electrically insulative film

The present invention provides a lithium secondary cell containing a positive electrode including a material which occludes and exudes lithium; a negative electrode containing a negative material including graphite; and a separator disposed between the positive and negative electrodes; wherein the quantity of lithium occluded in the negative material in a fully-charged state is less than 55% of the theoretical lithium occlusion capacity of the negative electrode.

Growing community of inventors

Kyoto, Japan

Shigeo Komatsu