Murata Manufacturing Co., Ltd.

Sony Corporation

Yosuke Konishi

Tomoyuki Nakamura

Kunihiko Hayashi

Tetsuya Makino

Hiroshi Takabayashi

Hiroyuki Akashi

Yoshiaki Obana

Tomitaro Hara

Atsushi Kajita

Akira Sasaki

Kenichi Ogawa

Akira Saito

A non-aqueous electrolyte battery includes a battery device in which a positive electrode is faced to negative electrode through a separator; a non-aqueous electrolyte; a laminate film which is formed by laminating a metal layer, an outside resin layer formed in outer face of the metal layer, and an inside resin layer formed in the metal layer, and in which the battery device and the non-aqueous electrolyte is packaged by heat welding and housed; a positive electrode lead which is electrically connected to the positive electrode, and drawn from portion heat-welded of the laminate film to an exterior thereof; a negative electrode lead which is electrically connected to the negative electrode, and drawn from portion heat-welded of the laminate film to an exterior thereof; and a porous polymer layer containing, as a component, vinylidene fluoride formed between the laminate film and the battery device.

Non-aqueous electrolyte battery having porous polymer layer between laminate film and battery device

There is provided a secondary battery including a battery device that has a thickness of 3 to 20 mm, and a battery discharge capacity of 3 to 50 Ah, and an exterior material that packages the battery device. The battery device includes a positive electrode that has a positive electrode current collector and a positive electrode active material layer, a negative electrode that has a negative electrode current collector and a negative electrode active material layer, a separator that is interposed between the positive electrode and the negative electrode that are alternately laminated, a positive electrode tab that is electrically connected to a positive electrode current collector exposed portion and is led-out to the outside of the exterior material, and a negative electrode tab that is electrically connected to a negative electrode current collector exposed portion and is led-out to the outside of the exterior material.

Secondary battery for large current charge and discharge characteristic

A battery in which a cathode and an anode are arranged so as to face each other an having a separator in between is provided. The separator is formed from a plurality of laminated microporous membranes and has a film thickness of 10x &#x3bc;m and a piercing strength of 150x gf or more, where 1&#x2266;x&#x2266;2. The air permeability of one layer among the plurality of microporous membranes is equal to or larger than 10% of the air permeability of the whole separator.

Separator and battery

Growing community of inventors

Fukushima, Japan

Yosuke Konishi