Sony Corporation

Toru Mizutani

Tsuyoshi Sugiyama

Takashi Ono

Masayuki Shida

A battery includes a unit cell including spirally rolled electrodes, a jacket having a recessed section, a cathode lead terminal, and an anode lead terminal. The unit cell is placed in the recessed section, the recessed section is covered with a portion of the jacket, and the cathode and anode lead terminals are each connected to corresponding outer ends of the rolled electrodes, are placed on the side of the rolled electrodes that is exposed from an opening of the recessed section, and extend straight out of the jacket.

Battery including rolled electrodes and straight lead terminals

A gel electrolyte battery in which adhesion between a layer of an active material of an electrode and a gel electrolyte is raised to provide for sufficient mobility of lithium ions, and a method for the preparation of the gel electrolyte battery. The gel electrolyte battery is comprised of a battery device accommodated in an exterior material of a laminated film and sealed in it on heat fusion. The method for the preparation of the gel electrolyte battery includes a battery device preparation step of layering a positive electrode and a negative electrode via a gel electrolyte to form the battery device, an accommodating step of accommodating the battery device from the battery device preparation step in the laminated film, and a heating step of heating the battery device, accommodated in the laminated film in the accommodating step, under a pressured state.

Gel electrolyte battery

A nonaqueous electrolyte battery with a higher energy density in which a useless part which has no contribution to the electromotive is reduced, and a method for manufacturing the same are provided. A positive electrode laminate () (a positive electrode) having a positive active material layer () is located in a first area which extends from an approximate center part () to one end on one of both sides of a separator, and a negative electrode laminate () (a negative electrode) having a negative active material layer () is located in a second area which extends from the approximate center part () to the other end on the other side which is opposite to the side having the first area of the separator (). The separator () having the positive electrode laminate () and the negative electrode laminate () thereon is wound around the approximate center part () to constitute a wound electrode ().

Growing community of inventors

Fukushima, Japan

Toru Mizutani