Gs Yuasa International Ltd.

Kazuhide Tozuka

Masakazu Tsutsumi

Takeshi Sasaki

Katsuhiko Okamoto

Kazuaki Matsuo

Kenji Tanaka

Kazuya Okabe

Yoshinori Tanaka

Shinsuke Yoshitake

Yasuhiro Sogo

An electricity-storing device includes a first electrode, a second electrode of opposite polarity as the first electrode, and a separator. The first electrode includes a current collector foil, an active material layer formed on at least one surface of the current collector foil, and an electrical resistance layer formed on the at least one surface of the current collector foil so as to be adjacent to and in direct contact with the active material layer, at least a portion of an interface between the active material layer and the electrical resistance layer including a mixed phase where constituents from the active material layer and the electrical resistance layer intermingle.

Electrode for electricity-storing device, electricity storing device employing such electrode, and method of manufacturing electrode for electricity-storing device

A battery includes a battery container containing a power generating element, a lid plate covering a top opening of the battery container, and including a baffling portion, whose upper surface includes at least one of a first projecting portion and a first recessed portion, and an external terminal including a base portion and a second projecting portion that projects upward from the base portion. The base portion is engaged with the baffling portion of the lid plate.

Battery and method of manufacturing the same

Provided are an electrode assembly including a sheet-shaped current collector that has, on at least one face thereof, a mixture agent layer containing an active material and is spirally wound, in which the current collector has, in a portion on a side of at least one end of a winding axis, a non-mixture agent layer part having no mixture agent layer formed therein, and a mass per unit area of the mixture agent layer is larger in an edge portion on the side of the non-mixture agent layer part by 0.3% or more and 1.0% or less than in a portion other than the edge portion; and an electric storage device including the electrode assembly.

Electrode assembly and electric storage device

A battery includes a power generating element, a battery container containing the power generating element, a lid plate covering a top opening of the battery container, the lid plate including a metal plate and a baffling portion including an integral portion of the lid plate that extends from the lid plate, and an insulating member provided on the lid plate. Corners of the insulating member fit to corners of the baffling portion.

Provided is a battery which has less tendency to experience delamination or loss of short circuit prevention layer and/or active material layer during manufacture and use. A battery comprising a laminated electrode assembly in which a positive electrode, a negative electrode, and a separator are laminated together; wherein an alumina-containing layer containing &#x3b3;-alumina particles is formed on at least one species selected from among the group consisting of the positive electrode, the negative electrode, and the separator. The fact that alumina-containing layer(s) is or are made to contain &#x3b3;-alumina particles makes it possible to obtain high bond strength between alumina-containing layer(s) and electrode(s) comprising metal(s), current collector(s) and/or active material(s) making up electrode(s), and/or separator(s).

Battery

An electricity-storing device electrode includes a current collector foil, an active material layer formed on a surface of the current collector foil, and a high-resistance layer formed on the surface of the current collector foil so as to be adjacent to and in direct contact with the active material layer. At at least a portion of the interface between the active material layer and the high-resistance layer, mixed phase is formed where constituents from the two layers intermingle.

Electrode for electricity-storing device, electricity-storing device employing such electrode, and method of manufacturing electrode for electricity-storing device

It is an object of the present invention to provide a battery in which current collecting connectorandand groupsandof metal foil of a power generating elementcan be easily connected, respectively, and a method of manufacturing the same. First plate portionsandwhich respective protruding ends of metal foil of the groupsandof metal foil of the power generating elementcome in contact with or close to and second plate portionsandprotruding from the first plate portionsandtoward the power generating elementand disposed only at one outer side portions of the groupsandof metal foil are provided to the other portions of the current collecting connectorsandof the invention and the groupsandof metal foil are welded to the second plate portionsand

Battery and method of manufacturing same

The present invention provides a battery that includes: a lid plate provided with a terminal pull-out through hole and a baffling portion whose upper surface is configured in a projecting and/or recessed manner; an auxiliary terminal configured such that a lower portion thereof is connected to a metallic foil of a power generating element by being fitted into a battery container through the terminal pull-out through hole, and sealed and fixed to the lid plate by insulating and sealing members; a connecting conductor connected and fixed to an upper portion of the auxiliary terminal; and an external terminal having a bolt portion that projects upward from a base portion, the bolt portion being inserted through the terminal through hole of the connecting conductor from below, and the base portion being engaged with the baffling portion of the lid plate, thereby restricting rotation centering an axial line of the bolt portion.

Growing community of inventors

Kyoto, Japan

Kazuhide Tozuka