Matsushita Electric Industrial Co., Ltd.

Takeshi Inui

Toshiyuki Shimizu

Takayuki Tanahashi

Fumio Daio

Takayuki Aoi

Yoshimitsu Kaneda

Hiroaki Yoshino

Ryuichiro Ebi

Kenji Yoshioka

Daisuke Yoshida

Takae Okazaki

Yukihiro Gotanda

Toru Hitomi

Emergency informing terminal and emergency informing system including the terminal

A plurality of cells are disposed in close contact with each other with their longitudinal axes parallel to each other, and their electrode terminals that are juxtaposed at one end are electrically connected to each other with a connector piece. These cells thus joined together are inserted into and held within a frame body formed in one-piece with a pair of end face covers, connecting bar, and retaining piece, or alternatively, inserted into and held within a cell casing having a pair of end face covers, bottom wall, and partition boss formed integrally therewith.

Battery pack

A battery has one terminal on a sealing assembly fitted to one open end of the cell casing, and the other terminal on the exterior surface of the cell casing such as to extend along the entire circular circumferential surface of a predetermined width. The other end of the cell casing opposite from the terminal is electrically insulated by affixing nonconductive films thereto. Two heat-shrinkable nonconductive labels are wound around and bonded to the cell casing, so that the terminal is formed in a recessed, ring-like form between the heat-shrinkable nonconductive labels.

Battery and battery holder

In a battery comprising a spirally wound electrode group, a lead plate drawn from one electrode of the electrode group and connected to the inner bottom surface of the battery case in electrically conducting relationship, and an insulating plate interposed between the lead plate and the electrode group, at least the bottom surface of the insulating plate is formed from a heat weldable material, and the lead plate is heat-welded to this heat weldable material. This construction not only serves to completely prevent accidental short-circuiting, but enables high-speed assembling of batteries.

Method of fabricating batteries having spirally wound electrodes

A non-aqueous electrolyte cell has an electrode assembly including a negative electrode strip, a positive electrode strip having an active cathode material, and a separator. The positive electrode strip and the negative electrode strip are superposed with the separator therebetween and wound in a spiral. The negative electrode strip is disposed outside the positive electrode strip and has an outermost winding, a negative electrode strip winding end, and a penultimate winding. The positive electrode strip has an outermost winding terminating at a positive electrode strip winding end. An anode current collector contacts the negative electrode strip on the penultimate winding and is radially aligned with a portion of the outermost winding of the positive electrode strip. Insulating tape is bonded to an inside surface and an outside surface of the positive electrode strip extending from the positive electrode strip winding end and has an outer portion extending one of continuously and intermittently on the outer surface of the positive electrode strip a greater distance than an inner portion of the insulating tape covering the inner side of the positive electrode strip. In an embodiment, the outer portion of the insulating tape continuously extends from the positive electrode strip winding end to a point radially aligned with the anode current collector. Alternatively, an auxiliary insulating tape is bonded to an inside surface of the outermost winding of the negative electrode strip in place of the above outer portion of the insulating tape.

Non-aqueous electrolyte cell

Battery having spirally wound electrodes

Growing community of inventors

Yao, Japan

Takeshi Inui