Sanyo Electric Co., Ltd.

Sanyo Electronic Co., Ltd.

Takashi Oda

Hideki Okajima

Tatsuhito Horiuchi

Yoshinobu Okumura

Hitoshi Tanaka

Yukichi Uesugi

Shoichi Toya

Akira Hamada

Takaaki Matsubayashi

Nobuyoshi Nishizawa

Akira Watanabe

Yasunobu Kodama

Tsukasa Itou

Masato Nishioka

Yoshiharu Takasaki

Tsutomu Sonozaki

Tadashi Furukawa

Isao Furukawa

Michinori Ikezoe

Hiroshi Mukai

In the method for manufacturing the battery module according to this invention, after a pair of welding upper/lower electrodes or are arranged in contact on the cases of adjacent unit cells of a plurality of unit cells aligned in a line, a welding current is passed between the pair of welding upper electrodes from a welding power source while both ends of the unit cells are pressurized by pressurizing members under a prescribed pressure. Thus, Joule heat is generated at the contact portion between the bottom of the outer case of the unit cell and the positive polarity terminal of the unit cell so that the contact portion melts. Accordingly, the bottom of the outer case of the unit cell and the positive polarity terminal of the unit cell are welded to each other at the contact portion.

Method and apparatus for manufacturing battery module and unit battery cell for use in battery module

A power supply apparatus including a plurality of power modules, a holder-case, and a fan. The holder-case is box-shaped with a first surface plate and second surface plate as two surfaces, and contains a plurality of power modules arranged laterally, parallel, and in the same plane. A plurality of walls are provided between the plurality of laterally arranged power modules, and divide the holder-case interior into a plurality of rows of partitions. One row of power modules is disposed in each partition row. The power supply apparatus uses the fan to divide and induce air flow through flow inlets formed in the first surface plate into the plurality of partitions, and expels air out exhaust outlets formed in the second surface plate to cool power modules disposed inside each partition.

Power supply apparatus

A battery module of the present invention comprises an annular connecting member having an aperture at a position corresponding to a cap provided on a sealing plate and between the sealing member of one cell B and a bottom of a can of the other cell A. The annular connecting member comprises an annular base portion having its outer diameter smaller than an inner diameter of the opening portion of the can , a convex portion with bottom protruding upward or downward alternately from the annular base portion , and a projection projecting from the bottom of the convex portion . Thereby, the connecting portion between the cell A and the cell B has a collecting path of a length between both projections , namely, a length between the sealing plate of the cell B and the bottom of the can of the cell A, whereby the voltage drop across the connecting portion decreases, resulting in a battery module having high operation voltage.

Battery module and method of manufacturing thereof

A battery unit comprises a plural number of cells. The cells are provided with temperature sensors adjacent thereto respectively. One cell is provided with one temperature sensor adjacent thereto, but all of the cells are not provided with temperature sensors; so that the total number of temperature sensors is less than the total number of cells. Cells provided with temperature sensors adjacent thereto, respectively, and cells not provided with any temperature sensor are mixedly connected. The temperature sensors are divided into a plural number of temperature sensor blocks, and an abnormal temperature of a cell is detected by comparing resistance values of the temperature sensor blocks with one another.

Battery unit which can detect an abnormal temperature rise of at least one of a plurality of cells

The power supply apparatus has a plurality of power modules, a holder-case housing a parallel arrangement of power modules in a plurality of rows and columns, and a fan. The interior of the holder-case is divided into a plurality of partitions by walls. Wall surfaces follow the contours of power module surfaces to establish cooling ducts of uniform width. The holder-case has flow inlets opened through the first surface plate and exhaust outlets opened through the second surface plate. The power supply apparatus uses the fan to divide and induce air flow through flow inlets into a plurality of partitions, and expels air which has passed through cooling ducts out the exhaust outlets thereby cooling power modules disposed inside the partitions.

An assembled storage battery unit of the collective type includes a plurality of storage batteries assembled as a unit. The storage batteries each include positive and negative electrodes layered through a separator and contained in a bottomed parallelepiped battery casing filled with electrolyte and a closure plate welded to an upper opening end of the battery casing to seal the interior of the battery casing. The battery casings each are integrally formed with a plurality of vertical ribs spaced in parallel at one side wall thereof faced to the corresponding side wall of the battery casing adjacent thereto. The vertical ribs of each of the battery casings are coupled with the corresponding vertical ribs of the battery casing adjacent thereto to form a plurality of vertical ventilation spaces.

Assembled storage battery unit of the collective type

A power source includes a holder-case,and a plurality of parallel oriented power modules,in the holder-case,. The power modules,are provided with electrode terminals,at both ends. The holder-case,is of split construction having cover-casings,provided on both sides. At least one of the cover-casings,is provided with holder ribs,. The holder ribs,have retaining cavities,which retain the power modules,and prevent their rotation.

Power source

A quick and simple manufacturing method for a current collector single body sheet-like composite positive electrode of superior electrode performance includes a positive electrode mixture generating process mixing non-aqueous solvent, polymer material, electrolyte salt, positive electrode active material and electrically conductive material, a positive electrode mixture pressing out process after the mixture has been applied onto the positive electrode current collector and a process for hardening the sheet-like electrode, at a same time attaching the sheet-like electrode to the positive electrode current collector using heat or ionizing radiation to polymerize the polymer material distributed in the mixture. An efficient manufacturing method for a polymer solid electrolyte cell of superior cell capacity and cell characteristics which uses said composite positive electrode additionally includes a process for arranging a polymer solid electrolyte precursor on a negative electrode, a process for arranging a current collector single body composite positive electrode on the electrolyte precursor on the surface of the negative electrode so that the positive and negative electrodes face each other with electrolyte precursor in-between, and a process for hardening the electrolyte precursor to form a polymer solid electrolyte film, at a same time attaching said film to the positive electrode by using heat or ionizing radiation to polymerize the polymer solid electrolyte precursor.

Manufacturing method for a polymer solid electrolyte cell which uses

The present invention provides a portable power source comprising a fuel cell generating electricity using hydrogen as fuel, a hydrogen storage unit filled with hydrogen absorbing alloy for supplying hydrogen to the fuel cell, a case enclosing the fuel cell and hydrogen storage unit, and a lid for sealing a part of the case when the portable power source is not in use, wherein the lid seals a surface of the case on which at least one air inlet for taking in the air necessary for the fuel cell to generate electricity and a reactant gas outlet for exhausting reactant gas produced by the generation of electricity are formed.

Growing community of inventors

Kato-gun, Japan

Takashi Oda