Sony Corporation

Nissan Motor Company Limited

Hideya Takahashi

Ryoichi Yamane

Yoshikazu Kanaishi

Etsuo Ogami

Satoshi Iwatsu

Tatsuo Shimizu

Yosuke Kita

Kiyoshi Katayama

Hisanori Narita

Hirokazu Sawada

Tatuo Shimizu

A battery device having a large number of secondary cells in which the voltage of a large number of secondary batteries can be detected and controlled to facilitate the handling and to improve the reliability. The battery device is made up of a modular casing , a large number of secondary batteries housed in the modular casing , plural cell control units and an exterior casing accommodating the modular casing . The modular casing has an inner casing member and an outer casing member and has a large number of terminal openings opened in it. The secondary batteries are housed in the modular casing via the terminal openings so that positive terminal and negative terminal are alternately exposed to outside. A pre-set number of secondary batteries are grouped together as a set, with the totality of the secondary batteries being arranged in a plurality of such sets. The cell control unit has the functions of detecting and controlling the voltage of each battery module and each secondary battery and of inputting and outputting detection and control signals. The exterior casing is provided with a positive electrode terminal , a negative electrode terminal and a transmission/reception terminal of the cell control unit

Battery device for loading on a mobile system

A battery device housing a large number of secondary batteries, in which the batteries can be cooled efficiently as the effect of excessive vibrations or shock or changes in environmental conditions on the housed secondary batteries is suppressed and as sufficient air-tightness is maintained. The battery device includes a modular casing having a battery housing section in its inside and a large number of terminal openings an outer casing member for housing the modular casing in an accommodating space section and a large number of secondary batteries housed in the battery housing section so that terminal sections are exposed to outside through terminal openings The secondary batteries are connected in series with one another. The modular casing is housed in the outer casing member with a gap p between facing outer and inner peripheries with the interposition of mounting portions The modular casing is provided with a suction unit and an exhaust section for supplying and exhausting cooling air to or from the battery housing section The secondary batteries are accommodated in the battery device so that both ends of the batteries are cemented with an adhesive to the terminal openings and so that the outer peripheries of the batteries face the inner surface of the battery housing section with a gap in-between.

Battery device for loading on moving body

A battery device in which a large number of secondary batteries are efficiently housed and cemented strongly so that malfunctioning secondary batteries found after assembling can be exchanged and so that unusual heat evolution can be detected reliably. To this end, a pair of modular casing halves having battery housing half sections and a large number of terminal openings communicating with the battery housing half sections are coupled to each other to constitute a modular casing having a battery housing section A large number of secondary batteries are housed in the battery housing section so that both end terminals of the secondary batteries will be exposed to outside through the terminal openings. Each modular casing half is provided with bottomed adhesive charging openings in register with the respective terminal openings and adhesive efflux opening parts communicating with the terminal openings and with the adhesive charging openings. An adhesive charged through the adhesive charging openings is affixed to the outer periphery of the secondary batteries through the adhesive efflux opening parts to cement the ends of the secondary batteries to the terminal openings.

Battery device loaded on moving body

Rechargeable battery

A spirally coiled electrode assembly has positive and negative electrodes each including a web-like collector coated with an active material on opposite surfaces thereof, and separators disposed between the positive and negative electrodes. A plurality of rectangular leads extend from opposite sides of the web-like collectors in directions perpendicular to a direction in which the positive and negative electrodes and the separators are wound. Positive and negative terminals are connected to the rectangular leads extending from the respective opposite sides of the web-like collectors. The spirally coiled electrode assembly, the rectangular leads, and the positive and negative terminals are housed in a cylindrical casing whose opposite ends are closed by respective caps. The positive and negative terminals are fixed to the caps, respectively.

High capacity secondary battery of jelly roll type

A nonaqueous electrolytic secondary battery is formed by winding a thin-film positive electrode, a thin-film negative electrode, and a thin-film separator. A cap is arranged at the distal end portion of a pole bored through the cap and interposed between a nut and a disk-like portion of the pole through a ceramic washer being in contact with the nut and a ceramic patch being in contact with the disk-like portion. The ceramic washer and the ceramic patch consist of alumina or zirconia. For a bolt for interposing a bus bar or a conductive line to fix the bus bar or the conductive line, a female screw portion formed in the pole is arranged in a space of a spindle.

Secondary battery

A nonaqueous electrolytic secondary battery has a seal whose transparency and permeability with respect to external gas or moisture can be suppressed to a low level and which has high reliability. The nonaqueous electrolytic secondary battery has an electrolytic solution injection port (32) for injecting a nonaqueous electrolytic solution and an expansion plug (4) for air-tightly sealing the electrolytic solution injection port. A metal seal (2) is arranged between the electrolytic solution injection port (32) and the expansion plug (4). The metal seal (2) is of a metal containing aluminum as a main component, or a stainless steel, and the expansion plug (4) is of stainless steel.

Growing community of inventors

Fukushima, Japan

Hideya Takahashi