Abstract: Bioassay equipment which prevents a variation in concentration of a medium or deposition/bonding of a substance in the medium to be caused by drying of the medium being stored or held in a reaction region providing an inter-substance interaction field. The bioassay equipment (2) comprises at least a means for supplying a medium containing a substance pertaining to the interaction to the reaction region R providing the field of inter-substance interaction such as hybridization, and a means for supplying required water automatically. The bioassay equipment (2) may comprises a means for automatically detecting the volume of the medium held in the reaction region R.

Abstract: 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 13, a large number of secondary batteries 12 housed in the modular casing 13, plural cell control units 14 and an exterior casing 11 accommodating the modular casing 13. The modular casing 13 has an inner casing member 26 and an outer casing member 27 and has a large number of terminal openings 29, 42 opened in it. The secondary batteries 12 are housed in the modular casing 13 via the terminal openings 29, 42 so that positive terminal 12a and negative terminal 12b 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.

Abstract: 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 13 having a battery housing section 45 in its inside and a large number of terminal openings 46, 47, an outer casing member 11 for housing the modular casing 13 in an accommodating space section 11a, and a large number of secondary batteries 12 housed in the battery housing section 45 so that terminal sections 12a, 12b are exposed to outside through terminal openings 46, 47. The secondary batteries 12 are connected in series with one another. The modular casing 13 is housed in the outer casing member 11 with a gap p between facing outer and inner peripheries with the interposition of mounting portions 54, 65.

Abstract: 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 43, 44 having battery housing half sections 49, 64 and a large number of terminal openings 46, 47 communicating with the battery housing half sections are coupled to each other to constitute a modular casing 13 having a battery housing section 45. A large number of secondary batteries 12 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 72 in register with the respective terminal openings and adhesive efflux opening parts 78 communicating with the terminal openings and with the adhesive charging openings.

Abstract: A rectangular battery is disclosed. The rectangular battery includes a plurality of cathode plates and anode plates alternately superposed via a separator to face each other. The cathode plates and the anode plates are consecutively packed with the separator, the packed cathode plates or anode plates being folded at a separator fusing portion between the cathode plates or anode plates.

Abstract: A sealed battery including a safety valve made of a metal plate which can be deformed by the increase of the inner pressure of the battery, and current cutting-off means which is actuated by the deformation of the safety valve, wherein the safety valve has a safety valve projection provided at its center to project toward an electric power generating element of the battery, a disk having a central aperture in which the safety valve projection is inserted and gas apertures through which gas is passed is fixed between the safety valve and the electric power generating element, a thin metal plate to which one of the leads of the electric power generating element is connected is attached to the element side of the disk to close the central aperture, and the safety valve projection is welded to the thin metal plate through the central aperture.