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 semiconductor device of the present invention includes an internal circuit within the voltage is pulled down, and two voltage converting circuits for pulling down the external supply voltage. One of the voltage converting circuits supplies a pulled-down voltage to the internal circuit during the normal operation, while the other of the voltage converting circuits operates under a signal from a control circuit, which monitors the voltage level at an external terminal, so as to supply the voltage pulled down from the voltage at the external terminal to the internal circuit. A reliability test, such as burn-in, may be conducted by simply supplying a higher voltage to the external terminal.

Abstract: The invention relates to a voltage supply circuit used in a semiconductor integrated circuit wherein switching between voltages generated is carried out in dependency upon whether the circuit is in an ordinary operating state or in a standby state. This voltage supply circuit includes a first reference voltage generator for supplying a reference voltage through an amplifier circuit to an internal circuit in the operating state, and a power supply voltage converter for supplying a voltage to the internal circuit at least in the standby state, wherein a second reference voltage generator provided independently of the first reference voltage generator becomes operative for a transient time period during which the second reference voltage generator shifts from the standby state to the operating state. By the action of the second reference voltage generator, a setup time at the time of start of the operation is shortened.