To make a battery adaptable favorably to the high-temperature condition of the external environment and also facilitate the confirmation of the degraded performance of the battery by enabling the observation of the internal environment of the battery unit.
The battery 34 is surrounded with a cover 33m as a heat conduction lowering means into one unit to produce the battery unit 33a. The battery unit 33a is provided with an environment observing device for observing the internal environment of the battery unit 33a while frame bodies of a battery unit housing part 33 and a housing case 33b of the battery device 3 are provided respectively with window parts 40 and 33b1 made of a transparent resin material, for instance, that enables the recognition of the display of LEDs 39a and 39b on a shape observing device from outside.
WATANABE KATSUJI
AONO SUSUMU
NAGAMI HIROYUKI
KUBOTA TETSUMARU
HANDA KEIJI
TOKUNAGA KOKI
| JPH07100104A | 1995-04-18 | |||
| JP2003116781A | 2003-04-22 | |||
| JP2000310739A | 2000-11-07 | |||
| JP2003187878A | 2003-07-04 | |||
| JP2000137171A | 2000-05-16 | |||
| JP2001157368A | 2001-06-08 | |||
| JP2003135395A | 2003-05-13 | |||
| JP2003243047A | 2003-08-29 |