BATTERY PACK

摘要

PROBLEM TO BE SOLVED: To provide a battery pack composed of plural unit cells capable of operating at temperatures above room temperature, which can keep the internal temperature of each unit cell uniform and furthermore can raise the temperature of each unit cell to an operating temperature quickly and also reduce the whole size of the battery accommodated in a heat insulated container to make it compact.

SOLUTION: Inside an enclosure 2 as a heat insulated container constituting a battery pack 10 are accommodated nine pieces of a flat shaped unit battery pack 1 which are laminated in the thickness direction thereof. The unit battery packs 1 themselves are arranged in such a way that unit cells as the constituent elements thereof are stuck fast to each other's side faces to compose the whole battery pack 10. A heater 3 for heating the unit battery packs 1 is placed in between adjacent unit battery packs 1 in such a way that the wide face thereof is in contact with the wide faces of the unit battery packs 1.

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