Abstract: A battery pack includes unit cells and holders for sandwiching the unit cells. The holder includes a holding portion which holds the unit cell such that an electrode of the unit cell projects from between the holder and another holder sandwiching the unit cell, and a plurality of projecting portions which project in a direction in which the electrode projects from the holding portion and face each other across the electrode projecting from the holding portion. The projecting portion includes a passage which is formed along a direction, in which the unit cell is sandwiched, and is configured to flow fluid, and an opening which communicates with the passage and is open toward the electrode projecting from the holding portion.

Abstract: A battery pack includes unit cells and holders for sandwiching the unit cells. The holder includes a holding portion which holds the unit cell such that an electrode of the unit cell projects from between the holder and another holder sandwiching the unit cell, and a plurality of projecting portions which project in a direction in which the electrode projects from the holding portion and face each other across the electrode projecting from the holding portion. The projecting portion includes a passage which is formed along a direction, in which the unit cell is sandwiched, and is configured to flow fluid, and an opening which communicates with the passage and is open toward the electrode projecting from the holding portion.

Abstract: A temperature regulating device of an on-vehicle battery includes a battery 1 capable of being charged at a charge station 11 in a state where it is mounted on a vehicle, a battery temperature sensor 4 for detecting a battery temperature, an SOC estimation part 3a for estimating a battery SOC, an air conditioner unit 2 for regulating the battery temperature, a charge judgment part 3b for judging based on the battery SOC whether or not the battery is need to be charged, a temperature regulating part 3c for executing during-vehicle-running temperature regulating control to output a temperature control command to the air conditioner unit 2 so that the battery temperature at a charge start becomes equal to a target temperature.