Abstract: A battery pack according to one aspect of the present technology includes one or a plurality of batteries, one or a plurality of heat absorbing members adjacent to the one or the plurality of batteries, and an exterior case that accommodates the one or the plurality of batteries and the one or the plurality of heat absorbing members. The heat absorbing member includes a thermally irreversible solid material containing water and a packaging case covering the solid material.

Abstract: A battery pack is provided according to an aspect of the present technology and includes a plurality of secondary batteries, a tab that electrically connects the plurality of secondary batteries, and a heat absorbing member in which a heat absorbing agent is encapsulated in an insulating container. The heat absorbing member is provided between the secondary battery and the tab and in at least a part of a peripheral region of a connection portion between the secondary battery and the tab.

Abstract: A battery pack includes a plurality of batteries, an isolating member that is arranged among the plurality of batteries and isolates the plurality of batteries from each other, and a heat absorbing agent that is housed inside the isolating member and cools the plurality of batteries. The isolating member includes a housing portion that is arranged among the plurality of batteries and houses a heat absorbing agent inside, and a heat conduction part that is arranged between the housing portion and each of the plurality of batteries and has a thermal conductivity higher than a thermal conductivity of the housing portion.

Abstract: In a battery pack, a battery and a circuit board are appropriately connected. Provided is a battery pack including: an exterior case; a circuit board; a battery including a metal exterior can; and a metal member electrically connecting the battery and the circuit board, where an electrode part is provided on at least one end side of the battery, the circuit board and the electrode part are disposed to face each other, the metal member includes a board connection connected to the circuit board, an electrode connection connected to the electrode part, and a side part, the board connection is disposed to face the electrode connection with the side part interposed therebetween, and the board connection, the side part, and the electrode connection are integrally formed.

Abstract: Provided is a battery pack which has excellent battery characteristics and excellent reliability. The battery pack includes at least a battery cell and a holder, where the battery cell is configured to be accommodated in the holder, the holder includes a plate-shaped member having a first placement surface with the battery cell placed thereon, and a first side surface member and a second side surface member that are substantially perpendicular to the first placement surface and extend to the side with the battery cell, where the first side surface member and the second side surface member are larger in length extending to the side with the battery cell than the battery cell in a direction substantially perpendicular to the first placement surface.