Abstract: A control apparatus controls a charging device that is connected to a secondary battery having a negative electrode which is a mixture of graphite and silicon monoxide and supplies a current to the secondary battery, wherein when a calculated SOC (State of Charge) of the secondary battery is less than 15%, a magnitude of the current supplied to the secondary battery by the charging device is controlled to a first value, and when the calculated SOC of the secondary battery is equal to or more than 15%, the magnitude of the current supplied to the secondary battery by the charging device is controlled to a second value that is larger than the first value.

Abstract: Provided is an electrode for lithium secondary battery that has a large retaining amount of an electrolyte and high output, and simultaneously, secures a volume density and suppresses a decrease in an electron conductivity. The electrode for lithium secondary battery of the present invention includes an electrode foil and a mixture layer disposed in the electrode foil. The mixture layer has an active material. The mixture layer has an inner layer 54 disposed in the electrode foil and a surface layer 55 positioned on a surface side in a thickness direction of the mixture layer with respect to the inner layer 54. The inner layer 54 has a higher average void ratio than the surface layer 55. The inner layer 54 has an intermediate layer 542 having a lower void ratio than both sides in a halfway position in a thickness direction of the inner layer 54.

Abstract: A battery pack provided with a plurality of battery cells, the battery pack making it possible to achieve higher safety than before during handling work. The battery pack is provided with a battery group in which the plurality of battery cells are stacked, and a housing in which the battery group is accommodated. The housing, with respect to a first direction and a second direction perpendicular to a height direction of the housing and to each other, has a dimension in the first direction which is made smaller than a dimension in the second direction. The battery group is eccentrically located on one side in the first direction in the housing.

Abstract: A battery pack provided with a plurality of battery cells, the battery pack making it possible to achieve higher safety than before during handling work. The battery pack is provided with a battery group in which the plurality of battery cells are stacked, and a housing in which the battery group is accommodated. The housing, with respect to a first direction and a second direction perpendicular to a height direction of the housing and to each other, has a dimension in the first direction which is made smaller than a dimension in the second direction. The battery group is eccentrically located on one side in the first direction in the housing.

Abstract: A battery pack provided with a plurality of battery cells, the battery pack making it possible to achieve higher safety than before during handling work. The battery pack is provided with a battery group in which the plurality of battery cells are stacked, and a housing in which the battery group is accommodated. The housing, with respect to a first direction and a second direction perpendicular to a height direction of the housing and to each other, has a dimension in the first direction which is made smaller than a dimension in the second direction. The battery group is eccentrically located on one side in the first direction in the housing.