Patent ID: 9112249
Filing Date: 2015-08-18
Classification: H01M,Y02E

Abstract:
1. A power source apparatus having a plurality of batteries of cylindrical shape arranged in a diameter direction of each battery within a case, comprising: a holding member holding the plurality of batteries from the diameter direction, including a plurality of opening portions each covering a part of an outer circumference surface of each battery, and dividing internal space of the case into a cooling path in which only a coolant, out of the coolant and gas discharged from a gas discharge valve of each battery, flows and a gas discharge path in which only the gas out of the coolant and the gas flows, wherein the holding member is a solid plate member conducting heat of each battery and the gas discharge valve is located in the gas discharge path, the plurality of batteries include a first battery and a second battery located downstream of the first battery in the cooling path, the plurality of opening portions include a first opening portion holding the first battery and a second opening portion holding the second battery, an area of the first battery that is held by the holding member is larger than that of the second battery, and an area of the first battery that is in contact with the coolant is smaller than that of the second battery, and a maximum length of the first opening portion in a longitudinal direction of the first battery is longer than a maximum length of the second opening portion in a longitudinal direction of the second battery.