Vehicular storage battery device

The present invention provides a vehicular storage battery device which releases heat generated by repeated electrical charging and discharging. The vehicular storage device (10) comprises: a housing (12); a plurality of battery boxes (14), provided inside the housing, for accommodating unit batteries to serve as a power source for the vehicle, and having heat transporting parts for transporting heat generated inside the battery boxes outside of the battery boxes; and a shared cooling channel (16), provided inside the housing, and having an inlet (16a) for taking in fluids and an outlet (16b) for discharging fluids that have passed through the inside of the channel, wherein the inlet and the outlet open in a direction different from the direction in which the vehicle travels, and the heat transporting parts of the plurality of battery boxes are each exposed inside the channel. 本发明提供种车辆用蓄电池装置，其排出反复充放电而生成的热。车辆用蓄电池装置(10)具备：壳体(12)；多个电池箱(14)，配置在壳体的内部，收纳构成车辆电源的单电池，且具有将在电池箱的内部生成的热传输到电池箱的外部的传热部；以及共同冷却流路(16)，配置在壳体的内部，