Battery cooling structure of hybrid industrial vehicle

摘要

An object of the present invention is to provide a battery cooling structure of a hybrid industrial vehicle such as a hybrid forklift, the battery cooling structure being capable of sufficiently cooling a battery and also of eliminating the possibility that the battery receives heat from its peripheral devices. To achieve the object, a second cooling air flow passage (35) for battery is provided separately from a first cooling air flow passage (31) in which a radiator (32) is disposed. A battery pack 26 or a battery is disposed in the second cooling air flow passage (35). The second cooling air flow passage (35) is connected to the first cooling air flow passage (31) at a position upstream of a cooling fan (33) disposed in the first cooling air flow passage (31), so that the cooling fan (33) sucks cooling air in the first cooling air flow passage (31) and also sucks cooling air in the second cooling air flow passage (35).

主权项

1. A battery cooling structure of a hybrid industrial vehicle including an engine and an electric motor as its drive sources and also including a battery or a battery pack to store electric power, the battery cooling structure comprising:
a first cooling air flow passage through which cooling air having cooled the engine and the electric motor flows and in which a radiator and a cooling fan to cool engine cooling water with the cooling air are disposed; a second cooling air flow passage for the battery or the battery pack is provided separately from the first cooling air flow passage, wherein the battery or the battery pack is disposed in the second cooling air flow passage, the second cooling air flow passage is coupled to the first cooling air flow passage at a position upstream of the cooling fan disposed in the first cooling air flow passage, so that the cooling fan sucks cooling air in the first cooling air flow passage and also sucks cooling air in the second cooling air flow passage, and the cooling fan discharges the cooling air sucked into the first cooling air flow passage and the cooling air sucked into the second cooling air flow passage, through an air outlet of the first cooling air flow passage, and the first cooling air flow passage, the engine and the electric motor are disposed upstream of the radiator and the cooling fan in the flow direction of the cooling air.