To provide an electric motor unit that can control the flow of cooling air flowing above the outer surface of an electric motor, a method for controlling the flow of cooling air, and a self-propelled electric vehicle with the electric motor.SOLUTION: A self-propelled electric vehicle 100 is configured such that an electric motor unit 120 is attached to a frame 101 supporting front wheels 103 and rear wheels 108. The electric motor unit 120 is provided with an electric motor 121, a liquid feeding pump 140, a radiator 141, and a fan 143. A cooling flow passage 126 and a coolant chamber 127 through which coolant is circulated are formed in a housing 124 of the electric motor 121 and the liquid feeding pump 140 and a coolant external pipe 144 are disposed in an exposed state in the housing. A first flow restriction portion 145a through which cooling air W output from the fan 143 is guided to the liquid feeding pump 140 and a second flow restriction portion 145b by which the flow to an open/close cap 127a is inhibited are formed in the coolant external pipe 144.SELECTED DRAWING: Figure 2
【課題】電動機の外表面上を流れる冷却風の流れを制御することができる電動機ユニット、冷却風の流れの制御方法および電動機ユニットを搭載した自走式電動車両を提供する。【解決手段】自走式電動車両100は、前輪103および後輪108を支持するフレーム101に電動機ユニット120が取り付けられている。電動機ユニット120は、電動機121、送液ポンプ140,ラジエター141および送風機143を備えている。電動機121のハウジング124には、冷却液が流通する冷却流路126および冷却液室127が形成されるとともに送液ポンプ140および冷却液外部配管144が露出した状態で設けられている。冷却液外部配管144には、送風機143が出力する冷却風Wを送液ポンプ140に導く第1流路規制部145aおよび開閉キャップ127aへの流れを阻止する第2流路規制部145bが形成されている。【選択図】 図2
ELECTRIC MOTOR UNIT, METHOD FOR CONTROLLING FLOW OF COOLING AIR, AND SELF-PROPELLED ELECTRIC VEHICLE
電動機ユニット、冷却風の流れの制御方法および自走式電動車両
2023-05-26
Patent
Elektronische Ressource
Japanisch
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