Vehicle

Abstract

A vehicle includes a motor, a driving device, and a cooling device. The motor includes a motor main body and a winding switching unit. The motor main body includes windings and a first coolant channel to cool said windings. The winding switching unit is disposed on an outer surface of said motor main body and includes heat-generating components and a second coolant channel. The heat-generating components are used to switch said windings. The second coolant channel is to cool said heat-generating components. The driving device is configured to control switching of said winding switching unit and configured to apply driving voltage to said windings, the drive device including a third coolant channel. The cooling device is to cool coolant that flows through said first coolant channel, said second coolant channel and said third coolant channel.

What is claimed is: 
     
         1 . A vehicle comprising:
 a motor comprising:
 a motor main body including windings and a first coolant channel to cool said windings; and 
 a winding switching unit disposed on an outer surface of said motor main body and comprising:
 heat-generating components used to switch said windings; and 
 a second coolant channel to cool said heat-generating components; 
 
   a driving device configured to control switching of said winding switching unit and configured to apply driving voltage to said windings, the drive device including a third coolant channel; and   a cooling device to cool coolant that flows through said first coolant channel, said second coolant channel and said third coolant channel   
     
     
         2 . The vehicle according to  claim 1 , wherein
 the coolant cooled by said cooling device flows through said first coolant channel and said second coolant channel via said third coolant channel and then flows into said cooling device again.   
     
     
         3 . The vehicle according to  claim 1 , wherein
 a part of the coolant cooled by said cooling device flows into said cooling device again after flowing through said first coolant channel and said second coolant channel, and   another part of the coolant cooled by said cooling device flows into said cooling device again after flowing through said third coolant channel.   
     
     
         4 . The vehicle according to  claim 1 , wherein
 said motor main body includes
 a motor housing inside which said first coolant channel is formed, and 
 a stator having said windings and fixed to an inner surface of said motor housing, 
   said winding switching unit includes
 a winding switching housing inside which said second coolant channel is formed and which is disposed on an outer surface of said motor housing, and 
 said heat-generating components disposed at an outer surface of said winding switching housing. 
   
     
     
         5 . The vehicle according to  claim 4 , wherein
 one end of said first coolant channel is disposed on the outer surface of said motor housing, the outer surface of said motor housing facing an exterior of said motor,   one end of said second coolant channel is disposed on the outer surface of said winding switching housing, the outer surface of said winding switching housing facing an exterior of said motor, and   another end of said first coolant channel and another end of said second coolant channel are connected to each other.   
     
     
         6 . The vehicle according to  claim 4 , wherein
 said second coolant channel branches off in an interior of said winding switching housing,   a first end and a second end of said second coolant channel are disposed on the outer surface of said winding switching housing, the outer surface of said winding switching housing facing an exterior of said motor,   a third end of said second coolant channel is disposed on a contact part of said winding switching housing, the contact part being in contact with said motor housing,   one end of said first coolant channel is disposed on a contact part of said motor housing, the contact part of said motor housing being in contact with said winding switching housing and coupled with said third end of said second coolant channel, and   another end of said first coolant channel is disposed on the outer surface of said motor housing, the outer surface of said motor housing facing an exterior of said motor.   
     
     
         7 . The vehicle according to  claim 4 , wherein
 said first coolant channel branches off in an interior of said motor housing,   a first end and a second end of said first coolant channel are disposed on the outer surface of said motor housing, the outer surface of said motor housing facing an exterior of said motor,   a third end of said first coolant channel is disposed on a contact part of said motor housing, the contact part of said motor housing being in contact with said winding switching housing,   one end of said second coolant channel is disposed on the outer surface of said winding switching housing, the outer surface of said winding switching housing facing an exterior of said motor, and   another end of said second coolant channel is disposed on a contact part of said winding switching housing, the contact part of said winding switching housing being in contact with said motor housing and coupled with said third end of said first coolant channel   
     
     
         8 . The vehicle according to  claim 4 , wherein
 one end and another end of said first coolant channel are disposed on the outer surface of said motor housing, the outer surface of said motor housing facing an exterior of said motor, and   one end and another end of said second coolant channel are disposed on the outer surface of said winding switching housing, the outer surface of said winding switching housing facing an exterior of said motor.