Cooling structure for vehicle high-voltage electric parts

Abstract

A cooling structure for vehicle high-voltage electric parts includes an air inlet passage having an air inlet port which is disposed higher than a seat cushion of a rear seat so as to supply air from a passenger compartment to a battery unit, an inverter unit and a DC-DC converter unit and a cooling fan which causes cooling air to flow into the air inlet passage. An opening portion from which air is taken into the air inlet passage is formed inside a side seatback which is placed transversely outward of a main seatback of the rear seat.

1 . A cooling structure for vehicle high-voltage electric parts which are disposed behind a rear seat, comprising:
 an air inlet passage having an air inlet port which is disposed higher than a seat cushion of the rear seat and communicating with the high-voltage electric parts so as to supply an air inside a passenger compartment to the high-voltage electric parts to cool the high-voltage electric parts; and   a cooling fan which causes the air inside the passenger compartment to flow,   wherein an opening portion for taking in the air inside the passenger compartment into the air inlet passage is formed in a side seatback which is disposed transversely outward of a main seatback of the rear seat,   wherein the opening portion opens toward a front of a vehicle and is disposed transversely outwards than a transversely central position of the side seatback, and   wherein the opening portion is disposed so that at least part thereof is concealed by an armrest which is provided on a door lining when viewed from the front of the vehicle.   
     
     
         2 . The structure of  claim 1 , wherein a seatbelt in an unfastened state is disposed transversely inwards than the transversely central position of the side seatback 
     
     
         3 . The structure of  claim 1 , wherein a portion of the side seatback transversely inwards than the transversely central position thereof is gradually curved toward the front of the vehicle as it goes away from the main seatback, and
 wherein another portion of the side seatback transversely outwards than the transversely central position thereof substantially straightly extends.   
     
     
         4 . The structure of  claim 1 , wherein the opening portion is covered by a skin of the side seatback which has an air-permeability. 
     
     
         5 . The structure of  claim 1 , wherein the opening portion is covered by an air inlet grille having multiple air inlet holes. 
     
     
         6 . The structure of  claim 1 , wherein the side seatback has a cushion material, so that air inlet noise of the air which is taken in from the opening portion is absorbed by the cushion material. 
     
     
         7 . The structure of  claim 1 , wherein a space portion is provided between the opening portion and the air inlet port of the air inlet passage.