Vehicle heat management system

Abstract

A vehicle heat management system includes a refrigerant circuit, a battery temperature regulation circuit, and an electric part cooling circuit. The refrigerant circuit circulates a refrigerant to regulate a temperature inside a passenger compartment through the refrigerant circuit. The battery temperature regulation circuit regulates a temperature of a battery by introducing a liquid that exchanges heat with the refrigerant to the battery. The electric part cooling circuit circulates a liquid cooled by a radiator circulates through the electric part cooling circuit, and is capable of cooling a first and second pieces for driving a vehicle. In a first mode, the liquid cooled by the radiator cools the first piece of equipment, the refrigerant of the refrigerant circuit cools the second piece of equipment, and the liquid which has exchanged heat with the refrigerant is introduced in parallel to the battery and the second piece of equipment.

1 . A vehicle heat management system comprising:
 a refrigerant circuit configured to circulate a refrigerant to regulate a temperature inside a passenger compartment therethgrough;   a battery temperature regulation circuit configured to regulate a temperature of a battery by introducing a liquid that exchanges heat with the refrigerant to the battery; and   an electric part cooling circuit configured to circulate a liquid cooled by a radiator therethgrough, the electric part cooling circuit being capable of cooling a first piece of equipment and a second piece of equipment for driving a vehicle, wherein   in a first mode, the liquid cooled by the radiator cools the first piece of equipment, the refrigerant of the refrigerant circuit cools the second piece of equipment, and the liquid which has exchanged heat with the refrigerant is introduced in parallel to the battery and the second piece of equipment.   
     
     
         2 . The vehicle heat management system according to  claim 1 , wherein
 the battery temperature regulation circuit comprises a branch, and   the liquid which has exchanged heat with the refrigerant is divided at the branch and introduced to each of the battery and the second piece of equipment.   
     
     
         3 . The vehicle heat management system according to  claim 2 , further comprising:
 a first bypass channel that branches from the battery temperature regulation circuit at the branch and is configured to be coupled to the second piece of equipment; and   a water pump disposed in the first bypass channel, wherein   the liquid flowing from the branch to the first bypass channel by an operation of the water pump is introduced to the second piece of equipment.   
     
     
         4 . The vehicle heat management system according to  claim 3 , further comprising:
 a second bypass channel configured to return the liquid introduced to the second piece of equipment back to the battery temperature regulation circuit, wherein   the battery temperature regulation circuit comprises:
 a control valve provided on a downstream side of a coupling between the second bypass channel and the battery temperature regulation circuit; and 
 a heat exchanger provided downstream of the control valve and configured to exchange heat with the refrigerant, 
   the branch is provided on a downstream side of the heat exchanger, and   in the first mode, by opening the control valve, the liquid flowing out from the battery passes through the first bypass channel and is introduced to the second piece of equipment.   
     
     
         5 . The vehicle heat management system according to  claim 1 , wherein
 in a second mode, the liquid cooled by the radiator cools the first piece of equipment, the refrigerant of the refrigerant circuit cools the second piece of equipment, and the liquid which has exchanged heat with the refrigerant is introduced in series to the battery and the second piece of equipment.   
     
     
         6 . The vehicle heat management system according to  claim 5 , wherein
 in the second mode, the liquid which has exchanged heat with the refrigerant is introduced to the battery, and the liquid flowing out from the battery is introduced to the second piece of equipment.   
     
     
         7 . The vehicle heat management system according to  claim 6 , further comprising:
 a first bypass channel configured to introduce the liquid of the battery temperature regulation circuit to the second piece of equipment; and   a second bypass channel configured to return the liquid flowing out from the second piece of equipment back to the battery temperature regulation circuit, wherein   the battery temperature regulation circuit comprises:
 a control valve provided between a first coupling of the first bypass channel and the battery temperature regulation circuit; and 
 a second coupling of the second bypass channel and the battery temperature regulation circuit, and a heat exchanger that is provided downstream of the second coupling and that is configured to exchange heat with the refrigerant, and 
   in the second mode, by closing the control valve, the liquid flowing out from the battery passes through the first bypass channel and is introduced to the second piece of equipment.