Thermal management system

Abstract

A thermal management system includes a compressor, a first heat exchanger, a first throttling device, a second heat exchanger, a third heat exchanger, a fourth heat exchanger and an air-conditioning box. The third heat exchanger includes a first heat exchange portion for circulating a refrigerant and a second heat exchange portion for circulating a coolant. The thermal management system includes a cooling mode. In the cooling mode, an outlet of the compressor, the first heat exchange portion, the first heat exchanger, the first throttling device, the second heat exchanger and an inlet of the compressor are in communication to form a first refrigerant loop; the second heat exchange portion and the fourth heat exchanger are in communication to form a coolant loop; and the coolant in the second heat exchange portion is capable of absorbing heat of the refrigerant in the first heat exchange portion.

1 . A thermal management system, comprising: a compressor, a first heat exchanger, a first throttling device, a second heat exchanger, a third heat exchanger, a fourth heat exchanger and an air-conditioning box, the third heat exchanger comprising a first heat exchange portion for circulating a refrigerant and a second heat exchange portion for circulating a coolant;
 wherein the thermal management system comprises a cooling mode; in the cooling mode, an outlet of the compressor, the first heat exchange portion, the first heat exchanger, the first throttling device, the second heat exchanger and an inlet of the compressor are in communication to form a first refrigerant loop; the second heat exchange portion and the fourth heat exchanger are in communication to form a coolant loop; and the coolant in the second heat exchange portion is capable of absorbing heat of the refrigerant in the first heat exchange portion; and   wherein the fourth heat exchanger is located outside the air-conditioning box.   
     
     
         2 . The thermal management system according to  claim 1 , further comprising a first fan located outside the air-conditioning box, the first heat exchanger and the fourth heat exchanger sharing the first fan for heat dissipation. 
     
     
         3 . The thermal management system according to  claim 1 , further comprising a fifth heat exchanger, the fifth heat exchanger comprising a third heat exchange portion and a fourth heat exchange portion capable of exchanging heat with the third heat exchange portion; wherein
 in the cooling mode, the outlet of the compressor, the first heat exchange portion, the first heat exchanger, the third heat exchange portion, the first throttling device, the second heat exchanger, the fourth heat exchange portion and the inlet of the compressor are in communication to form the first refrigerant loop.   
     
     
         4 . The thermal management system according to  claim 1 , further comprising a second throttling device and a sixth heat exchanger, the sixth heat exchanger being located in the air-conditioning box;
 wherein the thermal management system further comprises a heating mode; in the heating mode, the outlet of the compressor, the first heat exchange portion, the sixth heat exchanger, the second throttling device, the first heat exchanger and the inlet of the compressor are in communication to form a second refrigerant loop.   
     
     
         5 . The thermal management system according to  claim 1 , further comprising a fifth heat exchanger, a second throttling device and a sixth heat exchanger, the fifth heat exchanger comprising a third heat exchange portion and a fourth heat exchange portion capable of exchanging heat with the third heat exchange portion, the sixth heat exchanger being located in the air-conditioning box;
 wherein the thermal management system further comprises a heating and dehumidifying mode; and   wherein in the heating and dehumidifying mode, the outlet of the compressor, the first heat exchange portion, the sixth heat exchanger, the second throttling device, the third heat exchange portion, the first heat exchanger, the fourth heat exchange portion and the inlet of the compressor are in communication to form the second refrigerant loop; and the outlet of the compressor, the first heat exchange portion, the sixth heat exchanger, the first throttling device, the second heat exchanger, the fourth heat exchange portion and the inlet of the compressor are in communication to form a third refrigerant loop.   
     
     
         6 . The thermal management system according to  claim 5 , further comprising a four-way valve, the four-way valve having a first port, a second port, a third port and a fourth port;
 wherein the first heat exchange portion comprises a first inlet and a first outlet; the first heat exchanger comprises a first connection port and a second connection port; the second heat exchanger comprises a third connection port and a fourth connection port; the sixth heat exchanger comprises a fifth connection port and a sixth connection port; the third heat exchange portion comprises a seventh connection port and an eighth connection port; and   wherein the first inlet is in communication with the outlet of the compressor; the first outlet is in communication with the fifth connection port; the first port is in communication with the sixth connection port; the second port is in communication with the first connection port; the second connection port is in communication with the seventh connection port; the eighth connection port is in communication with one end of the second throttling device; the third port is in communication with the other end of the second throttling device and in communication with one end of the first throttling device; the third connection port is in communication with the other end of the first throttling device; and the fourth connection port and the fourth port are in communication with the inlet of the compressor through the fourth heat exchange portion.   
     
     
         7 . The thermal management system according to  claim 6 , further comprising a shut-off valve, one end of the shut-off valve being in communication with the first outlet and being in communication with the fifth connection port, the other end of the shut-off valve being in communication with the first port and being in communication with the sixth connection port. 
     
     
         8 . The thermal management system according to  claim 7 , wherein in the cooling mode, the shut-off valve is opened; and in the heating and dehumidifying mode, the shut-off valve is closed. 
     
     
         9 . The thermal management system according to  claim 6 , further comprising a gas-liquid separator, the fourth connection port and the fourth port being in communication with an inlet of the gas-liquid separator, an outlet of the gas-liquid separator being in communication with the fourth heat exchange portion. 
     
     
         10 . The thermal management system according to  claim 4 , further comprising a check valve, the check valve being disposed in parallel with the second throttling device. 
     
     
         11 . The thermal management system according to  claim 10 , wherein in the cooling mode, the check valve is opened and the second throttling device is closed; and in the heating mode, the check valve is closed and the second throttling device is opened. 
     
     
         12 . The thermal management system according to  claim 1 , further comprising a first branch which is disposed in parallel with the third heat exchanger, the first branch being provided with a control valve. 
     
     
         13 . The thermal management system according to  claim 12 , wherein in the cooling mode, the control valve is closed. 
     
     
         14 . The thermal management system according to  claim 1 , further comprising a pump device and a functional component that requires heat dissipation, the pump device and the functional component being disposed in the coolant loop. 
     
     
         15 . A thermal management system, comprising: an air-conditioning box, a compressor, a first heat exchanger, a first throttling device, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, and a power device to make a coolant flow; the first heat exchanger and the fourth heat exchanger being located outside the air-conditioning box, the second heat exchanger being located in the air-conditioning box, the third heat exchanger comprising a first heat exchange portion for circulating a refrigerant and a second heat exchange portion for circulating the coolant;
 wherein the thermal management system comprises a cooling mode; in the cooling mode, an outlet of the compressor, the first heat exchange portion, the first heat exchanger, the first throttling device, the second heat exchanger and an inlet of the compressor are in communication to form a first refrigerant loop; and   wherein the power device, the second heat exchange portion and the fourth heat exchanger are in communication to form a coolant loop; and the coolant in the second heat exchange portion is capable of exchanging heat with the refrigerant in the first heat exchange portion in order to cool down the refrigerant in the first heat exchange portion.   
     
     
         16 . The thermal management system according to  claim 15 , further comprising a fifth heat exchanger, the fifth heat exchanger comprising a third heat exchange portion and a fourth heat exchange portion capable of exchanging heat with the third heat exchange portion;
 wherein in the cooling mode, the outlet of the compressor, the first heat exchange portion, the first heat exchanger, the third heat exchange portion, the first throttling device, the second heat exchanger, the fourth heat exchange portion and the inlet of the compressor are in communication to form the first refrigerant loop.   
     
     
         17 . The thermal management system according to  claim 15 , further comprising a second throttling device and a sixth heat exchanger, the sixth heat exchanger being located in the air-conditioning box;
 wherein the thermal management system further comprises a heating mode; in the heating mode, the outlet of the compressor, the first heat exchange portion, the sixth heat exchanger, the second throttling device, the first heat exchanger and the inlet of the compressor are in communication to form a second refrigerant loop.   
     
     
         18 . The thermal management system according to  claim 15 , further comprising a fifth heat exchanger, a second throttling device and a sixth heat exchanger, the fifth heat exchanger comprising a third heat exchange portion and a fourth heat exchange portion capable of exchanging heat with the third heat exchange portion, the sixth heat exchanger being located in the air-conditioning box;
 wherein the thermal management system further comprises a heating and dehumidifying mode; and   wherein in the heating and dehumidifying mode, the outlet of the compressor, the first heat exchange portion, the sixth heat exchanger, the second throttling device, the third heat exchange portion, the first heat exchanger, the fourth heat exchange portion and the inlet of the compressor are in communication to form the second refrigerant loop; and the outlet of the compressor, the first heat exchange portion, the sixth heat exchanger, the first throttling device, the second heat exchanger, the fourth heat exchange portion and the inlet of the compressor are in communication to form a third refrigerant loop.   
     
     
         19 . The thermal management system according to  claim 15 , wherein the coolant loop comprises a functional component that requires heat dissipation, and the functional component comprises a motor and/or a battery. 
     
     
         20 . The thermal management system according to  claim 15 , wherein the third heat exchanger comprises a first collecting member, a second collecting member, a heat exchange tube and a casing; two ends of the heat exchange tube are fixedly connected to the first collecting member and the second collecting member, respectively; each of the first collecting member and the second collecting member defines a collecting cavity, the collecting cavity is in communication with a tube cavity of the heat exchange tube to circulate the refrigerant; the casing is hermetically connected to the first collecting member and the second collecting member to enclose a heat exchange cavity; the casing further comprises an inlet pipe and an outlet pipe, and the inlet pipe and the outlet pipe are in communication with the heat exchange cavity to circulate the coolant.