CN119459252A - Thermal management system and vehicle - Google Patents

Abstract

The invention discloses a thermal management system and a vehicle, wherein the thermal management system comprises an air conditioning system, a first control valve and a second control valve, wherein the air conditioning system comprises a condenser, the first control valve is communicated with a high-pressure heat exchange loop, a battery heat exchange loop, a radiator loop, a heat exchanger loop, a heating loop and a circulating loop, the first control valve is selectively communicated with one or more of the high-pressure heat exchange loop, the battery heat exchange loop, the radiator loop, the heat exchanger loop, the heating loop and the circulating loop, the air conditioning system exchanges heat with the heat exchanger loop and the heating loop, the heating loop is communicated with the condenser, one end of the second control valve is communicated with the circulating loop and the battery heat exchange loop, one end of the second control valve is communicated with the radiator loop, and the other end of the second control valve is communicated with the condenser. The flow direction of the cooling liquid is controlled by the first control valve and the second control valve, so that the flow resistance in each working mode can be reduced, the energy utilization rate is improved, and the device is suitable for platform development.

Description

Thermal management system and vehicle

Technical Field

The invention relates to the technical field of vehicle thermal management, in particular to a thermal management system and a vehicle.

Background

The pure electric heating management framework is a control system of the internal heat of the electric vehicle, and relates to a plurality of subsystems such as battery thermal management, driving motor cooling, air conditioning systems, passenger cabin temperature regulation and the like. In a pure electric vehicle, since a large amount of heat is generated when the battery works, and the performance and the service life of the battery are closely related to temperature, an efficient and intelligent thermal management architecture is very important.

In the related technology, the integrated architecture of the cooling liquid side of the pure electric thermal management system is developed from the original three-way valve and four-way valve form to the five-way valve, the eight-way valve and the nine-way valve form, but the water resistance in each working mode can be further optimized, and the energy utilization rate is also improved.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a thermal management system, which can reduce flow resistance in each working mode and improve energy utilization rate by controlling the flow direction of cooling liquid through the first control valve and the second control valve, and is suitable for platform development.

The heat management system comprises an air conditioning system and a first control valve, wherein the air conditioning system comprises a condenser, a high-pressure heat exchange loop, a battery heat exchange loop, a radiator loop, a heat exchanger loop, a heating loop and a circulating loop are communicated with the first control valve, one or more of the high-pressure heat exchange loop, the battery heat exchange loop, the radiator loop, the heat exchanger loop, a heating loop and the circulating loop are selectively communicated with the first control valve, the air conditioning system exchanges heat with the heat exchanger loop and the heating loop, and the heating loop is communicated with the condenser. And one end of the second control valve is communicated with the circulation loop and the battery heat exchange loop, the other end of the second control valve is communicated with the radiator loop, and the other end of the second control valve is communicated with the condenser.

According to the heat management system provided by the embodiment of the invention, the flow direction of the cooling liquid is controlled through the first control valve and the second control valve, so that the condition that the cooling liquid flows through parts which do not need to be subjected to temperature adjustment is reduced, the flow resistance in each working mode can be reduced, the energy utilization rate is improved, the heat management strategy is simplified, and the heat management system is suitable for platform development.

According to some embodiments of the invention, the circulation loop includes a first leg having one end in communication with the first control valve, and the thermal management system further includes a second leg having one end in communication with the battery heat exchange loop and the other end of the first leg and the other end of the second leg in communication with the second control valve.

According to some embodiments of the invention, the circulation loop comprises a third branch, one end of the third branch is communicated with the first control valve, and the other end of the third branch is communicated with the first control valve and the heating loop.

According to some embodiments of the invention, the heat exchanger loop comprises a heat exchanger, two ends of the heat exchanger loop are respectively communicated with the first control valve, and the air conditioning system is communicated with the heat exchanger.

According to some embodiments of the invention, the heating loop comprises an electric heater and a warm air core, wherein the electric heater and the warm air core are connected in series, one end of the condenser is communicated with one end of the second control valve and one end of the warm air core, and the other end of the condenser is communicated with the other end of the warm air core and the first control valve.

According to some embodiments of the invention, the air conditioning system comprises a compressor and an evaporator, the compressor, the evaporator and the condenser being connected in series with each other, the heat exchanger loop comprising a heat exchanger, the heat exchanger and the evaporator being connected in parallel with each other and in series with the condenser.

According to some embodiments of the invention, the radiator circuit comprises a radiator, one end of the radiator is communicated with the first control valve, the high-pressure heat exchange circuit comprises a motor, a motor controller and a first water pump, the motor controller and the first water pump are mutually connected in series, and the heat management system further comprises a fourth branch, one end of the fourth branch is communicated with the first control valve, and the other end of the first water pump and the fourth branch are communicated.

According to some embodiments of the invention, the heat exchanger loop comprises a heat exchanger, one end of the heat exchanger is communicated with the first control valve, the battery heat exchange loop comprises a second water pump and a battery pack, the second water pump and the battery pack are connected in series, one end of the second water pump is communicated with the first control valve, and the thermal management system further comprises a fifth branch, one end of the fifth branch is communicated with the first control valve, and the battery pack and the heat exchanger are connected in parallel and communicated with the other end of the fifth branch.

According to some embodiments of the invention, the thermal management system further comprises a water overflow tank and a four-way pipe in communication with the radiator circuit, the first control valve, the high pressure heat exchange circuit, and the water overflow tank, respectively.

A vehicle according to an embodiment of the second aspect of the invention comprises the thermal management system.

The embodiment of the invention has the beneficial effects that the flow direction of the cooling liquid is controlled through the first control valve and the second control valve, the condition that the cooling liquid flows through parts which do not need to be subjected to temperature regulation is reduced, the flow resistance in each working mode can be reduced, the energy utilization rate is improved, the thermal management strategy is simplified, and the device is suitable for platform development.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a thermal management system according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a thermal management system according to an embodiment of the present invention in mode one;

FIG. 3 is a schematic diagram of a thermal management system operating mode two according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a thermal management system operating mode three according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a thermal management system operating mode four according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a thermal management system operating mode five according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a thermal management system operating mode six according to an embodiment of the invention.

Reference numerals:

100. A thermal management system;

10. 11, a compressor, 12, an evaporator;

20. A high pressure heat exchange circuit; 21, a motor, 22, a motor controller, 23, a first water pump;

30. A battery heat exchange loop; 31, a second water pump, 32, a battery pack;

40. a radiator loop 41, a radiator;

50. 51, heat exchanger;

60. heating loop, 61, condenser, 62, electric heater, 63, warm air core, 64, third water pump;

70. A circulation loop; 71, a first branch, 72, a second branch, 73, a third branch, 74 and a one-way valve;

81. The system comprises a first control valve 82, a second control valve 83, a fourth branch, a 84, a fifth branch, an overflow tank 85, a four-way pipe 86 and a valve.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

A thermal management system 100 according to an embodiment of the present invention is described below with reference to fig. 1-7, and a vehicle is also presented.

Referring to fig. 1, a thermal management system 100 according to an embodiment of the present invention includes an air conditioning system 10, a first control valve 81, and a second control valve 82.

Air conditioning system 10 the air conditioning system 10 comprises a condenser 61.

The first control valve 81 is connected to the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, the heating circuit 60 and the circulation circuit 70, the first control valve 81 is selectively connected to one or more of the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, the heating circuit 60 and the circulation circuit 70, the air conditioning system 10 exchanges heat with the heat exchanger circuit 50 and the heating circuit 60, and the heating circuit 60 is connected to the condenser 61.

In this way, the heat in the high-pressure heat exchange loop 20, the battery heat exchange loop 30, the radiator loop 40, the heat exchanger loop 50, the heating loop 60 and the circulation loop 70 can circulate through the first control valve 81, and under the control of the whole vehicle controller, different working modes can be flexibly selected under different vehicle scenes according to the circulation of the heat management modes of the vehicle between different loops or devices, so that the same heat source is prevented from being frequently used, and the heat management efficiency of the system is improved.

The thermal management system 100 uses the first control valve 81 to control a plurality of loops, and each loop does not interfere with each other but can exchange heat with each other through the first control valve 81, so that the condition that the thermal management system flows through parts which do not need to be subjected to temperature adjustment in a certain working mode can be avoided, heat loss is reduced, flow resistance in various modes is reduced, and energy utilization rate is improved. And the space in the vehicle is saved, and more possibility is provided for carrying the subsequent new functions and new technologies.

Specifically, the first control valve 81 may be a nine-way valve, in which refrigerant flows in the air conditioning system 10, and the coolant flows in the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, the heating circuit 60, and the circulation circuit 70. Further, the first control valve 81 includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, a seventh valve port, an eighth valve port, and a ninth valve port, "a", "b", "c", "d", "e", "f", "g", "h", and "i" in fig. 1, respectively.

One end of the second control valve 82 communicates with the circulation circuit 70 and the battery heat exchange circuit 30, and the other end of the second control valve 82 communicates with the radiator circuit 40, and the other end of the second control valve 82 communicates with the condenser 61. Specifically, the second control valve 82 includes a tenth valve port, an eleventh valve port, and a twelfth valve port, the tenth valve port being in communication with the circulation circuit 70 and the battery heat exchange circuit 30, the eleventh valve port being in communication with the condenser 61, the twelfth valve port being in communication with the radiator circuit 40. Wherein the tenth valve port is "j" in fig. 1, the eleventh valve port is "k" in fig. 1, and the twelfth valve port is "l" in fig. 1.

By controlling the opening and closing of the valve ports of the first control valve 81 and the second control valve 82, the flow direction of the cooling liquid can be controlled, and the proportion of the cooling liquid in different working modes can be adjusted, for example, when the passenger cabin and the battery pack 32 are heated, the heat in the radiator loop 40 and the high-pressure heat exchange loop 20 can be utilized, and the heating strategy in the double heating working condition of the passenger cabin and the battery pack 32 can be simplified by only utilizing the heat in the high-pressure heat exchange loop 20.

Specifically, the coolant absorbs ambient temperature through the radiator 41 and then absorbs heat in the high-pressure heat exchange circuit 20 to heat the passenger compartment or the battery, as described in reference to the third mode of operation, or absorbs heat in the high-pressure heat exchange circuit 20 to heat the passenger compartment or the battery pack 32, as described in reference to the fourth mode of operation.

And, realized the full-functional development of spare part thermal management through the form of first control valve 81 and second control valve 82, reduce valve body development difficulty degree, combine runner board and integrated module to use, further reduce development cost, support the platform development of pure electric vehicle type of host computer factory.

Therefore, the first control valve 81 and the second control valve 82 control the flow direction of the cooling liquid, so that the condition that the cooling liquid flows through parts which do not need to be subjected to temperature regulation is reduced, the flow resistance in each working mode can be reduced, the energy utilization rate is improved, the thermal management strategy is simplified, and the cooling liquid is suitable for platform development.

The circulation circuit 70 includes a first branch 71 and a second branch 72, one end of the first branch 71 is communicated with a first control valve 81, one end of the second branch 72 is communicated with the battery heat exchange circuit 30, and the other end of the first branch 71 and the other end of the second branch 72 are communicated with a second control valve 82. Specifically, one end of the second branch 72 is unidirectionally communicated with the battery heat exchange circuit 30, the cooling liquid can flow from the battery heat exchange circuit 30 to the second branch 72, the first branch 71 is bidirectionally communicated, one end of the first branch 71 is communicated with the "g" valve port of the first control valve 81, the other end of the first branch 71 is communicated with the other end of the second branch 72, the cooling liquid can flow from the "g" valve port of the first control valve 81 to the first branch 71, or the cooling liquid of the battery heat exchange circuit 30 can flow from the second branch 72 to the first branch 71 and finally to the "g" valve port of the first control valve 81.

The circulation loop 70 includes a third branch 73, one end of the third branch 73 communicates with the first control valve 81, and the other end of the third branch 73 communicates with the first control valve 81 and the heating loop 60. Specifically, when one end of the third branch 73 is communicated with the "f" valve port of the first control valve 81 and the "f" valve port of the first control valve 81 is communicated with the "g" valve port, the first branch 71 is communicated with the third branch 73, the other end of the third branch 73 is provided with a check valve 74 and a three-way valve, the other end of the third branch 73 is communicated with the "h" valve port of the first control valve 81 or the heating loop 60, and the check valve 74 prevents the cooling liquid flowing out of the heating loop 60 from flowing back to the "f" valve port of the first control valve 81, so that the stability of the thermal management system 100 is improved.

The heat exchanger circuit 50 includes a heat exchanger 51, both ends of the heat exchanger circuit 50 are respectively communicated with a first control valve 81, and the air conditioning system 10 and the heat exchanger 51 are communicated. Specifically, both ends of the heat exchanger loop 50 are respectively communicated with the "d" valve port and the "e" valve port of the first control valve 81, thereby realizing the communication between the heat exchanger loop 50 and other loops, and the air conditioning system 10 is communicated with the heat exchanger 51, so that the heat exchanger 51 exchanges heat with the air conditioning system 10, and heat can be transferred to the other loops.

The heating circuit 60 includes a condenser 61, an electric heater 62, and a warm air core 63, the electric heater 62 and the warm air core 63 are connected in series with each other, one end of the condenser 61 is communicated with one end of the second control valve 82 and the warm air core 63, and the other end of the condenser 61 is communicated with the other end of the warm air core 63 and the first control valve 81. Specifically, one end of the condenser 61 may be in communication with the "k" port of the second control valve 82, and may also be in communication with the warm air core 63, and the other end of the condenser 61 is in communication with the other end of the warm air core 63 and the "h" port of the first control valve 81. In this way, the cooling fluid can flow through the condenser 61 to exchange heat and then release heat at the warm air core 63, thereby realizing the function of heating the passenger compartment, and can flow to other circuits through the first control valve 81.

And, the heating circuit 60 further includes a third water pump 64, one end of the third water pump 64 is communicated with the "k" valve port of the second control valve 82 and the warm air core 63, and the other end is communicated with the condenser 64 for driving the cooling liquid to circulate in the heating circuit 60, and the opening or closing of the third water pump 64 may be adjusted according to the need.

The air conditioning system 10 includes a compressor 11 and an evaporator 12, the compressor 11, the evaporator 12 and a condenser 61 are connected in series with each other, and the heat exchanger 51 and the evaporator 12 are connected in parallel with each other and connected in series with the condenser 61. The refrigerant in the compressor 11 releases heat at the condenser 61, and depending on the operation mode, the refrigerant may flow to the heat exchanger 51 to exchange heat with the coolant side or flow to the evaporator 12 to evaporate and absorb heat, thereby realizing the cooling of the passenger compartment.

The radiator circuit 40 includes a radiator 41, and one end of the radiator 41 communicates with a first control valve 81. Specifically, one end of the radiator 41 communicates with the "i" port of the first control valve 81, the coolant flows in one direction through the radiator circuit 40, the coolant flows through the radiator 41 from the "i" port to radiate heat, and the cooled coolant flows out of the radiator circuit 40.

The high-pressure heat exchange circuit 20 comprises a motor 21, a motor controller 22 and a first water pump 23, and the motor 21, the motor controller 22 and the first water pump 23 are mutually connected in series. The motor 21 and the motor controller 22 can generate heat in the operation process, and the temperature of the cooling liquid is increased after heat exchange with the motor 21 and the motor controller 22, so that the heat can be transferred, and the functions of cooling or heating other components of the motor 21 and the motor controller 22 are realized.

Wherein the opening and closing or opening degree of the first water pump 23 can be adjusted according to the requirement.

And, the thermal management system 100 further includes a fourth branch 83, one end of the fourth branch 83 communicates with the first control valve 81, and the other ends of the first water pump 23 and the fourth branch 83 communicate. Specifically, one end of the fourth branch 83 communicates with the "b" port of the first control valve 81, and in some modes of operation, the radiator 41 and the first water pump 23 are connected in series with each other as shown with reference to fig. 2 to 4, and in some modes of operation, the radiator 41 and the first water pump 23 are connected in parallel as shown with reference to fig. 5 to 7, and at this time, the other end of the fourth branch 83 communicates with the first water pump 23 in the high-pressure heat exchange circuit 20.

The heat exchanger circuit 50 includes a heat exchanger 51, and one end of the heat exchanger 51 communicates with a first control valve 81. Specifically, one end of the heat exchanger 51 communicates with the "e" port of the first control valve 81.

And, the battery heat exchange circuit 30 includes a second water pump 31 and a battery pack 32, the second water pump 31 and the battery pack 32 are connected in series with each other, and one end of the second water pump 31 communicates with the first control valve 81. Specifically, one end of the second water pump 31 communicates with the "c" port of the first control valve 81.

And, the thermal management system 100 further includes a fifth branch 84, one end of the fifth branch 84 communicates with the first control valve 81, and the battery pack 32 and the heat exchanger 51 are connected in parallel with each other and communicate with the other end of the fifth branch 84. Specifically, one end of the fifth branch 84 communicates with the "d" port of the first control valve 81, and in some modes of operation, the battery pack 32 and the heat exchanger 51 are connected in series with each other, so that heat from the battery pack 32 can be transferred to the heat exchanger 51 for heat exchange with the air conditioning system 10, and in other modes of operation, the battery pack 32 and the heat exchanger 51 are connected in parallel with each other, and the other ends of the battery pack 32 and the fifth branch 84 communicate with each other, so that heat from the battery pack 32 is transferred through the first control valve 81.

The thermal management system 100 further includes a water overflow tank 85 and a four-way pipe 86, the four-way pipe 86 being in communication with the radiator circuit 40, the first control valve 81, the high pressure heat exchange circuit 20, and the water overflow tank 85, respectively. The overflow tank 85 is used for maintaining pressure balance of the cooling liquid side, and is communicated with the radiator circuit 40, the first control valve 81, the high-pressure heat exchange circuit 20 and the overflow tank 85 through the four-way pipe 86, and in various working modes, the overflow tank 85 can be communicated with the circuit of the cooling liquid side to maintain pressure balance of the cooling liquid side.

The mode of operation of the thermal management system 100 of an embodiment of the present invention is described below with reference to FIGS. 2-7.

Referring to FIG. 2, a first mode of operation of the thermal management system 100 of an embodiment of the present invention:

The "a" valve port and the "f" valve port of the first control valve 81 are communicated, the "h" valve port and the "i" valve port are communicated, the radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and the radiator circuit is communicated with the third branch 73 through the first control valve 81, so that the high-pressure part cooling function is realized.

The cooling liquid flows to the radiator 41, the first water pump 23, the motor controller 22, the motor 21, the first control valve 81, the check valve 74, the first control valve 81 and the radiator 41.

The cooling liquid is subjected to heat dissipation at the radiator 41 to become low-temperature cooling liquid, the temperature of the motor controller 22 and the motor 21 is reduced when the cooling liquid passes through the motor controller 22 and the motor 21, and the high-temperature cooling liquid returns to the radiator 41 to be cooled after passing through the first control valve 81 and the third branch 73 and continues to circulate.

The "c" valve port and the "e" valve port of the first control valve 81 are communicated, the battery heat exchange circuit 30 is connected in series with the heat exchanger circuit 50, and exchanges heat with the air conditioning system 10 through the heat exchanger 51, so that the active cooling function of the battery pack 32 is realized.

The flow direction of the cooling liquid is that the second water pump 31, the battery pack 32, the heat exchanger 51, the first control valve 81 and the second water pump 31;

the refrigerant flows to the compressor 11, the condenser 61, the heat exchanger 51 and the compressor 11.

The cooling liquid exchanges heat with the battery pack 32 under the driving of the second water pump 31, the temperature of the battery pack 32 is lowered, and the high-temperature cooling liquid exchanges heat with the low-temperature refrigerant of the air conditioning system 10 at the heat exchanger 51, and flows back to the second water pump 31 through the first control valve 81.

The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, discharges the heat to a low-temperature refrigerant at the condenser 61, absorbs the heat of the coolant side at the heat exchanger 51 to become a gas, and finally flows into the compressor 11.

The refrigerant is radiated at the condenser 61, and the temperature of the coolant increases, so that the refrigerant can be used for heating the passenger compartment, and the passenger compartment can be cooled or used for other purposes in combination with the evaporator 12, and the other operation modes are not limited thereto, and the same applies hereinafter.

The "a" valve port and the "f" valve port of the first control valve 81 are communicated, the "h" valve port and the "i" valve port are communicated, the "c" valve port and the "e" valve port are communicated, and the "k" valve port and the "l" valve port of the second control valve 82 are communicated, so that the condenser 61 and the high-pressure heat exchange circuit 20 can be cooled in parallel.

The flow direction of the cooling liquid is radiator 41, first water pump 23, motor controller 22, motor 21, first control valve 81, one-way valve 74, first control valve 81 and radiator 41;

Condenser 61→electric heater 62→first control valve 81→radiator 41→first water pump 23→second control valve 82→third water pump 64→condenser 61;

the refrigerant flows to the compressor 11, the condenser 61, the heat exchanger 51 and the compressor 11.

The cooling liquid is subjected to heat dissipation at the radiator 41 to become low-temperature cooling liquid, a part of the cooling liquid is subjected to heat dissipation when passing through the motor controller 22 and the motor 21 to become high-temperature cooling liquid, the temperatures of the motor controller 22 and the motor 21 are reduced, the high-temperature cooling liquid returns to the radiator 41 to be cooled after passing through the first control valve 81 and the third branch 73, the other part of the cooling liquid exchanges heat with the condenser 61, the refrigerant of the air conditioning system 10 is cooled, and the high-temperature cooling liquid returns to the radiator 41 to be cooled.

The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, discharges the heat to a low-temperature refrigerant at the condenser 61, absorbs the heat of the coolant side at the heat exchanger 51 to become a gas, and finally flows into the compressor 11.

The electric heater 62 is turned on according to the vehicle condition for heating the passenger compartment, and is turned off when not needed, and the electric heater 62 in other operation modes will be the same.

And, the low temperature and high pressure refrigerant discharged at the condenser 61 can be changed into low temperature and low pressure refrigerant through the stop valve, and the low temperature and low pressure refrigerant is returned to the compressor 11 through the gas-liquid separator without passing through the heat exchanger 51, so that a hot gas bypass circuit is formed, and the air conditioning system 10 in other operation modes can be formed into the hot gas bypass circuit hereinafter.

Referring to FIG. 3, a second mode of operation of the thermal management system 100 of an embodiment of the present invention is shown:

The "a" valve port and the "c" valve port of the first control valve 81 are communicated, the "d" valve port and the "f" valve port are communicated, the "h" valve port and the "i" valve port are communicated, the radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and is communicated with the battery heat exchange circuit 30 and the third branch 73 through the first control valve 81, so that the high-pressure parts and the battery cooling function are realized.

The cooling liquid flows to the radiator 41, the first water pump 23, the motor controller 22, the motor 21, the first control valve 81, the second water pump 31, the battery pack 32, the first control valve 81, the one-way valve 74, the first control valve 81 and the radiator 41.

The cooling liquid is changed into low-temperature cooling liquid by heat dissipation at the radiator 41, the temperature of the motor controller 22, the motor 21 and the battery is reduced by heat conversion when passing through the motor controller 22, the motor 21 and the battery, the high-temperature cooling liquid is cooled by passing through the first control valve 81 and the third branch 73 and then returns to the radiator 41, and circulation is continued.

The "a" valve port and the "c" valve port of the first control valve 81 are communicated, the "d" valve port and the "f" valve port are communicated, the "h" valve port and the "i" valve port are communicated, and the "k" valve port and the "l" valve port of the second control valve 82 are communicated, so that the parallel cooling function of high-voltage parts, batteries and the condenser 61 is realized.

The flow direction of the cooling liquid is that the radiator 41, the first water pump 23, the motor controller 22, the motor 21, the first control valve 81, the second water pump 31, the battery pack 32, the first control valve 81, the one-way valve 74, the first control valve 81 and the radiator 41;

Condenser 61→electric heater 62→first control valve 81→radiator 41→first water pump 23→second control valve 82→third water pump 64→condenser 61.

The refrigerant flows to the compressor 11, the condenser 61, the heat exchanger 51 and the compressor 11;

compressor 11→condenser 61→ evaporator 12→compressor 11.

The cooling liquid is subjected to heat dissipation at the radiator 41 to become low-temperature cooling liquid, a part of the cooling liquid is subjected to heat dissipation when passing through the motor controller 22, the motor 21 and the battery to become high-temperature cooling liquid, the temperatures of the motor controller 22, the motor 21 and the battery are reduced, the high-temperature cooling liquid returns to the radiator 41 to cool after passing through the third branch 73, the other part of the cooling liquid exchanges heat with the condenser 61, the refrigerant of the air conditioning system 10 is cooled, and the high-temperature cooling liquid returns to the radiator 41 to dissipate heat.

The refrigerant compressed by the compressor 11 is a high-temperature and high-pressure gas, and is released to a low-temperature refrigerant in the condenser 61, so that the refrigerant can absorb the heat of the coolant side in the heat exchanger 51 and become gas, and can absorb heat by evaporation in the evaporator 12, thereby cooling the passenger compartment, and finally flows into the compressor 11.

Referring to FIG. 4, a third mode of operation of thermal management system 100 of an embodiment of the present invention:

The first control valve 81 has a valve port "a" and a valve port "d", a valve port "e" and an valve port "i", a valve port "h" and a valve port "c", a valve port "j" and a valve port "k" and a valve port "j" and a valve port "k", respectively, of the first control valve 81, the radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and is connected with the heat exchanger circuit 50 through the first control valve 81, the battery pack 32 is connected with the condenser 61 through the second branch 72, and the function of heating the passenger compartment or the battery is realized by using the heat of the radiator circuit 40 and the high-pressure heat exchange circuit 20.

The flow direction of the cooling liquid is that the heat exchanger 51, the first control valve 81, the radiator 41, the first water pump 23, the motor controller 22, the motor 21, the first control valve 81 and the heat exchanger 51;

Condenser 61→electric heater 62→warm air core 63→third water pump 64→condenser 61;

Condenser 61→electric heater 62→first control valve 81→second water pump 31→battery pack 32→second control valve 82→condenser 61;

the refrigerant flows to the compressor 11, the condenser 61, the heat exchanger 51 and the compressor 11;

The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, and releases heat to a low-temperature refrigerant at the condenser 61, so that the temperature of the cooling liquid at the cooling liquid side is increased, a part of the cooling liquid can flow to the warm air core 63, release heat to the environment, and blow the cooling liquid into the passenger compartment through the warm air core 63, and the other part exchanges heat with the battery pack 32 through the third branch 73 and the first control valve 81 to heat the battery. The refrigerant needs to absorb heat to return to the compressor 11 to maintain the circulation of the air conditioning system 10, and the cooling liquid carries the heat of the radiator circuit 40 and the high-pressure heat exchange circuit 20 to exchange heat with the air conditioning system 10 at the heat exchanger 51, so that the refrigerant absorbs heat to be changed into gas at the heat exchanger 51 to maintain the circulation of the system.

The valve ports "g" and "f" of the first control valve 81 are communicated, the valve ports "h" and "c" are communicated, and the battery heat exchange circuit 30 and the circulation circuit 70 are communicated, so that the function of uniform temperature of the battery pack 32 is realized.

The coolant flows to the battery pack 32, the first control valve 81, the check valve 74, the first control valve 81, the second water pump 31 and the battery pack 32.

The cooling liquid circulates in the battery pack 32 and the circulation loop 70, so that the temperature uniformity among the battery cells or modules of the battery pack 32 is maintained, and the problems of performance reduction, potential safety hazard, service life shortening and the like caused by overlarge temperature difference are avoided.

Referring to FIG. 5, a fourth mode of operation of thermal management system 100 of an embodiment of the present invention is shown:

The first control valve 81 is communicated with the valve port "a" and the valve port "d", the valve port "b" and the valve port "e", the valve port "h" and the valve port "c" are communicated, the second control valve 82 is communicated with the valve port "j" and the valve port "k", the high-pressure heat exchange circuit 20 is communicated with the heat exchanger circuit 50 through the first control valve 81, the battery pack 32 is communicated with the condenser 61 through the second branch 72, and the function of heating the passenger cabin or the battery is realized by utilizing the heat of the high-pressure heat exchange circuit 20.

The flow direction of the cooling liquid is that the heat exchanger 51, the first control valve 81, the first water pump 23, the motor controller 22, the motor 21, the first control valve 81 and the heat exchanger 51;

Condenser 61→electric heater 62→warm air core 63→third water pump 64→condenser 61;

Condenser 61→electric heater 62→first control valve 81→second water pump 31→battery pack 32→second control valve 82→condenser 61;

the refrigerant flows to the compressor 11, the condenser 61, the heat exchanger 51 and the compressor 11;

The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, and releases heat to a low-temperature refrigerant at the condenser 61, so that the temperature of the cooling liquid at the cooling liquid side is increased, a part of the cooling liquid can flow to the warm air core 63, release heat to the environment, and blow the cooling liquid into the passenger compartment through the warm air core 63, and the other part exchanges heat with the battery pack 32 through the third branch 73 and the first control valve 81 to heat the battery. The refrigerant needs to absorb heat to return to the compressor 11 to maintain the circulation of the air conditioning system 10, and the cooling liquid carries the heat of the high-pressure heat exchange loop 20 to exchange heat with the air conditioning system 10 at the heat exchanger 51, so that the refrigerant absorbs heat to be changed into gas at the heat exchanger 51 to maintain the circulation of the system.

The valve ports "g" and "f" of the first control valve 81 are communicated, the valve ports "h" and "c" are communicated, and the battery heat exchange circuit 30 and the circulation circuit 70 are communicated, so that the function of uniform temperature of the battery pack 32 is realized.

The coolant flows to the battery pack 32, the first control valve 81, the check valve 74, the first control valve 81, the second water pump 31 and the battery pack 32.

The cooling liquid circulates in the battery pack 32 and the circulation loop 70, so that the temperature uniformity among the battery cells or modules of the battery pack 32 is maintained, and the problems of performance reduction, potential safety hazard, service life shortening and the like caused by overlarge temperature difference are avoided.

Referring to FIG. 6, mode five of operation of thermal management system 100 of an embodiment of the present invention:

The "g" valve port and the "c" valve port of the first control valve 81 are communicated, and the battery heat exchange circuit 30 is communicated with the second branch 72 and the first branch 71, so that the function of homogenizing the temperature of the battery pack 32 is realized.

The coolant flows to the battery pack 32, the first control valve 81, the second water pump 31, and the battery pack 32.

The cooling liquid circulates in the battery pack 32 and the circulation loop 70, so that the temperature uniformity among the battery cells or modules of the battery pack 32 is maintained, and the problems of performance reduction, potential safety hazard, service life shortening and the like caused by overlarge temperature difference are avoided.

The valve port "a" and the valve port "f" of the first control valve 81 are communicated, the valve port "b" and the valve port "h" are communicated, and the battery heat exchange loop 30 is communicated with the third branch 73, so that the function of electric drive heat accumulation is realized.

The cooling liquid flows to the first water pump 23, the motor controller 22, the motor 21, the first control valve 81, the one-way valve 74, the first control valve 81 and the first water pump 23.

The cooling liquid circulates in the high-pressure heat exchange loop 20 and the third branch 73, heat generated in the running process of the motor 21, the motor controller 22 and other components is utilized, the heat is collected and stored in a concentrated mode through the cooling liquid, and heat storage is transmitted to an electric drive system in cold, so that preheating is achieved, energy efficiency is improved, and the performance of the whole vehicle is improved.

Referring to fig. 7, a sixth mode of operation of the thermal management system 100 of an embodiment of the present invention:

The valve port "g" and the valve port "f" of the first control valve 81 are communicated, the valve port "h" and the valve port "b" are communicated, the valve port "a" and the valve port "c" are communicated, and the battery heat exchange circuit 30, the high-pressure heat exchange circuit 20 and the circulation circuit 70 are communicated through the first control valve 81, so that the function of electrically driving the active heat generation/waste heat heating battery is realized.

The cooling liquid flows to the battery pack 32, the first control valve 81, the one-way valve 74, the first control valve 81, the first water pump 23, the motor controller 22, the motor 21, the first control valve 81, the second water pump 31 and the battery pack 32.

The cooling liquid passes through the high-pressure heat exchange loop 20, and the motor controller 22 and the motor 21 are operated to generate heat or waste heat is transmitted to the battery pack 32, so that the battery pack 32 is heated.

The valve port "h" and the valve port "b" of the first control valve 81 are communicated, the valve port "a" and the valve port "c" are communicated, the valve port "j" and the valve port "k" of the second control valve 82 are communicated, the high-pressure heat exchange circuit 20 is communicated with the battery heat exchange circuit 30 through the first control valve 81, and the battery heat exchange circuit 30 is communicated with the condenser 61 through the second branch 72, so that the function of electrically-driven preheating is realized.

The flow direction of the cooling liquid is that the battery pack 32, the second control valve 82, the third water pump 64, the condenser 61, the electric heater 62, the first control valve 81, the first water pump 23, the motor controller 22, the motor 21, the first control valve 81, the second water pump 31 and the battery pack 32.

The refrigerant flows to the compressor 11, the condenser 61, the heat exchanger 51 and the compressor 11;

Under low temperature environment, lubricating oil, heat conduction material etc. of electric drive system can become sticky, reduces operating efficiency, can reduce starting resistance through preheating, raises the efficiency, and preheating can also prevent mechanical damage or insulation failure because of cold start causes, and electric drive system can reach the design operating mode fast, provides better dynamic performance, extension system life-span.

The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, releases heat at the condenser 61 into a low-temperature refrigerant, increases the temperature of the coolant on the coolant side, transfers heat to the high-pressure heat exchange circuit 20 through the third branch 73 and the first control valve 81, and transfers heat to the electric drive system through the circulating coolant.

A vehicle according to an embodiment of the second aspect of the invention includes a thermal management system 100.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (10)

1. A thermal management system, comprising:

an air conditioning system (10), the air conditioning system (10) comprising a condenser (61);

A first control valve (81), wherein the first control valve (81) is communicated with a high-pressure heat exchange loop (20), a battery heat exchange loop (30), a radiator loop (40), a heat exchanger loop (50), a heating loop (60) and a circulation loop (70), the first control valve (81) is selectively communicated with one or more of the high-pressure heat exchange loop (20), the battery heat exchange loop (30), the radiator loop (40), the heat exchanger loop (50), a heating loop (60) and the circulation loop (70), the air conditioning system (10) exchanges heat with the heat exchanger loop (50) and the heating loop (60), and the heating loop (60) is communicated with the condenser (61);

-a second control valve (82), one end of the second control valve (82) being in communication with the circulation circuit (70) and the battery heat exchange circuit (30), a further end of the second control valve (82) being in communication with the radiator circuit (40), a further end of the second control valve (82) being in communication with the condenser (61).

2. The thermal management system according to claim 1, wherein the circulation circuit (70) comprises a first branch (71), one end of the first branch (71) being in communication with the first control valve (81), and

The thermal management system further comprises a second branch (72), one end of the second branch (72) is communicated with the battery heat exchange loop (30), and the other end of the first branch (71) and the other end of the second branch (72) are communicated with the second control valve (82).

3. The thermal management system according to claim 2, wherein the circulation circuit (70) includes a third branch (73), one end of the third branch (73) communicates with the first control valve (81), and the other end of the third branch (73) communicates with the first control valve (81) and the heating circuit (60).

4. The thermal management system according to claim 1, wherein the heat exchanger loop (50) comprises a heat exchanger (51), both ends of the heat exchanger loop (50) are respectively in communication with the first control valve (81), and the air conditioning system (10) is in communication with the heat exchanger (51).

5. The thermal management system according to claim 1, wherein the heating circuit (60) includes an electric heater (62) and a warm air core (63), the electric heater (62) and the warm air core (63) are connected in series with each other, one end of the condenser (61) is communicated with the second control valve (82) and one end of the warm air core (63), and the other end of the condenser (61) is communicated with the other end of the warm air core (63) and the first control valve (81).

6. The thermal management system according to claim 1, wherein the air conditioning system (10) comprises a compressor (11) and an evaporator (12), the compressor (11), the evaporator (12) and the condenser (61) being connected in series with each other;

The heat exchanger circuit (50) comprises a heat exchanger (51), the heat exchanger (51) and the evaporator (12) being connected in parallel with each other and in series with the condenser (61).

7. The thermal management system according to claim 1, wherein the radiator circuit (40) includes a radiator (41), one end of the radiator (41) communicates with the first control valve (81), and

The high-pressure heat exchange loop (20) comprises a motor (21), a motor controller (22) and a first water pump (23), wherein the motor (21), the motor controller (22) and the first water pump (23) are mutually connected in series, and

The thermal management system further comprises a fourth branch (83), one end of the fourth branch (83) is communicated with the first control valve (81), and the first water pump (23) is communicated with the other end of the fourth branch (83).

8. The thermal management system according to claim 1, wherein the heat exchanger circuit (50) comprises a heat exchanger (51), one end of the heat exchanger (51) being in communication with the first control valve (81), and

The battery heat exchange loop (30) comprises a second water pump (31) and a battery pack (32), wherein the second water pump (31) and the battery pack (32) are mutually connected in series, one end of the second water pump (31) is communicated with the first control valve (81), and

The thermal management system further comprises a fifth branch (84), one end of the fifth branch (84) is communicated with the first control valve (81), and the battery pack (32) and the heat exchanger (51) are mutually connected in parallel and are communicated with the other end of the fifth branch (84).

9. The thermal management system of claim 1, further comprising a water overflow tank (85) and a four-way pipe (86), the four-way pipe (86) being in communication with the radiator circuit (40), the first control valve (81), the high pressure heat exchange circuit (20), and the water overflow tank (85), respectively.

10. A vehicle characterized by comprising a thermal management system (100) according to any one of claims 1-9.