Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system and a vehicle, and the thermal management system comprises a first control valve which is communicated with a high-pressure heat exchange loop, a battery heat exchange loop, a radiator loop and a heat exchanger loop. The first control valve selectively communicates with one or more of the high-pressure heat exchange loop, the battery heat exchange loop, the radiator loop and the heat exchanger loop; one end of the heating loop is communicated with the first control valve; the air conditioning system exchanges heat with the heat exchanger loop and the heating loop; at least three ends of the multi-way pipe are communicated with the first control valve, and the other end of the multi-way pipe is communicated with one end of the heating loop. By arranging the first control valve and the multi-way pipe, heat management subsystems are coupled, the energy utilization rate is increased, parts are universal to the maximum extent, and platform development is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle thermal management technical field especially is related to a thermal management system and vehicle. BACKGROUND

[0002] Pure electric thermal management architecture, simply, is the control system of the heat inside electric vehicle, it relates to battery thermal management, drive motor cooling, air conditioning system and passenger cabin temperature regulation and so on multiple subsystems. In pure electric vehicle, since the battery works and will produce a large amount of heat, and the performance and life of battery are closely related to temperature, therefore, efficient, intelligent thermal management architecture is crucial.

[0003] In the related art, the integrated architecture of the cooling liquid side of the pure electric thermal management system has developed from the original three-way valve+four-way valve form to five-way valve, eight-way valve and nine-way valve form, but the water resistance under each working mode can be further optimized, and the energy utilization rate has room for improvement. SUMMARY

[0004] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a thermal management system, which couples each subsystem of thermal management by setting a first control valve and a multi-way pipe, improves energy utilization, maximizes the use of components and realizes platform development.

[0005] According to the thermal management system of the first aspect of the utility model embodiment, the first control valve is communicated with a high-pressure heat exchange circuit, a battery heat exchange circuit, a radiator circuit and a heat exchanger circuit, and the first control valve selectively communicates one or more of the high-pressure heat exchange circuit, the battery heat exchange circuit, the radiator circuit and the heat exchanger circuit; a heating circuit, one end of the heating circuit and the first control valve are communicated; an air conditioning system, the air conditioning system exchanges heat with the heat exchanger circuit and the heating circuit; a multi-way pipe, at least three ends of the multi-way pipe and the first control valve are communicated, and the other end of the multi-way pipe and one end of the heating circuit are communicated.

[0006] According to the thermal management system of the utility model embodiment, each subsystem of thermal management is coupled by setting a first control valve and a multi-way pipe, energy utilization is improved, components are maximized, and platform development is realized.

[0007] According to some embodiments of the utility model, the multi-way pipe includes: a first pipe opening and a second pipe opening; and the thermal management system further includes: a first branch and a second branch, the first branch is connected between the first pipe opening and one valve opening of the first control valve, and the second branch is connected between the second pipe opening and another valve opening of the first control valve.

[0008] According to some embodiments of the present application, the multi-way pipe further comprises: a third pipe opening and a fourth pipe opening; and the thermal management system further comprises: a third branch, one end of the third branch being in communication with the third pipe opening and the other end being in communication with the first control valve, the fourth pipe opening being in communication with one end of the heating circuit.

[0009] According to some embodiments of the present application, a first one-way valve is arranged on the first branch, the first one-way valve being configured to allow the coolant to flow from the first control valve to the multi-way pipe; and a second one-way valve is arranged on the third branch, the second one-way valve being configured to allow the coolant to flow from the third pipe opening to the first control valve and / or the heating circuit.

[0010] According to some embodiments of the present application, the heating circuit comprises: a condenser, an electric heater and a warm air core, the electric heater and the warm air core being connected in series with each other, one end of the condenser being in communication with the multi-way pipe and one end of the warm air core, the other end of the condenser being in communication with the other end of the warm air core and the first control valve.

[0011] According to some embodiments of the present application, the thermal management system further comprises: a second control valve, one end of the second control valve being in communication with the condenser, the other end of the second control valve being in communication with the multi-way pipe, and the further end of the second control valve being in communication with the warm air core.

[0012] According to some embodiments of the present application, the heat exchanger circuit comprises: a heat exchanger, both ends of the heat exchanger being in communication with the first control valve, and the air conditioning system being in communication with the heat exchanger; the heating circuit comprises: a condenser, an electric heater and a warm air core, the electric heater and the warm air core being connected in series with each other; and the air conditioning system comprises: a compressor and an evaporator, the compressor, the evaporator and the condenser being connected in series with each other; wherein the heat exchanger and the evaporator are connected in parallel with each other and in series with the condenser.

[0013] According to some embodiments of the present application, the radiator circuit comprises: a radiator, one end of the radiator being in communication with the first control valve; the high-pressure heat exchange circuit comprises: a motor, a motor controller and a first water pump, the motor, the motor controller and the first water pump being connected in series with each other; and the thermal management system further comprises: a fourth branch, one end of the fourth branch being in communication with the first control valve, and the radiator and the first water pump being connected in parallel with each other and in communication with the other end of the fourth branch.

[0014] According to some embodiments of the present application, the heat management system further comprises: a water overflow tank and a four-way pipe, the four-way pipe is in communication with the radiator circuit, the first control valve, the high-pressure heat exchange circuit and the water overflow tank respectively.

[0015] According to the vehicle of the second aspect of the present application, the heat management system is included.

[0016] The beneficial effects of the embodiments of the present application are as follows: the first control valve and the multi-way pipe are arranged to couple the heat management subsystems, improve the energy utilization rate, maximize the parts generalization, and realize the platform development.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent from the following description in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 is a schematic diagram of a heat management system according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a heat management system working mode one according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of a heat management system working mode two according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of a heat management system working mode three according to an embodiment of the present application;

[0023] Figure 5 is a schematic diagram of a heat management system working mode four according to an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of a heat management system working mode five according to an embodiment of the present application;

[0025] Figure 7 is a schematic diagram of a heat management system working mode six according to an embodiment of the present application.

[0026] REFERENCE NUMERALS:

[0027] 100, heat management system;

[0028] 10, air conditioning system; 11, compressor; 12, evaporator;

[0029] 20, high pressure heat exchange circuit; 21, motor; 22, motor controller; 23, first water pump;

[0030] 30, battery heat exchange circuit; 31, second water pump; 32, battery pack;

[0031] 40, radiator circuit; 41, radiator;

[0032] 50, heat exchanger circuit; 51, heat exchanger;

[0033] 60, heating circuit; 61, condenser; 62, electric heater; 63, warm air core; 64, third water pump;

[0034] 70, multi-way pipe;

[0035] 81, first control valve; 82, second control valve; 83, first branch; 831, first check valve; 84, second branch; 85, third branch; 851, second check valve; 86, fourth branch; 87, overflow tank; 88, four-way pipe. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present application are described in detail below.

[0037] The embodiments of the present application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present application are described in detail below. Figures 1-7 The heat management system 100 according to the embodiments of the present application is described below, and the present application also proposes a vehicle.

[0038] Referring to Figure 1 The heat management system 100 according to the embodiments of the present application is described below, and the present application also proposes a vehicle.

[0039] The first control valve 81 is connected in communication with the high pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40 and the heat exchanger circuit 50, and the first control valve 81 selectively communicates one or more of the high pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40 and the heat exchanger circuit 50.

[0040] In this way, the heat in the high pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40 and the heat exchanger circuit 50 can flow through the first control valve 81, and under the control of the vehicle controller, the heat can flow between different circuits or devices according to the heat management mode of the vehicle, and different working modes can be flexibly selected in different use scenarios, avoiding frequent use of the same heat source and improving system efficiency.

[0041] The heat management system 100 uses the first control valve 81 to control multiple circuits, each of which does not interfere with each other but can exchange heat with each other through the first control valve 81, can avoid the situation that the cooling liquid flows through the components that do not need to be temperature-regulated in a certain working mode, reduces heat loss, reduces flow resistance in various modes, and improves energy utilization. And save the internal space of the vehicle, provide more possibilities for the subsequent loading of new functions and new technologies.

[0042] Specifically, the first control valve 81 can be a ten-way valve, and the cooling liquid flows in the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, and the heat exchanger circuit 50. 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, a ninth valve port, and a tenth valve port, which are respectively Figure 1 “a”, “b”, “c”, “d”, “e”, “f”, “g”, “h”, “i”, and “j” in the above.

[0043] One end of the heating circuit 60 communicates with the first control valve 81, and the heating circuit 60 is used for passenger cabin heating. One end of the heating circuit 60 communicates with the “h” valve port of the first control valve 81, but the cooling liquid in other circuits connected with the first control valve 81 does not directly participate in the passenger cabin heating, and the heating circuit 60 is relatively independent.

[0044] The air conditioning system 10 exchanges heat with the heat exchanger circuit 50 and the heating circuit 60. The refrigerant flows in the air conditioning system 10, which can absorb heat from the heat exchanger circuit 50 or release heat to the heating circuit 60, thereby realizing heat transfer. In addition, the heat in the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, etc. is exchanged with the air conditioning system 10 through the first control valve 81, and the refrigerant in the air conditioning system 10 releases heat to the heating circuit 60, thereby realizing the heating function. That is, the heating circuit 60 is relatively independent, but can realize the heating function by using the first control valve 81 and the air conditioning system 10. In this way, when the heating function is not needed, the first control valve 81 controls the cooling liquid not to flow through the heating circuit 60, thereby reducing the heat loss of the heat management system 100.

[0045] Two ends of the multi-way pipe 70 communicate with the first control valve 81, one end of the multi-way pipe 70 communicates with one end of the heating circuit 60, and the other end of the multi-way pipe 70 communicates with the first control valve 81. Through the multi-way valve, multiple cooling liquid flow modes can be realized, and more functions can be realized with a simple structure.

[0046] Therefore, by setting the first control valve 81 and the multi-way pipe 70, the heat management subsystems are coupled, the energy utilization is improved, the components are maximized, and the platform development is realized.

[0047] The multi-port pipe 70 includes a first port and a second port. The thermal management system 100 also includes a first branch 83 and a second branch 84. The first branch 83 connects the first port to one port of the first control valve 81, and the second branch 84 connects the second port to the other port of the first control valve 81. Specifically, the first port is... Figure 1 The "k" in the middle refers to the second pipe opening. Figure 1 In the diagram, "l" refers to the first branch 83, which connects to the first pipe port and the "g" valve port of the first control valve 81, and the second branch 84, which connects to the second pipe port and the "h" valve port of the first control valve 81.

[0048] The multi-port pipe 70 also includes a third port and a fourth port. Furthermore, the thermal management system 100 also includes a third branch 85, one end of which is connected to the third port and the other end to the first control valve 81. The fourth port is connected to one end of the heating circuit 60. Specifically, the third port is... Figure 1 The "m" in the name refers to the fourth pipe opening. Figure 1 The "n" in the figure refers to the third branch 85, which is connected to the third pipe port and the "i" valve port of the first control valve 81.

[0049] A first check valve 831 is provided on the first branch 83, which is configured to allow coolant to flow from the first control valve 81 to the multi-port pipe 70. A second check valve 851 is provided on the third branch 85, which is configured to allow coolant to flow from the third port to the first control valve 81 and / or the heating circuit 60.

[0050] The heating circuit 60 includes a condenser 61, an electric heater 62, and a heater core 63. The electric heater 62 and the heater core 63 are connected in series. One end of the condenser 61 is connected to a multi-port pipe 70 and one end of the heater core 63. The other end of the condenser 61 is connected to the other end of the heater core 63 and a first control valve 81. Specifically, one end of the condenser 61 is connected to the "n" port of the multi-port pipe 70 and the output end of the heater core 63. The other end of the condenser 61 is connected to the input end of the heater core 63 and the "i" port of the first control valve 81.

[0051] The thermal management system 100 also includes a second control valve 82. One end of the second control valve 82 is connected to the condenser 61, another end of the second control valve 82 is connected to the multi-port pipe 70, and yet another end of the second control valve 82 is connected to the heater core 63. Specifically, the second control valve 82 includes an eleventh valve port, a twelfth valve port, and a thirteenth valve port. The eleventh valve port is connected to the condenser 61, the twelfth valve port is connected to the "n" port of the multi-port pipe 70, and the thirteenth valve port is connected to the output end of the heater core 63. The eleventh valve port is represented by "o" in the figure, the twelfth valve port by "p" in the figure, and the thirteenth valve port by "q" in the figure.

[0052] The heat exchanger circuit 50 includes a heat exchanger 51, and the heat exchanger 51 is in communication with the first control valve 81 at two ends, and the air conditioning system 10 is in communication with the heat exchanger 51. Specifically, the two ends of the heat exchanger circuit 50 are in communication with the "e" valve port and the "f" valve port of the first control valve 81 respectively, so as to realize the communication of the heat exchanger circuit 50 and other circuits, and the air conditioning system 10 is in communication 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 other circuits.

[0053] In addition, 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, and the cooling liquid can flow through the condenser 61 to exchange heat and then release heat at the warm air core 63, so as to realize the function of heating the passenger compartment. According to the vehicle condition, when the air conditioning system 10 is not started or the heat of the condenser 61 is insufficient, the electric heater 62 is started to heat the passenger compartment, and when the heating is not needed or the heat of the condenser 61 meets the heating demand of the passenger compartment, the electric heater 62 is turned off.

[0054] In addition, the air conditioning system 10 includes a compressor 11 and an evaporator 12, and the compressor 11, the evaporator 12 and the condenser 61 are connected in series with each other. The heat exchanger 51 and the evaporator 12 are connected in parallel with each other and in series with the condenser 61. The refrigerant in the compressor 11 releases heat at the condenser 61, and according to different working modes, can flow to the heat exchanger 51 to exchange heat with the cooling liquid, or flow to the evaporator 12 to evaporate and absorb heat, so as to realize the refrigeration of the passenger compartment.

[0055] The radiator circuit 40 includes a radiator 41, and one end of the radiator 41 is in communication with the first control valve 81. Specifically, one end of the radiator 41 is in communication with the "j" valve port of the first control valve 81, and the cooling liquid flows unidirectionally in the radiator circuit 40, flows through the radiator 41 to release heat from the "j" valve port, and the cooling liquid after being cooled flows out of the radiator circuit 40.

[0056] In addition, the high-pressure heat exchange circuit 20 includes 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 connected in series with each other. The motor 21 and the motor controller 22 generate heat during operation, and the cooling liquid increases in temperature after exchanging heat with the motor 21 and the motor controller 22, so as to transfer heat to realize the functions of cooling the motor 21 and the motor controller 22 or heating other components.

[0057] Furthermore, the thermal management system 100 also includes a fourth branch 86, one end of which is connected to the first control valve 81, and the radiator 41 and the first water pump 23 are connected in parallel and connected to the other end of the fourth branch 86. Specifically, one end of the fourth branch 86 is connected to the "b" valve port of the first control valve 81. In some operating modes, the radiator 41 and the first water pump 23 are connected in series, and in some operating modes, the radiator 41 and the first water pump 23 are connected in parallel. In this case, the fourth branch 86 is connected to the radiator circuit 40.

[0058] Furthermore, the battery heat exchange circuit 30 includes a second water pump 31 and a battery pack 32, which are connected in series. One end of the second water pump 31 is connected to the "c" valve port of the first control valve 81, and one end of the battery pack 32 is connected to the "d" valve port of the first control valve 81.

[0059] The thermal management system 100 also includes an overflow tank 87 and a four-way pipe 88. The four-way pipe 88 is connected to the radiator circuit 40, the first control valve 81, the high-pressure heat exchange circuit 20, and the overflow tank 87. The overflow tank 87 is used to maintain the pressure balance on the coolant side. It is connected to the radiator circuit 40, the first control valve 81, the high-pressure heat exchange circuit 20, and the overflow tank 87 through the four-way pipe 88. In various operating modes, the overflow tank 87 can be connected to the coolant side circuit to maintain the pressure balance on the coolant side.

[0060] The following reference Figures 2-7 The working mode of the thermal management system 100 according to an embodiment of the present invention is described.

[0061] Reference Figure 2 As shown, the working mode one of the thermal management system 100 in this embodiment of the present invention is as follows:

[0062] The "a" and "h" ports of the first control valve 81 are connected, and the "i" and "j" ports are connected. The coolant passes through the "l" and "m" ports of the multi-port pipe 70. The radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20, and is connected to the second branch 84 and the third branch 85 through the first control valve 81 to realize the cooling function of high-pressure components.

[0063] Coolant flow direction: Radiator 41 → First water pump 23 → Motor controller 22 → Motor 21 → First control valve 81 → Multi-port pipe 70 → Check valve → First control valve 81 → Radiator 41.

[0064] The coolant dissipates heat at the radiator 41 and becomes low-temperature coolant. When it passes through the motor controller 22 and the motor 21, it exchanges heat and becomes high-temperature coolant. The temperature of the motor controller 22 and the motor 21 decreases. The high-temperature coolant returns to the radiator 41 after passing through the first control valve 81, the second branch 84, and the third branch 85 to cool down and continues to circulate.

[0065] The "a" port and "h" port of the first control valve 81 are communicated, the "i" port and "j" port are communicated, the "b" port and "g" port are communicated, the "p" port and "o" port of the second control valve 82 are communicated, the cooling liquid passes through the "k" port and "n" port of the multi-way pipe 70, and the condenser 61 and the high-pressure component are parallelly cooled.

[0066] The cooling liquid flows in the following order: the radiator 41 → the first water pump 23 → the motor controller 22 → the motor 21 → the first control valve 81 → the multi-way pipe 70 → the second one-way valve 851 → the first control valve 81 → the radiator 41.

[0067] The condenser 61 → the electric heater 62 → the first control valve 81 → the radiator 41 → the four-way pipe 88 → the first control valve 81 → the first one-way valve 831 → the multi-way pipe 70 → the second control valve 82 → the third water pump 64 → the condenser 61;

[0068] The cooling liquid is cooled to low-temperature cooling liquid at the radiator 41, a part of the cooling liquid is heated to high-temperature cooling liquid when passing through the motor controller 22 and the motor 21, the temperature of the motor controller 22 and the motor 21 is reduced, the high-temperature cooling liquid is cooled at the radiator 41 after passing through the first control valve 81 and the third branch 85, and the other part of the cooling liquid is heated at the condenser 61, the refrigerant of the air conditioning system 10 is cooled, and the high-temperature cooling liquid is cooled at the radiator 41.

[0069] The compressor 11 compresses the refrigerant into high-temperature and high-pressure gas, the refrigerant is cooled to low-temperature refrigerant at the condenser 61, the refrigerant can absorb the heat of the cooling liquid side at the heat exchanger 51 to become gas, or evaporate to absorb heat at the evaporator 12 to cool the passenger compartment, and finally flows into the compressor 11.

[0070] The electric heater 62 is turned on according to the vehicle condition, is used to heat the passenger compartment, and is turned off when not needed. The electric heater 62 in other working modes below is the same.

[0071] In addition, the low-temperature and high-pressure refrigerant after heat release at the condenser 61 can also pass through the expansion valve to become low-temperature and low-pressure refrigerant, without passing through the heat exchanger 51, directly passing through the gas-liquid separator to return to the compressor 11, forming a hot gas bypass circuit. The air conditioning system 10 in other working modes below can form a hot gas bypass circuit.

[0072] The "d" port and the "f" port of the first control valve 81 are communicated, the "e" port and the "c" port are communicated, the "b" port and the "g" port are communicated, the "i" port and the "j" port are communicated, the "p" port and the "o" port of the second control valve 82 are communicated, the cooling liquid passes through the "k" port and the "n" port of the multi-way pipe 70, the battery heat exchange circuit 30 is connected in series with the heat exchanger circuit 50, exchanges heat with the air conditioning system 10 through the heat exchanger 51, and the battery pack 32 is actively cooled.

[0073] The cooling liquid flows in the following direction: the second water pump 31→the battery pack 32→the first control valve 81→the heat exchanger 51→the first control valve 81→the second water pump 31.

[0074] The cooling liquid flows in the following direction: the condenser 61→the electric heater 62→the first control valve 81→the radiator 41→the four-way pipe 88→the first control valve 81→the first one-way valve 831→the multi-way pipe 70→the second control valve 82→the condenser 61.

[0075] The refrigerant flows in the following direction: the compressor 11→the condenser 61→the heat exchanger 51→the compressor 11.

[0076] The cooling liquid exchanges heat with the battery pack 32 under the drive of the second water pump 31, the temperature of the battery pack 32 is reduced, 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.

[0077] The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, the high-temperature and high-pressure gas is cooled to become a low-temperature refrigerant at the condenser 61, and the low-temperature refrigerant absorbs heat from the cooling liquid side at the heat exchanger 51 to become a gas, and finally flows into the compressor 11. The high-temperature cooling liquid at the condenser 61 is cooled by the radiator 41, and then continues to flow back to the condenser 61, so as to maintain the heat balance of the system.

[0078] The "b" port and the "g" port of the first control valve 81 are communicated, the "i" port and the "j" port are communicated, the "p" port and the "o" port of the second control valve 82 are communicated, the cooling liquid passes through the "k" port and the "n" port of the multi-way pipe 70, and the passenger compartment is cooled.

[0079] The cooling liquid flows in the following direction: the condenser 61→the electric heater 62→the first control valve 81→the radiator 41→the four-way pipe 88→the first control valve 81→the first one-way valve 831→the multi-way pipe 70→the second control valve 82→the third water pump 64→the condenser 61.

[0080] The refrigerant flows in the following direction: the compressor 11→the condenser 61→the evaporator 12→the compressor 11.

[0081] The compressor compresses the refrigerant into high-temperature and high-pressure gas, which is cooled into low-temperature refrigerant at the condenser 61 and absorbs heat to become gas at the evaporator 12, so that the ambient temperature is reduced, thereby cooling the passenger compartment, and the gaseous refrigerant flows into the compressor 11. The high-temperature cooling liquid at the condenser 61 is cooled by the radiator 41 and then continues to return to the condenser 61 to maintain the heat balance of the system.

[0082] Referring to Figure 3 As shown in the figure, the working mode two of the heat management system 100 in the embodiment of the utility model:

[0083] The "a" valve port and the "h" valve port of the first control valve 81 are communicated, the "i" valve port and the "j" valve port are communicated, the "b" valve port and the "c" valve port are communicated, the "d" valve port and the "g" valve port are communicated, the cooling liquid passes through the "l" pipe port, the "m" pipe port and the "k" pipe port of the multi-way pipe 70, and the radiator circuit 40 is connected in series with the high-pressure heat exchange circuit 20 and the battery heat exchange circuit 30 respectively, so that the high-pressure components and the battery pack 32 are connected in parallel to realize the cooling function.

[0084] The cooling liquid flows in the following order: the radiator 41→the first water pump 23→the motor controller 22→the motor 21→the first control valve 81→the multi-way pipe 70→the second one-way valve 851→the first control valve 81→the radiator 41.

[0085] The cooling liquid flows in the following order: the radiator 41→the four-way pipe 88→the first control valve 81→the second water pump 31→the battery pack 32→the first control valve 81→the first one-way valve 831→the multi-way pipe 70→the second one-way valve 851→the first control valve 81→the radiator 41.

[0086] The cooling liquid is cooled into low-temperature cooling liquid at the radiator 41, a part of which exchanges heat into high-temperature cooling liquid when passing through the motor controller 22 and the motor 21, so that the temperature of the motor controller 22 and the motor 21 is reduced, the high-temperature cooling liquid returns to the radiator 41 after passing through the first control valve 81 and the second branch 84 and the third branch 85 to be cooled, and continues to circulate. Another part enters the battery heat exchange circuit 30 through the fourth branch 86, the temperature of the battery pack 32 is reduced, the high-temperature cooling liquid returns to the radiator 41 after passing through the first control valve 81 and the first branch 83 and the third branch 85 to be cooled, and continues to circulate.

[0087] Referring to Figure 4 As shown in the figure, the working mode three of the heat management system 100 in the embodiment of the utility model:

[0088] The ''a'' valve port and ''h'' valve port of the first control valve 81 are communicated, the ''i'' valve port and ''c'' valve port are communicated, the ''d'' valve port and ''f'' valve port are communicated, the ''e'' valve port and ''b'' valve port are communicated, the ''o'' valve port and ''q'' valve port of the second control valve 82 are communicated, the cooling liquid passes through the ''l'' pipe port and ''m'' pipe port of the multi-way pipe 70, is heated by the motor 21 waste heat or active heat production, and is heat-exchanged with the air conditioning system 10 by the motor 21 waste heat or active heat production, heat is released by using the condenser 61 to realize the heating passenger cabin function, and heat is adjusted by using the heat exchanger 51.

[0089] Cooling liquid flow direction: first water pump 23→motor controller 22→motor 21→first control valve 81→second one-way valve 851→first control valve 81→second water pump 31→battery pack 32→first control valve 81→heat exchanger 51→four-way pipe 88→first water pump 23;

[0090] Condenser 61→electric heater 62→warm air core 63→second control valve 82→third water pump 64→condenser 61;

[0091] Refrigerant flow direction: compressor 11→condenser 61→heat exchanger 51→compressor 11;

[0092] Compressor 11→heat exchanger 51→compressor 11;

[0093] The cooling liquid passes through the high-pressure heat exchange circuit 20, and the motor controller 22 and the motor 21 operation heat or waste heat are transmitted to the battery pack 32, so that the battery pack 32 is heated. The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, and is cooled to a low-temperature refrigerant at the condenser 61, the cooling liquid temperature on the cooling liquid side is increased, flows to the warm air core 63, releases heat to the environment, and blows into the passenger cabin through the warm air core 63, and is used for heating the passenger cabin. Among them, the refrigerant needs to absorb heat to return to the compressor 11 to maintain the circulation of the air conditioning system 10, and the heat of the high-pressure heat exchange circuit 20 is carried by the cooling liquid, and is heat-exchanged with the air conditioning system 10 at the heat exchanger 51, so that the refrigerant can be heat-absorbed to become a gas at the heat exchanger 51, to maintain the system circulation and adjust the temperature. Part of the refrigerant can not pass through the condenser 61 and directly return to the compressor 11, forming a hot gas bypass circuit.

[0094] Referring to Figure 5 The working mode four of the thermal management system 100 of the embodiment of the utility model is as follows:

[0095] The ''a'' valve port and ''f'' valve port of the first control valve 81 are communicated, the ''e'' valve port and ''j'' valve port are communicated, the ''i'' valve port and ''c'' valve port are communicated, the ''d'' valve port and ''h'' valve port are communicated, the ''o'' valve port and ''q'' valve port of the second control valve 82 are communicated, the ''o'' valve port and ''p'' valve port are communicated, the cooling liquid passes through the ''l'' pipe port and ''n'' pipe port of the multi-way pipe 70, absorbs the heat of the radiator circuit 40 and high-pressure heat exchange circuit 20 through the air conditioning system 10, and then releases heat through the condenser 61 to realize the functions of heating the battery pack 32 and the passenger cabin.

[0096] Cooling liquid flow direction: first water pump 23→motor controller 22→motor 21→first control valve 81→heat exchanger 51→first control valve 81→radiator 41→first water pump 23;

[0097] Condenser 61→electric heater 62→warm air core 63→second control valve 82→third water pump 64→condenser 61;

[0098] Condenser 61→electric heater 62→first control valve 81→second water pump 31→battery pack 32→first control valve 81→multi-way pipe 70→second control valve 82→third water pump 64→condenser 61;

[0099] Refrigerant flow direction: compressor 11→condenser 61→heat exchanger 51→compressor 11;

[0100] Compressor 11→heat exchanger 51→compressor 11;

[0101] The cooling liquid passes through the radiator circuit 40 and the high-pressure heat exchange circuit 20, transfers the heat of the radiator circuit 40 and the high-pressure heat exchange circuit 20 to the air conditioning system 10, and then releases heat through the condenser 61 to the battery pack 32 and the passenger cabin, so that the battery pack 32 and the passenger cabin are heated. The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant, and the temperature of the cooling liquid on the cooling liquid side is increased, part of which flows to the warm air core 63, releases heat to the environment, and is blown into the passenger cabin through the warm air core 63 to heat the passenger cabin. Another part flows to the battery heat exchange circuit 30 through the first control valve 81 to heat the battery pack 32. Among them, 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, and exchanges heat with the air conditioning system 10 at the heat exchanger 51, so that the refrigerant can absorb heat at the heat exchanger 51 to become a gas to maintain system circulation. Another part of the refrigerant can directly return to the compressor 11 without passing through the condenser 61, forming a hot gas bypass circuit.

[0102] Referring to Figure 6 The working mode five of the thermal management system 100 of the embodiment of the utility model is as follows:

[0103] The "a" port and "f" port of the first control valve 81 are communicated, the "e" port and "b" port are communicated, the "i" port and "c" port are communicated, the "d" port and "h" port are communicated, the "o" port and "q" port of the second control valve 82 are communicated, the "o" port and "p" port are communicated, the cooling liquid passes through the "l" port and "n" port of the multi-way pipe 70, absorbs the heat of the high-pressure heat exchange circuit 20 through the air conditioning system 10, and then releases heat through the condenser 61 to realize the functions of heating the battery pack 32 and the passenger cabin.

[0104] The cooling liquid flows in the following direction: the first water pump 23→the motor controller 22→the motor 21→the first control valve 81→the heat exchanger 51→the first control valve 81→the four-way pipe 88→the first water pump 23.

[0105] The condenser 61→the electric heater 62→the heater core 63→the second control valve 82→the third water pump 64→the condenser 61.

[0106] The condenser 61→the electric heater 62→the first control valve 81→the second water pump 31→the battery pack 32→the first control valve 81→the multi-way pipe 70→the second control valve 82→the third water pump 64→the condenser 61.

[0107] The refrigerant flows in the following direction: the compressor 11→the condenser 61→the heat exchanger 51→the compressor 11.

[0108] The compressor 11→the heat exchanger 51→the compressor 11.

[0109] The cooling liquid passes through the high-pressure heat exchange circuit 20, transfers the heat of the high-pressure components to the air conditioning system 10 through the heat exchanger 51, and then to the battery pack 32 and the passenger cabin through the condenser 61 in the air conditioning system 10, thereby realizing the heating of the battery pack 32 and the passenger cabin. The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which releases heat at the condenser 61 to become a low-temperature refrigerant, and the temperature of the cooling liquid on the cooling liquid side rises, part of which flows to the heater core 63, releases heat to the environment, and is blown into the passenger cabin through the heater core 63 for heating the passenger cabin. Another part flows to the battery heat exchange circuit 30 through the first control valve 81 to realize the heating of the battery pack 32. Among them, the refrigerant needs to absorb heat to return to the compressor 11 to maintain the circulation of the air conditioning system 10, and the heat of the high-pressure heat exchange circuit 20 is carried by the cooling liquid to exchange heat with the air conditioning system 10 at the heat exchanger 51, so that the refrigerant can absorb heat at the heat exchanger 51 to become a gas to maintain the system circulation. Another part of the refrigerant can directly return to the compressor 11 without passing through the condenser 61, forming a hot gas bypass circuit.

[0110] The "d" valve port and the "h" valve port of the first control valve 81 are communicated, the "i" valve port and the "c" valve port are communicated, the cooling liquid passes through the "l" pipe port and the "m" pipe port of the multi-way pipe 70, the battery heat exchange circuit 30 and the second branch 84 and the third branch 85 are communicated, and the function of uniform temperature of the battery pack 32 is realized.

[0111] The cooling liquid flows in the following direction: the battery pack 32 → the first control valve 81 → the second one-way valve 851 → the first control valve 81 → the second water pump 31 → the battery pack 32.

[0112] The cooling liquid circulates in the battery pack 32 and the second branch 84 and the third branch 85, the temperature uniformity between each cell or module of the battery pack 32 is maintained, and problems such as performance decline, safety hazards and shortened service life caused by excessive temperature difference are avoided.

[0113] Referring to Figure 7 The working mode six of the thermal management system 100 is as follows:

[0114] The "a" valve port and the "h" valve port of the first control valve 81 are communicated, the "i" valve port and the "b" valve port are communicated, the cooling liquid passes through the "l" pipe port and the "m" pipe port of the multi-way pipe 70, the high-pressure heat exchange circuit 20 and the second branch 84 and the third branch 85 are communicated, and the function of electric drive heat storage is realized.

[0115] The cooling liquid flows in the following direction: the first water pump 23 → the motor controller 22 → the motor 21 → the first control valve 81 → the multi-way valve → the second one-way valve 851 → the first control valve 81 → the first water pump 23.

[0116] The cooling liquid circulates in the high-pressure heat exchange circuit 20 and the second branch 84 and the third branch 85, the heat generated in the process of operation of the motor 21 and the motor controller 22 and the like is collected and stored by the cooling liquid, the heat storage is transmitted to the electric drive system in cold weather, preheating is realized, energy efficiency is improved, and vehicle performance is improved.

[0117] The "a" valve port and the "h" valve port of the first control valve 81 are communicated, the "i" valve port and the "b" valve port are communicated, the "o" valve port and the "p" valve port of the second control valve 82 are communicated, the cooling liquid passes through the "l" pipe port and the "m" pipe port of the multi-way pipe 70, the "l" pipe port and the "n" pipe port, and the high-pressure heat exchange circuit 20 is communicated with the condenser 61 through the first control valve 81 and the second control valve 82, and the function of electric drive preheating is realized.

[0118] The cooling liquid flows in the following direction: the first water pump 23 → the motor controller 22 → the motor 21 → the first control valve 81 → the multi-way valve → the second one-way valve 851 → the first control valve 81 → the first water pump 23.

[0119] First water pump 23 → motor controller 22 → motor 21 → first control valve 81 → multi-way valve → second control valve 82 → third water pump 64 → condenser 61 → electric heater 62 → first control valve 81 → first water pump 23.

[0120] In a low temperature environment, the lubricating oil, heat-conducting material, etc. of the electric drive system will become viscous, reducing the operating efficiency, and preheating can reduce the starting resistance and improve the efficiency, and can prevent mechanical damage or insulation failure caused by cold start, so that the electric drive system can quickly reach the design working condition, provide better power performance, and prolong the service life of the system.

[0121] The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which is cooled and changed into a low-temperature refrigerant at the condenser 61, and the temperature of the cooling liquid on the cooling liquid side is increased, and the heat is transferred to the high-pressure heat exchange circuit 20 through the third branch 85 and the first control valve 81, and the circulating cooling liquid is used to transfer heat to the electric drive system.

[0122] The "o" valve port and the "q" valve port of the second control valve 82 are communicated, and the air conditioning system 10 cooperates with the heating circuit 60 to realize the dehumidification function of the passenger compartment.

[0123] Cooling liquid flow direction: condenser 61 → electric heater 62 → warm air core 63 → second control valve 82 → third water pump 64 → condenser 61;

[0124] Refrigerant flow direction: compressor 11 → condenser 61 → evaporator 12 → compressor 11;

[0125] Compressor 11 → heat exchanger 51 → compressor 11.

[0126] The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas, which is cooled and changed into a low-temperature refrigerant at the condenser 61, and the temperature of the cooling liquid on the cooling liquid side is increased, and the heat is transferred to the high-pressure heat exchange circuit 20 through the third branch 85 and the first control valve 81, and the circulating cooling liquid is used to transfer heat to the electric drive system.

[0127] The vehicle according to the second aspect of the utility model comprises a thermal management system 100.

[0128] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the utility model.

[0129] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0130] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized by, Comprise: A first control valve (81) is communicated with a high-pressure heat exchange circuit (20), a battery heat exchange circuit (30), a radiator circuit (40) and a heat exchanger circuit (50), and selectively communicates 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); A heating circuit (60) is communicated with the first control valve (81) at one end; An air conditioning system (10) is heat exchanged with the heat exchanger circuit (50) and the heating circuit (60); A multi-pass pipe (70) is communicated with the first control valve (81) at at least three ends, and is communicated with one end of the heating circuit (60) at another end.

2. The thermal management system of claim 1, wherein, The multi-pass pipe (70) comprises: a first pipe opening and a second pipe opening; and The thermal management system further comprises: a first branch (83) connected between the first pipe opening and one valve opening of the first control valve (81), and a second branch (84) connected between the second pipe opening and another valve opening of the first control valve (81).

3. The thermal management system of claim 2, wherein, The multi-pass pipe (70) further comprises: a third pipe opening and a fourth pipe opening; and The thermal management system further comprises: a third branch (85) communicated with the third pipe opening at one end and with the first control valve (81) at the other end, and the fourth pipe opening is communicated with one end of the heating circuit (60).

4. The thermal management system of claim 3, wherein, A first check valve (831) is arranged on the first branch (83) and configured to flow cooling liquid from the first control valve (81) to the multi-pass pipe (70); and A second check valve (851) is arranged on the third branch (85) and configured to flow cooling liquid from the third pipe opening to the first control valve (81) and / or the heating circuit (60).

5. The thermal management system of claim 1, wherein, The heating circuit (60) comprises: 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 the multi-pass pipe (70) and one end of the warm air core (63), 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 of claim 5, wherein, Further comprise: A second control valve (82) is communicated with the condenser (61) at one end, with the multi-pass pipe (70) at another end, and with the warm air core (63) at yet another end.

7. The thermal management system of claim 1, wherein, The heat exchanger circuit (50) comprises a heat exchanger (51), two ends of the heat exchanger (51) are communicated with the first control valve (81) respectively, and the air conditioning system (10) is communicated with the heat exchanger (51); and The heating circuit (60) comprises 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; and The air conditioning system (10) comprises a compressor (11) and an evaporator (12), the compressor (11), the evaporator (12) and the condenser (61) are connected in series with each other. The heat exchanger (51) and the evaporator (12) are connected in parallel with each other and connected in series with the condenser (61).

8. The thermal management system of claim 1, wherein, The radiator circuit (40) comprises a radiator (41), one end of the radiator (41) is communicated with the first control valve (81); and The high-pressure heat exchange circuit (20) comprises a motor (21), a motor controller (22) and a first water pump (23), the motor (21), the motor controller (22) and the first water pump (23) are connected in series with each other; and The thermal management system further comprises a fourth branch (86), one end of the fourth branch (86) is communicated with the first control valve (81), and the radiator (41) and the first water pump (23) are connected in parallel with each other and communicated with the other end of the fourth branch (86).

9. The thermal management system of claim 1, wherein, Further comprising: An overflow tank (87) and a four-way pipe (88), the four-way pipe (88) is communicated with the radiator circuit (40), the first control valve (81), the high-pressure heat exchange circuit (20) and the overflow tank (87) respectively.

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

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