Thermal management integrated module of electric automobile

Abstract

The invention belongs to the technical field of automobile heat management, and relates to an electric automobile heat management integrated module. Comprising a six-way water valve, an expansion kettle, a battery cooler, a gas-liquid separator, a refrigerant valve, a refrigerant temperature sensor, a refrigerant pressure sensor, a water side manifold plate and a refrigerant manifold plate, wherein the refrigerant manifold plate is provided with a first refrigerant pipeline, a second refrigerant pipeline, a third refrigerant pipeline, a fourth refrigerant pipeline, a fifth refrigerant pipeline and a sixth refrigerant pipeline; the water side manifold plate comprises an upper plate, a middle plate and a lower plate, and a battery water pump, an electric drive water pump and a six-way water valve are installed on one side of the upper plate. The multi-pipeline valve is used for connecting loops of the battery, the electric drive and the passenger compartment to form an integrated large circulation loop, and energy fine management is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile thermal management, and in particular relates to an electric vehicle thermal management integrated module. Background Art

[0002] As the automotive industry moves towards electrification and intelligence, the complexity of vehicle energy management is gradually increasing, and the requirements for vehicle energy management systems are also increasing. In order to more effectively meet the needs of electric vehicles, integrated thermal management systems have become an obvious trend.

[0003] In the past, electric vehicles usually adopted traditional distributed thermal management systems. The characteristics of this system are that the battery, motor control and air conditioning system circuits are independent of each other, and each has an independent temperature control system and piping system. However, this distributed structure has the problems of low energy utilization efficiency and low integration. The distributed layout structure is scattered, the piping is complex, and there are many parts, which also leads to high costs. Therefore, whether it is possible to provide an electric vehicle thermal management integrated module that uses multi-pipeline valves to connect some or all of the circuits in the battery, motor control and air conditioning systems to form an integrated large circulation loop to achieve refined energy management is a technical problem that needs to be solved by the present invention. Summary of the invention

[0004] In view of this, the present invention provides an electric vehicle thermal management integrated module.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: An electric vehicle thermal management integrated module includes a six-way water valve, an expansion kettle, a battery cooler, a gas-liquid separator, a water side manifold and a refrigerant manifold stacked together, a refrigerant valve, a refrigerant temperature sensor, and a refrigerant pressure sensor: The refrigerant branch plate is provided with a first refrigerant pipeline, a second refrigerant pipeline, a third refrigerant pipeline, a fourth refrigerant pipeline, a fifth refrigerant pipeline and a sixth refrigerant pipeline; the liquid inlet end of the second refrigerant pipeline is connected to the liquid outlet port of the HVAC component of the automobile, and the liquid outlet end of the first refrigerant pipeline is connected to the liquid inlet port of the HVAC component through the gas-liquid separator and the compressor in sequence; the second refrigerant pipeline is also connected to the liquid inlet end of the outdoor heat exchanger through the first electronic expansion valve, and the liquid outlet end of the outdoor heat exchanger is connected to the liquid inlet end of the fifth refrigerant pipeline; The water side manifold comprises an upper plate, a middle plate and a lower plate which are stacked and installed, and a battery water pump, an electric drive water pump and the six-way water valve are installed on one side of the upper plate; The refrigerant valve component includes a first solenoid valve, a second solenoid valve, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a first refrigerant check valve and a second refrigerant check valve.

[0006] Furthermore, the liquid inlet end of the second refrigerant pipeline is connected to the liquid outlet of the HVAC component of the automobile; the liquid outlet end of the second refrigerant pipeline is connected to the fourth refrigerant pipeline through the first solenoid valve; The liquid outlet end of the fourth refrigerant pipeline is in contact with a liquid inlet port of the battery cooler, and a second electronic expansion valve is installed in series on the fourth refrigerant pipeline; The fourth refrigerant pipeline is connected to the third refrigerant pipeline in front of the liquid inlet end of the second electronic expansion valve, the third refrigerant pipeline is connected in series with a third electronic expansion valve, and the liquid outlet of the third refrigerant pipeline is connected to the first refrigerant pipeline; The first refrigerant pipeline contacts a liquid outlet port of the battery cooler, the liquid outlet end of the first refrigerant pipeline is connected to the gas-liquid separator, and the liquid outlet end of the gas-liquid separator is connected to the liquid inlet end of the HVAC component through the compressor.

[0007] Furthermore, the liquid inlet end of the sixth refrigerant pipeline is connected to the fifth refrigerant pipeline, a second solenoid valve is installed on the sixth refrigerant pipeline, and the liquid inlet end of the gas-liquid separator is connected to the sixth refrigerant pipeline; the middle position of the fifth refrigerant pipeline is also connected to the third refrigerant pipeline through a first refrigerant one-way valve.

[0008] Furthermore, the upper plate is provided with a second water side pipe, a third water side pipe, a fourth water side pipe and a fifth water side pipe; the lower plate is provided with a sixth water side pipe and a seventh water side pipe; The liquid inlet end of the second water-side pipeline is the battery outlet, the battery outlet is connected to the liquid outlet end of the battery, and the liquid outlet end of the second water-side pipeline is connected to the third valve port of the six-way water valve; the first valve port of the six-way water valve is connected to the liquid inlet end of the fourth water-side pipeline, the liquid outlet end of the fourth water-side pipeline is connected to the fifth water-side pipeline through a battery water pump, and the liquid outlet end of the fifth water-side pipeline is a heating inlet, the heating inlet is connected to a heater, and the other end of the heater is connected to the heating outlet installed on the middle plate; The heating outlet of the middle plate is connected to the liquid inlet end of the sixth water-side pipe of the lower plate, the liquid outlet end of the sixth water-side pipe is connected to the seventh water-side pipe through the battery cooler, the liquid outlet end of the seventh water-side pipe is connected to the liquid inlet end of the third water-side pipe on the upper plate, the liquid outlet end of the third water-side pipe is the battery inlet, and the battery inlet is connected to the liquid inlet end of the battery; the third water-side pipe is also connected to the second valve port of the six-way water valve.

[0009] Furthermore, the upper plate is provided with a first water side pipe and an eleventh water side pipe; the lower plate is provided with an eighth water side pipe, a ninth water side pipe and a tenth water side pipe; The fourth valve port of the six-way water valve is connected to the liquid inlet of the first water-side pipeline, the liquid outlet of the first water-side pipeline is connected to the eleventh water-side pipeline through the electric drive water pump, the liquid outlet of the eleventh water-side pipeline is the electric drive inlet, and the electric drive inlet is connected to the liquid inlet of the electric drive module; The liquid outlet of the electric drive module is connected to the electric drive outlet, the electric drive outlet is the liquid inlet of the tenth water side pipeline, and the liquid outlet of the tenth water side pipeline is connected to the fifth valve port of the six-way water valve; The liquid outlet end of the electric drive module is also connected to the heat dissipation module, and the liquid outlet end of the heat dissipation module is connected to the heat dissipation outlet, and the heat dissipation outlet is the liquid inlet end of the eighth water side pipe. The eighth water side pipe is connected to the ninth water side pipe through an expansion kettle, and the liquid outlet end of the ninth water side pipe is connected to the sixth valve port of the six-way water valve.

[0010] Furthermore, a water temperature sensor is installed on the sixth water-side pipe; the refrigerant pressure sensor is installed on the liquid inlet end of the second refrigerant pipe; the refrigerant temperature sensor is installed on the fifth refrigerant pipe; and the refrigerant pressure and temperature sensor is installed on the gas-liquid separator.

[0011] Furthermore, a second refrigerant one-way valve is installed on the sixth refrigerant pipeline.

[0012] The beneficial effects of the present invention are: The thermal management integrated module described in this application can realize three heat cycles, electric drive cycle, battery cycle and passenger compartment cycle, and use a six-way water valve to connect multiple pipes, so that the three relatively independent heat cycles can circulate independently and in series, and the overall thermal management can be coordinated to greatly improve the energy utilization efficiency. By integrating the electric drive cycle, the passenger compartment thermal management cycle and the battery thermal cycle, the effective utilization and transfer of thermal energy can be achieved, and the overall thermal management efficiency can be improved. The integrated module can reduce the transmission path and conversion links of thermal energy, reduce energy loss, and improve energy utilization. Through the regulation of the six-way water valve, the thermal energy distribution and flow of each cycle can be flexibly adjusted to achieve precise thermal management control and improve thermal management performance. Integrating multiple cycles together can reduce the number of components such as pipelines and valves, simplify the system structure, and reduce manufacturing costs and maintenance complexity. The integrated module can also reduce leakage and loss during the transmission of thermal energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall front view of the present invention.

[0014] Figure 2 It is a schematic diagram of the overall rear view of the present invention.

[0015] Figure 3 It is a schematic diagram of a six-way water valve of the present invention.

[0016] Figure 4 It is a schematic diagram of the refrigerant manifold of the present invention.

[0017] Figure 5 It is a front schematic diagram of the water side branch plate of the present invention.

[0018] Figure 6 It is a schematic diagram of the back side of the water side branch plate of the present invention.

[0019] Figure 7 It is a schematic diagram of module connection of the present invention.

[0020] Figure 8 It is a front schematic diagram of the coolant flow direction of mode 1 of the present invention.

[0021] Fig. 9 It is a schematic diagram of the back side of the coolant flow direction of mode 1 of the present invention.

[0022] Fig.10 It is a front schematic diagram of the coolant flow direction of mode 2 of the present invention.

[0023] Fig.11 It is a schematic diagram of the back side of the coolant flow direction of mode 2 of the present invention.

[0024] Fig.12 It is a front schematic diagram of the coolant flow direction of mode three of the present invention.

[0025] Fig.13 It is a schematic diagram of the back side of the coolant flow direction of mode 3 of the present invention.

[0026] Fig.14 It is a front schematic diagram of the coolant flow direction of mode 4 of the present invention.

[0027] Fig.15 It is a schematic diagram of the back side of the coolant flow direction of mode 4 of the present invention.

[0028] Fig.16 It is a front schematic diagram of the coolant flow direction of mode 5 of the present invention.

[0029] Fig.17 It is a schematic diagram of the back side of the coolant flow direction of mode 5 of the present invention.

[0030] Fig.18 It is a front schematic diagram of the coolant flow direction of mode 6 of the present invention.

[0031] Fig.19 It is a schematic diagram of the back side of the coolant flow direction of mode 6 of the present invention.

[0032] Fig. 20 It is a schematic diagram of splitting the water side branch plate of the present invention.

[0033] in Figure 8-19 The structures all conceal the refrigerant branch plate.

[0034] Figures indicate: 1: six-way water valve, 2: expansion kettle, 3: battery cooler, 4: gas-liquid separator, 5: water side manifold, 6: refrigerant manifold, 7: upper plate, 8: middle plate, 9: lower plate, 10: battery water pump, 11: electric drive water pump, 12: first water side pipeline, 13: second water side pipeline, 14: third water side pipeline, 15: fourth water side pipeline, 16: fifth water side pipeline, 17: sixth water side pipeline, 18: seventh water side pipeline, 19: eighth water side pipeline, 20: ninth water side pipeline, 21: tenth water side pipeline, 22: eleventh water side pipeline, 23: battery, 24: battery outlet, 25: heating inlet, 26: heater, 27: heating outlet, 28: battery inlet, 29: electric drive inlet, 30: electric drive outlet, 31: electric drive module, 32: heat dissipation outlet, 33: heat dissipation module, 34: first refrigerant pipeline, 35: second refrigerant pipeline, 36: third refrigerant pipeline, 37: fourth refrigerant pipeline, 38: fifth refrigerant pipeline, 39: sixth refrigerant pipeline, 40: HVAC component, 41: liquid inlet end of outdoor heat exchanger, 42: liquid outlet end of outdoor heat exchanger, 43: first solenoid valve, 44: second solenoid valve, 45: first electronic expansion valve, 46: second electronic expansion valve, 47: third electronic expansion valve, 48: first refrigerant one-way valve, 49: second refrigerant one-way valve, 50: water temperature sensor, 51: refrigerant pressure sensor, 52: refrigerant temperature sensor, 53: refrigerant pressure temperature sensor, 54: outdoor heat exchanger, 55: compressor. DETAILED DESCRIPTION

[0035] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0037] It should be noted that in the present application, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0038] like Figure 1-19As shown, an electric vehicle thermal management integrated module includes a six-way water valve 1, an expansion kettle 2, a battery cooler 3, a gas-liquid separator 4, a water side branch plate 5 and a refrigerant branch plate 6 stacked together front and back, a refrigerant valve, a refrigerant temperature sensor 52, and a refrigerant pressure sensor 51. The present application connects different pipes through the six-way water valve 1 to achieve different functions, including: temperature equalization, cooling and heating of the battery 23; heat dissipation of the electric drive module 31; waste heat utilization of the battery 23 and the electric drive module 31; cooling, heating, and ventilation of the passenger compartment.

[0039] The refrigerant valve components include a first solenoid valve 43 , a second solenoid valve 44 , a first electronic expansion valve 45 , a second electronic expansion valve 46 , a third electronic expansion valve 47 , a first refrigerant check valve 48 and a second refrigerant check valve 49 .

[0040] The water side branch plate 5 comprises an upper plate 7, a middle plate 8 and a lower plate 9 which are stacked and installed. A battery water pump 10, an electric drive water pump 11 and the six-way water valve 1 are installed on one side of the upper plate 7.

[0041] In order to achieve temperature uniformity, cooling and heating of the battery 23, the structure adopted by the present invention is: The upper plate 7 is provided with a second water side pipe 13 , a third water side pipe 14 , a fourth water side pipe 15 and a fifth water side pipe 16 ; the lower plate 9 is provided with a sixth water side pipe 17 and a seventh water side pipe 18 .

[0042] The battery outlet 24 is connected to the liquid outlet of the battery 23. The liquid inlet of the second water side pipe 13 is the battery outlet 24, and the liquid outlet of the second water side pipe 13 is connected to the third valve port of the six-way water valve 1.

[0043] The first valve port of the six-way water valve 1 is connected to the liquid inlet end of the fourth water side pipe 15, and the liquid outlet end of the fourth water side pipe 15 is connected to the fifth water side pipe 16 through the battery water pump 10. The liquid outlet end of the fifth water side pipe 16 is a heating inlet 25, and the heating inlet is connected to the heater 26. The other end of the heater 26 is connected to the heating outlet 27 installed on the middle plate 8.

[0044] The heating outlet 27 of the middle plate 8 is connected to the liquid inlet end of the sixth water side pipe 17 of the lower plate 9, and the liquid outlet end of the sixth water side pipe 17 is connected to the seventh water side pipe 18 through the battery cooler 3. The liquid outlet end of the seventh water side pipe 18 is connected to the liquid inlet end of the third water side pipe 14 on the upper plate 7, and the liquid outlet end of the third water side pipe 14 is the battery inlet 28, and the battery inlet 28 is connected to the liquid inlet end of the battery 23; the third water side pipe 14 is also connected to the second valve port of the six-way water valve 1.

[0045] In order to achieve heat dissipation or waste heat utilization of the electric drive module 31, the structure adopted by the present invention is: The upper plate 7 is also provided with a first water side pipe 12 and an eleventh water side pipe 22 ; the lower plate 9 is also provided with an eighth water side pipe 19 , a ninth water side pipe 20 and a tenth water side pipe 21 .

[0046] The fourth valve port of the six-way water valve 1 is connected to the liquid inlet end of the first water side pipe 12, and the liquid outlet end of the first water side pipe 12 is connected to the eleventh water side pipe 22 through the electric drive water pump 11, and the liquid outlet end of the eleventh water side pipe 22 is the electric drive inlet 29, and the electric drive inlet 29 is connected to the liquid inlet end of the electric drive module 31.

[0047] The liquid outlet end of the electric drive module 31 is connected to the electric drive outlet 30 , and the electric drive outlet 30 is the liquid inlet end of the tenth water side pipe 21 . The liquid outlet end of the tenth water side pipe 21 is connected to the fifth valve port of the six-way water valve 1 .

[0048] The liquid outlet end of the electric drive module 31 is also connected to the heat dissipation module 33, and the liquid outlet end of the heat dissipation module 33 is connected to the heat dissipation outlet 32. The heat dissipation outlet 32 ​​is the liquid inlet end of the eighth water side pipe 19. The liquid outlet end of the eighth water side pipe 19 is connected to the expansion kettle. The liquid outlet end of the expansion kettle is connected to the ninth water side pipe 20. The liquid outlet end of the ninth water side pipe 20 is connected to the sixth valve port of the six-way water valve 1.

[0049] In order to realize cooling, heating or ventilation of the passenger compartment, the structure adopted by the present invention is: The refrigerant branch plate 6 is provided with a first refrigerant pipe 34, a second refrigerant pipe 35, a third refrigerant pipe 36, a fourth refrigerant pipe 37, a fifth refrigerant pipe 38 and a sixth refrigerant pipe 39; the liquid inlet end of the second refrigerant pipe 35 is connected to the liquid outlet of the HVAC component 40 of the automobile, and the liquid outlet end of the first refrigerant pipe 34 is connected to the liquid inlet of the HVAC component 40 through the gas-liquid separator 4 and the compressor in sequence; the second refrigerant pipe is connected to the liquid inlet end 41 of the outdoor heat exchanger through the first electronic expansion valve, and the liquid outlet end 42 of the outdoor heat exchanger is connected to the liquid inlet end of the fifth refrigerant pipe 38.

[0050] The liquid inlet end of the second refrigerant pipe 35 is connected to the liquid outlet of the HVAC component 40 of the automobile; the liquid outlet end of the second refrigerant pipe 35 is connected to the fourth refrigerant pipe 37 through the first solenoid valve 43.

[0051] The liquid outlet of the fourth refrigerant pipe 37 is connected to a liquid inlet port of the battery cooler 3. It should be noted that there is no physical contact between the fourth refrigerant pipe and the first refrigerant pipe and the interface of the battery cooler, and only energy is delivered through the battery cooler. A second electronic expansion valve 46 is installed in series on the fourth refrigerant pipe 37.

[0052] The fourth refrigerant pipe 37 is connected to the third refrigerant pipe 36 in front of the liquid inlet end of the second electronic expansion valve 46 . The third electronic expansion valve 47 is connected in series to the third refrigerant pipe 36 . The liquid outlet of the third refrigerant pipe 36 is connected to the first refrigerant pipe 34 .

[0053] The first refrigerant pipe 34 is connected to a liquid outlet of the battery cooler 3 , the liquid outlet end of the first refrigerant pipe 34 is connected to the gas-liquid separator 4 , and the liquid outlet end of the gas-liquid separator 4 is connected to the liquid inlet end of the HVAC component 40 .

[0054] The second refrigerant pipe 35 is also connected to the expansion kettle 2 through the first electronic expansion valve 45; the liquid outlet 42 of the outdoor heat exchanger is connected to the liquid inlet of the fifth refrigerant pipe 38, the liquid inlet of the sixth refrigerant pipe 39 is connected to the fifth refrigerant pipe 38, the sixth refrigerant pipe 39 is installed with a second solenoid valve 44, the liquid inlet of the gas-liquid separator 4 is connected to the sixth refrigerant pipe 39; the middle position of the fifth refrigerant pipe 38 is also connected to the third refrigerant pipe 36 through the first refrigerant one-way valve 48. The sixth refrigerant pipe 39 is also installed with a second refrigerant one-way valve 49.

[0055] In the present invention, the following monitoring devices are also provided: a water temperature sensor 50 is installed on the sixth water side pipe 17; a refrigerant pressure sensor 51 is installed on the liquid inlet end of the second refrigerant pipe 35; a refrigerant temperature sensor 52 is installed on the fifth refrigerant pipe 38; and a refrigerant pressure temperature sensor 53 is installed on the gas-liquid separator 4.

[0056] like Figure 2 As shown, the six-way water valve 1 used in the present invention is a disclosed structure, which includes a total of nine end surface flow passages, which are numbered as follows: 1, 1, 2, 3, 4, 4, 4, 5, 6, two end surface flow passages numbered 1 are connected, and three end surface flow passages numbered 4 are connected. End surface flow passage 1 corresponds to the first valve port, end surface flow passage 2 corresponds to the second valve port, end surface flow passage 3 corresponds to the third valve port, end surface flow passage 4 corresponds to the fourth valve port, end surface flow passage 5 corresponds to the fifth valve port, and end surface flow passage 6 corresponds to the sixth valve port.

[0057] The working mode and principle of the electric vehicle thermal management integrated module described in the present invention are as follows.

[0058] Mode 1: Electric drive heat dissipation, battery 23 temperature equalization, passenger compartment cooling. At this time, the connection mode of the six-way water valve 1 is: the end face flow channels numbered 3→1 and 6→4 flow.

[0059] When the electric drive dissipates heat, the coolant flowing through the electric drive module 31 flows toward the heat dissipation module 33, the liquid outlet of the heat dissipation module 33 is connected with the heat dissipation outlet 32, and then the coolant passes through the eighth water side pipe 19, the expansion kettle 2 and the ninth water side pipe 20 in sequence to be connected to the sixth valve port of the six-way water valve 1; in this mode, the sixth valve port is connected with the fourth valve port; the coolant enters from the sixth valve port and flows out from the fourth valve port, and then passes through the first water side pipe 12, the electric drive water pump 11 and the eleventh water side pipe 22 in sequence, and then flows out from the electric drive inlet 29 to the electric drive module 31, thereby realizing the thermal circulation of the coolant on the electric drive module 31, and then achieving the purpose of heat dissipation of the electric drive module 31, wherein the heat dissipation module 33 is responsible for the heat dissipation and cooling of the coolant flowing through.

[0060] When the battery 23 is at an even temperature, the coolant flowing through the battery 23 passes through the battery outlet 24, the second water side pipe 13, the third valve port of the six-way water valve 1, the first valve port of the six-way water valve 1, the fourth water side pipe 15, the battery water pump 10, the fifth water side pipe 16, and the heating inlet 25 in sequence, and then flows to the heater 26. The coolant after flowing through the heater 26 passes through the heating inlet 25, the sixth water side pipe 17, the battery cooler 3, the seventh water side pipe 18, the third water side pipe 14, and the battery inlet 28 again before entering the battery 23. During this cycle, the battery cooler 3 and the heater 26 are not working. The coolant flowing through the battery 23 enters from the third valve port of the six-way water valve 1, flows out from the first valve port of the six-way water valve 1, and then passes through the heater 26 and the battery cooler 3 in sequence. The coolant is in a constant temperature state and then flows back to the battery 23 so that the battery 23 is in an even temperature state.

[0061] When the passenger compartment is cooled, the refrigerant flowing out of the built-in condenser of the HVAC component 40 flows from the liquid inlet end of the second refrigerant pipe 35 and passes through the first electronic expansion valve 45 and the liquid inlet end 41 of the outdoor heat exchanger to the outdoor heat exchanger 54 for heat exchange and condensation, and then circulates back to the built-in evaporator of the HVAC component 40 through the liquid outlet end 42 of the outdoor heat exchanger, the fifth refrigerant pipe 38, the first refrigerant check valve 48, the second electronic expansion valve 46, the HVAC component 40, the gas-liquid separator 4, and the compressor 55. After the refrigerant flows through the built-in evaporator, the temperature in the passenger compartment is reduced, thereby achieving the cooling of the passenger compartment. In this process, the first electronic expansion valve 45, the first refrigerant check valve 48, and the second electronic expansion valve 46 work; the second solenoid valve 44 and the third electronic expansion valve 47 are closed.

[0062] Mode 2: Utilization of waste heat from electric drive, heating of battery 23 and ventilation of passenger compartment. At this time, the connection mode of the six-way water valve 1 is: the end face flow passages numbered 5→1 and 3→4 flow.

[0063] In this mode, the waste heat utilization of the electric drive and the equalization of the temperature of the battery 23 are in the same thermal management cycle. After flowing through the electric drive module 31, the heat-carrying coolant passes through the fifth valve port, the first valve port, the battery water pump 10, the heater 26, and the battery cooler 3 of the six-way water valve 1 to reach the battery 23; during this process, the battery cooler 3 and the heater 26 do not work. After flowing through the battery 23, the coolant passes through the third valve port, the fourth valve port, and the electric drive water pump 11 of the six-way water valve 1 to enter the electric drive module 31, and the circulation of the above-mentioned coolant realizes the thermal management cycle of waste heat utilization of the electric drive and heating of the battery 23.

[0064] When the passenger compartment is ventilated, the first solenoid valve 43 , the second solenoid valve 44 , the first electronic expansion valve 45 , the second electronic expansion valve 46 , the third electronic expansion valve 47 , the first refrigerant one-way valve 48 , and the second refrigerant one-way valve 49 are all closed.

[0065] Mode three: electric drive heat dissipation, battery 23 cooling and passenger compartment cooling. At this time, the connection mode of the six-way water valve 1 is: the end face flow channels numbered 6→4 and 3→1 flow.

[0066] At this time, the electric drive self-circulates, connecting to the expansion kettle and the heat dissipation module for heat dissipation. The battery is connected to the battery cooler for cooling.

[0067] Among them, the working mode of passenger compartment cooling is the same as that in working mode 1, so no additional details are given.

[0068] Mode 4: Utilization of waste heat from electric drive, equalization of temperature of battery 23 and ventilation of passenger compartment. At this time, the connection mode of the six-way water valve 1 is: 5→1, 2→4 end face flow channel openings flow.

[0069] In this mode, only the battery water pump is turned on in the battery circuit to average the internal temperature of the battery and reduce the temperature difference. In this mode, the battery cooler 3, multiple electronic expansion valves and the compressor 55 are in a closed state. The coolant flowing through the electric drive module 31 passes through the tenth water side pipeline 21, the fifth valve port and the first valve port of the six-way water valve 1, the battery water pump 10, the heater 26 to the battery cooler 3 in sequence. After passing through the battery cooler 3, it passes through the seventh water side pipeline 18, the liquid inlet end of the third water side pipeline 14, the second valve port and the fourth valve port of the six-way water valve 1, and the electric drive water pump 11 in sequence to enter the electric drive module 31, and the waste heat utilization of the electric drive module 31 is completed in sequence.

[0070] When the passenger compartment is ventilated, the first solenoid valve 43 , the second solenoid valve 44 , the first electronic expansion valve 45 , the second electronic expansion valve 46 , the third electronic expansion valve 47 , the first refrigerant one-way valve 48 , and the second refrigerant one-way valve 49 are all closed.

[0071] Mode 5: Utilization of waste heat from electric drive, equalization of temperature of battery 23 and heating of passenger compartment. At this time, the connection mode of the six-way water valve 1 is: 2→1, 5→4 end face flow channel openings flow.

[0072] The electric drive circulates independently, and the coolant flowing through the electric drive module 31 passes through the fifth valve port and the fourth valve port of the six-way water valve 1 in sequence, and then flows through the electric drive water pump 11 again through the electric drive module 31. The coolant does not flow through the battery 23, and the battery 23 is set to a uniform temperature.

[0073] When heating the passenger compartment, the passenger compartment heat pump heating mode is adopted in this embodiment, and the heat circulation method is as follows: the refrigerant flowing out of the built-in condenser of the HVAC component 40 flows from the liquid inlet end of the second refrigerant pipe 35 and passes through the first electronic expansion valve 45, the liquid inlet end 41 of the outdoor heat exchanger to the outdoor heat exchanger 54, and then passes through the liquid outlet end 42 of the outdoor heat exchanger, the fifth refrigerant pipe 38, the sixth refrigerant pipe 39, the second refrigerant check valve 49, the gas-liquid separator 4, the pressure temperature sensor, and the compressor 55 to circulate back to the built-in condenser of the HVAC component 40. After the refrigerant flows through the built-in condenser, the temperature in the passenger compartment will increase, thereby achieving heating of the passenger compartment. In this process, the second refrigerant check valve, the first electronic expansion valve, and the second solenoid valve are working; the first refrigerant check valve, the first solenoid valve, the second electronic expansion valve, and the third electronic expansion valve are closed.

[0074] Mode 6: No electric drive demand, battery 23 heating and passenger compartment heating. At this time, the connection mode of the six-way water valve 1: 3→1, 5→4 end face flow channels flow.

[0075] In this mode, the electric drive is an independent cycle, and the coolant flowing through the electric drive module 31 passes through the fifth valve port and the fourth valve port of the six-way water valve 1 in sequence, and then flows through the electric drive water pump 11 and flows through the electric drive module 31 again. The heating of the battery 23 and the heating of the passenger compartment are in the same heat cycle.

[0076] The coolant flowing out of the battery 23 passes through the third valve port and the first valve port of the six-way water valve 1 in sequence. The heater 26 works, and the coolant flows through the heater 26 and is heated and then circulates back to the battery, thereby heating the battery 23 .

[0077] After the heated coolant flows through the heater 26 and flows to the battery cooler 3, the refrigerant in the battery cooler 3 evaporates and absorbs heat from the coolant, and brings the heat to the gas-liquid separator 4 to participate in the subsequent refrigerant circulation. The heated refrigerant passes through the compressor 55 and enters the built-in condenser of the HVAC component 40 to heat the passenger compartment. The refrigerant flowing out of the HVAC component 40 passes through the first solenoid valve 43 and the third electronic expansion valve 47 and continues to exchange heat with the heated coolant circulating in the battery cooler 3, and then continues to complete the heat cycle of the next heating operation.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An electric vehicle thermal management integrated module, comprising a six-way water valve, an expansion kettle, a battery cooler, a gas-liquid separator, a water side manifold and a refrigerant manifold stacked together, a refrigerant valve, a refrigerant temperature sensor and a refrigerant pressure sensor, characterized in that: The refrigerant branch plate is provided with a first refrigerant pipeline, a second refrigerant pipeline, a third refrigerant pipeline, a fourth refrigerant pipeline, a fifth refrigerant pipeline and a sixth refrigerant pipeline; the liquid inlet end of the second refrigerant pipeline is connected to the liquid outlet port of the HVAC component of the automobile, and the liquid outlet end of the first refrigerant pipeline is connected to the liquid inlet port of the HVAC component through the gas-liquid separator and the compressor in sequence; the second refrigerant pipeline is also connected to the liquid inlet end of the outdoor heat exchanger through the first electronic expansion valve, and the liquid outlet end of the outdoor heat exchanger is connected to the liquid inlet end of the fifth refrigerant pipeline; The water side manifold comprises an upper plate, a middle plate and a lower plate which are stacked and installed, and a battery water pump, an electric drive water pump and the six-way water valve are installed on one side of the upper plate; The refrigerant valve component includes a first solenoid valve, a second solenoid valve, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a first refrigerant check valve and a second refrigerant check valve.

2. An electric vehicle thermal management integrated module according to claim 1, characterized in that: The liquid inlet end of the second refrigerant pipeline is connected to the liquid outlet of the HVAC component of the automobile; the liquid outlet end of the second refrigerant pipeline is connected to the fourth refrigerant pipeline through the first solenoid valve; The liquid outlet end of the fourth refrigerant pipeline is in contact with a liquid inlet port of the battery cooler, and a second electronic expansion valve is installed in series on the fourth refrigerant pipeline; The fourth refrigerant pipeline is connected to the third refrigerant pipeline in front of the liquid inlet end of the second electronic expansion valve, the third refrigerant pipeline is connected in series with a third electronic expansion valve, and the liquid outlet of the third refrigerant pipeline is connected to the first refrigerant pipeline; The first refrigerant pipeline contacts a liquid outlet port of the battery cooler, the liquid outlet end of the first refrigerant pipeline is connected to the gas-liquid separator, and the liquid outlet end of the gas-liquid separator is connected to the liquid inlet end of the HVAC component through the compressor.

3. An electric vehicle thermal management integrated module according to claim 2, characterized in that: The liquid inlet end of the sixth refrigerant pipeline is connected to the fifth refrigerant pipeline, a second solenoid valve is installed on the sixth refrigerant pipeline, and the liquid inlet end of the gas-liquid separator is connected to the sixth refrigerant pipeline; the middle position of the fifth refrigerant pipeline is also connected to the third refrigerant pipeline through a first refrigerant one-way valve.

4. The electric vehicle thermal management integrated module according to claim 3, characterized in that: The upper plate is provided with a second water side pipe, a third water side pipe, a fourth water side pipe and a fifth water side pipe; the lower plate is provided with a sixth water side pipe and a seventh water side pipe; The liquid inlet end of the second water-side pipeline is the battery outlet, the battery outlet is connected to the liquid outlet end of the battery, and the liquid outlet end of the second water-side pipeline is connected to the third valve port of the six-way water valve; the first valve port of the six-way water valve is connected to the liquid inlet end of the fourth water-side pipeline, the liquid outlet end of the fourth water-side pipeline is connected to the fifth water-side pipeline through a battery water pump, and the liquid outlet end of the fifth water-side pipeline is a heating inlet, the heating inlet is connected to a heater, and the other end of the heater is connected to the heating outlet installed on the middle plate; The heating outlet of the middle plate is connected to the liquid inlet end of the sixth water-side pipe of the lower plate, the liquid outlet end of the sixth water-side pipe is connected to the seventh water-side pipe through the battery cooler, the liquid outlet end of the seventh water-side pipe is connected to the liquid inlet end of the third water-side pipe on the upper plate, the liquid outlet end of the third water-side pipe is the battery inlet, and the battery inlet is connected to the liquid inlet end of the battery; the third water-side pipe is also connected to the second valve port of the six-way water valve.

5. The electric vehicle thermal management integrated module according to claim 4, characterized in that: The upper plate is also provided with a first water side pipe and an eleventh water side pipe; the lower plate is also provided with an eighth water side pipe, a ninth water side pipe and a tenth water side pipe; The fourth valve port of the six-way water valve is connected to the liquid inlet of the first water-side pipeline, the liquid outlet of the first water-side pipeline is connected to the eleventh water-side pipeline through the electric drive water pump, the liquid outlet of the eleventh water-side pipeline is the electric drive inlet, and the electric drive inlet is connected to the liquid inlet of the electric drive module; The liquid outlet of the electric drive module is connected to the electric drive outlet, the electric drive outlet is the liquid inlet of the tenth water side pipeline, and the liquid outlet of the tenth water side pipeline is connected to the fifth valve port of the six-way water valve; The liquid outlet end of the electric drive module is also connected to the heat dissipation module, and the liquid outlet end of the heat dissipation module is connected to the heat dissipation outlet, and the heat dissipation outlet is the liquid inlet end of the eighth water side pipe. The eighth water side pipe is connected to the ninth water side pipe through an expansion kettle, and the liquid outlet end of the ninth water side pipe is connected to the sixth valve port of the six-way water valve.

6. An electric vehicle thermal management integrated module according to claim 5, characterized in that: A water temperature sensor is installed on the sixth water-side pipe; the refrigerant pressure sensor is installed on the liquid inlet end of the second refrigerant pipe; the refrigerant temperature sensor is installed on the fifth refrigerant pipe; and the refrigerant pressure and temperature sensor is installed on the gas-liquid separator.

7. An electric vehicle thermal management integrated module according to claim 6, characterized in that: The second refrigerant one-way valve is also installed on the sixth refrigerant pipeline.

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