Multifunctional integrated thermal management system and electrical equipment

Abstract

The present application provides a multifunctional integrated thermal management system and electrical equipment, relating to the technical field of thermal management systems. The invention comprises a switching mechanism having a first multi-way valve and a second multi-way valve; the condenser of the air conditioning system is connected to the first port and the first connection port respectively through a first water pump, and the cooler is connected to the second port and the fourth port respectively; the heater of the warm air system is connected to the condenser and the warm air core respectively, and the warm air core is connected to the second connection port; the electric drive device of the electric drive cooling system is connected to the second water pump, the radiator and the third port respectively, the second water pump is connected to the cooler and the warm air core respectively, and the radiator is connected to the middle port; the power battery of the battery temperature control system is connected to the third water pump, the fourth connection port and the cooler respectively, and the third water pump is connected to the fifth port and the third connection port respectively. The coupling of the various systems can be achieved to meet the cooling, heating, temperature equalization or heat preservation functions of each system.

Description

Technical Field

[0001] The present application relates to the technical field of thermal management systems, and in particular to a multifunctional integrated thermal management system and electrical equipment. Background Art

[0002] Electric vehicle thermal management systems can be divided into two categories: 1) water circuit, which includes the electric drive cooling system, power battery temperature control system and passenger compartment heating system; 2) refrigerant system, that is, the air-conditioning system. If the air-conditioning system adopts a heat pump solution, the water heating system can be partially or even completely replaced by the heat pump system.

[0003] For water cooling systems, the traditional solution is to use multiple independent water cooling systems with no coupling between the systems. In recent years, in order to achieve energy saving in the thermal management system of the entire vehicle, the various systems are often connected through water cooling systems. Currently, a large number of water valves and complex water pipes are required, resulting in a complex water cooling system and high cost. Summary of the Invention

[0004] The purpose of this application is to provide a multifunctional integrated thermal management system and electrical equipment, which is conducive to the coupling between various systems and meets the cooling, heating, temperature equalization or insulation functions of each system.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a multifunctional integrated thermal management system, comprising: a switching mechanism having a first multi-way valve and a second multi-way valve, wherein the first multi-way valve is provided with a first port, a second port, a third port, a fourth port, a fifth port and an intermediate port, and the second multi-way valve is provided with a first connection port, a second connection port, a third connection port and a fourth connection port; an air conditioning system having a compressor, a condenser, an evaporator, a cooler and a first water pump, one end of the compressor being connected to the condenser, the other end of the compressor being connected to the evaporator and the cooler respectively, the condenser being connected to the first port and the first connection port respectively through the first water pump, the evaporator being connected to the condenser, and the cooler being connected to the second port and the fourth port respectively; a heating system, It has a heater and a heater core, one end of the heater is connected to the condenser, the other end of the heater is connected to the heater core, and the heater core is connected to the second connection port; an electric drive cooling system, comprising an electric drive device, a radiator and a second water pump, one end of the electric drive device is connected to the second water pump, the other end of the electric drive device is respectively connected to the radiator and the third port, the second water pump is respectively connected to the cooler and the heater core, and the radiator is connected to the middle port; a battery temperature control system, comprising a power battery and a third water pump, one end of the power battery is connected to the third water pump, the other end of the power battery is respectively connected to the fourth connection port and the cooler, and the third water pump is respectively connected to the fifth port and the third connection port.

[0007] In the above implementation process, the switching mechanism has a first multi-way valve and a second multi-way valve, and the air-conditioning system, the heating system, the electric drive cooling system and the battery temperature control system are respectively connected to the switching mechanism, so that by switching the first multi-way valve and the second multi-way valve, the flow direction of the coolant is changed, and the coupling of the air-conditioning system, the heating system, the electric drive cooling system and the battery temperature control system can be realized to meet the cooling, heating, temperature equalization or insulation functions of each system.

[0008] In some embodiments, the air conditioning system further has a parallel pipeline, and the parallel pipeline includes a first branch and a second branch. The evaporator is provided on the first branch, and the second branch is connected between the condenser and the cooler.

[0009] In the above-mentioned implementation process, parallel pipes are used to connect the evaporator with the condenser and the cooler with the condenser, which can realize the connectivity of the first branch and / or the connectivity of the second branch under various ambient temperatures and different driving conditions, thereby keeping the power battery and the drive device at a suitable operating temperature, thereby increasing their service life, and at the same time reducing costs while realizing energy flow.

[0010] In some embodiments, the air conditioning system further has a first expansion valve, which is disposed on the first branch and located between the evaporator and the condenser.

[0011] In the above implementation process, the first expansion valve is provided in the first branch, which can be used to control the switching of the first branch on and off, and can actively control the decompression expansion of the coolant.

[0012] In some embodiments, the air conditioning system further has a second expansion valve, which is disposed on the second branch and located between the condenser and the cooler.

[0013] In the above implementation process, the second expansion valve is arranged in the second branch, which can be used to control the switching of the second branch, and at the same time can actively control the decompression expansion of the coolant.

[0014] In some embodiments, the air conditioning system further includes a liquid reservoir connected to the pipeline between the condenser and the parallel pipeline.

[0015] In the above implementation process, the liquid reservoir can be used to store and add coolant, accommodate air overflowing from the air-conditioning system, and adjust the ultimate pressure of the air-conditioning system to achieve control of the air-conditioning system.

[0016] In some embodiments, the electric drive cooling system further has a power supply device, which is connected to the pipeline between the electric drive device and the second water pump. By switching the first multi-way valve and the second multi-way valve, the power supply device can always be at a suitable operating temperature, thereby increasing its service life.

[0017] In some embodiments, the heating system further includes a first one-way valve, which is connected to a pipeline between the heating core and the second water pump to ensure that the coolant flows in only one direction.

[0018] In some embodiments, the battery temperature control system further includes a second one-way valve, which is connected to a pipeline between the power battery and the cooler to ensure that the coolant flows in only one direction.

[0019] In some embodiments, the first multi-way valve comprises a four-position six-way valve, and the second multi-way valve comprises a three-position four-way valve.

[0020] In a second aspect, the present application also provides an electrical device, comprising a multifunctional integrated thermal management system as described in any one of the above items.

[0021] The electrical equipment provided in the second embodiment of the present application includes the multifunctional integrated thermal management system described in the technical solution of the first aspect, and thus has all the technical effects of the above embodiments, which will not be repeated here.

[0022] Other features and advantages of the present application will be described in the following description and, in part, will become apparent from the description or be understood by practicing the embodiments of the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technical users in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the principle of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0025] Figure 2 This is a schematic diagram of the principle of the first mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0026] Figure 3 This is a schematic diagram of the principle of the second mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0027] Figure 4 This is a schematic diagram of the principle of the third mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0028] Figure 5 This is a schematic diagram of the principle of the fourth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0029] Figure 6 This is a schematic diagram of the principle of the fifth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0030] Figure 7 This is a schematic diagram of the principle of the sixth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0031] Figure 8 This is a schematic diagram of the principle of the seventh mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0032] Figure 9This is a schematic diagram of the principle of the eighth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0033] Figure 10 This is a schematic diagram of the ninth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0034] Figure 11 This is a schematic diagram of the principle of the tenth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0035] Figure 12 This is a schematic diagram of the principle of the eleventh mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0036] Figure 13 This is a schematic diagram of the principle of the twelfth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0037] Figure 14 This is a schematic diagram of the principle of the thirteenth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0038] Figure 15 This is a schematic diagram of the principle of the fourteenth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0039] Figure 16 This is a schematic diagram of the principle of the fifteenth mode of a multifunctional integrated thermal management system disclosed in an embodiment of the present application.

[0040] Reference numerals

[0041] 1. Compressor; 2. Condenser; 3. Liquid storage tank; 4. First expansion valve; 5. Evaporator; 6. Second expansion valve; 7. Cooler; 8. Second water pump; 9. Power supply unit; 10. Electric drive unit; 11. Radiator; 12. First multi-way valve; 121. First port; 122. Second port; 123. Third port; 124. Fourth port; 125. Fifth port; 126. Middle port; 13. First water pump; 14. Heater; 15. Warm air core; 16. First one-way valve; 17. Third water pump; 18. Power battery; 19. Second multi-way valve; 191. First connection port; 192. Second connection port; 193. Third connection port; 194. Fourth connection port; 20. Second one-way valve. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application as claimed, but merely represents selected embodiments of the present application. All other embodiments derived by a user of ordinary skill in the art based on the embodiments in the present application without creative effort are also within the scope of protection of the present application.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0045] In the description of the present application, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and should not be understood as indicating or implying relative importance.

[0046] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Users of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] Example

[0048] In order to reduce the energy consumption of passenger cabin heating and battery heating at low temperatures, heat pump systems have become a development trend. Heat pump systems need to switch between cooling mode and heating mode and need to be able to change the flow direction of the coolant. Therefore, the coolant circuit is relatively complex and requires a large number of coolant valves (such as on-off valves, three-way valves, electronic expansion valves, etc.) and complex coolant pipes. This makes the heat pump system complex and costly, thus limiting the popularization and application of heat pump systems.

[0049] like Figure 1 As shown, Figure 1It is a schematic diagram of the principle of a multifunctional integrated thermal management system disclosed in an embodiment of the present application; on the first aspect, the present application provides a multifunctional integrated thermal management system, including: a switching mechanism, an air-conditioning system, a heating system, an electric drive cooling system and a battery temperature control system. The air-conditioning system, the heating system, the electric drive cooling system and the battery temperature control system are coupled through the switching mechanism, and the flow direction of the coolant is changed by switching the switching mechanism, so that the energy of each system can be fully utilized, the thermal energy efficiency of the entire electrical equipment is improved, and in the field of electric vehicles, the cruising range of electric vehicles can be increased.

[0050] Specifically, the switching mechanism includes a first multi-way valve 12 and a second multi-way valve 19, wherein the first multi-way valve 12 is provided with a first port 121, a second port 122, a third port 123, a fourth port 124, a fifth port 125 and an intermediate port 126, and the second multi-way valve 19 is provided with a first connection port 191, a second connection port 192, a third connection port 193 and a fourth connection port 194; the air conditioning system includes a compressor 1, a condenser 2, an evaporator 5, a cooler 7 and a first water pump 13, one end of the compressor 1 is connected to the condenser 2, and the other end of the compressor 1 is connected to the evaporator 5 and the cooler 7 respectively, the condenser 2 is connected to the first port 121 and the first connection port 191 respectively through the first water pump 13, the evaporator 5 is connected to the condenser 2, and the cooler 7 is connected to the second port 122 and the fourth port 124 respectively; the heating system includes a heater 14 and A heater core 15, one end of the heater 14 is connected to the condenser 2, the other end of the heater 14 is connected to the heater core 15, and the heater core 15 is connected to the second connection port 192; an electric drive cooling system, comprising an electric drive device 10, a radiator 11 and a second water pump 8, one end of the electric drive device 10 is connected to the second water pump 8, the other end of the electric drive device 10 is respectively connected to the radiator 11 and the third port 123, the second water pump 8 is respectively connected to the cooler 7 and the heater core 15, and the radiator 11 is connected to the middle port 126; a battery temperature control system, comprising a power battery 18 and a third water pump 17, one end of the power battery 18 is connected to the third water pump 17, the other end of the power battery 18 is respectively connected to the fourth connection port 194 and the cooler 7, and the third water pump 17 is respectively connected to the fifth port 125 and the third connection port 193.

[0051] Exemplarily, the first multi-way valve 12 includes a four-position six-way valve, and the second multi-way valve 19 includes a three-position four-way valve. A first valve core is provided inside the first multi-way valve 12, and the switching of the first multi-way valve 12 can be achieved by controlling the rotation of the first valve core. A second valve core is provided inside the second multi-way valve 19, and the switching of the second multi-way valve 19 can be achieved by rotating the second valve core.

[0052] Among them, the compressor 1 is used to compress the refrigerant and promote the flow of refrigerant in the air-conditioning system, and is the core structure of the air-conditioning system; the condenser 2 is a type of heat exchanger that can convert gas or vapor into liquid; the evaporator 5 is the physical process of converting liquid into gas; the cooler 7 usually uses water or air as a coolant to remove heat; the heater 14 includes but is not limited to a PTC heating device, which is composed of a PTC (Positive Temperature Coefficient) ceramic heating element and an aluminum tube.

[0053] In the above-mentioned implementation process, the switching mechanism has a first multi-way valve 12 and a second multi-way valve 19, and the air-conditioning system, the heating system, the electric drive cooling system and the battery temperature control system are respectively connected to the switching mechanism, so that by switching the first multi-way valve 12 and the second multi-way valve 19, the flow direction of the coolant is changed, and the coupling of the air-conditioning system, the heating system, the electric drive cooling system and the battery temperature control system can be realized to meet the cooling, heating, temperature equalization or insulation functions of each system.

[0054] In some embodiments, the air-conditioning system further has a parallel pipeline, which includes a first branch and a second branch. The evaporator 5 is provided on the first branch, and the second branch is connected between the condenser 2 and the cooler 7.

[0055] In the above-mentioned implementation process, parallel pipes are used to connect the evaporator 5 with the condenser 2 and to connect the cooler 7 with the condenser 2, which can realize the connectivity of the first branch and / or the connectivity of the second branch under various ambient temperatures and different driving conditions, thereby making the power battery 18 and the drive device at a suitable operating temperature, thereby improving their service life, and at the same time reducing costs while realizing energy flow.

[0056] In some embodiments, the air-conditioning system further has a first expansion valve 4 , which includes but is not limited to a first electronic expansion valve. The first expansion valve 4 is arranged on the first branch, and the first expansion valve 4 is located between the evaporator 5 and the condenser 2 .

[0057] In the above implementation process, the first expansion valve 4 is provided in the first branch, which can be used to control the switching of the first branch on and off, and can actively control the decompression expansion of the coolant.

[0058] In some embodiments, the air-conditioning system further has a second expansion valve 6 , which includes but is not limited to a second electronic expansion valve. The second expansion valve 6 is arranged on the second branch, and the second expansion valve 6 is located between the condenser 2 and the cooler 7 .

[0059] In the above implementation process, the second expansion valve 6 is provided in the second branch, which can be used to control the switching of the second branch, and can actively control the decompression expansion of the coolant.

[0060] In some embodiments, the air conditioning system further includes a liquid reservoir 3 , which is connected to the pipeline between the condenser 2 and the parallel pipeline.

[0061] In the above implementation process, the liquid reservoir 3 can be used to store and add coolant, accommodate air overflowing from the air-conditioning system, and adjust the ultimate pressure of the air-conditioning system to achieve control of the air-conditioning system.

[0062] In some embodiments, the electric drive cooling system further has a power supply device 9, which is connected to the pipeline between the electric drive device 10 and the second water pump 8. The power supply device 9 can always be kept at a suitable operating temperature by switching the first multi-way valve 12 and the second multi-way valve 19, thereby improving its service life.

[0063] In some embodiments, the heating system further includes a first one-way valve 16 , which is connected to a pipeline between the heating core 15 and the second water pump 8 to ensure that the coolant flows in only one direction.

[0064] In some embodiments, the battery temperature control system further includes a second one-way valve 20 , which is connected to a pipeline between the power battery 18 and the cooler 7 to ensure that the coolant flows in only one direction.

[0065] In a second aspect, the present application also provides an electrical device, comprising a multifunctional integrated thermal management system as described in any of the above items. For example, the electrical device may be a common electric vehicle / electric vehicle (EV), a pure electric vehicle (PV / BEV), a hybrid electric vehicle (HEV), an extended-range electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle (NEV), an electric bus, an electric motorcycle, etc., wherein the multifunctional integrated thermal management system may be applied to fields such as home appliances, buildings, aircraft, and ships in addition to vehicles.

[0066] like Figure 2As shown, the first mode is a mode in which the air-conditioning system performs cooling, and the power supply device 9, the electric drive device and the power battery 18 are cooled; the specific process is: under high temperature environmental conditions, when the power supply device 9 or the electric drive device 10 has a cooling demand, the second water pump 8 (and the first water pump 13) works, and the coolant flows through the power supply device 9, the electric drive device 10, the radiator 11 (heat exchange), the middle port 126 and the first port 121 of the four-position six-way valve, the first water pump 13, the condenser 2 (heat exchange), the heater 14 (not working), the warm air core 15 (no heat exchange) and the first one-way valve 16, and then returns to the second water pump 8. The heat of the power supply device 9, the electric drive device 10 and the condenser 2 is carried by the coolant to the radiator 11 for heat exchange with the air outside the vehicle, thereby achieving the purpose of cooling. When power battery 18 requires cooling, third water pump 17 operates, and coolant flows sequentially through power battery 18, second one-way valve 20, cooler 7 (heat exchange), and fourth port 124 of the four-position, six-way valve before returning to third water pump 17. Heat from power battery 18 is removed by cooler 7, achieving cooling. When the vehicle's passenger compartment requires cooling and the power battery 18 requires cooling, compressor 1 starts, and refrigerant flows through condenser 2 (heat exchange) and reservoir 3. The refrigerant then splits into two paths: the first path passes through first expansion valve 4 (operation), evaporator 5 (heat exchange), and returns to compressor 1, cooling the passenger compartment through evaporator 5. The second path passes through second expansion valve 6 (operation), cooler 7 (heat exchange), and returns to compressor 1, cooling power battery 18 through cooler 7, thus forming another heat exchange cycle.

[0067] like Figure 3As shown, the second mode is a mode in which the air-conditioning system cools the passenger compartment, the power supply unit 9 and the electric drive unit 10 are cooled, and the power battery 18 is kept at a uniform temperature. The specific process is as follows: under high temperature environmental conditions, when the power supply unit 9 or the electric drive unit 10 has a cooling demand, the second water pump 8 (and the first water pump 13) works, and the coolant flows through the power supply unit 9, the electric drive unit 10, the radiator 11 (heat exchange), the middle port 126 and the first port 121 of the four-position six-way valve, the first water pump 13, the condenser 2 (heat exchange), the heater 14 (not working), the heater core 15 (no heat exchange) and the first one-way valve 16, and then returns to the second water pump 8. The heat of the power supply unit 9, the electric drive unit 10 and the condenser 2 is carried by the coolant to the radiator 11 for heat exchange with the air outside the vehicle, thereby achieving the purpose of cooling. When the power battery 18 needs to be temperature-balanced, the third water pump 17 operates, and the coolant flows sequentially through the power battery 18, the second one-way valve 20, the cooler 7 (without heat exchange), the fourth port 124 of the four-position six-way valve, and then returns to the third water pump 17, achieving a uniform internal temperature for the power battery 18. When the vehicle's passenger compartment needs to be cooled, the compressor 1 starts, and the refrigerant flows through the condenser 2 (for heat exchange), the liquid receiver 3, the first expansion valve 4 (operating), the evaporator 5 (for heat exchange), and then returns to the compressor 1, where it cools the passenger compartment.

[0068] like Figure 4 As shown, the third mode is a mode in which the air-conditioning system cools the power battery 18, and cools the power supply device 9, the electric drive device 10 and the power battery 18; the specific process is: under high temperature environmental conditions, when the power supply device 9 or the electric drive device 10 has a cooling demand, the second water pump 8 (and the first water pump 13) works, and the coolant flows through the power supply device 9, the electric drive device 10, the radiator 11 (heat exchange), the middle port 126 and the first port 121 of the four-position six-way valve, the first water pump 13, the condenser 2 (heat exchange), the heater 14 (not working), the heater core 15 (no heat exchange) and the first one-way valve 16, and then returns to the second water pump 8. The heat of the power supply device 9, the electric drive device 10 and the condenser 2 is carried by the coolant to the radiator 11 for heat exchange with the air outside the vehicle, thereby achieving the purpose of cooling. When the power battery 18 requires cooling, the third water pump 17 operates, and the coolant flows sequentially through the power battery 18, the second one-way valve 20, the cooler 7 (heat exchange), and the fourth port 124 of the four-position six-way valve before returning to the third water pump 17. Heat from the power battery 18 is removed by the cooler 7, achieving cooling. When the vehicle's passenger compartment does not require cooling but the power battery 18 requires cooling, the compressor 1 starts, and the refrigerant flows through the condenser 2 (heat exchange), the liquid receiver 3, the second expansion valve 6 (operation), and the cooler 7 (heat exchange), before returning to the compressor 1 and being cooled by the cooler 7.

[0069] like Figure 5As shown, the fourth mode is a mode in which the air-conditioning system cools the passenger compartment, and the power supply unit 9, the electric drive unit 10, and the power battery 18 share the radiator 11; the specific process is: under normal temperature conditions, the power supply unit 9, the electric drive unit 10, the power battery 18 and the condenser 2 can share the radiator 11 for cooling. At this time, the second water pump 8 (and the first water pump 13, the third water pump 17) are working, and the coolant flows in sequence through the power supply unit 9, the electric drive unit 10, the radiator 11 (heat exchange), the middle port 126 and the first port 121 of the four-position six-way valve, the first water pump 13, the condenser 2 (heat exchange), the heater 14 (not working), the heater core 15 (no heat exchange), the second connection port 192 and the third connection port 193 of the three-position four-way valve, the third water pump 17, the power battery 18 and the second one-way valve 20, and then returns to the second water pump 88 to form a heat dissipation cycle. When the vehicle's passenger compartment needs to be cooled, compressor 1 starts, and the refrigerant flows through condenser 2 (heat exchange), liquid receiver 3, first expansion valve 4 (working) and evaporator 5 (heat exchange), and then returns to compressor 1 to cool the passenger compartment through evaporator 5.

[0070] like Figure 6 As shown, the fifth mode is a mode in which the air-conditioning system cools the passenger compartment, the power supply unit 9 and the electric drive unit 10 are cooled, and the power battery 18 is short-circuited for temperature equalization. The specific process is: under normal temperature conditions, when the power supply unit 9 or the electric drive unit 10 has a cooling demand, the second water pump 8 (and the third water pump 17) works, and the coolant flows through the power supply unit 9, the electric drive unit 10, the radiator 11 (heat exchange), the middle port 126 and the first port 121 of the four-position six-way valve, the first water pump 13, the condenser 2 (heat exchange), the heater 14 (not working), the heater core 15 (no heat exchange), and the first one-way valve 16 returns to the second water pump 8. The heat of the power supply unit 9, the electric drive unit 10 and the condenser 2 is carried by the coolant to the radiator 11 for heat exchange with the air outside the vehicle, thereby achieving the purpose of cooling. When the power battery 18 needs to be kept at a constant temperature, the third water pump 17 operates, and the coolant flows sequentially through the power battery 18, the fourth connection port 194 of the three-position four-way valve, and the third connection port 193, and then returns to the third water pump 17, achieving a constant internal temperature of the power battery 18. When the vehicle's passenger compartment needs to be cooled, the compressor 1 starts, and the refrigerant flows through the condenser 2 (for heat exchange), the liquid receiver 3, the first expansion valve 4 (for operation), the evaporator 5 (for heat exchange), and then returns to the compressor 1, where it cools the passenger compartment.

[0071] like Figure 7As shown, the sixth mode is a mode in which the air conditioning system is inoperative, and the power supply unit 9, electric drive unit 10, and power battery 18 share the radiator 11 for cooling. The specific process is as follows: Under normal temperature conditions, the power supply unit 9, electric drive unit 10, and power battery 18 can share the radiator 11 for cooling. In this mode, the second water pump 8 (and the third water pump 17) operate, and the coolant flows sequentially through the power supply unit 9, electric drive unit 10, radiator 11 (for heat exchange), the middle port 126 and the fifth port 125 of the four-position six-way valve, the third water pump 17, the power battery 18, and the second one-way valve 20, and then returns to the second water pump 8, completing the heat dissipation cycle. When there is no need to cool the vehicle passenger compartment, the air conditioning does not operate.

[0072] like Figure 8 As shown, the seventh mode is a mode in which the air conditioning system is not working, the power supply unit 9 and the electric drive unit 10 are cooled, and the constant-power battery section is circulated and evenly heated. The specific process is as follows: Under normal temperature conditions, when the power supply unit 9 or the electric drive unit 10 needs to be cooled, the second water pump 8 is activated, and the coolant flows through the power supply unit 9, the electric drive unit 10, the radiator 11 (heat exchange), the middle port 126 and the first port 121 of the four-position six-way valve, the first connection port 191 and the second connection port 192 of the three-position four-way valve, the first one-way valve 16, and then returns to the second water pump 8. The heat of the power supply unit 9 and the electric drive unit 10 is carried by the coolant to the radiator 11 for heat exchange with the air outside the vehicle, achieving the purpose of cooling. When the power battery 18 needs to be evenly heated, the third water pump 17 is activated, and the coolant flows through the power battery 18, the fourth connection port 194 and the third connection port 193 of the three-position four-way valve, and then returns to the third water pump 17, achieving the purpose of equalizing the internal temperature of the power battery 18. When there is no need to cool the vehicle's passenger compartment, the air conditioner does not work.

[0073] like Figure 9As shown, the eighth mode is a mode in which the air conditioning system utilizes waste heat to heat the passenger compartment while cooling the power supply unit 9, electric drive unit 10, and power battery 18. The specific process is as follows: Under relatively low ambient temperature conditions, when the vehicle's passenger compartment requires heating and there is excess waste heat, compressor 1 starts, and the refrigerant flows through condenser 2 (heat exchange), liquid reservoir 3, second expansion valve 6 (operating), cooler 7 (heat exchange), and then returns to compressor 1, completing the waste heat heating cycle. At this time, first water pump 13 operates, and the coolant flows sequentially through condenser 2 (heat exchange), heater 14 (off-operating), heater core 15 (heat exchange), the second port and the first port of the three-position four-way valve, and then returns to first water pump 13, providing heat to the vehicle's passenger compartment through heater core 15. At the same time, the second water pump 8 (and the third water pump 17) are working, and the coolant flows through the power supply device 9 and the electric drive device 10 in sequence. At this time, the coolant is divided into two paths. The first path passes through the radiator 11 (heat exchange), the middle port 126 and the fifth port 125 of the four-position six-way valve, the third water pump 17, the power battery 18, and the second one-way valve 20 to return to the second water pump 8 to form a heat dissipation cycle. The second path passes through the third port 123 and the second port 122 of the four-position six-way valve, the cooler 7 (heat exchange) and returns to the second water pump 8, forming another heat exchange cycle to provide waste heat for the air-conditioning system.

[0074] like Figure 10 As shown, the ninth mode is a mode in which the air conditioning system utilizes waste heat and ambient heat to heat the passenger compartment, cooling the power supply unit 9 and electric drive unit 10, and short-circuiting the power battery 18 to equalize the temperature. The specific process is as follows: Under relatively low ambient conditions, when the vehicle's passenger compartment requires heating and there is insufficient waste heat, compressor 1 starts, and the refrigerant flows through condenser 2 (heat exchange), reservoir 3, second expansion valve 6 (operating), cooler 7 (heat exchange), and returns to compressor 1, forming a heating cycle. At this time, first water pump 13 operates, and the coolant flows sequentially through condenser 2 (heat exchange), heater 14 (non-operating), heater core 15 (heat exchange), the second connection port 192 and the first connection port 191 of the three-position four-way valve, and then returns to the first water pump 13, forming a heat exchange cycle to provide heat to the vehicle's passenger compartment. Simultaneously, the second water pump 8 operates, and the coolant flows sequentially through the power supply unit 9, the electric drive unit 10, the radiator 11 (for heat exchange), the middle port 126 and the second port 122 of the four-position, six-way valve, the cooler 7 (for heat exchange), and then returns to the second water pump 8, forming a heat exchange cycle to provide a low-temperature heat source for the air conditioning system. When the power battery 18 needs to be evenly heated, the third water pump 17 operates, and the coolant flows sequentially through the power battery 18, the fourth connection port 194 of the three-position, four-way valve, and the third connection port 193, and then returns to the third water pump 17, achieving the goal of equalizing the internal temperature of the power battery 18.

[0075] like Figure 11As shown, the tenth mode is a mode in which the air conditioning system uses waste heat to heat the passenger compartment, cools the power supply unit 9 and electric drive unit 10, and short-circuits the power battery 18 to equalize temperature. The specific process is as follows: Under relatively low temperature conditions, when the vehicle's passenger compartment needs heating and there is sufficient waste heat, compressor 1 starts, and the refrigerant flows through condenser 2 (heat exchange), liquid reservoir 3, second expansion valve 6 (operating), cooler 7 (heat exchange), and returns to compressor 1, forming a waste heat heating cycle. At this time, first water pump 13 is operating, and the coolant flows in sequence through condenser 2 (heat exchange), heater 14 (non-operating), heater core 15 (heat exchange), second connection port 192 and first connection port 191 of the three-position four-way valve, and then returns to first water pump 13, forming a heat exchange cycle to provide heat to the vehicle's passenger compartment. Simultaneously, the second water pump 8 operates, and the coolant flows sequentially through the power supply unit 9, the electric drive unit 10, the third and fourth ports 123 and 124 of the four-position, six-way valve, the cooler 7 (for heat exchange), and then returns to the first water pump 13, forming a heat exchange cycle to provide waste heat for the air conditioning system. When the power battery 18 needs to be kept at a constant temperature, the third water pump 17 operates, and the coolant flows sequentially through the power battery 18, the fourth and third connection ports 194 and 193 of the three-position, four-way valve, and then returns to the third water pump 17, achieving a constant internal temperature for the power battery 18.

[0076] like Figure 12 As shown, the eleventh mode is a mode in which the air conditioning system is inoperative, the passenger compartment is heated via heater 14, the power supply unit 9 and electric drive unit 10 are kept warm, and the power battery 18 is subjected to a short-cycle equalization process. The specific process is as follows: Under low-temperature conditions, when the vehicle's passenger compartment requires heating but has little excess heat, and the air conditioning system's heating efficiency is low, the first water pump 13 operates, and the coolant flows sequentially through the condenser 2 (no heat exchange), the heater 14 (operating), the heater core 15 (heat exchange), the second connection port 192 and the first connection port 191 of the three-position four-way valve, and then returns to the first water pump 13, forming a heat exchange cycle to provide heat to the vehicle's passenger compartment. At this time, the second water pump 8 operates, and the coolant flows sequentially through the power supply unit 9, the electric drive unit 10, the third port 123 and the fourth port 124 of the four-position six-way valve, the cooler 7 (no heat exchange), and then returns to the first water pump 13, forming a heat preservation and heat storage cycle. When the power battery 18 needs to have a uniform temperature, the third water pump 17 works, and the coolant flows through the power battery 18, the fourth connection port 194 of the three-position four-way valve, and the third connection port 193 in sequence, and then returns to the third water pump 17, so that the power battery 18 achieves the purpose of uniform internal temperature.

[0077] like Figure 13As shown, the twelfth mode is a mode in which the air-conditioning system does not work, the passenger compartment and the power battery 18 are heated by the heater 14, and the power supply device 9 and the electric drive device 10 are kept warm. The specific process is: under low temperature conditions, when the power battery 18 needs to be heated and the passenger compartment of the vehicle has a heating demand and there is little waste heat, and the heating efficiency of the air-conditioning system is low, the first water pump 13 (and the third water pump 17) works, and the coolant flows in sequence through the condenser 2 (no heat exchange), the heater 14 (working), the heater core 15 (heat exchange), the second connection port 192 and the third connection port 193 of the three-position four-way valve, the third water pump 17, the power battery 18, the fourth connection port 194 of the three-position four-way valve and the first connection port 191, and then returns to the first water pump 13, forming a heat exchange cycle to provide heat for the power battery 18 and the passenger compartment of the vehicle. At this time, the second water pump 8 is working, and the coolant flows through the power supply device 9, the electric drive device 10, the third port 123 and the fourth port 124 of the four-position six-way valve, the cooler 7 (without heat exchange), and then returns to the second water pump 8, forming a thermal insulation and heat storage cycle.

[0078] like Figure 14 As shown, the thirteenth mode is a mode in which the air conditioning system utilizes waste heat to heat the passenger compartment and power battery 18. The specific process is as follows: Under low-temperature conditions, when the power battery 18 needs to be heated and the vehicle's passenger compartment requires heating and there is sufficient waste heat, compressor 1 starts, and refrigerant flows through condenser 2 (heat exchange), reservoir 3, second expansion valve 6 (operation), cooler 7 (heat exchange), and then returns to compressor 1, completing a waste heat heating cycle. At this time, first water pump 13 (and third water pump 17) operates, and coolant flows sequentially through condenser 2 (heat exchange), heater 14 (operation when needed), heater core 15 (heat exchange), the second and third connections 192 and 193 of the three-position four-way valve, the third water pump 17, the power battery 18, the fourth connection 194 of the three-position four-way valve, and the first connection, and then returns to the first water pump 1313, completing a heat exchange cycle that provides heat to the power battery 18 and the vehicle's passenger compartment. At the same time, the second water pump 8 is working, and the coolant flows through the power supply device 9, the electric drive device 10, the third port 123 and the fourth port 124 of the four-position six-way valve, the cooler 7 (heat exchange) and returns to the second water pump 8, forming a heat exchange cycle to provide waste heat for the air-conditioning system.

[0079] like Figure 15As shown, the fourteenth mode is a mode in which the air conditioning system utilizes waste heat and ambient heat to heat the passenger compartment and power battery 18. The specific process is as follows: Under low-temperature conditions, when the power battery 18 needs to be heated and the vehicle's passenger compartment requires heating, and there is insufficient waste heat, compressor 1 starts, and the refrigerant flows through condenser 2 (for heat exchange), reservoir 3, second expansion valve 6 (operating), cooler 7 (for heat exchange), and then returns to compressor 1, completing a heating cycle. At this time, first water pump 13 (and third water pump 17) operates, and the coolant flows sequentially through condenser 2 (for heat exchange), heater 14 (operating when needed), heater core 15 (for heat exchange), the second and third connections 192 and 193 of the three-position four-way valve, the third water pump 17, the power battery 18, the fourth connection 194 of the three-position four-way valve, and the first connection, and then returns to the first water pump 13, completing a heat exchange cycle to provide heat to the power battery 18 and the vehicle's passenger compartment. At the same time, the second water pump 8 is working, and the coolant flows through the power supply device 9, the electric drive device 10, the radiator 11 (heat exchange), the middle port 126 and the second port 122 of the four-position six-way valve, the cooler 7 (heat exchange), and then returns to the second water pump 8, forming a heat exchange cycle to provide a low-temperature heat source for the air-conditioning system.

[0080] like Figure 16 As shown, the fifteenth mode is a mode in which the air conditioning system and heater 14 heat the passenger compartment and power battery 18, while the power supply unit 9 and electric drive unit 10 maintain heat. The specific process is as follows: Under low-temperature conditions, when the power battery 18 and the vehicle's passenger compartment need to be quickly heated and there is little excess heat, the compressor 1 starts, and the refrigerant flows through the condenser 2 (heat exchange), the liquid reservoir 3, the first expansion valve 4 (operating), and the evaporator 5 (heat exchange), and then returns to the compressor 1, completing the air conditioning compression heating cycle. At this time, the first water pump 13 (and the third water pump 17) operate, and the coolant flows sequentially through the condenser 2 (heat exchange), the heater 14 (operating), the heater core 15 (heat exchange), the second and third connections 192 and 193 of the three-position four-way valve, the third water pump 17, the power battery 18, the fourth connection 194 of the three-position four-way valve, and the first connection, and then returns to the first water pump 13, completing a heat exchange cycle to provide heat to the power battery 18 and the vehicle's passenger compartment. At the same time, the second water pump 8 is working, and the coolant flows through the power supply device 9, the electric drive device 10, the third port 123 and the fourth port 124 of the four-position six-way valve and the cooler 7 (without heat exchange) in sequence, and then returns to the second water pump 8, forming a thermal insulation and heat storage cycle.

[0081] It can be understood that the minimalist large air-conditioning system realizes the heat pump function, and cooperates with the specially designed coolant circuit to provide the required cooling and heat for the passenger compartment to meet the comfort needs; when appropriate, the waste heat of the power battery 18, the power supply device 9 and the electric drive device 10 can also be used as a low-temperature heat source when the air-conditioning system is heating, thereby improving the energy efficiency utilization rate of the vehicle, increasing the vehicle's cruising range, and realizing the high energy efficiency and high integration of the multifunctional integrated thermal management system, with a reasonable structure and low manufacturing cost.

[0082] The electrical equipment provided in the second embodiment of the present application includes the multifunctional integrated thermal management system described in the technical solution of the first aspect, and thus has all the technical effects of the above embodiments, which will not be repeated here.

[0083] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for users skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A multifunctional integrated thermal management system, characterized in that: include: The switching mechanism includes a first multi-way valve and a second multi-way valve, wherein the first multi-way valve is provided with a first port, a second port, a third port, a fourth port, a fifth port, and an intermediate port, and the second multi-way valve is provided with a first connection port, a second connection port, a third connection port, and a fourth connection port; An air conditioning system comprising a compressor, a condenser, an evaporator, a cooler, and a first water pump, wherein one end of the compressor is connected to the condenser, and the other end of the compressor is connected to the evaporator and the cooler, respectively. The condenser is connected to the first port and the first connection port, respectively, via the first water pump. The evaporator is connected to the condenser, and the cooler is connected to the second port and the fourth port, respectively. A heating system comprising a heater and a heating core, wherein one end of the heater is connected to the condenser, the other end of the heater is connected to the heating core, and the heating core is connected to the second connection port; an electrically driven cooling system comprising an electric drive device, a radiator, and a second water pump, wherein one end of the electric drive device is connected to the second water pump, the other end of the electric drive device is respectively connected to the radiator and the third port, the second water pump is respectively connected to the cooler and the heater core, and the radiator is connected to the middle port; A battery temperature control system includes a power battery and a third water pump, one end of the power battery is connected to the third water pump, the other end of the power battery is respectively connected to the fourth connection port and the cooler, and the third water pump is respectively connected to the fifth port and the third connection port.

2. The multifunctional integrated thermal management system according to claim 1, characterized in that: The air conditioning system further has a parallel pipeline, which includes a first branch and a second branch. The evaporator is provided on the first branch, and the second branch is connected between the condenser and the cooler.

3. The multifunctional integrated thermal management system according to claim 2, characterized in that: The air conditioning system further includes a first expansion valve, which is disposed on the first branch and located between the evaporator and the condenser.

4. The multifunctional integrated thermal management system according to claim 2 or 3, characterized in that: The air conditioning system further includes a second expansion valve, which is arranged on the second branch and located between the condenser and the cooler.

5. The multifunctional integrated thermal management system according to claim 2, characterized in that: The air conditioning system further includes a liquid reservoir connected to the pipeline between the condenser and the parallel pipeline.

6. The multifunctional integrated thermal management system according to claim 1, characterized in that: The electric drive cooling system further includes a power supply device, which is connected to a pipeline between the electric drive device and the second water pump.

7. The multifunctional integrated thermal management system according to claim 1, characterized in that: The heating system further comprises a first one-way valve, which is connected to a pipeline between the heating core and the second water pump.

8. The multifunctional integrated thermal management system according to claim 1, characterized in that: The battery temperature control system further includes a second one-way valve connected to a pipeline between the power battery and the cooler.

9. The multifunctional integrated thermal management system according to claim 1, characterized in that: The first multi-way valve includes a four-position six-way valve, and the second multi-way valve includes a three-position four-way valve.

10. An electrical device, characterized in that: It comprises the multifunctional integrated thermal management system as described in any one of claims 1 to 9.

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