Multi-way valve thermal management system and vehicle

Abstract

The present invention discloses a multi-way valve thermal management system and a vehicle, including a low-temperature radiator, a condenser, a water-heating PTC, a heater core, and a power battery pack, all connected to a flow channel plate and a multi-way valve to form a circuit through which coolant flows. The multi-way valve includes at least one movable valve core, which switches the connection or closure between multiple pipelines. The multi-way valve includes at least one movable valve core that switches the multiple pipelines to the following states: the heat exchanger, the motor electronically controlled cooling device connected end to end, and the low-temperature radiator are connected to form a first circuit via the multi-way valve; the condenser, the water-heating PTC, the heater core, and the power battery pack are connected to form a second circuit via the multi-way valve; wherein the inlet and outlet of the sequentially connected condenser, the water-heating PTC, and the heater core are provided with two short-circuit pipelines at one end connected to the multi-way valve; and at least one of the short-circuit pipelines can be closed by a valve. The application of the present invention improves the integration of the coolant circuit and reduces the number of components in the thermal management system.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management of new energy vehicles, and in particular to a multi-way valve thermal management system and a vehicle. Background Art

[0002] As fuel prices continue to rise, the penetration rate of new energy vehicles is also increasing. As enthusiasm for purchasing new energy vehicles grows, people are also paying more and more attention to the battery life and safety of new energy vehicles.

[0003] The thermal management function of traditional fuel vehicles is single, the system involves fewer components, and the system functions are relatively simple.

[0004] New energy vehicles are powered by electricity, and maintaining passenger compartment cooling, maintaining battery pack temperature balance, and cooling the motor and electronic controls all require energy. Compared to traditional fuel-powered vehicles, energy management involves more complex systems and involves more complex energy management. Therefore, thermal management is increasingly crucial for improving energy efficiency, ensuring vehicle range, and ensuring battery pack safety.

[0005] Among them, the thermal management system includes a refrigerant circuit and a coolant circuit, among which the coolant circuit plays an important role in the new energy thermal management system.

[0006] Existing thermal management systems for new energy vehicles are still primarily decentralized. Coolant heat is primarily exchanged between functional components such as the passenger compartment, battery, and motor, and these components operate in separate circuits. To achieve connectivity between these circuits, multiple three-way and four-way valves are used within the circuits. These valves are combined and switched to achieve different system functions.

[0007] Because thermal management system components are dispersed throughout the vehicle, connected by piping and then fixed to the vehicle, this dispersed layout results in low system integration. For vehicle manufacturers, this creates a wide variety of materials, significant space requirements, and complex system control, leading to inefficient energy utilization. This ultimately results in long thermal management system development cycles, high costs, complex vehicle assembly, and inconvenient maintenance.

[0008] In addition, the batteries of new energy vehicles are easily damaged in low temperature weather. Therefore, in the existing technology, it is usually necessary to connect the batteries to an external heating pack to heat the batteries. This heating method usually cannot meet the heat requirements of the batteries.

[0009] Therefore, in the vehicle thermal management system, how to improve the integration of the coolant circuit, reduce the number of components, and coordinate the management of the decentralized thermal management system to reduce energy waste and meet the heat requirements of the battery has become a technical problem that technicians in this field urgently need to solve. Summary of the Invention

[0010] In view of the problems in the prior art of low integration of the coolant circuit, complex structure and inability to meet the heat demand of the battery, the present application provides a multi-way valve thermal management system and a vehicle.

[0011] To achieve the above objectives, the present invention discloses a multi-way valve thermal management system, which includes a motor electronically controlled cooling device, a condenser, a water heating PTC, a heater core and a power battery pack.

[0012] The motor electronically controlled cooling device, the condenser, the water heating PTC, the heater core and the power battery pack are all connected to the multi-way valve through the flow channel plate to form a loop for circulating the coolant;

[0013] The multi-way valve includes at least one movable valve core, through which the plurality of pipelines can be switched to be connected or closed;

[0014] The multi-way valve at least includes the movable valve core that switches the plurality of pipelines to the following states:

[0015] The motor electronically controlled cooling device is connected in series with the multi-way valve to form a motor electronically controlled branch circuit;

[0016] The power battery pack and the multi-way valve are connected in series to form a battery branch circuit;

[0017] The condenser, the water heating PTC, the heater core and the multi-way valve are connected in series to form a passenger compartment heating branch;

[0018] The passenger compartment heating branch, the motor electronic control branch, and the battery branch are interconnected through the multi-way valve to form a loop;

[0019] Wherein, the passenger compartment heating branch includes two parallel short-circuit pipelines on the side connected to the multi-way valve;

[0020] At least one of the two short-circuit pipelines can be closed by a first proportional three-way valve.

[0021] The application of the present invention improves the integration of the coolant circuit, reduces the number of components of the thermal management system, reduces the occupied space of the thermal management system, and comprehensively manages the decentralized thermal management systems to reduce energy waste.

[0022] Furthermore, the present invention can recover the waste heat of the motor electronic control branch to the battery pack by first connecting the motor electronic control cooling device and the low-temperature radiator to the battery pack, and then connecting it to the passenger compartment heating branch. When the motor electronic control waste heat cannot meet the heat demand of the battery pack, the first proportional three-way valve is adjusted to bring part or all of the heat in the passenger compartment heating branch into the battery branch.

[0023] Preferably, the multi-way valve includes a C1 interface, a C2 interface, a C3 interface, a C4 interface, a C7 interface and a C8 interface;

[0024] The C1 interface and the C2 interface are connected to the outlet and inlet of the passenger compartment heating branch respectively, the C3 interface and the C4 interface are connected to the inlet and outlet of the battery branch respectively, and the C7 interface and the C8 interface correspond to the inlet and outlet of the motor electronic control branch respectively;

[0025] The C1 interface and the C7 interface are interconnected, the C2 interface and the C4 interface are interconnected, and the C3 interface and the C8 interface are interconnected.

[0026] Preferably, the multi-way valve thermal management system also includes a heat exchanger, which is connected in series with the multi-way valve to form a heat exchanger branch. The multi-way valve also includes a C5 interface and a C6 interface. The C5 interface and the C6 interface are respectively connected to the inlet and outlet of the heat exchanger branch, and the C5 interface and the C6 interface are not connected to each other.

[0027] Preferably, the connection between the C1 interface and the condenser is achieved by providing a plurality of tees at the location where the condenser is connected to the two short-circuit pipelines;

[0028] The C2 interface and the heater core are connected by arranging a plurality of tees at positions where the heater core is connected to the two short-circuit pipelines.

[0029] Preferably, a second proportional three-way valve is provided in the motor electronic control branch, and the low-temperature radiator is connected in parallel to the outlet side of the motor electronic control cooling device through the second proportional three-way valve, so that the motor electronic control branch has a bypass effect, and the corresponding coolant flow is distributed through the second proportional three-way valve.

[0030] Preferably, a condensing fan is provided at the low-temperature radiator;

[0031] The condensing fan is used to assist in heat dissipation.

[0032] Preferably, the motor electronic control branch, the battery branch and the passenger compartment heating branch are all provided with a coolant circulation water pump.

[0033] Preferably, the condenser is further provided with a circuit for flowing a refrigerant, the circuit for flowing the refrigerant is provided with an evaporator, the heater core and the evaporator are installed together, and / or a blower is provided at the heater core, and / or the circuit for flowing the refrigerant is further provided with an outdoor heat exchanger;

[0034] When the passenger compartment heating branch is in the passenger compartment heating or dehumidification mode, the heat comes from the condenser. If the heat is insufficient, the water heating PTC will work to heat the coolant in the passenger compartment heating branch to meet the heating or dehumidification requirements.

[0035] The refrigerant transfers the heat it carries to the coolant in the passenger compartment heating circuit through the condenser.

[0036] The blower, the heater core and the evaporator are arranged in the passenger compartment; the blower is used to accelerate the air passing through the heater core and the evaporator to achieve heat exchange.

[0037] Preferably, the flow channel plate includes a plurality of flow channels for conveying coolant, and the plurality of flow channels are arranged parallel to each other and one end of each is connected to the multi-way valve, and the other end of each is connected to the corresponding heat exchanger, the motor electronic control cooling device, the low-temperature radiator, the condenser, the water heating PTC, the heater core or the power battery pack.

[0038] The present invention also provides a vehicle that adopts any one of the multi-way valve thermal management systems described above.

[0039] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A structural diagram showing an embodiment of the present invention is shown.

[0041] Figure 2 A schematic diagram showing the state of proportional adjustment of the first proportional three-way valve in one embodiment of the present invention is shown.

[0042] Figure 3 Schematic diagram showing a state in which V1 and V3 of the first proportional three-way valve are fully opened and one of the two short-circuit pipelines is closed in one embodiment of the present invention.

[0043] Figure 4 A schematic diagram of the refrigerant connection structure in one embodiment of the present invention is shown.

[0044] Figure 5 A schematic diagram of the interface arrangement of an eight-way valve in one embodiment of the present invention is shown.

[0045] Figure 6 A schematic diagram showing the interface connection mode of an eight-way valve in one embodiment of the present invention is shown.

[0046] Among them, 1. heat exchanger; 2. motor electronic control cooling device; 3. low-temperature radiator; 4. condenser; 5. water heating PTC; 6. heater core; 7. power battery pack; 8. coolant circulation water pump; 9. evaporator; 10. motor electronic control branch; 11. battery branch; 12. passenger compartment heating branch; 13. heat exchanger branch; 14. outdoor heat exchanger; 15. short-circuit pipeline; 16. first proportional three-way valve; 17. second proportional three-way valve. DETAILED DESCRIPTION

[0047] Example

[0048] like Figures 1 to 3 As shown, the multi-way valve thermal management system includes a motor electronically controlled cooling device 2, a condenser 4, a water heating PTC 5, a heater core 6 and a power battery pack 7.

[0049] Among them, the motor electronic control cooling device 2, condenser 4, water heating PTC 5, heater core 6 and power battery pack 7 are all connected to the multi-way valve through the flow channel plate to form a loop for circulating the coolant;

[0050] The multi-way valve includes at least one movable valve core, which switches the connection or closure between multiple pipelines through the movable valve core;

[0051] The multi-way valve includes at least a movable valve core that switches multiple pipelines to the following states:

[0052] The motor electronically controlled cooling device 2 is connected in series with the multi-way valve to form a motor electronically controlled branch 10;

[0053] The power battery pack 7 is connected in series with the multi-way valve to form a battery branch 11;

[0054] The condenser 4, the water heating PTC 5, the heater core 6 and the multi-way valve are connected in series to form a passenger compartment heating branch 12;

[0055] The passenger compartment heating branch 12, the motor and electronic control branch 10, and the battery branch 11 are interconnected through a multi-way valve to form a loop;

[0056] The passenger compartment heating branch 12 includes two parallel short-circuit pipelines 15 on the side connected to the multi-way valve;

[0057] At least one of the two short-circuit lines 15 can be closed by the first proportional three-way valve 16 .

[0058] The application of the present invention improves the integration of the coolant circuit, reduces the number of components of the thermal management system, and comprehensively manages the dispersed thermal management systems to reduce energy waste.

[0059] Furthermore, the present invention connects the motor electronic control cooling device 2 to the power battery pack 7, thereby recovering the waste heat of the motor electronic control branch 10 to the power battery pack 7, and then connecting it to the passenger compartment heating branch 12. When the motor electronic control waste heat cannot meet the heat demand of the battery pack, part or all of the heat in the passenger compartment heating branch 12 is brought into the battery branch 11 by adjusting the first proportional three-way valve 16.

[0060] In some embodiments, the multi-way valve thermal management system further includes a heat exchanger 1 , which is connected in series with the multi-way valve to form a heat exchanger branch 13 .

[0061] The heat exchanger 1 is usually provided with a flow channel for the coolant and a flow channel for the refrigerant, so that the main function of the heat exchanger 1 is to perform heat exchange between the coolant and the refrigerant. In actual applications, the heat exchanger 1 is usually a plate heat exchanger, whose English name is Chiller.

[0062] In this application, since the coolant circuit itself can achieve waste heat recovery, heat exchanger 1 is not required to perform heat exchange, and thus heat exchanger 1 is not connected to the coolant circuit. However, in other embodiments, by providing heat exchanger 1 and heat exchanger circuit 13, it can be applied to the refrigerant circuit or other circuits, thereby expanding the operating conditions that can be achieved by the multi-way valve thermal management system.

[0063] It should be noted that the refrigerant and coolant in this application are different media and serve different functions. Specifically, refrigerant generally refers to a refrigerant, which is a working substance that actively achieves cooling by changing its state; coolant generally refers to a mixture of water and ethylene glycol, which is a medium that passively exchanges heat.

[0064] The low temperature radiator 3 mainly plays the role of heat dissipation, and its English abbreviation is LTR;

[0065] The condenser 4 is usually an indirect condenser in practical applications, and its English name is I-COND. It has four ports, two of which are used to allow the coolant to pass through and are connected to the circuit flowing through the coolant; the other two ports are used to allow the refrigerant to pass through and are connected to the circuit flowing through the refrigerant.

[0066] When the passenger compartment heating branch 12 is in a heating state, the coolant flowing through the I-COND absorbs heat from the refrigerant to increase its temperature.

[0067] The water heating PTC5 plays the role of heating the coolant;

[0068] The coolant exchanges heat with the air through the heater core 6, and the blower accelerates the air flow on the surface of the heater core to achieve the purpose of continuous heat exchange. The heater core also has the function of heat dissipation.

[0069] like Figures 1 to 3 As shown, in certain embodiments, the multi-way valve of one embodiment is an eight-way valve, including eight interfaces, namely C1 to C8.

[0070] Among them, the C1 interface and the C2 interface are respectively connected to the outlet and inlet of the passenger compartment heating branch 12, the C3 interface and the C4 interface are respectively connected to the inlet and outlet of the battery branch 11, the C5 interface and the C6 interface correspond to the inlet and outlet of the heat exchanger branch 13, and the C7 interface and the C8 interface correspond to the inlet and outlet of the motor electronic control branch 10.

[0071] Specifically, the eight interfaces are connected to each other as follows: the C1 interface and the C7 interface are connected to each other, the C2 interface and the C4 interface are connected to each other, the C3 interface and the C8 interface are connected to each other, and the C5 interface and the C6 interface are not connected, thereby realizing a large series connection of the motor electronic control branch 10, the battery branch 11, and the passenger compartment heating branch 12.

[0072] In other embodiments, the number of interfaces of the multi-way valve may also be 9, 10, 11, etc., as long as the above-mentioned connection method can be realized.

[0073] In certain embodiments, a second proportional three-way valve 17 is provided in the motor electronic control branch 10. The low-temperature radiator 3 is connected in parallel to the outlet of the motor electronic control cooling device 2 via the second proportional three-way valve 17, thereby providing a bypass function for the motor electronic control branch 10. The corresponding coolant flow rate is distributed via the second proportional three-way valve 15. When the coolant flows through the low-temperature radiator 3, the second proportional three-way valve 17 is closed; when the coolant flows directly back to the multi-way valve without passing through the low-temperature radiator 3, the second proportional three-way valve 17 is open.

[0074] In the above connection state, the multi-way valve thermal management system of the present application can achieve two working conditions, namely:

[0075] Working condition 1: the battery pack recovers the waste heat of the motor and electronic control, and heats the passenger compartment and the power battery pack 7 together;

[0076] Working condition 2: the battery pack recovers the waste heat of the motor and electronic control, blows air into the passenger compartment, and heats the power battery pack 7;

[0077] Please refer to Figure 2 , specifically, in Case 1:

[0078] In working condition 1, the first proportional three-way valve 16 is in proportional adjustment state, that is, both short-circuit pipelines 15 are in passage state; the second proportional three-way valve 17 is in open state, that is, the coolant does not pass through the low-temperature radiator 3.

[0079] In the loop, the motor electronic control branch 10 is connected to the battery branch 11 and the passenger compartment heating branch 12, that is, the motor electronic control cooling device 2 is connected to the power battery pack 7 through a multi-way valve, and then to the condenser 4, the water heating PTC 5, and the heater core 6 to form a coolant circuit. The coolant passes through the motor electronic control cooling device 2 instead of the low-temperature radiator 3, and takes out the excess heat in the motor electronic control device 2 to heat the power battery pack 7, so as to achieve the purpose of recovering the waste heat of the motor electronic control to the power battery pack 7.

[0080] When the waste heat from the motor and electronic control cannot meet the heat requirements of the power battery pack 7, the passenger compartment heating branch 12 can be used to supplement the heat supply to the power battery pack 7. The heat for the passenger compartment heating branch 12 can come from heat dissipation in the condenser 4 or from heating by the water-heating PTC 5. Both methods heat the coolant in the passenger compartment heating branch 12 and adjust the first proportional three-way valve 16 to transfer some or all of the heat in the passenger compartment heating branch 12 to the battery branch 11.

[0081] The condenser 4, water heating PTC 5, heater core 6 and power battery pack 7 are connected in series via a multi-way valve in the passenger compartment heating branch 12. The coolant passes through two short-circuit pipelines 15. The specific process is as follows:

[0082] For the short-circuit pipeline 15 with the first proportional three-way valve 16 , part of the coolant flowing out of the heater core 6 returns to the condenser 4 through the first proportional three-way valve 16 , and the other part passes through the first proportional three-way valve 16 into the power battery pack 7 .

[0083] For the other short-circuit line 15 without the first proportional three-way valve 16, the coolant flows from point b to point a of the short-circuit line 15, then passes through the multi-way valve from point a into the power battery pack 7, and then passes through the multi-way valve back to point b to enter the next cycle.

[0084] The coolant flowing in the circuit as described above can heat the passenger compartment and the power battery pack 7 together.

[0085] The working process of the passenger compartment heating branch 12 is divided into two working states:

[0086] (1) In the heat pump heating state, in the passenger compartment heating branch 12, the high-temperature and high-pressure refrigerant coming out of the compressor enters the condenser 4. In the condenser 4, on the refrigerant side, the refrigerant releases heat and becomes a medium-temperature and high-pressure liquid refrigerant that flows out. On the coolant side, the coolant absorbs heat. The coolant with increased temperature flows through the water heating PTC5 (at this time, the water heating PTC5 only serves as a pipeline for circulation and does not perform temperature regulation) and enters the heater core 6. Under the action of the blower, the heat in the coolant is released into the passenger compartment through the heater core 6. The coolant flowing out of the heater core returns to the coolant circulation water pump 8 through the V1V2 channel of the proportional three-way valve and enters the next cycle.

[0087] (2) Water heating state: when the ambient temperature drops and the efficiency of the heat pump heating decreases, it is necessary to start the water heating PTC5 at the same time to heat the coolant in the passenger compartment heating branch 12 to the target temperature to ensure the heating requirements of the passenger compartment.

[0088] Please refer to Figure 3 , specifically, in Case 2:

[0089] In working condition 2, the first proportional three-way valve 16 is in a closed state, that is, only one of the two short-circuit pipelines 15 is in a flow state; the second proportional three-way valve 17 is in an open state, that is, the coolant does not pass through the low-temperature radiator and flows directly to the multi-way valve.

[0090] In working condition 2, in the circuit, a short-circuit pipeline 15 is closed by the first proportional three-way valve 16;

[0091] In this state, the passenger compartment does not need to be heated. The heat is obtained from the condenser 4 and brought to the heater core 6 through the coolant. No wind passes through the heater core 6 and no heat exchange occurs. The coolant coming out of the heater core 6 enters the power battery pack 7. The system's heating is used to heat the power battery pack 7.

[0092] When the passenger compartment does not need to be heated, the heating of the power battery pack 7 first absorbs the excess heat in the motor electronic control branch 10. When this heat cannot meet the heating needs of the power battery pack 7, the power battery pack 7 can be supplemented with heat through the passenger compartment heating branch 12.

[0093] The heat of the passenger compartment heating branch 12 can come from the heat dissipation of the condenser or from the heating of the water heating PTC5. Both methods heat the coolant in the passenger compartment heating branch 12. When passing through the heater core 6, the passenger compartment has no heating demand and no heat exchange is performed. The coolant coming out of the heater core 6 enters the power battery pack 7. The heating of the passenger compartment heating branch 12 is used to heat the power battery pack 7.

[0094] In some embodiments, a coolant circulation water pump 8 is provided in the motor electronic control branch 10 , the battery branch 11 and the passenger compartment heating branch 12 .

[0095] Specifically, a coolant circulation water pump 8 is arranged on the water inlet side of the power battery pack 7, and its function is to provide power for the coolant circulation in the battery branch 11; a coolant circulation water pump 8 is arranged on the water inlet side of the motor electronic control cooling device 2, and its function is to provide power for the coolant circulation in the motor electronic control branch 10; a coolant circulation water pump 8 is arranged on the water inlet side of the condenser 4, and its function is to provide power for the coolant in the passenger compartment heating circuit 12.

[0096] Please refer to Figure 4 , Figure 4 1 shows a refrigerant circulation circuit in some embodiments of the present application. In some embodiments, a refrigerant circuit is provided between the heat exchanger 1 and the condenser 4;

[0097] When the passenger compartment heating branch 12 is in the passenger compartment heating or dehumidification mode, the heat in the passenger compartment heating branch 12 comes from the condenser 4 when the heat pump is heating. If the heat is insufficient, the water heating PTC 5 works to heat the coolant in the passenger compartment heating branch to meet the heating demand in the dehumidification mode.

[0098] The refrigerant transfers the heat it carries to the coolant in the passenger compartment heating branch 12 through the condenser 4 .

[0099] When heat is to be dissipated through the condenser 4, it is necessary to absorb heat from the environment through the outdoor heat exchanger to achieve heating of the passenger compartment.

[0100] like Figure 4 As shown, in some embodiments, the branch through which the refrigerant flows is further provided with an evaporator 9 and an outdoor heat exchanger 14. Specifically, the evaporator 9 is located in the passenger compartment, and the outdoor heat exchanger 14 is located outside the passenger compartment. Figure 4 The refrigerant circuit shown enables heating or cooling of the passenger compartment.

[0101] The refrigerant circuit heats the passenger compartment by heating the condenser 4. The working principle is as follows:

[0102] The outdoor environment causes the condenser 4 to heat up, and the outdoor heat exchanger 14 absorbs the temperature of the external environment and transfers the heat to the condenser 4 through the refrigerant circuit.

[0103] The refrigerant circuit cools the passenger compartment by cooling the evaporator 9. Its operating principle is as follows: refrigerant flowing through the outdoor heat exchanger 14 enters the evaporator 9, which absorbs heat from the environment and vaporizes the refrigerant. The evaporator 9 is located inside the passenger compartment, thus achieving cooling of the passenger compartment. In dehumidification mode, the passenger compartment needs to be cooled and heated simultaneously.

[0104] In operating condition 1, the vehicle's passenger compartment can also be dehumidified. This requires simultaneous cooling and heating. The cooling principle is as follows: refrigerant flowing through the evaporator absorbs heat from the passenger compartment, achieving a cooling effect. Condenser 4 heats the coolant in the passenger compartment, which is then dissipated to the passenger compartment through the heater core. This simultaneous heating and cooling achieves dehumidification.

[0105] In practical applications, the cooling of the vehicle passenger compartment is completed by the evaporator 9. Figures 1 to 3 The evaporator 9 is not shown and has nothing to do with the circuit through which the coolant flows.

[0106] In some embodiments, the heater core 6 is mounted together with the evaporator 9 and is provided with a blower;

[0107] The blower, heater core 6 and evaporator 9 are arranged in the passenger compartment;

[0108] The blower is used to accelerate the air passing through the heater core 6 and the evaporator to achieve heat exchange.

[0109] In some embodiments, a condensing fan is provided at the low-temperature radiator 3;

[0110] The condensing fan is used to assist in heat dissipation.

[0111] By setting up the blower, the air circulation in the passenger compartment of the vehicle is enhanced, so that in working condition 1, the dehumidification of the passenger compartment of the vehicle can also be achieved. In working condition 2, the vehicle realizes the blowing of the passenger compartment of the vehicle.

[0112] refer to Figure 5 In some embodiments where the multi-way valve is an eight-way valve, interfaces C1 through C8 are arranged in a nine-square grid to conserve space. Corresponding to the specific locations of the nine-square grid, interface C1 is located in the second row, first column; interface C2 is located in the third row, first column; interface C3 is located in the second row, second column; interface C4 is located in the third row, second column; interface C5 is located in the third row, third column; interface C6 is located in the first row, second column; interface C7 is located in the first row, first column; and interface C8 is located in the second row, third column. The interfaces in the first row, third column can be interconnected with other interfaces, thereby expanding the connection options of the eight-way valve.

[0113] refer to Figure 6 In some embodiments, the specific connection method of interfaces C1 to C8 is as follows: Figure 6 shown.

[0114] In some embodiments, the flow channel plate includes multiple flow channels for conveying coolant, and the multiple flow channels are arranged parallel to each other and one end is connected to the multi-way valve, and the other end is connected to the corresponding heat exchanger 1, motor electronic control cooling device 2, low-temperature radiator 3, condenser 4, water heating PTC 5, heater core 6 or power battery pack 7.

[0115] The present invention also provides a vehicle that adopts any one of the multi-way valve thermal management systems described above.

[0116] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A multi-way valve thermal management system, comprising a motor electronically controlled cooling device (2), a condenser (4), a water heating PTC (5), a heater core (6) and a power battery pack (7); characterized in that: The motor electronically controlled cooling device (2), the condenser (4), the water-heating PTC (5), the heater core (6) and the power battery pack (7) are all connected to a multi-way valve via a flow channel plate to form a loop for circulating the coolant; The multi-way valve includes at least one movable valve core, through which the connection or closure between multiple pipelines is switched; The multi-way valve at least includes the movable valve core that switches the plurality of pipelines to the following states: The motor electronically controlled cooling device (2) is connected in series with the multi-way valve to form a motor electronically controlled branch circuit (10); The power battery pack (7) and the multi-way valve are connected in series to form a battery branch (11); The condenser (4), the water heating PTC (5), the warm air core (6) and the multi-way valve are connected in series to form a passenger cabin heating branch (12); The passenger compartment heating branch (12), the motor electronic control branch (10), and the battery branch (11) are interconnected via the multi-way valve to form a loop; The passenger compartment heating branch (12) includes two parallel short-circuit pipelines (15) on the side connected to the multi-way valve; At least one of the two short-circuit pipelines (15) can be closed by a first proportional three-way valve (16); The multi-way valve includes a C1 interface, a C2 interface, a C3 interface, a C4 interface, a C7 interface and a C8 interface; The C1 interface and the C2 interface are connected to the inlet and outlet of the passenger compartment heating branch (12), respectively; the C3 interface and the C4 interface are connected to the inlet and outlet of the battery branch (11), respectively; and the C7 interface and the C8 interface correspond to the inlet and outlet of the motor electronic control branch (10), respectively. The C1 interface and the C7 interface are interconnected, the C2 interface and the C4 interface are interconnected, and the C3 interface and the C8 interface are interconnected; The multi-way valve thermal management system further comprises a heat exchanger (1), wherein the heat exchanger (1) and the multi-way valve are connected in series to form a heat exchanger branch (13), and the multi-way valve further comprises a C5 interface and a C6 interface, wherein the C5 and C6 interfaces are connected to the inlet and outlet of the heat exchanger branch (13) respectively, and the C5 and C6 interfaces are not connected to each other; A connection is achieved between the C1 interface and the condenser (4) by providing a plurality of tees at the location where the condenser (4) is connected to the two short-circuit pipelines (15); A connection is achieved between the C2 interface and the heater core (6) by providing a plurality of tees at the location where the heater core (6) is connected to the two short-circuit pipelines (15); The motor electronic control branch (10), the battery branch (11), and the passenger compartment heating branch (12) are all provided with a coolant circulation water pump (8); A coolant circulation water pump (8) is provided between the power battery pack (7) and the C3 interface connected to the multi-way valve; A coolant circulation water pump (8) is provided between the C7 interface connected to the motor electronically controlled cooling device (2) and the multi-way valve.

2. The multi-way valve thermal management system according to claim 1, characterized in that: A second proportional three-way valve (17) is provided in the motor electronic control branch (10), and the low-temperature radiator (3) is connected in parallel to the outlet side of the motor electronic control cooling device (2) through the second proportional three-way valve (17), so that the motor electronic control branch (10) has a bypass effect, and the corresponding coolant flow is distributed through the second proportional three-way valve (15).

3. The multi-way valve thermal management system according to claim 2, characterized in that: The low-temperature radiator (3) is provided with a condensing fan; the condensing fan is used to assist in heat dissipation.

4. The multi-way valve thermal management system according to claim 1, characterized in that: The condenser (4) is further provided with a circuit for flowing a refrigerant, the circuit for flowing the refrigerant is provided with an evaporator (9), the heater core (6) and the evaporator (9) are assembled together, and / or a blower is provided at the heater core (6), and / or the circuit for flowing the refrigerant is further provided with an outdoor heat exchanger (14); When the passenger compartment heating branch (12) is in the passenger compartment heating or dehumidification working condition, heat comes from the condenser (4). If the heat is insufficient, the water heating PTC (5) works to heat the coolant in the passenger compartment heating branch (12) to meet the needs of heating or dehumidification; The refrigerant transfers the heat carried by the refrigerant to the coolant of the passenger compartment heating circuit (12) through the condenser (4); The blower, the heater core (6) and the evaporator (9) are arranged in the passenger compartment; the blower is used to accelerate the air passing through the heater core (6) and the evaporator (9) to achieve heat exchange.

5. The multi-way valve thermal management system according to claim 2, characterized in that: The flow channel plate includes a plurality of flow channels for conveying coolant, wherein the plurality of flow channels are arranged in parallel with each other and one end of each of the flow channels is connected to the multi-way valve, and the other end of each of the flow channels is connected to the corresponding heat exchanger (1), the motor electronic control cooling device (2), the low-temperature radiator (3), the condenser (4), the water heating PTC (5), the heater core (6) or the power battery pack (7).

6. A means of transport, characterized in that: A multi-way valve thermal management system according to any one of claims 1 to 5 is employed.

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