Thermally managed system architecture based on fourteen-way valve and control method thereof

Abstract

The application discloses a heat management system architecture based on a fourteen-way valve and a control method thereof, and relates to a vehicle heat management system, wherein the heat management system architecture comprises an air conditioning loop, a battery loop, an electric drive loop and a heating air loop; the air conditioning loop, the battery loop, the electric drive loop and the heating air loop are connected to each other through a fourteen-way valve; wherein the air conditioning loop comprises at least two heat exchange elements; the fourteen-way valve can be used to connect different two valve ports through different liquid paths, so that the battery loop, the electric drive loop and the heating air loop can be turned on according to a target working mode, and heat exchange is performed at the heat exchange elements and the air conditioning loop to control the energy flow of the heat management system. On the basis of meeting the reasonable flow of energy between the heat management system, the overall heat management architecture is greatly simplified, and the design cost is saved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicle thermal management system, in particular to a thermal management system architecture based on a fourteen-way valve and a control method thereof. BACKGROUND

[0002] The energy consumption of an electric vehicle directly affects the vehicle's endurance. The whole vehicle thermal management system has a great influence on the whole vehicle energy consumption, such as cabin heating at low temperature and power battery heating, which will consume a lot of power battery power and reduce the vehicle's endurance.

[0003] In order to reduce the energy consumption of the thermal management system, the current electric vehicle mostly uses an integrated thermal management system with a heat pump system. Compared with the traditional cabin electric heating scheme, the heat pump system can reduce the energy consumption of the cabin heating, and the integrated scheme integrates the electric drive cooling system, the power battery temperature control system and the air conditioning system, which can connect the systems and realize the flow of heat between the systems.

[0004] However, in order to realize the reasonable flow of heat, the integrated thermal management system with a heat pump system mostly needs a complex circuit connection, for example, a plurality of water valves or expansion valves are needed, which greatly affects the cost and complexity of the whole thermal management system. Therefore, we propose a thermal management system architecture based on a fourteen-way valve. SUMMARY

[0005] In view of the above defects or deficiencies in the prior art, it is desirable to provide a thermal management system architecture based on a fourteen-way valve and a control method thereof.

[0006] In a first aspect, the present application provides a thermal management system architecture based on a fourteen-way valve, which comprises at least an air conditioning circuit, a battery circuit, an electric drive circuit and a warm air circuit.

[0007] The air conditioning circuit, the battery circuit, the electric drive circuit and the warm air circuit are connected to each other through a fourteen-way valve; wherein the air conditioning circuit comprises at least two heat exchange elements.

[0008] The fourteen-way valve has fourteen valve ports, and each two valve ports of the fourteen-way valve are connected to a circuit. The fourteen-way valve is internally provided with a rotatable valve core, and the valve core forms a plurality of independently arranged liquid passage channels.

[0009] Under the rotation of the valve core, different liquid passage channels connect different two valve ports, and the battery circuit, the electric drive circuit and the warm air circuit can be conducted according to the target working mode, and heat exchange is performed at the heat exchange element and the air conditioning circuit to control the energy flow of the thermal management system.

[0010] According to the technical scheme provided in the application, the fourteen valve ports of the fourteen-way valve form first to fourteenth ports in sequence.

[0011] The battery circuit is connected with the first port and the eighth port respectively, the electric drive circuit is connected with the fifth port and the twelfth port respectively, and the warm air circuit is connected with the sixth port and the seventh port respectively.

[0012] According to the technical scheme provided in the application, the two heat exchange elements in the air conditioning circuit are a warm air core and a cooler respectively, and in the air conditioning circuit, the compressor, the warm air core, the cooler and the gas-liquid separator are connected in sequence to form a circulation flow path.

[0013] The warm air core has a first heat exchange channel and a second heat exchange channel, and the cooler has a third heat exchange channel and a fourth heat exchange channel.

[0014] One end of the first heat exchange channel is connected with the output end of the compressor, the other end of the first heat exchange channel is connected with the third heat exchange channel, and the other end of the third heat exchange channel is connected with the input end of the gas-liquid separator.

[0015] According to the technical scheme provided in the application, the air conditioning circuit further comprises a first branch circuit connected in parallel on both sides of the cooler.

[0016] A first electronic expansion valve is arranged between the warm air core and the cooler, one end of the first branch circuit is connected between the first electronic expansion valve and the warm air core, and the other end of the first branch circuit is connected with the input end of the gas-liquid separator.

[0017] A second electronic expansion valve and an evaporator are arranged in sequence on the first branch circuit.

[0018] According to the technical scheme provided in the application, the battery circuit at least comprises a power battery.

[0019] The electric drive circuit at least comprises an electric drive water pump, a power supply assembly and an electric drive assembly, wherein the output end of the electric drive water pump is connected with the power supply assembly, and the input end of the electric drive water pump is connected with the fifth port; one end of the electric drive assembly is connected with the power supply assembly, and the other end of the electric drive assembly is connected with the twelfth port.

[0020] The warm air circuit at least comprises a warm air water pump, a condenser and the warm air core in the air conditioning circuit, wherein the output end of the warm air water pump is connected with the condenser, and the input end of the warm air water pump is connected with the seventh port; the output end of the condenser is connected with the input end of the second heat exchange channel, and the output end of the second heat exchange channel is connected with the sixth port.

[0021] According to the technical scheme provided in the application, the heat management system architecture further comprises a circulating water loop, a heat dissipation loop, a first auxiliary branch and a second auxiliary branch.

[0022] Two ends of the circulating water loop are connected with the second port and the ninth port respectively; two ends of the heat dissipation loop are connected with the fourth port and the eleventh port respectively; two ends of the first auxiliary branch are connected with the third port and the tenth port respectively; two ends of the second auxiliary branch are connected with the thirteenth port and the fourteenth port respectively; and the first auxiliary branch is communicated with two ends of the fourth heat exchange channel.

[0023] According to the technical scheme provided in the application, the circulating water loop at least comprises a circulating water pump.

[0024] The output end of the circulating water pump is connected with the second port, and the input end thereof is connected with the ninth port.

[0025] The heat dissipation loop at least comprises a radiator.

[0026] According to the technical scheme provided in the application, the fourteen-way valve has multiple working states.

[0027] In one of the working states, the first port and the second port are communicated; the third port and the fourth port are communicated; the fifth port and the fourteenth port are communicated; the sixth port and the seventh port are communicated; the eighth port and the eleventh port are communicated; the ninth port and the tenth port are communicated; and the twelfth port and the thirteenth port are communicated.

[0028] The warm air loop and the air conditioning loop perform heat exchange at the warm air core body; the electric drive loop and the second auxiliary branch form a circulating liquid path; and the battery loop, the circulating water loop, the heat dissipation loop and the first auxiliary branch form a circulating liquid path and perform heat exchange at the cooler.

[0029] In a second aspect, the application provides a control method of a heat management system architecture based on a fourteen-way valve, based on the heat management system architecture based on the fourteen-way valve, the control method comprises the following steps.

[0030] Obtaining a first temperature regulation requirement of a heat management system of a target vehicle and multiple working condition parameters of the heat management system; the first temperature regulation requirement at least comprises cooling and heating requirements of an electric drive module, a battery module and a passenger cabin; and the multiple working condition parameters at least comprise driving conditions, environmental conditions, battery operation conditions and electric drive operation conditions.

[0031] confirm a target working mode of the thermal management system based on the first temperature regulation requirement and current working condition parameters of the thermal management system;

[0032] According to the port connection condition of the fourteen-way valve in the target working mode, the valve core in the fourteen-way valve is controlled to rotate by a corresponding angle to realize the connection of the corresponding ports.

[0033] According to the technical scheme provided in the application, the control method further comprises:

[0034] If the air conditioning circuit needs to be filled with refrigerant, a refrigerant filling mode in the thermal management system is selected, and the valve core in the fourteen-way valve is controlled to rotate according to the port connection condition corresponding to the refrigerant filling mode.

[0035] In summary, the technical scheme specifically discloses a thermal management system architecture based on a fourteen-way valve and a control method thereof, wherein the thermal management system architecture comprises an air conditioning circuit, a battery circuit, an electric drive circuit, and a heater circuit; the air conditioning circuit, the battery circuit, the electric drive circuit, and the heater circuit are connected to each other through a fourteen-way valve; the air conditioning circuit comprises at least two heat exchange components; the fourteen-way valve has fourteen valve ports, and each two valve ports of the fourteen-way valve are connected to one circuit; the fourteen-way valve is internally provided with a rotatable valve core, and the valve core internally forms a plurality of independently arranged liquid path channels; under the rotation of the valve core, different liquid path channels are connected to different two valve ports, the battery circuit, the electric drive circuit, and the heater circuit can be connected according to a target working mode, and heat exchange is performed at the heat exchange components and the air conditioning circuit, so as to control the energy flow of the thermal management system.

[0036] The existing integrated thermal management system with a heat pump system needs complex circuit connection to realize reasonable heat flow, which has a certain influence on the cost and complexity of the entire thermal management system. In the present application, the air conditioning circuit, the battery circuit, the electric drive circuit, and the heater circuit are connected to each other through a fourteen-way valve, so that the structure of each circuit is simplified and the overall complexity of the thermal management system architecture is reduced; through the connection of different valve ports, the corresponding circuits can be connected, without the need to set too many pipelines or valve body structures, and the heat exchange between the multiple circuits and the air conditioning circuit at the heat exchange components can be realized, thereby optimizing the energy flow in the thermal management system. BRIEF DESCRIPTION OF DRAWINGS

[0037] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0038] Figure 1 FIG. 1 is a first connection working condition schematic diagram of the thermal management system architecture based on the fourteen-way valve.

[0039] Figure 2 Second connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0040] Figure 3 Third connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0041] Figure 4 Fourth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0042] Figure 5 Fifth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0043] Figure 6 Sixth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0044] Figure 7 Seventh connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0045] Figure 8 Eighth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0046] Figure 9 Ninth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0047] Figure 10 Tenth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0048] Figure 11 Eleventh connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0049] Figure 12 Twelfth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0050] Figure 13 Thirteenth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0051] Figure 14 Fourteenth connection condition schematic diagram of the heat management system architecture based on the fourteen-way valve.

[0052] Figure 15 Port schematic diagram of the fourteen-way valve in the heat management system architecture based on the fourteen-way valve.

[0053] Figure 16 Flowchart of the control method of the heat management system architecture based on the fourteen-way valve.

[0054] Fig. The labels in the figure: 1, air conditioning circuit; 2, battery circuit; 3, electric drive circuit; 4, heating circuit; 5, fourteen-way valve; 6, compressor; 7, heating core; 8, cooler; 9, gas-liquid separator; 10, first electronic expansion valve; 11, second electronic expansion valve; 12, evaporator; 13, power battery; 14, electric drive water pump; 15, power supply assembly; 16, electric drive assembly; 17, heating water pump; 18, condenser; 19, circulating water circuit; 20, heat dissipation circuit; 21, first auxiliary branch; 22, second auxiliary branch; 23, circulating water pump; 001, first port; 002, second port; 003, third port; 004, fourth port; 005, fifth port; 006, sixth port; 007, seventh port; 008, eighth port; 009, ninth port; 010, tenth port; 011, eleventh port; 012, twelfth port; 013, thirteenth port; 014, fourteenth port; 71, first heat exchange channel; 72, second heat exchange channel; 81, third heat exchange channel; 82, fourth heat exchange channel. DETAILED DESCRIPTION

[0055] The application will be further described below in conjunction with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description.

[0056] It should be noted that the examples in the present application and the features in the examples can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the examples.

[0057] Example 1

[0058] Please refer to Figures 1-14 The first to fourteenth interconnection working condition diagrams of the heat management system architecture based on the fourteen-way valve provided by the present embodiment are shown. The heat management system architecture at least includes: an air conditioning circuit 1, a battery circuit 2, an electric drive circuit 3, and a heating circuit 4;

[0059] The air conditioning circuit 1, the battery circuit 2, the electric drive circuit 3, and the heating circuit 4 are interconnected by a fourteen-way valve 5; wherein the air conditioning circuit 1 includes at least two heat exchange elements;

[0060] The fourteen-way valve 5 has fourteen valve ports, and every two valve ports of the fourteen-way valve 5 are connected with a circuit; the fourteen-way valve 5 is internally provided with a rotatable valve core, and the valve core internally forms a plurality of independently arranged liquid path channels;

[0061] Under the rotation of the valve core, different liquid path channels are connected to different two valve ports, the battery circuit 2, the electric drive circuit 3 and the warm air circuit 4 can be conducted according to the target working mode, and heat exchange is carried out at the heat exchange member with the air conditioning circuit 1 to control the energy flow of the thermal management system.

[0062] In the embodiment of the present application, the thermal management system architecture at least includes: the air conditioning circuit 1, the battery circuit 2, the electric drive circuit 3 and the warm air circuit 4, which can be used to realize the heating and cooling of the passenger cabin, the heating and cooling of the battery and the electric drive and other whole vehicle function requirements.

[0063] Because the current integrated thermal management system needs to realize the reasonable flow of heat, it mostly needs complex circuit connection; accordingly, various thermal management components such as water valves or electronic valves are also arranged, which makes its own architecture complex; therefore, the air conditioning circuit 1, the battery circuit 2, the electric drive circuit 3 and the warm air circuit 4 are connected to each other through a fourteen-way valve 5 in the embodiment of the present application, so that each circuit can be conducted according to the target working mode, greatly simplifying the thermal management system architecture; specifically, because the fourteen-way valve 5 has fourteen valve ports, and each two valve ports of the fourteen-way valve 5 are connected to the two ends of one circuit, and the valve core in the fourteen-way valve 5 has multiple liquid path channels, under the rotation of the valve core, different valve ports are connected through different liquid path channels in different connection forms; the different liquid path channels in different connection forms are, for example, liquid path channels connecting adjacent valve ports, liquid path channels connecting interval valve ports or liquid path channels connecting interval two valve ports, etc.

[0064] Based on the above content and Figure 1 The structure shown, the air conditioning circuit 1 is provided with two heat exchange members for heat exchange between circuits, and the fourteen-way valve 5 is conducted according to the target working mode, so that the battery circuit 2, the electric drive circuit 3 and the warm air circuit 4 can be heat exchanged with the air conditioning circuit 1 at the heat exchange member, which is convenient for reasonably configuring the energy flow between circuits; wherein the warm air circuit 4 is connected to one of the heat exchange channels in the heat exchange member, thereby realizing the heating and cooling of the passenger cabin.

[0065] Referring to Figure 1 and Figure 2 In a preferred embodiment, the fourteen valve ports of the fourteen-way valve 5 form first port 001 to fourteenth port 014 in sequence;

[0066] Among them, the battery circuit 2 is connected with the first port 001 and the eighth port 008 respectively; the electric drive circuit 3 is connected with the fifth port 005 and the twelfth port 012 respectively; the warm air circuit 4 is connected with the sixth port 006 and the seventh port 007 respectively.

[0067] It needs to be explained that the ports formed by the valve ports of the fourteen-way valve are further limited to the first to fourteenth ports, which is only for the convenience of explaining the connection and cooperation between each port and the circuit. In essence, the valve ports themselves have no essential distinction.

[0068] In a preferred embodiment, the two heat exchange elements in the air conditioning circuit are the heater core 7 and the cooler 8, and in the air conditioning circuit, the compressor 6, the heater core 7, the cooler 8, and the gas-liquid separator 9 are connected in sequence to form a circulating flow path.

[0069] The heater core 7 has a first heat exchange channel 71 and a second heat exchange channel 72; the cooler 8 has a third heat exchange channel 81 and a fourth heat exchange channel 82.

[0070] The output end of the compressor 6 is connected to one end of the first heat exchange channel 71, the other end of the first heat exchange channel 71 is connected to the third heat exchange channel 81, and the other end of the third heat exchange channel 81 is connected to the input end of the gas-liquid separator 9.

[0071] Specifically, the two heat exchange elements are the heater core 7 and the cooler 8, and each has a first heat exchange channel 71 and a second heat exchange channel 72, and a third heat exchange channel 81 and a fourth heat exchange channel 82, respectively, for heat exchange between two different temperature media; further, in the air conditioning circuit, the heater core 7 is usually located in the heater core water tank, and the compressor 6 compresses the refrigerant into high-temperature and high-pressure gaseous refrigerant, which then enters the circulating flow path to participate in heat exchange.

[0072] Further, in the refrigeration working condition, the high-temperature and high-pressure gaseous refrigerant flows through the heater core 7 and is converted into medium-temperature or low-temperature and high-pressure liquid refrigerant through heat exchange, thereby transferring the heat in the passenger compartment; subsequently, the medium-temperature or low-temperature and high-pressure liquid refrigerant further exchanges heat with the medium in the fourth heat exchange channel 82 at the cooler through the first electronic expansion valve 10, and finally returns to the compressor 6 through the gas-liquid separator 9; here, the gas-liquid separator 9 is designed to separate the gas and liquid components in the fluid, ensuring that the refrigerant returning to the compressor 9 operates in the correct state.

[0073] Referring to Figure 2 In a preferred embodiment, the air conditioning circuit further comprises: a first branch circuit connected in parallel on both sides of the cooler 8.

[0074] The first electronic expansion valve 10 is arranged between the heater core 7 and the cooler 8, one end of the first branch circuit is connected between the first electronic expansion valve 10 and the heater core 7, and the other end is connected to the input end of the gas-liquid separator 9.

[0075] The second electronic expansion valve 11 and the evaporator 12 are arranged in sequence on the first branch circuit.

[0076] Specifically, the evaporator 12 is generally arranged in the air conditioning box, and the evaporator 12 is connected in parallel with the cooler 8 through the first branch circuit. The medium is converted into medium at medium or low temperature in the heat exchange at the warm air core 7. The low-temperature liquid refrigerant is converted into vapor by the evaporator 12 after passing through the second electronic expansion valve 11, and the heat of the cooled medium is absorbed, so that the corresponding refrigeration purpose is achieved. In addition, the first electronic expansion valve 10 and the second electronic expansion valve 11 can be used for pressure reduction, throttling and flow regulation of the medium entering the cooler 8 and the evaporator 12.

[0077] Referring to Figure 1 , Figure 3 and Figure 4 , in a preferred embodiment, the battery circuit 2 at least includes a power battery 13.

[0078] The electric drive circuit 3 at least includes an electric drive water pump 14, a power assembly 15 and an electric drive assembly 16. The output end of the electric drive water pump 14 is connected with the power assembly 15, and the input end thereof is connected with the fifth port 005. One end of the electric drive assembly 16 is connected with the power assembly 15, and the other end thereof is connected with the twelfth port 012.

[0079] The warm air circuit 4 at least includes a warm air water pump 17, a condenser 18 (for example, a water-cooled condenser) and a warm air core 7 in the air conditioning circuit. The output end of the warm air water pump 17 is connected with the condenser 18, and the input end thereof is connected with the seventh port 007. The output end of the condenser 18 is connected with the input end of the second heat exchange channel 72, and the output end of the second heat exchange channel 72 is connected with the sixth port 006.

[0080] Specifically, although no water pump is arranged in the battery circuit 2, the fourteen-way valve 5 can realize the conduction of the liquid circuit with other circuits to simplify the architecture of the thermal management system. The electric drive circuit 3 includes the electric drive water pump 14, the power assembly 15 and the electric drive assembly 16. The electric drive water pump 14 is used to provide circulating cooling liquid in the corresponding circuit. The circulating cooling liquid can be used to cool the power assembly 15 and the electric drive assembly 16 or utilize the waste heat thereof.

[0081] Similarly, the warm air circuit 4 includes the warm air water pump 17, the condenser 18 and the warm air core 7 in the air conditioning circuit. The warm air water pump 17 is also used to provide circulating cooling liquid in the corresponding circuit. In the refrigeration working condition, the circulating cooling liquid in the condenser 18 also flows into the second heat exchange channel 72 to exchange heat with the high-temperature and high-pressure gaseous refrigerant, thereby absorbing the heat thereof.

[0082] Referring to Figures 5-8 , in a preferred embodiment, the architecture of the thermal management system further includes a circulating water circuit 19, a heat dissipation circuit 20, a first auxiliary branch 21 and a second auxiliary branch 22.

[0083] The two ends of the circulating water circuit 19 are connected to the second port 002 and the ninth port 009, respectively; the two ends of the heat dissipation circuit 20 are connected to the fourth port 004 and the eleventh port 011, respectively; the two ends of the first auxiliary branch 21 are connected to the third port 003 and the tenth port 010, respectively; the two ends of the second auxiliary branch 22 are connected to the thirteenth port 013 and the fourteenth port 014, respectively; wherein, the first auxiliary branch 21 is connected to both ends of the fourth heat exchange channel 82.

[0084] Furthermore, the circulating water circuit 19 includes at least a circulating water pump 23, and the output end of the circulating water pump 23 is connected to the second port 002, and its input end is connected to the ninth port 009; while the heat dissipation circuit 20 includes at least a radiator 24.

[0085] The circulating water circuit 19 and the heat dissipation circuit 20, through a simple water pump and radiator architecture, can be connected to the aforementioned different circuits under the structure of the fourteen-way valve 5, to meet the heat dissipation needs of different circuits, and can also provide circulating coolant for the circuits, which not only meets the functional requirements, but also reduces the complexity of the architecture; it should be noted that, generally, the radiator 24 and the cooling fan work together to form a high-efficiency heat dissipation circuit.

[0086] Similarly, the first auxiliary branch 21 and the second auxiliary branch 22 are respectively connected to the corresponding port auxiliary circuits at both ends, and can cooperate with the aforementioned circuits to achieve the corresponding requirements. For example, the first auxiliary branch 21 is connected to both ends of the fourth heat exchange channel 82, so heat exchange can be carried out at the cooler 8 through the connection with the first auxiliary branch 21.

[0087] See Figures 1-15 In a preferred embodiment, the fourteen-way valve 5 has multiple operating states;

[0088] like Figure 1 As shown, in one of the working states, the first port 001 and the second port 002 are connected; the third port 003 and the fourth port 004 are connected; the fifth port 005 and the fourteenth port 014 are connected; the sixth port 006 and the seventh port 007 are connected; the eighth port 008 and the eleventh port 011 are connected; the ninth port 009 and the tenth port 010 are connected; and the twelfth port 012 and the thirteenth port 013 are connected.

[0089] The heating circuit 4 and the air conditioning circuit 1 exchange heat at the heating core 7. The electric drive circuit 3 and the second auxiliary branch 22 form a circulating liquid circuit. The battery circuit 2, the circulating water circuit 19, the heat dissipation circuit 20 and the first auxiliary branch 21 form a circulating liquid circuit and exchange heat at the cooler 7.

[0090] The above process is one of the working states of the thermal management system architecture, which is now referred to as the first working state. The interconnected circuits formed (excluding air conditioning circuit 1) include the following three: power battery 13 → radiator 24 → cooler 8 → circulating water pump 23 → power battery 13; electric drive components (power assembly 15 + electric drive assembly 16) → electric drive water pump 14 → electric drive components; heater water pump 17 → condenser 18 → heater core 7 → heater water pump 17. This working state is suitable for medium and low temperature environments, and the power battery 13 needs to be cooled by the radiator 24. At this time, the air conditioning circuit is in heat pump mode, using the radiator 24 to dissipate heat for the power battery 13. At the same time, the electric drive components store heat, which is released for use when needed.

[0091] The other working states are explained in detail below:

[0092] like Figure 2 As shown, in the second operating state, the first port 001 and the second port 002 are connected; the third port 003 and the sixth port 006 are connected; the fifth port 005 and the fourth port 004 are connected; the seventh port 007 and the eighth port 008 are connected; the ninth port 009 and the fourteenth port 014 are connected; the tenth port 010 and the eleventh port 011 are connected; the twelfth port 012 and the thirteenth port 013 are connected. Specifically, in this second operating state, all loops are connected and can be used for refrigerant charging, but there is no actual thermal management function.

[0093] like Figure 3 As shown, in the three working states, the first port 001 and the tenth port 010 are connected; the second port 002 and the third port 003 are connected; the fourth port 004 and the seventh port 007 are connected; the sixth port 006 and the fifth port 005 are connected; the ninth port 009 and the eighth port 008 are connected; the twelfth port 012 and the eleventh port 011 are connected; and the fourteenth port 014 and the thirteenth port 013 are connected.

[0094] Battery circuit 2, first auxiliary branch 21, and circulating water circuit 19 are connected to form a circulating liquid circuit; electric drive circuit 3, heat dissipation circuit 20 and heating air circuit 4 are connected to form a circulating liquid circuit. The two circulating liquid circuits can exchange heat with air conditioning circuit 1 at cooler 8 and heating air core 7 respectively.

[0095] In the third working state, the formed communication loop (except the air conditioning loop 1) includes the following two: the power battery 13→the circulating water pump 23→the cooler 8→the circulating water pump 23; the electric drive component→the radiator 24→the warm air water pump 17→the condenser 18→the warm air core 7→the electric drive water pump 14→the electric drive component. Specifically, the working state is suitable for high-temperature environment conditions, at this time, the air conditioning loop is in a refrigeration mode, and the cooling and temperature equalization of the power battery 13, the cooling of the electric drive component, and the cooling of the condenser 18 can be realized. At the same time, the condenser 18 can also be used for cooling the passenger compartment.

[0096] As shown in Figure 4 In the fourth working state, the first port 001 and the fourteenth port 014 are communicated; the second port 002 and the eleventh port 011 are communicated; the fourth port 004 and the third port 003 are communicated; the fifth port 005 and the eighth port 008 are communicated; the sixth port 006 and the seventh port 007 are communicated; the tenth port 010 and the ninth port 009 are communicated; the twelfth port 012 and the thirteenth port 013 are communicated.

[0097] The battery loop 2, the electric drive loop 3, and the second auxiliary branch 22 form a circulating liquid circuit; the warm air loop 4 forms a separate circulating liquid circuit; the two circulating liquid circuits can be respectively heat-exchanged with the air conditioning loop 1 at the cooler 8 and the warm air core 7; the first auxiliary branch 21, the circulating water loop 19, and the heat dissipation loop 20 are conducted to form a circulating liquid circuit.

[0098] In the fourth working state, the formed communication loop (except the air conditioning loop 1) includes the following three: the power battery 13→the electric drive water pump 14→the electric drive component→the power battery 13; the warm air water pump 17→the condenser 18→the warm air core 7; the circulating water pump 23→the radiator 24→the cooler 8→the circulating water pump 23. The working state is suitable for medium-low temperature environment conditions, and the electric drive component has insufficient waste heat (for example, only enough to heat the passenger compartment) or the passenger compartment has heating requirements. At this time, the air conditioning loop is in a heat pump mode, and the power battery 13 can be heated by using the waste heat of the electric drive component. At the same time, in the heat pump mode, the cooler 8 can also absorb the heat of the environment to heat the passenger compartment.

[0099] As shown in Figure 5 In the fifth working state, the first port 001 and the second port 002 are communicated; the third port 003 and the twelfth port 012 are communicated; the fourth port 004 and the fifth port 005 are communicated; the sixth port 006 and the ninth port 009 are communicated; the seventh port 007 and the eighth port 008 are communicated; the tenth port 010 and the eleventh port 011 are communicated; the fourteenth port 014 and the thirteenth port 013 are communicated.

[0100] The warm air circuit 4, the circulating water circuit 19, the battery circuit 2, and the electric drive circuit 3 form a circulating liquid circuit; the first auxiliary branch 21 and the heat dissipation circuit 20 form a circulating liquid circuit; the two circulating liquid circuits can exchange heat with the air conditioning circuit 1 at the cooler 8 and the warm air core 7 respectively.

[0101] In the fifth working state, the formed communication circuit (except the air conditioning circuit 1) includes the following two: the power battery 13→the warm air water pump 17→the condenser 18→the warm air core 7→the circulating water pump 23→the power battery 13; the electric drive component→the cooler 8→the radiator 24→the electric drive water pump 14→the electric drive component; the working state is suitable for a low-temperature environment, and the electric drive component has more waste heat (for example, enough to heat the power battery 13 and the passenger cabin) or both the power battery 13 and the passenger cabin have heating requirements, at this time, the air conditioning circuit is in a heat pump mode, heat is absorbed from the environment and the electric drive component through circuit heat exchange, and then the power battery 13 and the passenger cabin are heated.

[0102] As shown in FIG. 1, Figure 6 In the sixth working state, the first port 001 and the fourteenth port 014 are communicated; the second port 002 and the third port 003 are communicated; the fourth port 004 and the thirteenth port 013 are communicated; the fifth port 005 and the sixth port 006 are communicated; the seventh port 007 and the tenth port 010 are communicated; the eighth port 008 and the ninth port 009 are communicated; the twelfth port 012 and the eleventh port 011 are communicated;

[0103] The warm air circuit 4, the circulating water circuit 19, the battery circuit 2, the electric drive circuit 3, the first auxiliary branch 21, the heat dissipation circuit 20, and the second auxiliary branch 22 form a circulating liquid circuit; in the sixth working state, the formed communication circuit (except the air conditioning circuit 1) includes the following one: the power battery 13→the circulating water pump 23→the cooler 8→the warm air water pump 17→the condenser 18→the warm air core 7→the electric drive water pump 14→the electric drive component→the radiator 24→the power battery 13; the working state is suitable for a medium-temperature environment driving condition, at this time, the air conditioning circuit does not work, and the radiator 24 can be used to dissipate heat for the power battery 13 and the electric drive component.

[0104] As shown in FIG. 1, Figure 7 In the seventh working state, the first port 001 and the sixth port 006 are communicated; the second port 002 and the third port 003 are communicated; the fourth port 004 and the fifth port 005 are communicated; the seventh port 007 and the eighth port 008 are communicated; the ninth port 009 and the twelfth port 012 are communicated; the tenth port 010 and the eleventh port 011 are communicated; the thirteenth port 013 and the fourteenth port 014 are communicated; the working state is the same as the fourth working state described above, so it is generally not used, and it will not be described here.

[0105] As shown in FIG. 1, Figure 8As shown, in the eighth working state, the first port 001 and the fourteenth port 014 are connected; the second port 002 and the seventh port 007 are connected; the fourth port 004 and the third port 003 are connected; the sixth port 006 and the fifth port 005 are connected; the ninth port 009 and the eighth port 008 are connected; the tenth port 010 and the thirteenth port 013 are connected; the twelfth port 012 and the eleventh port 011 are connected. This working state is the same as the fifth working state mentioned above, so it is generally not used and will not be described in detail here.

[0106] like Figure 9 As shown, in the ninth working state, the first port 001 and the second port 002 are connected; the third port 003 and the eighth port 008 are connected; the fourth port 004 and the fifth port 005 are connected; the sixth port 006 and the seventh port 007 are connected; the ninth port 009 and the tenth port 010 are connected; the eleventh port 011 and the fourteenth port 014 are connected; and the twelfth port 012 and the thirteenth port 013 are connected.

[0107] Battery circuit 2, first auxiliary branch 21, and circulating water circuit 19 form a circulating liquid circuit; heating circuit 4 forms a separate circulating liquid circuit; the above two circulating liquid circuits can exchange heat with air conditioning circuit 1 at cooler 8 and heating core 7 respectively; electric drive circuit 3, second auxiliary branch 22, and heat dissipation circuit 20 form a circulating liquid circuit.

[0108] In the ninth operating state, the interconnected circuit (excluding air conditioning circuit 1) includes the following three: power battery 13 → cooler 8 → circulating water pump 23 → power battery 13; electric drive component → radiator 24 → electric drive water pump 14 → electric drive component; heater water pump 17 → condenser 18 → heater core 7. This operating state is suitable for low-temperature environments, where the power battery 13 is in fast charging mode or high-load discharge mode (e.g., high-speed operation or climbing). At this time, the air conditioning circuit is in heat pump mode, and the power battery 13 can dissipate heat through heat exchange at the cooler 8, while the electric drive component dissipates heat through the radiator 24. At the same time, in heat pump mode, the cooler 8 can also absorb heat from the power battery 13 to heat the passenger compartment.

[0109] like Figure 10 As shown, in the tenth working state, the first port 001 and the twelfth port 012 are connected; the second port 002 and the third port 003 are connected; the fourth port 004 and the ninth port 009 are connected; the sixth port 006 and the fifth port 005 are connected; the seventh port 007 and the eighth port 008 are connected; the tenth port 010 and the eleventh port 011 are connected; and the fourteenth port 014 and the thirteenth port 013 are connected.

[0110] Battery circuit 2, heating circuit 4, and electric drive circuit 3 form a circulating liquid circuit; circulating water circuit 19, first auxiliary branch circuit 21, and heat dissipation circuit 20 form a circulating liquid circuit; the above two circulating liquid circuits can exchange heat with air conditioning circuit 1 at cooler 8 and heating core 7 respectively.

[0111] In the tenth operating state, the interconnected circuits formed (excluding air conditioning circuit 1) include the following two: power battery 13 → heater water pump 17 → condenser 18 → heater core 7 → electric drive water pump 14 → electric drive components → power battery 13; circulating water pump 23 → cooler 8 → radiator 24 → circulating water pump 23. This operating state is suitable for medium and low temperature environments, and the electric drive components generate a lot of heat, while the passenger cabin requires a low water temperature (for example, the electric drive water temperature can meet the passenger cabin's water temperature requirements). At this time, the air conditioning circuit is in heat pump mode, heating the power battery 13 and the passenger cabin by absorbing heat from the environment and the waste heat from the electric drive components.

[0112] like Figure 11 As shown, in the eleventh working state, the first port 001 and the fourteenth port 014 are connected; the second port 002 and the thirteenth port 013 are connected; the third port 003 and the fourth port 004 are connected; the fifth port 005 and the tenth port 010 are connected; the sixth port 006 and the seventh port 007 are connected; the eighth port 008 and the ninth port 009 are connected; and the eleventh port 011 and the twelfth port 012 are connected.

[0113] The heating circuit 4 forms a separate circulating fluid circuit; the electric drive circuit 3, the heat dissipation circuit 20, and the first auxiliary branch 21 form a circulating fluid circuit; the above two circulating fluid circuits can exchange heat with the air conditioning circuit 1 at the cooler 8 and the heating core 7 respectively; the battery circuit 2, the circulating water circuit 19, and the second auxiliary branch 22 form a circulating fluid circuit.

[0114] In the eleventh operating state, the interconnected circuits formed (excluding air conditioning circuit 1) include the following three: power battery 13 → circulating water pump 23 → power battery 13; electric drive component → radiator 24 → cooler 8 → electric drive water pump 14 → electric drive component; heater water pump 17 → condenser 18 → heater core 7 → heater water pump 17. This operating state is suitable for medium and low temperature environments. The electric drive component has a lot of waste heat, and the passenger cabin has a heating requirement, while the power battery 13 does not have a heating requirement. At this time, the waste heat generated by the electric drive component can be used to achieve uniform temperature of the power battery 13, and combined with the heat exchange at the cooler 8, the passenger cabin can be heated.

[0115] like Figure 12As shown, in the twelfth working state, the first port 001 and the second port 002 are connected; the third port 003 and the fourteenth port 014 are connected; the fourth port 004 and the fifth port 005 are connected; the sixth port 006 and the eleventh port 011 are connected; the seventh port 007 and the eighth port 008 are connected; the ninth port 009 and the tenth port 010 are connected; the twelfth port 012 and the thirteenth port 013 are connected. This working state is the same as the fifth working state mentioned above, so it is generally not used and will not be described in detail here.

[0116] like Figure 13 As shown, in the thirteenth working state, the first port 001 and the fourth port 004 are connected; the second port 002 and the third port 003 are connected; the fifth port 005 and the sixth port 006 are connected; the seventh port 007 and the twelfth port 012 are connected; the ninth port 009 and the eighth port 008 are connected; the tenth port 010 and the eleventh port 011 are connected; the thirteenth port 013 and the fourteenth port 014 are connected. This working state is the same as the sixth working state mentioned above, so it is generally not used and will not be described in detail here.

[0117] like Figure 14 As shown, in the fourteenth working state, the first port 001 and the fourteenth port 014 are connected; the second port 002 and the fifth port 005 are connected; the third port 003 and the fourth port 004 are connected; the sixth port 006 and the seventh port 007 are connected; the eighth port 008 and the thirteenth port 013 are connected; the ninth port 009 and the tenth port 010 are connected; the eleventh port 011 and the twelfth port 012 are connected. Specifically, in the fourteenth working state, since the power battery is isolated in a separate circuit and cannot be connected to other circuits, energy cannot flow. Therefore, this mode is not used under normal circumstances.

[0118] Example 2

[0119] First, based on the above, it is known that the thermal management system has multiple loops. In Embodiment 1 of this application, multiple fourteen-way valves 5 are used to connect multiple loops, thereby forming multiple comprehensive loops to meet people's functional requirements for the thermal management system. Below, in conjunction with the above description of the architecture and principle of the thermal management system, the control method in its practical application will be introduced.

[0120] like Figure 16 As shown, based on the thermal management system architecture based on the fourteen-way valve shown in Embodiment 1, this application proposes a control method for a thermal management system architecture based on the fourteen-way valve, including the following steps:

[0121] S1, acquire a first temperature regulation requirement of a thermal management system of a target vehicle and a plurality of working condition parameters of the current thermal management system; the first temperature regulation requirement at least includes cooling and heating requirements of an electric drive module, a battery module and a passenger cabin; and the plurality of working condition parameters at least includes driving conditions, environmental conditions, battery operation conditions and electric drive operation conditions;

[0122] Due to the first temperature regulation requirements of the target vehicle power battery 13, the electric drive components and the passenger cabin, on the one hand, the thermal management control system is monitored and collected, and on the other hand, the user can also select to start according to the own requirements, so after obtaining the first temperature regulation requirement, the optimal target working mode under the condition of considering multiple temperature control requirements can be selected in combination with the plurality of working condition parameters.

[0123] S2, based on the first temperature regulation requirement and the plurality of working condition parameters of the current thermal management system, confirming a target working mode of the thermal management system;

[0124] Specifically, in the embodiment of the present application, the working mode includes fourteen kinds, and the final target working mode can be obtained in combination with the first temperature regulation requirement and the plurality of working condition parameters.

[0125] It should be noted that in combination with the above judgment and collection actions, the method can be executed by the vehicle, or can be executed by the vehicle domain controller (VDC, Vehicle Domain Controller), the battery management system (BMS, Battery Management System) and the instrument cooperatively.

[0126] It can be known from the foregoing introduction of the fourteen-way valve working state that there are different working conditions corresponding to each working state, so finally eight working modes can be obtained, and each used working condition state becomes a working mode of a thermal management system architecture.

[0127] Next, the working modes corresponding to the third working state, the ninth working state and the eleventh working state are selected for example, and other working modes are not described in detail.

[0128] (1) If the current environmental condition is a high-temperature condition, the electric drive module, the battery module and the passenger cabin all have cooling requirements; at this time, the working mode corresponding to the third working state of the fourteen-way valve 5 can be selected, which is the current target working mode, and can realize cooling and temperature equalization of the power battery 13, cooling of the electric drive components, and cooling of the passenger cabin through the condenser 18.

[0129] (2) If the current environmental condition is a low-temperature condition, and the power battery 13 in the battery module is in a fast-charging condition or is in a high-load discharging condition (or, the corresponding driving condition is high-speed driving or climbing), at this time the air conditioning circuit is in a heating mode in a heat pump mode, the ninth working state of the fourteen-way valve 5 can be selected, and the working mode corresponding to the ninth working state is the target working mode at the moment. The power battery 13 can dissipate heat through heat exchange at the cooler 8, and the electric drive component dissipates heat through the radiator 24. At the same time, in the heat pump mode, the cooler 8 can also absorb the heat of the power battery 13 to heat the passenger compartment.

[0130] (3) If the current environmental condition is a low-temperature condition, and the power battery 13 in the battery module is in a fast-charging condition or is in a high-load discharging condition (or, the corresponding driving condition is high-speed driving or climbing), at this time the air conditioning circuit is in a heating mode in a heat pump mode, the ninth working state of the fourteen-way valve 5 can be selected, and the working mode corresponding to the ninth working state is the target working mode at the moment. The power battery 13 can dissipate heat through heat exchange at the cooler 8, and the electric drive component dissipates heat through the radiator 24. At the same time, in the heat pump mode, the cooler 8 can also absorb the heat of the power battery 13 to heat the passenger compartment.

[0131] S3、According to the port connection condition of the fourteen-way valve 5 in the target working mode, the valve core in the fourteen-way valve 5 is controlled to rotate by a corresponding angle to realize the connection of the corresponding ports.

[0132] After the corresponding working mode is obtained, the valve core of the fourteen-way valve 5 can be controlled to rotate by a corresponding angle according to the port connection condition in each mode, so that the corresponding ports are connected.

[0133] In a preferred embodiment, the method further includes the following step one:

[0134] Step one, determining whether the air conditioning circuit 1 needs to be filled with refrigerant, if yes, selecting a refrigerant filling mode in the thermal management system, and controlling the valve core in the fourteen-way valve 5 to rotate according to the port connection condition corresponding to the refrigerant filling mode.

[0135] The refrigerant filling mode corresponds to the second working state of the fourteen-way valve 5. When the fourteen-way valve 5 is in the second working state, all the circuits are connected, which can be used for filling refrigerant. Therefore, in actual application, if it is determined that the air conditioning circuit 1 needs to be filled with refrigerant, the refrigerant filling mode can be selected.

[0136] It needs to be explained that in the embodiments of the present application, the high-temperature environmental condition, the low-temperature environmental condition, the medium-temperature environmental condition, the low-temperature environmental condition, and the extremely low-temperature environmental condition are as follows.

[0137] Low-temperature condition: real-time environmental temperature T <-15℃ (the air heat source heat pump cannot work, and the battery and the passenger compartment need to be heated); medium-low temperature condition: real-time environmental temperatureT -15℃~0℃ (air heat source heat pump can work, battery needs to be heated); medium temperature working condition: real-time ambient temperature T 0℃~30℃ (the radiator can be used to cool the battery); high temperature working condition: real-time ambient temperature T >30℃ (both the battery and the electric drive need to be cooled), but the above values are for illustration and do not limit the values, which can be adjusted according to the actual situation.

[0138] The above description is only the preferred embodiment of the present application and the explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A fourteen-way valve based thermal management system architecture, characterized by, The heat management system architecture at least includes: an air conditioning circuit (1), a battery circuit (2), an electric drive circuit (3) and a heater circuit (4); The air conditioning circuit (1), the battery circuit (2), the electric drive circuit (3) and the heater circuit (4) are connected to each other through a fourteen-way valve (5); wherein the air conditioning circuit (1) includes at least two heat exchange components; The fourteen-way valve (5) has fourteen valve ports, and each two valve ports of the fourteen-way valve (5) are connected to a circuit; the fourteen-way valve (5) is internally provided with a rotatable valve core, and the valve core internally forms a plurality of independently arranged liquid path channels; Under the rotation of the valve core, different liquid path channels are connected to different two valve ports, the battery circuit (2), the electric drive circuit (3) and the heater circuit (4) can be conducted according to the target working mode, and heat exchange is carried out at the heat exchange component and the air conditioning circuit (1) to control the energy flow of the heat management system; The fourteen valve ports of the fourteen-way valve (5) form first to fourteenth ports (001) to (014) in sequence; Among them, the battery circuit (2) is connected with the first port (001) and the eighth port (008) respectively; the electric drive circuit (3) is connected with the fifth port (005) and the twelfth port (012) respectively; the heater circuit (4) is connected with the sixth port (006) and the seventh port (007) respectively; The two heat exchange components in the air conditioning circuit are a heater core (7) and a cooler (8), and in the air conditioning circuit, a compressor (6), the heater core (7), the cooler (8) and a gas-liquid separator (9) are sequentially connected to form a circulating flow path; The heater core (7) has a first heat exchange channel (71) and a second heat exchange channel (72); the cooler (8) has a third heat exchange channel (81) and a fourth heat exchange channel (82); The output end of the compressor (6) is connected with one end of the first heat exchange channel (71), the other end of the first heat exchange channel (71) is connected with the third heat exchange channel (81), and the other end of the third heat exchange channel (81) is connected with the input end of the gas-liquid separator (9); The heat management system architecture further includes: a circulating water circuit (19), a heat dissipation circuit (20), a first auxiliary branch (21) and a second auxiliary branch (22); The two ends of the circulating water circuit (19) are connected with the second port (002) and the ninth port (009) respectively; the two ends of the heat dissipation circuit (20) are connected with the fourth port (004) and the eleventh port (011) respectively; the two ends of the first auxiliary branch (21) are connected with the third port (003) and the tenth port (010) respectively; the two ends of the second auxiliary branch (22) are connected with the thirteenth port (013) and the fourteenth port (014) respectively; wherein the first auxiliary branch (21) is connected with the two ends of the fourth heat exchange channel (82).

2. The fourteen-way valve based thermal management system architecture of claim 1, wherein, The air conditioning circuit further comprises a first branch circuit connected in parallel on both sides of the cooler (8); A first electronic expansion valve (10) is arranged between the heater core (7) and the cooler (8), one end of the first branch circuit is connected between the first electronic expansion valve (10) and the heater core (7), and the other end is connected with the input end of the gas-liquid separator (9); A second electronic expansion valve (11) and an evaporator (12) are arranged in sequence on the first branch circuit.

3. The fourteen-way valve based thermal management system architecture of claim 2, wherein, The battery circuit (2) at least comprises a power battery (13); The electric drive circuit (3) at least comprises an electric drive water pump (14), a power assembly (15) and an electric drive assembly (16); wherein the output end of the electric drive water pump (14) is connected with the power assembly (15), and the input end is connected with the fifth port (005); one end of the electric drive assembly (16) is connected with the power assembly (15), and the other end is connected with the twelfth port (012); The heater circuit (4) at least comprises a heater water pump (17), a condenser (18) and the heater core (7) in the air conditioning circuit; wherein the output end of the heater water pump (17) is connected with the condenser (18), and the input end is connected with the seventh port (007); the output end of the condenser (18) is connected with the input end of the second heat exchange channel (72), and the output end of the second heat exchange channel (72) is connected with the sixth port (006).

4. The fourteen-way valve-based thermal management system architecture of claim 3, wherein, The circulating water circuit (19) at least comprises a circulating water pump (23); The output end of the circulating water pump (23) is connected with the second port (002), and the input end is connected with the ninth port (009); The heat dissipation circuit (20) at least comprises a radiator (24).

5. The fourteen-way valve based thermal management system architecture of claim 4, wherein, The fourteen-way valve (5) has multiple working states; In one of the working states, the first port (001) and the second port (002) are connected; the third port (003) and the fourth port (004) are connected; the fifth port (005) and the fourteenth port (014) are connected; the sixth port (006) and the seventh port (007) are connected; the eighth port (008) and the eleventh port (011) are connected; the ninth port (009) and the tenth port (010) are connected; the twelfth port (012) and the thirteenth port (013) are connected; The heater circuit (4) and the air conditioning circuit (1) exchange heat at the heater core (7), the electric drive circuit (3) and the second auxiliary branch (22) form a circulating liquid circuit, the battery circuit (2), the circulating water circuit (19), the heat dissipation circuit (20) and the first auxiliary branch (21) form a circulating liquid circuit, and exchange heat at the cooler (8).

6. A control method of a fourteen-way valve-based thermal management system architecture, characterized in that, The control method comprises the following steps: obtaining the first temperature regulation requirement of the thermal management system of the target vehicle and the current working condition parameters of the thermal management system; the first temperature regulation requirement at least comprises the cooling and heating requirements of the electric drive module, the battery module and the passenger cabin; the working condition parameters at least comprise the driving condition, the environmental condition, the battery operation condition and the electric drive operation condition; confirming the target working mode of the thermal management system based on the first temperature regulation requirement and the current working condition parameters of the thermal management system; controlling the rotation of the valve core in the fourteen-way valve (5) by a corresponding angle according to the port connection condition of the fourteen-way valve (5) in the target working mode, so as to realize the corresponding port connection.

7. The control method of a fourteen-valve based thermal management system architecture according to claim 6, characterized in that, The control method further comprises the following steps: judging whether the air conditioning circuit (1) needs to be filled with refrigerant, if yes, selecting the refrigerant filling mode in the thermal management system, and controlling the rotation of the valve core in the fourteen-way valve (5) according to the port connection condition corresponding to the refrigerant filling mode.

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