Distributed air conditioning assembly, heat pump air conditioning system, vehicle and control method

Abstract

The present application relates to the technical field of automobile, especially to a distributed air conditioning assembly, comprising an air intake module, an air conditioner box module and an air distribution module. The first air outlet on the air intake shell is communicated with the second air inlet on the air conditioner box shell, the second air outlet on the air conditioner box shell is communicated with the third air inlet on the air distribution shell, and the air distribution shell is further provided with at least one third air outlet. The distributed air conditioning assembly is provided with two groups, and each group comprises one air conditioner box module and two air distribution modules. Or one distributed air conditioning assembly comprises two air distribution modules and two air conditioner box modules, the first air outlet of the air intake module is provided with two, the two first air outlets are respectively communicated with the second air inlets of the two air conditioner box modules, and the two air conditioner box modules are respectively communicated with the two air distribution modules. The present application further provides a heat pump air conditioning system, a vehicle and a control method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to a distributed air conditioning assembly, a heat pump air conditioning system, a vehicle and a control method. BACKGROUND

[0002] With the development of automobile electrification, higher requirements are continuously put forward for vehicle energy consumption, comfort and seating space. It is relatively difficult to achieve zoned regulation of temperature and humidity, air volume and mode, and even special functions such as one seat cooling and another seat heating which require a large temperature difference between different zones. The existing air conditioning assembly cannot achieve the above functions, which hinders the improvement of vehicle comfort.

[0003] Therefore, there is an urgent need for a distributed air conditioning assembly, a heat pump air conditioning system, a vehicle and a control method to solve the above problems. SUMMARY

[0004] An object of the present application is to provide a distributed air conditioning assembly capable of achieving zoned regulation of temperature and humidity, air volume and mode.

[0005] To achieve this object, the present application adopts the following technical solutions:

[0006] A distributed air conditioning assembly is provided, comprising:

[0007] An air inlet module, comprising an air inlet shell, at least one first air inlet and one first air outlet are formed on the air inlet shell;

[0008] An air conditioning box module, comprising an air conditioning box shell, a second air inlet and a second air outlet are formed on the air conditioning box shell, and the second air inlet is communicated with the first air outlet;

[0009] An air distribution module, comprising an air distribution shell, a third air inlet and at least one third air outlet are formed on the air distribution shell, and the third air inlet is communicated with the second air outlet;

[0010] The distributed air conditioning assembly is provided with two groups, and each group of the distributed air conditioning assembly comprises one air conditioning box module and two air distribution modules, and the second air outlet of the air conditioning box module is communicated with the third air inlets of the two air distribution modules;

[0011] Or the distributed air conditioning assembly comprises two air distribution modules and two air conditioning box modules, and the first air outlet of the air inlet module is provided with two, and the two first air outlets are respectively communicated with the second air inlets of the two air conditioning box modules, and the second air outlets of the two air conditioning box modules are respectively communicated with the third air inlets of the two air distribution modules.

[0012] As a preferred scheme of the distributed air conditioning assembly, the first air inlet is provided with two, which are used for introducing fresh air and circulating air respectively, the air inlet module further comprises an air inlet damper and a filter, the air inlet damper is used for adjusting the air inlet proportion of the two first air inlets, and the filter is arranged in the air inlet shell.

[0013] As a preferred scheme of the distributed air conditioning assembly, the air conditioning box module further comprises a blower, an evaporator and a condenser arranged in the air conditioning box shell.

[0014] As a preferred scheme of the distributed air conditioning assembly, the air conditioning box module further comprises an electric heater arranged in the air conditioning box shell.

[0015] As a preferred scheme of the distributed air conditioning assembly, the air distribution module further comprises a face blowing damper, a foot blowing damper and a defrosting damper, the third air outlet is provided with three, and the three third air outlets are a face blowing air outlet, a foot blowing air outlet and a defrosting air outlet, the face blowing damper is arranged upstream of the face blowing air outlet, the foot blowing damper is arranged upstream of the foot blowing air outlet, and the defrosting damper is arranged upstream of the defrosting air outlet.

[0016] Another purpose of the present application is to provide a heat pump air conditioning system capable of realizing zoned adjustment of temperature and humidity, air volume and mode.

[0017] To achieve the above purpose, the present application adopts the following technical scheme:

[0018] The present application provides a heat pump air conditioning system, comprising the above distributed air conditioning assembly, the heat pump air conditioning system further comprises a front-end cooling module, a compression separation module, a cooling liquid cooling module and a valve group module, the front-end cooling module comprises an outside heat exchanger and a fan, the fan is used for strengthening the airflow velocity at the outside heat exchanger, the compression separation module comprises a gas-liquid separator and a compressor connected in communication, the cooling liquid cooling module is used for cooling the battery pack or the motor of the vehicle, and the valve group module is used for controlling the flow of the coolant in the pipeline connected between the front-end cooling module, the compression separation module, the air conditioning box module and the cooling liquid cooling module.

[0019] As a preferred scheme of the heat pump air conditioning system, the valve group module comprises a heating expansion valve, a heating three-way valve, an evaporation pressure regulating valve, a heating flow control valve, a refrigeration expansion valve and a reversing three-way valve, the heating expansion valve is arranged on a pipeline connecting the first node and the B end of the vehicle external heat exchanger, the first node is connected to the A end of the evaporator of at least two air conditioning box modules through at least two first branches, the refrigeration expansion valve is arranged on each first branch, the B end of the evaporator of at least two air conditioning box modules is connected to the second node, the third node is connected to the B end of the condenser of at least two air conditioning box modules, the fourth node is connected to the A end of the condenser of at least two air conditioning box modules through at least two second branches, the heating flow control valve is arranged on each second branch, the a end, the b end and the c end of the reversing three-way valve are connected to the A end of the gas-liquid separator, the fourth node and the A end of the vehicle external heat exchanger respectively, the evaporation pressure regulating valve is arranged on a pipeline connecting the second node and the A end of the gas-liquid separator, the a end, the b end and the c end of the heating three-way valve are connected to the first node, the second node and the third node respectively, the B end of the gas-liquid separator is connected to the A end of the compressor, the B end of the compressor is connected to the fourth node, the cooling liquid cooling module comprises a cooling liquid cooler and a liquid cooling expansion valve, one end of the cooling liquid cooler is connected to the A end of the gas-liquid separator, and the other end is connected to the first node through the liquid cooling expansion valve.

[0020] Still another object of the present application is to provide a vehicle capable of realizing zoned adjustment of temperature, humidity, air volume and mode.

[0021] To achieve the above object, the present application adopts the following technical scheme:

[0022] The present application provides a vehicle comprising the above heat pump air conditioning system, wherein the vehicle comprises a front compartment, a passenger compartment and a tail compartment.

[0023] As a preferred scheme of the vehicle, the distributed air conditioning assembly is arranged at the front of the vehicle, the air inlet module and the air conditioning box module are arranged in the front compartment, the air distribution module is arranged at the front of the passenger compartment, and the third air outlets of the two air distribution modules correspond to the main driver seat and the deputy driver seat respectively.

[0024] As a preferred scheme of the vehicle, two sets of distributed air conditioning assemblies are arranged, one set of the distributed air conditioning assembly is arranged at the rear of the vehicle, the air inlet module, the air conditioning box module and the air distribution module are arranged in the tail compartment, and the third air outlets of the two air distribution modules correspond to the left seat and the right seat of the rear seats respectively.

[0025] Still another object of the present application is to provide a control method capable of realizing zoned adjustment of temperature, humidity, air volume and mode.

[0026] To achieve the above object, the present application adopts the following technical solution:

[0027] The control method is applied to the heat pump air conditioning system, and comprises an overall refrigeration mode, a normal heating mode, a maximum heating mode, a refrigeration and dehumidification dual-temperature control mode, a heating and dehumidification dual-temperature control mode, a zoned overall refrigeration and heating mode, a zoned overall refrigeration and heating mode, a refrigeration cycle ice melting mode and a hot gas ice melting mode. The overall refrigeration mode is used for cooling the passenger compartment, the normal heating mode and the maximum heating mode are both used for heating the passenger compartment, the refrigeration and dehumidification dual-temperature control mode is used for cooling and dehumidifying the passenger compartment, the heating and dehumidification dual-temperature control mode is used for heating and dehumidifying the passenger compartment, the zoned overall refrigeration and heating mode and the zoned overall refrigeration and heating mode are both used for heating part of the passenger compartment and cooling the remaining part, and the refrigeration cycle ice melting mode and the hot gas ice melting mode are both used for melting ice on the external heat exchanger.

[0028] As a preferred solution of the control method, the overall refrigeration mode comprises the following steps: closing all the heating flow control valves, adjusting the heating expansion valve and the evaporative pressure regulating valve to be in the fully open state, adjusting all the refrigeration expansion valves to be in the intermediate opening degree, adjusting the heating three-way valve to be in the state of connecting the b end and the c end, and adjusting the reversing three-way valve to be in the state of connecting the b end and the c end.

[0029] As a preferred solution of the control method, the normal heating mode comprises the following steps: opening all the heating flow control valves to the maximum opening degree, adjusting the heating expansion valve to be in the regulating position, closing the evaporative pressure regulating valve and all the refrigeration expansion valves, adjusting the heating three-way valve to be in the state of connecting the a end and the c end, adjusting the reversing three-way valve to be in the state of connecting the a end and the c end, and opening the liquid cooling expansion valve to the intermediate opening degree.

[0030] As a preferred solution of the control method, the maximum heating mode comprises the following steps: opening all the refrigeration expansion valves to the maximum opening degree, opening all the heating flow control valves to the maximum opening degree, adjusting the heating expansion valve to be in the regulating position, closing the evaporative pressure regulating valve, adjusting the heating three-way valve to be in the state of connecting the b end and the c end, adjusting the reversing three-way valve to be in the state of connecting the b end and the c end, opening the liquid cooling expansion valve to the intermediate opening degree, opening the electric heater of at least two air conditioning box modules, and adjusting at least two air distribution modules to be in the foot blowing or defrosting mode.

[0031] As a preferred solution of the control method, the refrigeration dehumidification dual-temperature control mode comprises: opening all the heating flow control valves and all the refrigeration expansion valves to an intermediate opening degree, opening the heating expansion valve and the evaporating pressure regulating valve to a full opening position, adjusting the a end and the c end of the heating three-way valve to be communicated, adjusting the b end and the c end of the reversing three-way valve to be communicated, and opening the liquid cooling expansion valve to an intermediate opening degree.

[0032] As a preferred solution of the control method, the refrigeration dehumidification dual-temperature control mode comprises: opening all the heating flow control valves and all the refrigeration expansion valves to an intermediate opening degree, opening the heating expansion valve and the evaporating pressure regulating valve to a full opening position, adjusting the a end and the c end of the heating three-way valve to be communicated, adjusting the b end and the c end of the reversing three-way valve to be communicated, and opening the liquid cooling expansion valve to an intermediate opening degree.

[0033] As a preferred solution of the control method, the refrigeration dehumidification dual-temperature control mode comprises: opening all the heating flow control valves and all the refrigeration expansion valves to an intermediate opening degree, opening the heating expansion valve and the evaporating pressure regulating valve to a full opening position, adjusting the a end and the c end of the heating three-way valve to be communicated, adjusting the b end and the c end of the reversing three-way valve to be communicated, and opening the liquid cooling expansion valve to an intermediate opening degree.

[0034] As a preferred solution of the control method, the refrigeration dehumidification dual-temperature control mode comprises: opening all the heating flow control valves and all the refrigeration expansion valves to an intermediate opening degree, opening the heating expansion valve and the evaporating pressure regulating valve to a full opening position, adjusting the a end and the c end of the heating three-way valve to be communicated, adjusting the b end and the c end of the reversing three-way valve to be communicated, and opening the liquid cooling expansion valve to an intermediate opening degree.

[0035] As a preferred solution of the control method, the refrigeration dehumidification dual-temperature control mode comprises: opening all the heating flow control valves and all the refrigeration expansion valves to an intermediate opening degree, opening the heating expansion valve and the evaporating pressure regulating valve to a full opening position, adjusting the a end and the c end of the heating three-way valve to be communicated, adjusting the b end and the c end of the reversing three-way valve to be communicated, and opening the liquid cooling expansion valve to an intermediate opening degree.

[0036] As a preferred solution of the control method, the hot gas defrosting mode comprises: opening all the heating flow control valves to the maximum opening degree, the heating expansion valve being in the regulating position, closing the evaporating pressure regulating valve, all the refrigeration expansion valves and the liquid cooling expansion valve, the heating three-way valve being adjusted to connect the a end and the c end, the reversing three-way valve being adjusted to connect the a end and the c end, and the fan being turned off.

[0037] Advantages of the present application:

[0038] The present application provides a kind of distributed air conditioning assembly, including air intake module, air conditioner box module and air distribution module.Therein, air intake module includes air intake shell, at least one first air inlet and one first air outlet are opened on air intake shell.Air conditioner box module includes air conditioner box shell, second air inlet and second air outlet are opened on air conditioner box shell, and second air inlet is communicated with first air outlet.Air distribution module includes air distribution shell, third air inlet and at least one third air outlet are opened on air distribution shell, and third air inlet is communicated with second air outlet.In order to guarantee including at least two air conditioner box modules and two air distribution modules, to realize the zoned regulation of temperature and humidity, air volume, mode, distributed air conditioning assembly is provided with two groups, and each group of distributed air conditioning assembly includes one air conditioner box module and two air distribution modules, and the second air outlet of air conditioner box module is communicated with the third air inlet of two air distribution modules.Or one distributed air conditioning assembly directly includes two air distribution modules and two air conditioner box modules, and the first air outlet of air intake module is provided with two, and two first air outlets are communicated with the second air inlet of two air conditioner box modules respectively, and the second air outlet of two air conditioner box modules is communicated with the third air inlet of two air distribution modules respectively.The above two setting modes can realize the zoned regulation of temperature and humidity, air volume, mode.

[0039] The present application also provides a kind of heat pump air conditioning system, including the above-mentioned distributed air conditioning assembly, which can realize the zoned regulation of temperature and humidity, air volume, mode.

[0040] The present application also provides a kind of vehicle, including the above-mentioned heat pump air conditioning system, and the vehicle includes front cabin, passenger cabin and tail cabin.The vehicle can realize the zoned regulation of temperature and humidity, air volume, mode.

[0041] The application also provides a control method applied to the heat pump air conditioning system, the control method comprising a whole refrigeration mode, a normal heating mode, a maximum heating mode, a refrigeration and dehumidification dual-temperature control mode, a heating and dehumidification dual-temperature control mode, a zoned whole refrigeration and heating refrigeration mode, a zoned whole refrigeration and heating heating mode, a refrigeration cycle ice melting mode and a hot gas ice melting mode, the whole refrigeration mode being used for cooling the passenger compartment, the normal heating mode and the maximum heating mode both being used for heating the passenger compartment, the refrigeration and dehumidification dual-temperature control mode being used for cooling and dehumidifying the passenger compartment, the heating and dehumidification dual-temperature control mode being used for heating and dehumidifying the passenger compartment, the zoned whole refrigeration and heating refrigeration mode and the zoned whole refrigeration and heating heating mode both being used for heating part of the passenger compartment and cooling the rest of the passenger compartment, and the refrigeration cycle ice melting mode and the hot gas ice melting mode both being used for melting ice on the vehicle external heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 Fig. 1 is a partial structural schematic diagram of a distributed air conditioning assembly provided by an embodiment of the application;

[0043] Figure 2 Fig. 2 is a side view of a vehicle (the front part of which is provided with a distributed air conditioning assembly) provided by an embodiment of the application;

[0044] Figure 3 Fig. 3 is a top view of a vehicle (the front part of which is provided with a distributed air conditioning assembly) provided by an embodiment of the application;

[0045] Figure 4 Fig. 4 is a side view of a vehicle (the front part and the rear part of which are both provided with a distributed air conditioning assembly) provided by an embodiment of the application;

[0046] Figure 5 Fig. 5 is a top view of a vehicle (the front part and the rear part of which are both provided with a distributed air conditioning assembly) provided by an embodiment of the application;

[0047] Figure 6 Fig. 6 is a partial structural schematic diagram of a heat pump air conditioning system provided by an embodiment of the application;

[0048] Figure 7 Fig. 7 is a partial structural schematic diagram of the heat pump air conditioning system in a whole refrigeration mode provided by an embodiment of the application;

[0049] Figure 8 Fig. 8 is a partial structural schematic diagram of the heat pump air conditioning system in a normal heating mode provided by an embodiment of the application;

[0050] Figure 9 Fig. 9 is a partial structural schematic diagram of the heat pump air conditioning system in a maximum heating mode provided by an embodiment of the application;

[0051] Figure 10is a partial structure schematic diagram of a heat pump air conditioning system in a refrigeration and dehumidification dual-temperature control mode provided by an embodiment of the present application;

[0052] Figure 11 is a partial structure schematic diagram of a heat pump air conditioning system in a heating and dehumidification dual-temperature control mode provided by an embodiment of the present application;

[0053] Figure 12 is a partial structure schematic diagram of a heat pump air conditioning system in a partitioned full-cooling and full-heating refrigeration mode provided by an embodiment of the present application;

[0054] Figure 13 is a partial structure schematic diagram of a heat pump air conditioning system in a partitioned full-cooling and full-heating heating mode provided by an embodiment of the present application;

[0055] Figure 14 is a partial structure schematic diagram of a heat pump air conditioning system in a refrigeration cycle ice melting mode provided by an embodiment of the present application;

[0056] Figure 15 is a partial structure schematic diagram of a heat pump air conditioning system in a hot gas ice melting mode provided by an embodiment of the present application.

[0057] In the figure:

[0058] 1, air inlet module; 11, air inlet shell; 111, first air inlet; 112, first air outlet; 12, air inlet damper; 13, filter;

[0059] 2, air conditioning box module; 21, air conditioning box shell; 211, second air inlet; 212, second air outlet; 22, air blower; 23, evaporator; 24, condenser; 25, electric heater;

[0060] 3, air distribution module; 31, air distribution shell; 311, third air inlet; 312, third air outlet; 32, face blowing damper; 33, foot blowing damper; 34, defrosting damper;

[0061] 4, front end cooling module; 41, vehicle external heat exchanger; 42, fan;

[0062] 5, compression separation module; 51, gas-liquid separator; 52, compressor;

[0063] 6, cooling liquid cooling module; 61, cooling liquid cooler; 62, liquid cooling expansion valve;

[0064] 7, valve group module; 71, heating expansion valve; 72, heating three-way valve; 73, evaporating pressure regulating valve; 74, heating flow control valve; 75, refrigeration expansion valve; 76, reversing three-way valve;

[0065] 100, front compartment; 200, passenger compartment; 300, tail compartment; 400, firewall. Detailed Implementation

[0066] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings, not all of them.

[0067] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] like Figure 1 As shown, the distributed air conditioning assembly provided in this embodiment includes an air intake module 1, an air conditioning unit module 2, and an air distribution module 3. The air intake module 1 includes an air intake housing 11, which has at least one first air inlet 111 and one first air outlet 112. The air conditioning unit module 2 includes an air conditioning unit housing 21, which has a second air inlet 211 and a second air outlet 212, with the second air inlet 211 connected to the first air outlet 112. The air distribution module 3 includes an air distribution housing 31, which has a third air inlet 311 and at least one third air outlet 312, with the third air inlet 311 connected to the second air outlet 212.

[0070] In order to ensure that the air conditioning assembly includes at least two air conditioner box modules 2 and two air distribution modules 3 to realize the zoned adjustment of temperature, humidity, air volume and mode, the distributed air conditioning assembly is provided with two groups, and each group of the distributed air conditioning assembly includes one air conditioner box module 2 and two air distribution modules 3, and the second air outlet 212 of the air conditioner box module 2 is in communication with the third air inlet 311 of the two air distribution modules 3. Or one distributed air conditioning assembly directly includes two air distribution modules 3 and two air conditioner box modules 2, and the first air outlet 112 of the air inlet module 1 is provided with two, and the two first air outlets 112 are respectively in communication with the second air inlets 211 of the two air conditioner box modules 2, and the second air outlets 212 of the two air conditioner box modules 2 are respectively in communication with the third air inlets 311 of the two air distribution modules 3. The above two setting modes can realize the zoned adjustment of temperature, humidity, air volume and mode.

[0071] Preferably, the first air inlet 111 is provided with two, respectively for the inlet of fresh air and the inlet of circulating air, the air inlet module 1 further includes an air inlet damper 12 and a filter 13, the air inlet damper 12 is used to adjust the air inlet proportion of the two first air inlets 111, and the filter 13 is arranged in the air inlet shell 11.

[0072] Preferably, the air conditioner box module 2 further includes a blower 22, an evaporator 23 and a condenser 24 arranged in the air conditioner box shell 21 to provide the flow power of the air flow and adjust the temperature and humidity of the entering air flow. Preferably, the air conditioner box module 2 further includes an electric heater 25 arranged in the air conditioner box shell 21 to meet the requirements of the user on the speed and the like of the air flow temperature and humidity adjustment.

[0073] Preferably, the air distribution module 3 further includes a face blowing damper 32, a foot blowing damper 33 and a defrosting damper 34, the third air outlet 312 is provided with three, and the three third air outlets 312 are respectively a face blowing air outlet, a foot blowing air outlet and a defrosting air outlet, the face blowing damper 32 is arranged upstream of the face blowing air outlet to adjust the size of the face blowing air flow, the foot blowing damper 33 is arranged upstream of the foot blowing air outlet to adjust the size of the foot blowing air flow, and the defrosting damper 34 is arranged upstream of the defrosting air outlet to adjust the size of the defrosting air flow.

[0074] As shown in the Figure 6 The embodiment also provides a heat pump air conditioning system including the above distributed air conditioning assembly. The heat pump air conditioning system further includes a front-end cooling module 4, a compression separation module 5, a cooling liquid cooling module 6 and a valve group module 7. It should be noted that in the subsequent description, two air conditioner box modules 2 are taken as an example, and of course, three or four air conditioner box modules 2 can be provided, and the control of the three or four air conditioner box modules 2 can be realized by increasing the number of branch pipelines and valves.

[0075] Specifically, the front-end cooling module 4 comprises an external heat exchanger 41 and a fan 42 for enhancing the air flow rate at the external heat exchanger 41. The compression separation module 5 comprises a gas-liquid separator 51 and a compressor 52 connected in series. The coolant cooling module 6 is used for cooling the battery pack or the motor of the vehicle. The valve group module 7 is used for controlling the flow of coolant in the pipelines connected between the front-end cooling module 4, the compression separation module 5, the air conditioning box module 2 and the coolant cooling module 6.

[0076] Preferably, the valve group module 7 comprises a heating expansion valve 71, a heating three-way valve 72, an evaporation pressure regulating valve 73, a heating flow control valve 74, a refrigeration expansion valve 75 and a reversing three-way valve 76. The heating expansion valve 71 is arranged on a pipeline connecting the first node and the B end of the external heat exchanger 41. The first node is connected to the A ends of the evaporators 23 of the at least two air conditioning box modules 2 through at least two first branches, respectively. The refrigeration expansion valve 75 is arranged on each first branch. The B ends of the evaporators 23 of the at least two air conditioning box modules 2 are connected to the second node. The third node is connected to the B ends of the condensers 24 of the at least two air conditioning box modules 2. The fourth node is connected to the A ends of the condensers 24 of the at least two air conditioning box modules 2 through at least two second branches, respectively. The heating flow control valve 74 is arranged on each second branch. The a end, the b end and the c end of the reversing three-way valve 76 are connected to the A end of the gas-liquid separator 51, the fourth node and the A end of the external heat exchanger 41, respectively. The evaporation pressure regulating valve 73 is arranged on a pipeline connecting the second node and the A end of the gas-liquid separator 51. The a end, the b end and the c end of the heating three-way valve 72 are connected to the first node, the second node and the third node, respectively. The B end of the gas-liquid separator 51 is connected to the A end of the compressor 52. The B end of the compressor 52 is connected to the fourth node. The coolant cooling module 6 comprises a coolant cooler 61 and a liquid cooling expansion valve 62. One end of the coolant cooler 61 is connected to the A end of the gas-liquid separator 51. The other end of the coolant cooler 61 is connected to the first node through the liquid cooling expansion valve 62.

[0077] That is, by increasing the number of the first branches, the refrigeration expansion valves 75, the second branches and the heating flow control valves 74, the cooperative control of three or four air conditioning box modules 2 can be adapted.

[0078] As shown in Figures 2-5 , the embodiment further provides a vehicle comprising the heat pump air conditioning system described above. The vehicle comprises a front compartment 100, a passenger compartment 200 and a rear compartment 300.

[0079] As shown in Figure 2 and Figure 3As shown, preferably, the distributed air conditioning assembly is arranged at the front of the vehicle, the air intake module 1 and the air conditioning box module 2 are arranged in front of the firewall 400 in the front compartment 100, the air distribution module 3 is arranged at the front of the passenger compartment 200, i.e. behind the firewall 400, and the third air outlet 312 of each of the two air distribution modules 3 corresponds to the main driver seat and the co-driver seat, respectively, to provide face blowing, foot blowing and defrosting air flow for the main driver seat and the co-driver seat.

[0080] The single-temperature-zone mode is that only one distributed air conditioning assembly is arranged in the vehicle, and the distributed air conditioning assembly includes one air intake module 1, one air conditioning box module 2 and at least two air distribution modules 3.

[0081] As shown in FIG. 1, Figure 3 The dual-temperature-zone mode is that only one distributed air conditioning assembly is arranged in the vehicle, and the distributed air conditioning assembly includes one air intake module 1, two air conditioning box modules 2 and at least two air distribution modules 3, so that different temperature and humidity, air volume and mode can be realized in the two temperature zones by controlling the two air conditioning box modules 2 respectively.

[0082] As shown in FIG. 1, Figure 4 and Figure 5 Preferably, two sets of distributed air conditioning assemblies can be arranged in the vehicle, one set of distributed air conditioning assembly is arranged at the front of the vehicle and adopts the single-temperature-zone or dual-temperature-zone mode, and the other set of distributed air conditioning assembly is arranged at the rear of the vehicle, and the air intake module 1, the air conditioning box module 2 and the air distribution module 3 are arranged in the rear compartment 300, and the third air outlet 312 of each of the two air distribution modules 3 corresponds to the left seat and the right seat of the rear seats, respectively.

[0083] Of course, the distributed air conditioning assembly arranged at the rear of the vehicle can also adopt the single-temperature-zone or dual-temperature-zone mode. When the distributed air conditioning assembly arranged at the front of the vehicle adopts the single-temperature-zone mode and the distributed air conditioning assembly arranged at the rear of the vehicle adopts the dual-temperature-zone mode, or the distributed air conditioning assembly arranged at the front of the vehicle adopts the dual-temperature-zone mode and the distributed air conditioning assembly arranged at the rear of the vehicle adopts the single-temperature-zone mode, it is the three-temperature-zone mode of the whole vehicle. When the distributed air conditioning assembly arranged at the front of the vehicle and the distributed air conditioning assembly arranged at the rear of the vehicle both adopt the dual-temperature-zone mode, it is the four-temperature-zone mode of the whole vehicle, and the main driver seat, the co-driver seat, the left seat and the right seat of the rear seats can have different air flow temperature and humidity, air volume and mode.

[0084] As shown in FIG. 1, Figures 7-15 The embodiment also provides a control method applied to the heat pump air conditioning system, which includes but is not limited to the following modes: whole refrigeration mode, conventional heating mode, maximum heating mode, refrigeration and dehumidification dual-temperature-control mode, heating and dehumidification dual-temperature-control mode, partitioned whole refrigeration and whole heating refrigeration mode, partitioned whole refrigeration and whole heating heating mode, refrigeration cycle ice melting mode and hot gas ice melting mode. P1 in the figure is the first node, P2 is the second node, P3 is the third node, and P4 is the fourth node.

[0085] In the overall cooling mode, the conventional heating mode, the maximum heating mode, the cooling and dehumidifying dual temperature control mode, the heating and dehumidifying dual temperature control mode, the partial cooling and partial heating mode, the ice melting by cooling mode and the ice melting by heating mode, the heating flow control valve 74 is closed, the heating expansion valve 71 and the evaporating pressure regulating valve 73 are in the fully open state, the cooling expansion valves 75 are in the intermediate opening degree, the heating three-way valve 72 is connected at the b end and the c end, and the reversing three-way valve 76 is connected at the b end and the c end.

[0086] As shown in FIG. 6, preferably, the overall cooling mode includes: closing all the heating flow control valves 74, adjusting the heating expansion valves 71 and the evaporating pressure regulating valves 73 to be in the fully open state, adjusting all the cooling expansion valves 75 to be in the intermediate opening degree, and adjusting the heating three-way valves 72 to be connected at the b end and the c end and the reversing three-way valves 76 to be connected at the b end and the c end. Figure 7 In this mode, the high-temperature and high-pressure gaseous heat exchange medium output by the compressor 52 flows into the vehicle exterior heat exchanger 41 from the A end through the reversing three-way valve 76. At this time, the fan 42 is turned on, and the heat exchange medium releases heat to the ambient air flowing through the vehicle exterior heat exchanger 41 in the vehicle exterior heat exchanger 41 to be cooled into a medium-temperature and high-pressure liquid heat exchange medium. Then, the heat exchange medium flows into the first cooling expansion valve 75 and the second cooling expansion valve 75 through the fully open heating expansion valve 71 and the first node, respectively. The heat exchange medium is throttled and expanded into low-temperature and low-pressure two-phase fluid in the two expansion valves, respectively, and then flows into the first evaporator 23 and the second evaporator 23 from the inlet A, respectively. In the two evaporators 23, the two-phase heat exchange medium exchanges heat with the air conditioning box air flow flowing through the evaporator 23. The air flow releases heat, and the temperature and humidity decrease, and the heat exchange medium absorbs heat to be vaporized into low-temperature and low-pressure gas. The gaseous heat exchange medium flows out of the two evaporators 23 from the B end, respectively, and converges at the second node, and then sequentially flows through the fully open evaporating pressure regulating valve 73 and the gas-liquid separator 51, and finally returns to the compressor 52.

[0087] The air inlets of the two air conditioning box modules 2 are cooled by the two evaporators 23, respectively, and the temperature and humidity are reduced, thereby realizing the cooling function. In this mode, the air door of the air distribution module 3 of the distributed air conditioning assembly is placed in the blowing position according to the system control requirement, thereby realizing the cooling blowing function of the passenger compartment 200 on the whole vehicle.

[0088]

[0089] ​Simultaneously, according to the needs of the battery thermal management system, the liquid-cooled expansion valve 62 can be opened and adjusted to an intermediate opening position. At this time, part of the medium-temperature, high-pressure liquid heat exchange medium flowing out from the first node flows into the liquid-cooled expansion valve 62, expands after throttling, and becomes a low-temperature, low-pressure two-phase fluid. Then, it absorbs the heat from the battery pack coolant flowing through the coolant 61 from the other side and vaporizes into a low-temperature, low-pressure gas, which finally returns to the gas-liquid separator 51 and the compressor 52. After the battery pack coolant flows through the coolant 61, it releases heat to the heat exchange medium, and the temperature drops to the set target.

[0090] like Figure 8 As shown, preferably, the conventional heating mode includes: opening all heating flow control valves 74 to their maximum opening, heating expansion valve 71 in the adjustment position, closing evaporation pressure regulating valve 73 and all cooling expansion valves 75, adjusting the connection between ends a and c of heating three-way valve 72, connecting ends a and c of reversing three-way valve 76, opening liquid cooling expansion valve 62, and adjusting it to the intermediate opening.

[0091] In this mode, the high-temperature, high-pressure gaseous heat exchange medium output by compressor 52 flows into the condensers 24 of the two air conditioning module 2 through two heating flow control valves 74. Inside the two condensers 24, the gaseous heat exchange medium exchanges heat with the air conditioning airflow flowing through the condensers 24. The airflow absorbs heat and its temperature rises, while the heat exchange medium releases heat and liquefies into a medium-temperature, high-pressure liquid. The liquid heat exchange medium flows out of the two condensers 24 and merges at the third node, passing through the heating three-way valve 72 and the first node in sequence, before entering the heating expansion valve 71. The medium-temperature, high-pressure liquid heat exchange medium expands and throttles inside the heating expansion valve 71, becoming a low-temperature, low-pressure two-phase fluid, and then flows into the external heat exchanger 41 from end B. At this time, fan 42 is turned on, and the heat exchange medium absorbs heat from the ambient air flowing through the external heat exchanger 41 and vaporizes into a low-temperature, low-pressure gas. The gaseous heat exchange medium flows out from end A of the external heat exchanger 41, flows through the reversing three-way valve 76 and the gas-liquid separator 51 in sequence, and finally returns to the compressor 52.

[0092] In contrast to the overall cooling mode, in the conventional heating mode, the heat exchange medium flows in from end B of the external heat exchanger 41 and out from end A. That is, the flow direction of the heat exchange medium within the external heat exchanger 41 is opposite in cooling and heating modes. Both the evaporation and condensation processes of the heat exchange medium are accompanied by significant volume changes. The external heat exchanger 41 widely adopts a multi-pass parallel flow structure, with multiple heat exchange tubes connected in parallel in each pass. Currently, many heat pump systems use a design where cooling and heating flow in the external heat exchanger 41 in the same direction. From a performance trade-off perspective, this necessitates a two- or three-pass design with a basically even distribution of heat exchange tubes, which limits the performance of the heat exchanger. The vehicle provided in this embodiment uses a reverse flow design, which allows for a non-uniformly distributed heat exchange tube flow design. Specifically, in the condensation condition of the cooling mode, the number of flat tubes in each pass decreases sequentially along the flow direction of the heat exchange medium. In the evaporation condition of the heating mode, due to the reverse flow of the heat exchange medium, the number of flat tubes in each pass increases sequentially along the flow direction of the heat exchange medium. In this way, whether it is the condensation or evaporation process, the number of flat tubes in each process is consistent with the volume change of the heat exchange medium in the direction of heat exchange medium flow. This significantly reduces the flow resistance of the heat exchange medium in the external heat exchanger 41, and the heat exchange performance, especially the heat absorption performance under evaporation conditions, is significantly improved.

[0093] The intake air of the two air conditioning modules 2 is heated by the two condensers 24, thus raising the temperature and realizing the conventional heating function of the air conditioning system. In this mode, the damper of the air distribution module 3 of the distributed air conditioning assembly is positioned at the foot blowing position according to the system control requirements, thereby realizing the function of foot heating in the passenger compartment 200 throughout the vehicle.

[0094] In this mode, the working mode and heat exchange medium circulation method of the coolant cooling module 6 are the same as those of the overall refrigeration mode.

[0095] like Figure 9 As shown, preferably, the maximum heating mode includes: opening all cooling expansion valves 75 to their maximum opening, opening all heating flow control valves 74 to their maximum opening, placing the heating expansion valve 71 in the adjustment position, closing the evaporation pressure regulating valve 73, adjusting the connection between the b and c ends of the heating three-way valve 72, connecting the b and c ends of the reversing three-way valve 76, opening the liquid-cooled expansion valve 62 and adjusting it to the intermediate opening, opening the electric heaters 25 of at least two air conditioning unit modules 2, and adjusting at least two air distribution modules 3 to foot blowing or defrosting mode.

[0096] In this mode, the medium temperature heat exchange medium flows out of the third node, passes through the heating three-way valve 72, and then flows into the second node, and then flows into the B end of the two evaporators 23 respectively. Inside the two evaporators 23, the heat exchange medium exchanges heat with the air conditioning box air flow flowing through the evaporators 23, the air flow absorbs heat and the temperature rises, and the temperature of the heat exchange medium further decreases. The liquid heat exchange medium flows out of the two evaporators 23 from the A end respectively, and then passes through the two refrigeration expansion valves 75 in the full open state respectively, and then converges at the first node. Upstream of the third node and downstream of the first node, the flow direction of the heat exchange medium is the same as that in the conventional heating mode.

[0097] The air inlet of the air conditioning box module 2 successively passes through the condenser 24 and the evaporator 23, and the air inlet in the air conditioning box module 2 is heated twice and the temperature is raised step by step, so as to realize the maximum heating function. In this mode, the two electric heaters 25 can be turned on, so as to further improve the outlet air temperature.

[0098] In this mode, the air distribution module 3 of the distributed air conditioning assembly is placed in the foot blowing or defrosting position according to the system control requirement, so as to realize the functions of passenger compartment 200 heating or glass defrosting on the whole vehicle.

[0099] In this mode, the working mode of the cooling liquid cooling module 6 and the circulation mode of the heat exchange medium are the same as those in the whole refrigeration mode.

[0100] As shown in Figure 10 Preferably, the refrigeration and dehumidification dual temperature control mode includes: turning on all the heating flow control valves 74 and all the refrigeration expansion valves 75 to the middle opening degree, turning on the heating expansion valve 71 and the evaporating pressure regulating valve 73 to the full open position, adjusting the a end and the c end of the heating three-way valve 72 to be communicated, adjusting the b end and the c end of the reversing three-way valve 76 to be communicated, turning on the liquid cooling expansion valve 62, and adjusting it to the middle opening degree.

[0101] In this mode, the high-temperature and high-pressure gaseous heat exchange medium outputted by the compressor 52 is divided into two paths: one path respectively flows into the two condensers 24 through the two heating flow control valves 74, and heats the air flow flowing through the in-vehicle condensers 24, the heat exchange medium is liquefied into medium-temperature and high-pressure liquid at the outlet of the condensers 24, and then flows to the first node through the third node and the heating three-way valve 72. The other path flows into the out-of-vehicle heat exchanger 41 from the A end through the reversing three-way valve 76, and releases heat to the ambient air flowing through the out-of-vehicle heat exchanger 41, the heat exchange medium is liquefied into medium-temperature and high-pressure liquid at the B end of the out-of-vehicle heat exchanger 41, and then also flows to the first node through the fully open heating expansion valve 71. The two paths of liquid heat exchange medium are combined at the first node, and then respectively flow into the two refrigeration expansion valves 75. The heat exchange medium is throttled and expanded in the two expansion valves respectively, and becomes low-temperature and low-pressure two-phase fluid, and then respectively flows into the A end of the two evaporators 23, and cools the air flow flowing through the evaporators 23, and the heat exchange medium is vaporized into low-temperature and low-pressure gas by absorbing heat. The gaseous heat exchange medium flows out from the B end of the two evaporators 23 respectively, and is combined at the second node, and then flows through the fully open evaporating pressure regulating valve 73 and the gas-liquid separator 51 in turn, and finally returns to the compressor 52.

[0102] The air inlet of the air conditioning box module 2 first flows through the evaporator 23, and the air is cooled and the temperature and humidity are reduced, and then flows through the condenser 24, and the air is heated and the temperature is partially restored. Since in this mode, the out-of-vehicle heat exchanger 41 releases heat to the environment, and the total refrigeration power of the two evaporators 23 is higher than the total heating power of the two condensers 24, the average outlet air temperature of the air conditioning box module 2 is lower than or equal to the air inlet, and thus the passenger compartment 200 as a whole exhibits refrigeration, i.e. the refrigeration and dehumidification mode is realized.

[0103] By adjusting the opening degree of the two heating flow control valves 74 respectively, the flow distribution ratio of the heat exchange medium flowing into the two condensers 24 can be adjusted, and by adjusting the opening degree of the two refrigeration expansion valves 75 respectively, the flow distribution ratio of the heat exchange medium flowing into the two evaporators 23 can be adjusted. Through the combined adjustment of the above-mentioned valve components, the two air conditioning box modules 2 can respectively realize different outlet air temperatures and humidities, so as to realize the double-temperature-zone control of the outlet air. The two electric heaters 25 can be turned on to assist in the accurate control of the double-temperature-zone.

[0104] In this mode, according to the system control requirements, the dampers of the two air distribution modules 3 can be placed at different positions, so that the main driver and the copilot of the passenger compartment 200 realize different outlet air modes.

[0105] As Figure 11As shown, preferably, the dual temperature control mode for heating and dehumidification includes: opening all heating flow control valves 74, cooling expansion valves 75, heating expansion valves 71 and evaporation pressure regulating valves 73 to the middle opening degree; adjusting the connection between ends a and c of the heating three-way valve 72; connecting ends a and c of the reversing three-way valve 76; and opening the liquid-cooled expansion valve 62 and adjusting it to the middle opening degree.

[0106] Similar to the dual-temperature control mode of cooling and dehumidification, the air intake of the air conditioning unit passes through the evaporator 23 and condenser 24 in the air conditioning unit module 2, where it is first cooled and then heated, thus reducing humidity. Because the external heat exchanger 41 absorbs heat from the environment in this mode, the total cooling power of the two evaporators 23 is lower than the total heating power of the two condensers 24. Therefore, the average outlet air temperature of the air conditioning unit module 2 is higher than the intake air temperature, resulting in the passenger compartment 200 operating primarily for heating, thus achieving a heating and dehumidification mode.

[0107] like Figure 12 As shown, preferably, the zoned full cooling and full heating mode includes: closing the heating flow control valve 74 connected to the condenser 24 of a portion of the air conditioning unit module 2, opening the cooling expansion valve 75 connected to the evaporator 23 of this portion of the air conditioning unit module 2, opening the heating flow control valve 74 of the condenser 24 of the remaining air conditioning unit modules 2, closing the cooling expansion valve 75 of the evaporator 23 of the remaining air conditioning unit modules 2, opening the heating expansion valve 71 and the evaporation pressure regulating valve 73 to the fully open position, adjusting the connection between the a and c ends of the heating three-way valve 72, connecting the b and c ends of the reversing three-way valve 76, and opening the liquid cooling expansion valve 62 and adjusting it to the middle opening degree.

[0108] One air conditioning module 2 receives only cooled air, while the other receives only heated air, thus placing the two modules in a fully cooled and fully heated state, respectively. Because the external heat exchanger 41 dissipates heat to the environment in this mode, the cooling capacity of one evaporator 23 is higher than the heating capacity of the other condenser 24, resulting in an overall cooled passenger compartment 200. According to system control requirements, the damper of the fully cooled air distribution submodule is positioned for face blowing, while the damper of the fully heated air distribution submodule is positioned for foot blowing or defrosting.

[0109] like Figure 13 As shown, preferably, the zoned full cooling and full heating mode includes: closing the heating flow control valve 74 connected to the condenser 24 of a portion of the air conditioning unit module 2, opening the refrigeration expansion valve 75 connected to the evaporator 23 of this portion of the air conditioning unit module 2, opening the heating flow control valve 74 of the condenser 24 of the remaining air conditioning unit modules 2, closing the refrigeration expansion valve 75 of the evaporator 23 of the remaining air conditioning unit modules 2, opening the heating expansion valve 71 and the evaporation pressure regulating valve 73 to the intermediate opening degree, adjusting the connection between the a and c ends of the heating three-way valve 72, connecting the a and c ends of the reversing three-way valve 76, opening the liquid cooling expansion valve 62, and adjusting it to the intermediate opening degree.

[0110] One air conditioning box module 2's intake air is only cooled, and the other air conditioning box module 2's intake air is only heated, thereby forming two air conditioning box modules 2 in full cooling and full heating states respectively. Since the vehicle external heat exchanger 41 absorbs heat from the environment in this mode, the refrigeration power of the evaporator 23 of one is lower than the heating power of the condenser 24 of the other, so the passenger compartment 200 as a whole exhibits heating. In this mode, the electric heater 25 of the second air conditioning box module 2 can be turned on, thereby further increasing the outlet air temperature of the second air conditioning box module 2. According to system control requirements, the damper of the first air distribution module 3 is in the face blowing position, and the damper of the second air distribution module 3 is in the foot blowing or defrosting position.

[0111] As shown in Figure 14 Preferably, the ice melting mode of the refrigeration cycle includes: closing all the heating flow control valves 74, adjusting the heating expansion valve 71 and the evaporating pressure regulating valve 73 to the fully open state, adjusting all the refrigeration expansion valves 75 to the intermediate opening degree, adjusting the heating three-way valve 72 to connect the b end and the c end, adjusting the reversing three-way valve 76 to connect the b end and the c end, opening the liquid cooling expansion valve 62 and adjusting it to the intermediate opening degree, and opening the electric heater 25 of at least one air conditioning box module 2.

[0112] The low-temperature and low-pressure two-phase heat exchange medium passes through the two evaporators 23 and absorbs heat in the passenger compartment 200, passes through the cooling liquid cooler 61 and absorbs heat in the battery pack cooling liquid or motor electronic control cooling liquid, is compressed by the compressor 52 into high-temperature and high-pressure gaseous heat exchange medium, and finally releases heat to the outside in the vehicle external heat exchanger 41, and the ice layer on the surface of the vehicle external heat exchanger 41 absorbs heat and melts. During the ice melting process, the fan 42 is not turned on to reduce heat dissipation to the surrounding environment air and improve the ice melting speed.

[0113] The intake air of the first air conditioning box module 2 and the second air conditioning box module 2 respectively passes through the first evaporator 23 and the second evaporator 23 and is cooled, the temperature is lowered, and then respectively flows through the first electric heater 25 and the second electric heater 25, and the temperature is raised, thereby ensuring that the outlet air temperature does not change significantly after entering this mode.

[0114] As shown in Figure 15 Preferably, the hot gas ice melting mode includes: opening all the heating flow control valves 74 to the maximum opening degree, adjusting the heating expansion valve 71 to the regulating position, closing the evaporating pressure regulating valve 73, all the refrigeration expansion valves 75 and the liquid cooling expansion valve 62, adjusting the heating three-way valve 72 to connect the a end and the c end, adjusting the reversing three-way valve 76 to connect the a end and the c end, and closing the fan 42.

[0115] In this condition, the ice melting heat is completely from the compression work of the compressor 52 to the heat exchange medium. In order to improve the ice melting speed, the heating expansion valve 71 is set at a large opening position to throttle, so as to increase the pressure difference between the inlet and outlet of the compressor 52 and improve the output power of the compressor 52.

[0116] When the first air blower 22 and the second air blower 22 are both working at the minimum air volume, the air inlets of the first air conditioning box module 2 and the second air conditioning box module 2 are heated by the first condenser 24 and the second condenser 24 respectively, and then flow through the first electric heater 25 and the second electric heater 25 and are secondarily heated as needed, so as to ensure that the passenger cabin can still be heated after entering this mode.

[0117] Obviously, the above embodiments of the present application are merely exemplary for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the implementation modes are not required or possible to be exhausted. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A heat pump air conditioning system, characterized in that, Includes a distributed air conditioning assembly, the distributed air conditioning assembly comprising: An air intake module (1) is provided, the air intake module (1) includes an air intake housing (11), the air intake housing (11) has at least one first air inlet (111) and one first air outlet (112), the first air inlet (111) is provided in two places, which are used to intake fresh air and intake recirculated air respectively; An air conditioning unit module (2) includes an air conditioning unit housing (21), on which a second air inlet (211) and a second air outlet (212) are provided. The second air inlet (211) is connected to the first air outlet (112). The air conditioning unit module (2) also includes a blower (22), an evaporator (23) and a condenser (24) disposed in the air conditioning unit housing (21). The air conditioning unit module (2) also includes an electric heater (25) disposed in the air conditioning unit housing (21). The air distribution module (3) includes an air distribution housing (31), which has a third air inlet (311) and at least one third air outlet (312) on it. The third air inlet (311) is connected to the second air outlet (212). The distributed air conditioning assembly is provided in two sets, and each set of the distributed air conditioning assembly includes one air conditioning box module (2) and two air distribution modules (3). The second air outlet (212) of the air conditioning box module (2) is connected to the third air inlet (311) of the two air distribution modules (3). Alternatively, the distributed air conditioning assembly may include two air distribution modules (3) and two air conditioning unit modules (2). The first air outlet (112) of the air intake module (1) is provided with two, and the two first air outlets (112) are respectively connected to the second air inlets (211) of the two air conditioning unit modules (2). The second air outlets (212) of the two air conditioning unit modules (2) are respectively connected to the third air inlets (311) of the two air distribution modules (3). The heat pump air conditioning system also includes a front-end cooling module (4), a compression separation module (5), a coolant cooling module (6), and a valve group module (7). The front-end cooling module (4) includes an external heat exchanger (41) and a fan (42). The fan (42) is used to enhance the airflow speed at the external heat exchanger (41). The compression separation module (5) includes a gas-liquid separator (51) and a compressor (52) connected in series. The coolant cooling module (6) is used to cool the vehicle's battery pack or motor. The valve group module (7) is used to control the flow rate of coolant in the pipeline connected between the front-end cooling module (4), the compression separation module (5), the air conditioning box module (2), and the coolant cooling module (6). The valve module (7) includes a heating expansion valve (71), a heating three-way valve (72), an evaporation pressure regulating valve (73), a heating flow control valve (74), a cooling expansion valve (75), and a reversing three-way valve (76). The heating expansion valve (71) is installed on the pipeline connecting the first node and the B end of the vehicle exterior heat exchanger (41). The first node is connected to the A end of the evaporator (23) of at least two air conditioning unit modules (2) through at least two first branches. Each first branch is equipped with the cooling expansion valve (75). The B ends of the evaporators (23) of at least two air conditioning unit modules (2) are connected to the second node. The third node is connected to the B end of the condenser (24) of at least two air conditioning unit modules (2). The fourth node is connected to the A end of the condenser (24) of at least two air conditioning unit modules (2) through at least two second branches. Each second branch is equipped with the cooling expansion valve (75). The heating flow control valve (74) is provided. The a, b, and c ends of the reversing three-way valve (76) are respectively connected to the A end of the gas-liquid separator (51), the fourth node, and the A end of the vehicle external heat exchanger (41). The evaporation pressure regulating valve (73) is provided on the pipeline between the second node and the A end of the gas-liquid separator (51). The a, b, and c ends of the heating three-way valve (72) are respectively connected to the first node, the second node, and the third node. The B end of the gas-liquid separator (51) is connected to the A end of the compressor (52). The B end of the compressor (52) is connected to the fourth node. The coolant cooling module (6) includes a coolant cooler (61) and a liquid-cooled expansion valve (62). One end of the coolant cooler (61) is connected to the A end of the gas-liquid separator (51), and the other end is connected to the first node through the liquid-cooled expansion valve (62).

2. The heat pump air conditioning system according to claim 1, characterized in that, The air intake module (1) also includes an air intake damper (12) and a filter (13). The air intake damper (12) is used to adjust the air intake ratio of the two first air inlets (111). The filter (13) is disposed inside the air intake housing (11).

3. The heat pump air conditioning system according to claim 1, characterized in that, The air distribution module (3) further includes a face-blowing damper (32), a foot-blowing damper (33), and a defrosting damper (34). There are three third air outlets (312), which are respectively a face-blowing air outlet, a foot-blowing air outlet, and a defrosting air outlet. The face-blowing damper (32) is located upstream of the face-blowing air outlet, the foot-blowing damper (33) is located upstream of the foot-blowing air outlet, and the defrosting damper (34) is located upstream of the defrosting air outlet.

4. A vehicle, characterized in that, The vehicle includes a heat pump air conditioning system as described in any one of claims 1-3, and the vehicle includes a front compartment (100), a passenger compartment (200), and a rear compartment (300).

5. The vehicle according to claim 4, characterized in that, The distributed air conditioning assembly is located at the front of the vehicle. The air intake module (1) and the air conditioning unit module (2) are both located in the front compartment (100). The air distribution module (3) is located at the front of the passenger compartment (200). The third air outlet (312) of the two air distribution modules (3) are respectively located at the driver's seat and the passenger seat.

6. The vehicle according to claim 4 or 5, characterized in that, Two sets of distributed air conditioning assemblies are provided. One set of the distributed air conditioning assemblies is located at the rear of the vehicle. The air intake module (1), the air conditioning box module (2) and the air distribution module (3) are all located in the rear compartment (300). The third air outlet (312) of the two air distribution modules (3) corresponds to the left and right seats of the rear seats, respectively.

7. A control method, characterized in that, The control method, applied to the heat pump air conditioning system as described in any one of claims 1-3, includes an overall cooling mode, a conventional heating mode, a maximum heating mode, a dual-temperature control mode for cooling and dehumidification, a dual-temperature control mode for heating and dehumidification, a zoned full-cooling and full-heating cooling mode, a zoned full-cooling and full-heating heating mode, a cooling cycle de-icing mode, and a hot gas de-icing mode. The overall cooling mode is used to cool the passenger compartment (200). The conventional heating mode and the maximum heating mode are both used to heat the passenger compartment (200). The dual-temperature control mode for cooling and dehumidification is used to cool and dehumidify the passenger compartment (200). The dual-temperature control mode for heating and dehumidification is used to heat and dehumidify the passenger compartment (200). The zoned full-cooling and full-heating cooling mode and the zoned full-cooling and full-heating heating mode are both used to heat a portion of the passenger compartment (200) while cooling the remaining areas. The cooling cycle de-icing mode and the hot gas de-icing mode are both used to de-ice the external heat exchanger (41).

8. The control method according to claim 7, characterized in that, The overall cooling mode includes: closing all heating flow control valves (74), adjusting the heating expansion valve (71) and evaporation pressure regulating valve (73) to the fully open state, adjusting all cooling expansion valves (75) to the intermediate opening degree, adjusting the b end and c end of the heating three-way valve (72) to be connected, and the b end and c end of the reversing three-way valve (76) to be connected.

9. The control method according to claim 7, characterized in that, The conventional heating mode includes: opening all heating flow control valves (74) to their maximum opening, heating expansion valve (71) in the adjustment position, closing evaporation pressure regulating valve (73) and all cooling expansion valves (75), adjusting the connection between end a and end c of heating three-way valve (72), connecting end a and end c of reversing three-way valve (76), opening liquid cooling expansion valve (62), and adjusting it to the intermediate opening.

10. The control method according to claim 7, characterized in that, The maximum heating mode includes: opening all refrigeration expansion valves (75) to the maximum opening, opening all heating flow control valves (74) to the maximum opening, heating expansion valve (71) in the adjustment position, closing the evaporation pressure regulating valve (73), adjusting the b end and c end of the heating three-way valve (72) to connect, the b end and c end of the reversing three-way valve (76) to connect, opening the liquid cooling expansion valve (62) to the intermediate opening, turning on the electric heaters (25) of at least two air conditioning unit modules (2), and adjusting at least two air distribution modules (3) to foot blowing or defrosting mode.

11. The control method according to claim 7, characterized in that, The dual temperature control mode for cooling and dehumidification includes: opening all heating flow control valves (74) and all cooling expansion valves (75) to the middle opening degree, opening the heating expansion valve (71) and evaporation pressure regulating valve (73) to the fully open position, adjusting the a end and c end of the heating three-way valve (72) to connect, connecting the b end and c end of the reversing three-way valve (76), and opening the liquid cooling expansion valve (62) to the middle opening degree.

12. The control method according to claim 7, characterized in that, The heating and dehumidification dual temperature control mode includes: opening all heating flow control valves (74), cooling expansion valves (75), heating expansion valves (71) and evaporation pressure regulating valves (73) to the middle opening degree, adjusting the a end and c end of the heating three-way valve (72) to connect, connecting the a end and c end of the reversing three-way valve (76), and opening the liquid cooling expansion valve (62) to the middle opening degree.

13. The control method according to claim 7, characterized in that, The partitioned full-cooling and full-heating cooling mode includes: closing the heating flow control valve (74) connected to the condenser (24) of a portion of the air conditioning unit module (2), opening the refrigeration expansion valve (75) connected to the evaporator (23) of this portion of the air conditioning unit module (2), opening the heating flow control valve (74) of the condenser (24) of the remaining air conditioning unit modules (2), closing the refrigeration expansion valve (75) of the evaporator (23) of the remaining air conditioning unit modules (2), opening the heating expansion valve (71) and the evaporation pressure regulating valve (73) to the fully open position, adjusting the connection between the a end and the c end of the heating three-way valve (72), connecting the b end and the c end of the reversing three-way valve (76), and opening the liquid cooling expansion valve (62) to the intermediate opening degree.

14. The control method according to claim 7, characterized in that, The partitioned full cooling and full heating mode includes: closing the heating flow control valve (74) connected to the condenser (24) of a portion of the air conditioning unit module (2), opening the refrigeration expansion valve (75) connected to the evaporator (23) of this portion of the air conditioning unit module (2), opening the heating flow control valve (74) of the condenser (24) of the remaining air conditioning unit modules (2), closing the refrigeration expansion valve (75) of the evaporator (23) of the remaining air conditioning unit modules (2), opening the heating expansion valve (71) and the evaporation pressure regulating valve (73) to the intermediate opening, adjusting the connection between the a end and the c end of the heating three-way valve (72), connecting the a end and the c end of the reversing three-way valve (76), and opening the liquid cooling expansion valve (62) to the intermediate opening.

15. The control method according to claim 7, characterized in that, The refrigeration cycle de-icing mode includes: closing all heating flow control valves (74), adjusting the heating expansion valve (71) and evaporation pressure regulating valve (73) to the fully open state, adjusting all refrigeration expansion valves (75) to the intermediate opening degree, adjusting the b end and c end of the heating three-way valve (72) to connect, the b end and c end of the reversing three-way valve (76) to connect, opening the liquid cooling expansion valve (62) to the intermediate opening degree, and turning on the electric heaters (25) of at least two air conditioning unit modules (2).

16. The control method according to claim 7, characterized in that, The hot gas de-icing mode includes: opening all heating flow control valves (74) to their maximum opening, heating expansion valve (71) in the adjustment position, closing evaporation pressure regulating valve (73), all refrigeration expansion valves (75) and liquid cooling expansion valve (62), adjusting the connection between end a and end c of heating three-way valve (72), connecting end a and end c of reversing three-way valve (76), and turning off fan (42).

Images