Vehicle-mounted air conditioning system and vehicle

Abstract

The present invention provides a vehicle-mounted air conditioning system and vehicle, specifically relating to the field of automotive technology. The vehicle-mounted air conditioning system includes: an air conditioning circuit, comprising a heat exchanger, an air-supply and heat-increasing module, and a condenser, the condenser being connected to the heat exchanger via the air-supply and heat-increasing module; an air conditioning water pump, comprising a cold water pump and a hot water pump, the cold water pump being connected to the heat exchanger and driving a cold water flow through the heat exchanger when the cold water pump rotates; the hot water pump being connected to the condenser and driving a hot water flow through the condenser when the hot water pump rotates; an air conditioning box, comprising a first core and a second core, the first core and the second core being connected to the hot water pump and the cold water pump; and a motor circuit, comprising a multi-way valve and a drive motor, the drive motor being connected to the air conditioning circuit via the multi-way valve. The vehicle-mounted air conditioning system provided by the present invention improves the cooling and heating performance of the vehicle air conditioning.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a vehicle-mounted air-conditioning system and a vehicle. Background Art

[0002] Vehicle air conditioning systems use R134a (C2H2F4, 1,1,1,2-tetrafluoroethane) or R1234yf (2,3,3,3-tetrafluoropropylene) as refrigerants. In low-temperature conditions, such as below -18°C, water-heated PTC (Positive Temperature Coefficient) thermistors are primarily used to heat the passenger compartment. When the ambient temperature is -10°C or above, heat pump air conditioning and air-heated PTC systems are primarily used to heat the passenger compartment. However, heat pump technology using R134a or R1234yf as a refrigerant does not comply with national regulations, and its heating effect is also poor in low-temperature environments. Even when using water-heated PTC and air-heated PTC systems as the primary heating sources, the passenger compartment temperature cannot meet heating requirements in low-temperature environments. Summary of the Invention

[0003] In view of the above shortcomings of the prior art, the object of the present invention is to provide a vehicle air-conditioning system and a vehicle. Through the vehicle air-conditioning system of the present invention, the heating needs in a low-temperature environment can be achieved without the assistance of any PTC heater, and the safety and energy utilization of the vehicle air-conditioning system are improved.

[0004] To achieve the above and other related purposes, the present invention provides a vehicle air conditioning system, comprising:

[0005] An air conditioning circuit, comprising a heat exchanger, an air supply and enthalpy increase module, and a condenser, wherein the output end of the condenser is connected to the input end of the air supply and enthalpy increase module, and the output end of the air supply and enthalpy increase module is connected to the input end of the heat exchanger;

[0006] The air conditioning water pump includes a cold water pump and a hot water pump, wherein the cold water pump is connected to the heat exchanger and when the cold water pump rotates, the cold water flows through the heat exchanger; the hot water pump is connected to the condenser and when the hot water pump rotates, the hot water flows through the condenser;

[0007] An air conditioning box, comprising a first core and a second core, wherein the first core and the second core are connected to the hot water exchange pump and the cold water exchange pump, and the cold water exchange flow or the hot water exchange flow passes through the first core and the second core; and

[0008] The motor circuit includes a multi-way valve and a drive motor. The drive motor is connected to the port of the multi-way valve, and is connected to the air-conditioning circuit through the communication of the port of the multi-way valve.

[0009] In one embodiment of the present invention, the air-conditioning circuit further includes a first electronic expansion valve, and the condenser is connected to the air-supplying and enthalpy-increasing module via the first electronic expansion valve.

[0010] In one embodiment of the present invention, the air-conditioning water pump further includes a first three-way valve, and the first three-way valve is connected to the water exchange water pump.

[0011] In one embodiment of the present invention, the air-conditioning water pump further includes a second three-way valve, and the cooling water pump is connected to the second core through the second three-way valve.

[0012] In one embodiment of the present invention, the air conditioning box includes an air conditioning box body, and the first core and the second core are disposed in an inner cavity of the air conditioning box body.

[0013] In one embodiment of the present invention, the motor circuit includes a drive motor water pump, one end of which is connected to the drive motor.

[0014] In one embodiment of the present invention, the motor circuit includes a radiator, one end of the radiator is connected to the drive motor water pump, and the other end of the radiator is connected to the port of the multi-way valve.

[0015] In one embodiment of the present invention, the vehicle air conditioning system further includes a battery circuit, the battery circuit includes a battery water pump, and one end of the battery water pump is connected to the port of the multi-way valve.

[0016] In one embodiment of the present invention, the battery circuit further includes an on-board battery pack, one end of the on-board battery pack is connected to the battery water pump, and the other end of the on-board battery pack is connected to the port of the multi-way valve.

[0017] The present invention also provides a vehicle, comprising any one of the above-mentioned vehicle air-conditioning systems.

[0018] In summary, the vehicle air conditioning system and vehicle provided by the present invention, by replacing R134a or R1234yf refrigerant with R290 (propane) refrigerant, not only comply with national plans but also achieve rapid heating in low-temperature environments, such as -30°C, meeting the heating needs of the entire vehicle. Furthermore, the refrigerant does not enter the passenger compartment, and the air conditioning cooling and heating circuits are centrally arranged, ensuring the safety of the vehicle air conditioning system. Furthermore, dual-core cooling, dual-core heating, and second-core cooling and first-core heating are achieved through the first and second cores, thereby meeting the air conditioning and heating needs under various operating conditions and improving the cooling and heating effects of the vehicle air conditioner.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 The figure is a schematic structural diagram of a vehicle air-conditioning system according to the present invention.

[0022] Figure 2 This is a structural schematic diagram of a vehicle air-conditioning system implementing dual-core refrigeration according to the present invention.

[0023] Figure 3 This is a structural diagram of a vehicle air-conditioning system implementing dual-core heating according to the present invention.

[0024] Figure 4 This is a structural schematic diagram of a vehicle air-conditioning system of the present invention that realizes heating by a first core and cooling by a second core.

[0025] Figure 5 This is a schematic structural diagram of a vehicle-mounted air-conditioning system for cooling a vehicle-mounted battery pack.

[0026] Figure 6 This is a schematic structural diagram of achieving temperature increase of a vehicle-mounted battery pack in a vehicle-mounted air-conditioning system of the present invention.

[0027] Figure 7 This is a schematic structural diagram of a vehicle air-conditioning system according to the present invention when there is no heating or heat dissipation demand.

[0028] Component number description

[0029] 100, air conditioning circuit; 110, heat exchanger; 120, compressor; 130, condenser; 140, air supply and enthalpy increase module; 150, first electronic expansion valve; 160, second electronic expansion valve; 200, air conditioning water pump; 210, cold water exchange pump; 220, hot water exchange pump; 300, air conditioning box; 310, first core; 320, second core; 330, blower; 340, air conditioning box body; 400, motor circuit; 410, drive motor; 420, drive motor water pump; 430, radiator; 440, kettle; 450, multi-way valve; 500, battery circuit; 510, vehicle-mounted battery pack; 520, battery water pump. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following examples and the features in the examples can be combined with each other unless they conflict. It should also be understood that the terms used in the examples of the present invention are for the purpose of describing specific embodiments, not for the purpose of limiting the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0031] See also Figures 1 to 7 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0032] When numerical ranges are given in the examples, it should be understood that unless otherwise specified herein, both endpoints of each numerical range and any value between the two endpoints may be used. Unless otherwise defined, all technical and scientific terms used herein are consistent with the prior art as understood by those skilled in the art and the description of the present invention. Any prior art methods, devices, and materials similar or equivalent to those described in the examples of the present invention may also be used to implement the present invention.

[0033] In one embodiment of the present invention, the present application provides a vehicle that can be equipped with an on-board air conditioning system provided by the present application. The on-board air conditioning system has a simple and compact structure, which not only saves on refrigerant filling but also occupies little space in the vehicle, providing space for the installation of other vehicle auxiliary functions. Moreover, by starting the on-board air conditioning system, the vehicle can safely meet the heating requirements of the passenger compartment in a low-temperature environment, such as -30°C, thereby improving the customer's driving experience. Moreover, the vehicle can also meet the cooling requirements of the passenger compartment in a high-temperature environment, and can also meet the heating and cooling requirements of the on-board battery, preventing the on-board battery from malfunctioning due to excessively high or low battery temperatures, thereby preventing driving safety hazards.

[0034] See also Figure 1 In one embodiment of the present invention, a vehicle air conditioning system provided herein includes an air conditioning circuit 100, an air conditioning water pump 200, an air conditioning box 300, a motor circuit 400, and a battery circuit 500. The air conditioning water pump 200 is connected to the air conditioning circuit 100 via a pipeline. The rotation of the air conditioning water pump 200 drives a cold water flow through the heat exchanger 110 in the air conditioning circuit 100. The rotation of the air conditioning water pump 200 also drives a hot water flow through the condenser 140 in the air conditioning circuit 100, generating a hot water flow and a cold water flow. The air conditioning box 300 is connected to the air conditioning water pump 200. The water flow driven by the rotation of the air conditioning water pump 200 passes through the air conditioning circuit 100 and then through the air conditioning box 300. The motor circuit 400 includes a multi-way valve 450. The motor circuit 400 is connected to the air conditioning circuit 100 and the battery circuit 500 through the ports of the multi-way valve 450.

[0035] See also Figure 1As shown, in one embodiment of the present invention, an air conditioning circuit 100 includes a heat exchanger 110, a compressor 120, a condenser 130, a gas enthalpy supplementation module 140, a first electronic expansion valve 150, and a second electronic expansion valve 160. For example, R290 refrigerant is disposed in the heat exchanger 110. Because the global warming potential (GWP) of R134 and R1234yf refrigerants is much higher than that of R290, and R290 has a low saturation temperature at low pressure, it can absorb heat from the environment even at temperatures of, for example, -30°C, R290 is preferably used as the refrigerant in this application. The output of the heat exchanger 110 includes a water output and a gas output. The gas output of the heat exchanger 110 is connected to the input of the compressor 120, and the output of the compressor 120 is connected to the input of the condenser 130. Condenser 130 includes a water output and a liquid output. The liquid output of condenser 130 is connected to aeration and enthalpy compensation module 140. The liquid output of condenser 130 is also connected to aeration and enthalpy compensation module 140 through a first electronic expansion valve 150. The water output of condenser 130 and heat exchanger 110 is connected to the air conditioning water pump 200. The output of aeration and enthalpy compensation module 140 is connected to the input of compressor 120 and one end of a second electronic expansion valve 160. The other end of second electronic expansion valve 160 is connected to heat exchanger 110.

[0036] See also Figure 1 As shown, in one embodiment of the present invention, the refrigerant contained in heat exchanger 110 absorbs heat from the air and vaporizes, becoming a gas. Therefore, the temperature within heat exchanger 110 decreases due to the heat absorbed by the vaporized refrigerant. Heat exchanger 110 is an ideal device for liquid-to-liquid or liquid-to-gas heat exchange. Heat exchanger 110, for example, is a plate heat exchanger. Plate heat exchangers are highly efficient heat exchangers composed of a series of stacked corrugated metal sheets. They feature high heat exchange efficiency, minimal heat loss, a compact and lightweight structure, a small footprint, wide applicability, and a long lifespan. After vaporization, the refrigerant within heat exchanger 110 is transferred to compressor 120. Compressor 122 compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. Compressor 120 then transfers the high-temperature, high-pressure gaseous refrigerant to condenser 130. The high-temperature, high-pressure gaseous refrigerant is cooled in condenser 130 and converted into a liquid refrigerant at room temperature and high pressure. Since the high-pressure and high-temperature gaseous refrigerant is cooled and releases a large amount of heat, the temperature of the condenser 130 is high. The condenser 130 then transmits the liquid refrigerant to the gas-increasing enthalpy-supplying module 140.

[0037] See also Figure 1As shown, in one embodiment of the present invention, because the compressor 120 operates at a low evaporating temperature, problems such as increased suction specific volume, increased pressure ratio, and rapidly increased exhaust temperature may occur, resulting in a sharp decline in compressor 120 performance, insufficient heating capacity, and difficulty in operation. To address this problem, an air-injection and reheat-increasing module 140 is added. The air-injection and reheat-increasing module 140 compresses gas in the intermediate chamber of the compressor 120, increasing the exhaust volume, lowering the exhaust temperature, and improving the heating capacity of the compressor 120. Therefore, when liquid refrigerant is generated in the condenser 130, the liquid refrigerant is divided into two paths: a main path and an auxiliary path, and enters the air-injection and reheat-increasing module 140. The liquid refrigerant in the main circuit enters the refrigerant supply module 140 directly. The liquid refrigerant in the auxiliary circuit is throttled and depressurized by the liquid electronic expansion valve 150, where it is converted into a gas-liquid mixture and enters the refrigerant supply module 140. After the gas-liquid mixture in the auxiliary circuit absorbs heat and turns into a gas, the refrigerant supply module 140 transfers the gaseous refrigerant to the compressor 120, adding gas to the compressor 120. The refrigerant supply module 140 transfers the liquid refrigerant in the main circuit through the second electronic expansion valve 160 to the heat exchanger 110, where it vaporizes and absorbs heat, thus achieving refrigerant recycling. The low temperature of the heat exchanger 110 results in a low temperature in the surrounding air, so the heat exchanger 110 meets the cooling demand, while the condenser 130 meets the heating demand. Among them, the first electronic expansion valve 150 and the second electronic expansion valve 160 use the electrical signal generated by the adjusted parameter to control the voltage or current applied to the electronic expansion valve, thereby achieving the purpose of adjusting the liquid supply. Moreover, the electronic expansion valve has a wide liquid supply adjustment range and a fast adjustment response, which is suitable for occasions where the liquid load changes drastically or the operating conditions range is wide.

[0038] See also Figure 1 As shown, in one embodiment of the present invention, the air conditioning water pump 200 includes a cold water pump 210, a hot water pump 220, a first three-way valve TPV1, a second three-way valve TPV2, a third three-way valve TPV3, a second stop valve GV2, and a third stop valve GV3. The cold water pump 210 is connected to the heat exchanger 110. When the cold water pump 210 rotates, it drives the cold water flow through the low-temperature area of the heat exchanger 110 to obtain a cold water flow. The hot water pump 220 is connected to the condenser 130. When the hot water pump 220 rotates, it drives the hot water flow through the high-temperature area of the condenser 130 to obtain a hot water flow. One end of the first three-way valve TPV1 is connected to the hot water pump 220, one end of the second three-way valve TPV2 is connected to the cold water pump 210, and the third three-way valve TPV3 is connected to the heat exchanger 110, the cold water pump 210, and the second three-way valve TPV2.

[0039] See also Figure 1As shown, in one embodiment of the present invention, taking into account the cooling of the condenser 130 and the utilization rate of energy, water with a large specific heat capacity is used as a temperature carrier to transfer temperature in this application. Therefore, the cold water flow driven by the cold water pump 210 flows through the heat exchanger 110 with a low temperature and obtains a low-temperature water flow, and the hot water flow driven by the hot water pump 220 flows through the condenser 130 with a high temperature and obtains a high-temperature water flow. Among them, by adjusting the three-way valve, the first core 310 and the second core 320 in the air-conditioning box 300 can be made to exchange heat with the heat exchanger 110 or the condenser 130 at a certain water flow rate for cooling or heating.

[0040] See also Figure 1 As shown, in one embodiment of the present invention, the air conditioning box 300 includes a first core 310, a second core 320, a blower 330, and an air conditioning box body 340. The first core 310 and the second core 320 are arranged parallel to each other within the inner cavity of the air conditioning box body 340, and the first core 310 and the second core 320 are, for example, plate heat exchangers. The blower 330 is also arranged in the air conditioning box body 340, and the air outlet of the blower 330 faces the first core 310 and the second core 320. The first core 310 and the second core 320 are connected to the hot water pump 220 via a first three-way valve TPV1. The hot water flow driven by the hot water pump 220 flows through the first core 310 and the second core 320 through the first three-way valve TPV1. The first core 310 and the second core 320 are connected to the cold water pump 210 via a second three-way valve TPV2. The cold water flow driven by the cold water pump 210 flows through the first core 310 and the second core 320 via the second three-way valve TPV2. One end of the first core 310 is connected to the cold water pump 210 via a second stop valve GV2, and the other end of the first core 310 is connected to the heat exchanger 110 via a third stop valve GV3.

[0041] See also Figure 1 As shown, in one embodiment of the present invention, the hot and cold water flows are exchanged through the first core 310 and the second core 320, thereby cooling or heating the interiors of the first core 310 and the second core 320. The cooled or heated interiors of the first core 310 and the second core 320 cool or heat the surrounding air, and the blower 330 blows the cool or hot air, thereby achieving a cooling or heating effect at the outlet of the air conditioning unit 300.

[0042] See also Figure 1As shown, in one embodiment of the present invention, the motor circuit 400 includes a drive motor 410, a drive motor water pump 420, a radiator 430, a kettle 440, a multi-way valve 450, and a fourth shut-off valve GV4. The multi-way valve 450 is, for example, a nine-way valve. One end of the drive motor 410 is connected to port P1 of the multi-way valve 450, and the other end is connected to one end of the drive motor water pump 420. The drive motor 410 is also connected to the condenser 130 via the first shut-off valve GV1. The other end of the drive motor water pump 420 is connected to the radiator 430, the kettle 440, and port P9 of the multi-way valve 450. The kettle 440 is connected to one end of the fourth shut-off valve GV4, the other end of which is connected to one end of the radiator 430. The other end of the radiator 430 is connected to port P7 of the multi-way valve 450. Port P5 of the multi-way valve 450 is connected to the cooling water pump 210. Port P3 of the multi-way valve 450 is connected to the heat exchanger 110 via the third three-way valve TPV3. Port P8 of the multi-way valve 450 is connected to the heat exchange water pump 220 via the first three-way valve TPV1. Port P2 of the multi-way valve 450 is connected to one end of the one-way valve CKV and the condenser 130, while the other end of the one-way valve CKV is connected to the heat exchange water pump 220 via the first three-way valve TPV1. The kettle 440 is used to add coolant, such as water, and to vent the air conditioning system. It drives the motor water pump 420, which moves the coolant within the kettle 440 and draws it into the motor circuit 400.

[0043] See also Figure 1 As shown, in one embodiment of the present invention, the battery circuit 500 includes an onboard battery pack 510 and a battery water pump 520. One end of the battery water pump 520 is connected to port P6 of the multi-way valve 450, and the other end is connected to one end of the onboard battery pack 510. The other end of the onboard battery pack 510 is connected to port P4 of the multi-way valve 450.

[0044] See also Figure 1 and Figure 2As shown, in one embodiment of the present invention, for example, the air conditioning system provided herein can be used to achieve simultaneous cooling of the first core 310 and the second core 320. When the air conditioning system is turned on, the throttling effect of the second electronic expansion valve 160 causes the liquid refrigerant, such as R290, in the heat exchanger 110 to vaporize. The refrigerant absorbs a large amount of heat from the heat exchanger 110, causing the temperature of the heat exchanger 110 to drop. The gaseous refrigerant, such as R290, is then transferred to the compressor 120, which compresses the gaseous refrigerant to produce a high-temperature, high-pressure gaseous refrigerant. The compressor 120 then transfers the high-temperature, high-pressure gaseous refrigerant to the condenser 130 for cooling. As the gaseous refrigerant liquefies, it releases a large amount of heat, causing the temperature within the condenser 130 to rise. At this point, the cold water pump 210 is turned on, driving the cold water flow through the low-temperature heat exchanger 110, converting the hot water flow into cold water. The second shut-off valve GV2 and the third shut-off valve GV3 are then opened. The port of the first three-way valve TPV1 connected to the first core 310 is then closed, and the port of the third three-way valve TPV3 connected to the heat exchanger 110 is closed. By adjusting the opening of the second three-way valve TPV2, the first and second cores 310, 320 in the air conditioning unit 300 exchange heat with the heat exchanger 110 at a certain water flow rate, cooling the air. The cold water flows through the first and second cores 310, 320. The air blown by the blower 330, also located in the air conditioning unit body 340, then exchanges heat with the cold water flowing in the first and second cores 310, 320, achieving cooling. The cold water flow is driven by the cold water pump 210, first connected to the second core 320 through the second three-way valve TPV2, and then the cold water flows through the port connected to the second three-way valve TPV2 and the second stop valve GV2, and passes through the first core 310 through the second stop valve GV2, and then the cold water flows through the first core 310 and is connected to the heat exchanger 110 through the third stop valve GV3.

[0045] See also Figure 2 As shown, in one embodiment of the present invention, to prevent damage to the condenser 130 due to excessive temperatures, the motor circuit 400 is used to cool the condenser 130. At this point, ports P1 and P2 of the multi-way valve 450 are connected, and ports P7 and P8 are connected, and the heat exchange water pump 220 is turned on. The heat exchange water flow driven by the rotation of the heat exchange water pump 220 passes through the condenser 130, becoming a hot water flow. The hot water then enters port P8 of the multi-way valve 450 and exits port P7. The hot water then passes through the radiator 430, which cools the hot water flow to produce a normal temperature water flow. The normal temperature water then passes through the drive motor water pump 420, the drive motor, ports P1 and P2 of the multi-way valve 450, and finally enters the condenser 130. This achieves cooling of the condenser 130.

[0046] See also Figure 3 As shown, in another embodiment of the present invention, for example, the air conditioning system provided herein can be used to achieve simultaneous heating of the first core 310 and the second core 320. When the air conditioning system is turned on, the gaseous refrigerant in the condenser 130 liquefies, releasing a large amount of heat, resulting in a relatively high temperature at the condenser 130. At this point, the hot water pump 220 is turned on. The hot water flow driven by the hot water pump 220 passes through the condenser 130 and becomes hot water. The second stop valve GV2 and the third stop valve GV3 are then opened. After the opening of the first three-way valve TPV1 is adjusted, a portion of the hot water flows through the first core 310 and returns to the condenser 130. Another portion of the hot water flows through the opened second stop valve GV2 and then through the second three-way valve TPV2 to the second core 320. By adjusting the opening of the second three-way valve TPV2, the second core 320 exchanges heat with the condenser 130 at a certain flow rate, raising its temperature. The hot water then flows back to the condenser 130 through the third stop valve GV3. Then, the wind blown by the blower 330 in the air conditioning box body 340 exchanges heat with the hot water flow in the first core 310 and the second core 320 to achieve heating.

[0047] See also Figure 1 and Figure 3 As shown, in another embodiment of the present invention, if the outlet water temperature of the water flow output end of the heat exchanger 110 is lower than the ambient temperature, ports P1 and P3 of the multi-way valve 450 are connected, and ports P5 and P7 of the multi-way valve 450 are connected. Then, the cold water pump 210 is turned on, the radiator 430 absorbs heat from the outside air, and then the temperature of the circuit loop 400 is replenished to the heat exchanger 110. If the outlet water temperature of the water flow output end of the heat exchanger 110 is higher than the ambient temperature, ports P1 and P3 of the multi-way valve 450 are connected, and ports P5 and P9 of the multi-way valve 450 are connected. Then, the cold water pump 210 is turned on, the radiator 430 is bypassed, and then the temperature of the circuit loop 400 is replenished to the heat exchanger 110, preventing heat from being lost to the outside air, thereby improving the vehicle's endurance in cold environments.

[0048] See also Figure 1 and Figure 4As shown, in another embodiment of the present invention, when using the air conditioning system provided herein to achieve heating of the first core 310 and cooling of the second core 320, because the temperature in the heat exchanger 110 is low and the temperature in the condenser 130 is high, the cold water pump 210 and the hot water pump 220 are turned on, while the second stop valve GV2 and the third stop valve GV3 are closed. By adjusting the opening of the first three-way valve TPV1, the first core 310 in the air conditioning box body 340 exchanges heat with the condenser 130 at a certain water flow rate to increase the temperature. By adjusting the opening of the second three-way valve TPV2, the second core 320 in the air conditioning box body 340 exchanges heat with the heat exchanger 110 at a certain water flow rate to reduce the temperature. Then, the air blown by the blower 330 in the air conditioning box body 340 exchanges heat with the cold water flow or hot water flow in the first core 310 and the second core 320 to achieve heating and cooling. If the heat dissipation of the condenser 130 in the air-conditioning system is insufficient in a high temperature environment, ports P1 and P2 of the multi-way valve 450 are connected, and ports P7 and P8 of the multi-way valve 450 are connected, and then the heat exchange water pump 220 is turned on to cool the condenser 130 through the radiator 430 in the motor circuit 400.

[0049] See also Figure 1 and Figure 4 As shown, in another embodiment of the present invention, if the refrigerant inside the heat exchanger 110 in the air-conditioning system absorbs insufficient heat when vaporizing in a low-temperature environment, and the outlet water temperature of the water flow output end of the heat exchanger 110 is lower than the ambient temperature, then the port P1 and port P3 of the multi-way valve 450 are connected, and the port P5 and port P7 of the multi-way valve 450 are connected, and then the cold water pump is turned on, the radiator 430 absorbs heat from the outside air, and then the heat absorbed by the radiator 430 is transferred to the heat exchanger 110 through the circuit loop 400 with water as a carrier, so as to supplement heat for the heat exchanger 110, thereby enhancing the heating capacity of the condenser 130. If, in a low-temperature environment, the refrigerant in the heat exchanger 110 of the air conditioning system absorbs insufficient heat during vaporization, and the outlet water temperature of the water output end of the heat exchanger 110 is higher than the ambient temperature, then the ports P1 and P3 of the multi-way valve 450 are connected, and the ports P5 and P9 of the multi-way valve 450 are connected, and then the cold water pump 210 is turned on to transmit the outlet water temperature of the water output end of the heat exchanger 110 to the heat exchanger 110 through the motor circuit 400 to prevent heat from being lost to the outside air. In this case, the radiator 430 is bypassed. The first core 310 generates heat and the second core 320 generates cooling, which can meet the dehumidification requirements at various temperatures.

[0050] See also Figure 1 and Figure 5As shown, in another embodiment of the present invention, the air conditioning water pump 200 utilizes the ports of the multi-way valve 450 to flexibly distribute the heat between the heat exchanger 110, the condenser 130, the onboard battery pack 510, and the motor circuit 400, thereby improving heat utilization. For example, this can achieve cooling of the onboard battery pack 510 and the air conditioner. The cold water pump 210 and the battery water pump 520 are turned on, and ports P5 and P6 of the multi-way valve 450 are connected, while ports P3 and P4 of the multi-way valve 450 are connected. Port P5 of the multi-way valve 450 is connected to the cold water pump 210, port P6 of the multi-way valve 450 is connected to the battery water pump 520, one end of the onboard battery pack 510 is connected to port P4 of the multi-way valve 450, port P3 of the multi-way valve 450 is connected to one port of the third three-way valve TPV3, the other port of the third three-way valve TPV3 is connected to the heat exchanger 110, and the last port of the third three-way valve TPV3 is disconnected. By adjusting the opening of the third three-way valve TPV3, the battery circuit 500 can exchange heat with the heat exchanger 110 at a certain water flow rate to cool down. Among them, the second stop valve GV2 and the third stop valve GV3 are closed, and the cold water flow driven by the cold water pump 210 flows through the second three-way valve TPV2 and the second core 320. And by adjusting the opening of the second three-way valve TPV2, the second core 320 can exchange heat with the heat exchanger 110 at a certain water flow rate to cool down. In a low-temperature environment, if the temperature of the on-board battery pack 510 is high, the heat of the on-board battery pack 510 can also be transferred to the heat exchanger 110 through the battery circuit 500. If the water flow allocated to the battery circuit 500 by the heat exchanger 110 is 0, the on-board battery pack 510 continues to heat.

[0051] See also Figure 1 and Figure 5As shown, in another embodiment of the present invention, when the drive motor water pump 420 and the heat exchange water pump 220 are turned on, ports P7 and P8 of the multi-way valve 450 are connected, and ports P1 and P2 of the multi-way valve 450 are connected. By adjusting the opening of the first three-way valve TPV1, the water flow rate of the hot water in the condenser 130 to the motor circuit 400 and the first core 310 can be distributed, so that the motor circuit 400 and the first core 310 exchange heat with the condenser 130 at a certain water flow rate to increase the temperature, thereby achieving the cooling of the condenser 130 and the air conditioning and heating requirements. If the water flow allocated by the condenser 130 to the motor circuit 400 is 0, the drive motor 410 is cooled solely through the circuit where the one-way valve CKV is located. That is, the hot water flow driven by the drive motor water pump 420 passes through ports P1 and P2 of the multi-way valve 450, then passes through the one-way valve CKV and through ports P8 and P7 of the multi-way valve 450 to the radiator 430. The radiator 430 dissipates the heat from the hot water flow, thereby cooling the drive motor 410. If heat storage in the motor circuit 400 is required or active heating by the drive motor 410 is required for air conditioning and heating, ports P2 and P9 of the multi-way valve 450 are connected, and the radiator 430 is bypassed to prevent heat loss to the outside air.

[0052] See also Figure 1 and Figure 6 As shown, in another embodiment of the present invention, for example, the vehicle-mounted battery pack 510 and the air conditioner are heated. The heat exchange water pump 220 and the battery water pump 520 are turned on, and the ports P2 and P4 of the multi-way valve 450 are connected, and the ports P6 and P8 of the multi-way valve 450 are connected. The port P8 of the multi-way valve 450 is connected to the heat exchange water pump 220 through the first three-way valve TPV1, and the port P6 of the multi-way valve 450 is connected to the battery water pump 520. One end of the vehicle-mounted battery pack 510 is connected to the port P4 of the multi-way valve 450, and the port P2 of the multi-way valve 450 is connected to the condenser 130. One port of the first three-way valve TPV1 is connected to the heat exchanger 110, and the other port of the first three-way valve TPV1 is connected to the first core 310. By adjusting the opening of the first three-way valve TPV1, the battery circuit 500 and first core 310 exchange heat with the condenser 130 at a certain water flow rate, achieving heating and air conditioning for the vehicle battery pack 510. If the water flow allocated to the battery circuit 500 by the condenser 130 is zero, the vehicle battery pack 510 is heated using the circuit containing the one-way valve CKV.

[0053] See also Figure 1 and Figure 6As shown, in another embodiment of the present invention, ports P5 and P7 of the multi-way valve 450 are connected, and ports P1 and P3 of the multi-way valve 450 are connected. When the drive motor water pump 520 and the cold water pump 210 are turned on, the opening of the third three-way valve TPV3 can be adjusted to distribute the water flow rate of the cold water in the heat exchanger 110 to the motor circuit 400 and the second core 320. This allows the motor circuit 400 and the second core 320 to exchange heat and cool with the heat exchanger 110 at a certain water flow rate, thereby achieving heat replenishment from the motor circuit 400 to the heat exchanger 110 and air conditioning. If the water flow allocated by the heat exchanger 110 to the motor circuit 400 is zero, the drive motor 410 is cooled solely by the radiator 430. If the water temperature at the drive motor 410 is lower than the ambient temperature, ports P5 and P7 of the multi-way valve 450 are connected, and the radiator 430 absorbs heat from the outside air and transfers the heat to the heat exchanger 110 through the motor circuit 400. If the water temperature at the drive motor 410 is higher than the ambient temperature, the port P5 and the port P9 of the multi-way valve 450 are connected, and the radiator 430 is bypassed to prevent heat from being dissipated into the outside air.

[0054] See also Figure 1 and Figure 7 As shown, in another embodiment of the present invention, if the battery circuit 500, motor circuit 400, heat exchanger 110, and condenser 130 are all connected, it can be used to maintain temperature balance between different circuits when there is no significant cooling or heating demand in the air conditioning system circuits during spring and autumn. If the air conditioning system needs to dissipate heat, ports P5 and P7 of the multi-way valve 450 are connected, and heat is dissipated by radiator 430. If the air conditioning system needs to store heat, ports P5 and P9 of the multi-way valve 450 are connected, and radiator 430 is bypassed to prevent heat from being lost to the outside air.

[0055] In summary, the present invention improves the problem of insufficient heating efficiency in low-temperature environments caused by heat pump technology using R134 or R1234yf as a refrigerant. By replacing R134 or R1234yf with R290 refrigerant, it not only complies with national plans and protects the environment, but also can achieve rapid heating in low-temperature environments such as -30°C, meeting the heating needs of the entire vehicle. Furthermore, the refrigerant does not enter the passenger compartment, and the air conditioning refrigeration and heating circuits are centrally arranged, reducing the amount of refrigerant to be added and ensuring the safety of the vehicle air conditioning system. Furthermore, dual-core cooling and dual-core heating, as well as second-core cooling and first-core heating, are achieved through the first and second cores, thereby meeting the air conditioning heating and heating needs under various operating conditions and improving the cooling and heating effects of the vehicle air conditioner. Therefore, the present invention effectively overcomes some practical problems in the prior art and has high utilization value and practical significance.

[0056] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A vehicle air conditioning system, characterized in that: include: An air conditioning circuit, comprising a heat exchanger, an air supply and enthalpy increase module, and a condenser, wherein the output end of the condenser is connected to the input end of the air supply and enthalpy increase module, and the output end of the air supply and enthalpy increase module is connected to the input end of the heat exchanger; The air conditioning water pump includes a cold water pump and a hot water pump, wherein the cold water pump is connected to the heat exchanger and when the cold water pump rotates, the cold water flows through the heat exchanger; the hot water pump is connected to the condenser and when the hot water pump rotates, the hot water flows through the condenser; An air conditioning box, comprising a first core and a second core, wherein the first core and the second core are connected to the hot water exchange pump and the cold water exchange pump, and the cold water exchange flow or the hot water exchange flow passes through the first core and the second core; and a motor circuit, comprising a multi-way valve and a drive motor, wherein the drive motor is connected to a port of the multi-way valve and is connected to the air conditioning circuit through communication with the port of the multi-way valve; Among them, one end of the first core is connected to the cold water pump and the second core pipeline through the second stop valve and the second three-way valve, and the other end of the first core is connected to the heat exchanger and the second core pipeline through the third stop valve; by adjusting the second three-way valve, the second stop valve and the third stop valve, different heating / cooling working conditions can be achieved.

2. The vehicle air conditioning system according to claim 1, characterized in that: The air conditioning circuit further includes a first electronic expansion valve, and the condenser is connected to the air supply and enthalpy increase module via the first electronic expansion valve.

3. The vehicle air conditioning system according to claim 1, characterized in that: The air-conditioning water pump further includes a first three-way valve, which is connected to the heat exchange water pump.

4. The vehicle air conditioning system according to claim 1, characterized in that: The air-conditioning water pump further includes a second three-way valve, and the cooling water pump is connected to the second core through the second three-way valve.

5. The vehicle air conditioning system according to claim 1, characterized in that: The air conditioning box includes an air conditioning box body, and the first core and the second core are arranged in an inner cavity of the air conditioning box body.

6. The vehicle air conditioning system according to claim 1, characterized in that: The motor circuit includes a drive motor water pump, one end of which is connected to the drive motor.

7. The vehicle air conditioning system according to claim 6, characterized in that: The motor circuit includes a radiator, one end of the radiator is connected to the driving motor water pump, and the other end of the radiator is connected to the port of the multi-way valve.

8. The vehicle air conditioning system according to claim 1, characterized in that: The vehicle air conditioning system further includes a battery circuit, the battery circuit includes a battery water pump, and one end of the battery water pump is connected to the port of the multi-way valve.

9. The vehicle air conditioning system according to claim 8, characterized in that: The battery circuit further includes an on-board battery pack, one end of which is connected to the battery water pump, and the other end of which is connected to the port of the multi-way valve.

10. A vehicle, characterized in that: The vehicle includes the vehicle air conditioning system according to any one of claims 1 to 9.

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