Air conditioning system

Abstract

The utility model discloses an air-conditioning system, which comprises a compressor, an outdoor heat exchanger, an air conditioner and an air conditioner, one end of the first heat exchanger is connected with one end of the outdoor heat exchanger; the four-way valve comprises a first connector, a second connector, a third connector and a fourth connector, the first connector is connected with the outlet, the second connector is connected with the other end of the outdoor heat exchanger, the third connector is connected with the other end of the first heat exchanger, and the fourth connector is connected with an inlet of the compressor; one end of the first throttling element is connected with one end of the outdoor heat exchanger and one end of the first heat exchanger; and one end of the second heat exchanger is connected with the other end of the first throttling element, and the other end of the second heat exchanger is connected with the inlet. The air conditioning system can refrigerate the battery and the energy storage converter at different temperatures, and can refrigerate the energy storage converter while heating the battery, so that the energy storage converter is kept running at a low temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an air conditioning system. Background Art

[0002] The air conditioning system in the related art generally includes a compressor, an outdoor heat exchanger and a battery heat exchanger. The refrigerant can exchange heat with the outdoor air through the outdoor heat exchanger and can exchange heat with the battery through the battery heat exchanger.

[0003] Moreover, the air conditioning system is also provided with a four-way valve. By adjusting the state of the four-way valve, the flow direction of the refrigerant can be changed, so that the battery heat exchanger can act as an evaporator to cool the battery, or the battery heat exchanger can act as a condenser to heat the battery.

[0004] However, due to the unreasonable structural setting of the air conditioning system in the related art, the air conditioning system cannot cool the battery and the power conversion system (PCS) at different temperatures at the same time, and cannot cool the power conversion system when heating the battery. Summary of the Utility Model

[0005] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide an air conditioning system, which can cool the battery and the power conversion system at different temperatures, and can cool the power conversion system while heating the battery, so that the power conversion system can operate at a low temperature.

[0006] To achieve the above object, an air conditioning system is proposed according to an embodiment of the present invention, including: a compressor having an inlet and an outlet; an outdoor heat exchanger for heat exchange with outdoor air; a first heat exchanger for heat exchange with a battery, one end of the first heat exchanger is connected to one end of the outdoor heat exchanger, and the compressor, the outdoor heat exchanger and the first heat exchanger are connected to form a refrigerant circuit; the air conditioning system further includes: a four-way valve including a first interface, a second interface, a third interface and a fourth interface, the first interface is connected to the outlet, the second interface is connected to the other end of the outdoor heat exchanger, the third interface is connected to the other end of the first heat exchanger, and the fourth interface is connected to the inlet of the compressor; the first interface is selectively communicated with one of the second interface and the third interface, and the fourth interface is selectively communicated with the other of the second interface and the third interface; wherein, the air conditioning system further includes: a first throttling element, one end of the first throttling element is respectively connected to the one end of the outdoor heat exchanger and the one end of the first heat exchanger; a second heat exchanger for cooling the energy storage converter, one end of the second heat exchanger is connected to the other end of the first throttling element to selectively communicate with the one end of the outdoor heat exchanger or the one end of the first heat exchanger, and the other end of the second heat exchanger is connected to the inlet.

[0007] Thus, the air conditioning system according to the embodiment of the present invention can achieve refrigerating the battery and the energy storage converter at different temperatures, and can achieve refrigerating the energy storage converter while heating the battery, so that the energy storage converter can operate at a low temperature.

[0008] According to some embodiments of the present invention, the air conditioning system further includes: a third heat exchanger provided with a first heat exchange channel and a second heat exchange channel, one end of the first heat exchange channel is connected to the other end of the first throttling element, and the other end of the first heat exchange channel is connected to the one end of the second heat exchanger, one end of the second heat exchange channel is connected to the one end of the outdoor heat exchanger, and the other end of the second heat exchange channel is connected to the one end of the first heat exchanger.

[0009] According to some embodiments of the present invention, the air conditioning system further includes: a second throttling element, one end of the second throttling element is connected to the other end of the second heat exchanger, and the other end of the second throttling element is connected to the inlet.

[0010] According to some embodiments of the present utility model, the second heat exchanger is a plate heat exchanger, and the second heat exchanger is provided with a third heat exchange channel and a fourth heat exchange channel. One end of the third heat exchange channel is connected to the other end of the first throttling element, and the other end of the third heat exchange channel is connected to the inlet. One end of the fourth heat exchange channel is connected to the one end of the outdoor heat exchanger, and the other end of the fourth heat exchange channel is respectively connected to the one end of the first heat exchanger and the one end of the first throttling element.

[0011] According to some embodiments of the present utility model, there are a plurality of the first heat exchangers. One ends of the plurality of the first heat exchangers are respectively connected to the one end of the outdoor heat exchanger, and the other ends of the first heat exchangers are respectively connected to the third interface.

[0012] According to some embodiments of the present utility model, the air conditioning system further includes: a plurality of third throttling elements. The plurality of third throttling elements correspond to the plurality of the first heat exchangers one by one. One end of the third throttling element is connected to the one end of the outdoor heat exchanger, and the other end of the third throttling element is connected to the one end of the first heat exchanger.

[0013] According to some embodiments of the present utility model, the air conditioning system further includes: a fourth throttling element. One end of the fourth throttling element is respectively connected to the one end of the first throttling element and the one end of the third throttling element, and the other end of the third throttling element is connected to the one end of the outdoor heat exchanger.

[0014] According to some embodiments of the present utility model, the air conditioning system further includes: a radiator. One end of the radiator is respectively connected to the one end of the first heat exchanger and the one end of the second heat exchanger, and the other end of the radiator is connected to the one end of the outdoor heat exchanger.

[0015] According to some embodiments of the present utility model, the air conditioning system further includes: a gas-liquid separator. One end of the gas-liquid separator is respectively connected to the fourth interface and the other end of the second heat exchanger, and the other end of the gas-liquid separator is connected to the inlet; an oil separator. One end of the oil separator is connected to the outlet, the other end of the oil separator is connected to the first interface, and the oil return port of the oil separator is connected to the inlet through a capillary tube.

[0016] An air conditioning system according to an embodiment of the present invention includes: a compressor having an inlet and an outlet; an outdoor heat exchanger for heat exchange with outdoor air; a first branch, one end of the first branch is connected to one end of the outdoor heat exchanger, and the compressor, the outdoor heat exchanger and the first branch form a refrigerant circuit; a second branch, one end of the second branch is respectively connected to the one end of the outdoor heat exchanger and the one end of the first branch, and the other end of the second branch is connected to the inlet; the air conditioning system further includes: a four-way valve including a first interface, a second interface, a third interface and a fourth interface, the first interface is connected to the outlet, the second interface is connected to the other end of the outdoor heat exchanger, the third interface is connected to the other end of the first branch, and the fourth interface is connected to the inlet; the first interface is selectively communicated with one of the second interface and the third interface, and the fourth interface is selectively communicated with the other of the second interface and the third interface; wherein, the air conditioning system further includes: a first heat exchanger disposed on the first branch and for heat exchange with a battery; a second heat exchanger disposed on the second branch and for cooling an energy storage converter; a first throttling element disposed on the second branch and between the one end of the second branch and the second heat exchanger.

[0017] Thus, the air conditioning system according to the embodiment of the present invention can cool the battery and the energy storage converter at different temperatures, and can cool the energy storage converter while heating the battery, so that the energy storage converter can operate at a low temperature.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of an air conditioning system according to the first embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the air conditioning system according to the first embodiment of the present invention when cooling the battery;

[0022] Figure 3 is a schematic diagram of the air conditioning system according to the first embodiment of the present invention when heating the battery;

[0023] Figure 4 It is the schematic diagram of the air conditioning system for battery cooling according to the second embodiment of the present utility model;

[0024] Figure 5 It is the schematic diagram of the air conditioning system for battery heating according to the second embodiment of the present utility model;

[0025] Figure 6 It is the schematic diagram of the air conditioning system according to the third embodiment of the present utility model;

[0026] Figure 7 It is the schematic diagram of the air conditioning system for battery cooling according to the third embodiment of the present utility model;

[0027] Figure 8 It is the schematic diagram of the air conditioning system for battery heating according to the third embodiment of the present utility model;

[0028] Figure 9 It is the schematic diagram of the air conditioning system for battery cooling according to the fourth embodiment of the present utility model;

[0029] Figure 10 It is the schematic diagram of the air conditioning system for battery heating according to the fourth embodiment of the present utility model.

[0030] Reference numerals:

[0031] 1. Air conditioning system;

[0032] 10. Outdoor heat exchanger; 20. First branch; 30. Second branch;

[0033] 100. Compressor; 110. Inlet; 120. Outlet;

[0034] 200. First heat exchanger;

[0035] 300. Four-way valve; 310. First interface; 320. Second interface; 330. Third interface; 340. Fourth interface;

[0036] 410. First throttling element; 420. Second throttling element; 430. Third throttling element; 440. Fourth throttling element;

[0037] 500. Second heat exchanger; 510. Third heat exchange channel; 520. Fourth heat exchange channel;

[0038] 600. Third heat exchanger; 610. First heat exchange channel; 620. Second heat exchange channel;

[0039] 700. Radiator; 800. Gas-liquid separator; 900. Oil separator; 910. Capillary tube. Detailed implementation manners

[0040] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0042] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0043] In the description of the present utility model, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more.

[0044] An air conditioning system 1 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0045] As Figures 1 - 10 shown, the air conditioning system 1 according to an embodiment of the present utility model may include a compressor 100. The compressor 100 has an inlet 110 and an outlet 120. The high-temperature and high-pressure refrigerant can be discharged through the outlet 120 of the compressor 100 and then flow back into the compressor 100 through the inlet 110 after completing the heating cycle or the cooling cycle.

[0046] The air conditioning system 1 may include an outdoor heat exchanger 10 for heat exchange with outdoor air. When the air conditioning system 1 cools the battery, the outdoor heat exchanger 10 can act as a condenser, and the refrigerant can release heat to the outside through the outdoor heat exchanger 10, so that the high-temperature refrigerant can become a medium-temperature or low-temperature refrigerant, and then the battery can be cooled. When the air conditioning system 1 heats the battery, the outdoor heat exchanger 10 can act as an evaporator, and then the refrigerant can absorb heat from the outdoor air through the outdoor heat exchanger 10, so that the refrigerant can be heated and then flow back into the compressor 100.

[0047] The air conditioning system 1 may include a first heat exchanger 200, which is used for heat exchange with the battery. That is, the first heat exchanger 200 can be a battery heat exchanger. One end of the first heat exchanger 200 is connected to one end of the outdoor heat exchanger 10, and the compressor 100, the outdoor heat exchanger 10, and the first heat exchanger 200 are connected to form a refrigerant circuit.

[0048] In this way, when the air conditioning system 1 cools the battery, the refrigerant discharged from the outlet 120 of the compressor 100 can flow through the outdoor heat exchanger 10 and the indoor heat exchanger in sequence. Furthermore, heat can be released to the outside through the outdoor heat exchanger 10, and then the heat of the battery can be absorbed through the first heat exchanger 200 to cool the battery using the first heat exchanger 200. Finally, the refrigerant flows back to the compressor 100 through the inlet 110 of the compressor 100.

[0049] When the air conditioning system 1 heats the battery, the refrigerant discharged from the outlet 120 of the compressor 100 can flow through the first heat exchanger 200 and the outdoor heat exchanger 10 in sequence. Furthermore, heat can be released to the battery through the first heat exchanger 200 to heat the battery, and then the heat of the outside air can be absorbed through the outdoor heat exchanger 10. Finally, the refrigerant flows back to the compressor 100 through the inlet 110 of the compressor 100.

[0050] The air conditioning system 1 may further include a four-way valve 300. The four-way valve 300 may include a first interface 310, and the first interface 310 is connected to the outlet 120. In this way, the refrigerant flowing out of the outlet 120 of the compressor 100 can flow to the first interface 310.

[0051] The four-way valve 300 may include a second interface 320, and the second interface 320 is connected to the other end of the outdoor heat exchanger 10. In this way, the refrigerant flowing out of the second interface 320 can flow to the outdoor heat exchanger 10, or the refrigerant flowing out of the outdoor heat exchanger 10 can flow to the second interface 320.

[0052] The four-way valve 300 may further include a third interface 330, and the third interface 330 is connected to the other end of the first heat exchanger 200. In this way, the refrigerant can flow into the first heat exchanger 200 through the third interface 330, or the refrigerant flowing out of the first heat exchanger 200 can flow to the third interface 330.

[0053] The four-way valve 300 may further include a fourth interface 340, and the fourth interface 340 is connected to the inlet 110 of the compressor 100. In this way, the refrigerant can flow from the fourth interface 340 to the inlet 110 of the compressor 100 and then flow back into the compressor 100.

[0054] Specifically, the first interface 310 is selectively connected to one of the second interface 320 and the third interface 330, and the fourth interface 340 is selectively connected to the other of the second interface 320 and the third interface 330.

[0055] For example, the first interface 310 can be connected to the second interface 320, and the third interface 330 is connected to the fourth interface 340; or the first interface 310 can be connected to the third interface 330, and the second interface 320 is connected to the fourth interface 340. In this way, by controlling the state of the four-way valve 300, the flow direction of the refrigerant within the four-way valve 300 can be changed, and further, the flow direction of the refrigerant in the air-conditioning system 1 can be adjusted.

[0056] Thus, when the air-conditioning system 1 needs to cool the battery, as Figure 2 and Figure 7 shown, the first interface 310 can be connected to the second interface 320, and the third interface 330 and the fourth interface 340 are connected. At this time, the high-temperature refrigerant can flow from the outlet 120 of the compressor 100 to the first interface 310, then flow from the second interface 320 to the outdoor heat exchanger 10, and release heat to the outside through the outdoor heat exchanger 10 to form a low-temperature refrigerant. The low-temperature refrigerant then flows to the first heat exchanger 200 and exchanges heat with the battery through the first heat exchanger 200 to reduce the temperature of the battery, achieving cooling of the battery. Finally, the refrigerant flows out of the first heat exchanger 200 and flows back to the compressor 100 through the third interface 330 and the fourth interface 340, realizing the refrigeration cycle for the battery.

[0057] When the air conditioner needs to heat the battery, as Figure 3 and Figure 8 shown, the first interface 310 can be connected to the third interface 330, and the second interface 320 and the fourth interface 340 are connected. At this time, the high-temperature refrigerant can flow from the outlet 120 of the compressor 100 to the first interface 310, then flow from the third interface 330 to the first heat exchanger 200, and release heat to the battery through the first heat exchanger 200 to heat the battery. Then the refrigerant flows out of the first heat exchanger 200 and flows to the outdoor heat exchanger 10 to absorb heat from the outside air through the outdoor heat exchanger 10. Finally, the refrigerant flows out of the outdoor heat exchanger 10 and flows back to the compressor 100 through the second interface 320 and the fourth interface 340, realizing the heating cycle for the battery.

[0058] Wherein, the air-conditioning system 1 may further include a first throttling element 410. One end of the first throttling element 410 is respectively connected to one end of the outdoor heat exchanger 10 and one end of the first heat exchanger 200. For example, the first throttling element 410 can be a throttle valve. When the refrigerant flows from the outdoor heat exchanger 10 or the first heat exchanger 200 to the first throttling element 410, the first throttling element 410 can throttle, depressurize, and cool the refrigerant.

[0059] The air conditioning system 1 may further include a second heat exchanger 500 for cooling the energy storage converter. One end of the second heat exchanger 500 is connected to the other end of the first throttling element 410 to selectively communicate with one end of the outdoor heat exchanger 10 or one end of the first heat exchanger 200, and the other end of the second heat exchanger 500 is connected to the inlet 110.

[0060] That is to say, one end of the second heat exchanger 500 can communicate with one end of the outdoor heat exchanger 10 through the first throttling element 410, or one end of the second heat exchanger 500 can communicate with one end of the first heat exchanger 200 through the first throttling element 410.

[0061] Thus, when the air conditioning system 1 needs to cool the battery and the energy storage converter simultaneously, one end of the second heat exchanger 500 can be connected to one end of the outdoor heat exchanger 10 through the first throttling element 410. In this way, the refrigerant flowing out of the outdoor heat exchanger 10 can be divided into two parts. One part of the refrigerant flows to the first heat exchanger 200 and absorbs the heat of the battery through the first heat exchanger 200 to cool the battery, and the other part of the refrigerant can flow to the second heat exchanger 500 after throttling through the first throttling element 410. Furthermore, it can absorb the heat of the energy storage converter through the second heat exchanger 500 to cool the energy storage converter. And by adjusting the opening degree of the first throttling element 410, the evaporation temperature of the refrigerant flowing through the second heat exchanger 500 can be adjusted. Furthermore, the evaporation temperatures of the refrigerant in the first heat exchanger 200 and the second heat exchanger 500 can be made different, so as to realize cooling the battery and the energy storage converter at different evaporation temperatures, and the adaptability is higher.

[0062] When the air conditioning system 1 needs to heat the battery, one end of the second heat exchanger 500 can be connected to one end of the first heat exchanger 200 through the first throttling element 410. In this way, the refrigerant flowing out of the first heat exchanger 200 can be divided into two parts. One part of the refrigerant flows to the outdoor heat exchanger 10 to absorb the heat of the outdoor air through the outdoor heat exchanger 10 and then flows back to the compressor 100, and the other part of the refrigerant can flow to the second heat exchanger 500 after throttling through the first throttling element 410. Furthermore, it can absorb the heat of the energy storage converter through the second heat exchanger 500 to cool the energy storage converter. Thus, the air conditioning system 1 can realize heating the battery while cooling the energy storage converter to ensure that the energy storage converter can always operate at a low temperature, and the operation reliability is higher.

[0063] In this way, the air conditioning system 1 according to the embodiment of the present invention can realize cooling the battery and the energy storage converter at different temperatures, and can realize cooling the energy storage converter while heating the battery, so that the energy storage converter can be maintained at a low temperature for operation.

[0064] It should be noted that in some other embodiments, the first heat exchanger 200 is not limited to cooling or heating the battery, that is, the first heat exchanger 200 can also cool or heat other components, and the second heat exchanger 500 is not limited to cooling the energy storage converter, that is, the second heat exchanger 500 can also be used to cool other electrical components.

[0065] In some specific embodiments of the present invention, as Figures 1 - 5 shown, the air conditioning system 1 may further include a third heat exchanger 600.

[0066] The third heat exchanger 600 is provided with a first heat exchange channel 610. One end of the first heat exchange channel 610 is connected to the other end of the first throttling element 410, and the other end of the first heat exchange channel 610 is connected to one end of the second heat exchanger 500. That is to say, the first heat exchange channel 610 is respectively communicated with the first throttling element 410 and the second heat exchanger 500. The refrigerant flowing through the first throttling element 410 can flow through the first heat exchange channel 610 and then flow to the second heat exchanger 500.

[0067] The third heat exchanger 600 is further provided with a second heat exchange channel 620. One end of the second heat exchange channel 620 is connected to one end of the outdoor heat exchanger 10, and the other end of the second heat exchange channel 620 is connected to one end of the first heat exchanger 200. That is to say, the second heat exchange channel 620 is respectively communicated with the outdoor heat exchanger 10 and the first heat exchanger 200. The refrigerant flowing out of the outdoor heat exchanger 10 can flow through the second heat exchange channel 620 to the first heat exchanger 200, or the refrigerant flowing out of the first heat exchanger 200 can flow through the second heat exchange channel 620 to the outdoor heat exchanger 10.

[0068] In this way, when the air conditioning system 1 cools the battery, the refrigerant flowing out of the outdoor heat exchanger 10 can be divided into two paths. One path of the refrigerant flows through the first throttling element 410 to the first heat exchange channel 610 to flow to the second heat exchanger 500, and the other path of the refrigerant flows through the second heat exchange channel 620 to the first heat exchanger 200; when the air conditioning system 1 heats the battery, the refrigerant flowing out of the first heat exchanger 200 can first flow to the second heat exchange channel 620, and then after passing through the second heat exchange channel 620, it is divided into two paths. One path of the refrigerant flows through the first throttling element 410 to the first heat exchange channel 610 to flow to the second heat exchanger 500, and the other path of the refrigerant flows to the outdoor heat exchanger 10 to absorb the heat of the outdoor air through the outdoor heat exchanger 10.

[0069] Thus, the refrigerant flowing through the first heat exchange channel 610 can exchange heat with the refrigerant flowing through the second heat exchange channel 620. Moreover, the refrigerant flowing into the first heat exchange channel 610 can first flow through the first throttling element 410 to reduce the pressure and temperature, that is, the temperature of the refrigerant in the first heat exchange channel 610 can be lower than that of the refrigerant in the second heat exchange channel 620. As a result, the refrigerant in the first heat exchange channel 610 can absorb the heat of the refrigerant in the second heat exchange channel 620, further reducing the temperature of the refrigerant in the second heat exchange channel 620 so that the refrigerant in the second heat exchange channel 620 can be subcooled. This is beneficial to increasing the cooling capacity of the refrigerant for the battery through the first heat exchanger 200 when the air conditioning system 1 cools the battery. Also, after the refrigerant in the second heat exchange channel 620 is subcooled, the gaseous refrigerant in the refrigerant flowing into the first heat exchanger 200 can also become liquid refrigerant, which facilitates evenly distributing the liquid refrigerant into multiple first heat exchangers 200, making the distribution more uniform. Or, it can also increase the heat exchange amount between the refrigerant and the outdoor air through the outdoor heat exchanger 10 when the air conditioning system 1 heats the battery.

[0070] Furthermore, as Figures 1 - 5 shown, the air conditioning system 1 may further include a second throttling element 420. One end of the second throttling element 420 is connected to the other end of the second heat exchanger 500, and the other end of the second throttling element 420 is connected to the inlet 110. Herein, the second throttling element 420 may be a throttle valve.

[0071] That is to say, the second throttling element 420 may be disposed between the second heat exchanger 500 and the compressor. In this way, when the evaporation temperatures of the refrigerant flowing through the second heat exchanger 500 and the refrigerant flowing through the first heat exchanger 200 are made different by adjusting the first throttling element 410, the second throttling element 420 can throttle and reduce the pressure of the refrigerant flowing through the second heat exchanger 500 so that the pressure of the refrigerant flowing back from the second heat exchanger 500 to the compressor 100 is the same as the pressure of the refrigerant flowing back from the first heat exchanger 200 to the compressor 100, completing the refrigeration cycle for the battery.

[0072] In some specific embodiments of the present invention, as Figures 6 - 10 shown, the second heat exchanger 500 is a plate heat exchanger, and the second heat exchanger 500 is provided with a third heat exchange channel 510 and a fourth heat exchange channel 520. One end of the third heat exchange channel 510 is connected to the other end of the first throttling element 410, and the other end of the third heat exchange channel 510 is connected to the inlet 110. One end of the fourth heat exchange channel 520 is connected to one end of the outdoor heat exchanger 10, and the other end of the fourth heat exchange channel 520 is respectively connected to one end of the first heat exchanger 200 and one end of the first throttling element 410.

[0073] In this way, when the air conditioning system 1 cools the battery, the refrigerant flowing out of the outdoor heat exchanger 10 can first flow through the fourth heat exchange channel 520. Then, after the refrigerant flows out of the fourth heat exchange channel 520, it is divided into two paths. One path of the refrigerant flows through the first throttling element 410 to the third heat exchange channel 510 to absorb the heat of the energy storage converter through the plate heat exchanger, and the other path of the refrigerant flows to the first heat exchanger 200. When the air conditioning system 1 heats the battery, the refrigerant flowing out of the first heat exchanger 200 can be divided into two paths. One path of the refrigerant flows through the first throttling element 410 to the third heat exchange channel 510 to absorb the heat of the energy storage converter through the plate heat exchanger, and the other path of the refrigerant can flow through the fourth heat exchange channel 520 to the outdoor heat exchanger 10 to absorb the heat of the outdoor air through the outdoor heat exchanger 10.

[0074] Thus, regardless of whether the air conditioning system 1 cools or heats the battery, the refrigerant in the third heat exchange channel 510 can absorb the heat of the energy storage converter to reduce the temperature of the energy storage converter. Moreover, the refrigerant in the fourth heat exchange channel 520 can also be used to absorb the heat of the energy storage converter to reduce the temperature of the energy storage converter. In addition, the refrigerant in the third heat exchange channel 510 can also exchange heat with the refrigerant in the fourth heat exchange channel 520 to further reduce the temperature of the refrigerant flowing to the outdoor heat exchanger 10 or the first heat exchanger 200, thereby increasing the heat exchange amount of the refrigerant with the outdoor air through the outdoor heat exchanger 10, or increasing the cooling capacity of the refrigerant for the battery through the first heat exchanger 200.

[0075] Among them, in this embodiment, the cooling temperature of the second heat exchanger 500 for the energy storage converter can be controlled by controlling the on / off of the first throttling element 410.

[0076] In some specific embodiments of the present invention, as Figures 1 - 10 shown, there are multiple first heat exchangers 200. One ends of the multiple first heat exchangers 200 are respectively connected to one end of the outdoor heat exchanger 10, and the other ends of the first heat exchangers 200 are respectively connected to the third interface 330. That is to say, the multiple first heat exchangers 200 are arranged in parallel.

[0077] By providing multiple first heat exchangers 200, the multiple first heat exchangers 200 can respectively exchange heat with multiple batteries, that is, the multiple first heat exchangers 200 and the multiple batteries can be arranged in one-to-one correspondence, which is beneficial to improving the cooling or heating efficiency of the multiple batteries and making the cooling or heating of the multiple batteries more uniform.

[0078] Furthermore, as Figures 1 - 10As shown, the air conditioning system 1 may further include a plurality of third throttling elements 430. The plurality of third throttling elements 430 correspond to the plurality of first heat exchangers 200 one by one. One end of the third throttling element 430 is connected to one end of the outdoor heat exchanger 10, and the other end of the third throttling element 430 is connected to one end of the first heat exchanger 200. Wherein, the third throttling element 430 may be a throttle valve.

[0079] In this way, when the air conditioning system 1 is for battery cooling, the refrigerant can be throttled and cooled by the plurality of third throttling elements 430 respectively and then flow to the plurality of first heat exchangers 200 respectively. The refrigerant flowing to the plurality of first heat exchangers 200 can be throttled, cooled and depressurized more evenly, so that the refrigerant in the plurality of first heat exchangers 200 can fully absorb the heat of the battery, further ensuring the cooling effect on the battery.

[0080] In some specific embodiments of the present invention, as Figures 1 - 10 shown, the air conditioning system 1 may further include a fourth throttling element 440. One end of the fourth throttling element 440 is respectively connected to one end of the first throttling element 410 and one end of the third throttling element 430, and the other end of the third throttling element is connected to one end of the outdoor heat exchanger 10. Wherein, the fourth throttling element may be a throttle valve.

[0081] In this way, when the air conditioning system 1 is for battery heating, the refrigerant flowing out of the first heat exchanger 200 can flow to the outdoor heat exchanger 10 after being throttled by the fourth throttling element 440, so as to fully absorb the heat of the outdoor air through the outdoor heat exchanger 10. And with this setting, the refrigerant flowing through the plurality of first heat exchangers 200 can converge and then be throttled and cooled by the fourth throttling element 440, and then flow to the outdoor heat exchanger 10. The structure is simpler and can ensure the consistency of the pressure and temperature of the refrigerant flowing to the outdoor heat exchanger 10.

[0082] Thus, when the air conditioning system 1 is for battery heating, the plurality of third throttling elements 430 can all be in the fully open state, and only the fourth throttling element 440 is used for throttling, cooling and depressurizing.

[0083] In addition, when the air conditioning system 1 is for battery cooling, the fourth throttling element 440 can be in the fully open state, and the plurality of third throttling elements 430 can respectively throttle, cool and depressurize the refrigerant flowing to the plurality of first heat exchangers 200.

[0084] In some specific embodiments of the present invention, as Figure 4 and Figure 5 、 Figure 9 and Figure 10As shown, the air conditioning system 1 may further include a radiator 700. One end of the radiator 700 is respectively connected to one end of the first heat exchanger 200 and one end of the second heat exchanger 500, and the other end of the radiator 700 is connected to one end of the outdoor heat exchanger 10.

[0085] Among them, the radiator 700 can perform heat exchange with power components. For example, the power components can be parts of the controller, that is, the air conditioning system 1 can use the radiator 700 to dissipate heat and cool down the power components of the air conditioning system 1.

[0086] That is to say, the radiator 700 can be arranged between the first heat exchanger 200 and the outdoor heat exchanger 10, that is, the radiator 700 can be arranged between the second heat exchanger 500 and the outdoor heat exchanger 10.

[0087] In this way, when the air conditioning system 1 cools the battery, the low-temperature refrigerant flowing out of the outdoor heat exchanger 10 can flow to the radiator 700, or when the air conditioning system 1 heats the battery, the low-temperature refrigerant flowing out of the first heat exchanger 200 can flow to the radiator 700, so that the radiator 700 can use the low-temperature refrigerant to dissipate heat and cool down the power components of the air conditioning system 1.

[0088] In some specific embodiments of the present invention, as Figure 4 and Figure 5 、 Figure 9 and Figure 10 shown, the air conditioning system 1 may further include a gas-liquid separator 800. One end of the gas-liquid separator 800 is respectively connected to the fourth interface 340 and the other end of the second heat exchanger 500, and the other end of the gas-liquid separator 800 is connected to the inlet 110.

[0089] That is, the gas-liquid separator 800 is arranged between the fourth interface 340 and the inlet 110 of the compressor 100, and the gas-liquid separator 800 is arranged between the second heat exchanger 500 and the inlet 110 of the compressor 100. The gas-liquid separator 800 can separate gaseous refrigerant, liquid refrigerant and refrigerating oil, and the gas-liquid separator 800 can act as an intermediate storage for gaseous refrigerant to ensure stable suction of the compressor 100. Finally, the refrigerant returns to the compressor 100 through the inlet 110 to complete the heating or cooling cycle of the air conditioning system 1 for the battery, making the operation of the air conditioning system 1 more reliable.

[0090] As Figure 4 and Figure 5 、 Figure 9 and Figure 10As shown, the air conditioning system 1 may further include an oil separator 900. One end of the oil separator 900 is connected to the outlet 120, and the other end of the oil separator 900 is connected to the first interface 310. Moreover, the oil return port of the oil separator 900 is connected to the inlet 110 through a capillary tube 910. By adding the oil separator 900, the refrigerant discharged from the outlet 120 of the compressor 100 can first flow into the oil separator 900, and the oil separator 900 can separate the lubricating oil carried in the refrigerant from the refrigerant to ensure the safe and efficient operation of the air conditioning system 1.

[0091] Next, the air conditioning system 1 according to another embodiment of the present invention will be described with reference to the accompanying drawings.

[0092] As Figures 1 - 10 shown, the air conditioning system 1 according to an embodiment of the present invention may include a compressor 100. The compressor 100 has an inlet 110 and an outlet 120. The high-temperature and high-pressure refrigerant can be discharged through the outlet 120 of the compressor 100 and then flow back into the compressor 100 through the inlet 110 after completing the heating cycle or the cooling cycle.

[0093] The air conditioning system 1 may include an outdoor heat exchanger 10 for heat exchange with outdoor air. When the air conditioning system 1 cools the battery, the outdoor heat exchanger 10 can act as a condenser, and the refrigerant can release heat to the outside through the outdoor heat exchanger 10 so that the high-temperature refrigerant can become a medium-temperature or low-temperature refrigerant, thereby cooling the battery. When the air conditioning system 1 heats the battery, the outdoor heat exchanger 10 can act as an evaporator, and then the refrigerant can absorb the heat of the outdoor air through the outdoor heat exchanger 10 so that the refrigerant can be heated and then flow back into the compressor 100.

[0094] The air conditioning system 1 may include a first branch 20. One end of the first branch 20 is connected to one end of the outdoor heat exchanger 10, and the compressor 100, the outdoor heat exchanger 10, and the first branch 20 are connected to form a refrigerant circuit.

[0095] The air conditioning system 1 may include a second branch 30. One end of the second branch 30 is respectively connected to one end of the outdoor heat exchanger 10 and one end of the first branch 20, and the other end of the second branch 30 is connected to the inlet 110.

[0096] In this way, when the air conditioning system 1 operates, the refrigerant flowing out of the outdoor heat exchanger 10 can flow into the first branch 20 and the second branch 30 respectively, or the refrigerant flowing out of the second branch 30 can flow into the first branch 20 and the outdoor heat exchanger 10 respectively.

[0097] The air conditioning system 1 may further include a four-way valve 300. The four-way valve 300 may include a first interface 310, and the first interface 310 is connected to the outlet 120. In this way, the refrigerant flowing out of the outlet 120 of the compressor 100 can flow to the first interface 310.

[0098] The four-way valve 300 may include a second interface 320, and the second interface 320 is connected to the other end of the outdoor heat exchanger 10. In this way, the refrigerant flowing out of the second interface 320 can flow to the outdoor heat exchanger 10, or the refrigerant flowing out of the outdoor heat exchanger 10 can flow to the second interface 320.

[0099] The four-way valve 300 may further include a third interface 330, and the third interface 330 is connected to the other end of the first branch 20. In this way, the refrigerant can flow into the first branch 20 through the third interface 330, or the refrigerant flowing out of the first branch 20 can flow to the third interface 330.

[0100] The four-way valve 300 may further include a fourth interface 340, and the fourth interface 340 is connected to the inlet 110 of the compressor 100. In this way, the refrigerant can flow from the fourth interface 340 to the inlet 110 of the compressor 100, and then can flow back into the compressor 100.

[0101] Specifically, the first interface 310 is selectively communicated with one of the second interface 320 and the third interface 330, and the fourth interface 340 is selectively communicated with the other of the second interface 320 and the third interface 330.

[0102] For example, the first interface 310 may be communicated with the second interface 320, and the third interface 330 is communicated with the fourth interface 340; or the first interface 310 may be communicated with the third interface 330, and the second interface 320 is communicated with the fourth interface 340. In this way, by controlling the state of the four-way valve 300, the flow direction of the refrigerant in the four-way valve 300 can be changed, and then the flow direction of the refrigerant in the air conditioning system 1 can be adjusted.

[0103] In addition, the air conditioning system 1 may include a first heat exchanger 200. The first heat exchanger 200 is arranged on the first branch 20, and the first heat exchanger 200 is used for heat exchange with the battery, that is, the first heat exchanger 200 is a battery heat exchanger.

[0104] The air conditioning system 1 may further include a second heat exchanger 500. The second heat exchanger 500 is arranged on the second branch 30, and the second heat exchanger 500 is used for cooling the energy storage converter.

[0105] Among them, the air conditioning system 1 may further include a first throttling element 410 disposed on the second branch 30 and located between one end of the second branch 30 and the second heat exchanger 500. For example, the first throttling element 410 may be a throttle valve, and the first throttling element 410 can throttle, depressurize, and cool the refrigerant.

[0106] Thus, when the air conditioning system 1 needs to cool the battery and the energy storage converter simultaneously, the first interface 310 can be communicated with the second interface 320, and the third interface 330 and the fourth interface 340 can be communicated. In this way, the high-temperature refrigerant can flow from the outlet 120 of the compressor 100 to the first interface 310, then flow from the second interface 320 to the outdoor heat exchanger 10, and release heat to the outside through the outdoor heat exchanger 10 to form a low-temperature refrigerant. The low-temperature refrigerant flowing out of the outdoor heat exchanger 10 can be divided into two parts. One part of the refrigerant flows to the first branch 20, that is, flows to the first heat exchanger 200, and absorbs the heat of the battery through the first heat exchanger 200 to cool the battery. And the other part of the refrigerant can flow to the second branch 30, flow to the second heat exchanger 500 after throttling through the first throttling element 410, and then can absorb the heat of the energy storage converter through the second heat exchanger 500 to cool the energy storage converter. Moreover, by adjusting the opening degree of the first throttling element 410, the evaporation temperature of the refrigerant flowing through the second heat exchanger 500 can be adjusted, and then the evaporation temperatures of the refrigerants in the first heat exchanger 200 and the second heat exchanger 500 can be made different, so as to realize cooling and temperature reduction of the battery and the energy storage converter at different evaporation temperatures, and the adaptability is higher.

[0107] When the air conditioning system 1 needs to heat the battery, the first interface 310 can be communicated with the third interface 330, and the second interface 320 and the fourth interface 340 can be communicated. In this way, the high-temperature refrigerant can flow from the outlet 120 of the compressor 100 to the first interface 310 and flow to the first branch 20 through the third interface 330 to release heat to the battery through the first heat exchanger 200 to heat the battery. And the refrigerant flowing out of the first branch 20 can be divided into two paths. Part of the refrigerant flows to the second branch 30, and then can absorb the heat of the energy storage converter through the second heat exchanger 500 to cool the energy storage converter. And one part of the refrigerant flows to the outdoor heat exchanger 10 to absorb the heat of the outdoor air through the outdoor heat exchanger 10 and then flow back to the compressor 100. Thus, the air conditioning system 1 can realize heating the battery while cooling the energy storage converter to ensure that the energy storage converter can always operate at a low temperature, and the operation reliability is higher.

[0108] Other components and operations of the air conditioning system 1 according to the embodiments of the present invention are known to those of ordinary skill in the art, and will not be described in detail here.

[0109] In the air-conditioning system 1 of the present utility model, the refrigeration cycle of the air-conditioning system 1 is performed by using a compressor 100, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0110] The compressor 100 compresses the refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0111] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state that has been condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant that has expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 100. The evaporator can achieve a refrigeration effect by performing a heat exchange with the material to be cooled by utilizing the latent heat of evaporation of the refrigerant. Throughout the cycle, the air-conditioning system 1 can adjust the temperature and humidity of the indoor space.

[0112] In the description of this specification, the description of reference terms such as "specific embodiment", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0113] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An air conditioning system, comprising: a compressor having an inlet and an outlet; An outdoor heat exchanger, the outdoor heat exchanger is used for heat exchange with outdoor air; a first heat exchanger, wherein the first heat exchanger is used for heat exchange with the battery, one end of the first heat exchanger is connected to one end of the outdoor heat exchanger, and the compressor, the outdoor heat exchanger and the first heat exchanger are connected to form a refrigerant circuit; It is characterized in that The air conditioning system further comprises: A four-way valve, the four-way valve comprising a first interface, a second interface, a third interface and a fourth interface, the first interface being connected to the outlet, the second interface being connected to the other end of the outdoor heat exchanger, the third interface being connected to the other end of the first heat exchanger, and the fourth interface being connected to the inlet of the compressor; The first interface selectively communicates with one of the second interface and the third interface, and the fourth interface selectively communicates with the other of the second interface and the third interface; Wherein, the air conditioning system further comprises: a first throttling element, one end of which is respectively connected to the one end of the outdoor heat exchanger and the one end of the first heat exchanger; A second heat exchanger, the second heat exchanger is used to cool the energy storage inverter, one end of the second heat exchanger is connected to the other end of the first throttling element to selectively communicate with the one end of the outdoor heat exchanger or the one end of the first heat exchanger, and the other end of the second heat exchanger is connected to the inlet.

2. The air conditioning system according to claim 1, characterized in that: Also includes: A third heat exchanger, wherein the third heat exchanger is provided with a first heat exchange channel and a second heat exchange channel, wherein one end of the first heat exchange channel is connected to the other end of the first throttling element, and the other end of the first heat exchange channel is connected to the one end of the second heat exchanger, one end of the second heat exchange channel is connected to the one end of the outdoor heat exchanger, and the other end of the second heat exchange channel is connected to the one end of the first heat exchanger.

3. The air conditioning system according to claim 2, characterized in that: Also includes: A second throttling element, one end of the second throttling element is connected to the other end of the second heat exchanger, and the other end of the second throttling element is connected to the inlet.

4. The air conditioning system according to claim 1, characterized in that: The second heat exchanger is a plate heat exchanger, and is provided with a third heat exchange channel and a fourth heat exchange channel, one end of the third heat exchange channel is connected to the other end of the first throttling element, and the other end of the third heat exchange channel is connected to the inlet, one end of the fourth heat exchange channel is connected to the one end of the outdoor heat exchanger, and the other end of the fourth heat exchange channel is respectively connected to the one end of the first heat exchanger and the one end of the first throttling element.

5. The air conditioning system according to claim 1, characterized in that: There are multiple first heat exchangers, one ends of the multiple first heat exchangers are respectively connected to the one end of the outdoor heat exchanger, and the other ends of the first heat exchangers are respectively connected to the third interfaces.

6. The air conditioning system according to claim 5, characterized in that: Also includes: A plurality of third throttling elements, the plurality of third throttling elements and the plurality of first heat exchangers correspond one to one, one end of the third throttling element is connected to the one end of the outdoor heat exchanger, and the other end of the third throttling element is connected to the one end of the first heat exchanger.

7. The air conditioning system according to claim 6, characterized in that: Also includes: A fourth throttling element, one end of which is respectively connected to the one end of the first throttling element and the one end of the third throttling element, and the other end of the third throttling element is connected to the one end of the outdoor heat exchanger.

8. The air conditioning system according to claim 1, characterized in that: Also includes: A radiator, one end of which is connected to the one end of the first heat exchanger and the one end of the second heat exchanger respectively, and the other end of which is connected to the one end of the outdoor heat exchanger.

9. The air conditioning system according to claim 1, characterized in that: Also includes: a gas-liquid separator, one end of which is connected to the fourth interface and the other end of the second heat exchanger respectively, and the other end of which is connected to the inlet; An oil separator, one end of the oil separator is connected to the outlet, the other end of the oil separator is connected to the first interface, and the oil return port of the oil separator is connected to the inlet through a capillary tube.

10. An air conditioning system, comprising: a compressor having an inlet and an outlet; An outdoor heat exchanger, the outdoor heat exchanger is used for heat exchange with outdoor air; a first branch, one end of which is connected to one end of the outdoor heat exchanger, and the compressor, the outdoor heat exchanger and the first branch are connected to form a refrigerant circuit; a second branch, one end of which is connected to the one end of the outdoor heat exchanger and the one end of the first branch respectively, and the other end of which is connected to the inlet; It is characterized in that The air conditioning system further comprises: A four-way valve, the four-way valve comprising a first interface, a second interface, a third interface and a fourth interface, the first interface being connected to the outlet, the second interface being connected to the other end of the outdoor heat exchanger, the third interface being connected to the other end of the first branch, and the fourth interface being connected to the inlet; The first interface selectively communicates with one of the second interface and the third interface, and the fourth interface selectively communicates with the other of the second interface and the third interface; Wherein, the air conditioning system further comprises: A first heat exchanger, wherein the first heat exchanger is disposed on the first branch and is used for heat exchange with the battery; A second heat exchanger, the second heat exchanger is arranged on the second branch, and the second heat exchanger is used to cool the energy storage converter; A first throttling element is provided on the second branch and is located between the one end of the second branch and the second heat exchanger.

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