CN107791779B - Automobile air conditioning system and control method thereof - Google Patents
Automobile air conditioning system and control method thereof Download PDFInfo
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- CN107791779B CN107791779B CN201710672524.9A CN201710672524A CN107791779B CN 107791779 B CN107791779 B CN 107791779B CN 201710672524 A CN201710672524 A CN 201710672524A CN 107791779 B CN107791779 B CN 107791779B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
Abstract
The invention provides an automobile air conditioning system and a control method thereof, wherein the system comprises a compressor (1), a first heat exchanger (2), a pump (3), a first expansion device (4), a second expansion device (5), an outdoor heat exchanger (6), a second heat exchanger (101) and energy storage devices (10 and 11), wherein a phase-change energy storage material is arranged in the energy storage devices, and the first heat exchanger is a liquid heat exchanger; the system also comprises a cold accumulation mechanism and a heat accumulation mechanism, wherein under the cold accumulation mechanism, the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are sequentially communicated to form a loop; under the heat storage mechanism, the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are sequentially communicated to form a loop. Through setting up energy memory, realize the storage of energy, simple structure and cost are lower.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an automobile air conditioning system and a control method thereof.
Background
In the driving process of the electric automobile, the carriage may need to be cooled or heated, so that a comfortable riding environment is provided for passengers, the electric automobile is particularly applied to shared electric automobiles of urban intelligent traffic, the continuous driving mileage is relatively small, frequent charging is needed, and therefore how to reduce the energy consumption in a storage battery is reduced, and the cruising ability of the electric automobile after each charging is improved is very important.
Disclosure of Invention
The invention provides an automobile air conditioning system and a control method thereof.
Specifically, the invention is realized by the following technical scheme:
according to a first aspect of the invention, an automobile air conditioning system is provided, which comprises a compressor, a first heat exchanger, a pump, a first expansion device, a second expansion device, an outdoor heat exchanger, a second heat exchanger and an energy storage device, wherein a phase change energy storage material is arranged in the energy storage device, and the first heat exchanger is a liquid heat exchanger;
the automobile air conditioning system also comprises a cold accumulation mechanism and a heat accumulation mechanism, wherein under the cold accumulation mechanism, the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are sequentially communicated to form a loop;
under the heat storage mechanism, the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are sequentially communicated to form the loop.
Optionally, the energy storage devices are at least two, and at least two of the energy storage devices are connected in parallel.
Optionally, the vehicle air conditioning system further comprises a refrigeration mechanism;
under the refrigeration mechanism, the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger and the second heat exchanger are sequentially communicated to form a loop;
alternatively, the first and second electrodes may be,
the pump, the first heat exchanger, the energy storage device and the second heat exchanger are communicated in sequence to form a loop.
Optionally, the vehicle air conditioning system further comprises a heating mechanism;
under the heating mechanism, the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger and the second heat exchanger are sequentially communicated to form a loop;
alternatively, the first and second electrodes may be,
the pump, the first heat exchanger, the energy storage device and the second heat exchanger are communicated in sequence to form a loop.
Optionally, the first expansion device and the second expansion device are connected in series between the first heat exchanger and the outdoor heat exchanger, the first expansion device is connected with the first heat exchanger, and the second expansion device is connected with the outdoor heat exchanger;
the first expansion device comprises a first expansion valve and a first one-way valve which are connected in parallel;
the second expansion device comprises a second expansion valve and a second one-way valve which are connected in parallel.
Optionally, an expansion tank is included in communication with the pump.
Optionally, the phase change energy storage material comprises at least one of water, paraffin, crystalline hydrate.
Optionally, the heat exchanger further comprises a box body and a fan, the second heat exchanger and the fan are arranged in the box body, and the fan is opposite to the second heat exchanger;
wherein, under cold-storage mechanism and the heat accumulation mechanism, the fan is closed.
According to a second aspect of the present invention, there is provided a control method for an automotive air conditioner, applied to an automotive air conditioning system, the automotive air conditioning system including a compressor, a first heat exchanger, a pump, a first expansion device, a second expansion device, an outdoor heat exchanger, a second heat exchanger, and an energy storage device;
the method comprises the following steps:
when the vehicle is in a charging mode, controlling the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger to be sequentially communicated to form a loop, and controlling the pump, the first heat exchanger, the energy storage device and the second heat exchanger to be sequentially communicated to form a loop;
or the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger are controlled to be communicated in sequence to form a loop, and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are controlled to be communicated in sequence to form a loop.
Optionally, the method further comprises:
when the vehicle is in a running mode and the energy in the energy storage device is larger than or equal to the preset energy, the pump, the first heat exchanger, the energy storage device and the second heat exchanger are controlled to be communicated in sequence to form a loop.
Optionally, the method further comprises:
when the vehicle is in a running mode and the energy in the energy storage device is smaller than the preset energy, controlling the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger to be communicated in sequence to form a loop, and controlling the pump, the first heat exchanger and the second heat exchanger to be communicated in sequence to form the loop;
or the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger are controlled to be communicated in sequence to form a loop, and the pump, the first heat exchanger and the second heat exchanger are controlled to be communicated in sequence to form a loop.
According to the technical scheme, the energy storage device is arranged to store energy (including cold energy and heat energy), so that refrigeration or heating can be realized by using the stored energy, the purpose of prolonging the driving mileage is achieved, and the device is simple in structure and low in cost. In addition, the first heat exchanger is selected as a liquid heat exchanger, and the refrigerant circuit is separated from the circulating liquid circuit, so that the quantity of refrigerant entering the second heat exchanger can be reduced to the greatest extent, and the system safety is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of an automotive air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic view of the refrigerant flow path and the circulating liquid flow path of the automotive air conditioning system of FIG. 1 in a cold storage mechanism, with the flow paths shown in bold;
FIG. 3 is a schematic view of the refrigerant flow path and the circulating liquid flow path of the vehicle air conditioning system of FIG. 1 under a heat storage mechanism, with the flow paths shown in bold;
FIG. 4 is a schematic diagram of a refrigerant flow path and a circulating fluid flow path of the vehicle air conditioning system of FIG. 1 in a refrigeration mechanism, with the flow paths shown in bold;
FIG. 5 is a schematic view of a refrigerant flow path and a circulating fluid flow path of the vehicle air conditioning system of FIG. 1 in a heating mode, with the flow paths shown in bold;
FIG. 6 is a schematic view of a flow path of a circulating fluid for cooling or heating the vehicle air conditioning system of FIG. 1 via an energy storage device, wherein the flow path is shown in bold;
FIG. 7 is a flow chart of a method for controlling an air conditioner of a vehicle according to an embodiment of the invention;
fig. 8 is a flowchart of a control method of an air conditioner for a vehicle according to still another embodiment of the present invention.
Reference numerals:
1: a compressor; 2: a first heat exchanger; 3: a pump; 4: a first expansion device; 4 a: a first expansion valve; 4 b: a first check valve; 5: a second expansion device; 5 a: a second expansion valve; 5 b: a second one-way valve; 6: an outdoor heat exchanger; 7 a: a first shut-off valve; 7 b: a second stop valve; 7 c: a third stop valve; 7 d: a fourth stop valve; 8: an expansion reservoir; 9: a gas-liquid separator;
10: a first energy storage device; 11: a second energy storage device; 12 a: a fifth stop valve; 12 b: a sixth stop valve; 12 c: a seventh stop valve;
100: a box body; 101: a second heat exchanger; 102: a fan.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides an automotive air conditioning system, which may include a compressor 1, a first heat exchanger 2, a pump 3, a first expansion device 4, a second expansion device 5, an outdoor heat exchanger 6, a second heat exchanger 101, and energy storage devices (a first energy storage device 10 and a second energy storage device 11 in fig. 1). The first heat exchanger 2 is a liquid heat exchanger.
Wherein, the energy storage device is provided with a phase change energy storage material. In this embodiment, the phase change energy storage material is solidified into a solid state below a first predetermined temperature (e.g., 5 ℃) and is dissolved into a liquid state above a second predetermined temperature (e.g., 25 ℃). The phase-change energy storage material may include at least one of water, paraffin, and crystalline hydrate, and may further include other liquid capable of performing heat exchange.
The automotive air conditioning system may also include a cold storage mechanism and a heat storage mechanism. Specifically, under the cold accumulation mechanism, the energy storage device can store cold. Under the heat storage mechanism, the energy storage device can store heat energy. However, at the same time, the automobile air conditioner can only have one of a cold storage mechanism and a heat storage mechanism.
Referring to fig. 2, under the cold storage mechanism, the compressor 1, the outdoor heat exchanger 6, the first expansion device 4, and the first heat exchanger 2 are sequentially communicated to form a loop, and the pump 3, the first heat exchanger 2, the energy storage device, and the second heat exchanger 101 are sequentially communicated to form a loop. Referring to fig. 3, under the heat storage mechanism, the compressor 1, the first heat exchanger 2, the second expansion device 5, and the outdoor heat exchanger 6 are sequentially communicated to form a loop, and the pump 3, the first heat exchanger 2, the energy storage device, and the second heat exchanger 101 are sequentially communicated to form a loop. Wherein, the two loops of the loop formed by the sequential communication of the compressor 1, the outdoor heat exchanger 6, the first expansion device 4 and the first heat exchanger 2 and the loop formed by the sequential communication of the compressor 1, the first heat exchanger 2, the second expansion device 5 and the outdoor heat exchanger 6 are refrigerant loops, and the loop formed by the sequential communication of the pump 3, the first heat exchanger 2, the energy storage device and the second heat exchanger 101 is a circulating liquid loop.
It should be noted that, in the embodiment of the present invention, the sequential connection only illustrates a sequential relationship of connection between the respective devices, and other devices, such as a stop valve, may also be included between the respective devices. In addition, the circulating liquid of the present invention may be selected according to needs, for example, the circulating liquid may be water, oil or other substances capable of performing heat exchange, and may also be a mixed liquid of water and glycol or other mixed liquids capable of performing heat exchange, and the type of the circulating liquid is not particularly limited in the present invention.
Specifically, in the cold storage mechanism, the first heat exchanger 2 is used as an evaporator, and the outdoor heat exchanger 6 is used as a condenser. Referring to fig. 2, a compressor 1 compresses a low-temperature low-pressure gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters an outdoor heat exchanger 6, the high-temperature high-pressure refrigerant exchanges heat with outdoor air flow in the outdoor heat exchanger 6, the refrigerant releases heat, the released heat is carried to the outside ambient air by the air flow, and the refrigerant undergoes phase change and is condensed into a liquid or gas-liquid two-phase refrigerant. The refrigerant flows out of the outdoor heat exchanger 6, enters the first expansion device 4 for expansion, and is cooled and depressurized to become low-temperature and low-pressure refrigerant. The low-temperature low-pressure refrigerant enters the first heat exchanger 2 to exchange heat with the circulating liquid in the first heat exchanger 2 to absorb heat of the circulating liquid, and after the low-temperature circulating liquid enters the energy storage device, the energy is transmitted to the phase-change energy storage material in the energy storage device, so that the phase-change energy storage material is solidified into a solid state, and the storage of cold energy is realized. The energy storage device outputs the circulating liquid with the increased temperature, and the circulating liquid with the increased temperature enters the second heat exchanger 101 and the pump 3 in sequence, then flows into the first heat exchanger 2 again, and circulates in the way.
In the heat storage mechanism, the first heat exchanger 2 is used as a condenser or an air cooler, and the outdoor heat exchanger 6 is used as an evaporator. Referring to fig. 3, a compressor 1 compresses a low-temperature low-pressure gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters a first heat exchanger 2 and exchanges heat with a circulation liquid in the first heat exchanger 2, the refrigerant releases heat, the circulation liquid in the first heat exchanger 2 becomes a high-temperature circulation liquid, the high-temperature circulation liquid enters an energy storage device, the heat is released to a phase-change energy storage material in the storage device, and the phase-change energy storage material is dissolved into a liquid state (latent heat of fusion of the phase-change energy storage material is utilized), so that storage of thermal energy is. The energy storage device outputs the circulating liquid after releasing heat, and the circulating liquid after releasing heat enters the second heat exchanger 101 and the pump 3 in sequence and then flows into the first heat exchanger 2 again, and the circulation is performed in this way.
In the embodiment of the invention, the energy storage device is arranged to store energy (including cold energy and heat energy), so that the stored energy can be used for refrigerating or heating, the purpose of prolonging the driving mileage is achieved, and the energy storage device is simple in structure and low in cost. In addition, the first heat exchanger 2 is selected as a liquid heat exchanger, and the refrigerant circuit is separated from the circulating liquid circuit, so that the amount of refrigerant entering the second heat exchanger 101 can be reduced to the maximum extent, and the system safety can be improved.
In this embodiment, the first heat exchanger 2 may be a plate heat exchanger or other liquid heat exchanger. The type of the outdoor heat exchanger 6 and the second heat exchanger 101 may be selected according to needs, and the embodiment of the present invention is not limited thereto.
The energy storage device is a closed container, and the number of the energy storage devices can be selected according to needs. In this embodiment, there are at least two energy storage devices, and at least two energy storage devices are connected in parallel, so as to store more energy. Each energy storage device can be communicated with the second heat exchanger 101, the pump 3 and the first heat exchanger 2 in sequence to form a loop. Under a cold accumulation mechanism or a heat accumulation mechanism, at least two energy storage devices can be selected to work with one loop or a plurality of loops in a plurality of loops formed by sequentially communicating the second heat exchanger 101, the pump 3 and the first heat exchanger 2 respectively, so that cold energy or heat energy can be stored. Referring to fig. 1, the energy storage device includes a first energy storage device 10 and a second energy storage device 11. The first energy storage device 10 and the second energy storage device 11 are connected in parallel and then connected in series between the first heat exchanger 2 and the second heat exchanger 101. Of course, in other embodiments, one of the energy storage devices may be selected.
In addition, a gas-liquid separator 9 may be disposed at an inlet of the compressor 1 to separate the returned refrigerant, and a liquid portion of the returned refrigerant is stored in the gas-liquid separator 9, while a low-temperature and low-pressure gaseous refrigerant portion enters the compressor 1 to be compressed again, so as to realize the recycling of the refrigerant. Of course, the gas-liquid separator 9 may not be provided for some of the novel compressors 1.
The structure of the air conditioning system of the vehicle will be further explained below by setting the gas-liquid separator 9 and the energy storage device at the inlet of the compressor 1.
The first expansion device 4 and the second expansion device 5 may perform a cooling and pressure reducing function in an air conditioning system, and may generally include a throttle pipe, a common thermal expansion valve or an electronic expansion valve, etc. Referring again to fig. 1, in the present embodiment, the first expansion device 4 and the second expansion device 5 are connected in series between the first heat exchanger 2 and the outdoor heat exchanger 6. Wherein the first expansion device 4 is connected to the first heat exchanger 2, the first expansion device 4 may include a first expansion valve 4a and a first check valve 4b connected in parallel. The second expansion device 5 is connected to the outdoor heat exchanger 6, and the second expansion device 5 may include a second expansion valve 5a and a second check valve 5b connected in parallel. In the present embodiment, the first heat exchanger 2, the first expansion device 4, the second expansion device 5, and the outdoor heat exchanger 6 are in communication in this order. Under the cold storage mechanism, the second check valve 5b and the first expansion valve 4a operate, and the second expansion valve 5a and the first check valve 4b are closed. In the heat storage mechanism, the first check valve 4b and the second expansion valve 5a operate, and the first expansion valve 4a and the second check valve 5b are closed. The present embodiment realizes optimization of the refrigerant circuit by providing the first expansion device 4 and the second expansion device 5, and reduces the amount of laying of pipes in the air conditioning system. In the embodiment of the present invention, only one of the first expansion valve 4a and the first check valve 4b may be opened and the other may be closed in each mechanism. Accordingly, in each mechanism, the second expansion valve 5a and the second check valve 5b are opened and closed.
Further, referring to fig. 1, the vehicle air conditioning system may include a first cut-off valve 7a, a second cut-off valve 7b, a third cut-off valve 7c, and a fourth cut-off valve 7 d. The outlet of the compressor 1 comprises two branches, one branch is connected with the interface of the first heat exchanger 2 which is not connected with the first expansion device 4 through a second stop valve 7b, and the other branch is connected with the interface of the outdoor heat exchanger 6 which is not connected with the second expansion device 5 through a third stop valve 7 c. An inlet of the compressor 1 is divided into two branches after passing through the gas-liquid separator 9, wherein one branch is connected with a port of the first heat exchanger 2 which is not connected with the first expansion device 4 through a first stop valve 7a, and the other branch is connected with a port of the outdoor heat exchanger 6 which is not connected with the second expansion device 5 through a fourth stop valve 7 d. The third stop valve 7c is connected in parallel with the second stop valve 7b and the fourth stop valve 7 d.
Referring also to fig. 1, the automotive air conditioning system may also include a fifth shutoff valve 12a, a sixth shutoff valve 12b, and a seventh shutoff valve 12 c. The fifth stop valve 12a is connected in series between the first heat exchanger 2 and the second heat exchanger 101, the sixth stop valve 12b is connected in series with the first energy storage device 10, the seventh stop valve 12c is connected in series with the second energy storage device 11, and the fifth stop valve 12a, the sixth stop valve 12b and the seventh stop valve 12c are connected in parallel.
The on-off of the branch is realized by opening and closing the first stop valve 7a, the second stop valve 7b, the third stop valve 7c, the fourth stop valve 7d, the fifth stop valve 12a, the sixth stop valve 12b and the seventh stop valve 12c, so that the switching of different mechanisms is realized. The stop valves can be manual stop valves, and electric or pneumatic stop valves can also be adopted.
Referring to fig. 2, in the cold storage mechanism, the third stop valve 7c, the second check valve 5b, the first expansion valve 4a, the first stop valve 7a, the sixth stop valve 12b, and the seventh stop valve 12c are opened, and the second stop valve 7b, the fourth stop valve 7d, the second expansion valve 5a, the first check valve 4b, and the fifth stop valve 12a are closed. The flow path of the refrigerant circuit includes: compressor 1- > third stop valve 7c- > outdoor heat exchanger 6- > second check valve 5b- > first expansion valve 4a- > first heat exchanger 2- > first stop valve 7a- > gas-liquid separator 9- > compressor 1. The flow path of the circulating liquid loop includes: pump 3- > first heat exchanger 2- > first energy storage 10- > sixth stop valve 12b- > second heat exchanger 101- > pump 3, and/or pump 3- > first heat exchanger 2- > second energy storage 11- > seventh stop valve 12c- > second heat exchanger 101- > pump 3.
Referring to fig. 3, under the heat storage mechanism, the second stop valve 7b, the first check valve 4b, the second expansion valve 5a, the fourth stop valve 7d, and the sixth stop valve 12b and the seventh stop valve 12c are opened, and the first stop valve 7a, the third stop valve 7c, the first expansion valve 4a, the second check valve 5b, and the fifth stop valve 12a are closed. The flow path of the refrigerant circuit includes: compressor 1- > second stop valve 7b- > first heat exchanger 2- > first check valve 4b- > second expansion valve 5a- > outdoor heat exchanger 6- > fourth stop valve 7d- > gas-liquid separator 9- > compressor 1. The flow path of the circulating liquid loop includes: pump 3- > first heat exchanger 2- > first energy storage 10- > sixth stop valve 12b- > second heat exchanger 101- > pump 3, and/or pump 3- > first heat exchanger 2- > second energy storage 11- > seventh stop valve 12c- > second heat exchanger 101- > pump 3.
Referring to fig. 1, the air conditioning system of the vehicle may further include an expansion tank 8 communicating with the pump 3, serving as a liquid supply for the circulation liquid circuit in the cooling mechanism and the heating mechanism, and capable of accommodating and compensating for the expansion and contraction amount of the circulation liquid in the circulation liquid circuit.
The automobile air conditioning system further comprises a refrigerating mechanism and a heating mechanism, wherein the refrigerating mechanism can realize the refrigeration of the carriage, and the heating mechanism can realize the heating of the carriage. At the same time, the vehicle air conditioner may have one of a cold storage mechanism, a heat storage mechanism, a refrigeration mechanism, and a heating mechanism.
The loop selected by the refrigeration mechanism needs to be determined according to the current mode of the vehicle and the amount of cold stored in the energy storage device. For example, in one embodiment, referring to fig. 4, when the vehicle is in the running mode and the energy in the energy storage device is less than the preset energy level, under the refrigeration mechanism, the compressor 1, the outdoor heat exchanger 6, the first expansion device 4 and the first heat exchanger 2 are communicated in sequence to form a loop, and the pump 3, the first heat exchanger 2 and the second heat exchanger 101 are communicated in sequence to form a loop. Specifically, in the refrigeration system of the present embodiment, the first heat exchanger 2 is used as an evaporator, and the outdoor heat exchanger 6 is used as a condenser. Referring to fig. 4, the compressor 1 compresses low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, the high-temperature and high-pressure gaseous refrigerant enters the outdoor heat exchanger 6, the high-temperature and high-pressure refrigerant exchanges heat with outdoor air flow in the outdoor heat exchanger 6, the refrigerant releases heat, the released heat is carried to the external environment air by the air flow, and the refrigerant undergoes phase change and is condensed into liquid or gas-liquid two-phase refrigerant. The refrigerant flows out of the outdoor heat exchanger 6, enters the first expansion device 4 for expansion, and is cooled and depressurized to become low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant enters the first heat exchanger 2 to exchange heat with the circulating liquid in the first heat exchanger 2 to absorb heat of the circulating liquid, the low-temperature circulating liquid enters the second heat exchanger 101 to absorb heat of air around the second heat exchanger 101, so that the temperature of the air around the second heat exchanger 101 is reduced, and under the action of air flow, cold air enters a grid air duct (not marked in figure 4) and is sent into a carriage to reduce the temperature of the carriage, so that a comfortable riding environment is provided. The refrigerant changes its phase and is mostly evaporated into a low-temperature and low-pressure gaseous refrigerant, which flows back into the compressor 1, thereby realizing the cyclic utilization of the refrigerant. Referring to fig. 4, in the refrigeration mechanism of the present embodiment, the third stop valve 7c, the second check valve 5b, the first expansion valve 4a, the first stop valve 7a, and the fifth stop valve 12a are opened, and the second stop valve 7b, the fourth stop valve 7d, the second expansion valve 5a, the first check valve 4b, the sixth stop valve 12b, and the seventh stop valve 12c are closed. The flow path of the refrigerant circuit includes: compressor 1- > third stop valve 7c- > outdoor heat exchanger 6- > second check valve 5b- > first expansion valve 4a- > first heat exchanger 2- > first stop valve 7a- > gas-liquid separator 9- > compressor 1. The flow path of the circulating liquid loop includes: pump 3- > first heat exchanger 2- > fifth stop valve 12a- > second heat exchanger 101- > pump 3.
In yet another embodiment, referring to fig. 6, when the vehicle is in the running mode and the energy in the energy storage device is greater than or equal to the preset energy level, the pump 3, the first heat exchanger 2, the energy storage device and the second heat exchanger 101 are communicated in sequence to form a loop under the refrigeration mechanism. Specifically, circulating liquid output by the pump 3 enters the energy storage device after passing through the first heat exchanger, and exchanges heat with a phase change energy storage material in the energy storage device, the phase change energy storage material absorbs heat of the circulating liquid, the energy storage device outputs low-temperature circulating liquid, the low-temperature circulating liquid enters the second heat exchanger 101 and absorbs heat of air around the second heat exchanger 101, so that the temperature of the air around the second heat exchanger 101 is reduced, and under the action of air flow, cold air enters a grid air duct (not marked in fig. 6) and is sent into a carriage, so that the temperature of the carriage is reduced, and a comfortable riding environment is provided. The circulating liquid output by the second heat exchanger 101 passes through the pump 3 and the first heat exchanger 2 in sequence, and then flows into the energy storage device again, so that the circulating liquid circulates. Referring to fig. 6, in the refrigeration mechanism of the present embodiment, the sixth and seventh stop valves 12b, 12c are opened, and the first, second, third, fourth, fifth stop valves 7a, 7b, 7c, 7d, 12a, the first expansion valve 4a, the first check valve 4b, the second expansion valve 5a, and the second check valve 5b are closed. The flow path of the circulating liquid loop includes: pump 3- > first heat exchanger 2- > first energy storage 10- > sixth stop valve 12b- > second heat exchanger 101- > pump 3, and/or pump 3- > first heat exchanger 2- > second energy storage 11- > seventh stop valve 12c- > second heat exchanger 101- > pump 3.
The loop selected by the heating mechanism needs to be determined based on the current mode of the vehicle and the amount of energy stored in the energy storage device. For example, in one embodiment, referring to fig. 5, when the vehicle is in the running mode and the energy in the energy storage device is less than the preset energy level, under the heating mechanism, the compressor 1, the first heat exchanger 2, the second expansion device 5 and the outdoor heat exchanger 6 are sequentially communicated to form a loop, and the pump 3, the first heat exchanger 2 and the second heat exchanger 101 are sequentially communicated to form a loop. Wherein, the two loops of the loop formed by the sequential communication of the compressor 1, the outdoor heat exchanger 6, the first expansion device 4 and the first heat exchanger 2 and the loop formed by the sequential communication of the compressor 1, the first heat exchanger 2, the second expansion device 5 and the outdoor heat exchanger 6 are refrigerant loops, and the loop formed by the sequential communication of the pump 3, the first heat exchanger 2 and the second heat exchanger 101 is a circulating liquid loop. Specifically, in the heating mechanism of the present embodiment, the first heat exchanger 2 is used as a condenser or an air cooler, and the outdoor heat exchanger 6 is used as an evaporator. Referring to fig. 5, a compressor 1 compresses low-temperature low-pressure gaseous refrigerant into high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters a first heat exchanger 2 to exchange heat with circulating liquid in the first heat exchanger 2, the refrigerant releases heat, the circulating liquid in the first heat exchanger 2 becomes high-temperature circulating liquid, the high-temperature circulating liquid enters a second heat exchanger 101 to exchange heat with air around the second heat exchanger 101, the heat is released to the air to increase the temperature of the air around the second heat exchanger 101, and under the action of air flow, the hot air enters a grille air duct (not shown in fig. 5) and is sent into a compartment, so that the temperature of the compartment is increased, and a comfortable riding environment is provided. The cooled refrigerant flows to the second expansion device 5, is cooled and decompressed to become a low-temperature low-pressure refrigerant, enters the outdoor heat exchanger 6 to absorb heat in external air flow, is changed into a low-pressure gaseous refrigerant through phase change, and then flows back to the compressor 1, so that the cyclic utilization of the refrigerant is realized. Referring to fig. 5, in the heating system of the present embodiment, the second stop valve 7b, the first check valve 4b, the second expansion valve 5a, the fourth stop valve 7d, and the fifth stop valve 12a are opened, and the first stop valve 7a, the third stop valve 7c, the first expansion valve 4a, the second check valve 5b, the sixth stop valve 12b, and the seventh stop valve 12c are closed. The flow path of the refrigerant circuit includes: compressor 1- > second stop valve 7b- > first heat exchanger 2- > first check valve 4b- > second expansion valve 5a- > outdoor heat exchanger 6- > fourth stop valve 7d- > gas-liquid separator 9- > compressor 1. The flow path of the circulating liquid loop includes: pump 3- > first heat exchanger 2- > fifth stop valve 12a- > second heat exchanger 101- > pump 3.
In yet another embodiment, referring to fig. 6, when the vehicle is in the running mode and the energy in the energy storage device is greater than or equal to the preset energy level, the pump 3, the first heat exchanger 2, the energy storage device and the second heat exchanger 101 are communicated in sequence to form a loop under the heating mechanism. Specifically, the circulating liquid output by the pump 3 enters the energy storage device after passing through the first heat exchanger, and exchanges heat with the phase change energy storage material in the energy storage device, the phase change energy storage material releases heat to the circulating liquid, the energy storage device outputs high-temperature circulating liquid, the circulating liquid enters the second heat exchanger 101 and exchanges heat with air around the second heat exchanger 101, the high-temperature circulating liquid releases heat to the air so as to improve the temperature of the air around the second heat exchanger 101, and under the action of air flow, hot air enters a grid air duct (not marked in fig. 6) and is sent into a carriage, so that the temperature of the carriage is improved, and a comfortable riding environment is provided. The circulating liquid output by the second heat exchanger 101 passes through the pump 3 and the first heat exchanger 2 in sequence, and then flows into the energy storage device again, so that the circulating liquid circulates. Referring to fig. 6, in the heating mechanism of the present embodiment, the sixth and seventh stop valves 12b, 12c are opened, and the first, second, third, fourth, fifth stop valves 7a, 7b, 7c, 7d, 12a, 4b, 5a, 5b are closed. The flow path of the circulating liquid loop includes: pump 3- > first heat exchanger 2- > first energy storage 10- > sixth stop valve 12b- > second heat exchanger 101- > pump 3, and/or pump 3- > first heat exchanger 2- > second energy storage 11- > seventh stop valve 12c- > second heat exchanger 101- > pump 3.
In the refrigeration system, the fact that the energy in the energy storage device is less than the preset energy level means that the temperature of the phase-change material in the energy storage device is greater than a preset temperature (e.g., 5 ℃), and the fact that the energy in the energy storage device is greater than or equal to the preset energy level means that the temperature of the phase-change material in the energy storage device is less than or equal to the preset temperature (e.g., 5 ℃). Under the heating mechanism, the energy in the energy storage device being less than the preset energy level means that the temperature of the phase change material in the energy storage device is less than a preset temperature (e.g., 25 ℃), and the energy in the energy storage device being greater than or equal to the preset energy level means that the temperature of the phase change material in the energy storage device is greater than or equal to the preset temperature (e.g., 25 ℃).
In the embodiment of the invention, the first heat exchanger 2 participates in both cooling and heating, so that the system volume can be reduced, and the charging amount of the refrigerant is reduced. In addition, the same circulating liquid loop formed by the sequential communication of the pump 3, the first heat exchanger 2 and the second heat exchanger 101 is shared for cooling and heating, so that the system volume is further reduced, and the refrigerant charge amount is reduced.
Referring again to fig. 1, the vehicle air conditioning system may further include a cabinet 100 (i.e., an air conditioning cabinet) and a fan 102, and the second heat exchanger 101 and the fan 102 are disposed in the cabinet 100. In this embodiment, the fan 102 is opposite to the second heat exchanger 101, and the amount of air blown to the second heat exchanger 101 is controlled by controlling the on/off of the fan 102. Under the cold and heat accumulation mechanisms, the fan 102 is turned off, thereby improving the efficiency of cold and heat accumulation. Of course, under the cold accumulation mechanism and the heat accumulation mechanism, the fan 102 may also be turned on, only in this way, the cold energy or the heat energy in the circulation liquid loop may be brought to the compartment, so that the cold accumulation or the heat accumulation effect of the energy storage device is not good. In the cooling mechanism and the heating mechanism, the fan 102 is turned on, thereby accelerating cooling or heating of the vehicle compartment. Wherein, the fan 102 can be selected as the blower 102 or other.
In addition, the air door in the air conditioning box can be arranged or not arranged, and the air conditioning system is not influenced. The simplification of the internal structure of the air conditioning box greatly reduces the resistance of the air duct, saves the power consumption of the fan 102 and improves the endurance mileage.
It should be noted that, in each of the above embodiments, a plurality of stop valves are specifically described, and the opening and closing of the branch where the stop valve is located is realized by opening and closing the stop valve, so that switching of a plurality of mechanisms is realized, and the stop valve has a simple structure and reliable on-off control. It is understood that the forming of the passage under each mechanism can be realized by other manners by those skilled in the art, and is not limited to the above-mentioned embodiment of the stop valve, such as replacing two stop valves with a three-way valve.
It should be noted that, in the embodiment of the present invention, the first heat exchanger 2, the second heat exchanger 101, and the outdoor heat exchanger 6 are arranged in such a manner that the inlet and the outlet of each heat exchanger cannot be used as both the inlet and the outlet, so that the capacity of the heat exchanger can be exerted.
Referring to fig. 7, an embodiment of the present invention further provides a control method for an automotive air conditioner, which is applied to the automotive air conditioning system.
As shown in fig. 7, the method may include:
step S701: it is determined whether the vehicle is in a charging mode. If yes, the process proceeds to step S702 or step S703.
In one embodiment, when the vehicle is in the charging mode, whether the vehicle air conditioning system operates in the cold storage mechanism or the heat storage mechanism may be set according to the current ambient temperature of the vehicle. For example, when the ambient temperature is greater than or equal to a preset temperature (indicating that the vehicle is in a hot environment and the energy storage device needs to store cold so as to cool the compartment by the cold stored in the energy storage device during the running of the vehicle) while the vehicle is in the charging mode, for example, 35 ℃, the process proceeds to step S702. When the environmental temperature is lower than the preset temperature (indicating that the vehicle is in a severe cold environment and the energy storage device needs to store heat so as to heat the compartment by the heat energy stored by the energy storage device during the running process of the vehicle), for example, 10 ℃, the process proceeds to step S703.
In yet another embodiment, whether the vehicle is in the charging mode and the vehicle air conditioning system is operating in the cold storage mechanism or the heat storage mechanism may be set based on a user command received by the vehicle air conditioning system. For example, when the vehicle is in the charging mode and the user command is used to instruct the vehicle air conditioning system to enter the cold storage mechanism, the process goes to step S702; when the user command is used to instruct the vehicle air conditioning system to enter the heat storage mechanism, the process proceeds to step S703.
Step S702: and controlling the compressor 1, the outdoor heat exchanger 6, the first expansion device 4 and the first heat exchanger 2 to be communicated in sequence to form a loop, and controlling the pump 3, the first heat exchanger 2, the energy storage device and the second heat exchanger 101 to be communicated in sequence to form the loop.
The working process of the cold storage mechanism can be referred to the description of the above embodiments, and is not described herein again.
In this step, the fan 102 in the vehicle air conditioning system is turned off, thereby improving the cold accumulation efficiency of the energy storage device.
Step S703: and controlling the compressor 1, the first heat exchanger 2, the second expansion device 5 and the outdoor heat exchanger 6 to be sequentially communicated to form a loop, and controlling the pump 3, the first heat exchanger 2, the energy storage device and the second heat exchanger 101 to be sequentially communicated to form the loop.
The working process of the heat storage mechanism can be referred to the description of the above embodiments, and is not described herein again.
In this step, the fan 102 in the vehicle air conditioning system is turned off, thereby improving the efficiency of storing heat in the energy storage device.
In steps S702 and S703, the step of controlling the pump 3, the first heat exchanger 2, the energy storage device, and the second heat exchanger 101 to be sequentially communicated to form a loop may include: the control pump 3, the first heat exchanger 2, the first energy storage device 10 and the second heat exchanger 101 are sequentially communicated to form a loop, and meanwhile, the control pump 3, the first heat exchanger 2, the second energy storage device 11 and the second heat exchanger 101 are sequentially communicated to form a loop; or only controlling the pump 3, the first heat exchanger 2, the first energy storage device 10 and the second heat exchanger 101 to be communicated in sequence to form a loop; or only controlling the pump 3, the first heat exchanger 2, the second energy storage device 11 and the second heat exchanger 101 to be communicated in sequence to form a loop.
Referring to fig. 8, the method may further include:
step S801: it is determined whether the vehicle is in a run mode. If yes, the process proceeds to step S802.
In one embodiment, step S801 is performed after determining in step S701 that the vehicle is not in the charging mode.
Step S802: and judging whether the energy in the energy storage device is larger than or equal to the preset energy. If yes, go to step S803; otherwise, the process proceeds to step S804 or 805.
In one embodiment, when the vehicle is in the running mode, whether the vehicle air conditioning system works in the cooling mechanism or the heating mechanism needs to be set according to the current ambient temperature of the vehicle and the energy level in the energy storage device. For example, when the ambient temperature is greater than or equal to a preset temperature, for example, 35 ℃, and the energy in the energy storage device is greater than or equal to a preset energy level while the vehicle is in the running mode, the process proceeds to step S803, and the refrigeration of the vehicle cabin is realized through the cold stored in the storage device. When the ambient temperature is lower than the preset temperature, for example, 10 ℃, and the energy in the energy storage device is greater than or equal to the preset energy, the process proceeds to step S803, and the heating of the vehicle compartment is realized through the heat stored in the energy storage device. When the ambient temperature is greater than or equal to the preset temperature, for example, 35 ℃, and the energy in the energy storage device is less than the preset energy, the process proceeds to step S804, and the refrigeration of the vehicle compartment is realized through the refrigerant circuit and the circulating liquid circuit. When the ambient temperature is lower than the preset temperature, for example, 10 ℃, and the energy in the energy storage device is lower than the preset energy, the process proceeds to step S805, and the heating of the vehicle compartment is achieved through the refrigerant circuit and the circulating liquid circuit.
In yet another embodiment, the vehicle is in an operation mode, the vehicle air conditioning system selects one of the cooling mechanism and the heating mechanism according to the received user command, and determines whether to cool or heat through the energy storage device or the refrigerant circuit and the circulation circuit according to the energy level in the energy storage device. For example, when the vehicle is in the running mode, and after the vehicle air conditioning system receives a user instruction for instructing cooling, and when it is determined that the energy of the cooling capacity stored in the energy storage device is greater than or equal to the preset energy level, step S803 is executed to cool the vehicle compartment by the cooling capacity stored in the energy storage device, which is environment-friendly and can prolong the driving distance (electric vehicle). After the automobile air conditioning system receives a user instruction for indicating refrigeration, when the energy of the cold energy stored in the energy storage device is judged to be smaller than the preset energy, the step S804 is executed, and the carriage is refrigerated through the refrigerant loop and the circulating liquid loop. For another example, when the vehicle is in the running mode, and the vehicle air conditioning system receives a user instruction for instructing heating, and determines that the energy of the heat energy stored in the energy storage device is greater than or equal to the preset energy, step S803 is executed to heat the vehicle compartment by the heat energy stored in the energy storage device, which is environment-friendly and can prolong the driving distance (electric vehicle). After receiving the user instruction for instructing heating, the vehicle air conditioning system executes step S805 to heat the vehicle cabin through the refrigerant circuit and the circulating liquid circuit when determining that the energy of the heat energy stored in the energy storage device is smaller than the preset energy level.
Step S803: and controlling the pump 3, the first heat exchanger 2, the energy storage device and the second heat exchanger 101 to be communicated in sequence to form a loop.
In this step, the vehicle compartment is cooled or heated by the energy stored in the energy storage device, and the specific working process may refer to the description of the above embodiment, and will not be described herein again.
Wherein, the step of controlling the pump 3, the first heat exchanger 2, the energy storage device and the second heat exchanger 101 to be communicated in sequence to form a loop may include: the control pump 3, the first heat exchanger 2, the first energy storage device 10 and the second heat exchanger 101 are sequentially communicated to form a loop, and meanwhile, the control pump 3, the first heat exchanger 2, the second energy storage device 11 and the second heat exchanger 101 are sequentially communicated to form a loop; or only controlling the pump 3, the first heat exchanger 2, the first energy storage device 10 and the second heat exchanger 101 to be communicated in sequence to form a loop; or only controlling the pump 3, the first heat exchanger 2, the second energy storage device 11 and the second heat exchanger 101 to be communicated in sequence to form a loop. Specifically, cooling or heating may be implemented by first energy storage device 10, or second energy storage device 11, or first energy storage device 10 and second energy storage device 11 according to the current ambient temperature and the energy in first energy storage device 10 and second energy storage device 11.
In step S803, the fan 102 in the vehicle air conditioning system is turned on, so as to increase the speed of cooling or heating the vehicle compartment.
Step S804: and controlling the compressor 1, the outdoor heat exchanger 6, the first expansion device 4 and the first heat exchanger 2 to be communicated in sequence to form a loop, and controlling the pump 3, the first heat exchanger 2 and the second heat exchanger 101 to be communicated in sequence to form the loop.
The working process of refrigerating the vehicle compartment through the refrigerant circuit and the circulating liquid circuit can refer to the description of the above embodiments, and is not described herein again.
In this step, the fan 102 in the vehicle air conditioning system is turned off, thereby increasing the speed of cooling the vehicle compartment.
Step S805: and controlling the compressor 1, the first heat exchanger 2, the second expansion device 5 and the outdoor heat exchanger 6 to be sequentially communicated to form a loop, and controlling the pump 3, the first heat exchanger 2 and the second heat exchanger 101 to be sequentially communicated to form the loop.
The working process of heating the vehicle cabin through the refrigerant circuit and the circulating liquid circuit can be referred to the description of the above embodiments, and will not be described herein again.
In this step, the fan 102 in the vehicle air conditioning system is turned on, thereby accelerating the heating speed of the compartment.
The control method of the automobile air conditioner can be executed by an air conditioner controller in the automobile air conditioning system, and can also be executed by a separately arranged control device.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. An automobile air conditioning system comprises a compressor, a first heat exchanger, a pump, a first expansion device, a second expansion device, an outdoor heat exchanger, a second heat exchanger, an energy storage device, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a fifth stop valve and a sixth stop valve, wherein the sixth stop valve is connected with the energy storage device in series, the whole body is connected with the fifth stop valve in series between the first heat exchanger and the second heat exchanger in parallel, a phase-change energy storage material is arranged in the energy storage device, and the first heat exchanger is a liquid heat exchanger;
the outlet of the compressor comprises two branches, one branch is connected with a port of the first heat exchanger which is not connected with the first expansion device through a second stop valve, the other branch is connected with a port of the outdoor heat exchanger which is not connected with the second expansion device through a third stop valve, the inlet of the compressor is divided into two branches, one branch is connected with a port of the first heat exchanger which is not connected with the first expansion device through the first stop valve, and the other branch is connected with a port of the outdoor heat exchanger which is not connected with the second expansion device through a fourth stop valve;
the automobile air conditioning system also comprises a cold storage mechanism and a heat storage mechanism,
under the cold accumulation mechanism, the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are sequentially communicated to form a loop;
under the heat storage mechanism, the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are sequentially communicated to form the loop.
2. The vehicle air conditioning system of claim 1, wherein at least two of said energy storage devices are connected in parallel.
3. The vehicle air conditioning system of claim 1, further comprising a refrigeration mechanism;
under the refrigeration mechanism, the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger and the second heat exchanger are sequentially communicated to form a loop;
alternatively, the first and second electrodes may be,
the pump, the first heat exchanger, the energy storage device and the second heat exchanger are communicated in sequence to form a loop.
4. The vehicle air conditioning system of claim 1, further comprising a heating mechanism;
under the heating mechanism, the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger are sequentially communicated to form a loop, and the pump, the first heat exchanger and the second heat exchanger are sequentially communicated to form a loop;
alternatively, the first and second electrodes may be,
the pump, the first heat exchanger, the energy storage device and the second heat exchanger are communicated in sequence to form a loop.
5. The vehicle air conditioning system of claim 1, wherein said first and second expansion devices are connected in series between said first heat exchanger and said outdoor heat exchanger, said first expansion device being connected to said first heat exchanger and said second expansion device being connected to said outdoor heat exchanger;
the first expansion device comprises a first expansion valve and a first one-way valve which are connected in parallel;
the second expansion device comprises a second expansion valve and a second one-way valve which are connected in parallel.
6. The vehicle air conditioning system of claim 1, further comprising an expansion tank in communication with said pump.
7. The vehicle air conditioning system of claim 1, wherein the phase change energy storage material comprises at least one of water, paraffin, and crystalline hydrates.
8. The vehicle air conditioning system of claim 1, further comprising a cabinet and a fan, wherein the second heat exchanger and the fan are disposed in the cabinet, and the fan is opposite to the second heat exchanger;
wherein, under cold-storage mechanism and the heat accumulation mechanism, the fan is closed.
9. A control method of an automobile air conditioner, which is applied to the automobile air conditioning system according to any one of claims 1 to 8, characterized in that the automobile air conditioning system comprises a compressor, a first heat exchanger, a pump, a first expansion device, a second expansion device, an outdoor heat exchanger, a second heat exchanger, an energy storage device, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a fifth stop valve and a sixth stop valve;
the method comprises the following steps:
when the vehicle is in a charging mode, the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger are controlled to be sequentially communicated to form a loop and the pump, the first heat exchanger, the energy storage device and the second heat exchanger are controlled to be sequentially communicated to form a loop by opening the first stop valve, the third stop valve and the sixth stop valve and closing the second stop valve, the fourth stop valve and the fifth stop valve;
or the opening of the second stop valve, the fourth stop valve and the sixth stop valve and the closing of the first stop valve, the third stop valve and the fifth stop valve control the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger to be communicated in sequence to form a loop and control the pump, the first heat exchanger, the energy storage device and the second heat exchanger to be communicated in sequence to form the loop.
10. The control method of an air conditioner for a vehicle of claim 9, further comprising:
when the vehicle is in a running mode and the energy in the energy storage device is larger than or equal to the preset energy, the pump, the first heat exchanger, the energy storage device and the second heat exchanger are controlled to be communicated in sequence to form a loop through the opening of the sixth stop valve and the closing of the first stop valve, the second stop valve, the third stop valve, the fourth stop valve and the fifth stop valve.
11. The control method of an air conditioner for a vehicle of claim 9, further comprising:
when the vehicle is in a running mode and the energy in the energy storage device is smaller than the preset energy, the compressor, the outdoor heat exchanger, the first expansion device and the first heat exchanger are controlled to be sequentially communicated to form a loop and the pump, the first heat exchanger and the second heat exchanger are controlled to be sequentially communicated to form the loop by opening the first stop valve, the third stop valve and the fifth stop valve and closing the second stop valve, the fourth stop valve and the sixth stop valve;
or the opening of a second stop valve, a fourth stop valve and a fifth stop valve and the closing of a first stop valve, a third stop valve and a sixth stop valve control the compressor, the first heat exchanger, the second expansion device and the outdoor heat exchanger to be communicated in sequence to form a loop and control the pump, the first heat exchanger and the second heat exchanger to be communicated in sequence to form the loop.
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| KR100803524B1 (en) * | 2006-10-19 | 2008-02-14 | 주식회사 두원공조 | Air conditioning apparatus using accumulator for automobile |
| CN200993450Y (en) * | 2006-12-22 | 2007-12-19 | 彭剑峰 | Variable refrigerant flow intelligent ice-storage air conditioning system |
| CN102145644A (en) * | 2011-03-07 | 2011-08-10 | 中国科学院广州能源研究所 | Cold/heat combined energy-storing electric automobile air conditioning system |
| JP6028756B2 (en) * | 2014-03-19 | 2016-11-16 | トヨタ自動車株式会社 | Battery temperature control device |
| CN106608157B (en) * | 2015-10-23 | 2020-12-01 | 杭州三花研究院有限公司 | Air conditioning system and air conditioning control method |
| CN105522890B (en) * | 2015-12-21 | 2018-08-10 | 浙江工商大学 | Automobile engine waste heat recycles air conditioning control device |
| CN106379133A (en) * | 2016-10-10 | 2017-02-08 | 中国科学院广州能源研究所 | Energy storage device of heat pump type double-energy storage electric vehicle air conditioner |
| CN106585324A (en) * | 2016-12-30 | 2017-04-26 | 中原工学院 | Overhead type heat pump type carriage air-conditioning system with total heat recovery apparatus |
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