A control method, apparatus, and related equipment for a heat pump

Abstract

This disclosure provides a control method, apparatus, and related equipment for a heat pump. The control method includes: acquiring a first discharge pressure value of an air conditioning unit before the compressor starts; and controlling the compressor to start when the first discharge pressure value is simultaneously greater than a first threshold and a second threshold. The first threshold is related to the minimum start-up temperature of the heat pump, and the second threshold is related to the saturation pressure of the refrigerant. This disclosure enables start-up and shutdown control of the compressor in the heat pump based on the discharge pressure of the air conditioning unit, allowing for smooth start-up of the air conditioning unit at low temperatures and preventing compressor malfunctions during low-temperature startup.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of intelligent driving, in particular to a control method and device for a heat pump and related equipment. BACKGROUND

[0002] The development of electric vehicles has been more than ten years, and the technology of automobile air conditioning is also constantly updated. In recent years, with the development of electric vehicles, air conditioning equipment based on heat pumps has been increasingly recognized by vehicle manufacturers. However, the low-temperature characteristics of the refrigerant used in the current heat pump air conditioning of the vehicle are poor, and at low temperatures, the state of the refrigerant is liquid, which makes the heating performance of the compressor poor at low temperatures, and the parameters and pressure of the refrigerant cannot be borrowed from the non-heat pump case, thereby causing the air conditioning equipment to fail to start at low temperatures, poor low-temperature heating effect, high compressor failure rate, and other problems. SUMMARY

[0003] The purpose of the embodiments of the present disclosure is to provide a control method and device for a heat pump and related equipment to solve the problems of the air conditioning equipment failing to start at low temperatures, poor low-temperature heating effect, high compressor failure rate, and other problems existing in the prior art.

[0004] To solve the above technical problems, the embodiments of the present disclosure adopt the following technical solutions:

[0005] A control method for a heat pump used in an air conditioning equipment, the heat pump comprising at least a compressor, comprising: obtaining a first discharge pressure value of the air conditioning equipment before starting the compressor; and controlling to start the compressor when the first discharge pressure value is greater than both a first threshold value and a second threshold value, wherein the first threshold value is related to a minimum starting temperature of the heat pump, and the second threshold value is related to a saturation pressure value of a refrigerant.

[0006] In some embodiments, the first threshold value is a pressure value corresponding to the minimum starting temperature of the heat pump, and the second threshold value is a saturation pressure value corresponding to a temperature value obtained based on a difference between a current ambient temperature and a preset temperature.

[0007] In some embodiments, after the step of controlling to start the compressor when the first discharge pressure value is greater than both the first threshold value and the second threshold value, the method further comprises: obtaining a second discharge pressure value of the air conditioning equipment after the compressor is started for a first predetermined time; and controlling to stop the compressor when the second discharge pressure value is less than or equal to a third threshold value.

[0008] In some embodiments, after the step of controlling to stop the compressor when the second discharge pressure value is less than or equal to the third threshold value, the method further comprises: restarting the compressor after the compressor is stopped for a second predetermined time.

[0009] In some embodiments, the number of times of turning off the compressor in one power-on period cannot exceed a preset number threshold.

[0010] In some embodiments, the third threshold is the minimum discharge pressure value of the stable operation of the compressor.

[0011] The embodiments of the present disclosure also provide a control device for a heat pump used in an air conditioning device, the heat pump comprising at least a compressor, comprising: a first acquisition module configured to acquire a first discharge pressure value of the air conditioning device before starting the compressor; and a start control module configured to control starting the compressor when the first discharge pressure value is greater than both a first threshold and a second threshold, wherein the first threshold is related to a minimum starting temperature of the heat pump, and the second threshold is related to a saturation pressure value of a refrigerant.

[0012] The embodiments of the present disclosure also provide a storage medium storing a computer program, which is executed by a processor to implement the steps of any of the above methods.

[0013] The embodiments of the present disclosure also provide a heat pump comprising at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any of the above methods when executing the computer program stored in the memory.

[0014] The embodiments of the present disclosure also provide an air conditioning device comprising the heat pump described in the above technical solutions.

[0015] The embodiments of the present disclosure acquire the first discharge pressure value of the air conditioning device before starting the compressor in the heat pump, and control starting the compressor when the first discharge pressure value is greater than both a first threshold and a second threshold, wherein the first threshold is related to a minimum starting temperature of the heat pump, and the second threshold is related to a saturation pressure value of a refrigerant. The above method controls the start and stop of the compressor of the heat pump based on the discharge pressure of the air conditioning device, so as to control the start and stop of the compressor in the heat pump according to the discharge pressure of the air conditioning device in a low-temperature environment, improve the low-temperature heating effect, and avoid the failure of the compressor in the low-temperature starting. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1Structure schematic diagram of air conditioning equipment according to an embodiment of the present disclosure;

[0018] Figure 2 Logic schematic diagram of a control method for a heat pump according to an embodiment of the present disclosure;

[0019] Figure 3 Logic schematic diagram of a control method for a heat pump according to an embodiment of the present disclosure;

[0020] Figure 4 Structure schematic diagram of a control device for a heat pump according to an embodiment of the present disclosure;

[0021] Figure 5 Structure schematic diagram of a heat pump according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0022] Various aspects and features of the present disclosure are described herein with reference to the accompanying drawings.

[0023] It is to be understood that various alterations, modifications and improvements can be made to the embodiments herein disclosed. The foregoing description does not exclude other embodiments which can be derived from the description by making obvious modifications and improvements by a person skilled in the art. The above description is therefore to be construed as illustrative only and not as limiting the present disclosure.

[0024] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present disclosure and, together with the description given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0025] These and other characteristics, features and advantages of the present disclosure will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of non-limiting examples, the principles of the present disclosure.

[0026] It is also to be understood that even though a number of embodiments of the present disclosure have been described herein, many modifications, alternatives and equivalents will be apparent to those skilled in the art and can be made without departing from the scope and spirit of the present disclosure, which is defined by the following claims.

[0027] The above and other aspects, features and advantages of the present disclosure will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of non-limiting examples, the principles of the present disclosure.

[0028] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it will be understood that the embodiments described are merely examples of the present disclosure, which can be implemented in numerous ways. Well-known and / or redundant functions and structures have not been described in detail to avoid obscuring the present disclosure unnecessarily. Therefore, specific structural and functional details disclosed herein are not intended to limit the present disclosure, but merely as a representative basis for the claims and for teaching a person skilled in the art to employ the present disclosure in substantially any appropriate detailed structure.

[0029] The specification can use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which can refer to one or more embodiments according to the present disclosure.

[0030] The control method for a heat pump according to the embodiments of the present disclosure is used to start the heat pump in a low-temperature environment, where the heat pump is used in an air conditioning device in a vehicle, and the heat pump at least includes a compressor. When starting in a low-temperature environment, the ambient temperature needs to be considered for the selection of different heat pumps, for example, when the ambient temperature is lower than a preset temperature threshold, which can be set to minus 15 degrees, a waste heat recovery type heat pump can be used, and when the ambient temperature is higher than the preset temperature threshold, an air source type heat pump can be used.

[0031] Generally, the air conditioning device can adopt any form or structure, and the following will be introduced by taking the structure of a specific air conditioning device as an example. In the structure of a specific air conditioning device, as shown in Figure 1 The cooling liquid circulation pipeline and the heat pump side refrigerant circulation pipeline are included, wherein the cooling liquid circulation pipeline includes a cooler 11, the output ends of the cooler 11 are connected with a first cooling pipeline and a second cooling pipeline, a charger 13 and a motor 14 are arranged on the first cooling pipeline, and a battery 15 is arranged on the second cooling pipeline, so as to cool the charger 13, the motor 14 and the battery 15 by the cooling liquid, wherein the output end of the first cooling pipeline is connected with a front end radiator 10 through a first three-way valve 12, for example, the output end of the first cooling pipeline is connected with a c port of the first three-way valve 12, the front end radiator 10 is connected with a b port of the first three-way valve 12, and an a port of the first three-way valve 12 is connected with the second cooling pipeline, the output ends of the first cooling pipeline and the second cooling pipeline are connected with a warm air circulation pipeline through a four-way valve 16, wherein the cooler 11 is connected with a d port of the four-way valve 16, and the second cooling pipeline is connected with a c port of the four-way valve 16.

[0032] Further, the heat pump side refrigerant circulation includes a compressor 21, a condenser 22, an outdoor heat exchanger 23, an evaporator 24 and a gas-liquid separator 25 connected in sequence, wherein the output end of the condenser 22 is connected with the input end of the evaporator 24, the output end of the outdoor heat exchanger 23 is connected with the input end of the evaporator 24 through the cooler 11, and the refrigerant circulation pipeline is connected with the warm air circulation pipeline through the condenser 22.

[0033] Further, the warm air circulation pipeline comprises a warm air core 31, a PTC 32 and a water overflow tank 33, an input end of the PTC 32 is connected with the condenser 22 through a second three-way valve 34, a port a of the second three-way valve 34 is connected with the PTC 32, ports b and c of the second three-way valve 34 are both connected with the condenser 22, an output end of the warm air core 31 is connected with a port b of the four-way valve 16, a port a of the four-way valve 16 is connected with the condenser 22 through the water overflow tank 33.

[0034] For example, based on the air conditioning equipment provided above, the control method for the heat pump can ensure normal start of the heat pump, and can also avoid compressor failure caused by compressor misstart due to refrigerant leakage, such as Figure 2 as shown, comprising the following steps:

[0035] S101, obtaining a first exhaust pressure value of the air conditioning equipment before starting the compressor.

[0036] In this step, the first exhaust pressure value of the air conditioning equipment before starting the compressor is obtained. Specifically, when the compressor is started, the first exhaust pressure value of the air conditioning equipment is detected, for example, the first exhaust pressure value can be obtained by setting a sensor at the exhaust port of the air conditioning equipment.

[0037] S102, when the first exhaust pressure value is greater than both a first threshold value and a second threshold value, starting the compressor, wherein the first threshold value is related to the minimum starting temperature of the heat pump, and the second threshold value is related to the saturation pressure value of the refrigerant.

[0038] After obtaining the first exhaust pressure value of the air conditioning equipment before starting the compressor through the above step S101, in this step, when the first exhaust pressure value is greater than both a first threshold value and a second threshold value, starting the compressor, wherein the first threshold value is related to the minimum starting temperature of the heat pump, and the second threshold value is related to the saturation pressure value of the refrigerant.

[0039] The first threshold value is a calibration value, which is a pressure value corresponding to the minimum starting temperature of the heat pump. Different heat pumps have different minimum starting temperatures and corresponding pressure values. The correspondence between the minimum starting temperature and the pressure value can be formed based on experience or actual measurement. The second threshold value is a predetermined saturated pressure value of the refrigerant. The temperature value obtained by subtracting a preset temperature value from the current ambient temperature value is obtained, and the corresponding saturated pressure value of the refrigerant is obtained based on the calculated temperature value. This processing is mainly to prevent the start of the compressor in the case of refrigerant leakage. The preset temperature value mentioned above is a calibration value, which can be set to 5℃, which can be calibrated in combination with the structure of the air conditioning equipment and the error of the sensor and other factors. In this way, the compressor is started only when the first discharge pressure value is greater than the first threshold value and the second threshold value. Otherwise, the compressor is not allowed to start. In this way, the compressor can be started reasonably in a low-temperature environment, prolonging the service life of the compressor.

[0040] In another embodiment, after the start of the compressor, the discharge pressure value of the air conditioning equipment can also be detected to realize stable operation in a low-temperature environment. Specifically, as shown in Figure 3 The method comprises the following steps:

[0041] S103, after the start of the compressor for a first predetermined time, obtaining a second discharge pressure value of the air conditioning equipment.

[0042] In this step, after the start of the compressor for a predetermined time, a second discharge pressure value of the air conditioning equipment is obtained. Specifically, after the start of the compressor and after a predetermined time, a second discharge pressure value of the air conditioning equipment is obtained again. The predetermined time can be set to 20s. The predetermined time is set based on the fact that the operation of the newly started compressor in a low-temperature environment is unstable, and the discharge pressure value needs to be detected after the operation is relatively stable, so that the detection result is more accurate.

[0043] S104, when the second discharge pressure value is less than or equal to a third threshold value, the compressor is controlled to be turned off.

[0044] After the compressor is started for a predetermined time through the above step S103, a second discharge pressure value of the air conditioning device is obtained, and in this step, the compressor is controlled to be turned off when the second discharge pressure value is less than or equal to a third threshold value. Specifically, the third threshold value herein is a minimum discharge pressure value indicating that the compressor is running stably, which can be set to 2.5 bar, for example. In this step, if the second discharge pressure value is greater than the third threshold value, the compressor is allowed to run normally, and if the second discharge pressure value is less than or equal to the third threshold value, the compressor is controlled to be turned off.

[0045] S105, after the compressor is turned off for a second predetermined time, the compressor is started again.

[0046] After the compressor is controlled to be turned off when the second discharge pressure value is less than or equal to the third threshold value through the above step S104, in this step, the compressor is started again after the compressor is turned off for a second predetermined time. The purpose of setting the second predetermined time herein is to continue to attempt to start the compressor again after a certain time if the compressor is turned off because of, for example, a low discharge pressure value. Specifically, the second predetermined time herein is set to 15 s, for example, and the compressor is started again after the compressor is turned off for 15 s, for example.

[0047] Of course, if the compressor is turned off because of, for example, a low discharge pressure value, it can be because of a lack of refrigerant or other faults. In order to ensure that the compressor does not start and stop frequently so as to prolong the service life of the compressor, the number of times that the compressor is turned off in one power-on period cannot exceed a preset number threshold value, which is set to 3 times, for example. That is, if the number of times that the compressor is turned off in one power-on period exceeds 3 times, the compressor will not be started again.

[0048] The embodiment of the present disclosure obtains a first discharge pressure value of the air conditioning device before the compressor in the heat pump is started, and controls the compressor to be started when the first discharge pressure value is greater than both a first threshold value and a second threshold value. The first threshold value herein is related to the minimum starting temperature of the heat pump, and the second threshold value herein is related to the saturation pressure value of the refrigerant. Therefore, the compressor in the heat pump can be controlled to start and stop according to the discharge pressure of the air conditioning device in a low-temperature environment, and the compressor can be prevented from failing to start in a low-temperature environment.

[0049] The second embodiment of the present disclosure provides a control device for a heat pump, which is used to start the heat pump in a low-temperature environment. The heat pump is used in an air conditioning device in a vehicle, and the heat pump at least includes a compressor, a condenser, an evaporator, and an expansion valve. Figure 4As shown, the control device 100 comprises a first acquisition module 110 and a start control module 120 which are coupled with each other, wherein:

[0050] The first acquisition module 110 is configured to acquire a first exhaust pressure value of the air conditioning equipment before starting the compressor.

[0051] The start control module 120 is configured to control starting the compressor when the first exhaust pressure value is greater than both a first threshold value and a second threshold value, wherein the first threshold value is related to a minimum starting temperature of the heat pump, and the second threshold value is related to a saturated pressure value of a refrigerant.

[0052] Further, the first threshold value is a pressure value corresponding to the minimum starting temperature of the heat pump, and the second threshold value is a saturated pressure value corresponding to a temperature value obtained based on a difference between a current environment temperature and a preset temperature.

[0053] Further, the control device further comprises:

[0054] A second acquisition module is configured to acquire a second exhaust pressure value of the air conditioning equipment after the compressor is started for a first predetermined time.

[0055] A shutdown control module is configured to control shutting down the compressor when the second exhaust pressure value is less than or equal to a third threshold value.

[0056] Further, the start control module is further configured to start the compressor again after the compressor is shut down for a second predetermined time.

[0057] Further, in one power-on period, the number of times of shutting down the compressor cannot exceed a preset number threshold value.

[0058] Further, the third threshold value is a minimum exhaust pressure value of stable operation of the compressor.

[0059] The embodiments of the present disclosure can acquire the first exhaust pressure value of the air conditioning equipment before starting the compressor in the heat pump, and control starting the compressor when the first exhaust pressure value is greater than both the first threshold value and the second threshold value, wherein the first threshold value is related to the minimum starting temperature of the heat pump, and the second threshold value is related to the saturated pressure value of the refrigerant, so that the compressor in the heat pump can be controlled to start and stop according to the exhaust pressure of the air conditioning equipment in a low-temperature environment, and the compressor can be prevented from malfunctioning in low-temperature starting.

[0060] A third embodiment of the present disclosure provides a storage medium, which is a computer readable medium and stores a computer program, and the computer program is executed by a processor to implement the method provided by the first embodiment of the present disclosure, and the method comprises the following steps S11 to S12:

[0061] S11, obtaining a first discharge pressure value of the air conditioning equipment before starting the compressor;

[0062] S12, when the first discharge pressure value is greater than both a first threshold value and a second threshold value, controlling to start the compressor, wherein the first threshold value is related to a minimum starting temperature of the heat pump, and the second threshold value is related to a saturation pressure value of the refrigerant.

[0063] Further, the computer program is executed by the processor to implement other methods provided by the first embodiment of the present disclosure

[0064] The embodiments of the present disclosure obtain the first discharge pressure value of the air conditioning equipment before starting the compressor in the heat pump, and control to start the compressor when the first discharge pressure value is greater than both the first threshold value and the second threshold value, wherein the first threshold value is related to the minimum starting temperature of the heat pump, and the second threshold value is related to the saturation pressure value of the refrigerant, so that the compressor in the heat pump can be started and stopped according to the discharge pressure of the air conditioning equipment in a low-temperature environment, and the compressor can be prevented from malfunctioning in low-temperature starting.

[0065] The fourth embodiment of the present disclosure provides a heat pump, as shown in Figure 5 The heat pump 200 at least includes a processor 210 and a memory 220, the memory 220 stores a computer program 230, and the processor 210 implements the method provided by any embodiment of the present disclosure when executing the computer program 230 on the memory 220. For example, the computer program steps are as follows S21 to S22:

[0066] S21, obtaining a first discharge pressure value of the air conditioning equipment before starting the compressor;

[0067] S22, when the first discharge pressure value is greater than both a first threshold value and a second threshold value, controlling to start the compressor, wherein the first threshold value is related to a minimum starting temperature of the heat pump, and the second threshold value is related to a saturation pressure value of the refrigerant.

[0068] Further, the processor also executes other methods in the first embodiment by the computer program.

[0069] The embodiments of the present disclosure obtain the first discharge pressure value of the air conditioning equipment before starting the compressor in the heat pump, and control to start the compressor when the first discharge pressure value is greater than both the first threshold value and the second threshold value, wherein the first threshold value is related to the minimum starting temperature of the heat pump, and the second threshold value is related to the saturation pressure value of the refrigerant, so that the compressor in the heat pump can be started and stopped according to the discharge pressure of the air conditioning equipment in a low-temperature environment, and the compressor can be prevented from malfunctioning in low-temperature starting.

[0070] The fifth embodiment of the present disclosure provides an air conditioning device including the heat pump described in the fourth embodiment, where the air conditioning device can adopt any structure or form.

[0071] The embodiment of the present disclosure can obtain the first exhaust pressure value of the air conditioning device before starting the compressor in the heat pump, and control to start the compressor when the first exhaust pressure value is greater than both the first threshold value and the second threshold value, where the first threshold value is related to the minimum starting temperature of the heat pump, and the second threshold value is related to the saturation pressure value of the refrigerant, thereby enabling the start-stop control of the compressor in the heat pump according to the exhaust pressure of the air conditioning device in a low-temperature environment, and avoiding the failure of the compressor in low-temperature starting.

[0072] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional units and modules is exemplified, and in actual application, the above functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of software functional unit. In addition, the specific name of each functional unit and module is only for easy distinction, and does not limit the protection scope of the present application. The specific working process of the units and modules in the system can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0073] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the relevant description of other embodiments.

[0074] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0075] In the embodiments of the present application, it should be understood that the disclosed apparatus / terminal device and method can be implemented in other manners. For example, the embodiments of the apparatus / terminal device described above are merely schematic, and the division of the modules or units is merely logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0076] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0077] In addition, each functional unit in the various embodiments of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0078] The integrated module, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. When the processor executes the computer program, the steps of the above-mentioned motor torque control method embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable file or some intermediate form. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the computer readable medium can include appropriate contents according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0079] Furthermore, the features of the various embodiments shown in the drawings or described in the specification can not be understood to be independent of one another. Rather, each feature described in one example of an embodiment can be combined with one or more other desired features from one or more other embodiments, thus producing other embodiments not literally described or claimed.

[0080] The above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; even though the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A control method for a heat pump used in an air conditioning apparatus, the heat pump including at least a compressor, characterized by, The method comprises: acquiring a first discharge pressure value of the air conditioning equipment before starting the compressor; controlling to start the compressor when the first discharge pressure value is greater than both a first threshold value and a second threshold value, wherein the first threshold value is related to a minimum starting temperature of the heat pump, the first threshold value is a pressure value corresponding to the minimum starting temperature of the heat pump, and the second threshold value is related to a saturation pressure value of a refrigerant, the second threshold value is a saturation pressure value corresponding to a temperature value obtained based on a difference between a current environment temperature and a preset temperature; after the controlling to start the compressor when the first discharge pressure value is greater than both the first threshold value and the second threshold value, the method further comprises: acquiring a second discharge pressure value of the air conditioning equipment after the compressor is started for a first predetermined time; controlling to stop the compressor when the second discharge pressure value is less than or equal to a third threshold value; controlling to start the compressor again after the compressor is stopped for a second predetermined time.

2. The control method according to claim 1, characterized by, In one power-on period, the number of times of stopping the compressor cannot exceed a preset number threshold.

3. The control method according to claim 1, characterized by, The third threshold value is a minimum discharge pressure value at which the compressor is stably operated.

4. A control device for a heat pump used in an air conditioning apparatus, the heat pump including at least a compressor, characterized by, The method comprises: a first acquiring module, configured to acquire a first discharge pressure value of the air conditioning equipment before starting the compressor; a starting control module, configured to control to start the compressor when the first discharge pressure value is greater than both a first threshold value and a second threshold value, wherein the first threshold value is related to a minimum starting temperature of the heat pump, the first threshold value is a pressure value corresponding to the minimum starting temperature of the heat pump, and the second threshold value is related to a saturation pressure value of a refrigerant, the second threshold value is a saturation pressure value corresponding to a temperature value obtained based on a difference between a current environment temperature and a preset temperature; a second acquiring module, configured to acquire a second discharge pressure value of the air conditioning equipment after the compressor is started for a first predetermined time; a stopping control module, configured to control to stop the compressor when the second discharge pressure value is less than or equal to a third threshold value, and the starting control module is further configured to control to start the compressor again after the compressor is stopped for a second predetermined time.

5. A storage medium storing a computer program, characterized by The computer program is executed by a processor to implement the steps of the method in any one of claims 1 to 3.

6. A heat pump comprising at least a memory, a processor, said memory having stored thereon a computer program, characterized in that, The processor implements the steps of the method in any one of claims 1 to 3 when executing the computer program on the memory.

7. An air conditioning apparatus characterized by comprising: The heat pump comprises the heat pump in claim 6.

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