Compressor control method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of vehicle control, and provides a compressor control method and device, electronic equipment and a storage medium. The method comprises the steps that the high-pressure pressure of a compressor is obtained, and the high-pressure pressure of the compressor is the pressure of a high-pressure exhaust side refrigerant of the compressor; under the condition that the high pressure of the compressor is larger than a preset high-pressure threshold value, adjusting parameters of the compressor are obtained; the target high pressure reduction strategy is determined according to the adjusting parameters, and the compressor is controlled according to the target high pressure reduction strategy so as to reduce the high pressure of the compressor, the target high pressure reduction strategy is obtained under the condition that the high pressure of the compressor is larger than the preset high pressure threshold value, and the purpose of reducing the high pressure of the compressor when the compressor has the shutdown risk is achieved. The target high pressure reduction strategy is obtained in time, the compressor is controlled, the high pressure of the compressor is reduced, normal operation of the compressor is guaranteed, and the problem that the compressor of the heat pump air conditioner is too high in high pressure, and consequently the air conditioner cannot refrigerate is solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a control method, device, electronic device and storage medium for a compressor. Background Art

[0002] With the rapid development of science and technology, vehicles have become an important means of transportation for people's daily travel, and users have increasingly higher requirements for the comfort of the in-car environment, especially the comfort of the air-conditioning system.

[0003] In the automotive air conditioning system, more and more car companies are using heat pump air conditioning systems in order to save energy and increase driving range. However, the problem that comes with it is that in high temperature environments, the heat pump air conditioning will cause the compressor to shut down due to high pressure protection, making the air conditioning unable to cool, and the comfort feeling is extremely poor, which seriously affects the passengers' car experience. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a compressor control method, device, electronic device and storage medium to solve the problem in the related art that the compressor of the heat pump air conditioner cannot cool due to excessive high pressure of the air conditioner.

[0005] According to a first aspect of an embodiment of the present application, a method for controlling a compressor is provided, the method comprising: obtaining the high-pressure pressure of the compressor, the high-pressure pressure of the compressor being the pressure of the refrigerant on the high-pressure exhaust side of the compressor; when the high-pressure pressure of the compressor is greater than a preset high-pressure threshold, obtaining an adjustment parameter of the compressor; determining a target high-pressure reduction strategy based on the adjustment parameter, and controlling the compressor based on the target high-pressure reduction strategy to reduce the high-pressure pressure of the compressor.

[0006] According to a second aspect of an embodiment of the present application, a control device for a compressor is provided, the device comprising: an acquisition module for acquiring the high-pressure pressure of the compressor, the high-pressure pressure of the compressor being the pressure of the refrigerant on the high-pressure exhaust side of the compressor; the acquisition module is also used to acquire an adjustment parameter of the compressor when the high-pressure pressure of the compressor is greater than a preset high-pressure threshold; a control module is used to determine a target high-pressure reduction strategy based on the adjustment parameter, and control the compressor according to the target high-pressure reduction strategy to reduce the high-pressure pressure of the compressor.

[0007] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.

[0008] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, which stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0009] Compared with the prior art, the beneficial effects of the embodiments of the present application are as follows: the method in the embodiments of the present application obtains the high-pressure pressure of the compressor, which is the pressure of the refrigerant on the high-pressure exhaust side of the compressor; when the high-pressure pressure of the compressor is greater than a pre-set high-pressure threshold, the adjustment parameters of the compressor are obtained; a target high-pressure reduction strategy is determined according to the adjustment parameters, and the compressor is controlled according to the target high-pressure reduction strategy to reduce the high-pressure pressure of the compressor, wherein the present application obtains the target high-pressure reduction strategy when the high-pressure pressure of the compressor is greater than a pre-set high-pressure threshold, thereby achieving the goal of timely obtaining the target high-pressure reduction strategy when there is a risk of shutdown of the compressor, controlling the compressor, reducing the high-pressure pressure of the compressor, ensuring the normal operation of the compressor, and avoiding the problem that the high-pressure pressure of the compressor of the heat pump air conditioner is too high, resulting in the air conditioner being unable to cool. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 is a flow chart of a compressor control method provided in an embodiment of the present application;

[0012] Figure 2 is a flow chart of another compressor control method provided in an embodiment of the present application;

[0013] Figure 3 is a flow chart of another compressor control method provided in an embodiment of the present application;

[0014] Figure 4 is a flow chart of another compressor control method provided in an embodiment of the present application;

[0015] Figure 5 is a flow chart of another optional compressor control method provided in an embodiment of the present application;

[0016] Figure 6 is a flow chart of another optional compressor control method provided in an embodiment of the present application;

[0017] Figure 7is a flow chart of another optional compressor control method provided in an embodiment of the present application;

[0018] Figure 8 is a structural schematic diagram of a compressor control device provided in an embodiment of the present application;

[0019] Fig. 9 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0020] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0021] A method and device for controlling a compressor according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0022] Figure 1 A compressor control method provided in an embodiment of the present application is as follows: Figure 1 As shown, the method includes:

[0023] S101, obtaining the high pressure of the compressor, where the high pressure of the compressor is the pressure of the refrigerant on the high pressure exhaust side of the compressor;

[0024] S102, when the high pressure of the compressor is greater than a preset high pressure threshold, obtaining adjustment parameters of the compressor;

[0025] S103: determining a target high pressure reduction strategy according to the adjustment parameters, and controlling the compressor according to the target high pressure reduction strategy to reduce the high pressure of the compressor.

[0026] It can be understood that the control method of the compressor provided in this example is applied to vehicles, and the above-mentioned vehicles include vehicles with automatic driving or intelligent driving (including vehicles with manned functions (such as cars, buses, large buses, minibuses, etc.), vehicles with cargo functions (such as ordinary trucks, vans, trailers, closed trucks, tank trucks, flatbed trucks, container trucks, dump trucks, special structure trucks), special vehicles (such as logistics distribution vehicles, automatic guided transport vehicles AGV, patrol cars, cranes, cranes, excavators, bulldozers, forklifts, rollers, loaders, off-road engineering vehicles, armored engineering vehicles, sewage treatment vehicles, sanitation vehicles, vacuum trucks, floor washing vehicles, sprinkler trucks, sweeping robots, food delivery robots, shopping guide robots, lawn mowers, golf carts, etc.), vehicles with entertainment functions (such as entertainment vehicles, amusement park automatic driving devices, balance cars, etc.), rescue vehicles (such as fire trucks, ambulances, power repair vehicles, engineering rescue vehicles, etc.)), etc.

[0027] It is understandable that the above-mentioned vehicles use heat pump air conditioners. The compressor is the core component of the heat pump air conditioner and determines whether the heat pump air conditioner can operate normally. Among them, the heat pump air conditioner is an air conditioning system that realizes cooling and heating through the reverse Carnot cycle. Its core working process includes: absorbing indoor heat, transferring heat to the outside through the refrigerant, and lowering the indoor temperature (cooling mode); absorbing outdoor heat, transferring heat to the indoor through the refrigerant, and raising the indoor temperature (heating mode). Heat pump air conditioners rely on the phase change of the refrigerant. and heat transfer, and the compressor is the key component that drives the refrigerant to circulate in the system.

[0028] It can be understood that the high pressure of the compressor refers to the pressure of the refrigerant on the high-pressure exhaust side of the compressor. High pressure pressure is an important parameter to measure the operating status and performance of the compressor, and directly affects the temperature regulation (cooling or heating) efficiency and stability of the heat pump air conditioner. If the high pressure of the compressor is too high, it will cause the compressor to shut down; in order to avoid the problem that the high pressure of the compressor is too high, which will cause the compressor to shut down, this application will monitor the high pressure pressure of the compressor when the compressor is started to obtain the high pressure pressure of the compressor.

[0029] Among them, the present application can be used to periodically obtain the high-pressure pressure of the compressor. The specific acquisition period can be flexibly set by relevant personnel according to actual needs. For example, the high-pressure pressure of the compressor is obtained in a period of 20 seconds; the present application can also obtain the high-pressure pressure of the compressor in real time.

[0030] A high-pressure threshold is pre-set in the present application, and the high-pressure threshold is a safe high-pressure value set by relevant personnel according to actual conditions. When the high-pressure pressure of the compressor is greater than the high-pressure threshold, the compressor is at risk of shutting down; based on this, after obtaining the high-pressure pressure of the compressor, the present application will compare the high-pressure pressure of the compressor with the pre-set high-pressure threshold. When the high-pressure pressure of the compressor is greater than the pre-set high-pressure threshold, the adjustment parameter of the compressor is obtained, and the adjustment parameter is used to determine a target high-pressure reduction strategy, and the target high-pressure reduction strategy is used to reduce the high-pressure pressure of the compressor.

[0031] It can be understood that the present application is pre-set with at least two high pressure reduction strategies, and the present application will determine a target high pressure reduction strategy suitable for the current state of the compressor from the at least two high pressure reduction strategies according to the determined adjustment parameters.

[0032] After determining the target high-pressure reduction strategy, the present application will control the compressor according to the target high-pressure reduction strategy to reduce the high-pressure pressure of the compressor, thereby avoiding the compressor shutdown problem caused by excessive high-pressure pressure, thereby improving the user's driving experience.

[0033] According to the technical solution provided in the embodiment of the present application, the high-pressure pressure of the compressor is obtained, and the high-pressure pressure of the compressor is the pressure of the refrigerant on the high-pressure exhaust side of the compressor; when the high-pressure pressure of the compressor is greater than a pre-set high-pressure threshold, the adjustment parameters of the compressor are obtained; the target high-pressure reduction strategy is determined according to the adjustment parameters, and the compressor is controlled according to the target high-pressure reduction strategy to reduce the high-pressure pressure of the compressor. Among them, the present application obtains the target high-pressure reduction strategy when the high-pressure pressure of the compressor is greater than a pre-set high-pressure threshold, so that when there is a risk of shutdown of the compressor, the target high-pressure reduction strategy is obtained in time, the compressor is controlled, and the high-pressure pressure of the compressor is reduced to ensure the normal operation of the compressor, thereby avoiding the problem that the high-pressure pressure of the heat pump air conditioner compressor is too high, resulting in the air conditioner being unable to cool.

[0034] In some embodiments, the adjustment parameters include the vehicle interior temperature and the compressor speed of the compressor, such as Figure 2 As shown, the target high pressure reduction strategy is determined according to the adjustment parameters, including:

[0035] S201, comparing the temperature inside the vehicle with a preset temperature threshold, and when the temperature inside the vehicle is greater than the temperature threshold, using the first high pressure reduction strategy as the target high pressure reduction strategy; and / or

[0036] S202: Compare the compressor speed with a preset compressor speed threshold, and when the compressor speed is greater than the compressor speed threshold, use the second high pressure reduction strategy as the target high pressure reduction strategy.

[0037] It is understandable that when the temperature inside the vehicle is high, if the refrigerant in the compressor flows slowly, the high pressure of the compressor will increase, which will cause the compressor to shut down due to high pressure protection. Based on the above principle, the present application sets a first high pressure reduction strategy related to the temperature inside the vehicle.

[0038] Specifically, the present application will compare the temperature inside the vehicle with a preset temperature threshold, and when the temperature inside the vehicle is greater than the temperature threshold, the first high-pressure reduction strategy will be used as the target high-pressure reduction strategy.

[0039] It can be understood that the high pressure of the compressor is determined by the exhaust process of the compressor. Specifically, the compressor generates a high-pressure exhaust side and a low-pressure suction side by compressing the refrigerant gas. According to the above principle, the higher the compressor speed of the compressor, the greater the exhaust pressure of the compressor is, and the higher the high pressure is. The lower the compressor speed of the compressor, the lower the exhaust pressure of the compressor is. Based on the above principle, the present application sets a second high-pressure reduction strategy related to the compressor speed.

[0040] Following the above example, the present application compares the compressor speed with a preset compressor speed threshold, and when the compressor speed is greater than the compressor speed threshold, uses the second high pressure reduction strategy as the target high pressure reduction strategy.

[0041] According to the above analysis, the first high pressure reduction strategy and the second high pressure reduction strategy do not conflict with each other. Therefore, the first high pressure reduction strategy and the second high pressure reduction strategy can be used as target high pressure reduction strategies together or as target high pressure reduction strategies separately, which will not be elaborated here.

[0042] According to the technical solution provided in the embodiment of the present application, the temperature inside the vehicle is compared with a pre-set temperature threshold. When the temperature inside the vehicle is greater than the temperature threshold, the first high-pressure reduction strategy is used as the target high-pressure reduction strategy; and / or the compressor speed is compared with a pre-set compressor speed threshold. When the compressor speed is greater than the compressor speed threshold, the second high-pressure reduction strategy is used as the target high-pressure reduction strategy. The present application sets different high-pressure reduction strategies for different situations, thereby ensuring the normal operation of the compressor from multiple angles.

[0043] In some embodiments, Figure 3 As shown, when the target high pressure reduction strategy is the first high pressure reduction strategy, the compressor is controlled according to the target high pressure reduction strategy, including:

[0044] S301, determining a target opening degree according to the vehicle interior temperature and the compressor speed;

[0045] S302: Acquire the current opening of the expansion valve of the compressor, and when the target opening is greater than the current opening, control the opening of the expansion valve according to the target opening to reduce the high pressure of the compressor.

[0046] It can be understood that the present application pre-sets the correspondence between temperature, rotation speed and opening degree, and the correspondence can be stored in any form such as table, hash, key-value pair, database, etc., and this example is not limited to this.

[0047] After obtaining the in-vehicle temperature and the compressor speed, this example matches the in-vehicle temperature and the compressor speed with the above-mentioned preset corresponding relationship between temperature, speed and opening degree to obtain the target opening degree.

[0048] For example, the correspondence between the above-mentioned preset temperature, compressor speed and opening degree is stored in a table form, as shown in the following Table 1:

[0049] Table 1: Correspondence between temperature, speed and opening

[0050]

[0051] Among them, when the temperature inside the car is 32 degrees and the compressor speed is 1000, the target opening can be obtained by looking up the table as 70; when the temperature inside the car is 32 degrees and the compressor speed is 1500, the target opening can be obtained by looking up the table as 70... When the temperature inside the car is 45 degrees and the compressor speed is 6500, the target opening can be obtained by looking up the table as 135. It can be understood that the temperature and speed not involved in the above Table 1 can obtain the corresponding opening by interpolation method, prediction method, etc., and this example will not be repeated here.

[0052] It is understandable that the opening of the expansion valve will affect the flow of the refrigerant. In order to avoid the expansion valve opening being too low, affecting the flow of the refrigerant, causing the exhaust pressure to increase and thus causing the compressor to shut down due to high-pressure protection. After obtaining the target opening, the present application will obtain the current opening of the expansion valve of the compressor, and compare the target opening with the current opening. When the target opening is greater than the current opening, the expansion valve opening is controlled according to the target opening to increase the expansion valve opening, improve the flow efficiency of the refrigerant, and reduce the high-pressure pressure of the compressor; when the target opening is less than or equal to the current opening, the expansion valve opening is controlled according to the current opening.

[0053] According to the technical solution provided in the embodiment of the present application, the target opening is determined according to the temperature in the vehicle and the speed of the compressor; the current opening of the expansion valve of the compressor is obtained, and when the target opening is greater than the current opening, the opening of the expansion valve is controlled according to the target opening to reduce the high-pressure pressure of the compressor, thereby increasing the opening of the expansion valve, improving the flow efficiency of the refrigerant, reducing the high-pressure pressure of the compressor, and avoiding the problem of the expansion valve opening being too low, affecting the flow of the refrigerant, causing the exhaust pressure to increase, and thus causing the compressor to shut down due to high-pressure protection.

[0054] In some embodiments, Figure 4 As shown, the expansion valve opening is controlled according to the target opening, including:

[0055] S401, adjusting the opening of the expansion valve according to the target opening so that the opening of the expansion valve is the target opening;

[0056] S402, monitoring the high pressure of the compressor, if the high pressure of the compressor is in an increasing state, increasing the target opening according to a preset increasing rule, and adjusting the opening of the expansion valve according to the increased target opening.

[0057] It can be understood that the target opening determined above is the minimum opening of the expansion valve. After determining the target opening, the present application will adjust the opening of the expansion valve according to the target opening so that the opening of the expansion valve reaches the target opening.

[0058] After adjusting the opening of the expansion valve to the target opening, in order to avoid failure to improve the flow efficiency of the refrigerant after adjusting the expansion valve, resulting in continuous increase in the high-pressure pressure of the compressor and triggering the compressor shutdown problem, the present application will also monitor the high-pressure pressure of the compressor. If the high-pressure pressure of the compressor is in an increasing state, the present application will increase the target opening according to the preset growth rules, and adjust the opening of the expansion valve according to the increased target opening until the high-pressure pressure of the compressor is reduced to the expected value (the expected value is a value set by relevant personnel according to actual needs) or until the opening of the expansion valve increases to the maximum opening (the maximum opening is an opening set by relevant personnel according to the actual situation of the expansion valve).

[0059] According to the technical solution provided in the embodiment of the present application, the opening of the expansion valve is adjusted according to the target opening so that the opening of the expansion valve is the target opening; the high-pressure pressure of the compressor is monitored, and if the high-pressure pressure of the compressor is in an increasing state, the target opening is increased according to a preset growth rule, and the opening of the expansion valve is adjusted according to the increased target opening. This solution monitors the high-pressure pressure of the compressor, and when the high-pressure pressure is in an increasing state, further increases the opening of the expansion valve, further improves the flow efficiency of the refrigerant, and further reduces the high-pressure pressure of the compressor, thereby avoiding the problem that the expansion valve opening is too low, affecting the flow of the refrigerant, causing the exhaust pressure to increase, and thus causing the compressor to shut down due to high-pressure protection.

[0060] In some embodiments, Figure 5 As shown, when the target high pressure reduction strategy is the second high pressure reduction strategy, the compressor is controlled according to the target high pressure reduction strategy, including:

[0061] S501, matching the high pressure of the compressor with a preset pressure threshold interval to determine a target pressure threshold interval corresponding to the high pressure;

[0062] S502, determining a weight value corresponding to the target pressure threshold interval, and performing weighted processing on the compressor speed according to the determined weight value to obtain a target compressor speed, where the weight value is a number greater than 0 and less than 1;

[0063] S503: Control the compressor according to the target compressor speed to reduce the high pressure of the compressor.

[0064] It can be understood that at least two pressure threshold intervals are pre-set in the present application, and different pressure threshold intervals correspond to different weight values. After obtaining the high pressure of the compressor, the present application will match the high pressure pressure with the pre-set pressure threshold interval to determine the target pressure threshold interval corresponding to the high pressure pressure, and then determine the corresponding weight value.

[0065] Exemplarily, at least two pressure threshold intervals include a first pressure threshold interval {x|A≤x≤B} and a second pressure threshold interval {x|x≥B} (the values ​​of A and B are flexibly set by relevant personnel according to actual needs, and the value of A is the high pressure threshold in step S102), wherein the weight value corresponding to the first pressure threshold interval is 0.8, and the weight value corresponding to the second pressure threshold interval is 0.5. After the high pressure pressure of the compressor is subsequently obtained, the present application matches the high pressure pressure of the compressor with the above-mentioned first pressure threshold interval and the second pressure threshold interval. If the high pressure pressure of the compressor belongs to the first pressure threshold interval, the weight value is determined to be 0.8; if the high pressure pressure of the compressor belongs to the second pressure threshold interval, the weight value is determined to be 0.5.

[0066] It can be understood that after determining the weight value, the present application will perform weighted processing on the compressor speed according to the determined weight value to obtain the target compressor speed. Since the weight value is a number greater than 0 and less than 1, the target compressor speed must be less than the compressor speed, thereby achieving the effect of reducing the compressor speed. When the compressor speed of the compressor is reduced, the high-pressure pressure of the compressor will also decrease, and thus the present application achieves the reduction of the high-pressure pressure of the compressor.

[0067] It can be understood that after reducing the compressor speed of the compressor according to the second high-pressure reduction strategy, the present application can also execute the first high-pressure reduction strategy according to the target compressor speed to redetermine the target opening of the compressor expansion valve, which will not be repeated here.

[0068] According to the technical solution provided in the embodiment of the present application, the high pressure of the compressor is matched with a pre-set pressure threshold interval to determine the target pressure threshold interval corresponding to the high pressure pressure; the weight value corresponding to the target pressure threshold interval is determined, and the compressor speed is weighted according to the determined weight value to obtain the target compressor speed, where the weight value is a number greater than 0 and less than 1; the compressor is controlled according to the target compressor speed to reduce the high pressure pressure of the compressor.

[0069] In some embodiments, Figure 6 As shown, obtaining the high pressure of the compressor includes:

[0070] S601, obtaining the outside temperature of the vehicle;

[0071] S602: When the temperature outside the vehicle is not lower than a preset high temperature threshold, obtain the high pressure of the compressor.

[0072] It is understandable that the problem of the compressor shutting down due to excessive high pressure may occur only after the vehicle turns on the air conditioner in a high temperature environment. In order to avoid the waste of resources caused by the invalid execution of the above steps S101 to S103 and other steps, the present application will further obtain the vehicle's outdoor temperature and then compare the outdoor temperature with a pre-set high temperature threshold.

[0073] When the outside temperature is not lower than the preset high temperature threshold, the vehicle has started the air conditioner in a high temperature environment. At this time, the compressor may have a problem of excessive high pressure causing the compressor to shut down. Only then will the high pressure pressure of the compressor be obtained and subsequent steps will be executed. When the outside temperature is lower than the preset high temperature threshold, the vehicle is not in a high temperature environment, and the operating environment of the compressor is not a high temperature environment. There is no problem of excessive high pressure causing the compressor to shut down. At this time, the high pressure pressure of the compressor will not be obtained to avoid waste of resources.

[0074] For example, taking the high temperature threshold of 30 degrees as an example, when the outside temperature of the vehicle is not lower than 30 degrees, the high pressure of the compressor is obtained, and when the outside temperature of the vehicle is lower than 30 degrees, the high pressure of the compressor will not be obtained.

[0075] According to the technical solution provided in the embodiment of the present application, the outside temperature of the vehicle is obtained; when the outside temperature is not lower than a preset high temperature threshold, the high pressure of the compressor is obtained, thereby achieving the goal of obtaining the high pressure pressure of the compressor only under high temperature conditions, avoiding the problem of ineffective acquisition of the high pressure pressure of the compressor, which leads to waste of resources.

[0076] In some embodiments, Figure 7 As shown, after the compressor is controlled according to the target high pressure reduction strategy to reduce the high pressure of the compressor, the method further includes:

[0077] S701, obtaining the vehicle interior temperature and target temperature, where the target temperature is the temperature that the vehicle is expected to reach;

[0078] S702: Control the compressor according to the temperature difference between the vehicle interior temperature and the target temperature.

[0079] In some examples, controlling the compressor according to a target high-pressure reduction strategy to reduce the high-pressure pressure of the compressor may cause the cooling effect of the heat pump air conditioner to not match the effect expected by the user. In order to avoid this, the present application obtains the in-vehicle temperature and the target temperature, which is the temperature that the vehicle is expected to reach set by the user.

[0080] In some examples, the present application determines a temperature difference based on the in-vehicle temperature and a target temperature, and subsequently controls the compressor based on the temperature difference, thereby making the in-vehicle temperature approach the target temperature, thereby improving the user's car experience.

[0081] According to the technical solution provided in the embodiment of the present application, the vehicle's interior temperature and target temperature are obtained, and the target temperature is the temperature that the vehicle is expected to reach; based on the temperature difference between the interior temperature and the target temperature, the compressor is controlled to make the interior temperature approach the target temperature, thereby improving the user's car experience.

[0082] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present application, which will not be described one by one here.

[0083] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0084] This embodiment also provides a compressor control device, such as Figure 8 As shown, the device comprises:

[0085] An acquisition module 801 is used to acquire the high pressure of the compressor, where the high pressure of the compressor is the pressure of the refrigerant on the high pressure exhaust side of the compressor;

[0086] The acquisition module 801 is also used to acquire the adjustment parameters of the compressor when the high pressure of the compressor is greater than a preset high pressure threshold;

[0087] The control module 802 is used to determine a target high pressure reduction strategy according to the adjustment parameters, and control the compressor according to the target high pressure reduction strategy to reduce the high pressure of the compressor.

[0088] In some examples, the adjustment parameters include the temperature inside the vehicle and the compressor speed of the compressor. The control module 802 is also used to compare the temperature inside the vehicle with a preset temperature threshold. When the temperature inside the vehicle is greater than the temperature threshold, the first high-pressure reduction strategy is used as the target high-pressure reduction strategy; and / or, the compressor speed is compared with a preset compressor speed threshold. When the compressor speed is greater than the compressor speed threshold, the second high-pressure reduction strategy is used as the target high-pressure reduction strategy.

[0089] In some examples, the control module 802 is also used to determine the target opening according to the vehicle temperature and the compressor speed when the target high-pressure reduction strategy is the first high-pressure reduction strategy; obtain the current opening of the expansion valve of the compressor, and when the target opening is greater than the current opening, control the opening of the expansion valve according to the target opening to reduce the high-pressure pressure of the compressor.

[0090] In some examples, the control module 802 is also used to adjust the opening of the expansion valve according to the target opening so that the opening of the expansion valve is the target opening; monitor the high-pressure pressure of the compressor, and if the high-pressure pressure of the compressor is in an increasing state, increase the target opening according to a preset growth rule, and adjust the opening of the expansion valve according to the increased target opening.

[0091] In some examples, the control module 802 is also used to match the high pressure pressure of the compressor with a pre-set pressure threshold interval to determine the target pressure threshold interval corresponding to the high pressure pressure when the target high pressure reduction strategy is the second high pressure reduction strategy; determine the weight value corresponding to the target pressure threshold interval, and perform weighted processing on the compressor speed according to the determined weight value to obtain the target compressor speed, where the weight value is a number greater than 0 and less than 1; and control the compressor according to the target compressor speed to reduce the high pressure pressure of the compressor.

[0092] In some examples, the acquisition module 801 is also used to acquire the outside temperature of the vehicle; when the outside temperature is not lower than a preset high temperature threshold, the high pressure of the compressor is acquired.

[0093] In some examples, the control module 802 is further used to obtain the vehicle interior temperature and a target temperature, where the target temperature is a temperature that the vehicle is expected to reach; and the compressor is controlled according to the temperature difference between the vehicle interior temperature and the target temperature.

[0094] According to the technical solution provided in the embodiment of the present application, the control device of the compressor provided in the present embodiment obtains the high-pressure pressure of the compressor, which is the pressure of the refrigerant on the high-pressure exhaust side of the compressor; when the high-pressure pressure of the compressor is greater than a pre-set high-pressure threshold, the adjustment parameters of the compressor are obtained; a target high-pressure reduction strategy is determined according to the adjustment parameters, and the compressor is controlled according to the target high-pressure reduction strategy to reduce the high-pressure pressure of the compressor. In particular, when the high-pressure pressure of the compressor is greater than a pre-set high-pressure threshold, the present application obtains the target high-pressure reduction strategy, so that when there is a risk of shutdown of the compressor, the target high-pressure reduction strategy is obtained in time, the compressor is controlled, and the high-pressure pressure of the compressor is reduced to ensure the normal operation of the compressor, thereby avoiding the problem that the high-pressure pressure of the compressor of the heat pump air conditioner is too high, resulting in the air conditioner being unable to cool.

[0095] Fig. 9 Schematic diagram of an electronic device 9 provided in an embodiment of the present application. Fig. 9 As shown, the electronic device 9 of this embodiment includes: a processor 901, a memory 902, and a computer program 903 stored in the memory 902 and executable on the processor 901. When the processor 901 executes the computer program 903, the steps in each of the above-mentioned method embodiments are implemented. Alternatively, when the processor 901 executes the computer program 903, the function of each module / unit in each of the above-mentioned device embodiments is implemented.

[0096] The electronic device 9 may be a desktop computer, a notebook, a PDA, a cloud server, or other electronic device. The electronic device 9 may include, but is not limited to, a processor 901 and a memory 902. Those skilled in the art will appreciate that Fig. 9 The electronic device 9 is merely an example and does not limit the electronic device 9 , and may include more or less components than those shown in the figure, or different components.

[0097] The processor 901 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0098] The memory 902 may be an internal storage unit of the electronic device 9, for example, a hard disk or memory of the electronic device 9. The memory 902 may also be an external storage device of the electronic device 9, for example, a plug-in hard disk, a smart memory card (Smart Med ia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (FlashCard), etc. equipped on the electronic device 9. The memory 902 may also include both an internal storage unit of the electronic device 9 and an external storage device. The memory 902 is used to store computer programs and other programs and data required by the electronic device.

[0099] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of each functional unit and module is used as an example. In actual application, the above-mentioned function allocation can be completed by different functional units and modules as needed, 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 into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit, and the above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0100] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of each of the above-mentioned method embodiments when executed by the processor. The computer program may include computer program code, and the computer program code may be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier distance, telecommunication distance and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of regional requirements and patent practice. For example, in some areas, according to regional requirements and patent practice, the computer-readable medium does not include electric carrier distance and telecommunication distance.

[0101] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in each of the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of each embodiment of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for controlling a compressor, characterized in that: The method comprises: Obtaining the high pressure of the compressor, where the high pressure of the compressor is the pressure of the refrigerant on the high pressure exhaust side of the compressor; When the high pressure of the compressor is greater than a preset high pressure threshold, obtaining a regulating parameter of the compressor; A target high pressure reduction strategy is determined according to the adjustment parameter, and the compressor is controlled according to the target high pressure reduction strategy to reduce the high pressure of the compressor.

2. The method according to claim 1, characterized in that The adjustment parameters include the vehicle interior temperature and the compressor speed of the compressor, and determining the target high pressure reduction strategy according to the adjustment parameters includes: comparing the in-vehicle temperature with a preset temperature threshold, and when the in-vehicle temperature is greater than the temperature threshold, using a first high-pressure reduction strategy as the target high-pressure reduction strategy; and / or, The compressor speed is compared with a preset compressor speed threshold, and when the compressor speed is greater than the compressor speed threshold, a second high pressure reduction strategy is used as the target high pressure reduction strategy.

3. The method according to claim 2, characterized in that When the target high pressure reduction strategy is the first high pressure reduction strategy, controlling the compressor according to the target high pressure reduction strategy includes: determining a target opening degree according to the vehicle interior temperature and the compressor speed; The current opening of the expansion valve of the compressor is obtained, and when the target opening is greater than the current opening, the opening of the expansion valve is controlled according to the target opening to reduce the high pressure of the compressor.

4. The method according to claim 3, characterized in that Controlling the opening of the expansion valve according to the target opening includes: adjusting the opening of the expansion valve according to the target opening so that the opening of the expansion valve is the target opening; The high pressure of the compressor is monitored. If the high pressure of the compressor is in an increasing state, the target opening is increased according to a preset increasing rule, and the opening of the expansion valve is adjusted according to the increased target opening.

5. The method according to claim 2, characterized in that: When the target high pressure reduction strategy is the second high pressure reduction strategy, controlling the compressor according to the target high pressure reduction strategy includes: Matching the high pressure of the compressor with a preset pressure threshold interval to determine a target pressure threshold interval corresponding to the high pressure; Determine a weight value corresponding to the target pressure threshold interval, and perform weighted processing on the compressor speed according to the determined weight value to obtain a target compressor speed, wherein the weight value is a number greater than 0 and less than 1; The compressor is controlled according to the target compressor speed to reduce the high pressure of the compressor.

6. The method according to claim 1, characterized in that Get the high pressure of the compressor, including: Get the vehicle's outside temperature; When the vehicle exterior temperature is not lower than a preset high temperature threshold, the high pressure of the compressor is obtained.

7. The method according to claim 1, characterized in that After controlling the compressor according to the target high pressure reduction strategy to reduce the high pressure of the compressor, the method further includes: Acquiring a vehicle interior temperature and a target temperature, wherein the target temperature is a temperature that the vehicle is expected to reach; The compressor is controlled according to a temperature difference between the vehicle interior temperature and the target temperature.

8. A compressor control device, characterized in that: The device comprises: An acquisition module, used for acquiring the high-pressure pressure of the compressor, wherein the high-pressure pressure of the compressor is the pressure of the refrigerant on the high-pressure exhaust side of the compressor; The acquisition module is further used to acquire the adjustment parameter of the compressor when the high pressure of the compressor is greater than a preset high pressure threshold; A control module is used to determine a target high pressure reduction strategy according to the adjustment parameter, and control the compressor according to the target high pressure reduction strategy to reduce the high pressure of the compressor.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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