Compressor control method and device, readable storage medium and vehicle

Abstract

The application provides a compressor control method and device, a readable storage medium and a vehicle. The compressor control method comprises the following steps: in response to a compressor starting instruction, a first starting strategy is obtained as a current starting strategy; the compressor is controlled to start in the current starting strategy; if the compressor fails to start successfully after starting for a first preset number of times in the current starting strategy, a second starting strategy is determined; the starting speed of the compressor corresponding to the second starting strategy is smaller than that of the current starting strategy; the second starting strategy is determined as the current starting strategy, and the step of controlling the compressor to start in the current starting strategy is returned to be executed until the starting of the compressor meets a preset condition; the preset condition is that the compressor successfully starts, or the total number of starting of the compressor reaches a second preset number, or the total time length of starting of the compressor reaches a preset time length. The application can effectively ensure the starting speed of the compressor while realizing the liquid starting.

Description

Technical Field

[0001] This invention belongs to the field of equipment control technology, and more specifically, relates to a compressor control method and device, a readable storage medium, and a vehicle. Background Technology

[0002] Compressors are widely used in vehicle heat pump circuits. These circuits involve various modes, including cooling, heating, and dehumidification. In low-temperature environments, vehicles typically operate in heating and dehumidification modes. In such cases, after the compressor finishes its work and shuts down, a saturated mixture of gas and liquid can easily accumulate inside. In other words, liquid can easily accumulate inside the compressor at low ambient temperatures. When the compressor is carrying liquid, it may fail to start, thus affecting its normal operation.

[0003] Therefore, how to achieve liquid-laden start-up of the compressor has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a compressor control method and device, a readable storage medium, and a vehicle to solve the problem of compressor starting with liquid in the prior art.

[0005] A first aspect of the present invention provides a compressor control method, comprising:

[0006] In response to a compressor start command, a first start strategy is obtained and determined as the current start strategy; the current start strategy refers to the start strategy currently being used.

[0007] The compressor is controlled to start using the current start strategy; if the compressor fails to start after a first preset number of starts using the current start strategy, a second start strategy is determined; wherein the compressor start speed corresponding to the second start strategy is less than the compressor start speed corresponding to the current start strategy.

[0008] The second startup strategy is determined as the current startup strategy, and the process returns to the step of controlling the compressor to start with the current startup strategy until the startup of the compressor meets the preset conditions;

[0009] The preset conditions are: the compressor starts successfully, or the total number of times the compressor starts reaches a second preset number, or the total startup time of the compressor reaches a preset time.

[0010] In one possible implementation, the compressor control method further includes:

[0011] If the compressor fails to start successfully after the preset conditions for starting are met, the compressor will be powered off.

[0012] In one possible implementation, determining the second startup strategy includes:

[0013] The preset liquid-carrying start strategy is obtained based on the number of iterations, resulting in a second start strategy; wherein, the number of iterations refers to the number of times the current start strategy has been updated.

[0014] In one possible implementation, determining the second startup strategy includes:

[0015] A second startup strategy is obtained by lowering the rate of increase of compressor speed in the current startup strategy and / or increasing the runtime of the compressor at low speed in the current startup strategy.

[0016] Low speed refers to a speed lower than the preset speed.

[0017] In one possible implementation, the compressor control method further includes:

[0018] Multiple liquid-initiated start strategies are preset, and the mapping relationship between different iteration numbers and each liquid-initiated start strategy is defined;

[0019] The step of obtaining the preset liquid-based initiation strategy based on the number of iterations includes:

[0020] The preset liquid-based start-up strategy is obtained based on the number of iterations and the mapping relationship.

[0021] In one possible implementation, reducing the rate of increase of compressor speed in the current startup strategy and / or increasing the runtime of the compressor at low speed in the current startup strategy includes:

[0022] The compressor speed growth rate in the current startup strategy is reduced by a first preset step size, and / or the compressor runtime at low speed in the current startup strategy is increased by a second preset step size.

[0023] In one possible implementation, the preset liquid-based start-up strategy is:

[0024] The compressor is controlled to start running at a first speed; the compressor speed is controlled to increase at a first rate starting from the first speed within a first duration;

[0025] After the compressor starts for the first duration, the compressor speed is controlled to increase at a second speed until the compressor speed reaches a preset speed.

[0026] Once the compressor reaches the preset speed, the compressor is controlled to respond to the target speed.

[0027] Wherein, the second speed is greater than the first speed, and the target rotational speed is the rotational speed determined based on the compressor start command.

[0028] A second aspect of the present invention provides a compressor control device, comprising:

[0029] The instruction response module is used to respond to the compressor start instruction, obtain the first start strategy, and determine the first start strategy as the current start strategy; the current start strategy refers to the start strategy currently being used.

[0030] The strategy determination module is used to control the compressor to start with the current start strategy; if the compressor fails to start after a first preset number of starts with the current start strategy, a second start strategy is determined; wherein the compressor start speed corresponding to the second start strategy is less than the compressor start speed corresponding to the current start strategy.

[0031] The strategy switching module is used to determine the second startup strategy as the current startup strategy and return to the step of controlling the compressor to start with the current startup strategy until the startup of the compressor meets the preset conditions;

[0032] The preset conditions are: the compressor starts successfully, or the total number of times the compressor starts reaches a second preset number, or the total startup time of the compressor reaches a preset time.

[0033] A third aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the compressor control method described above.

[0034] In a fourth aspect, the present invention provides a vehicle including a control terminal, the control terminal including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the compressor control method described above.

[0035] The beneficial effects of the compressor control method and apparatus, readable storage medium, and vehicle provided in the embodiments of the present invention are as follows:

[0036] To achieve liquid-carrying start-up of the compressor, this invention provides a multi-stage start-up scheme. First, a preset first start-up strategy is acquired and used as the current start-up strategy. The compressor is then directly controlled to start based on this strategy. If multiple starts using the current strategy fail, the start-up strategy is switched to a second start-up strategy with a lower start-up speed, and the compressor is then controlled to start using the second start-up strategy. This process continues until the compressor starts successfully. Unlike existing technologies that determine whether the compressor is carrying liquid based on ambient temperature or compressor running time and then adopt a liquid-carrying start-up strategy, this invention achieves liquid-carrying start-up without requiring additional data.

[0037] Furthermore, considering that the compressor can start successfully at a relatively high starting speed even when it is carrying liquid, unlike the prior art which "directly adopts a liquid-carrying start strategy when it is determined that the compressor is carrying liquid", the embodiments of the present invention gradually select a starting strategy with a lower starting speed, thereby ensuring that the compressor can be started with liquid as quickly as possible.

[0038] In summary, the embodiments of the present invention can effectively ensure the starting speed of the compressor while achieving liquid-carrying start-up, thus effectively solving the problems of the prior art. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic flowchart of a compressor control method provided in an embodiment of the present invention;

[0041] Figure 2 A schematic flowchart of a compressor control method provided in another embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of various states of a compressor under overload according to an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of a compressor liquid-carrying start-up strategy provided in an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of a compressor start-up strategy when it is not carrying liquid, according to an embodiment of the present invention.

[0045] Figure 6This is a structural block diagram of a compressor control device provided in an embodiment of the present invention;

[0046] Figure 7 This is a schematic block diagram of a control terminal provided in an embodiment of the present invention. Detailed Implementation

[0047] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0048] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0049] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating a compressor control method according to an embodiment of the present invention. The compressor control method includes:

[0050] S101: In response to the compressor start command, obtain the first start strategy and determine the first start strategy as the current start strategy. Here, the current start strategy refers to the start strategy currently being used.

[0051] In this embodiment, the compressor start command may include the compressor's enable signal, target speed, and power limit information. The compressor start command can be issued by a controller that starts the compressor (such as an air conditioning controller).

[0052] In this embodiment, the initial first start-up strategy (i.e., the first start-up strategy in step S101) can be a pre-set start-up strategy for compressors without liquid. That is, when a compressor start-up command is received, the compressor can be started directly using the start-up strategy for compressors without liquid.

[0053] S102: Control the compressor to start using the current start strategy. If the compressor fails to start after a first preset number of starts using the current start strategy, then determine the second start strategy. The compressor start speed corresponding to the second start strategy is lower than the compressor start speed corresponding to the current start strategy.

[0054] In this embodiment, the compressor start-up speed corresponding to a certain start-up strategy refers to the speed of the process from "starting the compressor based on the start-up strategy to starting the compressor to respond to the target speed". It should be noted that the start-up strategy is no longer executed when the compressor starts responding to the target speed. The aforementioned target speed is the control target of the compressor speed, that is, the speed carried by the aforementioned compressor start-up command.

[0055] In this embodiment, the compressor start-up speed corresponding to the second start-up strategy is less than the compressor start-up speed corresponding to the current start-up strategy, which can include the following two situations:

[0056] The first scenario: "The compressor speed increase rate set in the second startup strategy" is less than "the compressor speed increase rate set in the current startup strategy".

[0057] The second scenario: "The compressor's operating time at low speed as set in the second startup strategy" is greater than "The compressor's operating time at low speed as set in the current startup strategy". Here, a speed lower than a preset speed is considered a low speed.

[0058] S103: Determine the second startup strategy as the current startup strategy, and return to the execution steps of controlling the compressor to start with the current startup strategy until the compressor startup meets the preset conditions.

[0059] The preset conditions are: the compressor starts successfully, or the total number of compressor starts reaches the second preset number, or the total start time of the compressor reaches the preset time.

[0060] In this embodiment, the total number of compressor starts refers to the number of times the compressor starts from the moment the compressor starts in response to the compressor start command. The total compressor start time refers to the duration from the moment the compressor starts in response to the compressor start command until the current moment.

[0061] In this embodiment, if the compressor fails to start successfully after multiple attempts using the current starting strategy, a second starting strategy is determined and adopted as the current starting strategy. This strategy controls the compressor startup at a lower speed to improve the success rate. If the current starting strategy still fails to start the compressor, a new second starting strategy—that is, a starting strategy with an even lower startup speed—is determined and adopted as the current starting strategy to control the compressor startup until the compressor starts successfully or the total number of starts / total startup time reaches a certain condition. In other words, the second starting strategy is essentially the compressor's liquid-carrying starting strategy.

[0062] In this embodiment, a second startup strategy is determined during each iteration (i.e., each time step S102 is executed), and the second startup strategy determined in each iteration is different. As described in step S102, the compressor startup speed corresponding to the second startup strategy in the previous iteration will be greater than the compressor startup speed corresponding to the second startup strategy in the current iteration.

[0063] In this embodiment, the first preset number of times, the second preset number of times, the preset duration, etc., can be set according to actual needs.

[0064] In this embodiment, the first preset number of times step S102 is executed each time can be different. For example, the first preset number of times step S102 is executed for the first time can be 4, and the first preset number of times step S102 is executed for the second time can be 3.

[0065] As described above, to achieve liquid-carrying start-up of the compressor, this embodiment of the invention provides a multi-stage start-up scheme. Specifically, a preset first start-up strategy is first obtained and used as the current start-up strategy. The compressor is then directly controlled to start based on the current start-up strategy. If multiple starts using the current start-up strategy fail, the start-up strategy is switched to a second start-up strategy with a lower start-up speed, and the compressor is then controlled to start using the second start-up strategy. This process continues until the compressor starts successfully. Unlike existing technologies that "determine whether the compressor is carrying liquid based on ambient temperature or compressor running time and then adopt a liquid-carrying start-up strategy," this embodiment of the invention achieves liquid-carrying start-up without requiring additional data.

[0066] Furthermore, considering that the compressor can start successfully at a relatively high starting speed even when it is carrying liquid, unlike the prior art which "directly adopts a liquid-carrying start strategy when it is determined that the compressor is carrying liquid", the embodiments of the present invention gradually select a starting strategy with a lower starting speed, thereby ensuring that the compressor can be started with liquid as quickly as possible.

[0067] In summary, the embodiments of the present invention can effectively ensure the starting speed of the compressor while achieving liquid-carrying start-up, thus effectively solving the problems of the prior art.

[0068] In one possible implementation, the compressor control method further includes:

[0069] If the compressor fails to start successfully after the preset conditions for starting are met, the compressor will be powered off.

[0070] In this embodiment, if the compressor fails to start successfully after the preset conditions are met, the compressor can be powered off, or the power to the entire vehicle containing the compressor can be directly powered off to perform a power-on initialization of the entire vehicle.

[0071] In this embodiment, reference can be made to Figure 2 , Figure 2 Taking the example of the air conditioner controller sending a compressor start command and step S102 being executed twice, a compressor control process is given. Figure 2 In the process, upon receiving a compressor start command, the first start strategy can be obtained (for example, the start strategy when the compressor is not carrying liquid). This first start strategy is then used as the current start strategy, and the compressor is controlled to operate according to the first start strategy (i.e.,... Figure 2 If the compressor starts using the original strategy, and it starts successfully using the first startup strategy, then it can enter the normal control phase after a successful compressor start-up. If it fails to start using the first startup strategy, the cause of the fault can be determined, and the compressor can be started using the first startup strategy (corresponding to the original strategy). Figure 2 The original strategy in the system is used to restart the compressor. If the compressor fails to start successfully after n1 restarts (i.e., the first preset number of restarts) using the first startup strategy, an overload fault report can be submitted, and the second startup strategy (i.e., the original strategy in the system) can be determined. Figure 2 The liquid-carrying start strategy in the middle) determines the second start strategy as the current start strategy, that is, controls the compressor to start with the second start strategy.

[0072] Based on this, if the second starting strategy is successful, the compressor can enter the normal control phase after successful startup. If the second starting strategy fails to start, a restart will be performed using the second starting strategy. If the compressor fails to start after n2 restarts using the second starting strategy, and the compressor startup has met the preset conditions, the compressor power can be cut off. Based on this, rapid liquid-loaded compressor startup can be achieved.

[0073] exist Figure 2 Based on this, you can refer to Figure 3 If the compressor fails to start, it can be restarted after a preset interval. Specifically, starting from the compressor overload warning, assuming the preset conditions for compressor startup are met after 5 overload restarts, and the compressor still fails to start after 5 overload restarts, the corresponding relationships for the number of overload restarts, the interval between overload restarts, the compressor overload state (high level indicates overload), the compressor overload stop state (high level indicates compressor overload stop), and the compressor state (low level indicates compressor restart) can be found in the following table. Figure 3 .like Figure 3 As shown, the compressor will continue to restart using a certain startup strategy until the startup conditions are met. If the compressor still fails to start successfully after the startup conditions are met, the compressor will be powered off to avoid unnecessary energy waste.

[0074] In one possible implementation, determining the second startup strategy includes:

[0075] The preset liquid-carrying initiation strategy is obtained based on the number of iterations, resulting in a second initiation strategy. Here, the number of iterations refers to the number of times the current initiation strategy has been updated.

[0076] In this embodiment, the number of iterations can also be understood as: the number of times the second startup strategy is determined, or the number of times step S102 is executed.

[0077] In this embodiment, multiple liquid-carrying initiation strategies can be pre-defined, and the mapping relationship between the number of iterations and the multiple liquid-carrying initiation strategies can be marked. When a second initiation strategy needs to be determined, the corresponding liquid-carrying initiation strategy can be obtained based on the number of iterations as the second initiation strategy. Specifically, multiple liquid-carrying initiation strategies with different initiation speeds can be preset, and the multiple liquid-carrying initiation strategies can be sorted in descending order of initiation speed. Subsequently, the liquid-carrying initiation strategy with the corresponding sorting number can be directly selected based on the number of iterations. For example, when the number of iterations is 1, the liquid-carrying initiation strategy with sorting number 1 is selected. When the number of iterations is 2, the liquid-carrying initiation strategy with sorting number 2 is selected, and so on.

[0078] In other words, in one possible implementation, the compressor control method also includes:

[0079] Multiple liquid-initiated start strategies are preset, and the mapping relationship between different iteration numbers and each liquid-initiated start strategy is defined.

[0080] The preset liquid-based initiation strategy is obtained based on the number of iterations, including:

[0081] The preset liquid-based initiation strategy is obtained based on the number of iterations and the mapping relationship.

[0082] In one possible implementation, determining the second startup strategy includes:

[0083] A second startup strategy is obtained by reducing the rate of increase of compressor speed in the current startup strategy and / or increasing the runtime of the compressor at low speed in the current startup strategy.

[0084] Low speed refers to a speed lower than the preset speed.

[0085] In addition to the method for determining the second startup strategy described above, this embodiment also provides a method for determining the second startup strategy, that is, determining the second startup strategy includes: obtaining a preset liquid-carrying startup strategy based on the number of iterations to obtain the second startup strategy; or, reducing the growth rate of the compressor speed in the current startup strategy and / or increasing the running time of the compressor at low speed in the current startup strategy to obtain the second startup strategy.

[0086] In this embodiment, a second starting strategy can be obtained by automatically reducing the compressor speed increase rate in the current starting strategy, or by automatically increasing the compressor's operating time at low speed in the current starting strategy, or by simultaneously automatically reducing the compressor speed increase rate and automatically increasing the compressor's operating time at low speed in the current starting strategy. In other words, a liquid-laden start-up of the compressor can be achieved by using a lower speed increase rate and a longer low-speed operating time.

[0087] In one possible implementation, the rate of increase of compressor speed in the current startup strategy is reduced, and / or the runtime of the compressor at low speed in the current startup strategy is increased, including:

[0088] The compressor speed growth rate in the current startup strategy is reduced by a first preset step size, and / or the compressor runtime at low speed in the current startup strategy is increased by a second preset step size.

[0089] In this embodiment, the first preset step size and the second preset step size are positively correlated; that is, the larger the first preset step size, the larger the second preset step size.

[0090] In this embodiment, the method for determining the first preset step size and the second preset step size can be as follows:

[0091] The temperature and humidity of the environment around the compressor, as well as the compressor's downtime, are detected. Based on the compressor's downtime, the aforementioned temperature and humidity, the probability of liquid carryover in the compressor is determined. Based on the probability of liquid carryover in the compressor, a first preset step size and a second preset step size are determined.

[0092] The first preset step size and the second preset step size are both positively correlated with the aforementioned probability of liquid inclusion.

[0093] Alternatively, the temperature of the compressor's outer surface can be detected, and a first preset step size and a second preset step size can be determined based on the temperature of the compressor's outer surface. In this case, both the first preset step size and the second preset step size are negatively correlated with the aforementioned temperature of the compressor's outer surface.

[0094] In one possible implementation, the preset liquid-based start-up strategy is as follows:

[0095] The compressor is controlled to start running at a first speed. Within a first duration, the compressor speed is controlled to increase from the first speed at a first rate.

[0096] After the compressor has been running for a certain period of time, the compressor speed is controlled to increase at a second speed until the compressor speed reaches the preset speed.

[0097] Once the compressor reaches the preset speed, the compressor is controlled to respond to the target speed.

[0098] The second speed is greater than the first speed, and the target speed is the speed determined based on the compressor start command.

[0099] In this embodiment, the startup parameters for different liquid-carrying startup strategies may differ. The aforementioned startup parameters include a first rotation speed, a first duration, a first speed, a second speed, and a preset rotation speed.

[0100] In this embodiment, reference can be made to Figure 4 , Figure 4 In this context, 50 rpm / s is the first speed, and 500-1000 rpm / s is the second speed range. For example... Figure 4 As shown, the preset liquid-carrying start-up strategy can be a multi-stage start-up strategy. In the first stage, the compressor starts at a lower speed increase rate (i.e., the first speed). After a certain duration, in the second stage, the compressor starts at a higher speed increase rate (i.e., the second speed) until the preset speed is reached, and then responds to the target speed in the compressor start-up command. Based on this, the probability of successful compressor start-up can be effectively increased, achieving liquid-carrying start-up of the compressor.

[0101] Based on this, it can be referred to together. Figure 5 , Figure 5 A startup strategy for a compressor without liquid is shown. Figure 5 In this context, 300-6000 rpm / s represents the rate of increase in engine speed. (From...) Figure 5 It can be seen that the speed increase rate does not have a particularly obvious segmentation; the starting strategy for compressors without liquid starts with a relatively high speed increase rate until they enter the normal operating stage. Compared to Figure 4 The liquid-based start-up strategy shown is as follows: Figure 5 The startup strategy shown results in a faster startup speed. And... Figure 4 The startup strategy relative to Figure 5 This method is more suitable for compressors carrying liquid, and has a higher success rate in starting when the compressor is carrying liquid. Based on this characteristic, this invention provides a multi-stage starting scheme to ensure that the compressor can be started with liquid at a relatively high starting speed.

[0102] Corresponding to the compressor control method in the above embodiments, Figure 6 This is a structural block diagram of a compressor control device according to an embodiment of the present invention. For ease of explanation, only the parts relevant to the embodiment of the present invention are shown. (See references) Figure 6 The compressor control device 20 includes: a command response module 21, a strategy determination module 22, and a strategy switching module 23.

[0103] The instruction response module 21 is used to respond to the compressor start instruction, obtain the first start strategy, and determine the first start strategy as the current start strategy. The current start strategy refers to the start strategy currently being used.

[0104] The strategy determination module 22 is used to control the compressor to start using the current startup strategy. If the compressor fails to start after a first preset number of starts using the current startup strategy, a second startup strategy is determined. The compressor startup speed corresponding to the second startup strategy is lower than the compressor startup speed corresponding to the current startup strategy.

[0105] The strategy switching module 23 is used to determine the second startup strategy as the current startup strategy and return to the execution steps of controlling the compressor to start with the current startup strategy until the compressor startup meets the preset conditions.

[0106] The preset conditions are: the compressor starts successfully, or the total number of compressor starts reaches the second preset number, or the total start time of the compressor reaches the preset time.

[0107] In one possible implementation, the instruction response module 21 is further configured to:

[0108] If the compressor fails to start successfully after the preset conditions for starting are met, the compressor will be powered off.

[0109] In one possible implementation, the strategy determination module 22 is specifically used for:

[0110] The preset liquid-carrying initiation strategy is obtained based on the number of iterations, resulting in a second initiation strategy. Here, the number of iterations refers to the number of times the current initiation strategy has been updated.

[0111] In one possible implementation, the strategy determination module 22 is specifically used for:

[0112] A second startup strategy is obtained by reducing the rate of increase of compressor speed in the current startup strategy and / or increasing the runtime of the compressor at low speed in the current startup strategy.

[0113] In one possible implementation, the strategy determination module 22 is further used for:

[0114] Multiple liquid-initiated start strategies are preset, and the mapping relationship between different iteration numbers and each liquid-initiated start strategy is defined.

[0115] Based on this, a preset liquid-carrying initiation strategy is obtained according to the number of iterations, including:

[0116] The preset liquid-based initiation strategy is obtained based on the number of iterations and the mapping relationship.

[0117] In one possible implementation, the strategy determination module 22 is specifically used for:

[0118] The compressor speed increase rate in the current startup strategy is reduced by a first preset step size, and / or the compressor runtime at low speeds in the current startup strategy is increased by a second preset step size. Here, low speed refers to a speed lower than a preset speed.

[0119] In one possible implementation, the preset liquid-based start-up strategy is as follows:

[0120] The compressor is controlled to start running at a first speed. Within a first duration, the compressor speed is controlled to increase from the first speed at a first rate.

[0121] After the compressor has been running for a certain period of time, the compressor speed is controlled to increase at a second speed until the compressor speed reaches the preset speed.

[0122] Once the compressor reaches the preset speed, the compressor is controlled to respond to the target speed.

[0123] The second speed is greater than the first speed, and the target speed is the speed determined based on the compressor start command.

[0124] In another embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program, which includes program instructions. When executed by a processor, the program instructions implement all or part of the processes in the methods described above. The computer program can also instruct related hardware to complete the process. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed 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.

[0125] The computer-readable storage medium can be an internal storage unit of the terminal as described in the following embodiments, such as the terminal's hard disk or memory. The computer-readable storage medium can also be an external storage device of the terminal, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, Flash Card, etc., equipped on the terminal. Furthermore, the computer-readable storage medium may include both internal storage units and external storage devices of the terminal. The computer-readable storage medium is used to store computer programs and other programs and data required by the terminal. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0126] This invention also provides a vehicle, which includes a control terminal, see below. Figure 7 , Figure 7 This is a schematic block diagram of a control terminal provided in an embodiment of the present invention. Figure 7 The terminal 300 in this embodiment may include one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memories 304 store computer programs, including program instructions. The processors 301 execute the program instructions stored in the memories 304. Specifically, the processors 301 are configured to invoke the program instructions to perform the functions of the modules / units in the above-described device embodiments, such as... Figure 6 The functions of modules 21 to 23 are shown.

[0127] It should be understood that, in this embodiment of the invention, the processor 301 may be a Central Processing Unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0128] Input device 302 may include a touchpad, a fingerprint sensor (for collecting the user's fingerprint information and fingerprint orientation information), a microphone, etc., and output device 303 may include a display (LCD, etc.), a speaker, etc.

[0129] The memory 304 may include read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include non-volatile random access memory. For example, the memory 304 may also store device type information.

[0130] In specific implementations, the processor 301, input device 302, and output device 303 described in the embodiments of the present invention can execute the implementation methods described in the first and second embodiments of the compressor control method provided in the embodiments of the present invention, or they can execute the implementation methods of the terminal described in the embodiments of the present invention, which will not be repeated here.

[0131] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented 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 implementations should not be considered beyond the scope of this invention.

[0132] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the terminals and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0133] In the several embodiments provided in this application, it should be understood that the disclosed terminals and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces or units, or it may be an electrical, mechanical, or other form of connection.

[0134] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0135] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0136] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A compressor control method, characterized in that, include: In response to the compressor start command, a first start strategy is obtained and the first start strategy is determined as the current start strategy; The first startup strategy is a pre-set startup strategy for compressors without liquid, and the current startup strategy refers to the startup strategy currently being used. Control the compressor to start using the current startup strategy; If the compressor fails to start after a first preset number of attempts using the current startup strategy, a second startup strategy is determined. The second startup strategy determined in each iteration is different. The second startup strategy is the liquid-carrying startup strategy corresponding to the compressor, and the compressor startup speed corresponding to the second startup strategy is lower than the compressor startup speed corresponding to the current startup strategy. The second startup strategy is determined as the current startup strategy, and the process returns to the step of controlling the compressor to start with the current startup strategy until the startup of the compressor meets the preset conditions; The preset conditions are: the compressor starts successfully, or the total number of times the compressor starts reaches a second preset number, or the total startup time of the compressor reaches a preset time. The compressor starting speed corresponding to the second starting strategy is less than the compressor starting speed corresponding to the current starting strategy, including: the compressor speed increase rate set in the second starting strategy is less than the compressor speed increase rate set in the current starting strategy, and / or, the compressor running length at low speed set in the second starting strategy is greater than the compressor running length at low speed set in the current starting strategy. Specifically, the growth rate of the compressor speed in the current startup strategy is reduced according to a first preset step size; the first preset step size is positively correlated with the liquid carrying probability of the compressor, or negatively correlated with the temperature of the outer surface of the compressor. The liquid-based start-up strategy is as follows: The compressor is controlled to start running at a first speed; the compressor speed is controlled to increase at a first rate starting from the first speed within a first duration; After the compressor starts for the first duration, the compressor speed is controlled to increase at a second speed until the compressor speed reaches a preset speed. Once the compressor reaches the preset speed, the compressor is controlled to respond to the target speed. Wherein, the second speed is greater than the first speed, and the target rotational speed is the rotational speed determined based on the compressor start command.

2. The compressor control method as described in claim 1, characterized in that, The compressor control method further includes: If the compressor fails to start successfully after the preset conditions for starting are met, the compressor will be powered off.

3. The compressor control method as described in claim 1, characterized in that, The determination of the second startup strategy includes: A preset liquid-carrying start strategy is obtained based on the number of iterations, resulting in a second start strategy; wherein, the number of iterations refers to the number of times the current start strategy has been updated.

4. The compressor control method as described in claim 1, characterized in that, The determination of the second startup strategy includes: A second startup strategy is obtained by lowering the rate of increase of compressor speed in the current startup strategy and / or increasing the runtime of the compressor at low speed in the current startup strategy. Low speed refers to a speed lower than the preset speed.

5. The compressor control method as described in claim 3, characterized in that, The compressor control method further includes: Multiple liquid-initiated start strategies are preset, and the mapping relationship between different iteration numbers and each liquid-initiated start strategy is defined; The step of obtaining the preset liquid-based initiation strategy based on the number of iterations includes: A preset liquid-based start-up strategy is obtained based on the number of iterations and the mapping relationship.

6. The compressor control method as described in claim 4, characterized in that, The adjustment of the compressor's operating time at low speed in the current startup strategy includes: Increase the compressor's operating time at low speed in the current startup strategy according to the second preset step size.

7. A compressor control device, characterized in that, include: The instruction response module is used to respond to the compressor start instruction, obtain the first start strategy, and determine the first start strategy as the current start strategy; The first startup strategy is a pre-set startup strategy for compressors without liquid, and the current startup strategy refers to the startup strategy currently being used. The strategy determination module is used to control the compressor to start according to the current startup strategy; If the compressor fails to start after a first preset number of attempts using the current startup strategy, a second startup strategy is determined. The second startup strategy determined in each iteration is different. The second startup strategy is the liquid-carrying startup strategy corresponding to the compressor, and the compressor startup speed corresponding to the second startup strategy is lower than the compressor startup speed corresponding to the current startup strategy. The strategy switching module is used to determine the second startup strategy as the current startup strategy and return to the step of controlling the compressor to start with the current startup strategy until the startup of the compressor meets the preset conditions; The preset conditions are: the compressor starts successfully, or the total number of times the compressor starts reaches a second preset number, or the total startup time of the compressor reaches a preset time. The compressor starting speed corresponding to the second starting strategy is less than the compressor starting speed corresponding to the current starting strategy, including: the compressor speed increase rate set in the second starting strategy is less than the compressor speed increase rate set in the current starting strategy, and / or, the compressor running length at low speed set in the second starting strategy is greater than the compressor running length at low speed set in the current starting strategy. Specifically, the growth rate of the compressor speed in the current startup strategy is reduced according to a first preset step size; the first preset step size is positively correlated with the liquid carrying probability of the compressor, or negatively correlated with the temperature of the outer surface of the compressor. The liquid-based start-up strategy is as follows: The compressor is controlled to start running at a first speed; the compressor speed is controlled to increase at a first rate starting from the first speed within a first duration; After the compressor starts for the first duration, the compressor speed is controlled to increase at a second speed until the compressor speed reaches a preset speed. Once the compressor reaches the preset speed, the compressor is controlled to respond to the target speed. Wherein, the second speed is greater than the first speed, and the target rotational speed is the rotational speed determined based on the compressor start command.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 6.

9. A vehicle, characterized in that, include: Control terminal; The control terminal includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 6.

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