Control method of vehicle electronic expansion valve, storage medium and electronic equipment

Abstract

According to the control method of the vehicle electronic expansion valve, the expansion valve working information of each startup sound effect mode is determined according to the sound effect sound information of each startup sound effect mode, and then the startup sound effect duration information is determined according to the expansion valve working information of each startup sound effect mode; the method comprises the following steps: responding to a vehicle power-on signal and acquiring a current startup sound effect mode, then controlling an in-vehicle loudspeaker according to startup sound effect duration information and sound effect sound information of the current startup sound effect mode, finally controlling an electronic expansion valve according to expansion valve working information of the current startup sound effect mode, and controlling the electronic expansion valve based on a noise masking effect. And noise caused by power-on reset of the electronic expansion valve is covered by using a power-on sound effect generated by power-on of the vehicle.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and particularly relates to a control method, a storage medium, and an electronic device for a vehicle electronic expansion valve. Background Art

[0002] In new energy vehicles, a heat pump air conditioning system is usually installed, and the heat pump air conditioning system mainly uses an electronic expansion valve. Compared with the traditional thermal expansion valve, the electronic expansion valve can more stably adjust the refrigerant flow rate, and is a key component to ensure the working efficiency of the heat pump system. The electronic expansion valve drives the valve core to move axially by the rotation of the internal stepper motor to adjust the flow rate of the electronic expansion valve. To ensure its precise adjustment, when the vehicle is powered on for the first time, the electronic expansion valve needs to be reset. During the reset process, the stepper motor will perform over-adjustment, also known as "stalling", to ensure that the valve core runs to the zero position one hundred percent. During the stalling process, the valve core will collide with the valve body, causing the valve body to vibrate violently. The vibration will be transmitted along the vehicle body to the passenger compartment and emit obvious noise. The duration and sound pressure level of the noise are related to the number of stalling operation ranges and the rotation speed of the motor. The longer the stalling operation range, the longer the noise duration, and the faster the rotation speed of the stepper motor, the higher the noise sound pressure level.

[0003] In the prior art, a high-performance vibration absorption spring is usually added inside the valve body of the electronic expansion valve to absorb the vibration caused by stalling, thereby reducing the noise level, but this greatly increases the use cost of the components; or the rotation speed of the motor during stalling is reduced to reduce the vibration force caused by stalling. Although the noise level decreases, the stalling duration increases, and the risk of customer complaints is still high. Summary of the Invention

[0004] The purpose of the present application is to overcome the above problems and provide a control method, a storage medium, and an electronic device for a vehicle electronic expansion valve.

[0005] The technical solution of the present application provides a control method for a vehicle electronic expansion valve, including:

[0006] Determine the expansion valve working information of each startup sound effect mode according to the sound information of the startup sound effect;

[0007] Determine the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode;

[0008] In response to the vehicle power-on signal, obtain the current startup sound effect mode;

[0009] Control the in-vehicle speaker according to the startup sound effect duration information and the sound information of the current startup sound effect mode;

[0010] Control the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode.

[0011] Further, the sound effect sound information includes the size of the sound effect sound;

[0012] Determining the expansion valve working information of each startup sound effect mode according to the sound effect sound information of each startup sound effect mode specifically includes:

[0013] Determine the maximum noise threshold of the expansion valve for each startup sound effect mode according to the size of the sound effect sound of each startup sound effect mode;

[0014] Determine the expansion valve working information of each startup sound effect mode according to the maximum noise threshold of the expansion valve for each startup sound effect mode.

[0015] Further, determining the maximum noise threshold of the expansion valve for each startup sound effect mode according to the size of the sound effect sound of each startup sound effect mode specifically includes:

[0016] Obtain the difference between the maximum allowable noise value in the passenger compartment when the expansion valve is working and the background noise value in the passenger compartment before the expansion valve works as the noise control target value;

[0017] Add the size of the sound effect sound of each startup sound effect mode to the noise control target value to obtain the maximum noise threshold of the expansion valve for each startup sound effect mode.

[0018] Further, the expansion valve working information includes the maximum locked-rotor speed of the expansion valve motor and the longest duration of the locked-rotor noise of the expansion valve;

[0019] Determining the expansion valve working information of each startup sound effect mode according to the maximum noise threshold of the expansion valve for each startup sound effect mode specifically includes:

[0020] Obtain the motor locked-rotor speed-noise characteristic curve, and the motor locked-rotor speed-noise characteristic curve includes the corresponding relationship between the motor speed and the noise;

[0021] Determine the motor speed corresponding to the maximum noise threshold of the expansion valve in the motor locked-rotor speed-noise characteristic curve according to the maximum noise threshold of the expansion valve for each startup sound effect mode, and use it as the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode;

[0022] Determine the longest duration of the locked-rotor noise of the expansion valve for each startup sound effect mode according to the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode.

[0023] Further, determining the longest duration of the locked-rotor noise of the expansion valve for each startup sound effect mode according to the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode specifically includes:

[0024] Obtain the total number of steps of the expansion valve power-on reset motor operation;

[0025] Calculate the longest duration of the expansion valve stall noise for each startup sound effect mode as the total number of steps of the current expansion valve power-on reset motor operation divided by the maximum stall speed of the expansion valve motor for each startup sound effect mode.

[0026] Further, the expansion valve working information includes the longest duration of the expansion valve stall noise, and the startup sound effect duration information includes the shortest duration of the sound effect;

[0027] Determining the startup sound effect duration information according to the expansion valve working information for each startup sound effect mode specifically includes:

[0028] Taking the maximum value among the longest durations of the expansion valve stall noise for each startup sound effect mode as the shortest duration of the sound effect.

[0029] Further, the expansion valve working information includes the longest duration of the expansion valve stall noise, and the startup sound effect duration information includes the shortest duration of the sound effect;

[0030] Determining the startup sound effect duration information according to the expansion valve working information for each startup sound effect mode specifically includes:

[0031] Determine the shortest duration of the sound effect for each startup sound effect mode according to the longest duration of the expansion valve stall noise for each startup sound effect mode.

[0032] Further, the sound effect sound information includes the size of the sound effect sound, and the startup sound effect duration information includes the shortest duration of the sound effect;

[0033] Controlling the in-vehicle speaker according to the startup sound effect duration information and the sound effect sound information of the current startup sound effect mode specifically includes:

[0034] Control the speaker output voltage value of the in-vehicle speaker according to the size of the sound effect sound of the current startup sound effect mode;

[0035] Control the operation duration of the in-vehicle speaker according to the shortest duration of the sound effect.

[0036] Further, the expansion valve working information includes the maximum stall speed of the expansion valve motor and the longest duration of the expansion valve stall noise;

[0037] Controlling the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode specifically includes:

[0038] Control the motor output voltage value of the electronic expansion valve according to the maximum blocked rotation speed of the expansion valve motor in the current startup sound effect mode;

[0039] Control the operation duration of the electronic expansion valve according to the longest continuous duration of the blocked rotation noise of the expansion valve in the current startup sound effect mode.

[0040] The technical solution of this application also provides a storage medium, which stores computer instructions. When a computer executes the computer instructions, it is used to execute a control method of a vehicle electronic expansion valve as described above.

[0041] The technical solution of this application also provides an electronic device, including at least one processor; and,

[0042] A memory communicatively connected to the at least one processor; wherein,

[0043] The memory stores instructions executable by the at least one processor. The instructions are executed by the at least one processor so that the at least one processor can execute a control method of a vehicle electronic expansion valve as described above.

[0044] The technical solution of this application also provides a computer program product, including a computer program / instructions. When the computer program / instructions are executed by a processor, they implement a control method of a vehicle electronic expansion valve as described above.

[0045] After adopting the above technical solution, the following beneficial effects are obtained:

[0046] A control method of a vehicle electronic expansion valve in this application determines the expansion valve working information of each startup sound effect mode according to the sound information of each startup sound effect mode, then determines the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode, responds to the vehicle power-on signal and obtains the current startup sound effect mode, then controls the in-vehicle speaker according to the startup sound effect duration information and the sound information of the current startup sound effect mode, and finally controls the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode. Based on the noise masking effect, the startup sound effect generated when the vehicle is powered on is used to mask the noise brought by the power-on reset of the electronic expansion valve. Description of the Drawings

[0047] Referring to the drawings, the disclosure of this application will become easier to understand. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the protection scope of this application. In the figures:

[0048] Figure 1 is the flowchart of the working process of the control method of the vehicle electronic expansion valve in an embodiment of this application;

[0049] Figure 2It is the flowchart of the control method of the vehicle electronic expansion valve in one embodiment of the present application;

[0050] Figure 3 It is the flowchart of the control method of the vehicle electronic expansion valve in another embodiment of the present application;

[0051] Figure 4 It is the schematic diagram of the motor stall speed-noise characteristic curve in one embodiment of the present application;

[0052] Figure 5 It is the schematic diagram of the output voltage and sound characteristic curve of the in-vehicle speaker in one embodiment of the present application;

[0053] Figure 6 It is the schematic diagram of the motor operating voltage and speed characteristic curve in one embodiment of the present application;

[0054] Figure 7 It is the schematic diagram of the hardware structure of the electronic device in one embodiment of the present application. Detailed implementation manners

[0055] The following further illustrates the detailed implementation manners of the present application with reference to the accompanying drawings.

[0056] It is easy to understand that according to the technical solution of the present application, under the condition of not changing the essence of the present application, there are various structural ways and implementation ways that can be mutually replaced by those of ordinary skill in the art. Therefore, the following detailed implementation manners and the accompanying drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the whole of the present application or regarded as a limitation or restriction on the technical solution of the application.

[0057] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings, and they are relative concepts. Therefore, they may change accordingly according to their different positions and different usage states. So, these or other orientation terms should not be construed as restrictive terms. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0059] As shown Figure 1 in the figure, the working flowchart of a control method for a vehicle electronic expansion valve in an embodiment of the present application includes:

[0060] Step S101: Determine the expansion valve working information of each startup sound effect mode according to the sound information of each startup sound effect mode;

[0061] Step S102: Determine the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode;

[0062] Step S103: In response to the vehicle power-on signal, obtain the current startup sound effect mode;

[0063] Step S104: Control the in-vehicle speaker according to the startup sound effect duration information and the sound information of the current startup sound effect mode;

[0064] Step S105: Control the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode.

[0065] Specifically, in step S101, first determine the expansion valve working information of each startup sound effect mode according to the sound information of each startup sound effect mode. Each startup sound effect mode refers to the mode in which the startup sound effect emitted when the screen wakes up during vehicle power-on is different. The user can select different styles of vehicle power-on screen startup sound effects and determine the corresponding expansion valve working information according to the sound information of different startup sound effect modes.

[0066] In step S102, determine the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode. That is, calculate the actual time required for the valve to move from the initial state to the target state according to the expansion valve working information corresponding to each startup sound effect mode, and determine the startup sound effect duration information based on this time, ensuring that the sound effect duration is longer than the operation time of the expansion valve.

[0067] In step S103, in response to the vehicle power-on signal, obtain the current startup sound effect mode. When it is detected that the vehicle is powered on, the system will read the selected startup sound effect mode set by the user. If the user does not actively select, the system default startup sound effect mode will be called and used as the current startup sound effect mode.

[0068] In step S104, control the in-vehicle speaker according to the startup sound effect duration information and the sound information of the current startup sound effect mode, and control the in-vehicle speaker with the startup sound effect duration information obtained in step S102 and the sound information corresponding to the current startup sound effect mode.

[0069] In step S105, an electronic expansion valve is controlled according to the expansion valve working information of the current startup sound effect mode. Among them, the electronic expansion valve is preferably the electronic expansion valve in the heat pump air conditioning system of the vehicle. When the in-vehicle speaker starts playing the startup music in step S104, the electronic expansion valve can be controlled according to the expansion valve working information of the current startup sound effect mode. By using the noise masking effect, the startup sound effect emitted by the vehicle power-on screen is used to cover up the noise generated during the power-on and stall operation of the electronic expansion valve, eliminating the need to install a high-performance vibration absorption spring inside the electronic expansion valve, and solving the noise problem caused by the stall during the power-on of the electronic expansion valve at low cost.

[0070] A control method for an electronic expansion valve of a vehicle according to the present application determines the expansion valve working information of each startup sound effect mode according to the sound information of each startup sound effect mode, then determines the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode, responds to the vehicle power-on signal and obtains the current startup sound effect mode, then controls the in-vehicle speaker according to the startup sound effect duration information and the sound information of the current startup sound effect mode, and finally controls the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode. Based on the noise masking effect, the startup sound effect emitted by the vehicle power-on is used to cover up the noise generated by the power-on and reset of the electronic expansion valve.

[0071] In one embodiment, the sound information includes the sound volume of the sound effect;

[0072] The determination of the expansion valve working information of each startup sound effect mode according to the sound information of each startup sound effect mode specifically includes:

[0073] Determining the maximum noise threshold of the expansion valve of each startup sound effect mode according to the sound volume of the sound effect of each startup sound effect mode;

[0074] Determining the expansion valve working information of each startup sound effect mode according to the maximum noise threshold of the expansion valve of each startup sound effect mode.

[0075] In this embodiment, the sound information includes the sound volume of the sound effect. The determination of the expansion valve working information of each startup sound effect mode according to the sound of each startup sound effect mode specifically includes determining the maximum noise threshold of the expansion valve of each startup sound effect mode according to the sound volume of the sound effect of each startup sound effect mode, and then determining the expansion valve working information of each startup sound effect mode according to the maximum noise threshold of the expansion valve of each startup sound effect mode.

[0076] Specifically, first calculate the maximum noise that the expansion valve can allow to emit as the expansion valve maximum noise threshold according to the sound volume of the sound effects in different startup sound effect modes. This means that when the vehicle is playing the sound effects in different startup sound effect modes, the maximum sound that the expansion valve can allow to emit on the premise that the passengers in the passenger compartment cannot hear the noise of the expansion valve. There is a corresponding expansion valve maximum noise threshold for different startup sound effect modes.

[0077] Subsequently, determine the expansion valve working information for each startup sound effect mode according to the expansion valve maximum noise threshold of each startup sound effect mode. The expansion valve working information can be the motor speed of the expansion valve, the motor working duration, etc.

[0078] In one embodiment, the determining the expansion valve maximum noise threshold for each startup sound effect mode according to the sound volume of the sound effects in each startup sound effect mode specifically includes:

[0079] Obtain the difference between the maximum allowable noise value in the passenger compartment when the expansion valve is working and the background noise value in the passenger compartment before the expansion valve works as the noise control target value;

[0080] Add the sound volume of the sound effects in each startup sound effect mode to the noise control target value to obtain the expansion valve maximum noise threshold for each startup sound effect mode.

[0081] In this embodiment, determining the expansion valve maximum noise threshold for each startup sound effect mode according to the sound volume of the sound effects in each startup sound effect mode includes obtaining the difference between the maximum allowable noise value in the passenger compartment when the expansion valve is working and the background noise value in the passenger compartment before the expansion valve works as the noise control target value.

[0082] The background noise value in the passenger compartment refers to the background noise received by the passenger compartment before the expansion valve works, and the maximum allowable noise value in the passenger compartment refers to the maximum noise value on the basis of this background noise that the noise generated when the expansion valve is working cannot be perceived by the human ear. Subtract the background noise value in the passenger compartment before the expansion valve works from the maximum allowable noise value in the passenger compartment when the expansion valve is working to obtain the noise control target value.

[0083] Add the sound volume of the sound effects in each startup sound effect mode to the noise control target value to obtain the maximum noise output value that the expansion valve can allow in each startup sound effect mode, that is, the expansion valve maximum noise threshold.

[0084] In another embodiment, the expansion valve working information includes the maximum blocked-rotor speed of the expansion valve motor and the longest duration of the blocked-rotor noise of the expansion valve;

[0085] The determining the expansion valve working information for each startup sound effect mode according to the expansion valve maximum noise threshold of each startup sound effect mode specifically includes:

[0086] Obtain the motor locked-rotor speed-noise characteristic curve, where the motor locked-rotor speed-noise characteristic curve includes the corresponding relationship between the motor speed and the noise;

[0087] Determine the speed corresponding to the maximum noise threshold of the expansion valve in the motor locked-rotor speed-noise characteristic curve according to the maximum noise threshold of the expansion valve for each startup sound effect mode, and use it as the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode;

[0088] Determine the longest duration of the expansion valve locked-rotor noise for each startup sound effect mode according to the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode.

[0089] In this embodiment, the expansion valve working information includes the maximum locked-rotor speed of the expansion valve motor and the longest duration of the expansion valve locked-rotor noise. Determine the expansion valve working information for each startup sound effect mode according to the maximum noise threshold of the expansion valve for each startup sound effect mode, including obtaining the motor locked-rotor speed-noise characteristic curve. The motor locked-rotor speed-noise characteristic curve is as Figure 4 shown. The EXV valve is the abbreviation of the electronic expansion valve. Figure 4 It includes the relationship curve 41 between the motor locked-rotor speed and the noise. Map the maximum noise threshold of the expansion valve for each startup sound effect mode to the corresponding speed, and use it as the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode.

[0090] According to the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode, the longest duration of the expansion valve locked-rotor noise for each startup sound effect mode can be determined, that is, during the power-on reset process of the expansion valve, running at the maximum locked-rotor speed of the expansion valve motor, the longest possible duration of the locked-rotor operation.

[0091] In one of the embodiments, the step of determining the longest duration of the expansion valve locked-rotor noise for each startup sound effect mode according to the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode specifically includes:

[0092] Obtain the total number of steps for the power-on reset of the expansion valve;

[0093] Calculate the longest duration of the expansion valve locked-rotor noise for each startup sound effect mode as the current total number of steps for the power-on reset of the expansion valve divided by the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode.

[0094] In this embodiment, determining the longest duration of the expansion valve stall noise for each startup sound effect mode based on the maximum stall speed of the expansion valve motor includes obtaining the total step length of the expansion valve power-on reset. This total step length of the expansion valve power-on reset is set by the system by default. Assuming the total stroke of the electronic expansion valve is 500 step lengths, in order to ensure that the valve core is reset to the zero position, the total stroke step length of the expansion valve power-on reset can be set to 600 step lengths. If the valve core stopped at a position 100 step lengths away from the zero position after the previous shutdown, in order to ensure that the valve core is reset to the zero position, after the electronic expansion valve is actually reset to the zero position, it will continue to perform rotational reset. The motor will continue to run for a working time equivalent to the remaining 500 step length range at the initially set speed. This process is the stall, which is also the main source of noise generation.

[0095] Considering that the valve core may stop at the most extreme position after the previous shutdown, that is, it stops directly at the zero position. When powering on and resetting, the expansion valve will immediately stall. The motor will still run at the set speed and continue to run the entire total stroke step length of the expansion valve power-on reset. At this time, the longest duration of the stall phenomenon will occur, that is, the longest duration of the expansion valve stall noise. This time reflects the maximum duration of the expansion valve stall noise under the most adverse working conditions.

[0096] Dividing the current total step length of the expansion valve power-on reset by the maximum stall speed of the expansion valve motor for each startup sound effect mode can obtain the longest duration of the expansion valve stall noise for each startup sound effect mode.

[0097] In one of the embodiments, the expansion valve working information includes the longest duration of the expansion valve stall noise, and the startup sound effect duration information includes the shortest sound effect duration;

[0098] Determining the startup sound effect duration information according to the expansion valve working information for each startup sound effect mode specifically includes:

[0099] Taking the maximum value among the longest durations of the expansion valve stall noise for each startup sound effect mode as the shortest sound effect duration.

[0100] In this embodiment, the expansion valve working information includes the longest duration of the expansion valve stall noise, and the startup sound effect duration information includes the shortest sound effect duration. Determining the startup sound effect duration information according to the expansion valve working information for each startup sound effect mode includes taking the maximum value among the longest durations of the expansion valve stall noise for each startup sound effect mode as the shortest sound effect duration.

[0101] Specifically, in each startup sound effect mode, because the respective sound effect sound information is different and the expansion valve working information is also different, the longest duration of the expansion valve stalling noise in each startup sound effect mode will be different. To achieve the most robust guarantee for the sound effect to cover the stalling noise, the maximum value of the longest duration of the expansion valve stalling noise in all startup sound effect modes is taken as the unified shortest duration of the sound effect, which can ensure that in any mode, the sound effect will not be played earlier than the end of the expansion valve stalling noise, avoid system errors caused by noise differences in different modes, improve the coherence and comfort of the user's auditory experience, provide a more sufficient masking buffer time, and reduce the failure risk caused by factors such as actuator response delay.

[0102] Taking the maximum value of the longest duration of the expansion valve stalling noise in all startup sound effect modes as the unified shortest duration of the sound effect can also avoid setting the shortest duration of the sound effect for each mode one by one, reduce system calculations, and save system resources.

[0103] In another embodiment, the expansion valve working information includes the longest duration of the expansion valve stalling noise, and the startup sound effect duration information includes the shortest duration of the sound effect;

[0104] The determining of the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode specifically includes:

[0105] Determining the shortest duration of the sound effect in each startup sound effect mode according to the longest duration of the expansion valve stalling noise in each startup sound effect mode.

[0106] In this embodiment, the expansion valve information includes the longest duration of the expansion valve stalling noise, and the startup sound effect duration information includes the shortest duration of the sound effect. Determining the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode can determine the shortest duration of the sound effect in each startup sound effect mode according to the longest duration of the expansion valve stalling noise in each startup sound effect mode. That is to say, the shortest duration of the sound effect in each startup sound effect mode can be determined according to the longest duration of the expansion valve stalling noise corresponding to different startup sound effect modes, so that the startup sound effect just covers the expansion valve noise in the corresponding mode, achieving both effective masking and avoiding the situation where the sound effect is played too long and causes trouble to the user.

[0107] In one of the embodiments, the sound effect sound information includes the sound volume of the sound effect, and the startup sound effect duration information includes the shortest duration of the sound effect;

[0108] The controlling of the in-vehicle speaker according to the startup sound effect duration information and the sound effect sound information of the current startup sound effect mode specifically includes:

[0109] Control the speaker output voltage value of the in-vehicle speaker according to the sound volume of the sound effect in the current startup sound effect mode;

[0110] Control the running duration of the in-vehicle speaker according to the shortest duration of the sound effect.

[0111] In this embodiment, the sound effect sound information includes the sound volume of the sound effect, and the startup sound effect duration information includes the shortest duration of the sound effect. Controlling the in-vehicle speaker according to the startup sound effect duration information and the sound effect sound information of the current startup sound effect mode includes controlling the speaker output voltage value of the in-vehicle speaker according to the sound volume of the sound effect in the current startup sound effect mode, and controlling the running duration of the in-vehicle speaker according to the shortest duration of the sound effect.

[0112] Specifically, after the vehicle is powered on and the current startup sound effect mode is obtained, control the speaker output voltage value of the in-vehicle speaker according to the sound volume of the sound effect in the current startup sound effect mode, and then control the running duration of the in-vehicle speaker according to the shortest duration of the sound effect, which can ensure that the sound effect is not interrupted before the expansion valve completes resetting, completely cover the startup noise of the electronic expansion valve, and improve the user experience.

[0113] Such as Figure 5 As shown in the schematic diagram of the in-vehicle speaker output voltage and the sound characteristic curve 51, there is a corresponding relationship between the in-vehicle speaker output voltage and the working noise value of the in-vehicle speaker, that is, the output sound value. Map the sound volume of the sound effect in the current startup sound effect mode, that is, the working noise value of the in-vehicle speaker in the current startup sound effect mode, to the in-vehicle speaker output voltage as the speaker output voltage value of the in-vehicle speaker, which can improve the control accuracy of the in-vehicle speaker, strengthen noise management, and ensure that the sound emitted by the in-vehicle speaker can mask the noise of the electronic expansion valve.

[0114] In one embodiment, the expansion valve working information includes the maximum blocked rotation speed of the expansion valve motor and the longest duration of the blocked rotation noise of the expansion valve;

[0115] Controlling the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode specifically includes:

[0116] Control the motor output voltage value of the electronic expansion valve according to the maximum blocked rotation speed of the expansion valve motor in the current startup sound effect mode;

[0117] Control the running duration of the electronic expansion valve according to the longest duration of the blocked rotation noise of the expansion valve in the current startup sound effect mode.

[0118] In this embodiment, the expansion valve working information includes the maximum locked-rotor speed of the expansion valve motor and the longest duration of the expansion valve locked-rotor noise. Controlling the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode includes controlling the motor output voltage value of the electronic expansion valve according to the maximum locked-rotor speed of the expansion valve motor of the current startup sound effect mode, and controlling the operation duration of the electronic expansion valve according to the longest duration of the expansion valve locked-rotor noise of the current startup sound effect mode.

[0119] Specifically, by strictly limiting the operation duration of the electronic expansion valve within the longest duration of the expansion valve locked-rotor noise and controlling the motor speed of the electronic expansion valve within the maximum locked-rotor speed of the expansion valve motor, and cooperating with the startup sound effect of the in-vehicle speaker, the working noise is effectively masked and the user is prevented from noticing. Based on the maximum locked-rotor speed of the expansion valve motor and the longest duration of the expansion valve locked-rotor noise, dual-parameter control of the electronic expansion valve is achieved, and the voltage output and operation duration are adjusted, effectively controlling the noise exposure of the electronic expansion valve and optimizing the energy consumption and user experience.

[0120] As Figure 6 shown, there is a corresponding relationship between the working voltage and speed of the electronic expansion valve motor. It can be seen from the voltage-speed relationship curve 61 shown in Figure 6 that mapping the maximum locked-rotor speed of the expansion valve motor to the motor working voltage of the electronic expansion valve as the motor output voltage value of the electronic expansion valve effectively controls the speed of the electronic expansion valve, improves the precision control of the electronic expansion valve, and strengthens the noise management.

[0121] As Figure 2 shown, a flowchart of a control method for a vehicle electronic expansion valve in one embodiment of the present application includes:

[0122] S201: Obtain the difference between the maximum allowable noise value in the passenger compartment when the expansion valve is working and the background noise value in the passenger compartment before the expansion valve works as the noise control target value;

[0123] S202: Add the sound volume of each startup sound effect mode to the noise control target value to obtain the maximum noise threshold of the expansion valve for each startup sound effect mode;

[0124] S203: Obtain the motor locked-rotor speed-noise characteristic curve, and the motor locked-rotor speed-noise characteristic curve includes the corresponding relationship between the motor speed and the noise;

[0125] S204: Determine the motor speed corresponding to the maximum noise threshold of the expansion valve in the motor locked-rotor speed-noise characteristic curve as the maximum locked-rotor speed of the expansion valve motor for each startup sound effect mode;

[0126] S205: Obtain the total step length of the expansion valve power-on reset;

[0127] S206: Calculate the longest duration of the expansion valve stalling noise for each startup sound effect mode as the total number of steps for the current expansion valve power-on reset divided by the maximum stalling speed of the expansion valve motor for each startup sound effect mode;

[0128] S207: Take the maximum value among the longest durations of the expansion valve stalling noise for each startup sound effect mode as the shortest duration of the sound effect;

[0129] S208: In response to the vehicle power-on signal, obtain the current startup sound effect mode;

[0130] S209: Control the speaker output voltage value of the in-vehicle speaker according to the sound volume of the sound effect for the current startup sound effect mode;

[0131] S210: Control the operation duration of the in-vehicle speaker according to the shortest duration of the sound effect;

[0132] S211: Control the motor output voltage value of the electronic expansion valve according to the maximum stalling speed of the expansion valve motor for the current startup sound effect mode;

[0133] S212: Control the operation duration of the electronic expansion valve according to the longest duration of the expansion valve stalling noise for the current startup sound effect mode.

[0134] As Figure 3 shown, a flowchart of a control method for a vehicle electronic expansion valve in another embodiment of the present application includes:

[0135] S301: Obtain the difference between the maximum allowable noise value in the passenger compartment when the expansion valve is working and the background noise value in the passenger compartment before the expansion valve works as the noise control target value;

[0136] S302: Add the sound volume of the sound effect for each startup sound effect mode to the noise control target value to obtain the maximum noise threshold of the expansion valve for each startup sound effect mode;

[0137] S303: Obtain the motor stalling speed-noise characteristic curve, where the motor stalling speed-noise characteristic curve includes the corresponding relationship between the motor speed and the noise;

[0138] S304: Determine the motor speed corresponding to the maximum noise threshold of the expansion valve in the motor stalling speed-noise characteristic curve as the maximum stalling speed of the expansion valve motor for each startup sound effect mode;

[0139] S305: Obtain the total number of steps for the expansion valve power-on reset;

[0140] S306: Calculate the longest duration of the expansion valve blockage noise for each startup sound effect mode as the total number of steps for the current expansion valve power-on reset divided by the maximum blockage rotation speed of the expansion valve motor for each startup sound effect mode;

[0141] S307: Determine the shortest sound effect duration for each startup sound effect mode based on the longest duration of the expansion valve blockage noise for each startup sound effect mode;

[0142] S308: In response to the vehicle power-on signal, obtain the current startup sound effect mode;

[0143] S309: Control the speaker output voltage value of the in-vehicle speaker according to the sound volume of the sound effect for the current startup sound effect mode;

[0144] S310: Control the operation duration of the in-vehicle speaker according to the shortest sound effect duration;

[0145] S311: Control the motor output voltage value of the electronic expansion valve according to the maximum blockage rotation speed of the expansion valve motor for the current startup sound effect mode;

[0146] S312: Control the operation duration of the electronic expansion valve according to the longest duration of the expansion valve blockage noise for the current startup sound effect mode.

[0147] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0148] The technical solution of the present application also provides a storage medium that stores computer instructions. When a computer executes the computer instructions, it is used to execute the control method of a vehicle electronic expansion valve in any one of the foregoing embodiments.

[0149] Figure 7 An electronic device of the present application is shown, including:

[0150] At least one processor 701; and,

[0151] A memory 702 communicatively connected to the at least one processor 701; wherein,

[0152] The memory 702 stores instructions executable by the at least one processor 701. The instructions are executed by the at least one processor 701 so that the at least one processor 701 can execute all steps of the control method of a vehicle electronic expansion valve in any one of the foregoing method embodiments.

[0153] Figure 7 Taking one processor 701 as an example:

[0154] The electronic device may further include: an input device 703 and an output device 704.

[0155] The processor 701, the memory 702, the input device 703, and the output device 704 may be connected through a bus or other means. In the figure, the connection through the bus is taken as an example.

[0156] As a non-volatile computer-readable storage medium, the memory 702 can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules corresponding to a control method of a vehicle electronic expansion valve in an embodiment of the present application. For example, Figures 1-4 the method flow shown. By running the non-volatile software programs, instructions, and modules stored in the memory 702, the processor 701 can execute various functional applications and data processing, that is, implement a control method of a vehicle electronic expansion valve in the above embodiment.

[0157] The memory 702 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of a control method of a vehicle electronic expansion valve, etc. In addition, the memory 702 may include a high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 702 may optionally include a memory remotely set relative to the processor 701, and these remote memories can be connected to the device executing a control method of a vehicle electronic expansion valve through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0158] The input device 703 can receive input user clicks, and generate signal inputs related to user settings and function controls of a method for estimating vehicle energy-saving benefits. The output device 704 may include a display device such as a display screen.

[0159] When the one or more modules are stored in the memory 702 and run by the one or more processors 701, a control method of a vehicle electronic expansion valve in any of the above method embodiments is executed.

[0160] The technical solution of the present application also provides a vehicle, which includes a vehicle body and the electronic device as described above mounted on the vehicle body.

[0161] The above are only the principles and preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, the embodiments obtained by appropriately combining the technical solutions disclosed in different embodiments are also included within the technical scope of the present invention. Based on the principles of the present application, several other variations can also be made, which should also be regarded as the protection scope of the present application.

Claims

1. A control method for an electronic expansion valve of a vehicle, characterized in that, Including: Determining the expansion valve working information for each startup sound effect mode according to the sound effect sound information of each startup sound effect mode; Determining the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode; In response to the vehicle power-on signal, obtaining the current startup sound effect mode; Controlling the in-vehicle speaker according to the startup sound effect duration information and the sound effect sound information of the current startup sound effect mode; Controlling the electronic expansion valve according to the expansion valve working information of the current startup sound effect mode.

2. The control method of an electronic expansion valve for a vehicle according to claim 1, characterized in that, The sound effect sound information includes the sound effect sound volume; The determining the expansion valve working information for each startup sound effect mode according to the sound effect sound information of each startup sound effect mode specifically includes: Determining the maximum noise threshold of the expansion valve for each startup sound effect mode according to the sound effect sound volume of each startup sound effect mode; Determining the expansion valve working information for each startup sound effect mode according to the maximum noise threshold of the expansion valve for each startup sound effect mode.

3. A control method for an electronic expansion valve of a vehicle according to claim 2, characterized in that, The determining the maximum noise threshold of the expansion valve for each startup sound effect mode according to the sound effect sound volume of each startup sound effect mode specifically includes: Obtaining the difference between the maximum allowable noise value in the passenger compartment when the expansion valve is working and the background noise value in the passenger compartment before the expansion valve is working as the noise control target value; Adding the sound effect sound volume of each startup sound effect mode to the noise control target value to obtain the maximum noise threshold of the expansion valve for each startup sound effect mode.

4. A control method for a vehicle electronic expansion valve according to claim 2, wherein, The expansion valve working information includes the maximum blocked-rotor speed of the expansion valve motor and the longest duration of the blocked-rotor noise of the expansion valve; The determining the expansion valve working information for each startup sound effect mode according to the maximum noise threshold of the expansion valve for each startup sound effect mode specifically includes: Obtaining the motor blocked-rotor speed-noise characteristic curve, where the motor blocked-rotor speed-noise characteristic curve includes the corresponding relationship between the motor speed and the noise; Determining the motor speed corresponding to the maximum noise threshold of the expansion valve in the motor blocked-rotor speed-noise characteristic curve according to the maximum noise threshold of the expansion valve for each startup sound effect mode as the maximum blocked-rotor speed of the expansion valve motor for each startup sound effect mode; Determining the longest duration of the blocked-rotor noise of the expansion valve for each startup sound effect mode according to the maximum blocked-rotor speed of the expansion valve motor for each startup sound effect mode.

5. The control method of an electronic expansion valve for a vehicle according to claim 4, wherein, The determining the longest duration of the blocked-rotor noise of the expansion valve for each startup sound effect mode according to the maximum blocked-rotor speed of the expansion valve motor for each startup sound effect mode specifically includes: Obtaining the total number of steps of the expansion valve power-on reset motor operation; Calculating the longest duration of the blocked-rotor noise of the expansion valve for each startup sound effect mode as the total number of steps of the current expansion valve power-on reset motor operation divided by the maximum blocked-rotor speed of the expansion valve motor for each startup sound effect mode.

6. The control method of a vehicle electronic expansion valve according to claim 1, characterized in that The expansion valve working information includes the longest duration of the blocked-rotor noise of the expansion valve, and the startup sound effect duration information includes the shortest duration of the sound effect; The determining the startup sound effect duration information according to the expansion valve working information of each startup sound effect mode specifically includes: Taking the maximum value among the longest durations of the blocked-rotor noise of the expansion valve for each startup sound effect mode as the shortest duration of the sound effect.

7. A control method for an electronic expansion valve of a vehicle according to claim 1, characterized in that, The working information of the expansion valve includes the longest duration of the expansion valve stalling noise, and the start-up sound effect duration information includes the shortest duration of the sound effect; Determining the start-up sound effect duration information according to the working information of the expansion valve for each start-up sound effect mode specifically includes: Determining the shortest duration of the sound effect for each start-up sound effect mode according to the longest duration of the expansion valve stalling noise for each start-up sound effect mode.

8. The control method of a vehicle electronic expansion valve according to claim 1, characterized in that The sound effect sound information includes the size of the sound effect, and the start-up sound effect duration information includes the shortest duration of the sound effect; Controlling the in-vehicle speaker according to the start-up sound effect duration information and the sound effect sound information of the current start-up sound effect mode specifically includes: Controlling the speaker output voltage value of the in-vehicle speaker according to the size of the sound effect of the current start-up sound effect mode; Controlling the operation duration of the in-vehicle speaker according to the shortest duration of the sound effect.

9. The control method of a vehicle electronic expansion valve according to claim 1, characterized in that The working information of the expansion valve includes the maximum stalling speed of the expansion valve motor and the longest duration of the expansion valve stalling noise; Controlling the electronic expansion valve according to the working information of the expansion valve for the current start-up sound effect mode specifically includes: Controlling the motor output voltage value of the electronic expansion valve according to the maximum stalling speed of the expansion valve motor for the current start-up sound effect mode; Controlling the operation duration of the electronic expansion valve according to the longest duration of the expansion valve stalling noise for the current start-up sound effect mode.

10. A storage medium, characterized in that, The storage medium stores computer instructions, which are used to execute a control method for a vehicle electronic expansion valve according to any one of claims 1-9 when the computer executes the computer instructions.

11. An electronic device, characterized in that, Including at least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute a control method for a vehicle electronic expansion valve according to any one of claims 1-9.

12. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, a control method for a vehicle electronic expansion valve according to any one of claims 1-9 is implemented.

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