Automobile blower gear voltage adjustment method and automobile

Abstract

The present invention discloses a method for adjusting the gear voltage of an automotive blower and an automobile. The method includes receiving a gear voltage setting instruction for the automotive blower; the gear voltage setting instruction includes the blower gear; determining the gear voltage corresponding to the blower gear according to a preset gear voltage setting model, where the preset gear voltage setting model is determined based on the highest blower noise corresponding to the highest-end voltage and the lowest blower noise corresponding to the lowest-end voltage, the highest-end voltage refers to the terminal voltage corresponding to the automotive blower at the lowest refrigeration speed, and the lowest-end voltage of the automotive blower refers to the lowest terminal voltage corresponding to the highest idle speed; controlling the terminal voltage of the automotive blower to switch to the gear voltage. The gear voltage determined by the present invention is more suitable for each blower gear, reduces the noise mutation caused by the automotive blower, improves the NVH performance of the automobile, and enhances the user's driving experience.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive blower control, and particularly to a method for adjusting the gear voltage of an automotive blower and an automobile. Background Art

[0002] With the rapid development of the automotive industry, the overall performance of various automotive aspects has been rapidly improved, and customers' requirements for automotive performance are also getting higher and higher. Among them, the NVH (Noise, Vibration, Harshness) performance is an important indicator affecting the satisfaction of vehicle use, and the blower is an important source of automotive noise. Therefore, reducing the noise generated by the blower is very important.

[0003] In the prior art, the rotational speed corresponding to each gear of the blower can be set according to the air volume of the blower, etc. However, since the in-vehicle noise and the air volume of the blower are not linearly related, when adjusting the blower gear, the noise between adjacent gears will suddenly change irregularly, thereby reducing the NVH performance and the user's vehicle use experience. Summary of the Invention

[0004] Embodiments of the present invention provide a method for adjusting the gear voltage of an automotive blower and an automobile to solve the problems of low NVH performance and low user vehicle use experience.

[0005] A method for adjusting the gear voltage of an automotive blower includes:

[0006] Receiving a gear voltage setting instruction for the automotive blower; the gear voltage setting instruction includes the blower gear;

[0007] Determining the gear voltage corresponding to the blower gear according to a preset gear voltage setting model, the preset gear voltage setting model being determined according to the highest blower noise corresponding to the highest-end voltage and the lowest blower noise corresponding to the lowest-end voltage, the highest-end voltage being the terminal voltage corresponding to the automotive blower at the lowest refrigeration rotational speed, and the lowest-end voltage being the lowest terminal voltage corresponding to the automotive blower at the highest idle rotational speed;

[0008] Controlling the terminal voltage of the automotive blower to switch to the gear voltage.

[0009] An automobile includes a controller for executing the above method for adjusting the gear voltage of the automotive blower.

[0010] The above-mentioned method for adjusting the voltage of the blower gears of an automobile and the automobile. This method determines the gear voltage corresponding to the blower gear through a preset gear voltage setting model, and this preset gear voltage setting model comprehensively considers the maximum refrigeration demand (i.e., the lowest refrigeration speed) of the automobile blower and the idling noise demand (i.e., the highest idling speed), making the noise linearity between the blower gears of the automobile higher. Furthermore, the determined gear voltage is more suitable for each blower gear, reducing the noise mutation caused by the automobile blower, improving the NVH performance of the automobile, and enhancing the user's driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 is a flowchart of a method for adjusting the voltage of the blower gears of an automobile according to an embodiment of the present invention;

[0013] Figure 2 is another flowchart of a method for adjusting the voltage of the blower gears of an automobile according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0015] In one embodiment, as Figure 1 shown, a method for adjusting the voltage of the blower gears of an automobile is provided, including the following steps:

[0016] S10: Receive a gear voltage setting instruction for the automobile blower; the gear voltage setting instruction includes the blower gear.

[0017] Understandably, an automotive blower is used to deliver the cold air from the air-conditioning evaporator to the interior of the vehicle. At the same time, the noise generated by the automotive blower during operation has a significant impact on the comfort of the vehicle. And during the vehicle development process, after the selection of the automotive blower and the design of the air duct are completed, the optimization of the noise at each blower speed setting is mainly related to the rotational speed setting of the automotive blower, and the rotational speed of the automotive blower is associated with the gear voltage of the automotive blower. Therefore, a method for adjusting the gear voltage of an automotive blower is proposed in the present invention. Furthermore, after adjusting the gear voltage corresponding to each blower speed setting, the noise generated during the operation of the automotive blower is reduced, and the NVH (Noise, Vibration, Harshness) performance is improved, thereby enhancing the customer's vehicle use experience. The gear voltage setting command can be automatically generated when the user sets the automotive blower speed, or can be sent by the user through a device such as a mobile terminal. The blower speed setting is used to adjust the operating speed of the blower, thereby controlling the vehicle refrigeration rate.

[0018] S20: Determine the gear voltage corresponding to the blower speed setting according to a preset gear voltage setting model, where the preset gear voltage setting model is determined based on the highest blower noise corresponding to the highest-end voltage and the lowest blower noise corresponding to the lowest-end voltage. The highest-end voltage refers to the terminal voltage corresponding to the automotive blower at the lowest refrigeration rotational speed, and the lowest-end voltage refers to the lowest terminal voltage corresponding to the automotive blower at the highest idle rotational speed.

[0019] Understandably, the preset gear voltage setting model stores the gear voltages corresponding to each blower speed setting. The preset gear voltage setting model is obtained by pre-testing the automotive blower under different requirements (such as the maximum refrigeration requirement and the idle noise requirement pointed out in the subsequent steps). The lowest refrigeration rotational speed refers to the lowest rotational speed of the automotive blower under the premise of meeting the maximum refrigeration requirement. Among them, the maximum refrigeration requirements of different vehicles are different, and the maximum refrigeration requirement is set before the vehicle leaves the factory. Further, the maximum refrigeration requirement is used to test the lowest refrigeration rotational speed of the automotive blower in the vehicle interior within a preset time so that the vehicle temperature is reduced to the target temperature. The lowest refrigeration rotational speed corresponds to the highest-end voltage. The highest idle rotational speed refers to the highest rotational speed of the automotive blower under the premise of meeting the idle noise requirement. Among them, the idle noise requirements of different vehicles are different, and the idle noise requirement is set before the vehicle leaves the factory. Further, the idle noise requirement is used to test the highest idle rotational speed of the automotive blower when the difference between the noise generated by the automotive blower and the idle noise target value meets the preset requirements (such as the difference is within the preset noise difference range). The highest idle rotational speed corresponds to the lowest-end voltage.

[0020] S30: Control the terminal voltage of the automotive blower to switch to the gear voltage.

[0021] Specifically, after determining the gear voltage corresponding to the blower gear according to the preset gear voltage setting model, the voltage input to the vehicle blower is adjusted by regulating the regulated power supply externally connected to the vehicle blower, and at the same time, the terminal voltage of the vehicle blower is detected in real time by a multimeter connected to the harness end of the vehicle blower, so as to indicate that the gear voltage adjustment of the blower gear of the vehicle blower is completed after the terminal voltage detected by the multimeter reaches the gear voltage.

[0022] In this embodiment, the gear voltage corresponding to the blower gear is determined by the preset gear voltage setting model, and this preset gear voltage setting model comprehensively considers the maximum refrigeration demand (i.e., the lowest refrigeration speed) of the vehicle blower and the idle noise demand (i.e., the highest idle speed), making the noise linearity between the blower gears of the vehicle blower higher. Furthermore, the determined gear voltage is more suitable for each blower gear, reducing the noise mutation caused by the vehicle blower, improving the NVH performance of the vehicle, and enhancing the user's driving experience.

[0023] In one embodiment, as Figure 2 shown, before step S20, that is, before determining the gear voltage corresponding to the blower gear according to the preset gear voltage setting model, it further includes:

[0024] S01: Conduct a maximum refrigeration test on the vehicle blower to determine the lowest refrigeration speed of the vehicle blower corresponding to when the vehicle meets the maximum refrigeration demand, and record the terminal voltage corresponding to the vehicle blower at the lowest refrigeration speed as the highest terminal voltage.

[0025] It can be understood that step S20 indicates that the maximum refrigeration demand is used to test the lowest refrigeration speed of the vehicle blower when the vehicle interior temperature is reduced to the target temperature within a preset time; for example, the maximum refrigeration demand can be that the vehicle interior temperature needs to drop to 25°C within ten minutes.

[0026] Specifically, before conducting the maximum refrigeration test on the automotive blower, the vehicle is placed in a specific ambient temperature and light condition (for example, the specific ambient temperature is 40°C and the light condition is 800W light) for a period of time (such as thirty minutes, etc.) to ensure that the heat transfer between the vehicle and the external environment reaches equilibrium, thereby increasing the accuracy of the maximum refrigeration test. Further, after ensuring that the heat transfer between the vehicle and the external environment reaches equilibrium, a voltage is input to the automotive blower through a regulated power supply connected to the automotive blower, and then the rotational speed of the automotive blower is adjusted to determine the lowest refrigeration rotational speed corresponding to the automotive blower when the vehicle meets the maximum refrigeration demand. When the automotive blower is at the lowest refrigeration rotational speed, the highest terminal voltage corresponding to this lowest refrigeration rotational speed is measured through a multimeter (or other detection instrument) connected to the wire harness end of the automotive blower. Further, after the regulated power supply inputs a voltage to the automotive blower, since voltage loss will occur during the process of the voltage flowing through the wires of the automotive blower, that is, there is a voltage drop between the actual working voltage of the automotive blower and the voltage input by the regulated power supply. Therefore, in this embodiment, by detecting the terminal voltage at the wire harness end of the automotive blower, this terminal voltage can directly reflect the working voltage of the automotive blower, and the multimeter or other detection instrument for measuring the terminal voltage should be as close as possible to the wire harness port of the automotive blower to eliminate the influence brought by the voltage drop between the regulated power supply and the automotive blower and improve the accuracy rate of the voltage adjustment of the automotive blower gear.

[0027] It can be understood that when the temperature inside the vehicle is reduced by the automotive blower, the faster the rotational speed of the automotive blower, the greater the output air volume, and the faster and more obvious the cooling effect. However, at the same time, the noise generated by the automotive blower is also greater. Therefore, on the premise that the vehicle meets the maximum refrigeration demand, the lower the rotational speed of the automotive blower, the better. Therefore, the lowest refrigeration rotational speed obtained from the maximum refrigeration test in step S01 can reduce the noise brought by the automotive blower while enabling the vehicle to meet the maximum refrigeration demand and improve the user experience. Further, in this embodiment, an external regulated power supply (preferably a DC regulated power supply) is used to connect the regulated power supply to the automotive blower, and then the regulated power supply provides a stable voltage for the automotive blower within different load ranges, and the rotational speed of the automotive blower is adjusted by adjusting the voltage input to the automotive blower.

[0028] In one embodiment, in step S01, the maximum refrigeration demand includes a preset refrigeration time and a preset target refrigeration temperature. Exemplarily, the preset refrigeration time can be ten minutes; the preset target refrigeration temperature can be 25°C.

[0029] The maximum refrigeration test is performed on the automotive blower to determine the lowest refrigeration rotational speed of the automotive blower when meeting the maximum refrigeration demand, including:

[0030] Obtain the initial highest voltage corresponding to the initial highest rotational speed of the automotive blower.

[0031] Understandably, the initial maximum speed refers to the maximum speed that the vehicle blower can reach, which is also the speed corresponding to the highest blower gear of the vehicle blower. The initial maximum voltage refers to the voltage corresponding to the initial maximum speed and input from a regulated power supply to the vehicle blower.

[0032] Control the vehicle blower to rotate at the initial maximum speed, real-time detect the first in-vehicle temperature of the vehicle, and compare the first in-vehicle temperature with the preset target refrigeration temperature.

[0033] Specifically, after obtaining the initial maximum voltage corresponding to the initial maximum speed of the vehicle blower and inputting the initial maximum voltage to the vehicle blower through a regulated power supply to control the vehicle blower to rotate at the initial maximum speed, real-time detect the first in-vehicle temperature of the vehicle through a temperature sensor or the like, and compare the first in-vehicle temperature with the preset target refrigeration temperature.

[0034] When the first in-vehicle temperature is less than or equal to the preset target refrigeration temperature within the preset refrigeration time, perform a voltage drop process on the initial maximum voltage according to a preset voltage drop gradient, so that after reducing the initial maximum voltage of the vehicle blower to a first voltage drop voltage, the vehicle blower rotates at a first voltage drop speed.

[0035] Specifically, after controlling the vehicle blower to rotate at the initial maximum speed, real-time detecting the first in-vehicle temperature of the vehicle, and comparing the first in-vehicle temperature with the preset target refrigeration temperature, when the first in-vehicle temperature is less than or equal to the preset target refrigeration temperature within the preset refrigeration time, it indicates that the vehicle blower can meet the maximum refrigeration demand when rotating at the initial maximum speed. Since the noise caused by the initial maximum speed is relatively large, in order to reduce the noise of the vehicle blower, the initial maximum voltage is processed for voltage drop according to the preset voltage drop gradient. That is, the difference between the initial maximum voltage and the preset voltage drop gradient is recorded as the first voltage drop voltage, and the initial maximum voltage is adjusted down to the first voltage drop voltage through the regulated power supply connected to the vehicle blower. Then, after reducing the initial maximum voltage of the vehicle blower to the first voltage drop voltage, the vehicle blower rotates at a first voltage drop speed. Among them, the first voltage drop speed is associated with the first voltage drop voltage, that is, after inputting the first voltage drop voltage to the vehicle blower, the vehicle blower will rotate at the first voltage drop speed. The preset voltage drop gradient can be set to 0.2V, that is, the difference between the initial maximum voltage and the first voltage drop voltage is 0.2V.

[0036] Real-time detect the second in-vehicle temperature of the vehicle, and compare the second in-vehicle temperature with the preset target refrigeration temperature.

[0037] If within the preset refrigeration time after rotating at the first pressure drop rotation speed, the second vehicle interior temperature continuously remains greater than the preset target refrigeration temperature, record the initial maximum rotation speed as the minimum refrigeration rotation speed.

[0038] Specifically, after reducing the initial maximum voltage of the vehicle blower to the first pressure drop voltage and causing the vehicle blower to rotate at the first pressure drop rotation speed, the second vehicle interior temperature of the vehicle is detected in real time and compared with the preset target refrigeration temperature. If within the preset refrigeration time after rotating at the first pressure drop rotation speed, the second vehicle interior temperature continuously remains greater than the preset target refrigeration temperature, it indicates that the vehicle blower cannot meet the maximum refrigeration demand when rotating at the first pressure drop rotation speed. At this time, record the initial maximum rotation speed as the minimum refrigeration rotation speed.

[0039] In one embodiment, after comparing the second vehicle interior temperature with the preset target refrigeration temperature, it includes:

[0040] When the second vehicle interior temperature is less than or equal to the preset target refrigeration temperature within the preset refrigeration time, perform a pressure drop process on the first pressure drop voltage according to a preset pressure drop gradient to reduce the first pressure drop voltage of the vehicle blower to a second pressure drop voltage, and then cause the vehicle blower to rotate at the second pressure drop rotation speed.

[0041] Specifically, after comparing the second vehicle interior temperature with the preset target refrigeration temperature, when the second vehicle interior temperature is less than or equal to the preset target refrigeration temperature within the preset refrigeration time, perform a pressure drop process on the first pressure drop voltage according to a preset pressure drop gradient, that is, record the difference between the first pressure drop voltage and the preset pressure drop gradient as the second pressure drop voltage. Then, after reducing the first pressure drop voltage of the vehicle blower to the second pressure drop voltage, cause the vehicle blower to rotate at the second pressure drop rotation speed.

[0042] Detect the third vehicle interior temperature of the vehicle in real time and compare the third vehicle interior temperature with the preset target refrigeration temperature.

[0043] If within the preset refrigeration time after rotating at the second pressure drop rotation speed, the third vehicle interior temperature continuously remains greater than the preset target refrigeration temperature, record the first pressure drop rotation speed as the minimum refrigeration rotation speed.

[0044] Specifically, after reducing the first pressure drop voltage of the automotive blower to the second pressure drop voltage and causing the automotive blower to rotate at the second pressure drop speed, the third in-vehicle temperature of the vehicle is detected in real time and compared with a preset target refrigeration temperature. If, within a preset refrigeration time after rotating at the second pressure drop speed, the third in-vehicle temperature continuously exceeds the preset target refrigeration temperature, it indicates that the automotive blower rotating at the second pressure drop speed cannot meet the maximum refrigeration demand. Moreover, since the noise generated when the automotive blower rotates at the first pressure drop speed is less than the noise generated when the automotive blower rotates at the initial maximum speed, the first pressure drop speed is recorded as the lowest refrigeration speed.

[0045] Further, if the third in-vehicle temperature is less than or equal to the preset target refrigeration temperature within the preset refrigeration time, the second pressure drop voltage is further reduced. That is to say, there may also be a third pressure drop speed, a fourth pressure drop speed, etc. in subsequent steps, all of which can be obtained through the above steps and will not be elaborated here.

[0046] S02: Conduct an idle noise test on the automotive blower to determine the highest idle speed of the automotive blower when the vehicle meets the idle noise requirement, and record the terminal voltage corresponding to the automotive blower at the highest idle speed as the lowest terminal voltage.

[0047] It can be understood that step S20 states that the idle noise requirement is used to test the highest idle speed of the automotive blower when the difference between the noise generated by the automotive blower and the idle noise target value meets the preset requirements (such as the difference being within the preset noise difference range), and the highest idle speed corresponds to the lowest terminal voltage. Exemplarily, the idle noise target value can be set to 30 dB(A), 40 dB(A), etc.; the preset noise difference range can be from -0.1 dB(A) to 0.1 dB(A), etc.

[0048] Specifically, after the vehicle is in the idle state, the automotive blower is turned on and an idle noise test is conducted on the automotive blower. Further, the degree of influence of the noise generated by the automotive blower is mainly judged by testing the noise at the right ear of the driver. Then, the difference between the noise collected at the right ear of the driver and the idle noise target value is compared with the preset noise difference range. If the difference between the noise collected at the right ear of the driver and the idle noise target value is within the preset noise difference range, it indicates that the noise generated by the automotive blower at the current speed meets the preset requirements. Thus, the speed of the automotive blower is continuously adjusted to determine the highest idle speed of the automotive blower when the vehicle meets the idle noise requirement, and the terminal voltage corresponding to the automotive blower at the highest idle speed is recorded as the lowest terminal voltage. It can be understood that on the premise of meeting the idle noise requirement, it is desirable that the speed of the automotive blower is not too low, otherwise the air volume is too small, resulting in a slow cooling rate and affecting user comfort.

[0049] In one embodiment, in step S02, that is, the idle noise requirement includes an idle noise target value and a preset noise difference range. Exemplarily, the idle noise target value can be set to 30 dB(A), 40 dB(A), etc.; the preset noise difference range can be -0.1 dB(A) to 0.1 dB(A), etc.

[0050] Performing an idle noise test on the vehicle blower to determine the highest idle speed of the vehicle blower when the idle noise requirement is met, includes:

[0051] Obtaining an initial minimum voltage corresponding to the initial minimum speed of the vehicle blower.

[0052] It can be understood that the initial minimum speed refers to the lowest speed that the vehicle blower can reach, which is also the speed corresponding to the lowest blower gear of the vehicle blower. The initial minimum voltage refers to the voltage input from a regulated power supply to the vehicle blower corresponding to the initial minimum speed.

[0053] When the vehicle is in an idle state, controlling the vehicle blower to rotate at the initial minimum speed and collecting the first idle noise corresponding to the vehicle blower in real time.

[0054] It can be understood that the idle state refers to a working condition of the vehicle's engine. The lowest speed that maintains the stable operation of the engine in this condition is the idle speed. Further, when controlling the vehicle to be in an idle state, controlling the vehicle blower to rotate at the initial minimum speed and collecting the first idle noise corresponding to the vehicle blower in real time. For example, placing a noise measurement device at the right ear of the driver and collecting the noise at the right ear of the driver is the first idle noise.

[0055] Recording the difference between the first idle noise and the idle noise target value as the first noise difference.

[0056] When the first noise difference is within the preset noise difference range, performing a voltage boost process on the initial minimum voltage according to a preset boost gradient to increase the initial minimum voltage of the vehicle blower to a first boosted voltage, and then making the vehicle blower rotate at a first boosted speed.

[0057] Specifically, after controlling the automotive blower to rotate at the initial lowest speed and collecting the first idling noise corresponding to the automotive blower in real time, the difference between the first idling noise and the target value of the idling noise is recorded as the first noise difference, and it is determined whether the first noise difference is within the preset noise difference range. If the first noise difference is within the preset noise difference range, the initial lowest voltage is boosted according to the preset boosting gradient, that is, the sum of the initial lowest voltage and the preset boosting gradient is recorded as the first boosted voltage. The initial lowest voltage is increased to the first boosted voltage through the regulated power supply connected to the automotive blower. After that, after raising the initial lowest voltage of the automotive blower to the first boosted voltage, the automotive blower rotates at the first boosted speed. Among them, the preset boosting gradient can be 0.3V, that is, the difference between the first boosted voltage and the initial lowest voltage is 0.3V.

[0058] Collect the second idling noise corresponding to the automotive blower in real time, and record the difference between the second idling noise and the target value of the idling noise as the second noise difference.

[0059] Specifically, after raising the initial lowest voltage of the automotive blower to the first boosted voltage and making the automotive blower rotate at the first boosted speed, collect the second idling noise corresponding to the automotive blower in real time. For example, place the noise measurement equipment at the right ear of the driver, and the noise collected at the right ear of the driver is the second idling noise, and record the difference between the second idling noise and the target value of the idling noise as the second noise difference.

[0060] When the second noise difference exceeds the preset noise difference range, record the initial lowest speed as the highest idling speed.

[0061] Specifically, after recording the difference between the second idling noise and the target value of the idling noise as the second noise difference, when the second noise difference exceeds the preset noise difference range, it indicates that the noise generated when the automotive blower rotates at the first boosted speed is too large and does not meet the idling noise requirement. Therefore, record the initial lowest speed as the highest idling speed.

[0062] In an embodiment, after recording the difference between the second idling noise and the target value of the idling noise as the second noise difference, it includes:

[0063] When the second noise difference is within the preset noise difference range, boost the first boosted voltage according to the preset boosting gradient to raise the first boosted voltage of the automotive blower to the second boosted voltage, and then make the automotive blower rotate at the second boosted speed.

[0064] Specifically, after recording the difference between the second idle noise and the idle noise target value as the second noise difference, it is determined whether the second noise difference is within a preset noise difference range. If the second noise difference is within the preset noise difference range, the first boost voltage is boosted according to a preset boost gradient, that is, the sum of the first boost voltage and the preset boost gradient is recorded as the second boost voltage. The regulated power supply connected to the vehicle blower raises the first boost voltage to the second boost voltage. After that, after raising the first boost voltage of the vehicle blower to the second boost voltage, the vehicle blower rotates at the second boost speed. The second boost speed is associated with the second boost voltage.

[0065] The third idle noise corresponding to the vehicle blower is collected in real time, and the difference between the third idle noise and the idle noise target value is recorded as the third noise difference.

[0066] Specifically, after raising the first boost voltage of the vehicle blower to the second boost voltage and making the vehicle blower rotate at the second boost speed, the third idle noise corresponding to the vehicle blower is collected in real time. For example, the noise measurement equipment is placed at the right ear of the driver, and the noise at the right ear of the driver is collected as the third idle noise, and the difference between the third idle noise and the idle noise target value is recorded as the third noise difference.

[0067] When the third noise difference exceeds the preset noise difference range, the first boost speed is recorded as the highest idle speed.

[0068] Specifically, after recording the difference between the third idle noise and the idle noise target value as the third noise difference, when the third noise difference exceeds the preset noise difference range, it indicates that the noise generated when the vehicle blower rotates at the second boost speed is too large and does not meet the idle noise requirement. Therefore, the first boost speed is recorded as the highest idle speed.

[0069] Further, when the third noise difference is within the preset noise difference range, the second boost speed is boosted. That is to say, there may also be a third boost speed, a fourth boost speed, etc. in the subsequent steps, which can all be obtained through the above steps and will not be elaborated here.

[0070] S03: Control the vehicle blower to work alone, and collect the highest blower noise corresponding to the highest terminal voltage and the lowest blower noise corresponding to the lowest terminal voltage during the process of the vehicle blower working alone.

[0071] Specifically, after obtaining the highest-end voltage through the maximum refrigeration test of the automotive blower and the lowest-end voltage through the idling noise test of the automotive blower, control the automotive blower to work alone, and then determine that the current noise of the vehicle only comes from the automotive blower. During the process of the automotive blower working alone at the highest-end voltage, collect the noise of the driver's right ear and record it as the highest blower noise corresponding to the highest-end voltage; similarly, during the process of the automotive blower working alone at the lowest-end voltage, collect the noise of the driver's right ear and record it as the lowest blower noise corresponding to the lowest-end voltage. It can be understood that the noise emitted by the automotive blower is related to its rotational speed (the higher the rotational speed, the greater the noise; the lower the rotational speed, the smaller the noise), and the rotational speed is determined by the working voltage or the input voltage (the greater the voltage, the higher the rotational speed; the smaller the voltage, the lower the rotational speed). Therefore, the higher the end voltage, the higher the corresponding noise. Thus, the noise corresponding to the highest-end voltage is the highest blower noise, and the noise corresponding to the lowest-end voltage is the lowest blower noise, and the highest blower noise is greater than the lowest blower noise.

[0072] S04: According to the highest blower noise and the lowest blower noise, conduct a gear voltage test on the automotive blower to obtain the gear voltages corresponding to different blower gears of the automotive blower.

[0073] It can be understood that the gear voltage test is used to determine the gear voltages corresponding to different blower gears of the automotive blower.

[0074] In one embodiment, in step S04, it includes:

[0075] Obtain the blower rotational speeds corresponding to each blower gear.

[0076] It can be understood that the blower rotational speed is the initial rotational speed assigned to each blower gear of the automotive blower before the vehicle leaves the factory.

[0077] According to the highest blower noise, the lowest blower noise, and the number of blower gears, determine the target blower noise corresponding to each blower gear.

[0078] It can be understood that the number of blower gears refers to the number of gears of the automotive blower. Exemplarily, assume that the lowest gear of the automotive blower is gear 1 and the highest gear is gear 7, then the corresponding number of blower gears is 7.

[0079] Specifically, the target blower noise corresponding to each blower gear can be determined through the following steps, including:

[0080] According to the highest blower noise and the lowest blower noise, determine the blower noise difference, and according to the blower noise difference and the number of blower gears, determine the noise growth amount.

[0081] Specifically, after determining the highest blower noise and the lowest blower noise, record the difference between the highest blower noise and the lowest blower noise as the blower noise difference, and the noise growth amount can be determined according to the following expression:

[0082]

[0083] wherein, is the noise growth amount; is the highest blower noise; is the lowest blower noise; is the number of blower gears.

[0084] Determine the target blower noise corresponding to each blower gear according to the highest blower noise, the lowest blower noise, and the noise growth amount.

[0085] Specifically, after determining the noise growth amount according to the blower noise difference and the number of blower gears, determine the target blower noise corresponding to each blower gear according to the highest blower noise, the lowest blower noise, and the noise growth amount. Exemplarily, assume that the highest blower noise is 62 dB(A), the lowest blower noise is 35 dB(A), and the number of blower gears is 7, then the corresponding noise growth amount is 4.5. Further, record the lowest blower noise as the target blower noise corresponding to the first blower gear, that is, the target blower noise of the first blower gear is 35 dB(A); record the highest blower noise as the target blower noise corresponding to the seventh blower gear, that is, the target blower noise of the seventh blower gear is 62 dB(A); and the target blower gears corresponding to the second to sixth blower gears are in turn: 39.5 dB(A), 44 dB(A), 48.5 dB(A), 53 dB(A), 57.5 dB(A), that is, the difference between the target blower noise of the latter blower gear and the target blower noise of the previous blower gear is the noise growth amount.

[0086] Control the vehicle blower to rotate at the blower speeds corresponding to each blower gear in sequence, and detect the gear detection noise corresponding to the blower gear in real time.

[0087] Specifically, after determining the target blower noise corresponding to each blower gear according to the highest blower noise, the lowest blower noise, and the number of blower gears, control the vehicle blower to rotate at the blower speeds corresponding to each blower gear in sequence, and detect the gear detection noise corresponding to the blower gear in real time.

[0088] When the detected noise at the gear reaches the target blower noise corresponding thereto, obtain the current blower terminal voltage of the vehicle blower.

[0089] Specifically, control the vehicle blower to rotate at the blower speed corresponding to each blower gear in sequence, and detect the gear-detected noise corresponding to the blower gear in real time. When the gear-detected noise reaches the target blower noise corresponding thereto, or when the difference between the gear-detected noise and the target blower noise is within a preset noise difference range (the preset noise difference range can be 0.1 dB(A)), obtain the current blower terminal voltage of the vehicle blower.

[0090] Further, if the gear-detected noise does not reach the target blower noise corresponding thereto, the blower speed corresponding thereto can be increased to obtain the current blower terminal voltage of the blower when the gear-detected noise reaches the target blower noise corresponding thereto; if the gear-detected noise is greater than the target blower noise corresponding thereto, and the difference between the gear-detected noise and the target blower noise exceeds the preset noise difference range, the blower speed corresponding thereto can be decreased to obtain the current blower terminal voltage of the vehicle blower when the gear-detected noise reaches the target blower noise corresponding thereto and the difference between the gear-detected noise and the target blower noise is within the preset noise difference range.

[0091] Further, the above steps can also directly adjust the voltage input to the vehicle blower from low to high through a voltage stabilizer power supply externally connected to the vehicle blower, so that the speed of the vehicle blower gradually increases. At this time, synchronously test the noise in the driver's right ear (i.e., the gear-detected noise), and when the gear-detected noise reaches the target blower noise corresponding thereto, or when the difference between the gear-detected noise and the target blower noise is within the preset noise difference range, obtain the current blower terminal voltage of the vehicle blower through a multimeter connected to the wire harness end of the vehicle blower.

[0092] Record the current blower terminal voltage as the gear voltage corresponding to the blower gear corresponding thereto.

[0093] Specifically, after obtaining the current blower terminal voltage of the blower when the gear-detected noise reaches the target blower noise corresponding thereto, record the current blower terminal voltage as the gear voltage corresponding to the blower gear corresponding thereto.

[0094] S05: Generate a preset gear voltage setting model according to the blower gear and the gear voltage corresponding thereto.

[0095] Specifically, after performing gear voltage tests on the automotive blower based on the highest blower noise and the lowest blower noise, and obtaining the gear voltages corresponding to different blower gears of the automotive blower, the blower gears and their corresponding gear voltages are associated, and the associated blower gears and the corresponding gear voltages are used to generate a preset gear voltage setting model, so that after receiving a gear voltage setting instruction for the automotive blower, the gear voltage corresponding to the blower gear can be determined according to this preset gear voltage setting model, thereby controlling the terminal voltage of the automotive blower to switch to the gear voltage, improving the efficiency and accuracy of the adjustment of the gear voltage of the automotive blower.

[0096] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not imply the order of execution. The order of execution of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0097] In one embodiment, an automobile is provided, which includes a controller for executing the method for adjusting the gear voltage of the automotive blower in the above embodiment.

[0098] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database or other medium used in the various embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0099] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above.

[0100] The above-described embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for adjusting the voltage of the blower gears of an automobile, characterized in that, Including: Receiving a gear voltage setting instruction for an automotive blower; the gear voltage setting instruction includes a blower gear; Determining a gear voltage corresponding to the blower gear according to a preset gear voltage setting model, the preset gear voltage setting model being determined according to the highest blower noise corresponding to the highest-end voltage and the lowest blower noise corresponding to the lowest-end voltage, the highest-end voltage being the terminal voltage corresponding to the automotive blower at the lowest refrigeration speed, the lowest-end voltage being the terminal voltage corresponding to the automotive blower at the highest idle speed, the highest idle speed being the highest speed of the automotive blower on the premise of meeting the idle noise requirement; the lowest refrigeration speed being the lowest speed of the automotive blower on the premise of meeting the maximum refrigeration requirement; Controlling the terminal voltage of the automotive blower to switch to the gear voltage.

2. The method for adjusting the gear voltage of an automotive blower as claimed in claim 1, wherein Before determining the gear voltage corresponding to the blower gear according to the preset gear voltage setting model, it further includes: Conducting a maximum refrigeration test on the automotive blower to determine the lowest refrigeration speed of the automotive blower when the vehicle meets the maximum refrigeration requirement, and recording the terminal voltage corresponding to the automotive blower at the lowest refrigeration speed as the highest-end voltage; Conducting an idle noise test on the automotive blower to determine the highest idle speed of the automotive blower when the vehicle meets the idle noise requirement, and recording the terminal voltage corresponding to the automotive blower at the highest idle speed as the lowest-end voltage; Controlling the automotive blower to work alone, and collecting the highest blower noise corresponding to the highest-end voltage and the lowest blower noise corresponding to the lowest-end voltage during the process of the automotive blower working alone; Conducting a gear voltage test on the automotive blower according to the highest blower noise and the lowest blower noise to obtain the gear voltages corresponding to different blower gears of the automotive blower; Generating a preset gear voltage setting model according to the blower gear and its corresponding gear voltage.

3. The method for adjusting the voltage of the automotive blower gear according to claim 2, wherein, The maximum refrigeration requirement includes a preset refrigeration time and a preset target refrigeration temperature; The conducting a maximum refrigeration test on the automotive blower to determine the lowest refrigeration speed of the automotive blower when meeting the maximum refrigeration requirement includes: Obtaining an initial highest voltage corresponding to the initial highest speed of the automotive blower; Controlling the automotive blower to rotate at the initial highest speed, and real-time detecting the first in-vehicle temperature of the vehicle, and comparing the first in-vehicle temperature with the preset target refrigeration temperature; When the first in-vehicle temperature is less than or equal to the preset target refrigeration temperature within the preset refrigeration time, performing a voltage drop process on the initial highest voltage according to a preset voltage drop gradient to reduce the initial highest voltage of the automotive blower to a first voltage-drop voltage, and then making the automotive blower rotate at a first voltage-drop speed; Real-time detecting the second in-vehicle temperature of the vehicle, and comparing the second in-vehicle temperature with the preset target refrigeration temperature; If within the preset refrigeration time after rotating at the first pressure drop speed, the second in-vehicle temperature continuously remains greater than the preset target refrigeration temperature, record the initial maximum speed as the minimum refrigeration speed.

4. The method for adjusting the voltage of the automotive blower gear according to claim 3, characterized in that, After comparing the second in-vehicle temperature with the preset target refrigeration temperature, it includes: When the second in-vehicle temperature is less than or equal to the preset target refrigeration temperature within the preset refrigeration time, perform a pressure drop process on the first pressure drop voltage according to a preset pressure drop gradient, so that after reducing the first pressure drop voltage of the vehicle blower to a second pressure drop voltage, the vehicle blower rotates at the second pressure drop speed; Real-time detect the third in-vehicle temperature of the vehicle, and compare the third in-vehicle temperature with the preset target refrigeration temperature; If within the preset refrigeration time after rotating at the second pressure drop speed, the third in-vehicle temperature continuously remains greater than the preset target refrigeration temperature, record the first pressure drop speed as the minimum refrigeration speed.

5. The method for adjusting the gear voltage of an automotive blower according to claim 3, characterized in that, The performing a pressure drop process on the initial maximum voltage according to a preset pressure drop gradient includes: Determine the first pressure drop voltage according to the initial maximum voltage and the preset pressure drop gradient; Adjust the initial maximum voltage down to the first pressure drop voltage through a voltage stabilizer power supply connected to the vehicle blower.

6. The method for adjusting the voltage of the automotive blower gear according to claim 2, characterized in that, The idle noise requirement includes an idle noise target value and a preset noise difference range; The performing an idle noise test on the vehicle blower to determine the highest idle speed corresponding to the vehicle blower when the vehicle meets the idle noise requirement includes: Obtain the initial minimum voltage corresponding to the initial minimum speed of the vehicle blower; When the vehicle is in an idle state, control the vehicle blower to rotate at the initial minimum speed, and real-time collect the first idle noise corresponding to the vehicle blower; Record the difference between the first idle noise and the idle noise target value as the first noise difference; When the first noise difference is within the preset noise difference range, perform a boost process on the initial minimum voltage according to a preset boost gradient, so that after increasing the initial minimum voltage of the vehicle blower to a first boost voltage, the vehicle blower rotates at the first boost speed; Real-time collect the second idle noise corresponding to the vehicle blower, and record the difference between the second idle noise and the idle noise target value as the second noise difference; When the second noise difference exceeds the preset noise difference range, record the initial minimum speed as the highest idle speed.

7. The method for adjusting the gear voltage of an automotive blower as claimed in claim 6, wherein, After recording the difference between the second idle noise and the idle noise target value as the second noise difference, it includes: When the second noise difference is within the preset noise difference range, perform a boost process on the first boost voltage according to the preset boost gradient, so that after increasing the first boost voltage of the vehicle blower to a second boost voltage, the vehicle blower rotates at the second boost speed; Real-time collect the third idle noise corresponding to the vehicle blower, and record the difference between the third idle noise and the idle noise target value as the third noise difference; When the third noise difference exceeds the preset noise difference range, record the first boost speed as the highest idle speed.

8. The method for adjusting the gear voltage of an automotive blower according to claim 2, wherein The step of performing a gear voltage test on the vehicle blower according to the highest blower noise and the lowest blower noise to obtain the gear voltages corresponding to different blower gears of the vehicle blower includes: Obtain the blower speeds corresponding to each of the blower gears; Determine the target blower noise corresponding to each of the blower gears according to the highest blower noise, the lowest blower noise, and the number of the blower gears; Control the vehicle blower to rotate in sequence at the blower speeds corresponding to each of the blower gears, and detect in real time the gear detection noise corresponding to the blower gear; When the gear detection noise reaches the corresponding target blower noise, obtain the current blower terminal voltage of the vehicle blower; Record the current blower terminal voltage as the gear voltage corresponding to the blower gear corresponding thereto.

9. The method for adjusting the voltage of the automotive blower gear according to claim 8, characterized in that, The step of determining the target blower noise corresponding to each of the blower gears according to the highest blower noise, the lowest blower noise, and the number of the blower gears includes: Determine the blower noise difference according to the highest blower noise and the lowest blower noise, and determine the noise growth amount according to the blower noise difference and the number of the blower gears; Determine the target blower noise corresponding to each of the blower gears according to the highest blower noise, the lowest blower noise, and the noise growth amount.

10. A vehicle, characterized in that, It includes a controller for executing the vehicle blower gear voltage adjustment method according to any one of claims 1 to 9.

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