Control method and device of vehicle cooling system, vehicle and storage medium

Abstract

This invention discloses a control method, apparatus, vehicle, and storage medium for a vehicle cooling system. The method includes: in response to detecting that the vehicle is in a first driving condition, acquiring the system temperature of the cooling system and the noise level of the expansion tank (in decibels), wherein the cooling system includes an expansion tank; adjusting a system control strategy based on the system temperature and / or noise level to obtain a target control strategy, wherein the system control strategy characterizes the control strategy of the cooling system when the vehicle is driving in a second driving condition, where the vehicle speed in the second driving condition is greater than the vehicle speed in the first driving condition; and controlling the operation of the cooling system based on the target control strategy. This invention solves the technical problem of excessive operating noise in cooling systems during operation, a problem previously discussed in related technologies.

Description

Technical Field

[0001] This invention relates to the field of vehicle control, and more specifically, to a control method, apparatus, vehicle, and storage medium for a vehicle cooling system. Background Technology

[0002] The expansion tank in the cooling system mainly serves to remove excess gas from the cavity volume using the degassing pipe, thereby maintaining stable air pressure and temperature in the cooling system. However, during the actual exhaust process, the flow rate discharged through the degassing pipe is mostly a gas-liquid mixture, which usually contains a large number of air bubbles. When these air bubbles enter the air, they may burst, producing a sparse water flow sound. This causes vehicle users to hear noise from time to time due to the bursting of air bubbles, affecting the user's driving experience. Summary of the Invention

[0003] This invention provides a control method, apparatus, vehicle, and storage medium for a vehicle cooling system, to at least solve the technical problem of excessive operating noise in the cooling system during operation in related technologies.

[0004] According to one aspect of the present invention, a control method for a vehicle cooling system is provided, comprising: in response to detecting that the vehicle is in a first driving condition, acquiring the system temperature of the cooling system and the noise level of the expansion tank, wherein the cooling system includes an expansion tank; adjusting a system control strategy based on the system temperature and / or the noise level to obtain a target control strategy, wherein the system control strategy is used to characterize the control strategy of the cooling system when the vehicle is driving in a second driving condition, wherein the driving speed of the vehicle in the second driving condition is greater than the driving speed of the vehicle in the first driving condition; and controlling the operation of the cooling system based on the target control strategy.

[0005] Furthermore, the cooling system also includes a water pump, and the system control strategy includes at least a water pump control strategy and a kettle control strategy. The system control strategy is adjusted based on the system temperature and / or noise level, including: adjusting the water pump control strategy based on the system temperature in response to the system temperature being lower than a preset temperature to obtain a first control strategy; and adjusting the kettle control strategy based on the noise level in response to the noise level being higher than a preset decibel to obtain a second control strategy.

[0006] Furthermore, the water pump control strategy is adjusted based on the system temperature to obtain a first control strategy, including: obtaining the difference between the system temperature and the preset temperature to obtain a temperature difference value; adjusting the current speed of the water pump based on the temperature difference value to obtain a target speed, wherein the target speed is less than the current speed; and adjusting the water pump control strategy based on the target speed to obtain the first control strategy.

[0007] Furthermore, the expansion kettle includes at least: a degassing pipe; and a second control strategy is obtained by adjusting the kettle control strategy based on the noise level, including: obtaining the difference between the noise level and a preset level to obtain a decibel difference; adjusting the current flow rate of the degassing pipe based on the decibel difference to obtain a target flow rate, wherein the target flow rate is less than the current flow rate; and adjusting the kettle control strategy based on the target flow rate to obtain the second control strategy.

[0008] Furthermore, the above method also includes: obtaining a user profile of at least one user on the vehicle, and a vehicle identifier; obtaining at least one impact decibel based on the user profile, and obtaining the vehicle's calibration decibel based on the vehicle identifier, wherein the impact decibel is used to characterize the decibel level at which the noise decibel determined by the user will affect the user, and the calibration decibel is used to characterize the decibel level at which the noise decibel obtained through statistical calibration will affect the user; weighting the impact decibel to obtain a weighted decibel; and adjusting the calibration decibel based on the weighted decibel to obtain a preset decibel.

[0009] Furthermore, after controlling the operation of the cooling system based on the target control strategy, the above method further includes: monitoring the noise of the expansion tank to obtain the monitored decibel level; determining the exhaust state of the expansion tank based on the noise decibel level and the monitored decibel level, wherein the exhaust state is used to characterize whether the exhaust efficiency of the expansion tank is less than or equal to a preset efficiency threshold; in response to the exhaust efficiency being less than or equal to the preset efficiency threshold, adjusting the tank control strategy in the target control strategy according to a preset flow rate to obtain a third control strategy, wherein the preset flow rate is used to characterize the minimum flow rate of the degassing pipe; and controlling the expansion tank to exhaust gas based on the third control strategy.

[0010] Furthermore, the exhaust state of the expansion kettle is determined based on the noise decibels and the monitored decibels, including: constructing a noise change curve of the expansion kettle based on the noise decibels and the monitored decibels; determining the noise change rate of the expansion kettle based on the noise change curve; determining the exhaust state as exhaust efficiency greater than a preset efficiency threshold in response to the noise change rate being greater than a preset change rate threshold; and determining the exhaust state as exhaust efficiency less than or equal to a preset efficiency threshold in response to the noise change rate being less than or equal to the preset change rate threshold.

[0011] Furthermore, the expansion tank includes: a guide pipe, on which multiple evenly distributed guide grooves are provided, the guide grooves being located below the liquid surface of the coolant in the expansion tank.

[0012] According to another aspect of the present invention, a control device for a vehicle cooling system is also provided, comprising: a first acquisition module, configured to acquire the system temperature of the cooling system and the noise level of the expansion tank in decibels in response to detecting that the vehicle is in a first driving condition, wherein the cooling system includes an expansion tank; a strategy adjustment module, configured to adjust a system control strategy based on the system temperature and / or the noise level in decibels to obtain a target control strategy, wherein the system control strategy is used to characterize the control strategy of the cooling system when the vehicle is driving in a second driving condition, wherein the driving speed of the vehicle in the second driving condition is greater than the driving speed of the vehicle in the first driving condition; and a system control module, configured to control the operation of the cooling system based on the target control strategy.

[0013] Furthermore, the cooling system also includes a water pump, and the system control strategy includes at least a water pump control strategy and a kettle control strategy. The strategy adjustment module includes a first adjustment unit, used to adjust the water pump control strategy based on the system temperature in response to the system temperature being lower than a preset temperature, to obtain a first control strategy; and a second adjustment unit, used to adjust the kettle control strategy based on the noise level in response to the noise level being higher than a preset decibel, to obtain a second control strategy.

[0014] Furthermore, the first adjustment unit is also used to: obtain the difference between the system temperature and the preset temperature to obtain a temperature difference value; adjust the current speed of the water pump based on the temperature difference value to obtain a target speed, wherein the target speed is less than the current speed; and adjust the water pump control strategy based on the target speed to obtain a first control strategy.

[0015] Furthermore, the expansion kettle includes at least a degassing pipe, and the second adjustment unit is also used to: obtain the difference between the noise level and the preset degassing level to obtain the degassing difference; adjust the current flow rate of the degassing pipe based on the degassing difference to obtain the target flow rate, wherein the target flow rate is less than the current flow rate; and adjust the kettle control strategy based on the target flow rate to obtain the second control strategy.

[0016] Furthermore, the aforementioned device further includes: a second acquisition module, used to acquire a user profile of at least one user on the vehicle, and a vehicle identifier; a decibel acquisition module, used to acquire at least one impact decibel based on the user profile, and to acquire the vehicle's calibration decibel based on the vehicle identifier, wherein the impact decibel is used to characterize the decibel level at which a noise decibel determined by the user will affect the user, and the calibration decibel is used to characterize the decibel level at which a noise decibel obtained through statistical calibration will affect the user; a decibel weighting module, used to weight the impact decibel to obtain a weighted decibel; and a decibel adjustment module, used to adjust the calibration decibel based on the weighted decibel to obtain a preset decibel.

[0017] Furthermore, the aforementioned device also includes: a decibel monitoring module for monitoring the noise of the expansion kettle to obtain the monitored decibel level; a state determination module for determining the venting state of the expansion kettle based on the noise decibel level and the monitored decibel level, wherein the venting state characterizes whether the venting efficiency of the expansion kettle is less than or equal to a preset efficiency threshold; a first adjustment module for adjusting the kettle control strategy in the target control strategy according to a preset flow rate in response to the venting efficiency being less than or equal to the preset efficiency threshold, to obtain a third control strategy, wherein the preset flow rate characterizes the minimum flow rate of the degassing pipe; and a kettle venting module for controlling the expansion kettle to vent based on the third control strategy.

[0018] Furthermore, the state determination module includes: a curve construction unit for constructing a noise change curve of the expansion kettle based on noise decibels and monitored decibels; a change rate determination unit for determining the noise change rate of the expansion kettle based on the noise change curve; a first determination unit for determining the exhaust state as exhaust efficiency greater than a preset efficiency threshold in response to a noise change rate greater than a preset change rate threshold; and a second determination unit for determining the exhaust state as exhaust efficiency less than or equal to a preset efficiency threshold in response to a noise change rate less than or equal to a preset change rate threshold.

[0019] Furthermore, the expansion tank includes: a guide pipe, on which multiple evenly distributed guide grooves are provided, the guide grooves being located below the liquid surface of the coolant in the expansion tank.

[0020] According to another aspect of the present invention, a vehicle is also provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention during runtime.

[0021] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0022] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0023] According to another aspect of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0024] According to another aspect of the present invention, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of the present invention.

[0025] In this embodiment of the invention, in response to detecting that the vehicle is in a first driving condition, the system temperature of the cooling system and the noise level of the expansion tank are obtained; the system control strategy is adjusted based on the system temperature and / or noise level to obtain a target control strategy; the cooling system is controlled based on the target control strategy. By adjusting the system control strategy for a second driving condition where the user is less likely to hear noise under the first driving condition where the user can easily hear the noise, based on the aforementioned system temperature and noise level, it is possible to ensure that the adjusted target control strategy is more in line with the current driving state of the vehicle. This achieves the goal of reducing the noise level of the expansion tank to a level that will not affect the user while ensuring the normal operation of the cooling system to guarantee vehicle safety, thereby improving the user's driving experience and solving the technical problem of excessive operating noise of the cooling system in related technologies. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0027] Figure 1 This is a flowchart illustrating a control method for a vehicle cooling system according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of a vertical cross-section of an expansion tank according to an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of an expansion tank degassing pipe according to an embodiment of this application;

[0030] Figure 4 This is a schematic diagram illustrating a cooling system control process according to an embodiment of this application;

[0031] Figure 5 This is a structural block diagram of a control device for a vehicle cooling system according to an embodiment of this application. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] According to an embodiment of the present invention, a method for controlling a vehicle cooling system is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0035] Figure 1 This is a flowchart illustrating a control method for a vehicle cooling system according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0036] Step S102: In response to detecting that the vehicle is in the first driving condition, the system temperature of the cooling system and the noise level of the expansion tank are obtained.

[0037] The cooling system includes an expansion tank.

[0038] The aforementioned first driving condition can refer to the driving condition when the vehicle is traveling at low speed. For example, when the current driving speed of the vehicle is less than a preset speed threshold, it can be determined that the vehicle is currently in the aforementioned first driving condition.

[0039] In one optional embodiment, considering that during vehicle operation, if the vehicle speed is relatively high, for example, greater than a preset speed threshold, the tire noise and wind noise can usually cover the noise generated by the expansion tank in the cooling system, such as water flow and exhaust sounds, but if the vehicle speed is relatively low, for example, less than the preset speed threshold, the tire noise and wind noise may not cover the noise in the expansion tank, and the user in the vehicle may feel annoyed by the noise in the expansion tank. Therefore, in order to ensure the user's experience when using the vehicle, the vehicle cooling system control system (hereinafter referred to as the control system) can acquire the vehicle speed in real time and determine whether the vehicle is in a first driving condition based on the acquired speed. If the detection result is that the vehicle is in a second driving condition, the control system can determine whether the vehicle is in a second driving condition. In the first driving condition, where the vehicle speed is greater than or equal to a preset speed threshold, the noise from the expansion tank is considered to have no impact on the users in the vehicle. In this case, the control system can continue to operate the cooling system according to its current operating parameters. However, if the detection result indicates the vehicle is in the second driving condition, where the vehicle speed is less than the preset speed threshold, the noise from the expansion tank is considered to have an impact on the users. In this case, the control system can further acquire the current noise level of the expansion tank in decibels. This allows the control system to determine whether to adjust the current operating strategy of the expansion tank, such as the water pump operation strategy or the expansion tank's own exhaust strategy, to reduce the noise generated by the expansion tank. Considering that the expansion tank is part of the aforementioned cooling system, which is used to maintain vehicle temperature for safety, the current system temperature of the cooling system can also be acquired while acquiring the expansion tank's expansion decibels. This helps to avoid situations where adjusting the current operating strategy of the expansion tank could lead to a safety risk due to increased system temperature.

[0040] Step S104: Adjust the system control strategy based on system temperature and / or noise decibels to obtain the target control strategy.

[0041] The system control strategy is used to characterize the control strategy of the cooling system when the vehicle is driving in the second driving condition, where the vehicle speed is greater than that in the first driving condition.

[0042] In one optional embodiment, in order to ensure that the adjusted strategy is more in line with the vehicle's driving conditions, so as to reduce the impact of noise from the expansion tank on the user while ensuring the safety of the vehicle during driving, the control system can adjust the strategy used to control the operation of the cooling system when the vehicle is driving normally in the second driving condition, i.e., the above-mentioned system control strategy, based on the system temperature and noise decibels obtained above, to obtain the corresponding target control strategy. For example, if the noise level and system temperature are both high, it indicates that the cooling system needs to be kept running to lower the system temperature. Correspondingly, there's no need to adjust the operating strategy of cooling equipment used to cool the vehicle as a whole, such as fans and water pumps; only the venting strategy of the expansion tank needs to be adjusted to reduce noise generated in the expansion tank. If the noise level and system temperature are both low, it means that not much equipment is needed to lower the system temperature, and the noise from the expansion tank will not affect the user. In this case, only the operating strategy of the cooling equipment needs to be changed to reduce operating costs. If the noise level and system temperature are both high, then both the operating strategy of the cooling equipment and the venting strategy of the expansion tank need to be adjusted simultaneously to achieve the target control strategy described above. This ensures safe vehicle operation while minimizing the impact of noise from the expansion tank on the user.

[0043] Step S106: Control the operation of the cooling system based on the target control strategy.

[0044] In one optional embodiment, after adjusting the system control strategy to obtain the target control strategy, the control system can control the operation of the cooling system according to the target control strategy, while continuously detecting the system temperature of the cooling system and the noise level of the expansion tank. If the detected system temperature or noise level is still abnormal after running according to the target control strategy for a period of time, such as the system temperature being too low or the noise level being too high, the control system can continue to adjust the target control strategy to ensure safe vehicle operation while reducing the operating cost of the cooling system and the impact of noise from the expansion tank on the user.

[0045] In this embodiment of the invention, in response to detecting that the vehicle is in a first driving condition, the system temperature of the cooling system and the noise level of the expansion tank are obtained; the system control strategy is adjusted based on the system temperature and / or noise level to obtain a target control strategy; the cooling system is controlled based on the target control strategy. By adjusting the system control strategy for a second driving condition where the user is less likely to hear noise under the first driving condition where the user can easily hear the noise, based on the aforementioned system temperature and noise level, it is possible to ensure that the adjusted target control strategy is more in line with the current driving state of the vehicle. This achieves the goal of reducing the noise level of the expansion tank to a level that will not affect the user while ensuring the normal operation of the cooling system to ensure vehicle safety, thereby improving the user's driving experience and solving the technical problem in related technologies where the cooling system has a negative impact on users in the vehicle during operation.

[0046] Furthermore, the cooling system also includes a water pump, and the system control strategy includes at least a water pump control strategy and a kettle control strategy. The system control strategy is adjusted based on the system temperature and / or noise level, including: adjusting the water pump control strategy based on the system temperature in response to the system temperature being lower than a preset temperature to obtain a first control strategy; and adjusting the kettle control strategy based on the noise level in response to the noise level being higher than a preset decibel to obtain a second control strategy.

[0047] In one optional embodiment, the cooling system may include at least a water pump for transmitting coolant. Corresponding to the water pump and expansion tank, the system control strategy may include at least two parts: a water pump control strategy and a tank control strategy. When adjusting the system control strategy, the control system may first compare the obtained system temperature and noise level with a preset temperature and a preset decibel level, respectively, and then adjust the water pump control strategy or the tank control strategy according to the comparison results. For example, if the system temperature is greater than or equal to the preset temperature, it indicates that the vehicle currently needs cooling, and the corresponding control system may maintain the water pump control strategy used to control the cooling equipment, such as the water pump. If the system temperature is less than the preset temperature, it indicates that the vehicle's current cooling demand is reduced, and the corresponding control system may adjust the water pump control strategy to obtain a first control strategy, wherein the cooling effect of the first control strategy is less than the cooling effect of the water pump control strategy. If the noise level is less than or equal to the preset decibel level, it means that the current noise from the expansion tank will not affect the users in the vehicle. The corresponding control system can continue to control the expansion tank according to the above-mentioned tank control strategy. If the noise level is greater than the preset decibel level, it means that the current noise from the expansion tank may affect the users in the vehicle. The corresponding control system can adjust the above-mentioned tank control strategy, such as adjusting the expansion tank's venting strategy, to reduce the noise generated by the expansion tank, thereby reducing the impact of noise on the users.

[0048] Furthermore, the water pump control strategy is adjusted based on the system temperature to obtain a first control strategy, including: obtaining the difference between the system temperature and the preset temperature to obtain a temperature difference value; adjusting the current speed of the water pump based on the temperature difference value to obtain a target speed, wherein the target speed is less than the current speed; and adjusting the water pump control strategy based on the target speed to obtain the first control strategy.

[0049] In one optional embodiment, when adjusting the water pump control strategy, the control system can first obtain the difference between the current system temperature and the preset temperature to obtain a temperature difference value. Then, it can use this temperature difference value to adjust the current speed of the water pump to obtain a target speed lower than the current speed. Finally, it can use this target speed to adjust the water pump control strategy to obtain the first control strategy described above. A pre-built feedback control controller, such as a proportional-integral-derivative controller, can be used to adjust the current speed based on the temperature difference value to obtain the target speed. Alternatively, the control system can obtain a speed matching the temperature difference from a preset temperature-speed table as the target speed. It should be noted that the above method of determining the target speed is only an example and is not limited here.

[0050] Furthermore, the expansion kettle includes at least: a degassing pipe; and a second control strategy is obtained by adjusting the kettle control strategy based on the noise level, including: obtaining the difference between the noise level and a preset level to obtain a decibel difference; adjusting the current flow rate of the degassing pipe based on the decibel difference to obtain a target flow rate, wherein the target flow rate is less than the current flow rate; and adjusting the kettle control strategy based on the target flow rate to obtain the second control strategy.

[0051] In one optional embodiment, the expansion tank may include at least a degassing pipe. When adjusting the tank control strategy, the control system can first obtain the difference between the current noise level of the expansion tank and a preset decibel level to obtain the aforementioned decibel difference. Then, the current flow rate of the degassing pipe in the expansion tank is adjusted using the decibel difference to obtain a target flow rate lower than the current flow rate. Finally, the target flow rate is used to adjust the tank control strategy to obtain the aforementioned second control strategy. The target flow rate can be determined in the same way as the target rotational speed, either through a proportional-integral-derivative controller or by looking up a table; the specific method is not limited. Correspondingly, the flow rate of the degassing pipe can be changed by adjusting the opening of the control valve in the expansion tank; the larger the opening of the control valve, the larger the flow rate of the degassing pipe.

[0052] Furthermore, the above method also includes: obtaining a user profile of at least one user on the vehicle, and a vehicle identifier; obtaining at least one impact decibel based on the user profile, and obtaining the vehicle's calibration decibel based on the vehicle identifier, wherein the impact decibel is used to characterize the decibel level at which the noise decibel determined by the user will affect the user, and the calibration decibel is used to characterize the decibel level at which the noise decibel obtained through statistical calibration will affect the user; weighting the impact decibel to obtain a weighted decibel; and adjusting the calibration decibel based on the weighted decibel to obtain a preset decibel.

[0053] In one optional embodiment, to ensure the reasonableness of the determined preset decibel level and avoid situations where users are disturbed by noise levels below the preset decibel level, the control system can first acquire a user profile of at least one user in the vehicle upon vehicle startup, and simultaneously acquire the vehicle identification number. Then, based on the user profiles, it determines the degree of noise impact on different users, thereby determining the distribution of noise that will affect users, i.e., determining the aforementioned impact decibel level. This impact decibel level can also be determined by the user themselves using a preset noise experience device; this is not limited here. Simultaneously with acquiring the impact decibel level, the control system can also acquire a calibration decibel level obtained by statistically analyzing the impact decibel levels reported by different users in vehicles of that type, based on the vehicle identification number. Then, the control system can first weight the impact decibel levels of different users to obtain a decibel level that will not significantly affect the users in the vehicle, i.e., obtain the aforementioned weighted decibel level. Then, it uses this weighted decibel level to adjust the calibration decibel level, for example, by taking the average of the two, or by directly replacing the calibration decibel level with the weighted decibel level, to determine the aforementioned preset decibel level.

[0054] Furthermore, after controlling the operation of the cooling system based on the target control strategy, the above method further includes: monitoring the noise of the expansion tank to obtain the monitored decibel level; determining the exhaust state of the expansion tank based on the noise decibel level and the monitored decibel level, wherein the exhaust state is used to characterize whether the exhaust efficiency of the expansion tank is less than or equal to a preset efficiency threshold; in response to the exhaust efficiency being less than or equal to the preset efficiency threshold, adjusting the tank control strategy in the target control strategy according to a preset flow rate to obtain a third control strategy, wherein the preset flow rate is used to characterize the minimum flow rate of the degassing pipe; and controlling the expansion tank to exhaust gas based on the third control strategy.

[0055] In one optional embodiment, considering that the gas in the expansion tank is removed through the degassing pipe to maintain the stability of the cooling system pressure and temperature, once the system pressure and temperature are stable, venting can be stopped. During the venting process through the degassing pipe, as the amount of gas in the expansion tank decreases, the noise level of the expansion tank also gradually decreases. Therefore, the change in the noise level in the expansion tank can be used to determine whether to continue venting the gas at a higher flow rate. Correspondingly, after controlling the cooling system according to the target control strategy, the control system can further monitor the expansion tank to obtain the aforementioned monitoring decibel level. Then, based on the relationship between the initial noise level of the expansion tank and the aforementioned monitoring decibel level, such as the ratio between the noise level and the monitoring decibel level, a determination can be made. The current venting status of the expansion tank is determined by whether its venting efficiency is less than or equal to a preset efficiency threshold. If it is less than or equal to the preset efficiency threshold, it indicates that the current pressure and temperature of the cooling system are stabilizing. Consequently, the expansion tank does not need to vent gas through the degassing pipe at a large flow rate. In this case, the control system can adjust the tank control strategy in the target control strategy according to a preset flow rate, such as the minimum flow rate of the degassing pipe, to obtain the aforementioned third control strategy. Then, the expansion tank is vented according to the third control strategy to avoid pressure imbalance and instability in the cooling system. If the venting efficiency is less than or greater than the preset efficiency threshold, it can be considered that there is still a lot of gas in the expansion tank. In this case, the control system can continue to vent the gas in the expansion tank through the degassing pipe according to the flow rate in the target control strategy.

[0056] Furthermore, the exhaust state of the expansion kettle is determined based on the noise decibels and the monitored decibels, including: constructing a noise change curve of the expansion kettle based on the noise decibels and the monitored decibels; determining the noise change rate of the expansion kettle based on the noise change curve; determining the exhaust state as exhaust efficiency greater than a preset efficiency threshold in response to the noise change rate being greater than a preset change rate threshold; and determining the exhaust state as exhaust efficiency less than or equal to a preset efficiency threshold in response to the noise change rate being less than or equal to the preset change rate threshold.

[0057] In one optional embodiment, in order to ensure the rationality of the determined exhaust state, the control system can first construct the noise change curve of the expansion kettle based on the noise decibels and the aforementioned monitored decibels, and then determine the noise change rate corresponding to the noise change curve. If the noise change rate is greater than a preset change rate threshold, the exhaust state can be determined to be that the exhaust efficiency is greater than a preset efficiency threshold; if the noise change rate is less than or equal to the preset change rate threshold, the exhaust state can be determined to be that the exhaust efficiency is less than or equal to the preset efficiency threshold.

[0058] Furthermore, the expansion tank includes: a guide pipe, on which multiple evenly distributed guide grooves are provided, the guide grooves being located below the liquid surface of the coolant in the expansion tank.

[0059] In one optional embodiment, the expansion tank may include at least a guide pipe, on which multiple evenly distributed guide grooves may be provided. These guide grooves are located below the surface of the coolant in the expansion tank. For ease of understanding, Figure 2 This is a schematic diagram of a vertical cross-section of an expansion tank according to an embodiment of this application. The black horizontal line 200 represents the lowest liquid level in the expansion tank, and the lowest position of the corresponding guide pipe is above this lowest liquid level. The dashed rectangle 201 represents multiple grooves set on the guide pipe, which can serve as guide channels. Figure 3 This is a schematic diagram of a degassing pipe for an expansion tank according to an embodiment of this application, as shown below. Figure 3 As shown, the degassing pipe 300 on the expansion tank is typically deployed at the top of the expansion tank and can be used to remove gas from the expansion tank.

[0060] Through the above Figure 2 and Figure 3 As can be seen, the guide pipe connected to the degassing pipe on the expansion tank can be extended directly below the lowest coolant level inside the expansion tank. This ensures that the gas in the coolant can be released more smoothly and merge into the liquid phase when it enters the degassing pipe, thereby effectively reducing the noise generated by the rapid rise and collapse of bubbles on the liquid surface, significantly improving the quietness of the cooling system. Furthermore, since the guide pipe is equipped with multiple openings, i.e., guide channels, the bubbles in the coolant can naturally collapse when they flow to the boundary of the guide channel during the flow process. Moreover, when the coolant flows down the guide pipe, it will not generate large bubbles due to the diversion of the flow on the guide plates between different guide channels, which greatly improves the noise of water flow.

[0061] Furthermore, by configuring multiple evenly distributed guide grooves on each guide pipe, the pressure balance can be maintained when each degassing pipe operates independently, while preventing coolant backflow when one degassing pipe is working while the other is not. This ensures the orderly flow of coolant in its respective circulation, avoiding unnecessary cross-interference and potential safety hazards.

[0062] Figure 4 This is a schematic diagram illustrating a cooling system control process according to an embodiment of this application, such as... Figure 4As shown, during vehicle operation, the control system first determines whether the vehicle is currently in a low-speed or idling condition. If the vehicle speed is greater than a preset speed, such as 40 km / h, it can be determined that the vehicle is not in this driving condition, and the control system can control the cooling system normally according to the system control strategy. If the vehicle speed is less than or equal to the preset speed, such as 40 km / h, it can be determined that the vehicle is in this driving condition. At this time, because the vehicle speed is low, the tire noise, wind noise, and other noises generated during vehicle operation may not be able to cover the sound of water flowing in the expansion tank. To avoid affecting the user's driving experience, the control system... The system can acquire real-time data on system temperature and expansion tank noise levels. Based on the system temperature, it constructs new water pump control strategies, and based on the noise levels, it constructs new tank control strategies. These new water pump control strategies and tank control strategies are then used to control the cooling system operation. For example, when the system temperature is low, such as less than or equal to a preset temperature, it can be assumed that a strong cooling effect is not needed. The corresponding control system can adjust the water pump control strategy to reduce the water pump flow, thereby reducing cooling costs. If the system temperature is higher than the preset temperature, the water pump operation can continue according to the existing water pump control strategy. Simultaneously, if the noise level is less than or equal to a preset level, it indicates that the noise from the expansion tank will not affect the users in the vehicle. The expansion tank can continue to be controlled according to the existing tank control strategy. If the noise level is higher than the preset level, it indicates that the noise from the expansion tank may affect the users. In this case, the tank control strategy can be adjusted, for example, by reducing the control valve opening to reduce the flow rate in the degassing pipe, thereby reducing the noise level from the expansion tank. After controlling the operation of the expansion tank and cooling system, the control system can further monitor the changes in the noise level of the expansion tank and construct a corresponding change curve. Then, based on the rate of change of the change curve, it can determine whether the air pressure is stable. If it is unstable, it can continue to control the expansion tank to exhaust air at the current flow rate. If it is stable, it can control the flow rate of the degassing pipe to the minimum flow rate, for example, by adjusting the opening of the control valve to the minimum opening, in order to save energy, reduce emissions, and lower costs.

[0063] According to an embodiment of the present invention, an embodiment of a device for controlling a vehicle cooling system is provided. It should be noted that the device can be used to execute the above-described method for controlling a vehicle cooling system. Figure 5 This is a structural block diagram of a control device for a vehicle cooling system according to an embodiment of this application, such as... Figure 5 The device may include: a first acquisition module 502, a strategy adjustment module 504, and a system control module 506.

[0064] The first acquisition module 502 is used to acquire the system temperature of the cooling system and the noise level of the expansion tank in decibels in response to detecting that the vehicle is in a first driving condition. The cooling system includes an expansion tank. The strategy adjustment module 504 is used to adjust the system control strategy based on the system temperature and / or noise level to obtain a target control strategy. The system control strategy is used to characterize the control strategy of the cooling system when the vehicle is driving in a second driving condition, where the vehicle speed in the second driving condition is greater than the vehicle speed in the first driving condition. The system control module 506 is used to control the operation of the cooling system based on the target control strategy.

[0065] Furthermore, the cooling system also includes a water pump, and the system control strategy includes at least a water pump control strategy and a kettle control strategy. The strategy adjustment module includes a first adjustment unit, used to adjust the water pump control strategy based on the system temperature in response to the system temperature being lower than a preset temperature, to obtain a first control strategy; and a second adjustment unit, used to adjust the kettle control strategy based on the noise level in response to the noise level being higher than a preset decibel, to obtain a second control strategy.

[0066] Furthermore, the first adjustment unit is also used to: obtain the difference between the system temperature and the preset temperature to obtain a temperature difference value; adjust the current speed of the water pump based on the temperature difference value to obtain a target speed, wherein the target speed is less than the current speed; and adjust the water pump control strategy based on the target speed to obtain a first control strategy.

[0067] Furthermore, the expansion kettle includes at least a degassing pipe, and the second adjustment unit is also used to: obtain the difference between the noise level and the preset degassing level to obtain the degassing difference; adjust the current flow rate of the degassing pipe based on the degassing difference to obtain the target flow rate, wherein the target flow rate is less than the current flow rate; and adjust the kettle control strategy based on the target flow rate to obtain the second control strategy.

[0068] Furthermore, the aforementioned device further includes: a second acquisition module, used to acquire a user profile of at least one user on the vehicle, and a vehicle identifier; a decibel acquisition module, used to acquire at least one impact decibel based on the user profile, and to acquire the vehicle's calibration decibel based on the vehicle identifier, wherein the impact decibel is used to characterize the decibel level at which a noise decibel determined by the user will affect the user, and the calibration decibel is used to characterize the decibel level at which a noise decibel obtained through statistical calibration will affect the user; a decibel weighting module, used to weight the impact decibel to obtain a weighted decibel; and a decibel adjustment module, used to adjust the calibration decibel based on the weighted decibel to obtain a preset decibel.

[0069] Furthermore, the aforementioned device also includes: a decibel monitoring module for monitoring the noise of the expansion kettle to obtain the monitored decibel level; a state determination module for determining the venting state of the expansion kettle based on the noise decibel level and the monitored decibel level, wherein the venting state characterizes whether the venting efficiency of the expansion kettle is less than or equal to a preset efficiency threshold; a first adjustment module for adjusting the kettle control strategy in the target control strategy according to a preset flow rate in response to the venting efficiency being less than or equal to the preset efficiency threshold, to obtain a third control strategy, wherein the preset flow rate characterizes the minimum flow rate of the degassing pipe; and a kettle venting module for controlling the expansion kettle to vent based on the third control strategy.

[0070] Furthermore, the state determination module includes: a curve construction unit for constructing a noise change curve of the expansion kettle based on noise decibels and monitored decibels; a change rate determination unit for determining the noise change rate of the expansion kettle based on the noise change curve; a first determination unit for determining the exhaust state as exhaust efficiency greater than a preset efficiency threshold in response to a noise change rate greater than a preset change rate threshold; and a second determination unit for determining the exhaust state as exhaust efficiency less than or equal to a preset efficiency threshold in response to a noise change rate less than or equal to a preset change rate threshold.

[0071] Furthermore, the expansion tank includes: a guide pipe, on which multiple evenly distributed guide grooves are provided, the guide grooves being located below the liquid surface of the coolant in the expansion tank.

[0072] Example 3

[0073] Embodiments of this application also provide a vehicle, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention during runtime.

[0074] Example 4

[0075] Embodiments of this application also provide a computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0076] Example 5

[0077] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0078] Example 6

[0079] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program that, when executed by a processor, implements the methods in various embodiments of the present invention.

[0080] Example 7

[0081] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of the present invention.

[0082] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0083] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection of units or modules may be electrical or other forms.

[0084] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0085] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0086] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0087] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for a vehicle cooling system, characterized in that, include: In response to detecting that the vehicle is in a first driving condition, the system temperature of the cooling system and the noise level of the expansion tank are acquired, wherein the cooling system includes the expansion tank; The system control strategy is adjusted based on the system temperature and / or the noise decibels to obtain a target control strategy. The system control strategy is used to characterize the control strategy of the cooling system when the vehicle is driving under the second driving condition, and the driving speed of the vehicle under the second driving condition is greater than the driving speed of the vehicle under the first driving condition. The cooling system is controlled based on the target control strategy. After controlling the cooling system to operate based on the target control strategy, the method further includes: monitoring the noise of the expansion tank to obtain a monitoring decibel level; determining the exhaust state of the expansion tank based on the noise decibel level and the monitoring decibel level, wherein the exhaust state is used to characterize whether the exhaust efficiency of the expansion tank is less than or equal to a preset efficiency threshold; in response to the exhaust efficiency being less than or equal to the preset efficiency threshold, adjusting the tank control strategy in the target control strategy according to a preset flow rate to obtain a third control strategy, wherein the preset flow rate is used to characterize the minimum flow rate of the degassing pipe; and controlling the expansion tank to exhaust gas based on the third control strategy.

2. The method according to claim 1, characterized in that, The cooling system further includes a water pump, and the system control strategy includes at least a water pump control strategy and a kettle control strategy, adjusting the system control strategy based on the system temperature and / or the noise level, including: In response to the system temperature being lower than a preset temperature, the water pump control strategy is adjusted based on the system temperature to obtain a first control strategy; In response to the noise level being greater than a preset decibel, the kettle control strategy is adjusted based on the noise level to obtain a second control strategy.

3. The method according to claim 2, characterized in that, The water pump control strategy is adjusted based on the system temperature to obtain a first control strategy, including: The difference between the system temperature and the preset temperature is obtained to get the temperature difference value; The current speed of the water pump is adjusted based on the temperature difference to obtain a target speed, wherein the target speed is less than the current speed; The water pump control strategy is adjusted based on the target rotational speed to obtain the first control strategy.

4. The method according to claim 2, characterized in that, The expansion kettle includes at least: a degassing pipe; and a second control strategy is obtained by adjusting the kettle control strategy based on the noise level, including: The difference between the noise level in decibels and the preset decibel level is obtained to get the decibel difference. The current flow rate of the degassing pipe is adjusted based on the decibel difference to obtain a target flow rate, wherein the target flow rate is less than the current flow rate; The kettle control strategy is adjusted based on the target flow rate to obtain the second control strategy.

5. The method according to claim 2, characterized in that, The method further includes: Obtain the user profile of at least one user on the vehicle, and the vehicle identifier of the vehicle; At least one impact decibel is obtained based on the user profile, and the calibration decibel of the vehicle is obtained based on the vehicle identifier. The impact decibel is used to characterize the decibel level at which the noise decibel determined by the user will affect the user, and the calibration decibel is used to characterize the decibel level at which the noise decibel obtained through statistical calibration will affect the user. The aforementioned decibel influence is weighted to obtain a weighted decibel; The preset decibel is obtained by adjusting the calibrated decibel based on the weighted decibel.

6. The method according to claim 1, characterized in that, Determining the venting status of the expansion kettle based on the noise level and the monitored decibel level includes: Based on the noise decibels and the monitored decibels, a noise variation curve for the expansion kettle is constructed; The noise change rate of the expansion kettle is determined based on the noise change curve. In response to the noise change rate being greater than a preset change rate threshold, the exhaust state is determined to be that the exhaust efficiency is greater than the preset efficiency threshold. In response to the noise change rate being less than or equal to the preset change rate threshold, the exhaust state is determined to be that the exhaust efficiency is less than or equal to the preset efficiency threshold.

7. The method according to claim 1, characterized in that, The expansion tank includes a guide pipe with multiple evenly distributed guide grooves on it, the guide grooves being located below the surface of the coolant in the expansion tank.

8. A control device for a vehicle cooling system, characterized in that, include: The first acquisition module is used to acquire the system temperature of the cooling system and the noise level of the expansion tank in decibels in response to detecting that the vehicle is in a first driving condition, wherein the cooling system includes the expansion tank; The strategy adjustment module is used to adjust the system control strategy based on the system temperature and / or the noise decibels to obtain a target control strategy. The system control strategy is used to characterize the control strategy of the cooling system when the vehicle is driving under the second driving condition, and the driving speed of the vehicle under the second driving condition is greater than the driving speed of the vehicle under the first driving condition. The system control module is used to control the operation of the cooling system based on the target control strategy; The system control module is further configured to monitor the noise level of the expansion kettle to obtain the monitored decibel level; determine the venting state of the expansion kettle based on the noise level and the monitored decibel level, wherein the venting state is used to characterize whether the venting efficiency of the expansion kettle is less than or equal to a preset efficiency threshold; in response to the venting efficiency being less than or equal to the preset efficiency threshold, adjust the kettle control strategy in the target control strategy according to a preset flow rate to obtain a third control strategy, wherein the preset flow rate is used to characterize the minimum flow rate of the degassing pipe; and control the expansion kettle to vent based on the third control strategy.

9. A vehicle, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the method according to any one of claims 1 to 7.

11. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 7.

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