Control method of heat dissipation system of vehicle, heat dissipation system of vehicle and vehicle

Abstract

The invention provides a control method of a heat dissipation system of a vehicle, the heat dissipation system of the vehicle and the vehicle, and the heat dissipation system comprises a heat dissipation device which is used for carrying out circulating heat dissipation on a target part through cooling liquid; the plurality of cooling fans are used for cooling the radiator; the radiator is provided with a first temperature sensor, a second temperature sensor and a third temperature sensor, and the first temperature sensor is used for detecting the ambient temperature around the radiator; the second temperature sensor is used for detecting the temperature of the cooling liquid in the radiator after circulating heat dissipation; the third temperature sensor is used for detecting the target temperature of the cooling liquid in the radiator after circulating heat dissipation; and the controller is used for controlling the plurality of cooling fans to start working according to a preset sequence according to the environment temperature, the cooling liquid temperature and the target temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and in particular to a control method of a heat dissipation system of a vehicle, a heat dissipation system of a vehicle and a vehicle. Background Art

[0002] As the power of fuel cell stacks continues to increase, the heat dissipation requirements of vehicles are increasing. Since the maximum operating temperature of fuel cell stacks needs to be much lower than that of traditional engines, it is necessary to design an independent and more sophisticated heat dissipation system to meet the cooling needs of vehicles. However, the current cooling system and control strategy cannot accurately match these cooling requirements, further exacerbating the energy consumption problem of the cooling system. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the first purpose of the present invention is to propose a control method for a vehicle's cooling system, which maximizes the performance of the vehicle's cooling system through a sophisticated control strategy, effectively reduces the energy consumption of the cooling system, and improves the stability and endurance of the vehicle's operation.

[0005] A control method for a cooling system of a vehicle, the cooling system of the vehicle comprising a radiator, a cooling fan, a first temperature sensor, and a second temperature sensor, the radiator being used to circulate and dissipate heat for a target component, the cooling fan being a plurality of fans and being used to dissipate heat for the radiator, the first temperature sensor being used to detect an ambient temperature around the radiator, and the second temperature sensor being used to detect a coolant temperature in the cooling liquid inside the radiator during the circulating heat dissipation, the method comprising:

[0006] Acquiring an operating temperature of a target component, determining whether the operating temperature exceeds a preset operating temperature threshold, and in response to the operating temperature exceeding the preset operating temperature threshold, starting a radiator water pump;

[0007] Get the ambient temperature and coolant temperature;

[0008] For several cooling fans, the difference between the coolant temperature and the ambient temperature is calculated to obtain several liquid-air temperature difference values;

[0009] Sorting the plurality of liquid-air temperature difference values ​​in descending order to obtain a preset order for the plurality of cooling fans;

[0010] Control several cooling fans to start working in a preset order.

[0011] According to a control method of a vehicle cooling system provided by an embodiment of the present invention, the operating temperature of a target component is first obtained, and it is confirmed whether the operating temperature exceeds a preset operating temperature threshold. In response to the operating temperature exceeding the preset operating temperature threshold, the radiator water pump is turned on; further, the ambient temperature and the coolant temperature are obtained; for a number of cooling fans, the difference between the coolant temperature and the ambient temperature is calculated to obtain a number of liquid-air temperature differences; the number of liquid-air temperature differences are sorted in descending order to obtain a preset sequence for a number of cooling fans; and a number of cooling fans are controlled to start working in a preset sequence. The present invention can improve the overall performance of the cooling system by analyzing, optimizing and improving the characteristics of the cooling system itself, and utilizing the close cooperation and efficient collaborative work between the radiator, the cooling fan, the temperature sensor and the controller. At the same time, in view of the uneven temperature that may exist on the surface of the radiator, the cooling fan in the cooling system is precisely controlled. This refined control not only helps to reduce the energy consumed by the cooling system, but also significantly improves the vehicle's endurance, bringing a more economical and environmentally friendly driving experience to the driver.

[0012] In addition, the control method of the cooling system of a vehicle according to the above embodiment of the present invention may also have the following additional technical features:

[0013] According to some embodiments of the present invention, the cooling system of the vehicle further includes a third temperature sensor, and the third temperature sensor is used to detect a target temperature of the coolant inside the radiator after circulating and cooling. Before obtaining the ambient temperature and the coolant temperature, the method further includes:

[0014] Get the target temperature;

[0015] Confirm whether the target temperature is greater than the preset target temperature threshold;

[0016] In response to the target temperature being greater than a preset target temperature threshold, obtaining the ambient temperature and the coolant temperature is confirmed.

[0017] According to some embodiments of the present invention, controlling a plurality of cooling fans to start working in a preset sequence includes:

[0018] In response to turning on any one of the cooling fans, confirming whether the target temperature is not greater than a preset target temperature threshold;

[0019] In response to the target temperature being greater than a preset target temperature threshold, a next cooling fan adjacent to the cooling fan in the preset sequence is turned on in a preset sequence.

[0020] According to some embodiments of the present invention, the method further comprises:

[0021] In response to turning on any one of the cooling fans, a preset temperature difference range corresponding to the liquid-air temperature difference value corresponding to the cooling fan is determined, and a fan duty cycle of the cooling fan is controlled according to the preset temperature difference range.

[0022] The second object of the present invention is to provide a vehicle cooling system, which optimizes the performance of the cooling system, effectively reduces the energy consumption of the cooling system, and improves the stability and endurance of the vehicle operation.

[0023] A cooling system for a vehicle, comprising:

[0024] A radiator, used for circulating coolant to dissipate heat to the target component;

[0025] A plurality of cooling fans for cooling the radiator;

[0026] The radiator is provided with a first temperature sensor, a second temperature sensor and a third temperature sensor. The first temperature sensor is used to detect the ambient temperature around the radiator; the second temperature sensor is used to detect the temperature of the coolant in the radiator during the circulation heat dissipation; the third temperature sensor is used to detect the target temperature of the coolant in the radiator after the circulation heat dissipation;

[0027] The controller is used to control a plurality of cooling fans to start working in a preset sequence according to the ambient temperature, the coolant temperature and the target temperature.

[0028] In addition, the cooling system of the vehicle according to the above embodiment of the present invention may also have the following additional technical features:

[0029] According to some embodiments of the present invention, the radiator is provided with a coolant inlet and a coolant outlet, the coolant inlet is used to input coolant into the radiator, and the coolant outlet is used to discharge the coolant after circulating heat dissipation; the third temperature sensor is arranged at the coolant outlet.

[0030] According to some embodiments of the present invention, the cooling system of the vehicle further comprises a fixing bracket;

[0031] When the cooling fan is a suction cooling fan, the fixing bracket is arranged on the side of the radiator away from the cooling fan;

[0032] When the heat dissipation fan is a blowing type heat dissipation fan, the fixing bracket is arranged between the radiator and the heat dissipation fan.

[0033] According to some embodiments of the present invention, at least one first temperature sensor is disposed on the fixing bracket at a position corresponding to the cooling fan; at least one second temperature sensor is disposed on the radiator; and the second temperature sensor corresponds to the first temperature sensor.

[0034] According to some embodiments of the present invention, the second temperature sensor is disposed between adjacent heat dissipation fins of the heat sink.

[0035] According to some embodiments of the present invention, the fixed bracket includes a first fixed rod and a second fixed rod, the two ends of the first fixed rod are arranged on the frame of the radiator, the second fixed rod has a first end and a second end, the first end is movably arranged on the first fixed rod, the second end is inserted between adjacent cooling fins of the radiator, and the second temperature sensor is arranged at the second end of the second fixed rod.

[0036] According to some embodiments of the present invention, the first temperature sensor is disposed on the first fixing rod, the first fixing rod is provided with a slide rail, and the first temperature sensor is provided with a pulley, so that the position of the first temperature sensor on the first fixing rod is adjustable.

[0037] According to some embodiments of the present invention, there are multiple fixed brackets, and at least two support rods for supporting the two adjacent fixed brackets are cross-arranged between the two adjacent fixed brackets. The at least two support rods can rotate around the intersection as the center to adjust the angle between the at least two support rods.

[0038] According to an embodiment of the present invention, a cooling system for a vehicle is provided, which mainly includes a radiator for circulating cooling of a target component through a coolant; a plurality of cooling fans for cooling the radiator; the radiator is provided with a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor is used to detect the ambient temperature around the radiator; the second temperature sensor is used to detect the coolant temperature of the coolant in the radiator during circulating cooling; the third temperature sensor is used to detect the target temperature of the coolant in the radiator after circulating cooling; and a controller is used to control a plurality of cooling fans to start working in a preset order according to the ambient temperature, the coolant temperature and the target temperature. The present invention can improve the overall performance of the cooling system by analyzing, optimizing and improving the characteristics of the cooling system itself, and utilizing the close cooperation and efficient cooperation between the radiator, the cooling fan, the temperature sensor and the controller. At the same time, in view of the uneven temperature that may exist on the surface of the radiator, the cooling fan in the cooling system is precisely controlled. This refined control not only helps to reduce the energy consumed by the cooling system, but also significantly improves the endurance of the vehicle, bringing a more economical and environmentally friendly driving experience to the driver.

[0039] A third object of the present invention is to provide a vehicle, comprising the cooling system of the vehicle described above, wherein the cooling system of the vehicle is used to execute the control method of the cooling system of the vehicle described above.

[0040] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A front view of the heat dissipation system structure provided by an embodiment of the present invention.

[0043] Figure 2 A side view of the heat dissipation system structure provided by an embodiment of the present invention.

[0044] Figure 3 A rear view of the heat dissipation system structure provided by an embodiment of the present invention.

[0045] Figure 4 A schematic diagram of a fixing bracket provided in an embodiment of the present invention.

[0046] Figure 5 A schematic diagram of the working principle of a controller of a heat dissipation system provided in an embodiment of the present invention.

[0047] Figure 6 A flow chart of a control method for a cooling system of a vehicle provided in an embodiment of the present invention.

[0048] Figure 7 A schematic diagram of the overall control flow of a cooling system for a vehicle provided in an embodiment of the present invention.

[0049] Figure 8 A single fan control flow chart provided by an embodiment of the present invention.

[0050] Figure markings: 1-radiator, 2-cooling fan, 3-coolant inlet, 4-coolant outlet, 5-first temperature sensor, 6-second temperature sensor, 7-third temperature sensor, 8-fan fixing cover, 9-fixing bracket, 10-cooling fin, 11-support rod, 901-first fixing rod, 902-second fixing rod. DETAILED DESCRIPTION

[0051] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0052] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] As shown in the background technology section, with the needs of industrial development, the power of fuel cell stacks is getting higher and higher. Especially for commercial vehicles, the large amount of heat generated during operation requires support from a higher standard cooling system. In order to ensure the heat dissipation capacity of the cooling system, the existing technology mostly uses high-power radiators, matching multiple sets of cooling fans or using high-pressure fans to improve the heat dissipation effect, but its cooling system is still based on the cooling method of traditional vehicles, and the cooling system itself has not been improved and optimized. The energy consumption of the cooling system is relatively high, which affects the economy of commercial vehicles.

[0054] In the process of realizing the present invention, the applicant found that since the cooling system of commercial vehicles requires a more powerful cooling function, there are more and more cooling accessories for the cooling system, such as the stack accessories, electric drive axles, domain control and other electronic control systems, which all need heat dissipation to ensure that each component is at the optimal working temperature. However, these cooling accessories have higher requirements for heat dissipation, that is, the operating temperature of each accessory is lower than the operating temperature of the fuel cell stack, which poses a great challenge to the precise control of the cooling system.

[0055] The technical solution of the present invention is further described in detail below through specific embodiments.

[0056] refer to Figure 1 , Figure 2 as well as Figure 3 , Figure 1 A front view of the heat dissipation system structure provided by an embodiment of the present invention, Figure 2 A side view of the heat dissipation system structure provided by an embodiment of the present invention, Figure 3 A rear view of the heat dissipation system structure provided by an embodiment of the present invention.

[0057] In an embodiment of the present invention, the heat dissipation system structure includes a radiator 1, a heat dissipation fan 2, a coolant inlet 3, a coolant outlet 4, a first temperature sensor 5, a second temperature sensor 6, a third temperature sensor 7, a fan fixing cover 8, a fixing bracket 9, heat dissipation fins 10, and a support rod 11.

[0058] Among them, a plurality of cooling fans 2 are arranged toward the radiator 1, and the coolant inlet 3 and the coolant outlet 4 are respectively arranged at one end and the other end of the same side of the radiator 1. When the cooling fan 2 is a suction cooling fan 2, the fixing bracket 9 is arranged on the side of the radiator 1 away from the cooling fan 2; when the cooling fan 2 is a blowing cooling fan 2, the fixing bracket 9 is arranged between the radiator 1 and the cooling fan 2. At least one first temperature sensor 5 is arranged on the fixing bracket 9 and at a position corresponding to the cooling fan 2; at least one second temperature sensor 6 is arranged on the radiator 1; the second temperature sensor 6 corresponds to the first temperature sensor 5. The second temperature sensor 6 is arranged between adjacent cooling fins of the radiator 1. The third temperature sensor 7 is arranged at the cooling liquid outlet 4.

[0059] As an optional embodiment, the heat dissipation system may include only at least one third temperature sensor 7, and may include at least one or more first temperature sensors 5 and second temperature sensors 6, and the first temperature sensors 5, the second temperature sensors 6 and the heat dissipation fans 2 may be arranged in a one-to-one correspondence. Alternatively, the projections of each heat dissipation fan 2 on the surface of the radiator 1 may be used as divided areas, and each divided area may include multiple first temperature sensors 5 and second temperature sensors 6, and the projections of the first temperature sensors 5 and the second temperature sensors 6 on the surface of the radiator 1 all fall within the same divided area.

[0060] As an optional embodiment, the radiator 1 is used to circulate the coolant to dissipate heat to the target component; the cooling fan 2 is used to dissipate heat to the radiator 1; the first temperature sensor 5 is used to detect the ambient temperature around the radiator 1; the second temperature sensor 6 is used to detect the coolant temperature of the coolant inside the radiator 1 during the circulating heat dissipation; the third temperature sensor 7 is used to detect the target temperature of the coolant inside the radiator 1 after the circulating heat dissipation.

[0061] The heat dissipation system also includes a controller, which is used to control a plurality of heat dissipation fans to start working in a preset sequence according to the ambient temperature, the coolant temperature and the target temperature.

[0062] In the embodiment of the present invention, the radiator 1 is used to dissipate heat from the target component through the coolant. As the core component of the heat dissipation system, the radiator 1 can quickly dissipate heat through the carefully designed heat dissipation fins 10 and the efficient heat dissipation material, so as to ensure that the temperature of the target component is stable below the set working temperature threshold; a plurality of heat dissipation fans 2 are arranged toward the radiator 1, so as to provide flowing air to the radiator 1 for dissipating the heat. The heat dissipation fan 2 is an indispensable role in the heat dissipation system. The fan generates airflow through the rotation of the fan blades, accelerates the air flow, and sucks out or blows away the hot air on the surface of the radiator 1, thereby effectively taking away the heat on the radiator 1, so that the heat dissipation effect of the heat dissipation system is better and the heat dissipation efficiency is higher; the coolant inlet 3 and the coolant outlet 4 are the starting and ending ends of the coolant circulation in the heat dissipation system, and are indispensable components of the heat dissipation system. They play a vital role in many aspects such as coolant circulation, heat transfer and dissipation, temperature control, and system efficiency. During the circulation process, the coolant flows through the target component, brings the absorbed heat of the target component to the radiator 1, and then dissipates the heat through the radiator 1, effectively controlling the working temperature of the target component, preventing the occurrence of overheating, and maintaining the normal operation of the target component.

[0063] refer to Figure 2 The second temperature sensor 6 is embedded in the heat dissipation fin 10 of the radiator 1 and is arranged close to the water pipe belt of the radiator. Due to the strong thermal conductivity of the water pipe belt and the heat dissipation fin 10 of the radiator 1, the temperature detected by the second temperature sensor 6 can be regarded as the coolant temperature in the water pipe belt of the radiator 1.

[0064] Specifically, the second temperature sensor 6 is embedded in the heat dissipation fin 10 of the radiator 1 and is set close to the water pipe belt of the radiator 1, so that the second temperature sensor 6 does not occupy additional space and is in full contact with the coolant water pipe belt of the radiator 1. At this time, the second temperature sensor 6 can more accurately detect the coolant surface temperature corresponding to the area of ​​the heat dissipation fan 2. By embedding the second temperature sensor 6, more accurate and reliable temperature data can be provided, providing strong support for the correct operation of the controller.

[0065] refer to Figure 3 The heat dissipation system also includes a fixed bracket 9, both ends of which are respectively arranged on the frame of the radiator 1. There can be multiple fixed brackets 9, and at least two support rods 11 for supporting the two adjacent fixed brackets are cross-arranged between two adjacent fixed brackets 9. The at least two support rods 11 can rotate around the intersection point to adjust the angle between the at least two support rods 11, thereby adjusting the relative distance between the two fixed brackets 9, that is, further adjusting the relative position of the first temperature sensor 6 relative to the radiator 1 in the vertical direction.

[0066] Specifically, the fixing method of the fixing bracket 9 and the radiator 1 can be a snap-on fixation, in which the fixing bracket 9 is inserted into a slot or a hook to fix the two components together, and can usually be quickly connected and removed; the fixing method of the fixing bracket 9 and the radiator 1 can also be bolted fixation, using screws and nuts to make the two fit tightly by rotating the screws, with good fixation, and convenient removal and installation; the fixing method of the fixing bracket 9 and the radiator 1 can also be welding fixation, which has better firmness and shock resistance. This connection will not loosen due to heavy loads, vibrations or temperature changes, effectively enhancing the structural strength and stability of the fixing bracket 9; the fixing bracket 9 can also improve the overall strength of the radiator 1, thereby avoiding cracking, deformation and other faults of the radiator 1 during use, further extending the service life of the radiator 1, and improving the reliability and durability of the entire cooling system.

[0067] Specifically, the first temperature sensor 5 can be embedded in the fixed bracket 9, which can effectively wrap the sensor to protect the sensor, and at the same time, the first temperature sensor 5 can be better placed in the fixed bracket 9 to ensure that the first temperature sensor 5 can accurately detect the temperature value; the first temperature sensor 5 can also be welded on the fixed bracket 9, and welding can firmly fix the first temperature sensor 5 on the fixed bracket 9 to prevent it from falling off due to temperature changes or vibrations, thereby effectively enhancing the stability of the first temperature sensor 5; the first temperature sensor 5 can also be set on the fixed bracket 9 by a pulley device, and move on the fixed bracket 9 through pulleys and slide rails. The position of the first temperature sensor 5 can be changed according to the actual needs of different operations, thereby achieving more accurate temperature detection.

[0068] In the embodiment of the present invention, when the cooling fan 2 is a suction cooling fan, the fixing bracket 9 is arranged on the side of the radiator 1 away from the cooling fan 2 (such as Figure 2 As shown). Because when the cooling fan 2 is a suction type cooling fan, the setting of the fixed bracket 9 does need to take into account the suction characteristics of the fan. In this case, the fixed bracket 9 should be reasonably designed and installed on the side of the radiator 1 away from the cooling fan 2. The suction type cooling fan sucks in the hot air of the radiator by rotating the fan blades facing one side of the radiator 1, and discharges the hot air through the rotation of the fan blades on the other side to achieve the heat dissipation effect. When the cooling fan 2 is a blowing type cooling fan, the setting of the fixed bracket 9 does need to take into account the blowing characteristics of the fan. In this case, the fixed bracket 9 should be reasonably designed and installed between the radiator 1 and the cooling fan 2 (not shown in the figure). The blowing type cooling fan blows the hot air of the radiator 1 out of the radiator by rotating the fan blades facing the other side of the radiator 1 to achieve the heat dissipation effect.

[0069] As an optional embodiment, the heat dissipation system further includes a fan fixing cover 8 , which is arranged corresponding to the radiator 1 , and a plurality of heat dissipation fans 2 are fixed on the fan fixing cover 8 .

[0070] Specifically, the fan fixing cover 8 is used to fix a plurality of cooling fans 2 on the radiator 1. The fans on the fan fixing cover 8 can be evenly distributed over the entire radiator 1; can also be concentratedly distributed to dissipate heat in certain parts; or can be unevenly distributed to dissipate heat in certain parts separately. The distribution and number of cooling fans 2 can be adjusted according to the cooling requirements of different types of radiators 1 and different vehicles.

[0071] Specifically, the fan cover 8 and the radiator 1 can be fixed by snap-fitting, inserting the card slot or using a hook to fix the fan cover 8 and the radiator 1 together, which can usually be quickly connected and removed; the fan cover 8 and the radiator 1 can also be fixed by bolts, using screws and nuts to make the two fit tightly by rotating the screws, which usually has good fixation and is easy to remove and install. In addition, the fan cover 8 and the radiator 1 can also be fixed by welding or riveting, and whether to use it needs to be considered according to actual needs.

[0072] refer to Figure 4 The fixed bracket 9 includes a second fixed rod 902 and a first fixed rod 901, one end of the second fixed rod 902 is vertically and slidably arranged on the first fixed rod 901, the second temperature sensor 6 is arranged at the other end of the second fixed rod 902, the other end of the second fixed rod 902 is inserted between adjacent heat dissipation fins 10 of the radiator 1, and the first temperature sensor 6 is arranged on the first fixed rod 901.

[0073] As an optional embodiment, the first fixing rod 901 is provided with a slide rail, the first temperature sensor 6 is provided with a pulley, and the first temperature sensor 6 is slidably arranged on the slide rail of the first fixing rod 901 through the pulley. In addition, the first temperature sensor 6 can also be fixedly arranged at a preset position of the first fixing rod 901.

[0074] As an optional embodiment, the radiator 1, the cooling fan 2, the first temperature sensor 5, the second temperature sensor 6 and the third temperature sensor 7 are all communicatively connected to the controller. The first temperature sensor 5, the second temperature sensor 6 and the third temperature sensor 7 can send the detected temperature values ​​to the controller in real time, so that the controller can comprehensively judge and adjust the opening and closing sequence and the speed of each fan at this time according to these temperature values.

[0075] Specifically, the controller makes logical judgments based on the ambient temperature and the coolant temperature, and adjusts the start-up sequence and duty cycle of each cooling fan 2 through the set temperature threshold or control logic. For example, when the temperature is too high, the controller will increase the output of voltage or current, so that the fan speed increases, thereby enhancing the cooling effect; while when the temperature is low, the controller will reduce the output of voltage or current accordingly, so that the fan speed decreases to save energy. By controlling the speed of the cooling fan 2, the cooling effect can be accurately adjusted according to the temperature of the equipment or environment, thereby extending the service life of the radiator 1, and through a reasonable cooling fan 2 control strategy, energy consumption can be reduced while ensuring the cooling effect, which not only helps to reduce operating costs, but also avoids unnecessary energy waste.

[0076] It should be noted that, in the process of applying the embodiment of the present invention, if hot air reflux occurs when the vehicle is idling, this will reduce the temperature difference in a specific area. In response to this situation, the speed of the cooling fan 2 in the area needs to be reduced to reduce the impact of the hot air reflux. Subsequently, due to the weakening of the heat dissipation capacity of the area, the temperature difference in the surrounding areas will increase, thereby prompting the speed of the cooling fan 2 to increase, thereby enhancing the heat dissipation capacity of other areas. In this process, the heat dissipation capacity of all areas is still maintained at the best state, thereby ensuring the lowest system energy consumption and the best performance.

[0077] refer to Figure 5 , is a schematic diagram of the working principle of the controller of the heat dissipation system provided in an embodiment of the present invention.

[0078] In the present invention, the controller is used to control a plurality of cooling fans 22 (the plurality of cooling fans 2 may include fan A, fan B ... fan F, etc.) to start working in a preset order to dissipate heat for the target component according to the target temperature, ambient temperature and coolant temperature. Each sensor converts the detected target temperature, ambient temperature and coolant temperature into analog signals, transmits them to the controller, and serves as the basis for controlling the fan speed; the controller processes the received analog signals, such as amplifying and filtering, and converts the analog signals into digital signals to ensure that the subsequent logic circuit can calculate and analyze the signals; in addition, the controller is also responsible for outputting the control signal to the outside, driving the fan to control the speed of the target component according to the output signal.

[0079] It should be noted that the controller does not exist inside the heat dissipation system structure, and is only connected to communicate with sensors and other components in the heat dissipation system structure, receives information transmitted by the heat dissipation system and responds accordingly.

[0080] The cooling system of the vehicle provided by the embodiment of the present invention mainly includes a radiator, which is used to circulate and dissipate heat to the target component through the coolant; a plurality of cooling fans, which are used to dissipate heat to the radiator; the radiator is provided with a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor is used to detect the ambient temperature around the radiator; the second temperature sensor is used to detect the coolant temperature of the coolant in the radiator during the circulating heat dissipation; the third temperature sensor is used to detect the target temperature of the coolant in the radiator after the circulating heat dissipation; the controller is used to control the plurality of cooling fans to start working in a preset order according to the ambient temperature, the coolant temperature and the target temperature. The present invention can improve the overall performance of the cooling system by analyzing, optimizing and improving the characteristics of the cooling system itself, and utilizing the close cooperation and efficient cooperation between the radiator, the cooling fan, the temperature sensor and the controller. At the same time, in view of the uneven temperature that may exist on the surface of the radiator, the cooling fan in the cooling system is precisely controlled. This refined control not only helps to reduce the energy consumed by the cooling system, but also significantly improves the endurance of the vehicle, bringing a more economical and environmentally friendly driving experience to the driver.

[0081] Based on the same inventive concept, corresponding to the cooling system of a vehicle provided in any of the above embodiments, the present invention further provides a control method for the cooling system of a vehicle.

[0082] refer to Figure 6 , which is a flow chart of a control method for a cooling system of a vehicle provided in an embodiment of the present invention.

[0083] Step S601, obtaining the operating temperature of the target component, confirming whether the operating temperature exceeds a preset operating temperature threshold, and in response to the operating temperature exceeding the preset operating temperature threshold, starting the radiator water pump.

[0084] Step S602, obtaining the ambient temperature and the coolant temperature.

[0085] Step S603, for a plurality of cooling fans, the difference between the coolant temperature and the ambient temperature is calculated to obtain a plurality of liquid-air temperature difference values.

[0086] Step S604: sorting the plurality of liquid-air temperature difference values ​​in descending order to obtain a preset order for the plurality of cooling fans.

[0087] Step S605, controlling a plurality of cooling fans to start working in a preset sequence.

[0088] Specifically, the controller obtains the operating temperature of each target component and determines whether the operating temperature exceeds a preset operating temperature threshold. When it is detected that the operating temperature of the target component exceeds the preset operating temperature threshold, the controller controls the radiator water pump to start.

[0089] When the radiator water pump is turned on, the controller continuously detects the temperatures of the target components, and the third temperature sensor detects the target temperature of the coolant inside the radiator after circulating heat dissipation. When the target temperature is greater than the preset target temperature threshold, the ambient temperature around the radiator detected by the first temperature sensor and the coolant temperature of the coolant inside the radiator detected by the second temperature sensor during circulating heat dissipation are read; the liquid-air temperature difference between the coolant temperature and the ambient temperature is calculated to obtain a number of liquid-air temperature difference values; the several liquid-air temperature difference values ​​are sorted in descending order to obtain a preset order for several cooling fans; the controller turns on the cooling fans in sequence according to the preset order.

[0090] As an optional embodiment, the control of turning on a plurality of cooling fans in a preset order includes: in response to turning on any cooling fan, confirming whether the target temperature is not greater than a preset target temperature threshold; in response to the target temperature being greater than the preset target temperature threshold, turning on the next cooling fan adjacent to the cooling fan in the preset order in a preset order.

[0091] As an optional embodiment, in response to turning on any cooling fan, a preset temperature difference range corresponding to the liquid-to-air temperature difference value of the cooling fan is determined, and the fan duty cycle of the cooling fan is controlled according to the preset temperature difference range.

[0092] As an optional embodiment, when it is detected that the operating temperature of the target component does not exceed the preset operating temperature threshold, the controller continues to monitor whether the operating temperature of each target component exceeds the preset operating temperature threshold and performs corresponding processing.

[0093] As an optional embodiment, when the target temperature is not greater than a preset target temperature threshold, the controller controls the cooling function to be turned off.

[0094] The control method of the cooling system of a vehicle provided by the present invention will be described below with more specific embodiments.

[0095] refer to Figure 7 , which is a schematic diagram of the overall control flow of the cooling system of a vehicle provided in an embodiment of the present invention.

[0096] When the cooling function of the heat dissipation system is turned on, the controller receives the operating temperature of each target component and determines whether the operating temperature of the target component exceeds the preset operating temperature threshold. If the operating temperature of the target component exceeds the preset operating temperature threshold, the controller controls the water pump of the radiator to run to cool the target component. During this process, the controller obtains the target temperature of the coolant outlet in real time and determines whether the target temperature exceeds the preset target temperature threshold. If the target temperature does not exceed the preset target temperature threshold, it proves that the radiator can efficiently dissipate heat for the target component with its own capabilities. If the target temperature exceeds the preset target temperature threshold, it proves that the radiator may have a problem due to long-term work. In case of overload or reduced heat dissipation efficiency, it is necessary to dissipate heat from the radiator through a cooling fan. Furthermore, the controller obtains the ambient temperature measured by the first temperature sensor corresponding to each fan and the coolant temperature measured by the second temperature sensor radiator, calculates the liquid-to-air temperature difference between the ambient temperature and the coolant temperature, and sorts all the liquid-to-air temperature difference values ​​to obtain at least one set of preset sequences for several cooling fans. Preferably, each cooling fan corresponds to a first temperature sensor and a second temperature sensor. Therefore, each cooling fan corresponds to a liquid-to-air temperature difference value, that is, all cooling fans correspond to a set of preset sequences, and the liquid-to-air temperature difference values ​​can be sorted in ascending or descending order.

[0097] Specifically, the liquid-air temperature difference values ​​of the cooling fans are sorted in descending order: Assume that there are six cooling fans in the radiator, including fan 21, fan 22, fan 23, fan 24, fan 25, and fan 26 (refer to Figure 1 ), the liquid-air temperature difference at each fan corresponding point is recorded as Δt 21 , Δt 22 , Δt 23 , Δt 24 , Δt 25 , Δt 26 , at this time, the liquid-air temperature difference is arranged in descending order and recorded as:

[0098] Δt 21 ≥Δt 22 ≥Δt 23 ≥Δt 24 ≥Δt 25 ≥Δt 26

[0099] At this time, they should be opened in positive order, that is, the part with the largest liquid-air temperature difference should be opened first, and the part with the smallest liquid-air temperature difference should be opened last, to ensure that the part with the larger liquid-air temperature difference can dissipate heat first, so that the heat dissipation process can be more sufficient and effective.

[0100] Specifically, the liquid-air temperature difference values ​​of the cooling fan can also be sorted in ascending order: that is, at this time, the liquid-air temperature difference values ​​are sorted in ascending order, which is recorded as:

[0101] Δt 26 ≤Δt 25 ≤Δt 24 ≤Δt 23 ≤Δt 22 ≤Δt 21

[0102] At this time, they should be opened in reverse order, that is, the part with the smallest liquid-air temperature difference should be opened last, and the part with the largest liquid-air temperature difference should be opened first, to ensure that the part with a larger liquid-air temperature difference can dissipate heat first, thereby making the heat dissipation process more sufficient and effective.

[0103] At the same time, when applying the embodiment of the present invention, when hot air reflux occurs when the vehicle is idling, the liquid-air temperature difference in the corresponding area will become smaller. At this time, the speed of the cooling fan in this area will decrease, and it is necessary to reduce the speed of the cooling fan to reduce the hot air reflux. After the heat dissipation capacity of this area decreases, the liquid-air temperature difference in the surrounding areas will increase, the speed of the cooling fan 2 will increase, and the heat dissipation capacity of other areas will be improved. At this time, the heat dissipation capacity of all areas is still maintained in the best state, which can achieve the lowest energy consumption and the best performance of the system.

[0104] Specifically, after turning on any cooling fan, determine whether the target temperature is not greater than the preset target temperature threshold; when the target temperature is greater than the preset target temperature threshold, turn on the next cooling fan adjacent to the cooling fan in the preset order according to the preset order, and so on, turn on other cooling fans one by one.

[0105] Specifically, after any cooling fan is turned on, it is determined whether the target temperature is not greater than the preset target temperature threshold; when the target temperature is not greater than the preset target temperature threshold, the next cooling fan in the preset order will no longer be turned on, and the controller will continue to monitor whether the operating temperature of each target component exceeds the preset operating temperature threshold.

[0106] Specifically, when all the cooling fans are turned on, the detected target temperature is not greater than the preset target temperature threshold. If the target temperature is greater than the preset target temperature threshold at this time, the ambient temperature and the coolant temperature are obtained again, and the liquid-air temperature difference is calculated again, and each cooling fan is controlled to be turned on to keep the cooling fan in operation and continue to dissipate heat from the radiator.

[0107] refer to Figure 8 , is a single fan control flow chart provided in an embodiment of the present invention.

[0108] As an optional embodiment, take the fan 21 as an example (refer to Figure 1 ), when the fan 21 is turned on, a preset temperature difference range corresponding to the liquid-air temperature difference value corresponding to the cooling fan is determined, and the fan duty cycle of the cooling fan is controlled according to the preset temperature difference range.

[0109] Specifically, when the fan is turned on, the ambient temperature of the radiator detected by the first temperature sensor and the corresponding coolant temperature are read, and the difference between the ambient temperature and the coolant temperature is calculated to obtain the liquid-air temperature difference; the range of the liquid-air temperature difference is set to strategically adjust the duty cycle of the cooling fan.

[0110] In the embodiment of the present invention, the liquid-air temperature difference is preferably in degrees Celsius (unit ℃) as the temperature standard. When the liquid-air temperature difference is between 0℃ and 3℃, the duty cycle of the corresponding cooling fan is controlled to be 30%; when the liquid-air temperature difference is between 3℃ and 5℃, the duty cycle of the corresponding cooling fan is controlled to be 50%; when the liquid-air temperature difference is between 5℃ and 10℃, the duty cycle of the corresponding cooling fan is controlled to be 80%; when the liquid-air temperature difference is greater than 10℃, the duty cycle of the corresponding cooling fan is controlled to be 100%.

[0111] It should be noted that the fan duty cycle refers to the proportion of high level in the PWM (Pulse Width Modulation) signal used to control the fan speed. The duty cycle directly affects the fan's supply voltage and speed. By adjusting the duty cycle of the PWM signal, the fan's speed can be accurately controlled, thereby achieving a balance between heat dissipation and energy consumption.

[0112] The control method of the cooling system of a vehicle provided by the embodiment of the present invention first obtains the working temperature of the target component, confirms whether the working temperature exceeds the preset working temperature threshold, and in response to the working temperature exceeding the preset working temperature threshold, turns on the radiator water pump; further, obtains the ambient temperature and the coolant temperature; for several cooling fans, calculates the difference between the coolant temperature and the ambient temperature to obtain several liquid-air temperature differences; sorts the several liquid-air temperature differences in descending order to obtain a preset sequence for several cooling fans; and controls several cooling fans to start working in the preset sequence. The present invention can improve the overall performance of the cooling system by analyzing, optimizing and improving the characteristics of the cooling system itself, and utilizing the close cooperation and efficient collaborative work between the radiator, the cooling fan, the temperature sensor and the controller. At the same time, in view of the uneven temperature that may exist on the surface of the radiator, the cooling fan in the cooling system is precisely controlled. This refined control not only helps to reduce the energy consumed by the cooling system, but also significantly improves the vehicle's endurance, bringing a more economical and environmentally friendly driving experience to the driver.

[0113] It should be noted that the method of the embodiment of the present invention can be performed by a single device, such as a computer or a server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present invention, and the multiple devices will interact with each other to complete the method.

[0114] It should be noted that some embodiments of the present invention are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0115] Based on the same inventive concept, the present invention also proposes a vehicle, comprising the cooling system of the vehicle described above, wherein the cooling system of the vehicle is used to execute the control method of the cooling system of the vehicle described above.

[0116] The vehicle provided by the embodiment of the present invention analyzes, optimizes and improves the characteristics of the cooling system itself, and utilizes the close cooperation and efficient collaboration between the radiator, cooling fan, temperature sensor and controller to improve the overall performance of the cooling system. At the same time, in view of the uneven temperature that may exist on the surface of the radiator, the cooling fan in the cooling system is precisely controlled. This refined control not only helps to reduce the energy consumed by the cooling system, but also significantly improves its own endurance, bringing a more economical and environmentally friendly driving experience to the driver.

[0117] In addition, although the operations of the method of the present invention are described in a specific order in the accompanying drawings, this does not require or imply that the operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. On the contrary, the steps depicted in the flow chart can be performed in a different order. Additionally or alternatively, some steps can be omitted, multiple steps can be combined into one step, and / or one step can be decomposed into multiple steps.

[0118] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0119] Although the spirit and principle of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined to benefit, and this division is only for the convenience of expression. The present invention is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims. The scope of the attached claims conforms to the broadest interpretation, thereby including all such modifications and equivalent structures and functions.

Claims

1. A control method for a cooling system of a vehicle, wherein the cooling system of the vehicle comprises a radiator, a cooling fan, a first temperature sensor, and a second temperature sensor, wherein the radiator is used to circulate and dissipate heat for a target component, the cooling fan is a plurality of fans, and is used to dissipate heat for the radiator, the first temperature sensor is used to detect the ambient temperature around the radiator, and the second temperature sensor is used to detect the temperature of the coolant in the radiator during the circulation and heat dissipation, wherein: include: Acquiring an operating temperature of a target component, confirming whether the operating temperature exceeds a preset operating temperature threshold, and in response to the operating temperature exceeding the preset operating temperature threshold, starting a radiator water pump; Get the ambient temperature and coolant temperature; For a plurality of cooling fans, calculating the difference between the coolant temperature and the ambient temperature to obtain a plurality of liquid-air temperature difference values; Sorting the plurality of liquid-to-air temperature difference values ​​in descending order to obtain a preset order for the plurality of cooling fans; Control the plurality of cooling fans to start working according to the preset sequence.

2. The control method of the cooling system of a vehicle according to claim 1, wherein the cooling system of the vehicle further comprises a third temperature sensor, wherein the third temperature sensor is used to detect the target temperature of the coolant in the radiator after circulating and cooling, wherein: Before obtaining the ambient temperature and the coolant temperature, the method further includes: Get the target temperature; confirming whether the target temperature is greater than a preset target temperature threshold; In response to the target temperature being greater than the preset target temperature threshold, it is confirmed to obtain the ambient temperature and the coolant temperature.

3. The control method of the cooling system of a vehicle according to claim 2, characterized in that: The controlling the plurality of cooling fans to start working in the preset order includes: In response to turning on any one of the cooling fans, confirming whether the target temperature is not greater than the preset target temperature threshold; In response to the target temperature being greater than the preset target temperature threshold, a next cooling fan adjacent to the cooling fan in the preset sequence is turned on according to the preset sequence.

4. The control method of the cooling system of a vehicle according to claim 3, characterized in that: Also includes: In response to turning on any one of the cooling fans, a preset temperature difference range corresponding to the liquid-air temperature difference value corresponding to the cooling fan is determined, and a fan duty cycle of the cooling fan is controlled according to the preset temperature difference range.

5. A cooling system for a vehicle, characterized in that: include: A radiator (1) for circulating cooling liquid to dissipate heat from a target component; A plurality of cooling fans (2) for cooling the radiator (1); The radiator (1) is provided with a first temperature sensor (5), a second temperature sensor (6) and a third temperature sensor (7); the first temperature sensor (5) is used to detect the ambient temperature around the radiator (1); the second temperature sensor (6) is used to detect the temperature of the coolant in the radiator (1) during circulation heat dissipation; the third temperature sensor (7) is used to detect the target temperature of the coolant in the radiator (1) after circulation heat dissipation; The controller is used to control the plurality of cooling fans (2) to start working in a preset sequence according to the ambient temperature, the coolant temperature and the target temperature.

6. The cooling system for a vehicle according to claim 5, characterized in that: The radiator (1) is provided with a coolant inlet (3) and a coolant outlet (4), the coolant inlet (3) being used to input coolant into the radiator (1), and the coolant outlet (4) being used to discharge the coolant after circulating and cooling; the third temperature sensor (7) is arranged at the coolant outlet (4).

7. The cooling system for a vehicle according to claim 5, characterized in that: Also includes a fixing bracket (9); When the cooling fan (2) is a suction cooling fan, the fixing bracket (9) is arranged on a side of the radiator (1) away from the cooling fan (2); When the cooling fan (2) is a blowing cooling fan, the fixing bracket (9) is arranged between the radiator (1) and the cooling fan (2).

8. The cooling system for a vehicle according to claim 7, characterized in that: At least one of the first temperature sensors (5) is arranged on the fixing bracket (9) at a position corresponding to the cooling fan (2); at least one of the second temperature sensors (6) is arranged on the radiator (1); and the second temperature sensor (6) corresponds to the first temperature sensor (5).

9. The cooling system for a vehicle according to claim 8, characterized in that: The second temperature sensor (6) is arranged between adjacent heat dissipation fins (10) of the heat sink (1).

10. The cooling system for a vehicle according to claim 9, characterized in that: The fixing bracket (9) comprises a first fixing rod (901) and a second fixing rod (902), wherein both ends of the first fixing rod (901) are arranged on the frame of the radiator (1), and the second fixing rod (903) has a first end and a second end, wherein the first end is movably arranged on the first fixing rod (901), and the second end is inserted between adjacent heat dissipation fins (10) of the radiator (1), and the second temperature sensor (6) is arranged on the second end of the second fixing rod (902).

11. The cooling system for a vehicle according to claim 10, characterized in that: The first temperature sensor (5) is arranged on the first fixing rod (901), the first fixing rod (901) is provided with a slide rail, and the first temperature sensor (5) is provided with a pulley, so that the position of the first temperature sensor (5) on the first fixing rod (901) is adjustable.

12. The cooling system for a vehicle according to claim 11, characterized in that: There are a plurality of fixed brackets (9), and at least two support rods (11) for supporting the two adjacent fixed brackets (9) are cross-arranged between the two adjacent fixed brackets (9). The at least two support rods (11) can rotate around the intersection point to adjust the angle between the at least two support rods (11).

13. A vehicle, characterized in that: It comprises a cooling system for a vehicle as claimed in any one of claims 5 to 12, wherein the cooling system for the vehicle is used to execute a control method for a cooling system for a vehicle as claimed in any one of claims 1 to 4.

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