Front-end cooling device, cooling control method of front-end cooling device and automobile applying front-end cooling device

Abstract

The invention relates to the technical field of automobile chassis cooling systems, in particular to a front end cooling device, a cooling control method thereof and an automobile applying the front end cooling device. The front end cooling device comprises a cooling device assembly obliquely arranged in a front cabin lower space at the bottom of the front cabin and an air guide cover structure, the air guide cover structure covers the top of the cooling device assembly, an air guide channel is formed by the air guide cover structure and the top of the cooling device assembly, and the air guide channel is communicated with the cooling device assembly. And an air guide port of the air guide channel is over against a front cabin bottom grid in front of the front cabin bottom. The technical problems that the windward side of an existing front-end cooling module is poor in air inlet effect, and the cooling performance is affected are solved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile chassis cooling systems, and in particular to a front-end cooling device and a cooling control method thereof, and an automobile using the same. Background Art

[0002] At present, the front-end cooling modules of existing commercial vehicles are generally longitudinally mounted and arranged at the front end of the front cabin to rely on the front air intake grille for cooling. This not only occupies the space in the length direction of the front cabin and increases the length of the front cabin, but most existing new energy commercial vehicles no longer have a front air intake grille in the front part. Instead, they are replaced by small air intake openings on the left and right front sides, which greatly reduces the air intake effect of the windward side of the front cooling module, greatly affecting the cooling performance of existing new energy commercial vehicles, and cannot meet the cooling performance requirements of new energy commercial vehicles, especially affecting the safety and reliability of vehicles in extreme high temperature environments. Summary of the invention

[0003] The purpose of the present application is to provide a front-end cooling device and a cooling control method thereof and a car using the same, so as to solve the technical problem that the windward side of the existing front-end cooling module has poor air intake effect and affects the cooling performance.

[0004] In a first aspect, the present application provides a front-end cooling device, which is applied to an automobile, comprising:

[0005] A cooling device assembly and an air guide cover structure are obliquely arranged in the lower space of the front cabin at the bottom of the front cabin, the air guide cover structure covers the top of the cooling device assembly and forms an air guide channel with the top of the cooling device assembly, the air guide channel is communicated with the cooling device assembly, and the air guide port of the air guide channel faces the front cabin bottom grille in front of the bottom of the front cabin.

[0006] Furthermore, the cooling device assembly includes a condenser, a radiator and an electronic fan which are arranged upward and obliquely from top to bottom, and the air guide cover structure is arranged to cover the top of the condenser and form the air guide channel between the air guide cover structure and the top of the condenser;

[0007] The electronic fan is arranged obliquely at the bottom of the radiator, and the exhaust surface of the electronic fan is inclined downward to exhaust air from the bottom of the car.

[0008] Furthermore, the air guide cover structure is overlapped on the top of the condenser, the condenser is overlapped on the top of the radiator, and the electronic fan is overlapped on the bottom of the radiator; the radiator is fixedly connected with a lower mounting bracket and an upper mounting bracket on the opposite end sides along its inclination direction, respectively, for being installed and connected with the bottom of the front cabin.

[0009] Furthermore, the front-end cooling device further comprises an upper bracket mounting crossbeam fixedly connected to the end of the upper mounting bracket, and a lower bracket mounting crossbeam fixedly connected to the end of the lower mounting bracket; and / or

[0010] The radiator is also provided with a lower shock-absorbing pad and an upper shock-absorbing pad at opposite end sides along the tilting direction thereof.

[0011] Furthermore, the electronic fan adopts a heat dissipation fan array, and there is a distance between the fan blades of each heat dissipation fan and the heat sink.

[0012] Furthermore, the front-end cooling device further includes a coolant pipe connected to the coolant outlet of the radiator;

[0013] The coolant pipeline is equipped with an electronic water pump connected to the coolant outlet of the radiator through a hose, a two-way valve connected to the electronic water pump, a battery and a domain controller respectively connected to the two valves of the two-way valve, a motor connected to the domain controller, a three-way component respectively connected to the battery, the motor and the radiator, and an expansion kettle for replenishing the radiator.

[0014] Furthermore, the coolant pipeline adopts a metal hose and a quick connector; and / or

[0015] It also includes a radiator temperature sensor installed on the radiator, an electronic water pump temperature sensor installed beside the inlet of the coolant pipeline, and a wind speed sensor installed on the electronic fan.

[0016] In a second aspect, the present application provides a cooling control method, which is applied to the aforementioned front-end cooling device, and the cooling control method includes:

[0017] When the vehicle is in operation,

[0018] If the temperature of the radiator outlet water chamber is less than or equal to 40°C, open the two-way valve to open the cooling battery circuit and the domain control and motor circuit;

[0019] If the temperature of the radiator water chamber is greater than 40°C, close the battery circuit;

[0020] If the battery temperature is greater than 40°C and the radiator outlet water chamber temperature is lower than the battery temperature, the two-way valve battery circuit will be reopened to cool the battery circuit and the domain control and motor circuits until the battery temperature is less than or equal to 40°C.

[0021] Furthermore, the cooling control method further includes:

[0022] When the vehicle is in charging state, first turn off the domain control and motor circuits, then,

[0023] If the radiator temperature is less than or equal to 40°C, the battery circuit is opened to cool the battery;

[0024] If the radiator temperature is greater than 40°C, the electronic fan is turned on. When the radiator temperature is less than or equal to 40°C, the battery circuit is turned on to cool the battery.

[0025] In a third aspect, the present application provides an automobile, which applies the front-end cooling device described in any of the preceding items, and adopts the cooling control method described in any of the preceding items, and a front trunk or electronic control components are arranged in the upper space of the front cabin of the automobile.

[0026] Compared with the prior art, the front-end cooling device and its cooling control method and the automobile using the same provided by the present application, the front-end cooling device includes a cooling device assembly and an air guide cover structure which are obliquely arranged in the lower space of the front cabin at the bottom of the front cabin of the automobile, the air guide cover structure covers the top of the cooling device assembly, and the air guide cover structure and the top of the cooling device assembly form an air guide channel, and the air guide channel is communicated with the cooling device assembly, and the air guide port of the air guide channel is directly opposite to the front cabin bottom grille in front of the bottom of the front cabin, so that the air entering from the front cabin bottom grille can directly pass through the cooling device assembly for liquid-to-gas heat exchange cooling.

[0027] Since the lower space of the front cabin of current new energy vehicles is difficult to be effectively utilized, especially new energy vehicles with rear-wheel drive, the present application arranges the front-end cooling device obliquely on the lower space of the front cabin at the bottom of the front cabin. The specific oblique arrangement angle can be determined according to the situation of the lower space of the front cabin, so as to reasonably utilize the lower space of the front cabin that is difficult to be effectively utilized, and at the same time, the length of the front cabin can be shortened accordingly, and at the same time, the upper space of the front cabin can be increased to increase the cargo space or the space for placing electronic components; and the front-end cooling device is arranged obliquely, which can maximize the reasonable utilization of the lower space of the front cabin without hindering the arrangement of other devices at the bottom of the front cabin; and the air is introduced by using the grille at the bottom of the front cabin to greatly increase the windward surface of the front-end cooling device and improve the cooling performance, and an air guide cover structure is arranged to guide the air entering the grille at the bottom of the front cabin directly into the radiator and condenser of the cooling device assembly for liquid-gas heat exchange, which can significantly improve the efficiency of the contact between the radiator and condenser of the cooling device assembly and the cooling air, and further effectively improve the cooling performance of the front-end cooling device and the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the three-dimensional structure of a front-end cooling device provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the side structure of a front-end cooling device provided in an embodiment of the present application;

[0031] Figure 3 A partial side structural schematic diagram of a front-end cooling device provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structural layout of a front-end cooling device provided in an embodiment of the present application;

[0033] Figure 5 A simulation diagram of the wind speed flow field of the front-end cooling device provided in the embodiment of the present application;

[0034] Figure 6 A schematic diagram of the structure of a condenser provided in an embodiment of the present application;

[0035] Figure 7 A schematic diagram of the structure of a radiator provided in an embodiment of the present application;

[0036] Figure 8 A schematic diagram of the structure of the electronic fan provided in an embodiment of the present application;

[0037] Fig. 9 A schematic diagram of the structure of the air guide cover provided in an embodiment of the present application;

[0038] Fig.10 A simulation diagram of the wind speed flow field on the condenser surface provided in the embodiment of the present application;

[0039] Fig.11 A simulation diagram of the wind speed flow field on the surface of the radiator provided in the embodiment of the present application;

[0040] Fig.12 A simulation diagram of thermal damage analysis of a vehicle body electronic stability controller provided in an embodiment of the present application;

[0041] Fig.13 A simulation diagram of the thermal damage analysis of the front trunk provided in the embodiment of the present application;

[0042] Fig.14 A simulation diagram of thermal damage analysis of the front buffer block provided in an embodiment of the present application;

[0043] Fig.15 A simulation diagram of heat damage analysis of a drying tank provided in an embodiment of the present application;

[0044] Fig.16 A schematic diagram of the coolant flow provided in an embodiment of the present application;

[0045] Fig.17 This is a flow chart of the cooling control method provided in an embodiment of the present application.

[0046] Reference numerals:

[0047] 100-front end cooling device;

[0048] 10- condenser;

[0049] 20- Radiator;

[0050] 21- Coolant outlet;

[0051] 22-Coolant inlet;

[0052] 23- Radiator temperature sensor socket;

[0053] 30-Electronic fan;

[0054] 31- Exhaust surface;

[0055] 32- Wind speed sensor socket;

[0056] 40-air guide cover structure;

[0057] 41- air guide channel;

[0058] 411-air guide port;

[0059] 51-lower mounting bracket;

[0060] 52-upper mounting bracket;

[0061] 61-lower bracket installation beam;

[0062] 62-upper bracket installation beam;

[0063] 71-lower shock pad;

[0064] 72-upper shock pad;

[0065] 201-Electronic stability controller;

[0066] 202-front trunk;

[0067] 203-front buffer block;

[0068] 204-Drying tank. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0070] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0071] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0072] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0073] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0074] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0076] like Figures 1 to 9 As shown, the embodiment of the present application provides a front-end cooling device 100, and a car using the front-end cooling device 100, the car is preferably a new energy car, a commercial vehicle, etc., such as Fig.17 As shown, a cooling control method applied to the front-end cooling device 100 is also provided.

[0077] like Figures 1 to 4 As shown, the front-end cooling device 100 includes a cooling device assembly and an air guide cover structure 40 which are obliquely arranged in the lower space of the front cabin at the bottom of the front cabin. The air guide cover structure 40 covers the top of the cooling device assembly and forms an air guide channel 41 with the top of the cooling device assembly. The air guide channel 41 is communicated with the cooling device assembly, and the air guide port 411 of the air guide channel 41 faces the front cabin bottom grille in front of the bottom of the front cabin of the automobile.

[0078] Compared with the prior art, the front-end cooling device 100 and its cooling control method and the automobile using the same provided in the embodiment of the present application, the front-end cooling device 100 includes a cooling device assembly and an air guide cover structure 40 which are obliquely arranged in the lower space of the front cabin at the bottom of the front cabin of the automobile, the air guide cover structure 40 covers the top of the cooling device assembly, and the air guide cover structure 40 and the top of the cooling device assembly form an air guide channel 41, and the air guide channel 41 is communicated with the cooling device assembly, and the air guide port 411 of the air guide channel 41 is directly opposite to the front cabin bottom grille in front of the bottom of the front cabin, so that the air entering from the front cabin bottom grille can be directly cooled by liquid-to-gas heat exchange through the cooling device assembly.

[0079] Since the lower space of the front cabin of current new energy vehicles is difficult to be effectively utilized, especially new energy vehicles with rear-wheel drive, the present application arranges the front-end cooling device 100 obliquely on the lower space of the front cabin at the bottom of the front cabin. The specific oblique arrangement angle can be determined according to the situation of the lower space of the front cabin, so as to reasonably utilize the lower space of the front cabin that is difficult to be effectively utilized, and at the same time, the length of the front cabin can be shortened accordingly, and at the same time, the upper space of the front cabin can be increased to increase the cargo space or the space for placing electronic components; and the front-end cooling device 100 is arranged obliquely, which can maximize the reasonable utilization of the lower space of the front cabin, and at the same time does not hinder the arrangement of other devices at the bottom of the front cabin; and the air is introduced by using the grille at the bottom of the front cabin, which greatly increases the windward surface of the front-end cooling device 100 and improves the cooling performance, and an air guide cover structure 40 is arranged to guide the air entering the grille at the bottom of the front cabin directly into the radiator 20 and the condenser 10 of the cooling device assembly for liquid-gas heat exchange, which can significantly improve the efficiency of the radiator 20 and the condenser 10 of the cooling device assembly in contact with the cooling air, and further effectively improve the cooling performance of the front-end cooling device 100 and the whole vehicle.

[0080] A specific embodiment is as follows Figures 1 to 9 As shown, the cooling device assembly of the aforementioned front-end cooling device 100 may specifically include a condenser 10, a radiator 20 and an electronic fan 30 which are arranged upwardly and tilted in sequence from top to bottom, the aforementioned air guide cover structure 40 is covered and arranged on the top of the condenser 10, and the aforementioned air guide channel 41 is formed between the top of the condenser 10; the electronic fan 30 is tilted at the bottom of the radiator 20, and the exhaust surface 31 of the electronic fan 30 is tilted downward to exhaust air, and discharged from the bottom of the car.

[0081] With such a configuration, the air entering from the grille at the bottom of the front cabin can be guided through the condenser 10 and the radiator 20, and finally discharged from the bottom of the car by the electronic fan 30. On the one hand, the heat is discharged from the bottom, and the upper space of the front cabin is freed up to install the front trunk 202 or electronic components, etc., to achieve multi-platform compatibility; on the other hand, the high-temperature cooling air is blown directly to the bottom of the car by the electronic fan 30, avoiding the risk of heat damage caused by flowing through other electrical components.

[0082] like Figures 12 to 15 As shown, it is a simulation diagram of thermal damage analysis of other electrical components near the front-end cooling device 100 provided by an embodiment of the present application. The other electrical components specifically include a vehicle electronic stability controller 201, a front trunk 202, a front bumper block 203, and a drying tank 204. It can be seen from the figure that the above-mentioned electrical components near the front-end cooling device 100 are basically not affected by the thermal damage.

[0083] like Figure 5As shown, it is a wind velocity flow field simulation diagram of the front-end cooling device 100 provided in an embodiment of the present application. It can be seen intuitively from the figure that due to the setting of the wind guide cover structure 40, a large amount of air enters the condenser 10 and the radiator 20 of the cooling device assembly through the air guide port 411 and the air guide channel 41, and is finally discharged from the bottom by the electronic fan 30. It can be seen intuitively from the figure that the efficiency of heat exchange between the front-end cooling device 100 and the cooling air is significantly improved.

[0084] And, if Fig.10 and Fig.11 As shown, there are respectively simulation diagrams of wind velocity flow fields on the surfaces of the condenser 10 and the radiator 20. It can be seen intuitively from the diagram that the wind speed on the surfaces of the condenser 10 and the radiator 20 is relatively strong, and the wind speed is significantly improved, that is, the efficiency of heat exchange with the cooling air is significantly improved, which further indicates a significant improvement in the cooling performance.

[0085] An optional connection installation method is as follows: Figure 1 and Figure 2 As shown, the air guide cover structure 40 is overlapped and set on the top of the condenser 10, the condenser 10 is overlapped and set on the top of the radiator 20, and the electronic fan 30 is overlapped and set on the bottom of the radiator 20; the radiator 20 is fixedly connected with a lower mounting bracket 51 and an upper mounting bracket 52 at the opposite end sides along its inclined direction, which are used to be installed and connected with the bottom of the front cabin to achieve reliable connection and fixation.

[0086] Furthermore, the front-end cooling device provided in the embodiment of the present application may also include an upper bracket mounting beam 62 fixedly connected to the end of the upper mounting bracket 52, and a lower bracket mounting beam 61 fixedly connected to the end of the lower mounting bracket 51, so as to strengthen the mounting structure and achieve a more adaptable installation with the bottom of the front cabin.

[0087] An optional embodiment is that the radiator 20 is also provided with a lower shock-absorbing pad 71 and an upper shock-absorbing pad 72 at the opposite end sides along its tilt direction to protect the radiator 20 from shock, improve the stability of the radiator 20, and reduce the impact of vibration on the radiator 20 when the car is driving.

[0088] In another optional embodiment, the electronic fan 30 may adopt an efficient auxiliary cooling fan array, and a fan blade of each cooling fan is spaced apart from the heat sink 20. When installing the cooling fan array, ensure that each cooling fan can rotate smoothly, and ensure that a proper distance is maintained between the fan blade and the heat sink 20 to avoid interference.

[0089] In a preferred embodiment, the front-end cooling device provided in the embodiment of the present application may further include a coolant pipe connected to the coolant outlet 21 of the radiator 20. Fig.16As shown, it is a schematic diagram of the coolant flow direction. The figure shows the coolant flow direction of the cooling system. Specifically, the coolant pipeline is equipped with an electronic water pump connected to the coolant outlet 21 of the radiator 20 through a hose, a two-way valve connected to the electronic water pump, a battery and a domain controller respectively connected to the two valves of the two-way valve, a motor connected to the domain controller, and a three-way component respectively connected to the battery, the motor and the radiator 20, and an expansion kettle for replenishing the radiator 20. The expansion kettle is connected to the coolant inlet 22 and the coolant outlet 21 of the radiator 20. Due to the thermal expansion and contraction phenomenon of the coolant, the expansion kettle is provided. When the thermal expansion volume increases, the increased part first temporarily flows into the expansion kettle. When the contraction volume decreases, the coolant in the expansion kettle is replenished.

[0090] More preferably, the aforementioned coolant pipeline adopts a metal hose and a quick connector that are resistant to high temperature and high pressure and have good sealing performance to prevent coolant leakage.

[0091] The front-end cooling device provided in the embodiment of the present application may also include a radiator temperature sensor installed on the radiator 20, such as Figure 3 As shown, the radiator temperature sensor socket 23 can be inserted and connected, and can also include an electronic water pump temperature sensor installed beside the inlet of the coolant pipe, and a wind speed sensor installed on the electronic fan 30, such as Figure 1 and Figure 2 As shown, the wind speed sensor can be connected by inserting the wind speed sensor socket 32. The temperature changes of the radiator 20, the electronic water pump, the electronic fan 30, etc. can be detected in real time, and transmitted to the control system in real time to facilitate timely adjustment.

[0092] like Fig.16 and Fig.17 As shown, an embodiment of the present application also provides a cooling control method, which can be applied to the front-end cooling device 100 of any of the aforementioned embodiments, and the cooling control method includes: first, when the vehicle is in operation, if the radiator outlet water chamber temperature (hereinafter referred to as the radiator temperature) is less than or equal to 40°C, the two-way valve is opened to open the cooling battery circuit and the domain control and motor circuits; if the radiator outlet water chamber temperature is greater than 40°C, the battery circuit is closed; if the battery temperature is greater than 40°C and the radiator outlet water chamber temperature is lower than the battery temperature, the two-way valve battery circuit is reopened, and the cooling battery circuit and the domain control and motor circuits are opened until the battery temperature is less than or equal to 40°C.

[0093] Second, when the vehicle is in charging state, first turn off the domain control and motor circuits, then, if the radiator temperature is less than or equal to 40°C, turn on the battery circuit to cool the battery; if the radiator temperature is greater than 40°C, turn on the electronic fan 30, and when the radiator temperature is less than or equal to 40°C, turn on the battery circuit to cool the battery.

[0094] The above cooling control method, in the operating state, determines the operation of the two-way valve and the battery circuit according to the temperature of the radiator water outlet water chamber, and considers the relationship between the battery temperature and the radiator temperature to adjust the circuit cooling scheme; when entering the charging state, first close the domain control and motor circuit, and then decide whether to start the electronic fan and battery circuit cooling operation according to the radiator temperature, so as to realize the temperature control and circuit coordinated operation of each key component of the vehicle under different working conditions.

[0095] The embodiment of the present application also provides an automobile, which uses the front-end cooling device 100 of any of the aforementioned embodiments and the aforementioned cooling control method. Since the front-end cooling device 100 is arranged in the lower space of the front cabin, the front trunk 202 or electronic control components are arranged in the upper space of the front cabin of the automobile, thereby making full use of the space, greatly improving the automobile cargo compartment space, and at the same time, the cooling performance of the automobile is also greatly improved.

[0096] The embodiment of the present application also provides an installation method for the front-end cooling device 100. During the installation process, a special high-precision positioning fixture and fastening bolts can be used to ensure that the radiator 20 is installed firmly and reliably, and accurate tilt angle adjustment can be achieved.

[0097] After the radiator 20 is installed, its tilt angle can be debugged. The debugging method can be: by simulating different vehicle driving postures and domain control load conditions, check whether the tilt angle of the radiator 20 can be guaranteed not to change when the vehicle moves, and use professional angle measuring instruments to accurately measure the adjusted angle to ensure that the angle error is within the allowable range.

[0098] Then you can connect the domain controller, radiator temperature sensor, electronic water pump temperature sensor, wind speed sensor, etc. After the connection is completed, you can initialize the control system, including setting the calibration parameters of each sensor, the initial state of the actuator, and the communication protocol, etc. The control system can be preliminarily tested through dedicated test software to check whether the communication between each part is normal and whether the data transmission is accurate.

[0099] After completing the installation of each component, the system joint debugging can be carried out by starting the domain control and simulating different working conditions, such as idling, low-speed driving, high-speed driving, climbing, downhill, etc. Under each working condition, check the operation of the entire cooling system, including the adjustment of the tilt angle of the radiator 20, the adjustment of the coolant flow, the angle change of the wind guide cover structure 40, and the speed adjustment of the electronic fan 30. Further optimize the system parameters according to the temperature data to ensure that the cooling system can work stably and efficiently under various working conditions.

[0100] The embodiment of the present application also provides a cooling control method for different stages during the operation of the automobile, including: first, the startup and preheating stage, when the automobile starts, the control system starts the self-test program to check whether each sensor, actuator and circuit is working normally; at the same time, the domain control starts to operate, and the coolant starts to circulate between the domain control and the radiator; in this stage, due to the low temperature of the domain control, the electronic fan 30 is in a low speed operation or stopped state, the wind guide cover structure 40 is in the initial position, the coolant flow regulating device maintains a low coolant flow, the heat of the domain control is gradually transferred to the coolant, and the coolant temperature rises slowly.

[0101] Second, during the normal driving phase, as the car enters the normal driving state, the domain control load and temperature gradually stabilize within a certain range, and the control system adjusts the cooling system in real time according to the domain control temperature, vehicle speed, wind speed and wind direction. When the car domain control temperature rises to the normal operating temperature range (such as 55-65°C), the speed of the electronic fan 30 increases accordingly according to the degree of temperature increase; at the same time, the coolant flow regulation system accurately controls the coolant flow according to the real-time load and temperature of the domain control to maintain the thermal balance in the radiator.

[0102] During driving, if the car encounters a change in wind speed or direction, such as from a headwind to a tailwind, the control system quickly calculates the demand for coolant through the data changes of the wind speed sensor and the wind direction sensor; at the same time, the speed of the electronic fan 30 will also be fine-tuned according to the new air flow conditions to ensure that the heat dissipation efficiency is not affected.

[0103] If the vehicle's driving speed changes, such as from low speed to high speed, the control system will also make corresponding adjustments. When driving at high speed, in order to reduce the impact of air resistance on the vehicle's dynamic performance, the speed of the electronic fan 30 is optimized according to the comprehensive situation of the vehicle speed and the electric vehicle domain control temperature. The speed may be appropriately reduced to reduce energy consumption and the mutual interference between the electronic fan 30 and the airflow; if the vehicle encounters high engine load conditions such as climbing a slope or heavy load, the control system will increase the opening of the electric regulating valve in the coolant flow regulation system to increase the coolant flow to ensure that more heat can be effectively taken away; at the same time, the speed of the electronic fan 30 is greatly increased, so that the air can exchange heat with the radiator more efficiently.

[0104] Third, during special operating conditions, when the car is driving in an extremely high temperature environment (such as a desert area), the control system will continuously monitor the ambient temperature, the electric vehicle domain control temperature, and the radiator temperature. In addition to the above-mentioned routine adjustments based on the electric vehicle domain control load and vehicle speed, the speed of the electronic fan 30 will be fine-tuned more frequently. For example, even in the idle state, if the ambient temperature is too high, the electronic fan 30 will maintain a certain speed. If the car is driving on a flooded section of the road, the sensor detects a change in humidity, and the control system will strengthen the monitoring of the radiator 20 to prevent the condensation of water vapor from affecting the heat dissipation efficiency; if water is found on the surface of the radiator 20 or the humidity increases abnormally, adjust the speed of the electronic fan 30 to prevent the accumulated water from being blown into the radiator 20 and causing damage.

[0105] Fourth, in the fault emergency stage, if a sensor fails during driving, such as the failure of the wind speed sensor, other microprocessors in the control system will estimate and compensate through other relevant parameters (such as vehicle speed, electric vehicle domain control load, etc.); at the same time, the fault information will be fed back to the vehicle's control system to prompt the driver to repair it in time. If the electric control valve fails in the coolant flow regulation system, the intelligent controller will try to use a backup control strategy, such as controlling the coolant flow according to a preset fixed flow mode or a simple proportional relationship according to the engine temperature, and issue an alarm. If a fan in the cooling fan array fails, the other fans will increase the speed appropriately under the regulation of the control system to compensate for the loss of air flow, and will also issue a fault prompt to the driver to ensure that the cooling system can still maintain normal operation to a certain extent and ensure the safe operation of the engine.

[0106] Fifth, during the parking and cooling phase, when the car stops, the electric vehicle domain controller stops running, but the coolant is still in the radiator 20. At this time, the control system will decide whether to continue running the electronic fan 30 for a period of time according to the temperature of the radiator 20. If the temperature of the radiator 20 is still high when the car is parked, the electronic fan 30 will continue to work until the temperature drops to a safe range.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A front end cooling device, applied to an automobile, characterized in that: include: A cooling device assembly and an air guide cover structure are obliquely arranged in the lower space of the front cabin at the bottom of the front cabin, the air guide cover structure covers the top of the cooling device assembly and forms an air guide channel with the top of the cooling device assembly, the air guide channel is communicated with the cooling device assembly, and the air guide port of the air guide channel faces the front cabin bottom grille in front of the bottom of the front cabin.

2. The front end cooling device according to claim 1, characterized in that: The cooling device assembly includes a condenser, a radiator and an electronic fan which are arranged upward and obliquely in sequence from top to bottom, and the air guide cover structure is arranged to cover the top of the condenser and form the air guide channel between the air guide cover structure and the top of the condenser; The electronic fan is arranged obliquely at the bottom of the radiator, and the exhaust surface of the electronic fan is inclined downward to exhaust air from the bottom of the car.

3. The front end cooling device according to claim 2, characterized in that: The air guide cover structure is overlapped and arranged on the top of the condenser, the condenser is overlapped and arranged on the top of the radiator, and the electronic fan is overlapped and arranged on the bottom of the radiator; the radiator is fixedly connected with a lower mounting bracket and an upper mounting bracket on the opposite end sides along its inclination direction, respectively, for being installed and connected with the bottom of the front cabin.

4. The front end cooling device according to claim 3, characterized in that: Also includes an upper bracket mounting crossbeam fixedly connected to the end of the upper mounting bracket, and a lower bracket mounting crossbeam fixedly connected to the end of the lower mounting bracket; and / or The radiator is also provided with a lower shock-absorbing pad and an upper shock-absorbing pad at opposite end sides along the tilting direction thereof.

5. The front end cooling device according to claim 2, characterized in that: The electronic fan adopts a heat dissipation fan array, and there is a distance between the fan blades of each heat dissipation fan and the heat sink.

6. The front end cooling device according to any one of claims 2 to 5, characterized in that: Also included is a coolant pipeline connected to the coolant outlet of the radiator; The coolant pipeline is equipped with an electronic water pump connected to the coolant outlet of the radiator through a hose, a two-way valve connected to the electronic water pump, a battery and a domain controller respectively connected to the two valves of the two-way valve, a motor connected to the domain controller, a three-way component respectively connected to the battery, the motor and the radiator, and an expansion kettle for replenishing the radiator.

7. The front end cooling device according to claim 6, characterized in that: The coolant pipeline adopts a metal hose and a quick connector; and / or It also includes a radiator temperature sensor installed on the radiator, an electronic water pump temperature sensor installed beside the inlet of the coolant pipeline, and a wind speed sensor installed on the electronic fan.

8. A cooling control method, characterized in that: Applied to the front-end cooling device according to claim 6, the cooling control method comprises: When the vehicle is in operation, If the temperature of the radiator outlet water chamber is less than or equal to 40°C, open the two-way valve to open the cooling battery circuit and the domain control and motor circuit; If the temperature of the radiator water chamber is greater than 40°C, close the battery circuit; If the battery temperature is greater than 40°C and the radiator outlet water chamber temperature is lower than the battery temperature, the two-way valve battery circuit will be reopened to cool the battery circuit and the domain control and motor circuits until the battery temperature is less than or equal to 40°C.

9. The cooling control method according to claim 8, characterized in that: Also includes: When the vehicle is in charging state, first turn off the domain control and motor circuits, then, If the radiator temperature is less than or equal to 40°C, the battery circuit is opened to cool the battery; If the radiator temperature is greater than 40°C, the electronic fan is turned on. When the radiator temperature is less than or equal to 40°C, the battery circuit is turned on to cool the battery.

10. An automobile, characterized in that: The front end cooling device according to any one of claims 1 to 7 is applied, and the cooling control method according to claim 8 or 9 is adopted, and a front trunk or electronic control components are arranged in the upper space of the front cabin of the automobile.

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