CN117734642A - Vehicle brake disc cooling control method and device based on grid control - Google Patents

Abstract

The invention discloses a vehicle brake disc cooling control method and device based on grid control, comprising the following steps: reading the speed of a vehicle in real time, controlling the grid to be opened when the speed is larger than a first speed, and controlling the grid to be closed when the speed is smaller than a second speed; establishing a temperature prediction model of a brake disc, and collecting braking information of a vehicle, wherein the braking information comprises braking times and braking force, and the temperature prediction model predicts the temperature of the brake disc according to the braking information, the vehicle speed, vehicle environment information and the state of the grid in preset time; and when the temperature of the brake disc is greater than a preset value, forcedly controlling the grid to be opened. The invention can effectively reduce the wind resistance of the vehicle during high-speed running, and can cool the braking system through the grille if necessary, thereby ensuring the braking performance of the braking system.

Description

Vehicle brake disc cooling control method and device based on grid control

Technical Field

The application relates to the technical field of automobiles, in particular to a vehicle brake disc cooling control method and device based on grid control.

Background

The traditional oil truck has the advantages that as the engine is arranged in the front cabin, the temperature in the cabin needs to be reduced, the engine is convenient to enter air, the grille is arranged at the front part of the front cabin, and the grille has the requirement of the area of a ventilation opening. The air flow enters the front cabin through the grille and flows through the periphery of the brake disc to cool the brake disc. Meanwhile, the wheel rim ventilation area of the traditional oil truck is large, and air flow also passes through the wheel rim ventilation area in a large area, so that the temperature of the brake disc can be effectively reduced.

When the electric vehicle is designed, the front grille of most electric vehicles is designed to be closed, so that the energy consumption is reduced, the cruising is improved, and the front cabin is free of heating parts such as an engine and the like. The closed grille can effectively reduce wind resistance and promote the endurance of the electric vehicle; meanwhile, the rim or the wheel cover is designed in a full-coverage mode, wind resistance is reduced, and air flow flowing through the brake disc is reduced.

The patent name is proposed by Beijing automobile group off-road vehicle Co., ltd: in chinese patent with publication number CN107539259B, a grille control device is disclosed that includes: the automobile grille control system comprises a sensor, a controller, a grille control motor, a fixed grille and a movable grille, wherein the sensor is arranged on an engine cabin of the automobile, the controller is arranged in a cab of the automobile, the fixed grille and the movable grille are all arranged right in front of the engine cabin, the fixed grille is movably connected with the movable grille, the grille control motor is arranged below the movable grille, threads are arranged on the lower side edge of the movable grille, a motor shaft of the grille control motor is meshed with threads on the lower side edge of the movable grille, the sensor is connected with the controller through a first cable, and the controller is connected with the grille control motor through a second cable.

The patent name proposed by the company of the Chery automobile Co., ltd is: a grid control method and device, patent publication number is: chinese patent CN109130841B discloses determining a current grille control strategy corresponding to the current grille opening gear according to the current grille opening gear, wherein input parameters of each grille control strategy include water temperature, air conditioning pressure, and vehicle speed. And receiving the collected current water temperature, current air conditioner pressure and current vehicle speed. And taking the current water temperature, the current air conditioning pressure and the current vehicle speed as the input parameters of the current grid control strategy to control the grid opening gear. Because not only the current water temperature and the speed of the vehicle are considered when the gear of the grille opening is controlled, but also the current air-conditioning pressure of the vehicle is considered, the damage to the air conditioner caused by overhigh air-conditioning pressure is avoided, and the grille opening is adjusted in real time on the basis of ensuring the safe operation of the air conditioner, so that the fuel consumption of the vehicle is reduced while the safety of the vehicle is ensured.

However, in the technology disclosed in the prior art, the grille opening mainly performs cooling control on the engine, the air conditioner compressor and the battery. The cooling of the brake system is not considered to avoid the technical problem of the high-temperature braking efficiency of the brake system.

Disclosure of Invention

In view of the above problems, the application provides a vehicle brake disc cooling control method based on grid control, which is used for solving the technical problem that wind resistance and brake system cooling cannot be considered in the existing electric vehicle grid control.

In order to achieve the above object, the present inventors provide a vehicle brake disc cooling control method based on a grille control, wherein the grille is movably disposed at the front of a vehicle, and when the grille is opened, an air flow can flow into a rim and a brake disc of the vehicle through the grille; the method comprises the following steps:

reading the speed of a vehicle in real time, controlling the grid to be opened when the speed is larger than a first speed, and controlling the grid to be closed when the speed is smaller than a second speed;

establishing a temperature prediction model of a brake disc, and collecting braking information of a vehicle, wherein the braking information comprises braking times and braking force, and the temperature prediction model predicts the temperature of the brake disc according to the braking information, the vehicle speed, vehicle environment information and the state of the grid in preset time; and when the temperature of the brake disc is greater than a preset value, forcedly controlling the grid to be opened.

Further, the method comprises the steps of:

acquiring the current running road condition of the vehicle according to the electronic map and the vehicle positioning information, and adjusting the temperature prediction model into a mountain road mode if the vehicle is on a mountain road or a long downhill road section; the temperature prediction model calculates the braking demand of the vehicle in a period of time according to the current road condition of the vehicle in a mountain road mode, and predicts the temperature of the brake disc in combination with the braking demand.

Further, in the mountain road mode, the grille is forcedly controlled to be opened.

Further, the method further comprises the steps of:

the temperature prediction model acquires route navigation information of the vehicle, and predicts the speed of the vehicle in each road section and braking requirements according to the road conditions of the passing vehicle in the navigation information; and predicting the temperature of the brake disc of the vehicle in different road sections according to the vehicle speed and the braking demand, and starting the grille in advance and sending deceleration prompt information in advance when the temperature of the predicted brake disc is higher than a warning value.

Further, the vehicle environment information includes an altitude at which the vehicle is located and an environmental temperature.

Further, the first vehicle speed is 60kph, and the second vehicle speed is 30kph.

Further, when the vehicle is between the first vehicle speed and the second vehicle speed, the opening angle of the grille is proportional to the current vehicle speed.

In order to solve the technical problems, the present application further provides another technical scheme:

the vehicle brake disc cooling control device based on grid control, wherein the grid is movably arranged at the front part of a vehicle, and when the grid is opened, air flow can flow into a rim and a brake disc of the vehicle through the grid; the vehicle brake disc cooling control device includes:

a first control module: the method comprises the steps of reading the speed of a vehicle in real time, controlling the grid to be opened when the speed is larger than a first speed, and controlling the grid to be closed when the speed is smaller than a second speed;

the temperature prediction module is used for establishing a temperature prediction model of the brake disc, collecting braking information of a vehicle, wherein the braking information comprises braking times and braking force, and predicting the temperature of the brake disc according to the braking information, the vehicle speed, vehicle environment information and the state of the grid in preset time; and when the temperature of the brake disc is greater than a preset value, forcedly controlling the grid to be opened.

Further, the temperature prediction module is further configured to: acquiring the current running road condition of the vehicle according to the electronic map and the vehicle positioning information, and adjusting the temperature prediction model into a mountain road mode if the vehicle is on a mountain road or a long downhill road section; the temperature prediction model calculates the braking demand of the vehicle in a period of time according to the current road condition of the vehicle in a mountain road mode, and predicts the temperature of the brake disc in combination with the braking demand.

Further, the temperature prediction module is further configured to:

the temperature prediction model acquires route navigation information of the vehicle, and predicts the speed of the vehicle in each road section and braking requirements according to the road conditions of the passing vehicle in the navigation information; and predicting the temperature of the brake disc of the vehicle in different road sections according to the vehicle speed and the braking demand, and starting the grille in advance and sending deceleration prompt information in advance when the temperature of the predicted brake disc is higher than a warning value.

Compared with the prior art, the technical scheme effectively reduces the wind resistance of the vehicle during high-speed running by controlling the opening and closing of the grille through the vehicle speed; the temperature prediction model of the brake disc is further arranged, and the temperature of the brake disc can be predicted through the braking information of the vehicle, the speed of the vehicle, the environment information of the vehicle and the state of the grid; and when the temperature of the brake disc is greater than a preset value, the grille is forcedly controlled to be opened, so that air flows into the rim and the brake disc of the vehicle through the grille, the brake disc is cooled, the reduction of the braking performance of the vehicle is effectively avoided, and the running safety of the vehicle is improved.

The foregoing summary is merely an overview of the present application, and is provided to enable one of ordinary skill in the art to make more clear the present application and to be practiced according to the teachings of the present application and to make more readily understood the above-described and other objects, features and advantages of the present application, as well as by reference to the following detailed description and accompanying drawings.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of the present invention and are not to be construed as limiting the application.

In the drawings of the specification:

FIG. 1 is a schematic view of the airflow direction when the grille is closed according to an embodiment;

FIG. 2 is a schematic view of airflow direction when the grille is opened according to the embodiment;

FIG. 3 is a flow chart of a vehicle brake disc cooling control method based on grid control according to an embodiment;

FIG. 4 is a schematic diagram of a grid control according to an embodiment;

FIG. 5 illustrates the state of the grille in different states of the vehicle of the embodiment;

FIG. 6 is a block diagram of a vehicle brake disc cooling control apparatus based on grille control according to an embodiment;

reference numerals referred to in the above drawings are explained as follows:

600. a vehicle brake disc cooling control device based on grid control; 601. a first control module; 602. a temperature prediction module; 603. an execution module;

Detailed Description

In order to describe the possible application scenarios, technical principles, practical embodiments, and the like of the present application in detail, the following description is made with reference to the specific embodiments and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples and are not intended to limit the scope of protection of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "in various places in the specification are not necessarily all referring to the same embodiment, nor are they particularly limited to independence or relevance from other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in the embodiments may be combined in any manner to form a corresponding implementable technical solution.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains; the use of related terms herein is for the description of specific embodiments only and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a representation for describing a logical relationship between objects, which means that there may be three relationships, e.g., a and/or B, representing: there are three cases, a, B, and both a and B. In addition, the character "/" herein generally indicates that the front-to-back associated object is an "or" logical relationship.

In this application, terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, order, or sequence of such entities or operations.

Without further limitation, the use of the terms "comprising," "including," "having," or other like open-ended terms in this application are intended to cover a non-exclusive inclusion, such that a process, method, or article of manufacture that comprises a list of elements does not include additional elements in the process, method, or article of manufacture, but may include other elements not expressly listed or inherent to such process, method, or article of manufacture.

As in the understanding of the "examination guideline," the expressions "greater than", "less than", "exceeding", and the like are understood to exclude the present number in this application; the expressions "above", "below", "within" and the like are understood to include this number. Furthermore, in the description of the embodiments of the present application, the meaning of "a plurality of" is two or more (including two), and similarly, the expression "a plurality of" is also to be understood as such, for example, "a plurality of groups", "a plurality of" and the like, unless specifically defined otherwise.

In the description of the embodiments of the present application, spatially relative terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc., are used herein as terms of orientation or positional relationship based on the specific embodiments or figures, and are merely for convenience of description of the specific embodiments of the present application or ease of understanding of the reader, and do not indicate or imply that the devices or components referred to must have a particular position, a particular orientation, or be configured or operated in a particular orientation, and therefore are not to be construed as limiting of the embodiments of the present application.

Unless specifically stated or limited otherwise, in the description of the embodiments of the present application, the terms "mounted," "connected," "affixed," "disposed," and the like are to be construed broadly. For example, the "connection" may be a fixed connection, a detachable connection, or an integral arrangement; the device can be mechanically connected, electrically connected and communicated; it can be directly connected or indirectly connected through an intermediate medium; which may be a communication between two elements or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains according to the specific circumstances.

Referring to fig. 1 to 5, the present embodiment provides a vehicle brake disc cooling control method based on grid control. The grille is movably arranged at the front part of the vehicle, and when the grille is opened, air flow can flow into the rim and the brake disc of the vehicle through the grille; as shown in fig. 1, the airflow is shown when the grille is closed, and the airflow cannot pass through the grille to enter the vehicle interior. The grille comprises a plurality of grille sheets which are arranged in parallel, two ends of each grille sheet are connected with the front cabin of the vehicle in a transferring way through a rotating shaft, the grille comprises a driving motor, and the driving motor is connected with the grille sheets through connecting pieces such as a crank, so that the grille sheets are driven to be opened or closed. As shown in fig. 2, the airflow is shown in the airflow direction when the grille is opened, and the airflow can flow into the rim and the brake disc of the vehicle through the grille, so that the brake disc and the brake caliper of the vehicle are cooled.

As shown in fig. 3, the vehicle brake disc cooling control method based on grid control includes the following steps:

s301, reading the speed of a vehicle in real time, controlling the grid to be opened when the speed is larger than a first speed, and controlling the grid to be closed when the speed is smaller than a second speed;

s302, a temperature prediction model of a brake disc is established, and braking information of a vehicle is collected, wherein the braking information comprises braking times and braking force;

s303, the temperature prediction model predicts the temperature of the brake disc according to the braking information, the vehicle speed, the vehicle environment information and the state of the grid in preset time; and when the temperature of the brake disc is greater than a preset value, forcedly controlling the grid to be opened.

In step S301, the grille is opened or closed under speed control, and is kept open as much as possible in a medium-low speed scene, and the windage is reduced by closing as much as possible in a medium-high speed scene. The opening angle of the grille is proportional to the current vehicle speed when the vehicle is between the first vehicle speed and the second vehicle speed.

In one embodiment, the first vehicle speed is 60kph and the second vehicle speed is 30kph. The first vehicle speed and the second vehicle may be adjusted according to a specific vehicle model. For example, in one embodiment, the grille is kept fully open below vehicle speed 1 (30 kph), and the grille opening is closed as the vehicle speed increases between vehicle speed 1 and vehicle speed 2 (60 kph), and the grille is fully closed when vehicle speed 2 is reached, reducing the windage coefficient of the vehicle. When the vehicle is powered down (i.e., the vehicle is parked), the grille is closed.

In step S302, the temperature of the brake disc can be predicted by the temperature prediction model, so if it is detected that there is emergency braking or the brake disc is too high due to too frequent braking, the driving motor of the grid should be controlled to open the grid in time, and the brake disc is cooled. In step S302, the temperature prediction model is provided with information such as the vehicle weight of the vehicle, parameters of the brake system (including the clamp size, the brake disc size, the material, the type), and the like, and the temperature of the brake disc of the vehicle is predicted by combining the vehicle weight, the brake system and the brake information, the vehicle speed, the vehicle environment information, and the state of the grille through a test or artificial intelligence model.

In the embodiment, a temperature sensor is not required to be arranged in a brake system such as a brake disc and a brake caliper, the temperature of the brake disc can be predicted through a temperature prediction model, and the grid is forcibly controlled to be opened when necessary to cool the brake disc of the vehicle. At the moment, even if the vehicle speed is greater than the second vehicle speed, the grille is opened to cool the brake disc.

As shown in fig. 4, the braking model includes a temperature prediction model, in this embodiment, the temperature prediction model, the vehicle speed and the grid control of the braking disc are combined together, so that various driving scenarios are fully considered, geographic factors are added into the temperature model, when the braking pedal is frequently stepped on during low-speed running in urban working conditions, the grid is kept in an open state as much as possible, and good heat dissipation conditions of the braking disc are ensured; when the vehicle runs at a high speed, in order to reduce wind resistance, improve endurance and economy, the grille is kept in a closed state as much as possible, and when the temperature of the disc rises too fast or is too high, the grille is opened, so that air takes away heat of the brake disc, the temperature of the brake disc is reduced, and the braking reliability is ensured. Therefore, the wind resistance of the vehicle during high-speed running is effectively reduced, the temperature of the vehicle braking system is reduced, and the braking performance of the vehicle braking system is ensured.

In an embodiment, the vehicle brake disc cooling control method based on grid control further includes the steps of:

acquiring the current running road condition of the vehicle according to the electronic map and the vehicle positioning information, and adjusting the temperature prediction model into a mountain road mode if the vehicle is on a mountain road or a long downhill road section; the temperature prediction model calculates the braking demand of the vehicle in a period of time according to the current road condition of the vehicle in a mountain road mode, and predicts the temperature of the brake disc in combination with the braking demand. The braking demand is proportional to the weight of the vehicle, the speed of the vehicle, the length of the downhill slope and the gradient of the downhill slope, so that the braking demand of the vehicle under the current road condition can be calculated through the model. In this embodiment, considering that the frequency of the driver stepping on the brake pedal is more frequent when the vehicle is traveling on a mountain road, the temperature of the brake disc rises faster, and in this environment, the reduction of the wind resistance coefficient and the improvement of the economy should not be the primary consideration targets, and the reliability and stability of the braking should be ensured as much as possible. At any vehicle speed, the grille should be kept fully open.

In one embodiment, the grille is forcibly controlled to open in the mountain mode. Therefore, in this embodiment, in combination with data such as a high-precision map and a GPS, it is possible to intelligently determine whether the vehicle is on a mountain road, and if the vehicle is on a mountain road, the grille is kept fully open for dissipating heat from the brake disc, so as to improve the safety of mountain road driving. Fig. 5 is a schematic diagram showing a grid state corresponding to different states of the vehicle according to an embodiment.

In an embodiment, the method further comprises the step of:

the temperature prediction model acquires route navigation information of the vehicle, and predicts the speed of the vehicle in each road section and braking requirements according to the road conditions of the passing vehicle in the navigation information; and predicting the temperature of the brake disc of the vehicle in different road sections according to the vehicle speed and the braking demand, and starting the grille in advance and sending deceleration prompt information in advance when the temperature of the predicted brake disc is higher than a warning value.

In this embodiment, the temperature prediction model may cool the brake in advance according to the road condition in front of the vehicle, so as to further ensure the braking performance of the braking system. For example, when the temperature prediction model detects that a long downhill slope and a sharp turn are continuously generated 2 km in front of the vehicle, the temperature prediction model controls the grid to be opened in advance at the moment so as to cool the brake disc in advance, and the brake disc is in the lowest temperature state when the vehicle enters a downhill road section.

In one embodiment, the vehicle environment information includes an altitude at which the vehicle is located and an ambient temperature.

In this embodiment, the following conditions are fully considered when the temperature prediction model of the brake disc predicts the temperature: altitude, ambient temperature, vehicle speed, deceleration and braking times, so that the influence of factors such as altitude, ambient temperature and the like on the temperature prediction of the brake disc can be realized. Because the deceleration cannot accurately characterize the brake disc operating state due to the impact of the new energy vehicle energy recovery, in some embodiments, the master cylinder pressure and the energy recovery braking torque are also added to the temperature prediction model of the brake disc, and the temperature of the brake disc is predicted along with the parameters.

Referring to fig. 6, in another embodiment, a vehicle brake disc cooling control apparatus 600 based on grille control is provided. The grille is movably arranged at the front part of the vehicle, and when the grille is opened, air flow can flow into the rim and the brake disc of the vehicle through the grille; the vehicle brake disc cooling control device includes: a first control module 601, a temperature prediction module 602, and an execution module 603.

The first control module 601 is configured to read a vehicle speed of a vehicle in real time, control the grille to be opened when the vehicle speed is greater than a first vehicle speed, and control the grille to be closed when the vehicle speed is less than a second vehicle speed;

the temperature prediction module 602 is configured to establish a temperature prediction model of a brake disc, collect braking information of a vehicle, where the braking information includes a braking frequency and a braking force, and predict a temperature of the brake disc according to the braking information, the vehicle speed, vehicle environment information and a state of the grid in a preset time; and the execution module 603 is used for forcedly controlling the grid to be opened when the temperature of the brake disc is greater than a preset value.

In an embodiment, the temperature prediction module 602 is further configured to: acquiring the current running road condition of the vehicle according to the electronic map and the vehicle positioning information, and adjusting the temperature prediction model into a mountain road mode if the vehicle is on a mountain road or a long downhill road section; the temperature prediction model calculates the braking demand of the vehicle in a period of time according to the current road condition of the vehicle in a mountain road mode, and predicts the temperature of the brake disc in combination with the braking demand.

In an embodiment, the temperature prediction module 602 is further configured to:

the temperature prediction model acquires route navigation information of the vehicle, and predicts the speed of the vehicle in each road section and braking requirements according to the road conditions of the passing vehicle in the navigation information; and predicting the temperature of the brake disc of the vehicle in different road sections according to the vehicle speed and the braking demand, and starting the grille in advance and sending deceleration prompt information in advance when the temperature of the predicted brake disc is higher than a warning value.

Finally, it should be noted that, although the foregoing embodiments have been described in the text and the accompanying drawings of the present application, the scope of the patent protection of the present application is not limited thereby. All technical schemes generated by replacing or modifying equivalent structures or equivalent flows based on the essential idea of the application and by utilizing the contents recorded in the text and the drawings of the application, and the technical schemes of the embodiments are directly or indirectly implemented in other related technical fields, and the like, are included in the patent protection scope of the application.

Claims (10)

1. The vehicle brake disc cooling control method based on the grid control is characterized in that the grid is movably arranged at the front part of the vehicle, and when the grid is opened, air flow can flow into the rim and the brake disc of the vehicle through the grid; the method comprises the following steps:

reading the speed of a vehicle in real time, controlling the grid to be opened when the speed is larger than a first speed, and controlling the grid to be closed when the speed is smaller than a second speed;

establishing a temperature prediction model of a brake disc, and collecting braking information of a vehicle, wherein the braking information comprises braking times and braking force, and the temperature prediction model predicts the temperature of the brake disc according to the braking information, the vehicle speed, vehicle environment information and the state of the grid in preset time; and when the temperature of the brake disc is greater than a preset value, forcedly controlling the grid to be opened.

2. The grid control-based vehicle brake disc cooling control method according to claim 1, further comprising the step of:

acquiring the current running road condition of the vehicle according to the electronic map and the vehicle positioning information, and adjusting the temperature prediction model into a mountain road mode if the vehicle is on a mountain road or a long downhill road section; the temperature prediction model calculates the braking demand of the vehicle in a period of time according to the current road condition of the vehicle in a mountain road mode, and predicts the temperature of the brake disc in combination with the braking demand.

3. The vehicle brake disc cooling control method based on the grill control according to claim 2, wherein in the mountain road mode, the grill opening is forcibly controlled.

4. The grid control-based vehicle brake disc cooling control method according to claim 1, further comprising the step of:

the temperature prediction model acquires route navigation information of the vehicle, and predicts the speed of the vehicle in each road section and braking requirements according to the road conditions of the passing vehicle in the navigation information; and predicting the temperature of the brake disc of the vehicle in different road sections according to the vehicle speed and the braking demand, and starting the grille in advance and sending deceleration prompt information in advance when the temperature of the predicted brake disc is higher than a warning value.

5. The grid control-based vehicle brake rotor cooling control method of claim 1, wherein the vehicle environment information includes an altitude at which the vehicle is located and an ambient temperature.

6. The grid control-based vehicle brake disc cooling control method according to claim 1, wherein the first vehicle speed is 60kph and the second vehicle speed is 30kph.

7. The grid control-based vehicle brake disc cooling control method according to claim 6, wherein an opening angle of the grid is proportional to a current vehicle speed when the vehicle is between a first vehicle speed and the second vehicle speed.

8. The vehicle brake disc cooling control device based on grid control is characterized in that the grid is movably arranged at the front part of a vehicle, and when the grid is opened, air flow can flow into a rim and a brake disc of the vehicle through the grid; the vehicle brake disc cooling control device includes:

a first control module: the method comprises the steps of reading the speed of a vehicle in real time, controlling the grid to be opened when the speed is larger than a first speed, and controlling the grid to be closed when the speed is smaller than a second speed;

the temperature prediction module is used for establishing a temperature prediction model of the brake disc, collecting braking information of a vehicle, wherein the braking information comprises braking times and braking force, and predicting the temperature of the brake disc according to the braking information, the vehicle speed, vehicle environment information and the state of the grid in preset time; and

and the execution module is used for forcedly controlling the grid to be opened when the temperature of the brake disc is greater than a preset value.

9. The grid control-based vehicle brake disc cooling control device of claim 8, wherein the temperature prediction module is further configured to: acquiring the current running road condition of the vehicle according to the electronic map and the vehicle positioning information, and adjusting the temperature prediction model into a mountain road mode if the vehicle is on a mountain road or a long downhill road section; the temperature prediction model calculates the braking demand of the vehicle in a period of time according to the current road condition of the vehicle in a mountain road mode, and predicts the temperature of the brake disc in combination with the braking demand.

10. The grid control-based vehicle brake disc cooling control device of claim 9, wherein the temperature prediction module is further configured to:

the temperature prediction model acquires route navigation information of the vehicle, and predicts the speed of the vehicle in each road section and braking requirements according to the road conditions of the passing vehicle in the navigation information; and predicting the temperature of the brake disc of the vehicle in different road sections according to the vehicle speed and the braking demand, and starting the grille in advance and sending deceleration prompt information in advance when the temperature of the predicted brake disc is higher than a warning value.