Brake disc rust removal method and system, electronic equipment and medium

Abstract

The invention provides a brake disc rust removal method and system, electronic equipment and a medium, and relates to the technical field of vehicle safety control, and the brake disc rust removal method comprises the following steps: after a vehicle finishes a rust removal function for one time, obtaining the driving mileage of the vehicle in a preset time period, and setting a time trigger threshold value according to the driving mileage; setting a mileage trigger threshold by combining the driving mileage and the opening times and the opening duration of the windscreen wiper in a preset time period; and if the driving distance of the vehicle reaches the mileage triggering threshold value, the passing time reaches the time triggering threshold value and the wheel cylinder pressure is lower than the preset pressure value, the rust removal function is automatically started to conduct passive rust removal on the brake disc. The problem that in the prior art, the vehicle kinetic energy recovery efficiency is reduced due to the scheme that hydraulic braking is adopted for brake disc rust removal regularly is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle safety control, and in particular to a brake disc rust removal method, system, electronic equipment and medium. Background Art

[0002] At present, the active rust removal scheme for brake discs mainly adopts physical methods (such as brake disc grinding), chemical methods (such as acid solution washing) and rust removal systems. Some high-end models are equipped with active rust removal systems. If the vehicle is parked for a long time, the driver can turn on the active rust removal system and turn off kinetic energy recovery to actively remove rust; the passive rust removal scheme for brake discs is to use a passive rust removal system, mainly using hydraulic braking regularly to achieve the effect of brake disc rust removal. At present, the identification of brake disc rust mainly adopts regular manual inspection and sensor monitoring, and indirectly judges whether the brake disc rust appears by monitoring the working status of the brake disc.

[0003] However, the current technology has the following defects:

[0004] In the rust removal scheme, the physical and chemical treatment processes are relatively cumbersome, and the scheme is likely to cause damage to the brake disc, so in most cases, a rust removal system is used for rust removal. The existing active rust removal system actively removes rust by shutting down kinetic energy recovery;

[0005] In the passive rust removal system, kinetic energy recovery is periodically shut down and hydraulic braking is used to remove rust from the brake disc. However, this solution fails to take into account the identification of rust on the brake disc. The regular use of hydraulic braking to remove rust from the brake disc will cause a decrease in the vehicle's kinetic energy recovery efficiency. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a brake disc rust removal method, system, electronic equipment and medium, which solves the problem in the prior art that the regular use of hydraulic braking to remove rust from the brake disc will cause a decrease in the vehicle's kinetic energy recovery efficiency.

[0007] At least one embodiment of the present invention provides a brake disc rust removal method, comprising:

[0008] When the vehicle completes a rust removal function, the mileage of the vehicle in a preset time period is obtained, and a time trigger threshold is set according to the mileage;

[0009] A mileage trigger threshold is set based on the driving mileage and the number of times and duration of the wiper activation in a preset time period;

[0010] If the distance traveled by the vehicle reaches the mileage trigger threshold, the elapsed time reaches the time trigger threshold and the wheel cylinder pressure is lower than the preset pressure value, the rust removal function is automatically turned on to passively remove rust from the brake disc.

[0011] The technical solution disclosed in the present invention has at least the following beneficial effects:

[0012] The method identifies rust during the passive rust removal stage, and no longer performs brake disc rust removal on a single, regular basis. Instead, the passive rust removal function is activated after a comprehensive determination of the vehicle's mileage in a preset time period, namely, the owner's vehicle usage frequency, vehicle time status, wheel cylinder pressure status, and vehicle wiper status. This method takes the activation of the passive rust removal function into more comprehensive considerations, avoids untimely function triggering, and thereby reduces the vehicle's kinetic energy recovery efficiency.

[0013] In a brake disc rust removal method provided in one embodiment of the present invention, the method further comprises:

[0014] The current state of charge of the vehicle is obtained, and if the current state of charge is higher than a first preset value, the brake disc is passively derusted.

[0015] The technical solution disclosed in the present invention has at least the following beneficial effects:

[0016] This method determines the current charge state of the vehicle so that passive rust removal of the brake disc is allowed only when the charge state of the vehicle is higher than a first preset value, that is, in a higher state. At this time, kinetic energy recovery is in a lower range. Turning on the brake disc rust removal function can avoid affecting the energy recovery efficiency.

[0017] In a brake disc rust removal method provided in one embodiment of the present invention, the method further comprises:

[0018] The state of the brake pedal is obtained, and the brake pedal is in an inactive state, and the brake disc is passively derusted.

[0019] The technical solution disclosed in the present invention has at least the following beneficial effects:

[0020] In the above method, the brake disc rust removal is only allowed to be activated when the brake pedal is not depressed, so as to avoid the change in the feel of the brake pedal after the function is activated, which may affect the vehicle status and cause discomfort to the driver.

[0021] In a brake disc rust removal method provided in one embodiment of the present invention, the method further comprises:

[0022] The current yaw angular velocity and lateral acceleration of the vehicle are calculated, and when the yaw angular velocity is lower than a second preset value and the lateral acceleration is lower than a third preset value, the brake disc is passively derusted.

[0023] The technical solution disclosed in the present invention has at least the following beneficial effects:

[0024] By calculating the current yaw rate and lateral acceleration of the vehicle, and when the yaw rate is lower than the second preset value and the lateral acceleration is lower than the third preset value, the passive rust removal is performed to ensure that the vehicle is in a stable state, thereby improving the safety of the system.

[0025] In a brake disc rust removal method provided in one embodiment of the present invention, passive rust removal of the brake disc includes:

[0026] The brake energy recovery is turned off, and the brake disc is subjected to friction rust removal by the brake pad. When a preset condition is met, the current rust removal function is terminated.

[0027] The technical solution disclosed in the present invention has at least the following beneficial effects:

[0028] In the above method, when passive rust removal is performed, only the braking energy recovery in the kinetic energy recovery is turned off, while the coasting energy recovery in the kinetic energy recovery is not turned off, so as to avoid a large change in the driving feel of the vehicle and cause unnecessary risks.

[0029] In a brake disc rust removal method provided in one embodiment of the present invention, satisfying the preset conditions includes:

[0030] Acquiring a preset pressure interval in which the current pressure state of the wheel cylinder is located, determining a preset duration according to the preset pressure interval, and when the current pressure state of the wheel cylinder is in the preset pressure interval, maintaining the preset duration is considered to complete one rust removal, and storing the current number of completed rust removals;

[0031] When the number of completed rust removals reaches the preset number of rust removals, it is deemed that the preset condition is met, and the currently stored number of completed rust removals is reset.

[0032] The technical solution disclosed in the present invention has at least the following beneficial effects:

[0033] By storing the number of rust removal times, in various situations, for example, when the owner actively turns on the rust removal function, the number of rust removal times can also be counted, or the impact of poor rust removal effect caused by the accidental exit of the last passive rust removal can be eliminated.

[0034] In a brake disc rust removal method provided in one embodiment of the present invention, after a preset condition is met, the current rust removal function is terminated, including:

[0035] After completing the preset conditions, the state of the brake pedal is obtained, and the current yaw angular velocity and lateral acceleration of the vehicle are calculated. When the brake pedal is in an inactive state, and the yaw angular velocity is lower than the second preset value, and the lateral acceleration is lower than the third preset value, the current rust removal function is terminated.

[0036] The technical solution disclosed in the present invention has at least the following beneficial effects:

[0037] The present invention uses the condition of terminating the current rust removal function as when the brake pedal is in an inactive state, the yaw angular velocity is lower than a second preset value, and the lateral acceleration is lower than a third preset value. This ensures that the rust removal function is turned off only when the vehicle is in a stable condition and the brake pedal is not in use, thereby avoiding the risks caused by unnecessary changes in driving feel and improving the safety of the system.

[0038] The present invention also provides a brake disc rust removal system, comprising:

[0039] A first threshold value establishing unit, which, when the vehicle completes a rust removal function, obtains the mileage of the vehicle in a preset time period and sets a time trigger threshold value according to the mileage;

[0040] A second threshold establishing unit, combining the driving mileage and the number of times and duration of the windshield wiper activation in a preset time period, to set a mileage triggering threshold;

[0041] The rust removal trigger unit automatically turns on the rust removal function to passively remove rust from the brake disc if the distance traveled by the vehicle reaches the mileage trigger threshold, the elapsed time reaches the time trigger threshold, and the wheel cylinder pressure is lower than a preset pressure value.

[0042] The present invention also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on a terminal device, the terminal device executes a brake disc rust removal method as described above.

[0043] The present invention also provides an electronic device, comprising a memory, a processor, and a program stored in the memory and running on the processor, wherein the processor implements the above-mentioned brake disc rust removal method when executing the program. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 The present invention is a schematic flow chart of a method for removing rust from a brake disc;

[0045] Figure 2 It is a logical schematic diagram of active rust removal and passive rust removal of the present invention;

[0046] Figure 3 This is a schematic diagram of the action logic when the rust removal function is exited according to the present invention;

[0047] Figure 4 The present invention is a schematic flow chart of a brake disc rust removal system. DETAILED DESCRIPTION

[0048] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0049] Furthermore, those skilled in the art may combine and associate different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0050] The present invention provides a method for removing rust from a brake disc, please refer to Figure 1 As shown, including:

[0051] When the vehicle completes a rust removal function, the mileage of the vehicle in a preset time period is obtained, and a time trigger threshold is set according to the mileage;

[0052] A mileage trigger threshold is set based on the driving mileage and the number of times and duration of the wiper activation in a preset time period;

[0053] If the distance traveled by the vehicle reaches the mileage trigger threshold, the elapsed time reaches the time trigger threshold and the wheel cylinder pressure is lower than the preset pressure value, the rust removal function is automatically turned on to passively remove rust from the brake disc.

[0054] That is, first, the rust on the brake disc is identified. When the wheel cylinder pressure is not built up or the pressure is small within a certain vehicle mileage and vehicle time state, the driver considers that the brake disc has rust. When the vehicle wiper is turned on, the probability of rust on the brake disc will increase, and the rust on the brake disc can be appropriately determined in advance. For example, if the vehicle has traveled 3,000 kilometers within a preset time period of three months, if the mileage does not reach 3,000 kilometers within three months, the mileage trigger threshold can be lowered and the time trigger threshold can be increased. For example, the time trigger threshold is increased to five months, and the mileage trigger threshold is reduced to 1,500 kilometers, so as to adapt to drivers with various vehicle usage frequencies. When the wheel cylinder is not built up or the pressure is small, the rust on the brake disc is identified. If the wiper is turned on in this range, the mileage trigger threshold can be reduced, such as to 2,000 kilometers. The specific reduction in the mileage trigger threshold can be comprehensively determined based on the length of time the wiper is turned on and the number of times it is turned on;

[0055] The method identifies rust during the passive rust removal stage, and no longer performs brake disc rust removal on a single, regular basis. Instead, the passive rust removal function is activated after a comprehensive determination of the vehicle's mileage in a preset time period, namely, the owner's vehicle usage frequency, vehicle time status, wheel cylinder pressure status, and vehicle wiper status. This method takes the activation of the passive rust removal function into more comprehensive considerations, avoids untimely function triggering, and thereby reduces the vehicle's kinetic energy recovery efficiency.

[0056] Specifically, the method further includes:

[0057] The current state of charge of the vehicle is obtained, and if the current state of charge is higher than a first preset value, the brake disc is passively derusted.

[0058] When SOC (state of charge)>0.8, braking energy recovery is canceled; when 0.7≤SOC≤0.8, braking energy recovery is restricted by the maximum charging current allowed by the power battery; when SOC<0.7, braking energy recovery is not restricted by the maximum charging current allowed by the power battery. In this embodiment, SOC greater than about 0.7 is taken as a higher SOC state, and the specific data varies depending on the vehicle model.

[0059] This method determines the current charge state of the vehicle so that passive rust removal of the brake disc is allowed only when the charge state of the vehicle is higher than a first preset value, that is, in a higher state. At this time, kinetic energy recovery is in a lower range. Turning on the brake disc rust removal function can avoid affecting the energy recovery efficiency.

[0060] Specifically, the method further includes:

[0061] The state of the brake pedal is obtained, and the brake pedal is in an inactive state, and the brake disc is passively derusted.

[0062] In the above method, the brake disc rust removal is only allowed to be activated when the brake pedal is not depressed, so as to avoid the change in the feel of the brake pedal after the function is activated, which may affect the vehicle status and cause discomfort to the driver.

[0063] Specifically, the method further includes:

[0064] The current yaw angular velocity and lateral acceleration of the vehicle are calculated, and when the yaw angular velocity is lower than a second preset value and the lateral acceleration is lower than a third preset value, the brake disc is passively derusted.

[0065] By calculating the current yaw rate and lateral acceleration of the vehicle, and when the yaw rate is lower than the second preset value and the lateral acceleration is lower than the third preset value, the passive rust removal is performed to ensure that the vehicle is in a stable state, thereby improving the safety of the system.

[0066] Specifically, passive rust removal of brake discs includes:

[0067] The brake energy recovery is turned off, and the brake disc is subjected to friction rust removal by the brake pad. When a preset condition is met, the current rust removal function is terminated.

[0068] In the above method, when passive rust removal is performed, only the braking energy recovery in the kinetic energy recovery is turned off, while the coasting energy recovery in the kinetic energy recovery is not turned off, so as to avoid a large change in the driving feel of the vehicle and cause unnecessary risks.

[0069] Specifically, the prerequisites include:

[0070] Acquiring a preset pressure interval in which the current pressure state of the wheel cylinder is located, determining a preset duration according to the preset pressure interval, and when the current pressure state of the wheel cylinder is in the preset pressure interval, maintaining the preset duration is considered to complete one rust removal, and storing the current number of completed rust removals;

[0071] When the number of completed rust removals reaches the preset number of rust removals, it is deemed that the preset condition is met, and the currently stored number of completed rust removals is reset.

[0072] By storing the number of rust removal times, in various situations, for example, when the owner actively turns on the rust removal function, the number of rust removal times can also be counted, or the impact of poor rust removal effect caused by the accidental exit of the last passive rust removal can be eliminated.

[0073] Specifically, after the preset conditions are met, the current rust removal function is terminated, including:

[0074] After completing the preset conditions, the state of the brake pedal is obtained, and the current yaw angular velocity and lateral acceleration of the vehicle are calculated. When the brake pedal is in an inactive state, and the yaw angular velocity is lower than the second preset value, and the lateral acceleration is lower than the third preset value, the current rust removal function is terminated.

[0075] The present invention uses the condition of terminating the current rust removal function as when the brake pedal is in an inactive state, the yaw angular velocity is lower than a second preset value, and the lateral acceleration is lower than a third preset value. This ensures that the rust removal function is turned off only when the vehicle is in a stable condition and the brake pedal is not in use, thereby avoiding the risks caused by unnecessary changes in driving feel and improving the safety of the system.

[0076] In summary:

[0077] The rust removal method provided by the present invention is mainly aimed at automatically starting and removing rust when rust is identified on the brake disc without active operation by the driver; the rust identification in the passive rust removal scheme is mainly to identify the rust on the brake disc based on information such as wheel cylinder pressure and vehicle mileage;

[0078] Of course, when the passive rust removal function is not turned on, the driver can also manually turn on the active rust removal function to remove rust;

[0079] When active rust removal is required: After the driver finds rust on the brake disc, he will actively start the brake disc rust removal;

[0080] Please refer to here Figure 2 As shown, at this time, the following conditions must still be met:

[0081] Determine the vehicle's SOC status and start the brake disc rust removal function at a higher SOC. At this time, the kinetic energy recovery is in a lower range. Turning on the brake disc rust removal function can avoid affecting the energy recovery efficiency.

[0082] Determine the brake pedal status and start the brake disc rust removal when the brake pedal is not pressed, so as to avoid the change of the brake pedal feel after the function is turned on, which may affect the vehicle status and cause discomfort to the driver;

[0083] Judge the yaw rate and lateral acceleration to identify whether the vehicle is in a relatively stable driving environment;

[0084] After the driver actively starts the brake disc rust removal, the active rust removal function is turned on when the above conditions are met at the same time. After the function is turned on, the brake energy recovery is turned off. When the driver steps on the brake pedal, hydraulic braking is performed, increasing the contact time and number of contacts between the brake pad and the brake disc to achieve the rust removal effect.

[0085] In the passive rust removal provided by this method:

[0086] First, the brake disc rust is identified. If the distance traveled by the vehicle reaches the mileage trigger threshold, the elapsed time reaches the time trigger threshold, and the wheel cylinder pressure is lower than the preset pressure value, it is considered that the brake rust is identified. At this time, the vehicle SOC state (state of charge) is judged. At a higher SOC state, the brake disc rust removal is started. At this time, the kinetic energy recovery is in a lower range. Turning on the brake disc rust removal function can avoid affecting the energy recovery efficiency.

[0087] Determine the brake pedal status and start the brake disc rust removal when the brake pedal is not pressed, so as to avoid the change of the brake pedal feel after the function is turned on, which may affect the vehicle status and cause discomfort to the driver;

[0088] The yaw angular velocity and lateral acceleration are judged to identify whether the vehicle is in a relatively stable driving environment at this time. When the above conditions are met at the same time, the passive rust removal function is turned on. After the function is turned on, the brake energy recovery is turned off. When the driver steps on the brake pedal, hydraulic braking is performed to increase the contact time and number of contacts between the brake pad and the brake disc to achieve the effect of rust removal.

[0089] Please refer to here Figure 3 As shown, the following conditions must be met when exiting active or passive rust removal:

[0090] When active rust removal or passive rust removal is turned on, the active and passive rust removal functions are exited by detecting the wheel cylinder pressure. When the number of completed rust removals reaches the preset number of rust removals, it can be considered that the rust removal action has been completed at this time. Then, by judging the brake pedal, yaw deceleration and lateral acceleration and other conditions, the function is exited when the vehicle state is stable. For example, if the wheel cylinder pressure 1 is 5 bar, the wheel cylinder pressure 2 is 10 bar, and the wheel cylinder pressure 3 is 15 bar, when the preset pressure range is between 5 bar and 9 bar, the preset duration is that the pressure lasts for 2 seconds, and it is considered that the rust removal times are completed once. When the preset pressure range is between 10 bar and 14 bar, the preset duration is that the pressure lasts for 1.2 seconds, and it is considered that the rust removal times are completed once. When the preset pressure range is above 15 bar, the preset duration is that the pressure lasts for 0.8 seconds, and it is considered that the rust removal times are completed once. When the rust removal times reach the threshold (such as 10 times), it is considered that the rust removal function is completed once. Then, it is judged that the vehicle is in a stable state and the brake pedal is in an inactive state, and the rust removal function is exited.

[0091] Active and passive rust removal information storage strategy:

[0092] In order to avoid the passive rust removal function failing to be triggered at the right time after the active rust removal function is turned on, when the active rust removal function is completed, the vehicle time status and vehicle mileage of the passive rust removal are reset. For example, if the time threshold of the passive rust removal is three months and the mileage threshold is 3,000 kilometers, and the mileage reaches 1,000 kilometers within three months, but the driver turns on the active rust removal function at this time, after the active rust removal function is completed, the month and vehicle mileage when the active rust removal function is completed are stored when the power is turned off, and the month value and vehicle mileage are read together with the current month and vehicle mileage when the power is turned on next time, so as to recalculate the time and mileage, so as to make accurate judgments on the activation and exit of the function;

[0093] In order to avoid the driver turning off brake energy recovery when passive rust removal has not yet been turned on, the driver steps on the brake pedal at this time, and the wheel cylinder generates brake pressure, thereby "indirectly" achieving the effect of brake disc rust removal. At this time, the rust removal times are also counted for this situation. For example, if wheel cylinder pressure 1 is 5 bar, wheel cylinder pressure 2 is 10 bar, and wheel cylinder pressure 3 is 15 bar, when the preset pressure range is between 5 bar and 9 bar, the preset duration is 2 seconds of pressure duration, and it is considered that the rust removal times are completed once. When the preset pressure range is between 10 bar and 14 bar, the preset duration is 1.2 seconds of pressure duration, and it is considered that the rust removal is completed once. The number of rust removals is counted each time the vehicle is driven. If the rust removal threshold is not reached during the current driving cycle, the number of rust removals can be stored when the power is turned off. The number of rust removals is read at the next power-on. The number of rust removals is accumulated with the number of rust removals in the current cycle until the rust removal threshold is reached. At this time, it is considered that the rust removal has been completed. At the same time, the month when the rust removal is completed and the vehicle mileage are stored. When the vehicle is powered on next time, the month and the vehicle mileage are read and calculated until the time trigger threshold (such as three months) and the vehicle mileage trigger threshold (3,000 kilometers) are reached before the passive rust removal function is judged.

[0094] When active and passive rust removal is in progress, the number of rust removal times will be counted. If the rust removal times threshold is not reached in the current driving cycle, it is considered that the rust removal has not been completed. When the vehicle is powered off, the current rust removal times will be stored, and the active and passive rust removal functions will continue to be turned on the next time the power is turned on until the rust removal times reach the rust removal threshold. The rust removal function will be exited after completion.

[0095] This method takes the vehicle's SOC state into consideration, and turns on the function when the vehicle's kinetic energy recovery is in an inefficient range, which can improve the vehicle's energy recovery efficiency. At the same time, this method only turns off brake energy recovery when the brake disc rust removal function is activated, and does not turn off the vehicle's coasting energy recovery. The beneficial effect of this method is that it will not cause the vehicle to coast at an excessive speed when the function is turned on, thereby causing changes in the vehicle's driving experience. Furthermore, the brake pedal state is taken into consideration, and the function is entered when the driver does not step on the brake pedal, avoiding the uneven feel of the brake pedal when the electric recovery is turned off.

[0096] Rust marks are identified during the passive rust removal stage. Instead of simply performing brake disc rust removal on a regular basis, the passive rust removal function is activated after comprehensive judgment of vehicle mileage, vehicle time status, wheel cylinder pressure status, and vehicle wiper status. This method takes a more comprehensive approach to the activation of the passive rust removal function, avoiding untimely function triggering that may reduce vehicle energy recovery efficiency.

[0097] The number of active and passive rust removal times is stored, and the processing when the active and passive rust removal functions are integrated is comprehensively considered. At the same time, the vehicle time status, vehicle mileage and number of rust removal times are reasonably judged and stored, so that the function can be entered and exited at a more reasonable time.

[0098] The present invention also provides a brake disc rust removal system, please refer to Figure 4 As shown, including:

[0099] A first threshold value establishing unit, which, when the vehicle completes a rust removal function, obtains the mileage of the vehicle in a preset time period and sets a time trigger threshold value according to the mileage;

[0100] A second threshold establishing unit, combining the driving mileage and the number of times and duration of the windshield wiper activation in a preset time period, to set a mileage triggering threshold;

[0101] The rust removal trigger unit automatically turns on the rust removal function to passively remove rust from the brake disc if the distance traveled by the vehicle reaches the mileage trigger threshold, the elapsed time reaches the time trigger threshold, and the wheel cylinder pressure is lower than a preset pressure value.

[0102] Furthermore, the rust removal trigger unit also includes:

[0103] The current state of charge of the vehicle is obtained, and if the current state of charge is higher than a first preset value, the brake disc is passively derusted.

[0104] Furthermore, the rust removal trigger unit also includes:

[0105] The state of the brake pedal is obtained, and the brake pedal is in an inactive state, and the brake disc is passively derusted.

[0106] Furthermore, the rust removal trigger unit also includes:

[0107] The current yaw angular velocity and lateral acceleration of the vehicle are calculated, and when the yaw angular velocity is lower than a second preset value and the lateral acceleration is lower than a third preset value, the brake disc is passively derusted.

[0108] Furthermore, the rust removal trigger unit includes:

[0109] The brake energy recovery is turned off, and the brake disc is subjected to friction rust removal by the brake pad. When a preset condition is met, the current rust removal function is terminated.

[0110] Furthermore, in the rust removal trigger unit, satisfying the preset conditions includes:

[0111] Acquiring a preset pressure interval in which the current pressure state of the wheel cylinder is located, determining a preset duration according to the preset pressure interval, and when the current pressure state of the wheel cylinder is in the preset pressure interval, maintaining the preset duration is considered to complete one rust removal, and storing the current number of completed rust removals;

[0112] When the number of completed rust removals reaches the preset number of rust removals, it is deemed that the preset condition is met, and the currently stored number of completed rust removals is reset.

[0113] Furthermore, in the rust removal trigger unit, after the preset conditions are met, the current rust removal function is terminated, including:

[0114] After completing the preset conditions, the state of the brake pedal is obtained, and the current yaw angular velocity and lateral acceleration of the vehicle are calculated. When the brake pedal is in an inactive state, and the yaw angular velocity is lower than the second preset value, and the lateral acceleration is lower than the third preset value, the current rust removal function is terminated.

[0115] The present invention also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on a terminal device, the terminal device executes a brake disc rust removal method as described above.

[0116] The present invention also provides an electronic device, comprising a memory, a processor, and a program stored in the memory and running on the processor, wherein the processor implements the above-mentioned brake disc rust removal method when executing the program.

[0117] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for removing rust from a brake disc, characterized in that: include: When the vehicle completes a rust removal function, the mileage of the vehicle in a preset time period is obtained, and a time trigger threshold is set according to the mileage; A mileage trigger threshold is set based on the driving mileage and the number of times and duration of the wiper activation in a preset time period; If the distance traveled by the vehicle reaches the mileage trigger threshold, the elapsed time reaches the time trigger threshold and the wheel cylinder pressure is lower than the preset pressure value, the rust removal function is automatically turned on to passively remove rust from the brake disc.

2. A brake disc rust removal method according to claim 1, characterized in that: The method further includes: The current state of charge of the vehicle is obtained, and if the current state of charge is higher than a first preset value, the brake disc is passively derusted.

3. A brake disc rust removal method according to claim 2, characterized in that: The method further includes: The state of the brake pedal is obtained, and the brake pedal is in an inactive state, and the brake disc is passively derusted.

4. A brake disc rust removal method according to claim 3, characterized in that: The method further includes: The current yaw angular velocity and lateral acceleration of the vehicle are calculated, and when the yaw angular velocity is lower than a second preset value and the lateral acceleration is lower than a third preset value, the brake disc is passively derusted.

5. A brake disc rust removal method according to claim 1, characterized in that: Passive rust removal of brake discs includes: The brake energy recovery is turned off, and the brake disc is subjected to friction rust removal by the brake pad. When a preset condition is met, the current rust removal function is terminated.

6. A brake disc rust removal method according to claim 5, characterized in that: Meeting the pre-conditions includes: Acquiring a preset pressure interval in which the current pressure state of the wheel cylinder is located, determining a preset duration according to the preset pressure interval, and when the current pressure state of the wheel cylinder is in the preset pressure interval, maintaining the preset duration is considered to complete one rust removal, and storing the current number of completed rust removals; When the number of completed rust removals reaches the preset number of rust removals, it is deemed that the preset condition is met, and the currently stored number of completed rust removals is reset.

7. A brake disc rust removal method according to claim 6, characterized in that: After the preset conditions are met, the current rust removal function ends, including: After completing the preset conditions, the state of the brake pedal is obtained, and the current yaw angular velocity and lateral acceleration of the vehicle are calculated. When the brake pedal is in an inactive state, and the yaw angular velocity is lower than the second preset value, and the lateral acceleration is lower than the third preset value, the current rust removal function is terminated.

8. A brake disc rust removal system, characterized in that: include: A first threshold value establishing unit, which, when the vehicle completes a rust removal function, obtains the mileage of the vehicle in a preset time period and sets a time trigger threshold value according to the mileage; A second threshold establishing unit, combining the driving mileage and the number of times and duration of the windshield wiper activation in a preset time period, to set a mileage triggering threshold; The rust removal trigger unit automatically turns on the rust removal function to passively remove rust from the brake disc if the distance traveled by the vehicle reaches the mileage trigger threshold, the elapsed time reaches the time trigger threshold, and the wheel cylinder pressure is lower than a preset pressure value.

9. An electronic device comprising a memory, a processor, and a program stored in the memory and running on the processor, characterized in that: When the processor executes the program, a brake disc rust removal method as described in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device executes a brake disc rust removal method as described in any one of claims 1 to 7.

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