Brake disc rust removal method and device, storage medium, vehicle controller and vehicle

Abstract

The invention provides a brake disc rust removal method and device, a storage medium, a vehicle controller and a vehicle, according to the brake disc rust removal method, the rust amount of a vehicle brake disc is obtained in response to the fact that an accelerator pedal is switched from a first state to a second state, the opening degree of the accelerator pedal in the second state is zero, and the rust amount of the vehicle brake disc is obtained. The opening degree of the accelerator pedal in the first state is larger than zero, the hydraulic braking force corresponding to the kinetic energy recovery strength is generated through the hydraulic braking system on the basis of the corrosion amount of the brake disc, and the problem that the braking performance of the vehicle is reduced due to corrosion of the brake disc can be solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a method, apparatus, storage medium, vehicle controller, and vehicle for removing rust from brake discs. Background Technology

[0002] Regenerative braking refers to the technology that converts the mechanical energy (kinetic energy) of a vehicle into other forms of energy for recovery and reuse when the vehicle decelerates or brakes.

[0003] As more and more electric vehicles are introduced to the market, most of them are equipped with regenerative braking. When the regenerative braking function is activated, the vehicle's inertial kinetic energy and the electric motor's power generation capacity are used to convert the vehicle's kinetic energy in the non-acceleration state into electrical energy and store it in the vehicle's battery. This reduces energy waste and improves the vehicle's fuel efficiency and driving range.

[0004] However, for vehicles equipped with regenerative braking, the increased frequency of regenerative braking leads to a decrease in the frequency of hydraulic braking, which in turn reduces the operating frequency of the brake discs and causes them to corrode. Brake disc corrosion affects the vehicle's braking performance, and consequently, driving safety. Summary of the Invention

[0005] Based on this, the present disclosure provides a method, apparatus, storage medium, vehicle controller, and vehicle for removing rust from brake discs. By using this method, when the driver changes the accelerator pedal opening and triggers the kinetic energy recovery function, the vehicle brake disc can be derusted by generating a hydraulic braking force corresponding to the intensity of kinetic energy recovery, thus solving the problem of reduced vehicle braking performance caused by brake disc corrosion.

[0006] On one hand, the present invention provides a method for removing rust from brake discs, applicable to vehicles equipped with kinetic energy recovery functions, the method comprising:

[0007] In response to the accelerator pedal switching from a first state to a second state, the amount of corrosion on the vehicle's brake disc is obtained. In the second state, the accelerator pedal opening is zero, while in the first state, the accelerator pedal opening is greater than zero.

[0008] Based on the amount of corrosion on the brake disc, a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated through the hydraulic braking system.

[0009] Furthermore, in some embodiments, the generation of hydraulic braking force corresponding to the kinetic energy recovery intensity through the hydraulic braking system based on the amount of corrosion of the brake disc includes:

[0010] If the amount of corrosion on the brake disc is greater than a preset corrosion threshold, a hydraulic braking force corresponding to the intensity of kinetic energy recovery will be generated through the hydraulic braking system.

[0011] Furthermore, in some embodiments, the method further includes:

[0012] If the amount of corrosion on the brake disc is less than or equal to a preset corrosion threshold, the motor is controlled to generate a reverse motor torque corresponding to the kinetic energy recovery intensity.

[0013] Furthermore, in some embodiments, the generation of hydraulic braking force corresponding to the intensity of kinetic energy recovery via the hydraulic braking system includes:

[0014] Determine the reverse motor torque corresponding to the kinetic energy recovery intensity, and determine the motor power corresponding to the reverse motor torque;

[0015] The hydraulic braking system is controlled to generate a hydraulic braking force of the same magnitude as the electric motor's power.

[0016] Furthermore, in some embodiments, after generating the hydraulic braking force corresponding to the kinetic energy recovery intensity through the hydraulic braking system, the method further includes:

[0017] The amount of rust removal is calculated based on the hydraulic braking force and the duration of hydraulic braking.

[0018] The amount of rust on the brake disc is updated based on the amount of rust removed.

[0019] Furthermore, in some embodiments, the method further includes:

[0020] When the amount of corrosion on the brake disc is reduced to zero, the hydraulic braking force is reduced according to a preset gradient, and the reverse motor torque is increased according to a preset gradient until the reverse motor torque corresponding to the kinetic energy recovery intensity is obtained.

[0021] On the other hand, the present invention provides a brake disc rust removal device, comprising:

[0022] The monitoring module is used to obtain the amount of rust on the vehicle's brake disc in response to the accelerator pedal switching from a first state to a second state, wherein the accelerator pedal opening in the first state is greater than the accelerator pedal opening in the second state.

[0023] The rust removal module is used to generate hydraulic braking force corresponding to the intensity of kinetic energy recovery through the hydraulic braking system based on the amount of rust on the brake disc.

[0024] On the other hand, the present invention provides a storage medium storing a computer program adapted to be loaded by a processor and to execute the steps of the above-described method.

[0025] On the other hand, the present invention also provides a vehicle controller, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to execute the steps of the method described above.

[0026] On the other hand, the present invention also provides a vehicle including the above-described brake disc rust removal device or vehicle controller.

[0027] According to the brake disc rust removal method provided by the present invention, in response to the accelerator pedal switching from a first state to a second state, the amount of rust on the vehicle's brake disc is obtained. The accelerator pedal opening in the first state is greater than that in the second state. Based on the amount of rust on the brake disc, a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated through the hydraulic braking system. That is, when the driver changes the accelerator pedal opening and triggers the kinetic energy recovery function, the rust removal of the vehicle's brake disc can be achieved by generating a hydraulic braking force corresponding to the intensity of kinetic energy recovery, thus solving the problem of decreased vehicle braking performance caused by brake disc rust.

[0028] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0029] Figure 1 A schematic flowchart of a brake disc rust removal method provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram illustrating the variation of motor torque and hydraulic braking force with accelerator pedal opening, provided as an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram illustrating the variation of motor torque and hydraulic braking force with accelerator pedal opening, provided as an embodiment of the present invention.

[0032] Figure 4 A schematic flowchart of a brake disc rust removal method provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram illustrating the variation of motor torque and hydraulic braking force with accelerator pedal opening, provided as an embodiment of the present invention.

[0034] Figure 6 A system architecture diagram for implementing a brake disc rust removal method is provided in an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of a brake disc rust removal device provided in an embodiment of the present invention;

[0036] Figure 8This is a schematic diagram of the structure of a vehicle controller provided in an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0038] In the description of one or more embodiments of the present invention, the term "comprising" and similar terms should be understood as open-ended inclusion, i.e., "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0039] Currently, vehicle braking methods can be mainly divided into two types: one is regenerative braking based on motor reversal, which can convert the vehicle's kinetic energy into electrical energy for storage during the braking process, thus realizing energy recovery; the other is hydraulic braking based on a hydraulic braking system, which is non-regenerative braking. Hydraulic braking applies braking hydraulic pressure through a hydraulic actuator to drive the brake caliper to clamp the brake disc, and controls the vehicle's deceleration and braking based on the friction between the brake pads and the brake disc.

[0040] Regenerative braking, also known as energy recovery, can be activated when a vehicle is coasting, decelerating, or braking. It converts the vehicle's kinetic energy into electrical energy for storage.

[0041] For vehicles equipped with energy recovery systems, the increased frequency of regenerative braking by the electric motor leads to a significant decrease in the frequency of hydraulic braking. This, in turn, reduces the operating frequency of the brake discs and causes them to corrode. Brake disc corrosion not only affects the vehicle's appearance but also reduces braking performance, ultimately compromising driving safety.

[0042] Based on this, the present invention proposes a method for removing rust from brake discs. This method can remove rust from vehicle brake discs by generating hydraulic braking force corresponding to the intensity of kinetic energy recovery when the driver changes the accelerator pedal opening and triggers the kinetic energy recovery function. This solves the problem of reduced vehicle braking performance caused by brake disc corrosion and improves the vehicle's aesthetics and braking performance during braking.

[0043] Please see Figure 1This is a schematic flowchart illustrating a brake disc rust removal method provided in an embodiment of the present invention. The following section focuses on... Figure 1 The process shown is described in detail. The brake disc rust removal method may specifically include the following steps:

[0044] Step S102: In response to the accelerator pedal switching from the first state to the second state, the amount of corrosion on the vehicle brake disc is obtained. The accelerator pedal opening is zero in the second state and greater than zero in the first state.

[0045] The accelerator pedal is used to control vehicle speed. By pressing or releasing the accelerator pedal, the driver can control the vehicle's speed. Accelerator pedal opening refers to the depth to which the driver presses the accelerator pedal, corresponding to the driver's request for torque. When the accelerator pedal opening is zero, it indicates that the driver has not pressed the accelerator pedal, and the driver's request for vehicle torque is zero. When the accelerator pedal opening is greater than zero, it indicates that the driver has pressed the accelerator pedal, and the accelerator pedal opening corresponds to the driver's requested acceleration torque value.

[0046] In this embodiment of the invention, the state of the accelerator pedal is monitored in real time during driving, and the amount of corrosion of the vehicle brake disc is obtained in real time when the accelerator pedal is detected to switch from the first state to the second state.

[0047] In the second state, the accelerator pedal opening is zero, while in the first state, the accelerator pedal opening is greater than zero. That is, the second state is the fully released state where the accelerator pedal is not depressed, and the first state is the state where the accelerator pedal is depressed. When the accelerator pedal is in the first state, the vehicle's powertrain outputs drive torque according to the accelerator pedal opening, driving the vehicle to accelerate or maintain a constant speed. When the accelerator pedal is in the second state, the vehicle's powertrain does not output drive torque, and the vehicle coasts. Switching the accelerator pedal from the first state to the second state represents the transition from acceleration to coasting in normal driving.

[0048] The amount of rust on the brake disc refers to the amount of rust that forms on the surface of the brake disc when it is idle for a long time due to oxidation caused by moisture and oxygen in the air. In this embodiment of the invention, the amount of rust on the brake disc can be calculated based on the length of time the brake disc is idle, and the amount of rust on the brake disc can be obtained when the accelerator pedal switches from the first state to the second state.

[0049] It should be noted that the amount of brake disc corrosion is directly proportional to the duration of brake disc idleness; that is, the longer the brake disc is idle, the more rust forms on its surface, and the more severe the corrosion. Brake disc idleness time refers to the continuous duration during which the brake disc remains unused. By determining the brake disc idleness time, the current amount of brake disc corrosion can be quantified, yielding the brake disc corrosion amount. In this embodiment of the invention, a brake disc corrosion amount calculation unit is pre-installed in the vehicle or brake disc rust removal device. This unit can estimate the current brake disc corrosion amount in real time based on the brake disc idleness time.

[0050] Optionally, the time interval between the vehicle's most recent power-off and the current power-on can be used as the brake disc idle time. After the vehicle is powered off, it is stationary, and the brake discs are idle. During the time interval between the most recent power-off and the current power-on, brake disc corrosion occurs. Specifically, after the vehicle is powered off, the power-off time is recorded. After the vehicle is powered on, the brake disc idle time is determined based on the time interval between the recorded power-off time and the current power-on time.

[0051] Optionally, the time interval between the last brake disc application end time and the current time can be used as the brake disc idle time. Specifically, the working status signal of the hydraulic actuator used for hydraulic braking can be detected, and the time when the hydraulic actuator exits hydraulic braking can be used as the last brake disc application end time. This end time is recorded, and then when determining the brake disc idle time, the time interval between the last brake disc application end time and the current time can be used as the brake disc idle time.

[0052] Optionally, the amount of brake disc corrosion can be calculated based on the idle time of the brake disc. Specifically, this can be done by pre-constructing a correlation equation between the idle time of the brake disc and the amount of brake disc corrosion, and then determining the amount of brake disc corrosion based on the idle time of the brake disc. The idle time of the brake disc is directly proportional to the amount of brake disc corrosion; that is, the longer the brake disc is idle, the more rust will form on the surface of the brake disc, and the more severe the corrosion.

[0053] Furthermore, the amount of brake disc corrosion can also be related to weather and ambient humidity. After determining the idle time of the brake disc, the corresponding amount of brake disc corrosion is determined based on the idle time and weather and humidity information during the idle period. Specifically, the amount of brake disc corrosion is directly proportional to the idle time and air humidity; the longer the idle time and the higher the air humidity, the more rust forms on the brake disc surface, and the more severe the corrosion.

[0054] In one feasible implementation, the calculation of brake disc corrosion amount can be specifically as follows: determine the real-time corrosion rate at the current moment based on real-time environmental information; calculate the real-time brake disc corrosion amount based on the real-time corrosion rate and the brake disc idle time.

[0055] The real-time corrosion rate refers to the rate at which the amount of rust on the brake disc increases over time. The real-time corrosion rate changes with changes in current environmental information, including but not limited to air humidity and oxygen concentration.

[0056] In one feasible implementation, real-time air humidity and oxygen concentration information are acquired using an ambient humidity sensor and an oxygen concentration sensor, and then the real-time corrosion rate under the current environmental conditions is determined based on the air humidity and oxygen concentration information. The real-time corrosion rate is directly proportional to both air humidity and oxygen concentration. Furthermore, the real-time amount of brake disc corrosion can be calculated based on the real-time corrosion rate and the brake disc idle time.

[0057] In one feasible implementation, the real-time brake disc corrosion amount is calculated based on the real-time corrosion rate and the brake disc idle time. Specifically, this can be achieved by integrating the product of the real-time corrosion rate and the square of the time to obtain the brake disc corrosion amount. The formula is as follows:

[0058]

[0059] Where t0 is the starting time of brake disc idleness, t1 is the current time, σ is the real-time corrosion rate, and Q is the amount of brake disc corrosion generated during the idle time of brake disc from the starting time of brake disc idleness to the current time.

[0060] Step S104: Based on the amount of corrosion of the brake disc, a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated through the hydraulic braking system.

[0061] In this embodiment of the invention, when the accelerator pedal is detected to switch from the first state to the second state, the real-time amount of corrosion of the vehicle's brake disc is obtained, and then, based on the amount of corrosion of the brake disc at this time, a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated through the hydraulic braking system.

[0062] In one feasible implementation, when the amount of rust on the brake disc is not zero, it indicates that the vehicle's brake disc is rusted. At this time, a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated by the hydraulic braking system to perform frictional rust removal on the brake disc based on hydraulic braking.

[0063] It should be noted that in the relevant technology, when the accelerator pedal switches from the first state to the second state, that is, when the vehicle switches from an acceleration state to a coasting state, the vehicle's energy recovery function is triggered. During the coasting period, a portion of the vehicle's coasting kinetic energy is converted into electrical energy and stored by generating reverse motor torque. See also... Figure 2 , Figure 2 This diagram illustrates the changes in vehicle motor torque and hydraulic braking force as the vehicle transitions from acceleration to coasting. Figure 2 Among them, Pedal-T shows the relationship between accelerator pedal opening and time, Motor torque-T shows the relationship between motor torque and time, and Hydraulic-T shows the relationship between hydraulic braking force and time. Figure 2 During the time interval 0-t1, the accelerator pedal is in the first state with an opening greater than zero. During this period, the motor torque is the positive motor torque corresponding to the accelerator pedal, which is used to drive the vehicle to accelerate. The hydraulic braking force is zero. At time t1, the accelerator pedal opening changes from the first state to the second state with an opening less than zero. At this time, in response to the change in accelerator pedal opening being zero, the kinetic energy recovery function is activated. The motor torque changes from the positive motor torque to the reverse motor torque corresponding to the intensity of kinetic energy recovery, so as to realize the energy recovery from kinetic energy to electrical energy. During this period, the hydraulic braking force is always zero, and the brake disc cannot be derusted.

[0064] In this embodiment of the invention, when the vehicle's brake disc is corroded, based on the amount of corrosion, no reverse motor torque is generated when the accelerator pedal opening changes to zero. Instead, a hydraulic braking force corresponding to the kinetic energy recovery intensity is generated to perform frictional rust removal on the brake disc through hydraulic braking. Furthermore, the hydraulic braking force corresponding to the kinetic energy recovery intensity can simulate the reverse motor torque, allowing the vehicle to have the same driving experience during brake disc rust removal as during energy recovery. See details... Figure 3 That is, at time t1 when the accelerator pedal opening changes to zero, the motor torque changes to zero and generates a hydraulic braking force corresponding to the intensity of kinetic energy recovery. This enables the brake disc to be rubbed and rusted through hydraulic braking. This hydraulic braking force is the same as the regenerative braking force brought by the reverse motor torque, so that the vehicle has the same driving experience when performing brake disc rust removal as when energy recovery is performed.

[0065] To further clarify, the energy recovery intensity and the reverse motor torque are positively correlated; the stronger the energy recovery intensity, the greater the reverse motor torque. The energy recovery intensity during vehicle coasting can be preset, and the vehicle can preset multiple levels of energy recovery intensity for the driver to select and set. Each level of energy recovery intensity corresponds to a reverse motor torque value.

[0066] In one embodiment, a preset corrosion threshold is established. In response to the accelerator pedal switching from a first state to a second state, the corrosion level of the vehicle's brake disc is acquired. When the corrosion level of the brake disc exceeds the preset corrosion threshold, a hydraulic braking force corresponding to the kinetic energy recovery intensity is generated through the hydraulic braking system.

[0067] In this embodiment, by setting a preset rust threshold, the hydraulic braking system generates a hydraulic braking force corresponding to the kinetic energy recovery intensity only when the rust on the brake disc exceeds the preset rust threshold, so as to remove rust from the brake disc. This method can avoid the vehicle from frequently needing to remove rust from the brake disc.

[0068] Furthermore, if the amount of corrosion on the brake disc is less than or equal to a preset corrosion threshold, the control motor generates a reverse motor torque corresponding to the intensity of kinetic energy recovery. Kinetic energy recovery is then performed based on this reverse motor torque.

[0069] Furthermore, the hydraulic braking system generates a hydraulic braking force corresponding to the intensity of kinetic energy recovery. Specifically, this can be achieved by determining the reverse motor torque corresponding to the intensity of kinetic energy recovery, determining the electric motor power corresponding to the reverse motor torque, and controlling the hydraulic braking system to generate a hydraulic braking force of the same magnitude as the electric motor power.

[0070] In one embodiment, after generating a hydraulic braking force corresponding to the intensity of kinetic energy recovery through the hydraulic braking system, the amount of rust removal is calculated based on the hydraulic braking force and the duration of hydraulic braking during vehicle coasting, and the amount of rust on the brake disc is updated based on the amount of rust removal.

[0071] Rust removal amount refers to the amount of rust removed by the friction of the brake discs through hydraulic braking during vehicle coasting. Hydraulic braking duration refers to the duration from the generation of hydraulic braking force after coasting to the present moment.

[0072] Understandably, during coasting, the hydraulic braking force generated by the hydraulic braking system is constant. The amount of rust removal is positively correlated with the duration of hydraulic braking force. The amount of rust removal can be calculated based on the magnitude of the hydraulic braking force and the duration of hydraulic braking. Then, the amount of rust removal is updated in real time based on the amount of rust removal. If the rust cannot be completely removed during this coasting, the accuracy of the amount of rust removal is ensured by updating the amount of rust removal in real time, thus ensuring the effectiveness of rust removal during the next coasting.

[0073] Optionally, a relationship equation or model can be preset between hydraulic braking force, hydraulic braking duration, and rust removal amount to calculate the corresponding rust removal amount based on the hydraulic braking force and braking duration.

[0074] In one embodiment, please refer to Figure 4 This is a schematic flowchart of a brake disc rust removal method provided in an embodiment of the present invention. Figure 4 As shown, it includes the following steps:

[0075] Step S202: In response to the accelerator pedal switching from the first state to the second state, the amount of corrosion on the vehicle's brake disc is obtained. The accelerator pedal opening is zero in the second state and greater than zero in the first state.

[0076] Step S204: If the amount of corrosion on the brake disc is greater than the preset corrosion threshold, a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated through the hydraulic braking system.

[0077] Step S206: If the amount of corrosion on the brake disc is less than or equal to the preset corrosion threshold, then control the motor to generate a reverse motor torque corresponding to the intensity of kinetic energy recovery.

[0078] Step S208: Calculate the amount of rust removal based on the hydraulic braking force and the duration of hydraulic braking;

[0079] Step S210: Update the amount of rust on the brake disc based on the amount of rust removed;

[0080] In step S212, when the amount of corrosion on the brake disc is reduced to zero, the hydraulic braking force is reduced according to a preset gradient, and the reverse motor torque is increased according to a preset gradient until the reverse motor torque corresponding to the kinetic energy recovery intensity is obtained.

[0081] During vehicle coasting, when hydraulic braking is used to remove rust from the brake disc, the amount of rust removed is calculated based on the magnitude of the hydraulic braking force and the duration of hydraulic braking. This calculated amount of rust removal is then used to update the brake disc corrosion level in real time. In this embodiment of the invention, when the brake disc corrosion level drops to zero and the vehicle is still coasting, the hydraulic braking force is reduced according to a preset gradient, and the reverse motor torque is increased according to a preset gradient until a reverse motor torque corresponding to the kinetic energy recovery intensity is obtained. That is, the hydraulic braking force is gradually canceled, and a reverse motor torque corresponding to the kinetic energy recovery intensity is generated to recover kinetic energy and improve kinetic energy recovery efficiency. Please refer to [link to previous text]. Figure 5 This is a schematic diagram illustrating the variation of motor torque and hydraulic braking force with accelerator pedal opening, provided by an embodiment of the present invention. Figure 5 As shown, Pedal-T illustrates the relationship between accelerator pedal opening and time, Motor torque-T illustrates the relationship between motor torque and time, and Hydraulic-T illustrates the relationship between hydraulic braking force and time. Figure 5During the time interval 0-t1, the accelerator pedal is in the first state with an opening greater than zero. During this period, the motor torque is the positive motor torque corresponding to the accelerator pedal, used to drive the vehicle to accelerate, and the hydraulic braking force is zero. At time t1, the accelerator pedal opening switches from the first state to the second state with an opening less than zero. At this time, in response to the change in accelerator pedal opening being zero, the kinetic energy recovery function is activated. At the same time, it is detected that the amount of rust on the brake disc is greater than the preset rust threshold. At this time, the motor torque changes from the positive motor torque to zero, and a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated. During the period from t1 to t2, the brake disc is rubbed and rust is removed through hydraulic braking. At time t2, it is detected that the amount of rust on the brake disc has decreased to zero. At this time, the hydraulic braking force is reduced according to the preset gradient, and the reverse motor torque is increased according to the preset gradient until the reverse motor torque corresponding to the intensity of kinetic energy recovery is obtained. As shown in the figure, during the period from time t2 to t3, kinetic energy recovery continues during vehicle coasting based on the reverse motor torque.

[0082] Optionally, the brake disc rust removal function can be activated by the driver through corresponding function controls, or it can be automatically activated based on preset activation commands when preset trigger conditions are met. When the brake disc rust removal function is activated, during vehicle coasting, whether to perform rust removal by generating hydraulic braking force corresponding to the kinetic energy recovery intensity is determined based on the amount of rust on the brake disc; when the brake disc rust removal function is deactivated, no hydraulic braking force will be generated to remove rust on the brake disc during vehicle coasting. For example, the brake disc rust removal function can be automatically activated after the vehicle is powered on.

[0083] For example, Figure 6 This invention provides a system architecture diagram for implementing a brake disc rust removal method. (See diagram below.) Figure 6 As shown, the system includes a vehicle control unit (VCU) 01 and an integrated power brake (IPB) system 02, where the integrated power brake system 02 integrates a brake disc rust removal device 03. The VCU can monitor the accelerator pedal opening in real time and control the motor to generate corresponding motor torque to drive vehicle acceleration based on the real-time accelerator pedal opening. It can also send real-time accelerator pedal opening information to the integrated power brake system 02. The brake disc rust removal device 03 in the integrated power brake system 02 can monitor and calculate the amount of rust on the brake disc. When the accelerator pedal opening changes to zero and the vehicle enters a coasting state, the brake disc rust removal function is activated, controlling the braking system to generate hydraulic braking force corresponding to the kinetic energy recovery intensity to achieve frictional rust removal of the brake disc.

[0084] Please see Figure 7This is a schematic diagram of a brake disc rust removal device provided in an embodiment of the present invention. Figure 7 As shown, the brake disc rust removal device 03 can be implemented as all or part of the vehicle controller through software, hardware, or a combination of both. According to some embodiments, the brake disc rust removal device 03 includes a monitoring module 11 and a rust removal module 12, specifically including:

[0085] Monitoring module 11 is used to obtain the amount of corrosion of the vehicle brake disc in response to the accelerator pedal switching from a first state to a second state, wherein the accelerator pedal opening in the first state is greater than the accelerator pedal opening in the second state.

[0086] The rust removal module 12 is used to generate a hydraulic braking force corresponding to the intensity of kinetic energy recovery through the hydraulic braking system based on the amount of rust on the brake disc.

[0087] Optionally, the rust removal module 12 is specifically used for:

[0088] If the amount of corrosion on the brake disc is greater than a preset corrosion threshold, a hydraulic braking force corresponding to the intensity of kinetic energy recovery will be generated through the hydraulic braking system.

[0089] Optionally, the rust removal module 12 is further used for:

[0090] If the amount of corrosion on the brake disc is less than or equal to a preset corrosion threshold, the motor is controlled to generate a reverse motor torque corresponding to the kinetic energy recovery intensity.

[0091] Optionally, when the rust removal module 12 generates hydraulic braking force corresponding to the kinetic energy recovery intensity using the hydraulic braking system, it is specifically used for:

[0092] Determine the reverse motor torque corresponding to the kinetic energy recovery intensity, and determine the motor power corresponding to the reverse motor torque;

[0093] The hydraulic braking system is controlled to generate a hydraulic braking force of the same magnitude as the electric motor's power.

[0094] Optionally, the rust removal module 12 is further used for:

[0095] The amount of rust removal is calculated based on the hydraulic braking force and the duration of hydraulic braking.

[0096] The amount of rust on the brake disc is updated based on the amount of rust removed.

[0097] Optionally, the rust removal module 12 is further used for:

[0098] When the amount of corrosion on the brake disc is reduced to zero, the hydraulic braking force is reduced according to a preset gradient, and the reverse motor torque is increased according to a preset gradient until the reverse motor torque corresponding to the kinetic energy recovery intensity is obtained.

[0099] The above-described apparatus embodiments correspond to the method embodiments, and detailed descriptions can be found in the description of the method embodiments section, which will not be repeated here. The apparatus embodiments are derived based on the corresponding method embodiments and have the same technical effects as the corresponding method embodiments; detailed descriptions can be found in the corresponding method embodiments.

[0100] The present invention also provides a storage medium that can store multiple instructions, which are adapted to be loaded and executed by a processor using the brake disc rust removal method as described in the above embodiments. For the specific execution process, please refer to the detailed description in the above embodiments, which will not be repeated here.

[0101] The present invention also provides a computer program product that stores at least one instruction, which is loaded by the processor and executed as described in the above embodiments of the brake disc rust removal method. The specific execution process can be found in the detailed descriptions in the above embodiments, and will not be repeated here.

[0102] In one embodiment, the present invention also provides Figure 8 The diagram shows the structure of the vehicle controller. Figure 8 At the hardware level, the vehicle controller includes a processor 21, an internal bus 22, a network interface 23, memory 24, and non-volatile memory 25, and may also include other hardware required for business operations. The vehicle controller can be installed in the vehicle, where the processor 21 reads the corresponding computer program from the non-volatile memory 25 into memory and then runs it to implement the aforementioned brake disc rust removal method.

[0103] In one embodiment, the present invention also provides a vehicle that may include a brake disc rust removal device or a vehicle controller as described above, to perform a brake disc rust removal method by means of the brake disc rust removal device or the vehicle controller to achieve brake disc rust removal.

[0104] Finally, the various embodiments in this invention are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments.

[0105] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for removing rust from brake discs, applied to vehicles equipped with kinetic energy recovery functions, comprising: In response to the accelerator pedal switching from a first state to a second state, the amount of corrosion on the vehicle's brake disc is obtained. In the second state, the accelerator pedal opening is zero, while in the first state, the accelerator pedal opening is greater than zero. Based on the amount of corrosion on the brake disc, a hydraulic braking force corresponding to the intensity of kinetic energy recovery is generated through the hydraulic braking system.

2. The method according to claim 1, wherein generating a hydraulic braking force corresponding to the kinetic energy recovery intensity through a hydraulic braking system based on the amount of corrosion of the brake disc comprises: If the amount of corrosion on the brake disc is greater than a preset corrosion threshold, a hydraulic braking force corresponding to the intensity of kinetic energy recovery will be generated through the hydraulic braking system.

3. The method according to claim 2, further comprising: If the amount of corrosion on the brake disc is less than or equal to a preset corrosion threshold, the motor is controlled to generate a reverse motor torque corresponding to the kinetic energy recovery intensity.

4. The method according to any one of claims 1 or 2, wherein generating the hydraulic braking force corresponding to the kinetic energy recovery intensity through the hydraulic braking system comprises: Determine the reverse motor torque corresponding to the kinetic energy recovery intensity, and determine the motor power corresponding to the reverse motor torque; The hydraulic braking system is controlled to generate a hydraulic braking force of the same magnitude as the electric motor's power.

5. The method according to claim 1, after generating the hydraulic braking force corresponding to the kinetic energy recovery intensity through the hydraulic braking system, the method further includes: The amount of rust removal is calculated based on the hydraulic braking force and the duration of hydraulic braking. The amount of rust on the brake disc is updated based on the amount of rust removed.

6. The method according to claim 5, further comprising: When the amount of corrosion on the brake disc is reduced to zero, the hydraulic braking force is reduced according to a preset gradient, and the reverse motor torque is increased according to a preset gradient until the reverse motor torque corresponding to the kinetic energy recovery intensity is obtained.

7. A brake disc rust removal device, comprising: The monitoring module is used to obtain the amount of rust on the vehicle's brake disc in response to the accelerator pedal switching from a first state to a second state, wherein the accelerator pedal opening in the first state is greater than the accelerator pedal opening in the second state. The rust removal module is used to generate hydraulic braking force corresponding to the intensity of kinetic energy recovery through the hydraulic braking system based on the amount of rust on the brake disc.

8. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method according to any one of claims 1 to 6.

9. A vehicle controller, comprising: A processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to execute the steps of the method as claimed in any one of claims 1 to 6.

10. A vehicle comprising the brake disc rust removal device as claimed in claim 7 or the vehicle controller as claimed in claim 9.

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