Brake disc anticorrosion method, device, terminal equipment and storage medium

Abstract

The present application belongs to the field of brake discs, and in particular, relates to a method, device, terminal device and storage medium for the anti-corrosion of brake discs. The method comprises: obtaining the corrosion risk parameter of the brake disc; determining the corrosion risk level of the brake disc according to the corrosion risk parameter; and polarizing the brake disc according to the corrosion risk level. That is, the present application can polarize the brake disc according to different corrosion risk levels to complete the anti-corrosion of the brake disc and improve the anti-corrosion effect of the brake disc.

Description

Technical Field

[0001] The present application relates to the field of brake discs, and in particular to an anti-corrosion method, device, terminal equipment and storage medium for brake discs. Background Art

[0002] Vehicle brake disc corrosion refers to the damage of the metal material of the brake disc by the surrounding medium. During corrosion, chemical or electrochemical multiphase reactions occur on the surface of the brake disc, causing the metal material of the brake disc to enter an oxidized (ion) state. This will significantly reduce the strength, plasticity, toughness and other mechanical properties of the brake disc, destroy the geometric shape of the brake disc, and increase the wear between parts.

[0003] The existing method of preventing brake disc corrosion mainly involves adding physical equipment such as a waterproof cover when the vehicle is stationary to prevent the surrounding medium of the brake disc from corroding the brake disc. This anti-corrosion method has a poor anti-corrosion effect. Summary of the invention

[0004] The embodiments of the present application provide a brake disc anti-corrosion method, apparatus, terminal device and storage medium, which can improve the anti-corrosion effect of the brake disc.

[0005] In a first aspect, a brake disc anti-corrosion method is provided, comprising:

[0006] Obtaining corrosion risk parameters of brake discs;

[0007] Determining the corrosion risk level of the brake disc according to the corrosion risk parameter;

[0008] According to the corrosion risk level, the brake disc is polarized.

[0009] In the technical solution of the embodiment of the present application, the corrosion risk parameters of the brake disc are obtained; the corrosion risk level of the brake disc is determined according to the corrosion risk parameters; and the brake disc is polarized according to the corrosion risk level. That is, the present application can polarize the brake disc according to different corrosion risk levels to complete the corrosion protection of the brake disc and improve the corrosion protection effect of the brake disc.

[0010] In one embodiment, the corrosion risk parameter includes the temperature and humidity of the environment in which the brake disc is located, and determining the corrosion risk level of the brake disc according to the corrosion risk parameter includes:

[0011] The corrosion risk level corresponding to the corrosion risk parameter is queried in a preset mapping relationship between the corrosion risk parameter and the corrosion risk level based on the temperature and the humidity.

[0012] In the embodiment of the present application, through the mapping relationship between the preset corrosion risk parameter and the corrosion risk level, the corrosion risk level corresponding to the corrosion risk parameter can be accurately determined, and the brake disc can be polarized according to different corrosion risk levels to complete the corrosion protection of the brake disc and improve the corrosion protection effect of the brake disc.

[0013] In one embodiment, the corrosion risk level includes a first risk level, a second risk level, and a third risk level, and the corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level.

[0014] In one embodiment, the polarization treatment of the brake disc according to the corrosion risk level includes:

[0015] If the brake disc is at the first risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a first threshold; and / or

[0016] If the brake disc is at the second risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a second threshold;

[0017] The first threshold is greater than the second threshold.

[0018] In the embodiment of the present application, according to the different corrosion risk levels of the corrosion rate of the brake disc, when the charge state of the vehicle is greater than the threshold value corresponding to the different corrosion risk levels, the brake disc is polarized to prevent over-protection of the brake disc during corrosion protection and improve the corrosion protection effect of the brake disc.

[0019] In one embodiment, the corrosion risk level includes a first risk level, a second risk level and a third risk level, the corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level, and the corrosion rate corresponding to the second risk level is smaller than the corrosion rate corresponding to the third risk level.

[0020] In one embodiment, the polarization treatment of the brake disc according to the corrosion risk level includes:

[0021] If the brake disc is at the first risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a first threshold; and / or

[0022] If the brake disc is at the second risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a second threshold; and / or

[0023] If the brake disc is at the third risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a third threshold;

[0024] The first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.

[0025] In the embodiment of the present application, according to the different corrosion risk levels of the corrosion rate of the brake disc, when the charge state of the vehicle is greater than the threshold value corresponding to the different corrosion risk levels, the brake disc is polarized to prevent over-protection of the brake disc during corrosion protection and improve the corrosion protection effect of the brake disc.

[0026] In one embodiment, the vehicle is equipped with an anode material, the anode material and the brake disc constitute a cathodic protection circuit, the anode material is the anode of the cathodic protection circuit, the brake disc is the cathode of the cathodic protection circuit, and the polarization treatment of the brake disc includes:

[0027] When the vehicle is stationary, direct current is applied to the anode material in the cathodic protection circuit, so that the current flows through the anode material to the brake disc.

[0028] In the embodiment of the present application, when the vehicle is stationary, direct current is applied to the anode material in the cathodic protection circuit, so that the current flows through the anode material to the brake disc, thereby preventing the brake disc from becoming the anode and improving the anti-corrosion effect of the brake disc.

[0029] In a second aspect, a brake disc anti-corrosion device is provided, comprising:

[0030] An acquisition module, used to acquire corrosion risk parameters of the brake disc;

[0031] A determination module, used to determine the corrosion risk level of the brake disc according to the corrosion risk parameter;

[0032] The anti-corrosion module is used to perform polarization treatment on the brake disc according to the corrosion risk level.

[0033] In a third aspect, a terminal device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the anti-corrosion method for brake discs as described in any one of the first aspects when executing the computer program.

[0034] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the anti-corrosion method for a brake disc as described in any one of the first aspects is implemented.

[0035] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a schematic diagram of an application scenario of a brake disc anti-corrosion method provided by an embodiment of the present application;

[0038] Figure 2a is a schematic flow chart of a brake disc anti-corrosion method provided in an embodiment of the present application;

[0039] Figure 2b is an example diagram of a cathode protection circuit provided in an embodiment of the present application;

[0040] Figure 3 It is a structural schematic diagram of a brake disc anti-corrosion device provided in an embodiment of the present application;

[0041] Figure 4 It is a structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0042] In the following description, specific details such as specific system structures, technologies, etc. are proposed for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application. In other cases, the specific technical details of each embodiment may be referenced to each other, and a specific system not described in one embodiment may be referenced to other embodiments.

[0043] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0044] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0045] References to "an embodiment of the present application" or "some embodiments" described in the specification of the present application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in other embodiments", "an embodiment of the present application", "other embodiments of the present application", etc. that appear in different places in the specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0046] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0047] The existing method of preventing brake disc corrosion mainly involves adding physical equipment such as a waterproof cover when the vehicle is stationary to prevent the surrounding medium of the brake disc from corroding the brake disc. This anti-corrosion method has a poor anti-corrosion effect.

[0048] The inventors of the present application have discovered through research that the anti-corrosion effect of the brake disc can be improved by polarizing the brake disc according to the corrosion risk level to achieve anti-corrosion of the brake disc.

[0049] In order to illustrate the technical solution of the present application, a specific embodiment is provided below for illustration.

[0050] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an application scenario of a brake disc anti-corrosion method provided by an embodiment of the present application. For the convenience of explanation, only the part related to the present application is shown. The application scenario includes:

[0051] The brake disc 11 is generally a disc, and the brake disc 11 rotates when the car is moving. The brake caliper clamps the brake disc 11 to generate braking force, and the brake caliper clamps the brake disc 11 to slow down or stop the car when the brake is applied.

[0052] The brake disc 11 is divided into a solid brake disc and a ventilated disc according to its structure. A solid brake disc is a metal disc used for braking. Ventilated discs are divided into two types, namely, a scored disc and a perforated disc. Both ventilated discs are used to improve the cooling performance of the brake disc 11, reduce its thermal attenuation, and provide better braking ability. The embodiment of the present application does not limit the type of the brake disc 11.

[0053] The brake disc 11 is divided into two types according to the material: a carbon fiber ceramic brake disc and a metal brake disc. The carbon fiber ceramic brake disc has excellent heat decay resistance. In order to increase the heat decay resistance, some manufacturers also process metal brake discs with carbon fiber to improve their heat decay resistance and avoid the problem of poor low temperature performance of carbon fiber ceramic materials. The material of the brake disc 11 is not limited in the embodiment of the present application.

[0054] The sensor (not shown in the figure) includes a temperature sensor and a humidity sensor, which are installed on the brake disc 11 and are used to collect the temperature and humidity of the environment in which the brake disc 11 is located. The temperature sensor refers to a sensor that can sense temperature and convert it into a usable output signal. The temperature sensor can be divided into two categories according to the measurement method: contact type and non-contact type. According to the sensor material and electronic component characteristics, it can be divided into two categories: thermal resistors and thermocouples. The embodiment of the present application does not limit the type of temperature sensor.

[0055] A humidity sensor is a sensor that can sense the water vapor content in the environment and convert it into a usable output signal. Humidity sensors include capacitive, resistive, and thermal types. The embodiments of the present application do not limit the type of humidity sensor.

[0056] The vehicle control unit (VCU) 12 is the central control unit of the new energy vehicle and is the core of the entire control system. VCU 12 collects the status of the motor and battery, the accelerator pedal signal, the brake pedal signal, the actuator and the sensor 10 signal, and monitors the actions of the lower-level component controllers after making corresponding judgments based on the driver's intentions. It is responsible for the normal driving of the vehicle, brake energy feedback, energy management of the vehicle engine and power battery, network management, fault diagnosis and processing, vehicle status monitoring, etc., so as to ensure that the vehicle works normally and stably under good power, high economy and reliability.

[0057] The VCU 12 is electrically connected to the sensor via a serial communication bus (Controller Area Network, CAN), and is used to obtain the corrosion risk parameters of the brake disc 11 collected by the sensor (the corrosion risk parameters include the temperature and humidity of the environment in which the brake disc is located). In the embodiment of the present application, the VCU 12 is also used to determine the corrosion risk level of the brake disc according to the corrosion risk parameters; and polarize the brake disc according to the corrosion risk level.

[0058] The present application embodiment does not limit the specific composition of the application scenario. The application scenario may include Figure 1 The examples shown may have more or fewer components, or may combine certain components, or may have different components. Figure 1This is only an exemplary description and cannot be interpreted as a specific limitation of the present application. For example, network access equipment and pressure sensors may also be included.

[0059] Please refer to Figure 2a , Figure 2a It is a schematic flow chart of a brake disc anti-corrosion method provided in an embodiment of the present application. Figure 2a The execution subject of the method in can be a vehicle controller. As shown in FIG2 , the method includes: S201 to S203.

[0060] S201. The vehicle controller obtains the corrosion risk parameter of the brake disc.

[0061] Specifically, the corrosion risk parameter refers to the amount of factors that cause the corrosion risk of the brake disc. There are many factors that cause the corrosion risk of the brake disc, mainly including: brake disc body factors (nature, composition, structure, surface state, deformation and stress, etc.); environmental factors (medium composition, concentration, pH, temperature, pressure, electrolyte solution movement speed, etc.); surface state (dust, oil, moisture, oxide scale, rust and burrs on the surface of the brake disc and other surface defects and pollution, etc.).

[0062] In the embodiment of the present application, the corrosion risk parameters of the brake disc are collected by sensors and transmitted to the vehicle controller via the CAN bus, and the vehicle controller can obtain the corrosion risk parameters of the brake disc.

[0063] S202. The vehicle controller determines the corrosion risk level of the brake disc according to the corrosion risk parameter.

[0064] Specifically, the vehicle controller can determine the corrosion risk level of the brake disc according to the specific value of the corrosion risk parameter. For example, the larger the specific value of the corrosion risk parameter, the higher the corrosion risk level of the determined brake disc, and the smaller the specific value of the corrosion risk parameter, the lower the corrosion risk level of the determined brake disc.

[0065] S203. The vehicle controller performs polarization treatment on the brake disc according to the corrosion risk level.

[0066] Specifically, polarization refers to the phenomenon that things become polarized under certain conditions, causing their properties to deviate from their original state. The polarization of a brake disc refers to the fact that there are a large number of free electrons in the brake disc. These electrons usually swim in any direction, so there is no directional magnetic field or directional electric field on a macroscopic scale. However, once an external electric field or magnetic field is applied to the brake disc, the electrons are attracted by the electric field or magnetic field and will be arranged in a directional manner. As a result, one side is positively charged and the other side is negatively charged. This process is called the polarization of the brake disc. The polarization of a brake disc is the phenomenon that the potential of the brake disc deviates from the open circuit potential of the electrode. The open circuit potential of the electrode refers to the electrode potential when the current density is zero.

[0067] When the brake disc is polarized, the brake disc will polarize. Polarization reduces the corrosion rate of the brake disc. In the initial state, there are a large number of reactants around the brake disc, which can reduce the electrons on the brake disc in time. However, as the brake disc continues to participate in the reaction, the reactants around the brake disc become fewer and fewer, and the products deposited after the reaction become more and more; because the reaction products cannot be removed quickly, new reactants are prevented from approaching the brake disc. The final result is that the excess electrons in the brake disc area cannot be neutralized or output and become more and more. As the electrons continue to increase, the potential of the brake disc will slowly decrease, so that the potential of each point on the surface of the brake disc is reduced to the same potential value, so that the potential difference between the points on the surface of the brake disc can be reduced, achieving the purpose of slowing down corrosion.

[0068] The existing method of preventing brake disc corrosion is mainly to add physical equipment such as a waterproof cover when the vehicle is stationary to prevent the surrounding medium of the brake disc from corroding the brake disc. This waterproof cover requires the user to disassemble and assemble it after parking / before driving, which increases the user's time cost. At the same time, if the user forgets to disassemble and assemble, it will result in no protection or the risk of falling off during driving. This waterproof cover has a good effect on blocking rainwater intrusion and thus preventing brake disc corrosion, but it cannot block the intrusion of water vapor. Brake disc corrosion is mainly caused by electrochemical corrosion caused by the water film attached to the brake disc.

[0069] In the technical solution of the embodiment of the present application, the corrosion risk parameters of the brake disc are obtained; the corrosion risk level of the brake disc is determined according to the corrosion risk parameters; and the brake disc is polarized according to the corrosion risk level. That is, the present application can perform polarization treatment on the brake disc according to different corrosion risk levels to complete the corrosion protection of the brake disc. No additional physical equipment is required, and no additional disassembly and assembly by the user is required. When water vapor invades the brake disc, corrosion protection can also be achieved by polarizing the brake disc, thereby improving the corrosion protection effect of the brake disc.

[0070] In the embodiment of the present application, the corrosion risk parameters include the temperature and humidity of the environment in which the brake disc is located. According to the corrosion risk parameters, the corrosion risk level of the brake disc is determined, including:

[0071] The vehicle controller queries the corrosion risk level corresponding to the corrosion risk parameter in the preset mapping relationship between the corrosion risk parameter and the corrosion risk level based on the temperature and humidity.

[0072] Specifically, environmental factors are important factors that affect the corrosion risk of brake discs. The temperature and humidity content in environmental factors are particularly important in determining whether the brake disc has a corrosion risk.

[0073] In the embodiment of the present application, the corrosion risk level can be determined based on the temperature and humidity content.

[0074] In the present application, temperature refers to the temperature of gases in the atmosphere. The temperature is directly affected by insolation: the more insolation, the higher the temperature. The temperature can be expressed in Celsius (°C).

[0075] Humidity refers to the degree of dryness or wetness of the air, that is, the physical quantity of the amount of water vapor contained in the air. The less water vapor contained in a certain volume of air at a certain temperature, the drier the air; the more water vapor, the more humid the air. The degree of dryness or wetness of the air is called "humidity". In this sense, humidity is often expressed by physical quantities such as absolute humidity, relative humidity, comparative humidity, mixing ratio, saturation difference, and dew point; if it is expressed as the percentage of the weight of water vapor in wet steam to the total weight (volume) of steam, it is called the humidity of steam.

[0076] In the embodiment of the present application, a mapping relationship between corrosion risk parameters and corrosion risk levels is pre-set in the vehicle controller.

[0077] In the embodiment of the present application, the corrosion risk level includes a first risk level and a second risk level, and the corrosion rate of the brake disc corresponding to the first risk level is less than the corrosion rate corresponding to the second risk level.

[0078] In other embodiments, the corrosion risk level includes a first risk level, a second risk level, and a third risk level, the corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level, and the corrosion rate corresponding to the second risk level is smaller than the corrosion rate corresponding to the third risk level.

[0079] In other embodiments, the corrosion risk levels include a first risk level, a second risk level, a third risk level and a fourth risk level. The corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level, the corrosion rate corresponding to the second risk level is smaller than the corrosion rate corresponding to the third risk level, and the corrosion rate corresponding to the third risk level is smaller than the corrosion rate corresponding to the fourth risk level.

[0080] The embodiments of the present application do not limit the specific corrosion risk levels to several levels.

[0081] The corrosion rate, also known as the corrosion rate, refers to the average degree of corrosion per unit time.

[0082] The corrosion rate can be expressed as follows:

[0083] The mass change representation method uses the change in mass per unit area per unit time to express the corrosion rate.

[0084] The corrosion depth expression method uses the corrosion depth per unit time to express the corrosion rate.

[0085] Mechanical strength expression is suitable for expressing certain special types of corrosion, that is, the corrosion rate of which cannot be accurately reflected by the first two expressions. Such as stress corrosion cracking, cavitation, etc. This type of corrosion is often accompanied by a decrease in mechanical strength. Therefore, the change in strength before and after corrosion can be tested, such as the reduction rate of the limit value of tension, pressure, bending or impact.

[0086] The electrochemical representation method uses corrosion current density to represent the corrosion rate. The embodiment of the present application does not limit the representation method of the corrosion rate.

[0087] The vehicle controller pre-sets the mapping relationship between temperature and humidity and the corrosion risk level. For example, the present application embodiment uses the corrosion risk level including the first risk level, the second risk level and the third risk level as an example. Please refer to Table 1, which is an example table of a mapping relationship provided in the present application embodiment.

[0088] Table 1

[0089]

[0090]

[0091] In Table 1, the temperature is in degrees Celsius, and the humidity in Table 1 is relative humidity, which refers to the ratio of the actual water vapor pressure in the air to the saturated water vapor pressure at the current temperature. Relative humidity can be expressed as a percentage.

[0092] In an embodiment of the present application, the corrosion risk level is mapped to the temperature within a first numerical range and the humidity within a second numerical range. For example, the no corrosion risk in the first row and first column of Table 1 is mapped to the temperature within the first numerical range (-25°C ≤ temperature <-20°C) and the humidity within the second numerical range (0% ≤ humidity <10%).

[0093] The first corrosion risk level in the second row and seventh column is mapped to a temperature within a first numerical range (5° C. ≤ temperature < 10° C.) and a humidity within a second numerical range (10% ≤ humidity < 20%).

[0094] The second corrosion risk level in the seventh row and seventh column is mapped to the temperature within the first numerical range (5° C. ≤ temperature < 10° C.) and the humidity within the second numerical range (60% ≤ humidity < 70%).

[0095] The third corrosion risk level in the tenth row and tenth column is mapped to the temperature within the first numerical range (20° C. ≤ temperature < 25° C.) and the humidity within the second numerical range (90% ≤ humidity < 100%).

[0096] Since the relative humidity will not exceed 100%, when it exceeds 100%, it exceeds saturation, and the water in the air will be converted from gas to liquid (or solid) and fall down, and the relative humidity is still 100%. Therefore, in other embodiments, the corrosion risk level is mapped with the temperature in the first numerical range and the humidity corresponding to the extreme value in the second numerical range. For example, the third corrosion risk level in the twelfth column of the eleventh row is mapped with the temperature in the first numerical range (30°C ≤ temperature) and the humidity corresponding to the extreme value in the second numerical range (humidity = 100%).

[0097] In the embodiment of the present application, the vehicle controller can query the corrosion risk level corresponding to the corrosion risk parameter in Table 1 based on temperature and humidity.

[0098] In the embodiment of the present application, through the mapping relationship between the preset corrosion risk parameter and the corrosion risk level, the corrosion risk level corresponding to the corrosion risk parameter can be accurately determined, and the brake disc can be polarized according to different corrosion risk levels to complete the corrosion protection of the brake disc and improve the corrosion protection effect of the brake disc.

[0099] In an embodiment of the present application, when the corrosion risk level includes a first risk level and a second risk level, a method for performing polarization treatment on a brake disc according to the corrosion risk level includes:

[0100] If the brake disc is at a first risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a first threshold; and / or

[0101] If the brake disc is at a second risk level, the brake disc is polarized when the state of charge of the vehicle is greater than a second threshold; wherein the first threshold is greater than the second threshold.

[0102] Specifically, the state of charge (SOC) refers to the ratio of the remaining capacity of a battery after it has been used for a period of time or has been left unused for a long time to its capacity in a fully charged state, and is usually expressed as a percentage.

[0103] In the embodiments of the present application, a battery refers to a single physical module including one or more battery cells to provide a higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. A battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0104] In the embodiments of the present application, the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, and sodium-lithium-ion batteries, etc., which are not limited in the embodiments of the present application. The battery cells may be cylindrical, flat, rectangular, or other shapes, etc., which are not limited in the embodiments of the present application. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, which are not limited in the embodiments of the present application.

[0105] In a battery, when there are multiple battery cells, the multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells is accommodated in a box; of course, the battery can also be a battery module formed by connecting multiple battery cells in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in a box. The battery can also include other structures. For example, the battery can also include a busbar component for realizing electrical connection between multiple battery cells.

[0106] The first threshold refers to the threshold corresponding to the battery state of charge when the corrosion rate of the brake disc is at the first risk level and the polarization treatment of the brake disc begins.

[0107] In the embodiment of the present application, the vehicle controller can determine the corrosion risk level corresponding to the corrosion rate of the brake disc according to the mapping relationship between the corrosion risk parameter and the corrosion risk level. If the corrosion rate of the brake disc is at the first risk level, it proves that the corrosion rate of the brake disc at this time is relatively small relative to the corrosion rate of the second risk level. In order to prevent over-protection of the brake disc when the corrosion rate is small, the brake disc is polarized when the state of charge of the vehicle is greater than the first threshold. For example, when the state of charge of the vehicle is greater than 80%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0108] The second threshold refers to the threshold value corresponding to the battery state of charge when the corrosion rate of the brake disc is at the second risk level and the polarization treatment of the brake disc begins.

[0109] In the embodiment of the present application, if the vehicle controller determines that the corrosion rate of the brake disc is at the second risk level based on the mapping relationship between the corrosion risk parameter and the corrosion risk level, it proves that the corrosion rate of the brake disc at this time is greater than the corrosion rate of the first risk level. In order to prevent over-protection of the brake disc when the corrosion rate is medium, the brake disc is polarized when the state of charge of the vehicle is greater than the second threshold. For example, when the state of charge of the vehicle is greater than 50%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0110] In the embodiment of the present application, the first threshold is greater than the second threshold. The embodiment of the present application does not limit the specific values ​​of the first threshold and the second threshold.

[0111] In the embodiment of the present application, when the corrosion risk level includes the first risk level, the second risk level and the third risk level, the method of polarizing the brake disc according to the corrosion risk level includes:

[0112] If the brake disc is at a first risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a first threshold; and / or

[0113] If the brake disc is at a second risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a second threshold; and / or

[0114] If the brake disc is at the third risk level, the brake disc is polarized when the state of charge of the vehicle is greater than a third threshold;

[0115] The first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.

[0116] Specifically, the third threshold refers to the threshold value corresponding to the battery state of charge when the corrosion rate of the brake disc is at the third risk level and the polarization treatment of the brake disc begins.

[0117] In the embodiment of the present application, the vehicle controller can determine the corrosion risk level corresponding to the corrosion rate of the brake disc according to Table 1. If the corrosion rate of the brake disc is at the first risk level, it proves that the corrosion rate of the brake disc at this time is relatively small relative to the corrosion rate of the second risk level and the third risk level. In order to prevent over-protection of the brake disc when the corrosion rate is small, the brake disc is polarized when the state of charge of the vehicle is greater than the first threshold. For example, when the state of charge of the vehicle is greater than 80%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0118] In the embodiment of the present application, if the vehicle controller determines that the corrosion rate of the brake disc is at the second risk level according to Table 1, it proves that the corrosion rate of the brake disc at this time is relatively small relative to the corrosion rate of the third risk level. In order to prevent over-protection of the brake disc when the corrosion rate is medium, the brake disc is polarized when the state of charge of the vehicle is greater than the second threshold. For example, when the state of charge of the vehicle is greater than 50%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0119] In the embodiment of the present application, if the vehicle controller determines that the corrosion rate of the brake disc is at the third risk level according to Table 1, it proves that the corrosion rate of the brake disc at this time is greater than the corrosion rate of the second risk level. In order to prevent over-protection of the brake disc when the corrosion rate is large, the brake disc is polarized when the state of charge of the vehicle is greater than the third threshold. For example, when the state of charge of the vehicle is greater than 20%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0120] In the embodiment of the present application, the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold. The embodiment of the present application does not limit the specific values ​​of the first threshold, the second threshold and the third threshold.

[0121] In the embodiment of the present application, when the corrosion risk level includes a first risk level, a second risk level, a third risk level, and a fourth risk level, a method for polarizing the brake disc according to the corrosion risk level includes:

[0122] If the brake disc is at a first risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a first threshold; and / or

[0123] If the brake disc is at a second risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a second threshold; and / or

[0124] If the brake disc is at the third risk level, the brake disc is polarized when the state of charge of the vehicle is greater than a third threshold;

[0125] and / or

[0126] If the brake disc is at the fourth risk level, the brake disc is polarized when the state of charge of the vehicle is greater than a fourth threshold;

[0127] Among them, the first threshold is greater than the second threshold, the second threshold is greater than the third threshold, and the third threshold is greater than the fourth threshold.

[0128] Specifically, the fourth threshold refers to the threshold value corresponding to the battery state of charge when the corrosion rate of the brake disc is at the fourth risk level and the polarization treatment of the brake disc begins.

[0129] In the embodiment of the present application, the vehicle controller can determine the corrosion risk level corresponding to the corrosion rate of the brake disc according to the mapping relationship between the corrosion risk parameter and the corrosion risk level. If the corrosion rate of the brake disc is at the first risk level, it proves that the corrosion rate of the brake disc at this time is relatively small relative to the corrosion rate of the second risk level, the third risk level and the fourth risk level. In order to prevent over-protection of the brake disc when the corrosion rate is small, the brake disc is polarized when the state of charge of the vehicle is greater than the first threshold. For example, when the state of charge of the vehicle is greater than 80%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0130] In the embodiment of the present application, if the vehicle controller determines that the corrosion rate of the brake disc is at the second risk level based on the mapping relationship between the corrosion risk parameter and the corrosion risk level, it proves that the corrosion rate of the brake disc at this time is relatively small relative to the corrosion rate of the third risk level and the fourth risk level. In order to prevent over-protection of the brake disc when the corrosion rate is medium, the brake disc is polarized when the state of charge of the vehicle is greater than the second threshold. For example, when the state of charge of the vehicle is greater than 60%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0131] In the embodiment of the present application, if the vehicle controller determines that the corrosion rate of the brake disc is at the third risk level based on the mapping relationship between the corrosion risk parameter and the corrosion risk level, it proves that the corrosion rate of the brake disc at this time is smaller than that of the fourth risk level. In order to prevent over-protection of the brake disc when the corrosion rate is medium, the brake disc is polarized when the state of charge of the vehicle is greater than the third threshold. For example, when the state of charge of the vehicle is greater than 40%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0132] In the embodiment of the present application, if the vehicle controller determines that the corrosion rate of the brake disc is at the fourth risk level based on the mapping relationship between the corrosion risk parameter and the corrosion risk level, it proves that the corrosion rate of the brake disc at this time is relatively large relative to the corrosion rates of the first risk level, the second risk level and the third risk level. In order to prevent over-protection of the brake disc when the corrosion rate is large, the brake disc is polarized when the state of charge of the vehicle is greater than the fourth threshold. For example, when the state of charge of the vehicle is greater than 20%, the brake disc is polarized to complete the corrosion protection of the brake disc.

[0133] In the embodiment of the present application, the first threshold is greater than the second threshold, the second threshold is greater than the third threshold, and the third threshold is greater than the fourth threshold. The embodiment of the present application does not limit the specific values ​​of the first threshold, the second threshold, the third threshold and the fourth threshold.

[0134] In the embodiment of the present application, according to the different corrosion risk levels of the corrosion rate of the brake disc, when the charge state of the vehicle is greater than the threshold value corresponding to the different corrosion risk levels, the brake disc is polarized to prevent over-protection of the brake disc during corrosion protection and improve the corrosion protection effect of the brake disc.

[0135] In the embodiment of the present application, the vehicle is equipped with an anode material, the anode material and the brake disc constitute a cathodic protection circuit, the anode material is the anode of the cathodic protection circuit, the brake disc is the cathode of the cathodic protection circuit, and the brake disc is polarized, including:

[0136] When the vehicle is stationary, direct current is applied to the anode material in the cathodic protection circuit, causing the current to flow through the anode material to the brake disc.

[0137] Specifically, the anode material may be specifically configured according to the structure of the vehicle, and the embodiment of the present application does not limit the position of the anode material.

[0138] Anode materials are metals that are more active than brake discs. The more active the metal, the easier it is to lose electrons and can replace the brake disc as an anode. Anode materials include scrap steel, ferrosilicon, graphite, mixed oxide anodes, conductive polymer linear anodes and mixed metal oxide anodes, precious metal electrodes, etc.

[0139] The reason for the corrosion of the brake disc is that the brake disc and the medium in the environment in which the brake disc is located undergo an electrochemical reaction, which causes the brake disc to corrode electrochemically. When the electrochemical reaction occurs, the brake disc, as an anode, loses electrons and undergoes a redox reaction.

[0140] When the vehicle is moving, the corrosion on the brake disc will be removed by the brake pads equipped with the vehicle through physical rust removal.

[0141] In order to prevent the brake disc from losing electrons and causing redox reaction when the vehicle is stationary, the vehicle controller applies direct current and anode material through a DC / DC converter to prevent the brake disc from becoming the anode, replenishing a large number of electrons to the brake disc, making the protected brake disc as a whole in a state of excess electrons, and making all points on the surface of the brake disc reach the same negative potential, so that the potential of the protected brake disc is lower than the surrounding environment.

[0142] A DC / DC converter is a device that converts a DC power supply of a certain voltage level into a DC power supply of another voltage level. DC / DC converters are divided into two categories: boost power supply and step-down power supply according to the voltage level conversion relationship, and are divided into two categories: isolated power supply and non-isolated power supply according to the input-output relationship. For example, the DC / DC converter connected to the vehicle-mounted DC power supply converts high-voltage DC power into low-voltage DC power. In the embodiment of the present application, the voltage corresponding to the low-voltage DC power is in the third numerical range, and the third numerical range is (0, 5)V.

[0143] For example, please refer to Figure 2b , Figure 2b is an example diagram of a cathode protection circuit provided in an embodiment of the present application, Figure 2b The brake disc acts as the cathode, the anode material acts as the anode, and the medium in the environment of the brake disc acts as the electrolyte to produce an electrochemical reaction. When the vehicle is stationary, direct current is applied to the anode material, so that the current flows through the anode material to the brake disc to complete the corrosion protection of the brake disc.

[0144] It should be noted that when the brake disc is used as the negative electrode and the anode material is used as the anode for electrochemical reaction, there will always be a certain amount of hydrogen ions due to the dissociation of water molecules in the environment of the brake disc. Therefore, during the electrochemical process, while the metal corresponding to the brake disc is precipitated at the cathode (main reaction), hydrogen is also precipitated (side reaction). The impact of hydrogen evolution is multifaceted, the most important of which is hydrogen embrittlement. Hydrogen embrittlement is one of the most serious quality risks in metal surface treatment. Brake discs with severe hydrogen evolution may break during use, causing serious accidents.

[0145] Hydrogen embrittlement refers to the hydrogen ions dissolved in the brake disc, which aggregate into hydrogen molecules and cause stress concentration, exceeding the strength limit of the brake disc and forming tiny cracks inside the brake disc.

[0146] In order to prevent the occurrence of hydrogen embrittlement, the embodiment of the present application applies direct current to the anode material according to the corrosion risk level. At different corrosion risk levels, direct current is applied to the anode material under different vehicle charge states, which can effectively avoid the occurrence of hydrogen embrittlement and save electricity. Specifically, when the corrosion rate of the brake disc is at the first risk level, direct current is applied when the vehicle's charge state is greater than a first threshold. When the corrosion rate of the brake disc is at the second risk level, direct current is applied when the vehicle's charge state is greater than a second threshold. When the corrosion rate of the brake disc is at the third risk level, direct current is applied when the vehicle's charge state is greater than a third threshold.

[0147] In the embodiment of the present application, when the vehicle is stationary, direct current is applied to the anode material according to the corrosion risk level, so that the current flows through the anode material to the brake disc, thereby preventing the brake disc from becoming the anode, thereby improving the anti-corrosion effect of the brake disc. At the same time, since direct current is applied to the anode material according to the corrosion risk level, direct current is applied to the anode material under different vehicle charge states at different corrosion risk levels, rather than applying direct current all the time, which can save electricity and prevent the occurrence of hydrogen embrittlement.

[0148] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0149] Please refer to Figure 3 , Figure 3 : is a schematic diagram of the structure of a brake disc anti-corrosion device provided in an embodiment of the present application, the device comprising:

[0150] The acquisition module 31 is used to acquire the corrosion risk parameter of the brake disc.

[0151] The determination module 32 is used to determine the corrosion risk level of the brake disc according to the corrosion risk parameter.

[0152] The anti-corrosion module 33 is used to perform polarization treatment on the brake disc according to the corrosion risk level.

[0153] In the technical solution of the embodiment of the present application, the corrosion risk parameter of the brake disc is obtained by the acquisition module 31; the acquisition module 31 determines the corrosion risk level of the brake disc according to the corrosion risk parameter; the acquisition module 31 performs polarization treatment on the brake disc according to the corrosion risk level. That is, the present application can perform polarization treatment on the brake disc according to different corrosion risk levels to complete the anti-corrosion of the brake disc and improve the anti-corrosion effect of the brake disc.

[0154] Among them, the corrosion risk parameters in the device include the temperature and humidity of the environment in which the brake disc is located. The determination module 32 is also used to query the corrosion risk level corresponding to the corrosion risk parameter in the preset mapping relationship between the corrosion risk parameter and the corrosion risk level based on the temperature and humidity.

[0155] In the embodiment of the present application, through the mapping relationship between the preset corrosion risk parameter and the corrosion risk level, the corrosion risk level corresponding to the corrosion risk parameter can be accurately determined, and the brake disc can be polarized according to different corrosion risk levels to complete the corrosion protection of the brake disc and improve the corrosion protection effect of the brake disc.

[0156] Among them, the corrosion risk level in the device includes a first risk level and a second risk level, and the corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level.

[0157] The anti-corrosion module 33 is further configured to polarize the brake disc when the state of charge of the vehicle is greater than a first threshold value if the corrosion rate of the brake disc is at a first risk level; and / or

[0158] If the corrosion rate of the brake disc is at a second risk level, the brake disc is polarized when the state of charge of the vehicle is greater than a second threshold.

[0159] The first threshold is greater than the second threshold.

[0160] In the embodiment of the present application, according to the different corrosion risk levels of the corrosion rate of the brake disc, when the charge state of the vehicle is greater than the threshold value corresponding to the different corrosion risk levels, the brake disc is polarized to prevent over-protection of the brake disc during corrosion protection and improve the corrosion protection effect of the brake disc.

[0161] Among them, the corrosion risk levels in the device include a first risk level, a second risk level and a third risk level. The corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level, and the corrosion rate corresponding to the second risk level is smaller than the corrosion rate corresponding to the third risk level.

[0162] The anti-corrosion module 33 is further configured to polarize the brake disc when the state of charge of the vehicle is greater than a first threshold value if the corrosion rate of the brake disc is at a first risk level; and / or

[0163] If the corrosion rate of the brake disc is at a second risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a second threshold; and / or

[0164] If the corrosion rate of the brake disc is at a third risk level, the brake disc is polarized when the state of charge of the vehicle is greater than a third threshold.

[0165] The first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.

[0166] In the embodiment of the present application, according to the different corrosion risk levels of the corrosion rate of the brake disc, when the charge state of the vehicle is greater than the threshold value corresponding to the different corrosion risk levels, the brake disc is polarized to prevent over-protection of the brake disc during corrosion protection and improve the corrosion protection effect of the brake disc.

[0167] Among them, the vehicle in this module is equipped with anode material, and the anode material and the brake disc constitute a cathodic protection circuit. The anode material is the anode of the cathodic protection circuit, and the brake disc is the cathode of the cathodic protection circuit. The anti-corrosion module 33 is also used to apply direct current to the anode material in the cathodic protection circuit when the vehicle is stationary, so that the current flows through the anode material to the brake disc.

[0168] In the embodiment of the present application, when the vehicle is stationary, direct current is applied to the anode material, so that the current flows through the anode material to the brake disc, thereby preventing the brake disc from becoming the anode and improving the anti-corrosion effect of the brake disc.

[0169] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0170] like Figure 4 As shown, an embodiment of the present application also provides a terminal device 200, including a memory 21, a processor 22, and a computer program 23 stored in the memory 21 and executable on the processor 22. When the processor 22 executes the computer program 23, the anti-corrosion method of the brake disc of the above-mentioned embodiments is implemented.

[0171] The processor 22 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0172] The memory 21 may be an internal storage unit of the terminal device 200. The memory 21 may also be an external storage device of the terminal device 200, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal device 200. Further, the memory 21 may also include both an internal storage unit of the terminal device 200 and an external storage device. The memory 21 is used to store computer programs and other programs and data required by the terminal device 200. The memory 21 may also be used to temporarily store data that has been output or is to be output.

[0173] The embodiments of the present application further provide a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the anti-corrosion method of the brake disc of each of the above embodiments is implemented.

[0174] An embodiment of the present application provides a computer program product. When the computer program product is run on a mobile terminal, the mobile terminal implements the anti-corrosion method of the brake disc of each of the above embodiments when executing the computer program product.

[0175] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium may at least include: any entity or device that can carry the computer program code to the camera / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0176] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0177] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0178] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0179] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for anti-corrosion of a brake disc, characterized in that: include: Obtaining corrosion risk parameters of brake discs; Determining the corrosion risk level of the brake disc according to the corrosion risk parameter; According to the corrosion risk level, polarizing the brake disc; According to the corrosion risk level, polarization treatment is performed on the brake disc, including: According to the corrosion rate of the brake disc being at different corrosion risk levels, when the charge state of the vehicle is greater than the threshold value corresponding to the different corrosion risk levels, the brake disc is polarized.

2. The anticorrosion method according to claim 1, characterized in that: The corrosion risk parameter includes the temperature and humidity of the environment in which the brake disc is located. The determining the corrosion risk level of the brake disc according to the corrosion risk parameter includes: The corrosion risk level corresponding to the corrosion risk parameter is queried in a preset mapping relationship between the corrosion risk parameter and the corrosion risk level based on the temperature and the humidity.

3. The anticorrosion method according to claim 1 or 2, characterized in that: The corrosion risk level includes a first risk level and a second risk level, and the corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level.

4. The anticorrosion method according to claim 3, characterized in that: The polarization treatment of the brake disc according to the corrosion risk level includes: If the brake disc is at the first risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a first threshold; and / or If the brake disc is at the second risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a second threshold; The first threshold is greater than the second threshold.

5. The anticorrosion method according to claim 1 or 2, characterized in that: The corrosion risk levels include a first risk level, a second risk level and a third risk level. The corrosion rate of the brake disc corresponding to the first risk level is smaller than the corrosion rate corresponding to the second risk level, and the corrosion rate corresponding to the second risk level is smaller than the corrosion rate corresponding to the third risk level.

6. The anticorrosion method according to claim 5, characterized in that: The polarization treatment of the brake disc according to the corrosion risk level includes: If the brake disc is at the first risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a first threshold; and / or If the brake disc is at the second risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a second threshold; and / or If the brake disc is at the third risk level, polarizing the brake disc when the state of charge of the vehicle is greater than a third threshold; The first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.

7. The anticorrosion method according to any one of claims 1 to 6, characterized in that: The vehicle is equipped with an anode material, the anode material and the brake disc constitute a cathodic protection circuit, the anode material is the anode of the cathodic protection circuit, the brake disc is the cathode of the cathodic protection circuit, and the polarization treatment of the brake disc includes: When the vehicle is stationary, direct current is applied to the anode material in the cathodic protection circuit, so that the current flows through the anode material to the brake disc.

8. A brake disc anti-corrosion device, characterized in that: include: An acquisition module, used to acquire corrosion risk parameters of the brake disc; A determination module, used to determine the corrosion risk level of the brake disc according to the corrosion risk parameter; an anti-corrosion module, used for performing polarization treatment on the brake disc according to the corrosion risk level; According to the corrosion risk level, polarization treatment is performed on the brake disc, including: According to the corrosion rate of the brake disc being at different corrosion risk levels, when the charge state of the vehicle is greater than the threshold value corresponding to the different corrosion risk levels, the brake disc is polarized.

9. A terminal device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the anti-corrosion method for the brake disc according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the anti-corrosion method for a brake disc according to any one of claims 1 to 7 is implemented.

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