Parking appparatus, parking method, vehicle and storage medium

Abstract

A parking apparatus (10), comprising: a brake caliper (100), a caliper motor (200), a locking mechanism (300) and a transmission mechanism (400), wherein the caliper motor outputs a target braking force during braking or parking, and the transmission mechanism transmits the target braking force to the brake caliper. During parking, the target braking force causes the brake caliper to clamp down under force, and, once the brake caliper has clamped down under force, locking of the brake caliper is realized by means of the locking mechanism fastening the transmission mechanism, thus completing parking. Further provided are a parking method, a vehicle and a storage medium.

Description

Parking device, parking method, vehicle and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311139364.3 filed on September 5, 2023, entitled “Parking device, parking method, vehicle and storage medium,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of vehicle control, and in particular to a parking device, a parking method, a vehicle, and a storage medium. Background Art

[0004] With the increasing demand for electric vehicles and smart driving, people are paying attention to electronic mechanical braking systems with faster response speed and more accurate control. The electronic parking function is a safety function. When the vehicle is stationary, the driver can park the vehicle by pulling up the parking function switch. The electronic parking function clamps the rear wheels to keep the vehicle stationary on roads with different slopes.

[0005] In the related art, parking is achieved by adding an independent electronic parking motor and a transmission mechanism, and a dedicated transmission mechanism is required to transmit force from the electronic parking motor to the piston, resulting in problems such as cost and waste of resources.

[0006] Summary of the Invention

[0007] The present application provides a parking device, a parking method, a vehicle and a storage medium. The device can use the same set of brake calipers and caliper motors to achieve braking and parking, without the need for additional parking motors and related components. This can effectively reduce the components required for parking, reduce parking costs and save space for the layout of the brake calipers.

[0008] In a first aspect, a parking device is provided, which includes: a brake caliper and a caliper motor that outputs a target braking force during braking or parking; a transmission mechanism for transmitting the target braking force during braking or parking to the brake caliper, wherein the target braking force during parking causes the brake caliper to be clamped when parking; and a locking mechanism, wherein the locking mechanism is connected to the transmission mechanism, and after the brake caliper is clamped, the transmission mechanism is clamped to achieve locking of the brake caliper, thereby completing parking.

[0009] Through the above technical solution, the embodiment of the present application can transmit braking force through the transmission mechanism to clamp the brake caliper when parking, and clamp the transmission mechanism after clamping. Since the transmission mechanism cannot transmit power after clamping, the brake caliper can be indirectly locked to achieve parking, thereby achieving parking through the reuse of the brake caliper and the caliper motor. There is no need to additionally arrange a parking motor and related components, which can effectively reduce the components required for parking, reduce parking costs and subsequent maintenance costs, and save layout space.

[0010] In combination with the first aspect, in some possible implementations, the locking mechanism includes: an electromagnetic component; a push rod mechanically connected to the electromagnetic component; and a locking component mechanically connected to the push rod. When parking, the electromagnetic component drives the push rod to release the locking component, and the locking component clamps the transmission mechanism to lock the brake caliper. When parking is released, the electromagnetic component drives the push rod to retract the locking component.

[0011] Through the above technical solution, the embodiment of the present application can utilize the locking member in the locking mechanism to lock the brake caliper to achieve stable parking, and when the parking is released, the locking member is retracted to stop the parking.

[0012] In a second aspect, a vehicle is provided, comprising a parking device according to any one of the above embodiments.

[0013] On the third aspect, a parking method is provided, which uses a parking device as in the above embodiment to park, and includes the following steps: obtaining a target braking force required for parking; controlling the caliper motor to output the target braking force, the target braking force causes the brake caliper to be clamped; after the brake caliper is clamped, locking the brake caliper to complete parking.

[0014] Through the above technical solution, the embodiment of the present application can control the caliper motor to output a target braking force when the vehicle meets preset parking conditions, causing the brake caliper to clamp. After the brake caliper is clamped, the locking mechanism locks the brake caliper to complete parking. Thus, by reusing the brake caliper and caliper motor to achieve braking functions, users can park more safely and accurately, reducing parking costs and saving layout space.

[0015] In combination with the third aspect, in some possible implementations, locking the brake caliper to complete parking includes: controlling a locking mechanism to clamp a transmission mechanism of a caliper motor.

[0016] In combination with the third aspect and the above implementation method, before controlling the caliper motor to output the target braking force, it also includes: detecting whether the vehicle meets the preset parking conditions; if the vehicle meets the preset parking conditions, controlling the caliper motor to output the target braking force.

[0017] In combination with the third aspect and the above-mentioned implementation method, the preset parking conditions include at least multiple of the following conditions: the vehicle's parking function is turned on; the vehicle's current wheel speed is less than or equal to the preset wheel speed; the locking mechanism is in the first state; the vehicle's accelerator pedal opening is less than or equal to the preset opening.

[0018] In combination with the third aspect and the above-mentioned implementation method, after locking the brake caliper to complete parking, it also includes: detecting whether the vehicle meets the preset parking release conditions; if the vehicle meets the preset parking release conditions, retracting the locking mechanism and the brake caliper releases the wheel.

[0019] In combination with the third aspect and the above-mentioned implementation method, the preset parking release conditions include multiple of the following conditions: the vehicle's parking function is turned off; the vehicle's current wheel speed is less than or equal to the preset wheel speed; the locking mechanism is in the second state; the vehicle's accelerator pedal opening is greater than the preset opening.

[0020] In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the method in the above-mentioned third aspect or any possible implementation of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a block diagram of a parking device according to an embodiment of the present application;

[0022] FIG2 is a partial structural diagram of a parking device according to an embodiment of the present application;

[0023] FIG3 is a flow chart of a parking method according to an embodiment of the present application;

[0024] FIG4 is a diagram of an electronic parking function control interface according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] FIG1 is a schematic structural diagram of a parking device provided in an embodiment of the present application.

[0026] Exemplarily, as shown in FIG. 1 , the parking device 10 may include a brake caliper 100 , a caliper motor 200 , a locking mechanism 300 , and a transmission mechanism 400 .

[0027] Among them, the transmission mechanism 400 is respectively connected to the brake caliper 100 and the caliper motor 200, and the locking mechanism 300 is connected to the transmission mechanism 400. The caliper motor 200 outputs the target braking force when braking or parking, and the transmission mechanism 400 transmits the target braking force to the brake caliper 100, so that the brake caliper 100 is clamped when parking; after the brake caliper 100 is clamped, the locking mechanism 300 clamps the transmission mechanism 400 to achieve locking of the brake caliper 100 and complete parking.

[0028] It can be understood that for a vehicle equipped with a braking mechanism comprising a brake caliper 100, a caliper motor 200 and a transmission mechanism 400, the brake caliper 100, the caliper motor 200 and the transmission mechanism 400 are existing components of the vehicle. The embodiment of the present application can add a locking mechanism 300 through structural improvement on the basis of the above-mentioned existing braking mechanism. By reusing the braking functions of the brake caliper 100, the caliper motor 200 and the transmission mechanism 400 and cooperating with the locking mechanism 300 to achieve the parking function, parking can be achieved by reusing the structure and function of the braking mechanism and adding the locking mechanism 300. There is no need to additionally arrange a parking motor and related components, which can effectively reduce the components required for parking, and further, the parking function can be achieved without making major changes to the vehicle. The structure is simple, which can effectively reduce the parking cost and subsequent maintenance cost, and save layout space.

[0029] It should be noted that the target braking force during braking can be determined based on the travel of the brake pedal, and the target braking force during parking can be determined based on factors such as the slope at which the vehicle is parked. The target braking force during parking is typically required to keep the vehicle stationary. For example, when parking, the target braking force corresponding to the current slope can be determined by consulting a table that correlates parking slope with target braking force. This target braking force, also referred to as the parking braking force, is output by the caliper motor 200, which then clamps the transmission mechanism 400 via the locking mechanism 300 to prevent rotation, thereby achieving parking.

[0030] According to one embodiment of the present application, the locking mechanism 300 may include: an electromagnetic member, a push rod 1 and a locking member.

[0031] Among them, the push rod 1 is mechanically connected to the electromagnetic part; the locking part is mechanically connected to the push rod 1. When parking, the electromagnetic part drives the push rod 1 to release the locking part, and the locking part clamps the transmission mechanism 400 to achieve the locking of the brake caliper 100. When parking is released, the electromagnetic part drives the push rod 1 to retract the locking part.

[0032] The electromagnetic member can generate magnetism by energizing, for example, the electromagnetic member can be an electromagnet 6 as shown in FIG2 , etc., which is not specifically limited. The locking member can be a pawl 2 as shown in FIG2 , and the following embodiments will be described using the pawl as an example.

[0033] It can be understood that the embodiment of the present application can directly control the push rod 1 to release or retract the locking member through the electromagnetic member. The locking member can clamp the transmission mechanism 400 when released. Since power is transmitted between the transmission mechanism 400 and the brake caliper 100 through gears and rotating shafts, the brake caliper 100 can also be locked after the transmission mechanism 400 is clamped.

[0034] Specifically, taking the structure shown in FIG2 as an example, the ratchet 3 is connected to the motor drive shaft 4 of the caliper motor 200, the push rod 1 is connected to the pawl 2, and the electromagnet 6 controls the push rod 1 to release the pawl 2, and when parking, the ratchet 3 is clamped through the pawl 2 to clamp the motor drive shaft 4 of the caliper motor 200. The parking process of the parking device 10 will be described below:

[0035] (1) Detecting the user's parking request, such as when the electronic parking switch is pressed;

[0036] (2) If a parking request is detected by the user, and the EPB (Electrical Park Brake) system detects that the solenoid valve 6 is in operation and the parking function is activated, the target braking force is output through the caliper motor 200, and the transmission mechanism 400 transmits the target braking force output by the caliper motor 200 to the brake caliper 100, thereby clamping the brake caliper 100, and uses the push rod 1 to push the pawl 2 to clamp the ratchet 3, thereby preventing the transmission mechanism 400 from rotating, thereby achieving parking.

[0037] According to an embodiment of the present application, the locking mechanism 300 may further include: a return spring 5 , which may assist the locking member in returning to its initial position.

[0038] As shown in FIG2 , when the user stops parking and the EPB system detects that the solenoid valve 6 is closed and the parking function is off, the embodiment of the present application can control the push rod 1 to retract the pawl 2 through the electromagnet 6 and return the pawl 2 to its initial position under the action of the return spring 5. The initial position can be the position of the pawl 2 before parking.

[0039] In summary, the parking device of the embodiment of the present application can transmit the target braking force through the transmission mechanism to clamp the brake caliper when parking, and clamp the transmission mechanism after the brake caliper is clamped. Since the transmission mechanism cannot transmit power after clamping, the brake caliper can be indirectly locked to achieve parking, thereby achieving parking through the reuse of the brake caliper and the caliper motor. There is no need to additionally arrange a parking motor and related components, which can effectively reduce the components required for parking, reduce parking costs and subsequent maintenance costs, and save layout space.

[0040] Next, a parking method according to an embodiment of the present application will be described with reference to the accompanying drawings. The method uses the parking device according to the above embodiment to park the vehicle.

[0041] FIG3 is a schematic flowchart of a parking method provided in an embodiment of the present application.

[0042] Exemplarily, as shown in FIG3 , the method includes the following steps:

[0043] In step S301 , a target braking force required for parking is obtained.

[0044] It can be understood that the target braking force refers to the braking force required for parking after receiving the user's parking request. In the actual implementation process, the embodiment of the present application can use the vehicle's built-in parking switch to issue a parking request, such as pressing the electronic parking switch to indicate a parking request. After detecting the user's parking request, the target braking force required for parking the vehicle can be determined based on the current slope of the vehicle. For example, when the vehicle is traveling on a larger slope, the resistance it withstands increases, so a larger braking force is required to keep the vehicle stably parked.

[0045] In step S302 , the caliper motor is controlled to output a target braking force, wherein the target braking force causes the brake caliper to be clamped.

[0046] The caliper motor of the embodiment of the present application can output a target braking force during braking or parking, and drive the motor drive shaft to rotate through the transmission mechanism so that the brake caliper is clamped.

[0047] According to one embodiment of the present application, before controlling the caliper motor to output the target braking force, it also includes: detecting whether the vehicle meets the preset parking conditions; if the vehicle meets the preset parking conditions, controlling the caliper motor to output the target braking force.

[0048] It is understood that, before parking, the embodiments of the present application need to determine whether the vehicle's electronic parking function is functioning properly, that is, to detect whether the vehicle meets preset parking conditions, so as to ensure that the brake caliper is clamped and released when the electronic parking function is operational. The preset parking conditions include at least one of the following: the vehicle's parking function is enabled; the vehicle's current wheel speed is less than or equal to a preset wheel speed; the locking mechanism is in the first state; and the vehicle's accelerator pedal opening is less than or equal to a preset opening.

[0049] Among them, the preset wheel speed and the preset opening can be set by the technical personnel of this application according to actual conditions, and are not specifically limited; the locking mechanism can be in the first state or the released state.

[0050] During the actual implementation process, as shown in Figure 4, the embodiment of the present application can determine whether the electronic parking function is available based on the EPB switch signal, accelerator pedal signal, torque signal, speed signal, gear signal, wheel speed signal, longitudinal acceleration signal, brake disc temperature status, motor angle signal, electromagnet signal, etc. If these signals are not faulty, it means that the parking operation can be performed, and the parking status can be displayed by the parking light on the instrument panel, thereby improving the user experience.

[0051] Among them, the electronic parking function is a control function based on the whole vehicle being in a stationary state. First, it is determined whether the electronic parking function status is available. The embodiment of the present application can determine the electronic parking function status through vehicle status such as function switch signal, clamping force signal, and electromagnet signal; only when it is determined that the electronic parking function status is operable can the caliper motor be controlled to output the target braking force required for parking.

[0052] In step S303 , after the brake caliper is clamped, the brake caliper is locked to complete parking.

[0053] The parking method of the embodiment of the present application can utilize the parking device of the aforementioned embodiment to park the vehicle. After the brake caliper is clamped, the locking mechanism is controlled to clamp the transmission mechanism. Because the transmission mechanism is unable to transmit power by clamping, the brake caliper can be indirectly locked to achieve parking. This reuse of the caliper motor and transmission mechanism achieves parking, reducing parking costs while conserving space for the brake caliper.

[0054] It should be noted that how to use the locking mechanism to lock the brake caliper to complete parking can refer to the relevant content of the above-mentioned parking device and will not be elaborated here.

[0055] According to one embodiment of the present application, after locking the brake caliper to complete parking, it also includes: detecting whether the vehicle meets the preset parking release condition; if the vehicle meets the preset parking release condition, retracting the locking mechanism and releasing the brake caliper to release the wheel.

[0056] After the vehicle is parked, the embodiment of the present application can retract the locking mechanism based on the user's actual needs and when the vehicle meets corresponding parking release conditions, causing the brake calipers to release the wheels and stop the vehicle. The parking release conditions include: the vehicle's parking function is disabled; the vehicle's current wheel speed is less than or equal to a preset wheel speed; the locking mechanism is in the second state; or the vehicle's accelerator pedal opening is greater than a preset opening. The second state of the locking mechanism is a clamped state.

[0057] The method of parking and releasing the parking position will be described below through specific embodiments, as follows:

[0058] 1. Parking

[0059] (1) Press the electronic parking switch to indicate a parking request.

[0060] (2) After receiving the parking function start signal, the controller collects relevant signals through various sensors, such as the wheel speed sensor collects wheel speed signals, the motor angle sensor collects motor angle signals, etc.

[0061] (3) The controller performs logical operations on the received relevant signals to determine the target braking force required for vehicle parking, and sends a parking clamping request signal to the motor brake actuator and a locking signal to the electromagnetic actuator when multiple conditions are met, such as the vehicle's current wheel speed is zero, the locking mechanism is in a released state, the accelerator pedal is released, and the pedal opening is less than or equal to the preset opening.

[0062] (4) The motor brake actuator controls the caliper motor to output the target braking force, and transmits the target braking force to the brake caliper through the transmission mechanism, so that the brake caliper is clamped. After the brake caliper is clamped, the electromagnetic actuator controls the locking mechanism to perform the locking action to prevent the transmission mechanism from rotating and complete parking.

[0063] 2. Parking Release

[0064] (1) The electronic parking switch is released, indicating a parking release request.

[0065] (2) After receiving the electronic parking function shutdown signal, the controller collects relevant signals through various sensors, such as the wheel speed sensor collects the wheel speed signal, the motor angle sensor collects the motor angle signal, etc.

[0066] (3) The controller performs logical operations on the received signals and sends a parking release request signal to the motor brake actuator and a lock release signal to the electromagnetic actuator when multiple conditions are met, such as the vehicle's current wheel speed is zero, the locking mechanism is in a clamped state, the accelerator pedal is depressed and the pedal opening is greater than a preset opening.

[0067] (4) The electromagnetic actuator controls the electromagnet to retract the pawl, and the brake caliper releases the wheel, completing the parking release.

[0068] In summary, the parking method of this application can control the caliper motor to output a target braking force, clamping the brake caliper when the vehicle meets preset parking conditions. After the brake caliper is clamped, the locking mechanism locks the brake caliper to complete parking. Thus, by utilizing the same set of brake calipers and caliper motors for both braking and parking, the number of components required for parking can be effectively reduced, lowering parking costs while conserving space for the brake caliper.

[0069] In addition, the embodiments of the present application also protect a vehicle, which may include a parking device as described in the above embodiments.

[0070] This embodiment also provides a computer-readable storage medium, which stores computer program code. When the computer program code runs on a computer, the computer executes the above-mentioned related method steps to implement a parking method provided by the above embodiment.

[0071] Among them, the device, computer-readable storage medium or chip provided in this embodiment is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be repeated here.

[0072] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0073] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0074] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A parking device, wherein: The device comprises: A brake caliper and a caliper motor for outputting a target braking force during braking or parking; A transmission mechanism, used for transmitting the target braking force during braking or parking to the brake caliper, wherein the target braking force during parking causes the brake caliper to be clamped; The locking mechanism is connected to the transmission mechanism, and after the brake caliper is clamped by force, the transmission mechanism is clamped to achieve the locking of the brake caliper and complete parking.

2. The device according to claim 1, wherein: The locking mechanism comprises: Electromagnetic parts; A push rod mechanically connected to the electromagnetic member; A locking member mechanically connected to the push rod, when parking, the electromagnetic member drives the push rod to release the locking member, the locking member clamps the transmission mechanism to achieve the locking of the brake caliper, and when parking is released, the electromagnetic member drives the push rod to retract the locking member.

3. A vehicle, wherein: It comprises a parking device as described in any one of claims 1-2.

4. A parking method, wherein: The method uses the parking device according to any one of claims 1 to 2 to park the vehicle, wherein the method comprises the following steps: Obtain the target braking force required for parking; Controlling the caliper motor to output the target braking force, wherein the target braking force causes the brake caliper to be clamped; After the brake caliper is clamped by force, the brake caliper is locked to complete parking.

5. The method according to claim 4, wherein: The locking of the brake caliper to complete parking comprises: The locking mechanism is controlled to clamp the transmission mechanism of the caliper motor.

6. The method according to claim 4, wherein: Before controlling the caliper motor to output the target braking force, the method further includes: Detect whether the vehicle meets the preset parking conditions; If the vehicle meets the preset parking condition, the caliper motor is controlled to output the target braking force.

7. The method according to claim 6, wherein: The preset parking conditions include multiple of the following conditions: The parking function of the vehicle is turned on; The current wheel speed of the vehicle is less than or equal to the preset wheel speed; The locking mechanism is in a first state; The opening degree of the accelerator pedal of the vehicle is less than or equal to a preset opening degree.

8. The method according to claim 4, wherein: After the brake caliper is locked to complete parking, the method further includes: Detecting whether the vehicle meets the preset parking release conditions; If the vehicle meets the preset parking release condition, the locking mechanism is retracted and the brake caliper releases the vehicle. wheel.

9. The method according to claim 8, wherein: The preset parking release conditions include multiple of the following conditions: The parking function of the vehicle is turned off; The current wheel speed of the vehicle is less than or equal to the preset wheel speed; The locking mechanism is in a second state; The opening degree of the accelerator pedal of the vehicle is greater than a preset opening degree.

10. A computer-readable storage medium, wherein: The computer-readable storage medium stores a computer program, and when the computer program is executed, the parking method according to any one of claims 4 to 9 is implemented.

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