Parking device, parking method, vehicle and storage medium

Abstract

The invention provides a parking device, a parking method, a vehicle and a storage medium, the device is applied to the technical field of vehicle control, and the device comprises a brake caliper, a transmission mechanism, a caliper motor and a locking mechanism. Wherein the caliper motor outputs target braking force during braking or parking, the transmission mechanism transmits the target braking force to the braking calipers, the target braking force during parking enables the braking calipers to be stressed and clamped, after the braking calipers are stressed and clamped, the transmission mechanism is clamped through the locking mechanism to achieve locking of the braking calipers, and parking is completed. Therefore, according to the device, braking and parking are achieved through the same set of braking calipers and the calipers motor, a parking motor and related devices do not need to be additionally arranged, the number of devices needed for parking can be effectively reduced, the parking cost is reduced, and meanwhile the arrangement space of the braking calipers is saved.

Description

Technical Field

[0001] 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

[0002] 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.

[0003] 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 achieve the transmission of force from the electronic parking motor to the piston, resulting in problems such as cost and waste of resources. Summary of the invention

[0004] 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 to additionally arrange parking motors and related components. This can effectively reduce the components required for parking, reduce parking costs and save space for arranging brake calipers.

[0005] 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 and complete parking.

[0006] 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, so that parking is achieved by reusing the brake caliper and the caliper motor, without the need to additionally arrange the 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.

[0007] 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, wherein 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, and when parking is released, the electromagnetic component drives the push rod to retract the locking component.

[0008] 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.

[0009] In a second aspect, a vehicle is provided, comprising a parking device as described in any one of the above embodiments.

[0010] In a third aspect, a parking method is provided, which uses the parking device as described in the above embodiment to park, and includes the following steps: obtaining the target braking force required for parking; controlling the caliper motor to output the target braking force, and the target braking force causes the brake caliper to be clamped; after the brake caliper is clamped, locking the brake caliper to complete parking.

[0011] Through the above technical solution, the embodiment of the present application can control the caliper motor to output the target braking force when the vehicle meets the preset parking conditions, so that the brake caliper is clamped, and after the brake caliper is clamped, the locking mechanism is used to lock the brake caliper to complete the parking. Therefore, by reusing the brake caliper and the caliper motor that realize the braking function, users can complete parking more safely and accurately, reduce parking costs, and save layout space.

[0012] 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 the caliper motor.

[0013] In combination with the third aspect and the above-mentioned implementation method, before controlling the caliper motor to output the target braking force, it also includes: detecting whether the vehicle meets the preset parking condition; if the vehicle meets the preset parking condition, controlling the caliper motor to output the target braking force.

[0014] 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 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 the first state; the opening of the accelerator pedal of the vehicle is less than or equal to the preset opening.

[0015] 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 condition; if the vehicle meets the preset parking release condition, retracting the locking mechanism and the brake caliper releases the wheel.

[0016] In combination with the third aspect and the above-mentioned implementation method, 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 the second state; the opening of the accelerator pedal of the vehicle is greater than the preset opening.

[0017] 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 third aspect or any possible implementation of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a block diagram of a parking device according to an embodiment of the present invention;

[0019] Figure 2 is a partial structural example diagram of a parking device according to an embodiment of the present invention;

[0020] Figure 3 is a flow chart of a parking method according to an embodiment of the present invention;

[0021] Figure 4 This is a diagram of the electronic parking function control interface described in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0023] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0024] Figure 1 It is a schematic diagram of the structure of the parking device provided in an embodiment of the present application.

[0025] For example, Figure 1 As shown, the parking device 10 may include: a brake caliper 100 , a caliper motor 200 , a locking mechanism 300 and a transmission mechanism 400 .

[0026] Among them, the transmission mechanism 400 is connected to the brake caliper 100 and the caliper motor 200 respectively, 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; the locking mechanism 300 clamps the transmission mechanism 400 after the brake caliper 100 is clamped to achieve the locking of the brake caliper 100 and complete the parking.

[0027] It can be understood that for a vehicle equipped with a braking mechanism including 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, and realize the parking function by reusing the braking functions of the brake caliper 100, the caliper motor 200 and the transmission mechanism 400 in cooperation with the locking mechanism 300. Thus, parking can be realized 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 realize the parking function 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.

[0028] It should be noted that the target braking force during braking can be determined according to the travel of the brake pedal, and the target braking force during parking can be determined according to the slope during parking, etc., and the target braking force during parking is usually required to keep the vehicle stationary. For example, during parking, the target braking force corresponding to the current slope can be determined by querying the relationship table between the parking slope and the target braking force required for parking. At this time, the target braking force can also be called the parking braking force. The caliper motor 200 outputs the target braking force, and the locking mechanism 300 clamps the transmission mechanism 400 to prevent the transmission mechanism 400 from rotating, thereby achieving parking.

[0029] According to an embodiment of the present application, the locking mechanism 300 may include: an electromagnetic member, a push rod 1 and a locking member.

[0030] 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.

[0031] The electromagnetic element can generate magnetism by energizing, for example, the electromagnetic element is constructed as follows: Figure 2 The electromagnet 6 shown in the figure is not specifically limited. The locking member can be as follows Figure 2 The ratchet 2 shown is taken as an example in the following embodiments.

[0032] 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 the 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.

[0033] Specifically, Figure 2 Taking the structure diagram shown 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, the electromagnet 6 controls the push rod 1 to release the pawl 2, and clamps the ratchet 3 through the pawl 2 during parking, thereby clamping the motor drive shaft 4 of the caliper motor 200. The parking process of the parking device 10 will be described below:

[0034] (1) Detecting a user's parking request, such as when the electronic parking switch is pressed;

[0035] (2) If a parking request from the user is detected, when 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 outputted through the caliper motor 200, and the transmission mechanism 400 transmits the target braking force outputted 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.

[0036] 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 to return to an initial position.

[0037] like Figure 2 As shown, when it is detected that the user stops parking, when the EPB system detects that the solenoid valve 6 is in a closed state and the parking function is in a closed state, the embodiment of the present application can control the push rod 1 to retract the pawl 2 through the electromagnet 6, and under the action of the return spring 5, the pawl 2 returns to the initial position. The initial position can be the position of the pawl 2 before parking.

[0038] In summary, the parking device of the embodiment of the present application can transmit the target braking force through the transmission mechanism when parking to clamp the brake caliper, 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 the 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.

[0039] 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 of the above embodiment to park the vehicle.

[0040] Figure 3 A schematic flowchart of a parking method provided in an embodiment of the present application.

[0041] For example, Figure 3 As shown, the method comprises the following steps:

[0042] In step S301 , a target braking force required for parking is obtained.

[0043] 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, due to the increase in resistance, a larger braking force is required to keep the vehicle stably parked.

[0044] 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.

[0045] 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.

[0046] According to an 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 condition; if the vehicle meets the preset parking condition, controlling the caliper motor to output the target braking force.

[0047] It is understandable that, before parking, the embodiment of the present application needs to determine whether the electronic parking function of the vehicle can operate normally, that is, to detect whether the vehicle meets the preset parking conditions, so as to ensure that the brake caliper is clamped and released when the electronic parking function is in an operable state. Among them, the preset parking conditions include at least 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 the first state; the opening of the vehicle's accelerator pedal is less than or equal to the preset opening.

[0048] Among them, the preset wheel speed and the preset opening can be set by the technical personnel of the present application according to actual conditions, without specific limitation; the locking mechanism can be in the first state or the released state.

[0049] In the actual implementation process, Figure 4 As shown, 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.

[0050] 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.

[0051] In step S303, after the brake caliper is clamped, the brake caliper is locked to complete parking.

[0052] The parking method of the embodiment of the present application can use the parking device of the above embodiment to park the vehicle. After the brake caliper is clamped by force, the locking mechanism is controlled to clamp the transmission mechanism. Since the transmission mechanism cannot transmit power by clamping the transmission mechanism, the brake caliper can be indirectly locked to achieve parking. Therefore, the caliper motor and the transmission mechanism are reused to achieve parking, which reduces the parking cost and saves the layout space of the brake caliper.

[0053] 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, which will not be elaborated here.

[0054] According to an embodiment of the present application, after the locking brake caliper completes parking, it also includes: detecting whether the vehicle meets a preset parking release condition; if the vehicle meets the preset parking release condition, retracting the locking mechanism and the brake caliper releases the wheel.

[0055] The embodiment of the present application can retract the locking mechanism after the vehicle is parked according to the actual needs of the user and when the vehicle meets the corresponding parking release conditions, so that the brake caliper releases the wheel and stops parking. Among them, the parking release conditions include: 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 the second state; the opening of the vehicle's accelerator pedal is greater than the preset opening. Among them, the second state of the locking mechanism is the clamping state.

[0056] The method of parking and releasing the parking position will be described below through specific embodiments, as follows:

[0057] 1. Parking

[0058] (1) Pressing the electronic parking switch indicates a parking request.

[0059] (2) After receiving the parking function start 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.

[0060] (3) The controller performs logical operations on the received related signals to determine the target braking force required for parking the vehicle, 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 a preset opening.

[0061] (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, thereby completing parking.

[0062] 2. Parking Release

[0063] (1) The electronic parking switch is released, indicating a parking release request.

[0064] (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.

[0065] (3) The controller performs a logical operation on the received signal 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 pressed and the pedal opening is greater than a preset opening.

[0066] (4) The solenoid actuator controls the solenoid to retract the pawl, and the brake caliper releases the wheel to complete the parking release.

[0067] In summary, the parking method of the present application can control the caliper motor to output the target braking force when the vehicle meets the preset parking conditions, so that the brake caliper is clamped, and after the brake caliper is clamped, the locking mechanism is used to lock the brake caliper to complete the parking. Therefore, by using the same set of brake calipers and caliper motors to achieve braking and parking, the components required for parking can be effectively reduced, the parking cost can be reduced, and the layout space of the brake caliper can be saved.

[0068] In addition, the embodiments of the present application also protect a vehicle, which may include a parking device as described in the above embodiments.

[0069] This embodiment also provides a computer-readable storage medium, in which a computer program code is stored. When the computer program code is executed on a computer, the computer executes the above-mentioned related method steps to implement a parking method provided by the above embodiment.

[0070] 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.

[0071] 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 assigned to 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.

[0072] In the embodiments provided in the present 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 only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, 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.

[0073] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A parking device, characterized in that: 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, characterized in that 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, characterized in that: It comprises a parking device as described in any one of claims 1-2.

4. A parking method, characterized in that: 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, characterized in that 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, characterized in that 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, characterized in that 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, characterized in that 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 wheel.

9. The method according to claim 8, characterized in that 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, characterized in that: 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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