CN113696876A - Vehicle parking control method, control device, control system and vehicle - Google Patents
Vehicle parking control method, control device, control system and vehicle Download PDFInfo
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- CN113696876A CN113696876A CN202111112708.2A CN202111112708A CN113696876A CN 113696876 A CN113696876 A CN 113696876A CN 202111112708 A CN202111112708 A CN 202111112708A CN 113696876 A CN113696876 A CN 113696876A
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- vehicle
- parking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
- B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2250/00—Monitoring, detecting, estimating vehicle conditions
- B60T2250/04—Vehicle reference speed; Vehicle body speed
Abstract
The application relates to a vehicle parking control method, a control device, a control system and a vehicle. The vehicle parking control method comprises the following steps: the method comprises the steps of obtaining the working state of an electronic parking controller of the vehicle, the speed of the vehicle and the treading state of a brake pedal of the vehicle; and a connection step, namely controlling the electronic parking controller or a storage battery on the vehicle to be electrically connected with a parking actuator on the vehicle according to the working state of the electronic parking controller, the speed of the vehicle and the treading state of a brake pedal of the vehicle. The application introduces the storage battery as the standby driving power supply of the parking actuator, so that the aim of EPB redundancy control can be achieved by only adopting one electronic brake controller, the technical difficulty is low, and the cost is lower.
Description
Technical Field
The present application relates to the field of vehicle technologies, and in particular, to a vehicle parking control method, a control device, and a control system.
Background
In the related art, a vehicle generally implements a parking function of the vehicle through an EPB (Electrical Park Brake). The electronic parking brake system generally includes an electronic parking switch, an electronic parking controller, and a parking actuator. In order to be used as a backup for each other, two electronic parking controllers are usually provided, and the control software of the EPB is respectively placed in the two electronic parking controllers, and the two electronic parking controllers independently control the parking actuator, such as a caliper, on one side. When one electronic parking controller loses control over the electronic parking actuator on one side, the electronic parking controller on the other side can also control the electronic parking actuator on the one side, and therefore the parking function can be completed under the condition that one electronic parking controller fails.
It can be seen that the integration of the control software of the EPB into the two electronic parking controllers requires the mutual coordination control of the two electronic parking controllers, the technology is complicated, and the two electronic parking controllers significantly increase the hardware cost, have a high use threshold, and cannot be used in low-end vehicle types.
Disclosure of Invention
In order to solve or partially solve the problems in the related technology, the application provides a vehicle parking control method, a control device, a control system and a vehicle.
A first aspect of the present application provides a vehicle parking control method, including the steps of: the method comprises the steps of obtaining the working state of an electronic parking controller of the vehicle, the speed of the vehicle and the treading state of a brake pedal of the vehicle; and a connection step, namely controlling the electronic parking controller or a storage battery on the vehicle to be electrically connected with a parking actuator on the vehicle according to the working state of the electronic parking controller, the speed of the vehicle and the treading state of a brake pedal of the vehicle.
Further, in the vehicle parking control method described above, the connecting step further includes: a first connection substep of controlling the electronic parking controller to be electrically connected with a parking actuator of the vehicle when the electronic parking controller is in a normal state; and a second connection substep, when the electronic parking controller is in an abnormal state and the vehicle speed is zero and the trampling time of the brake pedal exceeds a first preset time, controlling a storage battery on the vehicle to be electrically connected with the parking actuator so that the storage battery drives the parking actuator to act.
Further, the vehicle parking control method described above further includes, after the connecting step: and a disconnection step of controlling the battery to be disconnected from the parking actuator when the battery is electrically connected with the parking actuator for more than a second preset time.
The second aspect of the present application provides a vehicle parking control apparatus comprising: the acquisition module is used for acquiring the working state of an electronic parking controller of the vehicle, the speed of the vehicle and the treading state of a brake pedal of the vehicle; and the connecting module is used for controlling the electronic parking controller or a storage battery on the vehicle to be electrically connected with a parking actuator on the vehicle according to the working state of the electronic parking controller, the speed of the vehicle and the trampling state of a brake pedal of the vehicle.
Further, in the above vehicle parking control apparatus, the connection module further includes: the first connecting sub-module is used for controlling the electronic parking controller to be electrically connected with the parking actuator when the electronic parking controller is in a normal state; and the second connecting submodule is used for controlling a storage battery on the vehicle to be electrically connected with the parking actuator when the electronic parking controller is in an abnormal state, the vehicle speed is zero, and the trampling time of the brake pedal exceeds first preset time, so that the storage battery drives the parking actuator to act.
Further, the vehicle parking control apparatus described above further includes: and the disconnection module is used for controlling the storage battery to be disconnected from the parking actuator when the electrical connection between the storage battery and the parking actuator exceeds a second preset time.
A third aspect of the present application provides a vehicle parking control system, including: the control device is used for electrically connecting with an electronic parking controller of a vehicle and used for acquiring the working state of the electronic parking controller; the control device is also used for being electrically connected with an electronic control unit of a vehicle and used for acquiring the speed of the vehicle and the treading state of a brake pedal; a storage battery; the two input ends of the change-over switch are respectively and electrically connected with the storage battery and the electronic parking controller, and the output end of the change-over switch is electrically connected with the parking actuator; the control device is electrically connected with the control end of the change-over switch and used for controlling the change-over switch to enable the electronic parking controller to be communicated with the parking actuator when the electronic parking controller is in a normal working state, and controlling the change-over switch to enable the storage battery to be communicated with the parking actuator when the electronic parking controller is in an abnormal working state, the vehicle speed is zero, and the trampling time of a brake pedal exceeds a first preset time.
Further, in the above vehicle parking control system, the control device is further configured to control the battery to be disconnected from the parking actuator when the battery is electrically connected to the parking actuator for more than a second preset time.
Further, in the above vehicle parking control system, there are two parking actuators, and an output end of the transfer switch is electrically connected to both of the two parking actuators, or the transfer switch is a combination relay.
A fourth aspect of the present application provides a vehicle provided with any one of the vehicle parking control systems described above.
The technical scheme provided by the application can comprise the following beneficial effects:
in this application, when electronic brake controller is in normal operating condition, carry out the parking through electronic brake controller drive parking executor, when electronic brake controller became invalid, carry out the parking through battery drive parking executor, compare with the correlation technique, because this application has introduced the battery as the reserve driving power supply of parking executor, so only adopt an electronic brake controller can reach EPB redundant control's purpose, realize the conversion between electronic parking controller and battery and the parking executor through controlling means and change over switch and be connected, not only the technical degree of difficulty is low, and the cost is also lower, especially, be fit for using on low end motorcycle type.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
FIG. 1 is a schematic flow chart diagram illustrating a vehicle park control method according to an embodiment of the present application;
FIG. 2 is a sub-flowchart illustrating the connection steps in the parking control method of the vehicle according to the embodiment of the present application;
FIG. 3 is a schematic flow chart of a vehicle parking control method according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a parking control apparatus for a vehicle according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a connection module in the parking control apparatus of the vehicle according to the embodiment of the present application;
FIG. 6 is a schematic structural diagram of a vehicle parking control system according to an embodiment of the present application;
fig. 7 is another schematic structural diagram of a vehicle parking control system according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
A vehicle generally implements a parking function of the vehicle through an electronic parking brake system, which generally includes an electronic parking switch, an electronic parking controller, and two parking actuators. In order to be standby for each other, the electronic parking controllers are also generally set to be two, control software of the electronic parking brake system is respectively placed in the two electronic parking controllers, the two electronic parking controllers control the parking actuator on one side independently, and when one electronic parking controller loses control over the electronic parking actuator on one side, the electronic parking controller on the other side can also control the parking actuator on the side through the other electronic parking controller. However, in this method, the two electronic parking controllers need to be coordinated with each other for control, the technology is complex, the two electronic parking controllers significantly increase the hardware cost, the use threshold is high, and the method cannot be used in low-end vehicle types.
In order to solve the problems, the embodiment of the application provides a vehicle parking control method which is low in technical difficulty and cost and suitable for general application.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a vehicle parking control method according to an embodiment of the present application.
Referring to fig. 1, the vehicle parking control method includes the steps of:
the obtaining step S1 obtains the operating state of the electronic parking controller of the vehicle, the vehicle speed of the vehicle, and the tread state of the brake pedal of the vehicle.
And acquiring the working state of the electronic parking controller from the CAN network. The electronic parking controller CAN send a state signal of the electronic parking controller to a CAN network on the vehicle in real time, and when the electronic parking controller works normally, the electronic parking controller sends a normal working state signal to the CAN network; and when the electronic parking controller cannot work normally, sending a state signal of the fault of the electronic parking controller to the CAN network. In addition, the CAN network also acquires an operating state signal of the vehicle actuator.
A vehicle speed signal of a vehicle and a depression state signal of a brake pedal are acquired from an electronic control unit.
If the acquired vehicle speed is zero, the vehicle is in a state of waiting for parking; if the acquired vehicle speed is nonzero, the vehicle is in a running state
The stepping states of the brake pedal are divided into two types: a depressed state or an undepressed state. When the brake pedal is pedaled by a driver, the pedaled state signals are all high level and are irrelevant to the pedaled amplitude of the brake pedal; when the brake pedal is not stepped on by the driver, the stepping state signal is at a low level. Of course, when the brake pedal is stepped by the driver, the stepping state signals are all low level; when the brake pedal is not stepped on by the driver, the stepping state signal is at a high level.
And step S2, controlling the electronic parking controller or the storage battery on the vehicle to be electrically connected with the parking actuator on the vehicle according to the working state of the electronic parking controller, the speed of the vehicle and the stepping state of the brake pedal of the vehicle.
The working state of the electronic parking controller is divided into a normal state and an abnormal state.
And judging whether the vehicle has a parking requirement according to the vehicle speed of the vehicle and the stepping state of the brake pedal of the vehicle, and when the vehicle speed is zero and the brake pedal is in the stepping state, indicating that the vehicle has the parking requirement. At the moment, if the electronic parking controller is in a normal state, the electronic parking controller controls the parking actuator to act, so that the vehicle parking function is realized, and if the electronic parking controller is in an abnormal state, the storage battery controls the parking actuator to act, so that the vehicle parking function is realized.
In the embodiment of the application, when electronic brake controller is in normal operating condition, carry out the parking through electronic brake controller drive parking executor, when electronic brake controller became invalid, carry out the parking through battery drive parking executor, compare with correlation technique, because the battery that this application embodiment introduced the vehicle is as the reserve drive power supply of parking executor, so only adopt an electronic brake controller can reach EPB redundant control's purpose, this application embodiment not only the technical degree of difficulty is low, and the cost is also lower, be fit for popularizing and applying, especially, be fit for using on low end motorcycle type.
Referring to fig. 2, the connecting step S2 further includes:
and a first connection substep S21, when the electronic parking controller is in a normal state, controlling the electronic parking controller to be electrically connected with a parking actuator of the vehicle.
The electronic parking controller can be electrically connected with the parking actuator through the change-over switch. Specifically, the electronic parking controller is electrically connected with a first input end of the change-over switch, and the parking actuator is electrically connected with an output end of the change-over switch. And when the electronic parking controller is judged to be in a normal working state, sending a control signal to the change-over switch to control the change-over switch to electrically connect the electronic parking controller with a parking actuator of the vehicle, and in the mode, driving the parking actuator by the electronic parking controller to complete a parking action.
In specific implementation, the number of the parking actuators, for example, the number of the calipers may be two, the two parking actuators may be respectively installed on the two rear wheels of the vehicle, and the electronic parking controller is electrically connected to the two parking actuators through the transfer switch at the same time to perform parking braking on the two rear wheels of the vehicle.
And a second connection substep S22, when the electronic parking controller is in an abnormal state and the vehicle speed is zero, and the brake pedal is stepped for a time exceeding a first preset time, controlling the storage battery on the vehicle to be electrically connected with the parking actuator, so that the storage battery drives the parking actuator to act.
The vehicle is provided with a storage battery, the storage battery is electrically connected with a second input end of the change-over switch, and when the following three conditions are met, a control signal is sent to the change-over switch, so that the change-over switch breaks the electrical connection between the electronic parking controller and the parking actuator, the electrical connection between the storage battery and the parking actuator is established, and the storage battery provides a power supply for the action of the parking actuator.
The three conditions are specifically: 1) judging that the electronic parking controller is in an abnormal working state; 2) the vehicle speed is zero; 3) the brake pedal is in a treaded state and the treading time exceeds a first preset time.
It should be noted that, in the specific implementation, the stepping time of the brake pedal may be determined according to the actual situation, and this embodiment does not limit the stepping time.
In specific implementation, the change-over switch may be a combined relay, the combined relay is provided with two input ends, one output end and one control end, the two input ends are switchably and electrically connected with the one output end, and the control end is used for receiving a control signal and establishing connection between one of the input ends and the output end according to the control signal.
In the embodiment of the application, when the electronic brake controller is in a normal working state, the electronic brake controller drives the parking actuator to park, and when the electronic brake controller fails, the storage battery drives the parking actuator to park, so that the aim of EPB redundant control can be fulfilled only by adopting one electronic brake controller.
Depending on the characteristics of the parking actuator, if the duration of the power supply exceeds a set time, i.e., if the clamping time of the parking actuator exceeds a set time, the parking actuator may be damaged.
Based on this, referring to fig. 3, in another embodiment, the present application further includes, after the connecting step S2 in the embodiment shown in fig. 1: and a disconnection step S3 of controlling the battery to be disconnected from the parking actuator when the battery is electrically connected to the parking actuator for more than a second preset time. That is, after the clamping time of the parking actuator exceeds the second preset time, the storage battery stops supplying power to the parking actuator, so that the parking actuator is prevented from being damaged due to overlong clamping time.
It should be noted that, in specific implementation, the second preset time may be determined according to an actual situation, and the embodiment of the present application does not limit the second preset time.
Corresponding to the embodiment of the application function implementation method, the application also provides an embodiment of the vehicle parking control device.
Fig. 4 is a schematic structural diagram of a vehicle parking control device according to an embodiment of the present application.
Referring to fig. 4, the vehicle parking control apparatus in the embodiment of the present application includes: the obtaining module 410 is configured to obtain a working state of an electronic parking controller of the vehicle, a speed of the vehicle, and a tread state of a brake pedal of the vehicle. And the connecting module 420 is used for controlling the electronic parking controller or a storage battery on the vehicle to be electrically connected with a parking actuator on the vehicle according to the working state of the electronic parking controller, the speed of the vehicle and the treading state of a brake pedal of the vehicle.
Further, referring to fig. 5, the first connection module 420 includes: the first connection module 421 is configured to control the electronic parking controller to be electrically connected to the parking actuator when the electronic parking controller is in a normal state. And the second connecting module 422 is used for controlling the storage battery on the vehicle to be electrically connected with the parking actuator when the electronic parking controller is in an abnormal state and the vehicle speed is zero and the trampling time of the brake pedal exceeds a first preset time, so that the storage battery drives the parking actuator to act.
With continued reference to fig. 4, in other embodiments, the vehicle park control apparatus further includes: and a disconnection module 430 for controlling the battery to be disconnected from the parking actuator when the battery is electrically connected with the parking actuator for more than a second preset time.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Since the method embodiment has the above-described effects, the apparatus embodiment corresponding to the method embodiment also has corresponding technical effects.
Fig. 6 is a schematic structural diagram of a vehicle parking control system according to an embodiment of the present application.
Referring to fig. 6, the vehicle parking control system in the embodiment of the present application includes: control device 620, battery 630 and transfer switch 640.
The control device 620 is electrically connected to the electronic parking controller 610 of the vehicle, and the control device 620 is configured to obtain a working state of the electronic parking controller 610. Specifically, the control device 620 may be a control chip, such as a single chip, a digital signal processor, or a gateway, as shown in fig. 7. The control device 620 is electrically connected to the electronic parking controller 610 through a CAN, LIN, or other network, and the control device 620 obtains operating parameters of the electronic parking controller 610 through the network, where the operating parameters may include an electronic parking operating state signal, an electronic parking fault signal, and the like.
The control device 620 is also electrically connected to an electronic control unit of the vehicle, and is configured to acquire a vehicle speed and a depression state of a brake pedal of the vehicle. Specifically, the control device 620 is electrically connected to the electronic control unit through a CAN and LIN network, and the control device 620 acquires the vehicle speed of the vehicle through the network connection. If the acquired vehicle speed is zero, the vehicle is in a state of waiting for parking; if the acquired vehicle speed is nonzero, the vehicle is in a running state.
The stepping states of the brake pedal are divided into two types: a depressed state or an undepressed state. When the brake pedal is pedaled by a driver, the pedaled state signals are all high level and are irrelevant to the pedaled amplitude of the brake pedal; when the brake pedal is not stepped on by the driver, the stepping state signal is at a low level. Of course, the stepping state signal may be at a low level when the brake pedal is stepped on by the driver; when the brake pedal is not stepped on by the driver, the stepping state signal is at a high level.
The battery 630 may be equipped on a vehicle, and if the vehicle is an electric vehicle, a part of the cells connected in series may also be selected from power batteries of the electric vehicle as the battery, and the embodiment does not limit the specific form of the battery 630.
Two input ends of the transfer switch 640 are respectively electrically connected with the battery 630 and the electronic parking controller 610, and an output end is electrically connected with the parking actuator.
Specifically, the transfer switch may be a combination relay, and the combination relay includes two input terminals, an output terminal and a control terminal, and when the control terminal receives a control signal, the combination relay connects or disconnects one of the input terminals and the output terminal according to the control signal. Referring to fig. 7, two input terminals of the combination relay are respectively connected to a power supply harness of the storage battery 630 and a power supply harness of the electronic parking controller 610. The number of the parking actuators may be two, such as a left parking actuator 650 and a right parking actuator 660 shown in fig. 6 and 7, which may be electronic calipers and the like, the left parking actuator 650 brakes a left rear wheel of the vehicle, the right parking actuator 660 brakes a right rear wheel of the vehicle, and an output end of the combination relay is connected to both power supply harnesses of the left parking actuator 650 and the right parking actuator 660. The combination relay switchably connects the electronic parking controller 610 and the secondary battery 630 to the two parking actuators according to a control signal received by the control terminal. In the present embodiment, the left and right sides are relative to the direction facing the vehicle.
It should be understood that, in the implementation, the combined relay in the embodiment of the present application may be replaced by other devices known to those skilled in the art, such as an H-bridge circuit using a combination of MOS transistors.
The control device 620 is electrically connected to the control end of the switch 640, and is configured to control the switch 640 to communicate the electronic parking controller 610 with the parking actuator when the electronic parking controller 310 is in the normal state, and to control the switch 640 to communicate the battery 630 with the parking actuator when the electronic parking controller 610 is in the abnormal state, the vehicle speed is zero, and the time for which the brake pedal is stepped exceeds a first preset time.
Specifically, referring to fig. 7, the control device 620 is a gateway, the switch 640 is a combined relay, a control pin of the combined relay is connected to one control pin of the gateway, and the gateway and the combined relay are connected by a hard wire. When the gateway detects that the electronic parking controller 610 works normally, the control pin of the gateway is at a low level, at this time, the combined relay connects the electronic parking controller 610 with the power supply wiring harness of the left parking actuator 650 and the right parking actuator 660, the state of the relay shown in fig. 7 is the state that the electronic parking controller 610 is connected with the left parking actuator 650 and the right parking actuator 660, the electronic parking controller 610 controls the left parking actuator 650 and the right parking actuator 660 to complete the parking function,
when the gateway detects that the electronic parking controller 610 fails, the gateway judges that the electronic parking controller 610 is in an abnormal working state, the gateway continues to judge the vehicle speed and the trampling state of a brake pedal, if the vehicle speed is zero at the moment, the brake pedal is in the trampling state, and the trampling time exceeds first preset time, the gateway judges that the vehicle has a parking requirement, at the moment, a control pin of the gateway is changed into a high level, a control combined relay connects a storage battery 630 with power supply harnesses of a left parking actuator 650 and a right parking actuator 660, the storage battery 630 directly supplies power to the left parking actuator 650 and the right parking actuator 660, and the left parking actuator 650 and the right parking actuator 660 are driven to be clamped tightly so as to complete a parking function. The relay state shown in fig. 7 is a state in which the electronic parking controller 610 is connected with the left and right parking actuators 650 and 660.
It should be understood that, in implementation, when the gateway detects that the electronic parking controller 610 works normally, the control pin of the gateway may also be at a high level; when the gateway detects that the electronic parking controller 610 is not working normally, the control pin of the gateway is at low level.
It should be noted that, in specific implementation, the first preset time may be determined according to an actual situation, and may be, for example, 10s or 8s, and the specific value of the first preset time is not limited in this embodiment.
It will be appreciated by those skilled in the art that the electronic parking controller 610 should also be electrically connected to other controllers 670 on the vehicle for data transfer. Meanwhile, the electronic parking controller 610 should be further connected with an electronic parking switch 680, and the electronic parking controller 610 is controlled to be turned on and off by the switch of the electronic parking switch 680.
In the embodiment of the application, when electronic brake controller is in a normal working state, carry out the parking through electronic brake controller drive parking executor, when electronic brake controller became invalid, carry out the parking through battery drive parking executor, compared with the prior art, because the embodiment of the application has introduced the battery as the reserve driving power supply of parking executor, so only adopt an electronic brake controller can reach EPB redundant control's purpose, and realize the conversion connection between electronic parking controller and battery and the parking executor through controlling means and change over switch, not only the technical difficulty is low, and the cost is also lower, be suitable for popularization and application, especially be fit for using on low-end motorcycle type.
Depending on the characteristics of the parking actuator, if the duration of the power supply exceeds a set time, i.e., if the clamping time of the parking actuator exceeds a set time, the parking actuator may be damaged. Based on this, control means 620 is further configured to control battery 630 to be disconnected from the parking actuator when battery 630 is electrically connected to the parking actuator for more than a second preset time.
The second preset time may be calibrated with reference to the clamping time of the electronic brake controller 610 controlling the parking actuator. For example, the time to control the clamping of the parking actuator may be set with reference to the time to control the clamping of the parking actuator by the electronic parking controller 610, for example, 2 s. In addition, the second preset time can be calibrated according to actual conditions, and for some parking actuators, the parking actuator cannot be damaged when the 14V electricity is supplied for 30s, so that the second preset time is less than 30 s. When the left parking actuator 650 and the right parking actuator 660 reach the second preset time, the control pin of the control device 620 outputs a control signal to the combination relay, and the combination relay controls the power supply connection between the battery 630 and the left parking actuator 650 and the right parking actuator 660 to be disconnected after receiving the control signal.
It should be noted that, in specific implementation, a specific value of the second preset time may be set according to an actual situation, and the specific value of the second preset time is not limited in this embodiment.
In summary, the embodiment of the application realizes the redundancy control of the electronic parking brake system by introducing the storage battery, the control device and the change-over switch, reduces the technical difficulty and the technical cost, and is easy to popularize and use.
The embodiment of the application also provides a vehicle which is provided with any one of the vehicle parking control systems. The specific implementation process of the vehicle may refer to the above description, and the detailed description of the embodiment is omitted here.
Since the vehicle parking control system has the above-described effects, the vehicle having the parking control system also has corresponding technical effects.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A vehicle parking control method characterized by comprising the steps of:
the method comprises the steps of obtaining the working state of an electronic parking controller of the vehicle, the speed of the vehicle and the treading state of a brake pedal of the vehicle;
and a connection step, namely controlling the electronic parking controller or a storage battery on the vehicle to be electrically connected with a parking actuator on the vehicle according to the working state of the electronic parking controller, the speed of the vehicle and the treading state of a brake pedal of the vehicle.
2. The vehicle parking control method according to claim 1, characterized in that the connecting step further includes:
the first connection substep, when the electronic parking controller is in a normal working state, controlling the electronic parking controller to be electrically connected with a parking actuator of the vehicle;
and a second connection substep, when the electronic parking controller is in an abnormal working state and the vehicle speed is zero and the trampling time of the brake pedal exceeds a first preset time, controlling a storage battery on the vehicle to be electrically connected with the parking actuator so that the storage battery drives the parking actuator to act.
3. The vehicle parking control method according to claim 1, further comprising, after the connecting step:
and a disconnection step of controlling the battery to be disconnected from the parking actuator when the battery is electrically connected with the parking actuator for more than a second preset time.
4. A vehicle parking control apparatus, characterized by comprising:
the acquisition module is used for acquiring the working state of an electronic parking controller of the vehicle, the speed of the vehicle and the treading state of a brake pedal of the vehicle;
and the connecting module is used for controlling the electronic parking controller or a storage battery on the vehicle to be electrically connected with a parking actuator on the vehicle according to the working state of the electronic parking controller, the speed of the vehicle and the trampling state of a brake pedal of the vehicle.
5. The vehicle parking control apparatus of claim 4, wherein the connection module further comprises:
the first connecting sub-module is used for controlling the electronic parking controller to be electrically connected with the parking actuator when the electronic parking controller is in a normal state;
the second connecting submodule is used for controlling a storage battery on the vehicle to be electrically connected with the parking actuator when the electronic parking controller is in an abnormal state and the vehicle speed is zero and the trampling time of the brake pedal exceeds a first preset time so as to drive the parking actuator to act by the storage battery
6. The vehicle parking control apparatus according to claim 4, characterized by further comprising:
and the disconnection module is used for controlling the storage battery to be disconnected from the parking actuator when the electrical connection between the storage battery and the parking actuator exceeds a second preset time.
7. A vehicle parking control system, characterized by comprising:
the control device is used for electrically connecting with an electronic parking controller of a vehicle and used for acquiring the working state of the electronic parking controller; the control device is also used for being electrically connected with an electronic control unit of a vehicle and used for acquiring the speed of the vehicle and the treading state of a brake pedal;
a storage battery;
the two input ends of the change-over switch are respectively and electrically connected with the storage battery and the electronic parking controller, and the output end of the change-over switch is electrically connected with the parking actuator;
the control device is electrically connected with the control end of the change-over switch and used for controlling the change-over switch to enable the electronic parking controller to be communicated with the parking actuator when the electronic parking controller is in a normal working state, and controlling the change-over switch to enable the storage battery to be communicated with the parking actuator when the electronic parking controller is in an abnormal working state, the vehicle speed is zero, and the trampling time of a brake pedal exceeds a first preset time.
8. The vehicle parking control system of claim 7, wherein the control means is further configured to control the battery to be disconnected from the parking actuator when the battery is electrically connected to the parking actuator for more than a second preset time.
9. The vehicle parking control system according to claim 7 or 8,
the number of the parking actuators is two, and the output end of the change-over switch is electrically connected with both the two parking actuators; alternatively, the first and second electrodes may be,
the change-over switch is a combined relay.
10. A vehicle characterized by being provided with the vehicle parking control system according to any one of claims 7 to 9.
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| CN202111112708.2A CN113696876A (en) | 2021-09-23 | 2021-09-23 | Vehicle parking control method, control device, control system and vehicle |
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| CN202111112708.2A CN113696876A (en) | 2021-09-23 | 2021-09-23 | Vehicle parking control method, control device, control system and vehicle |
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| CN115230653A (en) * | 2022-08-05 | 2022-10-25 | 合众新能源汽车有限公司 | Parking control method and device |
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