Control methods, devices and storage media for parking charging

Abstract

This application relates to a control method, device, and storage medium for parking and charging. The method includes: acquiring the first motor torque required for charging and the slope of the vehicle; acquiring the corresponding second motor torque based on the slope of the vehicle; determining whether the sum of the first motor torque and the second motor torque is greater than the maximum braking torque of the electronic parking brake system; if the sum of the first motor torque and the second motor torque is less than or equal to the maximum braking torque of the electronic parking brake system, then controlling the vehicle to park and charge according to a parking command. This technical solution avoids unexpected displacement of the vehicle when charging on a slope, achieving safe parking of the vehicle while charging on a slope, while reducing the current and noise of the electronic parking brake and extending the lifespan of the electronic parking brake system.

Description

Technical Field

[0001] This application belongs to the field of automotive parking control technology, specifically relating to a parking charging control method, device, and computer-readable storage medium. Background Technology

[0002] With economic development and under the government's advocacy, people are paying more and more attention to energy conservation and emission reduction, and new energy vehicles are becoming increasingly popular in people's lives. Currently, in order to improve range and fast charging, new energy vehicles are gradually adopting power source voltages higher than the grid voltage, such as 800V. When charging a new energy vehicle based on this solution, the vehicle needs to be charged at a higher voltage, which will cause the motor to generate torque during charging. This torque is transmitted to the wheel ends. Although the vehicle is kept stationary by the Electronic Park Brake (EPB) system, the vehicle may still be affected by the torque generated by the motor during charging, resulting in unexpected displacement.

[0003] In order to address the issue of unexpected vehicle displacement when charging on a slope, the electronic parking brake system can keep the vehicle stationary by applying its maximum braking force. However, this approach results in increased noise and reduced lifespan for the electronic parking brake system. Summary of the Invention

[0004] The purpose of this application is to provide a control method, device and computer-readable storage medium for parking and charging, to avoid unexpected displacement of the vehicle when charging on a slope, to achieve safe parking of the vehicle when charging on a slope, and at the same time reduce the current and noise of electronic parking brake, and improve the life of electronic parking brake system.

[0005] This application discloses a control method for parking charging, the method comprising:

[0006] The first motor torque required to obtain the charging status and the slope of the vehicle;

[0007] The torque of the second motor is obtained based on the slope of the vehicle.

[0008] Determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system;

[0009] If the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, then the vehicle is controlled to park and charge according to the parking command.

[0010] In one exemplary embodiment of this application, a charging request signal is obtained;

[0011] The electronic parking brake system is activated based on the charging request signal, the motor torque signal of the charging status, or the power signal.

[0012] After the electronic parking brake system is activated, the current required to keep the vehicle parked is calculated based on the first motor torque required for the charging state and the second motor torque corresponding to the slope of the vehicle.

[0013] In one exemplary embodiment of this application, after the step of waking up the electronic parking brake system based on the charging request signal, the motor torque signal of the charging state, or the power signal, the method further includes:

[0014] The electronic parking brake system is controlled to detect whether a fault exists.

[0015] If so, return to the steps for activating the electronic parking brake system.

[0016] In one exemplary embodiment of this application, the step of controlling the vehicle to park and charge according to a parking command when the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system specifically includes:

[0017] If the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, a parking command is sent according to the current magnitude to control the vehicle to park and charge.

[0018] In one exemplary embodiment of this application, after the step of determining if the sum of the torques of the first motor and the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, the method further includes:

[0019] Determine whether the vehicle is stationary;

[0020] If so, a first parking command is sent according to the current magnitude to control the vehicle to park and charge;

[0021] If not, a second parking command is sent to control the vehicle to park at the maximum braking torque and charge.

[0022] In one exemplary embodiment of this application, after the step of determining whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system, the method further includes:

[0023] If the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system, the vehicle charging will be prohibited and a warning instruction will be issued.

[0024] In one exemplary embodiment of this application, the method further includes:

[0025] Compare the slope where the vehicle is located with the preset slope;

[0026] If the slope in which the vehicle is located is greater than the preset slope, charging of the vehicle will be prohibited and a prompt instruction will be issued.

[0027] In one exemplary embodiment of this application, after the step of sending a parking command to control the vehicle to park and charge when the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, the method further includes:

[0028] If a vehicle displacement signal is detected, the electronic parking brake system is controlled to park the vehicle according to the maximum current.

[0029] Another aspect of this application discloses a control device for parking charging, the device comprising:

[0030] The first acquisition module is used to acquire the first motor torque required for the charging status and the slope of the vehicle.

[0031] The second acquisition module is used to acquire the corresponding second motor torque based on the slope of the vehicle.

[0032] The torque determination module is used to determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system.

[0033] The instruction execution module is used to control the vehicle to park and charge according to the parking instruction if the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system.

[0034] In another aspect, this application also discloses a computer-readable storage medium storing at least one executable instruction that, when executed on a parking charging control device, causes the parking charging control device to perform the operation of the parking charging control method as described above.

[0035] In this embodiment, the parking charging control method obtains the torque of the first motor and the torque of the second motor corresponding to the slope of the vehicle's charging status, compares them with the maximum braking torque of the electronic parking brake system, and determines whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system. When the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, the vehicle is controlled to park and charge according to the parking command received by the vehicle; otherwise, vehicle charging is prohibited. This avoids unexpected displacement of the vehicle when charging on a slope, achieving safe parking of the vehicle when charging on a slope, while also preventing the electronic parking brake system from continuously parking with maximum braking force, reducing the current and noise of the electronic parking brake, and improving the lifespan of the electronic parking brake system.

[0036] The above description is merely an overview of the technical solutions of the embodiments of the present invention. In order to better understand the technical means of the embodiments of the present invention and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0037] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. The drawings herein are for illustrating the inventive concept of this application and are not entirely equivalent to the structure of the actual product protected by this application.

[0038] Figure 1 A flowchart illustrating an embodiment of the parking charging control method of this application is shown;

[0039] Figure 2 A flowchart illustrating another embodiment of the parking charging control method of this application is shown;

[0040] Figure 3 It shows Figure 1 A flowchart illustrating an embodiment of step S400;

[0041] Figure 4 A schematic diagram of an embodiment of the parking charging control device provided by the present invention is shown;

[0042] Figure 5 A schematic diagram of an embodiment of the vehicle-mounted wireless charging device provided by the present invention is shown. Detailed Implementation

[0043] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0044] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0045] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0046] In an alternative embodiment, refer to as follows Figure 1 As shown, this embodiment provides a control method for parking charging, the method including:

[0047] Step S100: Obtain the first motor torque required for charging status and the slope of the vehicle;

[0048] In this embodiment, the first motor torque refers to the motor torque required by the vehicle in the charging state, that is, the motor torque that the motor in the vehicle's electronic parking system may generate when the vehicle is charging. Here, the first motor torque is calculated based on the stator and rotor of the motor in the electronic parking system. The slope of the vehicle is specifically detected by the yaw rate sensor built into the vehicle, and after detecting the slope, the sensor feeds it back to the vehicle controller. The vehicle controller then controls the further operation of the vehicle based on the received slope.

[0049] Step S200: Obtain the corresponding second motor torque based on the slope where the vehicle is located;

[0050] In this embodiment, after the yaw rate sensor detects the slope where the vehicle is located, the vehicle can calculate the second motor torque corresponding to the slope based on the stator and rotor of the motor in the electronic parking system.

[0051] Step S300: Determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system;

[0052] It should be noted that an electronic parking brake system integrates temporary braking during driving and long-term braking after parking, and uses electronic control to achieve parking braking. An electronic parking brake system can ensure stable parking of the vehicle on a certain slope. The maximum braking torque of an electronic parking brake system is the maximum braking force used to bring the vehicle to a stop.

[0053] Step S400: If the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, then control the vehicle to park and charge according to the parking command.

[0054] In this embodiment, if the vehicle is parked on a slope, the electronic parking brake system can use a yaw rate sensor to identify the current slope of the vehicle and, based on the slope, keep the vehicle stationary at that slope. However, if the vehicle needs to charge on this slope, unexpected displacement may occur due to the vehicle's motor torque. In this case, the electronic parking brake system needs to be controlled to park with maximum braking force, i.e., the electronic parking brake system is parked at its maximum braking torque. However, this results in high operating noise and reduced lifespan for the electronic parking brake system. To avoid unexpected displacement of the vehicle while charging on a slope, as well as the problems of high operating noise and reduced lifespan of the electronic parking brake system, this embodiment optimizes vehicle parking and charging by combining the motor torque during charging with the corresponding motor torque based on the vehicle's slope. When the total motor torque under both operating conditions is less than or equal to the maximum braking torque of the electronic parking brake system, the vehicle is controlled to park and charge according to the parking command; otherwise, charging is prohibited. Based on this embodiment, unexpected displacement of the vehicle is avoided when charging on a slope, thus achieving safe parking of the vehicle when charging on a slope. At the same time, the electronic parking brake system is prevented from continuously parking with maximum braking force, reducing the current and noise of the electronic parking brake and extending the life of the electronic parking brake system.

[0055] Furthermore, refer to, for example Figure 2 As shown, the above-mentioned parking charging control method also includes:

[0056] Step S110: Obtain a charging request signal;

[0057] In this embodiment, before acquiring a charging request signal, the vehicle first obtains a parking angle signal based on the vehicle's parking request. Based on the parking angle signal, a parking command is issued to control the vehicle to remain stationary. This parking angle signal corresponds to the angle signal corresponding to the current slope of the vehicle. It is understood that the vehicle needs to be stationary before charging; otherwise, charging should be prohibited. This embodiment detects whether the vehicle has a charging need while it is stationary, thus acquiring the charging request signal.

[0058] Step S120: The electronic parking brake system is activated based on the charging request signal, the motor torque signal of the charging state, or the power signal.

[0059] Step S130: After the electronic parking brake system is activated, the current required to keep the vehicle parked is calculated based on the first motor torque required for the charging state and the second motor torque corresponding to the slope of the vehicle.

[0060] In this embodiment, the vehicle's electronic parking brake system is in a dormant state before charging. If the electronic parking brake system is required to operate to control the vehicle and keep it stationary in accordance with the parking command, it needs to be activated first. Then, based on the parking command, the controller within the electronic parking brake system controls the vehicle to remain stationary. It should be noted that the electronic parking brake system in this embodiment can be activated via a charging request signal on the CAN bus, a motor torque signal indicating the charging status, or a power signal.

[0061] At this time, the vehicle can wake up the electronic parking brake system via a charging request signal, a motor torque signal indicating the charging status, or a power signal on the CAN bus. Based on the first motor torque required for the charging state and the second motor torque corresponding to the vehicle's current slope, the system calculates the current required to keep the vehicle parked during the current charging state. Specifically, it calculates the required braking torque for the electronic parking brake system based on the torque generated during charging, obtaining the corresponding first motor torque, and obtains the corresponding second motor torque based on the vehicle's current slope and parking angle signal. Then, based on the sum of the first and second motor torques and the motor parameters of the electronic parking brake system, it calculates the motor power required to achieve the corresponding braking torque, thus determining the current required to keep the vehicle parked during charging. Through this embodiment, the electronic parking brake system can be controlled by this current during vehicle charging to control the vehicle's parking during charging.

[0062] Furthermore, when the sum of the torque of the first motor and the torque of the second motor corresponding to the current slope of the vehicle is less than or equal to the maximum braking torque of the electronic parking brake system, the vehicle is controlled to park and charge based on the calculated current required to keep the vehicle parked while charging. At this time, while keeping the vehicle stationary, the electronic parking brake system can be controlled to park according to the actual required parking braking torque, which reduces the noise of the electronic parking brake system and enables the vehicle to charge at the current slope.

[0063] In an exemplary embodiment, if the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, it is further determined whether the vehicle is stationary. If the vehicle is stationary, a first parking command is sent to control the vehicle to park and charge based on the calculated current required to maintain parking during the charging state. Conversely, if the sum of the torque of the first motor required for charging and the torque of the second motor corresponding to the slope of the vehicle is less than or equal to the maximum braking torque of the electronic parking brake system, but the vehicle is displaced at the current slope, a second parking command is sent to control the vehicle to park and charge according to its maximum braking torque. This embodiment ensures that the vehicle remains stationary on a sloping road, preventing displacement and rollover.

[0064] It should be noted that the motor torque of the electronic parking brake system corresponding to the first parking command is less than the maximum braking torque of the electronic parking brake system corresponding to the second parking command. Here, the maximum braking torque of the electronic parking brake system is the same as the maximum torque of the motor in the electronic parking brake system.

[0065] Based on the above embodiments, during the vehicle's parking charging process, the parking status of the vehicle is continuously monitored. If a displacement signal of the vehicle is detected, it indicates that the vehicle has an unexpected displacement. At this time, the electronic parking brake system is controlled to control the vehicle to park according to the maximum current, that is, to control the vehicle to park according to the maximum braking force of the electronic parking brake system, thereby preventing the vehicle from rolling away during the charging process.

[0066] In an exemplary embodiment, in conjunction with the above step S120, after step S120 of waking up the electronic parking brake system based on the charging request signal, the motor torque signal of the charging state, or the power signal, the method further includes:

[0067] The electronic parking brake system is controlled to detect whether a fault exists.

[0068] If so, return to the steps for activating the electronic parking brake system.

[0069] In this embodiment, after activating the electronic parking brake system, the system first checks for vehicle malfunctions. If a malfunction is detected, it returns to the activating step, providing a warning about the malfunction and initiating appropriate safe parking maneuvers. If no malfunction is detected, it further determines the relationship between the sum of the first motor torque during charging and the second motor torque at the current vehicle slope, and the maximum braking torque of the electronic parking brake system. This embodiment prevents the vehicle from continuing charging or other operations when a malfunction exists.

[0070] It should be noted that the faults involved in this embodiment may be, but are not limited to, EPB motor faults, ESP APB software faults, ESP ECU faults, wheel speed faults, entering drum mode, etc., and are limited according to the actual application situation.

[0071] In one exemplary embodiment, if the sum of the torque of the first motor during charging and the torque of the second motor corresponding to the current slope of the vehicle is greater than the maximum braking torque of the electronic parking brake system, it indicates that even if the vehicle is parked with the maximum braking force of the electronic parking brake system, there will still be displacement. In this case, the vehicle is controlled to enter a charging-prohibited state, and a warning instruction is issued to remind the driver. For example, the vehicle will display a message via the vehicle's central control screen, head-up display, or a mobile terminal device linked to the vehicle, such as "The current vehicle may be at risk of rolling away; please park the vehicle in a safe area," or "The current vehicle may be at risk of rolling away; charging is prohibited." This embodiment can prevent unexpected displacement of the vehicle when charging on a slope, improving vehicle safety.

[0072] In an exemplary embodiment, the parking charging control method further includes: comparing the current slope of the vehicle with a preset slope; detecting the current slope of the vehicle using a yaw rate sensor built into the vehicle; comparing the detected slope with the preset slope to determine whether the current slope is a safe slope; and prohibiting vehicle charging when the current slope is greater than the preset slope, and issuing a prompt to remind the driver. For example, the vehicle may display a message such as "The vehicle may be at risk of rolling, please park the vehicle in a safe area" or "The vehicle may be at risk of rolling, charging is prohibited" through the vehicle's central control display, head-up display, or a mobile terminal device linked to the vehicle. This embodiment can avoid unexpected displacement of the vehicle when charging on a slope, improving vehicle safety.

[0073] Figure 4 A schematic diagram of the control device for parking charging in this application is shown. Figure 4As shown, the parking charging control device 500 is applied to a vehicle. The parking charging control device includes: a first acquisition module 510, a second acquisition module 520, a torque judgment module 530, and an instruction execution module 540.

[0074] The first acquisition module 510 is used to acquire the first motor torque required for the charging state and the slope of the vehicle.

[0075] The second acquisition module 520 is used to acquire the corresponding second motor torque according to the slope of the vehicle.

[0076] The torque determination module 530 is used to determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system.

[0077] The instruction execution module 540 is used to control the vehicle to park and charge according to the parking instruction if the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system.

[0078] In this embodiment, the parking charging control device 500 acquires the first motor torque and the vehicle's slope as described in the vehicle's charging status via the first acquisition module 510, and acquires the second motor torque corresponding to the vehicle's slope via the second acquisition module 520. Then, the torque judgment module 530 compares the sum of the first and second motor torques with the maximum braking torque of the electronic parking brake system to determine whether the sum of the first and second motor torques is greater than the maximum braking torque of the electronic parking brake system. If the sum of the first and second motor torques is less than or equal to the maximum braking torque of the electronic parking brake system, the command execution module 540 controls the vehicle to park and charge according to the parking command received by the vehicle; otherwise, charging is prohibited. This avoids unexpected displacement of the vehicle when charging on a slope, achieving safe parking of the vehicle when charging on a slope, while reducing the current and noise of the electronic parking brake and extending the lifespan of the electronic parking brake system.

[0079] Figure 5 The diagram shows a structural schematic of the vehicle of the present invention. The specific embodiments of the present invention do not limit the specific implementation of the vehicle.

[0080] like Figure 5 As shown, the vehicle may include: a processor 602, a communications interface 604, a memory 606, and a communications bus 608.

[0081] The processor 602, communication interface 604, and memory 606 communicate with each other via communication bus 608. Communication interface 604 is used to communicate with other network elements such as clients or other servers. The processor 602 executes program 610, specifically performing the relevant steps in the above-described embodiment of the control method for parking charging.

[0082] Specifically, program 610 may include program code, which includes computer-executable instructions.

[0083] Processor 602 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention. The vehicle may include one or more processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0084] Memory 606 is used to store program 610. Memory 606 may have high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0085] Specifically, program 610 can be called by processor 602 to cause the car to perform the following operations:

[0086] The first motor torque required to obtain the charging status and the slope of the vehicle;

[0087] The torque of the second motor is obtained based on the slope of the vehicle.

[0088] Determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system;

[0089] If the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, then the vehicle is controlled to park and charge according to the parking command.

[0090] In this embodiment, program 610 is a program for a parking charging control method. Processor 602 calls the control method to make the car perform parking charging. Specifically, it obtains the torque of the first motor and the torque of the second motor corresponding to the slope of the vehicle's charging status, and compares them with the maximum braking torque of the electronic parking brake system. It determines whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system. When the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, it controls the vehicle to park and charge according to the parking command received by the vehicle; otherwise, it prohibits the vehicle from charging. This avoids unexpected displacement of the vehicle when charging on a slope, realizes safe parking of the vehicle when charging on a slope, and at the same time reduces the current and noise of the electronic parking brake, and improves the life of the electronic parking brake system.

[0091] This invention provides a computer-readable storage medium storing at least one executable instruction that, when executed on a parking charging control device or a vehicle, causes the parking charging control device or vehicle to perform the parking charging control method in any of the above-described method embodiments.

[0092] The executable instructions stored in the computer-readable storage medium provided in this embodiment of the invention can obtain the torque of the first motor and the torque of the second motor corresponding to the slope of the vehicle's charging state, compare them with the maximum braking torque of the electronic parking brake system, and determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system. When the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, the vehicle is controlled to park and charge according to the parking command received by the vehicle; otherwise, charging is prohibited. This avoids unexpected displacement of the vehicle when charging on a slope, achieves safe parking of the vehicle when charging on a slope, reduces the current and noise of the electronic parking brake, and improves the lifespan of the electronic parking brake system.

[0093] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system, or other device. Furthermore, the embodiments of this invention are not directed to any particular programming language.

[0094] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. Similarly, for the sake of brevity and to aid in understanding one or more aspects of the invention, in the description of exemplary embodiments of the invention above, various features of the embodiments are sometimes grouped together in a single embodiment, figure, or description thereof. The claims, which follow the detailed description, are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0095] Those skilled in the art will understand that the modules in the device of the embodiment can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiment can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components, except that at least some of such features and / or processes or units are mutually exclusive.

[0096] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A control method for parking charging, characterized in that, The method includes: The first motor torque required to obtain the charging status and the slope of the vehicle; the first motor torque is the motor torque generated by the motor in the vehicle's electronic parking brake system when the vehicle is charging. The torque of the second motor is obtained based on the slope of the vehicle. Determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system; If the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, then the vehicle is controlled to park and charge according to the parking command. The method further includes: Obtain a charging request signal; The electronic parking brake system is activated based on the charging request signal, the motor torque signal of the charging status, or the power signal. After the electronic parking brake system is activated, the current required to keep the vehicle parked is calculated based on the first motor torque required for the charging state and the second motor torque corresponding to the slope of the vehicle. After the step of determining that the sum of the torques of the first motor and the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, the method further includes: Determine whether the vehicle is stationary; If so, a first parking command is sent according to the current magnitude to control the vehicle to park and charge; If not, a second parking command is sent to control the vehicle to park at the maximum braking torque and charge.

2. The control method for parking charging according to claim 1, characterized in that, After the step of waking up the electronic parking brake system based on the charging request signal, the motor torque signal of the charging status, or the power signal, the method further includes: The electronic parking brake system is controlled to detect whether a fault exists. If so, return to the steps for activating the electronic parking brake system.

3. The control method for parking charging according to claim 1, characterized in that, The step of controlling the vehicle to park and charge according to the parking command when the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system is as follows: If the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, a parking command is sent according to the current magnitude to control the vehicle to park and charge.

4. The control method for parking charging according to claim 1, characterized in that, After the step of determining whether the sum of the torques of the first motor and the second motor is greater than the maximum braking torque of the electronic parking brake system, the method further includes: If the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system, the vehicle charging will be prohibited and a warning instruction will be issued.

5. The control method for parking charging according to claim 1, characterized in that, The method further includes: Compare the slope where the vehicle is located with the preset slope; If the slope in which the vehicle is located is greater than the preset slope, charging of the vehicle will be prohibited and a prompt instruction will be issued.

6. The control method for parking charging according to any one of claims 2-5, characterized in that, Following the step of sending a parking command to control the vehicle to park and charge when the sum of the torques of the first motor and the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, the method further includes: If a vehicle displacement signal is detected, the electronic parking brake system is controlled to park the vehicle according to the maximum current.

7. A control device for parking charging, characterized in that the device comprises: The first acquisition module is used to acquire the first motor torque required for the charging status and the slope of the vehicle. The first motor torque is the motor torque generated by the motor in the vehicle's electronic parking brake system when the vehicle is charging. The second acquisition module is used to acquire the corresponding second motor torque based on the slope of the vehicle. The torque determination module is used to determine whether the sum of the torque of the first motor and the torque of the second motor is greater than the maximum braking torque of the electronic parking brake system. The instruction execution module is used to control the vehicle to park and charge according to the parking instruction if the sum of the torque of the first motor and the torque of the second motor is less than or equal to the maximum braking torque of the electronic parking brake system. The device further includes: Obtain a charging request signal; The electronic parking brake system is activated based on the charging request signal, the motor torque signal of the charging status, or the power signal. After the electronic parking brake system is activated, the current required to keep the vehicle parked is calculated based on the first motor torque required for the charging state and the second motor torque corresponding to the slope of the vehicle. After the step of determining that the sum of the torques of the first motor and the second motor is less than or equal to the maximum braking torque of the electronic parking brake system, the method further includes: Determine whether the vehicle is stationary; If so, a first parking command is sent according to the current magnitude to control the vehicle to park and charge; If not, a second parking command is sent to control the vehicle to park at the maximum braking torque and charge.

8. A computer-readable storage medium, characterized in that, The storage medium stores at least one executable instruction, which, when executed on the parking charging control device, causes the parking charging control device to perform the operation of the parking charging control method as described in any one of claims 1-6.

Images