A method, device and medium for brake protection of an electric tailgate

Abstract

The application discloses a brake protection method and device for an electric tail door and a medium, and is suitable for the technical field of automobile tail doors. The corresponding target trigger strategy is determined according to the effectiveness of the electric function, the target trigger strategy is determined based on the assembly stage of the current electric tail door, and the trigger strategies corresponding to different assembly stages are different. Different target strategies are adopted for different working conditions, the pertinence of the trigger mechanism is considered, the same trigger mechanism caused by only manual speed judgment in the prior art is avoided, and the manual speed under the brake trigger mechanism of different working conditions is not truly considered. Therefore, the target strategies corresponding to different working conditions of the application are different, the demand of different working conditions is met, and the motor brake protection experience of the electric tail door is improved. In the corresponding working condition at the factory end, the corresponding trigger strategy is adopted to avoid damage to the electric elements of the support rod motor and the controller, and in the corresponding working condition at the user end, the corresponding trigger strategy is adopted to avoid the problem of invalid electric function.

Description

Technical Field

[0001] This invention relates to the field of automobile tailgate technology, and in particular to a braking protection method, device and medium for an electric tailgate. Background Technology

[0002] Traditional tailgates require manual operation to open and close, and sometimes, due to distraction or insufficient strength, it's impossible to fully control the tailgate's movement. However, electric tailgates, through intelligent sensors and an electric drive system, can precisely control the tailgate's trajectory and speed, thus preventing accidental injuries.

[0003] When a user manually opens or closes the power tailgate, excessively fast manual speeds can generate excessive back electromotive force (EMF), potentially damaging the strut motor and the electrical components of the controller. Simultaneously, the high manual speed causes numerous fluctuations in the Hall effect signals collected by the power tailgate controller, leading to an overload and triggering the protection mechanism for automatic power-off and restart. However, when the power is off while the power tailgate is open, the collected Hall effect signals are unreliable, being considered invalid during the power outage and failing to reflect the actual mechanical position of the power tailgate, thus causing the electric function to malfunction. Both of these scenarios involve manual speed triggering the brake protection. However, in the first scenario (at the factory), different vehicle models have varying strut motor generating capacities. At the same manual speed, one model may generate a back EMF sufficient to damage components, while another model may not, resulting in an imbalance in triggering across all models. In the second scenario (user side), under certain circumstances, the user needs to manually move the electric tailgate. However, unlike the first scenario, the user's manual speed is much lower than the manual speed at which the factory triggers the brake protection. If the same manual speed is used to trigger the same threshold condition, the experience of the motor brake protection strategy will be reduced.

[0004] Therefore, how to improve the protection mechanism of the electric tailgate's motor brake to cope with various working conditions is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a braking protection method, device, and medium for electric tailgates, in order to solve the technical problem that existing protection strategies for motor braking suffer from reduced user experience due to triggering the same threshold value at the same manual speed.

[0006] To solve the above-mentioned technical problems, the present invention provides a brake protection method for an electric tailgate, comprising:

[0007] Obtain the validity of the current electric tailgate's electric function;

[0008] The target triggering strategy for the current electric tailgate is determined based on the effectiveness of the electric function, wherein the target triggering strategy is determined based on the assembly stage of the current electric tailgate, and the triggering strategy is different for each assembly stage.

[0009] The braking mechanism is triggered on the current electric tailgate according to the corresponding target triggering strategy to achieve braking protection.

[0010] Preferably, the target triggering strategy includes at least a factory-side triggering strategy and a user-side triggering strategy.

[0011] Preferably, determining the target triggering strategy for the current electric tailgate based on the effectiveness of the electric function includes:

[0012] Obtain the flag information of the electric function to which the current electric tailgate belongs;

[0013] When the flag information is invalid, the electric function is determined to be invalid, and the target triggering strategy is determined to be the factory-side triggering strategy based on the invalid electric function.

[0014] When the flag information is valid, the electric function is determined to be valid, and the target triggering strategy is determined to be the user-end triggering strategy based on the validity of the electric function.

[0015] Preferably, the process of determining the factory-side triggering strategy includes:

[0016] Obtain the current motor voltage of the electric tailgate;

[0017] Determine whether the motor voltage meets a first preset condition, wherein the first preset condition is that the motor voltage exceeds a first threshold.

[0018] If the first preset condition is met, then obtain the trigger time when the first preset condition is met;

[0019] Determine whether the pending trigger time meets a second preset condition, wherein the second preset condition is that the pending trigger time is greater than a first preset time;

[0020] If the pending trigger time meets the second preset condition, then the braking mechanism is triggered to establish the factory-side triggering strategy.

[0021] Preferably, the process of determining the user-side triggering strategy includes:

[0022] Obtain the current motor speed value of the electric tailgate;

[0023] Determine whether the motor speed value meets a third preset condition, wherein the third preset condition is that the motor speed value exceeds a second threshold.

[0024] If the third preset condition is met, the braking mechanism is triggered to establish the user-side triggering strategy.

[0025] Preferably, the first threshold is determined based on a preset range corresponding to the withstand voltage value of the motor, and the first preset time is based on the duration of the preset range corresponding to the first threshold.

[0026] Preferably, the second threshold is determined based on the number of poles of the strut motor and the number of tasks to be processed.

[0027] To solve the above-mentioned technical problems, the present invention also provides a brake protection device for an electric tailgate, comprising:

[0028] The acquisition module is used to obtain the validity of the electric function of the current electric tailgate;

[0029] The determining module is used to determine the target triggering strategy of the current electric tailgate based on the effectiveness of the electric function, wherein the target triggering strategy is determined based on the assembly stage of the current electric tailgate, and the triggering strategy is different for each assembly stage.

[0030] The triggering module is used to trigger the braking mechanism of the current electric tailgate according to the corresponding target triggering strategy to achieve braking protection.

[0031] To solve the above-mentioned technical problems, the present invention also provides a brake protection device for an electric tailgate, comprising:

[0032] Memory, used to store computer programs;

[0033] A processor is configured to execute the computer program to implement the steps of the electric tailgate brake protection method as described above.

[0034] To address the aforementioned technical problems, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the above-described electric tailgate brake protection method.

[0035] This invention provides a braking protection method for an electric tailgate, comprising: obtaining the validity of the electric function of the current electric tailgate; determining a target triggering strategy for the current electric tailgate based on the validity of the electric function, wherein the target triggering strategy is determined based on the assembly stage of the current electric tailgate, and the triggering strategy is different for each assembly stage; and triggering the braking mechanism of the current electric tailgate according to the corresponding target triggering strategy to achieve braking protection. The method determines the corresponding target triggering strategy based on the validity of the electric function, and triggers different target strategies for different operating conditions (e.g., factory end and user end). Considering the specificity of the triggering mechanism, this invention avoids the problem of identical triggering mechanisms caused by judging solely by manual speed in existing technologies, which do not truly consider the different manual speeds under braking mechanisms at the factory end and user end. Therefore, the target strategies for different operating conditions in this invention are different to meet the needs of different operating conditions and improve the user experience of electric tailgate motor braking protection. In the factory end operating conditions, a corresponding triggering strategy is used to avoid damage to the electrical components of the strut motor and controller; in the user end operating conditions, a corresponding triggering strategy is used to avoid the problem of electric function failure.

[0036] In addition, the present invention also provides a brake protection device and medium for an electric tailgate, which has the same beneficial effects as the above-described brake protection method for an electric tailgate. Attached Figure Description

[0037] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A flowchart illustrating a braking protection method for an electric tailgate, provided as an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of a motor braking protection strategy provided in an embodiment of the present invention;

[0040] Figure 3 A structural diagram of a brake protection device for an electric tailgate provided in an embodiment of the present invention;

[0041] Figure 4 A structural diagram of another electric tailgate brake protection device provided in an embodiment of the present invention. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present invention.

[0043] The core of this invention is to provide a braking protection method, device, and medium for electric tailgates, in order to solve the technical problem that existing protection strategies for motor braking suffer from reduced user experience due to triggering the same threshold value at the same manual speed.

[0044] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] It's important to note that at the factory level, during vehicle assembly, the electric functions are disabled due to the lack of self-learning initialization (the controller detects and stores the highest mechanical opening position of the tailgate through a self-learning initialization process), requiring manual opening and closing of the tailgate. In this situation, triggering the brakes would impact assembly efficiency and necessitate intervention if workers operate the vehicle too roughly. Using speed as the trigger condition is inappropriate in this context, as different vehicle models have different strut motor power generation capabilities. At the same speed, one model might generate a back electromotive force sufficient to damage components, while another model might not.

[0046] On the user side, initialization is complete, and the electric function is not disabled. Under certain operating conditions, the user may need to manually move the tailgate. If the speed is too high, this could lead to processor overload, as mentioned above. It's worth noting that the speed at which the user side generates a back electromotive force sufficient to damage components is generally much greater than the speed at which it triggers processor overload, and it requires a period of accumulation. Therefore, in this case, damage from the back electromotive force does not need to be considered.

[0047] The brake protection method for electric tailgate provided by this invention can solve the defects in the above two working conditions. Figure 1 A flowchart of a braking protection method for an electric tailgate provided in an embodiment of the present invention is shown below. Figure 1 As shown, the method includes:

[0048] S11: Obtain the validity of the current electric tailgate's electric function;

[0049] S12: Determine the target triggering strategy for the current electric tailgate based on the effectiveness of the electric function;

[0050] The target triggering strategy is determined based on the current assembly stage of the electric tailgate, and the triggering strategy is different for each assembly stage.

[0051] S13: Trigger the braking mechanism for the current electric tailgate according to the corresponding target triggering strategy to achieve braking protection.

[0052] Specifically, this embodiment is based on a motor brake protection scheme in manual mode for the electric tailgate. It obtains the validity of the current electric tailgate's electric function. Validity is determined by the controller detecting and storing the highest mechanical opening position of the electric tailgate based on a self-learning initialization process. Validity is determined by whether self-learning has been performed, so that different braking trigger conditions and braking execution strategies can be adopted subsequently to meet the needs of different operating conditions.

[0053] The target triggering strategy for the current electric tailgate is determined based on the effectiveness of the electric function. It should be noted that the target triggering strategy is based on the current assembly stage of the electric tailgate, such as the target triggering strategy at the production assembly plant, the user end, or the after-sales maintenance end. It can also be based on different electric tailgate models, with different thresholds or triggering conditions set for different manual speeds, etc. There are no restrictions here, but the triggering strategies for different stages are different.

[0054] The validity of an electric function can be determined by a specific flag indicating the electric function, or by triggering a certain condition to determine the validity of the electric function. There is no limitation here, and it can be set according to the actual situation.

[0055] As one example, the target triggering strategy includes at least a factory-side triggering strategy and a user-side triggering strategy.

[0056] Specifically, for different assembly and usage stages, and for different groups at the factory and user ends, the triggering strategies are factory-side triggering strategies and user-side triggering strategies. Of course, there are other triggering strategies as well; this is just one example for illustration.

[0057] Based on the above embodiments, the target triggering strategy for the current electric tailgate is determined according to the effectiveness of the electric function, including:

[0058] Obtain the indicator information of the electric function to which the current electric tailgate belongs;

[0059] When the flag information is invalid, the electric function is determined to be invalid, and the target triggering strategy is determined to be the factory-side triggering strategy based on the invalid electric function.

[0060] When the flag information is valid, the electric function is determined to be valid, and the target triggering strategy is determined to be the user-end triggering strategy based on the validity of the electric function.

[0061] It should be noted that the current electric tailgate's electric function flag information can be represented by 0 or 1. For example, a flag information of 1 indicates that it is valid, meaning that the electric tailgate has been successfully assembled and is in use by the user; a flag information of 0 indicates that it is invalid, meaning that the electric tailgate is still in the assembly stage and is being tested at the factory.

[0062] This embodiment only uses flag information to determine whether the electric function is effective in order to determine the subsequent target triggering strategy.

[0063] Based on the above embodiments, the braking mechanism of the current electric tailgate is triggered according to the corresponding target triggering strategy to achieve braking protection. The effectiveness of the electric function can determine the current working condition of the electric tailgate, so as to determine the corresponding triggering strategy for triggering.

[0064] This invention provides a braking protection method for an electric tailgate, comprising: obtaining the validity of the electric function of the current electric tailgate; determining a target triggering strategy for the current electric tailgate based on the validity of the electric function, wherein the target triggering strategy is determined based on the assembly stage of the current electric tailgate, and the triggering strategy is different for each assembly stage; and triggering a braking mechanism for the current electric tailgate according to the corresponding target triggering strategy to achieve braking protection. The method determines the corresponding target triggering strategy based on the validity of the electric function, and triggers different target strategies for different operating conditions (e.g., factory end and user end). Considering the specificity of the triggering mechanism, this invention avoids the problem of identical triggering mechanisms caused by judging solely by manual speed in existing technologies, which do not truly consider the different manual speeds under braking mechanisms at the factory end and user end. Therefore, the target strategies for different operating conditions in this invention are different to meet the needs of different operating conditions and improve the user experience of electric tailgate motor braking protection. In the factory end operating conditions, a corresponding triggering strategy is used to avoid damage to the electrical components of the strut motor and controller; in the user end operating conditions, a corresponding triggering strategy is used to avoid the problem of electric function failure.

[0065] Based on the above embodiments, the process of determining the factory-side triggering strategy includes:

[0066] Get the current motor voltage of the electric tailgate;

[0067] Determine whether the motor voltage meets a first preset condition, wherein the first preset condition is that the motor voltage exceeds a first threshold.

[0068] If the first preset condition is met, then obtain the trigger time when the first preset condition is met;

[0069] Determine whether the time to be triggered meets the second preset condition, wherein the second preset condition is that the time to be triggered is greater than the first preset time;

[0070] If the waiting time meets the second preset condition, the braking mechanism is triggered to establish the factory-side triggering strategy.

[0071] Specifically, using speed as the trigger condition at the factory level is inappropriate, as different vehicle models have different power generation capabilities for their strut motors. At the same speed, one vehicle model might generate a back electromotive force sufficient to damage components, while another might not. Furthermore, the speed at which a back electromotive force damaging components is generated is generally much greater than the speed at which the processor is overloaded. Therefore, triggering is done through motor voltage. The back electromotive force voltage, tailored to the characteristics of different strut motors, offers better protection and a better user experience at the factory level.

[0072] Figure 2 This is a schematic diagram of a motor braking protection strategy provided in an embodiment of the present invention, as shown below. Figure 2 As shown, voltage monitoring is performed to prevent damage from back electromotive force, and speed monitoring is performed to prevent excessive speed and processor overload.

[0073] When the motor voltage meets the first preset condition, the waiting time at the first preset condition is obtained, and it is determined whether the waiting time meets the second preset condition. If it does, the braking mechanism is triggered.

[0074] The establishment of the first preset condition is that the motor voltage exceeds a first threshold. Regarding the determination of the first threshold and the establishment of the second preset condition, as an example, the first threshold is determined based on a preset range corresponding to the withstand voltage value of the motor, and the first preset time is based on the time during which the preset range corresponding to the first threshold is maintained.

[0075] Understandably, the first preset condition is that the motor voltage exceeds the first threshold. This first threshold is based on a preset range that the motor can withstand. For example, if the controller components can withstand a voltage of 25V, then the first threshold can be set to 80% of the withstand voltage, i.e., 25V * 80% = 20V. There are three technical solutions: one is to simply exceed the first threshold (20V); the second is to record the number of times the first threshold is exceeded, and if the number of times exceeds a certain number, then it is finally determined that the first threshold has been exceeded; the last is to determine that the first threshold has been exceeded if the motor voltage is always within the allowable fluctuation range above and below the first threshold.

[0076] If the first preset condition is met, the trigger time when the first preset condition is met is obtained. It should be noted that a timing mechanism is used here. Timing starts as soon as the first threshold is exceeded. The first preset time is to prevent large deviations during sampling or to minimize the glitches in the corresponding sampling data. The braking mechanism is triggered after the data has stabilized for a certain period of time. If the trigger time does not meet the second preset condition, the braking mechanism is not triggered.

[0077] It should be noted that after the braking mechanism is triggered, a certain period of time is maintained until the motor depressurizes. This maintenance period is determined based on a functional relationship established between the motor frequency, descent time, and the target depressurization value, and is not limited here. Therefore, the brake trigger time and brake holding time are determined according to the characteristics of the motor.

[0078] When the tailgate is not initialized (monitored by software parameters), the voltage across the motor is monitored. If the voltage exceeds the set threshold (20V) for a period of time (20ms), the low side of the H-bridge is activated, triggering the brake and holding it until the motor depressurizes (200ms). If the controller components can withstand a voltage of 25V when the tailgate is not initialized, the threshold can be set to 25 x 0.8 = 20V (20% margin). The brake trigger time and brake holding time can also be determined based on the motor characteristics.

[0079] The factory-side triggering strategy determination process provided in this embodiment of the invention enables the use of a factory-side triggering strategy under the corresponding working conditions at the factory to avoid damage to the electrical components of the strut motor and controller.

[0080] Based on the above embodiments, the process of determining the user-side triggering strategy includes:

[0081] Get the current motor speed value of the electric tailgate;

[0082] Determine whether the motor speed value meets the third preset condition, wherein the third preset condition is that the motor speed value exceeds the second threshold.

[0083] If the third preset condition is met, the braking mechanism is triggered to establish the user-side triggering strategy.

[0084] It should be noted that the user-end triggering strategy is based on the finished vehicle. For manually operated tailgates, the mechanical opening range of the electric tailgate is normally set to 0%-100%. However, since the 100% opening range will touch the top, the actual opening range of the electric tailgate may be 0%-50%, leaving 50%-100% in manual opening. The manual mode of the electric tailgate in this embodiment is to be opened within this range.

[0085] Correspondingly, the motor speed is relatively high, and the corresponding back electromotive force difference is small. Therefore, when the motor speed meets the third preset condition, i.e., exceeds the second threshold, the braking mechanism is triggered. Here, the second threshold is determined based on the number of pole pairs of the strut. As one embodiment, the second threshold is determined based on the number of pole pairs of the strut motor and the number of tasks to be processed.

[0086] For example, 10 Hall signals correspond to 10 transitions, and their corresponding speed thresholds are relatively low. The actual calibration is based on the specific parameters given by the vehicle manufacturer.

[0087] In addition, the reason for holding the brake mechanism in place for a certain period of time is to remind the user that this operation may damage the device and to stop the user from operating it.

[0088] After the tailgate initialization is complete (software parameter monitoring), monitor the manual movement speed of the strut. When the motor speed exceeds the set threshold (68mm / s), immediately activate the low side of the H-bridge to trigger the brake and hold it for 250ms. After tailgate initialization, select a reasonable speed threshold based on the processor's processing power and the number of poles on the strut. It is recommended to perform experimental calibration on a real vehicle. The relatively long brake holding time is chosen to remind the user that this operation may damage the components and to prevent the user from operating the brake.

[0089] The process for determining the user-end triggering strategy provided in this embodiment of the invention enables the use of the user-end triggering strategy under the corresponding operating conditions at the user end to avoid the problem of electric function failure.

[0090] The foregoing has described in detail various embodiments of the brake protection method for electric tailgates. Based on this, the present invention also discloses a brake protection device for electric tailgates corresponding to the aforementioned method. Figure 3 This is a structural diagram of a brake protection device for an electric tailgate provided in an embodiment of the present invention. Figure 3 As shown, the brake protection device for the electric tailgate includes:

[0091] The acquisition module 11 is used to acquire the validity of the electric function of the current electric tailgate;

[0092] The determination module 12 is used to determine the target triggering strategy of the current electric tailgate based on the effectiveness of the electric function. The target triggering strategy is determined based on the current assembly stage of the electric tailgate, and the triggering strategy is different for each assembly stage.

[0093] Trigger module 13 is used to trigger the braking mechanism of the current electric tailgate according to the corresponding target triggering strategy to achieve braking protection.

[0094] Since the embodiments of the device part correspond to the embodiments described above, please refer to the embodiments described in the method part for the embodiments of the device part, and will not be repeated here.

[0095] This invention provides a brake protection device for an electric tailgate, comprising: acquiring the validity of the electric function of the current electric tailgate; determining a target triggering strategy for the current electric tailgate based on the validity of the electric function, wherein the target triggering strategy includes at least a factory-side triggering strategy and a user-side triggering strategy, and the factory-side triggering strategy and the user-side triggering strategy are different; and triggering a braking mechanism on the current electric tailgate according to the corresponding target triggering strategy to achieve brake protection. The target triggering strategy is determined based on the validity of the electric function, and different target strategies are triggered for different operating conditions (factory-side and user-side). Considering the specificity of the triggering mechanism, this invention avoids the situation where the triggering mechanism is the same due to the judgment only based on manual speed in the prior art, without truly considering the difference in manual speed under the factory-side and user-side braking mechanisms. Therefore, the target strategy for different operating conditions is different in this invention to meet the needs of different operating conditions and improve the user experience of electric tailgate motor brake protection. In the factory-side operating conditions, a factory-side triggering strategy is used to avoid damage to the electrical components of the strut motor and controller; in the user-side operating conditions, a user-side triggering strategy is used to avoid the problem of electric function failure.

[0096] Figure 4 A structural diagram of another electric tailgate brake protection device provided in an embodiment of the present invention is shown below. Figure 4 As shown, the device includes:

[0097] Memory 21 is used to store computer programs;

[0098] Processor 22 is used to implement the steps of a brake protection method for an electric tailgate when executing a computer program.

[0099] The processor 22 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 22 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 22 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 22 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 22 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0100] The memory 21 may include one or more computer-readable storage media, which may be non-transitory. The memory 21 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 21 is used to store at least the following computer program 211, which, after being loaded and executed by the processor 22, is capable of implementing the relevant steps of the electric tailgate braking protection method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 21 may also include an operating system 212 and data 213, etc., and the storage method may be temporary storage or permanent storage. The operating system 212 may include Windows, Unix, Linux, etc. The data 213 may include, but is not limited to, the data involved in the electric tailgate braking protection method, etc.

[0101] In some embodiments, the brake protection device for the electric tailgate may further include a display screen 23, an input / output interface 24, a communication interface 25, a power supply 26, and a communication bus 27.

[0102] Those skilled in the field can understand, Figure 4 The structure shown does not constitute a limitation on the brake protection device for the power tailgate and may include more or fewer components than shown.

[0103] The processor 22 implements the electric tailgate braking protection method provided in any of the above embodiments by calling the instructions stored in the memory 21.

[0104] This invention provides a brake protection device for an electric tailgate, comprising: acquiring the validity of the electric function of the current electric tailgate; determining a target triggering strategy for the current electric tailgate based on the validity of the electric function, wherein the target triggering strategy includes at least a factory-side triggering strategy and a user-side triggering strategy, and the factory-side triggering strategy and the user-side triggering strategy are different; and triggering a braking mechanism on the current electric tailgate according to the corresponding target triggering strategy to achieve brake protection. The target triggering strategy is determined based on the validity of the electric function, and different target strategies are triggered for different operating conditions (factory-side and user-side). Considering the specificity of the triggering mechanism, this invention avoids the situation where the triggering mechanism is the same due to the judgment only based on manual speed in the prior art, without truly considering the difference in manual speed under the factory-side and user-side braking mechanisms. Therefore, the target strategy for different operating conditions is different in this invention to meet the needs of different operating conditions and improve the user experience of electric tailgate motor brake protection. In the factory-side operating conditions, a factory-side triggering strategy is used to avoid damage to the electrical components of the strut motor and controller; in the user-side operating conditions, a user-side triggering strategy is used to avoid the problem of electric function failure.

[0105] Furthermore, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by processor 22, implements the steps of the above-described electric tailgate brake protection method.

[0106] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0107] For an introduction to the computer-readable storage medium provided by the present invention, please refer to the above method embodiments. The present invention will not be described in detail here, but it has the same beneficial effects as the above-described electric tailgate brake protection method.

[0108] The above provides a detailed description of the braking protection method, device, and medium for an electric tailgate provided by the present invention. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0109] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A brake protection method for an electric tailgate, characterized in that, include: Obtain the validity of the current electric tailgate's electric function; The target triggering strategy for the current electric tailgate is determined based on the effectiveness of the electric function, wherein the target triggering strategy is determined based on the assembly stage of the current electric tailgate, and the triggering strategy is different for each assembly stage; the target triggering strategy includes at least a factory-side triggering strategy and a user-side triggering strategy. According to the corresponding target triggering strategy, the braking mechanism of the current electric tailgate is triggered to achieve braking protection; Correspondingly, the process of determining the factory-side triggering strategy includes: Obtain the current motor voltage of the electric tailgate; Determine whether the motor voltage meets a first preset condition, wherein the first preset condition is that the motor voltage exceeds a first threshold. If the first preset condition is met, then obtain the trigger time when the first preset condition is met; Determine whether the pending trigger time meets the second preset condition, wherein the second preset condition is that the pending trigger time is greater than the first preset time; the first preset time is to prevent large deviations during sampling, or reduce the corresponding sampling data spikes, and to trigger the braking mechanism after the data has stabilized for a certain period of time; if the pending trigger time does not meet the second preset condition, the braking mechanism is not triggered. If the time to be triggered meets the second preset condition, then the braking mechanism is triggered to establish the factory-side triggering strategy; Correspondingly, the process of determining the user-side triggering strategy includes: Obtain the current motor speed value of the electric tailgate; Determine whether the motor speed value meets a third preset condition, wherein the third preset condition is that the motor speed value exceeds a second threshold. If the third preset condition is met, the braking mechanism is triggered to establish the user-side triggering strategy.

2. The brake protection method for an electric tailgate according to claim 1, characterized in that, The step of determining the target triggering strategy for the current electric tailgate based on the effectiveness of the electric function includes: Obtain the flag information of the electric function to which the current electric tailgate belongs; When the flag information is invalid, the electric function is determined to be invalid, and the target triggering strategy is determined to be the factory-side triggering strategy based on the invalid electric function. When the flag information is valid, the electric function is determined to be valid, and the target triggering strategy is determined to be the user-end triggering strategy based on the validity of the electric function.

3. The brake protection method for an electric tailgate according to claim 1, characterized in that, The first threshold is determined based on a preset range corresponding to the withstand voltage value of the motor, and the first preset time is based on the duration of the preset range corresponding to the first threshold.

4. The brake protection method for an electric tailgate according to claim 1, characterized in that, The second threshold is determined based on the number of poles of the strut motor and the number of tasks to be processed.

5. A brake protection device for an electric tailgate, characterized in that, include: The acquisition module is used to obtain the validity of the electric function of the current electric tailgate; The determining module is used to determine the target triggering strategy of the current electric tailgate based on the effectiveness of the electric function, wherein the target triggering strategy is determined based on the assembly stage of the current electric tailgate, and the triggering strategy is different for each assembly stage; the target triggering strategy includes at least a factory-side triggering strategy and a user-side triggering strategy; The triggering module is used to trigger the braking mechanism of the current electric tailgate according to the corresponding target triggering strategy to achieve braking protection; Correspondingly, the process of determining the factory-side triggering strategy includes: Obtain the current motor voltage of the electric tailgate; Determine whether the motor voltage meets a first preset condition, wherein the first preset condition is that the motor voltage exceeds a first threshold. If the first preset condition is met, then obtain the trigger time when the first preset condition is met; Determine whether the pending trigger time meets the second preset condition, wherein the second preset condition is that the pending trigger time is greater than the first preset time; the first preset time is to prevent large deviations during sampling, or reduce the corresponding sampling data spikes, and to trigger the braking mechanism after the data has stabilized for a certain period of time; if the pending trigger time does not meet the second preset condition, the braking mechanism is not triggered. If the time to be triggered meets the second preset condition, then the braking mechanism is triggered to establish the factory-side triggering strategy; Correspondingly, the process of determining the user-side triggering strategy includes: Obtain the current motor speed value of the electric tailgate; Determine whether the motor speed value meets a third preset condition, wherein the third preset condition is that the motor speed value exceeds a second threshold. If the third preset condition is met, the braking mechanism is triggered to establish the user-side triggering strategy.

6. A brake protection device for an electric tailgate, characterized in that, include: Memory, used to store computer programs; A processor, configured to implement the steps of the brake protection method for the electric tailgate as described in any one of claims 1 to 4 when executing the computer program.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the braking protection method for the electric tailgate as described in any one of claims 1 to 4.

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