A control method and device for light truck climbing and torque increasing, and a medium

Abstract

The application discloses a control method and device for light truck climbing torque increase and a medium, and relates to the technical field of automobile power control. The method comprises the following steps: receiving a continuous kickdown signal sequence, and calling a signal processing algorithm to analyze the kickdown signal sequence; after confirming an activation request of a climbing torque increase mode, collecting battery data through a battery management system; according to the battery data, a current vehicle load and a vehicle speed, calculating an initial target torque increase value and a sustainable time, and packaging the initial target torque increase value and the sustainable time into a control instruction and sending the control instruction to a motor control unit; according to the control instruction, switching to a torque control strategy of an external characteristic curve of torque increase, so as to increase the motor output torque; in response to an exit request, providing an exit early warning prompt to a driver by a control instrument unit, coordinating the motor control unit and the battery management system, and exiting the climbing torque increase mode. The application realizes the function of triggering by intelligently analyzing the kickdown signal sequence of the accelerator pedal, and the operation is intuitive and convenient.

Description

Technical Field

[0001] This application relates to the field of automotive power control technology, and in particular to a control method, device and medium for increasing torque during hill climbing in light trucks. Background Technology

[0002] With the widespread application of new energy technologies in the light truck sector, the requirements for adaptability to complex working conditions are becoming increasingly prominent. Compared to passenger cars, light trucks often face challenges such as overloading and hill climbing, easily leading to scenarios where power demand momentarily exceeds the rated output capacity of the motor. Addressing the urgent need for instantaneous power in heavy-load, hill-climbing, or overtaking conditions for commercial vehicles such as light trucks, how to safely and reliably unleash the peak torque potential of the motor without altering the hardware configuration, thereby improving the vehicle's power response and passability in complex working conditions, has become an important development direction in this field.

[0003] Currently, existing technologies include solutions that temporarily increase torque by adding physical switches or hill-climbing gears. These methods not only increase hardware costs and the complexity of driving operations, but also have a single function triggering mechanism that fails to fully consider multiple constraints such as battery discharge capacity, motor thermal load, and system cooling status. This makes it difficult to intelligently and efficiently unleash the motor's potential while ensuring system safety.

[0004] Based on the above analysis, the problems and shortcomings of the existing technology are as follows:

[0005] Existing vehicle hill-climbing torque-increasing control methods cannot overcome the fundamental contradiction between system safety, functional intelligence, and ease of operation caused by triggering the torque-increasing function through a single physical switch. Summary of the Invention

[0006] This application provides a control method, device, and medium for increasing torque during hill climbing in light trucks. It can solve the fundamental contradiction in the existing vehicle hill climbing torque increase control methods, which cannot overcome the difficulty in coordinating system safety, functional intelligence, and ease of operation caused by triggering the torque increase function through a single physical switch.

[0007] In a first aspect, embodiments of this application provide a control method for hill-climbing torque enhancement in light trucks. The method includes: receiving a continuous kickdown signal sequence from the accelerator pedal via a vehicle control unit, and analyzing the kickdown signal sequence using a signal processing algorithm to confirm whether it is a valid activation request for a hill-climbing torque enhancement mode; after confirming the activation request, collecting battery data via a battery management system; calculating the initial target torque enhancement value and its duration based on the battery data, the current vehicle load, and the vehicle speed, encapsulating it into a control command, and sending it to the motor control unit; switching to a torque control strategy based on the torque enhancement external characteristic curve according to the control command to increase the motor output torque; and in response to an exit request, providing a warning prompt to the driver to exit the mode via a control instrument unit, and coordinating the motor control unit and the battery management system to exit the hill-climbing torque enhancement mode when the final exit conditions are met.

[0008] In one implementation of this application, the vehicle control unit receives a continuous kickdown signal sequence from the accelerator pedal and calls a signal processing algorithm to analyze the kickdown signal sequence. Specifically, this includes: extracting feature parameters such as the duration of pedal depressing, the interval between two depressing operations, and the gradient of pedal opening change from the kickdown signal sequence; calculating the matching degree between the feature parameters and a standard feature template; and determining a valid activation request if the matching degree exceeds a confidence threshold.

[0009] In one implementation of this application, the initial target torque increase value and its duration are calculated based on battery data, current vehicle load, and vehicle speed. Specifically, this includes: querying a preset torque mapping table based on vehicle load and speed to obtain the basic required torque; calculating the battery torque limit value by combining the basic required torque with the maximum peak power provided by the battery management system; and extracting the minimum value among the basic required torque, the battery torque limit value, and the motor peak torque capability as the initial target torque increase value.

[0010] In one implementation of this application, before collecting battery data through the battery management system, the method further includes: obtaining motor coolant flow and temperature data provided by the current thermal management system via the CAN bus; if the coolant flow is lower than the rated value or the temperature is higher than the warning value, suppressing the activation of the ramp-up torque boost mode, and indicating insufficient system cooling conditions through the instrument.

[0011] In one implementation of this application, after switching to the torque control strategy based on the torque-increasing external characteristic curve according to the control command, the method further includes: starting a predictive estimation model for the motor winding temperature; the motor control unit fuses the real-time monitored motor temperature with the results of the predictive estimation model to adjust the motor torque output slope; and before reaching the fusion temperature threshold, a pre-exit request is initiated.

[0012] In one implementation of this application, a predictive estimation model for the motor winding temperature is initiated, specifically including: taking the duration and target torque increase value as inputs, combining the real-time collected motor current and speed, performing forward iterative calculations based on the motor thermodynamic model, and predicting the motor temperature rise curve within a preset time period; comparing the motor temperature rise curve with the motor thermal protection threshold, and correcting the duration.

[0013] In one implementation of this application, the method further includes: receiving road slope information from an in-vehicle navigation system; if a continuous steep slope is indicated ahead and a kickdown signal is detected, then the confidence threshold for mode activation is lowered.

[0014] In one implementation of this application, the method further includes: recording the total number of activations and cumulative duration of the hill-climbing torque boosting mode during each power-on cycle; when the total number of activations and cumulative duration exceed a preset safety limit, locking the hill-climbing torque boosting mode for the current charging cycle and indicating that the hill-climbing torque boosting mode is cooling down via the instrument panel until the vehicle completes a high-voltage power-off and power-on cycle and is reset.

[0015] Secondly, embodiments of this application also provide a control device for hill-climbing torque enhancement in light trucks. The device includes at least one processor and a memory communicatively connected to the at least one processor. The memory stores instructions executable by the at least one processor, which, when executed, enable the at least one processor to: receive a continuous kickdown signal sequence from the accelerator pedal via a vehicle control unit, and analyze the kickdown signal sequence using a signal processing algorithm to confirm whether it is a valid activation request for the hill-climbing torque enhancement mode; after confirming the activation request, collect battery data via a battery management system; calculate the initial target torque enhancement value and its duration based on the battery data, the current vehicle load, and the vehicle speed, encapsulate this as a control instruction, and send it to the motor control unit; switch to a torque control strategy based on the torque-enhancing external characteristic curve to increase the motor output torque; and, in response to an exit request, provide a warning to the driver regarding exiting the mode, and, upon reaching the final exit condition, coordinate the motor control unit and the battery management system to exit the hill-climbing torque enhancement mode.

[0016] Thirdly, this application embodiment also provides a non-volatile computer storage medium for controlling hill-climbing torque enhancement in light trucks, storing computer-executable instructions. These computer-executable instructions are configured to: receive a continuous kickdown signal sequence from the accelerator pedal via the vehicle control unit, and call a signal processing algorithm to analyze the kickdown signal sequence to confirm whether it is a valid activation request for the hill-climbing torque enhancement mode; after confirming the activation request, collect battery data through the battery management system; calculate the initial target torque enhancement value and its duration based on the battery data, current vehicle load, and vehicle speed, encapsulate this as a control instruction, and send it to the motor control unit; according to the control instruction, switch to a torque control strategy based on the torque-enhancing external characteristic curve to increase the motor output torque; in response to an exit request, control the instrument unit to provide a warning prompt to the driver regarding exiting, and when the final exit condition is met, coordinate the motor control unit and the battery management system to exit the hill-climbing torque enhancement mode.

[0017] This application provides a control method, device, and medium for increasing torque during hill climbing in light trucks. It triggers the function by intelligently analyzing the kickdown signal sequence of the accelerator pedal, eliminating the need for any additional hardware switches. This makes operation intuitive and convenient, effectively reducing costs and the probability of misoperation. A multi-system collaborative decision-making mechanism is introduced, where the vehicle control unit comprehensively considers multi-dimensional information such as battery peak output capacity, real-time vehicle load, motor thermal load prediction, and system cooling status, achieving optimal torque distribution within the system's safety boundaries. It features predictive thermal management and smooth exit functions, providing early warnings and linearly reducing torque before the motor overheats, greatly improving system reliability and driving comfort. Through linkage with the navigation system, it achieves predictive function preparation based on road conditions, further enhancing the vehicle's intelligence level and user experience. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 A flowchart of a control method for increasing torque during hill climbing for light trucks, provided as an embodiment of this application;

[0020] Figure 2 A schematic diagram of the torque-increasing external characteristic curve of a control method for increasing torque during hill climbing provided in this application embodiment;

[0021] Figure 3 This is a schematic diagram of the internal structure of a control device for increasing torque during hill climbing in an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] This application provides a control method, device, and medium for increasing torque during hill climbing in light trucks, which solves the fundamental contradiction in the existing vehicle hill climbing torque increase control methods, which cannot overcome the difficulty in coordinating system safety, functional intelligence, and ease of operation caused by triggering the torque increase function through a single physical switch.

[0024] The technical solutions proposed in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] Figure 1 A flowchart illustrating a control method for increasing torque during hill climbing in an embodiment of this application is provided. Figure 1 As shown in the figure, the control method for increasing torque for light trucks when climbing hills, provided in this application embodiment, specifically includes the following steps:

[0026] Step 10: Receive a continuous kickdown signal sequence from the accelerator pedal through the vehicle control unit, and call the signal processing algorithm to analyze the kickdown signal sequence to confirm whether it is a valid activation request for the hill climb torque boost mode.

[0027] In this step, the vehicle control unit (VCU) identifies the driver's true intention and confirms whether to activate the hill climb torque boost mode to avoid misoperation. The VCU receives the kickdown signal continuously emitted by the accelerator pedal, that is, the signal of pressing the accelerator pedal to the bottom twice in a row, and analyzes these signals through a special signal processing algorithm to determine whether the driver really wants to activate the hill climb torque boost mode.

[0028] As an optional embodiment, the vehicle control unit receives a continuous kickdown signal sequence from the accelerator pedal and calls a signal processing algorithm to analyze the kickdown signal sequence. Specifically, it may include: Step 101: Extracting the characteristic parameters of the accelerator pedal pressing duration, the time interval between two pressings, and the pedal opening change gradient in the kickdown signal sequence.

[0029] In this step, the duration the pedal remains fully depressed each time the kickdown is triggered, and the speed at which the accelerator pedal is rapidly depressed from its normal opening to its full position, are measured.

[0030] Step 102: Calculate the matching degree between the feature parameters and the standard feature template. If the matching degree exceeds the confidence threshold, it is determined to be a valid activation request.

[0031] In this step, the parameter range of the valid activation operation stored in the vehicle in advance, the actual parameters extracted, are compared with the parameter range in the standard feature template, and the degree of matching between the two is calculated. When the matching degree exceeds the preset confidence threshold, the VCU determines that it is allowed to enter the hill climbing torque increase mode; otherwise, it is determined to be a misoperation and the mode is not started.

[0032] Step 20: After confirming the activation request for the hill-climbing torque boost mode, collect battery data through the battery management system.

[0033] In this step, after confirming that the driver does indeed need to activate the hill-climbing torque boost mode, the battery management system (BMS) immediately collects key battery status data to provide a basis for subsequent calculations of how much torque can be output and how long it can last. The real-time data collected from the battery includes the current charge level, the maximum output power, the battery temperature, and the health status of the battery cells.

[0034] As an optional embodiment, before collecting battery data through the battery management system, the method may further include: Step 01: Obtain motor coolant flow and temperature data provided by the current thermal management system via the CAN bus.

[0035] In this step, the motor coolant flow rate is the flow velocity of the coolant in the motor heat dissipation circuit, reflecting whether the heat dissipation capacity is sufficient; the motor coolant temperature is the current temperature of the coolant, reflecting the current heat dissipation effect of the motor.

[0036] Step 02: If the coolant flow rate is lower than the rated value or the temperature is higher than the warning value, suppress the activation of the ramp-up torque boost mode and indicate insufficient system cooling conditions through the instrument.

[0037] In this step, the torque boost mode will make the motor work harder and generate more heat. It is essential to ensure that the cooling system is working properly. If the coolant is not hot enough or is already too hot, the torque boost mode will not be activated, and the driver will be alerted to prevent damage to the motor due to poor heat dissipation.

[0038] Step 30: Based on the battery data, as well as the current vehicle load and speed, calculate the initial target torque increase value and its duration, encapsulate it into a control command, and send it to the motor control unit.

[0039] In this step, the additional torque required by the motor in the hill-climbing torque-boosting mode is calculated by combining the battery status, the vehicle's current load and speed. This is the initial target torque increase value, as well as how long this high torque state can be safely maintained. These parameters are then packaged into instructions and sent to the motor control unit (MCU) to guide the motor to execute.

[0040] As an optional embodiment, the initial target torque increase value and duration are calculated based on battery data, current vehicle load and speed. Specifically, this may include: Step 301: Based on vehicle load and speed, a preset torque mapping table is queried to obtain the basic required torque.

[0041] In this step, the torque mapping table is a reference table developed by engineers in advance through a large number of tests. It records the basic torque values ​​required for normal vehicle operation in non-torque-boosting mode under different loads and vehicle speeds.

[0042] Step 302: Calculate the basic required torque and the maximum peak power provided by the battery management system to obtain the battery torque limit value.

[0043] In this step, the battery management system provides the maximum peak power that the battery can currently output. The VCU uses this power data, combined with the basic torque requirement, to calculate the battery torque limit, which is the maximum torque that the battery can support. For example, if the basic torque requirement is 200 N·m, but the battery's current maximum peak power can only support a torque output of 180 N·m (exceeding this value would overload the battery), then the battery torque limit is 180 N·m.

[0044] Step 303: Extract the minimum value among the basic required torque, the battery torque limit value, and the motor peak torque capability, and use it as the initial target torque increase value.

[0045] In this step, to ensure that the torque increase is within the safe range of all systems: if the basic required torque is the minimum, it means that the vehicle does not currently need more torque, and output according to demand is sufficient; if the battery torque limit is the minimum, it means that the battery cannot withstand more torque, and the battery capacity must be the upper limit; if the motor peak torque capacity is the minimum, it means that the motor itself cannot exert more force, and the motor capacity must be the upper limit.

[0046] Step 40: According to the control command, switch to the torque control strategy of the torque increase external characteristic curve to increase the motor output torque.

[0047] In this step, based on the control command generated in step 30, the motor's torque control logic is switched from the normal mode to the torque-increasing external characteristic curve mode, such as... Figure 2 As shown, this allows the motor to output more torque than normal within a safe range, meeting the needs of climbing or heavy loads. The torque-boosting external characteristic curve is a torque output curve pre-calibrated by engineers. Compared to the conventional curve, it allows the motor to output higher torque under specific conditions (such as short-term climbing) without exceeding the motor's hardware limits. After switching to this curve, the motor control unit adjusts the current according to this curve, directly increasing the torque output and helping the vehicle overcome slope resistance.

[0048] As an optional embodiment, after switching to the torque control strategy based on the torque-increasing external characteristic curve according to the control command, the method may further include: step 401: starting a predictive estimation model for the motor winding temperature.

[0049] In this step, when the motor starts to output high torque, the VCU will simultaneously start the motor winding temperature prediction estimation model. This model will estimate the temperature change trend of the motor's internal coils in advance based on the current real-time load torque, running time, ambient temperature and other data of the motor. For example, it predicts that the temperature may rise from 60°C to 70°C in 5 seconds and to 78°C in 10 seconds.

[0050] Step 402: The motor control unit integrates the real-time monitored motor temperature with the results of the predictive estimation model and adjusts the motor torque output slope.

[0051] In this step, the current motor temperature monitored in real time by the sensor is combined with the future temperature trend calculated by the prediction model in step 401 to comprehensively determine the motor's true thermal state. Based on the fused temperature results, the torque output slope, i.e., the rate at which torque increases, is dynamically adjusted. For example, if the predicted temperature rises too quickly, the rate of torque increase is slowed down to prevent the motor from overheating suddenly; if the temperature is controllable, the original slope is maintained.

[0052] Step 403: Initiate a pre-exit request before reaching the fusion temperature threshold.

[0053] In this step, the system will set a fusion temperature threshold, such as 85°C, which is a safety upper limit determined by combining real-time temperature and predicted temperature. When the fused temperature approaches this threshold, such as reaching 80°C, the VCU will send a pre-exit request to the driver and various systems in advance. That is, the instrument panel will indicate that the torque boost mode is about to exit, and at the same time, the motor control unit and battery management system will prepare to switch back to the normal mode.

[0054] This provides sufficient buffer time for the system and driver, preventing the torque boost mode from being forcibly interrupted due to sudden temperature exceeding the limit, ensuring smooth driving, and preventing sudden loss of extra torque that could cause vehicle jerking.

[0055] As an optional embodiment, the predictive estimation model for motor winding temperature is initiated, which may specifically include: Step 4011: Taking the sustainable time and target torque increase value as input, and combining the real-time collected motor current and speed, a forward iterative calculation is performed based on the motor thermodynamic model to predict the motor temperature rise curve within a preset time period.

[0056] In this step, the model collects the motor's current operating current in real time. The higher the current, the more the motor works and the more heat it generates. The model also considers the motor speed, which affects heat dissipation efficiency; lower speeds may slow down heat dissipation. Based on this data, the model calls the motor's thermodynamic model. Higher current leads to faster heat generation, and higher speeds result in better heat dissipation. Through forward iterative calculations—simply put, calculating step-by-step over time—it first calculates the temperature change in the first second, from 50℃ to 52℃; then it uses the result from the first second to calculate the temperature change in the second second, from 52℃ to 55℃; and so on, until it calculates the motor's temperature rise curve for the preset future time period, creating a trend chart recording the temperature change every second.

[0057] Step 4012: Compare the motor temperature rise curve with the motor thermal protection threshold and adjust the duration accordingly.

[0058] In this step, the predicted temperature rise curve is compared with the motor's thermal protection threshold. If the predicted temperature rise curve will not exceed the threshold within the theoretically sustainable time, the original sustainable time remains unchanged. If the predicted temperature rise curve will exceed the threshold within the theoretically sustainable time, the sustainable time is shortened, for example, the original 10 seconds is corrected to 7 seconds to ensure that the temperature does not exceed 85°C within 7 seconds.

[0059] Step 50: In response to the exit request, the control instrument unit provides the driver with a warning prompt for exiting, and when the final exit conditions are met, coordinates the motor control unit and the battery management system to exit the hill-climbing torque boost mode.

[0060] In this step, when the system triggers an exit request, possible reasons include the expiration of the torque boost duration, the motor temperature approaching its upper limit, insufficient battery power, or driver-initiated cancellation. The VCU will immediately instruct the instrument cluster to send a warning message to the driver, such as displaying on the instrument panel that the hill-climbing torque boost mode is about to exit, or reminding the driver through icon flashing or audible alerts, allowing them to prepare in advance. After the warning, the system will continuously monitor whether the final exit conditions are met: the motor temperature has reached the protection threshold, the preset corrected duration has ended, or the battery status does not support continued torque boosting. When the conditions are met, the VCU will actively coordinate two key systems: the motor control unit: instructing it to switch from the torque boost external characteristic curve back to the conventional torque control strategy, gradually reducing the motor output torque to avoid sudden torque drops that could cause vehicle jerking; and the battery management system: notifying it to restore conventional power output management and no longer provide additional power support for the torque boost mode. Finally, the entire system exits the hill-climbing torque boost mode, the vehicle returns to normal driving mode, the instrument cluster updates synchronously, and the torque boost mode icon turns off.

[0061] As an optional embodiment, the method may further include: receiving road gradient information from an in-vehicle navigation system; if a continuous steep slope is indicated ahead and a kickdown signal is detected, then lowering the confidence threshold for mode activation.

[0062] In this step, when the navigation confirms that there is a continuous steep slope ahead and the system detects that the driver has pressed the kickdown signal once, that is, pressed the accelerator pedal all the way down, the VCU will actively lower the confidence threshold for mode activation. Originally, two consecutive kickdown signals and parameters that completely match the standard template were required for activation, with a confidence threshold of 80%; now, because there is a steep slope ahead, only one kickdown signal is needed, and the parameter matching degree reaches 60% to activate.

[0063] As an optional embodiment, the method may further include: recording the total number of activations and cumulative duration of the hill-climbing torque boosting mode during each power-on cycle; when the total number of activations and cumulative duration exceed a preset safety limit, locking the hill-climbing torque boosting mode for the current charging cycle and indicating that the hill-climbing torque boosting mode is cooling down via the instrument panel until the vehicle completes a high-voltage power-off and power-on cycle and is reset.

[0064] In this step, each time the vehicle is powered on, which is a complete driving cycle, from start to stop, the system will automatically record two data points: the total number of times the hill-climbing torque boost mode is activated, for example, 3 times during this driving cycle; and the total duration of each activation, for example, 45 seconds for 3 activations. The system will compare the recorded data with preset safety limits, such as a maximum of 5 activations and a cumulative duration of no more than 60 seconds within a single power-on cycle. If the limits are not exceeded, the torque boost mode can be used normally; if the limits are exceeded, the system will lock the hill-climbing torque boost mode during this charging cycle, and the mode will not be able to start even if the driver triggers the activation conditions.

[0065] The above are embodiments of the method proposed in this application. Based on the same inventive concept, embodiments of this application also provide a control device for increasing torque during hill climbing in light trucks, the structure of which is as follows: Figure 2 As shown.

[0066] Figure 3 This is a schematic diagram of the internal structure of a control device for increasing torque during hill climbing in an embodiment of this application. Figure 3 As shown, the device includes:

[0067] At least one processor 301;

[0068] And a memory 302 that is communicatively connected to at least one processor;

[0069] The memory 302 stores instructions executable by at least one processor. These instructions are executed by at least one processor 301 to enable the processor 301 to: receive a continuous kickdown signal sequence from the accelerator pedal via the vehicle control unit, and analyze the kickdown signal sequence using a signal processing algorithm to confirm whether it is a valid activation request for the hill-climb torque boost mode; after confirming the activation request, collect battery data via the battery management system; calculate the initial target torque boost value and its duration based on the battery data, the current vehicle load, and the vehicle speed, encapsulate this as a control command, and send it to the motor control unit; switch to a torque control strategy based on the torque boost external characteristic curve to increase the motor output torque according to the control command; and, in response to an exit request, provide a warning to the driver regarding the exit, and, upon reaching the final exit condition, coordinate with the motor control unit and the battery management system to exit the hill-climb torque boost mode.

[0070] Some embodiments of this application provide corresponding to Figure 1 A non-volatile computer storage medium for controlling hill-climbing torque enhancement in light trucks stores computer-executable instructions. These instructions are configured to: receive a continuous kickdown signal sequence from the accelerator pedal via the vehicle control unit, and analyze the kickdown signal sequence using a signal processing algorithm to confirm whether it is a valid activation request for the hill-climbing torque enhancement mode; after confirming the activation request, collect battery data through the battery management system; calculate the initial target torque enhancement value and its duration based on the battery data, current vehicle load, and vehicle speed, encapsulate this as a control instruction, and send it to the motor control unit; according to the control instruction, switch to a torque control strategy based on the torque-enhancing external characteristic curve to increase the motor output torque; in response to an exit request, the control instrument unit provides a warning prompt to the driver to exit, and when the final exit conditions are met, coordinate the motor control unit and the battery management system to exit the hill-climbing torque enhancement mode.

[0071] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the embodiments for IoT devices and media are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0072] The systems, media, and methods provided in this application are one-to-one correspondences. Therefore, the systems and media also have similar beneficial technical effects as their corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, the beneficial technical effects of the systems and media will not be repeated here.

[0073] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0074] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0075] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0076] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0077] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0078] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0079] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0080] It should also be noted that 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 limitation, 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.

[0081] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control method for increasing torque during hill climbing in light trucks, characterized in that, The method includes: The vehicle control unit receives a continuous kickdown signal sequence from the accelerator pedal and calls a signal processing algorithm to analyze the kickdown signal sequence to confirm whether it is a valid activation request for the hill-climbing torque boost mode. Specifically, this includes: extracting the characteristic parameters of the accelerator pedal depress duration, the interval between two depresses, and the pedal opening change gradient from the kickdown signal sequence; calculating the matching degree between the characteristic parameters and a standard feature template; if the matching degree exceeds a confidence threshold, it is determined to be a valid activation request. After confirming the activation request of the hill-climbing torque-boosting mode, battery data is collected through the battery management system; Based on the battery data, current vehicle load, and speed, the initial target torque increase value and its duration are calculated and encapsulated as control commands, which are then sent to the motor control unit. Specifically, this includes: querying a preset torque mapping table based on the vehicle load and speed to obtain the basic required torque; calculating the battery torque limit value by combining the basic required torque with the maximum peak power provided by the battery management system; and extracting the minimum value among the basic required torque, the battery torque limit value, and the motor's peak torque capability as the initial target torque increase value. According to the control command, switch to the torque control strategy based on the torque increase external characteristic curve to increase the motor output torque; In response to the exit request, the control instrument unit provides the driver with an exit warning, and when the final exit conditions are met, it coordinates the motor control unit and the battery management system to exit the hill-climbing torque boost mode; After switching to the torque control strategy based on the torque increase external characteristic curve according to the control command, the method further includes: starting a predictive estimation model for the motor winding temperature; the motor control unit fuses the real-time monitored motor temperature with the result of the predictive estimation model and adjusts the torque output slope of the motor; and before reaching the fusion temperature threshold, initiates a pre-exit request. The method further includes: receiving road gradient information from the vehicle navigation system; if a continuous steep slope is indicated ahead and a kickdown signal is detected, the confidence threshold for mode activation is lowered.

2. The control method for increasing torque during hill climbing of a light truck according to claim 1, characterized in that, Before collecting battery data through the battery management system, the method further includes: The motor coolant flow and temperature data provided by the current thermal management system are obtained via the CAN bus. If the coolant flow rate is lower than the rated value or the temperature is higher than the warning value, the ramp-up torque boost mode will be suppressed and activated, and the instrument will indicate that the system cooling conditions are insufficient.

3. The control method for increasing torque during hill climbing of a light truck according to claim 1, characterized in that, The predictive estimation model for the starting effect on the motor winding temperature specifically includes: Using the sustained time and target torque increase value as input, and combining the real-time collected motor current and speed, forward iterative calculations are performed based on the motor thermodynamic model to predict the motor temperature rise curve within a preset time period. The motor temperature rise curve is compared with the motor thermal protection threshold, and the allowable duration is adjusted accordingly.

4. The control method for increasing torque during hill climbing of a light truck according to claim 1, characterized in that, The method further includes: During each power-on cycle, record the total number of activations and the cumulative duration of the ramp-up torque-increasing mode; When the total number of activations and the cumulative duration exceed the preset safety limit, the hill-climbing torque boost mode will be locked for the current charging cycle, and the instrument panel will indicate that the hill-climbing torque boost mode is cooling down until the vehicle completes a high-voltage power-off and power-on reset.

5. A control device for increasing torque during hill climbing in light trucks, characterized in that, The device includes: At least one processor; And, a memory communicatively connected to the at least one processor; The memory stores instructions executable by the at least one processor, which, when executed by the at least one processor, enable the at least one processor to: Perform the steps of the control method for increasing torque for climbing hills of a light truck as described in any one of claims 1-4.

6. A non-volatile computer storage medium for controlling torque increase during hill climbing in light trucks, storing computer-executable instructions, characterized in that, The computer-executable instructions are set as follows: Perform the steps of the control method for increasing torque for climbing hills of a light truck as described in any one of claims 1-4.

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