New energy vehicle torque monitoring method and device, computer device and storage medium

Abstract

The application relates to a new energy vehicle torque monitoring method and device, computer equipment and a storage medium. The method comprises the following steps: obtaining an accelerator pedal stroke signal, a gear lever position signal and a vehicle speed signal and forming a torque control signal; calculating a driver's required torque according to the torque control signal; calculating a safe torque value under a current working condition according to the torque control signal; calculating a difference value ATq of the driver's required torque and the safe torque value under the current working condition; calculating an acceleration increment delta a according to the difference value ATq and a vehicle weight M, wherein delta a = ATq / M; when the absolute value of the acceleration increment |delta a| is greater than an acceleration threshold value, timing is started, and when the timing duration is greater than a preset time threshold value, it is judged that a required torque monitoring fault occurs. The method can monitor the required torque of the driver, limit the torque output of the power source when it is found that the analyzed torque does not deviate from the required torque of the driver, and improves the torque safety from the source.

Description

Technical Field

[0001] This application relates to the field of torque monitoring technology for new energy vehicles, and in particular to a method, device, computer equipment, and storage medium for monitoring torque in new energy vehicles. Background Technology

[0002] In recent years, with the development of electronic technology and increasingly complex electrical architectures, the probability of malfunctions in electronic control equipment has increased. Among these, torque monitoring failures pose the greatest safety risks, making accurate identification of vehicle torque safety faults particularly important.

[0003] Currently, vehicle torque monitoring primarily focuses on the execution level. When the monitored torque output exceeds the driver's expectations, resulting in unexpected acceleration / velocity / displacement, the torque output is directly cut off, achieving zero torque output and controlling the vehicle to a safe state. In reality, monitoring at the torque execution level addresses the issue of inaccurate torque execution control; it can only control the vehicle to a safe state after unexpected acceleration occurs. However, it cannot solve the problem of inaccurate torque analysis calculations. Summary of the Invention

[0004] Based on this, the present invention provides a method, device, computer equipment, and storage medium for monitoring torque in new energy vehicles, solving the drawback of the original torque monitoring system which only works when the vehicle experiences unexpected acceleration. By monitoring torque based on demand, the problem of inaccurate torque calculations is avoided, thus improving torque safety levels from the source.

[0005] On the one hand, a method for monitoring torque in new energy vehicles is provided, the method comprising:

[0006] Acquire accelerator pedal travel signal, gear shift lever position signal, and vehicle speed signal to generate torque control signal;

[0007] The driver's required torque is calculated based on the torque control signal;

[0008] Calculate the safe torque value under the current operating condition based on the torque control signal;

[0009] Calculate the difference ΔTq between the driver's required torque and the safe torque value under the current operating conditions;

[0010] The acceleration increment Δa is calculated based on the difference ΔTq and the vehicle weight M, where Δa = ΔTq / M;

[0011] Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a demand torque monitoring fault has occurred.

[0012] In one embodiment, after determining that a demand torque monitoring fault has occurred, the method further includes:

[0013] When a torque demand monitoring failure occurs, the vehicle controller is put into a safe state.

[0014] In one embodiment, the safety state includes: controlling the vehicle controller (VCU) to set the required torque of the motor controller (MCU) to zero, setting the required torque of the engine management system (EMS) to zero, and requesting the battery controller (BMS) to disconnect the main relay.

[0015] In one embodiment, the acceleration threshold is 0.2g; and / or, the accelerator pedal travel signal includes a first accelerator pedal travel signal and a second accelerator pedal travel signal.

[0016] In one embodiment, the method further includes:

[0017] When it is determined that no torque demand monitoring fault has occurred, the engine controller and the motor controller are controlled according to the received torque demand from the driver.

[0018] On the other hand, a torque monitoring device for new energy vehicles is provided. The device includes a vehicle controller, which includes an application layer and a monitoring layer. The application layer includes an input signal processing unit and a driver demand torque calculation unit. The monitoring layer includes a safety signal processing unit, a safety torque signal calculation unit, and a demand torque monitoring unit.

[0019] The input signal processing unit and the safety signal processing unit are used to acquire accelerator pedal travel signal, gear shift lever position signal and vehicle speed signal and form torque control signal;

[0020] The driver demand torque calculation unit is used to calculate the driver's demand torque based on the torque control signal;

[0021] The safe torque signal calculation unit is used to calculate the safe torque value under the current operating condition based on the torque control signal;

[0022] The required torque monitoring unit is used to calculate the difference △Tq between the driver's required torque and the safe torque value under the current operating conditions. Based on the difference △Tq and the vehicle weight M, the acceleration increment △a is calculated, where △a = △Tq / M. Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a required torque monitoring fault has occurred.

[0023] Furthermore, the application layer also includes a torque limiting unit, an engine controller, and a motor controller;

[0024] The demand torque monitoring unit is used to send the driver's demand torque to the torque limiting unit when it is determined that no demand torque monitoring fault has occurred.

[0025] The torque limiting unit is used to control the engine controller and the motor controller according to the received torque demand from the driver.

[0026] Furthermore, the monitoring layer also includes an entry security processing mechanism unit;

[0027] The demand torque monitoring unit is used to send a safety processing instruction to the safety processing mechanism unit when it is determined that a demand torque monitoring failure has occurred.

[0028] The safety processing mechanism unit is used to control the vehicle controller to enter a safe state when a demand torque monitoring fault occurs.

[0029] In another aspect, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:

[0030] Acquire accelerator pedal travel signal, gear shift lever position signal, and vehicle speed signal to generate torque control signal;

[0031] The driver's required torque is calculated based on the torque control signal;

[0032] Calculate the safe torque value under the current operating condition based on the torque control signal;

[0033] Calculate the difference ΔTq between the driver's required torque and the safe torque value under the current operating conditions;

[0034] The acceleration increment Δa is calculated based on the difference ΔTq and the vehicle weight M, where Δa = ΔTq / M;

[0035] Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a demand torque monitoring fault has occurred.

[0036] In another aspect, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0037] Acquire accelerator pedal travel signal, gear shift lever position signal, and vehicle speed signal to generate torque control signal;

[0038] The driver's required torque is calculated based on the torque control signal;

[0039] Calculate the safe torque value under the current operating condition based on the torque control signal;

[0040] Calculate the difference ΔTq between the driver's required torque and the safe torque value under the current operating conditions;

[0041] The acceleration increment Δa is calculated based on the difference ΔTq and the vehicle weight M, where Δa = ΔTq / M;

[0042] Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a demand torque monitoring fault has occurred.

[0043] The aforementioned new energy vehicle torque monitoring method, device, computer equipment, and storage medium monitor the torque demand of the driver. When it is found that the analyzed torque does not deviate from the driver's demand, the torque output of the power source is limited, which greatly improves torque safety from the source. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0045] Figure 1 This is a schematic diagram of the structure of a new energy vehicle torque monitoring device corresponding to the application environment of the new energy vehicle torque monitoring method in one embodiment.

[0046] Figure 2 This is a schematic diagram of the monitoring layer control algorithm flow of the vehicle controller in a torque monitoring device for new energy vehicles in one embodiment;

[0047] Figure 3 This is a flowchart illustrating a method for monitoring the torque of a new energy vehicle in one embodiment.

[0048] Figure 4 This is an internal structural diagram of a computer device in one embodiment. Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Example

[0050] In the era of new energy vehicles, the power source for a vehicle can be either an engine or an electric motor, or even a multi-power source vehicle that combines both. The Vehicle Control Unit (VCU) is the core of vehicle control, controlling the Engine Management System (EMS) and the Motor Controller (MCU), thereby controlling the torque of the engine and motor. As the control unit that issues torque request commands, the VCU must be kept in a safe and reliable operating state, accurately interpreting the driver's torque requirements.

[0051] The torque monitoring system provided by this invention adds demand-side torque monitoring on the basis of the original execution torque layer monitoring. It includes two parts: application layer control algorithm and monitoring layer control algorithm. The two sets of control algorithms are stored in different areas of the controller to ensure the independence of the two algorithms.

[0052] like Figure 1 As shown, the application layer control algorithm and the monitoring layer control algorithm independently acquire the first accelerator pedal travel signal, the second accelerator pedal travel signal, the gear shift lever position signal, and the vehicle speed signal, respectively. After appropriate signal processing, the application layer control algorithm parses the driver's required torque TqReq. Simultaneously, the monitoring layer control algorithm performs safety processing on the signals and calculates the safe torque value TqSafety under the current operating condition. The monitoring layer control algorithm monitors the required torque by comparing the difference between TqReq and TqSafety. Only when the torque monitoring passes can the required torque command be sent to the engine controller (EMS) and / or the motor controller (MCU). If the torque monitoring fails, the safety processing mechanism is activated.

[0053] Specifically, such as Figure 2 As shown, the monitoring layer control algorithm calculates the acceleration increment Δa based on the difference ΔTq between the driver's required torque TqReq and the safe torque value TqSafety, where Δa = ΔTq / M, and M is the vehicle weight. Timing begins when the absolute value of the acceleration increment |Δa| is greater than 0.2g. When the timing duration exceeds a preset time T (can be calibrated, recommended value 0.6s), a required torque monitoring fault is triggered, and the vehicle controller needs to enter a safe state. This safe state includes, but is not limited to: the vehicle controller (VCU) setting the required torque to the motor controller (MCU) to zero, setting the required torque to the engine management system (EMS) to zero, and requesting the battery controller (BMS) to disconnect the main relay.

[0054] The present invention relates to a torque monitoring method for new energy vehicles based on demand torque, the specific implementation of which is as follows:

[0055] S11: The VCU application layer control algorithm identifies the driver's intention and parses the driver's required torque TqReq by collecting the first accelerator pedal travel signal, the second accelerator pedal travel signal, the gear shift lever position signal, and the vehicle speed signal.

[0056] S12: The vehicle controller (VCU) monitoring layer control algorithm calculates the safe torque value TqSafety under the current operating conditions by collecting the first accelerator pedal travel signal, the second accelerator pedal travel signal, the gear shift lever position signal, and the vehicle speed signal.

[0057] S13: The control algorithm of the vehicle controller (VCU) monitoring layer calculates the difference △Tq between TqReq and TqSafety;

[0058] S14: The control algorithm of the vehicle controller (VCU) monitoring layer calculates the acceleration increment △a based on △Tq and vehicle weight M (△a=△Tq / M).

[0059] S15: The control algorithm of the vehicle controller (VCU) monitoring layer judges the size of |△a|. When |△a| is greater than 0.2g, the timer is started; otherwise, the timer is cleared.

[0060] S16: The control algorithm of the vehicle controller (VCU) monitoring layer makes a real-time judgment on the timing duration t of the timer. When t is greater than the preset time T, it is determined that a demand torque monitoring fault has occurred.

[0061] S17: After a torque demand monitoring fault occurs, the vehicle controller needs to enter a safe state. The safe state includes, but is not limited to: the vehicle controller (VCU) setting the torque demand of the motor controller (MCU) to zero, setting the torque demand of the engine management system (EMS) to zero, and requesting the battery controller (BMS) to disconnect the main relay. Example

[0062] Example 2 includes all the technical features of Example 1.

[0063] like Figure 3 As shown, Embodiment 2 of the present invention provides a method for monitoring the torque of a new energy vehicle, comprising the following steps:

[0064] Step S1: Acquire the accelerator pedal travel signal, gear shift lever position signal, and vehicle speed signal to generate a torque control signal;

[0065] Step S2: Calculate the driver's required torque based on the torque control signal;

[0066] Step S3: Calculate the safe torque value under the current operating condition based on the torque control signal;

[0067] Step S4: Calculate the difference △Tq between the driver's required torque and the safe torque value under the current operating conditions;

[0068] Step S5: Calculate the acceleration increment Δa based on the difference ΔTq and the vehicle weight M, where Δa = ΔTq / M;

[0069] Step S6: When the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, timing begins, and when the timing duration is greater than the preset time threshold, it is determined that a demand torque monitoring fault has occurred.

[0070] like Figure 3 As shown, in this embodiment, after the step of determining that a demand torque monitoring fault has occurred, the method further includes:

[0071] Step S7: When a demand torque monitoring fault occurs, control the vehicle controller to enter a safe state.

[0072] In this embodiment, the safety state includes: setting the required torque of the vehicle controller (VCU) to the motor controller (MCU) to zero, setting the required torque of the engine management system (EMS) to zero, and requesting the battery controller (BMS) to disconnect the main relay.

[0073] In this embodiment, the acceleration threshold is 0.2g; and / or, the accelerator pedal travel signal includes a first accelerator pedal travel signal and a second accelerator pedal travel signal.

[0074] In this embodiment, the method further includes:

[0075] When it is determined that no torque demand monitoring fault has occurred, the engine controller and the motor controller are controlled according to the received torque demand from the driver.

[0076] The aforementioned torque monitoring method for new energy vehicles monitors the driver's required torque. When the analyzed torque is found to be within the driver's range, the torque output of the power source is limited, significantly improving torque safety from the source.

[0077] It should be understood that, although Figure 3 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 3At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps. Example

[0078] In Example 3, please refer to Figure 1 A torque monitoring device for new energy vehicles is provided. The device includes a vehicle controller, which comprises an application layer and a monitoring layer. The application layer includes an input signal processing unit and a driver-demand torque calculation unit. The monitoring layer includes a safety signal processing unit, a safety torque signal calculation unit, and a demand torque monitoring unit.

[0079] The input signal processing unit and the safety signal processing unit are used to acquire accelerator pedal travel signal, gear shift lever position signal and vehicle speed signal and form torque control signal.

[0080] The driver's required torque calculation unit is used to calculate the driver's required torque based on the torque control signal.

[0081] The safe torque signal calculation unit is used to calculate the safe torque value under the current operating condition based on the torque control signal.

[0082] The required torque monitoring unit is used to calculate the difference △Tq between the driver's required torque and the safe torque value under the current operating conditions. Based on the difference △Tq and the vehicle weight M, the acceleration increment △a is calculated, where △a = △Tq / M. Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a required torque monitoring fault has occurred.

[0083] Furthermore, the application layer also includes a torque limiting unit, an engine controller, and a motor controller. The demand torque monitoring unit, when determining that no demand torque monitoring fault has occurred, sends the driver's demand torque to the torque limiting unit; the torque limiting unit controls the engine controller and the motor controller based on the received driver's demand torque.

[0084] Furthermore, the monitoring layer also includes an entry safety processing mechanism unit; the demand torque monitoring unit is used to send a safety processing instruction to the entry safety processing mechanism unit when it determines that a demand torque monitoring fault has occurred.

[0085] The safety processing mechanism unit is used to control the vehicle controller to enter a safe state when a demand torque monitoring fault occurs.

[0086] The aforementioned torque monitoring device for new energy vehicles monitors the driver's required torque. When it detects that the analyzed torque does not deviate from the driver's required torque, it limits the torque output of the power source, greatly improving torque safety from the source.

[0087] Specific limitations regarding the torque monitoring device for new energy vehicles can be found in the limitations of the torque monitoring method for new energy vehicles mentioned above, and will not be repeated here. Each module in the aforementioned torque monitoring device for new energy vehicles can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module. Example

[0088] In embodiment 4, a computer device is provided, which may be a server, and its internal structure diagram may be as follows. Figure 4 As shown, the computer device includes a processor, memory, network interface, and database connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database stores torque monitoring data for new energy vehicles. The network interface communicates with external terminals via a network connection. When the processor executes the computer program, it implements a torque monitoring method for new energy vehicles.

[0089] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0090] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:

[0091] Acquire accelerator pedal travel signal, gear shift lever position signal, and vehicle speed signal to generate torque control signal;

[0092] The driver's required torque is calculated based on the torque control signal;

[0093] Calculate the safe torque value under the current operating condition based on the torque control signal;

[0094] Calculate the difference ΔTq between the driver's required torque and the safe torque value under the current operating conditions;

[0095] The acceleration increment Δa is calculated based on the difference ΔTq and the vehicle weight M, where Δa = ΔTq / M;

[0096] Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a demand torque monitoring fault has occurred.

[0097] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0098] The step of determining that a demand torque monitoring fault has occurred also includes:

[0099] When a torque demand monitoring failure occurs, the vehicle controller is put into a safe state.

[0100] The safety status includes: setting the required torque of the vehicle controller (VCU) to the motor controller (MCU) to zero, setting the required torque of the engine management system (EMS) to zero, and requesting the battery controller (BMS) to disconnect the main relay.

[0101] The acceleration threshold is 0.2g; and / or, the accelerator pedal travel signal includes a first accelerator pedal travel signal and a second accelerator pedal travel signal.

[0102] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0103] When it is determined that no torque demand monitoring fault has occurred, the engine controller and the motor controller are controlled according to the received torque demand from the driver.

[0104] For specific limitations on the steps implemented by the processor when executing a computer program, please refer to the limitations on the method for monitoring torque in new energy vehicles mentioned above, which will not be repeated here. Example

[0105] In embodiment 5, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, it performs the following steps:

[0106] Acquire accelerator pedal travel signal, gear shift lever position signal, and vehicle speed signal to generate torque control signal;

[0107] The driver's required torque is calculated based on the torque control signal;

[0108] Calculate the safe torque value under the current operating condition based on the torque control signal;

[0109] Calculate the difference ΔTq between the driver's required torque and the safe torque value under the current operating conditions;

[0110] The acceleration increment Δa is calculated based on the difference ΔTq and the vehicle weight M, where Δa = ΔTq / M;

[0111] Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a demand torque monitoring fault has occurred.

[0112] In one embodiment, when the computer program is executed by a processor, it further performs the following steps:

[0113] The step of determining that a demand torque monitoring fault has occurred also includes:

[0114] When a torque demand monitoring failure occurs, the vehicle controller is put into a safe state.

[0115] The safety status includes: setting the required torque of the vehicle controller (VCU) to the motor controller (MCU) to zero, setting the required torque of the engine management system (EMS) to zero, and requesting the battery controller (BMS) to disconnect the main relay.

[0116] The acceleration threshold is 0.2g; and / or, the accelerator pedal travel signal includes a first accelerator pedal travel signal and a second accelerator pedal travel signal.

[0117] In one embodiment, when the computer program is executed by a processor, it further performs the following steps:

[0118] When it is determined that no torque demand monitoring fault has occurred, the engine controller and the motor controller are controlled according to the received torque demand from the driver.

[0119] For specific limitations on the steps implemented when a computer program is executed by a processor, please refer to the limitations on the method for monitoring torque in new energy vehicles mentioned above, which will not be repeated here.

[0120] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0121] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0122] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A new energy vehicle torque monitoring method, characterized in that, include: Acquire accelerator pedal travel signal, gear shift lever position signal, and vehicle speed signal to generate torque control signal; The driver's required torque is calculated based on the torque control signal; Calculate the safe torque value under the current operating condition based on the torque control signal; Calculate the difference ΔTq between the driver's required torque and the safe torque value under the current operating conditions; The acceleration increment Δa is calculated based on the difference ΔTq and the vehicle weight M, where Δa = ΔTq / M; Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a demand torque monitoring fault has occurred. The step of determining that a demand torque monitoring fault has occurred further includes: When a torque demand monitoring failure occurs, the vehicle controller is put into a safe state. The safety status includes: setting the required torque of the vehicle controller to the motor controller to zero, setting the required torque of the engine controller to zero, and requesting the power battery controller to disconnect the main relay; The method further includes: When it is determined that no torque demand monitoring fault has occurred, the engine controller and the motor controller are controlled according to the received torque demand from the driver.

2. The new energy vehicle torque monitoring method according to claim 1, characterized in that, The acceleration threshold is 0.2g; and / or, the accelerator pedal travel signal includes a first accelerator pedal travel signal and a second accelerator pedal travel signal.

3. A new energy vehicle torque monitoring device for implementing the new energy vehicle torque monitoring method of claim 1 or 2, characterized in that, The device includes a vehicle controller, which includes an application layer and a monitoring layer; the application layer includes an input signal processing unit and a driver demand torque calculation unit; the monitoring layer includes a safety signal processing unit, a safety torque signal calculation unit, and a demand torque monitoring unit. The input signal processing unit and the safety signal processing unit are used to acquire accelerator pedal travel signal, gear shift lever position signal and vehicle speed signal and form torque control signal; The driver demand torque calculation unit is used to calculate the driver's demand torque based on the torque control signal; The safe torque signal calculation unit is used to calculate the safe torque value under the current operating condition based on the torque control signal; The required torque monitoring unit is used to calculate the difference △Tq between the driver's required torque and the safe torque value under the current operating conditions. Based on the difference △Tq and the vehicle weight M, the acceleration increment △a is calculated, where △a = △Tq / M. Timing starts when the absolute value of the acceleration increment |△a| is greater than the acceleration threshold, and when the timing duration is greater than the preset time threshold, it is determined that a required torque monitoring fault has occurred.

4. The new energy vehicle torque monitoring device according to claim 3, characterized in that, The application layer also includes a torque limiting unit, an engine controller, and a motor controller; The demand torque monitoring unit is used to send the driver's demand torque to the torque limiting unit when it is determined that no demand torque monitoring fault has occurred. The torque limiting unit is used to control the engine controller and the motor controller according to the received torque demand from the driver.

5. The new energy vehicle torque monitoring device according to claim 4, characterized in that, The monitoring layer also includes an entry security processing mechanism unit; The demand torque monitoring unit is used to send a safety processing instruction to the safety processing mechanism unit when it is determined that a demand torque monitoring failure has occurred. The safety processing mechanism unit is used to control the vehicle controller to enter a safe state when a demand torque monitoring fault occurs.

6. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method of claim 1 or 2.

7. A computer-readable storage medium having stored thereon a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 1 or 2.

Images