Energy-saving control method and system for vehicle driving motor and electronic equipment

Abstract

The invention discloses an energy-saving control method and system for a vehicle driving motor and electronic equipment, and relates to the field of motor control, and the method comprises the steps: A1, setting a high-efficiency curve L1 or / and L2 of the motor; a2, whether the current vehicle working condition meets the dynamic control mode triggering condition or not is judged by detecting the vehicle speed, the accelerator opening degree, the brake pedal opening degree, the required torque and the torque change gradient; if yes, the driving motor enters a dynamic control mode; if not, maintaining the current control mode; a3, the dynamic control mode comprises the steps that the driving motor works intermittently, and the torque 0 and the torque of the high-efficiency curve corresponding to the rotating speed are output.

Description

Technical Field

[0001] This application relates to the field of motor control, and in particular to energy-saving control methods for vehicle drive motors, energy-saving control systems for vehicle drive motors, electronic devices, storage media, and vehicle platforms. Background Technology

[0002] Driven by both the global energy crisis and environmental protection demands, new energy vehicles have become a core direction for the transformation of the automotive industry. As the "heart" of its power output, the drive motor's energy consumption directly determines the vehicle's range. In daily driving, the motor consumes 60% to 80% of the vehicle's electricity. Every 1% improvement in energy efficiency can increase the vehicle's range by 3-5 km. Therefore, energy-saving control technology for drive motors has become a key focus of industry competition. Moreover, the demand for extended driving range is even more pronounced for current new energy commercial vehicles. Therefore, improving drive motor efficiency and reducing overall vehicle energy consumption is crucial for new energy vehicles, especially pure electric commercial vehicles.

[0003] Currently, mainstream drive motors are mainly permanent magnet synchronous motors and AC asynchronous motors, which generally adopt strategies such as field-oriented control (FOC) and vector control to achieve power regulation. Although these can meet basic speed regulation requirements, they have limitations in terms of energy-saving optimization. Existing control methods are mostly based on static calibration under rated operating conditions, which is difficult to adapt to complex dynamic scenarios: when driving at high speed, the iron loss of the motor can reach 8%-12% of the rated power with the increase of frequency, resulting in a sharp drop in energy efficiency under high-speed conditions; in high-current conditions such as rapid acceleration and climbing, the copper loss of the windings accounts for more than 50%, and the skin effect further increases the resistance by an additional 10%-20%; while under non-rated operating conditions such as low speed and high load, the motor often operates in an inefficient region with an efficiency of less than 80%, and the energy consumption increases by 20%-30%. Current energy-saving control strategies for drive motors primarily focus on improving overall efficiency by optimizing gear ratios and implementing multi-motor collaborative control to concentrate the drive motor's operating range within the high-efficiency zone. However, vehicle operating conditions are complex and variable, while the drive motor's operating range is determined based on these conditions. This results in a significant proportion of the drive motor still operating in its inefficient zone. This invention proposes a dynamic drive motor control method to reduce the proportion of the drive motor operating in its inefficient zone and improve overall efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving control method for a vehicle drive motor, an energy-saving control system for a vehicle drive motor, an electronic device, a storage medium, and a vehicle platform, thereby solving at least one of a number of technical problems.

[0005] Existing drive motor control is based on static calibration under rated operating conditions, which cannot adapt to complex dynamic scenarios such as high speed, rapid acceleration, climbing, and low speed with high load. This leads to a surge in motor iron and copper losses and a high proportion of inefficient operation.

[0006] Existing optimization methods, such as gear shifting and multi-motor coordination, are insufficient to address the challenges of varying operating conditions and still cannot effectively reduce the proportion of inefficient motor operation. The core business algorithm lacks unified encapsulation, and multiple implementation versions lead to logical conflicts and poor reusability.

[0007] This invention provides the following solution:

[0008] According to a first aspect of the present invention, an energy-saving control method for a vehicle drive motor is provided, comprising:

[0009] Set the high-efficiency curves L1 and / or L2 for the motor;

[0010] By detecting vehicle speed, throttle opening, brake pedal opening, required torque, and torque change gradient, it is determined whether the current vehicle operating condition meets the triggering conditions of dynamic control mode.

[0011] If the conditions are met, the drive motor will enter dynamic control mode;

[0012] If the conditions are not met, the current control mode will be maintained.

[0013] The dynamic control mode includes the drive motor working intermittently, outputting torque with zero torque and a high-efficiency curve corresponding to the speed.

[0014] Furthermore, including:

[0015] Formula for calculating intermittent working time: t(s) = · This corresponds to the motor drive state;

[0016] in, This represents the required torque value at the current engine speed. This represents the torque value on the high-efficiency curve L1 at the current speed. The intermittent frequency for intermittent operation;

[0017] Formula for calculating intermittent working time: t(s) = · This corresponds to the motor drive state;

[0018] in, This represents the required torque value at the current engine speed. This represents the torque value on the high-efficiency curve L2 at the current speed. The intermittent frequency for intermittent operation;

[0019] Among them, intermittent frequency , NVH calibration helps avoid the resonant frequencies of the chassis, cab, and motor housing.

[0020] It also includes intermittent frequency. , The frequency is limited to a threshold that can be perceived by drivers and passengers.

[0021] Furthermore, including:

[0022] Based on the connection of the positive torque data points with the highest efficiency at each speed of the drive motor and the connection of the negative torque data points with the highest efficiency at each speed, the high efficiency curves L1 and L2 of the motor are set.

[0023] Furthermore, determining the current vehicle operating condition includes:

[0024] Determine if the vehicle is traveling at high speed;

[0025] If yes, then the dynamic control mode will not be triggered;

[0026] If yes, then determine whether the vehicle is in motor-driven mode;

[0027] If yes, then determine whether the vehicle is in energy recovery mode;

[0028] If yes, then the dynamic control mode will not be triggered.

[0029] Furthermore, determining whether the vehicle is in electric motor drive mode includes:

[0030] If yes, then determine whether the required torque value is located below the efficient curve L1;

[0031] If yes, then the dynamic control mode will not be triggered;

[0032] If yes, then determine whether the torque change gradient value is less than the threshold D1;

[0033] If yes, then the dynamic control mode will not be triggered;

[0034] If so, then the dynamic control mode is triggered.

[0035] Furthermore, determining whether a vehicle is in energy recovery mode includes:

[0036] If yes, then determine whether the required torque value is above the efficient curve L2;

[0037] If yes, then the dynamic control mode will not be triggered;

[0038] If yes, then determine whether the torque change gradient value is less than the threshold D2;

[0039] If yes, then the dynamic control mode will not be triggered;

[0040] If so, then the dynamic control mode is triggered.

[0041] Furthermore, it also includes:

[0042] Determining whether a vehicle is traveling at high speed includes determining whether the vehicle speed value is higher than a threshold of 1.

[0043] Determining whether the vehicle is in electric motor drive mode includes determining whether the throttle opening value is greater than threshold 2 and the brake pedal opening value is less than threshold 3;

[0044] Determining whether a vehicle is in energy recovery mode includes determining that the throttle opening value is less than threshold 4 and the required torque value is less than threshold 5.

[0045] Among them, based on the acceptable range of vehicle performance, thresholds 1, 2, 3, 4 and 5 are set.

[0046] According to a second aspect of the present invention, an energy-saving control system for a vehicle drive motor is provided, comprising:

[0047] High efficiency curve module, used to set the high efficiency curve L1 and / or L2 of the motor;

[0048] The trigger judgment module is used to determine whether the current vehicle operating conditions meet the trigger conditions of dynamic control mode by detecting vehicle speed, throttle opening, brake pedal opening, required torque and torque change gradient.

[0049] If the conditions are met, the drive motor will enter dynamic control mode;

[0050] If the conditions are not met, the current control mode will be maintained.

[0051] The dynamic control mode execution module is used to drive the motor to work intermittently, outputting torque with a high-efficiency curve of 0 torque and corresponding speed.

[0052] According to a third aspect of the present invention, an electronic device is provided, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0053] The memory stores a computer program, which, when executed by the processor, causes the processor to perform steps such as an energy-saving control method for a vehicle drive motor.

[0054] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform steps of an energy-saving control method such as that for a vehicle drive motor.

[0055] According to a fifth aspect of the present invention, a vehicle platform is provided, comprising:

[0056] Electronic devices, used to implement energy-saving control methods such as those for vehicle drive motors;

[0057] The processor runs programs, and when the programs are running, they execute steps such as energy-saving control methods for vehicle drive motors based on data output from electronic devices.

[0058] Storage medium used to store programs that, when running, execute steps such as energy-saving control methods for vehicle drive motors based on data output from electronic devices.

[0059] The above solution achieves the following beneficial technical effects:

[0060] This application defines dual high-efficiency curves to clearly distinguish between high-efficiency and low-efficiency torque ranges, providing a precise reference for subsequent judgment on whether the motor is operating inefficiently, making energy-saving control more targeted.

[0061] This application uses multi-layered operating condition judgment logic to accurately screen out inefficient operating conditions in scenarios such as high-speed drive and energy recovery, avoids false triggering of dynamic control mode, and ensures the adaptability and reliability of control strategy.

[0062] This application reduces the operating time of the motor in the inefficient zone by using a high-frequency intermittent working mode, thereby improving the motor drive efficiency and reducing energy consumption under operating conditions; it precisely matches the torque demand according to the formula, which not only meets the driving power / energy recovery needs, but also maximizes the use of the high-efficiency range.

[0063] This application avoids resonance problems and ensures vehicle operation stability by limiting the frequency X; at the same time, it does not affect the driver and passenger experience, making the dynamic energy-saving control mode feasible for practical application. Attached Figure Description

[0064] Figure 1 This is a flowchart of an energy-saving control method for a vehicle drive motor provided by one or more embodiments of the present invention.

[0065] Figure 2 This is a structural diagram of an energy-saving control system for a vehicle drive motor provided in one or more embodiments of the present invention.

[0066] Figure 3 This is a schematic diagram of vehicle drive motor trigger control provided in a specific embodiment of the present invention.

[0067] Figure 4 This is a schematic diagram of a vehicle motor efficiency MAP provided in a specific embodiment of the present invention.

[0068] Figure 5 This is a block diagram of an electronic device structure for an energy-saving control method for a vehicle drive motor provided in one or more embodiments of the present invention. Detailed Implementation

[0069] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are one module of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0070] Figure 1 This is a flowchart of an energy-saving control method for a vehicle drive motor provided by one or more embodiments of the present invention.

[0071] like Figure 1 The energy-saving control method for the vehicle drive motor shown includes:

[0072] Step A1: Set the high efficiency curves L1 and / or L2 for the motor;

[0073] Step A2: By detecting vehicle speed, throttle opening, brake pedal opening, required torque and torque change gradient, determine whether the current vehicle operating condition meets the triggering conditions of dynamic control mode.

[0074] If the conditions are met, the drive motor will enter dynamic control mode;

[0075] If the conditions are not met, the current control mode will be maintained.

[0076] Step A3, the dynamic control mode includes driving the motor to work intermittently, outputting 0 torque and the torque of the high-efficiency curve corresponding to the speed.

[0077] In this embodiment, it includes:

[0078] Formula for calculating intermittent working time: t(s) = · This corresponds to the motor drive state;

[0079] in, This represents the required torque value at the current engine speed. This represents the torque value on the high-efficiency curve L1 at the current speed. The intermittent frequency for intermittent operation;

[0080] Formula for calculating intermittent working time: t(s) = · This corresponds to the motor drive state;

[0081] in, This represents the required torque value at the current engine speed. This represents the torque value on the high-efficiency curve L2 at the current speed. The intermittent frequency for intermittent operation;

[0082] Among them, intermittent frequency , NVH calibration helps avoid the resonant frequencies of the chassis, cab, and motor housing.

[0083] It also includes intermittent frequency. , The frequency is limited to a threshold that can be perceived by drivers and passengers.

[0084] In this embodiment, it includes:

[0085] Based on the connection of the positive torque data points with the highest efficiency at each speed of the drive motor and the connection of the negative torque data points with the highest efficiency at each speed, the high efficiency curves L1 and L2 of the motor are set.

[0086] In this embodiment, determining the current vehicle operating condition includes:

[0087] Determine if the vehicle is traveling at high speed;

[0088] If yes, then the dynamic control mode will not be triggered;

[0089] If yes, then determine whether the vehicle is in motor-driven mode;

[0090] If yes, then determine whether the vehicle is in energy recovery mode;

[0091] If yes, then the dynamic control mode will not be triggered.

[0092] In this embodiment, determining whether the vehicle is in motor-driven mode includes:

[0093] If yes, then determine whether the required torque value is located below the efficient curve L1;

[0094] If yes, then the dynamic control mode will not be triggered;

[0095] If yes, then determine whether the torque change gradient value is less than the threshold D1;

[0096] If yes, then the dynamic control mode will not be triggered;

[0097] If so, then the dynamic control mode is triggered.

[0098] In this embodiment, determining whether the vehicle is in an energy recovery state includes:

[0099] If yes, then determine whether the required torque value is above the efficient curve L2;

[0100] If yes, then the dynamic control mode will not be triggered;

[0101] If yes, then determine whether the torque change gradient value is less than the threshold D2;

[0102] If yes, then the dynamic control mode will not be triggered;

[0103] If so, then the dynamic control mode is triggered.

[0104] In this embodiment, it also includes:

[0105] Determining whether a vehicle is traveling at high speed includes determining whether the vehicle speed value is higher than a threshold of 1.

[0106] Determining whether the vehicle is in electric motor drive mode includes determining whether the throttle opening value is greater than threshold 2 and the brake pedal opening value is less than threshold 3;

[0107] Determining whether a vehicle is in energy recovery mode includes determining that the throttle opening value is less than threshold 4 and the required torque value is less than threshold 5.

[0108] Among them, based on the acceptable range of vehicle performance, thresholds 1, 2, 3, 4 and 5 are set.

[0109] Figure 2 This is a structural diagram of an energy-saving control system for a vehicle drive motor provided in one or more embodiments of the present invention.

[0110] like Figure 2 The energy-saving control system for the vehicle drive motor shown includes:

[0111] High efficiency curve module, used to set the high efficiency curve L1 and / or L2 of the motor;

[0112] The trigger judgment module is used to determine whether the current vehicle operating conditions meet the trigger conditions of dynamic control mode by detecting vehicle speed, throttle opening, brake pedal opening, required torque and torque change gradient.

[0113] If the conditions are met, the drive motor will enter dynamic control mode;

[0114] If the conditions are not met, the current control mode will be maintained.

[0115] The dynamic control mode execution module is used to drive the motor to work intermittently, outputting torque with a high-efficiency curve of 0 torque and corresponding speed.

[0116] It is worth noting that although this system / device only discloses the above-mentioned modules / units, it does not mean that this system / device is limited to the above-mentioned basic functional modules. On the contrary, what this invention intends to express is that, based on the above-mentioned basic functional modules, those skilled in the art can add one or more functional modules in combination with the prior art to form an infinite number of embodiments or technical solutions. That is to say, this system is open rather than closed. It cannot be assumed that the scope of protection of the claims of this invention is limited to the above-disclosed basic functional modules just because this embodiment only discloses a few basic functional modules.

[0117] In one specific embodiment, a dynamic energy-saving control method for a drive motor is disclosed. This method, based on traditional drive motor control methods, dynamically controls the intermittent operation of the motor. A high-efficiency curve for the motor is defined. When the motor operates under low-efficiency and low-torque conditions, the intermittent operation reduces the proportion of the inefficient region that would normally operate below the high-efficiency curve, thereby improving the overall efficiency of the drive motor. It should be explained that intermittent operation refers to, under acceptable driving performance conditions, transforming the operating point where the required torque is in the inefficient region into a high-frequency intermittent control, resulting in zero torque and high-efficiency torque output. This satisfies the torque requirements of the operating conditions while improving the overall efficiency of the drive motor. Simulation results show that under common operating conditions in commercial vehicles, this control method can improve motor drive efficiency by 0.8-1.0% and reduce energy consumption by 0.6-0.8%.

[0118] In this embodiment, as Figure 3 As shown:

[0119] S0: Determine whether the current vehicle is in a high-speed driving state (vehicle speed is higher than threshold 1). If the condition is met, proceed to S1; if the condition is not met, proceed to S3. In this embodiment, the speed condition of the motor is limited to be efficient and energy-saving by threshold 1.

[0120] S1: Determine whether the vehicle is currently in a driving state (throttle opening is greater than threshold 2 and brake pedal opening is less than threshold 3). If the condition is met, proceed to S11; if the condition is not met, proceed to S2. In this embodiment, threshold 2 and threshold 3 are used to limit the driving state control conditions of the motor to be highly efficient and energy-saving.

[0121] S11: Determine the current torque requirement for the drive motor (e.g., ...) Figure 4 If P1 is below curve L1, proceed to S12 if the condition is met; otherwise, proceed to S3. In this embodiment, the controllable area of ​​the motor for high efficiency and energy saving is calibrated by the positional relationship between point P1 and curve L1.

[0122] S12: Determine whether the torque change gradient is less than the threshold D1. If the condition is met, proceed to S4; if the condition is not met, proceed to S3. In this embodiment, the thresholds D1 and D2 are used to limit the torque gradient change boundary with high efficiency and energy saving.

[0123] S2: Determine whether the current vehicle is in energy recovery state (throttle opening is less than threshold 4 and required torque is less than threshold 5). If the condition is met, proceed to S21; if the condition is not met, proceed to S3. In this embodiment, threshold 4 and threshold 5 are used to limit the energy recovery control conditions of the motor for high efficiency and energy saving.

[0124] S21: Determine whether the current torque demand for the drive motor is above curve L2. If the condition is met, proceed to S22; otherwise, proceed to S3.

[0125] S22: Determine whether the torque change gradient is less than the threshold D2. If the condition is met, proceed to S4; otherwise, proceed to S3.

[0126] S3: The drive motor has not entered dynamic control mode;

[0127] S4: The drive motor enters dynamic control mode;

[0128] Where: L1 represents the highest efficiency positive torque at each speed, forming a high-efficiency curve, such as... Figure 4 As shown; conversely, L2 is the negative torque with the highest efficiency at each speed, forming a high-efficiency curve (related diagrams, and the principle of the relationship between P2 and L2, which are not marked in the diagrams, and P1 and L1, is the same, so I will not go into too much detail).

[0129] For example, after the drive motor enters dynamic control mode, it operates intermittently at a certain frequency X. The formula for calculating the duration of each intermittent operation per second is as follows:

[0130] t(s) = · ;

[0131] Required torque value at the current speed

[0132] Torque value on the high-efficiency curve L1 at the current speed

[0133] X: Intermittent operating frequency. X needs to avoid the resonant frequencies of the chassis, cab, motor housing, etc. through NVH calibration, etc. At the same time, it needs to pass the drivability evaluation, that is, X needs to be higher than the frequency threshold that can be perceived by the driver and passengers.

[0134] Thresholds 1, 2, 3, 4, and 5 can be set according to the acceptable range of vehicle performance. That is, the dynamic control mode needs to set thresholds based on the actual performance capabilities of the vehicle. The energy-saving effect achieved in this embodiment must be realized within the actual performance capabilities of the vehicle.

[0135] Figure 5 This is a block diagram of an electronic device structure for an energy-saving control method for a vehicle drive motor provided in one or more embodiments of the present invention.

[0136] like Figure 5 As shown, this application provides an electronic device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0137] The memory stores a computer program that, when executed by a processor, causes the processor to perform steps of an energy-saving control method for a vehicle drive motor.

[0138] This application also provides a computer-readable storage medium storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of an energy-saving control method for a vehicle drive motor.

[0139] This application also provides a vehicle platform, including:

[0140] Electronic equipment, steps for implementing an energy-saving control method for a vehicle drive motor;

[0141] The processor runs a program, and when the program runs, it executes the steps of an energy-saving control method for the vehicle's drive motor based on data output from electronic devices.

[0142] A storage medium for storing a program that, when running, executes steps of an energy-saving control method for a vehicle drive motor based on data output from an electronic device.

[0143] The communication bus mentioned in the above electronic devices can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0144] The electronic device comprises a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory. The operating system can be any one or more computer operating systems that control the electronic device through processes, such as Linux, Unix, Android, iOS, or Windows. Furthermore, in this embodiment of the invention, the electronic device can be a smartphone, tablet computer, or other handheld device, or a desktop computer, portable computer, or other electronic device; there is no particular limitation in this embodiment.

[0145] In this embodiment of the invention, the executing entity for electronic device control can be an electronic device itself, or a functional module within an electronic device capable of calling and executing a program. The electronic device can obtain the firmware corresponding to the storage medium. This firmware is provided by the supplier, and different storage media may have the same or different firmware; no limitation is made here. After obtaining the firmware corresponding to the storage medium, the electronic device can write this firmware into the storage medium; specifically, it burns the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented using existing technology, and will not be elaborated upon in this embodiment of the invention.

[0146] Electronic devices can also obtain reset commands corresponding to the storage media. The reset commands corresponding to the storage media are provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and no restrictions are imposed here.

[0147] At this time, the storage medium of the electronic device is a storage medium on which the corresponding firmware has been written. The electronic device can respond to the reset command corresponding to the storage medium on which the corresponding firmware has been written, thereby resetting the storage medium on which the corresponding firmware has been written according to the reset command. The process of resetting the storage medium according to the reset command can be implemented by existing technology and will not be described in detail in this embodiment of the invention.

[0148] For ease of description, the above devices are described separately by function as various units and modules. Of course, in implementing this application, the functions of each unit and module can be implemented in one or more software and / or hardware.

[0149] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0150] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0151] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, or the module that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or certain modules of the embodiments of this application.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to the modules or all technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving control method for a vehicle drive motor, characterized in that, include: Set the high efficiency curves L1 and / or L2 for the motor; By detecting vehicle speed, throttle opening, brake pedal opening, required torque, and torque change gradient, it is determined whether the current vehicle operating condition meets the triggering conditions of dynamic control mode. If the conditions are met, the drive motor will enter dynamic control mode; If the conditions are not met, the current control mode will be maintained. The dynamic control mode includes driving the motor to work intermittently, outputting torque with a high-efficiency curve of 0 torque and corresponding speed.

2. The energy-saving control method for a vehicle drive motor according to claim 1, characterized in that, include: Formula for calculating intermittent working time: t(s) = · This corresponds to the motor drive state; in, This represents the required torque value at the current engine speed. This represents the torque value on the high-efficiency curve L1 at the current speed. The intermittent frequency for intermittent operation; Formula for calculating intermittent working time: t(s) = · This corresponds to the motor drive state; in, This represents the required torque value at the current engine speed. This represents the torque value on the high-efficiency curve L2 at the current speed. The intermittent frequency for intermittent operation; Among them, intermittent frequency , NVH calibration helps avoid the resonant frequencies of the chassis, cab, and motor housing. It also includes intermittent frequency. , The frequency limit is set above the threshold that can be perceived by drivers and passengers.

3. The energy-saving control method for a vehicle drive motor according to claim 2, characterized in that, include: Based on the connection of the positive torque data points with the highest efficiency at each speed of the drive motor and the connection of the negative torque data points with the highest efficiency at each speed, the high efficiency curves L1 and L2 of the motor are set.

4. The energy-saving control method for a vehicle drive motor according to claim 3, characterized in that, The determination of the current vehicle operating condition includes: Determine if the vehicle is traveling at high speed; If yes, then the dynamic control mode will not be triggered; If yes, then determine whether the vehicle is in motor-driven mode; If yes, then determine whether the vehicle is in energy recovery mode; If yes, then the dynamic control mode will not be triggered.

5. The energy-saving control method for a vehicle drive motor according to claim 4, characterized in that, The determination of whether the vehicle is in motor-driven mode includes: If yes, then determine whether the required torque value is located below the efficient curve L1; If yes, then the dynamic control mode will not be triggered; If yes, then determine whether the torque change gradient value is less than the threshold D1; If yes, then the dynamic control mode will not be triggered; If so, then the dynamic control mode is triggered.

6. The energy-saving control method for a vehicle drive motor according to claim 5, characterized in that, The determination of whether the vehicle is in energy recovery mode includes: If yes, then determine whether the required torque value is above the efficient curve L2; If yes, then the dynamic control mode will not be triggered; If yes, then determine whether the torque change gradient value is less than the threshold D2; If yes, then the dynamic control mode will not be triggered; If so, then the dynamic control mode is triggered.

7. The energy-saving control method for a vehicle drive motor according to claim 6, characterized in that, Also includes: Determining whether a vehicle is traveling at high speed includes determining whether the vehicle speed value is higher than a threshold of 1. Determining whether the vehicle is in electric motor drive mode includes determining whether the throttle opening value is greater than threshold 2 and the brake pedal opening value is less than threshold 3; Determining whether a vehicle is in energy recovery mode includes determining whether the throttle opening value is less than threshold 4 and the required torque value is less than threshold 5. Among them, based on the acceptable range of vehicle performance, thresholds 1, 2, 3, 4 and 5 are set.

8. An energy-saving control system for a vehicle drive motor, characterized in that, include: High efficiency curve module, used to set the high efficiency curve L1 and / or L2 of the motor; The trigger judgment module is used to determine whether the current vehicle operating conditions meet the trigger conditions of dynamic control mode by detecting vehicle speed, throttle opening, brake pedal opening, required torque and torque change gradient. If the conditions are met, the drive motor will enter dynamic control mode; If the conditions are not met, the current control mode will be maintained. The dynamic control mode execution module is used to drive the motor to work intermittently, outputting torque with a high-efficiency curve of 0 torque and corresponding speed.

9. An electronic device, characterized in that, include: The processor, communication interface, memory, and communication bus are connected, with the processor, communication interface, and memory communicating with each other via the communication bus. The memory stores a computer program that, when executed by a processor, causes the processor to perform the steps of the energy-saving control method for the vehicle drive motor as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The device stores a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of the energy-saving control method for a vehicle drive motor as described in any one of claims 1 to 7.

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