Electric drive system matching method and device, equipment and storage medium

Abstract

The application discloses an electric drive system matching method, device and equipment and a storage medium, and relates to the technical field of automobiles. The method comprises the following steps: obtaining target peak power of a target motor based on pre-acquired vehicle parameters; selecting a plurality of motors and a plurality of reducers based on the target peak power of the target motor; arranging and combining the plurality of motors and the plurality of reducers to obtain a combined set of the motors and the reducers; and performing comprehensive benefit evaluation on the combined set of the motors and the reducers to obtain a combination of the motors and the reducers that meets preset conditions. The application can improve the reliability of the electric drive system.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a method, apparatus, device, and storage medium for matching an electric drive system. Background Technology

[0002] With increasing emphasis on sustainable transportation and environmental protection, the automotive industry is actively exploring more efficient and environmentally friendly transportation solutions. Against this backdrop, the design of electric drive systems for automobiles is becoming increasingly important.

[0003] Currently, when designing automotive electric drive systems, only the matching of the motor and battery is considered. The consideration of motor selection is too simplistic, which reduces the reliability of automotive electric drive systems. Summary of the Invention

[0004] The main objective of this invention is to provide an electric drive system matching method, apparatus, device, and storage medium, aiming to solve the problem that the current design of automotive electric drive systems is too simplistic in terms of motor selection, which reduces the reliability of automotive electric drive systems.

[0005] To achieve the above objectives, the present invention provides a matching method for an electric drive system, the electric drive system including a motor and a reducer, the method comprising: The target peak power of the target motor is calculated based on the pre-acquired vehicle parameters; Select several motors and several reducers based on the target peak power of the target motor; Arrange and combine the plurality of motors and the plurality of reducers to obtain a combination set of motors and reducers; A comprehensive benefit evaluation is performed on the combination of the motor and reducer to obtain a combination of motor and reducer that meets the preset conditions.

[0006] Optionally, the step of calculating the target peak power of the target motor based on the preset vehicle parameters includes: The rated power of the target motor is calculated based on the pre-acquired vehicle parameters; The third peak power of the target motor is calculated based on the pre-acquired vehicle parameters; The target peak power of the target motor is calculated based on the rated power and the third peak power.

[0007] Optionally, the step of selecting several motors and several reducers based on the target peak power of the target motor includes: The relationship between the reducer speed ratio and the motor peak torque is obtained based on the target peak power of the target motor. The plurality of motors and the plurality of reducers are selected based on the correspondence between the speed ratio of the reducer and the peak torque of the motor, and the speed ratio boundary of the reducer.

[0008] Optionally, the step of calculating the third peak power of the motor based on the pre-acquired vehicle parameters includes: The vehicle acceleration time is calculated based on the preset initial vehicle base speed, the preset first peak power of the target motor, and the pre-acquired vehicle parameters. The vehicle acceleration time is evaluated based on the vehicle acceleration time requirement. If the vehicle acceleration time meets the vehicle acceleration time requirement, the vehicle base speed for climbing is calculated based on the maximum gradeability. The vehicle's base speed during the climb and the initial vehicle base speed are evaluated. If the vehicle base speed during the climb and the initial vehicle base speed meet the preset acceleration performance requirements, then the first peak power is taken as the third peak power.

[0009] Optionally, the step of evaluating the vehicle acceleration time based on the vehicle acceleration time requirement, and if the vehicle acceleration time meets the vehicle acceleration time requirement, then the step of calculating the vehicle base speed based on the maximum gradeability includes: The vehicle acceleration time is evaluated based on the first vehicle acceleration time requirement; If the vehicle acceleration time meets the first vehicle acceleration time requirement, then the vehicle acceleration time is evaluated based on the second vehicle acceleration time requirement; If the vehicle acceleration time meets the second vehicle acceleration time requirement, then the vehicle base speed for climbing is calculated based on the maximum gradeability.

[0010] Optionally, after the step of evaluating the vehicle acceleration time based on the first vehicle acceleration time requirement, the method further includes: If the vehicle acceleration time does not meet the first vehicle acceleration time requirement, the first peak power is corrected to obtain the second peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the second peak power meets the first vehicle acceleration time requirement. Following the step of evaluating the vehicle acceleration time based on the second vehicle acceleration time requirement, the method further includes: If the vehicle acceleration time does not meet the second vehicle acceleration time requirement, the second peak power is corrected to obtain a third peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

[0011] Optionally, the step of evaluating the vehicle's base speed for climbing and the initial vehicle base speed includes: If the vehicle base speed for climbing and the initial vehicle base speed do not meet the preset acceleration performance requirements, the initial vehicle base speed is corrected to obtain a second vehicle base speed, until the vehicle acceleration time calculated based on the second vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

[0012] Optionally, the step of conducting a comprehensive benefit evaluation of the combination set of motors and reducers to obtain a combination of motors and reducers that meets preset conditions includes: Energy consumption calculations are performed on the combination set of the motor and reducer to obtain the energy consumption set; Cost analysis is performed on the combination set of motors and reducers based on the energy consumption set to obtain the combination of motors and reducers that meets the preset conditions.

[0013] Optionally, the step of calculating the energy consumption of the combination set of the motor and the reducer to obtain the energy consumption set includes: Based on the vehicle network big data operating conditions, the combination set of the motor and reducer is calculated to obtain the big data operating condition energy consumption set. The energy consumption set under the regulatory operating conditions is calculated based on the combination set of the motor and reducer; The energy consumption set is obtained by performing a weighted energy consumption calculation on the energy consumption set of the big data operating conditions and the energy consumption set of the regulatory operating conditions.

[0014] Optionally, the step of performing a cost analysis on the combination set of the motor and the reducer based on the energy consumption calculation results to obtain the combination of motor and reducer that meets the preset conditions includes: Obtain the minimum energy consumption in the energy consumption set; A cost analysis is performed on the motor and reducer combination corresponding to the minimum energy consumption. If the cost of the motor and reducer combination corresponding to the minimum energy consumption does not meet the preset standard, then the minimum energy consumption is removed from the energy consumption set, and the following step is executed: obtain the minimum energy consumption in the energy consumption set; If the cost of the motor and reducer combination corresponding to the minimum energy consumption reaches the preset standard, then the motor and reducer combination corresponding to the minimum energy consumption will be used as the combination of motor and reducer that meets the preset conditions.

[0015] This invention also proposes an electric drive system matching device, the device comprising: The power calculation module is used to calculate the target peak power of the target motor based on the pre-acquired vehicle parameters; The component selection module is used to select several motors and several reducers based on the target peak power of the target motor. The permutation and combination module is used to arrange and combine the plurality of motors and the plurality of reducers to obtain a combination set of motors and reducers; The benefit evaluation module is used to perform a comprehensive benefit evaluation on the combination set of motors and reducers to obtain a combination of motors and reducers that meets preset conditions.

[0016] This invention also proposes a device, which includes a memory, a processor, and an electric drive system matching program stored in the memory and executable on the processor. When the electric drive system matching program is executed by the processor, it implements the electric drive system matching method as described above.

[0017] This invention also proposes a computer-readable storage medium storing an electric drive system matching program, which, when executed by a processor, implements the electric drive system matching method as described above.

[0018] The electric drive system matching method, apparatus, device, and storage medium proposed in this invention calculate the target peak power of the target motor based on pre-acquired vehicle parameters; select several motors and several reducers based on the target peak power of the target motor; arrange and combine the several motors and several reducers to obtain a set of combinations of motors and reducers; and perform a comprehensive benefit evaluation on the set of combinations of motors and reducers to obtain a combination of motors and reducers that meets preset conditions. This invention selects several motors and several reducers based on the target peak power of the motor and obtains a set of combinations of motors and reducers. It can consider the influence of the reducer speed ratio on the motor selection, and perform a comprehensive benefit evaluation on the set of combinations of motors and reducers. This allows for the evaluation of the merits of motors and reducers from a comprehensive benefit perspective, thereby matching a more reliable electric drive system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the functional modules of the equipment to which the electric drive system matching device of the present invention belongs; Figure 2 This is a flowchart illustrating an exemplary embodiment of the electric drive system matching method of the present invention; Figure 3 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 4 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 5 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 6 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 7 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 8 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 9 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 10 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 11 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 12 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention; Figure 13 This is a flowchart illustrating the process of obtaining the combination set of motor and reducer in the electric drive system matching method of the present invention; Figure 14 This is a flowchart illustrating the comprehensive benefit evaluation of the combination set of motors and reducers in the electric drive system matching method of the present invention, to obtain a combination of motors and reducers that meets preset conditions.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The main solution of this invention is as follows: The target peak power of the target motor is calculated based on pre-acquired vehicle parameters; several motors and several reducers are selected based on the target peak power of the target motor; the several motors and several reducers are arranged and combined to obtain a set of combinations of motors and reducers; a comprehensive benefit evaluation is performed on the set of combinations of motors and reducers to obtain a combination of motors and reducers that meets preset conditions. This invention selects several motors and several reducers based on the target peak power of the motor and obtains a set of combinations of motors and reducers. It can consider the influence of the reducer speed ratio on motor selection, and the comprehensive benefit evaluation of the set of combinations of motors and reducers allows for the assessment of the merits of motors and reducers from a comprehensive benefit perspective, thereby matching a more reliable electric drive system.

[0023] In recent years, the new energy industry has developed rapidly, especially in the field of new energy vehicles, which has an increasingly higher market share. However, new energy vehicles also face many challenges, one of which is driving range. In addition to the vehicle's size and the driver's driving habits, driving range is also greatly affected by the operating conditions and the proper matching of the power system. At present, the industry's main development model is the series model, where the electric drive system is designed and developed layer by layer. Although the development process is simple, if the result is not ideal, it is necessary to design and develop from scratch.

[0024] The embodiments of the present invention take into account that: currently, when designing automotive electric drive systems, only the matching of the motor and battery is considered, and the consideration of motor selection is too simplistic, which reduces the reliability of automotive electric drive systems.

[0025] Therefore, this invention proposes a solution that selects several motors and several reducers based on the target peak power of the motor, and obtains a combination set of motors and reducers. The influence of the reducer speed ratio on the motor selection can be considered, and a comprehensive benefit evaluation of the combination set of motors and reducers can be performed. The advantages and disadvantages of motors and reducers can be evaluated from the perspective of comprehensive benefits, thereby matching a more reliable electric drive system.

[0026] Specifically, refer to Figure 1 , Figure 1 This is a functional module diagram of the device to which the electric drive system matching device of the present invention belongs. The electric drive system matching device can be a data processing device independent of the device, which can be carried on the device in hardware or software form. This device can be a smart mobile terminal with data processing capabilities, such as a mobile phone or tablet computer, or it can be a fixed device or server with data processing capabilities.

[0027] In this embodiment, the device to which the electric drive system matching device belongs includes at least an output module 110, a processor 120, a memory 130, and a communication module 140.

[0028] The memory 130 stores the operating system and the electric drive system matching program; the output module 110 may be a display screen, etc. The communication module 140 may include a WIFI module and a Bluetooth module, etc., and communicates with external devices or servers through the communication module 140.

[0029] When the electric drive system matching program in memory 130 is executed by the processor, it performs the following steps: The target peak power of the target motor is calculated based on the pre-acquired vehicle parameters; Select several motors and several reducers based on the target peak power of the target motor; Arrange and combine the plurality of motors and the plurality of reducers to obtain a combination set of motors and reducers; A comprehensive benefit evaluation is performed on the combination of the motor and reducer to obtain a combination of motor and reducer that meets the preset conditions.

[0030] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: The rated power of the target motor is calculated based on the pre-acquired vehicle parameters; The third peak power of the target motor is calculated based on the pre-acquired vehicle parameters; The target peak power of the target motor is calculated based on the rated power and the third peak power.

[0031] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: The relationship between the reducer speed ratio and the motor peak torque is obtained based on the target peak power of the target motor. The plurality of motors and the plurality of reducers are selected based on the correspondence between the speed ratio of the reducer and the peak torque of the motor, and the speed ratio boundary of the reducer.

[0032] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: The vehicle acceleration time is calculated based on the preset initial vehicle base speed, the preset first peak power of the target motor, and the pre-acquired vehicle parameters. The vehicle acceleration time is evaluated based on the vehicle acceleration time requirement. If the vehicle acceleration time meets the vehicle acceleration time requirement, the vehicle base speed for climbing is calculated based on the maximum gradeability. The vehicle's base speed during the climb and the initial vehicle base speed are evaluated. If the vehicle base speed during the climb and the initial vehicle base speed meet the preset acceleration performance requirements, then the first peak power is taken as the third peak power.

[0033] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: The vehicle acceleration time is evaluated based on the first vehicle acceleration time requirement; If the vehicle acceleration time meets the first vehicle acceleration time requirement, then the vehicle acceleration time is evaluated based on the second vehicle acceleration time requirement; If the vehicle acceleration time meets the second vehicle acceleration time requirement, then the vehicle base speed for climbing is calculated based on the maximum gradeability.

[0034] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: If the vehicle acceleration time does not meet the first vehicle acceleration time requirement, the first peak power is corrected to obtain the second peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the second peak power meets the first vehicle acceleration time requirement. If the vehicle acceleration time does not meet the second vehicle acceleration time requirement, the second peak power is corrected to obtain a third peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

[0035] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: If the vehicle base speed for climbing and the initial vehicle base speed do not meet the preset acceleration performance requirements, the initial vehicle base speed is corrected to obtain a second vehicle base speed, until the vehicle acceleration time calculated based on the second vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

[0036] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: Energy consumption calculations are performed on the combination set of the motor and reducer to obtain the energy consumption set; Cost analysis is performed on the combination set of motors and reducers based on the energy consumption set to obtain the combination of motors and reducers that meets the preset conditions.

[0037] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: Based on the vehicle network big data operating conditions, the combination set of the motor and reducer is calculated to obtain the big data operating condition energy consumption set. The energy consumption set under the regulatory operating conditions is calculated based on the combination set of the motor and reducer; The energy consumption set is obtained by performing a weighted energy consumption calculation on the energy consumption set of the big data operating conditions and the energy consumption set of the regulatory operating conditions.

[0038] Furthermore, when the electric drive system matching program in memory 130 is executed by the processor, it also performs the following steps: Obtain the minimum energy consumption in the energy consumption set; A cost analysis is performed on the motor and reducer combination corresponding to the minimum energy consumption. If the cost of the motor and reducer combination corresponding to the minimum energy consumption does not meet the preset standard, then the minimum energy consumption is removed from the energy consumption set, and the following step is executed: obtain the minimum energy consumption in the energy consumption set; If the cost of the motor and reducer combination corresponding to the minimum energy consumption reaches the preset standard, then the motor and reducer combination corresponding to the minimum energy consumption will be used as the combination of motor and reducer that meets the preset conditions.

[0039] This embodiment, through the above-described scheme, specifically calculates the target peak power of the target motor based on pre-acquired vehicle parameters; selects several motors and several reducers based on the target peak power of the target motor; arranges and combines the several motors and several reducers to obtain a set of combinations of motors and reducers; and performs a comprehensive benefit evaluation on the set of combinations of motors and reducers to obtain a combination of motors and reducers that meets preset conditions. This embodiment of the invention selects several motors and several reducers based on the target peak power of the motor and obtains a set of combinations of motors and reducers. It can consider the influence of the reducer speed ratio on the motor selection, and perform a comprehensive benefit evaluation on the set of combinations of motors and reducers. This allows for the evaluation of the merits of motors and reducers from a comprehensive benefit perspective, thereby matching a more reliable electric drive system.

[0040] Based on, but not limited to, the above-described device architecture, embodiments of the method of the present invention are proposed.

[0041] The execution subject of the method in this embodiment can be an electric drive system matching device. This electric drive system matching device can be a device that is independent of the device and capable of data processing. It can be carried on the device in the form of hardware or software.

[0042] Reference Figure 2 , Figure 2 This is a flowchart illustrating an exemplary embodiment of the electric drive system matching method of the present invention. The electric drive system includes a motor and a reducer, and the electric drive system matching method includes: Step S10: Calculate the target peak power of the target motor based on the pre-acquired vehicle parameters.

[0043] Based on the vehicle and customer requirements, the vehicle parameters are compiled as input, including but not limited to: maximum speed, 0-80km / h acceleration time, 50-80km / h acceleration time, maximum gradeability, slope sustained speed, vehicle weight, drag coefficient, and wheel rolling radius.

[0044] Among them, the target motor is the most suitable motor obtained by matching the electric drive system.

[0045] Among them, the peak power of the target motor is obtained by calculating the pre-acquired vehicle parameters, which is the target peak power.

[0046] Specifically, the initial peak power calculated from the pre-acquired vehicle parameters can be iteratively optimized based on certain conditions to finally obtain the peak power of the target motor.

[0047] Step S20: Select several motors and several reducers based on the target peak power of the target motor.

[0048] Among them, the relationship between the peak torque of the motor and the speed ratio of the reducer can be obtained based on the target peak power of the target motor.

[0049] Then, based on the correspondence between the peak torque of the motor and the speed ratio of the reducer, and combined with the speed ratio boundary, several motors and several reducers that meet the requirements are obtained.

[0050] Step S30: Arrange and combine the plurality of motors and the plurality of reducers to obtain a combination set of motors and reducers.

[0051] Specifically, the combination of motors and reducers can be tagged as a set. ,in, This represents each type of motor and accelerator combination, with a total of n combinations.

[0052] Step S40: Perform a comprehensive benefit evaluation on the combination set of motor and reducer to obtain a combination of motor and reducer that meets the preset conditions.

[0053] The comprehensive benefit assessment of the combination of motors and reducers can include one or a combination of assessment methods such as cost analysis, energy consumption assessment, and environmental impact assessment.

[0054] Then, select the combination that meets the preset conditions.

[0055] The preset conditions may include one or more conditions such as the cost of the combination of motor and reducer not exceeding the preset maximum budget, the energy consumption of the combination of motor and reducer not exceeding the preset maximum energy consumption, and the environmental impact of the combination of motor and reducer not exceeding a preset threshold.

[0056] This embodiment, through the above-described scheme, calculates the target peak power of the target motor based on pre-acquired vehicle parameters; selects several motors and several reducers based on the target peak power of the target motor; arranges and combines the several motors and several reducers to obtain a set of combinations of motors and reducers; and performs a comprehensive benefit evaluation on the set of combinations of motors and reducers to obtain a combination of motors and reducers that meets preset conditions. This embodiment of the invention selects several motors and several reducers based on the target peak power of the motor and obtains a set of combinations of motors and reducers. It can consider the influence of the reducer speed ratio on the motor selection, and perform a comprehensive benefit evaluation on the set of combinations of motors and reducers. This allows for the evaluation of the merits of motors and reducers from a comprehensive benefit perspective, thereby matching a more reliable electric drive system.

[0057] Reference Figure 3 , Figure 3 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0058] Based on the above Figure 2 In the embodiment shown, step S10, calculating the target peak power of the target motor based on pre-acquired vehicle parameters, includes: Step S11: Calculate the rated power of the target motor based on the pre-acquired vehicle parameters.

[0059] The formula for calculating the rated power of the target motor based on the pre-acquired vehicle parameters is as follows:

[0060] in, This refers to the rated power of the motor. This refers to the power output of the motor corresponding to the vehicle's highest continuous speed. The motor power required for the vehicle to climb a hill continuously; the rated power of the motor. Take the maximum value between the two.

[0061] Step S12: Calculate the third peak power of the target motor based on the pre-acquired vehicle parameters.

[0062] The vehicle acceleration time can be calculated based on a preset initial vehicle base speed, a preset first peak power of the target motor, and the pre-acquired vehicle parameters.

[0063] Then, the vehicle acceleration time is evaluated based on the vehicle acceleration time requirement. If the vehicle acceleration time meets the vehicle acceleration time requirement, the vehicle base speed for climbing is calculated based on the maximum gradeability.

[0064] Then, the vehicle base speed during the climb and the initial vehicle base speed are evaluated.

[0065] If the vehicle base speed during the climb and the initial vehicle base speed meet the preset acceleration performance requirements, then the first peak power is taken as the third peak power.

[0066] Step S13: Calculate the target peak power of the target motor based on the rated power and the third peak power.

[0067] The formula for calculating the target peak power of the target motor based on the rated power and the third peak power is as follows:

[0068] in, This represents the peak power of the motor. This refers to the rated power of the motor.

[0069] The embodiments of the present invention, through the calculation of rated power, third peak power and target peak power, can more accurately match the performance of the target motor with the requirements of the vehicle, thereby ensuring that the motor outputs the required power stably and reliably within the normal operating range, and improving the matching degree and performance of the vehicle system.

[0070] Reference Figure 4 , Figure 4 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0071] Based on the above Figure 2 In the embodiment shown, step S20, selecting a plurality of motors and a plurality of reducers based on the target peak power of the target motor, includes: Step S21: Based on the target peak power of the target motor, obtain the correspondence between the reducer speed ratio and the motor peak torque.

[0072] The peak torque of the motor can be calculated based on the target peak power, and the calculation formula is as follows:

[0073] Among them, T m P is the peak torque of the motor. m Let n be the target peak power and n be the motor speed.

[0074] Then, the relationship between the output reducer speed ratio and the peak torque of the motor is as follows:

[0075] in, For the speed ratio of the reducer, The power required for the vehicle's maximum climbing height. For mechanical efficiency, This represents the peak torque of the motor.

[0076] Step S22: Select the plurality of motors and the plurality of reducers based on the correspondence between the speed ratio of the reducer and the peak torque of the motor, and the speed ratio boundary of the reducer.

[0077] Among them, according to the speed ratio of the reducer With peak torque of the motor Based on the corresponding relationship and combined with the speed ratio boundary, select multiple motors and multiple reducers that meet the requirements.

[0078] This invention, by combining the speed ratio limits of the reducer, can screen out suitable combinations of motors and reducers. This ensures that the motor and reducer operate within safe and reliable ranges, reducing the risk of equipment overload and damage. Simultaneously, it can also reduce costs and avoid selecting motors and reducers that are too large or too small.

[0079] Reference Figure 5 , Figure 5 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0080] Based on the above Figure 3 In the embodiment shown, step S12, calculating the third peak power of the target motor based on the pre-acquired vehicle parameters, includes: Step S121: The vehicle acceleration time is calculated based on the preset initial vehicle base speed, the preset first peak power of the target motor, and the pre-acquired vehicle parameters.

[0081] Among them, the initial vehicle base speed is set to .

[0082] Among them, the first peak power of the target motor is preset based on experience. .

[0083] Then, calculate the acceleration time according to formulas (1)-(3). : ……………(1) ………………(2) ………………(3) ………………(4) in, For the vehicle speed to be any speed less than the base speed Accelerate to less than or equal to the vehicle's base speed The time used For the vehicle speed to be greater than or equal to Accelerate to less than or equal to the maximum speed Time of use The maximum speed during acceleration. For vehicle speed distribution sequence number, Base speed of the whole vehicle The serial number it belongs to, The rotational mass transfer coefficient is... For the quality of vehicle testing, This represents the motor power; the initial value is a preset value. For mechanical efficiency, For driving resistance, For windward area, This is the drag coefficient. For serial number The corresponding vehicle speed at that time This represents the difference in vehicle speed over time; here, it is the average difference. The maximum speed during acceleration The corresponding serial number, The time taken for the vehicle to accelerate at any speed range is called the vehicle acceleration time.

[0084] Step S122: Evaluate the vehicle acceleration time based on the vehicle acceleration time requirement. If the vehicle acceleration time meets the vehicle acceleration time requirement, calculate the vehicle base speed for climbing based on the maximum gradeability.

[0085] The formula for calculating the vehicle's base speed for climbing based on the maximum gradeability is as follows:

[0086] in, The base speed of the vehicle for climbing the hill. This represents the peak power of the motor. For mechanical efficiency, The power required for the vehicle to climb the steepest hill.

[0087] Step S123: Evaluate the vehicle base speed during the uphill climb and the initial vehicle base speed.

[0088] Step S124: If the vehicle base speed during the climb and the initial vehicle base speed meet the preset acceleration performance requirements, then the first peak power is used as the third peak power.

[0089] Specifically, the preset acceleration performance requirements are as follows: .

[0090] Reference Figure 6 , Figure 6This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0091] Based on the above Figure 5 In the embodiment shown, step S122, evaluating the vehicle acceleration time based on the vehicle acceleration time requirement, and if the vehicle acceleration time meets the requirement, then calculating the vehicle base speed for climbing based on the maximum gradeability includes: Step S1221: Evaluate the vehicle acceleration time based on the first vehicle acceleration time requirement.

[0092] The vehicle acceleration time index is set as t, and the first vehicle acceleration time requirement is... .

[0093] Step S1223: If the vehicle acceleration time meets the first vehicle acceleration time requirement, then the vehicle acceleration time is evaluated based on the second vehicle acceleration time requirement.

[0094] Among them, the second vehicle acceleration time requirement is .

[0095] Step S1225: If the vehicle acceleration time meets the second vehicle acceleration time requirement, then calculate the vehicle base speed for climbing based on the maximum gradeability.

[0096] Reference Figure 7 , Figure 7 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0097] Based on the above Figure 6 In the embodiment shown, step S1221, after evaluating the vehicle acceleration time based on the first vehicle acceleration time requirement, includes: Step S1222: If the vehicle acceleration time does not meet the first vehicle acceleration time requirement, the first peak power is corrected to obtain the second peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the second peak power meets the first vehicle acceleration time requirement.

[0098] If the overall vehicle acceleration time does not meet the first overall vehicle acceleration time requirement. Then, the first peak power is iterated.

[0099] Specifically, set the corrected first peak power. The corrected first peak power is used as the second peak power, and this process continues until the calculated vehicle acceleration time is obtained. It meets the first vehicle acceleration time requirement.

[0100] The acceleration time is calculated based on the second peak power according to step S121. .

[0101] Reference Figure 8 , Figure 8 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0102] Step S1223, if the vehicle acceleration time meets the first vehicle acceleration time requirement, then after evaluating the vehicle acceleration time based on the second vehicle acceleration time requirement, includes: Step S1224: If the vehicle acceleration time does not meet the second vehicle acceleration time requirement, the second peak power is corrected to obtain the third peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

[0103] If the vehicle acceleration time does not meet the second vehicle acceleration time requirement. Then, the second peak power is iterated.

[0104] Specifically, the corrected second peak power is set. The corrected second peak power is used as the third peak power, and this process continues until the calculated vehicle acceleration time is obtained. It meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

[0105] Among them, the acceleration time is calculated according to step S121 based on the third peak power. .

[0106] Currently, the design of automotive electric drive systems does not consider the adjustment and optimization of the vehicle's base speed during the peak power matching process of the motor. This invention addresses these issues by proposing an embodiment.

[0107] Reference Figure 9 , Figure 9 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0108] Based on the above Figure 5-8 In the embodiment shown, step S123, after evaluating the climbing vehicle base speed and the initial vehicle base speed, includes: Step S125: If the climbing vehicle base speed and the initial vehicle base speed do not meet the preset acceleration performance requirements, the initial vehicle base speed is corrected to obtain a second vehicle base speed, until the vehicle acceleration time calculated based on the second vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

[0109] Among them, if Then for the first vehicle base speed After making corrections, the second vehicle base speed is obtained. .

[0110] Then, based on the second vehicle base speed The acceleration time is calculated according to step S121 based on the third peak power. Until the first and second vehicle acceleration time requirements are met.

[0111] The embodiments of the present invention calculate the required vehicle base speed by presetting the vehicle base speed and iterating iteratively.

[0112] Current designs for automotive electric drive systems do not consider energy recovery. This invention addresses this issue by providing embodiments of the present invention.

[0113] Reference Figure 10 , Figure 10 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0114] Based on the above Figure 2 In the embodiment shown, step S40, which involves a comprehensive benefit evaluation of the combination of the motor and the reducer to obtain a combination of motor and reducer that meets preset conditions, includes: Step S41: Perform energy consumption calculation on the combination set of the motor and reducer to obtain the energy consumption set.

[0115] For each combination of motor and reducer, its energy consumption under specific working conditions can be obtained through experiments or theoretical calculations.

[0116] One implementation method is to calculate the combination set of the motor and reducer based on the vehicle network big data operating conditions to obtain the big data operating condition energy consumption set.

[0117] Then, the combination set of the motor and reducer is calculated based on the energy consumption regulatory conditions to obtain the energy consumption set under the regulatory conditions.

[0118] Finally, a weighted energy consumption calculation is performed on the energy consumption set of the big data operating conditions and the energy consumption set of the regulatory operating conditions to obtain the energy consumption set.

[0119] Step S42: Perform cost analysis on the combination set of motors and reducers based on the energy consumption set to obtain the combination of motors and reducers that meets the preset conditions.

[0120] For combinations of motors and reducers, factors such as cost, efficiency, weight, volume, and reliability can be considered individually. By combining vehicle energy consumption data, mathematical models or optimization algorithms can be established to simulate and evaluate different motor and reducer combinations, in order to find the optimal combination that meets preset conditions in terms of both cost and performance.

[0121] This invention, through adding energy recovery and energy consumption verification during the system matching process, aligns with practical application scenarios. Furthermore, by calculating energy consumption, this invention can assess the energy consumption of different motor and reducer combinations, identifying highly energy-efficient combinations and thus reducing the overall vehicle energy consumption. This helps reduce energy consumption, lower operating costs, and minimize environmental impact, aligning with the trend of energy conservation and environmental protection. Moreover, cost analysis based on the energy consumption calculation results can identify the most cost-effective motor and reducer combination under preset conditions, contributing to lower vehicle R&D and production costs, improved production efficiency, enhanced product competitiveness, cost savings, and increased profitability for enterprises.

[0122] Currently, the design of automotive electric drive systems relies too heavily on regulatory operating conditions for matching solutions, failing to fully integrate vehicle network big data. This results in significant differences from actual user scenarios and neglects to consider the impact of mechanical efficiency distribution on system matching. To address these issues, this invention proposes an embodiment.

[0123] Reference Figure 11 , Figure 11 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0124] Based on the above Figure 10 In the embodiment shown, step S41 involves calculating the energy consumption of the combination set of the motor and the reducer to obtain an energy consumption set including: Step S411: Calculate the combination set of the motor and reducer based on the vehicle network big data operating conditions to obtain the big data operating condition energy consumption set.

[0125] Among them, the energy consumption of big data operating conditions is denoted as set .

[0126] Step S412: Calculate the combination set of the motor and reducer based on the energy consumption regulatory conditions to obtain the energy consumption set under the regulatory conditions.

[0127] Among them, the energy consumption under regulatory operating conditions is denoted as a set. .

[0128] Step S413: Perform weighted energy consumption calculation on the big data operating condition energy consumption set and the regulatory operating condition energy consumption set to obtain the energy consumption set.

[0129] Among them, the energy consumption set is The weighted energy consumption calculation formula is as follows:

[0130] in, Weighted energy consumption of the whole vehicle Energy consumption for big data operation Energy consumption under regulatory operating conditions.

[0131] This invention incorporates a mechanical efficiency map (MAP) into the verification process, enabling a more accurate assessment of the motor system's efficiency. It also considers the impact of the mechanical transmission efficiency map on the system. Furthermore, by combining vehicle network big data operating conditions with regulatory operating conditions for weighted verification, this invention fully considers the actual power requirements of users under their operating conditions.

[0132] Reference Figure 12 , Figure 12 This is a flowchart illustrating another exemplary embodiment of the electric drive system matching method of the present invention.

[0133] Based on the above Figure 10 In the embodiment shown, step S42 involves performing a cost analysis on the combination set of motors and reducers based on the energy consumption set, to obtain the combinations of motors and reducers that meet the preset conditions, including: Step S421: Obtain the minimum energy consumption in the energy consumption set.

[0134] Step S422: Perform a cost analysis on the motor and reducer combination corresponding to the minimum energy consumption.

[0135] Step S423: If the cost of the motor and reducer combination corresponding to the minimum energy consumption does not meet the preset standard, then the minimum energy consumption is removed from the energy consumption set, and the step of obtaining the minimum energy consumption in the energy consumption set is executed.

[0136] Step S424: If the cost of the motor and reducer combination corresponding to the minimum energy consumption reaches the preset standard, then the motor and reducer combination corresponding to the minimum energy consumption is taken as the combination of motor and reducer that meets the preset conditions.

[0137] For example: At this time, the minimum weighted energy consumption of the entire vehicle is The corresponding motor + reducer combination is ,right Cost analysis is performed on the motors and reducers in the system. If the cost does not meet the target, then the weighted energy consumption set is considered. Remove from Then find the weighted energy consumption set of the whole vehicle again. The combination of motor and reducer corresponding to the minimum energy consumption is used in a cycle.

[0138] If the cost target is met, the weighted energy consumption set of the entire vehicle will be output directly. The motor + reducer combination corresponding to the minimum energy consumption.

[0139] This invention provides an optimal motor + reducer combination by performing cost analysis on the motor and reducer combination corresponding to the minimum energy consumption.

[0140] Reference Figure 13 , Figure 13 This is a flowchart illustrating the process of obtaining a combination set of motors and reducers in the electric drive system matching method of the present invention.

[0141] S10001, input vehicle parameters to the electric drive system matching device.

[0142] S10002, select the vehicle base speed V1.

[0143] S10003, preset motor peak power .

[0144] S10004, based on vehicle parameters, vehicle base speed V1, and motor peak power. Calculation acceleration time .

[0145] S10005, Set the vehicle acceleration time indicator to t, and determine t3. If this is not met, then the peak power of the motor will be... Perform iterations to make Then execute step S10004 until the calculated result is obtained. .

[0146] S10006, Calculation of vehicle base speed for climbing based on maximum gradeability .

[0147] S10007, determine t3 If this is not met, then the peak power of the motor will be... Perform iterations to make Then execute step S10004 until the calculated result is obtained. and .

[0148] S10008, judgment If it does not meet the requirements, set the base speed V of the entire vehicle. 1= Then execute step S10004 until the calculated result is obtained. and .

[0149] S10009 will ultimately obtain the peak power. Output.

[0150] S10010, Calculate the rated power of the motor based on vehicle parameters .

[0151] S10011, Order .

[0152] S10012, based on the calculated P m The relationship between the output motor torque and the speed ratio curve is calculated, and the speed ratio boundary is determined.

[0153] S10013, combining the correspondence between the speed ratio curve and the peak torque of the motor, and the speed ratio boundary of the reducer, select several motors and several reducers.

[0154] S10014, mark the selected combinations of several motors and several reducers as a set. .

[0155] Reference Figure 14 , Figure 14 This is a flowchart illustrating the comprehensive benefit evaluation of the combination set of motors and reducers in the electric drive system matching method of the present invention, to obtain a combination of motors and reducers that meets preset conditions.

[0156] S10015, Energy Consumption Based on Big Data Operating Conditions Energy consumption under regulatory operating conditions Weighted energy consumption calculation formula This yields the energy consumption set.

[0157] S10016, obtain the minimum energy consumption in the energy consumption set.

[0158] S10017, determine whether the cost of the minimum energy consumption meets the standard.

[0159] S10018 If the minimum energy consumption is not met, remove the minimum energy consumption from the energy consumption set and execute step S10016 until the minimum energy consumption cost obtained meets the standard.

[0160] S10019 outputs the motor and reducer combination corresponding to the minimum energy consumption.

[0161] Furthermore, embodiments of this application also propose an electric drive system matching device, the electric drive system matching device comprising: The power calculation module is used to calculate the target peak power of the target motor based on the pre-acquired vehicle parameters; The component selection module is used to select several motors and several reducers based on the target peak power of the target motor. The permutation and combination module is used to arrange and combine the plurality of motors and the plurality of reducers to obtain a combination set of motors and reducers; The benefit evaluation module is used to perform a comprehensive benefit evaluation on the combination set of motors and reducers to obtain a combination of motors and reducers that meets preset conditions.

[0162] The principle and implementation process of matching the electric drive system in this embodiment are explained in the above embodiments and will not be repeated here.

[0163] Furthermore, this application also proposes an apparatus comprising a memory, a processor, and an electric drive system matching program stored in the memory and executable on the processor. When executed by the processor, the electric drive system matching program implements the steps of the electric drive system matching method as described above.

[0164] Since the matching program of this electric drive system adopts all the technical solutions of all the aforementioned embodiments when it is executed by the processor, it has at least all the beneficial effects brought about by all the technical solutions of all the aforementioned embodiments, which will not be repeated here.

[0165] Furthermore, embodiments of this application also propose a computer-readable storage medium storing an electric drive system matching program, which, when executed by a processor, implements the steps of the electric drive system matching method described above.

[0166] Since the matching program of this electric drive system adopts all the technical solutions of all the aforementioned embodiments when it is executed by the processor, it has at least all the beneficial effects brought about by all the technical solutions of all the aforementioned embodiments, which will not be repeated here.

[0167] This embodiment, through the above-described scheme, specifically calculates the target peak power of the target motor based on pre-acquired vehicle parameters; selects several motors and several reducers based on the target peak power of the target motor; arranges and combines the several motors and several reducers to obtain a set of combinations of motors and reducers; and performs a comprehensive benefit evaluation on the set of combinations of motors and reducers to obtain a combination of motors and reducers that meets preset conditions. This embodiment of the invention selects several motors and several reducers based on the target peak power of the motor and obtains a set of combinations of motors and reducers. It can consider the influence of the reducer speed ratio on the motor selection, and perform a comprehensive benefit evaluation on the set of combinations of motors and reducers. This allows for the evaluation of the merits of motors and reducers from a comprehensive benefit perspective, thereby matching a more reliable electric drive system.

[0168] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or approach 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 approach. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or approach that includes that element.

[0169] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0170] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, controlled terminal, or network device, etc.) to execute the methods of each embodiment of the present invention.

[0171] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A matching method for an electric drive system, characterized in that, The electric drive system includes a motor and a reducer, and the method includes: The target peak power of the target motor is calculated based on pre-acquired vehicle parameters, including: The rated power of the target motor is calculated based on the pre-acquired vehicle parameters; The third peak power of the target motor is calculated based on the pre-acquired vehicle parameters, including: Based on the preset initial vehicle base speed The low-speed acceleration time is calculated in segments based on the preset first peak power of the target motor and the pre-acquired vehicle parameters, with the vehicle's base speed as the dividing line. High-speed acceleration time And integrate them to obtain the vehicle acceleration time; The vehicle acceleration time is evaluated based on the first vehicle acceleration time requirement and the second vehicle acceleration duration requirement. If the vehicle acceleration time meets the vehicle acceleration time requirement, the climbing vehicle base speed is calculated based on the maximum gradeability. ; The vehicle's base speed during the climb and the initial vehicle base speed are evaluated, and acceleration performance requirements are preset. Less than or equal to a preset threshold; If the vehicle base speed during the climb and the initial vehicle base speed meet the acceleration performance requirements, then the first peak power is taken as the third peak power. The target peak power of the target motor is calculated based on the rated power and the third peak power. Select several motors and several reducers based on the target peak power of the target motor; Arrange and combine the plurality of motors and the plurality of reducers to obtain a combination set of motors and reducers; A comprehensive benefit evaluation is performed on the combination of the motor and reducer to obtain a combination of motor and reducer that meets the preset conditions.

2. The method according to claim 1, characterized in that, The step of selecting several motors and several reducers based on the target peak power of the target motor includes: The relationship between the reducer speed ratio and the motor peak torque is obtained based on the target peak power of the target motor. The plurality of motors and the plurality of reducers are selected based on the correspondence between the speed ratio of the reducer and the peak torque of the motor, and the speed ratio boundary of the reducer.

3. The method according to claim 1, characterized in that, The step of evaluating the vehicle acceleration time based on the vehicle acceleration time requirement, and calculating the vehicle base speed based on the maximum gradeability if the vehicle acceleration time meets the vehicle acceleration time requirement, includes: The vehicle acceleration time is evaluated based on the first vehicle acceleration time requirement; If the vehicle acceleration time meets the first vehicle acceleration time requirement, then the vehicle acceleration time is evaluated based on the second vehicle acceleration time requirement; If the vehicle acceleration time meets the second vehicle acceleration time requirement, then the vehicle base speed for climbing is calculated based on the maximum gradeability.

4. The method according to claim 3, characterized in that, Following the step of evaluating the vehicle acceleration time based on the first vehicle acceleration time requirement, the method further includes: If the vehicle acceleration time does not meet the first vehicle acceleration time requirement, the first peak power is corrected to obtain the second peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the second peak power meets the first vehicle acceleration time requirement. The step of evaluating the vehicle acceleration time based on the second vehicle acceleration time requirement is followed by: If the vehicle acceleration time does not meet the second vehicle acceleration time requirement, the second peak power is corrected to obtain a third peak power until the vehicle acceleration time calculated based on the preset initial vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

5. The method according to any one of claims 4, characterized in that, Following the step of evaluating the vehicle's base speed for climbing and the initial vehicle base speed, the method further includes: If the vehicle base speed for climbing and the initial vehicle base speed do not meet the preset acceleration performance requirements, the initial vehicle base speed is corrected to obtain a second vehicle base speed, until the vehicle acceleration time calculated based on the second vehicle base speed and the third peak power meets the first vehicle acceleration time requirement and the second vehicle acceleration time requirement.

6. The method according to claim 1, characterized in that, The step of conducting a comprehensive benefit evaluation of the combination of motors and reducers to obtain a combination of motors and reducers that meets preset conditions includes: Energy consumption calculations are performed on the combination set of the motor and reducer to obtain the energy consumption set; Cost analysis is performed on the combination set of motors and reducers based on the energy consumption set to obtain the combination of motors and reducers that meets the preset conditions.

7. The method according to claim 6, characterized in that, The step of performing energy consumption calculation on the combination set of the motor and the reducer to obtain the energy consumption set includes: Based on the vehicle network big data operating conditions, the combination set of the motor and reducer is calculated to obtain the big data operating condition energy consumption set. The energy consumption set under the regulatory operating conditions is calculated based on the combination set of the motor and reducer; The energy consumption set is obtained by performing a weighted energy consumption calculation on the energy consumption set of the big data operating conditions and the energy consumption set of the regulatory operating conditions.

8. The method according to claim 7, characterized in that, The step of performing cost analysis on the combination set of the motor and the reducer based on the energy consumption calculation results to obtain the combination of motor and reducer that meets the preset conditions includes: Obtain the minimum energy consumption in the energy consumption set; A cost analysis is performed on the motor and reducer combination corresponding to the minimum energy consumption. If the cost of the motor and reducer combination corresponding to the minimum energy consumption does not meet the preset standard, then the minimum energy consumption is removed from the energy consumption set, and the following step is executed: obtain the minimum energy consumption in the energy consumption set; If the cost of the motor and reducer combination corresponding to the minimum energy consumption reaches the preset standard, then the motor and reducer combination corresponding to the minimum energy consumption will be used as the combination of motor and reducer that meets the preset conditions.

9. A matching device for an electric drive system, characterized in that, The device includes: The power calculation module is used to calculate the target peak power of the target motor based on pre-acquired vehicle parameters, including: The rated power of the target motor is calculated based on the pre-acquired vehicle parameters; The third peak power of the target motor is calculated based on the pre-acquired vehicle parameters, including: Based on the preset initial vehicle base speed The low-speed acceleration time is calculated in segments based on the preset first peak power of the target motor and the pre-acquired vehicle parameters, with the vehicle's base speed as the dividing line. High-speed acceleration time And integrate them to obtain the vehicle acceleration time; The vehicle acceleration time is evaluated based on the first vehicle acceleration time requirement and the second vehicle acceleration duration requirement. If the vehicle acceleration time meets the vehicle acceleration time requirement, the climbing vehicle base speed is calculated based on the maximum gradeability. ; The vehicle's base speed during the climb and the initial vehicle base speed are evaluated, and acceleration performance requirements are preset. Less than or equal to a preset threshold; If the vehicle base speed during the climb and the initial vehicle base speed meet the acceleration performance requirements, then the first peak power is taken as the third peak power. The target peak power of the target motor is calculated based on the rated power and the third peak power. The component selection module is used to select several motors and several reducers based on the target peak power of the target motor. The permutation and combination module is used to arrange and combine the plurality of motors and the plurality of reducers to obtain a combination set of motors and reducers; The benefit evaluation module is used to perform a comprehensive benefit evaluation on the combination set of motors and reducers to obtain a combination of motors and reducers that meets preset conditions.

10. A matching device for an electric drive system, characterized in that, The electric drive system matching device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the electric drive system matching method as described in any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the electric drive system matching method as described in any one of claims 1-8.

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