Vehicle carbon reduction effect evaluation method, device and medium

Abstract

The invention discloses a whole vehicle carbon reduction effect evaluation method and device and a medium, and relates to the technical field of new energy automobiles, and the method comprises the steps: collecting first working condition data and second working condition data of a target vehicle; wherein the first working condition data and the second working condition data comprise the rotating speed, the torque, the input voltage and the input current of each sampling point of the first electric driving system and the second electric driving system in the target time; determining first electric driving efficiency and second electric driving efficiency according to the first working condition data and the second working condition data; determining first total energy consumption and second total energy consumption according to the first electric driving efficiency and the second electric driving efficiency on the basis of a constructed whole vehicle energy consumption model; according to the difference value of the first total energy consumption and the second total energy consumption, based on a constructed carbon emission variation model, the carbon emission reduction of the target vehicle under the second electric driving system compared with the carbon emission reduction of the target vehicle under the first electric driving system is calculated; according to the invention, accurate quantification of carbon emission reduction after efficiency improvement is realized.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle technology, and in particular to a method, equipment and medium for evaluating the carbon reduction effect of a vehicle. Background Technology

[0002] While electric vehicles (EVs) offer significant environmental advantages over traditional gasoline-powered vehicles, their overall energy consumption and carbon emissions are still influenced by a complex array of factors. Among these, the efficiency of the electric drive system is a key factor affecting overall vehicle energy consumption and carbon emissions. During EV operation, the energy consumption of the electric drive system is not only related to the efficiency of the motor but is also affected by factors such as transmission system losses and thermal management system energy consumption. Therefore, improving the efficiency of the electric drive system is crucial for enhancing overall vehicle energy efficiency, extending driving range, and reducing carbon emissions.

[0003] Quantifying the impact of improved electric drive system efficiency on overall vehicle carbon emissions remains a major challenge in the field. Traditional carbon emission calculation methods largely rely on laboratory bench test data, estimating the overall vehicle carbon reduction effect by measuring energy consumption and emissions levels under specific operating conditions. However, this method cannot assess the overall vehicle carbon reduction effect resulting from improved electric drive efficiency in electric vehicles. Summary of the Invention

[0004] The purpose of this application is to provide a method, device and medium for evaluating the carbon reduction effect of a vehicle, so as to solve the problem that the existing technology cannot evaluate the carbon reduction effect of electric vehicles caused by the improvement of electric drive efficiency.

[0005] To achieve the above objectives, this application provides the following solution: Firstly, this application provides a method for evaluating the carbon reduction effect of a vehicle, including: Collect first operating condition data and second operating condition data of the target vehicle; wherein, the first operating condition data includes sampling data of the first electric drive system within the target time, the sampling data includes the speed, torque, input voltage and input current of each sampling point, the first electric drive system refers to the electric drive system of the target vehicle before the efficiency improvement, and the second operating condition data includes the sampling data of the second electric drive system within the target time, the second electric drive system refers to the electric drive system of the target vehicle after the efficiency improvement; Based on the first operating condition data and the second operating condition data, the first electric drive efficiency and the second electric drive efficiency are determined; wherein, the first electric drive efficiency refers to the electric drive efficiency of the first electric drive system, and the second electric drive efficiency refers to the electric drive efficiency of the second electric drive system. Based on the constructed vehicle energy consumption model, the first total energy consumption and the second total energy consumption are determined according to the first electric drive efficiency and the second electric drive efficiency; wherein, the first total energy consumption and the second total energy consumption refer to the total energy consumption of the target vehicle when driving the same distance under the drive of the first electric drive system and the second electric drive system. Based on the difference between the first total energy consumption and the second total energy consumption, and using the constructed carbon emission change model, the carbon emission reduction of the target vehicle under the second electric drive system compared to its carbon emission reduction under the first electric drive system is calculated.

[0006] Optionally, determining the first electric drive efficiency and the second electric drive efficiency based on the first operating condition data and the second operating condition data includes: Based on the rotational speed and torque of the first electric drive system and the second electric drive system at each sampling point within the target time, calculate the output mechanical power of the first electric drive system and the second electric drive system at each sampling point, and based on the input voltage and input current of the first electric drive system and the second electric drive system at each sampling point within the target time, calculate the input electric power of the first electric drive system and the second electric drive system at each sampling point. The average output mechanical power of the first electric drive system and the second electric drive system is calculated based on the output mechanical power of the first electric drive system and the second electric drive system at each sampling point, and the average input electric power of the first electric drive system and the second electric drive system is calculated based on the input electric power of the first electric drive system and the second electric drive system at each sampling point. The first electric drive efficiency is calculated using the average output mechanical power and the average input electrical power of the first electric drive system; and the second electric drive efficiency is calculated using the average output mechanical power and the average input electrical power of the second electric drive system.

[0007] Optionally, the determination of the first total energy consumption and the second total energy consumption based on the constructed vehicle energy consumption model, according to the first electric drive efficiency and the second electric drive efficiency, includes: Based on the first electric drive efficiency and the second electric drive efficiency, the first electric drive energy consumption and the second electric drive energy consumption are determined; wherein, the first electric drive energy consumption and the second electric drive energy consumption represent the electric drive energy consumption of the target vehicle when it travels the same distance under the drive of the first electric drive system and the second electric drive system. Based on the vehicle energy consumption model, calculate the first total energy consumption and the second total energy consumption: = + + + ; in, Indicates the first total energy consumption or the second total energy consumption. This indicates the first electric drive energy consumption or the second electric drive energy consumption. This represents the aerodynamic drag energy consumption of the target vehicle. This indicates the energy consumption of the target vehicle's thermal management system. This indicates the energy consumption of the transmission system of the target vehicle.

[0008] Optionally, determining the first electric drive energy consumption and the second electric drive energy consumption based on the first electric drive efficiency and the second electric drive efficiency includes any one of the first method, the second method, and the third method; wherein, the first method includes: Substitute the first electric drive efficiency and the second electric drive efficiency into the electric drive system energy consumption model respectively, and calculate the first electric drive energy consumption and the second electric drive energy consumption: ; in, Indicates the first electric drive energy consumption or the second electric drive energy consumption, if Indicates the first electric drive energy consumption. This indicates the energy consumption of the target vehicle when it travels the target distance. Indicates the first electric drive efficiency; if This indicates the energy consumption of the second electric drive. Indicates the first electric drive energy consumption. Indicates the efficiency of the second electric drive; The second method includes: The energy consumption of the first electric drive system and the energy consumption of the second electric drive system of the target vehicle were calibrated through bench tests of the first electric drive system and the second electric drive system. The third method includes: Based on the simulation models of the first and second electric drive systems, the energy consumption of the first and second electric drive systems is determined through simulation testing.

[0009] Optionally, the method for evaluating the carbon reduction effect of the whole vehicle also includes: Before calculating the first total energy consumption and the second total energy consumption based on the vehicle energy consumption model, the target vehicle is calibrated through bench testing. , E thermal and .

[0010] Optionally, the step of calculating the carbon emission reduction of the target vehicle after improving the electric drive efficiency based on the difference between the first total energy consumption and the second total energy consumption, and based on the constructed carbon emission change model, includes: The difference between the first total energy consumption and the second total energy consumption is taken as... Substituting into the carbon emission change model described in the following formula, the calculated result is... This refers to the reduction in carbon emissions resulting from the improvement in the electric drive efficiency of the target vehicle: ; in, The amount of carbon emission reduction for the target vehicle under different electric drive efficiencies. The energy consumption difference of the target vehicle under different electric drive efficiencies. The carbon emission factor is the location of the target vehicle.

[0011] Optionally, the method for evaluating the carbon reduction effect of the whole vehicle also includes: Based on the first electric drive efficiency, the second electric drive efficiency, and the first driving range, the second driving range is calculated based on the constructed vehicle driving range model; wherein, the first driving range refers to the distance traveled by the target vehicle under the drive of the first electric drive system consuming the target amount of electricity, and the second driving range refers to the distance traveled by the target vehicle under the drive of the second electric drive system consuming the target amount of electricity.

[0012] Optionally, the step of calculating the second driving mileage based on the first electric drive efficiency, the second electric drive efficiency, and the first driving mileage, using a constructed vehicle driving mileage model, includes: Substituting the first electric drive efficiency, the second electric drive efficiency, and the first driving range into the vehicle driving range model described in the following formula, the second driving range is calculated: = ; in, R new Indicates the second mileage. η new Indicates the second electric drive efficiency. η old Indicates the first electric drive efficiency. R old Indicates the first mileage traveled.

[0013] Secondly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the vehicle carbon reduction effect evaluation method described in any one of the above.

[0014] Thirdly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the vehicle carbon reduction effect evaluation method described above.

[0015] According to the specific embodiments provided in this application, the following technical effects are disclosed: This application provides a method, device, and medium for evaluating the carbon reduction effect of a vehicle. It involves collecting first and second operating condition data from the target vehicle. The first operating condition data includes the speed, torque, input voltage, and input current of the first electric drive system at each sampling point within a target time period. The first electric drive system refers to the electric drive system of the target vehicle before the efficiency improvement. The second operating condition data includes the speed, torque, input voltage, and input current of the second electric drive system at each sampling point within the target time period. The second electric drive system refers to the electric drive system of the target vehicle after the efficiency improvement. Compared to laboratory bench test data, the measured first and second operating condition data within the target time period more accurately reflect the electric drive efficiency before and after the improvement. Therefore, based on the first and second operating condition data, the first and second electric drive efficiencies can be determined more accurately. The first electric drive efficiency refers to the electric drive efficiency of the first electric drive system, and the second electric drive efficiency refers to the electric drive efficiency of the second electric drive system, thus realizing the electric drive efficiency of both systems. The system achieves accurate calculations by determining the first total energy consumption and the second total energy consumption based on the constructed vehicle energy consumption model, according to the first electric drive efficiency and the second electric drive efficiency. The first total energy consumption and the second total energy consumption refer to the total energy consumption of the target vehicle traveling the same distance under the drive of the first electric drive system and the second electric drive system. Based on the obtained first electric drive efficiency and the second electric drive efficiency, as well as the constructed vehicle energy consumption model, a more accurate first total energy consumption and the second total energy consumption can be obtained. Furthermore, based on the difference between the first total energy consumption and the second total energy consumption, and using the constructed carbon emission change model, the system calculates the reduction in carbon emissions of the target vehicle under the second electric drive system compared to its performance under the first electric drive system. Based on the difference between the first total energy consumption and the second total energy consumption, as well as the constructed carbon emission change model, a more accurate reduction in carbon emissions after the improvement in electric drive efficiency can be obtained. This achieves accurate quantification of the reduction in carbon emissions after the improvement in electric drive efficiency, solving the problem that existing technologies cannot assess the carbon reduction effect of improved electric drive efficiency in electric vehicles. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A flowchart illustrating a method for evaluating the carbon reduction effect of a vehicle, provided as an embodiment of this application; Figure 2 A functional module diagram of a vehicle carbon reduction effect evaluation device provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In one exemplary embodiment, such as Figure 1 As shown, a method for evaluating the carbon reduction effect of a vehicle is provided, including the following steps 101 to 104. Wherein: Step 101: Collect first operating condition data and second operating condition data of the target vehicle; wherein, the first operating condition data includes the sampling data of the first electric drive system within the target time, and the sampling data includes the speed, torque, input voltage and input current of each sampling point, the first electric drive system refers to the electric drive system of the target vehicle before the efficiency improvement, and the second operating condition data includes the sampling data of the second electric drive system within the target time, the second electric drive system refers to the electric drive system of the target vehicle after the efficiency improvement.

[0020] In this embodiment, the target time is not specifically limited and can be selected according to actual needs. For example, 1800 seconds can be selected as the target time.

[0021] Step 102: Determine the first electric drive efficiency and the second electric drive efficiency based on the first operating condition data and the second operating condition data; wherein, the first electric drive efficiency refers to the electric drive efficiency of the first electric drive system, and the second electric drive efficiency refers to the electric drive efficiency of the second electric drive system.

[0022] Step 103: Based on the constructed vehicle energy consumption model, determine the first total energy consumption and the second total energy consumption according to the first electric drive efficiency and the second electric drive efficiency; wherein, the first total energy consumption and the second total energy consumption refer to the total energy consumption of the target vehicle when driving the same distance under the drive of the first electric drive system and the second electric drive system.

[0023] Step 104: Based on the difference between the first total energy consumption and the second total energy consumption, and using the constructed carbon emission change model, calculate the reduction in carbon emissions of the target vehicle under the second electric drive system compared to under the first electric drive system.

[0024] By implementing steps 101 to 104 above, first operating condition data and second operating condition data of the target vehicle are collected. The first operating condition data includes the speed, torque, input voltage, and input current of the first electric drive system at each sampling point within the target time period. The first electric drive system refers to the electric drive system of the target vehicle before the efficiency improvement. The second operating condition data includes the speed, torque, input voltage, and input current of the second electric drive system at each sampling point within the target time period. The second electric drive system refers to the electric drive system of the target vehicle after the efficiency improvement. Compared to laboratory bench test data, the measured first and second operating condition data within the target time period more accurately reflect the electric drive efficiency before and after the improvement. Therefore, based on the first and second operating condition data, the first and second electric drive efficiencies can be determined more accurately. The first electric drive efficiency refers to the electric drive efficiency of the first electric drive system, and the second electric drive efficiency refers to the electric drive efficiency of the second electric drive system, thus achieving accurate calculation of the electric drive efficiencies of the first and second electric drive systems. The system calculates the first total energy consumption and the second total energy consumption based on a constructed vehicle energy consumption model, according to the first electric drive efficiency and the second electric drive efficiency. The first total energy consumption and the second total energy consumption refer to the total energy consumption of the target vehicle traveling the same distance under the drive of the first electric drive system and the second electric drive system. Based on the obtained first electric drive efficiency and the second electric drive efficiency, as well as the constructed vehicle energy consumption model, a more accurate first total energy consumption and the second total energy consumption can be obtained. Based on the difference between the first total energy consumption and the second total energy consumption, and using a constructed carbon emission change model, the system calculates the reduction in carbon emissions of the target vehicle under the second electric drive system compared to under the first electric drive system. Based on the difference between the first total energy consumption and the second total energy consumption, as well as the constructed carbon emission change model, a more accurate reduction in carbon emissions after the improvement in electric drive efficiency can be obtained. This achieves accurate quantification of the reduction in carbon emissions after the improvement in electric drive efficiency, solving the problem that existing technologies struggle to accurately assess the carbon reduction effect of improved electric drive efficiency in electric vehicles.

[0025] Optionally, in other embodiments of this application, the above-described method for evaluating the carbon reduction effect of the whole vehicle further includes: Before step 102, the collected first and second operating condition data are cleaned and preprocessed to remove abnormal data and use interpolation to fill in missing data, ensuring the accuracy of the data.

[0026] Optionally, in other embodiments of this application, step 102 described above includes steps 201 to 203. Wherein: Step 201: Based on the rotational speed and torque of the first electric drive system and the second electric drive system at each sampling point within the target time, calculate the output mechanical power of the first electric drive system and the second electric drive system at each sampling point, and based on the input voltage and input current of the first electric drive system and the second electric drive system at each sampling point within the target time, calculate the input electric power of the first electric drive system and the second electric drive system at each sampling point.

[0027] Step 202: Calculate the average output mechanical power of the first electric drive system and the second electric drive system based on the output mechanical power of the first electric drive system and the second electric drive system at each sampling point, and calculate the average input electric power of the first electric drive system and the second electric drive system based on the input electric power of the first electric drive system and the second electric drive system at each sampling point.

[0028] Step 203: Calculate the first electric drive efficiency using the average output mechanical power and average input electric power of the first electric drive system; and calculate the second electric drive efficiency using the average output mechanical power and average input electric power of the second electric drive system.

[0029] In this embodiment of the application, the first electric drive efficiency is equal to the average output mechanical power of the first electric drive system divided by its average input electric power, and the second electric drive efficiency is equal to the average output mechanical power of the second electric drive system divided by its average input electric power.

[0030] Optionally, in other embodiments of this application, the target time mentioned above includes a first target time, a second target time, and a third target time. The first target time is the time the target vehicle runs at low speed, the second target time is the time the target vehicle runs at medium speed, and the third target time is the time the target vehicle runs at medium speed.

[0031] In this embodiment, low speed, medium speed, and high speed are not specifically limited and can be set according to actual needs. For example, 0-40 mph is low speed, 41-80 mph is medium speed, and 81-120 mph is high speed.

[0032] Optionally, in other embodiments of this application, step 103 described above includes steps 301 to 302. Wherein: Step 301: Determine the first electric drive energy consumption and the second electric drive energy consumption based on the first electric drive efficiency and the second electric drive efficiency; wherein, the first electric drive energy consumption and the second electric drive energy consumption represent the electric drive energy consumption of the target vehicle when it travels the same distance under the drive of the first electric drive system and the second electric drive system.

[0033] Step 302: Based on the vehicle energy consumption model, calculate the first total energy consumption and the second total energy consumption: = + + + ; in, Indicates the first total energy consumption or the second total energy consumption. This indicates the first electric drive energy consumption or the second electric drive energy consumption. This represents the aerodynamic drag energy consumption of the target vehicle. This indicates the energy consumption of the target vehicle's thermal management system. This indicates the energy consumption of the target vehicle's transmission system.

[0034] Optionally, in other embodiments of this application, step 301 described above includes any one of the first method, the second method, and the third method.

[0035] In this embodiment of the application, the first method described above includes: Substitute the first electric drive efficiency and the second electric drive efficiency into the electric drive system energy consumption model respectively, and calculate the first electric drive energy consumption and the second electric drive energy consumption: ; in, Indicates the first electric drive energy consumption or the second electric drive energy consumption, if Indicates the first electric drive energy consumption. This indicates the energy consumption of the target vehicle when it travels the target distance. Indicates the first electric drive efficiency, if Indicates the energy consumption of the second electric drive. Indicates the first electric drive energy consumption. This indicates the efficiency of the second electric drive.

[0036] The second method mentioned above includes: The energy consumption of the first electric drive system and the energy consumption of the second electric drive system of the target vehicle were calibrated through bench tests.

[0037] The third method mentioned above includes: Based on the simulation models of the first and second electric drive systems, the energy consumption of the first and second electric drive systems was determined through simulation tests.

[0038] Optionally, in other embodiments of this application, the above-described method for evaluating the carbon reduction effect of a vehicle further includes: Prior to step 302, the target vehicle is calibrated through bench testing. , E thermal and .

[0039] Optionally, in other embodiments of this application, step 104 described above includes: Step 401: Use the difference between the first total energy consumption and the second total energy consumption as... Substituting into the carbon emission change model in the following formula, the calculated result is... This refers to the reduction in carbon emissions resulting from the improvement in the electric drive efficiency of the target vehicle: ; in, The amount of carbon emission reduction for the target vehicle under different electric drive efficiencies. The energy consumption difference of the target vehicle under different electric drive efficiencies. The carbon emission factor of the target vehicle's location.

[0040] In the embodiments of this application, The carbon emission factor is determined based on the power generation structure of the local power grid and the power grid structure in different regions. Calculations can be performed to assess the contribution of improved electric drive efficiency to carbon emission reductions in different regions. By introducing grid carbon emission factors for different regions, it is possible to dynamically calculate carbon emission reductions under different global power structures. This allows for adjustments to carbon emission assessment strategies based on local energy structures, supporting global carbon emission policies for new energy vehicles and optimizing energy structures, and contributing to the achievement of global energy conservation and emission reduction goals.

[0041] Optionally, in other embodiments of this application, the above-described method for evaluating the carbon reduction effect of a vehicle further includes: Before step 401, the carbon emission factor is dynamically adjusted according to the changes in the proportion of renewable energy generation in the power grid of different regions, so as to achieve a more accurate calculation of carbon emissions.

[0042] Optionally, in other embodiments of this application, the above-described method for evaluating the carbon reduction effect of a vehicle further includes: Step 501: Based on the first electric drive efficiency, the second electric drive efficiency, and the first driving mileage, calculate the second driving mileage based on the constructed vehicle driving mileage model; wherein, the first driving mileage refers to the mileage traveled by the target vehicle under the drive of the first electric drive system (i.e., under the first electric drive efficiency) by consuming the target electric power, and the second driving mileage refers to the mileage traveled by the target vehicle under the drive of the second electric drive system (i.e., under the second electric drive efficiency) by consuming the target electric power.

[0043] Optionally, in other embodiments of this application, step 501 described above includes: Substituting the first electric drive efficiency, the second electric drive efficiency, and the first driving range into the vehicle driving range model in the following formula, the second driving range is calculated: = ; in, R new Indicates the second mileage. η new Indicates the second electric drive efficiency. η old Indicates the first electric drive efficiency. R old Indicates the first mileage traveled.

[0044] In this embodiment, the method for determining the first driving mileage is not specifically limited and can be selected according to actual needs. For example, the driving process of the target vehicle can be simulated based on input parameters (such as vehicle speed, acceleration, wind resistance, etc.) to obtain the mileage traveled by the target vehicle under the drive of the first electric drive system while consuming the target amount of electricity. For example, the mileage traveled by the target vehicle under the drive of the first electric drive system can be measured by actually driving it. This embodiment can not only calculate the impact of the improvement in electric drive efficiency on the total energy consumption of the target vehicle, but also convert the improvement in electric drive efficiency into a change in the overall vehicle range. Through an accurate vehicle driving mileage model, users can predict the improvement in the overall vehicle range while maintaining the same battery capacity, providing a scientific basis for range planning in actual driving.

[0045] Optionally, in other embodiments of this application, step 501 described above further includes: Considering the impact of other factors (such as total vehicle mass, driver's driving habits, road gradient, etc.) on the vehicle's mileage, the above-mentioned vehicle mileage model is further optimized.

[0046] For example, suppose an electric vehicle has a battery capacity of 100kWh and consumes 70kWh of electricity to travel a fixed distance, meaning its total energy consumption is 70kWh. The electric drive system initially has an efficiency of 90%. After optimization, the electric drive system's efficiency is increased by 5% to 95%, resulting in a 5% decrease in electric drive energy consumption. Based on this efficiency improvement, we can calculate the difference in overall vehicle energy consumption, the increase in driving range, and the corresponding reduction in carbon emissions. Before the efficiency improvement, the electric vehicle's initial electric drive energy consumption was 70kWh × 0.90 = 63kWh. According to bench testing and calibration... For 4kWh, E thermal For 1kWh, The initial energy consumption is 2 kWh. After the improvement in electric drive efficiency, the second electric drive energy consumption of the electric vehicle is 95% of the first electric drive energy consumption, i.e., 63 kWh × 0.95 = 59.85 kWh. Other energy losses remain unchanged, and the second total energy consumption is 66.85 kWh. The difference in energy consumption before and after the improvement in electric drive efficiency, i.e., the difference between the first and second total energy consumption, is 70 kWh - 66.85 kWh = 3.15 kWh. Assuming the carbon emission factor of the local power grid is 0.5 kg CO2 / kWh, the carbon emission reduction after the improvement in electric drive efficiency is 3.15 kWh × 0.5 kg CO2 / kWh = 1.575 kg CO2. In areas with higher carbon emission factors, such as some areas that rely on fossil fuel power generation, the carbon emission factor is 0.8 kg CO2 / kWh, and the reduction in carbon emissions will reach 2.52 kg CO2. As the proportion of renewable energy power generation increases, the carbon emission factor may decrease; therefore, the carbon emission factor is dynamically adjusted to calculate the possible future carbon emission reduction. For example, when the carbon emission factor is reduced to 0.3 kg CO2 / kWh, the reduction in carbon emissions will be 0.945 kg CO2. This would be the driving range of the electric vehicle at a target energy consumption of 70 kWh before the improvement in electric drive efficiency. R old The range is 350km. After the electric drive efficiency is improved, the electric vehicle can travel at a target energy consumption of 70kWh. R new The range is 0.95 / 0.9 × 350km = 369.44km, an increase of 19.44km. The energy consumption per kilometer is reduced after the improvement in electric drive efficiency. Before the efficiency improvement, the energy consumption per kilometer was 0.2kWh / km, and after the efficiency improvement, the energy consumption per kilometer dropped to 0.189kWh / km.

[0047] Optionally, in other embodiments of this application, step 501 described above further includes: The vehicle mileage model was calibrated using experimental test data to ensure that it could accurately predict the vehicle's mileage under different battery capacities and operating conditions.

[0048] In this embodiment, experimental test data is used to calibrate the vehicle mileage model. This involves comparing the experimentally tested range with the theoretically calculated range, and then calibrating to minimize the error between the theoretically calculated and experimentally tested ranges. The specific calibration method is not limited and can be set according to actual needs. For example, a calibration coefficient can be added to the vehicle mileage model.

[0049] Optionally, in other embodiments of this application, the above-described method for evaluating the carbon reduction effect of a vehicle further includes: Based on the first total energy consumption and the first driving mileage, calculate the power consumption per kilometer of the target vehicle under the first electric drive efficiency, and based on the second total energy consumption and the second driving mileage, calculate the power consumption per kilometer of the target vehicle under the second electric drive efficiency, thus obtaining the power consumption per kilometer of the target vehicle before and after the improvement of electric drive efficiency.

[0050] Optionally, in other embodiments of this application, the power consumption per kilometer of the target vehicle before and after the efficiency improvement is calculated according to the following formula: N = ; in, This indicates the energy consumption per kilometer of the target vehicle before or after the improvement in electric drive efficiency. This indicates the first or second mileage.

[0051] Optionally, in other embodiments of this application, the power consumption per kilometer of the target vehicle after efficiency improvement is calculated according to the following formula: = ; in, This indicates the power consumption per kilometer of the target vehicle after the improvement in electric drive efficiency. This indicates the energy consumption per kilometer of the target vehicle before the improvement of electric drive efficiency. Obtained through simulation testing, driving target vehicle testing, or through... N = Calculated.

[0052] Based on the same inventive concept, this application also provides a vehicle carbon reduction effect evaluation device for implementing the above-mentioned vehicle carbon reduction effect evaluation method. The solution provided by this device is similar to the solution described in the above-described method. Therefore, the specific limitations of one or more vehicle carbon reduction effect evaluation device embodiments provided below can be found in the limitations of the vehicle carbon reduction effect evaluation method above, and will not be repeated here.

[0053] In one exemplary embodiment, such as Figure 2 As shown, a vehicle carbon reduction effect evaluation device 60 is provided, comprising: The data acquisition module 601 is used to acquire first operating condition data and second operating condition data of the target vehicle; wherein, the first operating condition data includes the sampling data of the first electric drive system within the target time, and the sampling data includes the speed, torque, input voltage and input current of each sampling point, the first electric drive system refers to the electric drive system of the target vehicle before the efficiency improvement, and the second operating condition data includes the sampling data of the second electric drive system within the target time, the second electric drive system refers to the electric drive system of the target vehicle after the efficiency improvement; The efficiency determination module 602 is used to determine the first electric drive efficiency and the second electric drive efficiency based on the first operating condition data and the second operating condition data; wherein, the first electric drive efficiency refers to the electric drive efficiency of the first electric drive system and the second electric drive efficiency refers to the electric drive efficiency of the second electric drive system. The energy consumption determination module 603 is used to determine the first total energy consumption and the second total energy consumption based on the constructed vehicle energy consumption model and according to the first electric drive efficiency and the second electric drive efficiency; wherein, the first total energy consumption and the second total energy consumption refer to the total energy consumption of the target vehicle when driving the same distance under the drive of the first electric drive system and the second electric drive system. The carbon emission determination module 604 is used to calculate the reduction in carbon emissions of the target vehicle under the second electric drive system compared to under the first electric drive system, based on the difference between the first total energy consumption and the second total energy consumption and the constructed carbon emission change model.

[0054] Optionally, in other embodiments of this application, the above-mentioned vehicle carbon reduction effect evaluation device 60 further includes: The data processing module 605 is used to clean and preprocess the collected first and second operating condition data before determining the first electric drive efficiency and the second electric drive efficiency based on the first operating condition data and the second operating condition data, remove abnormal data and use interpolation to fill in the missing data to ensure the accuracy of the data.

[0055] Optionally, in other embodiments of this application, the efficiency determination module 602 described above is further used for: Based on the rotational speed and torque of the first electric drive system and the second electric drive system at each sampling point within the target time, calculate the output mechanical power of the first electric drive system and the second electric drive system at each sampling point, and based on the input voltage and input current of the first electric drive system and the second electric drive system at each sampling point within the target time, calculate the input electric power of the first electric drive system and the second electric drive system at each sampling point. The average output mechanical power of the first electric drive system and the second electric drive system is calculated based on the output mechanical power of the first electric drive system and the second electric drive system at each sampling point, and the average input electric power of the first electric drive system and the second electric drive system is calculated based on the input electric power of the first electric drive system and the second electric drive system at each sampling point. The efficiency of the first electric drive system is calculated using the average output mechanical power and average input electrical power of the first electric drive system; and the efficiency of the second electric drive system is calculated using the average output mechanical power and average input electrical power of the second electric drive system.

[0056] Optionally, in other embodiments of this application, the energy consumption determination module 603 described above is further used for: Based on the first electric drive efficiency and the second electric drive efficiency, the first electric drive energy consumption and the second electric drive energy consumption are determined; wherein, the first electric drive energy consumption and the second electric drive energy consumption represent the electric drive energy consumption of the target vehicle when it travels the same distance under the drive of the first electric drive system and the second electric drive system. Based on the vehicle energy consumption model, calculate the first total energy consumption and the second total energy consumption: = + + + ; in, Indicates the first total energy consumption or the second total energy consumption. This indicates the first electric drive energy consumption or the second electric drive energy consumption. This represents the aerodynamic drag energy consumption of the target vehicle. This indicates the energy consumption of the target vehicle's thermal management system. This indicates the energy consumption of the target vehicle's transmission system.

[0057] Optionally, in other embodiments of this application, the energy consumption determination module 603 described above is further used for: The first electric drive energy consumption and the second electric drive energy consumption are determined based on the first electric drive efficiency and the second electric drive efficiency, including any one of the first method, the second method and the third method.

[0058] The first method mentioned above includes: Substitute the first electric drive efficiency and the second electric drive efficiency into the electric drive system energy consumption model respectively, and calculate the first electric drive energy consumption and the second electric drive energy consumption: ; in, Indicates the first electric drive energy consumption or the second electric drive energy consumption, if Indicates the first electric drive energy consumption. This indicates the energy consumption of the target vehicle when it travels the target distance. Indicates the first electric drive efficiency, if Indicates the energy consumption of the second electric drive. Indicates the first electric drive energy consumption. This indicates the efficiency of the second electric drive.

[0059] The second method mentioned above includes: The energy consumption of the first electric drive system and the energy consumption of the second electric drive system of the target vehicle were calibrated through bench tests.

[0060] The third method mentioned above includes: Based on the simulation models of the first and second electric drive systems, the energy consumption of the first and second electric drive systems was determined through simulation tests.

[0061] Optionally, in other embodiments of this application, the energy consumption determination module 603 described above is further used for: Before calculating the first and second total energy consumption based on the vehicle energy consumption model, the target vehicle is calibrated through bench testing. , E thermal and .

[0062] Optionally, in other embodiments of this application, the carbon emission determination module 604 described above is further used for: The difference between the first total energy consumption and the second total energy consumption is taken as... Substituting into the carbon emission change model in the following formula, the calculated result is... This refers to the reduction in carbon emissions resulting from the improvement in the electric drive efficiency of the target vehicle: ; in, The amount of carbon emission reduction for the target vehicle under different electric drive efficiencies. The energy consumption difference of the target vehicle under different electric drive efficiencies. The carbon emission factor of the target vehicle's location.

[0063] Optionally, in other embodiments of this application, the above-mentioned vehicle carbon reduction effect evaluation device 60 further includes: Factor adjustment module 606 is used to take the difference between the first total energy consumption and the second total energy consumption as... Substitute into the carbon emission change model to calculate Previously, carbon emission factors were dynamically adjusted based on changes in the proportion of renewable energy generation in the power grids of different regions, thereby achieving more accurate carbon emission calculations.

[0064] Optionally, in other embodiments of this application, the above-mentioned vehicle carbon reduction effect evaluation device 60 further includes: The mileage calculation module 607 is used to calculate the second mileage based on the first electric drive efficiency, the second electric drive efficiency, and the first mileage, and on the constructed vehicle mileage model. The first mileage refers to the distance traveled by the target vehicle under the drive of the first electric drive system while consuming the target amount of electricity, and the second mileage refers to the distance traveled by the target vehicle under the drive of the second electric drive system while consuming the target amount of electricity.

[0065] Optionally, in other embodiments of this application, the mileage calculation module 607 described above is further used for: Substituting the first electric drive efficiency, the second electric drive efficiency, and the first driving range into the vehicle driving range model in the following formula, the second driving range is calculated: = ; in, R new Indicates the second mileage. η new Indicates the second electric drive efficiency. η old Indicates the first electric drive efficiency. R old Indicates the first mileage traveled.

[0066] In this embodiment, the method for determining the first driving mileage is not specifically limited and can be selected according to actual needs. For example, the driving process of the target vehicle can be simulated based on input parameters (such as vehicle speed, acceleration, wind resistance, etc.) to obtain the mileage traveled by the target vehicle under the drive of the first electric drive system by consuming the target amount of electricity. Alternatively, the mileage traveled by the target vehicle under the drive of the first electric drive system can be measured by actually driving it.

[0067] Optionally, in other embodiments of this application, the mileage calculation module 607 described above is further used for: The vehicle mileage model was calibrated using experimental test data to ensure that it could accurately predict the vehicle's mileage under different battery capacities and operating conditions.

[0068] In this embodiment, experimental test data is used to calibrate the vehicle mileage model. This involves comparing the experimentally tested range with the theoretically calculated range, and then calibrating to minimize the error between the theoretically calculated and experimentally tested ranges. The specific calibration method is not limited and can be set according to actual needs. For example, a calibration coefficient can be added to the vehicle mileage model.

[0069] Optionally, in other embodiments of this application, the above-mentioned vehicle carbon reduction effect evaluation device 60 further includes: The single-kilometer power consumption calculation module 608 is used to calculate the power consumption per kilometer of the target vehicle under the first electric drive efficiency based on the first total energy consumption and the first mileage, and to calculate the power consumption per kilometer of the target vehicle under the second electric drive efficiency based on the second total energy consumption and the second mileage, thus obtaining the power consumption per kilometer of the target vehicle before and after the improvement of electric drive efficiency. For details regarding the power consumption per kilometer of the target vehicle before and after the improvement of electric drive efficiency, please refer to the description in the above method embodiment, which will not be repeated here.

[0070] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 3 As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs in the non-volatile storage media. The database stores data on the carbon reduction effect of the entire vehicle. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements a method for evaluating the carbon reduction effect of the entire vehicle.

[0071] Those skilled in the art will understand that Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0072] In one exemplary embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0073] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0074] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0075] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0076] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0077] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for evaluating the carbon reduction effect of a whole vehicle, characterized in that: The vehicle carbon reduction effect evaluation method includes: Collecting first operating condition data and second operating condition data of a target vehicle; wherein the first operating condition data includes sampled data of a first electric drive system within a target time, the sampled data includes the speed, torque, input voltage and input current of each sampling point, the first electric drive system refers to the electric drive system of the target vehicle before efficiency improvement, the second operating condition data includes the sampled data of a second electric drive system within a target time, and the second electric drive system refers to the electric drive system of the target vehicle after efficiency improvement; Determine a first electric drive efficiency and a second electric drive efficiency according to the first operating condition data and the second operating condition data; wherein the first electric drive efficiency refers to the electric drive efficiency of the first electric drive system, and the second electric drive efficiency refers to the electric drive efficiency of the second electric drive system; Based on the constructed vehicle energy consumption model, determining a first total energy consumption and a second total energy consumption according to the first electric drive efficiency and the second electric drive efficiency; wherein the first total energy consumption and the second total energy consumption refer to the total energy consumption of the target vehicle corresponding to the same mileage driven by the first electric drive system and the second electric drive system; According to the difference between the first total energy consumption and the second total energy consumption and based on the constructed carbon emission change model, the carbon emission reduction of the target vehicle when driven by the second electric drive system compared to when driven by the first electric drive system is calculated.

2. The vehicle carbon reduction effect evaluation method according to claim 1 is characterized in that: The determining the first electric drive efficiency and the second electric drive efficiency according to the first operating condition data and the second operating condition data includes: Calculate the output mechanical power of the first electric drive system and the second electric drive system at each sampling point according to the rotation speed and torque of the first electric drive system and the second electric drive system at each sampling point within the target time, and calculate the input electric power of the first electric drive system and the second electric drive system at each sampling point according to the input voltage and input current of the first electric drive system and the second electric drive system at each sampling point within the target time; Calculate the average output mechanical power of the first electric drive system and the second electric drive system according to the output mechanical power of the first electric drive system and the second electric drive system at each sampling point, and calculate the average input electric power of the first electric drive system and the second electric drive system according to the input electric power of the first electric drive system and the second electric drive system at each sampling point; The first electric drive efficiency is calculated by the average output mechanical power and the average input electric power of the first electric drive system; and the second electric drive efficiency is calculated by the average output mechanical power and the average input electric power of the second electric drive system.

3. The vehicle carbon reduction effect evaluation method according to claim 1 is characterized in that: The first total energy consumption and the second total energy consumption are determined based on the constructed vehicle energy consumption model according to the first electric drive efficiency and the second electric drive efficiency, including: Determine a first electric drive energy consumption and a second electric drive energy consumption according to the first electric drive efficiency and the second electric drive efficiency; wherein the first electric drive energy consumption and the second electric drive energy consumption represent the electric drive energy consumption of the target vehicle when driven by the first electric drive system and the second electric drive system to travel the same mileage; Based on the vehicle energy consumption model, the first total energy consumption and the second total energy consumption are calculated: = + + + ； in, represents the first total energy consumption or the second total energy consumption, represents the first electric drive energy consumption or the second electric drive energy consumption, represents the aerodynamic drag energy consumption of the target vehicle, represents the energy consumption of the thermal management system of the target vehicle, Represents the powertrain energy consumption of the target vehicle.

4. The vehicle carbon reduction effect evaluation method according to claim 3 is characterized in that: The determining of the first electric drive energy consumption and the second electric drive energy consumption according to the first electric drive efficiency and the second electric drive efficiency includes any one of the first method, the second method and the third method; wherein the first method includes: Substitute the first electric drive efficiency and the second electric drive efficiency into the electric drive system energy consumption model respectively to calculate the first electric drive energy consumption and the second electric drive energy consumption: ； in, represents the first electric drive energy consumption or the second electric drive energy consumption, if represents the first electric drive energy consumption, Indicates the energy consumption of the target vehicle to travel the target mileage, represents the first electric drive efficiency; if represents the second electric drive energy consumption, represents the first electric drive energy consumption, represents the second electric drive efficiency; The second method comprises: Calibrate the first electric drive energy consumption and the second electric drive energy consumption by bench testing the first electric drive system and the second electric drive system of the target vehicle; The third method comprises: Based on the constructed simulation models of the first electric drive system and the second electric drive system, the first electric drive energy consumption and the second electric drive energy consumption are determined through simulation tests.

5. The vehicle carbon reduction effect evaluation method according to claim 3 is characterized in that: Also includes: Before calculating the first total energy consumption and the second total energy consumption based on the vehicle energy consumption model, the bench test of the target vehicle is calibrated. , E thermal and .

6. The vehicle carbon reduction effect evaluation method according to claim 1 is characterized in that: The calculating, based on the difference between the first total energy consumption and the second total energy consumption and based on the constructed carbon emission change model, the carbon emission reduction amount after the electric drive efficiency of the target vehicle is improved includes: The difference between the first total energy consumption and the second total energy consumption is taken as Substituting into the carbon emission change model described in the following formula, the calculated That is, the carbon emission reduction after the electric drive efficiency of the target vehicle is improved: ； in, is the carbon emission reduction of the target vehicle at different electric drive efficiencies, is the energy consumption difference of the target vehicle under different electric drive efficiencies, is the carbon emission factor of the location of the target vehicle.

7. The vehicle carbon reduction effect evaluation method according to claim 1 is characterized in that: Also includes: According to the first electric drive efficiency, the second electric drive efficiency and the first mileage, based on the constructed vehicle mileage model, the second mileage is calculated; wherein, the first mileage refers to the mileage of the target vehicle driven by the first electric drive system while consuming the target power, and the second mileage refers to the mileage of the target vehicle driven by the second electric drive system while consuming the target power.

8. The vehicle carbon reduction effect evaluation method according to claim 7 is characterized in that: The calculating the second mileage according to the first electric drive efficiency, the second electric drive efficiency and the first mileage based on the constructed vehicle mileage model includes: Substitute the first electric drive efficiency, the second electric drive efficiency and the first mileage into the vehicle mileage model described in the following formula to calculate the second mileage: = ； in, R new Indicates the second mileage, η new represents the second electric drive efficiency, η old represents the first electric drive efficiency, R old Indicates the first mileage.

9. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the vehicle carbon reduction effect evaluation method described in any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the vehicle carbon reduction effect evaluation method described in any one of claims 1-8 are implemented.

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