Pure electricity utilization coefficient construction method and device based on energy transmission and electronic equipment

Abstract

The invention relates to the technical field of traffic transportation, in particular to a pure electricity utilization coefficient construction method and device based on energy transmission and electronic device.The method comprises the steps that effective travel information is divided into a plurality of travels with the endurance mileage label of a hybrid power vehicle as the reference; calculating a motor driving energy proportion of each stroke according to the transient parameter information corresponding to each stroke, and performing weighted average on the motor driving energy proportion of each stroke under each endurance mileage label to obtain a comprehensive motor driving energy proportion corresponding to each endurance mileage label; and fitting the comprehensive motor driving energy ratio corresponding to each endurance mileage label to obtain a pure electricity utilization coefficient of the hybrid vehicle. Therefore, the problems that the calculation result is not accurate enough and the electric energy contribution rate in the vehicle using process of the user cannot be truly reflected due to the fact that the fuel participation situation possibly occurring in actual operation is ignored in the mode of calculating the pure electricity utilization coefficient based on the mileage proportion in the related technology are solved.

Description

Technical Field

[0001] The present invention relates to the field of transportation technology, and in particular to a method, device and electronic equipment for constructing a pure electric utilization coefficient based on energy transmission. Background Art

[0002] As the global demand for energy conservation and emission reduction grows, hybrid vehicles have attracted widespread attention due to their ability to reduce tail gas emissions and improve fuel economy. For such vehicles, it is crucial to accurately assess their electric energy usage, and the pure electric utilization factor is an important indicator.

[0003] The pure electric utilization coefficient in the relevant technology is calculated by counting the daily travel mileage of residents or the travel chain mileage between two charges, and from the perspective of mileage ratio, that is, the ratio of the mileage in the power consumption mode to the total mileage. However, the relevant technology fails to fully take into account the complex working conditions that may exist in the actual driving process. For example, when the actual power is sufficient but the power demand is large, the system may start the internal combustion engine to meet the additional power demand or charge the battery pack. In this case, although the vehicle is still in the so-called "power consumption mode", fuel has actually been introduced as additional energy input. Therefore, the method based on mileage ratio in the relevant technology may cause the calculated pure electric utilization coefficient to be too high, and it cannot truly reflect the contribution rate of electric energy during the user's use of the vehicle. Summary of the invention

[0004] The present invention provides a method, device and electronic device for constructing a pure electric utilization coefficient based on energy transmission, so as to solve the problem that the method of calculating the pure electric utilization coefficient based on mileage ratio in the related art ignores the fuel participation that may occur in actual operation, resulting in the calculation result being not accurate enough and unable to truly reflect the electric energy contribution rate during the user's use of the vehicle.

[0005] The first aspect of the present invention provides a method for constructing a pure electric utilization coefficient based on energy transmission, comprising the following steps: dividing the effective trip information into multiple trips with reference to the range tag of the hybrid vehicle, and constructing a trip data set in the time sequence of the multiple trips, wherein the trip data set includes multiple trips and transient parameter information corresponding to each trip; calculating the motor drive energy ratio of each trip according to the transient parameter information corresponding to each trip, and performing weighted averaging on the motor drive energy ratio of each trip under each range tag to obtain the comprehensive motor drive energy ratio corresponding to each range tag; and fitting the comprehensive motor drive energy ratio corresponding to each range tag to obtain the pure electric utilization coefficient of the hybrid vehicle.

[0006] Optionally, the motor drive energy ratio of each stroke is calculated according to the transient parameter information corresponding to each stroke, including: calculating the motor output energy and the engine output energy respectively according to the transient parameter information corresponding to each stroke; calculating the motor drive energy ratio corresponding to each stroke according to the motor output energy and the engine output energy.

[0007] Optionally, the calculation formula for the motor drive energy ratio is:

[0008] in, For label Next The total duration of the trip, Represents the transmission efficiency between the power battery and the motor. Represents the thermal efficiency of the engine, express The instantaneous output power of the motor at this moment, express The instantaneous output power of the engine at the moment.

[0009] Optionally, a weighted average is taken of the motor-driven energy ratio of each trip under each cruising range label to obtain a comprehensive motor-driven energy ratio corresponding to each cruising range label, including: calculating the weight value of each trip under each cruising range label respectively; calculating the energy flow transmission conversion ratio of each trip under each cruising range label according to the weight value of each trip under each cruising range label and the motor-driven energy ratio corresponding to each trip; and averaging the energy flow transmission conversion ratio of each trip to obtain a comprehensive motor-driven energy ratio corresponding to each cruising range label.

[0010] Optionally, the weight value of each trip is calculated as:

[0011] in, Indicates The weight of the trip, Indicates The mileage of the trip.

[0012] Optionally, if the increase in the SOC battery state of charge of the hybrid vehicle from one power-off to another power-on exceeds a preset value, it is determined as one charge, and the period between two charges is one trip.

[0013] Optionally, the comprehensive motor drive energy ratio corresponding to each cruising range label is fitted to obtain the pure electric utilization coefficient of the hybrid vehicle, including: using an exponential polynomial with constraints to fit the comprehensive motor drive energy ratio corresponding to each cruising range label; and generating the pure electric utilization coefficient of the hybrid vehicle based on the fitting results.

[0014] The second aspect of the present invention provides a device for constructing a pure electric utilization coefficient based on energy transmission, including: a division module, which is used to divide the effective trip information into multiple trips with the cruising range label of the hybrid vehicle as a reference, and construct a trip data set in the time sequence of the multiple trips, wherein the trip data set includes multiple trips and transient parameter information corresponding to each trip; a calculation module, which is used to calculate the motor drive energy ratio of each trip according to the transient parameter information corresponding to each trip, and perform weighted averaging on the motor drive energy ratio of each trip under each cruising range label to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label; a fitting module, which is used to fit the comprehensive motor drive energy ratio corresponding to each cruising range label to obtain the pure electric utilization coefficient of the hybrid vehicle.

[0015] Optionally, the calculation module is further used to calculate the motor output energy and the engine output energy respectively according to the transient parameter information corresponding to each stroke; and calculate the motor drive energy ratio corresponding to each stroke according to the motor output energy and the engine output energy.

[0016] Optionally, the calculation formula for the motor drive energy ratio is:

[0017] in, For label Next The total duration of the trip, Represents the transmission efficiency between the power battery and the motor. Represents the thermal efficiency of the engine, express The instantaneous output power of the motor at this moment, express The instantaneous output power of the engine at the moment.

[0018] Optionally, the calculation module is further used to: calculate the weight value of each trip under each cruising range label respectively; calculate the energy flow transmission conversion ratio of each trip under each cruising range label according to the weight value of each trip under each cruising range label and the motor drive energy ratio corresponding to each trip; and average the energy flow transmission conversion ratio of each trip to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label.

[0019] Optionally, the weight value of each trip is calculated as:

[0020] in, Indicates The weight of the trip, Indicates The mileage of the trip.

[0021] Optionally, if the increase in the SOC battery state of charge of the hybrid vehicle from one power-off to another power-on exceeds a preset value, it is determined as one charge, and the period between two charges is one trip.

[0022] Optionally, the fitting module is further used to fit the comprehensive motor drive energy ratio corresponding to each cruising range label using an exponential polynomial with constraints; and generate a pure electric utilization coefficient of the hybrid vehicle based on the fitting result.

[0023] The third aspect of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement a method for constructing a pure electric utilization coefficient based on energy transmission as in the above embodiment.

[0024] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program or instruction stored thereon. When the computer program or instruction is executed, it is used to implement a method for constructing a pure electric utilization coefficient based on energy transmission as in the above-mentioned embodiment.

[0025] Therefore, the present invention has at least the following beneficial effects: The embodiment of the present invention divides the trip data of the hybrid vehicle so that each trip can be analyzed separately, thereby achieving refined management of vehicle performance. From the perspective of the energy flow transmission of the entire vehicle, the corresponding motor drive energy ratio is calculated in combination with the transient parameter data associated with each trip, and the motor drive energy ratio of each trip under each cruising range label is weighted averaged to obtain the pure electric utilization coefficient of the hybrid vehicle, so that the calculation result is closer to the actual situation and more accurately reflects the power usage of the hybrid vehicle in actual driving.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 A flowchart of a method for constructing a pure electricity utilization coefficient based on energy transmission according to an embodiment of the present invention; Figure 2 An example diagram of energy transmission provided according to an embodiment of the present invention; Figure 3An example diagram of a method for constructing a pure electricity utilization coefficient for energy flow transmission and conversion according to an embodiment of the present invention; Figure 4 An example diagram of travel division and motor drive energy ratio calculation according to an embodiment of the present invention; Figure 5 An example diagram of the motor drive energy ratio for each trip under each cruising range tag provided according to an embodiment of the present invention; Figure 6 An example diagram of the comprehensive motor drive energy ratio corresponding to each cruising range label provided according to an embodiment of the present invention; Figure 7 A curve diagram of the endurance tag mileage and the pure electricity utilization coefficient provided according to an embodiment of the present invention; Figure 8 A block diagram of a device for constructing a pure electric utilization coefficient based on energy transmission according to an embodiment of the present invention; Fig. 9 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following describes the method, device and electronic device for constructing a pure electric utilization coefficient based on energy transmission of an embodiment of the present invention with reference to the accompanying drawings. In response to the problems mentioned in the above background technology, the present invention provides a method for constructing a pure electric utilization coefficient. In this method, the trip data of a hybrid vehicle is divided so that each trip can be analyzed separately, thereby realizing refined management of vehicle performance, and starting from the perspective of energy flow transmission of the entire vehicle, the corresponding motor drive energy ratio is calculated in combination with the transient parameter data associated with each trip, and the motor drive energy ratio of each trip under each cruising range label is weighted averaged to obtain the pure electric utilization coefficient of the hybrid vehicle, so that the calculation result is closer to the actual situation and more accurately reflects the electric energy usage of the hybrid vehicle in actual driving. As a result, the method of calculating the pure electric utilization coefficient based on the mileage ratio in the related technology is solved, which ignores the fuel participation that may occur in actual operation, resulting in the calculation result being not accurate enough and unable to truly reflect the electric energy contribution rate during the user's use of the vehicle.

[0030] Specifically, Figure 1A schematic flow chart of a method for constructing a pure electricity utilization coefficient based on energy transmission provided in an embodiment of the present invention.

[0031] like Figure 1 As shown, the method for constructing the pure electric utilization coefficient based on energy transmission includes the following steps: In step S101, the effective trip information is divided into multiple trips with reference to the cruising range tag of the hybrid vehicle, and a trip data set is constructed according to the time sequence of the multiple trips, wherein the trip data set includes multiple trips and transient parameter information corresponding to each trip.

[0032] Among them, the cruising range label indicates the pure electric cruising range of the hybrid vehicle, and the transient parameter information includes cumulative mileage, motor torque, motor speed, engine torque, engine speed, SOC, etc.; the effective trip information is the trip information when the trip mileage is greater than the preset value, where the preset value can be set to 1km.

[0033] The embodiment of the present invention can collect driving data from hybrid vehicles with different mileage tag values. The embodiment of the present invention can use an on-board diagnostic system or other monitoring device to record various transient parameter information and travel information of the hybrid vehicle in actual use.

[0034] Furthermore, the embodiment of the present invention divides the trips reasonably and establishes a connection between the obtained transient parameters and each trip. Specifically, a charging event is used as the dividing point of the trip. If the SOC increase value of the vehicle from one power failure to another power-on exceeds a preset threshold (such as 10%), a charge is determined, and the period between two charges is a complete trip. Based on this definition, the difference between each trip and the accumulated mileage at the end of the previous trip is calculated to determine the actual mileage R of this trip. Trips with a mileage of less than 1 km are deleted. Therefore, the embodiment of the present invention obtains valid trip information by removing those short trips that do not meet the conditions to ensure the accuracy of subsequent calculation results.

[0035] Furthermore, based on the valid trip information obtained in the above embodiment, the embodiment of the present invention can use the endurance tag i of the hybrid vehicle as the basic unit, divide the valid trip information into multiple trips, and construct a trip data set for all the trips of the hybrid vehicle in chronological order. , where the trip data set contains multiple trips and all associated transient parameter information in each trip (such as motor output power, engine output power, SOC change, etc.).

[0036] In step S102, the motor drive energy ratio of each trip is calculated according to the transient parameter information corresponding to each trip, and the motor drive energy ratio of each trip under each cruising range label is weighted averaged to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label.

[0037] It can be understood that the embodiment of the present invention calculates the motor drive energy ratio of each stroke according to the transient parameter information corresponding to each stroke, fully considering the engine thermal efficiency and the energy transmission efficiency from the battery to the motor, and can more accurately reflect the vehicle's energy utilization efficiency under actual driving conditions. It avoids the problem of a high pure electric utilization coefficient calculated in traditional methods due to ignoring the fact that the internal combustion engine is started when the actual power is sufficient but the power demand is large.

[0038] In one embodiment of the present invention, the motor drive energy ratio of each stroke is calculated according to the transient parameter information corresponding to each stroke, including: calculating the motor output energy and the engine output energy respectively according to the transient parameter information corresponding to each stroke; calculating the motor drive energy ratio corresponding to each stroke according to the motor output energy and the engine output energy.

[0039] Specifically, hybrid vehicles use engines and power batteries as energy sources. Transient parameter information can only obtain the energy transmitted to the end of the energy flow. However, the embodiment of the present invention needs to calculate the energy provided by the front-end source, so it is necessary to consider the transmission efficiency of each, such as Figure 2 As shown in Figure 1, the front-end energy provided by the engine is the engine output power divided by the engine thermal efficiency. The front-end energy provided by the battery is the motor output power divided by the power transfer efficiency from the battery to the motor.

[0040] In the embodiment of the present invention, EMDR (Electric Motor Drive Ratio) can be used to represent the ratio of the energy output by the motor in a single trip to the energy provided by the engine and the power battery. The calculation formula is:

[0041] in, For label Next The total duration of the trip, Represents the transmission efficiency between the power battery and the motor. Represents the thermal efficiency of the engine, express The instantaneous output power of the motor at this moment, express The instantaneous output power of the engine at the moment.

[0042] Among them, for each time point in each trip , using instantaneous motor torque and instantaneous motor speed To calculate the instantaneous output power of the motor :

[0043] Among them, for each time point in each trip , using instantaneous engine torque and instantaneous engine speed To calculate the instantaneous engine power output :

[0044] Where: express The instantaneous torque of the motor at the moment, express The instantaneous torque of the engine at the moment; express The instantaneous speed of the motor at the moment, express The instantaneous engine speed at the moment.

[0045] In one embodiment of the present invention, a weighted average is performed on the motor drive energy ratio of each trip under each cruising range label to obtain a comprehensive motor drive energy ratio corresponding to each cruising range label, including: calculating the weight value of each trip under each cruising range label respectively; calculating the energy flow transmission conversion ratio of each trip under each cruising range label according to the weight value of each trip under each cruising range label and the motor drive energy ratio corresponding to each trip; and averaging the energy flow transmission conversion ratio of each trip to obtain a comprehensive motor drive energy ratio corresponding to each cruising range label.

[0046] In the embodiment of the present invention, there are multiple trips under the same rated cruising range label, so the same cruising range label corresponds to multiple motor drive energy ratios. The comprehensive motor drive ratio of all strokes, in theory, should be given a separate weight to the motor drive energy ratio of each stroke.

[0047] In the motor drive energy ratio calculation, each trip is divided based on charging, and each charging behavior is equal. This means that no matter how long the trip is, each charging is considered equally important. However, from the perspective of energy efficiency, the longer the trip, the lower the mileage benefit obtained from this charging. Therefore, in the embodiment of the present invention, the trip is divided based on charging, and each charging behavior is equal. This means that no matter how long the trip is, each charging behavior is considered equally important. However, from the perspective of energy efficiency, the longer the trip, the lower the mileage benefit obtained from this charging. The weight of should be inversely proportional to the mileage, that is, the longer the mileage, the smaller its weight. Such a weight distribution can more accurately reflect the contribution of different trips to the overall energy efficiency, thereby optimizing the calculation of the motor drive energy ratio.

[0048] Calculate the mileage of each trip in a hybrid vehicle The inverse of The weight of each trip is calculated as follows. The sum of the weights of all trips is 1.

[0049]

[0050] in, Indicates The weight of the trip, Indicates The mileage of the trip.

[0051] Furthermore, the embodiment of the present invention calculates the energy flow transmission conversion ratio of each trip under each cruising range label according to the weight value of each trip under each cruising range label and the motor drive energy ratio corresponding to each trip, and the formula is: .

[0052] Finally, in order to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label, the embodiment of the present invention needs to average the energy flow transmission conversion ratio of all trips under the same label to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label. , which can accurately reflect the efficiency of electric energy usage in actual driving of vehicles under different mileage labels. The formula is as follows:

[0053] In step S103, the comprehensive motor drive energy ratio corresponding to each cruising range tag is fitted to obtain the pure electric utilization coefficient of the hybrid vehicle.

[0054] In some embodiments, the comprehensive motor drive energy ratio corresponding to each cruising range label is fitted to obtain the pure electric utilization coefficient of the hybrid vehicle, including: fitting the comprehensive motor drive energy ratio corresponding to each cruising range label using an exponential polynomial with constraints; and generating the pure electric utilization coefficient of the hybrid vehicle based on the fitting results.

[0055] It is understandable that the embodiment of the present invention can select a constrained exponential polynomial as the fitting function. The function needs to meet the following two main constraints: Constraint 1: The expression of the exponential polynomial is:

[0056] Among them, the fitting parameters that need to be determined include , , No more than 10.

[0057] Constraint 2: The curve corresponding to the expression of the fitted exponential polynomial is required to maintain a monotonically increasing property in the entire definition domain, and when =0, =0; = hour, =1.

[0058] The embodiment of the present invention determines the pure electric utilization coefficient under any cruising range label by fitting the comprehensive motor drive energy ratio corresponding to each cruising range label through the above-mentioned constrained exponential polynomial. Thus, the actual electric energy usage of the vehicle during driving is accurately described from the perspective of energy, providing a new perspective for the energy efficiency evaluation of hybrid vehicles.

[0059] According to the method for constructing the pure electric utilization coefficient based on energy transmission proposed in the embodiment of the present invention, the trip data of the hybrid vehicle is divided so that each trip can be analyzed separately, thereby realizing the refined management of the vehicle performance, and starting from the perspective of the energy flow transmission of the whole vehicle, the corresponding motor drive energy ratio is calculated in combination with the transient parameter data associated with each trip, and the motor drive energy ratio of each trip under each cruising range label is weighted averaged to obtain the pure electric utilization coefficient of the hybrid vehicle, so that the calculation result is closer to the actual situation and more accurately reflects the electric energy usage of the hybrid vehicle in actual driving. Therefore, the method of calculating the pure electric utilization coefficient based on the mileage ratio in the related technology is solved, which ignores the fuel participation that may occur in actual operation, resulting in the calculation result being not accurate enough and unable to truly reflect the electric energy contribution rate during the user's use of the vehicle.

[0060] In summary, the embodiment of the present invention proposes a new method for calculating the pure electric utilization coefficient from the perspective of energy during the energy flow transmission of the entire vehicle, that is, the ratio of the electric energy output by the motor to the total energy output of the engine and the battery. It aims to accurately describe the actual energy usage of the vehicle during driving from a new perspective. This method not only enriches the current calculation methods of the pure electric utilization coefficient, but also provides a new perspective for the energy efficiency evaluation of hybrid vehicles, and promotes technological innovation and development. The following is a detailed description of the method for constructing the pure electric utilization coefficient based on energy transmission of the embodiment of the present invention with a specific example. Figure 3 As shown, the details are as follows: Step 1: The vehicle-mounted device monitors and records the usage data of the actual vehicle user, including the cumulative mileage, motor torque, motor speed, engine torque, engine speed, SOC and other transient parameters. Specifically, the embodiment of the present invention randomly selects 300 hybrid vehicles with a rated range label value of 48~235km, including sedans, SUVs and MPV models, and the range label value i includes 48, 55, 120, and 235 respectively, and monitors and records the usage data of the actual vehicle user through the vehicle-mounted device, including the cumulative mileage, motor torque, motor speed, engine torque, engine speed, SOC and other transient parameters. Part of the data of trip 1 is shown in Table 1 below.

[0061] Table 1

[0062] Step 2: Trip division. If the SOC increase from one power failure to the next power failure is more than 10, it is determined as one charge, and the period between two charges is one trip. Based on this definition, Figure 4 As shown in the figure, the difference between each trip and the accumulated mileage at the end of the previous trip is calculated to determine the actual mileage R of this trip. Trips with mileage less than 1 km are deleted. In the example, the mileage of trip 1 is 34 km. A total of 7964 trips are obtained. Based on the valid trip information obtained, four trip data sets are constructed in chronological order, taking the endurance mileage label value i as the basic unit. , , , , Including 252 trips, Including 756 trips, Including 6427 trips, It includes 529 trips, each of which contains all transient parameter information and the accumulated mileage of the trip.

[0063] Step 3: Calculate the motor drive energy ratio for each stroke by using the motor output power and the engine output power, and taking into account the engine thermal efficiency and energy transmission efficiency, such as Figure 5 The calculation formula for the multiple scattered points shown is:

[0064] Represents the transmission efficiency from the power battery output to the motor output, with an average value of 0.8; Represents the engine thermal efficiency, with an average value of 0.4.

[0065] Tag value =48 of 252 trips =[1,0.8,0.7,0.5,...,1]; Tag value =55 of 756 trips =[0.7,0.9,0.3,0.4,...,1]; Tag value =120 of 6427 trips =[1,1,1,0.3,...,0.9]; Tag value =235 of 529 trips =[1,1,1,0.5,...,0.3].

[0066] Calculate each label Each trip mileage The inverse of and normalize it.

[0067] Tag value =48 weights of 252 trips, =[0.00381921,0.00373562,0.00367253,0.00369563,..., 0.00381465], the sum of all values ​​is 1; Tag value =55 weight of 756 trips =[0.00133456,0.00136487, 0.00103209,0.00113633 ,..., 00139343], the sum of all values ​​is 1; Tag value =120 weight of 6427 trips =[0.000153343,0.000159241,0.000159987, 0.000138574,...,0.000158764], the sum of all values ​​is 1; Tag value =235 weight of 529 trips =[0.0018903,0.0019544, 0.0017364,0.00125433, ...,0.00088463], the sum of all values ​​is 1; Step 4: Obtain the comprehensive motor drive energy ratio corresponding to each mileage label by taking a weighted average of the motor drive energy ratio of each trip under each mileage label. ,like Figure 6 shown.

[0068] Calculate the label value =48 of the overall motor drive energy ratio is 0.3701, Calculate the label value =55 of the overall motor drive energy ratio is 0.4070, Calculate the label value =120 comprehensive motor drive energy ratio is 0.6279, Calculate the label value =235 comprehensive motor drive energy ratio It is 0.7867.

[0069] Step 5: Obtain the pure electric endurance label and the comprehensive motor drive energy ratio distribution, and obtain the general expression of the pure electric utilization coefficient curve through constrained exponential fitting. Specifically, the embodiment of the present invention can fit each label through a constrained exponential polynomial based on the comprehensive motor drive energy ratio distribution. The ratio of the overall motor drive energy , for laboratory test result calculations.

[0070] The following two constraints should be met: Constraint 1: The structure of the curve expression is: .

[0071] The fitting parameters that need to be determined include , , No more than 10.

[0072] Constraint 2: The fitted curve is required to maintain a monotonically increasing property in the entire definition domain, and when =0, =0; = hour, =1.

[0073] Therefore, the embodiment of the present invention can calculate the fitting parameters by combining the above data to obtain is 1500, is 15, is -14, is -636, is 5954, is -25101, is 60379, is -87515, is 75517, is -35744, is 7160, and then we can get the target curve of cruising range and pure electric utilization coefficient, such as Figure 7 shown.

[0074] Next, a device for constructing a pure electric utilization coefficient based on energy transmission according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0075] Figure 8 It is a block diagram of a device for constructing a pure electric utilization coefficient based on energy transmission according to an embodiment of the present invention.

[0076] like Figure 8 As shown, the device 10 for constructing a pure electric utilization coefficient based on energy transmission includes: a division module 100 , a calculation module 200 and a fitting module 300 .

[0077] Among them, the division module 100 is used to divide the effective trip information into multiple trips with the hybrid vehicle's cruising range label as a reference, and construct a trip data set in the time sequence of the multiple trips, wherein the trip data set includes multiple trips and transient parameter information corresponding to each trip; the calculation module 200 is used to calculate the motor drive energy ratio of each trip according to the transient parameter information corresponding to each trip, and perform weighted average on the motor drive energy ratio of each trip under each cruising range label to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label; the fitting module 300 is used to fit the comprehensive motor drive energy ratio corresponding to each cruising range label to obtain the pure electric utilization coefficient of the hybrid vehicle.

[0078] In one embodiment of the present invention, the calculation module 200 is further used to calculate the motor output energy and the engine output energy respectively according to the transient parameter information corresponding to each stroke; and calculate the motor drive energy ratio corresponding to each stroke according to the motor output energy and the engine output energy.

[0079] In one embodiment of the present invention, the calculation formula of the motor drive energy ratio is:

[0080] in, For label Next The total duration of the trip, Represents the transmission efficiency between the power battery and the motor. Represents the thermal efficiency of the engine, express The instantaneous output power of the motor at this moment, express The instantaneous output power of the engine at the moment.

[0081] In one embodiment of the present invention, the calculation module 200 is further used to: calculate the weight value of each trip under each cruising range label respectively; calculate the energy flow transmission conversion ratio of each trip under each cruising range label according to the weight value of each trip under each cruising range label and the motor drive energy ratio corresponding to each trip; and average the energy flow transmission conversion ratio of each trip to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label.

[0082] In one embodiment of the present invention, the calculation formula of the weight value of each trip is:

[0083] in, Indicates The weight of the trip, Indicates The mileage of the trip.

[0084] In one embodiment of the present invention, if the increase in the SOC battery state of charge of the hybrid vehicle from one power-off to another power-on exceeds a preset value, it is determined as one charge, and the period between two charges is one trip.

[0085] In one embodiment of the present invention, the fitting module 300 is further used to fit the comprehensive motor drive energy ratio corresponding to each cruising range label using an exponential polynomial with constraints; and generate the pure electric utilization coefficient of the hybrid vehicle according to the fitting result.

[0086] It should be noted that the aforementioned explanation of the embodiment of the method for constructing a pure electric utilization coefficient based on energy transmission is also applicable to the device for constructing a pure electric utilization coefficient based on energy transmission in this embodiment, and will not be repeated here.

[0087] Fig. 9 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. The electronic device may include: A memory 901 , a processor 902 , and a computer program stored in the memory 901 and executable on the processor 902 .

[0088] When the processor 902 executes the program, the method for constructing the pure electricity utilization coefficient based on energy transmission provided in the above embodiment is implemented.

[0089] Furthermore, the electronic device further comprises: The communication interface 903 is used for communication between the memory 901 and the processor 902 .

[0090] The memory 901 is used to store computer programs that can be executed on the processor 902 .

[0091] The memory 901 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0092] If the memory 901, the processor 902 and the communication interface 903 are implemented independently, the communication interface 903, the memory 901 and the processor 902 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0093] Optionally, in a specific implementation, if the memory 901, the processor 902 and the communication interface 903 are integrated on a chip, the memory 901, the processor 902 and the communication interface 903 can communicate with each other through an internal interface.

[0094] The processor 902 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0095] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned method for constructing a pure electricity utilization coefficient based on energy transmission.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0097] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0098] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0099] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0100] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0101] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for constructing a pure electricity utilization coefficient based on energy transmission, characterized in that: The following steps are involved: Dividing the effective trip information into a plurality of trips with reference to the cruising range label of the hybrid vehicle, and constructing a trip data set according to the time sequence of the plurality of trips, wherein the trip data set includes the plurality of trips and transient parameter information corresponding to each trip; Calculating the motor drive energy ratio of each trip according to the transient parameter information corresponding to each trip, performing weighted average on the motor drive energy ratio of each trip under each cruising range label, and obtaining the comprehensive motor drive energy ratio corresponding to each cruising range label; The comprehensive motor drive energy ratio corresponding to each cruising range label is fitted to obtain the pure electric utilization coefficient of the hybrid vehicle.

2. The method for constructing a pure electric utilization coefficient based on energy transmission according to claim 1, characterized in that: The calculating the motor drive energy ratio of each stroke according to the transient parameter information corresponding to each stroke includes: Calculate the motor output energy and the engine output energy respectively according to the transient parameter information corresponding to each stroke; The motor drive energy ratio corresponding to each stroke is calculated according to the motor output energy and the engine output energy.

3. The method for constructing a pure electric utilization coefficient based on energy transmission according to claim 2, characterized in that: The calculation formula of the motor drive energy ratio is: in, For label Next The total duration of the trip, Represents the transmission efficiency between the power battery and the motor. Represents the thermal efficiency of the engine, express The instantaneous output power of the motor at this moment, express The instantaneous output power of the engine at the moment.

4. The method for constructing a pure electric utilization coefficient based on energy transmission according to any one of claims 1 to 3, characterized in that: The weighted average of the motor drive energy ratio of each trip under each cruising range label is performed to obtain the comprehensive motor drive energy ratio corresponding to each cruising range label, including: Calculate the weight value of each trip under each cruising range label respectively; Calculating the energy flow transmission conversion ratio of each trip under each cruising range label according to the weight value of each trip under each cruising range label and the motor drive energy ratio corresponding to each trip; The energy flow transmission conversion ratio of each trip is averaged to obtain the comprehensive motor drive energy ratio corresponding to each cruising range tag.

5. According to the method for constructing a pure electric utilization coefficient based on energy transmission according to claim 4, the calculation formula of the weight value of each trip is: in, Indicates The weight of the trip, Indicates The mileage of the trip.

6. According to the method for constructing a pure electric utilization coefficient based on energy transmission in claim 1, if the increase in the SOC battery state of charge of the hybrid vehicle from one power-off to another power-on exceeds a preset value, it is determined as one charge, and the period between two charges is one trip.

7. The method for constructing a pure electric utilization coefficient based on energy transmission according to claim 1, fitting the comprehensive motor drive energy ratio corresponding to each cruising range label to obtain the pure electric utilization coefficient of the hybrid vehicle, comprising: Using an exponential polynomial with constraints to fit the comprehensive motor drive energy ratio corresponding to each cruising range label; The pure electric utilization coefficient of the hybrid vehicle is generated according to the fitting result.

8. A device for constructing a pure electric utilization coefficient based on energy transmission, characterized in that: include: a division module, for dividing the valid trip information into a plurality of trips with reference to the cruising range label of the hybrid vehicle, and constructing a trip data set according to the time sequence of the plurality of trips, wherein the trip data set includes the plurality of trips and transient parameter information corresponding to each trip; A calculation module, used to calculate the motor drive energy ratio of each trip according to the transient parameter information corresponding to each trip, and to perform weighted average on the motor drive energy ratio of each trip under each cruising range label to obtain a comprehensive motor drive energy ratio corresponding to each cruising range label; The fitting module is used to fit the comprehensive motor drive energy ratio corresponding to each cruising range label to obtain the pure electric utilization coefficient of the hybrid vehicle.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for constructing a pure electric utilization coefficient based on energy transmission as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed, the method for constructing a pure electric utilization coefficient based on energy transmission as described in any one of claims 1 to 7 is implemented.

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