A shortened method and related device for determining the cycle operating conditions of Chinese light vehicles
Through an iterative process using two sets of test data, the shortened operating cycle of the target model for Chinese light vehicles was quickly determined, solving the problem of low efficiency in existing technologies and reducing time and costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SAIC MOTOR
- Filing Date
- 2021-11-26
- Publication Date
- 2026-05-26
AI Technical Summary
Existing methods for determining shortened operating cycles for different types of Chinese light vehicles are inefficient, requiring significant manpower and resources, and are further hampered by repeated manual assignment and correction.
The initial shortened Chinese light vehicle cycle condition is determined based on the initial deceleration time of the target vehicle model, and the first test data is obtained. The second deceleration time is determined based on the first test data, and the second test data is obtained. Finally, the target shortened Chinese light vehicle cycle condition is determined.
It enables the rapid determination of shortened operating cycles for different models of Chinese light vehicles, reducing time and costs and avoiding the problem of repeated testing.
Smart Images
Figure CN116186551B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and in particular to a method and apparatus for determining the cycle operating conditions of a shortened Chinese light vehicle. Background Technology
[0002] Vehicle operating conditions are used to simulate the actual road driving conditions of a vehicle. Vehicle operating conditions are the basis for vehicle development and evaluation, especially as the fundamental basis for vehicle energy consumption or emission limits.
[0003] The China Light-Duty Vehicle Test Cycle (CLTC) is a test cycle for light-duty vehicles developed in China based on domestic conditions. The shortened CLTC (CLTC-shorten) is a new test cycle designed to reduce the time required for vehicle testing. Both the CLTC and the shortened CLTC are essential test cycles for the development and testing of pure electric vehicles.
[0004] However, the shortened operating cycle for Chinese light vehicles varies depending on the specific pure electric vehicle model, and the final determination must be based on simulation or experimental data for that model. Current methods rely on multiple manual assignments, simulations, or experiments, followed by corrections, to determine the shortened operating cycle for that particular model of Chinese light vehicle. This process is labor-intensive and inefficient. Summary of the Invention
[0005] To address the aforementioned technical problems in the existing technology, this application provides a method and related apparatus for determining the cycle operating conditions of shortened Chinese light vehicles, thereby improving the efficiency of determining the cycle operating conditions of shortened Chinese light vehicles of different models.
[0006] On the one hand, embodiments of this application provide a method for determining the shortened operating cycle of Chinese light vehicles, the method comprising:
[0007] The initial shortened cycle conditions for Chinese light vehicles are determined based on the initial deceleration time of the target vehicle model.
[0008] Obtain the first test data of the target vehicle model under the initial shortened Chinese light vehicle cycle test;
[0009] Based on the first test data, the second-generation deceleration time of the second-generation shortened Chinese light vehicle under cyclic operating conditions was determined.
[0010] Obtain the second test data of the target vehicle model under the cycle conditions of the second-generation shortened Chinese light vehicle;
[0011] Based on the second test data, the target shortened Chinese light vehicle cycle operating conditions for the target model are determined.
[0012] In one possible implementation, the initial deceleration time is preset, or determined based on the battery capacity and vehicle weight of the target vehicle model.
[0013] In one possible implementation, the target vehicle model is tested using the initial shortened Chinese light vehicle cycle, including:
[0014] The vehicle model belonging to the target vehicle type is simulated using the initial shortened Chinese light vehicle cycle condition, or the vehicle belonging to the target vehicle type is tested using the initial shortened Chinese light vehicle cycle condition.
[0015] In one possible implementation, determining the second-generation deceleration time for the second-generation shortened Chinese light vehicle cyclic operating condition based on the first test data includes:
[0016] Based on the first test data, determine the first remaining energy ratio of the initial shortened Chinese light vehicle cycle and the discharge rate of the first battery per second during the constant speed segment of the initial shortened Chinese light vehicle cycle.
[0017] Based on the first remaining energy ratio and the first battery discharge rate per second, the first maneuver time corresponding to the initial shortened Chinese light vehicle cycle condition is determined;
[0018] Based on the first remaining energy ratio and the first maneuvering time, the second-generation deceleration time of the second-generation shortened Chinese light vehicle cyclic operating condition is determined.
[0019] In one possible implementation, determining the second-generation deceleration time for the second-generation shortened Chinese light vehicle cycle based on the first remaining energy ratio and the first maneuver time includes:
[0020] Determine whether the first remaining energy percentage is less than a threshold.
[0021] If so, the second-generation deceleration time is determined to be the difference between the initial deceleration time and the first maneuver time;
[0022] If not, the second-generation deceleration time is determined to be the difference between the initial deceleration time and the first maneuver time.
[0023] In one possible implementation, determining the target shortened Chinese light vehicle cycle condition based on the second test data includes:
[0024] Based on the second test data, the target deceleration time, driving range, and energy consumption per 100 kilometers of the target vehicle model are determined.
[0025] In one possible implementation, determining the target vehicle's range and energy consumption per 100 kilometers based on the second test data includes:
[0026] Based on the second test data, calculate the net battery discharge of each sub-stage of the second-generation shortened Chinese light vehicle cycle condition; based on the second test data, calculate the weighting coefficient of each sub-stage.
[0027] The energy consumption per 100 kilometers and the driving range of the target vehicle are determined based on the net discharge capacity of the battery and the weighting coefficient.
[0028] On the other hand, embodiments of this application provide a shortened Chinese light vehicle cycle condition determination device, the device comprising a determination unit and an acquisition unit:
[0029] The determining unit is used to determine the initial shortened Chinese light vehicle cycle condition based on the initial deceleration time of the target vehicle model.
[0030] The acquisition unit is used to acquire the first test data of the target vehicle model under the initial shortened Chinese light vehicle cycle test;
[0031] The determining unit is further configured to determine the second-generation deceleration time of the second-generation shortened cycle condition based on the first test data.
[0032] The acquisition unit is also used to acquire second test data of the target vehicle model tested under the second-generation shortened Chinese light vehicle cycle conditions;
[0033] The determining unit is further configured to determine the target shortened Chinese light vehicle cycle condition of the target model based on the second test data.
[0034] On the other hand, embodiments of this application provide a device for determining the shortened operating cycle of Chinese light vehicles, the device including a processor and a memory:
[0035] The memory is used to store program code and transmit the program code to the processor;
[0036] The processor is configured to execute the methods described above according to instructions in the program code.
[0037] On the other hand, embodiments of this application provide a computer-readable storage medium for storing a computer medium, wherein the computer program is used to perform the methods described above.
[0038] As can be seen from the above technical solution, the initial shortened cycle condition is determined based on the initial deceleration time of the target vehicle. Then, first test data of the target vehicle under the initial shortened cycle condition is obtained. Next, based on the first test data, the second-generation deceleration time of the second-generation shortened cycle condition is determined. Then, second test data of the target vehicle under the second-generation shortened cycle condition is obtained again. Finally, based on the second test data, the target shortened cycle condition of the target vehicle is determined. Therefore, the validity of the test results can be achieved through two tests, avoiding the problem of repeated testing caused by manually assigning values to approximate the valid results, reducing time and cost. This allows for the rapid determination of shortened cycle conditions for different Chinese light vehicle models. Attached Figure Description
[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0040] Figure 1 A flowchart illustrating a shortened method for determining the cyclic operating conditions of Chinese light vehicles, provided as an embodiment of this application;
[0041] Figure 2 A flowchart illustrating another shortened method for determining the cyclic operating conditions of Chinese light vehicles, provided for an embodiment of this application;
[0042] Figure 3 A flowchart illustrating another shortened method for determining the cyclic operating conditions of Chinese light vehicles, provided for an embodiment of this application;
[0043] Figure 4 A flowchart illustrating another shortened method for determining the cyclic operating conditions of Chinese light vehicles, provided for an embodiment of this application;
[0044] Figure 5 A complete structural diagram of a shortened Chinese light vehicle cycle condition determination device provided in this application embodiment;
[0045] Figure 6 This is a structural schematic diagram of a shortened Chinese light vehicle cycle condition device provided in an embodiment of this application. Detailed Implementation
[0046] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0047] In related technologies, the shortened operating cycle conditions for different Chinese light vehicle models are determined through manual assignment and approximation, which involves long development and testing times. Therefore, this application provides a method and related apparatus for determining the shortened operating cycle conditions for Chinese light vehicles, reducing time and cost, thereby enabling rapid determination of the shortened operating cycle conditions for different vehicle models.
[0048] The shortened cycle operating condition determination method for Chinese light vehicles provided in this application can be applied to a determination device with data processing capabilities, such as a terminal device or a server. This method can be executed independently by the terminal device or independently by the server, or it can be applied to network scenarios where the terminal device and server communicate, executing in cooperation. The terminal device can be a mobile phone, tablet, etc.; the server can be understood as an application server or a web server. In actual deployment, the server can be a standalone server or a cluster server. For ease of description, the following description uses a server as the determination device to illustrate the embodiments of this application.
[0049] See Figure 1 , Figure 1 This is a flowchart illustrating a shortened method for determining the cyclic operating conditions of Chinese light vehicles, provided as an embodiment of this application. Figure 1 As shown, the method for determining the cycle operating conditions of the shortened Chinese light vehicle includes the following steps:
[0050] S101: Determine the initial shortened cycle conditions for Chinese light vehicles based on the initial deceleration time of the target vehicle model.
[0051] See Figure 2 , Figure 2 A schematic diagram of a shortened operating cycle for Chinese light vehicles is shown. (For example...) Figure 2As shown, a CLTC-shorten cycle consists of segments Ds1_CLTC1, Ds1_CLTC2, CSSM, Ds2_CLTC1, Ds2_CLTC2, and CSSE. Each of segments Ds1_CLTC1, Ds1_CLTC2, Ds2_CLTC1, and Ds2_CLTC2 constitutes a complete CLTC cycle. Segments CSSM and CSSE involve accelerating from 0 km / h to 100 km / h, maintaining that speed, and then decelerating back to 0 km / h. The acceleration process must be completed within 60 seconds. The time from the start of segment Ds1_CLTC1 to the start of deceleration in segment CSSM is defined as the deceleration time t. d In other words, a CLTC-shorten cycle consists of four standard CLTC operating conditions and two constant speed 100km / h operating conditions.
[0052] For the target vehicle model, first determine the initial deceleration time t corresponding to the initial shortened Chinese light vehicle cycle condition. db Specifically, the initial deceleration time t db The value can be set according to the battery capacity and vehicle weight of the target model, ranging from 5000-10000s, or any value can be set within this range. For ease of description, the initial operating condition CLTC_begin will be used to refer to the initial shortened cycle operating condition for Chinese light vehicles.
[0053] Since the difference between different car models in the CLTC-shorten cycle lies in the duration of the constant speed driving phase, therefore, given the initial deceleration time t... db Then, the duration of the constant speed travel phase can be determined, and thus CLTC_begin can be determined.
[0054] S102: Obtain the first test data of the target vehicle model under the initial shortened Chinese light vehicle cycle test.
[0055] The target vehicle model will be tested using the aforementioned CLTC_begin method, and the corresponding first test data will be acquired or recorded. Specifically, the first test data includes the test time t, the total battery output energy, and the total battery input energy.
[0056] In actual testing, a vehicle model corresponding to the target model can be built in testing software (such as Cruise), and then the vehicle model can be simulated using CLTC_begin. Alternatively, a vehicle belonging to the target model can be tested using CLTC_begin. The specific testing process can be determined according to the actual scenario, and no restrictions are imposed here.
[0057] S103: Based on the first test data, determine the second-generation deceleration time of the second-generation shortened Chinese light vehicle cyclic operating condition.
[0058] In this embodiment of the application, the second-generation deceleration time of the second-generation shortened Chinese light vehicle cycle is determined based on the first test data. For ease of description, the second-generation cycle of the Chinese light vehicle will be referred to as CLTC_second thereafter.
[0059] like Figure 3 As shown, the specific calculation process for the second-generation deceleration time is as follows:
[0060] (1) Calculate the first residual energy ratio e of CLTC_begin r The specific calculation process is expressed by the following mathematical expression:
[0061]
[0062] Among them, E D2C2_out E represents the total battery discharge energy at the end of stage Ds2_CLTC2; D2C2_in E represents the total battery charging energy at the end of stage Ds2_CLTC2. e_out E represents the total battery discharge energy at the end of the entire operating cycle. e_in This represents the total battery charging energy at the end of the entire operating cycle.
[0063] (2) Calculate the discharge rate p of the first battery per second during the constant speed driving phase in the CSSM segment of CLTC_begin. The specific calculation process is expressed by the following mathematical expression:
[0064]
[0065] Among them, E a_out E represents the total battery discharge energy at the moment when deceleration begins after the constant speed driving phase in the CSSM segment ends. a500_out This represents the total battery discharge energy value 500 seconds before the start of deceleration at the end of the constant speed driving phase in the CSSM segment.
[0066] (3) Calculate the first maneuver time t de The specific calculation process is expressed by the following mathematical expression:
[0067]
[0068] (4) Calculate the second-generation deceleration time t of CLTC_second. ds .
[0069] Determine the first remaining energy ratio e r Is it less than the threshold of 0.099? If so, then the second-generation deceleration time t...ds The initial deceleration time t db and the first maneuver time t de The difference, expressed mathematically, is as follows:
[0070] t ds =t db -t de
[0071] If not, then the second-generation deceleration time t ds The initial deceleration time t db and the first maneuver time t de The sum, mathematically expressed as follows:
[0072] t ds =t db +t de
[0073] S104: Obtain the second test data of the target vehicle model under the cycle conditions of the second-generation shortened Chinese light vehicle.
[0074] Based on the above, after determining the second-generation deceleration time, CLTC_second can be determined. Therefore, the target vehicle model is tested using CLTC_second to obtain the second test data. This second test data includes test time t, total battery output energy, total battery input energy, remaining battery charge (State of Charge), and driving distance.
[0075] In actual testing, the target vehicle model can be used again in the Cruise testing software to simulate the vehicle model using CLTC_second. Alternatively, a vehicle belonging to the target model can be tested using CLTC_second. The specific testing process can be determined according to the actual scenario, and no limitations are imposed here.
[0076] S105: Based on the second test data, determine the target shortened Chinese light vehicle cycle condition for the target vehicle model.
[0077] After the second test, based on the data from the second test, the target shortened operating cycle for the target model of the Chinese light vehicle was determined, namely, the target deceleration time, driving range, and energy consumption per 100 kilometers. For example... Figure 4 As shown, the specific calculation process is as follows:
[0078] (1) Calculate the net battery discharge amount, E, during the Ds1_CLTC1 stage respectively. pD1C1 The net battery discharge E during the Ds1_CLTC2 stage pD1C2 The net battery discharge capacity E during the CSSM segment of the intermediate constant speed section. pCSSMThe net battery discharge E during the Ds2_CLTC1 stage pD2C1 The net battery discharge E during the Ds2_CLTC2 stage pD2C2 And the final constant speed segment CSSE segment net battery discharge E pCSSE The specific calculation formula is as follows:
[0079] E pD1C1 =E pD1C1e
[0080] E pD1C2 =E pD1C2e -E pD1C1e
[0081] E pCSSM =E pCSSMe -E pD1C2e
[0082] E pD2C1 =E pD2C1e -E pCSSMe
[0083] E pD2C2 =E pD2C2e -E pD2C1e
[0084] E pCSSE =E pCSSEe -E pD2C2e
[0085] Among them, E pD1C1e E represents the net battery discharge value at the end of stage Ds1_CLTC1. pD1C2e E represents the net battery discharge value at the end of stage Ds1_CLTC2. pCSSMe E represents the net battery discharge at the end of the CSSM segment. pD2C1e E represents the net battery discharge value at the end of stage Ds2_CLTC1. pD2C2e E represents the net battery discharge value at the end of the Ds2_CLTC2 stage. pCSSEe This represents the net battery discharge at the end of the final constant velocity (CSSE) segment. All variables in the above formula are in kilojoules (kJ).
[0086] (2) Calculate the weight coefficients k1, k2, k3, and k4 for the Ds1_CLTC1, Ds1_CLTC2, Ds2_CLTC1, and Ds2_CLTC2 stages, respectively. The specific calculation formulas are as follows:
[0087]
[0088]
[0089]
[0090] k4 = k3
[0091] (3) Calculate the second remaining energy ratio ers of CLTC_second. The specific calculation process is expressed by the following mathematical expression:
[0092]
[0093] Among them, E D2C2_out_s E represents the total battery discharge energy at the end of the Ds2_CLTC2 stage in the second-generation operating condition. D2C2_in_s E represents the total battery charging energy at the end of the Ds2_CLTC2 stage in the second-generation operating condition. e_out_s E represents the total battery discharge energy at the end of the entire second-generation operating cycle. e_in_s The total charging energy of the battery at the end of the entire second-generation operating cycle; the unit is kilojoules (kJ).
[0094] (4) Calculate the discharge rate p of the second battery during the constant speed driving phase in the CSSM segment of CLTC_second. The specific calculation process is expressed by the following mathematical expression:
[0095]
[0096] Among them, E a_out_s To obtain the total battery discharge energy value at the moment of deceleration starting after the end of the constant speed driving phase in the CSSM segment through CLTC_second simulation or testing; E a500_out_s The total battery discharge energy is the value 500 seconds before the start of deceleration at the end of the constant speed driving phase in the CSSM segment; the unit is kilojoules (kJ).
[0097] (6) Calculate the second maneuver time t des The specific calculation process is expressed by the following mathematical expression:
[0098]
[0099] (7) Calculate the second deceleration time t f .
[0100] Determine if the second remaining energy ratio is less than 0.099. If so, then the target deceleration time t for the target vehicle model is... f The second deceleration time t ds With the second maneuver time t des The difference, specifically the calculation process, is expressed mathematically as follows:
[0101] t f =t ds-t des
[0102] If not, then the target deceleration time t f The second deceleration time t ds With the second maneuver time t des The sum, and the specific calculation process, are expressed by the following mathematical expression:
[0103] t f =t ds +t des
[0104] (8) Calculate the driving range d corresponding to the target vehicle model. f and energy consumption per 100 kilometers f The specific calculation process is represented by the following data expression:
[0105]
[0106]
[0107] Where, d D1C1 d represents the distance traveled during stage Ds1_CLTC1. D1C2 Let d be the distance traveled during stage Ds1_CLTC2. D2C1 d represents the distance traveled during stage Ds2_CLTC1. D2C2 The distance traveled during the Ds2_CLTC2 phase is expressed in kilometers (km).
[0108] The method for determining the shortened operating cycle of Chinese light vehicles provided in the above embodiments determines the initial shortened operating cycle based on the initial deceleration time of the target vehicle model. Then, it acquires first test data of the target vehicle model tested under the initial shortened operating cycle. Next, based on the first test data, it determines the second-generation deceleration time of the second-generation shortened operating cycle. Finally, it acquires second test data of the target vehicle model tested under the second-generation shortened operating cycle. Based on the second test data, it determines the target shortened operating cycle of the target vehicle model. Therefore, the validity of the test results can be achieved through two tests, avoiding the problem of repeated testing caused by manually assigning values to approximate the valid results, reducing time and cost, and enabling the rapid determination of the shortened operating cycle of Chinese light vehicles for different models.
[0109] To better understand, the following will be combined with... Figure 5 This application introduces a method for determining the shortened operating cycle of Chinese light vehicles, as provided in its embodiments. For example... Figure 5 As shown, it includes the following steps:
[0110] S501: Determine the initial deceleration time.
[0111] S502: Determine the initial operating condition CLTC_begin.
[0112] S503: Simulate or test the target vehicle model using initial operating conditions.
[0113] S504: Obtain initial simulation or test process data.
[0114] S505: Second-generation deceleration time calculated based on process data.
[0115] S506: Generate the second-generation operating condition CLTC_second.
[0116] S507: Simulate or test the target vehicle model using second-generation operating conditions.
[0117] S508: Acquire data from the second-generation simulation or testing process.
[0118] S509: The final deceleration time, driving range, and energy consumption per 100 kilometers are calculated based on the second-generation process data.
[0119] S510: Outputs the shortened Chinese light vehicle cycle conditions corresponding to the target vehicle model.
[0120] As can be seen from the above, the shortened Chinese light vehicle cycle conditions for the target model can be quickly determined through only two test calculations. This effectively improves the efficiency of determining the shortened Chinese light vehicle cycle conditions for different models and reduces time and cost.
[0121] In view of the shortened Chinese light vehicle cycle condition determination method provided in the above embodiments, this application also provides a shortened Chinese light vehicle cycle condition determination device.
[0122] See Figure 6 , Figure 6 This is a structural schematic diagram of a shortened cycle operating condition device for Chinese light vehicles provided in an embodiment of this application. (See attached diagram.) Figure 6 The device 600 includes a determining unit 601 and an acquiring unit 602.
[0123] The determining unit 601 is used to determine the initial shortened Chinese light vehicle cycle condition based on the initial deceleration time of the target vehicle model.
[0124] The acquisition unit 602 is used to acquire the first test data of the target vehicle model under the initial shortened Chinese light vehicle cycle test.
[0125] The determining unit 601 is further configured to determine the second-generation deceleration time of the second-generation shortened Chinese light vehicle cyclic operating condition based on the first test data.
[0126] The acquisition unit 602 is also used to acquire second test data of the target vehicle model tested under the second-generation shortened Chinese light vehicle cycle conditions;
[0127] The determining unit 601 is further configured to determine the target shortened Chinese light vehicle cycle condition of the target model based on the second test data.
[0128] In one possible implementation, the initial deceleration time is preset, or determined based on the battery capacity and vehicle weight of the target vehicle model.
[0129] In one possible implementation, the target vehicle model is tested using the initial shortened Chinese light vehicle cycle, including:
[0130] The vehicle model belonging to the target vehicle type is simulated using the initial shortened Chinese light vehicle cycle condition, or the vehicle belonging to the target vehicle type is tested using the initial shortened Chinese light vehicle cycle condition.
[0131] In one possible implementation, the determining unit 601 is configured to:
[0132] Based on the first test data, determine the first remaining energy ratio of the initial shortened Chinese light vehicle cycle and the discharge rate of the first battery per second during the constant speed segment of the initial shortened Chinese light vehicle cycle.
[0133] Based on the first remaining energy ratio and the first battery discharge rate per second, the first maneuver time corresponding to the initial shortened Chinese light vehicle cycle condition is determined;
[0134] Based on the first remaining energy ratio and the first maneuvering time, the second-generation deceleration time of the second-generation shortened Chinese light vehicle cyclic operating condition is determined.
[0135] In one possible implementation, the determining unit 601 is configured to:
[0136] Determine whether the first remaining energy percentage is less than a threshold.
[0137] If so, the second-generation deceleration time is determined to be the difference between the initial deceleration time and the first maneuver time;
[0138] If not, the second-generation deceleration time is determined to be the difference between the initial deceleration time and the first maneuver time.
[0139] In one possible implementation, the determining unit 601 is configured to:
[0140] Based on the second test data, the target deceleration time, driving range, and energy consumption per 100 kilometers of the target vehicle model are determined.
[0141] In one possible implementation, the determining unit 601 is configured to:
[0142] Based on the second test data, calculate the net battery discharge of each sub-stage of the second-generation shortened Chinese light vehicle cycle condition; based on the second test data, calculate the weighting coefficient of each sub-stage.
[0143] The shortened operating cycle determination device for Chinese light vehicles provided in the above embodiments determines an initial shortened operating cycle based on the initial deceleration time of the target vehicle model. Then, it acquires first test data of the target vehicle model tested under the initial shortened operating cycle. Next, based on the first test data, it determines the second-generation deceleration time of the second-generation shortened operating cycle. Finally, it acquires second test data of the target vehicle model tested under the second-generation shortened operating cycle. Based on the second test data, it determines the target shortened operating cycle for the target vehicle model. Therefore, the validity of the test results can be achieved through two tests, avoiding the problem of repeated testing caused by manually assigning values to approximate valid results, reducing time and cost, and enabling the rapid determination of shortened operating cycles for different Chinese light vehicle models.
[0144] This application also provides an apparatus for determining the operating conditions of a shortened cycle of Chinese light vehicles, the apparatus comprising a processor and a memory:
[0145] The memory is used to store program code and transmit the program code to the processor;
[0146] The processor is used to execute the method provided in the above embodiments according to the instructions in the program code.
[0147] This application also provides a computer-readable storage medium for storing a computer medium, wherein the computer program is used to execute the method provided in the above embodiments.
[0148] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium can be at least one of the following media: read-only memory (ROM), RAM, magnetic disk, or optical disk, etc., and other media capable of storing program code.
[0149] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments. The device and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of the solution in this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.
[0150] The above description is merely one specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A method for determining the shortened operating cycle of Chinese light vehicles, characterized in that, The method includes: The initial shortened cycle conditions for Chinese light vehicles are determined based on the initial deceleration time of the target vehicle model. Acquire the first test data of the target vehicle model under the initial shortened Chinese light vehicle cycle test, the first test data including test time, total battery output energy and total battery input energy; Based on the first test data, the second-generation deceleration time of the second-generation shortened Chinese light vehicle under cyclic operating conditions was determined. The second test data is obtained by testing the target vehicle model under the second-generation shortened Chinese light vehicle cycle conditions. The second test data includes the test time, the total output energy of the battery, the total input energy of the battery, the remaining battery charge, and the driving distance. Based on the second test data, the target shortened Chinese light vehicle cycle operating conditions of the target vehicle model are determined; The determination of the second-generation deceleration time for the second-generation shortened Chinese light vehicle cyclic operating condition based on the first test data includes: Based on the first test data, determine the first remaining energy ratio of the initial shortened Chinese light vehicle cycle and the discharge rate of the first battery per second during the constant speed segment of the initial shortened Chinese light vehicle cycle. The first maneuver time corresponding to the initial shortened Chinese light vehicle cycle is obtained by dividing the product of the first remaining energy ratio, the total battery discharge energy value at the end of the entire operating condition, and the total battery charging energy value at the end of the entire operating condition by the first battery discharge rate per second. Based on the first remaining energy ratio and the first maneuver time, the second-generation deceleration time of the second-generation shortened Chinese light vehicle cycle is determined. The step of determining the target shortened Chinese light vehicle cycle condition based on the second test data includes: Based on the second test data, calculate the net battery discharge of each sub-stage of the second-generation shortened Chinese light vehicle cycle condition; based on the second test data, calculate the weighting coefficient of each sub-stage. The energy consumption per 100 kilometers and driving range of the target vehicle are determined based on the net discharge capacity of the battery and the weighting coefficient.
2. The method according to claim 1, characterized in that, The initial deceleration time is preset, or determined based on the battery capacity and vehicle weight of the target vehicle model.
3. The method according to claim 1, characterized in that, The target vehicle model was tested using the initial shortened Chinese light vehicle cycle conditions, including: The vehicle model belonging to the target vehicle type is simulated using the initial shortened Chinese light vehicle cycle condition, or the vehicle belonging to the target vehicle type is tested using the initial shortened Chinese light vehicle cycle condition.
4. The method according to claim 1, characterized in that, The determination of the second-generation deceleration time for the second-generation shortened Chinese light vehicle cyclic operating condition based on the first remaining energy ratio and the first maneuvering time includes: Determine whether the first remaining energy percentage is less than a threshold. If so, the second-generation deceleration time is determined to be the difference between the initial deceleration time and the first maneuver time; If not, the second-generation deceleration time is determined to be the sum of the initial deceleration time and the first maneuver time.
5. A shortened cycle operating condition determination device for Chinese light vehicles, characterized in that, The device includes a determining unit and an acquiring unit: The determining unit is used to determine the initial shortened Chinese light vehicle cycle condition based on the initial deceleration time of the target vehicle model. The acquisition unit is used to acquire first test data of the target vehicle model under the initial shortened Chinese light vehicle cycle test, the first test data including test time, total battery output energy and total battery input energy; The determining unit is further configured to determine the second-generation deceleration time of the second-generation shortened Chinese light vehicle cyclic operating condition based on the first test data. The acquisition unit is further configured to acquire second test data of the target vehicle model tested under the second-generation shortened Chinese light vehicle cycle conditions. The second test data includes the test time, the total output energy of the battery, the total input energy of the battery, the remaining battery charge, and the driving distance. The determining unit is further configured to determine the target shortened Chinese light vehicle cycle condition of the target model based on the second test data; The determining unit is used for: Based on the first test data, determine the first remaining energy ratio of the initial shortened Chinese light vehicle cycle and the discharge rate of the first battery per second during the constant speed segment of the initial shortened Chinese light vehicle cycle. The first maneuver time corresponding to the initial shortened Chinese light vehicle cycle is obtained by dividing the product of the first remaining energy ratio, the total battery discharge energy value at the end of the entire operating condition, and the total battery charging energy value at the end of the entire operating condition by the first battery discharge rate per second. Based on the first remaining energy ratio and the first maneuver time, the second-generation deceleration time of the second-generation shortened Chinese light vehicle cycle is determined. Based on the second test data, calculate the net battery discharge of each sub-stage of the second-generation shortened Chinese light vehicle cycle condition; Calculate the weight coefficient for each sub-stage based on the second test data; The energy consumption per 100 kilometers and driving range of the target vehicle are determined based on the net discharge capacity of the battery and the weighting coefficient.
6. The device according to claim 5, wherein the initial deceleration time is preset, or is determined based on the battery capacity and vehicle weight of the target vehicle model.
7. The apparatus according to claim 5, further comprising a testing unit for: The vehicle model belonging to the target vehicle type is simulated using the initial shortened Chinese light vehicle cycle condition, or the vehicle belonging to the target vehicle type is tested using the initial shortened Chinese light vehicle cycle condition.
8. The apparatus according to claim 5, wherein the determining unit is configured to: Determine whether the first remaining energy percentage is less than a threshold. If so, the second-generation deceleration time is determined to be the difference between the initial deceleration time and the first maneuver time; If not, the second-generation deceleration time is determined to be the sum of the initial deceleration time and the first maneuver time.
9. A device for determining the cyclic operating conditions of a shortened Chinese light vehicle, characterized in that, The device includes a processor and memory: The memory is used to store program code and transmit the program code to the processor; The processor is configured to execute the method according to any one of claims 1-4 according to the instructions in the program code.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program for performing the method according to any one of claims 1-4.