Simulation test method and device based on voltage characteristics and vehicle

Abstract

The application discloses a simulation test method and device based on voltage characteristics and a vehicle. The method comprises the following steps: based on a high-voltage system topology corresponding to a high-voltage assembly to be tested, performing simulation modeling on a plurality of components in the high-voltage assembly to obtain an initial assembly system model; performing characteristic test on first voltage data of the high-voltage assembly under a nominal working condition by using the initial assembly system model to obtain a first test result; adjusting parameters of the initial assembly system model according to the first test result to obtain a target assembly system model; performing characteristic test on second voltage data of the high-voltage assembly under a plurality of test working conditions by using the target assembly system model to obtain a second test result; and generating a target test result according to the first test result and the second test result. The application solves the technical problem of low test efficiency and poor accuracy of the existing simulation test method.

Description

Technical Field

[0001] This invention relates to the fields of vehicle technology and computer simulation technology, and more specifically, to a simulation test method, apparatus, and vehicle based on voltage characteristics. Background Technology

[0002] In recent years, simulation testing technology for vehicle assemblies has developed rapidly, continuously improving the efficiency of assembly design and development, and reducing product development costs and risks. However, related technologies rarely mention system-level simulation testing schemes for high-voltage assemblies in vehicles based on voltage characteristics. This leads to a higher probability of high-voltage assembly failures during real-vehicle testing, or necessitates a high degree of redundancy design for the high-voltage assembly to reduce the probability of failure, resulting in higher costs.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a voltage characteristic-based simulation test method, apparatus, and vehicle to at least solve the technical problems of low testing efficiency and poor accuracy of existing simulation test methods.

[0005] According to one aspect of the present invention, a voltage characteristic-based simulation testing method is provided, comprising: performing simulation modeling on multiple components in the high-voltage assembly based on the high-voltage system topology corresponding to the high-voltage assembly under test, to obtain an initial assembly system model; using the initial assembly system model to perform characteristic testing on first voltage data of the high-voltage assembly under nominal operating conditions, to obtain a first test result; adjusting the parameters of the initial assembly system model according to the first test result, to obtain a target assembly system model; using the target assembly system model to perform characteristic testing on second voltage data of the high-voltage assembly under various test conditions, to obtain a second test result; and generating a target test result based on the first test result and the second test result, wherein the target test result is used to characterize the performance failure status of the high-voltage assembly under various test conditions.

[0006] Optionally, based on the high-voltage system topology corresponding to the high-voltage assembly, simulation modeling is performed on multiple components in the high-voltage assembly to obtain an initial assembly system model, including: performing behavioral-level simulation modeling on multiple components in the high-voltage assembly to obtain multiple target component models; and performing system-level simulation modeling on multiple target component models based on the high-voltage system topology to obtain an initial assembly system model.

[0007] Optionally, the multiple components include at least: a battery component, an electric drive component, a current conversion component, a temperature component, and a compressor component; performing behavioral-level simulation modeling on the multiple components to obtain multiple target component models includes: modeling each of the multiple components using various behavioral-level modeling strategies to obtain at least one behavioral-level model corresponding to each component; combining the at least one behavioral-level model corresponding to each of the multiple components to obtain an initial component model corresponding to each of the multiple components; and performing simulation analysis and model adjustment on the initial component models corresponding to each of the multiple components according to preset component functional requirements to obtain a target component model corresponding to each of the multiple components.

[0008] Optionally, adjusting the parameters of the initial assembly system model based on the first test results to obtain the target assembly system model includes: adjusting the model parameters of the initial assembly system model based on the first test results and the assembly system simulation indicators corresponding to the nominal operating conditions to obtain the target assembly system model.

[0009] Optionally, the second voltage data is used to perform characteristic tests on the target assembly system model to obtain the second test results, including: real-time acquisition of second voltage data under various test conditions through the acquisition equipment associated with the high voltage assembly; parameter scanning analysis of the high voltage assembly based on the second voltage data and the target assembly system model to obtain analysis results; and generating the second test results in response to the analysis results reaching the preset modeling error conditions.

[0010] Optionally, the various operating conditions corresponding to different test conditions include: ambient temperature, vehicle speed, charging / discharging status, and air conditioning operating status.

[0011] Optionally, parameter scanning analysis is performed on the high-voltage assembly based on the second voltage data and the target assembly system model. The analysis results include: inputting the second voltage data into the target assembly system model for parameter scanning analysis, and obtaining the analysis results, wherein the analysis results include scanning analysis results for multiple voltage characteristic parameters, including: voltage offset parameter, voltage change rate parameter, and voltage load dump parameter.

[0012] Optionally, generating the target test result based on the first test result and the second test result includes: comparing and analyzing the first test result and the second test result to obtain a comparison result, wherein the comparison result includes input data and output data of multiple components in the high-voltage assembly under different voltage characteristics; and generating the target test result based on the comparison result and performance failure criteria.

[0013] According to another aspect of the present invention, a voltage characteristic-based simulation testing device is also provided, comprising: a modeling module, used to perform simulation modeling of multiple components in the high-voltage assembly based on the high-voltage system topology corresponding to the high-voltage assembly under test, to obtain an initial assembly system model; a first testing module, used to perform characteristic testing on first voltage data of the high-voltage assembly under nominal operating conditions using the initial assembly system model, to obtain a first test result; an adjustment module, used to adjust the parameters of the initial assembly system model according to the first test result, to obtain a target assembly system model; a second testing module, used to perform characteristic testing on second voltage data of the high-voltage assembly under various test conditions using the target assembly system model, to obtain a second test result; and a generation module, used to generate a target test result based on the first test result and the second test result, wherein the target test result is used to characterize the performance failure status of the high-voltage assembly under various test conditions.

[0014] According to another aspect of the present invention, a vehicle is also provided, including an on-board memory and an on-board processor. The on-board memory stores a computer program, and the on-board processor is configured to run the computer program to execute the voltage characteristic-based simulation test method described above.

[0015] In this embodiment of the invention, based on the high-voltage system topology corresponding to the high-voltage assembly under test, multiple components in the high-voltage assembly are simulated and modeled to obtain an initial assembly system model. The initial assembly system model is then used to perform characteristic tests on the first voltage data of the high-voltage assembly under nominal operating conditions to obtain a first test result. Further parameter adjustments are made to the initial assembly system model based on the first test result to obtain a target assembly system model. The target assembly system model is then used to perform characteristic tests on the second voltage data of the high-voltage assembly under various test conditions to obtain a second test result. Based on this, a target test result is generated according to the first and second test results. The target test result characterizes the performance and fault conditions of the high-voltage assembly under various test conditions. Therefore, this invention achieves the goal of performing system-level simulation testing of the high-voltage assembly based on voltage characteristics, thereby improving the efficiency and accuracy of high-voltage assembly simulation testing and solving the problems of low testing efficiency and poor accuracy in existing simulation testing methods. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a hardware structure block diagram of a vehicle terminal for a voltage characteristic-based simulation test method according to an embodiment of the present invention.

[0018] Figure 2 This is a flowchart of a voltage characteristic-based simulation test method according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of an optional assembly system model according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of an optional simulation test process according to an embodiment of the present invention;

[0021] Figure 5 This is a structural block diagram of an optional voltage characteristic-based simulation test device according to an embodiment of the present invention. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] According to an embodiment of the present invention, a method embodiment of a simulation test method based on voltage characteristics is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0025] Figure 1 This is a hardware structure block diagram of a vehicle terminal for a voltage characteristic-based simulation test method according to an embodiment of the present invention, such as... Figure 1As shown, the vehicle terminal 10 (or a mobile device 10 that communicates with the vehicle) may include one or more processors 102 (processor 102 may include, but is not limited to, processing devices such as microprocessors (MCUs) or field-programmable gate arrays (FPGAs),) a memory 104 for storing data, and a transmission device 106 for communication functions. In addition, it may also include: a display device 110, an input / output device 108 (i.e., I / O devices), a Universal Serial Bus (USB) port (which may be included as one of the ports of a computer bus, not shown in the figure), a network interface (not shown in the figure), a power supply (not shown in the figure), and / or a camera (not shown in the figure). Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the vehicle terminal 1 described above. For example, the vehicle terminal 10 may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0026] It should be noted that the aforementioned one or more processors 102 and / or other data processing circuits may be embodied, in whole or in part, as software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuitry may be a single, independent processing module, or may be integrated, in whole or in part, into any other element within the vehicle terminal 10 (or mobile device).

[0027] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the voltage characteristic-based simulation test method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby realizing the voltage characteristic-based simulation test method described above. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the vehicle terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0028] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the vehicle terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0029] Under the above operating environment, the embodiments of the present invention provide as follows: Figure 2 The simulation test method based on voltage characteristics is shown. Figure 2 This is a flowchart of a voltage characteristic-based simulation test method according to an embodiment of the present invention, as shown below. Figure 2 As shown above, Figure 2 The illustrated embodiments may include at least the following implementation steps:

[0030] Step S201: Based on the high-voltage system topology corresponding to the high-voltage assembly to be tested, perform simulation modeling on multiple components in the high-voltage assembly to obtain an initial assembly system model;

[0031] Step S202: Use the initial assembly system model to perform characteristic tests on the first voltage data of the high voltage assembly under nominal operating conditions to obtain the first test result;

[0032] Step S203: Adjust the parameters of the initial assembly system model according to the first test results to obtain the target assembly system model;

[0033] Step S204: Use the target assembly system model to perform characteristic tests on the second voltage data of the high voltage assembly under various test conditions to obtain the second test results;

[0034] Step S205: Generate target test results based on the first test results and the second test results, wherein the target test results are used to characterize the performance failure status of the high-voltage assembly under various test conditions.

[0035] In this embodiment of the invention, based on the high-voltage system topology corresponding to the high-voltage assembly under test, multiple components in the high-voltage assembly are simulated and modeled to obtain an initial assembly system model. The initial assembly system model is then used to perform characteristic tests on the first voltage data of the high-voltage assembly under nominal operating conditions to obtain a first test result. Further parameter adjustments are made to the initial assembly system model based on the first test result to obtain a target assembly system model. The target assembly system model is then used to perform characteristic tests on the second voltage data of the high-voltage assembly under various test conditions to obtain a second test result. Based on this, a target test result is generated according to the first and second test results. The target test result characterizes the performance and fault conditions of the high-voltage assembly under various test conditions. Therefore, this invention achieves the goal of performing system-level simulation testing of the high-voltage assembly based on voltage characteristics, thereby improving the efficiency and accuracy of high-voltage assembly simulation testing and solving the problems of low testing efficiency and poor accuracy in existing simulation testing methods.

[0036] Optionally, step S201 above, which involves simulating and modeling multiple components in the high-voltage assembly based on the high-voltage system topology corresponding to the high-voltage assembly to obtain an initial assembly system model, may also include the following execution steps:

[0037] Step S211: Perform behavioral-level simulation modeling on multiple components in the high-voltage assembly to obtain multiple target component models;

[0038] Step S212: Based on the high-voltage system topology, perform system-level simulation modeling on multiple target component models to obtain the initial assembly system model.

[0039] Specifically, based on the component topology of each of the multiple components, behavioral-level modeling is performed on the component to obtain the target component model corresponding to each component. Furthermore, based on the system topology or system topology principle of the high-voltage assembly, system-level simulation modeling is performed on the multiple target component models.

[0040] According to step S211 above, the behavior of multiple components in the high-voltage assembly is described through behavioral-level modeling. Since behavioral-level modeling focuses on the interaction and message passing between multiple components in the high-voltage assembly, the aforementioned target component models can clearly describe the execution process of multiple components in the high-voltage assembly and the interaction between multiple components, which helps developers understand the functions and behaviors of the high-voltage assembly in order to design and implement the high-voltage assembly system.

[0041] Based on the above steps up to S212, the structure of the high-voltage assembly is described by system-level modeling and the structure of the high-voltage assembly by modeling at the assembly level. This focuses on the relationships and dependencies between multiple components in the high-voltage assembly, which helps developers understand the structure of the high-voltage assembly and the dependencies between its components, in order to design and analyze the high-voltage assembly.

[0042] In this embodiment of the invention, by combining complementary behavioral-level modeling and system-level modeling methods, the functions, behaviors, and structures of the high-voltage assembly can be comprehensively and accurately described, which helps developers design, develop, and maintain the high-voltage assembly.

[0043] Optionally, the multiple components include at least: a battery component, an electric drive component, a current conversion component, a temperature component, and a compressor component; in step S211 above, performing behavioral-level simulation modeling on the multiple components to obtain multiple target component models may further include the following execution steps:

[0044] Step S2111: Use multiple behavior-level modeling strategies to model each of the multiple components to obtain at least one behavior-level model for each component.

[0045] Step S2112: Combine at least one behavioral-level model corresponding to each of the multiple components to obtain an initial component model corresponding to each of the multiple components.

[0046] Step S2113: According to the preset component functional requirements, perform simulation analysis and model adjustment on the initial component model corresponding to each of the multiple components to obtain the target component model corresponding to each of the multiple components.

[0047] In application scenarios, various behavioral modeling strategies can be used, but are not limited to: parametric modeling strategies, software tool (such as Saber) modeling strategies, and macro modeling strategies.

[0048] In one optional application scenario according to an embodiment of the present invention, multiple components include: a battery, an electric drive, an AC / DC converter, a temperature control unit (PTC), and a compressor, correspondingly, such as Figure 3 As shown, the initial component models obtained from the above behavioral-level modeling include: battery model, electric drive model, AC / DC model, PTC model and compressor model (the component models corresponding to the high-voltage assembly of some vehicles may also include the on-board power supply model).

[0049] The aforementioned component functional requirements can be pre-defined in the application scenario or determined according to relevant national standards or regulations. By adjusting the model parameters of the initial component model so that the performance simulation verification results under different operating conditions meet the component functional requirements, the corresponding target component model can be obtained.

[0050] For example, in application scenarios, the requirement metrics corresponding to the above component functional requirements include:

[0051] Battery specifications: number of battery cells connected in series and parallel, charge-discharge IV curves of battery cells at different constant currents, and charge-discharge IV curves at different temperatures.

[0052] Electric drive specifications: power / current output at different ambient temperatures and torques; operating efficiency curves at different temperatures and output currents; IGBT switching loss data; switching frequency.

[0053] Vehicle power supply specifications: AC input voltage range, output voltage, output power, converter efficiency, output ripple requirements; charging current mode, battery charging voltage limit, charging start-up delay time, maximum charging current / time;

[0054] AC / DC specifications: standard output voltage, nominal input voltage, operating temperature range, input overvoltage / undervoltage protection threshold, maximum input voltage; rated output current, maximum output current (current limiting curve), output voltage overshoot and recovery time under load step change; output voltage overshoot and recovery time under power supply step change, efficiency curve (under different output power and different input voltage conditions).

[0055] PTC specifications: rated temperature, resistance at rated temperature, first-order linear temperature coefficient, second-order temperature coefficient.

[0056] Compressor specifications: power transistor conduction and switching losses, motor control algorithm block diagram.

[0057] Optionally, step S203 above, which involves adjusting the parameters of the initial assembly system model based on the first test results to obtain the target assembly system model, may further include the following execution steps:

[0058] Step S231: Based on the first test results and the assembly system simulation indicators corresponding to the nominal operating conditions, adjust the model parameters of the initial assembly system model to obtain the target assembly system model.

[0059] Taking the nominal operating condition corresponding to the nominal ambient temperature as an example, the first test result mentioned above includes the simulation voltage curve obtained by simulating the initial assembly model; the test voltage curve determined as the standard in the actual test based on the above assembly system simulation indicators; the model parameters of the initial assembly model are adjusted so that the error between the simulation voltage curve and the test voltage curve is less than 10%, then the current initial assembly model is considered to meet the requirements, and the current initial assembly model is determined as the target assembly system model.

[0060] Optionally, in step S204 above, the characteristic test of the second voltage data using the target assembly system model to obtain the second test result may further include the following execution steps:

[0061] Step S241: Real-time acquisition of second voltage data under various test conditions using the acquisition equipment associated with the high voltage assembly;

[0062] Step S242: Perform parameter scanning analysis on the high-voltage assembly based on the second voltage data and the target assembly system model to obtain the analysis results;

[0063] Step S243: In response to the analysis results reaching the preset modeling error condition, a second test result is generated.

[0064] Optionally, the various operating conditions corresponding to different test conditions include: ambient temperature, vehicle speed, charging / discharging status, and air conditioning operating status.

[0065] In application scenarios, the aforementioned data acquisition devices may include oscilloscopes, power acquisition instruments, etc. Multiple test conditions can be selected from a pre-determined pool of candidate conditions. The vehicle and test bench are operated under these multiple test conditions to acquire the second voltage data.

[0066] In application scenarios, the above-mentioned preset modeling error condition can be: the error between the analysis result and the expected result is less than 10%.

[0067] Optionally, in step S242 above, the parameter scanning analysis of the high-voltage assembly based on the second voltage data and the target assembly system model to obtain the analysis results may also include the following execution steps:

[0068] Step S2421: Input the second voltage data into the target assembly system model for parameter scanning analysis to obtain the analysis results. The analysis results include scanning analysis results for multiple voltage characteristic parameters, including: voltage offset parameter, voltage change rate parameter, and voltage load dump parameter.

[0069] In application scenarios, based on the second voltage data, the voltage deviation parameter, voltage change rate parameter, and voltage load dump parameter of the high-voltage assembly under different operating conditions are analyzed using the target assembly model, thereby obtaining the analysis results. These analysis results can characterize the performance of the high-voltage assembly based on voltage characteristics.

[0070] Optionally, in step S205 above, generating the target test result based on the first test result and the second test result may further include the following execution steps:

[0071] Step S251: Compare and analyze the first test result and the second test result to obtain the comparison result, wherein the comparison result includes the input data and output data of multiple components in the high voltage assembly under different voltage characteristics;

[0072] Step S252: Based on the comparison results and performance failure criteria, generate the target test results.

[0073] In one application scenario, the process of simulating and testing the high-voltage assembly is as follows: Figure 4 As shown, firstly, behavioral-level modeling is performed on each high-voltage assembly to obtain the model of each high-voltage assembly, and functional simulation verification of each assembly under a predetermined working state is completed. Then, a behavioral-level system model is built using the high-voltage system topology as the object, and simulation verification is performed on it under the nominal state to obtain the simulation results under the nominal state. Further, the simulation results are converged by adjusting the parameters. After the simulation results converge, the operating voltage characteristics of each assembly are collected and injected into the system-level model. Then, the assembly model with voltage characteristics is subjected to parameter scanning analysis according to the system model to obtain the system and assembly simulation results with voltage characteristics, until the simulation results of the model with operating condition simulation function are consistent with the modeling target. Thus, by combining the simulation results under the nominal state and operating conditions, the parameters of the system model are obtained, which can provide the voltage parameter output under changing operating conditions.

[0074] Specifically, in the application scenario, the voltage changes that may occur in the entire high-voltage assembly system are obtained by combining the first test results (simulation results under nominal conditions) and the second test results (simulation results under test conditions). In particular, the aforementioned voltage changes are the combination of the first and second test results plus noise. For example, the operating voltage range of the high-voltage assembly system is 300-500V. Within this range, the system may experience instantaneous voltage changes of 300-400V, or noise of around 15V, while the high-voltage assembly needs to operate normally.

[0075] The aforementioned performance failure standards can be pre-set by technicians or determined according to relevant national standards and regulations. These standards determine the operating conditions under which the high-voltage assembly will be in a performance failure state, allowing these conditions to be avoided during real-vehicle testing, thereby reducing testing losses and improving testing efficiency.

[0076] In summary, the beneficial effects of this invention are as follows: By simulating operating conditions, the voltage characteristics within the high-voltage assembly system under different ambient temperatures and operating conditions are analyzed. Furthermore, the input-output characteristics of multiple components of the high-voltage assembly at the vehicle system level are analyzed. The performance and functional changes of the high-voltage assembly under different voltage characteristics are obtained from the analysis, providing guidance for the development of the high-voltage assembly. In addition, it can provide a basis for avoiding or eliminating the impact of temperature and operating conditions on the performance of the high-voltage assembly, and offer corresponding design optimization suggestions.

[0077] In this embodiment, a voltage characteristic-based simulation testing device is also provided. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, a "module" is a combination of software and / or hardware that can perform a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0078] Figure 5 This is a structural block diagram of an optional voltage characteristic-based simulation test device according to an embodiment of the present invention, such as... Figure 5 As shown, the device includes:

[0079] Modeling module 501 is used to perform simulation modeling of multiple components in the high-voltage assembly based on the high-voltage system topology corresponding to the high-voltage assembly to be tested, and obtain an initial assembly system model;

[0080] The first test module 502 is used to perform characteristic tests on the first voltage data of the high voltage assembly under nominal operating conditions using the initial assembly system model, and to obtain the first test result.

[0081] The adjustment module 503 is used to adjust the parameters of the initial assembly system model according to the first test results to obtain the target assembly system model;

[0082] The second test module 504 is used to perform characteristic tests on the second voltage data of the high voltage assembly under various test conditions using the target assembly system model, and to obtain the second test result.

[0083] The generation module 505 is used to generate target test results based on the first test results and the second test results, wherein the target test results are used to characterize the performance failure status of the high voltage assembly under various test conditions.

[0084] Optionally, the modeling module 501 is further used to: perform behavioral-level simulation modeling on multiple components in the high-voltage assembly to obtain multiple target component models; and perform system-level simulation modeling on the multiple target component models based on the high-voltage system topology to obtain an initial assembly system model.

[0085] Optionally, the multiple components include at least: a battery component, an electric drive component, a current conversion component, a temperature component, and a compressor component; the modeling module 501 is further configured to: model each of the multiple components using various behavioral-level modeling strategies to obtain at least one behavioral-level model corresponding to each component; combine the at least one behavioral-level model corresponding to each of the multiple components to obtain an initial component model corresponding to each of the multiple components; and perform simulation analysis and model adjustment on the initial component model corresponding to each of the multiple components according to preset component functional requirements to obtain a target component model corresponding to each of the multiple components.

[0086] Optionally, the adjustment module 503 is further configured to: adjust the model parameters of the initial assembly system model according to the first test results and the assembly system simulation indicators corresponding to the nominal operating conditions, so as to obtain the target assembly system model.

[0087] Optionally, the second test module 504 is further configured to: acquire second voltage data under various test conditions in real time through the acquisition device associated with the high voltage assembly; perform parameter scanning analysis on the high voltage assembly based on the second voltage data and the target assembly system model to obtain analysis results; and generate second test results in response to the analysis results reaching the preset modeling error conditions.

[0088] Optionally, in the above-mentioned voltage characteristic-based simulation test device, the multiple operating condition variables corresponding to various test conditions include: ambient temperature, vehicle speed, charging and discharging status, and air conditioning operating status.

[0089] Optionally, the second test module 504 is further configured to: input the second voltage data into the target assembly system model for parameter scanning analysis and obtain analysis results, wherein the analysis results include scanning analysis results for multiple voltage characteristic parameters, including: voltage offset parameter, voltage change rate parameter, and voltage load dump parameter.

[0090] Optionally, the generation module 505 is further configured to: compare and analyze the first test result and the second test result to obtain a comparison result, wherein the comparison result includes input data and output data of multiple components in the high voltage assembly under different voltage characteristics; and generate a target test result based on the comparison result and performance failure criteria.

[0091] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0092] According to another aspect of the present invention, a storage medium is also provided, the storage medium including a stored program, wherein, when the program is running, it controls the device where the storage medium is located to execute any of the aforementioned voltage characteristic-based simulation test methods.

[0093] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0094] S1. Based on the high-voltage system topology corresponding to the high-voltage assembly to be tested, multiple components in the high-voltage assembly are simulated and modeled to obtain the initial assembly system model.

[0095] S2, using the initial assembly system model, perform characteristic tests on the first voltage data of the high-voltage assembly under nominal operating conditions to obtain the first test result;

[0096] S3, Based on the first test results, adjust the parameters of the initial assembly system model to obtain the target assembly system model;

[0097] S4. Using the target assembly system model, the second voltage data of the high voltage assembly under various test conditions are used to perform characteristic tests and obtain the second test results.

[0098] S5. Based on the first test result and the second test result, generate the target test result, which is used to characterize the performance failure of the high-voltage assembly under various test conditions.

[0099] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing computer programs, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0100] According to another aspect of the present invention, an electronic device is also provided, including an on-board memory and an on-board processor, wherein the on-board memory stores a computer program, and the on-board processor is configured to run the computer program to execute the voltage characteristic-based simulation test method of any of the foregoing embodiments.

[0101] Optionally, in this embodiment, the on-board processor can be configured to perform the following steps via a computer program:

[0102] S1. Based on the high-voltage system topology corresponding to the high-voltage assembly to be tested, multiple components in the high-voltage assembly are simulated and modeled to obtain the initial assembly system model.

[0103] S2, using the initial assembly system model, perform characteristic tests on the first voltage data of the high-voltage assembly under nominal operating conditions to obtain the first test result;

[0104] S3, Based on the first test results, adjust the parameters of the initial assembly system model to obtain the target assembly system model;

[0105] S4. Using the target assembly system model, the second voltage data of the high voltage assembly under various test conditions are used to perform characteristic tests and obtain the second test results.

[0106] S5. Based on the first test result and the second test result, generate the target test result, which is used to characterize the performance failure of the high-voltage assembly under various test conditions.

[0107] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and their optional implementations, which will not be repeated here.

[0108] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0109] In the several embodiments provided by this invention, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection can be through some interfaces; the indirect coupling or communication connection of units or modules can be electrical or other forms.

[0110] The units described as separate components may or may not be physically separate. 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 units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0111] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0112] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0113] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A simulation test method based on voltage characteristics, characterized by, include: Based on the high-voltage system topology corresponding to the high-voltage assembly to be tested, simulation modeling is performed on multiple components in the high-voltage assembly to obtain an initial assembly system model; The initial assembly system model is used to perform characteristic tests on the first voltage data of the high voltage assembly under nominal operating conditions to obtain the first test result. Based on the first test results and the assembly system simulation indicators corresponding to the nominal operating conditions, the model parameters of the initial assembly system model are adjusted to obtain the target assembly system model; The second voltage data of the high voltage assembly under various test conditions are used to perform characteristic tests on the target assembly system model to obtain the second test results. The first test result and the second test result are compared and analyzed to obtain a comparison result, wherein the comparison result includes the input data and output data of multiple components in the high voltage assembly under different voltage characteristics; Based on the comparison results and performance failure criteria, target test results are generated, wherein the target test results are used to characterize the performance failure status of the high-voltage assembly under various test conditions.

2. The simulation testing method according to claim 1, characterized in that, Based on the high-voltage system topology corresponding to the high-voltage assembly, simulation modeling is performed on the multiple components in the high-voltage assembly to obtain the initial assembly system model, including: Behavioral-level simulation modeling was performed on multiple components in the high-voltage assembly to obtain multiple target component models; Based on the high-voltage system topology, system-level simulation modeling is performed on the multiple target component models to obtain the initial assembly system model.

3. The simulation testing method according to claim 2, characterized in that, The plurality of components includes at least: a battery component, an electric drive component, a current conversion component, a temperature component, and a compressor component; behavioral-level simulation modeling is performed on the plurality of components to obtain the plurality of target component models, including: Multiple behavioral-level modeling strategies are employed to model each of the multiple components, resulting in at least one behavioral-level model for each component. At least one behavioral-level model corresponding to each of the plurality of components is combined to obtain an initial component model corresponding to each of the plurality of components; According to the preset component function requirements, the initial component model corresponding to each of the multiple components is simulated and adjusted to obtain the target component model corresponding to each of the multiple components.

4. The simulation testing method according to claim 1, characterized in that, The second voltage data was subjected to characteristic testing using the target assembly system model, and the second test results were obtained, including: The second voltage data under various test conditions is collected in real time by the acquisition device associated with the high voltage assembly; Based on the second voltage data and the target assembly system model, a parameter scanning analysis is performed on the high-voltage assembly to obtain the analysis results; In response to the analysis results reaching the preset modeling error condition, the second test result is generated.

5. The simulation testing method according to claim 4, characterized in that, The various operating conditions corresponding to the multiple test conditions include: ambient temperature, vehicle speed, charging and discharging status, and air conditioning operating status.

6. The simulation testing method according to claim 5, characterized in that, Based on the second voltage data and the target assembly system model, a parameter scanning analysis is performed on the high-voltage assembly, and the analysis results include: The second voltage data is input into the target assembly system model for parameter scanning analysis to obtain the analysis results. The analysis results include scanning analysis results for multiple voltage characteristic parameters, including: voltage offset parameter, voltage change rate parameter, and voltage load dump parameter.

7. A simulation testing device based on voltage characteristics, characterized in that, include: The modeling module is used to perform simulation modeling of multiple components in the high-voltage assembly based on the high-voltage system topology corresponding to the high-voltage assembly to be tested, so as to obtain an initial assembly system model. The first test module is used to perform characteristic tests on the first voltage data of the high voltage assembly under nominal operating conditions using the initial assembly system model, and obtain the first test result. The adjustment module is used to adjust the model parameters of the initial assembly system model according to the first test results and the assembly system simulation indicators corresponding to the nominal operating conditions, so as to obtain the target assembly system model. The second test module is used to perform characteristic tests on the second voltage data of the high voltage assembly under various test conditions using the target assembly system model, and to obtain the second test result. A generation module is used to compare and analyze the first test result and the second test result to obtain a comparison result, wherein the comparison result includes input data and output data of multiple components in the high voltage assembly under different voltage characteristics; based on the comparison result and performance failure criteria, a target test result is generated, wherein the target test result is used to characterize the performance failure status of the high voltage assembly under various test conditions.

8. A vehicle, characterized in that, It includes an on-board memory and an on-board processor, wherein the on-board memory stores a computer program, and the on-board processor is configured to run the computer program to perform the voltage characteristic-based simulation test method according to any one of claims 1 to 6.

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