Vehicle simulation system and method

Abstract

The invention relates to a simulation system and method for a vehicle. The simulation system comprises a processing module and at least one component thermal management simulation module. Wherein the component heat management simulation module is used for determining air inlet related information of the component heat management simulation module based on operation information of a vehicle, environment information and state information of the component heat management simulation module; the energy consumption of the component heat management simulation module is determined and sent to the processing module based on the air inlet related information and the operation information of the component heat management simulation module; and the processing module is used for determining the energy consumption of the vehicle based on the energy consumption corresponding to each component heat management simulation module. According to the invention, external factors of the vehicle and internal factors of the vehicle can be coupled together, the influence of air intake related information on the energy consumption of the simulation module under different working conditions is restored, and the real environmental condition is simulated, so that the energy consumption of the vehicle is predicted more accurately.

Description

Technical Field

[0001] The present application relates to the field of automobile simulation technology, and in particular to a vehicle simulation system and method. Background Art

[0002] Evaluating vehicle energy consumption in a virtual environment through simulation is a key technical approach in modern automotive R&D. Simulation can replace physical testing, allowing for rapid verification and screening of multiple design solutions in parallel, significantly reducing material, processing, and testing costs while improving development efficiency. Therefore, accurately reproducing a vehicle's energy consumption performance under different operating conditions and enhancing the credibility of simulation results are pressing challenges. Summary of the Invention

[0003] One of the purposes of this application is to provide a vehicle simulation system to accurately restore real environmental conditions and simulate the impact of different environments on the energy consumption of the vehicle; the second purpose is to provide a vehicle simulation method.

[0004] This application provides a vehicle simulation system, which adopts the following technical solutions:

[0005] A vehicle simulation system includes a processing module and at least one component thermal management simulation module; wherein:

[0006] a component thermal management simulation module, configured to determine air intake-related information of the component thermal management simulation module based on vehicle operation information, environmental information, and status information of the component thermal management simulation module; and determine energy consumption of the component thermal management simulation module based on the air intake-related information and operation information of the component thermal management simulation module and transmit the information to the processing module;

[0007] The processing module is used to determine the energy consumption of the vehicle based on the energy consumption corresponding to each component thermal management simulation module.

[0008] According to the above technical means, first, based on the vehicle's operating information, environmental information and status information of the component thermal management simulation module, the air intake-related information of the component thermal management simulation module is determined, taking into account different climatic conditions and traffic environments, as well as the influence of the status information of the component thermal management simulation module on the air intake-related information of the component thermal management simulation module, thereby coupling the external factors of the vehicle with the internal factors of the vehicle, more accurately restoring the impact of different environments on the vehicle, and improving the credibility of the simulation results; secondly, based on the air intake-related information and operating information of the component thermal management simulation module, the energy consumption of the component thermal management simulation module is determined, and the energy consumption of the vehicle is determined based on the energy consumption corresponding to each component thermal management simulation module, restoring the influence of the air intake-related information on the energy consumption of the component thermal management simulation module under different working conditions, simulating real environmental conditions, and thus more accurately predicting the energy consumption of the vehicle.

[0009] Furthermore, the at least one component thermal management simulation module includes a cabin thermal management simulation module, the cabin thermal management simulation module includes a first cooling unit, the first cooling unit includes at least one air guide component, at least one fan and at least one grille; wherein:

[0010] The cabin thermal management simulation module is used to determine the air intake related information corresponding to at least one component thermal management simulation module based on the vehicle's operating information, the status data of the air guide component, the status data of the fan, the status data of the grille and the fan control strategy.

[0011] According to the above technical approach, by providing a cabin thermal management simulation module, air intake-related information corresponding to at least one component thermal management simulation module is determined based on vehicle operating information, status data of the vehicle's air guide components, fan status data, grille status data, and fan control strategy. This allows accurate simulation of air exchange between the vehicle and the external environment under different operating conditions, and further considers the impact of air intake-related information on heat dissipation by other component thermal management simulation modules, thereby improving the reliability of simulated energy consumption.

[0012] Furthermore, the at least one component thermal management simulation module includes an engine thermal management simulation module, which includes an engine block unit, a friction unit, a lubrication unit, and a second cooling unit; wherein:

[0013] The engine thermal management simulation module is used to determine the first heating value of the engine thermal management simulation module by simulating the engine body unit, friction unit, lubrication unit and second cooling unit; and determine the second heating value of the engine thermal management simulation module based on the first heating value and intake air related information.

[0014] Using these technical approaches, the first heat value generated by the engine thermal management simulation module during operation was determined. Furthermore, the second heat value was determined by further considering the impact of air intake information on the module's cooling performance. This approach determined the engine's energy consumption under different environments and road conditions, improving the reliability of the simulation results. Furthermore, it also circumvented the low accuracy of heat dissipation determined by the current MAP interpolation method, thereby improving the accuracy of the simulation results.

[0015] Furthermore, the simulation system also includes a vehicle power and economy simulation module; wherein:

[0016] The vehicle power and economy simulation module is used to determine the economy information and power information corresponding to at least one component thermal management simulation module based on the performance aging information and / or environmental attenuation information corresponding to at least one component thermal management simulation module.

[0017] Based on the above technical means, by constructing a vehicle dynamics and economy simulation module, the vehicle performance can be evaluated under various working conditions, and the impact of component aging and environmental factors on the vehicle's energy consumption is taken into account, thereby improving the accuracy and reliability of the simulation.

[0018] Furthermore, the simulation system also includes an actual road simulation module; wherein:

[0019] The actual road simulation module is used to determine the simulation route based on the starting point information and the end point information by querying the actual road map data set; and to determine the vehicle operation information at different times based on the simulation route, environmental information and road information.

[0020] According to the above technical means, a simulation route in a virtual environment is constructed through the actual road simulation module, and the three-dimensional simulation model of the vehicle is operated on the above simulation route. In combination with the environmental information and road information during the operation process, the transient vehicle operating speed at different times is quickly, simply and accurately generated, thereby improving the accuracy of the vehicle's energy consumption assessment.

[0021] Furthermore, the simulation system also includes a boundary control module; wherein:

[0022] The boundary control module is used to control the component thermal management simulation module to perform simulation when the temperature is within the upper limit and / or lower limit of the operating temperature range based on the operating temperature range corresponding to the component thermal management simulation module.

[0023] According to the above technical means, during the vehicle simulation process, the boundary control module is used to control the component thermal management simulation module to operate at the boundary of the operating temperature range, thereby comprehensively evaluating the vehicle's performance in extreme environments such as high and low temperatures, and further more accurately evaluating the vehicle's energy consumption.

[0024] Furthermore, the simulation system also includes a control strategy module; wherein:

[0025] The control strategy module is used to control the simulation process based on the vehicle performance control strategy and the control strategy corresponding to at least one component thermal management simulation module.

[0026] According to the above technical means, the control strategy module provides a control strategy for at least one component thermal management simulation module, controls the vehicle to simulate and determine the vehicle's energy consumption status under different environments and road conditions, thereby improving the plan in a targeted manner and reducing the energy consumption of the entire vehicle.

[0027] A vehicle simulation method is applied to a constructed simulation system, wherein the simulation system includes a processing module and at least one component thermal management simulation module; the method includes:

[0028] The component thermal management simulation module simulates and obtains air intake related information of the component thermal management simulation module based on the vehicle operation information and the status information of the component thermal management simulation module; and determines the energy consumption of the component thermal management simulation module based on the air intake related information and the operation information of the component thermal management simulation module and transmits the energy consumption to the processing module;

[0029] The processing module determines the energy consumption of the vehicle based on the energy consumption corresponding to each component thermal management simulation module.

[0030] According to the above technical means, first, based on the vehicle's operating information, environmental information and status information of the component thermal management simulation module, the air intake-related information of the component thermal management simulation module is determined, taking into account different climatic conditions and traffic environments, as well as the influence of the status information of the component thermal management simulation module on the air intake-related information of the component thermal management simulation module, thereby coupling the external factors of the vehicle with the internal factors of the vehicle, more accurately restoring the impact of different environments on the vehicle, and improving the credibility of the simulation results; secondly, based on the air intake-related information and operating information of the component thermal management simulation module, the energy consumption of the component thermal management simulation module is determined, and the energy consumption of the vehicle is determined based on the energy consumption corresponding to each component thermal management simulation module, restoring the influence of the air intake-related information on the energy consumption of the component thermal management simulation module under different working conditions, simulating real environmental conditions, and thus more accurately predicting the energy consumption of the vehicle.

[0031] Furthermore, before the component thermal management simulation module simulates and obtains the air intake related information of the component thermal management simulation module based on the vehicle operation information and the status information of the component thermal management simulation module, the method further includes:

[0032] At least one component thermal management simulation module obtains corresponding performance parameters and working boundary parameters.

[0033] According to the above technical means, each component thermal management simulation module obtains corresponding performance parameters and working boundary parameters, so that it can accurately simulate working conditions and environmental conditions under various boundary conditions, saving R&D costs and shortening the R&D cycle.

[0034] Furthermore, the simulation system also includes a vehicle power and economy simulation module; the method further includes:

[0035] The vehicle power and economy simulation module is calibrated based on first data, where the first data includes vehicle power and economy data under a preset working condition;

[0036] At least one component thermal management simulation module is calibrated based on second data, the second data including thermal management data of the entire vehicle or test bench;

[0037] The simulation system is calibrated based on third data, which includes actual road test data.

[0038] According to the above technical means, part or the whole of the vehicle simulation system is calibrated in sequence based on the first data, the second data and the third data, thereby improving the credibility and reliability of the simulation results output by the vehicle simulation system.

[0039] Beneficial effects of this application:

[0040] (1) Based on the vehicle's operating information, environmental information, and the status information of the component thermal management simulation module, the air intake-related information of the component thermal management simulation module is determined, taking into account different climatic conditions and traffic environments, as well as the influence of the status information of the component thermal management simulation module on the air intake-related information of the component thermal management simulation module, thereby coupling the external factors of the vehicle with the internal factors of the vehicle, more accurately restoring the impact of different environments on the vehicle, and improving the credibility of the simulation results.

[0041] (2) Based on the air intake related information and operation information of the component thermal management simulation module, the energy consumption of the component thermal management simulation module is determined, and the energy consumption of the vehicle is determined based on the energy consumption corresponding to each component thermal management simulation module. The influence of the air intake related information on the energy consumption of the component thermal management simulation module under different working conditions is restored, and the real environmental conditions are simulated to more accurately predict the energy consumption of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of the structure of a vehicle simulation system provided in an embodiment of the present application Figure 1 ;

[0043] Figure 2 A schematic diagram of the structure of a vehicle simulation system provided in an embodiment of the present application Figure 2 ;

[0044] Figure 3 A schematic diagram of the structure of a cabin thermal management simulation module provided in an embodiment of the present application;

[0045] Figure 4 A schematic diagram of a vehicle simulation method provided in an embodiment of the present application Figure 1 ;

[0046] Figure 5 A schematic diagram of a vehicle simulation method provided in an embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0047] The following will describe the embodiments of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand the other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for the purpose of illustrating the present application and are not intended to limit the scope of protection of the present application.

[0048] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. Therefore, the illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0049] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0050] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0052] In the automotive sector, vehicle energy consumption has always been a focus of attention for both the industry and consumers. With the continuous growth of global energy demand and increasing awareness of environmental protection, optimizing and controlling vehicle energy consumption has become particularly important.

[0053] Although there are some current research and technological improvements targeting vehicle energy consumption, most of these methods are conducted using real vehicles under regulatory operating conditions such as the World Light Vehicle Test Cycle (WLTC), the China Light Vehicle Test Cycle (CLTC), and the New European Driving Cycle (NEDC). Actual road testing is affected by factors such as environmental conditions and the actual vehicle's test equipment, resulting in inaccurate energy consumption information and limitations. This can easily lead to a situation where a vehicle exhibits good energy consumption performance under regulatory conditions but experiences an abnormal increase in vehicle energy consumption under actual road conditions. Furthermore, traditional testing methods are costly and time-consuming, making them difficult to meet the demands of rapid automotive development.

[0054] Therefore, the use of simulation technology to evaluate vehicle energy consumption in a virtual environment has become increasingly widespread. Simulation technology can simulate a vehicle's energy consumption under different operating conditions. Replacing physical testing with simulation not only avoids repeated prototype production, significantly reducing material, processing, and testing costs, but also allows for uninterrupted operation without the need for physical testing sites or equipment, significantly improving development efficiency. Furthermore, simulation technology can verify multiple design options in parallel, quickly selecting the optimal one and shortening the vehicle verification process.

[0055] Therefore, in the vehicle simulation process, how to restore the energy consumption performance of the vehicle in actual use under complex and changing environmental conditions and improve the reliability of the simulation results are issues that need to be solved urgently.

[0056] Based on this, an embodiment of the present application provides a vehicle simulation system and method. First, based on the vehicle's operating information, environmental information and status information of the component thermal management simulation module, the air intake-related information of the component thermal management simulation module is determined, taking into account different climatic conditions and traffic environments, as well as the influence of the status information of the component thermal management simulation module on the air intake-related information of the component thermal management simulation module, thereby coupling the external factors of the vehicle with the internal factors of the vehicle, more accurately restoring the impact of different environments on the vehicle, and improving the credibility of the simulation results; secondly, based on the air intake-related information and operating information of the component thermal management simulation module, the energy consumption of the component thermal management simulation module is determined, and the energy consumption of the vehicle is determined based on the energy consumption corresponding to each component thermal management simulation module, restoring the influence of the air intake-related information on the energy consumption of the component thermal management simulation module under different working conditions, simulating real environmental conditions, and thus more accurately predicting the energy consumption of the vehicle.

[0057] Below, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application.

[0058] The method provided in the embodiments of the present application can be executed by an electronic device, which can be various types of terminals such as laptop computers, tablet computers, desktop computers, vehicle terminals, set-top boxes, mobile devices (for example, mobile phones, portable music players, personal digital assistants, dedicated messaging devices, portable gaming devices), etc., and can also be implemented as a server. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (CDNs), and big data and artificial intelligence platforms.

[0059] In one embodiment of the present application, Figure 1 A schematic diagram of the structure of a vehicle simulation system provided in an embodiment of the present application Figure 1 .like Figure 1 As shown, the vehicle simulation system 10 includes a processing module 102 and at least one component thermal management simulation module; wherein:

[0060] the component thermal management simulation module is configured to determine air intake related information of the component thermal management simulation module based on the vehicle's operating information, environmental information, and status information of the component thermal management simulation module; and determine energy consumption of the component thermal management simulation module based on the air intake related information and operating information of the component thermal management simulation module and transmit the information to the processing module 102;

[0061] The processing module 102 is configured to determine the energy consumption of the vehicle based on the energy consumption corresponding to each component thermal management simulation module.

[0062] In an embodiment of the present application, the vehicle simulation system may include a whole-vehicle thermal management simulation model, wherein the components in the vehicle can be modeled as three-dimensional models based on the vehicle's cooling principle diagram and spatial layout relationship, and then a pipeline model can be constructed based on the connection relationship between the three-dimensional models, the actual pipeline direction and the coolant flow sequence, and the modeled components can be connected and the flow direction can be defined to obtain the whole-vehicle thermal management simulation model.

[0063] Among them, the vehicle thermal management simulation model includes at least one component thermal management simulation module, such as Figure 1Component thermal management simulation module 1 1011, component thermal management simulation module 2 1012, ..., component thermal management simulation module N 1013, wherein each component thermal management simulation module can be a module that simulates components in the vehicle's engine compartment area, passenger compartment area, trunk area, underfloor area including suspension, and other areas, as well as thermal management and thermal control related functions, and includes a module that simulates the connection relationships between components, so that the three-dimensional vehicle simulation model composed of at least one component thermal management simulation module can simulate the energy consumption of actual vehicle operation under various operating conditions and environmental conditions. Depending on the component thermal management simulation module, the composed three-dimensional vehicle simulation model can simulate a new energy pure electric vehicle, a fuel vehicle, or a hybrid vehicle.

[0064] In an embodiment of the present application, after constructing at least one component thermal management simulation module, the three-dimensional simulation module can be discretized into a one-dimensional simulation analysis model, wherein the one-dimensional simulation analysis module can refer to a one-dimensional simulation analysis model composed of a parametric model of a component or system simulated by the component thermal management simulation module, and the parametric model can be composed of theoretical formulas, simulation formulas, empirical formulas, etc.

[0065] It should be noted that the vehicle's operating information may include the vehicle's speed, the vehicle's operating conditions and road conditions, etc.; environmental information may include weather conditions, air temperature, humidity, etc.; the status information of the component thermal management simulation module may include the structural shape status of the component thermal management simulation module, the spatial position of each component, etc.; the air intake related information may include the air intake speed, air intake temperature, air intake humidity and other related information entering the thermal management simulation module of each component; the operating information of the component thermal management simulation module may include the operating status and working mode of the component thermal management simulation module.

[0066] In an embodiment of the present application, when simulating a vehicle, a three-dimensional simulation model of the vehicle is run in a virtual environment. Under different virtual environments and different operating conditions of the vehicle, the air intake-related information of the thermal management simulation module of each component is determined in real time through a one-dimensional analysis model, and the air side flow conditions of the thermal management simulation module of each component are calculated, thereby avoiding the problems of low precision and high workload of the MAP difference method.

[0067] Furthermore, for different component thermal management simulation modules, the air intake related information has different effects on the energy consumption of their component thermal management simulation modules. For example, for component thermal management simulation modules corresponding to components such as air conditioners and engines, the atomization effect of the fuel will deteriorate when the temperature is low, and it may cause engine failure when the temperature is high. Therefore, the temperature has a greater impact on these component thermal management simulation modules, and the air intake related information affects the cooling and heat dissipation efficiency of these component thermal management simulation modules, thereby having a greater impact on energy consumption. For component thermal management simulation modules corresponding to components such as steering wheels and seats, the air intake related information has less impact on these component thermal management simulation modules, thereby having less impact on energy consumption. Therefore, each component thermal management simulation module can use its air intake related information and operating information as input parameters of the corresponding one-dimensional simulation analysis model to determine the energy consumption corresponding to each component thermal management simulation module.

[0068] In an embodiment of the present application, the processing module 102 can be a unit with computing and processing functions such as a vehicle chip, a microcontroller unit (MCU), a system-on-chip (SoC), etc. The processing module 102 is connected to at least one component thermal management simulation module to control the energy flow and conversion between the component thermal management simulation modules, and according to the energy consumption of at least one component thermal management simulation module in the vehicle simulation system, couple the energy consumption of at least one component thermal management simulation module to determine the energy consumption of the entire vehicle, thereby realizing local to overall energy management.

[0069] An embodiment of the present application provides a vehicle simulation system. First, based on the vehicle's operating information, environmental information and status information of the component thermal management simulation module, the air intake-related information of the component thermal management simulation module is determined, taking into account different climatic conditions and traffic environments, as well as the influence of the status information of the component thermal management simulation module on the air intake-related information of the component thermal management simulation module, thereby coupling the external factors of the vehicle with the internal factors of the vehicle, more accurately restoring the influence of different environments on the vehicle, and improving the credibility of the simulation results; secondly, based on the air intake-related information and operating information of the component thermal management simulation module, the energy consumption of the component thermal management simulation module is determined, and the energy consumption of the vehicle is determined based on the energy consumption corresponding to each component thermal management simulation module, restoring the influence of the air intake-related information on the energy consumption of the component thermal management simulation module under different working conditions, simulating real environmental conditions, and thus more accurately predicting the energy consumption of the vehicle.

[0070] In some embodiments, as Figure 2As shown, at least one component thermal management simulation module includes a cabin thermal management simulation module 209, and the cabin thermal management simulation module 209 includes a first cooling unit, and the first cooling unit includes at least one air guide component, at least one fan, and at least one grille; wherein:

[0071] The cabin thermal management simulation module 209 is used to determine the air intake related information corresponding to at least one component thermal management simulation module based on vehicle operation information, status data of the air guide component, status data of the fan, status data of the grille and fan control strategy.

[0072] In this embodiment of the present application, the cabin thermal management simulation module 209 can be used to simulate a vehicle in operation and calculate air flow conditions on the air side. It can calculate air intake information such as the air intake speed and air intake temperature for each component thermal management simulation module in real time based on vehicle speed and fan speed. Specifically, the first cooling unit can be used to simulate components of the vehicle that exchange airflow with the external environment.

[0073] In the embodiments of this application, Figure 3 As shown, the cabin thermal management simulation module 209 includes a first cooling unit, which includes at least one air guide component, at least one fan and at least one grille, wherein the status data of the air guide component may include the structural shape of the air guide component, the setting position, size, air guide direction, etc. in the simulation model of the vehicle; the status data of the fan may include the relative position relationship between the fan and the air guide component, the grille, and the thermal management simulation modules of other components, the speed and size of the fan, etc.; the status data of the grille may include the opening shape, area size, opening and closing degree, and the relative position relationship with the thermal management simulation modules of other components, etc.

[0074] like Figure 3 As shown, the grille 301 determines the wind speed, air volume, temperature and other related information entering the grille during operation of the vehicle based on the status data, and transmits it to the air guide component 302. Multiple air guide components can be set, such as air guide component 1 3021, air guide component 2 3022, air guide component 3 3023, air guide component 4 3024, air guide component 5 3025, air guide component 6 3026, air guide component 7 3027, air guide component 8 3028, etc. These air guide components can be set at different positions in the cabin thermal management simulation module. The processing module determines the air intake related information of the thermal management simulation modules of each component based on the positional relationship between the thermal management simulation modules of other components and these air guide plates and fans. Among them, the fan 303 is controlled by the corresponding fan control unit 3031.

[0075] It should be noted that other different component thermal management simulation modules may also include radiators, such as condensers, low-temperature radiators, high-temperature radiators, oil-cooled radiators, etc. These components are set in the cabin as cooling components, and the cabin thermal management simulation module manages and simulates the air intake related information of the thermal management simulation modules of these components with radiators.

[0076] It should also be noted that the fan control strategy can be transmitted by the above-mentioned processing module to the cabin thermal management simulation module 209, and the operating strategy can be adjusted in real time based on the working status of the thermal management simulation modules of other components. It is used to control the fan's opening and closing, wind speed, working mode and other status data. It can also be used to control the status data of simulation components such as grilles and air guides to adapt to changes.

[0077] In this embodiment of the present application, the three-dimensional structure constructed based on the status data of the air guide components, fan, and grille in the cabin thermal management simulation module 209, for example, including the shape of the vehicle grille opening, the shape of the air guide structure of the component thermal management simulation module, and the arrangement relationship between the component thermal management simulation module and the fan, is directly discretized into a one-dimensional analysis model. The status data of the air guide components, fan, and grille, the relative positional relationship between the grille and the radiator in different component thermal management simulation modules, the relative positional relationship between the fan and different component thermal management simulation modules, and the fan speed control strategy can all be directly represented in the one-dimensional analysis model corresponding to the cabin thermal management simulation module 209.

[0078] In an embodiment of the present application, since the one-dimensional analysis model of the cabin thermal management simulation module 209 contains detailed three-dimensional geometric information and fan control strategy, the cabin thermal management simulation module can accurately calculate the vehicle's air intake related information under different vehicle operating information, different fan status data, different grille status data, different fan status data, and different fan control strategies based on the status data of the air guide components in the first cooling unit, the status data of the fan, and the status data of the grille, as well as the vehicle's operating information and fan control strategy. Further, the air intake related information such as the air intake speed and air intake temperature of each component's thermal management simulation module can be determined based on the relative position relationship between the thermal management simulation module of each component and the first cooling unit.

[0079] It should also be noted that when the grille structure or size, cooling module structure and performance, or fan structure and performance change, there is no need to re-perform geometric modeling, meshing, multi-vehicle speed and multi-fan speed calculation, and other wind speed and air temperature MAP preparation work in the three-dimensional cabin analysis model in the application embodiment. Instead, the setting parameters can be adaptively adjusted in the one-dimensional analysis model of the cabin thermal management simulation module, and the adjusted results can be quickly obtained within minutes, which shortens the time cycle.

[0080] An embodiment of the present application provides a vehicle simulation system that, by providing a cabin thermal management simulation module, determines air intake-related information corresponding to at least one component thermal management simulation module based on vehicle operating information, status data of the vehicle's air guide components, fan status data, grille status data, and fan control strategies. This system accurately simulates the air exchange between the vehicle and the external environment under different operating conditions, further considering the impact of air intake-related information on the heat dissipation of other component thermal management simulation modules, thereby improving the credibility of the simulated energy consumption.

[0081] In some embodiments, as Figure 2 As shown, at least one component thermal management simulation module includes an engine thermal management simulation module 207, and the engine thermal management simulation module 207 includes an engine block unit, a friction unit, a lubrication unit, and a second cooling unit; wherein:

[0082] The engine thermal management simulation module 207 is used to determine the first heating value of the engine thermal management simulation module 207 by simulating the engine body unit, friction unit, lubrication unit and second cooling unit; and to determine the second heating value of the engine thermal management simulation module 207 based on the first heating value and intake air related information.

[0083] In an embodiment of the present application, the engine thermal management simulation module 207 includes an engine body unit, a friction unit, a second cooling unit, a lubrication unit, etc., which are respectively used for the engine body and related components, as well as the friction between the piston ring and the cylinder wall, the crankshaft journal and the bearing when the engine is working, the lubrication of grease between the piston and the cylinder, the main shaft and the bearing, the cooling of the engine, and can also include simulation of shock absorption and other aspects.

[0084] like Figure 2 As shown, since the engine block unit 2011 also provides energy for the air conditioning simulation module 206 and other component thermal management simulation modules, Figure 2 The engine block unit 2011 in the engine thermal management simulation module 207 is shown separately, and based on the type of vehicle, the generator unit 2012 is optionally constructed, and the relationship between the engine block unit 2011 and the generator unit 2012 is adaptively constructed.

[0085] In the case where the simulated vehicle is a hybrid vehicle, the driving motor unit 2013 can provide kinetic energy for the simulated vehicle model 202 .

[0086] It should be noted that the constructed engine thermal management simulation module 207, including the three-dimensional structure of the cylinder block and cylinder head water jacket and the three-dimensional solid structure of the cylinder block and cylinder head, can be discretized into a one-dimensional analysis model and connected with the friction unit, the second cooling unit, the lubrication unit, etc., to simulate the first heating value of the engine under different working conditions, including directly calculating the heating value of the engine water jacket, intercooler, and supercharger under any working condition and any environment based on the engine block unit and the friction unit. When calculating the heat of the engine water jacket, the heat exchange process of the water jacket absorbing heat from the cylinder jacket, the heat exchange between the solid wall of the cylinder block and cylinder head and the external environment, the friction heat of the piston skirt, the friction heat of the main bearing and the connecting rod, the friction heat of the valve mechanism, the heat exchange between the oil channel and the cylinder and the oil channel wall, and the heat exchange between the oil pan and the external environment are comprehensively considered, so as to simulate and determine the first heating value generated by the engine under the corresponding working condition.

[0087] The first calorific value is correlated with the efficiency, heat exchange performance, cooling performance, friction heat, and lubrication performance of the engine.

[0088] In an embodiment of the present application, during a simulation, as a three-dimensional simulation model of a vehicle travels within a virtual environment, air strikes the vehicle's head, partially entering through the grille at the vehicle's head. Air then flows through air deflectors and fans, then to multiple component thermal management simulation modules within the vehicle, including the engine thermal management simulation module 207, before exiting, achieving heat dissipation and cooling. Therefore, based on the air intake-related information described in the aforementioned embodiment, as well as the relative positional relationship between the air deflectors, fans, and grilles within the engine thermal management simulation module and the aforementioned cabin thermal management simulation module, a second heat output is determined based on the first heat output, based on the cooling effect of the intake air temperature, intake air velocity, and other factors on the engine after the vehicle exchanges air with the outside air under the corresponding operating conditions. Furthermore, based on the second heat output and relevant engine operating parameters, the energy consumption of the engine and its associated components can be determined.

[0089] In this embodiment, the first heating value generated by the engine thermal management simulation module 207 during operation is determined. Furthermore, the second heating value is determined by taking into account the impact of air intake-related information on the cooling performance of the engine thermal management simulation module. This allows the determination of engine energy consumption under different environments and road conditions, improving the reliability of the simulation results. Furthermore, this method avoids the low accuracy associated with the current use of the MAP interpolation method to determine heat dissipation, thereby improving the accuracy of the simulation results.

[0090] It should also be noted that if Figure 2As shown, at least one component thermal management simulation module may also include a battery thermal management simulation module 205, a motor electronic control thermal management simulation module (including a water-cooled motor electronic control thermal management simulation unit 2010 and a water-cooled motor electronic control thermal management simulation unit 2011), a passenger compartment thermal management simulation module 208, an air conditioning simulation module 206, and other simulation modules obtained by simulating vehicle components, which are not listed here one by one.

[0091] The battery thermal management simulation module 205 mainly includes the battery pack unit 2051, a water pump, a chiller module, a positive temperature coefficient (PTC) heater, and pipelines.

[0092] Among them, the main components of the motor and electronic control thermal management simulation module include motor, electronic control, radiator, DCDC converter, water pump, pipeline, etc.

[0093] Among them, the main components of the passenger compartment thermal management simulation module 208 include doors, floors, dashboards, seats, windows, roofs, rear panels, side panels, etc.

[0094] Among them, the main components of the air conditioning simulation module 206 include a compressor, a radiator, an expansion valve, a condenser, a heat pump, etc.

[0095] For the above-mentioned passenger compartment thermal management simulation module 208 and air conditioning simulation module 206, the driver model 203 can also be considered during modeling, including the impact of the driver's body shape, body temperature, weight and other parameters on vehicle energy consumption.

[0096] In an embodiment of the present application, referring to the aforementioned energy consumption determination process of the engine and related components, in the process of determining the energy consumption of the thermal management simulation module of each component, factors such as the air exchange between the vehicle and the external environment under the corresponding working conditions, and the relative position relationship between the thermal management simulation module of each component and the air guide component, fan and grille can also be considered.

[0097] In some embodiments, the simulation system further includes a boundary control module; wherein:

[0098] The boundary control module is used to control the component thermal management simulation module to perform simulation when the temperature is within the upper limit and / or lower limit of the operating temperature range based on the operating temperature range corresponding to the component thermal management simulation module.

[0099] It should be noted that when a vehicle is driving on an actual road, high and low temperature environments have a significant impact on energy consumption. In a high temperature environment, the cooling load of the air-conditioning system increases, and the heat dissipation demand of the engine increases, resulting in increased energy consumption. In a low temperature environment, the atomization effect of the fuel deteriorates, the engine is difficult to start, the combustion efficiency is reduced, and the energy consumption of the vehicle will also increase. For electric vehicles, low temperatures will affect the activity of the battery, resulting in a decrease in battery capacity, a decrease in discharge capacity, and a shortened cruising range. Therefore, high and low temperature working environments have a certain impact on the energy consumption of the vehicle. In the embodiment of the present application, the boundary control module is used to comprehensively and accurately obtain the energy consumption of the entire vehicle and each system under various high and low temperature working conditions, so that the hardware and control strategy can be optimized in a targeted manner.

[0100] In an embodiment of the present application, the processing module can set boundary parameters for the thermal management simulation modules of each component in the aforementioned vehicle thermal management system model, and store them in the boundary control module. The configured boundary parameters may include: boundary conditions corresponding to each component such as the engine, battery, motor, and electronic control, such as the operating temperature range, including the maximum allowable temperature (also called the upper limit temperature) and the minimum allowable temperature (also called the lower limit temperature), ambient temperature, passenger compartment, initial coolant temperature, etc.

[0101] It should be noted that the boundary control module can control the working status of the thermal management simulation modules of each component and the energy consumption of the vehicle under various extreme temperature conditions simulated in a virtual environment. For example, the energy consumption of components such as the engine, air conditioner, and battery when working at the upper or lower temperature limits, as well as the lubrication performance and starting performance of the vehicle at the lower temperature limit.

[0102] Among them, whether the thermal management simulation module of each component is in an extreme temperature condition is correlated with the thermal management simulation modules of other components, such as the air exchange between the vehicle and the external environment.

[0103] In an embodiment of the present application, based on the simulation results under the vehicle's upper and lower temperature limits, the vehicle's thermal management-related modules, such as the heat dissipation area and the layout of the thermal management simulation modules of each component, can be optimized, and the materials and structures of each component can be adaptively adjusted to reduce the vehicle's energy consumption.

[0104] In an embodiment of the present application, during the simulation process of the vehicle, the boundary control module is used to control the thermal management simulation modules of each component to operate at the boundary of the operating temperature range, thereby comprehensively evaluating the performance of the vehicle in extreme environments such as high temperature and low temperature, and further more accurately evaluating the energy consumption of the vehicle.

[0105] In some embodiments, as Figure 2 As shown, the simulation system also includes a vehicle power and economy simulation module;

[0106] The vehicle power and economy simulation module is used to determine the economy information and power information corresponding to each of the at least one component thermal management simulation modules based on the performance aging information and / or environmental attenuation information corresponding to each of the at least one component thermal management simulation modules.

[0107] In this embodiment of the present application, the vehicle's energy consumption can be determined based on the energy consumption of at least one component thermal management simulation module within the aforementioned vehicle power and economy simulation model. The vehicle power and economy simulation module configures the power efficiency and load of each component thermal management simulation module under different operating conditions, as well as the transmission efficiency, energy conversion efficiency, recovery efficiency, and shifting operation between the component thermal management simulation modules.

[0108] In an embodiment of the present application, during the above-mentioned simulation of the vehicle's energy consumption, the performance aging information of the component thermal management simulation module, such as the impact of the aging degree of the component on the economy and power of the vehicle simulation, can be taken into account, such as the aging performance parameters of the engine, motor electronic control, and battery measured or empirically estimated, and / or environmental attenuation information, such as the performance parameters of attenuation in high-altitude areas, high-temperature environment, high-pressure environment and other factors that affect the economy and power of the vehicle simulation, and filled in the vehicle power economy simulation module to simulate the economy and power of the vehicle under different conditions.

[0109] In the embodiments of this application, the vehicle power and economy simulation module can be used to calculate the vehicle's power and economy at room temperature, and can also be used to determine the vehicle's power and economy under the aforementioned extreme operating conditions. Vehicle power includes acceleration, maximum speed, and gradeability, while vehicle economy includes fuel consumption, power consumption rate, and range at room temperature.

[0110] In an embodiment of the present application, the vehicle power and economy simulation module may include a fast vehicle module, a driver unit, a power and transmission system unit, etc.

[0111] Among them, the modeling of the vehicle power and economy simulation module is simple and convenient, and can make a quick preliminary evaluation of the economy and power of the power architecture technical solution.

[0112] In the embodiment of the present application, by constructing a vehicle dynamics and economy simulation module, the performance of the vehicle can be evaluated under various working conditions, and the impact of component aging and environmental factors on the vehicle's energy consumption is taken into account, thereby improving the accuracy and reliability of the simulation.

[0113] In some embodiments, as Figure 2 As shown, the simulation system further includes an actual road simulation module 204; wherein:

[0114] The actual road simulation module 204 is used to determine a simulation route based on the starting point information and the end point information by querying the actual road map dataset; and to determine the operation information of the vehicle at different times based on the simulation route, environmental information and road information.

[0115] In the embodiment of the present application, the simulated route is obtained by the actual road simulation module 204 by querying the actual road map dataset based on any starting point and end point, including the starting point position, end point position, and route.

[0116] Among them, the actual road atlas can be actual road three-dimensional information about the geometric shape, lane lines, traffic signs, greening, etc. of the actual road obtained by using laser radar, drone and other photography technologies.

[0117] The environmental information may include weather information, temperature information, humidity information, etc. around the simulation line.

[0118] Among them, road information may include whether there is a highway, the length of time to stop at an intersection, the length of time to stop at a traffic light, the slope, curvature, vehicle density, speed distribution, dynamic obstacles such as pedestrians on the route, surveillance cameras, road regulations and speed limits, etc.

[0119] In an embodiment of the present application, a simulation route in a virtual environment is constructed through the actual road simulation module 204, so that the three-dimensional simulation model of the vehicle runs on the above simulation route, and combined with the environmental information and road information during the operation process, the transient vehicle running speed at different times is quickly, simply and accurately generated, thereby improving the accuracy of the vehicle's energy consumption assessment.

[0120] In some embodiments, the simulation system further includes a control strategy module 2012; wherein:

[0121] The control strategy module 2012 is used to control the simulation process based on the vehicle performance control strategy and the control strategy corresponding to at least one component thermal management simulation module.

[0122] In an embodiment of the present application, the control strategy module 2012 includes at least one control unit, which corresponds to the vehicle performance control strategy, engine control strategy, battery control strategy, motor and electronic control strategy, air-conditioning system control strategy, etc., and is used to control and adjust the status information and operation information of the thermal management simulation modules of each component during the simulation of the vehicle, so as to perform simulation under the required working conditions.

[0123] In an embodiment of the present application, a control strategy module is used to provide a control strategy for at least one component thermal management simulation module, and the vehicle is controlled to simulate and determine the energy consumption status of the vehicle under different environments and road conditions, thereby improving the solution in a targeted manner and reducing the energy consumption of the entire vehicle.

[0124] In another embodiment of the present application, a vehicle simulation method is provided. The method can be applied to the vehicle simulation system constructed above. The simulation system can include a processing module and at least one component thermal management simulation module, such as Figure 4 As shown, the method may include:

[0125] In an embodiment of the present application, a simulation system as in the aforementioned embodiment can be first constructed. The simulation system includes a vehicle power and economy simulation module, an actual road simulation module, a boundary control module, a control strategy module, and at least one component thermal management simulation module, etc. The construction process and the functions of each module refer to the description in the aforementioned embodiment.

[0126] S401, the component thermal management simulation module simulates and obtains the air intake related information of the component thermal management simulation module based on the vehicle operation information and the status information of the component thermal management simulation module; and based on the air intake related information and operation information of the component thermal management simulation module, determines the energy consumption of the component thermal management simulation module and sends it to the processing module.

[0127] S402: The processing module determines the energy consumption of the vehicle based on the energy consumption corresponding to each component thermal management simulation module.

[0128] In some embodiments, in the aforementioned step S401, before the component thermal management simulation module simulates and obtains the air intake related information of the component thermal management simulation module based on the operating information of the vehicle and the status information of the component thermal management simulation module, the method further includes:

[0129] The at least one component thermal management simulation module obtains corresponding performance parameters and working boundary parameters.

[0130] After constructing the vehicle simulation system as mentioned above, the performance parameters corresponding to each component thermal management simulation module can be input into the vehicle simulation system. Among them, for the vehicle power and economy simulation module, the input performance parameters may include: engine universal characteristic curve, motor performance MAP diagram, battery performance MAP diagram, gearbox gear and speed ratio, vehicle coasting resistance curve, transmission system structure, etc.; for the cabin thermal management simulation module, the input performance parameters may include: cabin three-dimensional structure, flow resistance characteristics and heat transfer performance of each cooling module, fan speed and air volume performance; the performance parameters input into the engine thermal management simulation module may include: engine body three-dimensional structure, geometric characteristic parameters of cylinder, cylinder block, cylinder head, piston, oil pan heat transfer boundary and oil filling amount, temperature and heat transfer coefficient of cylinder block, cylinder head, piston, valve, airway, Friction Mean Effective Pressure (Friction Mean Effective Pressure Pressure, FMEP) parameters, water pump and oil pump performance, flow resistance characteristics and heat transfer performance of high-temperature radiator and refrigerator (Chiller), etc.; for the battery thermal management simulation module, the input performance parameters may include: battery heat generation, water pump performance, Chiller, radiator flow resistance characteristics and heat transfer performance, etc.; for the motor electronic control thermal management simulation module, the input performance parameters may include: motor electronic control heat generation, water pump performance, radiator flow resistance characteristics and heat transfer performance, etc.; for the passenger compartment thermal management simulation module, the input performance parameters may include: physical parameters and heat transfer area of each component, heat transfer coefficients between each component and external air and internal air, thermal radiation parameters of internal and external air, etc.; for the air conditioning simulation module, the input performance parameters may include: performance of components such as compressor, blower, expansion valve, Chiller, passenger compartment cooling heat demand, and battery thermal management system heat dissipation demand.

[0131] Furthermore, the operating boundary parameters corresponding to each component thermal management simulation module are input into the vehicle simulation system. For the vehicle power and economy simulation module, the input operating boundary parameters may include: vehicle mass, vehicle windage, vehicle sliding resistance, the vehicle's actual operating start and end points, traffic congestion, ambient temperature, etc. For at least one component thermal management simulation module in the vehicle thermal management simulation model, the input operating boundary parameters may include: the maximum and minimum temperature requirements for each component, such as the engine, battery, motor, and electronic control, as well as the ambient temperature, passenger compartment temperature, and initial coolant temperature.

[0132] In some embodiments, the simulation system further includes a vehicle power and economy simulation module; and the method further includes:

[0133] S501, a vehicle power and economy simulation module is calibrated based on first data, where the first data includes vehicle power and economy data under a preset working condition.

[0134] In an embodiment of the present application, first data is first obtained, including vehicle power and economy data of actual test WLDC, CLTC, NEDC and other regulatory conditions. The vehicle power and economy simulation module calibrates and adjusts parameters based on the first data to ensure the accuracy of the simulation system under normal temperature regulatory conditions.

[0135] S502 , calibrating at least one component thermal management simulation module based on second data, where the second data includes thermal management data of the entire vehicle or test bench.

[0136] Furthermore, second data is obtained, including flow, temperature, flow resistance data of each thermal management system of the whole vehicle or bench test, and the thermal management simulation modules of each component in the whole vehicle thermal management system model are calibrated one by one based on the second data, and the parameters are adjusted to ensure the accuracy of the thermal management simulation modules of each component.

[0137] S503 , the simulation system is calibrated based on third data, where the third data includes actual road test data.

[0138] In an embodiment of the present application, the actual road simulation module, the vehicle power and economy simulation module, the vehicle thermal management simulation model, and the control strategy module are combined to form a complete vehicle simulation system, and the third data is obtained. The vehicle simulation system is calibrated according to the third data and the parameters are adjusted.

[0139] The third data may include actual road test data.

[0140] In an embodiment of the present application, after the vehicle simulation system is calibrated based on the aforementioned steps, the calibrated simulation system can simulate the vehicle operation conditions on any actual road, obtain the heating pattern and maximum temperature of each system, the energy consumption of each component and the energy consumption of the entire vehicle, study the sensitivity of each component and each control strategy to energy consumption, and improve the hardware architecture and control strategy design of the entire vehicle.

[0141] In some embodiments, the method further comprises:

[0142] The cabin thermal management simulation module determines the air intake related information corresponding to at least one component thermal management simulation module based on vehicle operation information, status data of the air guide component, status data of the fan, status data of the grille and fan control strategy.

[0143] In some embodiments, the method further comprises:

[0144] The engine thermal management simulation module determines the first heating value of the engine thermal management simulation module by simulating the engine body unit, friction unit, lubrication unit and second cooling unit; and determines the second heating value of the engine thermal management simulation module based on the first heating value and intake air related information.

[0145] In some embodiments, the method further comprises:

[0146] The vehicle power and economy simulation module determines the economy information and power information corresponding to at least one component thermal management simulation module based on the performance aging information and / or environmental attenuation information corresponding to at least one component thermal management simulation module.

[0147] In some embodiments, the method further comprises:

[0148] The actual road simulation module determines the simulation route based on the starting point information and the end point information by querying the actual road map data set; and determines the vehicle operation information at different times based on the simulation route, environmental information and road information.

[0149] In some embodiments, the method further comprises:

[0150] The boundary control module controls the component thermal management simulation module to perform simulation when the temperature is at an upper limit and / or a lower limit of the operating temperature range based on the operating temperature range corresponding to the component thermal management simulation module.

[0151] In some embodiments, the method further comprises:

[0152] The control strategy module controls the simulation process based on the vehicle performance control strategy and the control strategy corresponding to at least one component thermal management simulation module.

[0153] It should be noted that, since the vehicle simulation method provided in the embodiments of the present application and any of the vehicle simulation systems provided above belong to the same inventive concept, the method may further include any other possible steps to achieve the functions and effects that can be achieved by any of the vehicle simulation systems described above. Similarly, the simulation system may further include any other possible modules to achieve any of the steps in the vehicle simulation method described above, and the embodiments of the present application will not be further described herein.

[0154] An embodiment of the present application provides a vehicle simulation method. First, based on the vehicle's operating information, environmental information and status information of the component thermal management simulation module, the air intake-related information of the component thermal management simulation module is determined, taking into account different climatic conditions and traffic environments, as well as the influence of the status information of the component thermal management simulation module on the air intake-related information of the component thermal management simulation module, thereby coupling the external factors of the vehicle with the internal factors of the vehicle, more accurately restoring the influence of different environments on the vehicle, and improving the credibility of the simulation results; secondly, based on the air intake-related information and operating information of the component thermal management simulation module, the energy consumption of the component thermal management simulation module is determined, and the energy consumption of the vehicle is determined based on the energy consumption corresponding to each component thermal management simulation module, restoring the influence of the air intake-related information on the energy consumption of the component thermal management simulation module under different working conditions, simulating real environmental conditions, and thus more accurately predicting the energy consumption of the vehicle.

[0155] In another embodiment of the present application, based on the aforementioned vehicle simulation method, the functions of the vehicle simulation system and the design process of each module are described in detail:

[0156] The present application will be further described below with reference to the accompanying drawings.

[0157] like Figure 5 As shown, the specific steps of the vehicle actual road high and low temperature energy consumption simulation method are as follows:

[0158] S601: Establish a vehicle simulation system (also known as a vehicle actual road high and low temperature energy consumption simulation model). Figure 2 The model includes an actual road simulation module 204 (also known as a vehicle actual road spectrum generation system), a vehicle power and economy simulation module (also known as a vehicle power and economy simulation model), a vehicle thermal management simulation model, a control strategy module (also known as a vehicle and thermal management control strategy system), etc.

[0159] The actual vehicle road map generation system utilizes the software's map query function. This system can quickly, simply, and accurately generate instantaneous vehicle speeds at different times based on arbitrary starting and ending points, whether a vehicle passes through a highway, the duration of a stop at an intersection, and the duration of a stop at a traffic light. This reduces the workload of collecting actual vehicle road maps and the inaccuracy of actual road map assumptions.

[0160] The vehicle power and economy simulation model includes a fast vehicle model, a driver model, and a powertrain and transmission system model. This model calculates the vehicle's power and economy at room temperature. This simple and convenient model enables a quick preliminary assessment of the economy and power of the powertrain architecture. Furthermore, the model can incorporate measured or empirically estimated aging performance parameters of the engine, motor, and battery, as well as performance parameters attenuated at high altitudes, to simulate the vehicle's economy and power under different conditions.

[0161] The vehicle thermal management simulation model includes at least one component thermal management simulation module, such as a cabin thermal management simulation module (also called a cabin thermal management system) 209, an engine thermal management simulation module (also called an engine thermal management system) 207, a battery thermal management simulation module (also called a battery thermal management system) 205, a motor and electronic control thermal management simulation module (also called a motor and electronic control thermal management system), a passenger compartment thermal management simulation module (also called a passenger compartment thermal management system) 208, and an air conditioning simulation module (also called an air conditioning system) 206. The overall principle of building a thermal management simulation model is to first establish relevant component models based on the cooling schematic and spatial layout relationship of the vehicle. Then, based on the connection relationship of the three-dimensional data, the actual pipeline direction, and the coolant flow sequence, a pipeline model is constructed to connect all components and define the flow direction.

[0162] In the embodiment of the present application, the cabin thermal management system is mainly used to calculate the air flow conditions of the cooling modules. The system can calculate the air inlet speed and air inlet temperature of each cooling module in real time according to the vehicle speed and fan speed, avoiding the problems of low precision and high workload of the traditional MAP difference method. Figure 3The system is built by directly discretizing the three-dimensional structure of the vehicle grille opening, the cooling module air guide structure, and the relationship between the cooling module and fan layout into a one-dimensional analysis model. The grille opening shape and area, the relative position between the grille and cooling module, the relative positions of the various radiators (condenser, low-temperature radiator, high-temperature radiator, oil cooler, etc.), the relative positions between the cooling module and fan, and fan speed control are all directly represented in the one-dimensional analysis model of the cabin thermal management system. Because the one-dimensional analysis model of the cabin thermal management system includes detailed three-dimensional geometric information and fan control strategies, it accurately calculates the inlet air velocity and temperature of each cooling module at different vehicle speeds and fan speeds, providing accurate calculation boundaries for the vehicle thermal management simulation model. When the grille structure or size, cooling module structure and performance, or fan structure and performance change, traditional methods require re-modeling the geometry, meshing, and calculating wind speed and temperature maps for multiple vehicle speeds and fan speeds within the three-dimensional cabin analysis model. This is time-consuming and can take at least one day. However, this method can adaptively adjust the setting parameters in the one-dimensional analysis model of the cabin thermal management system and quickly obtain the adjusted results within minutes.

[0163] In the embodiment of the present application, the engine thermal management system includes an engine block model, a friction model, a cooling system model, and a lubrication system model. The engine block model and the friction model can be used to directly calculate the heat generated by the engine water jacket, intercooler, and supercharger under any operating conditions and any environment, thereby avoiding the low accuracy of the traditional MAP difference method. In the engine block model, the three-dimensional structure of the cylinder block and cylinder head water jacket and the solid three-dimensional structure of the cylinder block and cylinder head are discretized into a one-dimensional analysis model and connected to the friction model, the cooling system model, and the lubrication system model. When calculating the heat of the engine water jacket, the model will comprehensively calculate the heat exchange processes such as the water jacket absorbing heat from the cylinder liner, the heat exchange between the solid wall of the cylinder block and cylinder head and the external environment, the friction heat of the piston skirt, the friction heat of the main bearing and connecting rod, the friction heat of the valve mechanism, the heat exchange between the oil channel and the cylinder and the oil channel wall, and the heat exchange between the oil pan and the external environment.

[0164] In the embodiments of this application, the main components of the battery thermal management system include the battery pack, water pump, chiller module, PTC heater, and piping. The main components of the motor and electronic control thermal management system include the motor, electronic control, radiator, DC-DC converter, water pump, and piping. The main components of the passenger compartment thermal management system include the doors, floor, instrument panel, seats, windows, roof, rear panel, and side panels. The main components of the air conditioning system include the compressor, radiator, expansion valve, condenser, and heat pump.

[0165] In an embodiment of the present application, the vehicle and thermal management control strategy system includes a vehicle performance control strategy, an engine control strategy, a battery control strategy, an electric motor and electronic control strategy, an air conditioning system control strategy, etc.

[0166] S602: Input the performance parameters corresponding to each component thermal management simulation module.

[0167] Among them, the performance parameters required for the vehicle's dynamic and economic simulation model include the engine universal characteristic curve, motor performance MAP diagram, battery performance MAP diagram, gearbox gear and speed ratio, vehicle coasting resistance curve, transmission system structure, etc.

[0168] Among them, the performance parameters required for the vehicle thermal management simulation model are:

[0169] Cabin thermal management system: three-dimensional cabin structure, flow resistance characteristics and heat transfer performance of each cooling module, fan speed and air volume performance.

[0170] Engine thermal management system: three-dimensional structure of the engine body, geometric characteristic parameters of the cylinder, cylinder block, cylinder head, and piston, oil pan heat exchange boundary and oil filling amount, temperature and heat transfer coefficient of the cylinder block, cylinder head, piston, valve, and airway, FMEP parameters, water pump and oil pump performance, flow resistance characteristics and heat transfer performance of the high-temperature radiator and chiller, etc.

[0171] Battery thermal management system: battery heat generation, water pump performance, chiller, radiator flow resistance characteristics and heat exchange performance, etc.

[0172] Motor electronic control thermal management system: motor electronic control heat generation, water pump performance, radiator flow resistance characteristics and heat exchange performance, etc.

[0173] Passenger compartment thermal management system: physical parameters and heat exchange area of each component, heat exchange coefficients between each component and external air and internal air, and thermal radiation parameters of internal and external air.

[0174] Air conditioning system: performance of components such as compressor, blower, expansion valve, chiller, passenger compartment cooling heat requirements, and battery thermal management system heat dissipation requirements

[0175] S603: Input the corresponding working parameters of each component thermal management simulation module, that is, the actual high and low temperature energy consumption simulation boundary of the vehicle on the road.

[0176] The boundary parameters required for the vehicle dynamics and economy simulation model include: vehicle mass, the starting and ending points of the vehicle's actual operation, traffic congestion, ambient temperature, etc.

[0177] The boundary parameters required for the vehicle thermal management system model include: the maximum and minimum temperature requirements of various components such as the engine, battery, motor, and electronic control, ambient temperature, passenger compartment, and initial coolant temperature.

[0178] S604, calibrating, solving and simulating the vehicle simulation system.

[0179] First, the vehicle power and economy simulation model is calibrated based on the measured vehicle power and economy data of WLDC, CLTC, NEDC and other regulatory conditions to ensure the accuracy of the calculation model under normal temperature regulatory conditions.

[0180] Then, the thermal management system models of each vehicle are calibrated one by one based on the flow, temperature, and flow resistance data of each thermal management system from the vehicle or bench test to ensure the accuracy of each thermal management system.

[0181] Finally, the vehicle actual road spectrum generation system, vehicle power and economy simulation model, vehicle thermal management simulation model, and vehicle and thermal management control strategy system are combined to form a complete vehicle actual road high and low temperature energy consumption simulation model, and the model is calibrated according to actual test data.

[0182] S605: Determine whether the vehicle simulation system needs to be optimized.

[0183] If yes, then return to step S602; if no, then continue to execute step S606.

[0184] The simulation model completed by calibration can simulate the vehicle operation conditions on any actual road, obtain the heating pattern and maximum temperature of each system, the energy consumption of each component and the energy consumption of the whole vehicle, study the sensitivity of each component and each control strategy to the energy consumption, and improve the hardware architecture and control strategy design of the whole vehicle.

[0185] S606, end.

[0186] In the embodiments of this application, by establishing a simulation model of the vehicle's actual road energy consumption under high and low temperatures, a detailed understanding of the vehicle's energy consumption at different temperatures can be achieved during the R&D phase. This allows for targeted improvements to the powertrain, thermal management system, control strategy, and other designs, ultimately reducing vehicle energy consumption. Compared to extensive on-road testing, simulation can rapidly simulate a variety of high and low temperature operating conditions, reducing the number of control strategy calibration tests and acceptance tests, saving R&D costs, including manpower and material resources, and shortening the R&D cycle.

[0187] Moreover, by using the simulation method provided in the embodiment of the present application, it is possible to quickly, simply and accurately input any actual road vehicle operation information, quickly and accurately calculate the radiator's air intake speed under different vehicle speeds and different fan speeds, and accurately calculate the engine heat generation. Ultimately, a detailed understanding of the vehicle's energy consumption under different environments and road conditions can be obtained, and the design can be improved in a targeted manner to reduce the energy consumption of the entire vehicle.

[0188] It should be noted that, in this application, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0189] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0190] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in each embodiment of the present application, each functional unit may be fully integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0191] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art based on the present application are within the protection scope of the present application.

Claims

1. A vehicle simulation system, characterized in that: The vehicle simulation system includes a processing module and at least one component thermal management simulation module; wherein: the component thermal management simulation module is configured to determine air intake related information of the component thermal management simulation module based on the vehicle's operating information, environmental information, and status information of the component thermal management simulation module; and determine energy consumption of the component thermal management simulation module based on the air intake related information and operating information of the component thermal management simulation module and transmit the information to the processing module; The processing module is used to determine the energy consumption of the vehicle based on the energy consumption corresponding to each of the component thermal management simulation modules.

2. The system according to claim 1, wherein: The at least one component thermal management simulation module includes a cabin thermal management simulation module, the cabin thermal management simulation module includes a first cooling unit, the first cooling unit includes at least one air guide component, at least one fan and at least one grille; wherein: The cabin thermal management simulation module is used to determine the air intake related information corresponding to each of the at least one component thermal management simulation modules based on the vehicle's operating information, the status data of the air guide component, the status data of the fan, the status data of the grille and the fan control strategy.

3. The system according to claim 2, characterized in that The at least one component thermal management simulation module includes an engine thermal management simulation module, the engine thermal management simulation module including an engine block unit, a friction unit, a lubrication unit and a second cooling unit; wherein: The engine thermal management simulation module is used to determine a first heating value of the engine thermal management simulation module by simulating the engine body unit, friction unit, lubrication unit and second cooling unit; and to determine a second heating value of the engine thermal management simulation module based on the first heating value and the intake air related information.

4. The system according to any one of claims 1 to 3, characterized in that The simulation system also includes a vehicle power and economy simulation module; wherein: The vehicle power and economy simulation module is used to determine the economy information and power information corresponding to each of the at least one component thermal management simulation modules based on the performance aging information and / or environmental attenuation information corresponding to each of the at least one component thermal management simulation modules.

5. The system according to any one of claims 1 to 3, characterized in that The simulation system also includes an actual road simulation module; wherein: The actual road simulation module is used to determine the simulation route based on the starting point information and the end point information by querying the actual road map data set; and to determine the operation information of the vehicle at different times based on the simulation route, environmental information and road information.

6. The system according to claim 2 or 3, characterized in that The simulation system also includes a boundary control module; wherein: The boundary control module is used to control the component thermal management simulation module to perform simulation when the temperature is within the upper limit and / or lower limit of the operating temperature range based on the operating temperature range corresponding to the component thermal management simulation module.

7. The system according to any one of claims 1 to 3, characterized in that The simulation system also includes a control strategy module; wherein: The control strategy module is used to control the simulation process based on the vehicle performance control strategy and the control strategy corresponding to at least one component thermal management simulation module.

8. A vehicle simulation method, characterized in that: A simulation system is applied to the construction, the simulation system including a processing module and at least one component thermal management simulation module; the method includes: The component thermal management simulation module simulates and obtains air intake related information of the component thermal management simulation module based on the operating information of the vehicle and the status information of the component thermal management simulation module; and determines the energy consumption of the component thermal management simulation module based on the air intake related information and operating information of the component thermal management simulation module and transmits the energy consumption to the processing module; The processing module determines the energy consumption of the vehicle based on the energy consumption corresponding to each of the component thermal management simulation modules.

9. The method according to claim 8, characterized in that Before the component thermal management simulation module simulates and obtains air intake related information of the component thermal management simulation module based on the vehicle operation information and the status information of the component thermal management simulation module, the method further includes: The at least one component thermal management simulation module obtains corresponding performance parameters and working boundary parameters.

10. The method according to claim 8, characterized in that The simulation system further includes a vehicle power and economy simulation module; the method further includes: The vehicle power and economy simulation module is calibrated based on first data, wherein the first data includes vehicle power and economy data under a preset working condition; The at least one component thermal management simulation module is calibrated based on second data, wherein the second data includes thermal management data of the entire vehicle or the test bench; The simulation system is calibrated based on third data, where the third data includes actual road test data.

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