Vehicle thermal management performance determination method and device, computer device, and storage medium

Abstract

The application relates to a whole vehicle thermal management performance determination method and device, computer equipment and a storage medium. The method comprises the following steps: constructing an initial evaluation model of a to-be-evaluated vehicle, calibrating parameters in the initial evaluation model to obtain a calibrated evaluation model; obtaining a target engine heat parameter, replacing a model engine heat parameter in the calibrated evaluation model by using the target engine heat parameter to obtain a replaced evaluation model; performing simulation test on the replaced evaluation model under a preset test condition to obtain a radiator inlet water temperature; determining a permissible water temperature according to the radiator inlet water temperature, a preset engine maximum water temperature and an environmental temperature of an environment where the to-be-evaluated vehicle is located; and determining the whole vehicle thermal management performance of the to-be-evaluated vehicle based on the permissible water temperature. The method can determine the thermal management performance of the whole vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and particularly relates to a whole vehicle thermal management performance determination method and device, computer equipment and a storage medium. BACKGROUND

[0002] With the development of vehicle technology, vehicle thermal management performance is paid more and more attention. The vehicle thermal management performance determines whether the vehicle components can efficiently complete the work.

[0003] In the traditional technology, the whole vehicle thermal management performance cannot be determined. SUMMARY

[0004] Therefore, it is necessary to provide a whole vehicle thermal management performance determination method and device, computer equipment and a storage medium capable of determining the whole vehicle thermal management performance.

[0005] In a first aspect, the present application provides a whole vehicle thermal management performance determination method. The method comprises the following steps:

[0006] constructing an initial evaluation model of a vehicle to be evaluated, calibrating parameters in the initial evaluation model to obtain a calibrated evaluation model;

[0007] obtaining a target engine heat parameter, replacing a model engine heat parameter in the calibrated evaluation model by using the target engine heat parameter to obtain a replaced evaluation model;

[0008] performing a simulation test on the replaced evaluation model under a preset test condition to obtain a radiator inlet water temperature;

[0009] determining a permissible water temperature according to the radiator inlet water temperature, a preset engine maximum water temperature and an ambient temperature of an environment in which the vehicle to be evaluated is located, and determining a whole vehicle thermal management performance of the vehicle to be evaluated based on the permissible water temperature.

[0010] In one of the embodiments, the step of constructing the initial evaluation model of the vehicle to be evaluated comprises the following steps:

[0011] drawing the initial evaluation model of the vehicle to be evaluated according to the sizes, materials and relative positions of the components in the thermal management system of the vehicle to be evaluated.

[0012] In one of the embodiments, the step of calibrating the parameters in the initial evaluation model to obtain the calibrated evaluation model comprises the following steps:

[0013] Under the preset test working condition, the vehicle to be evaluated is tested to obtain water inlet temperature, water outlet temperature and water inlet flow rate of a target component; wherein the target component includes a radiator, a heater, a urea tank and a urea nozzle;

[0014] The target component heat parameter is calculated by using the water inlet temperature, the water outlet temperature and the water inlet flow rate;

[0015] The initial evaluation model is simulated according to the target component heat parameter to obtain an estimated engine heat parameter, and an evaluation model after initial parameter calibration is obtained based on the target component heat parameter and the estimated engine heat parameter;

[0016] The evaluation model after initial parameter calibration is simulated under the preset test working condition until a preset simulation test stopping condition is reached to obtain an evaluation model after calibration.

[0017] In one embodiment, the simulation test of the evaluation model after initial parameter calibration until the preset simulation test stopping condition is reached includes:

[0018] The evaluation model after initial parameter calibration is simulated;

[0019] In the case where the preset simulation test stopping condition is not reached, the estimated engine heat parameter is repeatedly updated, an evaluation model after parameter update is determined based on the updated estimated engine heat parameter and the target component heat parameter, and the simulation test is continued until the preset simulation test stopping condition is reached;

[0020] The preset simulation test stopping condition includes that a deviation between a radiator simulation water inlet flow rate and a radiator water inlet flow rate is less than a preset radiator deviation value, and a deviation between a heater simulation water inlet flow rate and a heater water inlet flow rate is less than a preset heater flow rate deviation value, and a deviation between a heater simulation water inlet pressure and a heater water inlet pressure is less than a preset heater pressure deviation value, and a deviation between a urea tank simulation water inlet pressure and a urea tank water inlet pressure is less than a preset urea tank deviation value, and a deviation between a urea nozzle simulation water inlet pressure and a urea nozzle water inlet pressure is less than a preset urea nozzle deviation value.

[0021] In one embodiment, the calculation of the target component heat parameter by using the water inlet temperature, the water outlet temperature and the water inlet flow rate includes:

[0022] An absolute value of a difference between the water inlet temperature and the water outlet temperature is obtained, the absolute value of the difference, a preset heat coefficient and the water inlet flow rate are multiplied by each other, and a product obtained is taken as the target component heat parameter.

[0023] In one of the embodiments, the allowable water temperature is determined according to the radiator inlet water temperature, a preset maximum engine water temperature, and an ambient temperature of an environment in which the automobile to be evaluated is located.

[0024] The preset maximum engine water temperature is subtracted from the radiator inlet water temperature to obtain a difference value, and a sum value between the difference value and the ambient temperature of the environment in which the automobile to be evaluated is located is taken as the allowable water temperature.

[0025] In a second aspect, the present application further provides a vehicle thermal management performance determination device. The device comprises:

[0026] a model calibration module configured to construct an initial evaluation model of an automobile to be evaluated, calibrate parameters in the initial evaluation model, and obtain a calibrated evaluation model;

[0027] a parameter replacement module configured to obtain target engine heat parameters, replace model engine heat parameters in the calibrated evaluation model with the target engine heat parameters, and obtain a replaced evaluation model;

[0028] a simulation test module configured to perform a simulation test on the replaced evaluation model under a preset test condition, and obtain a radiator inlet water temperature;

[0029] a performance determination module configured to determine an allowable water temperature according to the radiator inlet water temperature, a preset maximum engine water temperature, and an ambient temperature of an environment in which the automobile to be evaluated is located, and determine a vehicle thermal management performance of the automobile to be evaluated based on the allowable water temperature.

[0030] In a third aspect, the present application further provides a computer device. The computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements steps of the method in any of the above embodiments when executing the computer program.

[0031] In a fourth aspect, the present application further provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program implements steps of the method in any of the above embodiments when executed by a processor.

[0032] In a fifth aspect, the present application further provides a computer program product. The computer program product comprises a computer program, and the computer program implements steps of the method in any of the above embodiments when executed by a processor.

[0033] The aforementioned method, apparatus, computer equipment, and storage medium for determining the overall vehicle thermal management performance construct an initial evaluation model of the vehicle to be evaluated, calibrate the parameters in the initial evaluation model to obtain a calibrated evaluation model, acquire the target engine thermal parameters, replace the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters to obtain a replaced evaluation model, conduct simulation tests on the replaced evaluation model under preset test conditions, acquire the radiator inlet water temperature, and determine the permissible water temperature based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle to be evaluated is located, thereby determining the overall vehicle thermal management performance. Compared to traditional technologies that cannot determine the overall vehicle thermal management performance, this application, by constructing an initial evaluation model of the vehicle to be evaluated, calibrating the parameters of the initial evaluation model, replacing the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters, conducting simulation tests on the replaced evaluation model, obtaining the permissible water temperature, and determining the overall vehicle thermal management performance, can accurately determine the overall vehicle thermal management performance. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating the method for determining the thermal management performance of a vehicle provided in the embodiments of this application;

[0035] Figure 2 This is a flowchart illustrating the calibration of parameters in an initial evaluation model in one embodiment.

[0036] Figure 3 This is a structural block diagram of a vehicle thermal management performance determination device provided in the embodiments of this application;

[0037] Figure 4 This is an internal structural diagram of a computer device provided in an embodiment of this application. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] In this embodiment, a method for determining the thermal management performance of a vehicle is provided. This embodiment uses the application of this method to a computer device as an example for illustration. It can be understood that this method can also be applied to a server, and can also be applied to a system including a computer device and a server, and can be implemented through the interaction between the computer device and the server.

[0040] Figure 1This is a flowchart illustrating the method for determining the thermal management performance of a vehicle provided in this application. The method is applied to a computer device or server. In one embodiment, such as... Figure 1 As shown, it includes the following steps:

[0041] S101, Construct an initial evaluation model for the vehicle to be evaluated, calibrate the parameters in the initial evaluation model, and obtain the calibrated evaluation model.

[0042] The vehicle to be evaluated is a type of vehicle for which the overall thermal management performance is to be evaluated. The initial evaluation model is a model composed of the various components of the vehicle to be evaluated.

[0043] S102, Obtain the target engine thermal parameters, and use the target engine thermal parameters to replace the model engine thermal parameters in the calibrated evaluation model to obtain the replaced evaluation model.

[0044] The target engine thermal parameters are the calibrated engine thermal parameters of a specific vehicle being evaluated. The model engine thermal parameters are the calibrated engine thermal parameters in the calibrated evaluation model.

[0045] S103, under preset test conditions, conduct simulation tests on the replaced evaluation model to obtain the radiator inlet water temperature.

[0046] The preset test conditions refer to the actual operating conditions that the vehicle under evaluation would encounter during use. These preset test conditions include, but are not limited to, engine extreme operating conditions, vehicle heat dissipation boundary conditions, low-speed conditions, high-speed conditions, and low-temperature heating conditions. The preset test condition conditions are the test conditions corresponding to the respective preset test conditions.

[0047] S104. Based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle to be evaluated is located, the allowable water temperature is determined, and based on the allowable water temperature, the overall vehicle thermal management performance of the vehicle to be evaluated is determined.

[0048] The preset maximum engine coolant temperature is calibrated by a calibration engineer. The ambient temperature of the environment in which the vehicle under evaluation is located is the ambient temperature outside the vehicle. In some embodiments, the vehicle thermal management performance of the vehicle under evaluation is determined based on the allowable coolant temperature by the principle that the higher the allowable coolant temperature, the better the vehicle thermal management performance.

[0049] The method for determining the overall vehicle thermal management performance provided in this embodiment constructs an initial evaluation model of the vehicle to be evaluated, calibrates the parameters in the initial evaluation model to obtain a calibrated evaluation model, obtains the target engine thermal parameters, replaces the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters, and obtains a replaced evaluation model. Under preset test conditions, a simulation test is conducted on the replaced evaluation model to obtain the radiator inlet water temperature. Based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle to be evaluated is located, the permissible water temperature is determined, thereby determining the overall vehicle thermal management performance of the vehicle to be evaluated. Compared with traditional technologies that cannot determine the overall vehicle thermal management performance, this embodiment, by constructing an initial evaluation model of the vehicle to be evaluated, calibrating the parameters of the initial evaluation model, replacing the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters, conducting a simulation test on the replaced evaluation model, obtaining the permissible water temperature, and determining the overall vehicle thermal management performance, can determine the overall vehicle thermal management performance and ensure the accuracy of the determination.

[0050] In one embodiment, constructing an initial evaluation model for the vehicle to be evaluated includes:

[0051] Based on the dimensions, materials, and relative positions of the components in the thermal management system of the vehicle to be evaluated, an initial evaluation model of the vehicle to be evaluated is drawn.

[0052] The components of the thermal management system of the vehicle under evaluation include, but are not limited to, the engine, radiator, heater, air compressor, expansion tank, fuel heater, urea tank, and urea injector. The dimensions of each component are the length and inner diameter of the water inlet and outlet pipes. The materials of each component are the materials of the water inlet and outlet pipes. The relative positions of each component are the connection points of the water inlet and outlet pipes between them. Taking the radiator as an example, the radiator water inlet pipe is 595 mm long, has an inner diameter of 45 mm, and is made of EPDM; the radiator water inlet is connected to the thermostat cover. The radiator water outlet pipe is 1465 mm long, has an inner diameter of 55 mm, and is made of EPDM and steel pipes; the radiator water outlet is connected to the water pump. In some embodiments, an initial evaluation model of the vehicle under evaluation is drawn based on the actual dimensions, materials, and relative positions of the components, and the return points of the vehicle's water system are marked.

[0053] In this embodiment, the initial evaluation model obtained based on the size, material, and relative position of each component of the actual vehicle to be evaluated can accurately replicate the water circuit information of the thermal management system in the vehicle to be evaluated, ensuring the accuracy of the data during subsequent model tests.

[0054] In one embodiment, the parameters in the initial evaluation model are calibrated to obtain a calibrated evaluation model. A flowchart illustrating the process of calibrating the parameters in the initial evaluation model is shown below. Figure 2 As shown, it includes the following:

[0055] S201, under preset test conditions, conduct tests on the vehicle to be evaluated to obtain the inlet water temperature, outlet water temperature and inlet water flow rate of the target components; wherein, the target components include the radiator, heater, urea tank and urea nozzle.

[0056] In some embodiments, taking the engine's extreme operating condition as an example, the preset test conditions corresponding to the engine's extreme operating condition are: an ambient temperature of 35 degrees Celsius for the environment in which the vehicle under evaluation is located, the thermostat is forcibly opened, the fan is forced to its maximum speed, and the engine speed is set. The test ends when the fluctuation value of the engine's outlet water temperature is less than a preset fluctuation threshold within a preset time period. The preset time period can be set to 4 minutes, and the preset fluctuation threshold can be set to 0.5.

[0057] S202 uses the inlet water temperature, outlet water temperature and inlet water flow rate to calculate the heat parameters of the target component.

[0058] In one embodiment, the thermal parameters of the target component are calculated using the inlet water temperature, outlet water temperature, and inlet water flow rate, including:

[0059] Obtain the absolute value of the difference between the inlet water temperature and the outlet water temperature, multiply the absolute value of the difference, the preset heat coefficient, and the inlet water flow rate, and use the product as the heat parameter of the target component.

[0060] The preset heat coefficient is manually set and can be set to 4.1. In this embodiment, setting the preset heat coefficient can improve the accuracy of the obtained heat parameters of the target component.

[0061] S203. Simulate the initial evaluation model according to the thermal parameters of the target component to obtain the estimated engine thermal parameters. Based on the thermal parameters of the target component and the estimated engine thermal parameters, obtain the evaluation model after initial parameter calibration.

[0062] Among them, the estimated engine thermal parameters are determined based on the thermal parameters of the target components.

[0063] S204. Under preset test conditions, conduct simulation tests on the evaluation model after initial parameter calibration until the preset stop simulation test conditions are met, and obtain the calibrated evaluation model.

[0064] In this embodiment, the target component thermal parameters are obtained by testing the vehicle to be evaluated and input into the initial evaluation model to obtain the evaluation model after initial parameter calibration. The target component thermal parameters are obtained by testing the actual vehicle to be evaluated, and the accuracy is high.

[0065] In one embodiment, a simulation experiment is conducted on the evaluation model after initial parameter calibration until a preset stop simulation experiment condition is met, including:

[0066] Simulation tests were conducted on the evaluation model after initial parameter calibration. If the preset simulation test stop conditions were not met, the estimated engine heat parameters were repeatedly updated. Based on the updated estimated engine heat parameters and the target component heat parameters, the updated evaluation model was determined, and simulation tests continued until the preset simulation test stop conditions were met. These preset simulation test stop conditions included: the deviation between the simulated radiator inlet flow rate and the actual radiator inlet flow rate being less than the preset radiator deviation value; the deviation between the simulated heater air inlet flow rate and the actual heater air inlet flow rate being less than the preset heater air flow rate deviation value; the deviation between the simulated heater air inlet pressure and the actual heater air inlet pressure being less than the preset heater air pressure deviation value; the deviation between the simulated urea tank inlet pressure and the actual urea tank inlet pressure being less than the preset urea tank deviation value; and the deviation between the simulated urea nozzle inlet pressure and the actual urea nozzle inlet pressure being less than the preset urea nozzle deviation value.

[0067] Specifically, the simulated inlet water flow rate of the radiator, the simulated inlet water flow rate of the heater, the simulated inlet water pressure of the heater, the simulated inlet water pressure of the urea tank, and the simulated inlet water pressure of the urea nozzle are obtained through simulation tests on the evaluation model after initial parameter calibration; the simulated inlet water flow rate of the radiator, the simulated inlet water flow rate of the heater, the simulated inlet water pressure of the heater, the simulated inlet water pressure of the urea tank, and the simulated inlet water pressure of the urea nozzle are obtained through testing on the vehicle to be evaluated. In some embodiments, the preset deviation values ​​of the radiator, the heater flow rate, the heater pressure, the urea tank, and the urea nozzle are all manually set. Typically, the preset deviation values ​​of the radiator and the heater flow rate are set to 2.5%, and the preset deviation values ​​of the heater pressure, the urea tank, and the urea nozzle are set to 1%.

[0068] In this embodiment, the estimated engine thermal parameters are repeatedly updated until the preset stop simulation test conditions are met, at which point the updates stop and a calibrated evaluation model is obtained. This ensures the accuracy of each parameter in the calibrated evaluation model. Subsequently, the allowable water temperature is obtained using this calibrated evaluation model, which is relatively accurate and ensures the accuracy of the determination of the vehicle's thermal management performance.

[0069] In one embodiment, determining the permissible water temperature based on the radiator inlet water temperature, a preset maximum engine coolant temperature, and the ambient temperature of the environment in which the vehicle being evaluated is located includes:

[0070] The difference between the preset maximum engine coolant temperature and the radiator inlet temperature is used to obtain the allowable coolant temperature. The sum of this difference and the ambient temperature of the environment in which the vehicle being evaluated is located is used as the allowable coolant temperature.

[0071] The preset maximum engine coolant temperature is typically 108 degrees Celsius.

[0072] In this embodiment, the allowable water temperature is determined to facilitate the determination of the vehicle's thermal management performance. The process of determining the allowable water temperature is simple and easy to execute, which can improve the efficiency of determining the vehicle's thermal management performance.

[0073] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0074] Based on the same inventive concept, this application also provides a vehicle thermal management performance determination device for implementing the above-described vehicle thermal management performance determination method. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more vehicle thermal management performance determination device embodiments provided below can be found in the limitations of the vehicle thermal management performance determination method described above, and will not be repeated here.

[0075] See Figure 3 , Figure 3 This is a structural block diagram of a vehicle thermal management performance determination device provided in this application embodiment. The device 300 includes: a model calibration module 301, a parameter replacement module 302, a simulation test module 303, and a performance determination module 304, wherein:

[0076] The model calibration module 301 is used to construct an initial evaluation model of the vehicle to be evaluated, calibrate the parameters in the initial evaluation model, and obtain the calibrated evaluation model.

[0077] The parameter replacement module 302 is used to obtain the target engine thermal parameters and replace the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters to obtain the replaced evaluation model.

[0078] The simulation test module 303 is used to conduct simulation tests on the replaced evaluation model under preset test conditions to obtain the radiator inlet water temperature.

[0079] The performance determination module 304 is used to determine the allowable water temperature based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle to be evaluated is located, and to determine the overall vehicle thermal management performance of the vehicle to be evaluated based on the allowable water temperature.

[0080] The vehicle thermal management performance determination device provided in this embodiment constructs an initial evaluation model of the vehicle to be evaluated, calibrates the parameters in the initial evaluation model to obtain a calibrated evaluation model, obtains the target engine thermal parameters, replaces the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters, and obtains a replaced evaluation model. Under preset test conditions, a simulation test is conducted on the replaced evaluation model to obtain the radiator inlet water temperature. Based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle to be evaluated is located, the allowable water temperature is determined, thereby determining the vehicle's overall thermal management performance. Compared to traditional technologies that cannot determine the thermal management performance of the entire vehicle, this embodiment, by constructing an initial evaluation model of the vehicle to be evaluated, calibrating the parameters of the initial evaluation model, replacing the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters, conducting a simulation test on the replaced evaluation model, obtaining the allowable water temperature, and determining the vehicle's overall thermal management performance, can determine the overall vehicle thermal management performance and ensures the accuracy of the determination.

[0081] Optionally, the model calibration module 301 includes:

[0082] The model building unit is used to draw an initial evaluation model of the vehicle to be evaluated based on the size, material, and relative position of each component in the thermal management system of the vehicle to be evaluated.

[0083] Optionally, the model calibration module 301 includes:

[0084] The data acquisition unit is used to conduct tests on the vehicle to be evaluated under preset test conditions to acquire the inlet water temperature, outlet water temperature and inlet water flow rate of the target components; wherein, the target components include the radiator, heater, urea tank and urea nozzle;

[0085] The parameter determination unit is used to calculate the thermal parameters of the target component using the inlet water temperature, outlet water temperature, and inlet water flow rate.

[0086] The initial calibration unit is used to simulate the initial evaluation model according to the thermal parameters of the target component to obtain the estimated engine thermal parameters. Based on the thermal parameters of the target component and the estimated engine thermal parameters, the evaluation model after initial parameter calibration is obtained.

[0087] The model calibration unit is used to conduct simulation tests on the evaluation model after initial parameter calibration under preset test conditions until the preset stop simulation test conditions are met, and the calibrated evaluation model is obtained.

[0088] Optionally, the model calibration unit includes:

[0089] The simulation test subunit is used to conduct simulation tests on the evaluation model after the initial parameter calibration.

[0090] The model calibration subunit is used to repeatedly update the estimated engine thermal parameters if the preset simulation test stop conditions are not met. Based on the updated estimated engine thermal parameters and the target component thermal parameters, the evaluation model with updated parameters is determined, and the simulation test continues until the preset simulation test stop conditions are met. The preset simulation test stop conditions include: the deviation between the simulated radiator inlet water flow rate and the actual radiator inlet water flow rate is less than the preset radiator deviation value; the deviation between the simulated heater air inlet water flow rate and the actual heater air inlet water flow rate is less than the preset heater air flow rate deviation value; the deviation between the simulated heater air inlet water pressure and the actual heater air inlet water pressure is less than the preset heater air pressure deviation value; the deviation between the simulated urea tank inlet water pressure and the actual urea tank inlet water pressure is less than the preset urea tank deviation value; and the deviation between the simulated urea nozzle inlet water pressure and the actual urea nozzle inlet water pressure is less than the preset urea nozzle deviation value.

[0091] Optionally, the parameter determination unit includes:

[0092] The parameter calculation subunit is used to obtain the absolute value of the difference between the inlet water temperature and the outlet water temperature. The absolute value of the difference, the preset heat coefficient, and the inlet water flow rate are multiplied together, and the product is used as the heat parameter of the target component.

[0093] Optionally, the performance determination module 304 includes:

[0094] The permissible water temperature calculation unit is used to subtract the radiator inlet water temperature from the preset maximum engine water temperature to obtain the difference, and the sum of the difference and the ambient temperature of the environment in which the vehicle to be evaluated is located is used as the permissible water temperature.

[0095] Each module in the aforementioned vehicle thermal management performance determination device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0096] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 4As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a method for determining the thermal management performance of a vehicle. The display unit is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0097] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0098] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the vehicle thermal management performance determination method provided in the above embodiment.

[0099] An initial evaluation model for the vehicle to be evaluated is constructed, and the parameters in the initial evaluation model are calibrated to obtain the calibrated evaluation model.

[0100] Obtain the target engine thermal parameters, and use the target engine thermal parameters to replace the model engine thermal parameters in the calibrated evaluation model to obtain the replaced evaluation model;

[0101] Under preset test conditions, a simulation test was conducted on the replaced evaluation model to obtain the radiator inlet water temperature;

[0102] Based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle under evaluation is located, the allowable water temperature is determined, and based on the allowable water temperature, the overall vehicle thermal management performance of the vehicle under evaluation is determined.

[0103] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0104] Based on the dimensions, materials, and relative positions of the components in the thermal management system of the vehicle to be evaluated, an initial evaluation model of the vehicle to be evaluated is drawn.

[0105] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0106] Under preset test conditions, the vehicle to be evaluated is tested to obtain the inlet water temperature, outlet water temperature and inlet water flow rate of the target components; the target components include the radiator, heater, urea tank and urea nozzle;

[0107] The thermal parameters of the target component are calculated using the inlet water temperature, outlet water temperature, and inlet water flow rate.

[0108] The initial evaluation model is simulated according to the thermal parameters of the target component to obtain the estimated engine thermal parameters. Based on the thermal parameters of the target component and the estimated engine thermal parameters, the evaluation model after initial parameter calibration is obtained.

[0109] Under preset test conditions, the evaluation model after initial parameter calibration is simulated until the preset conditions for stopping the simulation test are met, and the calibrated evaluation model is obtained.

[0110] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0111] Simulation experiments were conducted on the evaluation model after initial parameter calibration;

[0112] If the preset conditions for stopping the simulation test are not met, the estimated engine thermal parameters are updated repeatedly. Based on the updated estimated engine thermal parameters and the thermal parameters of the target component, the evaluation model after updating the parameters is determined, and the simulation test continues until the preset conditions for stopping the simulation test are met.

[0113] The preset conditions for stopping the simulation test include: the deviation between the simulated water flow rate of the radiator and the actual water flow rate of the radiator is less than the preset radiator deviation value; the deviation between the simulated water flow rate of the warm air and the actual water flow rate of the warm air is less than the preset warm air flow deviation value; the deviation between the simulated water pressure of the warm air and the actual water pressure of the warm air is less than the preset warm air pressure deviation value; the deviation between the simulated water pressure of the urea tank and the actual water pressure of the urea tank is less than the preset urea tank deviation value; and the deviation between the simulated water pressure of the urea nozzle and the actual water pressure of the urea nozzle is less than the preset urea nozzle deviation value.

[0114] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0115] Obtain the absolute value of the difference between the inlet water temperature and the outlet water temperature, multiply the absolute value of the difference, the preset heat coefficient, and the inlet water flow rate, and use the product as the heat parameter of the target component.

[0116] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0117] The difference between the preset maximum engine coolant temperature and the radiator inlet temperature is used to obtain the allowable coolant temperature. The sum of this difference and the ambient temperature of the environment in which the vehicle being evaluated is located is used as the allowable coolant temperature.

[0118] The implementation principle and technical effects of the above embodiments are similar to those of the above method embodiments, and will not be repeated here.

[0119] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the vehicle thermal management performance determination method provided in the above embodiment:

[0120] An initial evaluation model for the vehicle to be evaluated is constructed, and the parameters in the initial evaluation model are calibrated to obtain the calibrated evaluation model.

[0121] Obtain the target engine thermal parameters, and use the target engine thermal parameters to replace the model engine thermal parameters in the calibrated evaluation model to obtain the replaced evaluation model;

[0122] Under preset test conditions, a simulation test was conducted on the replaced evaluation model to obtain the radiator inlet water temperature;

[0123] Based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle under evaluation is located, the allowable water temperature is determined, and based on the allowable water temperature, the overall vehicle thermal management performance of the vehicle under evaluation is determined.

[0124] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0125] Based on the dimensions, materials, and relative positions of the components in the thermal management system of the vehicle to be evaluated, an initial evaluation model of the vehicle to be evaluated is drawn.

[0126] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0127] Under preset test conditions, the vehicle to be evaluated is tested to obtain the inlet water temperature, outlet water temperature and inlet water flow rate of the target components; the target components include the radiator, heater, urea tank and urea nozzle;

[0128] The thermal parameters of the target component are calculated using the inlet water temperature, outlet water temperature, and inlet water flow rate.

[0129] The initial evaluation model is simulated according to the thermal parameters of the target component to obtain the estimated engine thermal parameters. Based on the thermal parameters of the target component and the estimated engine thermal parameters, the evaluation model after initial parameter calibration is obtained.

[0130] Under preset test conditions, the evaluation model after initial parameter calibration is simulated until the preset conditions for stopping the simulation test are met, and the calibrated evaluation model is obtained.

[0131] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0132] Simulation experiments were conducted on the evaluation model after initial parameter calibration;

[0133] If the preset conditions for stopping the simulation test are not met, the estimated engine thermal parameters are updated repeatedly. Based on the updated estimated engine thermal parameters and the thermal parameters of the target component, the evaluation model after updating the parameters is determined, and the simulation test continues until the preset conditions for stopping the simulation test are met.

[0134] The preset conditions for stopping the simulation test include: the deviation between the simulated water flow rate of the radiator and the actual water flow rate of the radiator is less than the preset radiator deviation value; the deviation between the simulated water flow rate of the warm air and the actual water flow rate of the warm air is less than the preset warm air flow deviation value; the deviation between the simulated water pressure of the warm air and the actual water pressure of the warm air is less than the preset warm air pressure deviation value; the deviation between the simulated water pressure of the urea tank and the actual water pressure of the urea tank is less than the preset urea tank deviation value; and the deviation between the simulated water pressure of the urea nozzle and the actual water pressure of the urea nozzle is less than the preset urea nozzle deviation value.

[0135] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0136] Obtain the absolute value of the difference between the inlet water temperature and the outlet water temperature, multiply the absolute value of the difference, the preset heat coefficient, and the inlet water flow rate, and use the product as the heat parameter of the target component.

[0137] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0138] The difference between the preset maximum engine coolant temperature and the radiator inlet temperature is used to obtain the allowable coolant temperature. The sum of this difference and the ambient temperature of the environment in which the vehicle being evaluated is located is used as the allowable coolant temperature.

[0139] The implementation principle and technical effects of the above embodiments are similar to those of the above method embodiments, and will not be repeated here.

[0140] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the vehicle thermal management performance determination method provided in the above embodiment:

[0141] An initial evaluation model for the vehicle to be evaluated is constructed, and the parameters in the initial evaluation model are calibrated to obtain the calibrated evaluation model.

[0142] Obtain the target engine thermal parameters, and use the target engine thermal parameters to replace the model engine thermal parameters in the calibrated evaluation model to obtain the replaced evaluation model;

[0143] Under preset test conditions, a simulation test was conducted on the replaced evaluation model to obtain the radiator inlet water temperature;

[0144] Based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle under evaluation is located, the allowable water temperature is determined, and based on the allowable water temperature, the overall vehicle thermal management performance of the vehicle under evaluation is determined.

[0145] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0146] Based on the dimensions, materials, and relative positions of the components in the thermal management system of the vehicle to be evaluated, an initial evaluation model of the vehicle to be evaluated is drawn.

[0147] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0148] Under preset test conditions, the vehicle to be evaluated is tested to obtain the inlet water temperature, outlet water temperature and inlet water flow rate of the target components; the target components include the radiator, heater, urea tank and urea nozzle;

[0149] The thermal parameters of the target component are calculated using the inlet water temperature, outlet water temperature, and inlet water flow rate.

[0150] The initial evaluation model is simulated according to the thermal parameters of the target component to obtain the estimated engine thermal parameters. Based on the thermal parameters of the target component and the estimated engine thermal parameters, the evaluation model after initial parameter calibration is obtained.

[0151] Under preset test conditions, the evaluation model after initial parameter calibration is simulated until the preset conditions for stopping the simulation test are met, and the calibrated evaluation model is obtained.

[0152] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0153] Simulation experiments were conducted on the evaluation model after initial parameter calibration;

[0154] If the preset conditions for stopping the simulation test are not met, the estimated engine thermal parameters are updated repeatedly. Based on the updated estimated engine thermal parameters and the thermal parameters of the target component, the evaluation model after updating the parameters is determined, and the simulation test continues until the preset conditions for stopping the simulation test are met.

[0155] The preset conditions for stopping the simulation test include: the deviation between the simulated water flow rate of the radiator and the actual water flow rate of the radiator is less than the preset radiator deviation value; the deviation between the simulated water flow rate of the warm air and the actual water flow rate of the warm air is less than the preset warm air flow deviation value; the deviation between the simulated water pressure of the warm air and the actual water pressure of the warm air is less than the preset warm air pressure deviation value; the deviation between the simulated water pressure of the urea tank and the actual water pressure of the urea tank is less than the preset urea tank deviation value; and the deviation between the simulated water pressure of the urea nozzle and the actual water pressure of the urea nozzle is less than the preset urea nozzle deviation value.

[0156] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0157] Obtain the absolute value of the difference between the inlet water temperature and the outlet water temperature, multiply the absolute value of the difference, the preset heat coefficient, and the inlet water flow rate, and use the product as the heat parameter of the target component.

[0158] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0159] The difference between the preset maximum engine coolant temperature and the radiator inlet temperature is used to obtain the allowable coolant temperature. The sum of this difference and the ambient temperature of the environment in which the vehicle being evaluated is located is used as the allowable coolant temperature.

[0160] The implementation principle and technical effects of the above embodiments are similar to those of the above method embodiments, and will not be repeated here.

[0161] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0162] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0163] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for determining the thermal management performance of a vehicle, characterized in that, The method includes: An initial evaluation model for the vehicle to be evaluated is constructed, and the parameters in the initial evaluation model are calibrated to obtain a calibrated evaluation model. Obtain the target engine thermal parameters, and use the target engine thermal parameters to replace the model engine thermal parameters in the calibrated evaluation model to obtain the replaced evaluation model; Under preset test conditions, a simulation test was conducted on the replaced evaluation model to obtain the radiator inlet water temperature. Based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle to be evaluated is located, the allowable water temperature is determined, and based on the allowable water temperature, the overall vehicle thermal management performance of the vehicle to be evaluated is determined. The calibration of the parameters in the initial evaluation model to obtain the calibrated evaluation model includes: Under the preset test conditions, the vehicle to be evaluated is tested to obtain the inlet water temperature, outlet water temperature and inlet water flow rate of the target components; wherein, the target components include radiator, heater, urea tank and urea nozzle; The thermal parameters of the target component are calculated using the inlet water temperature, the outlet water temperature, and the inlet water flow rate. The initial evaluation model is simulated according to the thermal parameters of the target component to obtain the estimated engine thermal parameters. Based on the thermal parameters of the target component and the estimated engine thermal parameters, the evaluation model after initial parameter calibration is obtained. Under the preset test conditions, the evaluation model after initial parameter calibration is subjected to simulation test until the preset stop simulation test condition is reached, and the calibrated evaluation model is obtained.

2. The method according to claim 1, characterized in that, The construction of the initial evaluation model for the vehicle to be evaluated includes: Based on the dimensions, materials, and relative positions of the components in the thermal management system of the vehicle to be evaluated, an initial evaluation model of the vehicle to be evaluated is drawn.

3. The method according to claim 1, characterized in that, The simulation test of the evaluation model after the initial calibration of the parameters, until the preset conditions for stopping the simulation test are met, includes: A simulation experiment was conducted on the evaluation model after the initial calibration of the parameters. If the preset conditions for stopping the simulation test are not met, the estimated engine thermal parameters are updated repeatedly. Based on the updated estimated engine thermal parameters and the thermal parameters of the target component, the evaluation model after updating the parameters is determined, and the simulation test continues until the preset conditions for stopping the simulation test are met. The preset stop simulation test conditions include: the deviation between the simulated inlet water flow rate of the radiator and the actual inlet water flow rate of the radiator is less than the preset radiator deviation value; the deviation between the simulated inlet water flow rate of the warm air and the actual inlet water flow rate of the warm air is less than the preset warm air flow deviation value; the deviation between the simulated inlet water pressure of the warm air and the actual inlet water pressure of the warm air is less than the preset warm air pressure deviation value; the deviation between the simulated inlet water pressure of the urea tank and the actual inlet water pressure of the urea tank is less than the preset urea tank deviation value; and the deviation between the simulated inlet water pressure of the urea nozzle and the actual inlet water pressure of the urea nozzle is less than the preset urea nozzle deviation value.

4. The method according to claim 1, characterized in that, The calculation of the heat parameters of the target component using the inlet water temperature, the outlet water temperature, and the inlet water flow rate includes: Obtain the absolute value of the difference between the inlet water temperature and the outlet water temperature, multiply the absolute value of the difference, the preset heat coefficient, and the inlet water flow rate, and use the product as the heat parameter of the target component.

5. The method according to claim 1, characterized in that, The step of determining the permissible water temperature based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment in which the vehicle to be evaluated is located includes: The difference between the preset maximum engine coolant temperature and the radiator inlet water temperature is used as the allowable water temperature. The sum of the difference and the ambient temperature of the environment in which the vehicle to be evaluated is located is used as the allowable water temperature.

6. A device for determining the thermal management performance of a vehicle, characterized in that, The device includes: The model calibration module is used to construct an initial evaluation model of the vehicle to be evaluated, calibrate the parameters in the initial evaluation model, and obtain the calibrated evaluation model. The parameter replacement module is used to obtain the target engine thermal parameters and replace the model engine thermal parameters in the calibrated evaluation model with the target engine thermal parameters to obtain the replaced evaluation model. The simulation test module is used to conduct simulation tests on the replaced evaluation model under preset test conditions to obtain the radiator inlet water temperature. The performance determination module is used to determine the allowable water temperature based on the radiator inlet water temperature, the preset maximum engine water temperature, and the ambient temperature of the environment where the vehicle to be evaluated is located, and to determine the overall vehicle thermal management performance of the vehicle to be evaluated based on the allowable water temperature. The model calibration module includes: The data acquisition unit is used to conduct tests on the vehicle to be evaluated under the preset test conditions to acquire the inlet water temperature, outlet water temperature and inlet water flow rate of the target components; wherein, the target components include a radiator, heater, urea tank and urea nozzle; The parameter determination unit is used to calculate the heat parameters of the target component using the inlet water temperature, the outlet water temperature and the inlet water flow rate; An initial calibration unit is used to simulate the initial evaluation model according to the target component thermal parameters to obtain the estimated engine thermal parameters, and to obtain the evaluation model after initial parameter calibration based on the target component thermal parameters and the estimated engine thermal parameters. The model calibration unit is used to conduct simulation tests on the evaluation model after initial parameter calibration under the preset test conditions until the preset stop simulation test conditions are met, so as to obtain the calibrated evaluation model.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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