Collaborative integration method and device for automobile multi-physics field thermodynamic components

Abstract

The invention relates to the technical field of vehicle thermal management, in particular to an automobile multi-physics field thermodynamic component collaborative integration method and device.The method comprises the steps that based on an electromagnetic field, a thermal field and a fluid flow field of a target vehicle, multi-physics field coupling characteristics of the target vehicle are obtained; based on the multi-physics field coupling characteristics, dynamic characteristic models corresponding to a plurality of thermodynamic components of the target vehicle are established; and constructing a thermal management model through the dynamic characteristic model, so as to utilize the thermal management model to couple and solve the thermal management model of the flow distribution indexes of the plurality of thermodynamic components, and controlling the plurality of thermodynamic components to operate cooperatively through the energy interaction interface between the predefined components and the flow distribution indexes. The method can achieve the building of a multi-physics field high-precision theoretical thermodynamic model and the efficient coupling integration of a thermal management model, achieves the precise thermal management of a target vehicle, improves the overall performance of the vehicle, can be applied to the design stage of a thermal management system, and carries out the comparison and evaluation of a plurality of schemes.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management, and in particular to a method and device for collaboratively integrating automotive multi-physical field thermodynamic components. Background Art

[0002] As the world pays more and more attention to environmental protection and sustainable energy development, new energy vehicles (such as pure electric vehicles, hybrid vehicles, etc.) have gradually become an important development direction of the automotive industry. Among them, the thermal management system (TMS) plays a vital role in its performance, safety and reliability, involving multiple fields and disciplines such as electromechanical and thermal fluid.

[0003] In related technologies, the thermal management system of new energy vehicles is mainly designed based on multiple functions such as cooling, heating, and defogger, while taking into account the system energy consumption. It is gradually evolving into an integrated vehicle thermal management form to meet the needs of compactness, lightweight and comprehensive energy management.

[0004] However, in the relevant technologies, the thermal management system of new energy vehicles ignores the different performance requirements of the thermal management system in different operating conditions during actual driving (such as urban driving, high-speed driving, extreme weather, etc.), and the focus of thermal management is also different under the influence of different factors. It is difficult to perform accurate thermal management of new energy vehicles under different operating conditions, and the energy utilization efficiency needs to be improved, which needs to be urgently solved. Summary of the invention

[0005] The present invention provides a method and device for the coordinated integration of automotive multi-physical field thermodynamic components to solve the problems in related technologies that the thermal management system of new energy vehicles ignores the different performance requirements of the thermal management system under different operating conditions during actual driving, and the focus of thermal management is also different under the influence of different factors, making it difficult to perform accurate thermal management of new energy vehicles under different operating conditions, and the energy utilization efficiency needs to be improved.

[0006] The first aspect of the present invention provides a method for the collaborative integration of automotive multi-physics field thermodynamic components, comprising the following steps: based on the electromagnetic field, thermal field and fluid flow field of the target vehicle, obtaining the multi-physics field coupling characteristics of the target vehicle; based on the multi-physics field coupling characteristics, establishing a dynamic characteristic model corresponding to multiple thermodynamic components of the target vehicle; constructing a thermal management model through the dynamic characteristic model, so as to utilize the thermal management model to couple and solve the thermal management model of the flow distribution index of the multiple thermodynamic components, and controlling the collaborative operation of the multiple thermodynamic components through the predefined energy interaction interface between components and the flow distribution index.

[0007] Through the above technical means, the embodiments of the present invention can establish models corresponding to multiple thermodynamic components based on the multi-physical field coupling characteristics of the target vehicle, accurately simulate the performance of multiple thermodynamic components under various working conditions, and integrate them into a thermal management model to calculate the flow distribution indexes of multiple thermodynamic components of the target vehicle under multi-physical fields, and control the coordinated operation of multiple thermodynamic components according to these indexes, effectively improving the thermal management performance of the embodiments of the present invention in the face of different actual driving conditions of the target vehicle, enabling precise thermal management of multiple thermodynamic components, greatly improving the energy utilization efficiency of the target vehicle, helping to improve the endurance of the target vehicle, and thus enhancing the overall performance of the target vehicle.

[0008] Optionally, in an embodiment of the present invention, the establishing of the dynamic characteristic model corresponding to multiple thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: obtaining the physical property parameters of the fluid in the compressor of the target vehicle based on the multi-physical field coupling characteristics, and querying the inlet entropy value of the compressor according to the physical property parameters; determining the isentropic compression enthalpy value of the fluid in the compressor according to the inlet entropy value and the outlet pressure of the compressor; and establishing the compressor model of the target vehicle in combination with the fluid mass flow rate in the compressor, the isentropic compression enthalpy value, the isentropic efficiency and the mechanical efficiency of the compressor.

[0009] Through the above technical means, the embodiments of the present invention can establish a compressor model based on the multi-physical field coupling characteristics. By solving the fluid mass flow rate and the compressor power in the compressor of the target vehicle and combining parameters such as the fluid mass flow rate in the compressor, the compressor power, the volumetric efficiency, the isentropic efficiency and the mechanical efficiency of the compressor, etc., the working process of the compressor can be accurately described to analyze the complex working conditions of the compressor, an accurate compressor model can be established, and thus accurate heat source information can be provided for the thermal management of the target vehicle, the system design can be optimized and dynamic control can be supported.

[0010] Optionally, in an embodiment of the present invention, establishing the dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: calculating the superheat zone heat transfer area, the two-phase zone heat transfer area, and the subcooling zone heat transfer area of the condenser of the target vehicle based on the multi-physical field coupling characteristics and the equivalent one-dimensional circular tube of the condenser; dividing the two-phase zone in the condenser into a first target number of partitions according to the two-phase zone heat transfer area of the condenser to calculate the two-phase zone heat transfer amount of the condenser; when the superheat zone heat transfer area, the two-phase zone heat transfer area, and the subcooling zone heat transfer area of the condenser respectively meet the corresponding area requirements, solving the refrigerant side heat transfer amount of the condenser based on the two-phase zone heat transfer amount of the condenser; and establishing the condenser model of the target vehicle in combination with the wall temperature during the heat transfer process of the condenser, the air side heat transfer amount, and the refrigerant side heat transfer amount of the condenser.

[0011] The embodiment of the present invention can establish a condenser model based on the multi-physical field coupling characteristics of the target vehicle. By using the equivalent principle to accurately calculate the refrigerant side heat transfer amount of the condenser, and combining the wall temperature during the heat transfer process of the condenser and the air side heat transfer amount, the heat transfer characteristics of the condenser itself are accurately described, which helps to improve the accuracy of the analysis of the condenser performance and provides accurate heat exchange data for the thermal management of the target vehicle.

[0012] Optionally, in an embodiment of the present invention, establishing the dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: calculating the superheat zone heat transfer area and the two-phase zone heat transfer area of the evaporator of the target vehicle based on the multi-physical field coupling characteristics and the equivalent one-dimensional circular tube of the evaporator; dividing the two-phase zone of the evaporator into a second target number of partitions according to the two-phase zone heat transfer area of the evaporator to calculate the two-phase zone heat transfer amount of the evaporator; when the superheat zone heat transfer area and the two-phase zone heat transfer area of the evaporator respectively meet the corresponding area requirements, solving the refrigerant side heat transfer amount of the evaporator based on the two-phase zone heat transfer amount of the evaporator; and establishing the evaporator model of the target vehicle in combination with the wall temperature during the heat transfer process of the evaporator, the air side heat transfer amount, and the refrigerant side heat transfer amount of the evaporator.

[0013] The embodiment of the present invention can establish an evaporator model based on the multi-physical field coupling characteristics of the target vehicle. By using the equivalent principle to accurately calculate the refrigerant side heat transfer amount of the evaporator, and combining the wall temperature during the heat transfer process of the evaporator and the air side heat transfer amount to analyze the working characteristics of the evaporator during the heat transfer process, it helps to improve the accuracy of the performance analysis of the evaporator, facilitates providing more accurate heat exchange information for the thermal management of the target vehicle, and improves the control accuracy of the thermal management.

[0014] Optionally, in an embodiment of the present invention, establishing the dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: calculating the outlet temperature, pressure, and pressure drop of the expansion valve of the target vehicle based on the multi-physical field coupling characteristics; calculating the flow rate of the expansion valve according to the outlet temperature, pressure, and pressure drop, and establishing the expansion valve model of the target vehicle.

[0015] The embodiment of the present invention can establish an expansion valve model based on the multi-physical field coupling characteristics. By combining the relationship between the inlet information and the outlet information of the expansion valve, the outlet temperature, pressure, and pressure drop of the expansion valve are calculated. Furthermore, the flow rate of the refrigerant controlled by the expansion valve is calculated, accurately reflecting the throttling characteristics and working state of the expansion valve, thereby improving the accuracy of the expansion valve model. Furthermore, accurate refrigerant flow information is provided for the thermal management of the target vehicle, which helps to optimize the performance and control strategy of the thermal management system.

[0016] Optionally, in an embodiment of the present invention, establishing the dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: calculating the superheat zone heat transfer area and the two-phase zone heat transfer area of the battery cooling device of the target vehicle based on the multi-physical field coupling characteristics and the equivalent one-dimensional circular tube of the battery cooling device of the target vehicle; dividing the two-phase zone of the battery cooling device into a third target number of partitions according to the two-phase zone heat transfer area of the battery cooling device to calculate the heat transfer amount in the two-phase zone of the battery cooling device; when the superheat zone heat transfer area and the two-phase zone heat transfer area of the battery cooling device respectively meet the corresponding area requirements, solving the heat transfer amount on the refrigerant side of the battery cooling device based on the heat transfer amount in the two-phase zone of the battery cooling device; combining the wall temperature during the heat transfer process of the battery cooling device, the heat transfer amount on the coolant side, and the heat transfer amount on the refrigerant side of the battery cooling device to establish the battery cooling device model of the target vehicle.

[0017] The embodiment of the present invention can establish a battery cooler model based on the multi-physical field coupling characteristics. By the wall temperature during the heat transfer process of the battery cooling device, the heat transfer amount on the coolant side, and the heat transfer amount on the refrigerant side, the two types of fluid thermal fields during the heat transfer process of the battery cooling device are accurately expressed, which helps to improve the thermal management ability of the target vehicle under multiple physics.

[0018] In the second aspect of the embodiments of the present invention, a collaborative integration device for automotive multi - physical - field thermodynamic components is provided, including: an acquisition module, configured to obtain the multi - physical - field coupling characteristics of a target vehicle based on the electromagnetic field, thermal field, and fluid flow field of the target vehicle; a construction module, configured to establish dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle based on the multi - physical - field coupling characteristics; a management module, configured to construct a thermal management model through the dynamic characteristic models, so as to use the thermal management model to couple and solve the thermal management model of the flow distribution indexes of the multiple thermodynamic components, and control the collaborative operation of the multiple thermodynamic components through predefined energy interaction interfaces between components and the flow distribution indexes.

[0019] Through the above - mentioned technical means, the embodiments of the present invention can establish models corresponding to multiple thermodynamic components based on the multi - physical - field coupling characteristics of the target vehicle, accurately simulate the performance of multiple thermodynamic components under various working conditions, and integrate them into a thermal management model to calculate the flow distribution indexes of multiple thermodynamic components of the target vehicle under multi - physical fields, and control the collaborative operation of multiple thermodynamic components according to these indexes, effectively improving the thermal management performance of the embodiments of the present invention in the face of different actual driving conditions of the target vehicle, enabling precise thermal management of multiple thermodynamic components, greatly improving the energy utilization efficiency of the target vehicle, contributing to improving the endurance of the target vehicle, and thus enhancing the overall performance of the target vehicle.

[0020] Optionally, in an embodiment of the present invention, the construction module includes: a query unit, configured to obtain the physical property parameters of the fluid in the compressor of the target vehicle based on the multi - physical - field coupling characteristics, and query the inlet entropy value of the compressor according to the physical property parameters; a determination unit, configured to determine the isentropic compression enthalpy value of the fluid in the compressor according to the inlet entropy value and the outlet pressure of the compressor; a first construction unit, configured to establish a compressor model of the target vehicle by combining the fluid mass flow rate in the compressor, the isentropic compression enthalpy value, the isentropic efficiency, and the mechanical efficiency of the compressor.

[0021] The embodiments of the present invention can establish a compressor model based on the multi - physical - field coupling characteristics. By solving the fluid mass flow rate and compressor power in the compressor of the target vehicle and combining parameters such as the fluid mass flow rate in the compressor, compressor power, volumetric efficiency, isentropic efficiency, and mechanical efficiency of the compressor, the working process of the compressor can be accurately described to analyze the complex working conditions of the compressor, an accurate compressor model can be established, and thus accurate heat source information can be provided for the thermal management of the target vehicle, the system design can be optimized, and dynamic control can be supported.

[0022] Optionally, in an embodiment of the present invention, the establishing module includes: a first calculation unit configured to calculate the heat exchange area of the superheat zone of the condenser, the heat exchange area of the two-phase zone of the condenser, and the heat exchange area of the subcooling zone of the condenser based on the multi-physical field coupling characteristics and the equivalent one-dimensional circular tube of the condenser of the target vehicle; a first partitioning unit configured to partition the two-phase zone in the condenser into a first target number of partitions according to the heat exchange area of the two-phase zone of the condenser, so as to calculate the heat exchange amount of the two-phase zone of the condenser according to the dryness of the partitions; a first solving unit configured to solve the heat exchange amount on the refrigerant side of the condenser based on the heat exchange amount of the two-phase zone of the condenser when the heat exchange area of the superheat zone of the condenser, the heat exchange area of the two-phase zone of the condenser, and the heat exchange area of the subcooling zone of the condenser respectively meet the corresponding area requirements; a second establishing unit configured to establish a condenser model of the target vehicle by combining the wall temperature during the heat exchange process of the condenser, the heat exchange amount on the air side, and the heat exchange amount on the refrigerant side of the condenser.

[0023] The embodiment of the present invention can establish a condenser model based on the multi-physical field coupling characteristics of the target vehicle. By accurately calculating the heat exchange amount on the refrigerant side of the condenser through the equivalent principle, and combining the wall temperature during the heat exchange process of the condenser and the heat exchange amount on the air side, the heat exchange characteristics of the condenser itself are accurately described, which helps to improve the accuracy of the analysis of the condenser performance and provides accurate heat exchange data for the thermal management of the target vehicle.

[0024] Optionally, in an embodiment of the present invention, the establishing module includes: a second calculation unit configured to calculate the heat exchange area of the superheat zone of the evaporator and the heat exchange area of the two-phase zone of the evaporator based on the multi-physical field coupling characteristics and the equivalent one-dimensional circular tube of the evaporator of the target vehicle; a second partitioning unit configured to partition the two-phase zone of the evaporator into a second target number of partitions according to the heat exchange area of the two-phase zone of the evaporator, so as to calculate the heat exchange amount of the two-phase zone of the evaporator; a second solving unit configured to solve the heat exchange amount on the refrigerant side of the evaporator based on the heat exchange amount of the two-phase zone of the evaporator when the heat exchange area of the superheat zone of the evaporator and the heat exchange area of the two-phase zone of the evaporator respectively meet the corresponding area requirements; a third establishing unit configured to establish an evaporator model of the target vehicle by combining the wall temperature during the heat exchange process of the evaporator, the heat exchange amount on the air side, and the heat exchange amount on the refrigerant side of the evaporator.

[0025] The embodiment of the present invention can establish an evaporator model based on the multi-physical field coupling characteristics of the target vehicle. By accurately calculating the heat exchange amount on the refrigerant side of the evaporator through the equivalent principle, and analyzing the working characteristics of the evaporator during the heat exchange process by combining the wall temperature during the heat exchange process of the evaporator and the heat exchange amount on the air side, it helps to improve the accuracy of the performance analysis of the evaporator, facilitates providing more accurate heat exchange information for the thermal management of the target vehicle, and improves the control accuracy of the thermal management.

[0026] Optionally, in an embodiment of the present invention, the establishing module includes: a third calculation unit configured to calculate the outlet temperature, pressure, and pressure drop of the expansion valve of the target vehicle based on the multi-physical field coupling characteristics; and a fourth establishing unit configured to calculate the flow rate of the expansion valve according to the outlet temperature, pressure, and pressure drop, and establish an expansion valve model of the target vehicle.

[0027] Embodiments of the present invention can establish an expansion valve model based on multi-physical field coupling characteristics. By combining the relationship between the inlet information and the outlet information of the expansion valve, the outlet temperature, pressure, and pressure drop of the expansion valve are calculated. Furthermore, the flow rate of the refrigerant controlled by the expansion valve is calculated, accurately reflecting the throttling characteristics and working state of the expansion valve, thereby improving the accuracy of the expansion valve model. Moreover, accurate refrigerant flow information is provided for the thermal management of the target vehicle, which helps to optimize the performance and control strategy of the thermal management system.

[0028] Optionally, in an embodiment of the present invention, the establishing module includes: a fourth calculation unit configured to calculate the heat transfer area of the superheat zone of the battery cooling device and the heat transfer area of the two-phase zone of the battery cooling device based on the multi-physical field coupling characteristics and the equivalent one-dimensional circular tube of the battery cooling device of the target vehicle; a third partitioning unit configured to partition the two-phase zone of the battery cooling device into a third target number of partitions according to the heat transfer area of the two-phase zone of the battery cooling device to calculate the heat transfer amount of the two-phase zone of the battery cooling device; a third solving unit configured to solve the heat transfer amount on the refrigerant side of the battery cooling device based on the heat transfer amount of the two-phase zone of the battery cooling device when the heat transfer area of the superheat zone of the battery cooling device and the heat transfer area of the two-phase zone of the battery cooling device respectively meet the corresponding area requirements; and a fifth establishing unit configured to establish a battery cooling device model of the target vehicle by combining the wall temperature during the heat transfer process of the battery cooling device, the heat transfer amount on the coolant side, and the heat transfer amount on the refrigerant side of the battery cooling device.

[0029] Embodiments of the present invention can establish a battery cooler model based on multi-physical field coupling characteristics. By the wall temperature during the heat transfer process of the battery cooling device, the heat transfer amount on the coolant side, and the heat transfer amount on the refrigerant side, the two types of fluid thermal fields during the heat transfer process of the battery cooling device are accurately described, which helps to improve the thermal management ability of the target vehicle under multiple physics.

[0030] An embodiment of the third aspect of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to implement the automotive multi-physical field thermodynamics component collaborative integration method as described in the above embodiments.

[0031] In the fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program, and when the program is executed by a processor, the above-mentioned collaborative integration method of automotive multi-physical field thermodynamic components is implemented.

[0032] In the fifth aspect of the embodiments of the present invention, a computer program product is provided, including a computer program. When the computer program is executed, it is used to implement the above-mentioned collaborative integration method of automotive multi-physical field thermodynamic components.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0034] The above-mentioned and / or additional aspects and advantages of the present invention will become apparent and be easily understood from the following description of the embodiments in conjunction with the drawings, where: Figure 1 is a flowchart of a collaborative integration method of automotive multi-physical field thermodynamic components according to an embodiment of the present invention; Figure 2 is a schematic diagram of the compressor power calculation principle according to an embodiment of the present invention; Figure 3 is a schematic diagram of the calculation effect of the heat transfer amount on the refrigeration side of the evaporator according to an embodiment of the present invention; Figure 4 is a schematic diagram of the calculation effect of the heat transfer amount on the refrigeration side of the battery cooler according to an embodiment of the present invention; Figure 5 is a schematic diagram of the system coupling flow distribution calculation according to an embodiment of the present invention; Figure 6 is a flowchart of a collaborative integration method of new energy vehicle multi-physical field thermodynamic components according to an embodiment of the present invention; Figure 7 is a schematic diagram of the wall temperature balance calculation of key thermodynamic components according to an embodiment of the present invention; Figure 8 is a schematic diagram of the refrigerant side area calculation of key thermodynamic components according to an embodiment of the present invention; Figure 9 is a schematic diagram of the structure of a collaborative integration device of automotive multi-physical field thermodynamic components according to an embodiment of the present invention; Figure 10 is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention.

[0035] Reference Signs: 10 - Automotive Multi - physical - field Thermodynamic Component Collaborative Integration Device: 100 - Acquisition Module, 200 - Establishment Module, 300 - Management Module; 1001 - Memory, 1002 - Processor, and 1003 - Communication Interface. Detailed Implementation Manner

[0036] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] The automotive multi - physical - field thermodynamic component collaborative integration method and device according to the embodiments of the present invention will be described below with reference to the accompanying drawings. In view of the problems in the related art mentioned in the above - mentioned background technology, that is, the thermal management system of new - energy vehicles ignores the different performance requirements of the thermal management system under different driving conditions during actual driving, and the focus of thermal management is also different under the influence of different factors, making it difficult to accurately manage the thermal management of new - energy vehicles under different working conditions, and the energy utilization efficiency also needs to be improved. The present invention provides an automotive multi - physical - field thermodynamic component collaborative integration method. In this method, models corresponding to multiple thermodynamic components can be established based on the multi - physical - field coupling characteristics of the target vehicle and integrated into a thermal management model to calculate the flow distribution indexes of multiple thermodynamic components of the target vehicle under multi - physical - fields, and multiple thermodynamic components can be controlled to operate collaboratively according to these indexes. Thus, by understanding the changes in factors such as temperature distribution, heat - flow transfer, and cooling efficiency of thermodynamic components under different conditions, accurately simulating the performance of multiple thermodynamic components under various working conditions and modeling multiple thermal management models, and then integrating them into a thermal management model, the thermal management performance of the present invention in the face of different actual driving conditions of the target vehicle is effectively improved, achieving accurate thermal management of multiple thermodynamic components, greatly improving the energy utilization efficiency of the target vehicle, helping to improve the endurance of the target vehicle, and thus enhancing the overall performance of the target vehicle; and using the model simulation characteristics of multiple thermodynamic components in the present invention, various solutions of the thermal management system can be compared and evaluated during the design stage, so as to find the optimal solution, which can significantly reduce the cost and time of actual testing in the later stage and improve the development efficiency. Thus, the problems in the related technology, such as the thermal management system of new - energy vehicles ignoring the different performance requirements of the thermal management system under different driving conditions during actual driving, and the focus of thermal management being different under the influence of different factors, making it difficult to accurately manage the thermal management of new - energy vehicles under different working conditions, and the energy utilization efficiency also needing to be improved, are solved.

[0038] Specifically, Figure 1 It is a flowchart of an automotive multi - physical - field thermodynamic component collaborative integration method provided by the embodiments of the present invention.

[0039] As Figure 1 shown, the collaborative integration method for multi-physical field thermodynamic components of the vehicle includes the following steps: In step S101, based on the electromagnetic field, thermal field, and fluid flow field of the target vehicle, the multi-physical field coupling characteristics of the target vehicle are obtained.

[0040] It can be understood that the target vehicle here can be understood as various new energy vehicles such as pure electric vehicles, hybrid vehicles, and fuel cell vehicles. Due to the particularity of their power systems, a thermal management system is required to ensure that key thermodynamic components such as batteries and motors maintain good working conditions under different environments and operating conditions, improving the overall vehicle performance, safety, and endurance performance.

[0041] In some embodiments, the mutual coupling of the electromagnetic field, thermal field, and fluid flow field will have various effects. Therefore, when the present invention coordinates the multi-physical field thermodynamic components of the target vehicle, it can be achieved by comprehensively considering the coupling characteristics between the electromagnetic field, thermal field, and fluid flow field of the target vehicle, ensuring that the best thermal management can be carried out under the interaction of multiple physical fields in the target vehicle.

[0042] Among them, the electromagnetic field here can be understood as the action of electromagnetic force generated by motors, batteries, and various electronic devices on surrounding objects during the operation of new energy vehicles. The thermal field here can be understood as the thermal field formed by the temperature change at a point due to heat generated by batteries, motors, power electronic devices, etc. during the operation of new energy vehicles. The fluid flow field here can be understood as the flow of some liquids in new energy vehicles and the flow of the surrounding air when the vehicle is moving.

[0043] When there are multiple physical fields in the target vehicle, such as the electromagnetic field, thermal field, and fluid flow field, etc., there will be interactions and mutual influences between multiple physical fields. The multi-physical field coupling characteristics of the target vehicle here refer to the interactions and mutual influences generated between these multiple physical fields. For example, a change in the electromagnetic field may cause heating, which in turn affects the thermal field distribution; a change in the thermal field will affect the physical properties of the fluid, thus changing the fluid flow field, etc.

[0044] For example, when the new energy vehicle is an electric vehicle, the motor and battery may generate resistance heat due to current passing through the conductor during operation, causing the temperature of the components to rise, resulting in the phenomenon of electromagnetic heat generation; and the change in temperature will affect the electromagnetic properties of the material, such as resistivity, magnetic permeability, etc., and then affect the electromagnetic field distribution, thus forming electromagnetic-thermal coupling.

[0045] For another example, when a new energy vehicle uses a coolant to remove the heat generated by components such as the battery and the motor, the increase in the component temperature will raise the temperature of the coolant, resulting in changes in parameters such as the density and viscosity of the coolant, thereby affecting the flow characteristics of the coolant; and the change in the coolant flow state will in turn affect the heat dissipation effect of the components, forming a thermal-fluid coupling.

[0046] For yet another example, the heat generated by the motor may be transferred to the surrounding coolant through heat conduction, causing the temperature of the coolant to rise, resulting in a change in the flow state of the coolant, forming an electromagnetic-fluid coupling.

[0047] The embodiments of the present invention can obtain the electromagnetic field, thermal field, and fluid flow field existing in the target vehicle and analyze the multi-physical field coupling characteristics, comprehensively considering the influence of various factors on the thermal management system, which helps to improve the control accuracy, achieve precise regulation of the vehicle's thermal state, and at the same time provide more basis for fault diagnosis and prediction, thereby enhancing the overall performance, safety, and reliability of the vehicle.

[0048] Step S102, based on the multi-physical field coupling characteristics, establish dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle.

[0049] In some other embodiments, in order to facilitate the thermal management of multiple thermodynamic components in the target vehicle, the embodiments of the present invention can respectively construct dynamic characteristic models corresponding to multiple thermodynamic components in the target vehicle, so as to understand the characteristics of each thermodynamic component according to these models and realize the thermal management of multiple thermodynamic components of the target vehicle through these models.

[0050] For example, the present invention can, but is not limited to, model thermodynamic components such as compressors, condensers, evaporators, expansion valves, and battery coolers in new energy vehicles based on the multi-physical field coupling characteristics, so as to support the switching between low-temperature heating and high-temperature refrigeration modes, and at the same time cover the multi-physical field coupling characteristics of electricity, heat, and flow in new energy vehicles.

[0051] The embodiments of the present invention can establish dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics, such as models corresponding to thermodynamic components such as compressors, condensers, evaporators, expansion valves, and battery coolers, so as to achieve the thermal management of the target vehicle while covering the multi-physical field coupling characteristics of electricity, heat, and flow in new energy vehicles.

[0052] Optionally, in an embodiment of the present invention, based on the characteristics of multi-physical field coupling, a dynamic characteristic model corresponding to multiple thermodynamic components of the target vehicle is established, including: based on the characteristics of multi-physical field coupling, obtaining the physical property parameters of the fluid in the compressor of the target vehicle, and querying the inlet entropy value of the compressor according to the physical property parameters; determining the isentropic compression enthalpy value of the fluid in the compressor according to the inlet entropy value and the outlet pressure of the compressor; combining the fluid mass flow rate in the compressor, the isentropic compression enthalpy value, the isentropic efficiency and the mechanical efficiency of the compressor to establish a compressor model of the target vehicle.

[0053] It can be understood that the compressor in a new energy vehicle can compress low-temperature and low-pressure superheated gas into high-temperature and high-pressure superheated gas, and it is an essential power component in the thermal management system.

[0054] In some embodiments, the present invention can model the compressor based on the characteristics of multi-physical field coupling. Considering that the compressor mainly compresses and transports fluids and consumes a certain amount of electrical energy during work. Therefore, the embodiments of the present invention can model it by solving the fluid mass flow rate in the compressor and the electrical power consumed by the compressor on the basis of considering the influence of volumetric efficiency, isentropic efficiency, and mechanical efficiency.

[0055] Among them, the mass flow rate of the fluid in the compressor, that is, the refrigerant, can be calculated but not limited to by the following formula:

[0056] Among them, is the compressor mass flow rate, ; is the density of the refrigerant at the compressor inlet, ; disp is the compressor displacement, ; N is the compressor speed, ; is the volumetric efficiency of the compressor.

[0057] Furthermore, Figure 2 is a schematic diagram of the compressor power calculation principle in an embodiment of the present invention. As Figure 2 shown, in the embodiments of the present invention, when calculating the compressor electrical power, it can be but not limited to first obtaining the entropy value of the compressor inlet state, that is, the inlet entropy value, according to the physical property parameters of the fluid in the compressor, that is, the physical property parameters of the refrigerant, such as inlet pressure, inlet enthalpy value and other parameters, based on the corresponding two-dimensional table; then, according to the obtained inlet entropy value, the compressor outlet pressure and the corresponding two-dimensional table, query and obtain the isentropic compression enthalpy value, that is, the enthalpy value of the refrigerant at this inlet entropy value and outlet pressure; finally, according to the isentropic compression enthalpy value, combined with the fluid mass flow rate, isentropic efficiency, mechanical efficiency, etc., the compressor power can be calculated, and the formula can be but not limited to expressed as follows:

[0058]

[0059] Among them, is the power consumption of the compressor, with the unit of ; is the enthalpy increase at the inlet and outlet of the compressor, with the unit of ; is the specific enthalpy at the outlet of the compressor, with the unit of ; is the specific enthalpy at the inlet of the compressor, with the unit of ; is the isentropic enthalpy obtained by looking up according to the inlet pressure, inlet enthalpy value, and outlet pressure of the compressor, with the unit of , is the mechanical efficiency, is the isentropic efficiency, is the mass flow rate of the compressor.

[0060] In the embodiments of the present invention, based on the characteristics of multi-physical field coupling, a compressor model can be established. By solving the fluid mass flow rate and compressor power in the compressor of the target vehicle and combining parameters such as the fluid mass flow rate, compressor power, volumetric efficiency, isentropic efficiency, and mechanical efficiency in the compressor, the working process of the compressor can be accurately described to analyze the complex working conditions of the compressor, an accurate compressor model can be established, and then accurate heat source information can be provided for the thermal management of the target vehicle, the system design can be optimized, and dynamic control can be supported.

[0061] Optionally, in an embodiment of the present invention, based on the characteristics of multi-physical field coupling, dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle are established, including: calculating the heat transfer area in the superheat zone, the heat transfer area in the two-phase zone, and the heat transfer area in the subcooling zone of the condenser based on the characteristics of multi-physical field coupling and the equivalent one-dimensional circular tube of the condenser of the target vehicle; dividing the two-phase zone in the condenser into a first target number of partitions according to the heat transfer area in the two-phase zone of the condenser to calculate the heat transfer amount in the two-phase zone of the condenser according to the dryness of the partitions; when the heat transfer area in the superheat zone, the heat transfer area in the two-phase zone, and the heat transfer area in the subcooling zone of the condenser respectively meet the corresponding area requirements, solving the refrigerant-side heat transfer amount of the condenser based on the heat transfer amount in the two-phase zone of the condenser; combining the wall temperature during the heat transfer process of the condenser, the air-side heat transfer amount, and the refrigerant-side heat transfer amount of the condenser to establish a condenser model of the target vehicle.

[0062] Those skilled in the art of this technology can understand that the condenser is an important heat-releasing component in the air-conditioning circulation system. After the compressor discharges high-temperature and high-pressure refrigerant gas, it is necessary to cool and condense the high-temperature and high-pressure refrigerant gas discharged by the compressor into a liquid through the condenser, releasing heat, so as to ensure the normal operation of the refrigeration cycle of the vehicle. Moreover, the performance of the condenser will also affect the working temperatures of other components of the vehicle, such as the battery, motor, etc., and plays a key regulatory role in the overall thermal management of the vehicle.

[0063] In some embodiments, the present invention can also model the condenser based on the characteristics of multi-physics field coupling. When the condenser condenses the high-temperature and high-pressure superheated gas at the compressor outlet into a low-temperature and high-pressure subcooled liquid during operation, it is divided into air-side heat transfer and refrigerant-side heat transfer, and heat transfer is carried out through the condenser wall surface, and coupling is based on the wall temperature.

[0064] Among them, the condenser wall temperature affects the heat exchange efficiency between it and the surrounding environment. Too high or too low wall temperature will affect the overall performance of the thermal management system. The air-side heat transfer amount is directly related to the cooling effect of the vehicle air-conditioning system on the in-vehicle air and the heat dissipation capacity of components such as the battery and motor. If the air-side heat transfer amount is insufficient, it will lead to poor in-vehicle cooling effect or overheating of components. The refrigerant-side heat transfer amount determines the condensation effect of the refrigerant in the condenser, and thus affects the efficiency and performance of the refrigeration cycle, which is crucial for maintaining the thermal balance of the vehicle.

[0065] Therefore, the embodiments of the present invention can solve the wall temperature, air-side heat transfer amount and refrigerant-side heat transfer amount of the condenser of the target vehicle during the heat transfer process based on the characteristics of multi-physics field coupling, so as to establish a condenser model of the target vehicle.

[0066] First of all, the formula for solving the condenser wall temperature can be but is not limited to being expressed as follows:

[0067] Among them, is the refrigerant-side heat transfer amount of the condenser, with the unit of , is the air-side heat transfer amount of the condenser, with the unit of , is the mass of the condenser, with the unit of , is the specific heat at constant pressure of the condenser wall surface, with the unit of .

[0068] Furthermore, the formula for solving the air-side heat transfer amount can be but is not limited to being expressed as follows:

[0069] Among them, is the air-side inlet temperature of the condenser, with the unit of , is the condenser wall temperature, with the unit of , is the air heat transfer coefficient, is the heat transfer area on the air side of the condenser, with the unit of , is the fin surface efficiency of the condenser, is the heat transfer correction coefficient on the air side of the condenser.

[0070] Furthermore, considering that the refrigerant in the condenser involves a superheat zone (single-phase zone, gas phase), a two-phase zone, and a subcooling zone (single-phase zone, liquid phase), and the key lies in the calculation of the heat transfer area in the single-phase zone (superheat zone) and the two-phase zone. To ensure both calculation accuracy and speed at the same time, the embodiments of the present invention can, but are not limited to, equivalent the condenser to a one-dimensional circular tube, first calculate the heat transfer area in the superheat zone and the heat transfer area in the two-phase zone, then the heat transfer area

[0071] in the subcooling zone is equal to the total area minus the areas of the first two phase zones.

[0071] At the same time, when calculating the heat transfer amount in the two-phase zone, to ensure the calculation accuracy, the embodiments of the present invention can, but are not limited to, divide the two-phase zone into a first target number of partitions according to the heat transfer area in the two-phase zone, such as 10 partitions, etc. The dryness of each partition takes the average value of the inlet and outlet of each partition, and the change in dryness is 0.1. Then, the heat transfer amount of each partition is calculated in turn, and finally, the heat transfer amounts of each partition are added to obtain the heat transfer amount in the two-phase zone. It should be noted that the embodiments of the present invention can also add the determination of the condenser inlet state, that is, when the condenser inlet state is the two-phase zone, the heat transfer and pressure drop calculation in the two-phase zone can be directly entered.

[0072] At the same time, considering the possible errors in the calculation process, the embodiments of the present invention can also determine whether the heat transfer area in the superheat zone of the condenser, the heat transfer area in the two-phase zone of the condenser, and the heat transfer area in the subcooling zone of the condenser respectively meet the corresponding area requirements, that is, compare the heat transfer amount of each phase zone with the theoretical enthalpy difference energy. If the heat transfer amount of this part is greater than the theoretical enthalpy difference energy, that is, the heat transfer area is too large, the area should be reduced. If the heat transfer amount of this part is less than the theoretical enthalpy difference energy, that is, the heat transfer area is too small, the area needs to be increased. Calculate in this way until the heat transfer in this part reaches thermal equilibrium, so as to ensure the calculation accuracy of the heat transfer amount on the refrigerant side of the condenser.

[0073] The final formula for solving the heat transfer amount on the refrigeration side can, but is not limited to, be expressed as follows:

[0074] Wherein, is the refrigerant inlet temperature of the condenser, with the unit of , is the condenser wall temperature, with the unit of , is the heat transfer coefficient on the refrigerant side of the condenser, with the unit of , is the heat transfer area of the superheat zone or two-phase zone or subcooling zone on the refrigerant side of the condenser, with the unit of , is the correction coefficient of the heat transfer amount on the refrigerant side of the condenser.

[0075] It should be noted that because the calculation formulas are the same, the heat transfer amounts on the refrigerant side in the superheat zone or two-phase zone or subcooling zone of the condenser are not distinguished in the embodiments of the present invention. Only S ref is used to represent the heat transfer area of the superheat zone or two-phase zone or subcooling zone on the refrigerant side of the condenser. During actual calculation, the heat transfer areas of the superheat zone, two-phase zone, and subcooling zone on the refrigerant side of the condenser need to be substituted respectively to obtain the heat transfer amounts on the refrigerant side in the superheat zone, two-phase zone, and subcooling zone of the condenser, and then the three are added together to obtain the total heat transfer amount on the refrigerant side of the condenser.

[0076] The embodiments of the present invention can establish a condenser model based on the multi-physical field coupling characteristics of the target vehicle. By the equivalent principle, the heat transfer amount on the refrigerant side of the condenser is accurately calculated, and combined with the wall temperature and the heat transfer amount on the air side during the heat exchange process of the condenser, the heat exchange characteristics of the condenser itself are accurately described, which helps to improve the accuracy of the analysis of the condenser performance and provides accurate heat exchange data for the thermal management of the target vehicle.

[0077] Optionally, in an embodiment of the present invention, based on the multi-physical field coupling characteristics, dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle are established, including: calculating the superheat zone heat transfer area and the two-phase zone heat transfer area of the evaporator based on the multi-physical field coupling characteristics and the equivalent one-dimensional circular tube of the evaporator of the target vehicle; dividing the evaporated two-phase zone into a second target number of partitions according to the two-phase zone heat transfer area of the evaporator to calculate the two-phase zone heat transfer amount of the evaporator; when the superheat zone heat transfer area and the two-phase zone heat transfer area of the evaporator respectively meet the corresponding area requirements, solving the refrigerant side heat transfer amount of the evaporator based on the two-phase zone heat transfer amount of the evaporator; combining the wall temperature, the heat transfer amount on the air side, and the refrigerant side heat transfer amount of the evaporator during the heat exchange process to establish an evaporator model of the target vehicle.

[0078] It can be understood that the evaporator is a key thermodynamic component in the refrigeration cycle of the vehicle thermal management system. It absorbs heat by evaporating the refrigerant or the absorbed air, cools down the air flowing through the evaporator, and realizes the air conditioning in the vehicle. In addition, the evaporator also works in coordination with other vehicle thermal management components, such as cooperating with other components of the air conditioning system to accurately control the temperature and humidity in the vehicle to meet the thermal management requirements of the vehicle under different working conditions and improve the ride comfort and the overall performance of the vehicle.

[0079] In some embodiments, the present invention can model the evaporator based on the multi-physics field coupling characteristics. The principle of the evaporator is to absorb heat from the air and send the cooled air into the cabin to meet the refrigeration needs, wherein the heat exchange on the air side and the heat exchange on the refrigerant side are both achieved through the wall surface.

[0080] Among them, the wall temperature of the condenser affects the heat exchange efficiency between it and the surrounding environment. Too high or too low wall temperature will affect the overall performance of the thermal management system. The amount of heat exchanged on the air side is directly related to the cooling effect of the vehicle air conditioning system on the air inside the vehicle and the heat dissipation capacity of components such as batteries and motors. If the amount of heat exchanged on the air side is insufficient, it will lead to poor cooling effect or overheating of components inside the vehicle. The amount of heat exchanged on the refrigerant side determines the condensation effect of the refrigerant in the condenser, which in turn affects the efficiency and performance of the refrigeration cycle, and is crucial to maintaining the thermal balance of the vehicle.

[0081] Therefore, the embodiment of the present invention can establish the evaporator model of the target vehicle by solving the wall temperature, air side heat exchange and refrigerant side heat exchange of the evaporator of the target vehicle during the heat exchange process.

[0082] First, the wall temperature solution formula of the evaporator is the same as that of the condenser, which can be expressed as follows but is not limited to:

[0083] in, is the heat exchange rate of the refrigerant side of the evaporator, in units of , is the heat exchange rate of the air side of the evaporator, in , is the mass of the evaporator, in units of , is the constant pressure specific heat of the evaporator wall, in units of .

[0084] And, the calculation formula of the heat exchange of the air side of the evaporator can be, but is not limited to, expressed as follows:

[0085] in, is the total heat exchange on the air side of the evaporator, in ; is the evaporator fin efficiency; is the evaporator air side convection heat transfer coefficient, in ; is the convective heat transfer area on the air side of the evaporator, in ; is the evaporator wall temperature in ; is the wet air side inlet temperature, in ; is the mass flow rate of the condensate water, with the unit of ; is the latent heat of vaporization of the condensate water, with the unit of .

[0086] In addition, the heat transfer on the refrigerant side of the evaporator also involves a two-phase region and a superheat region. Therefore, in the embodiments of the present invention, the evaporator can also be equivalently regarded as a one-dimensional circular tube, and then the heat transfer areas of the single-phase region (superheat region) and the two-phase region of the evaporator are calculated.

[0087] After calculating the heat transfer area of the two-phase region, in the embodiments of the present invention, the two-phase region of the evaporator can be divided into a second target number of sub-regions, such as 8 sub-regions. The dryness of each sub-region is also taken as the average value of the inlet and outlet of each sub-region. Among them, the inlet dryness is determined by the ratio of the difference between the inlet enthalpy value and the saturated liquid enthalpy value under the inlet conditions to the difference between the saturated gas and saturated liquid enthalpy values under the inlet conditions. The dryness change of each sub-region is 0.125. Then, the heat transfer calculations of each sub-region are carried out in turn, and finally, the heat transfer amounts of each sub-region are added to obtain the heat transfer amount of the two-phase region of the evaporator.

[0088] Considering the possible errors in the calculation process, in the embodiments of the present invention, it can also be judged whether the heat transfer areas of the superheat region and the two-phase region of the evaporator respectively meet the corresponding area requirements, that is, comparing the heat transfer amount of each phase region with the theoretical enthalpy difference energy. If the heat transfer amount of this part is greater than the theoretical enthalpy difference energy, that is, the heat transfer area is too large, the area should be reduced. If the heat transfer amount of this part is less than the theoretical enthalpy difference energy, that is, the heat transfer area is too small, the area needs to be increased. This method is used for calculation until the heat transfer of this part reaches thermal equilibrium, so as to ensure the calculation accuracy of the heat transfer amount on the refrigerant side of the evaporator.

[0089] Then the final heat transfer calculation formula on the refrigerant side can be but not limited to be expressed as:

[0090] Among them, is the total heat transfer amount on the refrigerant side of the evaporator, with the unit of ; is the convective heat transfer coefficient on the refrigerant side, with the unit of ; is the convective heat transfer area of the superheat region or the two-phase region on the refrigerant side in the evaporator, with the unit of ; is the refrigerant temperature in the evaporator, with the unit of ; is the wall temperature of the evaporator, with the unit of .

[0091] Similarly, because the calculation formulas are the same, in the embodiments of the present invention, the heat transfer amount on the refrigeration side in the superheat zone or two-phase zone of the evaporator is not distinguished. Instead, in the formula, represents the heat transfer area of the refrigerant side in the superheat zone or two-phase zone of the evaporator. During actual calculation, the heat transfer areas of the refrigerant side in the superheat zone and two-phase zone of the evaporator need to be substituted respectively to obtain the heat transfer amounts on the refrigeration side in the superheat zone and two-phase zone of the condenser, and then the two are added together to obtain the total heat transfer amount on the refrigeration side of the evaporator.

[0092] Additionally, to verify the accuracy of the heat transfer amount calculation method on the refrigeration side proposed by the present invention, the present invention uses simulation software and the heat transfer amount calculation method on the refrigeration side proposed by the present invention to simulate and calculate the heat transfer amount on the refrigeration side of the evaporator under a certain test condition. Figure 3 is a schematic diagram of the calculation effect of the heat transfer amount on the refrigeration side of the evaporator in an embodiment of the present invention. The average error between the simulated calculation result of the heat transfer amount on the refrigeration side of the evaporator of the present invention and the actual heat transfer amount on the refrigeration side of the evaporator under the test condition is 1.2%.

[0093] The embodiments of the present invention can establish an evaporator model based on the multi-physical field coupling characteristics of the target vehicle. By accurately calculating the heat transfer amount on the refrigeration side of the evaporator through the equivalent principle, and analyzing the working characteristics of the evaporator during the heat transfer process in combination with the wall temperature and the heat transfer amount on the air side of the evaporator, it helps to improve the accuracy of its performance analysis, facilitates providing more accurate heat exchange information for the thermal management of the target vehicle, and improves the control accuracy of the thermal management.

[0094] Optionally, in an embodiment of the present invention, based on the multi-physical field coupling characteristics, dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle are established, including: calculating the outlet temperature, pressure, and pressure drop of the expansion valve of the target vehicle based on the multi-physical field coupling characteristics; calculating the flow rate of the expansion valve according to the outlet temperature, pressure, and pressure drop, and establishing an expansion valve model of the target vehicle.

[0095] It can be understood that in the entire air-conditioning system, the electronic expansion valve plays an important role. The air-conditioning system controls the flow rate of the refrigerant through the expansion valve to adjust the refrigeration capacity of the refrigeration system, that is, throttling and depressurizing the high-pressure liquid refrigerant coming out of the condenser to make it a low-pressure liquid refrigerant, and then entering the evaporator to evaporate and absorb heat. In this process, the expansion valve mainly is. The expansion valve itself does not have additional energy input to generate heat. When the refrigerant passes through the expansion valve, the change in its internal energy is mainly due to the decrease in enthalpy caused by the pressure reduction, rather than due to the generation of heat. This decrease in enthalpy enables the refrigerant to absorb more heat in the evaporator, thereby achieving the refrigeration effect.

[0096] In some other embodiments, considering the important role of the electronic expansion valve in the entire air-conditioning cycle, the present invention can, based on the characteristics of multi-physical field coupling, calculate the outlet temperature, pressure, and pressure drop through the mass flow rate, pressure, enthalpy value, and opening degree at the inlet of the expansion valve, and then calculate the refrigerant flow rate controlled by the expansion valve based on the outlet temperature, pressure, and pressure drop, thereby establishing an expansion valve model for the target vehicle.

[0097] Among them, the process of calculating the outlet temperature, pressure, and pressure drop through the mass flow rate, pressure, enthalpy value, and opening degree at the inlet of the expansion valve can be calculated according to various existing formulas, and the embodiments of the present invention do not make specific limitations.

[0098] The formula for calculating the refrigerant flow rate controlled by the expansion valve based on the outlet temperature, pressure, and pressure drop can be but is not limited to being expressed as follows:

[0099] Among them, C q is the pressure drop coefficient, and generally a fixed value of 0.7 can be taken; A is the cross-sectional area, with the unit of ; is the pressure drop, with the unit of ; is the inlet density, with the unit of .

[0100] The embodiments of the present invention can establish an expansion valve model based on the characteristics of multi-physical field coupling. By combining the relationship between the inlet information and the outlet information of the expansion valve, the outlet temperature, pressure, and pressure drop of the expansion valve are calculated. Furthermore, the refrigerant flow rate controlled by the expansion valve is calculated, accurately reflecting the throttling characteristics and working state of the expansion valve, thereby improving the accuracy of the expansion valve model, and further providing accurate refrigerant flow rate information for the thermal management of the target vehicle, which helps to optimize the performance and control strategy of the thermal management system.

[0101] Optionally, in an embodiment of the present invention, based on the characteristics of multi-physical field coupling, dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle are established, including: calculating the heat transfer area of the overheat zone of the battery cooling device and the heat transfer area of the two-phase zone of the battery cooling device based on the characteristics of multi-physical field coupling and the equivalent one-dimensional circular tube of the battery cooling device of the target vehicle; dividing the two-phase zone of the battery cooling device into a third target number of partitions according to the heat transfer area of the two-phase zone of the battery cooling device to calculate the heat transfer amount of the two-phase zone of the battery cooling device; when the heat transfer area of the overheat zone of the battery cooling device and the heat transfer area of the two-phase zone of the battery cooling device respectively meet the corresponding area requirements, solving the heat transfer amount on the refrigerant side of the battery cooling device based on the heat transfer amount of the two-phase zone of the battery cooling device; combining the wall temperature during the heat transfer process of the battery cooling device, the heat transfer amount on the coolant side, and the heat transfer amount on the refrigerant side of the battery cooling device to establish a battery cooling device model of the target vehicle.

[0102] It can be understood that the battery cooler is a key thermodynamic component specifically used to control the battery temperature in the vehicle thermal management system. It can dissipate the excess heat generated by the battery through heat exchange with the battery to prevent the battery from overheating. In addition, the battery cooler can also work in coordination with other components (such as radiators, air conditioning systems, etc.) in the vehicle thermal management system to jointly maintain the overall thermal balance of the vehicle to adapt to different driving conditions and ambient temperatures.

[0103] Among them, the wall temperature of the battery cooler during the heat transfer process is a key parameter of heat transfer. Its level directly affects the heat transfer efficiency between the battery and the cooling medium. An appropriate wall temperature is a prerequisite for maintaining the appropriate operating temperature of the battery; the heat transfer amount on the air side affects the heat dissipation capacity of the cooler, and the heat transfer amount on the air side can be adjusted according to the vehicle working conditions to prevent the battery from overheating or overcooling. The heat transfer amount on the refrigerant side reflects the ability of the battery heat to be transferred to the refrigerant. Precise control of this heat transfer amount can effectively adjust the battery cooling degree, ensure the battery performance and life, and ensure the stable operation of the vehicle thermal management system.

[0104] In some embodiments, the present invention can solve the wall temperature, the heat transfer amount on the coolant side, and the heat transfer amount on the refrigerant side of the battery cooling device of the target vehicle during the heat transfer process based on the characteristics of multi-physical field coupling, so as to establish a battery cooling device model of the target vehicle.

[0105] The wall temperature balance of the battery cooler is the same as that of the condenser and the evaporator. Therefore, its solution method is the same as that of the wall temperature of the condenser and the evaporator. The formula can be but is not limited to being expressed as follows:

[0106] Among them, is the heat transfer amount on the refrigerant side of the battery cooler, and the unit is , is the heat transfer quantity on the coolant side of the battery cooler, with the unit of , is the mass of the battery cooler, with the unit of , is the specific heat at constant pressure of the battery cooler wall, with the unit of .

[0107] Furthermore, the solution formula for the heat transfer quantity on the coolant side can be but is not limited to being expressed as follows:

[0108] Wherein, is the total heat transfer quantity on the coolant side of the battery cooler, with the unit of W; is the convective heat transfer coefficient on the coolant side of the battery cooler, with the unit of ; is the convective heat transfer area on the air side of the battery cooler, with the unit of ; is the wall temperature of the battery cooler, with the unit of ; is the inlet temperature on the moist air side of the battery cooler, with the unit of .

[0109] In addition, during the process of solving the heat transfer quantity on the refrigerant side of the battery cooler, the embodiments of the present invention can also equivalently consider it as a one-dimensional circular tube, including calculations in the single-phase region (superheat region) and the two-phase region, and adopt the same heat transfer area calculation method as that of the evaporator and condenser to determine the heat transfer areas in the single-phase region (superheat region) and the two-phase region.

[0110] In the embodiments of the present invention, the two-phase region of the battery cooler can be but is not limited to being divided into a third target number of partitions, such as 8 partitions. Each part is considered to have a dryness change of 0.125. Then, according to the dryness of each part, the physical property parameters at the inlet and outlet are obtained, and the average value is used for calculation. Among them, the dryness also uses the average value of the dryness at the inlet and outlet of each part as a parameter to participate in the calculation to calculate the heat transfer quantity of each partition, and finally, the heat transfer quantities of each partition are added to obtain the heat transfer quantity of the two-phase region of the battery cooler.

[0111] It should be noted that the first target number, the second target number, and the third target number in the embodiments of the present invention can all be adjusted and determined by those skilled in the art according to the actual situation and actual needs, such as 12, 14, etc. The embodiments of the present invention only make exemplary descriptions and do not make specific limitations.

[0112] Next, similarly determine whether the heat transfer areas of the overheat zone and the two-phase zone of the battery cooler respectively meet the corresponding area requirements. If the heat transfer in this part is greater than the theoretical enthalpy difference energy, that is, the heat transfer area is too large, the area should be reduced. If the heat transfer in this part is less than the theoretical enthalpy difference energy, that is, the heat transfer area is too small, the area needs to be increased. Calculate using this method until the heat transfer in this part reaches thermal equilibrium, so as to ensure the calculation accuracy of the refrigerant-side heat transfer of the battery cooler.

[0113] Then the final formula for the refrigerant-side heat transfer can be but is not limited to being expressed as follows:

[0114] Among them, is the total refrigerant-side heat transfer of the battery cooler, with the unit of ; is the convective heat transfer coefficient on the refrigerant side of the battery cooler, with the unit of ; is the convective heat transfer area of the single-phase zone or the two-phase zone on the refrigerant side of the battery cooler, with the unit of ; is the refrigerant temperature in the battery cooler, ; is the wall temperature of the battery cooler, with the unit of .

[0115] Still the same as before, because the calculation formulas are the same, so in the embodiments of the present invention, the refrigerant-side heat transfer in the overheat zone or the two-phase zone of the battery cooler is not distinguished. It is only in the formula that B ref represents the heat transfer area of the overheat zone or the two-phase zone on the refrigerant side of the battery cooler. During actual calculation, the heat transfer areas of the overheat zone and the two-phase zone on the refrigerant side of the battery cooler need to be substituted in respectively to obtain the refrigerant-side heat transfer of the overheat zone and the two-phase zone of the battery cooler, and then add the two to obtain the total refrigerant-side heat transfer of the evaporator.

[0116] Additionally, Figure 4 is a schematic diagram of the calculation effect of the refrigerant-side heat transfer of the battery cooler in an embodiment of the present invention. The average error between the simulated calculation result of the refrigerant-side heat transfer of the battery cooler of the present invention and the actual refrigerant-side heat transfer of the battery cooler under test conditions is 1.2%.

[0117] The embodiments of the present invention can establish a battery cooler model based on the characteristics of multi-physical field coupling. Through the wall temperature, the coolant-side heat transfer, and the refrigerant-side heat transfer of the battery cooling device during the heat transfer process, the two types of fluid thermal fields of the battery cooling device during the heat transfer process can be accurately expressed, which helps to improve the thermal management ability of the target vehicle under multiple physics.

[0118] Step S103: Construct a thermal management model through a dynamic characteristic model to use the thermal management model to couple and solve the flow distribution indexes of multiple thermodynamic components, and control the coordinated operation of multiple thermodynamic components through predefined energy interaction interfaces and flow distribution indexes between components.

[0119] As a possible implementation method, after the dynamic characteristic models corresponding to multiple thermodynamic components are established, the embodiments of the present invention can integrate these multiple dynamic characteristic models into a thermal management model, which can be used alone or embedded in the thermal management system of the target vehicle.

[0120] Then, through this thermal management model, the embodiments of the present invention can couple and solve the optimal flow distribution indexes of multiple thermodynamic components of the target vehicle under multiple physical fields, and then can send the optimal flow distribution indexes to the corresponding thermodynamic components through instructions, so as to control the coordinated operation of multiple thermodynamic components through predefined energy interaction interfaces and the flow distribution indexes.

[0121] Among them, the predefined energy interaction interfaces between components here refer to the connection points or mechanisms predefined for energy (such as heat energy) transfer and exchange between different thermodynamic components. These interfaces allow heat to be transferred from one component to another, thereby achieving the overall energy balance and thermal management of the system.

[0122] For example, Figure 5 is a schematic diagram of the system coupling flow distribution calculation of an embodiment of the present invention. As Figure 5 shown, the embodiments of the present invention can standardize the input and output interfaces of each component. Each component has at least inlet pressure, inlet enthalpy value, mass flow rate, outlet pressure, outlet enthalpy value, and mass flow rate, and performs sequential splicing to achieve model time series simulation.

[0123] Among them, the high-pressure pressure at the compressor outlet is determined by the superheater at the condenser outlet, and can but is not limited to using PI control; the flow distribution of the two branches of the evaporator and the battery cooler is realized by the flow distribution module. Specifically, it can be determined according to the outlets of the evaporator and battery cooler components: if the outlet pressure of the evaporator is high, the value increases, and the flow distribution of this evaporator branch is more; if the outlet pressure of the battery cooler is high, (1 - ) value is large, then the flow distribution of this battery cooler branch is more, and finally the flow balance of the calculation result is achieved. Among them, the calculation formula can but is not limited to be expressed as follows:

[0124] Among them, respectively represent the flow rates allocated to the evaporator and the battery cooler, represents the flow distribution coefficient, Represents the total flow rate.

[0125] For example, the present invention can use the finite volume division method within the component to couple and solve the multi-physical fields of multiple thermodynamic components through a thermal management model, thereby obtaining the flow rate distribution (index) of the evaporator and the battery cooler, and using the outlet pressure of the evaporator and the battery cooler to distribute the flow rate to achieve mass conservation.

[0126] That is, the internal space of the component is divided into a series of non-overlapping finite volumes (or control volumes). Among them, each finite volume is a small space unit, and the flow rate distribution within each finite volume is solved through the thermal management model, thereby realizing the flow rate distribution of the entire component.

[0127] The embodiments of the present invention can integrate a thermal management model through multiple established thermodynamic component models. Each thermodynamic model has a very high degree of openness and can be coupled with various actual road scenarios of the target vehicle. The integrated thermal management model can flexibly realize the intelligent energy management control of the target vehicle and can also be applied to the simulation of new energy vehicle air conditioners and heat pump air conditioner systems, effectively improving the applicable scenarios and practicality of the present invention.

[0128] The following uses a specific embodiment to explain the present invention in detail.

[0129] Figure 6 Is a flowchart of the multi-physical field thermodynamic component collaborative integration method for a new energy vehicle according to an embodiment of the present invention. As Figure 6 shown, the embodiments of the present invention can respectively build a compressor model, a condenser model, an evaporator model, an expansion valve model, and a battery cooler model, and couple and integrate these thermodynamic component models to build a thermal management model for actual application.

[0130] Among them, the modeling of each thermodynamic component model fully considers the calculation of the electric field, thermal field, and flow field, and obtains key solution indexes such as the necessary fluid mass flow rate, temperature, and electric power.

[0131] It should be noted that in the actual application scenario, the construction sequence of the compressor model, condenser model, evaporator model, expansion valve model, and battery cooler model can be determined by those skilled in the art according to the actual situation. The embodiments of the present invention are only for illustrative purposes and are not specifically limited.

[0132] Figure 7 Is a schematic diagram of the wall temperature balance calculation of the key thermodynamic components according to an embodiment of the present invention. As Figure 7 shown, in the condenser, evaporator, and battery cooler, heat transfer through the wall surface is involved on both sides of the fluid. On one side of the condenser and evaporator is air and on the other side is refrigerant. On one side of the battery cooler is coolant and on the other side is refrigerant. Q ref$Q$ is the heat transfer amount between the refrigerant and the wall surface air / liq $Q_1$ is the heat transfer amount between the air / coolant and the wall surface. The overall method of wall temperature conservation is described here, without specifying a particular component. Heat always transfers from high temperature to low temperature. For a fluid, gaining heat is positive and losing heat is negative. When the heat transfer amounts on both sides are not in equilibrium, it will be continuously adjusted dynamically until the heat transfer amounts on both sides are balanced.

[0133] And Figure 8 is a schematic diagram for calculating the refrigerant-side area of the key thermodynamic component in an embodiment of the present invention. As Figure 8 shown:[[]]END]] First of all, for the condenser, it may involve a superheat zone, a two-phase zone, and a subcooling zone, or it may only involve a two-phase zone and a subcooling zone. First, it is necessary to determine whether the refrigerant is in the superheat zone or the two-phase zone based on the condenser inlet pressure and inlet enthalpy value. When the refrigerant inlet state is in the superheat zone, it is necessary to calculate the superheat zone, the two-phase zone, and the subcooling zone in sequence. The key point of the calculation is the calculation of the heat transfer area in the three zones. To improve the model calculation speed and calculation accuracy at the same time, the embodiment of the present invention can, but is not limited to, simplify it to a one-dimensional tube.

[0134] Next, the embodiment of the present invention judges the difference between the heat transfer amount in the superheat zone and the theoretical heat transfer amount. If the heat transfer amount in the superheat zone is greater than the theoretical heat transfer amount, the heat transfer area needs to be reduced; if the heat transfer amount in the superheat zone is less than the theoretical heat transfer amount, the heat transfer area needs to be increased until the two are equal.

[0135] And, the present invention can also judge the difference between the heat transfer amount in the two-phase zone and the theoretical heat transfer amount between the saturated vapor phase and the saturated liquid phase. Note that to ensure the calculation accuracy of the two-phase zone, the overall area is divided into 10 segments, and the partition where it is located is judged by the dryness. The heat transfer amount in each partition is calculated in sequence, and the final total heat transfer amount in the two-phase zone is obtained by adding them up.

[0136] When the total heat transfer amount in the two-phase zone is greater than the difference between the theoretical heat transfer amount between the saturated vapor phase and the saturated liquid phase, the heat transfer area in the two-phase zone is reduced; when the total heat transfer amount in the two-phase zone is less than the difference between the theoretical heat transfer amount between the saturated vapor phase and the saturated liquid phase, the heat transfer area in the two-phase zone is increased until the two are equal. Secondly, the total area is subtracted from the heat transfer areas in the superheat zone and the two-phase zone to obtain the area of the subcooling zone.

[0137] It should be noted that when the condenser inlet state is in the two-phase zone, the calculation of the superheat zone can be skipped and directly enter the calculation of the two-phase zone and the subcooling zone. The calculation method of the refrigerant side of the evaporator and the battery cooler is the same as that of the condenser.

[0138] The method for collaborative integration of automotive multi-physics field thermodynamic components according to an embodiment of the present invention can establish models corresponding to multiple thermodynamic components based on the multi-physics field coupling characteristics of the target vehicle, and integrate them into a thermal management model to calculate the flow distribution indexes of multiple thermodynamic components of the target vehicle under multi-physics fields, so as to control the collaborative operation of multiple thermodynamic components according to these indexes. Thus, by understanding the changes in factors such as temperature distribution, heat flow transfer, and cooling efficiency of thermodynamic components under different conditions, the performance of multiple thermodynamic components under various working conditions can be accurately simulated and multiple thermal management models can be established, and then integrated into a thermal management model, effectively improving the thermal management performance of the present invention in the face of different actual driving conditions of the target vehicle, realizing precise thermal management of multiple thermodynamic components, greatly improving the energy utilization efficiency of the target vehicle, helping to improve the endurance of the target vehicle, and thus improving the overall performance of the target vehicle; and by using the model simulation characteristics of multiple thermodynamic components in the present invention, various solutions of the thermal management system can be compared and evaluated in the design stage, so as to find the optimal solution, which can greatly reduce the cost and time of actual testing in the later stage and improve the development efficiency. Thus, the problems in the related art are solved, that is, the thermal management system of new energy vehicles ignores the different performance requirements of different working conditions in actual driving, and the focus of thermal management is also different under the influence of different factors, making it difficult to accurately manage the thermal management of new energy vehicles under different working conditions, and the energy utilization efficiency also needs to be improved, etc.

[0139] Next, a device for collaborative integration of automotive multi-physics field thermodynamic components according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0140] Figure 9 It is a schematic structural diagram of a device for collaborative integration of automotive multi-physics field thermodynamic components according to an embodiment of the present invention.

[0141] As Figure 9 shown, the device 10 for collaborative integration of automotive multi-physics field thermodynamic components includes: an acquisition module 100, a construction module 200, and a management module 300.

[0142] Among them, the acquisition module 100 is used to obtain the multi-physics field coupling characteristics of the target vehicle based on the electromagnetic field, thermal field, and fluid flow field of the target vehicle.

[0143] The construction module 200 is used to establish dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle based on the multi-physics field coupling characteristics.

[0144] The management module 300 is used to construct a thermal management model through the dynamic characteristic models, so as to use the thermal management model to couple and solve the thermal management model of the flow distribution indexes of multiple thermodynamic components, and control the collaborative operation of multiple thermodynamic components through predefined energy interaction interfaces and flow distribution indexes between components.

[0145] Optionally, in an embodiment of the present invention, the establishing module 200 includes: a query unit, a determination unit, and a first establishing unit.

[0146] Wherein, the query unit is configured to obtain the physical property parameters of the fluid in the compressor of the target vehicle based on the characteristics of multi-physical field coupling, and query the inlet entropy value of the compressor according to the physical property parameters.

[0147] The determination unit is configured to determine the isentropic compression enthalpy value of the fluid in the compressor according to the inlet entropy value and the outlet pressure of the compressor.

[0148] The first establishing unit is configured to establish a compressor model of the target vehicle by combining the fluid mass flow rate in the compressor, the isentropic compression enthalpy value, the isentropic efficiency, and the mechanical efficiency of the compressor.

[0149] Optionally, in an embodiment of the present invention, the establishing module 200 includes: a first calculation unit, a first partitioning unit, a first solving unit, and a second establishing unit.

[0150] Wherein, the first calculation unit is configured to calculate the heat transfer area of the superheat zone of the condenser, the heat transfer area of the two-phase zone of the condenser, and the heat transfer area of the subcooling zone of the condenser based on the characteristics of multi-physical field coupling and the equivalent one-dimensional circular tube of the condenser of the target vehicle.

[0151] The first partitioning unit is configured to divide the two-phase zone in the condenser into a first target number of partitions according to the heat transfer area of the two-phase zone of the condenser, so as to calculate the heat transfer amount of the two-phase zone of the condenser according to the dryness of the partitions.

[0152] The first solving unit is configured to solve the refrigerant-side heat transfer amount of the condenser based on the heat transfer amount of the two-phase zone of the condenser when the heat transfer area of the superheat zone of the condenser, the heat transfer area of the two-phase zone of the condenser, and the heat transfer area of the subcooling zone of the condenser respectively meet the corresponding area requirements.

[0153] The second establishing unit is configured to establish a condenser model of the target vehicle by combining the wall temperature during the heat transfer process of the condenser, the air-side heat transfer amount, and the refrigerant-side heat transfer amount of the condenser.

[0154] Optionally, in an embodiment of the present invention, the establishing module 200 includes: a second calculation unit, a second solving unit, and a third establishing unit.

[0155] Wherein, the second calculation unit is configured to calculate the heat transfer area of the superheat zone of the evaporator and the heat transfer area of the two-phase zone of the evaporator based on the characteristics of multi-physical field coupling and the equivalent one-dimensional circular tube of the evaporator of the target vehicle.

[0156] A second partitioning unit, configured to partition the evaporated two-phase region into a second target number of partitions according to the heat transfer area of the two-phase region of the evaporator, so as to calculate the heat transfer amount of the two-phase region of the evaporator.

[0157] A second solving unit, configured to solve the refrigerant-side heat transfer amount of the evaporator based on the heat transfer amount of the two-phase region of the evaporator when the heat transfer area of the superheat region of the evaporator and the heat transfer area of the two-phase region of the evaporator respectively meet the corresponding area requirements.

[0158] A third establishing unit, configured to establish an evaporator model of the target vehicle by combining the wall temperature, the air-side heat transfer amount, and the refrigerant-side heat transfer amount of the evaporator during the heat transfer process.

[0159] Optionally, in an embodiment of the present invention, the establishing module 200 includes: a third calculating unit and a fourth establishing unit.

[0160] Wherein, the third calculating unit is configured to calculate the outlet temperature, pressure, and pressure drop of the expansion valve of the target vehicle based on the characteristics of multi-physical field coupling.

[0161] The fourth establishing unit is configured to calculate the flow rate of the expansion valve according to the outlet temperature, pressure, and pressure drop, and establish an expansion valve model of the target vehicle.

[0162] Optionally, in an embodiment of the present invention, the establishing module 200 includes: a fourth calculating unit, a third solving unit, and a fifth establishing unit.

[0163] Wherein, the third calculating unit is configured to calculate the heat transfer area of the superheat region and the heat transfer area of the two-phase region of the battery cooling device based on the characteristics of multi-physical field coupling and the equivalent one-dimensional circular tube of the battery cooling device of the target vehicle; according to the heat transfer area of the two-phase region of the battery cooling device.

[0164] A third partitioning unit, configured to partition the two-phase region of the battery cooling device into a third target number of partitions according to the heat transfer area of the two-phase region of the battery cooling device, so as to calculate the heat transfer amount of the two-phase region of the battery cooling device.

[0165] The third solving unit is configured to solve the refrigerant-side heat transfer amount of the battery cooling device based on the heat transfer amount of the two-phase region of the battery cooling device when the heat transfer area of the superheat region of the battery cooling device and the heat transfer area of the two-phase region of the battery cooling device respectively meet the corresponding area requirements.

[0166] The fifth establishing unit is configured to establish a battery cooling device model of the target vehicle by combining the wall temperature, the coolant-side heat transfer amount, and the refrigerant-side heat transfer amount of the battery cooling device during the heat transfer process.

[0167] It should be noted that the foregoing explanation of the embodiments of the collaborative integration method for automotive multi - physical - field thermodynamic components is also applicable to the automotive multi - physical - field thermodynamic component collaborative integration device of this embodiment, and will not be elaborated here.

[0168] According to the automotive multi - physical - field thermodynamic component collaborative integration device proposed by the embodiments of the present invention, models corresponding to multiple thermodynamic components can be established based on the multi - physical - field coupling characteristics of the target vehicle and integrated into a thermal management model to calculate the flow distribution indexes of multiple thermodynamic components of the target vehicle under multi - physical - fields, and multiple thermodynamic components can be controlled to operate collaboratively according to these indexes. Thus, by understanding the changes in factors such as temperature distribution, heat flow transfer, and cooling efficiency of thermodynamic components under different conditions, the performance of multiple thermodynamic components under various working conditions can be accurately simulated and multiple thermal management models can be established, and then integrated into a thermal management model, effectively improving the thermal management performance of the present invention in the face of different actual driving conditions of the target vehicle, achieving precise thermal management of multiple thermodynamic components, greatly improving the energy utilization efficiency of the target vehicle, helping to improve the endurance ability of the target vehicle, and thus improving the overall performance of the target vehicle; and using the model simulation characteristics of multiple thermodynamic components in the present invention, various solutions of the thermal management system can be compared and evaluated during the design stage, so as to find the optimal solution, which can significantly reduce the cost and time of actual testing in the later stage and improve the development efficiency. Thus, the problems in the related art are solved, that is, the thermal management system of new energy vehicles ignores the different performance requirements of different working conditions in actual driving, and the focus of thermal management is also different under the influence of different factors, making it difficult to perform precise thermal management on new energy vehicles under different working conditions, and the energy utilization efficiency also needs to be improved.

[0169] Figure 10 The following is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. The electronic device may include: A memory 1001, a processor 1002, and a computer program stored on the memory 1001 and executable on the processor 1002.

[0170] When the processor 1002 executes the program, it implements the automotive multi - physical - field thermodynamic component collaborative integration method provided in the above - mentioned embodiment.

[0171] Furthermore, the electronic device further includes: A communication interface 1003 for communication between the memory 1001 and the processor 1002.

[0172] The memory 1001 is used to store a computer program executable on the processor 1002.

[0173] The memory 1001 may include high-speed RAM memory and may also include non-volatile memory, such as at least one disk memory.

[0174] If the memory 1001, the processor 1002, and the communication interface 1003 are implemented independently, the communication interface 1003, the memory 1001, and the processor 1002 can be interconnected through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 10 only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0175] Optionally, in a specific implementation, if the memory 1001, the processor 1002, and the communication interface 1003 are integrated on a single chip, the memory 1001, the processor 1002, and the communication interface 1003 can communicate with each other through an internal interface.

[0176] The processor 1002 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0177] The embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned collaborative integration method of automotive multi-physical field thermodynamic components is implemented.

[0178] The embodiments of the present invention also provide a computer program product, including a computer program, and the computer program can run computer instructions, and when the computer instructions are executed by a processor, the collaborative integration method of automotive multi-physical field thermodynamic components provided by the embodiments of the present invention is implemented.

[0179] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0180] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0181] Any process or method description shown in a flowchart or described in other ways herein may be understood to represent a module, segment, or portion of code including one or N executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of the present invention includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in a reverse order according to the functions involved, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0182] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definable sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in conjunction with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection portion (electronic device) having one or N wirings, a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then stored in a computer memory.

[0183] It should be understood that various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above-described embodiments, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), and the like.

[0184] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0185] In addition, each functional unit in various embodiments of the present invention may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0186] The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disc, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for collaborative integration of automotive multi-physics field thermodynamic components, characterized in that: The following steps are involved: Based on the electromagnetic field, thermal field and fluid flow field of the target vehicle, obtaining multi-physics field coupling characteristics of the target vehicle; Based on the multi-physical field coupling characteristics, establishing dynamic characteristic models corresponding to multiple thermodynamic components of the target vehicle; A thermal management model is constructed through the dynamic characteristic model, so as to utilize the thermal management model to couple and solve the thermal management model of the flow distribution index of the multiple thermodynamic components, and the coordinated operation of the multiple thermodynamic components is controlled through the predefined energy interaction interface between components and the flow distribution index.

2. The method for collaborative integration of automotive multi-physics field thermodynamic components according to claim 1, characterized in that: The step of establishing a dynamic characteristic model corresponding to a plurality of thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: Based on the multi-physical field coupling characteristics, the physical property parameters of the fluid in the compressor of the target vehicle are obtained, and the inlet entropy value of the compressor is queried according to the physical property parameters; determining an isentropic compression enthalpy value of the fluid in the compressor according to the inlet entropy value and the outlet pressure of the compressor; The compressor model of the target vehicle is established by combining the fluid mass flow rate in the compressor, the isentropic compression enthalpy value, and the isentropic efficiency and mechanical efficiency of the compressor.

3. The method for collaborative integration of automotive multi-physics field thermodynamic components according to claim 1, characterized in that: The step of establishing a dynamic characteristic model corresponding to a plurality of thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: Based on the multi-physics field coupling characteristics and the equivalent one-dimensional circular tube of the condenser of the target vehicle, the heat exchange area of ​​the superheated zone of the condenser, the heat exchange area of ​​the two-phase zone of the condenser and the heat exchange area of ​​the subcooled zone of the condenser are calculated; Dividing the two-phase region in the condenser into a first target number of partitions according to the heat exchange area of ​​the two-phase region of the condenser, so as to calculate the two-phase region heat exchange amount of the condenser according to the dryness of the partitions; Under the condition that the heat exchange area of ​​the superheating zone of the condenser, the heat exchange area of ​​the two-phase zone of the condenser and the heat exchange area of ​​the subcooling zone of the condenser respectively meet the corresponding area requirements, the heat exchange amount of the refrigerant side of the condenser is solved based on the heat exchange amount of the two-phase zone of the condenser; The condenser model of the target vehicle is established by combining the wall temperature of the condenser during the heat exchange process, the air-side heat exchange amount, and the refrigerant-side heat exchange amount of the condenser.

4. The method for collaborative integration of automotive multi-physics field thermodynamic components according to claim 1, characterized in that: The step of establishing a dynamic characteristic model corresponding to a plurality of thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: Based on the multi-physics field coupling characteristics and the equivalent one-dimensional circular tube of the evaporator of the target vehicle, the heat exchange area of ​​the superheating zone of the evaporator and the heat exchange area of ​​the two-phase zone of the evaporator are calculated; Dividing the two-phase region of the evaporator into a second target number of partitions according to the heat exchange area of ​​the two-phase region of the evaporator to calculate the heat exchange capacity of the two-phase region of the evaporator; Under the condition that the heat exchange area of ​​the superheating zone of the evaporator and the heat exchange area of ​​the two-phase zone of the evaporator meet the corresponding area requirements respectively, the heat exchange amount of the refrigerant side of the evaporator is solved based on the heat exchange amount of the two-phase zone of the evaporator; The evaporator model of the target vehicle is established by combining the wall temperature of the evaporator during the heat exchange process, the air-side heat exchange amount, and the refrigerant-side heat exchange amount of the evaporator.

5. The method for collaborative integration of automotive multi-physics field thermodynamic components according to claim 1, characterized in that: The step of establishing a dynamic characteristic model corresponding to a plurality of thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: Based on the multi-physics field coupling characteristics, calculating the outlet temperature, pressure, and pressure drop of the expansion valve of the target vehicle; The flow rate of the expansion valve is calculated according to the outlet temperature, pressure, and pressure drop, and an expansion valve model of the target vehicle is established.

6. The method for collaborative integration of automotive multi-physics field thermodynamic components according to claim 1, characterized in that: The step of establishing a dynamic characteristic model corresponding to a plurality of thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics includes: Based on the multi-physics field coupling characteristics and the equivalent one-dimensional circular tube of the battery cooling device of the target vehicle, calculating the heat exchange area of ​​the overheating zone of the battery cooling device and the heat exchange area of ​​the two-phase zone of the battery cooling device; Dividing the two-phase region of the battery cooling device into a third target number of partitions according to the heat exchange area of ​​the two-phase region of the battery cooling device to calculate the heat exchange amount of the two-phase region of the battery cooling device; When the heat exchange area of ​​the overheating zone of the battery cooling device and the heat exchange area of ​​the two-phase zone of the battery cooling device meet the corresponding area requirements respectively, solving the refrigerant side heat exchange amount of the battery cooling device based on the two-phase zone heat exchange amount of the battery cooling device; The battery cooling device model of the target vehicle is established by combining the wall temperature of the battery cooling device during the heat exchange process, the heat exchange amount on the coolant side, and the heat exchange amount on the refrigerant side of the battery cooling device.

7. A collaborative integration device for automotive multi-physics field thermodynamic components, characterized in that: include: An acquisition module, used for acquiring multi-physical field coupling characteristics of the target vehicle based on the electromagnetic field, thermal field and fluid flow field of the target vehicle; An establishment module is used to establish a dynamic characteristic model corresponding to multiple thermodynamic components of the target vehicle based on the multi-physical field coupling characteristics; A management module is used to build a thermal management model through the dynamic characteristic model, so as to utilize the thermal management model to couple and solve the thermal management model of the flow distribution index of the multiple thermodynamic components, and control the coordinated operation of the multiple thermodynamic components through the predefined energy interaction interface between components and the flow distribution index.

8. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for collaborative integration of automotive multi-physics field thermodynamic components as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program is executed by a processor to implement the method for collaborative integration of automotive multi-physics field thermodynamic components as described in any one of claims 1-6.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed, it is used to implement the method for collaborative integration of automotive multi-physics field thermodynamic components as described in any one of claims 1-6.

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