Motor thermal simulation analysis method and device, storage medium and computer equipment

Abstract

The embodiment of the invention provides a motor thermal simulation analysis method and device, a storage medium and computer equipment. The method comprises the steps of inputting obtained parameters of all parts of a motor into one-dimensional thermal network software, and outputting a one-dimensional thermal model and flow field heat exchange data; calculating the cooling water jacket in the motor based on a finite element analysis algorithm to generate cooling water jacket space distribution flow field data; averaging the spatial distribution flow field data of the cooling water jacket to generate spatial average flow field data of the cooling water jacket; inputting the space average flow field data of the cooling water jacket into a one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model; and performing thermal simulation analysis on the motor according to the new flow field heat exchange data. In the technical scheme provided by the embodiment of the invention, only the cooling water jacket in the motor needs to be calculated based on a finite element analysis algorithm instead of finite element calculation on the whole motor, so that the modeling speed, the calculation precision and the efficiency of thermal simulation analysis of the motor are improved.

Description

[Technical field]

[0001] The present invention relates to the field of computer technology, and in particular to a motor thermal simulation analysis method, device, storage medium and computer equipment. [Background technology]

[0002] With the development of the new energy vehicle industry, the motor is one of the most important power components of new energy vehicles. The motor realizes the conversion of electrical energy and mechanical energy through electromagnetic media. While outputting power, it will generate a lot of heat, which needs to be taken away by the cooling medium in the cooling water jacket inside the motor. Otherwise, the heat will cause the motor components to heat up rapidly, and the local high temperature will cause the motor winding insulation layer to fail, the silicon steel sheet performance and the permanent magnet material performance to decay or even demagnetize and fail. Therefore, it is necessary to perform thermal simulation analysis on each component of the motor during the design stage of the motor, and it is particularly important to control the temperature distribution inside the motor. However, in the related technologies, the motor thermal simulation analysis method includes a three-dimensional finite element thermal analysis method or a one-dimensional thermal network analysis method, but the modeling speed, calculation accuracy and efficiency of the above two motor thermal simulation analysis methods are relatively low. [Summary of the invention]

[0003] In view of this, an embodiment of the present invention provides a motor thermal simulation analysis method, apparatus, storage medium and computer equipment to improve the modeling speed, calculation accuracy and efficiency of motor thermal simulation analysis.

[0004] In one aspect, an embodiment of the present invention provides a motor thermal simulation analysis method, comprising:

[0005] Input the acquired parameters of each component of the motor into the one-dimensional thermal network software, and output the one-dimensional thermal model and flow field heat transfer data;

[0006] The cooling water jacket in the motor is calculated based on the finite element analysis algorithm to generate the spatial distribution flow field data of the cooling water jacket;

[0007] Performing average calculation on the spatially distributed flow field data of the cooling water jacket to generate spatially averaged flow field data of the cooling water jacket;

[0008] Inputting the spatial average flow field data of the cooling water jacket into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model;

[0009] Perform thermal simulation analysis on the motor based on the new flow field heat transfer data.

[0010] Optionally, the component parameters include component parameter data and loss distribution data corresponding to each component, and the acquired component parameters of the motor are input into a one-dimensional thermal network software to output a one-dimensional thermal model and flow field heat transfer data, including:

[0011] Inputting the acquired component parameter data corresponding to each component into the one-dimensional thermal network software;

[0012] Based on the one-dimensional thermal network model, the loss distribution data corresponding to each component under each working condition of the motor is input into each component, and the motor is discretized into the one-dimensional thermal model and the flow field heat exchange data is generated.

[0013] Optionally, the components include a motor stator, a motor rotor, a motor winding, a motor magnet, a cooling water jacket or a motor housing, and the component parameter data include one or any combination of geometric dimension data of the motor stator, the motor rotor, the motor winding, the motor magnet, the cooling water jacket or the motor housing and one or any combination of material parameter data of the motor stator, the motor rotor, the motor winding, the motor magnet, the cooling water jacket or the motor housing.

[0014] Optionally, the calculation of the cooling water jacket in the motor based on a finite element analysis algorithm to generate spatial distribution flow field data of the cooling water jacket includes:

[0015] The cooling water jacket is meshed based on a three-dimensional finite element fluid analysis algorithm, and flow field calculations are performed on the fluid temperature and heat transfer coefficient in the cooling water jacket to generate spatially distributed flow field data of the cooling water jacket.

[0016] Optionally, the averaging of the spatially distributed flow field data of the cooling water jacket to generate the spatially averaged flow field data of the cooling water jacket includes:

[0017] An area average calculation is performed on the spatially distributed flow field data of the cooling water jacket to generate spatially averaged flow field data of the cooling water jacket.

[0018] Optionally, performing thermal simulation analysis on the motor according to the new flow field heat exchange data includes:

[0019] Compare the temperature of each component in the temperature field data with the insulation withstand temperature of the material of each component;

[0020] If the temperature of each component in the temperature field data is lower than the material insulation tolerance temperature of each component, the thermal simulation analysis of the motor is completed.

[0021] Optionally, it also includes:

[0022] If the temperature of each component in the temperature field data is greater than or equal to the material insulation tolerance temperature of each component, the parameters of each component of the motor are modified, and the steps of inputting the obtained parameters of each component of the motor into the one-dimensional thermal network software and outputting the one-dimensional thermal model and flow field heat exchange data are continued.

[0023] On the other hand, an embodiment of the present invention provides a motor thermal simulation analysis device, comprising:

[0024] The first calculation module is used to input the acquired parameters of each component of the motor into the one-dimensional thermal network software, and output the one-dimensional thermal model and flow field heat exchange data;

[0025] The second calculation module is used to calculate the cooling water jacket in the motor based on the finite element analysis algorithm to generate the spatial distribution flow field data of the cooling water jacket;

[0026] A third calculation module is used to perform average calculation on the spatial distribution flow field data of the cooling water jacket to generate spatial average flow field data of the cooling water jacket;

[0027] a fourth calculation module, configured to input the spatial average flow field data of the cooling water jacket into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model;

[0028] The thermal simulation analysis module is used to perform thermal simulation analysis on the motor based on the new flow field heat exchange data.

[0029] On the other hand, an embodiment of the present invention provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the above-mentioned motor thermal simulation analysis method.

[0030] On the other hand, an embodiment of the present invention provides a computer device, including a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, wherein the program instructions, when loaded and executed by the processor, implement the steps of the above-mentioned motor thermal simulation analysis method.

[0031] In the technical solution of the motor thermal simulation analysis method provided by the embodiment of the present invention, the acquired parameters of each component of the motor are input into the one-dimensional thermal network software, and the one-dimensional thermal model and flow field heat exchange data are output; the cooling water jacket in the motor is calculated based on the finite element analysis algorithm to generate the cooling water jacket spatial distribution flow field data; the cooling water jacket spatial distribution flow field data is averaged to generate the cooling water jacket spatial average flow field data; the cooling water jacket spatial average flow field data is input into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model; and the motor is thermally simulated and analyzed based on the new flow field heat exchange data. In the technical solution provided by the embodiment of the present invention, it is only necessary to calculate the cooling water jacket in the motor based on the finite element analysis algorithm to replace the finite element calculation of the entire motor, thereby improving the modeling speed, calculation accuracy and efficiency of the motor thermal simulation analysis.

Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A flow chart of a motor thermal simulation analysis method provided by one embodiment of the present invention;

[0034] Figure 2 A schematic diagram of a three-dimensional finite element model of a cooling water jacket provided in one embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the temperature of each component in the temperature field data provided by an embodiment of the present invention;

[0036] Figure 4 A schematic diagram of the structure of a motor thermal simulation analysis device provided by one embodiment of the present invention;

[0037] Figure 5 A schematic diagram of a computer device provided by an embodiment of the present invention. [Specific implementation method]

[0038] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0041] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In a related technology, when a one-dimensional thermal network analysis method is used to simplify the thermal model of a motor, the spatial geometric information of the motor, especially the flow field distribution information of the internal cooling water jacket, cannot be reflected in detail, and the thermal calculation accuracy is poor.

[0043] In another related technology, when using the three-dimensional finite element thermal analysis method, it is necessary to geometrically assemble and simplify all the parts inside the motor, such as the stator core, stator winding, rotor core, shaft and other parts. The processing takes a long time, and after processing, it is necessary to mesh them one by one, and establish the geometric motion law for the moving parts. The number of grids is large and the quality of the grid is difficult to guarantee. Under the setting of a large number of grids and complex geometric motion laws, the amount of calculation is huge, the time is very long, and the calculation is difficult to converge, which easily leads to failure in calculating the thermal distribution of the motor. Among them, when performing the meshing of the three-dimensional finite element thermal analysis method, it is necessary to first perform two-dimensional (2D) surface meshing and then generate a three-dimensional (3D) body mesh. When there is a problem with the 3D body mesh, it is necessary to return to perform multiple 2D surface mesh adjustments, which takes a long time. When performing three-dimensional finite element modeling of the three-dimensional finite element thermal analysis method, it is necessary to create interfaces for all the heat transfer surfaces of the parts. If there is a problem during the geometric assembly processing, the interface creation will fail, and it is necessary to return to the geometric assembly work, which is inefficient.

[0044] In order to solve the technical problems in the related art, the embodiment of the present invention provides a motor thermal simulation analysis method. Figure 1 A flow chart of a motor thermal simulation analysis method provided by an embodiment of the present invention is as follows Figure 1 As shown, the method includes:

[0045] Step 102: input the acquired parameters of each component of the motor into a one-dimensional thermal network software, and output a one-dimensional thermal model and flow field heat transfer data.

[0046] In the embodiment of the present invention, each step is performed by a computer device. For example, the computer device includes a computer, a tablet computer, etc. The computer device may be installed with three-dimensional finite element software and one-dimensional thermal network software.

[0047] In an embodiment of the present invention, each component parameter includes component parameter data and loss distribution data corresponding to each component. Among them, the components include a motor stator, a motor rotor, a motor winding, a motor magnet, a cooling water jacket or a motor housing, and the component parameter data includes one or any combination of geometric dimension data of the motor stator, the motor rotor, the motor winding, the motor magnet, the cooling water jacket or the motor housing and one or any combination of material parameter data of the motor stator, the motor rotor, the motor winding, the motor magnet, the cooling water jacket or the motor housing. For example, the geometric dimension data may include the diameter, length, width, etc. of the component. The material parameter data may include the density, specific heat capacity, thermal conductivity, etc. of the material of the component. The geometric dimension data and material parameter data of each component can be measured and obtained based on the real components of the motor.

[0048] Specifically, step 102 includes: inputting the acquired component parameter data corresponding to each component into the one-dimensional thermal network software; inputting the loss distribution data corresponding to each component under each working condition of the motor into each component based on the one-dimensional thermal network model, and discretizing the motor into a one-dimensional thermal model and generating flow field heat exchange data.

[0049] For example, the geometric dimension data and material parameter data of the motor stator, motor rotor, motor winding and motor magnet can be input into the one-dimensional thermal network software, the geometric dimension data of the cooling water jacket and the motor housing can be input into the one-dimensional thermal network software, and the loss distribution data corresponding to each component (motor stator, motor rotor, motor winding and motor magnet) under each operating condition of the motor can be input into each component (motor stator, motor rotor, motor winding and motor magnet) based on the one-dimensional thermal network model.

[0050] Step 104: Calculate the cooling water jacket in the motor based on a finite element analysis algorithm to generate spatial distribution flow field data of the cooling water jacket.

[0051] Specifically, the cooling water jacket is meshed based on a three-dimensional finite element fluid analysis algorithm, and the flow field calculation is performed on the fluid temperature and heat transfer coefficient in the cooling water jacket to generate the spatial distribution flow field data of the cooling water jacket.

[0052] As an optional solution, the cooling water jacket can be meshed using three-dimensional finite element software, and the flow field calculation of the fluid temperature and heat transfer coefficient in the cooling water jacket can be performed to generate the spatial distribution flow field data of the cooling water jacket.

[0053] Figure 2 A schematic diagram of a three-dimensional finite element model of a cooling water jacket provided in one embodiment of the present invention can be shown as follows: Figure 2 The cooling water jacket is meshed in the manner shown.

[0054] In the embodiment of the present invention, when the spatial distribution of the spatially distributed flow field data of the cooling water jacket is uniform, step 106 is continued to be executed; when the spatial distribution of the spatially distributed flow field data of the cooling water jacket is uneven, the geometric dimension data of the cooling water jacket needs to be modified or optimized.

[0055] Step 106: average the spatially distributed flow field data of the cooling water jacket to generate spatially averaged flow field data of the cooling water jacket.

[0056] Specifically, the area average calculation is performed on the spatial distribution flow field data of the cooling water jacket to generate the spatial average flow field data of the cooling water jacket.

[0057] As an optional solution, the spatially distributed flow field data of the cooling water jacket may be divided by the inner surface area of ​​the cooling water jacket to generate the spatially averaged flow field data of the cooling water jacket.

[0058] Step 108: Input the spatial average flow field data of the cooling water jacket into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model.

[0059] Step 110: Perform thermal simulation analysis on the motor according to the new flow field heat exchange data.

[0060] Specifically, the temperature of each component in the temperature field data is compared with the material insulation tolerance temperature of each component; if the temperature of each component in the temperature field data is less than the material insulation tolerance temperature of each component, the thermal simulation analysis of the motor is completed; if the temperature of each component in the temperature field data is greater than or equal to the material insulation tolerance temperature of each component, the parameters of each component of the motor are modified, and step 102 is continued.

[0061] In the embodiment of the present invention, the insulation tolerance temperature of the material can be 150-180 degrees Celsius.

[0062] Figure 3 A schematic diagram of the temperature of each component in the temperature field data provided by an embodiment of the present invention, such as Figure 3 As shown in the figure, the temperature of the motor stator, motor rotor, motor winding and motor magnetic steel all increase with the extension of time. Among them, the motor winding tends to stabilize at 150 degrees Celsius after 2080s, the motor stator tends to stabilize at 130 degrees Celsius after 1560s, and the motor rotor and motor magnetic steel tend to stabilize at 130 degrees Celsius after 3120s.

[0063] In the technical solution provided by the embodiment of the present invention, the acquired parameters of each component of the motor are input into the one-dimensional thermal network software, and the one-dimensional thermal model and flow field heat exchange data are output; the cooling water jacket in the motor is calculated based on the finite element analysis algorithm to generate the cooling water jacket spatial distribution flow field data; the cooling water jacket spatial distribution flow field data is averaged to generate the cooling water jacket spatial average flow field data; the cooling water jacket spatial average flow field data is input into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model; and the motor is thermally simulated and analyzed based on the new flow field heat exchange data. In the technical solution provided by the embodiment of the present invention, it is only necessary to calculate the cooling water jacket in the motor based on the finite element analysis algorithm to replace the finite element calculation of the entire motor, thereby improving the modeling speed, calculation accuracy and efficiency of the motor thermal simulation analysis.

[0064] In the technical solution provided by the embodiment of the present invention, the thermal distribution of the motor is simulated based on three-dimensional finite element software and one-dimensional thermal network software. Practice shows that the above method is fast and effective for thermal analysis of the motor.

[0065] In the technical solution provided by the embodiment of the present invention, there is no need to mesh the entire motor including the motor stator, motor rotor, motor winding, motor shaft, motor magnet, air domain, etc., and only the cooling water jacket is meshed, which greatly reduces the modeling time and calculation time, and is more efficient. A three-dimensional cooling water jacket simulation is used to calculate the spatial average flow field data of the cooling water jacket for a one-dimensional thermal model, and the calculation is more accurate. The model is established faster and more conveniently, with a short calculation time, fast response, and short iterative optimization cycle. It is more accurate than the one-dimensional thermal network method in the related technology, and faster and more efficient than the three-dimensional finite element method.

[0066] An embodiment of the present invention provides a motor thermal simulation analysis device. Figure 4 A schematic diagram of a motor thermal simulation analysis device provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, the device includes: a first calculation module 11, a second calculation module 12, a third calculation module 13, a fourth calculation module 14 and a thermal simulation analysis module 15.

[0067] The first calculation module 11 is used to input the acquired parameters of each component of the motor into the one-dimensional thermal network software, and output the one-dimensional thermal model and flow field heat exchange data.

[0068] The second calculation module 12 is used to calculate the cooling water jacket in the motor based on the finite element analysis algorithm to generate spatial distribution flow field data of the cooling water jacket.

[0069] The third calculation module 13 is used to perform average calculation on the spatially distributed flow field data of the cooling water jacket to generate spatially averaged flow field data of the cooling water jacket.

[0070] The fourth calculation module 14 is used to input the average flow field data of the cooling water jacket space into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model.

[0071] The thermal simulation analysis module 15 is used to perform thermal simulation analysis on the motor according to the new flow field heat exchange data.

[0072] In an embodiment of the present invention, each component parameter includes component parameter data and loss distribution data corresponding to each component. The first calculation module 11 is specifically used to input the acquired component parameter data corresponding to each component into the one-dimensional thermal network software; based on the one-dimensional thermal network model, the loss distribution data corresponding to each component under each working condition of the motor is input into each component, and the motor is discretized into a one-dimensional thermal model and flow field heat exchange data is generated.

[0073] In an embodiment of the present invention, the components include a motor stator, a motor rotor, a motor winding, a motor magnet, a cooling water jacket or a motor housing, and the component parameter data include one or any combination of geometric dimension data of the motor stator, the motor rotor, the motor winding, the motor magnet, the cooling water jacket or the motor housing and one or any combination of material parameter data of the motor stator, the motor rotor, the motor winding, the motor magnet, the cooling water jacket or the motor housing.

[0074] In the embodiment of the present invention, the second calculation module 12 is specifically used to grid the cooling water jacket based on a three-dimensional finite element fluid analysis algorithm, and perform flow field calculation on the fluid temperature and heat transfer coefficient in the cooling water jacket to generate spatially distributed flow field data of the cooling water jacket.

[0075] In the embodiment of the present invention, the third calculation module 13 is specifically used to perform area average calculation on the spatially distributed flow field data of the cooling water jacket to generate spatially averaged flow field data of the cooling water jacket.

[0076] In an embodiment of the present invention, the thermal simulation analysis module 15 is specifically used to compare the temperature of each component in the temperature field data with the material insulation tolerance temperature of each component; if the temperature of each component in the temperature field data is lower than the material insulation tolerance temperature of each component, the thermal simulation analysis of the motor is completed.

[0077] In an embodiment of the present invention, the thermal simulation analysis module 15 is also specifically used to modify the parameters of each component of the motor if the temperature of each component in the temperature field data is greater than or equal to the material insulation tolerance temperature of each component, and trigger the first calculation module 11 to continue to execute the steps of inputting the acquired parameters of each component of the motor into the one-dimensional thermal network software, and outputting the one-dimensional thermal model and flow field heat exchange data.

[0078] In the technical solution provided by the embodiment of the present invention, the acquired parameters of each component of the motor are input into the one-dimensional thermal network software, and the one-dimensional thermal model and flow field heat exchange data are output; the cooling water jacket in the motor is calculated based on the finite element analysis algorithm to generate the cooling water jacket spatial distribution flow field data; the cooling water jacket spatial distribution flow field data is averaged to generate the cooling water jacket spatial average flow field data; the cooling water jacket spatial average flow field data is input into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model; and the motor is thermally simulated and analyzed based on the new flow field heat exchange data. In the technical solution provided by the embodiment of the present invention, it is only necessary to calculate the cooling water jacket in the motor based on the finite element analysis algorithm to replace the finite element calculation of the entire motor, thereby improving the modeling speed, calculation accuracy and efficiency of the motor thermal simulation analysis.

[0079] The motor thermal simulation analysis device provided in this embodiment can be used to achieve the above Figure 1 The motor thermal simulation analysis method in the embodiment of the motor thermal simulation analysis method can be specifically described in detail, and will not be repeated here.

[0080] An embodiment of the present invention provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the embodiment of the above-mentioned motor thermal simulation analysis method. For a specific description, please refer to the embodiment of the above-mentioned motor thermal simulation analysis method.

[0081] An embodiment of the present invention provides a computer device, including a memory and a processor, the memory is used to store information including program instructions, the processor is used to control the execution of the program instructions, and when the program instructions are loaded and executed by the processor, the steps of the embodiment of the above-mentioned motor thermal simulation analysis method are implemented. For a specific description, please refer to the embodiment of the above-mentioned motor thermal simulation analysis method.

[0082] Figure 5 A schematic diagram of a computer device provided by an embodiment of the present invention. Figure 5 As shown, the computer device 20 of this embodiment includes: a processor 21, a memory 22, and a computer program 23 stored in the memory 22 and executable on the processor 21. When the computer program 23 is executed by the processor 21, the method for thermal simulation analysis of a motor in the embodiment is implemented. To avoid repetition, it is not described one by one here. Alternatively, when the computer program is executed by the processor 21, the functions of each model / unit in the device for thermal simulation analysis of a motor in the embodiment are implemented. To avoid repetition, it is not described one by one here.

[0083] The computer device 20 includes, but is not limited to, a processor 21 and a memory 22. Those skilled in the art will appreciate that Figure 5It is only an example of the computer device 20 and does not constitute a limitation of the computer device 20. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the computer device may also include input and output devices, network access devices, buses, etc.

[0084] The processor 21 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0085] The memory 22 may be an internal storage unit of the computer device 20, such as a hard disk or memory of the computer device 20. The memory 22 may also be an external storage device of the computer device 20, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the computer device 20. Further, the memory 22 may also include both an internal storage unit of the computer device 20 and an external storage device. The memory 22 is used to store computer programs and other programs and data required by the computer device. The memory 22 may also be used to temporarily store data that has been output or is to be output.

[0086] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0087] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0088] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0089] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0090] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (Processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor thermal simulation analysis method, characterized in that: include: Input the acquired parameters of each component of the motor into the one-dimensional thermal network software, and output the one-dimensional thermal model and flow field heat transfer data; The cooling water jacket in the motor is calculated based on the finite element analysis algorithm to generate the spatial distribution flow field data of the cooling water jacket; Performing average calculation on the spatially distributed flow field data of the cooling water jacket to generate spatially averaged flow field data of the cooling water jacket; Inputting the spatial average flow field data of the cooling water jacket into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model; Perform thermal simulation analysis on the motor based on the new flow field heat transfer data.

2. The method according to claim 1, characterized in that The component parameters include component parameter data and loss distribution data corresponding to each component. The acquired component parameters of the motor are input into a one-dimensional thermal network software to output a one-dimensional thermal model and flow field heat transfer data, including: Inputting the acquired component parameter data corresponding to each component into the one-dimensional thermal network software; Based on the one-dimensional thermal network model, the loss distribution data corresponding to each component under each working condition of the motor is input into each component, and the motor is discretized into the one-dimensional thermal model and the flow field heat exchange data is generated.

3. The method according to claim 2, characterized in that The components include a motor stator, a motor rotor, a motor winding, a motor magnetic steel, a cooling water jacket or a motor housing, and the component parameter data include one or any combination of geometric dimension data of the motor stator, the motor rotor, the motor winding, the motor magnetic steel, the cooling water jacket or the motor housing and one or any combination of material parameter data of the motor stator, the motor rotor, the motor winding, the motor magnetic steel, the cooling water jacket or the motor housing.

4. The method according to claim 1, characterized in that: The method of calculating the cooling water jacket in the motor based on the finite element analysis algorithm to generate the spatial distribution flow field data of the cooling water jacket includes: The cooling water jacket is meshed based on a three-dimensional finite element fluid analysis algorithm, and flow field calculations are performed on the fluid temperature and heat transfer coefficient in the cooling water jacket to generate spatially distributed flow field data of the cooling water jacket.

5. The method according to claim 1, characterized in that The averaging calculation of the spatially distributed flow field data of the cooling water jacket to generate the spatially averaged flow field data of the cooling water jacket includes: An area average calculation is performed on the spatially distributed flow field data of the cooling water jacket to generate spatially averaged flow field data of the cooling water jacket.

6. The method according to claim 1, characterized in that The thermal simulation analysis of the motor according to the new flow field heat exchange data includes: Compare the temperature of each component in the temperature field data with the insulation withstand temperature of the material of each component; If the temperature of each component in the temperature field data is lower than the material insulation tolerance temperature of each component, the thermal simulation analysis of the motor is completed.

7. The method according to claim 6, characterized in that Also includes: If the temperature of each component in the temperature field data is greater than or equal to the material insulation tolerance temperature of each component, the parameters of each component of the motor are modified, and the steps of inputting the obtained parameters of each component of the motor into the one-dimensional thermal network software and outputting the one-dimensional thermal model and flow field heat exchange data are continued.

8. A motor thermal simulation analysis device, characterized in that: include: The first calculation module is used to input the acquired parameters of each component of the motor into the one-dimensional thermal network software, and output the one-dimensional thermal model and flow field heat exchange data; The second calculation module is used to calculate the cooling water jacket in the motor based on the finite element analysis algorithm to generate the spatial distribution flow field data of the cooling water jacket; A third calculation module is used to perform average calculation on the spatial distribution flow field data of the cooling water jacket to generate spatial average flow field data of the cooling water jacket; a fourth calculation module, configured to input the spatial average flow field data of the cooling water jacket into the one-dimensional thermal model to replace the flow field heat exchange data in the one-dimensional thermal model; The thermal simulation analysis module is used to perform thermal simulation analysis on the motor based on the new flow field heat exchange data.

9. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the motor thermal simulation analysis method according to any one of claims 1 to 7.

10. A computer device comprising a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, characterized in that: When the program instructions are loaded and executed by the processor, the steps of the motor thermal simulation analysis method described in any one of claims 1 to 7 are implemented.

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