Single-cone surface structure design method and system for high-power connector plug and socket contacts

Abstract

The present invention discloses a method and system for designing a single-cone surface structure of a high-power connector plug and socket contact. A two-dimensional axisymmetric simulation model is established according to the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact. Material properties are assigned to the two-dimensional axisymmetric simulation model in sequence, boundary conditions are set, and meshing is performed. The interface pressure and electric field strength of the two-dimensional axisymmetric simulation model at the single-cone surface structure of the plug and socket contact are simulated and calculated. It is judged whether the interface pressure, electric field strength, and volume of the single-cone surface structure of the high-power connector plug and socket contact meet the requirements. If so, the structural parameters corresponding to the two-dimensional axisymmetric simulation model are used as the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact. Otherwise, the structural parameters of the two-dimensional axisymmetric simulation model are changed, and the material properties, boundary conditions, and meshing are re-assigned.

Description

Technical Field

[0001] The present invention relates to the field of high-power electrical connectors, and in particular to a method and system for designing a single-cone surface structure of a high-power connector plug and socket contact based on COMSOL software. Background Art

[0002] High-power electrical connectors are used for electrical connections between power-related devices, transmitting high voltages and high currents. They are widely used in real-world applications, such as in the engines of new energy vehicles, the internal systems of high-speed trains, and aircraft communication systems. In these applications, damage to these high-power connectors can cause the entire equipment to cease operation, resulting in immeasurable economic losses. Therefore, the stability and quality of high-power connectors during operation and use will affect the reliability and safety of the entire electrical equipment system. Furthermore, with the rapid development of industry, the performance requirements for electrical connectors are becoming increasingly stringent, moving beyond the simple requirements of low voltage and low current. This has led to increasing connector power requirements and higher performance requirements.

[0003] Contacts of high power connectors such as Figure 1 As shown, during operation, high voltage and stress are applied to the connector, making it a weak point and prone to failure. Therefore, it is crucial to know the interface pressure and electric field strength at the contact of high-power connectors in advance. Using experimental methods would waste a lot of manpower, material, and financial resources and be inefficient.

[0004] Therefore, a new technical means needs to be proposed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a single-cone surface structure design method and system for high-power connector plug and socket contacts to solve the problems existing in the prior art. The present invention will not be affected by test conditions, greatly improves efficiency, and effectively saves manpower, material and financial resources.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for designing a single-cone surface structure of a high-power connector plug and socket contact comprises the following steps:

[0008] Step 1: Establish a two-dimensional axisymmetric simulation model based on the structural parameters of the single-cone structure of the high-power connector plug and socket contact;

[0009] Step 2: Assign material properties to the two-dimensional axisymmetric simulation model obtained in step 1;

[0010] Step 3: Set boundary conditions for the two-dimensional axisymmetric simulation model obtained in step 2;

[0011] Step 4: Mesh the two-dimensional axisymmetric simulation model obtained in step 3;

[0012] Step 5: Simulate and calculate the interface pressure and electric field strength of the two-dimensional axisymmetric simulation model obtained in step 4 at the single-cone surface structure of the plug and socket contact, and determine whether the interface pressure, electric field strength and volume of the single-cone surface structure of the high-power connector plug and socket contact meet the requirements. If so, the structural parameters corresponding to the two-dimensional axisymmetric simulation model are used as the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact; otherwise, change the structural parameters of the two-dimensional axisymmetric simulation model and jump to step 2.

[0013] Furthermore, the two-dimensional axisymmetric simulation model includes a plug and socket inner conductor, a plug and socket outer conductor, a socket insulator, a first plug insulator, and a second plug insulator;

[0014] The plug and socket outer conductor is arranged outside the plug and socket inner conductor, and the socket insulator, the first plug insulator and the second plug insulator are arranged in sequence from top to bottom, and the plug and socket outer conductor is arranged between the plug and socket inner conductor;

[0015] The upper end of the second plug insulator is provided with an inclined surface that cooperates with the lower end of the first plug insulator. The upper end of the first plug insulator is provided with a step that cooperates with the inner conductor of the plug and socket and a inclined surface that cooperates with the lower end of the socket insulator. The lower end of the socket insulator is also provided with a step that cooperates with the inner side of the outer conductor of the plug and socket. The outer side of the outer conductor of the plug and socket is also provided with a step.

[0016] Furthermore, the structural parameters of the single-cone structure of the high-power connector plug and socket contact include the diameter of the inner conductor of the plug and socket, the thickness of the socket insulator, the diameter of the inner conductor of the plug and socket at the plug and socket respectively, the thickness of the first plug insulator, the thickness of the second plug insulator, the angle formed by the interface between the socket insulator and the first plug insulator and the interface between the socket insulator and the inner conductor of the plug and socket, the length of the first plug insulator and the thickness of the outer conductor of the plug and socket at the plug.

[0017] Furthermore, the material properties include physical properties of the plug and socket inner conductor, the plug and socket outer conductor, the socket insulator, the first plug insulator, and the second plug insulator.

[0018] Furthermore, the physical properties include relative dielectric constant, electrical conductivity, Young's modulus, Poisson's ratio and density.

[0019] Furthermore, boundary conditions are set for the two-dimensional axisymmetric simulation model obtained in step 2, specifically: fixed constraints are set for the upper boundary g of the outer conductor of the plug and socket, the outer step boundary h of the outer conductor of the plug and socket, and the lower boundary i of the outer conductor of the plug and socket;

[0020] Roller supports are provided on the upper boundary of the inner conductor of the plug and socket, the upper boundary f of the outer conductor of the plug and socket, the upper boundary e of the socket insulator, the lower boundary l of the inner conductor of the plug and socket, the lower boundary k of the second plug insulator, and the lower boundary j of the outer conductor of the plug and socket;

[0021] The upper step boundary a and the slope boundary b of the first plug insulator and the lower step boundary c of the socket insulator are set as contact boundary conditions.

[0022] Furthermore, the two-dimensional axisymmetric simulation model obtained in step 3 is meshed, specifically: a free tetrahedral mesh is set for the two-dimensional axisymmetric simulation model, wherein the mesh density of the first plug insulator is greater than the mesh density of other parts.

[0023] Furthermore, it is determined whether the interface pressure, electric field strength, and volume of the single-cone surface structure of the high-power connector plug and socket contact meet the requirements. Specifically, if the following conditions are met, the requirements are met:

[0024] The electric field strength in the two-dimensional axisymmetric simulation model does not exceed the breakdown field strength of the corresponding part of the material, the electric field strength on boundaries a, b and c is less than the breakdown field strength of the air, and the interface pressure is evenly distributed, there is no part with zero interface pressure, and the interface pressure is within a preset pressure range.

[0025] Furthermore, the breakdown field strength of the air is 3×10 6 kV / m, the preset pressure range is 0.15-0.2Mpa.

[0026] The single-cone structure design system for high-power connector plug and socket contacts includes:

[0027] Two-dimensional axisymmetric simulation model building module: used to build a two-dimensional axisymmetric simulation model based on the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact;

[0028] Material property assignment module: used to assign material properties to the two-dimensional axisymmetric simulation model established by the two-dimensional axisymmetric simulation model establishment module;

[0029] Boundary condition setting module: used to set boundary conditions for the two-dimensional axisymmetric simulation model obtained by the material property assignment module;

[0030] Meshing module: used to mesh the two-dimensional axisymmetric simulation model obtained by the boundary condition setting module;

[0031] Simulation module: used to simulate and calculate the interface pressure and electric field strength of the two-dimensional axisymmetric simulation model at the single cone structure of the plug and socket contact obtained by the grid division module, and judge whether the interface pressure, electric field strength and the volume of the single cone structure of the high-power connector plug and socket contact meet the requirements. If so, the structural parameters corresponding to the two-dimensional axisymmetric simulation model are used as the structural parameters of the single cone structure of the high-power connector plug and socket contact; otherwise, the structural parameters of the two-dimensional axisymmetric simulation model are changed, and the execution steps of the material property assignment module are returned.

[0032] Compared with the prior art, the present invention has the following beneficial technical effects:

[0033] The technical solution provided by the present invention performs a parameterized structural design on the single-cone surface structure of the high-power connector plug and socket contact. The geometric structure of the single-cone surface structure of the high-power connector plug and socket contact can be adjusted by changing different parameter values ​​by establishing a two-dimensional axisymmetric model, thereby realizing rapid modeling and greatly reducing the amount of calculation. By simultaneously judging the electric field strength and interface pressure at the contact and the volume of the single-cone surface structure of the high-power connector plug and socket contact, the structural parameters that meet the requirements can be quickly obtained; the optimization process will not be affected by the test conditions, which greatly improves efficiency and effectively saves manpower, material and financial resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0035] Figure 1 This is a two-dimensional axisymmetric model diagram.

[0036] Among them, 1 is the inner conductor of the plug and socket, 2 is the outer conductor of the plug and socket, 3 is the socket insulator, 4 is the first plug insulator, 5 is the second plug insulator, and 6 is the symmetry axis. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] Example 1

[0040] A method for designing a single-cone surface structure of a high-power connector plug and socket contact comprises the following steps:

[0041] Step 1: Establish a two-dimensional axisymmetric simulation model based on the structural parameters of the single-cone structure of the high-power connector plug and socket contact;

[0042] Step 2: Assign material properties to the two-dimensional axisymmetric simulation model obtained in step 1;

[0043] Step 3: Set boundary conditions for the two-dimensional axisymmetric simulation model obtained in step 2;

[0044] Step 4: Mesh the two-dimensional axisymmetric simulation model obtained in step 3;

[0045] Step 5: Simulate and calculate the interface pressure and electric field strength of the two-dimensional axisymmetric simulation model obtained in step 4 at the single-cone surface structure of the plug and socket contact, and determine whether the interface pressure, electric field strength and volume of the single-cone surface structure of the high-power connector plug and socket contact meet the requirements. If so, the structural parameters corresponding to the two-dimensional axisymmetric simulation model are used as the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact; otherwise, change the structural parameters of the two-dimensional axisymmetric simulation model and jump to step 2.

[0046] Example 2

[0047] The present invention provides a design method for a single-cone surface structure of a plug and socket contact of a high-power connector based on COMSOL software, the method comprising the following steps:

[0048] Step 1: Based on the structural parameters of the single cone structure of the plug and socket contact of the high-power connector, a two-dimensional axisymmetric simulation model of the single cone structure of the plug and socket contact of the high-power connector is established (eg Figure 1As shown); the two-dimensional axisymmetric simulation model includes a plug and socket inner conductor 1, a plug and socket outer conductor 2, a socket insulator 3, a first plug insulator 4 and a second plug insulator 5; the plug and socket outer conductor 2 is arranged on the outside of the plug and socket inner conductor 1, the socket insulator 3, the first plug insulator 4 and the second plug insulator 5 are arranged in sequence from top to bottom, and the plug and socket outer conductor 2 is arranged between the plug and socket inner conductor 1; the upper end of the second plug insulator 5 is provided with an inclined surface that cooperates with the lower end of the first plug insulator 4, the upper end of the first plug insulator 4 is provided with a step that cooperates with the plug and socket inner conductor 1 and a inclined surface that cooperates with the lower end of the socket insulator 3, and the lower end of the socket insulator 3 is also provided with an inclined surface that cooperates with the plug The outer side of the plug and socket outer conductor 2 is also provided with a step, and the two-dimensional axisymmetric simulation model can be divided into two equal parts by the symmetry axis 6; the structural parameters of the single cone structure at the contact of the high-power connector plug and socket include the diameter of the plug and socket inner conductor 1, the thickness of the socket insulator 3, the diameter of the plug and socket inner conductor 1 at the plug and socket respectively, the thickness of the first plug insulator 4, the thickness of the second plug insulator 5, the angle formed by the interface between the socket insulator 3 and the first plug insulator 4 and the interface between the socket insulator 3 and the plug and socket inner conductor 1, the length of the first plug insulator 4 and the thickness of the plug and socket outer conductor 2 at the plug.

[0049] Step 2: assigning material properties to the two-dimensional axisymmetric simulation model; the material properties include physical properties of the plug and socket inner conductor 1, the plug and socket outer conductor 2, the socket insulator 3, the first plug insulator 4, and the second plug insulator 5, the physical properties including relative dielectric constant; conductivity; Young's modulus; Poisson's ratio; and density;

[0050] Step 3: Setting boundary conditions for the two-dimensional axisymmetric simulation model obtained in step 2. Specifically, setting fixed constraints on the upper boundary g of the plug and socket outer conductor 2, the outer step boundary h of the plug and socket outer conductor 2, and the lower boundary i of the plug and socket outer conductor 2; setting roller supports on the upper boundary of the plug and socket inner conductor 1, the upper boundary f of the plug and socket outer conductor 2, the upper boundary e of the socket insulator 3, the lower boundary l of the plug and socket inner conductor 1, the lower boundary k of the second plug insulator 5, and the lower boundary j of the plug and socket outer conductor 2; and setting contact boundary conditions on the upper step boundary a and the inclined boundary b of the first plug insulator 4, and the lower step boundary c of the socket insulator 3.

[0051] Step 4, meshing the two-dimensional axisymmetric simulation model obtained in step 3 using a free tetrahedron mesh, specifically: setting a free tetrahedron mesh for the two-dimensional axisymmetric simulation model, wherein the mesh density of the first plug insulator 4 is greater than the mesh density of other parts.

[0052] Step 5, simulating and calculating the interface pressure and electric field intensity of the two-dimensional axisymmetric simulation model obtained in step 4 at the single cone structure of the plug and socket contact;

[0053] The interface pressure is the interface formed by the contact between the socket insulator 3 and the first plug insulator 4, the partial interface formed by the contact between the socket insulator 3 and the plug and socket inner conductor 1, and the socket insulator 3 and the plug and socket outer conductor 2, that is, Figure 1 The pressure on the interface pointed by a, b, and c.

[0054] Step 6: Determine whether to proceed to step 7 or step 8 based on whether the interface pressure and electric field strength, as well as the volume of the single-cone structure at the contact of the high-power connector plug and socket, meet preset requirements. The conditions for meeting the preset requirements are: the electric field strength in the overall structure does not exceed the breakdown field strength of the corresponding part of the material; the electric field strength at the interface formed by the contact between the socket insulator 3 and the plug and socket inner conductor 1, and the contact between the socket insulator 3 and the plug and socket outer conductor 2 is less than the breakdown field strength of air by 3×10 6 kV / m, and the interface pressure is evenly distributed, there is no part where the interface pressure is zero, and the interface pressure is between 0.15-0.2Mpa.

[0055] Step 7: If yes, use the structural parameters corresponding to the two-dimensional axisymmetric simulation model as the structural parameters of the single-cone surface structure of the plug and socket contact of the high-power connector;

[0056] Step 8: If not, change the structural parameters of the two-dimensional axisymmetric simulation model and jump to step 4.

[0057] After multiple calculations, the optimal parameters corresponding to the interface pressure and electric field strength, as well as the volume of the single-cone structure at the high-power connector plug and socket contacts, were selected as the optimal parameters. This method effectively optimizes the single-cone structure at the high-power connector plug and socket contacts, thereby reducing the failure rate of high-power connectors. The optimization process is unaffected by test conditions, significantly improving efficiency and effectively saving manpower, material, and financial resources.

[0058] Example 3

[0059] The present invention also provides a single-cone surface structure design system for high-power connector plug and socket contacts, comprising:

[0060] Two-dimensional axisymmetric simulation model building module: used to build a two-dimensional axisymmetric simulation model based on the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact;

[0061] Material property assignment module: used to assign material properties to the two-dimensional axisymmetric simulation model established by the two-dimensional axisymmetric simulation model establishment module;

[0062] Boundary condition setting module: used to set boundary conditions for the two-dimensional axisymmetric simulation model obtained by the material property assignment module;

[0063] Meshing module: used to mesh the two-dimensional axisymmetric simulation model obtained by the boundary condition setting module;

[0064] Simulation module: used to simulate and calculate the interface pressure and electric field strength of the two-dimensional axisymmetric simulation model at the single cone structure of the plug and socket contact obtained by the grid division module, and judge whether the interface pressure, electric field strength and the volume of the single cone structure of the high-power connector plug and socket contact meet the requirements. If so, the structural parameters corresponding to the two-dimensional axisymmetric simulation model are used as the structural parameters of the single cone structure of the high-power connector plug and socket contact; otherwise, the structural parameters of the two-dimensional axisymmetric simulation model are changed, and the execution steps of the material property assignment module are returned.

[0065] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0066] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0067] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0068] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art may still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A single-cone surface structure design method for high-power connector plug and socket contacts, characterized in that: The following steps are involved: Step 1: establishing a two-dimensional axisymmetric simulation model based on the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact; the two-dimensional axisymmetric simulation model includes a plug and socket inner conductor (1), a plug and socket outer conductor (2), a socket insulator (3), a first plug insulator (4) and a second plug insulator (5); The plug and socket outer conductor (2) is arranged outside the plug and socket inner conductor (1), and the socket insulator (3), the first plug insulator (4) and the second plug insulator (5) are arranged in sequence from top to bottom between the plug and socket outer conductor (2) and the plug and socket inner conductor (1); The upper end of the second plug insulator (5) is provided with an inclined surface that matches the lower end of the first plug insulator (4); the upper end of the first plug insulator (4) is provided with a step that matches the inner conductor (1) of the plug and socket and an inclined surface that matches the lower end of the socket insulator (3); the lower end of the socket insulator (3) is also provided with a step that matches the inner side of the outer conductor (2) of the plug and socket, and the outer side of the outer conductor (2) of the plug and socket is also provided with a step; Step 2: Assign material properties to the two-dimensional axisymmetric simulation model obtained in step 1; Step 3: setting boundary conditions for the two-dimensional axisymmetric simulation model obtained in step 2; specifically, setting fixed constraints on the upper boundary g of the plug and socket outer conductor (2), the outer step boundary h of the plug and socket outer conductor (2), and the lower boundary i of the plug and socket outer conductor (2); The upper side boundary of the plug and socket inner conductor (1), the upper side boundary f of the plug and socket outer conductor (2), the upper side boundary e of the socket insulator (3), the lower side boundary l of the plug and socket inner conductor (1), the lower side boundary k of the second plug insulator (5) and the lower side boundary j of the plug and socket outer conductor (2) are provided with roller supports; The upper step boundary a and the slope boundary b of the first plug insulator (4) and the lower step boundary c of the socket insulator (3) are set as contact boundary conditions; Step 4: Mesh the two-dimensional axisymmetric simulation model obtained in step 3; Step 5: Simulate and calculate the interface pressure and electric field strength of the two-dimensional axisymmetric simulation model obtained in step 4 at the single-cone surface structure of the plug and socket contact, and determine whether the interface pressure, electric field strength and volume of the single-cone surface structure of the high-power connector plug and socket contact meet the requirements. If so, the structural parameters corresponding to the two-dimensional axisymmetric simulation model are used as the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact; otherwise, change the structural parameters of the two-dimensional axisymmetric simulation model and jump to step 2.

2. The method for designing a single-cone surface structure of a high-power connector plug and socket contact according to claim 1, characterized in that: The structural parameters of the single-cone structure of the high-power connector plug and socket contact include the diameter of the plug and socket inner conductor (1), the thickness of the socket insulator (3), the diameter of the plug and socket inner conductor (1) at the plug and socket respectively, the thickness of the first plug insulator (4), the thickness of the second plug insulator (5), the angle formed by the interface between the socket insulator (3) and the first plug insulator (4) and the interface between the socket insulator (3) and the plug and socket inner conductor (1), the length of the first plug insulator (4), and the thickness of the plug and socket outer conductor (2) at the plug.

3. The method for designing a single-cone surface structure of a high-power connector plug and socket contact according to claim 1, characterized in that: The material properties include physical properties of a plug and socket inner conductor (1), a plug and socket outer conductor (2), a socket insulator (3), a first plug insulator (4) and a second plug insulator (5).

4. The method for designing a single-cone surface structure of a high-power connector plug and socket contact according to claim 3, characterized in that: The physical properties include relative permittivity, electrical conductivity, Young's modulus, Poisson's ratio, and density.

5. The method for designing a single-cone surface structure of a high-power connector plug and socket contact according to claim 1, characterized in that: The two-dimensional axisymmetric simulation model obtained in step 3 is meshed, specifically: a free tetrahedron mesh is set for the two-dimensional axisymmetric simulation model, wherein the mesh density of the first plug insulator (4) is greater than the mesh density of other parts.

6. The method for designing a single-cone surface structure of a high-power connector plug and socket contact according to claim 1, characterized in that: Determine whether the interface pressure, electric field strength, and volume of the single-cone structure of the high-power connector plug and socket contacts meet the requirements. Specifically, if the following conditions are met, the requirements are met: The electric field strength in the two-dimensional axisymmetric simulation model does not exceed the breakdown field strength of the corresponding part of the material, the electric field strength on boundaries a, b and c is less than the breakdown field strength of the air, and the interface pressure is evenly distributed, there is no part with zero interface pressure, and the interface pressure is within a preset pressure range.

7. The method for designing a single-cone surface structure of a high-power connector plug and socket contact according to claim 6, characterized in that: The breakdown field strength of the air is 3×10 6 V / m, the preset pressure range is 0.15-0.2Mpa.

8. Single cone surface structure design system for high power connector plug and socket contacts, characterized by: include: A two-dimensional axisymmetric simulation model establishment module is used to establish a two-dimensional axisymmetric simulation model based on the structural parameters of the single-cone surface structure of the high-power connector plug and socket contact; the two-dimensional axisymmetric simulation model includes a plug and socket inner conductor (1), a plug and socket outer conductor (2), a socket insulator (3), a first plug insulator (4), and a second plug insulator (5); The plug and socket outer conductor (2) is arranged outside the plug and socket inner conductor (1), and the socket insulator (3), the first plug insulator (4) and the second plug insulator (5) are arranged in sequence from top to bottom between the plug and socket outer conductor (2) and the plug and socket inner conductor (1); The upper end of the second plug insulator (5) is provided with an inclined surface that matches the lower end of the first plug insulator (4); the upper end of the first plug insulator (4) is provided with a step that matches the inner conductor (1) of the plug and socket and an inclined surface that matches the lower end of the socket insulator (3); the lower end of the socket insulator (3) is also provided with a step that matches the inner side of the outer conductor (2) of the plug and socket, and the outer side of the outer conductor (2) of the plug and socket is also provided with a step; Material property assignment module: used to assign material properties to the two-dimensional axisymmetric simulation model established by the two-dimensional axisymmetric simulation model establishment module; Boundary condition setting module: used to set boundary conditions for the two-dimensional axisymmetric simulation model obtained by the material property assignment module; specifically, setting fixed constraints on the upper boundary g of the plug and socket outer conductor (2), the outer step boundary h of the plug and socket outer conductor (2), and the lower boundary i of the plug and socket outer conductor (2); The upper side boundary of the plug and socket inner conductor (1), the upper side boundary f of the plug and socket outer conductor (2), the upper side boundary e of the socket insulator (3), the lower side boundary l of the plug and socket inner conductor (1), the lower side boundary k of the second plug insulator (5) and the lower side boundary j of the plug and socket outer conductor (2) are provided with roller supports; The upper step boundary a and the slope boundary b of the first plug insulator (4) and the lower step boundary c of the socket insulator (3) are set as contact boundary conditions; Meshing module: used to mesh the two-dimensional axisymmetric simulation model obtained by the boundary condition setting module; Simulation module: used to simulate and calculate the interface pressure and electric field strength of the two-dimensional axisymmetric simulation model at the single cone structure of the plug and socket contact obtained by the grid division module, and judge whether the interface pressure, electric field strength and the volume of the single cone structure of the high-power connector plug and socket contact meet the requirements. If so, the structural parameters corresponding to the two-dimensional axisymmetric simulation model are used as the structural parameters of the single cone structure of the high-power connector plug and socket contact; otherwise, the structural parameters of the two-dimensional axisymmetric simulation model are changed, and the execution steps of the material property assignment module are returned.

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