A terminal crimping optimization analysis method for new energy vehicle wiring harness

Abstract

The present invention relates to the technical field of crimping parameter processing, and in particular to a terminal crimping optimization analysis method for a new energy vehicle wiring harness. The method comprises the following steps: performing spatial structure topological analysis on the crimping process of the new energy vehicle wiring harness terminal, and performing terminal position and direction analysis to obtain the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal; performing three-dimensional modeling processing and crimping parameter analysis on the spatial topological structure of the new energy vehicle wiring harness to obtain the crimping deformation parameters of the automobile wiring harness terminal and the crimping contact pressure distribution parameters of the automobile wiring harness terminal; performing terminal crimping quality assessment analysis and terminal crimping optimization analysis on the crimping process of the new energy vehicle wiring harness terminal, generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme, and executing the corresponding terminal crimping parameter adjustment optimization process. The present invention can achieve the optimization of terminal crimping parameters.

Description

Technical Field

[0001] The present invention relates to the technical field of crimping parameter processing, and in particular to a terminal crimping optimization analysis method for a new energy vehicle wiring harness. Background Art

[0002] Crimping technology is a new technology for connecting terminals to wires. It is a process that directly connects terminals to wires through crimping dies. It has good electrical and mechanical properties, can achieve airtight connection and has good environmental adaptability. In recent years, with the development of digital manufacturing and intelligent manufacturing technologies, some new terminal crimping optimization and analysis methods have begun to attract attention. These methods are mainly based on data acquisition and analysis, simulation and intelligent control technologies, which can realize real-time monitoring, optimization adjustment and precise control of the terminal crimping process, thereby improving the quality and stability of terminal connections and reducing production costs and resource consumption. However, the traditional terminal crimping process mainly relies on experience and manual adjustment, and often has problems such as difficulty in optimizing crimping process parameters and low terminal crimping quality, which limits their wide application in the production process of new energy vehicles. Summary of the invention

[0003] Based on this, it is necessary for the present invention to provide a terminal crimping optimization analysis method for new energy vehicle wiring harnesses to solve at least one of the above technical problems.

[0004] To achieve the above purpose, a terminal crimping optimization analysis method for a new energy vehicle wiring harness comprises the following steps:

[0005] Step S1: performing a spatial structure topological analysis on the crimping process of the new energy vehicle wiring harness terminal to obtain the spatial topological structure of the new energy vehicle wiring harness; performing a terminal position and direction analysis on the spatial topological structure of the new energy vehicle wiring harness to obtain the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal; performing a wiring harness three-dimensional modeling process on the wiring harness spatial topological structure of the new energy vehicle wiring harness based on the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal to generate a three-dimensional spatial model of the new energy vehicle wiring harness;

[0006] Step S2: performing crimping parameter analysis on the three-dimensional space model of the new energy vehicle wiring harness based on the crimping process of the new energy vehicle wiring harness terminal to obtain the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal;

[0007] Step S3: performing terminal crimping quality evaluation and analysis on the crimping process of the new energy vehicle wiring harness terminal according to the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal, and obtaining the crimping quality evaluation result of the new energy vehicle wiring harness terminal;

[0008] Step S4: performing terminal crimping optimization analysis on the new energy vehicle wiring harness terminal crimping process according to the new energy vehicle wiring harness terminal crimping quality assessment result, generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme to execute the corresponding terminal crimping parameter adjustment optimization process.

[0009] The present invention firstly analyzes the spatial structure topology of the new energy vehicle wiring harness in the process of crimping the terminal of the new energy vehicle wiring harness, so as to analyze the connection relationship, node distribution and topological characteristics between the internal structures of the vehicle wiring harness, thereby constructing the spatial topological structure of the vehicle wiring harness, and this analysis helps to understand the spatial layout mode between the overall structure of the vehicle wiring harness and its internal structure, so as to provide a basis for the subsequent terminal position positioning analysis and wiring harness three-dimensional modeling processing. By performing terminal position positioning analysis on the spatial topological structure of the new energy vehicle wiring harness, the position of each terminal in the vehicle wiring harness can be analyzed, and the specific position of the terminal in the wiring harness is determined, which provides an important reference for the subsequent terminal crimping. This analysis can ensure that the terminal is crimped in the correct position, thereby ensuring the connection quality and reliability of the wiring harness. At the same time, by monitoring the terminal direction of the spatial topological structure of the new energy vehicle wiring harness, the crimping direction of the terminal can be monitored, and the correct direction of the terminal in the crimping process can be ensured, avoiding the wrong connection and wiring problems that occur, thereby ensuring the normal operation and reliability of the vehicle wiring harness. By performing three-dimensional modeling of the spatial topological structure of the wiring harness of new energy vehicles based on the crimping position and crimping direction of the wiring harness terminals of new energy vehicles, a three-dimensional spatial model of the wiring harness of the vehicle can be established, which can intuitively present the three-dimensional virtual spatial layout of the wiring harness of the vehicle, and provide an important reference for the subsequent processing process. This three-dimensional modeling process can help better understand the structure and layout characteristics of the terminals of the wiring harness during the crimping process of the wiring harness of the vehicle, thereby providing data support for the subsequent optimization of the terminal crimping scheme and improving the efficiency and quality of the terminal crimping. Secondly, by analyzing the crimping parameters based on the three-dimensional spatial model of the wiring harness of new energy vehicles during the crimping process of the wiring harness terminals of new energy vehicles, the deformation parameters of the wiring harness terminals during the crimping process can be analyzed. These parameters can reveal the deformation of the wiring harness terminals during the crimping process, which is helpful to evaluate the impact of the crimping process on the wiring harness terminals and provide a reference for the optimization design. In addition, the contact pressure distribution parameters of the wiring harness terminals crimping can be obtained. These parameters can more accurately describe the contact between the wiring harness terminals, thereby providing an important reference for the subsequent crimping quality evaluation and analysis process. Then, the terminal crimping quality evaluation and analysis of the new energy vehicle wiring harness terminal crimping process was carried out according to the automobile wiring harness terminal crimping deformation parameters and automobile wiring harness terminal crimping contact pressure distribution parameters. This analysis aims to evaluate the overall quality of the terminal during the crimping process, including the degree of deformation and the uniformity of contact pressure distribution. The crimping quality evaluation results obtained through comprehensive evaluation can fully understand the quality status of the terminal during the crimping process, thereby providing an important reference for optimizing the crimping process parameters and improving the terminal connection quality.Finally, the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminals are optimized and analyzed according to the crimping quality assessment results of the new energy vehicle wiring harness terminals to generate a crimping parameter optimization plan and execute the corresponding crimping parameter adjustment optimization process. This step can determine the optimal terminal crimping parameter combination through in-depth analysis of the terminal crimping parameter set to maximize the terminal connection quality. This process not only helps to optimize the terminal crimping process parameters and improve the reliability and stability of the terminal connection, but also provides important support for improving the efficiency and quality of the entire crimping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments thereof made with reference to the following drawings:

[0011] Figure 1 It is a schematic diagram of the steps of the method for optimizing the analysis of the terminal crimping of the wiring harness of a new energy vehicle of the present invention;

[0012] Figure 2 for Figure 1 Detailed step flow diagram of step S1;

[0013] Figure 3 for Figure 2 Detailed step flow chart of step S15 in FIG. DETAILED DESCRIPTION

[0014] The following is a clear and complete description of the technical method of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0015] In addition, the accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. The functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor methods and / or microcontroller methods.

[0016] It should be understood that, although the terms "first", "second", etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are used only to distinguish one unit from another unit. For example, without departing from the scope of the exemplary embodiments, the first unit may be referred to as the second unit, and similarly the second unit may be referred to as the first unit. The term "and / or" used herein includes any and all combinations of one or more of the listed associated items.

[0017] To achieve this, please refer to Figures 1 to 3 The present invention provides a terminal crimping optimization analysis method for a new energy vehicle wiring harness, comprising the following steps:

[0018] Step S1: performing a spatial structure topological analysis on the crimping process of the new energy vehicle wiring harness terminal to obtain the spatial topological structure of the new energy vehicle wiring harness; performing a terminal position and direction analysis on the spatial topological structure of the new energy vehicle wiring harness to obtain the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal; performing a wiring harness three-dimensional modeling process on the wiring harness spatial topological structure of the new energy vehicle wiring harness based on the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal to generate a three-dimensional spatial model of the new energy vehicle wiring harness;

[0019] Step S2: performing crimping parameter analysis on the three-dimensional space model of the new energy vehicle wiring harness based on the crimping process of the new energy vehicle wiring harness terminal to obtain the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal;

[0020] Step S3: performing terminal crimping quality evaluation and analysis on the crimping process of the new energy vehicle wiring harness terminal according to the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal, and obtaining the crimping quality evaluation result of the new energy vehicle wiring harness terminal;

[0021] Step S4: performing terminal crimping optimization analysis on the new energy vehicle wiring harness terminal crimping process according to the new energy vehicle wiring harness terminal crimping quality assessment result, generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme to execute the corresponding terminal crimping parameter adjustment optimization process.

[0022] In the embodiment of the present invention, please refer to Figure 1 As shown, it is a schematic diagram of the steps of the terminal crimping optimization analysis method of the new energy vehicle wiring harness of the present invention. In this example, the terminal crimping optimization analysis method of the new energy vehicle wiring harness includes the following steps:

[0023] Step S1: performing a spatial structure topological analysis on the crimping process of the new energy vehicle wiring harness terminal to obtain the spatial topological structure of the new energy vehicle wiring harness; performing a terminal position and direction analysis on the spatial topological structure of the new energy vehicle wiring harness to obtain the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal; performing a wiring harness three-dimensional modeling process on the wiring harness spatial topological structure of the new energy vehicle wiring harness based on the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal to generate a three-dimensional spatial model of the new energy vehicle wiring harness;

[0024] The embodiment of the present invention uses a spatial layout analysis method to explore and analyze the spatial layout of the relevant structures in the wiring harness of a new energy vehicle during the crimping process of the wiring harness terminal of the new energy vehicle, so as to deeply understand the spatial layout law of the wiring harness of the vehicle, and reveal the spatial distribution law of the wiring harness of the vehicle, including the position distribution of its internal structure, the wiring path, etc. At the same time, the spatial distribution law obtained by combining the analysis is used to deeply study the spatial relationship and connection mode between the relevant structures in the wiring harness of the new energy vehicle during the crimping process of the wiring harness terminal of the new energy vehicle, and also analyzes the connection relationship, node distribution and topological characteristics between the internal structures of the wiring harness of the vehicle by combining the spatial structure topological analysis method, so as to construct a spatial topological structure that reveals the connection relationship between the internal structures of the wiring harness of the vehicle, thereby obtaining the spatial topological structure of the wiring harness of the new energy vehicle. The position of the wiring harness terminal of the new energy vehicle in the spatial topological structure of the wiring harness of the wiring harness is positioned by using a spatial positioning algorithm to determine the specific position coordinates of each wiring harness terminal of the wiring harness in space, thereby obtaining the crimping position of the wiring harness terminal of the new energy vehicle. Secondly, by monitoring and processing the crimping direction of the automobile wiring harness terminals in the spatial topological structure of the new energy vehicle wiring harness during the crimping process, the crimping direction of each automobile wiring harness terminal is monitored and analyzed, thereby obtaining the crimping direction of the new energy vehicle wiring harness terminal. Then, by combining the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal obtained by analysis, the spatial topological structure of the new energy vehicle wiring harness is modeled using 3D modeling software, so that the terminal position and crimping direction are applied to the spatial topological structure of the wiring harness to establish a 3D spatial model of the wiring harness, and to help better understand the structure and layout characteristics of the terminals of the automobile wiring harness during the crimping process, and finally generate a 3D spatial model of the new energy vehicle wiring harness.

[0025] Step S2: performing crimping parameter analysis on the three-dimensional space model of the new energy vehicle wiring harness based on the crimping process of the new energy vehicle wiring harness terminal to obtain the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal;

[0026] The embodiment of the present invention analyzes the design information parameters in the three-dimensional space model of the new energy vehicle wiring harness, including parameters such as geometric shape, material properties, and connection methods, and divides the three-dimensional space model of the new energy vehicle wiring harness into many small finite units, such as tetrahedron or hexahedron elements, by using finite element analysis software to discretize the three-dimensional space model of the new energy vehicle wiring harness into a finite element model. At the same time, according to the expected displacement of the automobile wiring harness terminal during the crimping process of the new energy vehicle wiring harness terminal, the displacement boundary conditions of the terminal in the divided finite element space model of the new energy vehicle wiring harness are set, and according to the expected displacement of the automobile wiring harness terminal during the crimping process of the new energy vehicle wiring harness terminal, the displacement boundary conditions of the terminal in the finite element space model of the new energy vehicle wiring harness are set. The magnitude and direction of the force applied during the crimping process set the external force boundary conditions of the terminals in the finite element space model of the new energy vehicle wiring harness. Secondly, the deformation coupling effect of the terminals during the crimping process is evaluated and analyzed through the displacement boundary conditions, and applied to the simulation software to perform crimping simulation analysis on the corresponding automotive wiring harness terminals in the finite element space model to simulate the deformation changes of the terminals during the crimping process, and quantify and calculate the various deformation parameters of the automotive wiring harness terminals during the crimping process, such as the twisting, stretching, compression and other parameters of the automotive wiring harness terminals during the crimping process, so as to obtain the crimping deformation parameters of the automotive wiring harness terminals. Then, the pre-set force boundary conditions are applied to the corresponding automotive wiring harness terminals in the finite element space model to simulate the deformation behavior of the automotive wiring harness terminals during the crimping process, and analyze and explore the pressure contact conditions and pressure distribution parameters between the terminals, including the pressure distribution position, direction and magnitude, and finally obtain the crimping contact pressure distribution parameters of the automotive wiring harness terminals.

[0027] Step S3: performing terminal crimping quality evaluation and analysis on the crimping process of the new energy vehicle wiring harness terminal according to the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal, and obtaining the crimping quality evaluation result of the new energy vehicle wiring harness terminal;

[0028] The embodiment of the present invention uses a deformation degree evaluation algorithm to evaluate and analyze the corresponding new energy vehicle wiring harness terminal crimping process by combining the analyzed automobile wiring harness terminal crimping deformation parameters (including twisting, stretching, compression and other parameters) to evaluate and analyze the deformation degree of the automobile wiring harness terminal during the crimping process, and calculates the contact distribution area of ​​each pressure distribution position of the automobile wiring harness terminal during the crimping process according to each pressure distribution position in the automobile wiring harness terminal crimping contact pressure distribution parameter, and at the same time, the contact distribution area at each pressure distribution position is added to obtain the total contact pressure distribution area. Secondly, by using a high-resolution imaging device or a microscope, the contact area between the automobile wiring harness terminals in the new energy vehicle wiring harness terminal crimping process is observed and measured in real time to observe and measure the crimping contact area between the wiring harness terminals. At the same time, by comparing the crimping contact area with the contact pressure distribution area The products are compared and analyzed to evaluate the uniformity of pressure distribution during the crimping process, including whether the pressure distribution in the contact surface area between the wiring harness terminals is uniform and whether there is a situation where the local pressure is too large or too small, that is, whether the pressure distribution of the terminals during the crimping process is uniformly distributed on the contact area. Then, by combining the degree of crimping deformation and the uniformity of pressure distribution obtained by analysis and assigning corresponding weights to each indicator, each indicator and the product of the indicator weight are evaluated and calculated by using the cumulative summation method to quantitatively calculate the corresponding crimping quality score value, and the crimping quality score value obtained by quantitative calculation is compared and judged according to the preset crimping quality standard value. If it is greater than or equal to the standard value, it is judged as good quality, otherwise it is judged as bad quality, so as to fully understand the quality status of the terminals during the crimping process, and finally obtain the crimping quality evaluation results of the new energy vehicle wiring harness terminals.

[0029] Step S4: performing terminal crimping optimization analysis on the new energy vehicle wiring harness terminal crimping process according to the new energy vehicle wiring harness terminal crimping quality assessment result, generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme to execute the corresponding terminal crimping parameter adjustment optimization process.

[0030] The embodiment of the present invention uses an influence correlation analysis method (such as calculating a correlation coefficient) to analyze the terminal crimping parameters (including crimping force, crimping time, crimping head shape, crimping contact pressure, crimping deformation and other parameters) in the crimping process of the new energy vehicle wiring harness terminal by combining the evaluation results of the crimping quality of the new energy vehicle wiring harness terminal obtained by the evaluation analysis, so as to quantitatively calculate and explore the degree of correlation of the influence of different crimping parameters on the crimping quality of the automobile wiring harness terminal, and further screen out the most influential key parameters according to the preset degree threshold and collect them in a data set, and also set the optimization goal according to the terminal crimping effect (such as improving the terminal crimping quality, reducing costs, improving production efficiency, etc.), and determine the optimal terminal crimping parameter combination from the key parameter set according to the set optimization goal, so as to maximize the optimization goal to formulate a corresponding terminal crimping parameter combination optimization plan, thereby generating a new energy vehicle wiring harness terminal crimping parameter optimization plan, and finally executing an optimization process including adjusting the crimping force and crimping time or adjusting the crimping time and crimping head shape and other parameter combinations, in the hope of achieving the set optimization goal.

[0031] The present invention firstly analyzes the spatial structure topology of the new energy vehicle wiring harness in the process of crimping the terminal of the new energy vehicle wiring harness, so as to analyze the connection relationship, node distribution and topological characteristics between the internal structures of the vehicle wiring harness, thereby constructing the spatial topological structure of the vehicle wiring harness, and this analysis helps to understand the spatial layout mode between the overall structure of the vehicle wiring harness and its internal structure, so as to provide a basis for the subsequent terminal position positioning analysis and wiring harness three-dimensional modeling processing. By performing terminal position positioning analysis on the spatial topological structure of the new energy vehicle wiring harness, the position of each terminal in the vehicle wiring harness can be analyzed, and the specific position of the terminal in the wiring harness is determined, which provides an important reference for the subsequent terminal crimping. This analysis can ensure that the terminal is crimped in the correct position, thereby ensuring the connection quality and reliability of the wiring harness. At the same time, by monitoring the terminal direction of the spatial topological structure of the new energy vehicle wiring harness, the crimping direction of the terminal can be monitored, and the correct direction of the terminal in the crimping process can be ensured, avoiding the wrong connection and wiring problems that occur, thereby ensuring the normal operation and reliability of the vehicle wiring harness. By performing three-dimensional modeling of the spatial topological structure of the wiring harness of new energy vehicles based on the crimping position and crimping direction of the wiring harness terminals of new energy vehicles, a three-dimensional spatial model of the wiring harness of the vehicle can be established, which can intuitively present the three-dimensional virtual spatial layout of the wiring harness of the vehicle, and provide an important reference for the subsequent processing process. This three-dimensional modeling process can help better understand the structure and layout characteristics of the terminals of the wiring harness during the crimping process of the wiring harness of the vehicle, thereby providing data support for the subsequent optimization of the terminal crimping scheme and improving the efficiency and quality of the terminal crimping. Secondly, by analyzing the crimping parameters based on the three-dimensional spatial model of the wiring harness of new energy vehicles during the crimping process of the wiring harness terminals of new energy vehicles, the deformation parameters of the wiring harness terminals during the crimping process can be analyzed. These parameters can reveal the deformation of the wiring harness terminals during the crimping process, which is helpful to evaluate the impact of the crimping process on the wiring harness terminals and provide a reference for the optimization design. In addition, the contact pressure distribution parameters of the wiring harness terminals crimping can be obtained. These parameters can more accurately describe the contact between the wiring harness terminals, thereby providing an important reference for the subsequent crimping quality evaluation and analysis process. Then, the terminal crimping quality evaluation and analysis of the new energy vehicle wiring harness terminal crimping process was carried out according to the automobile wiring harness terminal crimping deformation parameters and automobile wiring harness terminal crimping contact pressure distribution parameters. This analysis aims to evaluate the overall quality of the terminal during the crimping process, including the degree of deformation and the uniformity of contact pressure distribution. The crimping quality evaluation results obtained through comprehensive evaluation can fully understand the quality status of the terminal during the crimping process, thereby providing an important reference for optimizing the crimping process parameters and improving the terminal connection quality.Finally, the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminals are optimized and analyzed according to the crimping quality assessment results of the new energy vehicle wiring harness terminals to generate a crimping parameter optimization plan and execute the corresponding crimping parameter adjustment optimization process. This step can determine the optimal terminal crimping parameter combination through in-depth analysis of the terminal crimping parameter set to maximize the terminal connection quality. This process not only helps to optimize the terminal crimping process parameters and improve the reliability and stability of the terminal connection, but also provides important support for improving the efficiency and quality of the entire crimping process.

[0032] Preferably, step S1 comprises the following steps:

[0033] Step S11: performing spatial layout exploration and analysis on the wiring harness of the new energy vehicle during the crimping process of the wiring harness terminal of the new energy vehicle to obtain spatial layout distribution law data of the wiring harness of the new energy vehicle;

[0034] Step S12: performing a spatial structure topological analysis on the new energy vehicle wiring harness during the crimping process of the new energy vehicle wiring harness terminals based on the spatial layout distribution law data of the new energy vehicle wiring harness to obtain a spatial topological structure of the new energy vehicle wiring harness;

[0035] Step S13: performing terminal position location analysis on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the crimping position of the terminal of the wiring harness of the new energy vehicle;

[0036] Step S14: performing terminal direction monitoring processing on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the crimping direction of the terminal of the wiring harness of the new energy vehicle;

[0037] Step S15: performing three-dimensional modeling of the wiring harness space topology structure of the new energy vehicle based on the crimping position and crimping direction of the wiring harness terminal of the new energy vehicle to generate a three-dimensional space model of the wiring harness of the new energy vehicle.

[0038] As an embodiment of the present invention, refer to Figure 2 As shown, Figure 1 Detailed step flow diagram of step S1 in FIG. 1 , in this embodiment, step S1 includes the following steps:

[0039] Step S11: performing spatial layout exploration and analysis on the wiring harness of the new energy vehicle during the crimping process of the wiring harness terminal of the new energy vehicle to obtain spatial layout distribution law data of the wiring harness of the new energy vehicle;

[0040] The embodiment of the present invention uses a spatial layout analysis method to explore and analyze the spatial layout of related structures within the new energy vehicle wiring harness during the crimping process of the new energy vehicle wiring harness terminals, so as to deeply understand the spatial layout law of the automobile wiring harness, and reveal the spatial distribution law of the automobile wiring harness, including the position distribution of its internal structure, wiring path, etc., and finally obtain the spatial layout distribution law data of the new energy vehicle wiring harness.

[0041] Step S12: performing a spatial structure topological analysis on the new energy vehicle wiring harness during the crimping process of the new energy vehicle wiring harness terminals based on the spatial layout distribution law data of the new energy vehicle wiring harness to obtain a spatial topological structure of the new energy vehicle wiring harness;

[0042] The embodiment of the present invention deeply studies the spatial relationship and connection method between the related structures in the new energy vehicle wiring harness during the crimping process of the new energy vehicle wiring harness terminal by combining the spatial layout distribution law data obtained by analysis, and combines the use of spatial structure topological analysis method for analysis to analyze the connection relationship, node distribution and topological characteristics between the internal structures of the automobile wiring harness, thereby constructing a spatial topological structure that reveals the connection relationship between the internal structures of the automobile wiring harness, and at the same time reveals the overall structure of the automobile wiring harness and the spatial layout method between its internal structures, and finally obtains the spatial topological structure of the new energy vehicle wiring harness.

[0043] Step S13: performing terminal position location analysis on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the crimping position of the terminal of the wiring harness of the new energy vehicle;

[0044] The embodiment of the present invention uses a spatial positioning algorithm to locate the position of the automobile wiring harness terminal in the spatial topological structure of the new energy automobile wiring harness, so as to determine the specific position coordinates of each automobile wiring harness terminal in space, and finally obtain the crimping position of the new energy automobile wiring harness terminal.

[0045] Step S14: performing terminal direction monitoring processing on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the crimping direction of the terminal of the wiring harness of the new energy vehicle;

[0046] The embodiment of the present invention monitors and processes the crimping direction of the automobile wiring harness terminals in the spatial topological structure of the new energy vehicle wiring harness during the crimping process, so as to monitor and analyze the crimping direction of each automobile wiring harness terminal, and ensure that the direction of the automobile wiring harness terminals during the crimping process can be accurately monitored to be correct, and finally obtain the crimping direction of the new energy vehicle wiring harness terminals.

[0047] Step S15: performing three-dimensional modeling of the wiring harness space topology structure of the new energy vehicle based on the crimping position and crimping direction of the wiring harness terminal of the new energy vehicle to generate a three-dimensional space model of the wiring harness of the new energy vehicle.

[0048] The embodiment of the present invention uses three-dimensional modeling software to model the spatial topological structure of the new energy vehicle wiring harness by combining the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal obtained by analysis, so as to apply the terminal position and crimping direction to the spatial topological structure of the wiring harness to establish a three-dimensional spatial model of the wiring harness, and help to better understand the structure and layout characteristics of the terminals of the automobile wiring harness during the crimping process, and finally generate a three-dimensional spatial model of the new energy vehicle wiring harness.

[0049] The present invention firstly explores and analyzes the spatial layout of the wiring harness of new energy vehicles during the crimping process of the wiring harness terminals of new energy vehicles, aiming to gain an in-depth understanding of the spatial layout law of the wiring harness of the vehicle. By collecting and analyzing the spatial layout data of the wiring harness of the vehicle, the spatial distribution law of the wiring harness of the vehicle can be revealed, including the position distribution of its internal structure, the wiring path, etc. This analysis can provide an important reference for the subsequent spatial structure topological analysis, which helps to optimize the spatial layout of the wiring harness of the vehicle, thereby providing basic data guarantee for the subsequent processing process. Secondly, by performing a spatial structure topological analysis on the wiring harness of new energy vehicles during the crimping process of the wiring harness terminals of new energy vehicles based on the data of the spatial layout distribution law of the wiring harness of new energy vehicles, the connection relationship, node distribution and topological characteristics between the internal structures of the wiring harness of the vehicle are analyzed, thereby constructing the spatial topological structure of the wiring harness of the vehicle. This analysis helps to understand the overall structure of the wiring harness of the vehicle and the spatial layout mode between its internal structures, thereby providing a basis for the subsequent terminal position positioning analysis and wiring harness three-dimensional modeling processing. Then, by analyzing the terminal position of the spatial topological structure of the wiring harness of new energy vehicles, the position of each terminal in the wiring harness of the vehicle can be analyzed, and the specific position of the terminal in the wiring harness can be determined, which provides an important reference for the subsequent terminal crimping. This analysis can ensure that the terminal is crimped in the correct position, thereby ensuring the connection quality and reliability of the wiring harness. Next, by monitoring the terminal direction of the spatial topological structure of the wiring harness of new energy vehicles to monitor the crimping direction of the terminal, it can ensure that the direction of the terminal is correct during the crimping process, avoiding the occurrence of wrong connection and wiring problems, thereby ensuring the normal operation and reliability of the automotive wiring harness. Finally, by performing three-dimensional modeling of the wiring harness of the spatial topological structure of the wiring harness of new energy vehicles based on the crimping position and crimping direction of the terminal of the wiring harness of new energy vehicles, a three-dimensional spatial model of the automotive wiring harness can be established, which can intuitively present the three-dimensional virtual space layout of the automotive wiring harness, providing an important reference for the subsequent processing process. This three-dimensional modeling process can help better understand the structure and layout characteristics of the terminals of the automotive wiring harness during the crimping process, thereby providing data support for the subsequent optimization of the terminal crimping scheme and improving the efficiency and quality of terminal crimping.

[0050] Preferably, step S15 comprises the following steps:

[0051] Step S151: performing feature corner point detection processing on the crimping position of the wiring harness terminal of the new energy vehicle and the crimping direction of the wiring harness terminal of the new energy vehicle to obtain a feature corner point set of the crimping position of the wiring harness terminal and a feature corner point set of the crimping direction of the wiring harness terminal;

[0052] Step S152: performing point cloud downsampling processing on the characteristic corner point set of the crimping position of the harness terminal and the characteristic corner point set of the crimping direction of the harness terminal to obtain a point cloud set of the crimping position of the harness terminal and a point cloud set of the crimping direction of the harness terminal;

[0053] Step S153: performing terminal connection point identification analysis on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the terminal spatial connection points of the wiring harness of the new energy vehicle;

[0054] Step S154: performing connection relationship mining and analysis on each automobile wiring harness terminal in the new energy automobile wiring harness space topology structure based on the new energy automobile wiring harness terminal space connection point, so as to obtain the crimping space connection relationship between each automobile wiring harness terminal;

[0055] Step S155: Based on the crimping spatial connection relationship between each automobile wiring harness terminal and in combination with the wiring harness terminal crimping position point cloud set and the wiring harness terminal crimping direction point cloud set, the wiring harness spatial topological structure of the new energy vehicle is subjected to wiring harness three-dimensional modeling processing to generate a new energy vehicle wiring harness three-dimensional spatial model.

[0056] As an embodiment of the present invention, refer to Figure 3 As shown, Figure 2 Detailed step flow diagram of step S15 in FIG. 1 , in this embodiment, step S15 includes the following steps:

[0057] Step S151: performing feature corner point detection processing on the crimping position of the wiring harness terminal of the new energy vehicle and the crimping direction of the wiring harness terminal of the new energy vehicle to obtain a feature corner point set of the crimping position of the wiring harness terminal and a feature corner point set of the crimping direction of the wiring harness terminal;

[0058] The embodiment of the present invention uses a corner point detection algorithm to detect and identify corner points of the analyzed crimping position and crimping direction of the wire harness terminals of new energy vehicles, so as to accurately sample the characteristic corner points of the crimping position and crimping direction of the wire harness terminals of new energy vehicles during the crimping process, and make them represent the crimping position and crimping direction of the wire harness terminals with more obvious characteristics, and finally obtain the characteristic corner point set of the crimping position of the wire harness terminals and the characteristic corner point set of the crimping direction of the wire harness terminals.

[0059] Step S152: performing point cloud downsampling processing on the characteristic corner point set of the crimping position of the harness terminal and the characteristic corner point set of the crimping direction of the harness terminal to obtain a point cloud set of the crimping position of the harness terminal and a point cloud set of the crimping direction of the harness terminal;

[0060] The embodiment of the present invention selects appropriate point cloud downsampling algorithms and parameters (such as voxel grid downsampling, statistical filtering downsampling, etc.) to downsample the detected characteristic corner point set of the wire harness terminal crimping position and the characteristic corner point set of the wire harness terminal crimping direction, respectively, so as to retain the main features of the corner point data while reducing the number of corner point point clouds and the complexity of the corner point data, and finally obtain the wire harness terminal crimping position point cloud set and the wire harness terminal crimping direction point cloud set.

[0061] Step S153: performing terminal connection point identification analysis on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the terminal spatial connection points of the wiring harness of the new energy vehicle;

[0062] The embodiment of the present invention uses tools and methods such as three-dimensional scanning technology and computer-aided design software to identify and analyze the physical connection relationship, spatial position relationship, etc. between the wiring harness terminals in the spatial topological structure of the wiring harness of new energy vehicles, and identifies the connection points between the various terminals. These connection points are the key nodes of the wiring harness spatial topological structure, and finally obtain the spatial connection points of the wiring harness terminals of the new energy vehicle.

[0063] Step S154: performing connection relationship mining and analysis on each automobile wiring harness terminal in the new energy automobile wiring harness space topology structure based on the new energy automobile wiring harness terminal space connection point, so as to obtain the crimping space connection relationship between each automobile wiring harness terminal;

[0064] The embodiment of the present invention uses data mining and statistical analysis methods to mine and analyze the connection relationship between each automobile wiring harness terminal in the spatial topological structure of the new energy vehicle wiring harness by combining the spatial connection points of the new energy vehicle wiring harness terminals obtained by analysis, so as to analyze the position, direction and other relevant characteristics between the connection points to reveal the connection mode and law between each automobile wiring harness terminal, and finally obtain the crimping spatial connection relationship between each automobile wiring harness terminal.

[0065] Step S155: Based on the crimping spatial connection relationship between each automobile wiring harness terminal and in combination with the wiring harness terminal crimping position point cloud set and the wiring harness terminal crimping direction point cloud set, the wiring harness spatial topological structure of the new energy vehicle is subjected to wiring harness three-dimensional modeling processing to generate a new energy vehicle wiring harness three-dimensional spatial model.

[0066] The embodiment of the present invention mines and analyzes the crimping spatial connection relationship between each automobile wiring harness terminal and combines the wiring harness terminal crimping position point cloud set and the wiring harness terminal crimping direction point cloud set to use three-dimensional modeling software to model the spatial topological structure of the new energy vehicle wiring harness, so as to convert the terminal connection relationship into a three-dimensional space model, and refine the model in combination with the point cloud data, while making it intuitively display the structure and layout characteristics of the automobile wiring harness during the crimping process, and finally generate a three-dimensional space model of the new energy vehicle wiring harness.

[0067] The present invention firstly performs characteristic corner point detection processing on the crimping position and crimping direction of the wiring harness terminals of new energy vehicles, and can accurately sample the characteristic corner point conditions of the crimping position and crimping direction of the wiring harness terminals of new energy vehicles during the crimping process. This helps to provide basic data guarantee for the subsequent three-dimensional modeling process, thereby improving the reliability and durability of the automobile wiring harness. The acquisition of the characteristic corner point set enables the subsequent steps to process the automobile wiring harness more accurately, thereby providing an accurate basis for the subsequent point cloud processing. Secondly, by performing point cloud downsampling processing on the characteristic corner point set of the crimping position of the wiring harness terminal and the characteristic corner point set of the crimping direction of the wiring harness terminal, the complexity of the corner point data can be reduced, the efficiency of the three-dimensional space modeling processing can be improved, and sufficient point cloud information can be retained to ensure the accuracy of the subsequent steps. The acquisition of the point cloud set of the crimping position of the wiring harness terminal and the point cloud set of the crimping direction of the wiring harness terminal in this step can provide the necessary data support for the subsequent steps, thereby providing an important basis for three-dimensional modeling. Then, by identifying and analyzing the terminal connection points of the spatial topological structure of the wiring harness of new energy vehicles, the crimping connection points between the terminals of the wiring harness of new energy vehicles in the actual crimping process can be determined, so as to effectively organize and manage the connection relationship between the wiring harness terminals during the crimping process of the automobile wiring harness, which helps to improve the assembly efficiency and quality of the automobile wiring harness and ensure the stability and reliability of the wiring harness connection. Next, by mining and analyzing the connection relationship of each automobile wiring harness terminal in the spatial topological structure of the wiring harness of new energy vehicles based on the spatial connection points of the wiring harness terminals of new energy vehicles, the correlation and connection mode between each connection point are analyzed, so as to obtain the crimping space connection relationship between each terminal. This analysis helps to understand the connection mode between each terminal inside the wiring harness, and provides an important reference for the subsequent three-dimensional modeling processing. Finally, the wiring harness 3D modeling is performed on the spatial topological structure of the new energy vehicle wiring harness based on the connection relationship of the crimping space and combined with the point cloud set of the crimping position and direction of the wiring harness terminal. In this way, the connection relationship and point cloud data can be integrated to generate an accurate 3D spatial model of the new energy vehicle wiring harness. This model can intuitively display the structure and layout characteristics of the automotive wiring harness during the crimping process, thereby providing data support for the subsequent optimization of the terminal crimping scheme and improving the terminal crimping efficiency and quality.

[0068] Preferably, step S154 includes the following steps:

[0069] Based on the spatial connection points of the new energy vehicle wiring harness terminals, the spatial topological structure of the new energy vehicle wiring harness is spatially mapped and marked to obtain the spatial connection mapping marking points of the vehicle wiring harness terminals;

[0070] The embodiment of the present invention uses a spatial mapping method to map the analyzed new energy vehicle wiring harness terminal space connection points to specific locations within the new energy vehicle wiring harness space topology structure, and effectively marks them, and finally obtains the vehicle wiring harness terminal space connection mapping mark points.

[0071] Preferably, based on the space connection mapping mark points of the automobile wiring harness terminals, connection mode mining and analysis is performed between each automobile wiring harness terminal in the space topology structure of the new energy automobile wiring harness to obtain the crimping space connection mode data between each automobile wiring harness terminal;

[0072] The embodiment of the present invention mines and analyzes the connection patterns between the corresponding automobile wiring harness terminals in the new energy vehicle wiring harness space topological structure by combining the automobile wiring harness terminal space connection mapping mark points obtained by mapping marks, so as to analyze and mine the connection methods and patterns between each automobile wiring harness terminal, such as crimping, plugging, fixing, etc., and finally obtain the crimping space connection pattern data between each automobile wiring harness terminal.

[0073] Preferably, the spatial connection strength between each automobile wiring harness terminal in the spatial topological structure of the new energy automobile wiring harness is calculated to obtain the crimping spatial connection strength between each automobile wiring harness terminal;

[0074] The embodiment of the present invention combines relevant knowledge such as engineering mechanics and material mechanics to perform statistical calculations on the spatial connection strength between each automobile wiring harness terminal within the spatial topological structure of the new energy vehicle wiring harness, so as to quantitatively calculate the degree of spatial connection between each automobile wiring harness terminal, and finally obtain the crimping spatial connection strength between each automobile wiring harness terminal.

[0075] Preferably, according to the crimping space connection strength between each automobile wiring harness terminal, the spatial connection implicit rule mining and analysis between each automobile wiring harness terminal in the new energy automobile wiring harness space topological structure is performed to obtain the crimping space connection implicit rule data between each automobile wiring harness terminal;

[0076] The embodiment of the present invention uses data analysis and implicit law statistical methods to mine and analyze the corresponding automobile wiring harness terminals in the wiring harness space topological structure of new energy vehicles by combining the crimping space connection strength between each automobile wiring harness terminal obtained by analysis, so as to mine and analyze the correlation and regularity between the connection strength and other factors, including factors such as wiring harness structure design, material selection, and connection method, and deeply understand the implicit connection characteristics and patterns between each automobile wiring harness terminal, and finally obtain the implicit law data of the crimping space connection between each automobile wiring harness terminal.

[0077] Preferably, based on the crimping space connection mode data and the crimping space connection implicit rule data between each automobile wiring harness terminal, the connection relationship between each automobile wiring harness terminal in the new energy vehicle wiring harness space topological structure is identified and analyzed to obtain the crimping space connection relationship between each automobile wiring harness terminal.

[0078] The embodiment of the present invention uses a data mining method to identify and analyze the connection relationship between the corresponding automobile wiring harness terminals in the new energy vehicle wiring harness space topological structure by combining the crimping space connection mode data and the crimping space connection implicit rule data obtained by analysis, so as to comprehensively consider the connection mode, connection strength and other related factors to identify the connection relationship between the automobile wiring harness terminals, such as main connection, auxiliary connection, importance ranking, etc., and finally obtain the crimping space connection relationship between the automobile wiring harness terminals.

[0079] The present invention first performs spatial mapping and marking processing on the spatial topological structure of the wiring harness of new energy vehicles based on the spatial connection points of the wiring harness terminals of new energy vehicles, thereby obtaining the spatial connection mapping marking points of the wiring harness terminals of vehicles. The key to this step is to effectively mark the spatial topological structure of the wiring harness of new energy vehicles by using the spatial mapping marking processing method, thereby providing a basis for subsequent connection mode mining and spatial connection analysis. Secondly, by mining and analyzing the connection mode between each automobile wiring harness terminal in the spatial topological structure of the wiring harness of new energy vehicles based on the spatial connection mapping marking points of the wiring harness terminals of vehicles, the key to this step is to reveal the connection mode between the wiring harness terminals by mining the connection mode, thereby providing data support for the subsequent connection strength calculation and connection relationship identification. Then, by calculating the spatial connection strength between each automobile wiring harness terminal in the spatial topological structure of the wiring harness of new energy vehicles, this step can quantify the degree of connection between each automobile wiring harness terminal by calculating the spatial connection strength, thereby providing a reliable basis for subsequent connection relationship mining and analysis. Next, the implicit rules of spatial connection between each automobile wiring harness terminal in the spatial topological structure of the new energy vehicle wiring harness are mined and analyzed according to the crimping space connection strength between each automobile wiring harness terminal. The key to this step is to be able to deeply understand the connection characteristics and patterns between each automobile wiring harness terminal by mining the implicit rules of connection, thereby providing a deeper understanding for the subsequent connection relationship identification and analysis. Finally, the connection relationship between each automobile wiring harness terminal in the spatial topological structure of the new energy vehicle wiring harness is identified and analyzed based on the crimping space connection pattern data between each automobile wiring harness terminal and the crimping space connection implicit rule data. The key to this step is to be able to combine the connection mode and implicit rule to identify the specific connection relationship between each automobile wiring harness terminal, which provides an important reference for design optimization and quality control, thereby improving the reliability and performance of the new energy vehicle wiring harness.

[0080] Preferably, step S155 includes the following steps:

[0081] Based on the crimping spatial connection relationship between each automobile wiring harness terminal, the wiring harness spatial connection relationship of the new energy vehicle wiring harness spatial topological structure is three-dimensionally modeled to obtain the three-dimensional spatial model of the wiring harness connection relationship of the new energy vehicle;

[0082] The embodiment of the present invention uses three-dimensional modeling software to perform spatial connection modeling on the spatial topological structure of the wiring harness of a new energy vehicle by combining the crimping spatial connection relationship between each automobile wiring harness terminal obtained by analysis, so as to determine the connection method, layout relationship and spatial position relationship between each terminal to establish a spatial connection relationship model of the wiring harness, and accurately describe the spatial layout and connection method between the automobile wiring harness terminals, and finally obtain a three-dimensional spatial model of the connection relationship of the wiring harness of a new energy vehicle.

[0083] Preferably, the three-dimensional space model of the connection relationship of the wiring harness of the new energy vehicle is processed by position point cloud registration based on the point cloud set of the crimping position of the wiring harness terminal to obtain the three-dimensional space model of the position registration of the wiring harness terminal of the new energy vehicle;

[0084] The embodiment of the present invention uses a position alignment algorithm to align the corresponding positions in the three-dimensional space model of the new energy vehicle wiring harness connection relationship by combining the wire harness terminal crimping position point cloud set obtained by analysis, so as to match and adjust the terminal position points in the point cloud data with the corresponding positions in the model, and ensure that the model is consistent with the actual situation, and finally obtain a three-dimensional space model of the new energy vehicle wiring harness terminal position alignment.

[0085] Preferably, the crimping direction fitting optimization is performed on the three-dimensional space model of the position registration of the wiring harness terminal of the new energy vehicle based on the point cloud set of the crimping direction of the wiring harness terminal, so as to obtain the three-dimensional space model of the direction fitting of the wiring harness terminal of the new energy vehicle;

[0086] The embodiment of the present invention uses a direction fitting algorithm to fit and optimize the corresponding terminal crimping direction in the three-dimensional space model of the wiring harness terminal position registration of the new energy vehicle by combining the point cloud set of the wiring harness terminal crimping direction obtained by analysis, so as to find the best fitting result of the terminal crimping direction, and update the corresponding terminal direction in the three-dimensional space model of the wiring harness terminal position registration of the new energy vehicle with the fitted optimized direction, ensuring that the terminal direction in the model is consistent with the actual one, and finally obtaining the three-dimensional space model of the wiring harness terminal direction fitting of the new energy vehicle.

[0087] Preferably, the three-dimensional space model of the wiring harness terminal direction of the new energy vehicle is voxelized to obtain the three-dimensional space voxelized model of the wiring harness of the new energy vehicle;

[0088] The embodiment of the present invention voxelizes the fitted three-dimensional space model of the terminal direction of the new energy vehicle wiring harness by setting the parameters of the voxelization processing (including the size and resolution of the voxels), so as to convert the complex wiring harness structure into a discrete representation that is easy to process and analyze, and finally obtain a three-dimensional space voxelized model of the new energy vehicle wiring harness.

[0089] Preferably, the three-dimensional space voxelized model of the new energy vehicle wiring harness is subjected to surface smoothing processing to generate the three-dimensional space model of the new energy vehicle wiring harness.

[0090] The embodiment of the present invention uses a surface smoothing algorithm to smooth the three-dimensional voxelized model of the new energy vehicle wiring harness obtained after voxelization, so as to eliminate the roughness and discontinuity caused by the voxelization process, and make the model surface smoother and more continuous, and finally generate a three-dimensional model of the new energy vehicle wiring harness.

[0091] The present invention firstly performs a three-dimensional modeling of the wiring harness space connection relationship of the new energy vehicle wiring harness space topological structure based on the crimping space connection relationship between each automobile wiring harness terminal. This modeling method fully considers the physical connection relationship of the automobile wiring harness terminal during the crimping process, and can accurately describe the spatial layout and connection mode between the automobile wiring harness terminals. Through this step, an accurate three-dimensional spatial model of the connection relationship of the new energy vehicle wiring harness can be obtained, thereby providing a basis for subsequent position alignment and direction fitting optimization. Secondly, by performing position point cloud alignment processing on the three-dimensional spatial model of the connection relationship of the new energy vehicle wiring harness based on the crimping position point cloud set of the wiring harness terminal, the position point cloud data previously obtained by statistics can be aligned with the position relationship between the wiring harness terminals in the three-dimensional spatial model, thereby obtaining a highly accurate three-dimensional spatial model of the position alignment of the new energy vehicle wiring harness terminal, which will provide an accurate basis for the next step of crimping direction fitting optimization. Then, by performing crimping direction fitting optimization on the three-dimensional spatial model of the position alignment of the new energy vehicle wiring harness terminal based on the crimping direction point cloud set of the wiring harness terminal, this step is intended to make the connection direction of the wiring harness terminal in the three-dimensional virtual space more accurate and stable, so as to ensure the reliability and safety of the automobile wiring harness. By optimizing the terminal direction, a three-dimensional space model that accurately describes the connection direction of the wiring harness terminal can be obtained, thus laying the foundation for the subsequent voxelization processing. Next, by voxelizing the three-dimensional space model of the terminal direction of the new energy vehicle wiring harness, the complex wiring harness structure can be converted into a discrete representation that is easy to process and analyze. At the same time, the complexity of the model can be greatly simplified, making it easier for subsequent finite element division processing and analysis. Through this step, a three-dimensional space voxelized model of the wiring harness of a new energy vehicle can be obtained, thus preparing for the final surface smoothing. Finally, by performing surface smoothing on the three-dimensional space voxelized model of the wiring harness of a new energy vehicle, the surface smoothing process is to optimize the voxel model through a series of algorithms and technologies to eliminate the surface roughness and discontinuity introduced by the voxelization process, so that the surface of the wiring harness becomes smooth and continuous. Through this step, an accurate, fine and smooth-looking three-dimensional space model of the wiring harness of a new energy vehicle can be generated, thereby providing a reliable spatial reference for the subsequent processing process.

[0092] Preferably, step S2 comprises the following steps:

[0093] Step S21: performing finite element partitioning processing on the three-dimensional spatial model of the wiring harness of the new energy vehicle to obtain a finite element spatial model of the wiring harness of the new energy vehicle;

[0094] The embodiment of the present invention analyzes the design information parameters in the three-dimensional space model of the new energy vehicle wiring harness, including parameters such as geometric shape, material properties, and connection methods, and divides the three-dimensional space model of the new energy vehicle wiring harness into many small finite units, such as tetrahedron or hexahedron elements, by using finite element analysis software, so as to discretize the three-dimensional space model of the new energy vehicle wiring harness into a finite element model, and finally obtain the finite element space model of the new energy vehicle wiring harness.

[0095] Step S22: setting the crimping simulation boundary conditions for the finite element space model of the new energy vehicle wiring harness based on the crimping process of the new energy vehicle wiring harness terminal, so as to obtain the displacement boundary conditions of the crimping simulation of the automobile wiring harness terminal and the force applied boundary conditions of the crimping simulation of the automobile wiring harness terminal;

[0096] The embodiment of the present invention sets the displacement boundary conditions of the terminals in the finite element space model of the new energy vehicle wiring harness obtained by dividing according to the expected displacement of the terminals of the automobile wiring harness during the crimping process of the new energy vehicle wiring harness terminals, so as to ensure that the simulation can accurately simulate the displacement behavior during the crimping process, thereby obtaining the displacement boundary conditions of the automobile wiring harness terminal crimping simulation. At the same time, by setting the external force boundary conditions of the terminals in the finite element space model of the new energy vehicle wiring harness according to the magnitude and direction of the force applied during the crimping process of the new energy vehicle wiring harness terminals, the force applied by the crimping tool on the terminals is simulated, and finally the force applied boundary conditions of the automobile wiring harness terminal crimping simulation are obtained.

[0097] Step S23: performing terminal deformation parameter analysis on the finite element space model of the new energy vehicle wiring harness based on the automobile wiring harness terminal crimping simulation displacement boundary condition to obtain the automobile wiring harness terminal crimping deformation parameter;

[0098] In the embodiment of the present invention, simulation software is used to set the crimping simulation conditions of the automobile wiring harness terminals in the finite element space model of the new energy vehicle wiring harness during the crimping process, including the geometric shape of the crimping tool, material parameters, applied pressure and crimping temperature, etc., and the automobile wiring harness terminal crimping simulation displacement boundary conditions are imported into the simulation software for operation to simulate the deformation behavior of the automobile wiring harness terminals during the crimping process, and the deformation coupling effect of the terminals during the crimping process is evaluated and analyzed. At the same time, the deformation coupling effect obtained by the combined analysis is applied to the simulation software to perform crimping simulation analysis on the corresponding automobile wiring harness terminals in the finite element space model of the new energy vehicle wiring harness, so as to simulate the deformation change of the terminal during the crimping process, including local strain distribution and overall shape change, and quantify and calculate various deformation parameters of the automobile wiring harness terminals during the crimping process according to the deformation change obtained by the analysis, such as the twisting, stretching, compression and other parameters of the automobile wiring harness terminals during the crimping process, so as to explore the law and characteristics of the deformation of the automobile wiring harness terminals, and finally obtain the crimping deformation parameters of the automobile wiring harness terminals.

[0099] Step S24: Based on the force boundary condition applied by the crimping simulation of the automobile wiring harness terminal, the elastic limit modulus of the automobile wiring harness terminal in the finite element space model of the new energy automobile wiring harness is monitored to obtain the elastic limit modulus of the new energy automobile wiring harness terminal;

[0100] The embodiment of the present invention applies a pre-set automobile wiring harness terminal crimping simulation force boundary condition to the corresponding automobile wiring harness terminal in the finite element space model of the new energy vehicle wiring harness to simulate the deformation behavior of the automobile wiring harness terminal during the crimping process, and draws the stress-strain curve of the automobile wiring harness terminal according to the simulated deformation behavior, and calculates the elastic limit modulus of the automobile wiring harness terminal by the slope, so as to reflect the elastic characteristics of the wiring harness terminal under the force limit condition, and finally obtains the elastic limit modulus of the new energy vehicle wiring harness terminal.

[0101] Step S25: Based on the crimping process of the new energy vehicle wiring harness terminals, statistical calculation of the stress distribution between the vehicle wiring harness terminals in the finite element space model of the new energy vehicle wiring harness is performed to obtain the crimping stress distribution parameters between the vehicle wiring harness terminals; according to the elastic limit modulus of the vehicle wiring harness terminals, a contact pressure refinement distribution analysis is performed on the crimping stress distribution parameters between the vehicle wiring harness terminals to obtain the crimping contact pressure distribution parameters of the vehicle wiring harness terminals.

[0102] The embodiment of the present invention statistically calculates the actual stress distribution parameters between the corresponding automobile wiring harness terminals in the finite element space model of the new energy automobile wiring harness by combining the crimping process of the new energy automobile wiring harness terminals, so as to statistically calculate the crimping stress distribution between the actual automobile wiring harness terminals, including parameters such as maximum stress and average stress, thereby obtaining the crimping stress distribution parameters between the automobile wiring harness terminals. At the same time, the crimping stress distribution parameters between the automobile wiring harness terminals obtained by quantitative calculation are refined by combining the elastic limit modulus of the automobile wiring harness terminals obtained by analysis, so as to analyze and explore the pressure contact conditions and pressure distribution parameters between the terminals, including the pressure distribution position, direction and size, and finally obtain the crimping contact pressure distribution parameters of the automobile wiring harness terminals.

[0103] The present invention firstly discretizes the three-dimensional space model of the wiring harness of new energy vehicles into a finite element grid by performing finite element division processing on the three-dimensional space model of the wiring harness of new energy vehicles, thereby obtaining a finite element space model of the wiring harness of new energy vehicles. This model can better simulate the structure and physical behavior of the wiring harness, and provides a basis for subsequent simulation and analysis. At the same time, by setting the crimping simulation boundary conditions of the finite element space model of the wiring harness of new energy vehicles based on the crimping process of the wiring harness terminals of new energy vehicles, the displacement boundary conditions and the force boundary conditions required in the simulation analysis are determined. The setting of these boundary conditions will ensure the authenticity and accuracy of the simulation during the simulation process, thereby providing necessary limiting conditions for the subsequent simulation parameter analysis. Secondly, by analyzing the terminal deformation parameters of the finite element space model of the wiring harness of new energy vehicles based on the displacement boundary conditions of the crimping simulation of the wiring harness terminals of automobiles, the deformation parameters of the wiring harness terminals during the crimping process can be obtained. These parameters can reveal the deformation of the wiring harness terminals during the crimping process, which is helpful to evaluate the influence of the crimping process on the wiring harness terminals, and provide a reference for the optimization design. Then, by applying force boundary conditions based on the crimping simulation of the automobile harness terminal, the elastic limit modulus of the automobile harness terminal in the finite element space model of the new energy vehicle harness can be monitored, and the elastic limit modulus of the harness terminal can be monitored. This parameter reflects the elastic characteristics of the harness terminal under the force limit, which is of great significance for evaluating the strength and stability of the harness. Next, by performing statistical calculations on the stress distribution between the automobile harness terminals in the finite element space model of the new energy vehicle harness based on the crimping process of the new energy vehicle harness terminal, the crimping stress distribution parameters between the harness terminals can be obtained. These parameters reflect the force conditions between the harness terminals and can help evaluate the stability and safety of the harness connection. Finally, by performing contact pressure refinement distribution analysis on the crimping stress distribution parameters between the automobile harness terminals according to the elastic limit modulus of the automobile harness terminal, the contact pressure distribution parameters of the harness terminal crimping can be obtained. These parameters can more accurately describe the contact conditions between the harness terminals, thereby providing an important reference for the subsequent crimping quality evaluation and analysis process.

[0104] Preferably, step S23 includes the following steps:

[0105] Step S231: performing finite element mesh refinement on the finite element space model of the wiring harness of the new energy vehicle to obtain a finite element mesh space model of the wiring harness of the vehicle;

[0106] The embodiment of the present invention uses finite element analysis software to refine the mesh of the finite element spatial model of the new energy vehicle wiring harness, so as to divide the finite element geometric shape of the wiring harness into many smaller grid units, and describe the geometric shape and material properties of the wiring harness in a more refined manner, and finally obtain the finite element meshed spatial model of the automobile wiring harness.

[0107] Step S232: performing a crimping deformation coupling analysis on the automobile wiring harness terminal in the finite element meshed space model of the automobile wiring harness based on the automobile wiring harness terminal crimping simulation displacement boundary condition to obtain the automobile wiring harness terminal crimping deformation coupling effect data;

[0108] The embodiment of the present invention uses simulation software to set the crimping simulation conditions of the automobile wiring harness terminals in the finite element mesh space model of the automobile wiring harness during the crimping process, including the geometry of the crimping tool, material parameters, applied pressure and crimping temperature, etc., and imports the automobile wiring harness terminal crimping simulation displacement boundary conditions into the simulation software for operation to simulate the deformation behavior of the automobile wiring harness terminals during the crimping process, and records the morphological changes of the automobile wiring harness terminals at different times, including the deformation amount and stress distribution of the terminals, and simultaneously analyzes the corresponding structural deformation field and temperature change field to evaluate and analyze the deformation coupling effect of the terminals during the crimping process, and finally obtains the automobile wiring harness terminal crimping deformation coupling effect data.

[0109] Step S233: performing a crimping deformation field analysis on the automobile wiring harness terminal in the automobile wiring harness finite element mesh space model according to the automobile wiring harness terminal crimping deformation coupling effect data to obtain a deformation change field of the automobile wiring harness terminal crimping process;

[0110] The embodiment of the present invention applies the automobile wiring harness terminal crimping deformation coupling effect data obtained by combining the analysis to the simulation software to perform crimping simulation analysis on the corresponding automobile wiring harness terminals in the automobile wiring harness finite element mesh space model, so as to simulate the deformation change of the terminal during the crimping process, including local strain distribution and overall shape change, and sets its deformation process as a deformation field to understand the specific deformation behavior of the automobile wiring harness terminal during the crimping process, and finally obtains the deformation change field of the automobile wiring harness terminal crimping process.

[0111] Step S234: performing terminal deformation parameter analysis on the deformation change field of the automobile wiring harness terminal crimping process to obtain the automobile wiring harness terminal crimping deformation parameters.

[0112] The embodiment of the present invention extracts the deformation amount of the automobile wiring harness terminal from the deformation change field of the automobile wiring harness terminal crimping process, and quantitatively calculates various deformation parameters of the automobile wiring harness terminal during the crimping process based on the extracted deformation amount, such as the twisting, stretching, compression and other parameters of the automobile wiring harness terminal during the crimping process, so as to explore the deformation law and characteristics of the automobile wiring harness terminal, and finally obtain the crimping deformation parameters of the automobile wiring harness terminal.

[0113] The present invention first refines the finite element mesh of the finite element space model of the new energy vehicle wiring harness, and can divide the model into smaller mesh units, so as to describe the geometric shape and material properties of the wiring harness in a more refined way. This process helps to accurately capture the mechanical response and deformation of the wiring harness under different conditions, thereby providing a basis for subsequent deformation parameter analysis. Secondly, by performing a crimping deformation coupling analysis on the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness based on the displacement boundary condition of the automobile wiring harness terminal crimping simulation, the deformation of the wiring harness terminal during the crimping process can be analyzed, and the deformation coupling effect data is obtained, which helps to understand the deformation characteristics of the terminal during the crimping process and provides a reference for the subsequent deformation field analysis process. Then, by performing a crimping deformation field analysis on the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness according to the crimping deformation coupling effect data of the automobile wiring harness terminal, through this analysis, the deformation change of the terminal during the crimping process can be further understood, including the local strain distribution and the overall shape change, which provides a basis for verifying the accuracy of the simulation model and proposing improvement suggestions. Finally, the deformation parameters of the terminals are analyzed by analyzing the deformation change field of the automotive wiring harness terminals during the crimping process. This step aims to identify and quantify the various deformation parameters of the terminals during the crimping process, such as twisting, stretching, compression and other parameters of the terminals during the crimping process, so as to fully understand the deformation characteristics of the terminals, thereby providing data support for the subsequent crimping quality evaluation and analysis process.

[0114] Preferably, step S232 includes the following steps:

[0115] Perform structural mechanics field analysis on the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness to obtain the structural mechanics field of the automobile wiring harness terminal;

[0116] The embodiment of the present invention applies appropriate crimping boundary conditions and load conditions to the automobile wiring harness terminals in the finite element meshed space model of the automobile wiring harness by using finite element analysis software to simulate the stress conditions of the automobile wiring harness terminals under actual working conditions, and understand the mechanical behavior of the automobile wiring harness terminals under different working conditions, including the stress conditions, stress distribution, deformation characteristics, etc. of the terminals, thereby constructing a structural mechanics field strength and finally obtaining the structural mechanics field of the automobile wiring harness terminals.

[0117] Preferably, a structural deformation analysis is performed on the structural mechanical field of the automobile wiring harness terminal based on the displacement boundary condition of the automobile wiring harness terminal crimping simulation to obtain the structural deformation behavior field of the automobile wiring harness terminal;

[0118] The embodiment of the present invention applies the automobile wiring harness terminal crimping simulation displacement boundary condition to the analyzed automobile wiring harness terminal structural mechanical field to simulate the displacement and deformation of the automobile wiring harness terminal during the crimping process to study the structural deformation behavior of the automobile wiring harness terminal during the crimping process, including the twisting, bending, stretching, etc. of the terminal, and finally obtains the automobile wiring harness terminal structural deformation behavior field.

[0119] Preferably, a temperature field variation analysis is performed on the automobile wiring harness terminal in the automobile wiring harness finite element meshed space model to obtain a crimping temperature variation field of the automobile wiring harness terminal;

[0120] The embodiment of the present invention uses a numerical crimping simulation analysis method to analyze the temperature changes (including friction heat generated by the crimping tool, resistance heating, and ambient temperature, etc.) to which the automobile wiring harness terminals are subjected during the crimping process in a finite element mesh space model of the automobile wiring harness, so as to finally obtain the crimping temperature change field of the automobile wiring harness terminals.

[0121] Preferably, an impact assessment analysis is performed on the structural deformation behavior field of the automobile wiring harness terminal based on the temperature change field of the automobile wiring harness terminal crimping to obtain a deformation influence factor between the temperature change of the automobile wiring harness terminal crimping and the structural deformation;

[0122] The embodiment of the present invention uses an impact assessment algorithm to evaluate and analyze the automobile wiring harness terminal structural deformation behavior field by combining the analyzed automobile wiring harness terminal crimping temperature change field, so as to evaluate and analyze the influence of temperature change on the terminal structure deformation, and to dig out the influencing factors between temperature change and structural deformation, and finally obtain the deformation influencing factor between the automobile wiring harness terminal crimping temperature change and structural deformation.

[0123] Preferably, based on the deformation influencing factor between the crimping temperature change and the structural deformation of the automobile wiring harness terminal, the automobile wiring harness terminal in the finite element meshed space model of the automobile wiring harness is subjected to the crimping deformation coupling analysis to obtain the automobile wiring harness terminal crimping deformation coupling effect data.

[0124] The embodiment of the present invention performs coupling analysis on the corresponding automobile wiring harness terminals in the finite element mesh space model of the automobile wiring harness by combining the deformation influencing factors between the crimping temperature change and the structural deformation of the automobile wiring harness terminals obtained by analysis, so as to comprehensively consider the influence of temperature change and structural deformation on the terminal crimping deformation process to analyze how the temperature change during the crimping process affects the structural deformation of the automobile wiring harness terminals, thereby fully understanding the deformation behavior of the terminals during the crimping process, and finally obtaining the automobile wiring harness terminal crimping deformation coupling effect data.

[0125] The present invention firstly analyzes the structural mechanics field of the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness, which includes the research on the force condition, stress distribution, deformation characteristics and other aspects of the terminal. Through this step, the mechanical behavior of the terminal under different working conditions can be fully understood, thereby providing basic data and reference basis for the subsequent processing process. Secondly, the structural deformation analysis of the structural mechanics field of the automobile wiring harness terminal is performed based on the simulation displacement boundary condition of the automobile wiring harness terminal crimping. The purpose of this step is to study the deformation behavior of the terminal during the crimping process, including the twisting, bending, stretching and other conditions of the terminal. By combining the simulation displacement boundary condition, the deformation of the terminal during the actual crimping process can be more accurately simulated, providing more accurate input data for the subsequent processing process. Then, the temperature field change analysis of the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness is performed, which includes the temperature change of the terminal during the crimping process, such as heat conduction, thermal expansion and other influencing factors. Through this analysis, the deformation of the terminal under different temperature conditions can be understood, thereby providing important input parameters of the temperature field for the subsequent impact assessment analysis. Next, the impact assessment analysis of the structural deformation behavior field of the automotive wiring harness terminal is conducted based on the temperature change field of the automotive wiring harness terminal crimping. This step aims to study the characteristics and laws of the structural deformation behavior of the terminal when it is affected by temperature changes. By evaluating the impact of temperature changes on structural deformation, the deformation influence factor between temperature changes and structural deformation can be determined, which provides an important reference for understanding the comprehensive impact of the crimping process. Finally, the crimping deformation coupling analysis of the automotive wiring harness terminal in the finite element mesh space model of the automotive wiring harness is conducted based on the deformation influence factor between the crimping temperature change and structural deformation of the automotive wiring harness terminal. The purpose of this step is to comprehensively consider the impact of temperature changes and structural deformation on the terminal crimping deformation process, to analyze and obtain more accurate deformation coupling effect data, so that the deformation behavior of the terminal during the crimping process can be fully understood, providing a scientific basis for the subsequent processing process.

[0126] Preferably, step S3 comprises the following steps:

[0127] Step S31: evaluating and analyzing the deformation degree of the crimping process of the new energy vehicle wiring harness terminal according to the crimping deformation parameters of the automobile wiring harness terminal to obtain a crimping deformation degree index of the automobile wiring harness terminal;

[0128] The embodiment of the present invention uses a deformation degree evaluation algorithm to evaluate and analyze the corresponding new energy vehicle wiring harness terminal crimping process by combining the analyzed automobile wiring harness terminal crimping deformation parameters (including twisting, stretching, compression and other parameters), so as to evaluate and analyze the deformation degree of the automobile wiring harness terminal during the crimping process, including bending, twisting, stretching and other deformation degrees, and finally obtain the automobile wiring harness terminal crimping deformation degree index.

[0129] Step S32: performing pressure distribution area statistical analysis on the pressure distribution parameters of the automobile wiring harness terminal crimping contact pressure to obtain the pressure distribution area of ​​the automobile wiring harness terminal crimping contact pressure;

[0130] The embodiment of the present invention uses a distribution area statistical analysis method to perform statistical calculations on each pressure distribution position in the analyzed automotive wiring harness terminal crimping contact pressure distribution parameters, so as to calculate the contact distribution area at each pressure distribution position to which the automotive wiring harness terminal is subjected during the crimping process, and add up the contact distribution areas at each pressure distribution position, and finally obtain the automotive wiring harness terminal crimping contact pressure distribution area.

[0131] Step S33: monitoring and analyzing the crimping contact area of ​​the automobile wiring harness terminal during the crimping process of the automobile wiring harness terminal, and obtaining the crimping contact area of ​​the automobile wiring harness terminal;

[0132] The embodiment of the present invention uses high-resolution imaging equipment or a microscope to observe and measure the contact area between automobile wiring harness terminals during the crimping process of new energy automobile wiring harness terminals in real time, so as to observe and measure the crimping contact area between the wiring harness terminals, and understand the actual contact area between the wiring harness terminals during the crimping process, and finally obtain the crimping contact area of ​​the automobile wiring harness terminals.

[0133] Step S34: performing crimping uniformity evaluation and analysis on the crimping contact pressure distribution area of ​​the automobile wiring harness terminal based on the crimping contact area of ​​the automobile wiring harness terminal to obtain a crimping contact pressure uniformity index of the automobile wiring harness terminal;

[0134] The embodiment of the present invention compares and analyzes the crimping contact area of ​​the automobile wiring harness terminal and the crimping contact pressure distribution area of ​​the automobile wiring harness terminal to evaluate and analyze the uniformity of the pressure distribution during the crimping process, including evaluating whether the pressure distribution in the contact surface area between the wiring harness terminals is uniform and whether there is a situation where the local pressure is too large or too small, that is, whether the pressure distribution to the terminal during the crimping process is evenly distributed on the contact area, and finally obtains the uniformity index of the crimping contact pressure of the automobile wiring harness terminal.

[0135] Step S35: performing terminal crimping quality evaluation and analysis on the crimping process of the new energy vehicle wiring harness terminal according to the automobile wiring harness terminal crimping deformation degree index and the automobile wiring harness terminal crimping contact pressure uniformity index to obtain the new energy vehicle wiring harness terminal crimping quality evaluation result.

[0136] The embodiment of the present invention combines the automobile wiring harness terminal crimping deformation degree index and the automobile wiring harness terminal crimping contact pressure uniformity index obtained by analysis and assigns corresponding weights to each of the indicators. At the same time, each indicator and the product of the indicator weight are evaluated and calculated by using the cumulative summation method, so as to quantitatively calculate the corresponding crimping quality score value, and compare and judge the crimping quality score value obtained by quantitative calculation according to the preset crimping quality standard value. If it is greater than or equal to the standard value, it is judged as good quality, otherwise it is judged as bad quality, so as to fully understand the quality status of the terminal during the crimping process, and finally obtain the crimping quality evaluation result of the new energy vehicle wiring harness terminal.

[0137] The present invention first evaluates and analyzes the degree of deformation of the crimping process of the wiring harness terminal of the new energy vehicle according to the crimping deformation parameters of the wiring harness terminal of the automobile. This analysis aims to understand the deformation of the terminal during the crimping process, including the degree of deformation such as bending, twisting, and stretching. The deformation degree index obtained by analyzing this step can evaluate the degree of deformation of the terminal during the crimping process, thereby providing an important basis for the subsequent crimping quality evaluation. Secondly, by performing a statistical analysis of the pressure distribution area of ​​the crimping contact pressure distribution parameters of the wiring harness terminal of the automobile, this analysis helps to understand the pressure distribution of the terminal during the crimping process, including understanding the pressure distribution density and range of different regions. In this way, the pressure distribution area obtained by statistics can evaluate the pressure distribution of the terminal during the crimping process, thereby providing basic data guarantee for the subsequent crimping uniform evaluation. Then, by monitoring and analyzing the crimping contact area of ​​the wiring harness terminal of the new energy vehicle during the crimping process of the wiring harness terminal of the automobile, this analysis helps to understand the actual contact area of ​​the terminal during the crimping process, thereby understanding the actual contact and contact quality between the terminals. The contact area obtained through monitoring and analysis can evaluate the contact condition of the terminal during the crimping process, thus providing important data support for the subsequent crimping uniformity evaluation. Next, the crimping uniformity evaluation and analysis of the crimping contact pressure distribution area of ​​the automotive wiring harness terminal is carried out based on the crimping contact area of ​​the automotive wiring harness terminal. This analysis aims to evaluate whether the pressure distribution of the terminal is uniform, that is, whether the pressure distribution of the terminal during the crimping process is evenly distributed on the contact area. Through the crimping uniformity index obtained by the evaluation, the pressure distribution of the terminal during the crimping process can be understood, thus providing an important basis for the evaluation of the crimping quality. Finally, the crimping quality evaluation and analysis of the crimping process of the new energy vehicle wiring harness terminal is carried out according to the crimping deformation degree index of the automotive wiring harness terminal and the crimping contact pressure uniformity index of the automotive wiring harness terminal. This analysis aims to evaluate the overall quality of the terminal during the crimping process, including deformation degree and contact pressure distribution uniformity. In this way, the crimping quality evaluation results obtained through comprehensive evaluation can fully understand the quality status of the terminal during the crimping process, thus providing an important reference for optimizing the crimping process and improving the terminal connection quality.

[0138] Preferably, step S4 comprises the following steps:

[0139] Step S41: performing an influence correlation analysis on the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminal according to the crimping quality assessment result of the new energy vehicle wiring harness terminal, and obtaining the influence correlation degree between the crimping quality of the new energy vehicle wiring harness terminal and the crimping parameters;

[0140] The embodiment of the present invention uses an influence correlation analysis method (such as calculating a correlation coefficient) to analyze the terminal crimping parameters (including crimping force, crimping time, crimping head shape, crimping contact pressure, crimping deformation and other parameters) in the crimping process of the new energy vehicle wiring harness terminals by combining the evaluation results of the crimping quality of the new energy vehicle wiring harness terminals obtained by the evaluation analysis, so as to quantitatively calculate and explore the influence of different crimping parameters on the crimping quality of the automobile wiring harness terminals, and finally obtain the influence correlation degree between the crimping quality of the new energy vehicle wiring harness terminals and the crimping parameters.

[0141] Step S42: performing key parameter screening processing on the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminal according to the degree of influence correlation between the crimping quality of the new energy vehicle wiring harness terminal and the crimping parameters, and obtaining a key parameter set affecting the crimping quality of the new energy vehicle wiring harness terminal;

[0142] The embodiment of the present invention compares and judges the influence correlation degree between the crimping quality of the new energy vehicle wiring harness terminal and the crimping parameters obtained by quantitative calculation according to a preset influence correlation threshold. If the influence correlation degree obtained by quantitative calculation is greater than or equal to the preset influence correlation threshold, it means that the corresponding crimping parameter has a great influence on the crimping quality; otherwise, it means that the influence on the crimping quality is very small or non-existent, so as to further screen out the most influential key parameters and collect them in a data set, and finally obtain a set of key parameters affecting the crimping quality of the new energy vehicle wiring harness terminal.

[0143] Step S43: performing terminal crimping optimization analysis on the key parameter set affecting the crimping quality of the new energy vehicle wiring harness terminal, generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme, and executing the corresponding terminal crimping parameter adjustment optimization process.

[0144] The embodiment of the present invention sets optimization goals according to the terminal crimping effect (for example, improving the terminal crimping quality, reducing costs, improving production efficiency, etc.), and determines the optimal terminal crimping parameter combination from the key parameters affecting the crimping quality of the new energy vehicle wiring harness terminal according to the set optimization goals, so as to maximize the optimization goals and formulate corresponding terminal crimping parameter combination optimization schemes, thereby generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme, and finally executing an optimization process including adjusting the crimping force and crimping time or adjusting the crimping time and crimping head shape and other parameter combinations, in the hope of achieving the set optimization goals.

[0145] The present invention firstly performs an influence correlation analysis on the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminal according to the crimping quality evaluation results of the new energy vehicle wiring harness terminal, so as to explore the relationship between the terminal crimping parameters and the crimping quality. This step can determine the degree of influence of different parameters on the terminal crimping quality by analyzing the degree of correlation between the crimping parameters and the crimping quality, thereby providing a direction for subsequent optimization. This process helps to deeply understand the mechanism of the influence of the terminal crimping parameters on the terminal connection quality, and provides an important basis for subsequent parameter optimization. Then, by performing key parameter screening processing on the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminal according to the degree of influence correlation between the crimping quality of the new energy vehicle wiring harness terminal and the crimping parameters, the parameters with a high correlation with the crimping quality are screened out, thereby obtaining a set of key parameters affecting the crimping quality of the new energy vehicle wiring harness terminal. This process helps to focus on the key parameters affecting the crimping quality, thereby saving time and resources in the subsequent optimization analysis and improving the optimization efficiency. Finally, the terminal crimping optimization analysis is performed on the key parameter sets that affect the crimping quality of the new energy vehicle wiring harness terminals to generate a crimping parameter optimization plan and execute the corresponding crimping parameter adjustment optimization process. This step can determine the optimal terminal crimping parameter combination through in-depth analysis of the key parameter sets to maximize the terminal connection quality. This process not only helps to optimize the terminal crimping process and improve the reliability and stability of the terminal connection, but also provides important support for improving the efficiency and quality of the entire crimping process.

[0146] Therefore, the embodiments should be regarded as illustrative and non-restrictive from all points, and the scope of the present invention is limited by the appended claims rather than the above description, and it is therefore intended that all changes falling within the meaning and range of equivalent elements of the application documents are included in the present invention.

[0147] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

Claims

1. A terminal crimping optimization analysis method for new energy vehicle wiring harnesses, characterized in that: The following steps are involved: Step S1: perform spatial structure topological analysis on the crimping process of the new energy vehicle wiring harness terminal to obtain the spatial topological structure of the new energy vehicle wiring harness; perform terminal position and direction analysis on the spatial topological structure of the new energy vehicle wiring harness to obtain the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal; perform wiring harness three-dimensional modeling processing on the wiring harness spatial topological structure of the new energy vehicle wiring harness based on the crimping position of the new energy vehicle wiring harness terminal and the crimping direction of the new energy vehicle wiring harness terminal to generate a three-dimensional spatial model of the new energy vehicle wiring harness; wherein step S1 includes the following steps: Step S11: performing spatial layout exploration and analysis on the wiring harness of the new energy vehicle during the crimping process of the wiring harness terminal of the new energy vehicle to obtain spatial layout distribution law data of the wiring harness of the new energy vehicle; Step S12: performing a spatial structure topological analysis on the new energy vehicle wiring harness during the crimping process of the new energy vehicle wiring harness terminals based on the spatial layout distribution law data of the new energy vehicle wiring harness to obtain a spatial topological structure of the new energy vehicle wiring harness; Step S13: performing terminal position location analysis on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the crimping position of the terminal of the wiring harness of the new energy vehicle; Step S14: performing terminal direction monitoring processing on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the crimping direction of the terminal of the wiring harness of the new energy vehicle; Step S15: performing a three-dimensional modeling process on the wiring harness space topology structure of the new energy vehicle based on the crimping position of the wiring harness terminal of the new energy vehicle and the crimping direction of the wiring harness terminal of the new energy vehicle to generate a three-dimensional space model of the wiring harness of the new energy vehicle; wherein step S15 includes the following steps: Step S151: performing feature corner point detection processing on the crimping position of the wiring harness terminal of the new energy vehicle and the crimping direction of the wiring harness terminal of the new energy vehicle to obtain a feature corner point set of the crimping position of the wiring harness terminal and a feature corner point set of the crimping direction of the wiring harness terminal; Step S152: performing point cloud downsampling processing on the characteristic corner point set of the crimping position of the harness terminal and the characteristic corner point set of the crimping direction of the harness terminal to obtain a point cloud set of the crimping position of the harness terminal and a point cloud set of the crimping direction of the harness terminal; Step S153: performing terminal connection point identification analysis on the spatial topological structure of the wiring harness of the new energy vehicle to obtain the terminal spatial connection points of the wiring harness of the new energy vehicle; Step S154: performing connection relationship mining and analysis on each automobile wiring harness terminal in the new energy automobile wiring harness space topology structure based on the new energy automobile wiring harness terminal space connection point, so as to obtain the crimping space connection relationship between each automobile wiring harness terminal; wherein step S154 includes the following steps: Based on the spatial connection points of the new energy vehicle wiring harness terminals, the spatial topological structure of the new energy vehicle wiring harness is spatially mapped and marked to obtain the spatial connection mapping marking points of the vehicle wiring harness terminals; Based on the space connection mapping marker points of the automobile wiring harness terminals, the connection mode mining and analysis between each automobile wiring harness terminal in the space topology structure of the new energy vehicle wiring harness is carried out to obtain the crimping space connection mode data between each automobile wiring harness terminal; The spatial connection strength between each automobile wiring harness terminal in the spatial topological structure of the new energy automobile wiring harness is calculated to obtain the crimping spatial connection strength between each automobile wiring harness terminal; According to the crimping space connection strength between each automobile wiring harness terminal, the spatial connection implicit rules between each automobile wiring harness terminal in the new energy automobile wiring harness space topology structure are mined and analyzed to obtain the crimping space connection implicit rules data between each automobile wiring harness terminal; Based on the crimping space connection mode data and crimping space connection implicit regularity data between each automobile wiring harness terminal, the connection relationship between each automobile wiring harness terminal in the new energy vehicle wiring harness space topology structure is identified and analyzed to obtain the crimping space connection relationship between each automobile wiring harness terminal; Step S155: performing a three-dimensional modeling process on the wiring harness space topology structure of the new energy vehicle wiring harness based on the crimping spatial connection relationship between each automobile wiring harness terminal and combining the wiring harness terminal crimping position point cloud set and the wiring harness terminal crimping direction point cloud set to generate a three-dimensional spatial model of the new energy vehicle wiring harness; Step S2: performing crimping parameter analysis on the three-dimensional space model of the new energy vehicle wiring harness based on the crimping process of the new energy vehicle wiring harness terminal to obtain the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal; Step S3: performing terminal crimping quality evaluation and analysis on the crimping process of the new energy vehicle wiring harness terminal according to the crimping deformation parameter of the automobile wiring harness terminal and the crimping contact pressure distribution parameter of the automobile wiring harness terminal, and obtaining the crimping quality evaluation result of the new energy vehicle wiring harness terminal; Step S4: performing terminal crimping optimization analysis on the new energy vehicle wiring harness terminal crimping process according to the new energy vehicle wiring harness terminal crimping quality assessment result, generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme to execute the corresponding terminal crimping parameter adjustment optimization process.

2. The terminal crimping optimization analysis method for the new energy vehicle wiring harness according to claim 1 is characterized in that: Step S155 includes the following steps: Based on the crimping spatial connection relationship between each automobile wiring harness terminal, the wiring harness spatial connection relationship of the new energy vehicle wiring harness spatial topological structure is three-dimensionally modeled to obtain the three-dimensional spatial model of the wiring harness connection relationship of the new energy vehicle; Based on the point cloud set of the crimping position of the wiring harness terminal, the three-dimensional space model of the connection relationship of the new energy vehicle wiring harness is processed by position point cloud registration to obtain the three-dimensional space model of the position registration of the wiring harness terminal of the new energy vehicle; Based on the point cloud set of the crimping direction of the wiring harness terminal, the crimping direction fitting optimization is performed on the three-dimensional space model of the position registration of the wiring harness terminal of the new energy vehicle, so as to obtain the three-dimensional space model of the direction fitting of the wiring harness terminal of the new energy vehicle; voxelize the three-dimensional space model fitted in the direction of the new energy vehicle wiring harness terminal to obtain the three-dimensional space voxelized model of the new energy vehicle wiring harness; The three-dimensional voxel model of the new energy vehicle wiring harness is surface smoothed to generate a three-dimensional model of the new energy vehicle wiring harness.

3. The terminal crimping optimization analysis method for the new energy vehicle wiring harness according to claim 1 is characterized in that: Step S2 includes the following steps: Step S21: performing finite element partitioning processing on the three-dimensional spatial model of the wiring harness of the new energy vehicle to obtain a finite element spatial model of the wiring harness of the new energy vehicle; Step S22: setting the crimping simulation boundary conditions for the finite element space model of the new energy vehicle wiring harness based on the crimping process of the new energy vehicle wiring harness terminal, so as to obtain the displacement boundary conditions of the crimping simulation of the automobile wiring harness terminal and the force applied boundary conditions of the crimping simulation of the automobile wiring harness terminal; Step S23: performing terminal deformation parameter analysis on the finite element space model of the new energy vehicle wiring harness based on the automobile wiring harness terminal crimping simulation displacement boundary condition to obtain the automobile wiring harness terminal crimping deformation parameter; Step S24: Based on the force boundary condition applied by the crimping simulation of the automobile wiring harness terminal, the elastic limit modulus of the automobile wiring harness terminal in the finite element space model of the new energy automobile wiring harness is monitored to obtain the elastic limit modulus of the new energy automobile wiring harness terminal; Step S25: Based on the crimping process of the new energy vehicle wiring harness terminals, statistical calculation of the stress distribution between the vehicle wiring harness terminals in the finite element space model of the new energy vehicle wiring harness is performed to obtain the crimping stress distribution parameters between the vehicle wiring harness terminals; according to the elastic limit modulus of the vehicle wiring harness terminals, a contact pressure refinement distribution analysis is performed on the crimping stress distribution parameters between the vehicle wiring harness terminals to obtain the crimping contact pressure distribution parameters of the vehicle wiring harness terminals.

4. The terminal crimping optimization analysis method for the new energy vehicle wiring harness according to claim 3 is characterized in that: Step S23 includes the following steps: Step S231: performing finite element mesh refinement on the finite element space model of the wiring harness of the new energy vehicle to obtain a finite element mesh space model of the wiring harness of the vehicle; Step S232: performing a crimping deformation coupling analysis on the automobile wiring harness terminal in the finite element meshed space model of the automobile wiring harness based on the automobile wiring harness terminal crimping simulation displacement boundary condition to obtain the automobile wiring harness terminal crimping deformation coupling effect data; Step S233: performing a crimping deformation field analysis on the automobile wiring harness terminal in the finite element meshing space model of the automobile wiring harness according to the crimping deformation coupling effect data of the automobile wiring harness terminal to obtain a deformation change field of the automobile wiring harness terminal during the crimping process; Step S234: performing terminal deformation parameter analysis on the deformation change field of the automobile wiring harness terminal crimping process to obtain the automobile wiring harness terminal crimping deformation parameters.

5. The terminal crimping optimization analysis method for the new energy vehicle wiring harness according to claim 4 is characterized in that: Step S232 includes the following steps: Perform structural mechanics field analysis on the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness to obtain the structural mechanics field of the automobile wiring harness terminal; Based on the displacement boundary conditions of the crimping simulation of the automobile wiring harness terminal, the structural deformation analysis of the mechanical field of the automobile wiring harness terminal structure is carried out to obtain the deformation behavior field of the automobile wiring harness terminal structure; The temperature field variation of the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness is analyzed to obtain the temperature variation field of the automobile wiring harness terminal crimping; Based on the temperature change field of automobile wiring harness terminal crimping, the impact assessment analysis on the structural deformation behavior field of automobile wiring harness terminal is carried out to obtain the deformation influencing factor between the temperature change of automobile wiring harness terminal crimping and structural deformation; Based on the deformation influencing factor between the crimping temperature change and structural deformation of the automobile wiring harness terminal, the crimping deformation coupling analysis of the automobile wiring harness terminal in the finite element mesh space model of the automobile wiring harness is carried out to obtain the crimping deformation coupling effect data of the automobile wiring harness terminal.

6. The terminal crimping optimization analysis method for the new energy vehicle wiring harness according to claim 1 is characterized in that: Step S3 includes the following steps: Step S31: evaluating and analyzing the deformation degree of the crimping process of the new energy vehicle wiring harness terminal according to the crimping deformation parameters of the automobile wiring harness terminal to obtain a crimping deformation degree index of the automobile wiring harness terminal; Step S32: performing pressure distribution area statistical analysis on the pressure distribution parameters of the automobile wiring harness terminal crimping contact pressure to obtain the pressure distribution area of ​​the automobile wiring harness terminal crimping contact pressure; Step S33: monitoring and analyzing the crimping contact area of ​​the automobile wiring harness terminal during the crimping process of the automobile wiring harness terminal, and obtaining the crimping contact area of ​​the automobile wiring harness terminal; Step S34: performing crimping uniformity evaluation and analysis on the crimping contact pressure distribution area of ​​the automobile wiring harness terminal based on the crimping contact area of ​​the automobile wiring harness terminal to obtain a crimping contact pressure uniformity index of the automobile wiring harness terminal; Step S35: performing terminal crimping quality evaluation and analysis on the crimping process of the new energy vehicle wiring harness terminal according to the automobile wiring harness terminal crimping deformation degree index and the automobile wiring harness terminal crimping contact pressure uniformity index to obtain the new energy vehicle wiring harness terminal crimping quality evaluation result.

7. The terminal crimping optimization analysis method for the new energy vehicle wiring harness according to claim 1 is characterized in that: Step S4 includes the following steps: Step S41: performing an influence correlation analysis on the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminal according to the crimping quality assessment result of the new energy vehicle wiring harness terminal, and obtaining the influence correlation degree between the crimping quality of the new energy vehicle wiring harness terminal and the crimping parameters; Step S42: performing key parameter screening processing on the terminal crimping parameters in the crimping process of the new energy vehicle wiring harness terminal according to the degree of influence correlation between the crimping quality of the new energy vehicle wiring harness terminal and the crimping parameters, and obtaining a key parameter set affecting the crimping quality of the new energy vehicle wiring harness terminal; Step S43: performing terminal crimping optimization analysis on the key parameter set affecting the crimping quality of the new energy vehicle wiring harness terminal, generating a new energy vehicle wiring harness terminal crimping parameter optimization scheme, and executing the corresponding terminal crimping parameter adjustment optimization process.

Images