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15 July 2025, Volume 50 Issue 13 Previous Issue   
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New Energy Vehicle
Design and Research
Testing and Experiment
Process·Materials
Automobile Education
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New Energy Vehicle

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Research on the Impact of Energy Consumption of Vehicle Low-Voltage Auxiliary on Driving Range Power Consumption BAI Bateer, ZHANG Yiming, NIE Guole, ZHANG Xianfeng, NIU Yazhuo 2025, 50(13): 1-6.  DOI: 10.16638/j.cnki.1671-7988.2025.013.001 Abstract ( )   PDF (1083KB) ( )   This study conducts systematic energy consumption evaluations of low-voltage auxiliary (LVA) systems in 4 types of new energy vehicles (NEVs), characterizes their operational patterns across different vehicle operating conditions and evaluates their systemic impact on vehicular energy consumption. Results demonstrate that under worldwide harmonized light vehicles test cycle (WLTC) and China light-duty vehicle test cycle (CLTC), the average power consumption of LVA systems varies between 114 and 595 W. High-energy-consumption auxiliaries include intelligent driving systems, smart cockpit systems, fuel pumps, multimedia displays, battery/motor controllers, thermal management water pumps, and combination lamps. The power consumption of LVA demonstrates significant impacts on the energy economy of NEVs. Test result across 4 types of NEVs reveals that LVA energy consumption accounts for 2.6%～10.3% of total energy expenditure under CLTC cycles. A targeted 130 W reduction in LVA power consumption achieves a 2.3% decrease in CLTC driving cycle energy consumption. These findings highlight that strategic optimization of LVA energy consumption presents an effective way for enhancing NEVs range efficiency. References | Related Articles | Metrics

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Analysis and Optimization of High-Voltage Disconnection and Charging Failure in JAC EV3 under Low-Temperature Conditions GUAN Zeqiang 2025, 50(13): 7-11.  DOI: 10.16638/j.cnki.1671-7988.2025.013.002 Abstract ( )   PDF (1124KB) ( )   Aiming at the problem of charging system failure of new energy vehicles in a lowtemperature environment below -20 ℃, this article takes the fast charging failure of Jianghuai EV3 battery electric commercial vehicle in a low-temperature environment below -20 ℃ as the entry point, and reveals the energy interaction contradiction mechanism between the battery thermal management system and the charging system. Through fault source tracing, it is found that under low-temperature and low-power conditions, the allowable discharge current of the battery is small, which is significantly out of balance with the working current required by the water heating heater, triggering the discharge overcurrent protection and causing the charging to be interrupted. The article proposes for the first time the precise compensation of energy consumption of water heating heaters based on the dynamic current compensation algorithm. Experimental verification shows that this strategy can be successfully charged in a low-temperature environment below -20 ℃ and has significant technical advantages. The research results have effectively solved the problem of energy coordination and control between battery thermal management requirements and charging systems, providing key technical support for the promotion and application of new energy vehicles in high-latitude cold regions. References | Related Articles | Metrics

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Optimization Analysis of Longitudinal Play during Low-Speed Braking of Electric Vehicles HE Chao, MAO Qiao* , ZHANG Lunwei 2025, 50(13): 12-17.  DOI: 10.16638/j.cnki.1671-7988.2025.013.003 Abstract ( )   PDF (1063KB) ( )   Due to the characteristics of large mass and low center of gravity, electric vehicles are more prone to longitudinal run-out during low-speed braking compared with traditional fuel vehicles. Longitudinal movement of vehicles affects vehicle comfort, reduces the subjective score of vehicles, and is prone to cause customer complaints. The article analyzes the mechanism of this phenomenon through real vehicle test data and proposes that reducing the anti-lift characteristics of the rear suspension is the key to solving this problem. Based on this, the ADAMS vehicle dynamics model is established. Through the simulation analysis of different schemes, it is concluded that when the hard point design of the suspension simultaneously meets the anti-nod rate of the front suspension ≤48% and the anti-lift rate of the rear suspension ≤62%. The longitudinal run-out of the vehicle during low-speed braking can be significantly improved, and this conclusion has been verified in the development of the next-generation vehicle models. The scheme proposes in this study can provide a reference for engineers when solving such problems and enhance the product strength of the developed vehicle models. References | Related Articles | Metrics

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Energy Management Strategy for EV Hybrid Energy Storage Based on Fuzzy Neural Networks LU Tiejun, WEI Wenxiang* , HU Tianxiang, ZHAO Bangtao 2025, 50(13): 18-24,35.  DOI: 10.16638/j.cnki.1671-7988.2025.013.004 Abstract ( )   PDF (1952KB) ( )   With the increasing demand for efficient energy management in electric vehicles, the shortcomings of traditional energy management strategies in adaptability and accuracy under complex working conditions have gradually become prominent. Therefore, this paper proposes a hybrid energy storage management strategy based on fuzzy neural network, aiming to optimize the collaborative working mechanism of power battery and supercapacitor. Verification through the joint simulation platform of Simulink and Cruise shows that the strategy can preferentially call supercapacitors in high-power demand scenarios, effectively reducing battery load and extending its service life; during braking energy recovery, supercapacitors can quickly absorb energy, significantly improving energy recovery efficiency. Simulation data shows that compared with the fuzzy control and logic threshold control strategies, this method increases the battery state of charge (SOC) by 0.51% and 1.96% respectively, not only extending the vehicle's driving range, but also effectively suppressing current fluctuations. The above achievements have important application value for energy management of electric vehicles. References | Related Articles | Metrics

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Noise Optimization of High-Voltage Relays in Electric Vehicle Battery Packs LI Bin, TANG Taofeng* , LUO Qi 2025, 50(13): 25-29.  DOI: 10.16638/j.cnki.1671-7988.2025.013.005 Abstract ( )   PDF (1021KB) ( )   Aiming at the problem of large power supply and discharge noise of high-voltage relays in the power battery distribution unit (BDU) of new energy hybrid and pure electric vehicle models, this article tests the noise of high-voltage relays in the battery pack under different measures by using the Lond sound collector in the semi-anechoic chamber, and obtains the sound pressure level (Aweighted) and loudness data of the high-voltage relay noise. Through comparison, it is found that the use of horizontal relays can reduce the noise of power on and off the battery pack by 2 to 6 dB(A), and the use of BDU vibration damping pads can reduce the noise by 1 to 3 dB(A) and the loudness by 1 to 3 sone. The optimized BDU vibration damping pad can reduce noise by 1 to 5 dB(A) and loudness by 3 to 7 sone. Wrapping with sound-absorbing cotton can reduce noise by 1 to 5 dB(A) and loudness by 1 to 3 sone. Optimizing the battery pack structure can reduce noise by 7 to 10 dB(A) and loudness by 50%, approximately 15 sone. Experiments have proved that the noise from the power-on and power-on of the battery pack is mainly transmitted through the structure. The horizontal relay performs better in terms of noise compared to the vertical one. Optimizing the design of the vibration damping pad and the structural mode of the battery pack can effectively reduce this noise value. References | Related Articles | Metrics

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Research on the Adhesion Failure Mechanism of High-Voltage Relays in Electric Vehicles and the Development of a Systematic Diagnostic Framework LI Jintao 2025, 50(13): 30-35.  DOI: 10.16638/j.cnki.1671-7988.2025.013.006 Abstract ( )   PDF (3522KB) ( )   High-voltage relays, as core safety components of the power system in new energy vehicles, play a critical role in controlling and protecting the power circuits of electric vehicles. The issue of contact adhesion failure in these relays poses a significant threat to the safety and reliability of the entire vehicle. To systematically address this issue, this study, based on actual fault cases from a specific vehicle model, combines scanning electron microscopy (SEM) analysis of contact material migration and molten layer formation mechanisms to reveal the physicochemical mechanisms behind high-voltage relay adhesion failures. The research establishes morphological characteristic-operational condition mapping rules and proposes a "failure mechanism－diagnostic strategy－preventive technology" three-dimensional research framework. It also conducts systematic optimization to address potential causes of adhesion. Through measures such as battery management syste software and hardware control, relay component optimization, and harness inspection, the market relay failure rate has been significantly reduced from 57.4 to 10.9, demonstrating the effectiveness of these optimization measures. This study provides important theoretical support and practical guidance for improving the reliability and safety of high-voltage relays in electric vehicles. References | Related Articles | Metrics

Design and Research

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Cutting Characteristics and Finite Element Analysis of Single Wood Panels in Automotive Interiors KONG Dexi 2025, 50(13): 36-41.  DOI: 10.16638/j.cnki.1671-7988.2025.013.007 Abstract ( )   PDF (1387KB) ( )   Considering the complexity and instability of the automatic cutting process of single wood boards, this paper, based on the finite element analysis theory, aims to explore the stress and strain laws of single wood boards under different environmental loads, and then design the force analysis scheme for their cutting environment. The research adopts the finite element analysis simulation method. Firstly, the environmental load design process is given, and then based on the finite element analysis method of single wood board cutting, the mechanical properties and variation trends of single wood boards under different materials, thicknesses, moments and support points are analyzed, and the optimal moment solutions corresponding to different thicknesses and rotary cutting radii are solved. The simulation results show that the maximum stress and strain of the wood board are inversely proportional to the thickness and directly proportional to the moment and the long side support can reduce the maximum stress and strain. The research results not only theoretically improve the theory of automatic cutting of single wood boards, but also have significant practical significance for the design of automatic cutting systems. References | Related Articles | Metrics

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Research on Vibration Reduction of First-Stage Gear Pair of Reducer Based on Microscopic Modification LIANG Jiulong 2025, 50(13): 42-48.  DOI: 10.16638/j.cnki.1671-7988.2025.013.008 Abstract ( )   PDF (1839KB) ( )   The vehicle reducers not only play a role in reducing speed and increasing torque, but also ensure the smoothness of transmission. Firstly, the article uses Romax software to build a rigidflexible coupling model of the three-stage reducer of electric vehicles. It systematically analyzes the transmission error of the first-stage reduction gear pair, the load per unit length of the tooth surface, and the vibration response at the system bearing housing, and obtains the vibration characteristics of this first-stage reduction gear pair. Secondly, with the optimization goals of minimizing the peak value of transmission error and the maximum unit length load on the tooth surface, the genetic algorithm is adopted to optimize and solve the microscopic modification parameters of the gears. Finally, the transmission stability of the first-stage gear pair of the reducer is analyzed based on the optimized microscopic modification parameters. The results show that after the microscopic modification of the gears, the peak value of the transmission error of the first-stage reduction gear pair is reduced by 32.9%, the maximum load per unit length is reduced by 9.7%, and the peak value of the vibration acceleration at the input shaft bearing is reduced by 17.3%. This effectively reduces the transmission excitation of the gear pair and provides a basis for the subsequent research on noise, vibration and harshness (NVH). References | Related Articles | Metrics

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Analysis and Solution of Emergency Braking and Deviation of a Certain Logistics Vehicle HUANG Wang 2025, 50(13): 49-53.  DOI: 10.16638/j.cnki.1671-7988.2025.013.009 Abstract ( )   PDF (1182KB) ( )   A certain logistics vehicle deviated to the left during the emergency braking condition, veering 1.5 m out of the center of the lane to the left. After optimizing and adjusting the longitudinal torsional motion interference between the steering tie rod and the leaf spring, and reloading the vehicle for test verification, it deviated 0.25 m to the left, which is within the acceptable standard range, solving the problem of the vehicle's emergency braking deviation. Through multiple tests, it can be concluded that the longitudinal torsional interference of the leaf springs in the suspension system is an important factor leading to braking deviation. After calculation and experimental verification, it is concluded that under the emergency braking condition, the longitudinal torsional interference amount is less than 2 mm and the longitudinal torsional angle is less than 6°, and the entire vehicle will not have the dangerous condition of emergency braking deviation. The article establishes a calculation method for evaluating the motion interference quantity of the spring between the steering tie rod and the steel plate to assess the degree of matching between the steering system and the suspension system, providing a certain reference for the layout of the steering suspension of the entire vehicle. References | Related Articles | Metrics

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Design of Drivability Analysis System for New Energy Vehicle Based on MATLAB App Designer BU Kai 2025, 50(13): 54-59.  DOI: 10.16638/j.cnki.1671-7988.2025.013.010 Abstract ( )   PDF (1284KB) ( )   In order to solve the problem of the lack of objective quantification in the evaluation of vehicle drivability within the industry, this paper designs an objective analysis system based on the subjective evaluation indicators of vehicle drivability. The codes for working condition recognition, signal processing and drivability index analysis are written through MATLAB App Designer to conduct the analysis of responsiveness, smoothness and differences in driving style for five typical working conditions of the vehicle, namely creep, starting acceleration, constant speed, sudden acceleration and deceleration, and coasting deceleration. The results show that the drivability analysis system has achieved good effects in the practical application of a certain plug-in hybrid electric vehicle (PHEV) model, significantly improving the efficiency of drivability development and contributing to promoting the standardization and automation process of objective analysis of vehicle drivability. References | Related Articles | Metrics

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Study on Transmission Performances of High Tooth Gear of Light Electric Drive Axle ZHANG Jinzhao 2025, 50(13): 60-63.  DOI: 10.16638/j.cnki.1671-7988.2025.013.011 Abstract ( )   PDF (1872KB) ( )   In recent years, high tooth gear has become a hot research field in gear industry because of the greater bearing capacity and smaller transmission noise. To study the mechanism of the advantage of high tooth gear, this article focuses on the high tooth gear of light electric drive axle. Load tooth contact analysis of the gear drive is implemented by ABAQUS. Make a contrastive study on transmission performances of high tooth gear and normal tooth gear, including the distribution of the bending stress, the distribution of the contact stress, the contact ratio and load transmission error. The conclusion is that the bending strength of high tooth gear is improved by 27.76% than normal tooth gear, the contact strength of high tooth gear is improved by 21.93% than normal tooth gear, the contact ratio of high tooth gear is improved by 16.27% than normal tooth gear, load transmission error of high tooth gear is reduced by 43.48% than normal tooth gear. References | Related Articles | Metrics

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Development of Pedestrian Protection aPLI Leg Type Collision Safety Performance SUN Mengd 2025, 50(13): 64-70.  DOI: 10.16638/j.cnki.1671-7988.2025.013.012 Abstract ( )   PDF (1724KB) ( )   In order to cope with the more and more strict evaluation system of pedestrian protection and reduce the leg damage of pedestrians in automobile-pedestrian collisions, this paper compares the evaluation requirements of advanced pedestrian legform impactor (aPLI) leg type in various regulations, and takes European new car assessment programmex (E-NCAP) five-star as the target, takes the newest aPLI leg model as the object of study, analyzes the damage form of the aPLI leg type, and calculates the effect of different calf support schemes on the aPLI leg type using simulation, and wells the real vehicle verification. Optimization results show that: for this sport utility vehicle (SUV) model, when the approach angle is 18.5°, the position of the lower leg support and the scheme of 30-ratio foam support block have the most obvious effect on the optimization of leg type. The results show that this scheme is effective, and the aPLI leg type can reach full score of E-NCAP, which provides guidance for the development of subsequent models. References | Related Articles | Metrics

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Optimized Designs of Gearbox Based on Torque Capacity Expansion GAO Donghai, GE Rong, YU Youping, LIU Haichao, SHI Yousheng 2025, 50(13): 71-79,94.  DOI: 10.16638/j.cnki.1671-7988.2025.013.013 Abstract ( )   PDF (3562KB) ( )   With the research purpose of increasing and expanding the rated input torque of a 5MT gearbox from 300 Nm to 350 Nm, firstly, through bench tests and MASTA modeling analysis on the original transmission respectively, the components with insufficient strength such as gears, shafts, bearings, synchronizers, and housings and their weak points are identified. Then, the optimized designs and process schemes such as powerful shot peening and microscopic parameters for gears, thickening of the weak journal of the shaft, raw materials and heat treatment methods with better switching performance of bearings, powder metallurgy forged steel parts for synchronizer tooth hubs and adding surface treatment, and optimizing the arrangement of reinforcing ribs for the shell are proposed. Finally, bench tests and MASTA analyses are conducted on the gearboxes with enhanced measures implemented. The results show that the optimized gearbox can meet the requirements of the 350 Nm input torque working condition and achieve the purpose of torque expansion. References | Related Articles | Metrics

Testing and Experiment

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Calculation and Analysis of Trackless Rubber Tire Vehicles Instability in Curves YANG Liang, ZHANG Yongren, CAO Xiaowei, LI Kuan, XIE Zhiguo 2025, 50(13): 80-84.  DOI: 10.16638/j.cnki.1671-7988.2025.013.014 Abstract ( )   PDF (1186KB) ( )   The instability condition is calculated and analyzed when the rubber tire vehicle enters the curve to provide the basis for the sliding vehicle protection in curves in this paper. The roll acceleration threshold of vehicle rollover is derived by analyzing the force of the sliding vehicle in the roll plane. The formula for calculating steady-state steering radius of vehicle is obtained by establishing a two-degree-of-freedom model of vehicle, calculating the entry speed of sliding vehicle and deriving the entry steering angle under Ackermann steering conditions. The parameters of the instability calculation of the sliding vehicle are given. MATLAB/Simulink is used to simulate the instability of the vehicle entering the corner with the sliding distance from 25 m to 200 m. The results show that when the sliding distance is 0~100 m, the operating margin of the steering wheel is 2.85°, and the vehicle has the risk of scratch collision. When the sliding distance is greater than 100 m, the lateral acceleration of the vehicle is greater than 5.16 m/s2 , and the vehicle will roll over. References | Related Articles | Metrics

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Influence Low Rolling Resistance Tires on the Performance of Light Commercial Vehicles LIANG Zhipeng, XU Hongyou, CUI Hongyue, REN Hongfeng, TIAN Shuai, WANG Kun 2025, 50(13): 85-90.  DOI: 10.16638/j.cnki.1671-7988.2025.013.015 Abstract ( )   PDF (1071KB) ( )   In response to the national call for energy conservation and emission reduction, select the tire specification with the highest frequency of use for light commercial vehicles for low rolling resistance development. By comparing low rolling resistance tires with regular tires, this study analyzes the impact of low rolling resistance tires on the performance of light commercial vehicles, including power, braking, handling stability, smoothness, fuel consumption, wear, and braking performance on icy and snowy roads. According to the experimental results, reducing the rolling resistance coefficient of low rolling resistance tires by 21.4% can save about 6.5% of fuel consumption for the entire vehicle. At the same time, low rolling resistance tires can meet the vehicle's requirements for power, braking, handling stability, smoothness, fuel consumption, wear, and braking performance on icy and snowy roads. This provides a basis for the application of low rolling resistance tires in light commercial vehicles. References | Related Articles | Metrics

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Failure Analysis of a Non Load Bearing Chassis Front Shock Absorber Bracket WANG Zhaoliang, MEI Qiuwu, LAI Yudong, QIU Zufeng 2025, 50(13): 91-94.  DOI: 10.16638/j.cnki.1671-7988.2025.013.016 Abstract ( )   PDF (2174KB) ( )   The automotive shock absorber is one of the core components of the vehicle suspension system, and how to design a highly reliable shock absorber with the aid of digital simulation technology is of great significance. This paper addresses the problem of cracking in the front shock absorber bracket of a test vehicle. Through strength and durability simulation analyses on the failed front shock absorber bracket, the causes of component failure are explored. Additionally, fault reproduction and structural simulation optimization are conducted, providing an effective method for failure analysis of such components in test vehicles. The results of structural optimization show that the fatigue life of the strengthened shock absorber bracket has increased by 87 times, significantly enhancing the design reliability of this component. Furthermore, it has successfully passed the road test. References | Related Articles | Metrics

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Study on Natural Aging Performance of Vehile －Take the Humid and Thermal Environment of Hainan as an Example WU Wenqian1 , GAO Shanshan1 , LI Yongwei2 , CHAO Hui2 , LUO Xiong2 , YUAN Leilei1 2025, 50(13): 95-99，106.  DOI: 10.16638/j.cnki.1671-7988.2025.013.017 Abstract ( )   PDF (1446KB) ( )   In this paper, the static exposure test of the vehicle is carried out in Hainan test site for 1 year, and the change of weather resistance of the vehicle components is regularly observed, the change characteristics of the microenvironment and the change trend of volatile organic compounds (VOC) and odor inside the vehicle are monitored. The aging behavior of the vehicle is further studied to understand the main problems of aging and the characteristics of changes in the microenvironment inside the vehicle. The results show that the problems such as opening glue, foaming, powder, precipitation, separation, corrosion, fading and cracking are the main problems in this experiment, and the development of subsequent models should focus on such aging problems, and the interior microenvironment is related to the type of vehicle glass. With the accumulation of placing time, the odor of the vehicle has been in a relatively stable state, and no deterioration has occurred, and the performance is better. The VOC marker of the vehicle shows a trend of first increasing and then decreasing after exposure to sunlight for one month, which is consistent with the emission rule and consistent with the current test results of parts. References | Related Articles | Metrics

Process·Materials

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Causes and Solutions for Deformation and Cracking Failure of Automobile Plastic Bottom Guard Plate LI Zeyou, YANG Yong, ZHANG Wanxin 2025, 50(13): 100-106.  DOI: 10.16638/j.cnki.1671-7988.2025.013.018 Abstract ( )   PDF (8086KB) ( )   Automotive plastic bottom guard plate have functions such as protecting the vehicle bottom, guiding traffic and reducing noise. However, during the use of automobiles, the road environment is harsh, and plastic bottom guard plate may have quality problems such as deformation and cracking, affecting the overall performance of the vehicle and even endangering the safety of drivers and passengers. Therefore, how to avoid deformation and cracking of plastic bottom guard plate during the design and manufacturing process has become one of the important issues faced by the automotive industry. This article aims to analyze the failure reasons of deformation and cracking of plastic bottom guard plate during the vehicle road test, optimize the product installation structure in combination with computer aided engineering (CAE) simulation technology, and propose corresponding solutions. The results show that factors such as the installation and fixation form, structural design, material selection and manufacturing process affect the reliability of the bottom guard plate. By deeply exploring the causes of deformation and cracking of the bottom guard plate and the solutions, it is expected to provide certain design references for related industries. References | Related Articles | Metrics

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Fault Maintenance Analysis and Application of Tool Chang in Horizontal Machining Center ZHU Changlong, WANG Le, HAO Yong, HU Jinming, HAN Xuchun 2025, 50(13): 107-110，145.  DOI: 10.16638/j.cnki.1671-7988.2025.013.019 Abstract ( )   PDF (1128KB) ( )   Nowadays, as the core component of computer numerical control machining center equipment, the tool changing mechanism poses higher requirements for the skill levels of professional management and maintenance personnel in terms of ensuring its stable operation and rapid recovery after a failure. Firstly, this paper thoroughly analyzes the operation principle of the tool changing mechanism of the SW (BA722) double spindle horizontal machining center.Then,it systematically sorts out common fault types, deeply analyzes the causes of faults in combination with actual cases, and finally proposes targeted and scientific maintenance methods and preventive measures. The repair of tool changing faults is not only a technical maintenance process, but also a comprehensive optimization of production guarantee, cost control, and safety management through a systematic approach, which is of great significance for the sustainable and stable operation of the manufacturing industry. References | Related Articles | Metrics

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Introduction to AUDIT Method for Vehicle Products XUE Kaiping 2025, 50(13): 111-115.  DOI: 10.16638/j.cnki.1671-7988.2025.013.020 Abstract ( )   PDF (1382KB) ( )   With the rapid growth and popularization of new energy vehicles,customer experience is overturning the traditional definition of quality in the automotive industry. Early AUDIT reviews measured the severity of defects from the perspectives of customer discovery and process technology, which can no longer meet current practical requirements. In response to the problems existing in current vehicle product audits, such as the lack of description of defect level definitions and vague classification of functional defects, the new AUDIT review measures the severity of defects based on their impact on customers' daily use, particularly introducing the concept of safety, compliance and emissions (SCE). This article introduces "voice of customer audit (VOCA)" aiming to establish a standardized and procedural method for simulating customer reviews of vehicle quality, the vehicle review is divided into four visual levels and four defect levels, and the scoring content and criteria for each level and defect level are defined. References | Related Articles | Metrics

Automobile Education

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Research and Exploration of Teaching Mode Reform in New Energy Vehicle Engineering Major ZHANG Junxi, ZHAO Kun, WANG Xin, WEI Junchao 2025, 50(13): 116-120.  DOI: 10.16638/j.cnki.1671-7988.2025.013.021 Abstract ( )   PDF (1469KB) ( )   In the backdrop of the "new four modernizations" in the automotive industry, the transformation of the automotive industry driven by new quality productivity is constantly accelerating, and the development of the industry and technological progress have put forward higher requirements for the training of automotive professionals. New energy vehicle engineering, as an emerging engineering major, solves the talent cultivation problem for the "new four modernizations" of automobiles from a scientific perspective. The team of new energy vehicle engineering at Xi'an Aeronautical University is exploring the optimization of the curriculum system for major, and the innovation of the "one core, four dimensions" talent cultivation model is proposed. By dividing the curriculum system into four major modules and subdividing the curriculum system links and extracurricular extensions under each module, it closely connects with the needs of enterprises, and based on that, the "three stage guidance from shallow to deep" teaching methods and the reform practice of ideological and political education in professional courses have been carried out. This model can provide reference and inspiration for the innovation of talent cultivation in automotive majors. References | Related Articles | Metrics

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Exploration of the Cultivation Path of Craftsmanship Spirit in the New Energy Vehicle Technology Major of Higher Vocational CHEN Junjie, PENG Fei, CHANG Le, ZHAO Chang, SHI Yuanfang 2025, 50(13): 121-124.  DOI: 10.16638/j.cnki.1671-7988.2025.013.022 Abstract ( )   PDF (944KB) ( )   In order to implement the fundamental task of cultivating morality and talents, and cultivate high-level skilled talents suitable for the new energy vehicle industry, fully integrating the craftsmanship spirit into the new energy vehicle professional courses is an important measure of vocational education teaching reform. This article is based on the connotation of the craftsmanship spirit, analyzes the practical of integrating the craftsmanship spirit into the new energy vehicle professional courses, and proposes countermeasures from three aspects: the internal mechanism of the craftsmanship spirit, teaching mode, and teaching resources, in this way to achieve the value guidance of the craftsmanship spirit for students and effectively enhance students' spirit of craftsmanship spirit. References | Related Articles | Metrics

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Focusing on Digital Transformation to Promote Innovation in Talent Training Models －Taking the Automotive Electronics Technology Major as an Example HU Yue, SUN Kangming 2025, 50(13): 125-129.  DOI: 10.16638/j.cnki.1671-7988.2025.013.023 Abstract ( )   PDF (1221KB) ( )   With the advancement of technology and the digital trend of the global economy, the automotive manufacturing sector has become one of the key supports and core competencies in all industries. The Automotive Electronics Technology major has undergone digital transformation to keep up with the development trends of the industry and promote the innovation of the professional talent cultivation model. The article describes the methods, means and achievements of digital transformation in the automotive electronics technology major, indicating that through digital transformation, a new teaching model of "one course, two practices" is formed. Both students' practical abilities and the professional employment rate are enhanced, which can cultivate more high-quality and highly skilled talents for the development of the automotive electronics industry References | Related Articles | Metrics

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Application of Modular Topic-Based Teaching in the Construction of Automotive Design First-Class Course CHANG Sheng, ZHANG Kai, YANG Baocheng 2025, 50(13): 130-134.  DOI: 10.16638/j.cnki.1671-7988.2025.013.024 Abstract ( )   PDF (1260KB) ( )   The modular topic-based teaching method can effectively align with the teaching topic, reshape the course content, and enhance the teaching efficiency. Centering on the construction objectives and requirements of automobile design first-class course, this paper analyzes the characteristics of modular topic-based teaching, expounds the teaching implementation process and the evaluation of teaching effect, and module topic-based teaching improves the pertinence and effectiveness of teaching in the construction of Automobile Design first-class course through continuous deepening of teaching reform and innovation. The application of the modular topic-based teaching method can further improve the quality of talent cultivation in the field of vehicles, and optimizing and improving this teaching method also provides ideas for the construction of first-class courses. References | Related Articles | Metrics

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The Practice of Integrating Post, Competition, and Certification in the Curriculum-based Ideological and Political of the "Four Pillars Cultivating Craftsmen" －Take the Maintenance of the Motor and Control System of New Energy Vehicles as an Example XIONG Siqin, LI Wei, SU Shijian, ZHOU Huan 2025, 50(13): 135-140.  DOI: 10.16638/j.cnki.1671-7988.2025.013.025 Abstract ( )   PDF (1358KB) ( )   The integration of curriculum-based ideological and political with the practice integrating "post, competition, and certification (PCC)" framework is a critical approach for cultivating technical and skilled talents in the new era. This study takes the course new energy vehicle motor and control system maintenance as an example to demonstrate a practical model of this integration. By analyzing the current integration status of ideological political education and the PCC framework,a four pillars cultivating craftsmen model of ethics cultivation, practice strengthening, competitiondriven aspiration, and certification-built confidence is established. The course content is restructured, adopting a "explicit learning, practical doing, implicit teaching" pedagogy to optimize online and offline teaching processes, alongside a "5+5+N" three-tier evaluation system. This has achieved dual objectives of ideological immersion and enhanced vocational skills. Survey results indicate that 93.6% of students reported improved understanding of job responsibilities, and 99.3% passed the "1+X" vocational skill certification exams. The findings validate that this model effectively elevates students' technical proficiency and professional competencies. References | Related Articles | Metrics

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Research on Curriculum Reform in the Field of Autonomous Driving Based on OBE-PBL Teaching Mode －Taking the Machine Vision Course as an Example SONG Qingmin, SONG Xianan, LI Jiangjiang* , ZHANG Yachao, CHEN Huili 2025, 50(13): 141-145.  DOI: 10.16638/j.cnki.1671-7988.2025.013.026 Abstract ( )   PDF (1176KB) ( )   With the rapid development of intelligent driving technology, the demand for machine vision professionals in the field of autonomous driving is increasing day by day. Therefore, the article proposes a teaching model reform plan based on the combination of outcome-based education (OBE) and problem-based learning (PBL), which aims to improve the teaching effectiveness and talent cultivation quality of machine vision courses by reconstructing the curriculum system and optimizing teaching content and methods. The article first clarifies the specific requirements for machine vision skills in the field of autonomous driving, and based on this, sets the outcome goals for course learning to ensure that the teaching direction is closely aligned with industry needs. Then the article introduce the PBL teaching mode, by designing project tasks that are close to practical engineering problems, to guide students to actively explore and cooperate in learning, which can strength their ability to solve complex problems. Research has shown that the OBE-PBL teaching model effectively promotes the deep integration of students' theoretical knowledge and practical skills, and significantly improves their innovative thinking and practical operation abilities in the field of machine vision for autonomous driving. References | Related Articles | Metrics

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Teaching Exploration on Integrating Curriculum Ideological and Political into the Curriculum of Automobile Electrical System Detection and Maintenance CHEN Meiqin 2025, 50(13): 146-150.  DOI: 10.16638/j.cnki.1671-7988.2025.013.027 Abstract ( )   PDF (1244KB) ( )   This paper aims to explore how to effectively integrate curriculum ideological and political into professional curriculum teaching. Taking the online quality curriculum of Automobile Electrical System Detection and Maintenance as an example, analyzes the current situation and existing problems of integrating curriculum ideological and political education into professional curriculum teaching, explores effective strategies and methods for integrating curriculum ideological and political into professional teaching, and evaluates the effectiveness of integrating curriculum ideological and political into professional curriculum teaching. This paper not only provides empirical support for the reform of higher education, but also offers referenceable experiences and strategies for the construction of curriculum ideological and political in other professional curriculum. References | Related Articles | Metrics

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Control Principle and Fault Diagnosis of BYD Qin EV Keyless Entry System WANG Jian, SONG Guicui, DONG Xiaolin, ZHENG Cong 2025, 50(13): 151-155.  DOI: 10.16638/j.cnki.1671-7988.2025.013.028 Abstract ( )   PDF (1770KB) ( )   This paper takes the 2020 BYD Qin EV as the research object, systematically analyzes the structural composition, control logic and workflow of the keyless entry system, and constructs a complete methodology for fault diagnosis and maintenance. Based on the BYD vehicle network architecture, the working principle of the keyless entry system is elaborated in detail, covering the 125 kHz low-frequency wake-up signal transmission, 315 MHz high-frequency radio frequency communication, the authentication process between the body control module (BCM) and the smart key, as well as the control logic of actuators such as door locks and trunk locks. The study shows that the system adopts a hierarchical control strategy, realizes data interaction between modules through CAN/LIN bus, and is equipped with a dynamic encryption authentication mechanism to ensure security. Aiming at typical faults of the keyless entry system, the paper proposes a three-stage diagnostic method of "signal traceability, segmental troubleshooting, and data verification", providing references for the fault diagnosis of anti-theft systems in new energy vehicles. References | Related Articles | Metrics

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Overview of the Development of Ground Unmanned Equipment LI Lizhi, HAN Jun, CHEN Cong, LIU Sai, DING Haojian 2025, 50(13): 156-162.  DOI: 10.16638/j.cnki.1671-7988.2025.013.029 Abstract ( )   PDF (2699KB) ( )   Due to differences in usage environment and mission tasks, ground unmanned equipment lags behind in the development of intelligence compared to intelligent driving vehicles.This article conducts research on the current development status of ground unmanned equipment at home and abroad, and lists typical ground unmanned equipment in various countries. The main characteristics of ground unmanned equipment in the development process are summarized. Finally, the shortcomings of current ground unmanned equipment are analyzed, and the future development of ground unmanned equipment is discussed from multiple aspects such as environmental perception, highprecision maps, construction of driving models, establishment of experimental systems, and systematic collaborative operations. This provides valuable experience for the design and development of ground unmanned equipment in the future. References | Related Articles | Metrics