| In recent years,with the continuous improvement of market penetration of new energy vehicles in China,many secondary vocational schools have newly opened the specialty of "new energy vehicle maintenance".The maintenance of the motor drive system of new energy vehicles is a core course in the field of new energy vehicle application and maintenance,with an important position.This course plays a key role in guiding students to learn knowledge related to new energy vehicles,cultivating students’ interest in learning new energy vehicles,and cultivating their habits of safe operation.Through the study of this course,students can master the basic working principles and common fault diagnosis methods of power batteries and battery management systems,drive motors and motor controllers,understand the types and characteristics of power batteries and drive motor systems,and ultimately acquire the ability to repair electric vehicle power batteries,drive motors and control systems.However,the theoretical content of the course is abstract,the safety risk of practical training content is high,the operational precision requirement is high,and the teaching difficulty is relatively high.It is difficult to meet the needs of the course using traditional teaching models.It is urgent to carry out teaching reforms on the course according to the actual conditions of the school,and build a new and efficient teaching model to ensure teaching quality.This study takes the course "New Energy Vehicle Motor Drive System Maintenance" as the research object,and through questionnaire surveys and interviews,explores the practical problems that exist in teaching;Determine the direction of teaching mode reform through problem analysis;On the basis of constructivist teaching theory and Ausubel’s achievement motivation theory,the BOPPPS teaching concept and hybrid teaching concept are applied,and VR technology is integrated to construct a teaching mode.A "233" teaching mode is established,which includes "online offline" dual platforms,"theoretical VR practical training real vehicle maintenance" three-dimensional dimensions,and "pre test process test post test" three evaluations.Through comparative experimental research data and teacher interviews,it was fou nd that compared to traditional integrated theory and practice teaching,the teaching ba sed on the constructed "233" teaching model has significantly improved students’ learni ng effectiveness and enthusiasm.From this,it can be seen that the "233" teaching mo de has solved the teaching dilemma of "New Energy Vehicle Motor Drive System Ma intenance" course,which is difficult for teachers to teach and difficult for students to learn and do not want to learn.It is an effective and feasible teaching mode.The res ults of this study can provide guidance for the teaching mode reform of other core co urses in the field of new energy vehicles,and also provide reference for vocational sc hool teachers to carry out teaching reforms. |
