Development of Comprehensive Testing and Evaluation Technology for Electric Vehicles

1. U.S. Electric Vehicle Testing and Evaluation (1) American Advanced Vehicle Testing Project In the United States, in order to build a bridge between the Ru0026D and industrialization of advanced vehicle technologies such as electric vehicles, the Department of Energy (DOE) free vehicle technology Under the support of the project (Freedom CAR and Vehicle Technologies Program), the Advanced Vehicle Testing Activity (AVTA) project (Advanced Vehicle Testing Activity, referred to as AVTA) was carried out, aiming to provide national-level, comprehensive and fair advanced vehicle technology testing and evaluation services. It is the most important country-led testing and evaluation activity in the United States, including the testing and evaluation of light vehicles, advanced powertrains, batteries and charging infrastructure. AVTA has established a relatively complete test and evaluation system and procedures for electric vehicles, including baseline performance testing, accelerated reliability testing, and fleet testing. The United States, through the development of the AVTA project, improves the construction of testing and evaluation capabilities, establishes relevant technical specifications for testing and evaluation, and promotes the formulation of related standards for electric vehicles; provides test technical support for enterprise product development, thereby accelerating the commercialization and industrialization of electric vehicles; To provide enterprises and individuals purchasing electric vehicles with real electric vehicle performance so that they can make scientific purchasing decisions; at the same time, it also provides a basis for the government to formulate policies to promote the development of electric vehicles. (2) SAE Technical Standards for Electric Vehicles Since the Society of Motor Vehicle Engineers (SAE) issued its first standard on electromagnetic radiation in 1990, it has issued 51 technical standards for various types of electric vehicles, including the terminology of various types of electric vehicles. And safety technical requirements, the test and measurement methods of vehicle power, economy and emission, electromagnetic field intensity, various test procedures for batteries and battery modules, and high-voltage cables, wiring harnesses, components, and connectors for electric vehicles Technical requirements and test methods. The 'SAE Fuel Cell Standards Committee' established in 2001 has issued 7 standards for hydrogen fuel quality requirements, hydrogen fuel cell system performance testing and recovery, and hydrogen fuel filling and connecting devices. With the continuous advancement of electric vehicle technology and the emergence of various new types of electric vehicles (such as extended-range electric vehicles, plug-in hybrid electric vehicles), SAE is also constantly revising and improving its standard system, such as SAE J 1711. Test Method for Emission and Energy Consumption of Light-Duty Hybrid Electric Vehicles.　　　　2. European electric vehicle testing and evaluation　　 European regional organizations engaged in the standardization of electric vehicles mainly include: European Committee for Standardization (CEN), European Committee for Electrotechnical Standardization (CENELEC), United Nations Economic Commission for Europe (ECE), etc. CEN/TC301 was established in 1992, and its main scope of work is to be responsible for the standardization of pure electric vehicles and hybrid vehicles, mainly to solve the standard problems required for these two types of vehicles to drive on the road. In 1995, CEN/TC301 issued recommendations for electric vehicle braking, and proposed different design schemes for regenerative braking systems. The standards compiled later mainly include vehicle structural safety requirements and failure and protection against electric shock, and vehicle performance measurement ( Vehicle speed, acceleration performance, climbing performance, energy consumption and driving range, hybrid vehicle emissions, etc.), vehicle power requirements (charging station, on-board charger noise, etc.). 3. Japan Electric Vehicle Testing and Evaluation Japan is mainly engaged in the standardization of electric vehicles by the Japan Electric Vehicle Association (JEVA). The electric vehicle standards (JEVS) formulated are relatively systematic and involve the electric vehicles themselves, test methods, and motors/controllers. , Storage battery and charging system, etc. The electric vehicle standards that have been released include 13 vehicles, 2 motors and controllers, 7 batteries, and 5 chargers. JEVA is working on the following two aspects: the first is the evaluation method of the energy efficiency of electric vehicles and their parts, including the energy efficiency evaluation and terminology of the charger; the other is the energy efficiency evaluation method of the hybrid vehicle.　　

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