Multiple-working-condition automatic testing experiment system of electric vehicle charging equipment

Abstract

The invention discloses a multiple-working-condition automatic testing experiment system of electric vehicle charging equipment, belonging to the field of a new energy vehicle. The system is formed by an industrial computer and software system, a voltage and frequency controlled AC power supply unit, a load unit, a high precision measurement unit, temperature and humidity adjusting equipment, and a protection and control unit. The system is used for testing an electric vehicle vehicle-borne charger and a non vehicle-borne charger. According to the system, grid voltage and frequency static deviation, voltage and frequency fluctuation, a power battery pack with different rated parameters and different temperature and humidity conditions can be simulated to test the communication performance, output stability, output accuracy, protection limit characteristic, temperature rise characteristic, current harmonic wave, voltage fluctuation and flicker, three-phase unbalance, power factor, efficiency and abnormality response ability of experiment charging equipment, certain data support is provided for the research of electric vehicle charging equipment technical specifications, the whole process automatic control of the testing is realized, and the testing efficiency is greatly improved.

Description

Technical field [0001] The invention belongs to the field of new energy vehicles, and in particular relates to an automated test and test system for electric vehicle charging equipment with multiple operating conditions. Background technique [0002] Facing the strong development momentum of electric vehicles, the demand for electric vehicle charging equipment, which is indispensable in the development of electric vehicles, will continue to increase. The performance of the charging equipment will have a great impact on the performance of the power battery, the safety of charging, the cost of charging, and the power quality of the power grid. [0003] The current charging equipment for electric vehicles mainly includes: on-board chargers and off-board chargers. On-board chargers are generally low-power charging equipment with single-phase power supply, and off-board chargers are generally high-power charging equipment with three-phase power supply. Because the types and parameters...

AI Technical Summary

Problems solved by technology

Since the types and parameters of electric vehicle charging equipment are not uniform, and it is necessary to set up various engineering conditions for the test, such as the impact of power quality problems on the input side, the impact of load weight and changes on the output side, and the impact of temperature and humidity, it is used for charging. Devices are comprehensively and scientifically tested, so testing them is complex

If the method of manual testing is not only time-consuming and labor-intensive but also prone to errors, it is necessary to realize automated testing of charging equipment and improve testing efficiency

At present, my country's research on the testing of electric vehicle charging equipment is still relatively backward. Regarding the relevant technical conditions and requirements for electric vehicle charging facilities, national standards have not yet been issued, and research in this area still needs the support of experimental data.

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