Safety protection method for electric vehicle charging facility

Abstract

The invention discloses a safety protection method for an electric vehicle charging facility. The method mainly researches leakage protection, input over / under-voltage protection, input short circuit and overload protection, output over-voltage protection and the like, provides an electrical safety protection improvement scheme for alternating current and direct current charging equipment on the basis, and constructs an alternating current and direct current charging equipment fault failure model based on a fault tree by researching an electrical safety fault list of the alternating current and direct current charging equipment. According to an electrical safety fault list of alternating current and direct current charging equipment, the electrical safety protection qualified rate test method for interconnection-oriented high-safety alternating current charging equipment, interconnection-oriented high-safety direct current charging equipment and liquid-cooled direct current charging equipment with a wide environment adaptation range is researched. The invention provides an electrical safety protection test data processing and judging method. The method provides reference for safety protection of electric vehicle charging facilities.

Description

technical field [0001] The invention relates to a safety protection method for electric vehicle charging facilities, and belongs to the technical field of construction of electric vehicle charging facilities. Background technique [0002] The world today is facing a global energy crisis and increasingly severe pressure on environmental protection. As the lifeline of the world economy, transportation is facing the dual challenges of high energy consumption and high environmental pollution. In response to this problem, countries around the world have issued and implemented their own electric vehicle strategies. For our country, vigorously developing and promoting electric vehicles is an important way to realize our energy strategy and sustainable development strategy. With the continuous and rapid development of my country's economy and the acceleration of urbanization, the demand for automobiles will continue to grow for a long period of time in the future. Accelerating the...

AI Technical Summary

Problems solved by technology

[0004] With the popularization and application of electric vehicles and charging facilities in our country, a series of problems are gradually exposed, such as the imperfect electrical safety protection measures of AC and DC charging equipment, causing many injuries and accidents of damage to charging equipment and electric vehicles; the degree of intelligence of charging equipment Low, the charging success rate is low, which affects the user experience and increases the operation and maintenance cost of charging facilities; only the charging demand of the power battery is considered during the charging process, and the health status of the charging equipment itself and the state of the power grid are not fully considered, resulting in various safety hazards, etc.

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