A protection method for safe charging of electric vehicles
An electric vehicle and safety technology, applied in electric vehicle charging technology, electric vehicles, battery/fuel cell control devices, etc., can solve the problems of unsafe charging, safety, hidden dangers, etc., to ensure safe charging and correct power supply phase sequence , the effect of avoiding safety hazards
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[0025] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0026] A protection method for safe charging of electric vehicles, such as figure 1 As shown, it includes over-current protection, over-voltage and under-voltage protection, over-temperature protection, ungrounded and fire-neutral wire wrong-phase protection, and leakage protection for AC charging devices for electric vehicles, specifically:
[0027] A) Over-current protection: Determine whether to protect according to the duration of the over-current state, which can avoid over-protection caused by peak current or interference current;
[0028] B) Overvoltage and undervoltage protection: determine whether to protect according to the duration of t...
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