Electric automobile quick charging method for direct current charging station
An electric vehicle, fast charging technology, applied in electric vehicle charging technology, electric vehicle, vehicle energy storage and other directions, can solve the problem of unsatisfactory solution, slow electric vehicle charging speed, and no DC charging cabinet for fast charging of electric vehicles and other problems to achieve the effect of avoiding interface wear
Active Publication Date: 2018-11-13
QUZHOU UNIV
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Problems solved by technology
[0004] However, this fast charging method for electric vehicles has not been well resolved for the slow charging speed of electric vehicles, and it does not involve the use of DC charging cabinets for fast charging of electric vehicles.
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[0040] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.
[0041] A fast charging method for electric vehicles in a DC charging station, characterized in that the method comprises the following steps:
[0042] a. The background service or the host computer selects the charging model, the background identifies the battery type according to the large database, determines the charging current and voltage, the charging current range is 20A-100A, the charging voltage range is 300V-550V, and the charging program is set;
[0043] b. The charging robot inserts the charging gun 1 into the electric vehicle interface 32, and the system calculates the battery SOC according to the sampled battery voltage, analyzes the entire fast charging time, and feeds it back to the user;
[0044] c. The pre-charging circuit work...
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The invention provides an electric automobile quick charging method for a direct current charging station and belongs to the technical field of electric automobile charging. The electric automobile quick charging method for the direct current charging station comprises the following steps that a, a charging automobile model is selected on a background server or an upper computer; b, a charging robot inserts a charging gun into an electric automobile interface; and a system calculates battery SOC according to a sampled battery voltage; c, pre-charging circuit works; d, a PWM rectifier begins towork, meets that a power factor is more than 99% and guarantees that a bus voltage is at a set value; e, a PWM chopper begins to work, a charging current rapidly reaches a set value, and meanwhile, abattery voltage is monitored; and f, the system prompts that the charging is finished by using an UI interface or other modes. The electric automobile quick charging method for the direct current charging station has the advantages that the docking of the charging gun and the electric automobile interface can be conveniently, rapidly and effectively realized, and quick charging can be realized onthe premise of guaranteeing the charging safety.
Description
technical field [0001] The invention belongs to the technical field of electric vehicle charging, and relates to a fast charging method for electric vehicles at a DC charging station. Background technique [0002] Facing the current increasingly severe energy crisis, increasing demand for oil, insufficient supply and increasing car ownership, the development of the automobile industry in various countries is facing energy and environmental constraints. The development of energy-saving and environmentally friendly electric vehicles has become the sustainable development of the automobile industry. . Due to the unsoundness of the current basic charging facilities, consumers' worries and concerns about the short battery life of electric vehicles have been further exacerbated. Facing the dilemma of difficult or even impossible charging, consumers' willingness to purchase electric vehicles is very low compared to fuel vehicles. Low, consumer anxiety has become an important psych...
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Login to View More IPC IPC(8): B60L11/18
CPCY02T90/167Y02T10/70Y02T90/12Y02T10/7072Y02T90/14Y04S30/12
Inventor 黄晓刚刘丽娜刘婷娜吕梅蕾范伟周天龙周翔项勇
Owner QUZHOU UNIV