Method for automatic recovery of electric vehicle charging by monitoring voltage
A technology for electric vehicles and on-board chargers, applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problem that vehicles cannot automatically resume charging
Active Publication Date: 2018-08-14
CHINA FIRST AUTOMOBILE
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Problems solved by technology
[0003] When using the existing electric vehicle charging method to carry out AC charging for electric vehicles, if the AC power supply is abnormal during the charging process, such as: power failure, undervoltage, etc., the vehicle control device usually controls the vehicle to stop charging and power off to sleep. When the AC power supply is restored After normal operation, if the user does not take certain actions, such as reconnecting the charging cable, the vehicle usually cannot automatically resume charging
[0004] At present, there is no patent in China that discloses a method for realizing the automatic recovery of electric vehicle charging without user operation after the abnormal power supply is eliminated, so as to solve the above problems
Method used
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Embodiment 1
[0019] This embodiment provides a method for realizing the automatic recovery of electric vehicle charging by monitoring the voltage, which can be used figure 1 In it, the schematic diagram of the control and guidance circuit conforming to the charging mode 3 connection method B recommended in GB / T 18487.1-2015, including power supply equipment, power supply interface, vehicle interface and electric vehicles. On the basis of GB / T 18487.1-2015, in the electric vehicle that controls the steering circuit, the first voltage monitoring unit is integrated in the on-board charger of the electric vehicle, and the first voltage monitoring unit is integrated in the vehicle control device of the electric vehicle. Two voltage monitoring units.
[0020] The first voltage monitoring unit can work when the on-board charger is in a dormant state; its voltage input terminal is connected to the L terminal and N terminal of the vehicle socket, and can monitor the AC power supply voltage at the i...
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The invention discloses a method for realizing automatic recovery of charging of an electric automobile through voltage monitoring. Under the dormant state, the electric automobile carries out voltage monitoring on an L end, an N end and a CP end of an automobile socket of an alternating-current charging interface and judges whether normal power supply is recovered or not according to a voltage monitoring result; if normal power supply is recovered, the automobile immediately and automatically recovers alternating-current charging; otherwise, the automobile continually keeps in the dormant state. According to the method disclosed by the invention, extra operation of a user is not needed after abnormal power supply is eliminated and the automobile can automatically recover charging; and the problem that the electric automobile cannot normally finish charging caused by the fact that the power supply of an alternating-current power grid is abnormal is avoided. The method disclosed by the invention is applicable to a charging mode 1, a charging mode 2 and a charging mode 3 defined in GB / T18487.1-2015.
Description
technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a method for realizing automatic recovery of electric vehicle charging by monitoring voltage. Background technique [0002] The existing electric vehicle AC charging technology usually adopts the control guide circuit and control principle recommended in GB / T 18487.1-2015. Usually, the user connects the vehicle plug of the charging connection device to the vehicle AC charging socket, and the power supply of the charging connection device The plug is connected to the power supply socket of the power supply equipment, and the vehicle control device automatically starts charging after confirming that the vehicle is ready for charging. When the charging is completed or the conditions for continuing charging cannot be met due to other reasons, the vehicle control device controls the vehicle to stop charging. [0003] When using the existing electric vehicle charging ...
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IPC IPC(8): B60L11/18H02J7/00
CPCB60L53/60B60L58/12H02J7/0069Y02T10/70Y02T10/7072Y02T90/12
Inventor 姜瑞张天强曲振宁栗海兵
Owner CHINA FIRST AUTOMOBILE