Charging device, method for detecting relay adhesion, and charging method for electric vehicle
A charging device and relay technology, applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of high cost and complicated circuit, and achieve the effect of cost saving and simple circuit
Active Publication Date: 2019-09-06
XIAN LINCHR NEW ENERGY TECH CO LTD
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a charging device, a relay adhesion detection method and a charging method for electric vehicles, which can save costs and have a simple circuit
Method used
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Embodiment Construction
[0029] figure 1 It is a structural diagram of Embodiment 1 of a charging system composed of a charging device and an electric vehicle according to the present invention. The charging device 10 of this embodiment is an AC charger or an AC charging pile, which can charge an electric vehicle 20 . Moreover, the charging device 10 includes at least one charging gun and a charging path connected to each charging gun. Only one charging gun 101 and a charging path connected to the charging gun 101 are shown in the figure, and the charging gun is used below as 101 and a charging path connected to the charging gun 101 as an example for description. It should be understood that in practical applications, one charging device can simultaneously charge multiple electric vehicles through multiple charging guns. Correspondingly, the charging device can include multiple charging guns and multiple charging paths, wherein each charging gun can Each charging path corresponds to each other, and e...
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The invention relates to a charging device, a method for detecting relay adhesion and a charging method for an electric vehicle. In the charging device, the detection circuit includes a rectifier module, an optocoupler, a first diode, a pull-up resistor and a control module, wherein, The input terminal of the rectifier module is connected to the first terminal of the charging gun, the output terminal of the rectifier module is connected to the positive pole of the light-emitting diode in the optocoupler, the negative pole of the light-emitting diode in the optocoupler is connected to the second terminal of the charging gun, and the positive pole of the first diode is connected to At the second end of the charging gun, the cathode of the first diode is connected to the anode of the light-emitting diode in the optocoupler, the collector of the triode in the optocoupler is connected to a high level through a pull-up resistor, and the emitter of the triode in the optocoupler is grounded; and, After the control module controls the current relay to be detected to be disconnected, it controls another relay to close, and judges whether the current relay is stuck according to the voltage signal of the collector of the triode in the optocoupler. Implementing the technical scheme of the invention saves cost and has simple circuits.
Description
technical field [0001] The invention relates to the technical field of charging, in particular to a charging device, a relay adhesion detection method and a charging method for an electric vehicle. Background technique [0002] In the charging system, there are currently two commonly used relay adhesion detection methods: one is the method with its own feedback contact, that is, the relay with feedback contact is used in the circuit, and the adhesion state of the relay is detected through the feedback signal; the other One is a method without a feedback contact, that is, an ordinary relay is used in the circuit, and the feedback load is connected in series in the load circuit to detect whether the relay is stuck. However, if a relay with a feedback contact is used in the circuit, the cost of the charging system is higher due to the higher cost of the relay with a feedback contact; The feedback load is connected in series, so the complexity of the circuit is increased. Con...
Claims
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IPC IPC(8): B60L53/14B60L53/31B60L53/66
CPCB60L53/14B60L53/31B60L53/60Y02T10/70Y02T10/7072Y02T90/12Y02T90/14Y02T90/16
Inventor 雒建华袁庆民茹永刚
Owner XIAN LINCHR NEW ENERGY TECH CO LTD