Guidance circuit for electric vehicle alternating-current charging interface
A technology of guiding circuit and AC charging, applied in electric vehicle charging technology, electric vehicle, battery circuit device, etc., can solve the problems of complex circuit structure and high implementation cost, and achieve high safety and reliability, low cost, and overall structural design. clever effect
Pending Publication Date: 2019-03-05
YANFENG VISTEON ELECTRONICS TECH NANJING
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Problems solved by technology
According to the national standard, the electric vehicle charging connection device with a working current exceeding 16A should be designed with a control and guidance circuit. However, the control and guidance circuit of the existing AC charging equipment mainly uses operational amplifiers to realize circuit signal conversion. The circuit structure is complex and the implementation cost is relatively high. high
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[0019] In order to deepen the understanding and recognition of the present invention, the present invention will be further described and introduced below in conjunction with the accompanying drawings.
[0020] It should be noted that similar numbers and letters denote similar items in the following figures, and once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. In the description of the present invention, the terms "first", "second", "third", "fourth", "fifth" and so on are only used for distinguishing descriptions, and should not be interpreted as merely or to imply relative importance.
[0021] In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be directly connected or indirectly connected through an intermediary, and it can be an internal connection between two components...
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The invention relates to a guidance circuit for an electric vehicle alternating-current charging interface. The guidance circuit comprises a microcontroller, a resistance detection circuit, a power-oncontrol circuit, a PWM signal detection circuit and a voltage sampling circuit; an input end of the resistance detection circuit is connected to a CC network arranged on an alternating-current charging device, and an output end of the resistance detection circuit is connected to an ADC1 pin of the microcontroller; an input end of the power-on control circuit is connected to a CP-EN pin of the microcontroller, and an output end of the power-on control circuit is connected to a CP network arranged on the alternating-current charging device; an input end of the PWM signal detection circuit is connected to the CP network, and an output end of the PWM signal detection circuit is connected to an INT pin and a PWM-IN pin of the microcontroller; and an input end of the voltage sampling circuit isconnected to the CP network, and an output end of the voltage sampling circuit is connected to an ADC2 pin of the microcontroller. According to the guidance circuit, by adopting a rectifier diode, anMOSFET tube, a resistance and a capacitor, an external circuit of the microcontroller is implemented; and the cost is lower than the use of an operational amplifier, and the safety and reliability are high.
Description
technical field [0001] The invention relates to the technical field of battery management systems for electric vehicles, in particular to a guide circuit for an AC charging interface of an electric vehicle. Background technique [0002] With the increasingly serious environmental pollution and in order to reduce the dependence on non-renewable energy, people gradually develop new energy power devices, such as electric vehicles. At present, the power battery is used as the power source of the electric vehicle to provide power for the vehicle. When the power battery is exhausted, it needs to be charged by a charging device. According to the national standard, the electric vehicle charging connection device with a working current exceeding 16A should be designed with a control and guidance circuit. However, the control and guidance circuit of the existing AC charging equipment mainly uses operational amplifiers to realize circuit signal conversion. The circuit structure is comp...
Claims
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Login to View More IPC IPC(8): H02J7/00B60L53/14
CPCH02J7/007Y02T10/7072Y02T10/70Y02T90/14
Inventor 张守杰
Owner YANFENG VISTEON ELECTRONICS TECH NANJING