AC detection circuit of bidirectional vehicle-mounted charger and electromobile
A technology of on-board charger and detection circuit, which is applied in the direction of measuring current/voltage, measuring only current, measuring electrical variables, etc. It can solve the problems of software and hardware false protection and shutdown, and achieve the effect of improving sampling accuracy and enhancing anti-interference ability
Inactive Publication Date: 2017-07-25
BEIJING ELECTRIC VEHICLE
View PDF7 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In order to overcome the technical problem in the prior art that the connector pins of the alternating current sampling circuit are suspended in the air or disconnected with a floating voltage, the software and hardware are mistakenly protected and turned off, the present invention provides a two-way vehicle charger alternating current detection circuit and electric vehicles
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0034] refer to figure 1 As shown, the present invention provides a bidirectional vehicle charger alternating current detection circuit, including a power drive side circuit 1 and a low-voltage control side circuit 3 connected through a connector, and the power drive side circuit 1 includes: a circuit for collecting detection signals Detection circuit and voltage follower U1; the detection circuit outputs the detection signal through a detection signal line 10, the detection signal line 10 is connected to the same input terminal of the voltage follower U1, and the reverse input terminal of the voltage follower U1 is connected to the voltage The output end of the follower U1, the output end of the voltage follower U1 is connected to the corresponding...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an AC detection circuit of a bidirectional vehicle-mounted charger and an electromobile. According to the AC detection circuit of the bidirectional vehicle-mounted charger, a power driving side circuit comprises a detection circuit and a voltage follower, the detection circuit outputs a detection signal via a detection signal line, the detection signal line is connected to the non-inverting input end of the voltage follower, the inverting input end of the voltage follower is connected to the output end of the voltage follower, and the output end of the voltage follower is connected to a corresponding pin of a connector; a low voltage control side circuit comprises a sampling signal line, and is connected to a corresponding pin; and one end of a pull-down resistor is connected to the sampling signal line, and the other end of the pull-down resistor is grounded. Via the AC detection circuit of the bidirectional vehicle-mounted charger, the problem that a possible floating voltage in an AC sampled object power drive board circuit and a sampling object low voltage control panel circuit causes software and hardware protection mistake after that a socket connector pin is suspended in the air or disconnected is solved, the anti-interference capability is enhanced, and the sampling precision is improved.
Description
technical field [0001] The invention relates to the field of electric vehicle manufacturing, in particular to a bidirectional vehicle charger alternating current detection circuit and the electric vehicle. Background technique [0002] In the circuit design of a two-way on-board charger, it is generally required to detect and report various input (output) current (voltage) values in the circuit to monitor the working status of the circuit and protect circuit components, related equipment and personal safety. [0003] In the two-way on-board charger circuit design architecture in which the power drive and low-voltage control boards are separated, the low-voltage control board is generally responsible for vehicle communication interaction, power drive circuit control and signal sampling, current overcurrent protection and other functions. The power drive board and low-voltage control The boards are connected by various connectors. When the power drive board adopts circuit s...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/0092
Inventor 陈泓泽鲁卫申肖胜然
Owner BEIJING ELECTRIC VEHICLE