Direct-current power taking system based on electric vehicle

Abstract

The invention discloses a direct-current power taking system based on an electric vehicle. The system comprises a direct-current gun which is connected with a direct-current charging port of the vehicle, and a single-chip microcomputer. One input end of the single-chip microcomputer is connected with the direct-current gun, and the other input end of the single-chip microcomputer is connected witha photovoltaic circuit; the output end of the single-chip microcomputer is connected with a voltage-stabilizing and current-stabilizing circuit through a relay; the system further comprises a DC / AC high-frequency inverter; the input end of the DC / AC high-frequency inverter is connected with the output end of a voltage-stabilizing and current-stabilizing circuit, and the output end of the DC / AC high-frequency inverter is connected with a transformer, so that the output end outputs alternating current; the system further comprises a sampling circuit which comprises an input sampling circuit andan output sampling circuit; the output end of the direct-current gun and the output end of the photovoltaic circuit are both connected with the input sampling circuit, and the output sampling circuitis connected with the output end of the transformer; the system further comprises a battery management module which is connected with the input sampling circuit and the output sampling circuit and isin bidirectional connection with the single-chip microcomputer. High-power alternating current can be obtained from the electric vehicle or the photovoltaic circuit, and the power utilization requirement of high-power electric appliances is met in the outdoor environment.

Description

technical field [0001] The invention relates to the field of charging and discharging electric vehicles, in particular to a DC power-taking system based on electric vehicles. Background technique [0002] At present, the popularity of electric vehicles is getting higher and higher; outdoors, users can use the starting battery of electric vehicles as a power source to provide electric energy for other power products, and some high-power electricity can be obtained from the starter by clamping the battery with alligator clips. The power is taken from the battery; and some low-power power can be used to supply power to the product through the USB interface in the electric vehicle or the adapter connected to the cigarette lighter interface. [0003] However, there are following defects in the existing power-taking method: [0004] (1) When using alligator clips to clamp the battery, the hood of the car needs to be opened, and the operation is relatively complicated; and for use...

AI Technical Summary

Problems solved by technology

[0004] (1) When using alligator clips to clamp the battery, the hood of the car needs to be opened, and the operation is relatively complicated; and for users who are not familiar with the structure of the car body, there may be inaccurate clamping positions due to ignorance of the position of the battery, resulting in power failure phenomenon; in addition, users who take power through this method may have electric shock accidents due to accidentally touching the clip, which has certain potential safety hazards;

[0005] (2) Using the USB interface or cigarette lighter interface in the car to take power cannot output high-power voltage, and high-power electrical appliances cannot be used

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