Battery electric quantity detection circuit, electric vehicle control board and portable electric vehicle

Abstract

The present invention is suitable for the electronic field, and provides a battery electric quantity detection circuit, an electric vehicle control board and a portable electric vehicle. The circuit comprises a switch unit which is used for conducting when the electric vehicle is started and of which the control end is connected with a main control chip of the electric vehicle and the input end is connected with a battery; an electric quantity detection unit which is used for detecting the electric quantity of the battery when the switch unit conducts and generating an electric quantity detection signal and of which the input end is connected with the output end of the switch unit and the output end is connected with an electric quantity display device. According to the present invention, when the electric vehicle does not work and is idle, the switch unit cuts off the connection of the electric quantity detection unit and the battery to stop detecting the electric quantity of the battery, so that the electric quantity loss when the electric vehicle is idle is reduced, the electric quantity of the battery is not exhausted easily when the vehicle is stored for a long time and does not work, and the service life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the field of electronics, and in particular relates to a battery power detection circuit, an electric vehicle control panel and a portable electric vehicle. Background technique [0002] With the development of new energy, electric vehicles have gradually become a daily means of transportation. Some lightweight and short-duration two-wheeled vehicles or balance vehicles are more playable, and they have also become one of people's leisure tools. First, in these recreational electric vehicles, due to the light body and small structure, the battery capacity is usually smaller than that of electric vehicles for transportation, generally between 4Ah and 15Ah, in order to better detect the state of the battery and avoid the embarrassment of running out of power for short-distance travel , The circuit part of the control board usually has a battery detection circuit to detect the battery power at any time to prompt the user whether to...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a battery power detection circuit, aiming to solve the problem that the existing battery detection circuit consumes too much power when the vehicle is not working, which affects the service life of the battery

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