Solar trickle energy supplementing device and method for preventing power shortage of automobile storage battery

Abstract

The invention discloses a solar trickle energy supplementing device and method for preventing power shortage of an automobile storage battery. The device comprises the storage battery, a storage battery state monitoring circuit, a pre-comparison circuit, a solar cell panel, a solar charging control circuit and an anti-reverse charging circuit. The current current, voltage and temperature of the storage battery are determined through the storage battery state monitoring circuit; the current SOC value is compared with an SOC threshold value for preventing power shortage of the battery through the pre-comparison circuit, and when the current SOC value is lower than the SOC threshold value, the solar charging control circuit is started; after the solar charging control circuit is started, thesolar charging state is controlled by detecting whether the current voltage exceeds the upper charging cut-off voltage or not, if yes, charging is stopped, and if not, charging is continued; and the storage battery is prevented from reversely electrifying the solar cell panel through the anti-reverse charging circuit. The invention provides a method for monitoring, calculating and keeping the current SOC value of the storage battery to be greater than the SOC threshold value for preventing power shortage of the storage battery in a trickle energy supplementing manner, so that the power shortage of the storage battery is prevented, and the service life of the storage battery is prolonged.

Description

technical field [0001] The invention relates to the field of solar energy, in particular to a solar energy trickle energy supplementing device and a method thereof for preventing the power loss of a car battery. Background technique [0002] Parking for a long time, listening to music for a long time, forgetting to remove the key, forgetting to turn off the lights, and short trips will cause the car to have insufficient starting power and the battery will be depleted, which will lead to the embarrassing situation that the vehicle cannot be started. At present, the main methods to solve this problem are: one is to start the car with a large current in an emergency through the built-in lithium battery or external connection, and the other is to slowly charge the battery through the cigarette lighter, but this is all in the The emergency method to be taken when the power is lost so that the car cannot be started. Although the car can be started, it will cause damage to the batt...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a solar energy trickle power supply device and its method to prevent battery power loss in automobiles, so as to solve the problems of shortened battery life and battery damage caused by long-term battery power loss

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