Power management system

Abstract

The invention discloses a power management system which comprises a light projector connected with external light, a receiving sensor connected with the light projector, a solar cell connected with the receiving sensor, a control circuit connected with the solar cell and a load connected with the control circuit. The control circuit comprises a control chip with at least three ports and current paths connected to the ports of the control chip and corresponding to the ports, the control chip is used for detecting the magnitude of current to judge the output power of the solar cell, the current paths are used for modulating the output current of the solar cell, and when external light changes, the output power of the solar cell is adjusted. When the current output by the sensor is changed and the current output by the solar cell is changed, the control circuit collects a change signal of the current output by the solar cell, rectifies the current and provides stable current for the load. The device is simple in structure and wide in application range, and ensures that the output power of the solar cell is controlled in a rapid and effective manner.

Description

technical field [0001] The invention belongs to the technical field of power management, and in particular relates to a power management system. Background technique [0002] Solar energy is a clean, non-polluting, inexhaustible and inexhaustible energy source. Solar energy has always been the focus of attention when solving the pollution and shortage problems faced by current petrochemical energy sources. Since solar cells can directly convert light energy into electrical energy, solar cells have become one of the most important research topics in the industry. [0003] However, since the solar cell is greatly affected by the external light source, when the intensity of the external light source changes, the output power of the solar cell will also be affected, resulting in unstable output power and affecting the load. Usually, the relationship between light intensity and battery output power is obtained through dynamic tracking, which has the characteristics of long time ...

AI Technical Summary

Problems solved by technology

[0003] However, because the solar cell is greatly affected by the external light source, when the intensity of the external light source changes, the output power of the solar cell will also be affected, resulting in unstable output power , the load is affected by

Usually, the relationship between light intensity and battery output power is obtained through dynamic tracking, which has the characteristics of long time consumption and slow response. At the same time, due to changes in light intensity, the control signal changes, and ultimately the solar battery cannot output at the highest power.

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