Passive automatic tracking device for solar photovoltaic panel to track solar azimuth

Abstract

The invention discloses a passive automatic tracking device for a solar photovoltaic panel to track the solar azimuth. The passive automatic tracking device comprises a supporting plate fixed on the bottom of the solar photovoltaic panel and a rotating shaft fixedly connected with the supporting plate; the bottom of the rotating shaft is in shaft connection with a bottom rod; the outer wall of the bottom rod is horizontally and fixedly connected with a support arm; the tracking device further comprises a hydraulic cylinder and a gas storage tank which is arranged on the outer side of the solar photovoltaic panel; the tail part of the hydraulic cylinder is hinged to the bottom of the supporting plate; a piston rod of the hydraulic cylinder is hinged to the support arm; the bottom of the gas storage tank is communicated with an oil hole of the hydraulic cylinder through a connecting pipe; the top of the gas storage tank is provided with an air pressure adjustment nozzle and a sealing cover; the lower part in the gas storage tank, the connecting pipe and the hydraulic cylinder are filled with hydraulic oil; the upper part in the gas storage tank is filled with inert gas. The piston rod of the hydraulic cylinder stretches out and retracts back by the characteristic of expansion caused by heat and contraction caused by cold of the inert gas in the gas storage tank, thus, the solar photovoltaic panel is driven to track the solar azimuth, no power supply is needed, the structure is simple, the cost is low, and the passive automatic tracking device is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the field of solar azimuth tracking, in particular to a solar photovoltaic panel azimuth passive automatic tracking device. Background technique [0002] As we all know, solar energy has become more and more known as a clean energy source. Solar photovoltaic panels are usually used to receive and convert solar energy. When the sunlight is vertically irradiated on the photovoltaic panel, the maximum utilization rate can be achieved. However, due to the rotation and revolution of the earth, the angle at which the sun shines on the ground will change with time. At present, a control mechanism is usually installed on the solar photovoltaic panel to control the rotation of the solar photovoltaic panel to track the azimuth of the sun. purpose; this control mechanism usually includes a single-chip microcomputer and a stepping motor, and the stepping motor is controlled by the single-chip microcomputer to drive the rotation of the sola...

AI Technical Summary

Problems solved by technology

[0002] As we all know, solar energy has become more and more known as a clean energy source. Solar photovoltaic panels are usually used to receive and convert solar energy. When the sunlight is vertically irradiated on the photovoltaic panel, the maximum utilization rate can be achieved. However, due to the rotation and revolution of the earth, the angle at which the sun shines on the ground will change with time. At present, a control mechanism is usually installed on the solar photovoltaic panel to control the rotation of the solar photovoltaic panel to track the azimuth of the sun. purpose; this control mechanism usually includes a single-chip microcomputer and a stepping motor, and the stepping motor is controlled by the single-chip microcomputer to drive the rotation of the solar photovoltaic panel to track the azimuth of the sun; but this kind of control mechanism is often expensive, which increases the application promotion cost, and additional power supply is required, if special circumstances such as power outages occur, this mechanism cannot be used

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