CIGS photovoltaic structure of solar street light

Abstract

The present invention provides a CIGS photovoltaic mechanism for a solar street light; the CIGS photovoltaic panel, a mounting frame, a sleeve and a power supply assembly are provided, wherein the CIGS photovoltaic panel is fixed on the top of the mounting frame, and the sleeve is fixed on the bottom of the mounting frame; the inner wall of the power supply box of the power supply assembly is paved with a heat preservation layer, the battery is arranged in the power supply box, air inlets and air outlets are provided on both sides of the power supply box, two fans are respectively installed at the air inlets and air outlets, a temperature sensor is installed in the power supply box, and a semiconductor cooling sheet extends into the inner cavity of the power supply box. The power supply assembly detects the temperature of the battery in the power supply box through a built-in temperature sensor, and when the temperature drops below the normal use temperature, the heat generated by the semiconductor cooling sheet is controlled to provide the temperature of the battery; when the temperature rises, the excess heat can be discharged through the reserved vents by the fan, or the temperature can be reduced by the semiconductor cooling sheet, and the power supply assembly automatically adjusts the temperature of the battery itself to keep it at a suitable temperature.

Description

Technical Field

[0001] The invention relates to a CIGS photovoltaic mechanism of a solar street lamp. Background Art

[0002] CIGS photovoltaic panels are mainly composed of Cu (copper), In (indium), Ga (gallium), and Se (selenium). They have strong light absorption ability, good power generation stability, high conversion efficiency, and good weak light effect. Therefore, they can generate electricity for a long time during the day, with high power generation, low cost, and short cycle. Compared with existing crystalline silicon photovoltaic panels, they have greatly improved in terms of cost, efficiency, and power generation. However, the temperature of the battery of CIGS photovoltaic panel solar street lights will rise immediately in hot weather, which will cause the efficiency and life of the battery to decrease. In addition, the current is unstable, which is easy to damage the LED light source. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a CIGS photovoltaic mechanism of a solar street lamp which can improve power generation and efficiency.

[0004] In order to solve the above technical problems, the present invention provides a CIGS photovoltaic mechanism for a solar street lamp;

[0005] It includes a CIGS photovoltaic panel, a mounting frame, a sleeve and a power supply assembly, wherein the CIGS photovoltaic panel is fixed on the upper side of the mounting frame, and the sleeve is fixed on the lower side of the mounting frame;

[0006] The power supply assembly includes a power supply box, an insulation layer, a temperature sensor, at least one semiconductor cooling sheet, at least one battery and two fans. The inner wall of the power supply box is paved with an insulation layer, and the battery is arranged in the internal cavity of the power supply box. Air inlets and air outlets are respectively provided on both sides of the power supply box. The air inlets and air outlets respectively penetrate the side walls of the power supply box and the insulation layer. The two fans are respectively installed at the air inlet and the air outlet of the power supply box. The temperature sensor is installed in the internal cavity of the power supply box, and the semiconductor cooling sheet extends into the internal cavity of the power supply box.

[0007] With this structure, the power supply assembly detects the temperature of the power box battery through the built-in temperature sensor. When the temperature drops below the normal operating temperature, the heat generated by the semiconductor cooling sheet is controlled to provide the battery temperature; when the temperature rises, the excess heat can be discharged through the reserved vents by the fan, or the semiconductor cooling sheet can be used to cool down. The power supply assembly automatically adjusts the temperature of the battery itself, whether in the hot summer or the cold winter, the temperature can be adjusted to keep it at a suitable temperature. The stability of battery efficiency is further improved.

[0008] In order to more clearly understand the technical content of the present invention, the CIGS photovoltaic mechanism of the present solar street lamp is referred to as the present photovoltaic mechanism hereinafter.

[0009] As a further improvement, two adjacent CIGS photovoltaic panel brackets of the photovoltaic mechanism are fixedly connected to the mounting frame via C-shaped steel. With such a structure, the C-shaped steel can better cooperate with the bracket of the CIGS photovoltaic panel to achieve better fixation of the two.

[0010] As a further improvement, the C-shaped steel of the photovoltaic mechanism is made of stainless steel or galvanized steel; after adopting such a structure, the material of the C-shaped steel increases its service life.

[0011] As a further improvement, a constant current source controller is installed in the circuit between the CIGS photovoltaic panel of the photovoltaic mechanism and the LED light source of the solar street lamp; after adopting such a structure, the constant current source controller ensures that the LED light source always maintains a constant current during use, thereby protecting the LED light source and greatly improving its service life.

[0012] As a further improvement, the sleeve of the photovoltaic mechanism is mounted on the upper end of the lamp post, and there is an inclination angle between the axis of the sleeve and the end surface of the mounting frame; with such a structure, the sleeve can realize an inclined installation of the CIGS photovoltaic panel.

[0013] As a further improvement, the power box of the power assembly of the photovoltaic mechanism is fixedly connected to the back of the CIGS photovoltaic panel.

[0014] As a further improvement, the thermal insulation layer of the power supply component of the photovoltaic mechanism is made of thermal insulation cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of an embodiment of the photovoltaic mechanism.

[0016] Figure 2 yes Figure 1 main view.

[0017] Figure 3 yes Figure 2 Enlarged view of part A.

[0018] Figure 4 It is a stereoscopic diagram of the mounting frame and sleeve of the photovoltaic mechanism embodiment.

[0019] Figure 5 It is a cross-sectional view of a top view of the power supply assembly of the photovoltaic mechanism embodiment. DETAILED DESCRIPTION

[0020] like Figures 1 to 5 As shown (for the sake of clarity, Figures 1 to 4 The wires connecting the CIGS photovoltaic panel 1 and the power supply assembly 3 and the installation box 22 are not shown).

[0021] The photovoltaic mechanism comprises a mounting frame 2 , a sleeve 4 , a power supply assembly 3 and two CIGS photovoltaic panels 1 .

[0022] Two CIGS photovoltaic panels 1 are arranged side by side in sequence, and a bracket 11 is provided on the back of each photovoltaic panel 1. The mounting frame 2 is formed by welding a plurality of metal square tubes. The CIGS photovoltaic panel 1 bracket 11 is fixed to the mounting frame 2 by bolts. The brackets 11 of two adjacent CIGS photovoltaic panels 1 are fixed to the mounting frame 2 by C-shaped steel 21 and bolts. The C-shaped steel 21 is made of stainless steel (the C-shaped steel 21 can also achieve the same technical effect by using galvanized steel). The CIGS photovoltaic panel 1 is located on the upper side of the mounting frame 2.

[0023] The power supply assembly 3 includes a power supply box 31, a thermal insulation layer 32, a temperature sensor 35, two semiconductor cooling sheets 36, three batteries 33 and two fans 34. The inner wall of the power supply box 31 is paved with a thermal insulation layer 32, and the thermal insulation layer 32 is made of thermal insulation cotton. The three batteries 33 are arranged in series in the inner cavity 31a of the power supply box 31. The power supply box 31 is provided with an air inlet 31b and an air outlet 31c on both sides. The air inlet 31b and the air outlet 31c penetrate the side wall of the power supply box 31 and the thermal insulation layer 32 respectively. The side wall of the power supply box 31 also has a wiring hole for the wire to enter, and the wiring hole also penetrates the side wall of the power supply box 31 and the thermal insulation layer 32. The temperature layer 32, the air inlet 31b and the air outlet 31c are connected to the internal cavity 31a of the power box 31 and the external space respectively, two fans 34 are respectively installed at the air inlet 31b and the air outlet 31c of the power box 31, the temperature sensor 35 is installed in the internal cavity 31a of the power box 31, and two semiconductor cooling plates 36 extend into the internal cavity 31a of the power box 31 from both sides respectively. The fans 34 and semiconductor cooling plates 36 of the power supply assembly 3 are also driven by the battery 33. The power box 31 is fixed to the lower side of the mounting frame 2 as a whole by bolts, and the power box 31 is on the back of the CIGS photovoltaic panel 1.

[0024] A built-in temperature sensor 35 is used to detect the temperature of the battery 33 of the power box 31. When the temperature drops below the normal operating temperature, the controller of the external solar street light controls the semiconductor cooling sheet 36 to generate heat to provide the temperature of the battery 33; when the temperature rises, the excess heat can be discharged through the reserved ventilation port by the fan 34, or cooled by the semiconductor cooling sheet 36 to keep the battery 33 at a suitable working temperature. The power supply assembly 3 can adjust the temperature of the battery 33 according to the ambient temperature to ensure that the battery 33 has the nearest suitable working temperature.

[0025] The lower side of the mounting frame 2 is also fixed with a mounting box 22 by bolts. The CIGS photovoltaic panel 1 is equipped with a controller, which is placed in the mounting box 22. A constant current source controller (not shown in the figure) is installed on the circuit between the CIGS photovoltaic panel 1 and the LED light source of the solar street light, and the current constant current device is also placed in the mounting box 22. The constant current source controller ensures that the current of the LED light source is constant, and ensures that the LED light source always maintains a constant current during use, thereby protecting the LED light source and greatly improving its service life.

[0026] The sleeve 4 is sleeved on the upper end of the lamp post, and there is an inclination angle between the axis of the sleeve 4 and the end surface of the mounting frame 2, so that the CIGS photovoltaic panel 1 is installed in an inclined manner.

[0027] The above is only one embodiment of the present invention. It should be pointed out that a person skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A CIGS photovoltaic structure of a solar street lamp, characterized by: It includes a CIGS photovoltaic panel, a mounting frame, a sleeve and a power supply assembly, wherein the CIGS photovoltaic panel is fixed on the upper side of the mounting frame, and the sleeve is fixed on the lower side of the mounting frame; The power supply assembly includes a power supply box, a thermal insulation layer, a temperature sensor, at least one semiconductor cooling sheet, at least one battery and two fans. The inner wall of the power supply box is paved with a thermal insulation layer. The battery is arranged in the inner cavity of the power supply box. The power supply box is provided with an air inlet and an air outlet on both sides. The air inlet and the air outlet penetrate the side wall of the power supply box and the thermal insulation layer respectively. The two fans are respectively installed at the air inlet and the air outlet of the power supply box. The temperature sensor is installed in the inner cavity of the power supply box. The semiconductor cooling sheet extends into the inner cavity of the power supply box. Two adjacent CIGS photovoltaic panel brackets are fixedly connected to the installation frame through C-shaped steel; C-shaped steel is made of stainless steel or galvanized steel; A constant current source controller is installed in the circuit between the CIGS photovoltaic panel and the LED light source of the solar street light; The sleeve is mounted on the upper end of the lamp post, and an inclination angle is formed between the axis of the sleeve and the end surface of the mounting frame; The power box of the power assembly is fixedly connected to the back of the CIGS photovoltaic panel; The insulation layer of the power supply component is made of thermal insulation cotton.

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