CN210007669U

CN210007669U - Heat dissipation device for high-concentration photovoltaic system assembly

Info

Publication number: CN210007669U
Application number: CN201920069351.6U
Authority: CN
Inventors: 万小强; 高德兰; 於孝建; 李森; 刘沛松; 唐宏芬
Original assignee: China Datang Corp Renewable Power Co Ltd
Current assignee: China Datang Corp Renewable Power Co Ltd
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-01-31
Anticipated expiration: 2029-01-16

Abstract

The utility model provides a heat abstractor for high-power spotlight photovoltaic system subassembly, this high-power spotlight photovoltaic system subassembly include box body and solar cell, and solar cell and copper sheet base plate are connected, and the copper sheet base plate is connected with the heat conduction copper pipe, and the heat conduction copper pipe is connected with radiating fin, and it has the heat conduction working medium to fill in the heat conduction copper pipe, wherein high-power spotlight photovoltaic system subassembly be conventional high-power spotlight photovoltaic system subassembly, usually by condensing lens, secondary collecting mirror, spotlight solar cell, spotlight photovoltaic system subassembly box body, thoroughly solved high-power spotlight solar cell's heat dissipation problem to improve its solar cell photoelectric conversion utilization ratio, guarantee high-power spotlight photovoltaic system subassembly's design life and reliability.

Description

Heat dissipation device for high-concentration photovoltaic system assembly

Technical Field

The utility model relates to a solar energy power generation technical field, in particular to heat abstractor who is used for high concentration photovoltaic system subassembly.

Background

For a high-power concentrating photovoltaic system, the photoelectric conversion efficiency of a solar cell is about 35% -40%, most solar energy is not utilized, the solar energy is converted into heat energy, and the solar cell works in a high-temperature environment with high light intensity and large current due to the irradiation of long-time high-density solar radiation energy, the cell efficiency is reduced by 0.15% for each 1 ℃ rise of the surface temperature of the solar cell due to the characteristics of the solar cell, namely, the photoelectric conversion utilization rate of a system component is lower as the surface temperature of the solar cell is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat abstractor for high concentration photovoltaic system subassembly , the purpose is in order to solve high concentration solar cell's heat dissipation problem.

In order to achieve the above object, the utility model provides an kind of heat abstractor that is used for high concentration photovoltaic system subassembly has improved solar cell photoelectric conversion utilization ratio, guarantees high concentration photovoltaic system subassembly's design life and reliability.

kinds of heat abstractor for high power spotlight photovoltaic system subassembly, the compound mode from top to bottom in proper order is including condensing lens, secondary collecting mirror, solar cell, heat conduction gel, base plate, heat pipe, heat conduction worker radiating fin, spotlight photovoltaic system subassembly box body solar cell is connected with the copper sheet base plate, and the base plate is connected with the heat conduction copper pipe, and the heat conduction copper pipe is connected with radiating fin, and it has the heat conduction working medium to fill in the heat conduction copper pipe.

Preferably, the substrate is a copper sheet substrate, and the solar cell is bonded with the copper sheet substrate through a heat conducting gel.

Preferably, the surface of the copper sheet substrate is provided with a groove, and the solar cell is embedded into the groove, so that the heat conduction gel is convenient to bond.

Preferably, the heat radiating fins are aluminum alloy.

Preferably, the copper sheet substrate is provided with a groove, and the groove is arranged on the upper surface of the copper sheet substrate.

Preferably, the end of the heat conducting copper tube is inserted into a preformed hole of the copper sheet substrate, and is fastened by a screw to keep uniform and effective hard contact.

Preferably, the aluminum alloy radiating fins are fixed on the back of the box body of the externally-hung concentrating photovoltaic system component by screws.

The condensing lens is a high-power condensing Fresnel lens, generally can condense 1000 times of light by 250 times, the secondary condensing lens is inverted glass pyramids, the solar cell is a gallium arsenide cell, the cell conversion efficiency is generally between 35% and 40%, the heat-conducting gel is a colloid material with high heat conductivity, low thermal resistance, insulativity and high temperature resistance, the heat conductivity is 3W/mK to 8W/mK, the upper surface of the copper sheet substrate is provided with chip grooves and jacks, the heat-conducting copper tube is a copper hollow tube, a heat-conducting working medium is filled in the copper hollow tube, the liquid filling rate is 20% to 35%, and the heat-conducting working medium is a mixture of water, alcohol, acetone, antifreeze, preservative and the like.

The utility model discloses the heat abstractor's of current conventional spotlight photovoltaic system subassembly innovation advantage is compared: after the heat-conducting gel is adopted, the heat transmission of the solar cell is greatly improved; the copper sheet substrate is used as a contact heat dissipation material, so that the heat conduction of the copper sheet substrate is superior to that of a conventional aluminum material; the heat conduction copper pipe is combined with the heat conduction working medium for circulating convection heat conduction, so that heat generated by the solar cell can be transferred to the outside of the high-power concentrating photovoltaic system assembly box body and is contacted with outside air to achieve a natural heat dissipation effect, and in addition, the filling rate of the heat conduction working medium is 20-35%, and the heat dissipation effect is also improved; the heat dissipation material outside the box body of the high-power concentrating photovoltaic system component adopts the aluminum alloy fins, so that cost price advantage is considered, and the heat dissipation effect is exerted to the maximum extent; because the utility model discloses high-power spotlight photovoltaic system component's heat abstractor has apparent effect in the aspect of the heat dissipation, with solar cell surface temperature reduction 15 ℃ -30 ℃ to make solar cell generate efficiency under normal operating condition and improve 2% -4%.

Drawings

Fig. 1 is a schematic diagram of a basic structure of embodiments of the present invention in a front view direction.

Fig. 2 is a schematic view of a connection overlooking structure of the copper sheet substrate, the heat conducting copper tube and the aluminum alloy heat dissipation fin.

Fig. 3 is a schematic diagram of a side view structure of the connection of the copper sheet substrate, the heat conducting copper tube and the aluminum alloy heat dissipation fin.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The terms "mounted," "connected," and "connected" are intended to be , for example, they may be fixed or removable, or they may be physically connected, mechanical or electrical, directly or indirectly through intervening media, or they may be interconnected between two elements.

To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further with reference to the accompanying drawings.

The present invention is described in further detail at with reference to specific examples, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1, fig. 2, and fig. 3, the heat dissipation device for a high-power concentrating photovoltaic system assembly of this embodiment includes a concentrating lens 1, a secondary concentrating mirror 2, a solar cell 3, a heat conducting gel 4, a substrate 5, a heat conducting pipe 6, a heat conducting working medium 7, a heat dissipation fin 8, and a high-power concentrating photovoltaic system assembly box 9. The substrate 5 is preferably a copper sheet substrate, the heat transfer pipe 6 is preferably a heat transfer copper pipe, and the heat dissipation fins 8 are preferably aluminum alloy heat dissipation fins.

The utility model discloses a heat abstractor's structure for high concentration photovoltaic system subassembly, optimize the improved design on ordinary conventional high concentration photovoltaic system subassembly, concrete structure is shown in figure 1, condenser lens 1 is the top, be secondary condenser lens 2 below condenser lens, secondary condenser lens 2 lower surface bonds in with the encapsulation of solar cell 3, solar cell 3 bonds the embedding in the upper surface recess of copper sheet base plate 5 through heat conduction gel 4, heat conduction copper pipe 6 end inserts in the copper sheet base plate preformed hole (refer to figure 2, figure 3), it keeps even effectual hard contact to fasten with the screw, thereby guarantee to have good contact heat exchange between heat conduction copper pipe and the copper sheet base plate, it has heat conduction working medium 7 to fill in heat conduction copper pipe 6, through after the spot light photovoltaic system subassembly box body punches, wear out heat conduction copper pipe 6 in addition end spot light photovoltaic system subassembly box body, insert aluminum alloy fin 8 for the preformed hole screw fastening, it fixes the external solar cell subassembly box body with the screw to keep even effectual hard contact.

The utility model discloses heat abstractor embodiment of high power spotlight photovoltaic system subassembly adopts 2 4 gallium arsenide solar cell array, solar cell efficiency is 38.5%, high power spotlight fresnel lens 500 times and secondary spotlight prism 2 times's comprehensive spotlight ability 1000 times, heat conduction copper pipe adopts 2, heat conduction working medium 7 adopts water and alcohol mixture, the packing rate of heat conduction working medium 7 in the copper pipe is 25%, the high power spotlight photovoltaic system subassembly of constitution expandes the explanation, its system component power 320W, contrast ordinary conventional spotlight photovoltaic system subassembly, let it descend normal operating condition to visit under the solar cell surface temperature 22 ℃ simultaneously, system component generated energy improves 2.5%, excellent radiating effect and solar cell efficiency promote have.

The utility model discloses a behind the heat conduction gel, solar cell generates heat the transmission and improves greatly adopt the copper sheet base plate as the contact heat dissipation material, contrast conventional aluminium system material heat-conduction has the advantage, adopt heat conduction copper pipe to combine heat conduction working medium circulation convection heat conduction, can be with the heat transfer that solar cell produced to high concentration photovoltaic system subassembly box body outside, and reach natural radiating effect with the outside air contact, heat conduction working medium filling rate is in 20% -35% in addition, the radiating effect has been improved equally, high concentration photovoltaic system subassembly box body outside heat dissipation material adopts aluminum alloy fin to compromise cost price advantage promptly, furthest performance its radiating effect again, because the utility model discloses the heat abstractor of high concentration photovoltaic system subassembly has apparent effect in the aspect of the heat dissipation, with solar cell surface temperature 15 ℃ -30 ℃, thereby make solar cell under normal operating condition the efficiency improve 2% -4% the implementation of the device, have higher innovation and practical value, have and push away value actively, have extensive usage and broad market prospect simultaneously.

Claims

1, kind of heat abstractor that is used for high concentration photovoltaic system subassembly, this high concentration photovoltaic system subassembly include solar cell, its characterized in that, heat abstractor includes the base plate, the base plate bonds be used for the conduction on the solar cell the heat source that solar cell produced, the base plate is connected with the heat pipe, the heat pipe is connected with radiating fin, it has heat conduction working medium to fill in the heat pipe.

2. The heat dissipation device for a high concentrating photovoltaic system component according to claim 1, wherein the substrate is a copper sheet substrate, and the solar cell is bonded to the copper sheet substrate by a thermally conductive gel.

3. The heat dissipation device for a high concentration photovoltaic system assembly as recited in claim 2, wherein the copper sheet substrate has a groove on a surface thereof, and the solar cell is embedded in the groove to facilitate thermal gel bonding.

4. The heat sink for a high concentrating photovoltaic system component according to claim 1, wherein the heat sink fins are aluminum alloy.

5. The heat dissipation device for a high concentrating photovoltaic system component according to claim 3, wherein the copper sheet substrate is provided with a groove, and the groove is arranged on the upper surface of the copper sheet substrate.

6. The heat sink for high concentrating photovoltaic system assembly as claimed in claim 1 wherein the ends of the heat pipes are inserted into the preformed holes of the copper substrate and fastened with screws to maintain uniform and effective hard contact.

7. The heat sink apparatus according to claim 4, wherein the aluminum alloy fins are screwed to the back of the case of the external concentrated photovoltaic system.