CN202816964U - Solar cell and lighting device - Google Patents
Solar cell and lighting device Download PDFInfo
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- CN202816964U CN202816964U CN201220526685XU CN201220526685U CN202816964U CN 202816964 U CN202816964 U CN 202816964U CN 201220526685X U CN201220526685X U CN 201220526685XU CN 201220526685 U CN201220526685 U CN 201220526685U CN 202816964 U CN202816964 U CN 202816964U
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- solar cell
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- lighting device
- silicon chip
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Abstract
The utility model provides a solar cell and a lighting device. The solar cell comprises a silicon slice which is circular. The solar cell in the utility model absorbs solar energy through the circular silicon slice. Compared with a square silicon slice in the prior art, the circular silicon slice is smaller in gap with a lampshade so that the area capable of effectively absorbing the solar energy is increased, thereby enabling the silicon slice in the utility model to be characterized by high power generating efficiency. Simultaneously, the solar cell in the utility model is also characterized by simple technology and low manufacture cost.
Description
Technical field
The utility model relates to solar powered field, more specifically, relates to a kind of solar cell and lighting device.
Background technology
(for example: the solar cell the solar cell Lawn lamp) adopts P type silicon chip (P type silicon chip is the polysilicon silicon chip) to make to lighting device of the prior art, and P type silicon chip of the prior art is square (please refer to Fig. 1).When using solar cell of the prior art, need square silicon wafer 10 ' is placed in the lampshade of lighting device, because lampshade is generally circle, therefore after square silicon wafer 10 ' is placed in the lampshade, there is very large gap in square silicon wafer 10 ' with the inwall of lampshade, thereby cause for the effective work area that receives solar energy very fewly, and generated output is low, to such an extent as to generating efficiency is difficult to improve.Square silicon wafer 10 ' takes the mode of scribing to be made, and the solar cell of 156*156 or two kinds of specifications of 125*125 is generally arranged.
For the generating efficiency, the generated output that improves solar cell that improve solar cell, guarantee light-emitting component can work (operating voltage that the supply power voltage of solar cell need reach light-emitting component), usually a plurality of square silicon wafers 10 ' are stacked successively in the prior art and after the welding of connecting forms solar module, solar module is put into the lampshade of lighting device, and such solar module not only takes up room too much but also the size of power output is subject to the restriction of lampshade space size.The magnitude of voltage that solar module of the prior art can provide is 5 volts, 5.5 volts and 12 volts, all can satisfy the power reguirements that power is 2.5 watts light-emitting component.
Because the power output of solar cell is limited, thereby can not satisfy the instructions for use of powerful light-emitting component, and because the generating efficiency of solar cell is lower, thereby the illuminalive power-supply that causes the operating time of light-emitting component short, is unfavorable for rainy weather.In addition, solar cell of the prior art has the high problem of manufacturing cost.
The utility model content
The utility model aims to provide a kind of solar cell and lighting device, to solve the problem that solar cell power generation efficient is low, power output is low in the prior art.
For solving the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of solar cell, comprising: silicon chip, silicon chip are circular.
Further, be provided with grid line on the silicon chip.
Further, grid line series connection and/or in parallel connection.
Further, silicon chip is the N-type silicon chip.
According to another aspect of the present utility model, a kind of lighting device is provided, comprise light-emitting component, storage battery and solar cell, solar cell is connected with storage battery, and storage battery is connected with light-emitting component, and solar cell is above-mentioned solar cell.
Further, lighting device also comprises lamp body, and lamp body comprises lampshade and lamp socket, and lampshade is installed in the top of lamp socket, and lampshade comprises container cavity, and solar cell and/or light-emitting component are installed in the container cavity, and storage battery is installed in the lamp socket.
Further, lighting device also comprises control circuit, and control circuit is connected with light-emitting component and storage battery respectively.
Further, control circuit comprises for the light-operated switch of controlling the light-emitting component bright light or turning off the light.
Further, light-operated switch is photo resistance.
Further, light-emitting component is the LED lamp.
Solar cell in the utility model absorbs solar energy by circular silicon chip, compare with square silicon wafer in the prior art, because the gap that exists between circular silicon chip and the lampshade is little, thereby increased the area of effective reception solar energy, thereby make the silicon chip in the utility model have the high characteristics of generating efficiency.Simultaneously the solar cell in the utility model has also that technique is simple, the characteristics of low cost of manufacture.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of square silicon wafer of the prior art and lampshade;
Fig. 2 has schematically shown the structural representation of the lighting device in the utility model; And
Fig. 3 has schematically shown silicon chip in the utility model and the structural representation of lampshade.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As first aspect of the present utility model, provide a kind of solar cell.As shown in Figures 2 and 3, solar cell comprises: silicon chip 10, silicon chip 10 are circular.Solar cell in the utility model absorbs solar energy by circular silicon chip 10, compare (please refer to Fig. 1) with square silicon wafer in the prior art 10 ', because the gap that exists between circular silicon chip 10 and the lampshade 31 is little, thereby increased the area of effective reception solar energy, thereby make the silicon chip 10 in the utility model have the high characteristics of generating efficiency.Simultaneously the solar cell in the utility model has also that technique is simple, the characteristics of low cost of manufacture.
Preferably, the silicon chip in the utility model 10 is N-type silicon chips.The N-type silicon chip is the monocrystalline silicon silicon chip, and the monocrystalline silicon silicon chip is stretched by polysilicon silicon chip (namely P type silicon chip of the prior art) and forms.N-type silicon chip in the utility model is compared with P type silicon chip of the prior art has the high characteristics of the solar energy generating efficiency of absorption.Above-mentioned two types silicon chip is in isocyatic situation, and the N-type silicon chip is higher than the minority carrier lifetime of P type silicon chip, and for example: resistivity is that the minority carrier lifetime of the N-type silicon chip of 3 Ω cm can reach more than the 2ms.The N-type silicon chip is to the tolerance higher (namely purity is higher) of metal impurities simultaneously, because the purity of N-type silicon chip is higher, thereby so that himself resistance less than P type silicon chip self-resistance, thereby so that the electric current that the N-type silicon chip produces is larger, the N-type silicon chip has the high characteristics of generating efficiency thus.The generating efficiency of the solar cell in the utility model has reached 18.7%, and the generating efficiency of solar cell of the prior art is about 16%.
Be provided with grid line on the silicon chip 10 in the utility model.Preferably, grid line series connection and/or in parallel connection.Grid line (for example conductor and welding) is arranged on the surface of silicon chip 10, is used for collecting silicon chip 10 and absorbs the electric current that produces behind the solar energy.N-type silicon chip in the utility model has the characteristics of two-sided low light level generating, and the N-type silicon chip adopts the method for phosphorus diffusion to form effective back surface field, and cooperate with grid line so that the front of silicon chip 10 absorbs solar energy, the back side of silicon chip 10 further absorbs solar energy by reflecting surface, compare with the situation of the 10 ' single face of square silicon wafer in prior art generating, greatly improved the generating efficiency of silicon chip 10.Because many main grid line parallels are connected, resistance reduces, electric current increases thereby make, and then has improved the generating efficiency of silicon chip 10.Preferably, grid line and silicon chip 10 are by being welded to connect.
As second aspect of the present utility model, provide a kind of lighting device.As shown in Figures 2 and 3, lighting device comprises light-emitting component, storage battery 20 and solar cell, and solar cell is connected with storage battery 20, and storage battery 20 is connected with light-emitting component, and solar cell is above-mentioned solar cell.Because solar cell is connected with storage battery 20, thereby the electric energy of solar cell will store in the storage battery 20, owing to storage battery 20 is connected with light-emitting component, thereby the light-emitting component electric energy work that can provide by storage battery 20.Preferably, light-emitting component is the LED lamp.
Preferably, lighting device also comprises lamp body 30, and lamp body 30 comprises lampshade 31 and lamp socket 32, and lampshade 31 is installed in the top of lamp socket 32, and lampshade 31 comprises container cavity, and solar cell and/or light-emitting component are installed in the container cavity, and storage battery 20 is installed in the lamp socket 32.Because solar cell adopts the generating of N-type silicon chip, thereby has improved generating efficiency and the power output of solar cell, thereby can satisfy the instructions for use of light-emitting component.Preferably, only a slice silicon chip 10 need be installed in the lighting device in the utility model.And in the prior art in order to satisfy the instructions for use of light-emitting component, need a plurality of square silicon wafers 10 ' series connection are stacked setting, thereby the lighting device in the utility model has the advantages that low cost of manufacture, solar cell occupy little space.And owing to the generating efficiency of the solar cell in the utility model is high, thereby can farthest be storage battery 20 chargings within the effective operating time, thereby so that the operating time of light-emitting component prolongation.
Preferably, the lighting device in the utility model also comprises control circuit, and control circuit is connected with light-emitting component and storage battery 20 respectively.Further, control circuit comprises for the light-operated switch 40 of controlling the light-emitting component bright light or turning off the light.Owing to be provided with light-operated switch 40, thereby can control the break-make of the control circuit between storage battery 20 and the light-emitting component by light-operated switch 40.When light-operated switch 40 work, control circuit is communicated with storage battery 20 with light-emitting component, and this moment, storage battery 20 provided stable electric energy to make the light-emitting component bright light to light-emitting component.When light-operated switch 40 was not worked, control circuit was equivalent to open circuit, and this moment, storage battery 20 was not communicated with light-emitting component, thereby light-emitting component is turned off the light.Preferably, light-operated switch 40 is photo resistance.Owing to the perceptual performance good and working stability of photo resistance to light, thereby be widely used in this type of lighting device.Preferably, regulate by the PWM mode or by the brightness of control simulation voltage illumination apparatus by microcontroller.
One preferably among the embodiment, light-emitting component is that four power are LED lamps of 0.5 watt, work simultaneously in order to guarantee four LED lamps, lighting device need provide 2 watts power, the power of solar cell is 4.94 watts among this embodiment, the tentative standard light application time is 3.5 hours (conversion is to 1000 watts/square meter of irradiation intensity), and the energy output of solar cell is 17.29 watts/day among this embodiment, so be 8.645 hours the service time of lighting device.And the power of solar cell of the prior art is 3.18 watts, and the energy output of solar cell of the prior art is 11.13 watts/day, so be 5.565 hours the service time of lighting device of the prior art.Compare and to learn, the lighting device of the preferred embodiment can be multiplex 3.08 hours than lighting device of the prior art, thereby increased substantially the service time of lighting device, especially when rainy weather, used the lighting device in the utility model to provide convenience to the user.
Preferably, the lighting device in the utility model is applicable to the greenery patchess, public place such as outdoor garden illumination and landscape ornamental, can be used as garden lamp and Lawn lamp and uses.In addition because this lighting device relies on solar power generation, thereby use the energy of environmental protection, cleaning, thereby be subject to users' favor.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a solar cell is characterized in that, comprising: silicon chip (10), described silicon chip (10) are circular.
2. solar cell according to claim 1 is characterized in that, described silicon chip is provided with grid line on (10).
3. solar cell according to claim 2 is characterized in that, described grid line series connection and/or in parallel connection.
4. solar cell according to claim 1 is characterized in that, described silicon chip (10) is the N-type silicon chip.
5. lighting device, comprise light-emitting component, storage battery (20) and solar cell, described solar cell is connected with described storage battery (20), described storage battery (20) is connected with described light-emitting component, it is characterized in that described solar cell is each described solar cell in the claim 1 to 4.
6. lighting device according to claim 5, it is characterized in that, described lighting device also comprises lamp body (30), described lamp body (30) comprises lampshade (31) and lamp socket (32), described lampshade (31) is installed in the top of described lamp socket (32), described lampshade (31) comprises container cavity, and described solar cell and/or described light-emitting component are installed in the described container cavity, and described storage battery (20) is installed in the described lamp socket (32).
7. lighting device according to claim 5 is characterized in that, described lighting device also comprises control circuit, and described control circuit is connected with described light-emitting component and described storage battery (20) respectively.
8. lighting device according to claim 7 is characterized in that, described control circuit comprises be used to the light-operated switch (40) of controlling described light-emitting component bright light or turning off the light.
9. lighting device according to claim 8 is characterized in that, described light-operated switch (40) is photo resistance.
10. lighting device according to claim 5 is characterized in that, described light-emitting component is the LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220526685XU CN202816964U (en) | 2012-10-15 | 2012-10-15 | Solar cell and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220526685XU CN202816964U (en) | 2012-10-15 | 2012-10-15 | Solar cell and lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202816964U true CN202816964U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220526685XU Expired - Fee Related CN202816964U (en) | 2012-10-15 | 2012-10-15 | Solar cell and lighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202816964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107845A (en) * | 2019-05-10 | 2019-08-09 | 中山市贝斯朗照明灯饰有限公司 | A kind of solar energy garden lamp of band USB charging |
-
2012
- 2012-10-15 CN CN201220526685XU patent/CN202816964U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107845A (en) * | 2019-05-10 | 2019-08-09 | 中山市贝斯朗照明灯饰有限公司 | A kind of solar energy garden lamp of band USB charging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20161015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |