Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, particularly solves present wireless charging mode complex structure, the defective that charge efficiency is low.
For achieving the above object, one aspect of the present invention has proposed a kind of wireless charging system, comprising: light source generator, described light source generator are used to launch the light of specific band so that the spectral energy in the specific band to be provided; And photoelectric conversion device, described photoelectric conversion device has the light absorption plate, and described light absorption plate has high photoelectric conversion efficiency so that described spectral energy is converted into electric energy for the spectral energy in the described specific band.
The embodiment of the invention provides the light of specific band by the light source generator for photoelectric conversion device, thereby can greatly improve the charge efficiency of wireless charging.
In one embodiment of the invention, described light absorption plate comprises the multijunction structure photocell that adopts SiC or III-V group iii v compound semiconductor material to make, and the energy gap of described compound semiconductor materials is corresponding with described specific band.Transformation efficiency by the direct forbidden band of many knots compound semiconductor materials light absorption plate can reach more than 70%, as InGaN, and InGaP, batteries such as AlGaN adopt purple LED or blue-ray LED etc. if cooperate, and can realize very high electric energy transmitting efficient.
In one embodiment of the invention, described light source generator further comprises: light emitting module is used to launch the light of specific band so that the spectral energy in the specific band to be provided; With the power supply management module, be used to described light emitting module power supply.
In one embodiment of the invention, described light source generator also comprises: the reflector layer that is positioned at described light emitting module rear end.
In one embodiment of the invention, described light emitting module is LED, led array or low power laser.
In one embodiment of the invention, described LED or led array comprise one or more in white light LEDs, blue-ray LED, ultraviolet leds and the purple LED.
In one embodiment of the invention, also comprise: sensing unit is used to detect area and/or the position that is placed on the electronic equipment on the light source generator, control module be used for according to electronic equipment area/or regioselectivity ground open part or all of light emitting module.In one embodiment of the invention, described sensing unit is electric capacity touch screen, resistance touch screen, light sensor or pressure sensor.
In one embodiment of the invention, also comprise: light focusing unit, described light focusing unit are used for the light of described light emitting module emission is carried out optically focused.
The present invention has also proposed a kind of light source generator on the other hand, comprising: light emitting module, described light emitting module are used to launch the light of specific band so that the spectral energy in the specific band to be provided; With the power supply management module, described power supply management module is used to described light emitting module power supply.
In one embodiment of the invention, described light emitting module is LED, led array or low power laser.
In one embodiment of the invention, particularly, described LED, led array comprise white light LEDs, blue-ray LED (conversion efficiency is more than 60%), one or more in ultraviolet LED or the purple LED (conversion efficiency is more than 80%).
In one embodiment of the invention, also comprise: sensing unit, described sensing unit are used for part or all according to area that is placed on electronic equipment on the described light emitting module and/or the described light emitting module of regioselectivity ground unlatching.In one embodiment of the invention, described sensing unit is electric capacity touch screen, resistance touch screen, light sensor or pressure sensor.In embodiments of the present invention, sensing unit can select to open the part in the corresponding light emitting module according to the size of electronic equipment, thereby can realize the versatility of light source generator.
In one embodiment of the invention, also comprise: light focusing unit, described light focusing unit are used for the light of described light emitting module emission is carried out optically focused, for example can adopt the Fresnel condenser lens.In embodiments of the present invention, can converge to photoelectric conversion device by the light that light focusing unit is launched the led array of sheet, thereby improve charging rate and charge efficiency.
In one embodiment of the invention, also comprise: be positioned at the reflector layer of described light emitting module rear end, can improve light utilization, thereby further improve electricity conversion by this reflector layer.
The embodiment of the invention has also proposed a kind of charging device on the other hand, comprising: the light absorption plate, and described light absorption plate has high photoelectric conversion efficiency so that described spectral energy is converted into electric energy for the spectral energy in the described specific band; And charge storage unit, described charge storage unit links to each other to store described electric energy with described light absorption plate.
In one embodiment of the invention, described light absorption plate comprises the multijunction structure photocell that adopts SiC or III-V group iii v compound semiconductor material to make, and the energy gap of described compound semiconductor materials is corresponding with described specific band.
The embodiment of the invention has also proposed a kind of electronic equipment on the other hand, comprises aforesaid charging device.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " vertically ", " laterally ", " on ", close the orientation of indications such as D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position is based on orientation shown in the drawings or position relation, only be that the present invention for convenience of description and simplification are described, rather than indication or the hint device of indication or element must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In description of the invention, need to prove, unless otherwise prescribed and limit, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly by intermediary, for the ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
As shown in Figure 1, be the wireless charging system structure chart of the embodiment of the invention.This wireless charging system comprises light source generator 100 and photoelectric conversion device 200.Light source generator 100 is used to launch the light of specific band so that the spectral energy in the specific band to be provided.Photoelectric conversion device 200 has the light absorption plate, and this light absorption plate has high photoelectric conversion efficiency so that spectral energy is converted into electric energy for the spectral energy in the specific band, thereby is embodied as the wireless charging of electronic equipment.The embodiment of the invention provides the light of specific band by light source generator 100 for photoelectric conversion device 200, thereby can greatly improve the charge efficiency of wireless charging.
In one embodiment of the invention, this light absorption plate comprises the multijunction structure photocell that adopts SiC or III-V group iii v compound semiconductor material to make, the energy gap of this compound semiconductor materials is corresponding with described specific band, for example SiC, InGaN, AlGaN, InGaP or InGaNAs etc.Particularly, for example the light source generator comprises the LED or the led array of high-power and high-luminance, as blue-ray LED, ultraviolet LED or purple LED etc.In another embodiment of the present invention, the light source generator also can comprise low power laser.
The embodiment of the invention can reach more than 70% by the transformation efficiency of the direct forbidden band of more piece compound semiconductor materials light absorption plate, as batteries such as SiC, InGaN, InGaP, AlGaN or InGaNAs, adopt purple LED or blue-ray LED etc. if cooperate, can realize very high electric energy transmitting efficient.
In one embodiment of the invention, electronic equipment also can use clear films battery or common solar cell as photoelectric conversion device 200, as transparent membrane solar cell etc. is installed on mobile phone screen, although conversion efficiency can be hanged down, but made things convenient for use, product appearance has also been had no effect.
In one embodiment of the invention, described light source generator comprises LED, led array or the low power laser of high-power and high-luminance.Particularly, described led array comprises white light LEDs, blue-ray LED (conversion efficiency 60%), one or more in ultraviolet LED or the purple LED (conversion efficiency 80%).
As shown in Figure 2, be schematic diagram for embodiment of the invention light source generator with electronic equipment charging of photoelectric conversion device.As shown in Figure 3, be stereogram for embodiment of the invention light source generator with electronic equipment charging of photoelectric conversion device.As shown in Figure 4, be the schematic diagram of embodiment of the invention light source generator.In embodiments of the present invention, light source generator 100 is tabular, make electronic equipment can be placed on the light source generator 100, when carrying out wireless charging, the face that has light absorption plate in the photoelectric conversion device 200 on the electronic equipment is relative with light source generator 100, preferably, light source generator 100 is in contact with one another with photoelectric conversion device, thereby the most of light that makes the light source generator launch can both enter among the photoelectric conversion device 200.But need to prove, though light source generator 100 directly contacts with photoelectric conversion device 200 in the figure, but since light have the very little characteristic of in short distance decay and not can to around constitute radiation effect, so light source generator 100 and photoelectric conversion device 200 also can between be separated with predetermined distance.
In one embodiment of the invention, for fear of when the less electronic equipment of volume is placed on the light source generator, the led array of light source generator 100 is all opened, thereby causes the defective of unnecessary waste.In the present invention, light source generator 100 also comprises sensing unit 130, sensing unit 130 is used to detect area and/or the position that is placed on the electronic equipment on the light source generator 100, control module 160 be used for according to electronic equipment area/or regioselectivity ground open part or all of light emitting module 110.Preferably, sensing unit 130 is electric capacity touch screen, resistance touch screen, light sensor or pressure sensor.In embodiments of the present invention, sensing unit 130 can select to open the part in the corresponding light emitting module according to the size of electronic equipment, thereby can realize the versatility of light source generator 100.
In one embodiment of the invention, this light source generator 100 also comprises the reflector layer 140 that is positioned at light emitting module 110 rear ends, can improve light utilization by this reflector layer 140, thereby further improves electricity conversion.
As shown in Figure 5, be schematic diagram for another embodiment of the present invention light source generator with electronic equipment charging of photoelectric conversion device.In this embodiment, also be provided with collector lens between light source generator 100 and photoelectric conversion device 200, the light that light source generator 100 is sent converges, thereby has improved the energy density of photoelectric conversion efficiency and charging.Can also adopt Fresnel condenser lens etc. in other embodiments of the invention.
In other embodiments of the invention, light source generator 100 can also be arranged on the top, thereby can be following a plurality of electronic equipment chargings with photoelectric conversion device 200.
In an embodiment of the present invention, in order to increase the versatility of light source generator, promptly make the light source generator both can be less portable terminal charging such as mobile phone, iPhone, also can be bigger terminal equipment charging such as iPad, Hand Personal Computer, notebook, the size of therefore common light source generator is greater than the size of electronic equipment.As shown in Figure 3, can be 200 chargings of two photoelectric conversion devices that vary in size simultaneously on a light source generator 100.
As shown in Figure 6, be the structure chart of embodiment of the invention light source generator.Light source generator 100 comprises light emitting module 110, power supply management module 120.Light emitting module 110 is used to launch the light of specific band so that the spectral energy in the specific band to be provided.Power supply management module 120 is used to light emitting module 110 power supplies.
For fear of when the less electronic equipment of volume is placed on the light source generator, the led array of light source generator 100 is all opened, thereby causes the defective of unnecessary waste.In the present invention, light source generator 100 also comprises sensing unit 130 and control module 160, sensing unit 130 is used to detect area and/or the position that is placed on the electronic equipment on the light source generator 100, control module 160 be used for according to electronic equipment area/or regioselectivity ground open part or all of light emitting module 110.Preferably, sensing unit 130 is electric capacity touch screen, resistance touch screen, light sensor or pressure sensor etc.In embodiments of the present invention, sensing unit 130 can select to open the part in the corresponding light emitting module according to the size of electronic equipment, thereby can realize the versatility of light source generator 100.
In one embodiment of the invention, light source generator 100 also comprises light focusing unit, and light focusing unit is used for the light of described light emitting module emission is carried out optically focused, for example preferably can adopt the Fresnel condenser lens.In embodiments of the present invention, can converge to photoelectric conversion device by the light that light focusing unit is launched the led array of sheet, thereby improve the energy density of photoelectric conversion efficiency and charging.
As shown in Figure 7, be the charging device structure chart of the embodiment of the invention.This charging device 300 comprises light absorption plate 310 and charge storage unit 320.Light absorption plate 310 has high photoelectric conversion efficiency so that described spectral energy is converted into electric energy for the spectral energy in the specific band.Charge storage unit 320 links to each other with storage of electrical energy with light absorption plate 310, thereby is power electronic equipment.Can realize that by the light absorption plate of the embodiment of the invention thereby spectral energy in the specific band is had very high conversion efficiency improves charge efficiency.
In one embodiment of the invention, light absorption plate 310 comprises the multijunction structure photocell that adopts SiC or III-V group iii v compound semiconductor material to make, the energy gap of this compound semiconductor materials is corresponding with described specific band, for example SiC, InGaN, InGaP, AlGaN or InGaNAs etc.
The embodiment of the invention has also proposed a kind of electronic equipment, comprises aforesaid charging device.
The wireless charging system of the embodiment of the invention also has following advantage,
What 1, the transmission medium of energy adopted is light rather than electromagnetic wave, thereby electromagnetic-radiation-free harm is definitely harmless to human body;
2, the area of light source generator can be done very greatly, therefore can be simultaneously to a plurality of equipment charges, and highly versatile only can be controlled the light source of charge position simultaneously as required and open, thereby very energy-conservation;
3, power transfer density can be done very greatly, unlike the electromagnetism charging modes, need the coil dimension coupling and the accurate adjusting of position just can obtain required voltage and power, different light absorption plate areas mean different power, and the different voltages that need for mobile device adopt different light absorption plates to get final product;
4, no emc issue can not leak out electromagnetic radiation, to not exerting an influence to the other electron component electronic equipment, does not disturb other wireless communication signal, as mobile phone signal etc.;
5, light ray energy is less with distance increase decay, and effective propagation path is far away, needs near field coupling or complicated directional beam technologies unlike the electromagnetism charging;
6, it is little that the light source generator adopts the leakage of slab construction light, very little to environment or human influence;
7, be applicable to various sheathing materials, can the mobile device that adopt various sheathing materials be charged, such as the equipment of belt leather cover, plastic casing, metal shell etc., the electromagnetic type charging device is then powerless to the equipment of metal shell, is difficult to reach promising result;
8, photoelectric conversion device still can provide certain conversion efficiency under sunlight, can promptly not charge by sunlight or other light source under the situation of charge power supply having, usefulness when supply is emergent, induction charging then under any circumstance must have the externally fed power supply just can charge;
9, since the demand of the voltage of different mobile devices and power mainly realize by the structure of adjusting light absorption plate, therefore the light source generator also has the advantage of highly compatible, can take into account the various criterion of different company, do not need unified standard, only needing to satisfy the basis requires to get final product, therefore different equipment can be realized generally on function, and being energy transmission efficiency may some difference.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification that scope of the present invention is by claims and be equal to and limit to these embodiment.