CN102255575A - Solar power supply device - Google Patents
Solar power supply device Download PDFInfo
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- CN102255575A CN102255575A CN2011102158904A CN201110215890A CN102255575A CN 102255575 A CN102255575 A CN 102255575A CN 2011102158904 A CN2011102158904 A CN 2011102158904A CN 201110215890 A CN201110215890 A CN 201110215890A CN 102255575 A CN102255575 A CN 102255575A
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- power supply
- solar power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a solar power supply device. An energy storage unit is arranged between a photoelectric conversion unit and an electric energy output end of the solar power supply device, wherein the energy storage unit is composed of a first energy storage unit and a second energy storage which are in a parallel connection state, and the energy storage capacity of the second energy storage unit is larger than that of the first unit; in the parallel circuit of the second energy storage unit, a first voltage control structure and a first switching unit controlled by the first voltage control structure are arranged in front of the second energy storage unit so as to control the on-off of a charging circuit; and only when the output voltage of the first energy storage unit is equal to or higher than a set threshold of the first voltage control structure, the first voltage control structure conducts the first switching unit to charge the second energy storage unit. The solar power supply device provided by the invention can rapidly supply the corresponding working current for back-end circuits on the basis of the collection and storage of low currents, thus the waiting time of the power supply for the back-end circuits can be obviously reduced and the power supply time can be prolonged.
Description
Technical field
The present invention relates to solar power supply apparatus, concrete will be the solar power supply apparatus that energy storing structure is specifically arranged.
Background technology
At present, all adopt battery as energy-storage travelling wave tube in most of solar power supply apparatus, owing to during battery charge voltage/current is required high, therefore its circuit structure is comparatively complicated, partial circuit even need come control circuit work with microprocessor, thereby its circuit itself just consumed the energy of considerable part, and the efficient of capacity usage ratio and charging is all had certain influence.In addition, some charging circuit has adopted novel farad capacitor (also to claim gold electric capacity, super capacitor, electric double layer capacitance), utilized its big electric current quick charge characteristic that has electric capacity concurrently, the energy storage of battery has been arranged again simultaneously, series equivalent resistance is low, long service life, characteristics such as charging voltage is wide.In solar power supply apparatus, adopt when directly farad capacitor being charged in the circuit, because the common capacity of farad capacitor is bigger, reasons such as the charging current that solar cell provides is limited, make farad capacitor charge to and to satisfy the chronic of the minimum operating voltage of rear end load circuit from minimum tank voltage, in the initial a very long time of charging, the rear end load circuit all can not start work.Simultaneously, after farad capacitor voltage is reduced to below the minimum operating voltage of rear end load circuit, need to charge again, also need the very long charging interval, therefore limited the application of back-end circuit.
Summary of the invention
At above-mentioned situation, the invention provides a kind of solar power supply apparatus, can gather and store less current, and can realize and can be the long-time normal power supply of back-end circuit again fast for back-end circuit provides drive current.
The basic structure of solar power supply apparatus of the present invention, be between the photoelectric conversion unit of solar energy and electric energy output end, to be provided with energy-storage units, this energy-storage units is first energy-storage units and second energy-storage units of state in parallel, and the stored energy capacitance of second energy-storage units is greater than first module.In the parallel circuits at the second energy-storage units place, before second energy-storage units, also be provided with the first voltage control structure and be subjected to first switch element of its control to control the break-make of this charging circuit, have only when the output voltage of first energy-storage units is higher than the setting threshold of this first voltage control structure, this first voltage control structure is conducting first switch element, and second energy-storage units is charged.
The groundwork process and the principle of said apparatus of the present invention, be less first energy-storage units of stored energy capacitance to be charged by the output current elder generation of solar photovoltaic conversion unit, make it can be satisfied the output voltage of the minimum operating voltage of back-end circuit, and begin to be the back-end circuit power supply by quick charge.And in the second energy-storage units circuit in parallel with first energy-storage units, because the output voltage of first energy-storage units does not reach the setting threshold of the first voltage control structure as yet, therefore the circuit of second energy-storage units is in cut-off state.Has only the setting threshold that reaches (being equal to or higher than) the first voltage control structure when the output voltage of first energy-storage units, this first voltage control structure is conducting first switch element, begin second energy-storage units is charged, when first energy-storage units makes the voltage of output be lower than the setting threshold of the operating voltage of back-end circuit and the first voltage control structure because of continued power, the output current of solar photovoltaic conversion unit just stops second energy-storage units is charged, and restart first energy-storage units is charged, make it can realize exporting to the back-end again power supply fast, so repeatedly.When second energy-storage units of this big stored energy capacitance store into be enough to satisfy the electric energy of output is provided after, back-end circuit is carried out long-time continued power in beginning to the back-end by second energy-storage units.
On the said structure basis, selectable a kind of improvement is, said solar photovoltaic conversion unit can be adopted as the two or more groups of state in parallel, to increase the opto-electronic conversion amount, satisfying can be first energy-storage units and the charging of second energy-storage units more quickly, and the use of shortening the charging interval needs.
Another kind of selectable improvement project is that said second energy-storage units can be adopted as at least two group capacitance structures in parallel, to increase the memory capacity of electric energy, satisfies the needs that more permanent power supply can be provided for back-end circuit.
Experiment shows, in the above-mentioned solar power supply apparatus of the present invention, except that special purpose or needing, said first energy-storage units is adopted as the tantalum capacitance structure of at least one capacity 〉=330uF, as the TAJ series tantalum electric capacity that AVX Corp. produces, model such as TAJC337*006#NJ, TAJD337*006#NJ, TAJD4777*006#NJ etc.; Second energy-storage units is adopted as the farad capacitor structure of at least one capacity 〉=0.1F, SD series farad capacitor and SG series farad capacitor as the production of Panasonic company, model such as EECS0HD 104 (H), EECS5R5 (H) 474 also can be the PAS farad capacitors of the PAS614L model of Shoei company production.Adopt the capacitance structure of described capacity and model can satisfy generally use needs.
In the said structure, switch element in the parallel circuits at the said second energy-storage units place, preferably be adopted as the MOSFET(field effect transistor), positive-negative-positive triode or NPN type triode, as low grid voltage P channel mosfet of the PowerTrench of Fairchild semiconductor company technology etc., it has cut-in voltage low (1.8V), characteristics such as conducting resistance is little, and switching speed is fast can effectively reduce the power consumption of circuit.Metal-oxide-semiconductor is a kind of conducting control structure commonly used at present, and the P channel MOS tube has the low level on state characteristic, can realize circuit function more easily.The said first voltage control structure that is used to control its on/off, can select currently reported and/super low-power consumption that the intersil company that uses the produces chip ISL88003 series that resets, or the super low-power consumption of MAXMIN chip series of products etc. that reset.This class chip has the advantages that to select multiple different reset levels, can adapt to and satisfy the use needs of different situations.
Further preferred embodiment on the basis of said structure, be can also be between the photoelectric conversion unit of the solar energy of said first energy-storage units and second energy-storage units and its front end, respectively be connected with the corresponding rectification unit that constitutes by the front end rectifier structure respectively, and/or through the corresponding rectification unit that constitutes by the rear end rectifier structure that is connected separately electric energy exported respectively in the electric energy output end of first energy-storage units and second energy-storage units.Thereby can further realize and guarantee unglazed according to the time, make the electric charge of farad capacitor in the circuit only supply with back-end circuit and use, and on the circuit of said structure of the present invention without any consumption.Said front end rectifier structure and rear end rectifier structure all can adopt diode-type components and parts commonly used, or can have the structure or the circuit of said function.
Further, make that said first energy-storage units and second energy-storage units carry out electric current output respectively in the said apparatus of the present invention, can also help the setting of some auxiliary circuit/structures.For example,, can increase and be provided with the over-charge protective unit,, avoid the infringement that causes because of overcharging to protect first energy-storage units at the output of this first energy-storage units.This over-charge protective unit is usually to adopt an earthed circuit the easiest.For example, can adopt by the second switch unit that is provided with by the second voltage control structure control break-make, when the charging voltage to first energy-storage units is higher than the setting threshold of this second voltage control structure, the second voltage control structure can make the second switch unit conducting over the ground that is subjected to its control, with excessive charging current shunting ground connection, guarantee the safety of first energy-storage units.The field effect transistor as MOSFET(can be selected in said this second switch unit), positive-negative-positive triode or NPN type triode, the model of producing as infineon company is the N-channel MOS FET of BSS138N etc.The described second voltage control structure that is used to control this switch element break-make, can select currently reported and/control device that uses, as comprise the control device of the super low-power consumption voltage checking chip NCP303 series of products that ON Semiconductor company produces.
Solar power supply apparatus of the present invention, on the basis that can gather and store less solar photovoltaic conversion electric current, can satisfy fast and provide required supply power voltage/electric current for back-end circuit, obviously shorten stand-by period to the back-end circuit power supply, the purpose that back-end circuit can be started working fast, can be embodied as back-end circuit again simultaneously provides long normal power supply.
Below in conjunction with the embodiment of accompanying drawing illustrated embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Description of drawings
Fig. 1 is a kind of structural representation of solar power supply apparatus of the present invention.
Fig. 2 is the another kind of structural representation of solar power supply apparatus of the present invention.
Fig. 3 is another structural representation of solar power supply apparatus of the present invention.
Embodiment
Solar power supply apparatus of the present invention as shown in Figure 1, between the photoelectric conversion unit J1 of solar energy and electric energy output end, be provided with the energy-storage units that the first energy-storage units C1 and the second energy-storage units C2 by state in parallel form, wherein the first energy-storage units C1 is the tantalum capacitance structure of 330uF, and the second energy-storage units C2 is the farad capacitor structure of 0.1F.Between the photoelectric conversion unit J1 of the solar energy of the first energy-storage units C1 and the second energy-storage units C2 and its front end, respectively be connected with the rectification unit that the front end rectifier structure D1 by the diode form constitutes respectively, while is in the electric energy output end of the first energy-storage units C1 and the second energy-storage units C2, also the corresponding rectification unit that constitutes through the rear end rectifier structure D2 by the diode form of connection is separately respectively exported electric energy, to guarantee when not having illumination, the electric charge of farad capacitor is only supplied with back-end circuit and is used in the circuit, on this circuit without any consumption.In the parallel circuits at the second energy-storage units C2 place, before this second energy-storage units C2, also be provided with by intersil company produce the reset first voltage control structure U1 such as chip ISL88003 series (or the super low-power consumption of MAXMIN reset chip series) and be subjected to the switch element Q1 of its control of super low-power consumption, control the break-make of this charging circuit.Wherein switch element Q1 can select the P channel mosfet of the BSS138N that the FDN304P that produces as FAIRCHILD company or infineon produce etc.Have only when the output voltage V CC of the first energy-storage units C1 is equal to or higher than the setting threshold (can use needs to set according to difference) of this first voltage control structure U1, the first voltage control structure U1 is this first switch element of conducting Q1, begins the second energy-storage units C2 is charged.
Solar power supply apparatus of the present invention is not when initial condition has energy storage, the electric current that is provided by photoelectric conversion unit J1 is the first energy-storage units C1 quick charge, and when its positive terminal voltage is lower than the resetting voltage of setting threshold of the first voltage control structure U1, the RESET pin output voltage identical of the first voltage control structure U1 with the pin of output voltage V CC, thereby make switch element Q1 be in cut-off state, the second energy-storage units C2 is not recharged.Because the first energy-storage units C1 capacity is less relatively, can realize that therefore more than the rapid at short notice minimum operating voltage of voltage charging back-end circuit (VCC) with the first energy-storage units C1, beginning is the back-end circuit power supply.
Behind the resetting voltage of the voltage charging U1 of first energy-storage units C1 setting threshold, the RESET pin output low level of the first voltage control structure U1, thereby make switch element Q1 conducting, the electric current that provided by solar photovoltaic conversion unit J1 this moment changes by charging to the second energy-storage units C2 by switch element Q1.Because the second energy-storage units C2 capacity is bigger, its charging voltage rises slowly, but this moment, the first energy-storage units C1 voltage can guarantee the back-end circuit operate as normal, can not have influence on the operate as normal of back-end circuit.
Reduce to the resetting voltage of the first voltage control structure U1 when following when making its supply power voltage behind the first energy-storage units C1 continued power, the RESET pin of the first voltage control structure U1 ends switch element Q1 again, stop charging, and recover again the first energy-storage units C1 is charged the second energy-storage units C2.Come back to more than the resetting voltage of the first voltage control structure U1 when the voltage of the first energy-storage units C1 after, switch element Q1 is conducting once more, begins again the second energy-storage units C2 is charged.And so forth, after the second energy-storage units C2 charges to more than the minimum operating voltage of back-end circuit (VCC), provide long power supply for back-end circuit by the second energy-storage units C2.
By calculating as can be known, the appearance value of establishing the second energy-storage units C2 in the circuit is C, and its maximum charging voltage is U
Max, because not exclusively there is minimum operating voltage U in the farad capacitor discharge
Min, then its energy that can store is:
The farad capacitor stored charge is: promptly,
So it can provide the ampere-hour of energy to count n to be:
If charging current is I
In, then the farad capacitor charging interval is:
Promptly.
The selection of the second energy-storage units C2 can be determined according to the required energy that provides of back-end circuit, if the minimum operating voltage of back-end circuit is 3.3V, selects the electric capacity of 1F capacity, and the minimum operating voltage of back-end circuit is 2V.Photoelectric conversion unit J1 as solar energy can continue 20uA is provided electric current, and then back-end circuit time of starting working is:
In the solar power supply apparatus of the present invention, to select the first energy-storage units C1 of 470uF capacity be quick charge electric capacity as crossing, and then back-end circuit stand-by period of starting working is:
。
And the second energy-storage units C2 by the time that 2V charges to 3.3V is:
Therefore, during to the charging of the second energy-storage units C2 almost without any influence, thereby guaranteed back-end circuit can be in the second energy-storage units C2 charging process operate as normal.
Embodiment 2
As shown in Figure 2, on the basis of embodiment 1, in order to improve the input variable of charging current, shorten charging interval to the first energy-storage units C1 and the second energy-storage units C2, can photoelectric conversion unit J1 be set to many groups (shown in the figure are two groups) of state in parallel.In order to increase the energy memory space of the second energy-storage units C2, the second energy-storage units C2 also can be set to two groups of capacitance structure C21 in parallel and C22, can also be set to more groups of capacitance structures in parallel.
Embodiment 3
As shown in Figure 3; on the basis of embodiment 1 and embodiment 2; output at the first energy-storage units C1; also be provided with the over-charge protective unit of an earthed circuit; wherein be provided with the earthed circuit that has second switch unit Q2 that is connected with the first energy-storage units C1 output respectively and be used to control the Q2 break-make to be grounded the conducting whether second voltage control structure U2.The BSS138N model N-channel MOS FET that second switch unit Q2 can select infineon company to produce.The second voltage control structure U2 can select the super low-power consumption voltage checking chip NCP303 series of producing as ON Semiconductor company etc.When the charging voltage of the first energy-storage units C1 was higher than the setting threshold of this second voltage control structure U2, the second voltage control structure U2 made second switch unit Q2 conducting over the ground, and the protection back-end circuit can not damaged.
Claims (10)
1. solar power supply apparatus, between the photoelectric conversion unit (J1) of solar energy and electric energy output end, be provided with energy-storage units, it is characterized in that said energy-storage units is first energy-storage units (C1) and second energy-storage units (C2) of state in parallel, and the stored energy capacitance of second energy-storage units (C2) is greater than first module (C1), in the parallel circuits at second energy-storage units (C2) place, also be provided with the first voltage control structure (U1) before and be subjected to first switch element (Q1) of its control to control the break-make of this charging circuit at this second energy-storage units (C2), when the output voltage (VCC) of just thinking first energy-storage units (C1) was higher than the setting threshold of this first voltage control structure (U1), first voltage control structure (U1) conducting first switch element (Q1) charged to second energy-storage units (C2).
2. solar power supply apparatus as claimed in claim 1 is characterized in that said photoelectric conversion unit (J1) is at least two groups of state in parallel.
3. solar power supply apparatus as claimed in claim 1 is characterized in that said second energy-storage units (C2) is at least two group capacitor type structures in parallel.
4. as the described solar power supply apparatus of one of claim 1 to 3, it is characterized in that said first energy-storage units (C1) is the tantalum capacitance structure of at least one capacity 〉=330uF.
5. as the described solar power supply apparatus of one of claim 1 to 3, it is characterized in that said second energy-storage units (C2) is the farad capacitor structure of at least one capacity 〉=0.1F.
6. as the described solar power supply apparatus of one of claim 1 to 3, it is characterized in that the switch element (Q1) in the parallel circuits at second energy-storage units (C2) place is MOSFET, positive-negative-positive triode or NPN type triode.
7. as the described solar power supply apparatus of one of claim 1 to 3, it is characterized in that between the photoelectric conversion unit (J1) of the solar energy of first energy-storage units (C1) and second energy-storage units (C2) and its front end, respectively being connected with the corresponding rectification unit that constitutes by front end rectifier structure (D1) respectively.
8. as the described solar power supply apparatus of one of claim 1 to 3, it is characterized in that in the electric energy output end of said first energy-storage units (C1), through the corresponding rectification unit that connects separately electric energy is exported respectively by rear end rectifier structure (D2) formation with second energy-storage units (C2).
9. as the described solar power supply apparatus of one of claim 1 to 3, it is characterized in that output at said first energy-storage units (C1)
End alsoBe provided with the over-charge protective unit.
10. solar power supply apparatus as claimed in claim 9; it is characterized in that in said over-charge protective unit be an earthed circuit; wherein be provided with second switch unit (Q2) by the second voltage control structure (U2) control break-make; when the output voltage of first energy-storage units (C1) is higher than the setting threshold of this second voltage control structure (U2); the second voltage control structure (U2) makes second switch unit (Q2) conducting over the ground, and wherein second switch unit (Q2) can be MOSFET, positive-negative-positive triode or NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102158904A CN102255575A (en) | 2011-07-29 | 2011-07-29 | Solar power supply device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102158904A CN102255575A (en) | 2011-07-29 | 2011-07-29 | Solar power supply device |
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| CN102255575A true CN102255575A (en) | 2011-11-23 |
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| CN2011102158904A Pending CN102255575A (en) | 2011-07-29 | 2011-07-29 | Solar power supply device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762708A (en) * | 2014-01-10 | 2014-04-30 | 天津大学 | Integrated on-chip solar cell power supply system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5714869A (en) * | 1995-10-26 | 1998-02-03 | Canon Kabushiki Kaisha | Power source apparatus with battery and overcharge protection circuit |
| CN1405945A (en) * | 2001-09-19 | 2003-03-26 | 罗锦兴 | Telecontroller using power capacity and solar power-supply |
| EP1928070A2 (en) * | 2006-11-30 | 2008-06-04 | Beijing Hi-Tech Wealth Investment & Development Co., Ltd. | Method for supplying power with light voltage battery, device and system thereof |
| CN202143007U (en) * | 2011-07-29 | 2012-02-08 | 成都英泰力科技有限公司 | Solar power supply device |
-
2011
- 2011-07-29 CN CN2011102158904A patent/CN102255575A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5714869A (en) * | 1995-10-26 | 1998-02-03 | Canon Kabushiki Kaisha | Power source apparatus with battery and overcharge protection circuit |
| CN1405945A (en) * | 2001-09-19 | 2003-03-26 | 罗锦兴 | Telecontroller using power capacity and solar power-supply |
| EP1928070A2 (en) * | 2006-11-30 | 2008-06-04 | Beijing Hi-Tech Wealth Investment & Development Co., Ltd. | Method for supplying power with light voltage battery, device and system thereof |
| CN202143007U (en) * | 2011-07-29 | 2012-02-08 | 成都英泰力科技有限公司 | Solar power supply device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762708A (en) * | 2014-01-10 | 2014-04-30 | 天津大学 | Integrated on-chip solar cell power supply system |
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Address after: 100102 Beijing city Chaoyang District Lake Park No. 122 Botai International Building 11 storey block A room 1109 Applicant after: Beijing Yingtai Power Electronics Co. Ltd. Address before: 610000 Sichuan city of Chengdu province high tech Zone Guixi Industrial Park Applicant before: Yingtaili (Chengdu) Technology Co., Ltd. |
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Application publication date: 20111123 |