CN205051595U - Be used for nanogenerator energy collecting device that rubs - Google Patents
Be used for nanogenerator energy collecting device that rubs Download PDFInfo
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- CN205051595U CN205051595U CN201520839737.2U CN201520839737U CN205051595U CN 205051595 U CN205051595 U CN 205051595U CN 201520839737 U CN201520839737 U CN 201520839737U CN 205051595 U CN205051595 U CN 205051595U
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- power generator
- friction nanometer
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Abstract
The utility model discloses a be used for nanogenerator energy collecting device that rubs, include: rectifier unit is connected with friction nanogenerator's output for the electric current of receiving the output of friction nanogenerator will electric current rectification transform is the direct current, input energy storage unit is connected with rectifier unit's output for direct current to rectifier unit output carries out the energy storage processing, energy control switch unit is connected with the output of input energy storage unit for the energy storage of control input energy storage unit and release opportunity, DC -DC converting unit is connected with the output of energy control switch unit for become the invariable direct current of voltage with the DC conversion of energy control switch unit output, output energy storage unit is connected with DC -DC converting unit's output for the direct current of DC -DC converting unit output is received and saved, it is wide that the device has the operating voltage scope, advantages such as work threshold adjustment convenience.
Description
Technical field
The utility model relates to friction nanometer generating field, especially, relates to a kind of for friction nanometer power generator energy collecting device.
Background technology
Friction nanometer power generator (TENG) is that the friction between dependence two kinds of different nano materials causes Charger transfer to realize generating, the electricity that it sends can not directly by electronic equipments, and it is the alternating current that amplitude differs that reason has be electricity that it send at two: one; Two is that its energy output is smaller.Therefore, such as rely on the generating of piezoelectric, the temperature difference, electromagnetic wave the same with other, the electricity that friction nanometer power generator sends has to pass through to be collected and could use after conversion.
At present, there is many gathering-devices, these devices or all adopt discrete component to build in the micro-energy market of interchange, or be that core is set up in conjunction with some discrete devices with integrated circuit.But which kind of mode all can't do without rectification, filtering energy storage, this three part of threshold switch.AC signal becomes direct current through bridge rectifier or halfwave rectifier, more level and smooth direct current is become again through capacitor filtering energy storage, when the voltage on filtering storage capacitor reaches the high level that threshold switch determines, fault offset is gone out, voltage on filtering storage capacitor declines gradually, when dropping to the low value that threshold value determines, stops releasing energy, start again stored energy process next time, so repeatedly complete the power supply process into load.
But existing micro-energy collecting device all has some limitation.One is that the later direct-current working volts of rectification are general not high, mostly at below 25V, they are not suitable for this use with constant-current source character energy source harvest energy of friction nanometer power generator, because this greatly limits the size of prime energy storage filter capacitor storage power; Two is that their threshold value flexible adjustment is poor, some integrated circuit only has one or several threshold value to select, when voltage after such as rectification reaches 16V, energy collecting device starts to release energy, stop releasing energy when voltage drops to 14V, namely threshold value is [16V, 14V], even if the circuit that resolution element is built, if regulate threshold value also will change a lot of components and parts, this greatly limits the controllability of single collection energy size, thus the optimization of energy collection circuit collection efficiency can be affected.
Therefore, research and develop a kind of operating voltage range wide, the collection of energy conversion equipment that operation threshold is easy to adjust, become people's problem demanding prompt solution.
Utility model content
Given this, the utility model provides a kind of for friction nanometer power generator energy collecting device, and narrow with the operating voltage range solving the existence of existing collection of energy conversion equipment, operation threshold regulates the problems such as inconvenient.
The technical solution adopted in the utility model is as follows:
A kind of for friction nanometer power generator energy collecting device, it is characterized in that, comprising:
Rectification unit 20, is connected with the output of friction nanometer power generator 10, in order to receive the electric current of described friction nanometer power generator 10 output and described current commutates is transformed to direct current;
Input energy-storage units 30, is connected with the output of described rectification unit 20, carries out energy storage process for the direct current exported described rectification unit 20;
Energy hole switch element 50, is connected with the output of described input energy-storage units 30, for controlling stored energy and release opportunity of described input energy-storage units 30;
DC-DC converter unit 60, is connected with the output of described energy hole switch element 50, and the direct current for being exported by described energy hole switch element 50 converts the direct current of voltage constant to;
Export energy-storage units 70, is connected with the output of described DC-DC converter unit 60, for receive and store described DC-DC converter unit 60 output direct current.
Preferably, the divided current unit 40 of output voltage higher than predetermined threshold value for preventing described input energy-storage units 30 is provided with between described input energy-storage units 30 and described energy hole switch element 50.
Further preferably, described energy hole switch element 50 comprises the first comparator detected for high pressure, for the second comparator that low pressure detects, described first comparator, the output of described second comparator connects the input of rest-set flip-flop respectively, the output of described rest-set flip-flop connects described DC-DC converter unit 60 through OD door, described input energy-storage units 30 is under the control of described energy hole switch element 50, when the voltage on described input energy-storage units 30 is higher than first threshold, OD door exports high level and powers to described output energy-storage units 70 to drive described DC-DC converter unit 60 to work, described input energy-storage units 30 enters discharge regime, when the voltage on described input energy-storage units 30 is lower than Second Threshold, OD door output low level works to stop described DC-DC converter unit 60, and described input energy-storage units 30 enters the energy storage stage, and wherein, described first threshold is higher than described Second Threshold.
Further preferably, described friction nanometer power generator 10 is that a friction nanometer power generator or the parallel connection of multiple friction nanometer power generator are formed.
Further preferably, described output energy-storage units 70 adopts storage capacitor.
Further preferably, described output energy-storage units 70 comprises more than two or two storage capacitors be connected in series.
Further preferably, described DC-DC converter unit 60 is buck DC-DC change-over circuit.
The utility model has following beneficial effect:
The utility model is used for friction nanometer power generator energy collecting device, receive the energy of friction nanometer power generator and be converted to powered by direct current to input energy-storage units, and by arranging energy hole switch element, the energy storage of input energy-storage units and release are controlled opportunity, again the Power supply stored through input energy-storage units is exported energy-storage units, carried out the storage of energy by output energy-storage units.
This is used for friction nanometer power generator energy collecting device, be applicable to higher operating voltage, when operating voltage is higher, more energy is sent when being conducive to the every task of friction nanometer power generator, and then shift from friction nanometer power generator more multi-charge to input energy-storage units in, the electric capacity can deriving input energy-storage units is less, the energy stored is more, but voltage can increase on the electric capacity inputting energy-storage units simultaneously, and can bear higher operating voltage exactly this working condition create condition; In addition, it is easy to adjust that utility model friction nanometer power generator energy collecting device controls threshold value, and user can regulate threshold value to reach the maximization of energy output according to the working condition of friction nanometer power generator (comprising operating frequency, operating voltage etc.).
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation for friction nanometer power generator energy collecting device of the utility model preferred embodiment;
Fig. 2 is the structural representation of the utility model preferred embodiment energy hole switch element.
Description of reference numerals:
10, friction nanometer power generator unit;
20, rectification unit;
30, energy-storage units is inputted;
40, divided current unit;
50, energy hole switch element;
60, DC-DC converter unit;
70, energy-storage units is exported.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Preferred embodiment of the present utility model provides a kind of for friction nanometer power generator energy collecting device, for the de minimis energy that the friction nanometer power generator of collecting generates, and by this power conversion be export energy-storage units can energy, thus widen the application scenarios of friction nanometer power generator, to have operating voltage range wide for this gathering-device simultaneously, the advantages such as operation threshold is easy to adjust., all there is operating voltage range narrow in existing micro-energy collecting device, operation threshold regulates the limitations such as inconvenient.According to these characteristics, invented the present embodiment energy collecting device, this energy collecting device can convert faint alternating current to the direct current of voltage constant, can directly for MCU, wireless senser even load are powered.With reference to Fig. 1, the present embodiment energy collecting device comprises:
Rectification unit 20, is connected with the output of friction nanometer power generator 10, in order to receive the electric current of described friction nanometer power generator 10 output and described current commutates is transformed to direct current; As one preferred embodiment, the present embodiment rectification unit 20 is by controlled bridge-type rectification or voltage doubling rectifing circuit do not realize; Described friction nanometer power generator 10 can be that a friction nanometer power generator or the parallel connection of multiple friction nanometer power generator are formed;
Input energy-storage units 30, is connected with the output of rectification unit 20, carries out energy storage process for the direct current exported rectification unit 20;
Energy hole switch element 50, is connected with the output of input energy-storage units 30, for stored energy and the opportunity of release of control inputs energy-storage units 30;
DC-DC converter unit 60, is connected with the output of energy hole switch element 50, and the direct current for being exported by energy hole switch element 50 converts the direct current of voltage constant to, is the transducer of a buck configuration;
Export energy-storage units 70, be connected with the output of DC-DC converter unit 60, for receiving the direct current that DC-DC converter unit 60 exports;
Wherein, each part above-mentioned, except friction nanometer power generator, all can be positioned on one piece of circuit board.
In the present embodiment, alternatively, input energy-storage units 30 is made up of the ceramic condenser of extremely low ESR, can select 0.1 μ F ~ 4.7 μ F according to the size of input source.
Preferably, consider that collection of energy first stores the requirement of rear release, the utility model designs a kind of energy hole switch element, the operating voltage of energy hole switch element and DC-DC converter unit can up to 36V, energy hole switch element controls the work opportunity of DC-DC converter unit, and namely when DC-DC starts working and when power cut-off.
With reference to Fig. 2, the present embodiment energy hole switch element 50 comprises the first comparator detected for high pressure, for the second comparator that low pressure detects, first comparator, the output of the second comparator connects the input of rest-set flip-flop respectively, the output of rest-set flip-flop connects DC-DC converter unit 60 through OD door (gate circuit of open-drain), input energy-storage units 30 is under the control of energy hole switch element 50, when inputting the voltage on energy-storage units 30 higher than first threshold, OD door exports high level and powers to output energy-storage units to drive DC-DC converter unit 60 to work, input energy-storage units 30 enters discharge regime, when inputting the voltage on energy-storage units 30 lower than Second Threshold, OD door output low level works to stop DC-DC converter unit 60, and input energy-storage units 30 enters the energy storage stage, wherein, first threshold, higher than Second Threshold, carries out the accumulation-fault offset circulation of energy one by one so repeatedly.
With reference to Fig. 2, preferably, energy hole switch adopts a dual comparator, a rest-set flip-flop and an OD door, its input voltage is after 3 electric resistance partial pressures, enter dual comparator, R1 and R2 is potentiometer, R3 is certain value resistance, a comparator in dual comparator is used for high pressure and detects, another detects for low pressure, the top of the positive input terminal connecting resistance R1 of the comparator that high pressure detects, the top of the negative input end connecting resistance R2 of low pressure detection comparator, dual comparator remaining two input terminations voltage-reference.Comparator and rest-set flip-flop form a bistable circuit, meet thereafter a MOSFET and realize the output of OD door, received on the later voltage VIN of rectification or on other source of stable pressure during actual use by a pull-up resistor.Output directly control DC-DC converter unit Enable Pin, the i.e. operating state of control DC-DC of energy hole switch element.
Composition graphs 2, can calculate:
VINH and VINL is respectively HVT high voltage threshold and the low pressure threshold of energy collecting device, when collection of energy in device to VIN higher than VINH time, energy hole switch element exports high level, and this high level drives the enable input of DC-DC converter unit, thus makes DC-DC converter unit convert output energy; When the to a certain degree rear VIN of fault offset is lower than VINL, energy hole switch element output low level, closes DC-DC and exports, and this is again that collection of energy creates conditions next time, the collection of energy of the whole device that gone round and begun again like this and conversion process.
From formula (1) and (2), keep the inflexible value overregulating potentiometer R1 and R2 of R3 just can change output threshold value VINH and the VINL of energy hole switch.
If R1 is constant, when regulating R2 to increase, VINH also increases, and VINH reduces; Otherwise when regulating R2 to reduce, VINH also reduces, and VINL increases.
If R2 is constant, when regulating R1 to increase, VINH and VINL reduces simultaneously; Otherwise when regulating R1 to reduce, VINH and VINL increases simultaneously.
Like this by regulating R1 and R2, the control threshold value of needs just can be set.
In Fig. 2, when the Enable Pin of DC-DC converting unit is negative logic, i.e. the enable DC-DC of low level, so N-channel MOS FET can change P channel mosfet into, or adopts the Q output of rest-set flip-flop to remove the N-channel MOS FET driven below.In addition, the MOSFET of N raceway groove and P raceway groove also can be substituted by NPN type and positive-negative-positive transistor respectively.
In order to avoid damaging late-class circuit, preferably, the divided current unit 40 of output voltage higher than predetermined threshold value for preventing from inputting energy-storage units 30 is provided with between input energy-storage units 30 and energy hole switch element 50.When the voltage on input energy-storage units 30 is high after certain value, divided current unit 40 action, part energy of releasing, the circuit of protection rear class exempts from damage.The present embodiment divided current unit 40 can adopt the voltage-stabiliser tube of low-leakage current to realize.
The main components that the present embodiment exports energy-storage units 70 is made up of the minimum super capacitor of leakage current and super capacitor management of charging and discharging circuit.Preferably, export energy-storage units 70 and comprise more than two or two storage capacitors be connected in series.
The present embodiment is used for friction nanometer power generator energy collecting device, by receiving the energy of friction nanometer power generator and being converted to powered by direct current to input energy-storage units, and by arranging energy hole switch element, the energy storage of input energy-storage units and release are controlled opportunity, again the electric current supply that the energy stored through input accumulator is converted to constant electrical power through DC-DC converter unit is exported energy-storage units, be beneficial to the popularization of friction nanometer power generator generating, be with a wide range of applications.And the present embodiment circuit structure is simple, with low cost, be convenient to generate and debugging, operating voltage range is wide, and the present embodiment DC-DC converter unit 60 is preferably buck DC-DC change-over circuit, to widen the scope of application for electric loading.The present embodiment energy collecting device output voltage range is DC6-36V, and this device no-load loss is low, and power supply collecting circuit efficiency can reach more than 90%.
The present embodiment energy collecting device, except can being applied to the micro-collection of energy of friction nanometer power generator, can also be applied in the collection of micro-energy such as numerous vibration, electromagnetism.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, 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 amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. for a friction nanometer power generator energy collecting device, it is characterized in that, comprising:
Rectification unit (20), is connected with the output of friction nanometer power generator (10), in order to receive electric current that described friction nanometer power generator (10) exports and described current commutates is transformed to direct current;
Input energy-storage units (30), is connected with the output of described rectification unit (20), carries out energy storage process for the direct current exported described rectification unit (20);
Energy hole switch element (50), is connected with the output of described input energy-storage units (30), for controlling stored energy and the opportunity of release of described input energy-storage units (30);
DC-DC converter unit (60), is connected with the output of described energy hole switch element (50), and the direct current for described energy hole switch element (50) being exported converts the direct current of voltage constant to;
Export energy-storage units (70), be connected with the output of described DC-DC converter unit (60), for receiving and storing the direct current that described DC-DC converter unit (60) exports.
2. according to described in claim 1 for friction nanometer power generator energy collecting device, it is characterized in that:
The divided current unit (40) of output voltage higher than predetermined threshold value for preventing described input energy-storage units (30) is provided with between described input energy-storage units (30) and described energy hole switch element (50).
3., according to claim 1 for friction nanometer power generator energy collecting device, it is characterized in that,
Described energy hole switch element (50) comprises the first comparator detected for high pressure, for the second comparator that low pressure detects, described first comparator, the output of described second comparator connects the input of rest-set flip-flop respectively, the output of described rest-set flip-flop connects described DC-DC converter unit (60) through OD door, described input energy-storage units (30) is under the control of described energy hole switch element (50), when the voltage on described input energy-storage units (30) is higher than first threshold, OD door exports high level and works with power supply to described output energy-storage units (70) to drive described DC-DC converter unit (60), described input energy-storage units (30) enters discharge regime, when the voltage on described input energy-storage units (30) is lower than Second Threshold, OD door output low level works to stop described DC-DC converter unit (60), described input energy-storage units (30) enters the energy storage stage, and wherein, described first threshold is higher than described Second Threshold.
4., according to claim 1 for friction nanometer power generator energy collecting device, it is characterized in that,
Described friction nanometer power generator (10) is that a friction nanometer power generator or the parallel connection of multiple friction nanometer power generator are formed.
5. according to claim 1ly to it is characterized in that for friction nanometer power generator energy collecting device,
Described output energy-storage units (70) adopts storage capacitor.
6. according to claim 5ly to it is characterized in that for friction nanometer power generator energy collecting device,
Described output energy-storage units (70) comprises more than two or two storage capacitors be connected in series.
7. arbitrary described for friction nanometer power generator energy collecting device according to claim 1 to 6, it is characterized in that,
Described DC-DC converter unit (60) is buck DC-DC change-over circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520839737.2U CN205051595U (en) | 2015-10-27 | 2015-10-27 | Be used for nanogenerator energy collecting device that rubs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520839737.2U CN205051595U (en) | 2015-10-27 | 2015-10-27 | Be used for nanogenerator energy collecting device that rubs |
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| CN205051595U true CN205051595U (en) | 2016-02-24 |
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| CN201520839737.2U Expired - Fee Related CN205051595U (en) | 2015-10-27 | 2015-10-27 | Be used for nanogenerator energy collecting device that rubs |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152630A1 (en) * | 2016-03-09 | 2017-09-14 | 纳智源科技（唐山）有限责任公司 | Energy storage device for friction-based power generator |
| CN110934374A (en) * | 2018-09-25 | 2020-03-31 | 北京纳米能源与系统研究所 | Self-driven step counting shoes |
| CN111313742A (en) * | 2019-01-30 | 2020-06-19 | 北京纳米能源与系统研究所 | Power management module for friction nano generator and intelligent buoy system |
-
2015
- 2015-10-27 CN CN201520839737.2U patent/CN205051595U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152630A1 (en) * | 2016-03-09 | 2017-09-14 | 纳智源科技（唐山）有限责任公司 | Energy storage device for friction-based power generator |
| CN110934374A (en) * | 2018-09-25 | 2020-03-31 | 北京纳米能源与系统研究所 | Self-driven step counting shoes |
| CN111313742A (en) * | 2019-01-30 | 2020-06-19 | 北京纳米能源与系统研究所 | Power management module for friction nano generator and intelligent buoy system |
| CN111313742B (en) * | 2019-01-30 | 2021-07-27 | 北京纳米能源与系统研究所 | Power management module for friction nano generator and intelligent buoy system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20191027 |