CN110112816A - A kind of prolongable multi-source environment energy capture interface circuit based on single inductance - Google Patents
A kind of prolongable multi-source environment energy capture interface circuit based on single inductance Download PDFInfo
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- CN110112816A CN110112816A CN201910398522.4A CN201910398522A CN110112816A CN 110112816 A CN110112816 A CN 110112816A CN 201910398522 A CN201910398522 A CN 201910398522A CN 110112816 A CN110112816 A CN 110112816A
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- acquisition module
- source acquisition
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- 239000003990 capacitor Substances 0.000 claims abstract description 54
- 238000004146 energy storage Methods 0.000 claims description 2
- 239000002551 biofuel Substances 0.000 abstract description 3
- 230000002459 sustained effect Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a kind of prolongable multi-source environment energy capture interface circuit based on single inductance, feature be include the first DC source acquisition module, the second DC source acquisition module, third DC source acquisition module, multiple 4th DC source acquisition modules, quantity pressure electric energy collection module corresponding with the 4th DC source acquisition module, inductance, freewheeling diode, the first storage capacitor and load；Advantage is by the way that multiple pressure electric energy collection modules and multiple DC source acquisition modules is arranged, it a variety of can be acquired to piezoelectricity energy and simultaneously for the once-through type energy of representative with temperature-difference thermoelectric energy, luminous energy or even bio-fuel, and entire circuit structure is stackable, Partial DC source module repeatedly can be utilized efficiently, integrated circuit is completely self-powered, it does not need to provide additional battery, substantially increases the efficiency of energy acquisition.
Description
Technical field
The present invention relates to a kind of energy acquisition circuit, specially a kind of prolongable multi-source environment energy based on single inductance
Capture interface circuit.
Background technique
It is filled with diversified energy in environment, therefore suitable energy converter can be used to capture in environment
Energy, and by interface circuit, after the processing such as energy management circuit, the wireless network node supplied in Internet of Things is allowed to achievement unit
Point so complete self-powered, to extend the service life of wireless network node
Currently, common environmental energy capture circuit research mainly includes the prisoner such as vibrational energy, temperature-difference thermoelectric energy, luminous energy and microwave energy
Obtain interface circuit.However current research is mainly optimized both for the interface circuit of single energy, single input, such as based on
The capture circuit of piezoelectric vibration energy, device of the most of research at present both for single cantilever beam structure, energy acquisition effect
Rate is not high.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of prolongable multi-source based on single inductance, environmental energies to capture
Obtain interface circuit, so as to collect with piezoelectric vibration can for representative the AC type energy and with temperature-difference thermoelectric energy, luminous energy or even
Bio-fuel can be the once-through type energy of representative.
The technical scheme of the invention to solve the technical problem is: a kind of prolongable multi-source based on single inductance
Environmental energy captures interface circuit, including the acquisition of the first DC source acquisition module, the second DC source acquisition module, third DC source
Module, multiple 4th DC source acquisition modules, quantity pressure electric energy acquisition mould corresponding with the 4th DC source acquisition module
Block, inductance, freewheeling diode, the first storage capacitor and load, the anode of the first DC source acquisition module and described
One end of inductance connects, the other end of the inductance, the negative terminal of the second DC source acquisition module and each described
The negative terminal of 4th DC source acquisition module connects, the anode of the 4th DC source acquisition module with described in corresponding one
Press the negative terminal connection of electric energy collection module, the sun of the anode of the second DC source acquisition module and the freewheeling diode
Pole connection, the cathode of the freewheeling diode are connect with the negative terminal of the third DC source acquisition module, the third
One end of the anode of DC source acquisition module, one end of first storage capacitor and the load connects, and described the
The other end of one storage capacitor, the other end of the load, the negative terminal of the first DC source acquisition module and described
The anode of pressure electric energy collection module is grounded.
The pressure electric energy collection module includes piezoelectric patches, the first PMOS tube, the second PMOS tube, first capacitor, the one or two
Pole pipe, the second diode, the first NPN pipe, the first PNP pipe, the 2nd NPN pipe and the second PNP pipe, the source of first PMOS tube
Pole is connect with the source electrode of second PMOS tube and the anode as the pressure electric energy collection module, the first PMOS
The drain electrode of pipe, the grid of second PMOS tube, 1 foot of the piezoelectric patches, the first diode cathode, described
The first NPN pipe base stage and first PNP pipe collector connection, it is the drain electrode of second PMOS tube, described
The grid of first PMOS tube, 2 feet of the piezoelectric patches, the cathode of second diode, the 2nd NPN pipe base
The connection of the collector of pole and second PNP pipe, the transmitting of the anode of the first diode, the first NPN pipe
Pole and one end of the first capacitor connection, the other end of the first capacitor, second diode anode and
The emitter of the 2nd NPN pipe connects, and the base stage of the collector of the first NPN pipe and first PNP pipe connects
It connects, the collector of the 2nd NPN pipe is connect with the base stage of second PNP pipe, the emitter of first PNP pipe
It is connect with the emitter of second PNP pipe and the negative terminal as the pressure electric energy collection module.
The first DC source acquisition module, the second DC source acquisition module, the third DC source are adopted
Collection module is identical with the structure of the 4th DC source acquisition module, and the first DC source acquisition module includes that direct current changes
Energy device and the second storage capacitor, 1 foot of the direct-current transducer is connect with one end of second storage capacitor and conduct
The anode of the first DC source acquisition module, 2 feet of the direct-current transducer are another with second storage capacitor
One end connection and the negative terminal as the first DC source acquisition module.
Compared with the prior art, the advantages of the present invention are as follows by the way that multiple pressure electric energy collection modules and multiple DC sources is arranged
Acquisition module, can to piezoelectricity energy and it is a variety of with temperature-difference thermoelectric energy, luminous energy or even bio-fuel can be the once-through type energy of representative
It is acquired simultaneously；Energy acquisition process is divided into three independent processes, firstly, piezoelectric patches is from zero shift point to maximum displacement point
In mobile process, the parasitic capacitance inside piezoelectric patches is constantly charged, at the same time, in all DC source acquisition modules
Direct-current transducer also charge to the second storage capacitor, when the displacement of piezoelectric patches reaches maximum, piezoelectric patches endophyte electricity
Energy storage in appearance has also reached maximum value, presses the first PNP pipe or the conducting of the second PNP pipe in electric energy collection module at this time, leads
Send a telegraph sense, the first DC source acquisition module, piezoelectric patches displacement reach the pressure electric energy collection module of maximum point and be connected in series with it
4th DC source acquisition module forms a LC resonance circuit, by 1/4 LC resonance period, the 4th direct current in LC resonance circuit
Energy in source acquisition module and pressure electric energy collection module has all been transferred on inductance, and immediately electric energy acquisition mould is pressed in shutdown at this time
The first PNP pipe or the second PNP pipe in block, then the first DC source acquisition module, inductance, the second DC source acquisition module,
Freewheeling diode, third DC source acquisition module and the first storage capacitor forming circuit, by the first DC source acquisition module, electricity
Feel, the energy transfer on the second DC source acquisition module and third DC source acquisition module to the first storage capacitor；Three above
Process is completely independent, direct-current transducer and the no direct access of load, therefore the efficiency of energy acquisition is not by load variation
It influences, and entire circuit structure is stackable, it can increase or decrease each DC source according to actual application scenarios
Acquisition module or pressure electric energy collection module, to be applicable in different application scenarios.
Detailed description of the invention
Fig. 1 is electrical block diagram of the invention；
Fig. 2 is the circuit structure diagram that electric energy collection module is pressed in the present invention；
Fig. 3 is the circuit structure diagram of the first DC source acquisition module in the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
A kind of prolongable multi-source environment energy capture interface circuit based on single inductance L, including the acquisition of the first DC source
Module U1, the second DC source acquisition module U2, third DC source acquisition module U3, multiple 4th DC source acquisition module U4, number
Measure pressure electric energy collection module P1 corresponding with the 4th DC source acquisition module U4, inductance L, sustained diode, the first storage capacitor
Csto and load RL, the anode of the first DC source acquisition module U1 are connect with one end of inductance L, and the other end of inductance L, second are directly
The connection of the negative terminal of the negative terminal of stream source acquisition module U2 and each 4th DC source acquisition module U4, the 4th DC source acquisition module U4
Anode press the negative terminal of electric energy collection module P1 to connect with corresponding one, the anode of the second DC source acquisition module U2 and afterflow
The anode of diode D connects, and the cathode of sustained diode is connect with the negative terminal of third DC source acquisition module U3, third direct current
One end connection of the anode of source acquisition module U3, one end of the first storage capacitor Csto and load RL, the first storage capacitor Csto
The other end, load the other end of RL, the first DC source acquisition module U1 negative terminal and press the anode of electric energy collection module P1 equal
Ground connection.
Pressure electric energy collection module P1 include piezoelectric patches PZT, the first PMOS tube PM1, the second PMOS tube PM2, first capacitor C1,
First diode D1, the second diode D2, the first NPN pipe Q1, the first PNP pipe Q2, the 2nd NPN pipe Q3 and the second PNP pipe Q4, the
The source electrode of one PMOS tube PM1 is connect with the source electrode of the second PMOS tube PM2 and the anode as pressure electric energy collection module P1, and first
The drain electrode of PMOS tube PM1, the grid of the second PMOS tube PM2,1 foot of piezoelectric patches PZT, the cathode of first diode D1, the first NPN
The connection of the collector of the base stage of pipe Q1 and the first PNP pipe Q2, the drain electrode of the second PMOS tube PM2, the first PMOS tube PM1 grid,
The collector connection of 2 feet of piezoelectric patches PZT, the cathode of the second diode D2, the base stage of the 2nd NPN pipe Q3 and the second PNP pipe Q4,
One end of the anode of first diode D1, the emitter of the first NPN pipe Q1 and first capacitor C1 connects, and first capacitor C1's is another
The emitter connection at end, the anode of the second diode D2 and the 2nd NPN pipe Q3, the collector and the first PNP pipe of the first NPN pipe Q1
The base stage of Q2 connects, and the collector of the 2nd NPN pipe Q3 is connect with the base stage of the second PNP pipe Q4, the emitter of the first PNP pipe Q2 and
The emitter of second PNP pipe Q4 connects and the negative terminal as pressure electric energy collection module P1.
First DC source acquisition module U1, the second DC source acquisition module U2, third DC source acquisition module U3 and the 4th
The structure of DC source acquisition module U4 is identical, and the first DC source acquisition module U1 includes direct-current transducer U and the second storage capacitor
1 foot of Ct, direct-current transducer U connect with one end of the second storage capacitor Ct and as the first DC source acquisition module U1 just
End, 2 feet of direct-current transducer U connect with the other end of the second storage capacitor Ct and as the negative of the first DC source acquisition module U1
End.
The working principle of above embodiments is as follows: for pressing electric energy collection module P1, in positive half period, i.e. and piezoelectric patches
It is straight in the first DC source acquisition module U1, the second DC source acquisition module U2, third when the 1 foot voltage of PZT is higher than 2 foot voltage
In stream source acquisition module U3 and the 4th DC source acquisition module U4, direct-current transducer U acquires environmental energy to the second storage capacitor
Ct charging, in pressure electric energy collection module P1, the 2 foot voltages of piezoelectric patches PZT connect the grid of the first PMOS tube PM1, work as piezoelectric patches
When the 1 foot voltage of PZT and the difference of 2 foot voltages exceed threshold voltage, the first PMOS tube PM1 conducting, piezoelectric patches PZT high potential
1 foot ground connection, as the pressure difference at the both ends piezoelectric patches PZT gradually increases, the both ends potential difference of first capacitor C1 also constantly increases, until
The both ends piezoelectric patches PZT pressure difference reaches peak value, and the both ends piezoelectric patches PZT pressure difference starts to reduce later, but due to product on first capacitor C1
Tired charge does not have circuit release, therefore the pressure difference of capacitor C1 remains unchanged, until difference in voltage between the two is managed greater than NPN
Threshold voltage and the sum of the conduction voltage drop of diode, the 2nd NPN pipe Q3 is connected at this time, so as to cause the second PNP pipe Q4 conducting；
At this point, the second storage capacitor Ct, inductance L and piezoelectricity in the 4th DC source acquisition module U4 and the first DC source acquisition module U1
The second PNP pipe Q4, piezoelectric patches PZT, the first PMOS tube PM1 in energy acquisition module P1 will constitute a LC resonance circuit, and
And 1/4 LC resonance period is passed through in the circuit, it can be by PZT internal parasitic capacitances, the first DC source acquisition module U1 and first
In the electric charge transfer to inductance L accumulated on the second storage capacitor Ct in DC source acquisition module U1；When the electric current on inductance L reaches
When to maximum value, the charge release on first capacitor C1 is finished, and causes the second PNP pipe Q4 to disconnect, i.e., LC resonance circuit disconnects, so
Afterwards in inductance L, the first DC source acquisition module U1, the second DC source acquisition module U2 and third DC source acquisition module U3
Second storage capacitor Ct, sustained diode and the first storage capacitor Csto constitute circuit, the first DC source acquisition module U1, the
The energy and inductance L accumulated on the second storage capacitor Ct in two DC source acquisition module U2, third DC source acquisition module U3
The energy of upper accumulation flows to the first storage capacitor Csto by sustained diode, to realize the Energy extraction of positive half period；
In negative half-cycle, i.e. when the 2 foot voltages of piezoelectric patches PZT are higher than 1 foot voltage, in the first DC source acquisition module U1, the
In two DC source acquisition module U2, third DC source acquisition module U3 and the 4th DC source acquisition module U4, direct-current transducer U is adopted
Collect environmental energy to charge to the second storage capacitor Ct, in pressure electric energy collection module P1, the 1 foot voltage of piezoelectric patches PZT connects second
The grid of PMOS tube PM2, when the difference of the 2 foot voltages of piezoelectric patches PZT and 1 foot voltage exceeds threshold voltage, the second PMOS tube
PM2 conducting, the 2 feet ground connection of piezoelectric patches PZT high potential, as the pressure difference at the both ends piezoelectric patches PZT gradually increases, first capacitor C1's
Both ends potential difference also constantly increases, until the both ends piezoelectric patches PZT pressure difference reaches peak value, the both ends piezoelectric patches PZT pressure difference starts later
Reduce, but since the charge accumulated on first capacitor C1 does not have circuit release, the pressure difference of capacitor C1 is remained unchanged, until two
Difference in voltage between person is greater than the sum of threshold voltage and conduction voltage drop of diode of NPN pipe, and the first NPN pipe Q1 is led at this time
It is logical, so as to cause 1PNP pipe Q2 conducting；At this point, in the 4th DC source acquisition module U4 and the first DC source acquisition module U1
Second storage capacitor Ct, inductance L and the first PNP pipe Q2, piezoelectric patches PZT, the second PMOS tube PM2 in pressure electric energy collection module P1
A LC resonance circuit will be constituted, and 1/4 LC resonance period is passed through in the circuit, it can be by piezoelectric patches PZT endophyte
The charge accumulated on the second storage capacitor Ct in capacitor, the first DC source acquisition module U1 and the first DC source acquisition module U1
It is transferred on inductance；When the electric current on inductance L reaches maximum value, the charge release on first capacitor C1 is finished, and leads to first
PNP pipe Q2 is disconnected, i.e., LC resonance circuit disconnects, and then inductance L, the first DC source acquisition module U1, the second DC source acquire mould
Block U2 and the second storage capacitor Ct, sustained diode and the first storage capacitor Csto in third DC source acquisition module U3
Constitute circuit, the first DC source acquisition module U1, the second DC source acquisition module U2, the in third DC source acquisition module U3
The energy accumulated on the energy and inductance L accumulated on two storage capacitor Ct flows to the first storage capacitor by sustained diode
Csto, to realize the Energy extraction of negative half-cycle.
Claims (3)
1. a kind of prolongable multi-source environment energy capture interface circuit based on single inductance, it is characterised in that including the first direct current
Source acquisition module, the second DC source acquisition module, third DC source acquisition module, multiple 4th DC source acquisition modules, quantity
Pressure electric energy collection module corresponding with the 4th DC source acquisition module, inductance, freewheeling diode, the first storage capacitor and
Load, the anode of the first DC source acquisition module are connect with one end of the inductance, the other end of the inductance,
The negative terminal connection of the negative terminal of the second DC source acquisition module and each 4th DC source acquisition module, it is described
The anode of 4th DC source acquisition module is connected with the negative terminal of pressure electric energy collection module described in corresponding one, and described second
The anode of DC source acquisition module is connect with the anode of the freewheeling diode, the cathode of the freewheeling diode with it is described
Third DC source acquisition module negative terminal connection, the anode of the third DC source acquisition module, first energy storage
One end of capacitor and the connection of one end of the load, the other end of first storage capacitor, the load it is another
The anode at end, the negative terminal of the first DC source acquisition module and the pressure electric energy collection module is grounded.
2. a kind of prolongable multi-source environment energy capture interface circuit based on single inductance, feature exist according to claim 1
In the pressure electric energy collection module include piezoelectric patches, the first PMOS tube, the second PMOS tube, first capacitor, first diode,
Two diodes, the first NPN pipe, the first PNP pipe, the 2nd NPN pipe and the second PNP pipe, the source electrode of first PMOS tube and institute
The source electrode for the second PMOS tube stated connects and the anode as the pressure electric energy collection module, the leakage of first PMOS tube
Pole, the grid of second PMOS tube, 1 foot of the piezoelectric patches, the cathode of the first diode, described first
The connection of the collector of the base stage of NPN pipe and first PNP pipe, the drain electrode of second PMOS tube, described first
The grid of PMOS tube, 2 feet of the piezoelectric patches, the cathode of second diode, the 2nd NPN pipe base stage and
The collector of second PNP pipe connects, the anode of the first diode, the first NPN pipe emitter and
One end of the first capacitor connects, the other end of the first capacitor, the anode of second diode and described
The 2nd NPN pipe emitter connection, the collector of the first NPN pipe connect with the base stage of first PNP pipe, institute
The collector for the 2nd NPN pipe stated is connect with the base stage of second PNP pipe, the emitter of first PNP pipe and institute
The emitter for the second PNP pipe stated connects and the negative terminal as the pressure electric energy collection module.
3. a kind of prolongable multi-source environment energy capture interface circuit based on single inductance, feature exist according to claim 1
In the first DC source acquisition module, the second DC source acquisition module, the third DC source acquisition module
It is identical with the structure of the 4th DC source acquisition module, the first DC source acquisition module include direct-current transducer and
Second storage capacitor, 1 foot of the direct-current transducer are connect and with one end of second storage capacitor as described
The other end of the anode of first DC source acquisition module, 2 feet of the direct-current transducer and second storage capacitor connects
It connects and the negative terminal as the first DC source acquisition module.
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| CN201910398522.4A CN110112816B (en) | 2019-05-14 | 2019-05-14 | Expandable multi-source environment energy capture interface circuit based on single inductor |
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| CN201910398522.4A CN110112816B (en) | 2019-05-14 | 2019-05-14 | Expandable multi-source environment energy capture interface circuit based on single inductor |
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| CN110112816A true CN110112816A (en) | 2019-08-09 |
| CN110112816B CN110112816B (en) | 2024-05-10 |
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| CN112003358A (en) * | 2020-07-15 | 2020-11-27 | 宁波大学 | Multi-input environment energy collecting circuit capable of synchronously extracting |
| CN112039368A (en) * | 2020-07-22 | 2020-12-04 | 宁波大学 | Expandable energy capture interface circuit based on overturning voltage-multiplying charge extraction |
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