CN110112816B - Expandable multi-source environment energy capture interface circuit based on single inductor - Google Patents
Expandable multi-source environment energy capture interface circuit based on single inductor Download PDFInfo
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- CN110112816B CN110112816B CN201910398522.4A CN201910398522A CN110112816B CN 110112816 B CN110112816 B CN 110112816B CN 201910398522 A CN201910398522 A CN 201910398522A CN 110112816 B CN110112816 B CN 110112816B
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- 239000003990 capacitor Substances 0.000 claims abstract description 42
- 238000004146 energy storage Methods 0.000 claims abstract description 34
- 230000007613 environmental effect Effects 0.000 claims abstract description 8
- 239000002551 biofuel Substances 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 102000004207 Neuropilin-1 Human genes 0.000 description 1
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- 238000003306 harvesting Methods 0.000 description 1
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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
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- 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 single-inductance-based expandable multi-source environmental energy capture interface circuit which is characterized by comprising a first direct current source acquisition module, a second direct current source acquisition module, a third direct current source acquisition module, a plurality of fourth direct current source acquisition modules, piezoelectric energy acquisition modules, an inductance, a freewheeling diode, a first energy storage capacitor and a load, wherein the piezoelectric energy acquisition modules correspond to the fourth direct current source acquisition modules in number; the piezoelectric energy and the direct current energy represented by thermoelectric energy, light energy and even biofuel energy can be collected simultaneously by arranging the piezoelectric energy collection modules and the direct current source collection modules, the whole circuit structure is stackable, part of the direct current source modules can be utilized for multiple times and efficiently, the whole circuit is completely self-powered, an additional battery is not needed to be provided, and the energy collection efficiency is greatly improved.
Description
Technical Field
The invention relates to an energy acquisition circuit, in particular to a single-inductor-based expandable multi-source environment energy capture interface circuit.
Background
The environment is full of various energies, so that the energy in the environment can be captured by using a proper energy converter, and after being processed by an interface circuit, an energy management circuit and the like, the energy is supplied to a wireless network node in the Internet of things to realize partial or even complete self-power supply, so that the service life of the wireless network node is prolonged.
At present, common environmental energy capture circuit researches mainly comprise capture interface circuits such as vibration energy, thermoelectric energy, optical energy and microwave energy. However, most of the current researches are mainly aimed at single-energy and single-input interface circuits, such as capture circuits based on piezoelectric vibration energy, and most of the current researches are aimed at single-cantilever structure devices, so that the energy collection efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a single-inductance-based expandable multi-source and environment energy capture interface circuit so as to collect alternating current energy represented by piezoelectric vibration energy and direct current energy represented by thermoelectric energy, optical energy and even biofuel energy.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a scalable multisource environmental energy capture interface circuit based on single inductance, includes first direct current source collection module, second direct current source collection module, third direct current source collection module, a plurality of fourth direct current source collection module, quantity with fourth direct current source collection module's piezoelectric energy collection module, inductance, freewheel diode, first energy storage capacitor and load that corresponds, first direct current source collection module's positive end with one end of inductance be connected, the other end of inductance the negative end of second direct current source collection module and every fourth direct current source collection module's negative end be connected, fourth direct current source collection module's positive end with a corresponding negative end of piezoelectric energy collection module be connected, second direct current source collection module's positive end with freewheel diode's positive pole be connected, freewheel diode's negative pole with third direct current source collection module's negative end be connected, third direct current source collection module's positive end the positive end of first direct current source collection module the negative end the energy storage capacitor of first direct current source collection module and the other end of the positive end of the piezoelectric energy storage module, the load.
The piezoelectric energy collection module comprises a piezoelectric sheet, a first PMOS tube, a second PMOS tube, a first capacitor, a first diode, a second diode, a first NPN tube, a first PNP tube, a second NPN tube and a second PNP tube, wherein the source electrode of the first PMOS tube is connected with the source electrode of the second PMOS tube and is used as the positive end of the piezoelectric energy collection module, the drain electrode of the first PMOS tube, the grid electrode of the second PMOS tube, the 1 foot of the piezoelectric sheet, the cathode of the first diode, the base electrode of the first NPN tube and the collector electrode of the first PNP tube are connected, the drain electrode of the second PMOS tube, the grid electrode of the first NPN tube, the 2 feet of the piezoelectric sheet, the cathode of the second diode, the base electrode of the second NPN tube and the collector electrode of the second NPN tube are connected, the anode of the first PNP tube and the negative end of the first PNP tube are connected, and the base electrode of the second PNP tube and the collector tube are connected, and the other end of the first PNP tube and the second PNP tube is connected.
The first direct current source acquisition module, the second direct current source acquisition module, the third direct current source acquisition module and the fourth direct current source acquisition module have the same structure, the first direct current source acquisition module comprises a direct current transducer and a second energy storage capacitor, a 1 pin of the direct current transducer is connected with one end of the second energy storage capacitor and serves as a positive end of the first direct current source acquisition module, and a 2 pin of the direct current transducer is connected with the other end of the second energy storage capacitor and serves as a negative end of the first direct current source acquisition module.
Compared with the prior art, the invention has the advantages that the piezoelectric energy and various direct current energy sources represented by thermoelectric energy, optical energy and even biofuel energy can be collected simultaneously by arranging a plurality of piezoelectric energy collection modules and a plurality of direct current source collection modules; the energy collection process is divided into three independent processes, firstly, parasitic capacitance inside the piezoelectric sheet is continuously charged in the process that the piezoelectric sheet moves from a zero displacement point to a maximum displacement point, meanwhile, direct current transducers in all direct current source collection modules charge second energy storage capacitors, when the displacement of the piezoelectric sheet reaches the maximum, energy storage on the parasitic capacitance inside the piezoelectric sheet also reaches the maximum, at the moment, a first PNP tube or a second PNP tube in the piezoelectric energy collection module is conducted, so that an inductor, the first direct current source collection module, the piezoelectric energy collection module with the displacement of the piezoelectric sheet reaching the maximum point and a fourth direct current source collection module connected with the piezoelectric sheet form an LC resonant circuit, and energy in the fourth direct current source collection module and the piezoelectric energy collection module in the LC resonant circuit is transferred onto the inductor through 1/4 LC resonant cycles, at the moment, a first PNP tube or a second PNP tube in the piezoelectric energy collection module is cut off immediately, and then the first direct current source collection module, the inductance, the second direct current source collection module, the third direct current source collection module and the first energy storage capacitor collection module are formed into the first direct current source collection module and the first direct current source collection module; the three processes are completely independent, and the direct current transducer and the load have no direct path, so that the energy collection efficiency is not influenced by load change, and the whole circuit structure can be overlapped, namely, each direct current source collection module or each piezoelectric energy collection module can be increased or reduced according to actual application scenes, so that the energy collection device is suitable for different application scenes.
Drawings
FIG. 1 is a schematic diagram of a circuit structure of the present invention;
FIG. 2 is a circuit block diagram of a medium voltage power harvesting module of the present invention;
fig. 3 is a circuit diagram of a first dc source acquisition module according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The utility model provides a multisource environmental energy capture interface circuit based on single inductance L's can extend, including first direct current source collection module U1, second direct current source collection module U2, third direct current source collection module U3, a plurality of fourth direct current source collection module U4, piezoelectric energy collection module P1 that quantity and fourth direct current source collection module U4 correspond, inductance L, freewheel diode D, first energy storage capacitor Csto and load RL, first direct current source collection module U1's positive end is connected with inductance L's one end, inductance L's the other end, second direct current source collection module U2's negative end and every fourth direct current source collection module U4's negative end are connected, fourth direct current source collection module U4's positive end is connected with the negative end of a piezoelectric energy collection module P1 that corresponds, second direct current source collection module U2's positive end is connected with diode D's positive pole, third direct current source collection module U3's negative end is connected with third direct current source collection module RL's negative end, third direct current source module U3's positive end, energy storage capacitor RL's positive end and energy storage capacitor Csto, load end is connected to the positive end, load end 53, load end is gathered to the other end of a direct current source collection module P1.
The piezoelectric energy collection module P1 includes a piezoelectric plate PZT, a first PMOS tube PM1, a second PMOS tube PM2, a first capacitor C1, a first diode D1, a second diode D2, a first NPN tube Q1, a first PNP tube Q2, a second NPN tube Q3, and a second PNP tube Q4, where a source of the first PMOS tube PM1 is connected to a source of the second PMOS tube PM2 and serves as a positive terminal of the piezoelectric energy collection module P1, a drain of the first PMOS tube PM1, a gate of the second PMOS tube PM2, a pin 1 of the piezoelectric plate PZT, a cathode of the first diode D1, a base of the first NPN tube Q1, and a collector of the first PNP tube Q2, a drain of the second PMOS tube PM2, a gate of the first NPN tube PM1, a pin of the second NPN tube Q2, a cathode of the second NPN tube Q3, a base of the second NPN tube Q4, a collector of the second NPN tube Q4, an anode of the first diode Q1, and a cathode of the first NPN tube Q1 and a collector of the second PNP tube Q2, and a collector of the first NPN tube Q2 connected to a negative terminal of the first capacitor C1 and a base of the second PNP tube Q2.
The first direct current source acquisition module U1, the second direct current source acquisition module U2, the third direct current source acquisition module U3 and the fourth direct current source acquisition module U4 are identical in structure, the first direct current source acquisition module U1 comprises a direct current transducer U and a second energy storage capacitor Ct, a1 foot of the direct current transducer U is connected with one end of the second energy storage capacitor Ct and serves as the positive end of the first direct current source acquisition module U1, and a2 foot of the direct current transducer U is connected with the other end of the second energy storage capacitor Ct and serves as the negative end of the first direct current source acquisition module U1.
The working principle of the above embodiment is as follows: taking the piezoelectric energy collection module P1 as an example, in a positive half period, namely when the voltage of the 1 foot of the piezoelectric plate PZT is higher than the voltage of the 2 feet, in the first direct current source collection module U1, the second direct current source collection module U2, the third direct current source collection module U3 and the fourth direct current source collection module U4, the direct current transducer U collects environmental energy to charge the second energy storage capacitor Ct, in the piezoelectric energy collection module P1, the voltage of the 2 feet of the piezoelectric plate PZT is connected with the grid electrode of the first PMOS tube PM1, when the difference between the voltage of the 1 foot of the piezoelectric plate PZT and the voltage of the 2 feet is higher than the threshold voltage, the first PMOS tube PM1 is conducted, the 1 foot of the high potential of the piezoelectric plate PZT is grounded, as the differential pressure at two ends of the piezoelectric plate PZT gradually increases, the potential difference at two ends of the first capacitor C1 also continuously increases until the differential pressure at two ends of the piezoelectric plate PZT reaches a peak value, and then the differential pressure at two ends of the piezoelectric plate PZT begins to decrease, but because the electric charge on the first capacitor C1 is not released by a loop, the differential pressure of the capacitor C1 remains unchanged until the differential pressure between the two ends is greater than the conducting voltage of the NPN tube and the second NPN tube and the voltage is conducted by the voltage and the second NPN tube and 3 is conducted, so that the voltage is conducted and the voltage is turned on and 4 is turned on; at this time, the fourth dc source collecting module U4 and the first dc source collecting module U1 will form an LC resonant circuit with the second storage capacitor Ct, the inductance L, and the second PNP transistor Q4, the piezoelectric plate PZT, and the first PMOS transistor PM1 in the piezoelectric energy collecting module P1, and the circuit may transfer the charges accumulated on the PZT internal parasitic capacitance, the first dc source collecting module U1, and the second storage capacitor Ct in the first dc source collecting module U1 to the inductance L after 1/4 LC resonant cycles; when the current on the inductor L reaches the maximum value, the charge on the first capacitor C1 is released completely, so that the second PNP tube Q4 is disconnected, namely the LC resonant circuit is disconnected, and then the inductor L, the second energy storage capacitor Ct in the first direct current source acquisition module U1, the second direct current source acquisition module U2 and the third direct current source acquisition module U3, the freewheeling diode D and the first energy storage capacitor Csto form a circuit, and the energy accumulated on the second energy storage capacitor Ct in the first direct current source acquisition module U1, the second direct current source acquisition module U2 and the third direct current source acquisition module U3 and the energy accumulated on the inductor L flow to the first energy storage capacitor Csto through the freewheeling diode D, so that the energy extraction of a positive half cycle is realized;
In a negative half period, namely when the voltage difference between the voltage of the 2 feet of the piezoelectric plate PZT and the voltage of the 1 feet is higher than the voltage of the 1 feet, in a first direct current source acquisition module U1, a second direct current source acquisition module U2, a third direct current source acquisition module U3 and a fourth direct current source acquisition module U4, the direct current transducer U acquires environmental energy to charge a second energy storage capacitor Ct, in a piezoelectric energy acquisition module P1, the voltage of the 1 feet of the piezoelectric plate PZT is connected with the grid electrode of a second PMOS tube PM2, when the voltage difference between the voltage of the 2 feet of the piezoelectric plate PZT and the voltage of the 1 feet is higher than the threshold voltage, the second PMOS tube PM2 is conducted, the voltage difference between the high potential 2 feet of the piezoelectric plate is grounded, as the voltage difference between the two ends of the piezoelectric plate PZT is gradually increased until the voltage difference between the two ends of the piezoelectric plate PZT reaches a peak value, and then the voltage difference between the two ends of the piezoelectric plate PZT begins to decrease, but the voltage difference between the two ends of the piezoelectric plate PZT is not released by a loop, so that the voltage difference between the threshold voltage of the voltage and the voltage of a diode and the voltage difference is larger than that of the first NPN P1, and the voltage difference, and the first NPN 1, so that the conduction of the voltage is conducted, and the first and Q1 is conducted, and the conduction state is caused by the first transistor Q1; at this time, the fourth dc source collecting module U4 and the second energy storage capacitor Ct in the first dc source collecting module U1, the inductor L, and the first PNP transistor Q2, the piezoelectric sheet PZT, and the second PMOS transistor PM2 in the piezoelectric energy collecting module P1 will form an LC resonant circuit, and the circuit passes through 1/4 LC resonant cycles, so that the charges accumulated on the parasitic capacitance in the piezoelectric sheet PZT, the second energy storage capacitor Ct in the first dc source collecting module U1 and the first dc source collecting module U1 can be transferred to the inductor; when the current on the inductor L reaches the maximum value, the charge on the first capacitor C1 is released, so that the first PNP tube Q2 is disconnected, namely the LC resonant circuit is disconnected, then the inductor L, the second energy storage capacitor Ct in the first direct current source acquisition module U1, the second direct current source acquisition module U2 and the third direct current source acquisition module U3, the freewheeling diode D and the first energy storage capacitor Csto form a circuit, and the energy accumulated on the second energy storage capacitor Ct in the first direct current source acquisition module U1, the second direct current source acquisition module U2 and the third direct current source acquisition module U3 and the energy accumulated on the inductor L flow to the first energy storage capacitor Csto through the freewheeling diode D, so that the energy extraction of a negative half cycle is realized.
Claims (2)
1. The utility model provides a scalable multisource environmental energy capture interface circuit based on single inductance, its characterized in that includes first direct current source collection module, second direct current source collection module, third direct current source collection module, a plurality of fourth direct current source collection module, quantity with the piezoelectric energy collection module that the fourth direct current source collection module corresponds, inductance, freewheel diode, first energy storage capacitor and load, the positive end of first direct current source collection module with the one end of inductance is connected, the negative end of inductance, the negative end of second direct current source collection module and each the negative end of fourth direct current source collection module connect, the positive end of fourth direct current source collection module with the negative end of corresponding one piezoelectric energy collection module, the positive end of second direct current source collection module with the positive pole of freewheel diode be connected, the negative pole of freewheel diode with the negative end of third direct current source collection module be connected, the positive end of third direct current source collection module the positive end, the energy storage capacitor's of energy storage module and the one end of piezoelectric energy collection module, the other end of load are all connected;
The piezoelectric energy collection module comprises a piezoelectric sheet, a first PMOS tube, a second PMOS tube, a first capacitor, a first diode, a second diode, a first NPN tube, a first PNP tube, a second NPN tube and a second PNP tube, wherein the source electrode of the first PMOS tube is connected with the source electrode of the second PMOS tube and is used as the positive end of the piezoelectric energy collection module, the drain electrode of the first PMOS tube, the grid electrode of the second PMOS tube, the 1 foot of the piezoelectric sheet, the cathode of the first diode, the base electrode of the first NPN tube and the collector electrode of the first PNP tube are connected, the drain electrode of the second PMOS tube, the grid electrode of the first NPN tube, the 2 feet of the piezoelectric sheet, the cathode of the second diode, the base electrode of the second NPN tube and the collector electrode of the second NPN tube are connected, the anode of the first PNP tube and the negative end of the first PNP tube are connected, and the base electrode of the second PNP tube and the collector tube are connected, and the other end of the first PNP tube and the second PNP tube is connected.
2. The expandable multi-source environmental energy capture interface circuit based on single inductor is characterized in that the first direct current source acquisition module, the second direct current source acquisition module, the third direct current source acquisition module and the fourth direct current source acquisition module have the same structure, the first direct current source acquisition module comprises a direct current transducer and a second energy storage capacitor, a1 pin of the direct current transducer is connected with one end of the second energy storage capacitor and serves as a positive end of the first direct current source acquisition module, and a 2 pin of the direct current transducer is connected with the other end of the second energy storage capacitor and serves as a negative end of the first direct current source acquisition module.
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| CN112003358B (en) * | 2020-07-15 | 2022-04-05 | 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715941A (en) * | 2014-01-07 | 2014-04-09 | 太原理工大学 | Multi-cantilever-beam piezoelectric transducer circuit |
| CN105573191A (en) * | 2014-11-07 | 2016-05-11 | 刘一迈 | Energy acquisition method and device |
| CN107612421A (en) * | 2017-09-21 | 2018-01-19 | 宁波大学 | A kind of piezoelectric type vibration energy acquisition circuit |
| CN108233766A (en) * | 2018-01-29 | 2018-06-29 | 宁波大学 | A kind of energy composite energy Acquisition Circuit |
| CN108258811A (en) * | 2018-01-29 | 2018-07-06 | 宁波大学 | A kind of energy composite energy Acquisition Circuit |
| CN108365603A (en) * | 2018-03-08 | 2018-08-03 | 中国科学院微电子研究所 | Energy collecting system for acquiring vibrational energy and thermal energy simultaneously |
| CN210608656U (en) * | 2019-05-14 | 2020-05-22 | 宁波大学 | Scalable multi-source environment energy capture interface circuit based on single inductor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8368290B2 (en) * | 2010-05-18 | 2013-02-05 | Georgia Tech Research Corporation | Rectifier-free piezoelectric energy harverster and battery charger |
| US10044218B2 (en) * | 2015-11-10 | 2018-08-07 | Eugen Tiefnig | Micro-energy harvester for battery free applications |
-
2019
- 2019-05-14 CN CN201910398522.4A patent/CN110112816B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715941A (en) * | 2014-01-07 | 2014-04-09 | 太原理工大学 | Multi-cantilever-beam piezoelectric transducer circuit |
| CN105573191A (en) * | 2014-11-07 | 2016-05-11 | 刘一迈 | Energy acquisition method and device |
| CN107612421A (en) * | 2017-09-21 | 2018-01-19 | 宁波大学 | A kind of piezoelectric type vibration energy acquisition circuit |
| CN108233766A (en) * | 2018-01-29 | 2018-06-29 | 宁波大学 | A kind of energy composite energy Acquisition Circuit |
| CN108258811A (en) * | 2018-01-29 | 2018-07-06 | 宁波大学 | A kind of energy composite energy Acquisition Circuit |
| CN108365603A (en) * | 2018-03-08 | 2018-08-03 | 中国科学院微电子研究所 | Energy collecting system for acquiring vibrational energy and thermal energy simultaneously |
| CN210608656U (en) * | 2019-05-14 | 2020-05-22 | 宁波大学 | Scalable multi-source environment energy capture interface circuit based on single inductor |
Non-Patent Citations (2)
| Title |
|---|
| A synchronous charge extraction piezoelectric energy harvesting circuit based on precision active control peak detection with supplement energy;Xiudeng Wang;《2017 IEEE 12th International Conference on ASIC (ASICON)》;全文 * |
| 自供电的压电振动能与温差热电能融合采集电路设计;王修登;夏银水;施阁;夏桦康;陈志栋;叶益迭;钱利波;;传感技术学报(第04期);全文 * |
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