CN111831042B - Energy collecting and conditioning system - Google Patents
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- CN111831042B CN111831042B CN202010668907.0A CN202010668907A CN111831042B CN 111831042 B CN111831042 B CN 111831042B CN 202010668907 A CN202010668907 A CN 202010668907A CN 111831042 B CN111831042 B CN 111831042B
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- 230000003750 conditioning effect Effects 0.000 title claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 93
- 238000003306 harvesting Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 19
- 230000005669 field effect Effects 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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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 present application relates to an energy harvesting conditioning system. The energy collecting and conditioning system comprises an energy storage circuit, a comparison circuit and a switch circuit. And the input end of the comparison circuit is connected with the output end of the energy storage circuit. And the controlled end of the switch circuit is connected with the output end of the comparison circuit. And the potential end of the switching circuit is connected with the input end of the energy storage circuit. And the comparison circuit controls the working state of the switch circuit according to the value of the output voltage of the energy storage circuit, so as to control the working state of the energy storage circuit. The energy collecting and conditioning system provided by the application utilizes the voltage of the energy storage circuit as the input voltage of the comparison circuit, does not need to be externally connected with other power supplies, and reduces the complexity of the circuit.
Description
Technical Field
The application relates to the field of circuit control, in particular to an energy collection conditioning system.
Background
With the continuous consumption of petrochemical energy and the increasing environmental pollution, the demand of human beings for new clean and renewable energy is increasing. Solar energy is a hotspot of new energy research due to the characteristics of wide distribution, easy acquisition, high cleaning efficiency, sustainability and the like.
Because solar energy has the defects of strong output intermittence, large influence by external environmental factors, unsuitability for indoor use and the like, the power supply reliability of the sensor is difficult to ensure by singly using the power supply mode. Therefore, the solar energy can be directly supplied with power to be matched with the energy storage element for use. Namely, the energy in the solar cell is collected into the energy storage element to supply power to the electric equipment. The conventional energy collecting and conditioning system needs an additional power supply to supply energy so as to ensure that the energy storage element works in a threshold voltage range.
Disclosure of Invention
Based on this, the application provides an energy harvesting and conditioning system, aiming at the problem that the conventional energy harvesting and conditioning system needs an additional power supply to provide energy so as to ensure that the energy storage element works in the threshold voltage range.
An energy harvesting conditioning system comprising:
a tank circuit;
the input end of the comparison circuit is connected with the output end of the energy storage circuit; and
the controlled end of the switching circuit is connected with the output end of the comparison circuit, and the potential end of the switching circuit is connected with the input end of the energy storage circuit;
the comparison circuit controls the working state of the switch circuit according to the value of the output voltage of the energy storage circuit, and then controls the working state of the energy storage circuit.
In one embodiment, the tank circuit comprises:
a power supply element connected in parallel with the switching circuit; and
the first end of the energy storage element is connected with the input end of the power supply element, the second end of the energy storage element is grounded, and the first end of the energy storage element is the output end of the energy storage circuit.
In one embodiment, the comparison circuit comprises:
the input end of the first divider resistor is connected with the first end of the energy storage element, and the input end of the first divider resistor is the first input end of the comparison circuit;
the input end of the second voltage-dividing resistor is connected with the output end of the first voltage-dividing resistor, and the output end of the second voltage-dividing resistor is grounded; and
the input end of the feedback resistor is connected with the output end of the first divider resistor; and
the first input end of the operational amplifier is connected with the output end of the first voltage-dividing resistor, the output end of the operational amplifier is connected with the output end of the feedback resistor, and the output end of the operational amplifier is the output end of the comparison circuit.
In one embodiment, the method further comprises the following steps:
and the input end of the linear voltage stabilizer is connected with the first end of the energy storage element, and the output end of the linear voltage stabilizer is connected with the second input end of the operational amplifier.
In one embodiment, the method further comprises the following steps:
and the input end of the voltage-multiplying rectifying circuit is connected with the input end of the power supply element, and the output end of the voltage-multiplying rectifying circuit is grounded.
In one embodiment, the voltage-doubler rectification circuit comprises:
the anode of the first diode is connected with the input end of the power supply element, and the cathode of the first diode is connected with the first end of the energy storage element;
a first end of the first rectifying capacitor is connected with the cathode of the first diode, and a second end of the first rectifying capacitor is connected with the output end of the power supply element;
a first end of the second rectifying capacitor is connected with the output end of the power supply element, and a second end of the second rectifying capacitor is grounded; and
and the anode of the second diode is grounded, and the cathode of the second diode is connected with the input end of the power supply element.
In one embodiment, the switching circuit is a bidirectional conduction controllable switching circuit.
In one embodiment, the switching circuit includes:
the controlled end of the first switching tube is connected with the output end of the operational amplifier, and the first potential end of the first switching tube is connected with the output end of the power supply element; and
and the controlled end of the second switching tube is connected with the output end of the operational amplifier, the first potential end of the second switching tube is connected with the second potential end of the first switching tube, and the second potential end of the second switching tube is connected with the input end of the power supply element.
In one embodiment, the first switching tube is a field effect transistor or a triode, and the second switching tube is a field effect transistor or a triode.
In one embodiment, the method further comprises the following steps:
and the follow current circuit is connected with the power supply element in parallel.
The energy collecting and conditioning system comprises an energy storage circuit, a comparison circuit and a switch circuit. And the input end of the comparison circuit is connected with the output end of the energy storage circuit. And the controlled end of the switch circuit is connected with the output end of the comparison circuit. And the potential end of the switching circuit is connected with the input end of the energy storage circuit. And the comparison circuit controls the working state of the switch circuit according to the value of the output voltage of the energy storage circuit, so as to control the working state of the energy storage circuit. The energy collecting and conditioning system provided by the application utilizes the voltage of the energy storage circuit as the input voltage of the comparison circuit, does not need to be externally connected with other power supplies, and reduces the complexity of the circuit.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an energy harvesting conditioning system provided in accordance with an embodiment of the present application;
fig. 2 is a schematic structural diagram of an energy harvesting conditioning system according to another embodiment of the present application.
Description of the main element reference numerals
10. A tank circuit; 20. a comparison circuit; 30. a switching circuit; 11. a power supply element; 12. an energy storage element; 21. a first voltage dividing resistor; 22. a second voltage dividing resistor; 23. a feedback resistor; 24. an operational amplifier; 40. a linear regulator; 50. a voltage doubler rectifier circuit; 51. a first diode; 52. a first rectifying capacitor; 53. a second rectifying capacitor; 54. a second diode; 31. a first switch tube; 32 a second switch tube; 60. a freewheel circuit.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and those skilled in the art will recognize that many modifications may be made without departing from the spirit and scope of the present application and that the present application is not limited to the specific implementations disclosed below.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first acquisition module may be referred to as a second acquisition module, and similarly, a second acquisition module may be referred to as a first acquisition module, without departing from the scope of the present application. The first acquisition module and the second acquisition module are both acquisition modules, but are not the same acquisition module.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The present application provides an energy harvesting conditioning system. The energy harvesting conditioning system includes a tank circuit 10, a comparator circuit 20, and a switch circuit 30.
The input of the comparator circuit 20 is connected to the output of the tank circuit 10. The controlled terminal of the switching circuit 30 is connected to the output terminal of the comparison circuit 20. The potential terminal of the switching circuit 30 is connected to the input terminal of the tank circuit 10. The comparison circuit 20 controls the operating state of the switch circuit 30 according to the value of the output voltage of the energy storage circuit 10, and further controls the operating state of the energy storage circuit 10.
When the comparison circuit 20 controls the switch circuit 30 to be turned off, the energy storage circuit 10 is turned on, and the energy storage circuit 10 starts to perform energy storage operation and discharge operation simultaneously. When the comparison circuit 20 controls the switch circuit 30 to be turned on, the energy storage circuit 10 is turned off, and the energy storage circuit 10 can only perform a discharging operation.
It is to be understood that the structure of the tank circuit 10 is not particularly limited as long as energy storage is possible. In an alternative embodiment, the tank circuit 10 is a capacitive tank circuit. The tank circuit 10 is used to supply electrical energy to an electrical load.
Referring to fig. 1, in an alternative embodiment, the energy storage circuit 10 includes a power supply element 11 and an energy storage element 12. The power supply element 11 is connected in parallel with the switching circuit 30. A first end of the energy storage element 12 is connected to an input end of the power supply element 11. The second end of the energy storage element 12 is grounded. The first terminal of the energy storage element 12 is an output terminal of the energy storage circuit 10.
It is to be understood that the structure of the power supply element 11 is not particularly limited. In an alternative embodiment, the power supply element 11 may be a single power supply coil. In other embodiments, the power supply element 11 may also be formed by a power supply coil and a current stabilizing element.
It is to be understood that the structure of the energy storage element 12 is not particularly limited. In an alternative embodiment, the energy storage element 12 may comprise only a single energy storage capacitor. In other embodiments, the energy storage element 12 may comprise a plurality of energy storage capacitors connected in series.
The power supply element 11 is connected in parallel with the switching circuit 30. When the comparison circuit 20 controls the switch circuit 30 to be turned off, the energy storage circuit 10 is turned on, and the power supply element 11 supplies power to the energy storage element 12 to store electric energy in the energy storage element 12. When the comparator circuit 20 controls the switch circuit 30 to be turned on, the energy storage circuit 10 is turned off, and the energy storage element 12 is short-circuited. At this time, the tank circuit 10 can perform only the discharging operation.
It is understood that the operational amplifier supply voltage of the comparison circuit 20 is provided by the tank circuit 10. Namely, the output voltage of the tank circuit 10 is the operational amplifier supply voltage of the comparison circuit 20. The output voltage of the tank circuit 10 is variable, and therefore, it is necessary that the upper/lower threshold voltages of the comparison circuit 20 be adjustable.
In one alternative embodiment, the comparison circuit 20 includes a first voltage-dividing resistor 21, a second voltage-dividing resistor 22, a feedback resistor 23, and an operational amplifier 24. The input terminal of the first voltage dividing resistor 21 is connected to the first terminal of the energy storage element 12. The input terminal of the first voltage-dividing resistor 21 is a first input terminal of the comparison circuit 20. The input terminal of the second voltage-dividing resistor 22 is connected to the output terminal of the first voltage-dividing resistor 21. The output of the second divider resistor 22 is connected to ground. The input terminal of the feedback resistor 23 is connected to the output terminal of the first voltage dividing resistor 21. A first input terminal of the operational amplifier 24 is connected to the output terminal of the first voltage-dividing resistor 21, and an output terminal of the operational amplifier 24 is connected to the output terminal of the feedback resistor 23. The output terminal of the operational amplifier 24 is the output terminal of the comparison circuit 20. The output terminal of the comparison circuit 20 is connected to the controlled terminal of the switch circuit 30, and is used for controlling the operating state of the switch circuit 30. A second input of the operational amplifier 24 is connected to a first end of the energy storage element 12. A second input terminal of the operational amplifier 24 is a second input terminal of the comparison circuit 20. A second input of the operational amplifier 24 is used to provide a reference voltage. The reference voltage is also provided by the tank circuit 10.
It can be understood that, the comparison circuit 20 adjusts the upper/lower limit threshold voltage of the comparison circuit 20 through the first voltage-dividing resistor 21, the second voltage-dividing resistor 22 and the feedback resistor 23, and thus, reverses the level.
In one embodiment, the present application provides a parameter calculation method. The parameter calculation method mainly requires the resistance values of the first voltage-dividing resistor 21, the second voltage-dividing resistor 22 and the feedback resistor 23. Now, assume that the resistance value of the first divider resistor 21 is known as RiThe reference voltage is known as VrefAnd the upper threshold voltage is known as UHLower threshold voltage, ULSolving for the resistance R of the second divider resistor 22gAnd the resistance value R of the feedback resistor 23g。
When the comparator circuit 20 is flipped forward, the voltages at the first input terminal and the second input terminal of the operational amplifier 24 are equal, and the following formula is given:
when the comparator circuit 20 is inverted, the voltages at the first input terminal and the second input terminal of the operational amplifier 24 are also equal, which has the following formula:
now, R is solved according to the formulas (1) and (2)gAnd RfThe process is as follows:
order:
when formula (3) is substituted for formula (1), formula (1) is transformed into:
the following equation (4) can be obtained:
by substituting formula (1) for formula (2), it is possible to obtain:
order to
Substituting formula (7) into formula (6) may result in:
reissue to order
Substituting formula (9) into formula (8) yields:
this is obtained by the formula (10):
and then ordering:
then the following results are obtained:
Rg＝d·Rf (13)
by substituting equation (13) into equation (3), the following can be obtained:
solving equation (14) yields:
then, the formula (15) is substituted back to the formula (13) to obtain Rg. All parameters of the in-phase hysteresis comparator are solved.
In the above parameter calculation method, the upper threshold voltage and the lower threshold voltage are known quantities. In one embodiment, the upper threshold voltage is 4.788V. The lower threshold voltage is 3.444V. It can be understood that when the resistance value of the first voltage-dividing resistor 21, the resistance value of the second voltage-dividing resistor 22 or the resistance value of the feedback resistor 23 is changed, the upper/lower threshold voltage of the comparison circuit 20 can be adjusted, and thus the level can be inverted.
It is understood that when the energy storage element 12 starts to store energy from 0, the comparison circuit 20 outputs a low level. The low level controls the switch circuit 30 to be turned off, the energy storage circuit 10 is turned on, the power supply element 11 will continuously supply power to the energy storage element 12 to store electric energy in the energy storage element 12, and the voltage of the energy storage element 12 increases. When the voltage of the energy storage element 12 element rises to the upper threshold voltage, the comparison circuit 20 outputs a high level. The high level controls the switch circuit 30 to be turned on, the energy storage circuit 10 to be turned off, and the energy storage element 12 to be short-circuited. At this time, the energy storage circuit 10 can only perform a discharging operation, the voltage of the energy storage circuit 10 decreases, and when the voltage of the element of the energy storage element 12 decreases to the lower threshold voltage, the comparison circuit 20 outputs a low level, so that the energy storage circuit 10 enters a next cycle charging mode. The energy collection and conditioning system enables the energy storage circuit 10 to work in a stable state through the cooperation of the energy storage circuit 10, the comparison circuit 20 and the switch circuit 30.
It is to be understood that the structure of the switch circuit 30 is not particularly limited as long as it can be controlled by the comparison circuit 20. In one embodiment, the switch circuit 30 is a bidirectional conduction controllable switch circuit 30. In an alternative embodiment, the switching circuit 30 is a triac triggering circuit.
In another alternative embodiment, the switching circuit 30 includes a first switching tube 31 and a second switching tube 32. The controlled end of the first switch tube 31 is connected with the output end of the operational amplifier 24. A first potential terminal of the first switching tube 31 is connected to an output terminal of the power supply element 11. The controlled terminal of the second switch tube 32 is connected to the output terminal of the operational amplifier 24. The first potential end of the second switch tube 32 is connected with the second potential end of the first switch tube 31. The second potential terminal of the second switch tube 32 is connected to the input terminal of the power supply element 11. The first switch tube 31 and the second switch tube 32 are turned off or turned on at the same time. In one embodiment, the first switch tube 31 is a fet or a transistor, and the second switch tube 32 is a fet or a transistor.
The energy collection and conditioning system comprises a tank circuit 10, a comparison circuit 20 and a switch circuit 30. The input of the comparator circuit 20 is connected to the output of the tank circuit 10. The controlled terminal of the switching circuit 30 is connected to the output terminal of the comparison circuit 20. The potential terminal of the switching circuit 30 is connected to the input terminal of the tank circuit 10. The comparison circuit 20 controls the operating state of the switch circuit 30 according to the value of the output voltage of the energy storage circuit 10, and further controls the operating state of the energy storage circuit 10. The energy collecting and conditioning system provided by the application utilizes the voltage of the energy storage circuit 10 as the input voltage of the comparison circuit 20, does not need to be externally connected with other power supplies, and reduces the complexity of the circuit.
Referring to fig. 2, in one embodiment, the energy harvesting conditioning system further comprises a linear regulator 40.
The input end of the linear regulator 40 is connected to the first end of the energy storage element 12, and the output end of the linear regulator 40 is connected to the second input end of the operational amplifier 24. The linear regulator uses a transistor or FET operating in its linear region to subtract excess voltage from the output voltage of the energy storage element 12, producing a regulated output voltage which is sent to a second input of the operational amplifier 24 as a reference voltage. By droop voltage is meant the minimum value of the difference between the input voltage and the output voltage required by the regulator to maintain the output voltage within 100mV above or below its nominal value. A positive output voltage LDO (low dropout) regulator typically uses a power transistor (also called pass device) as a PNP such transistor to allow saturation, so the linear regulator 40 can have a very low dropout voltage, typically around 200 mV.
In one embodiment, the energy harvesting conditioning system further comprises a voltage doubler rectifier circuit 50.
The input end of the voltage-doubling rectifying circuit 50 is connected with the input end of the power supply element 11. The output end of the voltage doubling rectifying circuit 50 is grounded. It is to be understood that the structure of the voltage-doubler rectifier circuit 50 is not particularly limited as long as the ac power of the power supply element 11 can be converted into dc power. In an alternative embodiment, the voltage-doubler rectification circuit 50 includes a first diode 51, a first rectification capacitor 52, a second rectification capacitor 53, and a second diode 54.
The anode of the first diode 51 is connected to the input of the power supply element 11. The cathode of the first diode 51 is connected to a first terminal of the energy storage element 12. A first terminal of the first rectifying capacitor 52 is connected to the cathode of the first diode 51. A second terminal of the first rectifying capacitor 52 is connected to the output terminal of the power supply element 11. A first end of the second rectifying capacitor 53 is connected to the output end of the power supply element 11, and a second end of the second rectifying capacitor 53 is grounded. The anode of the second diode 54 is grounded. The cathode of the second diode 54 is connected to the input of the power supply element 11.
In one embodiment, the energy harvesting conditioning system further comprises a freewheeling circuit 60. The freewheel circuit 60 is connected in parallel with the power supply element 11. The structure of the free-wheeling circuit 60 is not particularly limited as long as abrupt voltage and current changes can be prevented. In an alternative embodiment, the freewheel circuit 60 is a freewheel diode. When the switch circuit 30 is closed, the freewheel circuit 60 provides a release reverse current path for the power supply element 11.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An energy harvesting conditioning system, comprising:
a tank circuit;
the input end of the comparison circuit is connected with the output end of the energy storage circuit, and the output voltage of the energy storage circuit is the operational amplifier power supply voltage of the comparison circuit;
the comparison circuit includes:
the input end of the first divider resistor is connected with the first end of the energy storage element, and the input end of the first divider resistor is the first input end of the comparison circuit;
the input end of the second voltage-dividing resistor is connected with the output end of the first voltage-dividing resistor, and the output end of the second voltage-dividing resistor is grounded; and
the input end of the feedback resistor is connected with the output end of the first divider resistor; and
a first input end of the operational amplifier is connected with an output end of the first voltage-dividing resistor, an output end of the operational amplifier is connected with an output end of the feedback resistor, and an output end of the operational amplifier is an output end of the comparison circuit;
the controlled end of the switching circuit is connected with the output end of the comparison circuit, and the potential end of the switching circuit is connected with the input end of the energy storage circuit;
the tank circuit includes:
a power supply element connected in parallel with the switching circuit; and
the first end of the energy storage element is connected with the input end of the power supply element, the second end of the energy storage element is grounded, and the first end of the energy storage element is the output end of the energy storage circuit;
the input end of the linear voltage stabilizer is connected with the first end of the energy storage element, and the output end of the linear voltage stabilizer is connected with the second input end of the operational amplifier;
the comparison circuit controls the working state of the switch circuit according to the value of the output voltage of the energy storage circuit, and further controls the working state of the energy storage circuit;
when the comparison circuit controls the switch circuit to be switched off, the energy storage circuit is switched on, the energy storage circuit performs energy storage work and discharge work at the same time, and when the comparison circuit controls the switch circuit to be switched on, the energy storage circuit is switched off, and the energy storage circuit only performs discharge work.
2. The energy harvesting conditioning system of claim 1, further comprising:
and the input end of the voltage-multiplying rectifying circuit is connected with the input end of the power supply element, and the output end of the voltage-multiplying rectifying circuit is grounded.
3. The energy harvesting conditioning system of claim 2, wherein the voltage doubler rectifier circuit comprises:
the anode of the first diode is connected with the input end of the power supply element, and the cathode of the first diode is connected with the first end of the energy storage element;
a first end of the first rectifying capacitor is connected with the cathode of the first diode, and a second end of the first rectifying capacitor is connected with the output end of the power supply element;
a first end of the second rectifying capacitor is connected with the output end of the power supply element, and a second end of the second rectifying capacitor is grounded; and
and the anode of the second diode is grounded, and the cathode of the second diode is connected with the input end of the power supply element.
4. The energy harvesting conditioning system of claim 1, wherein the switching circuit is a bidirectional conduction controllable switching circuit.
5. The energy harvesting conditioning system of claim 4, wherein the switching circuit comprises:
the controlled end of the first switching tube is connected with the output end of the operational amplifier, and the first potential end of the first switching tube is connected with the output end of the power supply element; and
and the controlled end of the second switching tube is connected with the output end of the operational amplifier, the first potential end of the second switching tube is connected with the second potential end of the first switching tube, and the second potential end of the second switching tube is connected with the input end of the power supply element.
6. The energy harvesting conditioning system of claim 5, wherein the first switching transistor is a field effect transistor or a triode and the second switching transistor is a field effect transistor or a triode.
7. The energy harvesting conditioning system of claim 6, further comprising:
and the follow current circuit is connected with the power supply element in parallel.
8. The energy harvesting conditioning system of claim 1, wherein the switching circuit is a triac triggering circuit.
9. The energy harvesting conditioning system of claim 1, wherein the power supply element is a power supply coil.
10. The energy harvesting conditioning system of claim 1, wherein the energy storage element is an energy storage capacitor.
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| CN202010668907.0A CN111831042B (en) | 2020-07-13 | 2020-07-13 | Energy collecting and conditioning system |
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