WO2017037793A1 - Dispositif d'alimentation électrique - Google Patents

Dispositif d'alimentation électrique Download PDF

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Publication number
WO2017037793A1
WO2017037793A1 PCT/JP2015/074496 JP2015074496W WO2017037793A1 WO 2017037793 A1 WO2017037793 A1 WO 2017037793A1 JP 2015074496 W JP2015074496 W JP 2015074496W WO 2017037793 A1 WO2017037793 A1 WO 2017037793A1
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WIPO (PCT)
Prior art keywords
power generation
vibration
frequency
power
power supply
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PCT/JP2015/074496
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English (en)
Japanese (ja)
Inventor
直毅 吉武
達章 正木
進 神山
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オムロン株式会社
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Priority to PCT/JP2015/074496 priority Critical patent/WO2017037793A1/fr
Publication of WO2017037793A1 publication Critical patent/WO2017037793A1/fr

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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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier

Definitions

  • the present invention relates to a power supply device using a vibration power generation element that generates power by external vibration.
  • a technique for determining the abnormal state based on the vibration state of the monitoring target device obtained using the vibration power generation element is also disclosed (see, for example, Patent Document 1).
  • predetermined wireless transmission is performed to the information processing device side using the power generated by the vibration power generation element, and the abnormal state of the monitored device is determined based on the reception interval by the information processing device. Is called.
  • a vibration power generation element that converts vibration energy into electric power can generate power based on vibrations of motors and the like that are often used in factories and the like.
  • the amount of power generated by such a vibration power generation element generally depends on the amplitude and frequency of external vibration, and it is not always possible to generate a sufficient amount as compared with the power consumption at the load. .
  • using a wireless device to determine an abnormality of a monitored device can eliminate wiring in the system construction for the abnormality determination, and is extremely useful in terms of maintenance and cost. is there.
  • wireless transmission for abnormality determination using the generated power of the vibration power generation element on the monitoring target device side having the vibration power generation element, it is not caused by the abnormality of the monitoring target device. If sufficient vibration power generation due to external vibration cannot be performed, abnormality monitoring and wireless transmission that should be originally performed are not performed, and an erroneous abnormality determination may be made regarding the monitoring target device.
  • the present invention has been made in view of the above problems, and in a power supply device using a vibration power generation element that generates power by external vibration, the efficiency of vibration power generation by external vibration is improved and the amount of power to a power supply target The purpose is to increase as much as possible.
  • the present invention is a power supply device that outputs the generated power from the power generation unit to a power supply target via the control unit, and the power generation unit is at least an external device from the outside of the power supply device.
  • a plurality of DC power generation units comprising a combination of a vibration power generation element that performs vibration power generation by vibration and a rectifier circuit that rectifies the output of the vibration power generation element; and the plurality of DC power generation units are connected to the control unit.
  • Unit output power connected in parallel and passing through the rectifier circuit in each DC power generation unit is input to the control unit in parallel.
  • the power supply apparatus includes a plurality of DC power generation units each formed by a combination of a vibration power generation element that performs vibration power generation by external vibration and a rectifier circuit that rectifies the output thereof.
  • the power generation capability of each vibration power generation element in the plurality of sets of DC power generation units for example, the ratio of the generated power to the vibration energy of the external vibration to be applied may all be the same. Alternatively, some vibration power generation The power generation capacity of the element may be different from the power generation capacity of other vibration power generation elements.
  • the unit output power which is the DC output of the DC power generation unit including the vibration power generation element, is parallel to the control unit that controls the supply of the generated power by the power supply device to the power supply target. The input configuration is adopted.
  • the control unit superimposes the unit output power from each DC power generation unit to generate the generated power, and can increase the power generation capability as a power supply device. Further, since the plurality of unit output powers to be superimposed are DC power, the generated power can be increased without canceling the waveforms as in the case of AC power. Moreover, as a power supply device, each DC power generation unit is controlled by a common control unit. That is, since the power consumed by the control unit for the output of generated power is shared by each DC power generation unit, the ratio of power loss due to the power consumption of the control unit in one DC power generation unit is reduced, and as a result As a power supply device, it is possible to realize power supply with high power generation efficiency.
  • the number of DC power generation units included in the power supply device according to the present invention is not particularly limited.
  • the number of DC power generation units is determined to such an extent that the power required for the power supply target can be covered.
  • the configuration of the vibration power generation element is not limited to a specific configuration.
  • each of the vibration power generation elements included in the plurality of DC power generation units has a peak value of the generated power of the vibration power generation element when the frequency of the external vibration is a predetermined frequency. It may be formed as follows. In other words, each vibration power generation element is configured to have a resonance frequency with respect to the external vibration. Therefore, when the external vibration is a vibration having a lot of resonance frequency components, the resonance The vibration power generation element corresponding to the frequency can realize more efficient vibration power generation.
  • the plurality of DC power generation units may include at least two types of vibration power generation elements having different predetermined frequencies.
  • the predetermined frequencies of the vibration power generation elements included in the plurality of DC power generation units are not necessarily different from each other.
  • the predetermined frequency of the first vibration power generation element group including one or a plurality of vibration power generation elements may be different from the predetermined frequency of the second vibration power generation element group including other vibration power generation elements.
  • another vibration power generation element group corresponding to a different predetermined frequency may be formed.
  • the first frequency is the vibration power generation corresponding to the second frequency with respect to the second frequency.
  • the transition of the amount of power generation with respect to the vibration frequency by the first power generation element that is a deviation from the half-value width of the transition of the power generation amount with respect to the vibration frequency by the second power generation element that is the element and that corresponds to the first frequency
  • the first frequency and the second frequency may be set so that the transition related to the second power generation element overlaps with each other.
  • the vibration frequency of the external vibration is changed in the transition of the power generation amount with respect to the vibration frequency of the external vibration in the power supply device. Even if it changes, the area
  • the first frequency and the second frequency are set with a deviation equal to or greater than the half width, and the output generated by the first power generation element is rectified by the corresponding rectifier circuit, and the power generation by the second power generation element.
  • the transition of the power supply device is formed by superimposing the output rectified by the corresponding rectifier circuit.
  • the first frequency and the second frequency are set such that the first frequency is deviated from the second frequency by the half-value width of the transition with respect to the second power generation element.
  • the first frequency and the second frequency are set as another method.
  • Each of the frequencies may be a multiple of 50 Hz and 60 Hz.
  • the power supply device according to the present invention realizes power supply to a power supply target using external vibration caused by either 50 Hz or 60 Hz, which is the frequency of the commercial power supply. Can do.
  • each of the plurality of DC power generation units has a backflow prohibition circuit that prohibits a backflow in which a current flows into the rectification circuit side between the rectification circuit and the control unit. May be.
  • a plurality of DC power generation units are connected in parallel to the control unit. And even if the vibration power generation element included in each DC power generation unit is performing vibration power generation by external vibration, not all vibration power generation elements necessarily output the same power generation amount. A potential difference is generated on the output terminal of the DC power generation unit. Therefore, if a backflow to the rectifier circuit side occurs due to the potential difference, as a result, the generated power as the power supply device decreases. Therefore, by providing the backflow prohibition circuit for prohibiting the backflow as described above between the rectifier circuit of each DC power generation unit and the control unit, it is possible to suppress a decrease in the generated power of the power supply device.
  • the control unit may include a secondary battery that stores the generated power from the plurality of DC power generation units.
  • the control unit can appropriately control the supply timing of the generated power to the power supply target by storing the generated power from each DC power generation unit in the secondary battery.
  • the plurality of DC power generation units may be disposed on the flexible substrate.
  • some DC power generation units among the plurality of DC power generation units are arranged on one surface of one flexible substrate, and the remaining DC power generation units among the plurality of DC power generation units
  • the DC power generation unit may be disposed on the other surface of the flexible substrate. In this way, by arranging the DC power generation units on the respective surfaces with the flexible substrate interposed therebetween, a part of the DC power generation units and the remaining DC power generation units can be arranged at different positions. As a result, it is possible to form an environment in which external vibration is appropriately applied to each of some of the DC power generation units and the remaining DC power generation units, thereby realizing more efficient vibration power generation. .
  • FIG. 1 shows a configuration of an electret group 1a and an electrode group 5a provided on each of a movable member 1 and a fixed member 5 in a vibration power generation element 10 that performs vibration power generation by external vibration.
  • the electret and the electrode are arranged in a direction in which the relative movement direction of the movable member 1 with respect to the fixed member 5 is the X direction, and the directions in which the movable member 1 and the fixed member are opposed are the Z direction, the X direction, and The direction orthogonal to the Z direction is defined as the Y direction.
  • FIG. 1 is a cross-sectional view of the vibration power generation element 10 taken along the ZX plane.
  • the movable member 1 and the fixed member 5 are housed in a housing 11 shown in FIG.
  • the movable member 1 and the fixed member 5 are configured to be relatively movable while maintaining a state of facing each other, and a support structure of the movable member 1 that enables the relative movement will be described later.
  • the fixing member 5 is fixed to the housing 11.
  • both ends of the movable member 1 are respectively connected to the housing 11 by springs 14 (see FIG. 2 and the like), the movable member 1 itself is a fixed member fixed to the casing 11 by external vibration. 5 is configured to reciprocate (vibrate) relative to the other.
  • the movable member 1 and the fixed member 5 are configured to be relatively movable while being opposed to each other and maintaining a parallel state to each other, that is, maintaining a constant interval between the opposing surfaces. ing. Thereby, it becomes possible to generate an electrical signal for the pair of electrodes 6 and 7 on the fixed member 5 side by the action of the electret 2 on the movable member 1 side. Since this electric signal generation principle is a conventional technique, a detailed description thereof is omitted in this specification.
  • an electret group 1a is formed on a movable substrate 1b.
  • the electret group 1a includes a plurality of electrets 2 provided on the surface of the movable member 1 facing the fixed member 5 and formed on a conductor, respectively, and a plurality of guard electrodes 4 that are not grounded.
  • the electrets 2 and the guard electrodes 4 are arranged alternately along the relative movement direction (X direction) of the movable member 1 with respect to the fixed member 5.
  • the plurality of electrets 2 and the plurality of guard electrodes 4 are each formed in a comb shape, and the respective electrets 2 and the respective guard electrodes 4 are arranged in a nested manner.
  • FIG. 1 is a ZX sectional view. Therefore, the electret 2 and the guard electrode 4 are illustrated as being alternately arranged.
  • the electret 2 is configured to hold a negative charge semipermanently.
  • the guard electrode 4 employs a configuration in which the guard electrode 4 is not grounded as described above, but may be configured to be grounded instead.
  • an electrode group 5a is formed on a fixed substrate 5b.
  • the electrode group 5a is provided on the surface of the fixed member 5 facing the movable member 1, and includes a plurality of small electrode groups each including a pair of electrodes (first electrode 6 and second electrode 7).
  • the relative position fluctuation (vibration) between the electrodes 6 and 7 due to the relative position fluctuation of the movable member 1 having the electret 2 with respect to the fixed member 5 due to external vibration. ) Is generated and power is generated.
  • the generated power is rectified by the rectifier circuit 20.
  • FIG. 2 is a top view (top view in the XY plane) of the vibration power generation element 10, and FIG. 3 is a cross-sectional view along AA in FIG. 2 (cross-sectional view in the ZY plane).
  • FIG. 2 shows a state in which the upper surface 11c of the housing 11 is removed and the inside is visualized from above.
  • the fixed member 5 including the electrode group 5 a and the fixed substrate 5 b and the movable member 1 including the electret group 1 a and the movable substrate 1 b are accommodated in the casing 11 of the vibration power generation element 10. .
  • the casing 11 has a substantially rectangular parallelepiped shape, and includes a top surface 11c and a bottom surface 11b, a pair of side surfaces 11a extending in the X direction that is the relative movement direction of the movable member 1, and a side surface orthogonal to the relative movement direction. And has a pair of side surfaces 11d extending in the Y direction.
  • the fixing member 5 is being fixed to the bottom face 11b of the housing
  • the movable member 1 is supported so as to be able to move relative to the fixed member 5 via a plurality of supporting steel balls 12.
  • the movable member 1 is further arranged on the plurality of supporting steel balls 12 arranged on the inner wall surface of the bottom surface 11b.
  • the distance between the electret group 1a on the movable member 1 side and the electrode group 5a of the fixed member 5 is a predetermined value suitable for vibration power generation. Stipulated in distance.
  • a further supporting steel ball 13 is disposed between the movable member 1 and the inner wall surface of the side surface 11a.
  • End side projections 1d are provided at both ends of the side surface of the movable substrate 1b facing the inner wall surface of the side surface 11a, and a central projection 1c is provided at the center of the side surface of the movable substrate 1b.
  • a support groove 1e in which the support steel ball 13 can be disposed is formed. Therefore, as shown in FIG. 2, two support grooves 1 e are formed on each of the left and right sides of the movable member 1, and the support steel balls 13 are disposed in each.
  • a spring 14 is disposed between the movable member 1 and each of the two side surfaces 11d of the housing 11 via a connection portion 15 provided substantially at the center in the XY plane of the movable member 1.
  • the spring 14 is connected to a substantially central portion of the side surface 11 d, and the elastic force by each spring 14 is arranged to act in the relative movement direction (X direction). Due to the elastic force of the spring 14, the movable member 1 that has received external vibration reciprocates within the housing 11, thereby realizing efficient vibration power generation.
  • the movable member 1 is independently supported by the support steel ball 12 for the bottom surface 11b and by the support steel ball 13 for the side surface 11a.
  • a resonance phenomenon occurs in which the amplitude of the movable member 1 with respect to the fixed member 5 becomes maximum when the frequency of the external vibration is a predetermined frequency due to its physical characteristics.
  • the amplitude of the movable member 1 is maximized, the number of electrodes that the electret on the movable member 1 side crosses per unit time increases, and thus the power generation amount of the vibration power generation element 10 increases.
  • the resonance frequency of the movable member 1 in the vibration power generation element 10 approaches or coincides with the frequency of external vibration as much as possible. It is preferable to do this.
  • the resonance frequency of the vibration power generation element 10 can be set to a desired frequency by adjusting the weight of the movable member 1 and the spring constant of the spring 14.
  • FIG.4 shows a schematic configuration of the power supply device 60 and the sensor module 70
  • FIG. 5 shows a circuit configuration corresponding to the power supply device 60 shown in FIG.
  • the sensor module 70 includes a power supply device 60 and a load 50 that operates by receiving power supply from the power supply device. This load 50 corresponds to a power supply target in the present invention.
  • the power supply device 60 includes a plurality of sets (four sets in this embodiment) of the DC power generation unit 30 including the vibration power generation element 10, the rectification / smoothing circuit 20, and the backflow prohibition circuit 21.
  • the reference number thereof is 30.
  • subscripts (a to d) corresponding to the respective DC power generation units are used. Reference is made to FIG. The same applies to the reference numerals of the vibration power generation element 10, the rectification / smoothing circuit 20, and the backflow prohibition circuit 21 included in the DC power generation unit 30.
  • the generated power of the vibration power generation element 10 due to external vibration is AC power from the configuration of the vibration power generation element 10 shown in FIG. Therefore, in order to convert the generated power into DC power, the generated power is passed through the rectifying / smoothing circuit 20.
  • the rectification / smoothing circuit 20a of the DC power generation unit 30a is formed by a full bridge circuit including four diodes D1 to D4 and a capacitor C1, and the rectification / smoothing circuit of the DC power generation unit 30b.
  • the rectifying / smoothing circuit 20d of the power generation unit 30d is formed by a full bridge circuit including four diodes D13 to D16 and a capacitor C4.
  • the generated power that has passed through the rectification / smoothing circuit 20 becomes the output of the DC power generation unit 30 through the backflow prohibition circuit 21.
  • the backflow prohibiting circuit 21a of the DC power generation unit 30a is formed by a diode DA1
  • the backflow prohibiting circuit 21b of the DC power generation unit 30b is formed by a diode DA2
  • the backflow of the DC power generation unit 30c is formed of a diode DA3
  • the reverse current prohibition circuit 21d of the DC power generation unit 30d is formed of a diode DA4.
  • these four sets of DC power generation units 30 are connected to the control unit 40 in parallel. That is, when external vibration is applied to the sensor module 70 including the power supply device 60, vibration power generation is performed by the vibration power generation element 10 in each DC power generation unit 30, and the generated power is rectified and smoothed by the rectifying / smoothing circuit 20, backflow.
  • the electric power of each DC power generation unit 30 and the control unit 40 so that the power (corresponding to the unit output power in the present invention) that is output from the DC power generation unit 30 through the prohibition circuit 21 is input to the control unit 40 in an overlapping manner. A proper connection relationship is set.
  • the control unit 40 is a functional unit for controlling the power supply of the power supply device 60, that is, the supply of the generated power by each vibration power generation element 10 to the load 50, specifically, a predetermined power control circuit 41. Or a microcomputer (not shown).
  • the control unit 40 includes a secondary battery 42, and stores the unit output power from each DC power generation unit 30 in the secondary battery 42, or loads the power stored in the secondary battery 42 with a load 50. The control relating to the storage / discharge to be performed is performed.
  • the load 50 is driven by the power supplied from the power supply device 60 as described above, and specifically includes the wireless communication device 51 and the acceleration sensor 52.
  • the acceleration sensor 52 is a sensor that detects the acceleration generated in the measurement object on which the sensor module 70 is disposed, and the detection data is transmitted to the reception device outside the sensor module by the wireless communication device 51.
  • the power supply device 60 performs vibration power generation by external vibration, so that the acceleration of the measurement object on which the sensor module 70 is disposed can be obtained without receiving power supply from the outside of the sensor module. Data transmission for detection and collection of the detection data is realized.
  • the acceleration sensor 52 is exemplified as the sensor included in the sensor module 70.
  • the present invention is not limited to the acceleration sensor, and other sensors, for example, according to the purpose of data collection, for example, A pressure sensor or a temperature sensor may be mounted on the sensor module 70 together with the acceleration sensor 52 or instead of the acceleration sensor 52.
  • FIG. 6 shows the transition of the power generation amount by the power supply device 60 with respect to the vibration frequency of the external vibration (hereinafter referred to as “power generation transition”).
  • the power generation amount transition shown in FIG. 6 is for the case where the acceleration of the external vibration is 0.15G.
  • the power generation amount transition of the power supply device 60 is indicated by the line L1
  • the power generation amount transition of the power supply device having only one set of the DC power generation unit 30 is indicated by the line L2.
  • the spring constant of the spring 14 of the vibration power generation element 10 is adjusted so that all the resonance frequencies of the vibration power generation element 10 in the DC power generation unit 30 are the same (for example, 29.5 Hz). Yes.
  • the resonance frequency of the vibration power generation element of the power generation amount transition indicated by the line L2 is also 29.5 Hz.
  • the four DC power generation units 30 are connected in parallel to the control unit 40, so that the external vibration frequency is in the vicinity of the resonance frequency of 29.5 Hz. (For example, 29.5 Hz to 30.1 Hz), the generated power of each vibration power generation element 10 is superimposed, and the power generation amount as the power supply device 60 is 4 as compared with the case where the DC power generation unit is one set. The output is increased to about twice. As a result, the power supply device 60 can supply a sufficient amount of power to the power consumed by the wireless communication device 51 and the acceleration sensor 52 at the load 50.
  • the power generation by the power supply device 60 is also performed.
  • the amount is larger than that in the case of one set of DC power generation units, but the ratio is more than four times that in the case of a set of DC power generation units. This is because, in the power supply device 60, one set of control units 40 controls the four sets of DC power generation units 30, and the load of the control unit 40 is distributed among the units.
  • the proportion of the power consumed by the control unit 40 in the unit output power of the DC power generation unit is Because it grows.
  • the power generated by the vibration power generation element 10 is lower than that in the vicinity of the external vibration frequency. Therefore, in the case indicated by the line L2, the consumption of the control unit 40 The effect of electric power is increased, and the result shown in FIG. 6 is obtained.
  • the power supply device 60 employs a configuration in which four sets of DC power generation units 30 are connected in parallel to the control unit 40, thereby increasing the power generation amount of the power supply device 60 and reducing the external vibration frequency. Even when the resonant frequency of the vibration power generation element 10 is slightly deviated, an efficient direct current output is realized. Accordingly, from the viewpoint of driving the load 50, it is possible to expand the frequency region of external vibration that can be handled from the vicinity region to the peripheral region, and to increase the power generation amount itself.
  • the secondary battery 42 is provided in the control unit 40, but the secondary battery is not necessarily required.
  • the unit output power of each DC power generation unit 30 is supplied to the load 50 as it is.
  • the backflow prohibition circuit 21 is provided in each DC power generation unit 30, installation of the backflow prohibition circuit 21 may be avoided because the influence of the backflow on the amount of power generation can be ignored.
  • each vibration power generation is performed so that the resonance frequencies of the vibration power generation elements 10a to 10d included in the four sets of DC power generation units 30 are 27.5 Hz, 28.5 Hz, 29.5 Hz, and 30.5 Hz, respectively.
  • the spring constant of the spring 14 of the element 10 is adjusted.
  • the power generation amount transition of the power supply device 60 in this case is indicated by a line L3 in FIG.
  • the power generation amount transition (that is, the power generation amount transition indicated by the line L2 in FIG. 6) of the power supply apparatus having only one set of the DC power generation unit 30 is indicated by the line L4 as a reference.
  • the power generation amount transition shown in FIG. 7 is for the case where the acceleration of external vibration is 0.15G.
  • the resonance frequency of the vibration power generation elements 10a to 10d is set with reference to the vibration power generation element 10c having a resonance frequency of 29.5 Hz. Specifically, based on the fact that the half-value width of the power generation amount of the vibration power generation element 10c alone having a resonance frequency of 29.5 Hz (that is, the transition indicated by the line L4) is about 1 Hz, from the reference of 29.5 Hz The resonance frequency of the vibration power generation elements 10a, 10b, and 10d is set to 27.5 Hz, 28.5 Hz, and 30.5 Hz as described above by shifting by 1 Hz.
  • the unit output power of the four DC power generation units 30 is suitably overlapped in the frequency domain, and thus the power generation amount in the power generation amount transition of the power supply device 60 is relatively high. It becomes possible to acquire as large a frequency range as possible.
  • the frequency region where the power generation amount exceeds 100 ⁇ W can be determined as approximately 27.5 Hz to 31.0 Hz.
  • the power generation amount transition indicated by the line L1 in FIG. 6 that is, the transition when the resonance frequencies of the vibration power generation elements 10a to 10d are all 29.5 Hz
  • the power generation amount transition indicated by the line L3 in FIG. That is, transitions when the resonant frequencies of the vibration power generation elements 10a to 10d are 27.5 Hz, 28.5 Hz, 29.5 Hz, and 30.5 Hz, respectively, are indicated by lines L5 and L6 in FIG.
  • the acceleration of the external vibration is 0.03 G, that is, when the acceleration in FIG.
  • the acceleration of 0.03G external vibration is set as the minimum acceleration at which the power generation device 60 can generate vibration and power.
  • the power generation amount transitions indicated by the lines L5 and L6 in the former case (the case indicated by the line L5), if the external vibration frequency is close to the set resonance frequency, a relatively large power generation amount is obtained. Although it can be obtained, the amount of power generation is reduced when the external vibration frequency is separated from the resonance frequency.
  • the power generation amount in the latter case (the case indicated by line L6), the power generation amount is larger than the power generation amount in the case of one DC power generation unit, although the peak value of the power generation amount is lower than the former in a relatively wide frequency range as described above. The amount can be obtained, and the load 50 can be driven stably. This tendency is the same even when the acceleration of the external vibration is minimum as shown in FIG.
  • whether to adopt the former configuration or the latter configuration for the power supply device 60 may be appropriately selected according to the frequency of external vibration applied to the power supply device 60.
  • a specific frequency component is relatively high, for example, about two vibration power generation elements among four vibration power generation elements
  • frequencies shifted from the specific frequency by the half-value width may be set as the respective resonance frequencies.
  • the resonance frequency of the vibration power generation elements 10a and 10b is set to 29.5 Hz
  • the resonance frequency of the vibration power generation elements 10c and 10d is set to 28.5 Hz and 30.5 Hz. In this way, efficient vibration power generation can be realized.
  • the resonance frequency of the vibration power generation element 10 in each DC power generation unit 30 included in the power supply device 60 is determined in consideration of the half width of the power generation amount transition in the case of one vibration power generation element.
  • the resonance frequency of the vibration power generation element 10 may be determined based on 50 Hz and 60 Hz as the frequencies of the commercial power source.
  • the vibration generated from a motor or the like driven by the power supplied from the commercial power supply, that is, the vibration that can be external vibration applied to the power supply device 60 includes the one affected by the frequency of the commercial power supply. Therefore, by determining the resonance frequency of the vibration power generation element 10 based on 50 Hz and 60 Hz, which are the frequencies of the commercial power supply, efficient vibration power generation can be realized regardless of the frequency of the commercial power supply. Is possible.
  • the resonance frequency of the vibration power generation elements 10a and 10b in each DC power generation unit 30 included in the power supply device 60 is determined based on 60 Hz
  • the resonance frequency of the vibration power generation elements 10c and 10d is determined based on 50 Hz.
  • the former resonance frequency and the latter resonance frequency may be multiples of 60 Hz and 50 Hz, respectively.
  • the former may be 30 Hz and the latter may be 25 Hz.
  • the former and latter combinations may be 15 Hz, 12.5 Hz, 60 Hz, 50 Hz, 120 Hz, and 100 Hz, respectively.
  • FIG. 10 shows a state in which the sensor module 70 is installed in the acceleration detection target object 100 by the acceleration sensor 52.
  • a step is formed as shown in FIG. It is difficult for the vibration power generation element 30 to perform efficient vibration power generation unless external vibration is appropriately applied to the vibration power generation element 30. Therefore, when the sensor module 70 is installed on an object having such a step, each vibration power generation element 30 comes into contact with the object 100 so that external vibrations can be appropriately propagated from the object 100.
  • the sensor module 70 is formed.
  • the DC power generation units 30 including the vibration power generation elements 10 are respectively arranged on the upper surface side and the lower surface side of the so-called flexible substrate 80 whose shape is variable.
  • DC power generation units 30a and 30b corresponding to the upper steps of the object 100 are disposed on the upper surface side of the flexible substrate 80, and DC power generation units corresponding to the lower steps of the object 100 are disposed on the lower surface side of the flexible substrate 80.
  • 30c and 30d are arranged.
  • Each DC power generation unit 30, the control unit 40, and the load 50 are wired on the surface or inside of the flexible substrate 80 to form the electrical configuration shown in FIG.
  • the direct current is adjusted to the respective vibration frequency.
  • the resonance frequency of the vibration power generation elements 10a and 10b in the power generation units 30a and 30b and the resonance frequency of the vibration power generation elements 10c and 10d in the DC power generation units 30c and 30d may be set.

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  • Power Engineering (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

La présente invention concerne un dispositif d'alimentation électrique destiné à délivrer l'énergie générée par une unité de production d'énergie, par l'intermédiaire d'une unité de commande, à un objet auquel l'énergie doit être fournie. L'unité de production d'énergie comprend une pluralité d'unités de production d'énergie en courant continu (CC) composées chacune d'une combinaison d'au moins un élément de production d'énergie vibratoire, pour effectuer une production d'énergie vibratoire sous l'effet d'une vibration externe provenant de l'extérieur du dispositif d'alimentation électrique, et d'un circuit de redressement pour redresser la sortie de l'élément de production d'énergie vibratoire ; la pluralité d'unités de production d'énergie CC sont connectées en parallèle à l'unité de commande ; et dans les unités de production d'énergie CC individuelles, les énergies d'unité de sortie qui sont passées à travers le circuit de redressement sont appliquées en parallèle à l'unité de commande. De cette manière, le rendement de production d'énergie vibratoire sous l'effet d'une vibration externe est amélioré, et la quantité d'énergie fournie à l'objet auquel l'énergie doit être fournie est accrue autant que possible.
PCT/JP2015/074496 2015-08-28 2015-08-28 Dispositif d'alimentation électrique WO2017037793A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11830352B1 (en) 2022-08-10 2023-11-28 International Business Machines Corporation Haptic vibration exposure control based on directional position of power recovery module

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JP2012206630A (ja) * 2011-03-30 2012-10-25 Asahi Glass Co Ltd 移動体
JP2013150387A (ja) * 2012-01-17 2013-08-01 Kansai Univ エレクトレットの製造方法、エレクトレット、発電装置
WO2014069483A1 (fr) * 2012-11-05 2014-05-08 旭硝子株式会社 Dispositif de générateur de vibration et module de source de puissance
JP2014131418A (ja) * 2012-12-28 2014-07-10 Omron Corp 振動発電装置

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JP2012206630A (ja) * 2011-03-30 2012-10-25 Asahi Glass Co Ltd 移動体
JP2013150387A (ja) * 2012-01-17 2013-08-01 Kansai Univ エレクトレットの製造方法、エレクトレット、発電装置
WO2014069483A1 (fr) * 2012-11-05 2014-05-08 旭硝子株式会社 Dispositif de générateur de vibration et module de source de puissance
JP2014131418A (ja) * 2012-12-28 2014-07-10 Omron Corp 振動発電装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11830352B1 (en) 2022-08-10 2023-11-28 International Business Machines Corporation Haptic vibration exposure control based on directional position of power recovery module

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