JP6133050B2 - Stacked power generator - Google Patents

Description

  The present invention relates to a laminated power generator in which power generators are laminated and accommodated in a container.

  Conventionally, vibrations of structures such as roads, bridges, buildings, and industrial machines, vibrations of moving bodies such as automobiles, railway vehicles, and aircraft, as well as vibrations caused by human movements and environmental vibrations that exist universally in the environment Attempts have been made to convert these into electrical energy for effective use.

  As a power generation method for converting such vibration energy or external force into electricity, there is a method using a sheet-like or film-like power generation body having a pair of electrodes that generate power by applying deformation by external force or vibration.

  As such a power generator, for example, piezoelectric rubber having piezoelectricity by dispersing piezoelectric ceramic powder in rubber and applying polarization treatment (electret treatment) (for example, Patent Document 1), There is a piezoelectric material in which a molecular porous body is subjected to electret treatment to impart piezoelectricity (for example, Patent Document 2). Furthermore, there is a vibration power generation apparatus in which such piezoelectric elements are stacked in a plurality of layers (for example, Patent Document 3).

JP 2008-53527 A JP 2010-186960 A JP 2010-154746 A

  However, ceramic piezoelectric elements and polymer piezoelectric films are expensive and are not suitable for disposing large areas. Moreover, in order to arrange | position in a large area, it is necessary to arrange | position many electric power generation bodies, the number of parts increases, and it causes a cost increase and a weight increase.

  In addition, as a method of reducing the power generation device and increasing the power generation output, there is a method of stacking power generation bodies as in Patent Document 3, but in order to deform a plurality of layers of piezoelectric elements, a large external force or vibration is required. There is a problem that it is necessary.

  Therefore, in order to efficiently generate power using environmental vibration, external force, or the like using a conventional piezoelectric element or power generation device, a complicated mechanism for sufficiently deforming the power generation body is required.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a highly reliable laminated power generation device having a high power generation efficiency with a simple structure.

In order to achieve the above-described object, the present invention provides a vibration power generator having an electret dielectric holding electric charge and a pair of electrodes arranged so as to sandwich the electret dielectric, and a plurality of layers of the vibration power generator. A support member disposed in between, and a container for housing the plurality of layers of the vibration power generator, wherein both the electret dielectric and the electrode have flexibility, and the electret dielectric In addition, a joint part is partially provided between at least one of the electrodes, and the electret dielectric and the electrode are joined via at least a part of the joint part. However, it is possible to change the distance in the thickness direction between the electret dielectric and the electrode in at least a part of the non-joining part. An ability, the supporting member, the spaced between the adjacent vibrating generators, space is formed in the support member is not disposed partially between between the vibration generator member, said container the inner and the space between the vibrating power generator medium is filled, the pressure changes of the medium in the container, the laminated power generator and said electret dielectric and the electrode is characterized that you repeating the peeling contact It is.

  A space is provided between the power generators stacked by interposing a support member, and the medium filled in the container is also filled in the space between the power generators, thereby changing the pressure change of the medium in the container to each power generator. Since it can transmit to the surface substantially uniformly over the whole surface, each electric power generation body can generate electric power efficiently. Therefore, power generation can be performed efficiently by the laminated power generation apparatus of the present invention.

  In this power generation body, the distance between the electret dielectric and the electrode in the non-joined portion is changed by an external force, and electric charge is electrostatically induced in the electrode in accordance with the change in the distance, so that power generation can be performed. Therefore, when this power generator is used in the laminated power generator of the present invention, it is possible to efficiently generate power by changing the pressure of the medium in the container.

It is desirable that the support member be disposed between the vibration power generators of each layer so as to be in substantially the same position in the plane of the vibration power generator of each layer to be stacked. In addition, it is desirable that the vibration power generator is provided with a seal portion that prevents a medium in the container from entering between the electrode and the electret dielectric.

  By adopting such a configuration, even when a liquid such as water is sealed as the medium in the container, it is possible to prevent corrosion of the electrode and a decrease in surface potential difference between the front and back surfaces of the electret dielectric. Can do.

  Further, the container may be provided with a movable part that transmits an external force (external force) to the medium in the container, and the pressure of the medium in the container may be changed by the movement of the movable part.

  With such a configuration, a change in external force can be efficiently converted into a change in pressure of the medium in the container via the movable portion. That is, a large pressure change can be obtained as compared with the case where no movable part is provided, and a larger power generation output can be obtained.

Further, the container is a tire-wheel assembly, the stacked via the support member was the vibration power generating body is arranged inside the tire-wheel assembly, the tire due to rotation of the tire It is good also as a structure which the said vibration electric power generation body laminated | stacked generates electric power by the pressure change of the medium inside a wheel assembly.

In this way, by arranging the power generators stacked via the support member inside the tire / wheel assembly, the pressure of the medium inside the tire changes due to the rotation of the tire as the vehicle travels. Along with this, the pressure change of the medium is transmitted substantially uniformly to the surface of each of the stacked power generators, so that each stacked power generator can efficiently generate power.
Further, the vibration power generation body is curved and laminated along the outer circumferential direction of the tire / wheel,
It is desirable that the support members are arranged at predetermined intervals along the outer circumferential direction of the tire / wheel.

  According to the present invention, it is possible to provide a stacked power generation device with high power generation efficiency and high reliability with a simple structure.

(A) is a figure which shows the laminated power generator 10 of a steady state, (b) is a figure which shows the laminated power generator 10 of the state to which the external force was provided. (A) is a figure which shows the vibration electric power generation body 1, (b) is a figure which shows the vibration electric power generation body 1a. (A) is a figure which shows the electret dielectric material 3, (b) is an enlarged view of the electret dielectric material 3a using the porous material. (A) is a figure which shows the sealing member 13 of the vibration electric power generation body 1, (b) is a figure which shows the seal part 13a of the vibration electric power generation body 1b. 2A is an enlarged view of a portion A in FIG. 2A, in which FIG. 2A is a diagram illustrating a steady state, and FIG. The figure which shows the laminated power generator 10a. It is a figure which shows the laminated electric power generating apparatus 10b, (a) is circumferential direction sectional drawing, (b) is the LL sectional view taken on the line of (a). The figure which shows the electric power generation system. The figure which shows the electric power generation system 20a. (A) is a figure which shows the electric power generation system 20b, (b) is a figure which shows the electric power generation system 20c. (A) is a figure which shows the laminated power generator 12, (b) is a figure which shows the laminated power generator 12a.

<Embodiment 1 of laminated power generator>
Hereinafter, a laminated power generation apparatus according to an embodiment of the present invention will be described. As shown in FIG. 1A, the stacked power generation apparatus 10 is configured by stacking a plurality of sheet-like vibration power generation bodies 1 as power generation bodies. The vibration power generator 1 and the support member 2 provided in a plurality of layers are accommodated in a sealed container 15. The container 15 is filled with a medium 16. Except as otherwise noted, in FIG. 1 and the like, the detailed structure of the vibration power generator, the lead wires, and the like are not shown.

  The container 15 accommodates the laminated vibration power generator 1 and the like, and the medium 16 is sealed inside. In the stacked vibration power generation bodies 1, a space is formed between the stacked vibration power generation bodies 1 by interposing the support member 2 between the adjacent vibration power generation bodies 1, and the vibration power generation bodies 1. The space between is filled with a medium 16 sealed in the container. By applying an external force such as pressure or vibration to the container 15, part or all of the container 15 can be deformed. At this time, as the container 15 is deformed, the pressure of the medium 16 in the container 15 changes, and the change in the pressure of the medium 16 with respect to the surface of each vibration power generator 1 to be stacked is substantially entirely (the support member 2 is Can be transmitted substantially uniformly). Therefore, the pressure in the thickness direction of the vibration power generator 1 can be varied, and the compressive deformation and the extension deformation in the thickness direction of the vibration power generator 1 can be generated.

  Although the material and shape of such a container 15 are not specifically limited, For example, it can be comprised with either a metal, a plastic, rubber | gum, or these combination. Further, the shape of the container 15 may be, for example, a box-shaped container, and an airtight container used for an air mat, an air bed, a water mat, a water bed, or the like can be applied.

  The medium 16 enclosed in the container 15 is not particularly limited, but may be any gas or liquid having fluidity. The medium 16 may be appropriately selected according to the type and usage of the container 15 such as air, water, and oil. Selected. For example, in the case of an air mat, an air bed, etc., it is normally air, and in the case of a water mat, a water bed, etc., water is used.

  The vibration power generator 1 is installed on a part of the inner surface of the container 15. Further, a plurality of vibration power generation bodies 1 are stacked on the vibration power generation body 1 via the support member 2. That is, it is preferable that a support member 2 is provided between the vibration power generators 1, and the vibration power generators 1 are preferably joined together via the support member 2. As a joining method of the vibration power generator 1 and the support member 2, Can use adhesive bonding, adhesive bonding, adsorption bonding, and the like, but is not particularly limited. FIG. 1A shows an embodiment in which the vibration power generator 1 is arranged so as to be in direct contact with a part of the bottom surface of the container 15, but between the inner surface (for example, the bottom surface) of the container 15 and the vibration power generator 1. By interposing the support member 2 in the space, a space may be formed between the inner surface of the container 15 and the vibration power generator 1, and the medium 16 may be filled in the space.

  The support member 2 is disposed with a space between the stacked vibration power generators 1. That is, a space is formed between the vibration power generators 1 in which the support member is not interposed. The arrangement of the support member 2 in the plane of the vibration power generator 1 is such that the medium 16 in the container 15 is filled in the space formed between the vibration power generators 1 to be stacked. The pressure change is not particularly limited as long as the change in pressure can be transmitted to the surface of each of the stacked vibration power generation bodies 1. For example, the support member 2 is spaced a predetermined distance in the plane of the vibration power generation body 1. It can be arranged to be scattered. It is preferable that the support member 2 is provided at substantially the same position in the plane of each vibration power generator 1 to be laminated. That is, it is preferable that the support member 2 is substantially aligned with the stacking direction when viewed from the front. By doing in this way, it can prevent that the vibration electric power generation body 1 bends with the dead weight of the support member 2. FIG.

  The material of the support member 2 is not particularly limited, but a relatively hard metal material, plastic material, rubber material, or the like can be applied. When used in an environment where a relatively large external force is applied to the laminated power generation apparatus 10, the support member 2 is preferably an elastic body typified by rubber or the like. As the elastic body, for example, rubbers such as nitrile rubber, ethylene propylene rubber, acrylic rubber, urethane rubber, chloroprene rubber, silicone rubber, fluorine rubber, and natural rubber can be used.

  As shown in FIG. 2A, the vibration power generator 1 is mainly composed of an electret dielectric 3, electrodes 5a and 5b, a joint 7 and the like. Electrodes 5 a and 5 b are arranged on both surfaces of the electret dielectric 3 so as to face the electret dielectric 3, respectively. Further, a joint 7 is provided between the electret dielectric 3 and the electrode 5b. The joint 7 is for joining the electret dielectric 3 and the electrode 5b. That is, the electret dielectric 3 and the electrode 5b are joined via the joint 7, and a gap (air gap) corresponding to the thickness of the joint 7 is formed between them. Although the material of the junction part 7 is not specifically limited, For example, it is comprised with an insulating adhesive agent.

  The electrode 5a and the electret dielectric 3 are joined over substantially the entire surface. The electrode 5a and the electret dielectric 3 are joined together by, for example, heat fusion or adhesion. However, when an adhesive is used, it is desirable to make the adhesive layer as thin as possible. For example, it is desirable to make it sufficiently thin with respect to the distance between the electrodes 5 a and 5 b and the thickness of the electret dielectric 3.

  The electrodes 5a and 5b have a two-layer structure in which the conductor layer 6 and the resin layer 8 are laminated. Such electrodes 5a and 5b may be obtained by bonding a resin sheet and a metal foil by an adhesive, heat welding, or the like, or by performing metal vapor deposition or metal plating on the surface of the resin sheet. Good. In any case, it is sufficient that the conductor layer can be formed on the sheet (film) resin.

In addition, as a conductor which comprises the conductor layer 6, aluminum, tin, copper, or these alloys can be selected suitably.
Examples of the resin constituting the resin layer 8 include polyethylene, polypropylene, polyethylene terephthalate, polyimide resin (for example, Kapton (registered trademark)), and fluorine resin (for example, fluoroethylenepropylene and polytetrafluoroethylene). Plastic materials and rubber materials such as nitrile rubber, ethylene propylene rubber, acrylic rubber, urethane rubber, chloroprene rubber, silicone rubber, fluorine rubber, and natural rubber can also be used.

  The two-layered electrodes 5a and 5b are desirable in that electrical insulation from the surroundings can be ensured and waterproofness and moistureproofness can be improved. Further, the electrode 5b is desirable in that the followability of the electrode with respect to an external force or the like can be further improved. For example, only a thin conductor has a small restoring force to the original shape after being deformed by an external force. However, if the rigidity is increased only with the conductor, there is a problem of an increase in weight because it is necessary to increase the thickness of the conductor portion. In addition, this may cause the movement of the electrode to become dull.

  On the other hand, in this embodiment, by providing the resin layer 8, it is possible to suppress problems due to weight increase and increase the followability of the electrode 5 b against external force, that is, rigidity. Note that the electrodes 5a and 5b may be formed of only the conductor layer 6 as long as electrical insulation or the like can be ensured by a method such as interposing an insulating member separately, for example.

  As a material of the electret dielectric 3, for example, a resin such as polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, or the like can be used. Further, depending on the use conditions, for example, a polyimide-based resin (for example, Kapton (registered trademark)) or a fluorine-based resin (for example, fluoroethylenepropylene or polytetrafluoroethylene) having excellent high-temperature characteristics can be used. As the rubber material, for example, nitrile rubber, ethylene propylene rubber, acrylic rubber, urethane rubber, chloroprene rubber, silicone rubber, fluorine-based rubber, and the like can be used.

  As shown in FIG. 3A, both surfaces of the electret dielectric 3 are charged with charges having opposite polarities. It should be noted that only one side of the electret dielectric 3 may be charged with one of the polarities, or both sides of the electret dielectric 3 may be charged with one of the polarities. It is sufficient that there is a potential difference (surface potential difference) between both surfaces (front surface and back surface) of the dielectric 3. Such an electret dielectric 3 can be formed, for example, by subjecting the surface of an insulating resin sheet or resin film to a charging process by corona discharge.

  The setting of the potential difference between the front and back surfaces of the electret dielectric 3 depends on the length of the air gap between the electrodes 5a and 5b and the electret dielectric 3 (or the thickness of the junction 7). That is, it is desirable that the potential difference is set so that a decrease in potential difference due to air discharge in the air gap is reduced.

  The electret dielectric 3 and the electrodes 5a and 5b in the vibration power generator 1 are all flexible. For example, the electret dielectric 3 is made of the above-described resin or the like. Therefore, the vibration power generation body 1 has flexibility as a whole, and can be modified to suit various installation locations.

  As shown in FIG. 2A, a non-joining portion 9 is formed between the electret dielectric 3 and the electrode 5b at a portion other than the joining portion 7. In other words, in the non-joining portion 9, the distance between the electret dielectric 3 and the electrode 5b is easily changed due to the deformation. For example, the electrode 5b can be brought into contact with the surface of the electret dielectric 3 by deformation of the electrode 5b.

  In addition, as shown in FIG.3 (b), the electret dielectric material 3a which consists of porous materials can also be used. When voltage is applied to both surfaces of a porous material having fine pores 4 therein, corona discharge easily occurs in the pores 4. By this corona discharge, the electret dielectric 3a charged also in the hole wall surface and in the vicinity of the hole wall surface can be easily manufactured. In addition, as shown in FIG. 3B, the electrification dielectric 3a has a positive charge in the voltage application direction (in this case, the thickness direction of the electret dielectric 3a). It is considered that a negatively charged region is formed. Further, if the holes 4 are present inside the electret dielectric 3a, the electret dielectric 3a as a whole can be easily deformed. Therefore, not only the electrodes 5a and 5b but also the electret dielectric 3a itself can be easily deformed with a smaller external force. For this reason, not only the gap length between the electrode 5b and the electret dielectric 3a but also the thickness of the electret dielectric 3a is likely to change. Therefore, the distance between the electrodes 5a and 5b is easily changed and the amount of change is increased, so that the amount of charge electrostatically induced in both electrodes is increased and the power generation efficiency is improved.

  As a material of the porous electret dielectric 3a, a porous plastic or porous rubber which is an insulator and is made of the same material as the electret dielectric 3, or a sheet-like fiber body can be used. . The porous plastic includes foamed plastic. The porous rubber includes foamed rubber. As the sheet-like fiber body, a nonwoven fabric or felt can be used. Among these, non-woven fabrics are used as electret filters in air cleaners, masks, etc., and have good electret characteristics. In the following description, an example using the electret dielectric 3 having no holes 4 is shown.

  A gap (air gap) formed between the electrode 5 b of the vibration power generator 1 and the electret dielectric 3 is preferably sealed with respect to the outside of the vibration power generator 1. For example, as shown in FIG. 4A, the outer peripheral portion of the vibration power generator 1 is covered and sealed with a seal member 13. The seal member 13 is bonded to the electrodes 5a, 5b, etc. with an adhesive or the like.

  In this case, as the sealing member 13, for example, it is preferable to select a material having high watertightness (waterproofing or moistureproofing) or high airtightness. In this way, it is possible to prevent the medium 16 in the container 15 from entering a gap (air gap) provided between the electrode 5b and the electret dielectric 3. Further, when the medium 16 is water, the electrodes 5a and 5b can be prevented from corroding. Furthermore, it is possible to prevent the potential difference between the front and back surfaces of the electret dielectric 3 from being lowered due to the presence of moisture.

  Further, the resin layer 8 constituting the electrodes 5a and 5b is formed so as to protrude from the outer periphery of the conductor layer 6 as in the vibration power generator 1b shown in FIG. The upper and lower protruding resin layers 8 may be joined together to form the seal portion 13a. The bonding method between the protruding upper and lower resin layers 8 is not particularly limited as long as it can prevent the medium 16 from entering. For example, a bonding method using an adhesive or a bonding method using heat fusion is employed. can do. Thus, if the sealing method can prevent the medium 16 from entering the gap (air gap) formed between the electrode 5b of the vibration power generator 1 and the electret dielectric 3, the sealing method is the example shown in the figure. It is not limited to any form, and any form may be used.

  Next, the power generation mechanism of the vibration power generator 1 will be described. FIG. 5 is an enlarged view of a portion A in FIG. As shown in FIG. 5A, for example, in a steady state (a state where no external force is applied; the same applies hereinafter), the non-joint portion 9 has a joint portion 7 between the electrode 5 b and the electret dielectric 3. An air gap length B corresponding to the thickness is formed. From this state, as shown in FIG. 5B, when the external force C is applied in the thickness direction of the vibration power generator 1, the electrode 5b (and the electret dielectric 3) is deformed. At this time, the air gap length B changes in the direction of shortening, and the electrode 5b and the electret dielectric 3 may contact at the contact portion 11.

  That is, at the position corresponding to the contact portion 11, the distance in the thickness direction between the electrode 5 b and the electret dielectric 3 (air gap length B) can be changed to zero. In accordance with this change in distance, electric charges are electrostatically induced in both electrodes 5a and 5b to generate electricity. In addition, when returning from the state of FIG. 5B to the state of FIG. 5A, the distance change between the electrode 5b and the electret dielectric 3 is similarly changed (change in the direction of increasing the air gap length B). Power is generated by electrostatic induction according to the above. The power generation output voltage accompanying the change in the distance between the electrode 5b and the electret dielectric 3 is highest immediately before the electrode 5b and the electret dielectric 3 are brought into contact with each other by deformation and immediately after peeling.

  As described above, the vibration power generator 1 used in this embodiment displaces the electrode 5b and the electret dielectric 3 relatively in the thickness direction, and changes the air gap length B corresponding to the distance between them. Therefore, it is possible to generate power efficiently.

  Here, although depending on the material of the joint 7, the change in the distance between the electrode 5 b and the electret dielectric 3 in the joint 7 is small as compared with the change in the air gap length B of the non-joint 9 due to external force. Thus, since the distance between the electrode 5b and the electret dielectric 3 is unlikely to change at the joint portion 7, it is difficult to contribute to power generation. Therefore, it is desirable to make the joint portion 7 as small as possible and make the total area of the joint portion 7 in the vibration power generator 1 as small as possible. In addition, it is desirable that the distance between the joint portions 7 adjacent to each other be a distance that can maintain the air gap length B of the non-joint portion 9.

  Note that the joints 7 are arranged on the surface of the electret dielectric 3 in a repetitive pattern such as a dot shape, a stripe shape, or a lattice shape.

  In addition, the joining part 7 may replace the adhesive and join the electrode 5b and the electret dielectric 3 partly by direct thermal fusion. In this case, a portion other than the joint portion becomes the non-joint portion 9. Even in this case, a minute gap is formed between the electrode 5 b and the electret dielectric 3 in the non-joining portion 9. In addition, in the non-joining part 9, the electrode 5b and the electret dielectric material 3 may be partially in contact. Further, instead of the adhesive, the electrode 5b and the electret dielectric 3 may be bonded to the bonding portion 7 via another member.

  As shown in FIG. 1 (a), in the laminated power generation apparatus 10, a plurality of vibration power generation bodies 1 are joined and stacked via support members 2, and a space is formed between the vibration power generation bodies 1 and 1. A space formed between the vibration power generation bodies 1 and 1 is filled with a medium 16 sealed in a container 15. Accordingly, when an external force is applied to the container 15 and the container 15 is deformed, for example, when the medium 16 in the container 15 is compressed and the pressure of the medium 16 increases, as shown in FIG. Is transmitted to the surface of each of the vibration power generation bodies 1 stacked, and the pressure (arrow G in the figure) applied to each vibration power generation body 1 increases. When an external force is applied to the lower surface of the container 15, not only the pressure change of the medium 16 but also the deformation or vibration of the lower surface of the container 15 caused by the applied external force makes contact with the lower surface of the container 15. It may be given to the body 1.

  As described above, the distance (air gap length) between the electrode 5b and the electret dielectric 3 can be changed by changing the pressure in the thickness direction of the vibration power generator 1. That is, the power generation output can be obtained by changing the length of the air gap between the electrode 5b and the electret dielectric 3 in the non-joint portion 9 (see FIG. 5).

  The support member 2 for joining the vibration power generators 1 in a state where a space is provided between the stacked vibration power generators 1 is sealed in the container 15 in the space between the vibration power generators 1 of each layer. The medium 16 is arranged so as to go around. For this reason, compared with the case where the vibration power generation body 1 is directly laminated, when the vibration power generation body 1 is laminated with the support member 2 interposed, substantially the entire surface of the vibration power generation body 1 of each layer (the support member 2). The power generation output can be improved since a substantially equal force can be applied to (except for the portion joined at). As described above, since the outer periphery of the vibration power generator 1 is sealed, the medium 16 does not enter the gap (air gap) between the electrode 5 b and the electret dielectric 3. Therefore, the air gap length between the electrode 5b and the electret dielectric 3 can be changed by the pressure change of the medium 16.

When the external force applied to the container 15 is unloaded, the pressure of the medium 16 in the container 15 returns to a steady state. Also at this time, as shown in FIG. 5, the shape of the vibration power generation body 1 of each layer also returns to the steady state shape. And the distance changes.
As described above, the laminated power generation apparatus 10 causes a change in the pressure of the medium 16 in the container 15 due to a change in the external force applied to the container 15, and transmits the change in the pressure of the medium 16 to the vibration power generator 1 of each layer. By deforming the vibration power generator 1, power generation can be performed efficiently.

  Note that when the vibration power generator 1 is deformed by an external force and the electrode 5b and the electret dielectric 3 are repeatedly contacted and peeled, an air discharge may occur between the electrode 5b and the electret dielectric 3. Conceivable. When such air discharge occurs, it is considered that the potential difference between the front surface and the back surface of the electret dielectric 3 decreases. Therefore, there is a possibility that power generation is not performed as it is used. However, the inventors have found that even if such contact and peeling are repeated, “a phenomenon in which power generation is not immediately performed due to a decrease in the potential difference between the front and back surfaces of the electret dielectric 3” occurs. Found no. Therefore, it is desirable that the vibration power generator 1 constituting the laminated power generator 10 be deformed so that the electrode 5b and the electret dielectric 3 are repeatedly contacted and peeled off by an external force.

  Moreover, in this invention, as shown in FIG.2 (b), the vibration electric power generation body 1a by which the junction part 7 was provided between both the electret dielectric material 3 and electrode 5a, 5b can also be used. The vibration power generation body 1 a has substantially the same configuration as the vibration power generation body 1, but a partial joint portion 7 and a non-joint portion 9 are also provided between the electrode 5 a and the electret dielectric 3.

  Here, in the vibration power generator 1 shown in FIG. 2 (a), since one electrode 5a is joined to the electret dielectric 3 over the entire surface, power is generated only by a change in the distance between the electrode 5b and the electret dielectric 3. Is called. However, as shown in FIG. 2 (b), non-joined portions 9, 9 (air gaps) are formed between both the electrodes 5a, 5b and the electret dielectric 3, and power is generated by changing the distance between the air gaps. In the vibration power generator 1a that performs the above, the distance change direction (decreasing direction or increasing) of both the air gap between the electret dielectric 3 and the electrode 5a and the air gap between the electret dielectric 3 and the electrode 5b If the timing (phase) does not match the timing (phase), the power generation output voltages generated between the electrodes 5a and 5b may cancel each other.

  Therefore, in order to efficiently generate power with the whole vibration power generator 1a of FIG. 2B, the direction (decreasing direction or increasing direction) and timing of the distance change between the electrodes 5a, 5b and the electret dielectric 3 are used. It is desirable to match (phase) in each part of the vibration power generator 1a. For example, when the electrodes 5a and 5b and the electret dielectric 3 are repeatedly contacted and peeled, it is desirable to match the timings of the contact and peeling at each part of the vibration power generator 1a.

  In addition, in order to make the timing and the direction of the distance change between the electrodes 5a, 5b and the electret dielectric 3 coincide with each other on the front and back of the electret dielectric 3 in the vibration power generator 1a, the plane of the joint 7 on the front and back of the electret dielectric 3 It is desirable to match the arrangement.

  In the present invention, the pressure change of the medium 16 in the container 15 is applied substantially uniformly and substantially simultaneously over substantially the entire surface of the vibration power generator 1a (excluding the portion to which the support member 2 is joined). For this reason, when the pressure change of the medium 16 in the container 15 occurs, the respective pressure changes applied to the front and back electrodes 5a and 5b of the vibration power generator 1a via the medium 16 have substantially the same direction and timing. Match. Therefore, in general, the timings of contact and peeling between the electrodes 5a and 5b and the electret dielectric 3 can be matched in each part of the vibration power generator 1a.

  On the other hand, in the vibration power generator 1 of FIG. 2 (a), power is generated only by a change in the distance between the electrode 5b and the electret dielectric 3, so that the electrodes 5a and 5b of the vibration power generator 1a of FIG. It is not necessary to match the direction and timing (phase) of the distance change between each and the electret dielectric 3. Further, the total thickness can be reduced by the thickness of the joint portion 7. Thus, considering the cost reduction due to the simplification of the structure and the possibility of thinning, it is desirable to use the vibration power generator 1 although the power generation amount is slightly reduced.

  As described above, the vibration power generators 1 and 1a can be appropriately selected according to usage conditions and the like. In addition, although the following description demonstrates the example using the vibration electric power generation body 1, the vibration electric power generation body 1a can also be used.

  In addition, when taking out the electric power generation output obtained by the lamination | stacking electric power generation apparatus 10 to the exterior of the container 15, what is necessary is just to provide the container 15 with the through-hole for letting the lead wire connected to each vibration electric power generation body 1 pass, for example. . The through hole may be sealed with airtightness or watertightness after the lead wire is inserted. Further, the container 15 may be provided with terminals having airtightness and watertightness, and lead wires may be connected to the terminals.

  As described above, the vibration power generation body 1 constituting the laminated power generation apparatus 10 holds a predetermined air gap length between the electrode 5b and the electret dielectric 3 by the joint portion 7, and thus is caused by an external force. A deformation allowance between the electrode 5b and the electret dielectric 3 (a deformation allowance in the thickness direction such that the distance between the electrode 5b and the electret dielectric 3 changes) can be secured. In addition, by optimizing the thickness of the joint portion 7 and the thickness of the support member 2, the vibration power generator 1 of each layer to be laminated with respect to external force or vibration applied to the container 15 constituting the laminated power generator 10. The contact and peeling between the electrode 5b and the electret dielectric 3 can be repeated. For this reason, high power generation output can be obtained.

  In the laminated power generation apparatus 10, the plurality of vibration power generation bodies 1 are stacked via the support member 2 so as to form a space between the vibration power generation bodies 1. Therefore, the medium 16 can be filled in the space formed between the vibration power generators 1 in the container 15. For this reason, when an external force is applied to the container 15, a substantially uniform force can be applied to all the vibration power generators 1 through the medium 16 in the thickness direction. For this reason, a high power generation output can be obtained.

  Further, when the container 15 itself vibrates due to the container 15 being placed on a vibrating object or the like, each vibration power generator 1 can be vibrated from the container 15 via each support member 2. When the vibration power generation body 1 vibrates, the part of the vibration power generation body 1 other than the part joined to the support member 2 is bent and deformed with the support member 2 as a fulcrum. By such bending deformation of the vibration power generator 1, the contact and peeling between the electrode 5 b and the electret dielectric 3 can be repeated in the non-joint portion 9. That is, the stacked power generation apparatus 10 can obtain a power generation output by deformation of the container 15 due to external force or vibration applied to the container 15 or vibration of the container 15 itself.

<Embodiment 2 of laminated power generator>
Next, another embodiment will be described. In the following description, components having the same functions as those of the stacked power generation apparatus 10 are denoted by the same reference numerals as those in FIG. 1 and the like, and redundant descriptions are omitted.

  In the laminated power generator 10a shown in FIG. 6, the container 15 is provided with a piston mechanism. That is, a cylinder 25 that opens to the outside is formed in a part of the container 15, and the movable portion 23 is inserted into the cylinder 25. A seal member 27 is provided on the outer periphery of the movable portion 23 to seal between the inner periphery of the cylinder 25. The seal member 27 is, for example, a rubber O-ring. A diaphragm 29 is provided on the upper portion of the movable portion 23. Note that an external force may be directly applied to the movable portion 23 without using the diaphragm 29.

  The movable part 23 can slide up and down in the cylinder 25. Therefore, when an external force is applied to the diaphragm 29 in the vertical direction, the movable portion 23 slides up and down in the cylinder 25 accordingly. The pressure of the medium 16 in the container 15 changes due to the vertical movement of the movable portion 23. As a result, since the force (pressure) applied in the thickness direction of the vibration power generator 1 changes, the air gap length between the electrode 5b of the vibration power generator 1 and the electret dielectric 3 changes (see FIG. 5). Can be obtained.

  The size, material, and structure of the piston mechanism are not limited to the illustrated example. Considering the size of the container 15, the assumed external force, the pressure to be applied to the medium 16, and the like, the cross-sectional area of the movable portion 23, the inner diameter of the cylinder 25, and the like are set. Further, in order to efficiently apply pressure fluctuations to the medium 16 by the operation of the movable portion 23 in the piston mechanism portion, the container 15, the movable portion 23, the cylinder 25, and the like need to have high rigidity. Therefore, a suitable material is selected in order to ensure the required rigidity. In addition, as such a material, a metal and a plastic material can be selected, for example, and it designs by appropriate thickness.

  Further, as described above, the medium 16 is not particularly limited. However, it is desirable that the medium 16 is easily sealed by the seal member 27 and is capable of efficiently changing the pressure with respect to wear in the piston mechanism portion and the operation of the movable portion 23. For example, it is desirable to use insulating oil having a low volumetric compressibility and appropriate viscosity and lubricity.

  Further, the vibration power generator 1 may not be disposed on the bottom surface of the container 15 but may be provided on the distal end side of the movable portion 23 or may be provided on another structure provided in the container 15 or the like. Further, the piston structure portion may be provided in any direction such as a side surface or a bottom surface instead of above the container 15, or may be provided at a plurality of locations.

  As described above, the laminated power generation apparatus 10 a can obtain a power generation output by the external force applied to the container 15, similarly to the laminated power generation apparatus 10. Even when the entire container 15 vibrates, the vibration power generator 1 can be vibrated through the container 15 and the support member 2 and the like, so that the vibration power generator 1 can be generated.

<Embodiment 3 of laminated power generator>
A laminated power generation apparatus 10 b shown in FIG. 7 uses a tire / wheel assembly as a container 15. That is, the laminated body comprised by the some vibration electric power generation body 1 is arrange | positioned inside the sealed space enclosed by the tire 15a and the wheel 18. In FIG. The tire 15a may be an automobile tire as shown, or a bicycle or motorcycle tire.

  On the outer peripheral surface side of the wheel 18, the vibration power generator 1 and the support member 2 are stacked and arranged. As shown in FIG. 7A, the vibration power generator 1 is curved and laminated along the outer circumferential direction of the wheel 18, and the support members 2 are arranged at predetermined intervals along the outer circumferential direction of the wheel 18. . A space is formed by the support member 2 being interposed between the vibration power generators 1 stacked, and the space 16 is filled with the medium 16. As shown in FIG. 7B, the support member 2 is provided in the vicinity of both ends of the vibration power generator 1 in the width direction of the tire 15a. The medium 16 is generally air, but may be nitrogen gas. Further, in the laminated power generation apparatus 10b shown in FIG. 7, the laminated power generation apparatus 10 is configured by laminating a plurality of vibration power generation bodies 1, but the laminated power generation apparatus 10 of the present invention uses a plurality of vibration power generation bodies 1. However, the present invention is not limited to the configuration of stacking. For example, it is good also as a structure laminated | stacked by winding the strip | belt-shaped vibration electric power generation body 1 around the outer periphery of the wheel 18 in multiple rolls. Also in this case, a space is formed between the layers of the vibration power generation body 1 by interposing the support member 2 between the layers of the vibration power generation body 1 laminated by being wound around the outer periphery of the wheel 18 a plurality of times. The medium 16 can be filled.

  When the tire 15a rotates (arrow J in the figure), the tire 15a undergoes a large deformation at a portion in contact with the road surface. Therefore, the medium 16 in the sealed container surrounded by the tire 15a and the wheel 18 is subjected to pressure fluctuation due to external force, as in the case of the container 15 described above. Therefore, the force (pressure) applied to each vibration power generator 1 is changed by the pressure fluctuation of the medium 16, and power can be generated efficiently.

  Further, during the traveling of the automobile, vibration due to rotation of the tire 15a itself and vibration according to the road surface condition are generated. Therefore, power generation is also performed by transmitting the vibration accompanying the rotation of the tire 15a and the wheel 18 during traveling of the automobile to the vibration power generator 1 via the support member 2 and the like. For example, when vibration is transmitted to the vibration power generator 1, the portions of the vibration power generator 1 other than the portion to be joined to the support member 2 are bent and deformed with the support member 2 as a fulcrum. Power generation can be obtained by repeating contact and peeling between 5b and the electret dielectric 3.

  As the tire 15a rotates, the flow of the medium 16 in the sealed space surrounded by the tire 15a and the wheel 18 is relatively opposite to the rotational direction relative to the rotational motion of the tire 15a and the wheel 18. (Airflow) is generated. In particular, when the rotation speed of the tire 15a changes, a large flow (airflow) of the medium 16 is likely to occur. Accordingly, an air flow is generated between the stacked vibration power generators 1. It is also possible to generate power by generating a vortex (Karman vortex) between the vibration power generators 1 by this air flow, and vibrating and deforming the vibration power generator 1 by this vortex.

<Embodiment 1 of power generation system>
Next, a configuration of a power generation system using the above-described stacked power generation apparatus will be described. In the following example, an example in which the laminated power generator 10 using the vibration power generator 1 is applied is shown, but other laminated power generators may be used. In the following drawings, the detailed structures of the support member 2 and the vibration power generator 1 are not shown.

  The power generation system 20 shown in FIG. 8 has positive and negative electrodes when external forces are received in the same direction for each of the plurality of vibration power generators 1 constituting the laminated power generator 10. Are electrically connected to each other. The electric circuit thus configured is connected to one rectifier circuit 17. The rectifier circuit 17 is preferably a full-wave rectifier circuit in which, for example, four diodes are combined, but a half-wave rectifier circuit using one diode can also be used. As the diode, a diode having a small forward resistance, a large reverse resistance, a high time response speed, and a small loss is desirable. The rectifier circuit 17 converts an AC voltage that is an output voltage from the vibration power generator 1 into a DC voltage.

  The rectifier circuit 17 is connected to the power storage circuit 19. The power storage circuit 19 includes a power storage unit such as a capacitor and a rechargeable battery, a switch, and the like. The power storage circuit 19 stores the output voltage rectified by the rectifier circuit 17. Note that it is desirable that the capacitor or the battery has a small leakage current in a charged state and a small charging loss.

  Here, the polarity of the charge induced in the electrode of each vibration power generation body 1 is determined by the deformation state and deformation direction (compression direction and extension direction) of the vibration power generation body given by external force or vibration. Therefore, the power generation output voltage of the vibration power generator 1 is an AC voltage. At this time, when the polarity and phase of the power generation output of each vibration power generation body 1 substantially match the external force or vibration applied to the stacked power generation apparatus 10, each vibration power generation body as in the power generation system 20. The one electrode can be connected in parallel with the same polarity of the power generation output.

  By doing in this way, the one rectifier circuit 17 can be connected to the circuit connected in parallel so that each vibration electric power generation body 1 may match polarity. Therefore, the number of rectifier circuits 17 can be reduced, the configuration of the power generation system 20 can be simplified, and rectification loss can be reduced.

<Embodiment 2 of power generation system>
Next, another embodiment will be described. In the following description, components having the same functions as those of the power generation system 20 are denoted by the same reference numerals as those in FIG.

  In the power generation system 20 a illustrated in FIG. 9, the rectifier circuit 17 is connected to each of the plurality of vibration power generation bodies 1 configuring the stacked power generation apparatus 10. Further, the rectifier circuits 17 are connected to each other so that the polarities of the output voltages of the rectifier circuits 17 are aligned. Further, a storage circuit 19 is connected to a circuit to which each rectifier circuit 17 is connected.

  As described above, when the polarity and phase of the power generation output of each vibration power generator 1 substantially match the external force applied to the laminated power generation apparatus 10, each vibration power generation as in the power generation system 20 is performed. The electrodes of the body 1 can be connected in parallel with the same polarity of the power generation output. However, if a circuit such as the power generation system 20 is configured when the polarity or phase of the power generation output of each vibration power generation body 1 does not match the external force applied to the laminated power generation apparatus 10, the power generation of each vibration power generation body 1 is performed. The outputs cancel each other, and the power generation output of the entire stacked power generation apparatus is significantly reduced.

  In such a case, as in the power generation system 20a, each rectifier circuit 17 is connected to each vibration power generator 1 to convert it to a DC voltage, and each rectifier circuit 17 is matched to the polarity after the DC voltage conversion. Are connected in parallel, cancellation of the power generation outputs as described above can be prevented.

<Embodiment 3 of power generation system>
A power generation system 20b shown in FIG. 10A uses a power storage circuit 19a that is a first power storage circuit and a power storage circuit 19b that is a second power storage circuit, and a DC voltage converter 21 between the power storage circuits 19a and 19b. Is connected.

  The power storage circuit 19 a stores the direct current voltage that is changed to direct current by the rectifier circuit 17. The DC voltage converter 21 converts the DC voltage stored in the storage circuit 19a into a predetermined DC voltage. The DC voltage that has become a predetermined voltage in this manner is stored in the storage circuit 19b.

  Usually, the power generation output generated by the stacked power generation apparatus 10 is used to drive other external circuits. Therefore, it is necessary to convert the voltage into a voltage necessary for driving the external circuit. In the power generation system 20b, since it is stored in the power storage circuit 19b after being converted to the drive voltage of the connected external circuit, the external circuit can be driven by the power storage circuit 19b.

  In addition, as such a circuit, it is applicable also to what connected the rectifier circuit 17 to each vibration electric power generation body 1 like the electric power generation system 20c shown in FIG.10 (b). In this case, the output voltage of each rectifier circuit 17 may be connected in parallel so as to have the same polarity, and connected to the power storage circuit 19a.

<Uses of laminated power generation apparatus of the present invention>
The laminated power generation apparatus of the present invention is installed on an object that vibrates when a vehicle such as a noise barrier installed on a road surface, a bridge, a highway, or the like, a railroad rail, a sleeper, or the like passes. be able to. At this time, the obtained electric power senses the surrounding conditions (temperature, humidity, brightness, vibration acceleration, distortion, displacement, wind speed, vehicle speed and weight, etc.) of the vibration object, and drives the sensor for measurement. Can be made. Further, it can be used as a power source for an information collecting system or a monitoring system that transmits information obtained by a sensor by wire or wireless.

  Moreover, when the electric power obtained is large, it can also be used as one of distributed power sources for lighting such as roads, auxiliary power sources for traffic lights, and smart grid concepts. In addition, on a road or the like, power may be generated by vibration when a vehicle or a person passes, thereby sensing information that the vehicle or person has passed and ambient brightness. In this case, only when the surroundings are dark, the stored power can be used to light the front of the vehicle or person, the guide plate, the guide light, and the like.

  Moreover, the laminated power generation device of the present invention can itself be used as a sensor for detecting a change in external force such as vibration. For example, it can be used in a security system in which a laminated power generation apparatus is installed on a site, a passage, or the like, generates power by vibration when a suspicious person enters, and transmits suspicious person intrusion information.

  Further, the present invention can also be applied to a moving body that itself vibrates, such as a vehicle, an aircraft, a person, or an animal. For example, a laminated power generation device can be installed on the body or suspension of an automobile, and various sensors can be driven by the generated power. Moreover, when the electric power obtained is large, it can also be used as a power source for auxiliary charging to a secondary battery of an automobile. Similarly, it is applied to the body of a railway vehicle, the inside of a vehicle, wheels, dampers, suspensions, etc., and power for systems that monitor various parts of the vehicle by driving various sensors, interior lighting, emergency lights, advertising displays It can also be used as an (auxiliary) power source for panels and the like.

  As a sensor and power source for a system that installs a laminated power generator in a seat of a vehicle, etc., generates electricity by vibration when a person is seated or while seated, detects a person's seating, and informs the driver's seat or cockpit It can also be used.

  The laminated power generator of the present invention can also be applied to a building structure such as a building, factory, or house, or a structure included in a building structure. For example, the above-mentioned building structure includes the vibration of the ground, the influence of wind, the movement of people inside, the mechanical devices installed inside (for example, rotating machines such as motors, production equipment in factories, elevators and escalators, etc. In response to vibration when an elevator, an air conditioning fan, etc.) are operating, it itself vibrates. Therefore, it is also possible to install a laminated power generator in a site that is susceptible to such vibration and generate electric power, and use it as a driving power source such as an emergency power source, various sensors, or a communication power source.

  Further, the laminated power generation device of the present invention can be applied to portable electronic devices such as a personal computer, a mobile phone, and a remote controller, and input devices such as a touch panel, a keyboard, and a push button. For example, a laminated power generation device is installed in the case of a portable electronic device such as a personal computer or a mobile phone, and the power is generated by vibration during transportation or use of the device and used as an auxiliary charging power source for a secondary battery. You can also. It can also be used as a power source for a system that generates power by vibration of an input device and transmits input information to a master station or the like.

  In addition, for example, places where outdoor strong winds can be obtained, places where air can be obtained such as in air conditioning ducts, exhaust ducts, tunnels, places where wind can be obtained from bicycles, motorcycles, automobiles, railway vehicles, etc. The laminated power generator of the present invention can also be applied to places where wind is obtained such as traffic lights, road signs, guardrails and the like. In this case, it is possible to apply external force and vibration to the laminated power generator by directly applying wind to the laminated power generator, or the installation target of the laminated power generator vibrates by receiving wind. Power generation may be obtained as a structure that imparts vibration of the installation object to the laminated power generation apparatus. The sensor for sensing and measuring the surrounding state can be driven by the electric power from the laminated power generation apparatus obtained there. Further, it can be used as a power source for an information collection system or a monitoring system that transmits information obtained by a sensor. It can also be used as a power source for light-emitting signs installed on the road, on the side of the road, in tunnels, on construction sites, etc. for the purpose of information transmission including position indication and alerting.

  Further, for example, the laminated power generation apparatus of the present invention can be installed in a place with a water flow such as a river, industrial water, agricultural water, sewage, tap water, a drain pipe, a water pipe, or the like. In this case, it is possible to apply external force and vibration to the laminated power generation apparatus by directly applying a water flow to the laminated power generation apparatus, or the installation target of the laminated power generation apparatus may vibrate in response to the water flow. Power generation may be obtained as a structure that imparts vibration of the installation object to the laminated power generation apparatus. Drive the sensor that senses and measures water and piping temperature, flow rate, piping vibration acceleration, temperature around the water current, weather information such as humidity, brightness, and wind speed with the power from the laminated power generator be able to. Further, it can be used as a power source for an information collection system or a monitoring system that transmits information obtained by a sensor.

  Further, for example, the laminated power generation apparatus of the present invention can be applied to a place receiving wave power, such as a breakwater, a coast, a quay, a buoy, a ship, or the like, a seabed portion or a submarine portion having a large tidal power or current. In this case, it is possible to apply external force and vibration to the laminated power generation device by directly applying wave power to the laminated power generation device, or the installation target of the laminated power generation device may vibrate in response to the wave power. In addition, power generation may be obtained as a structure that imparts vibration of the installation target object to the laminated power generation apparatus. Using the power from the laminated power generator, the sensor that senses and measures seawater temperature, current velocity and direction, wave height, sea and coastal temperature, humidity, brightness, wind speed, etc. is driven. Can be made. Further, it can be used as a power source for an information collection system or a monitoring system that transmits information obtained by a sensor. Furthermore, it can also be applied as a power source for use in aquaculture farms or as a power source for luminous signs mounted on buoys, lighthouses, and the like.

  It can also be applied as an emergency power source for camp activities and environments and conditions where it is difficult to obtain power during power outages.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

For example, although the example using the vibration power generator 1 using the electret dielectric 3 as the power generator has been described in the above-described laminated power generator, the present invention is not limited to this. For example, as long as power is generated by receiving external force, a piezoelectric element or the like can be used as the power generator instead of the vibration power generator 1 described above. Common piezoelectric elements include, for example, barium titanate, zirconia (ZrO ₂ ), lead zirconate titanate (PZT), lanthanum doped lead zirconate titanate (PLZT), strontium titanate, lead titanate, titanate Piezoelectric ceramics such as bismuth and bismuth titanate, piezoelectric single crystals such as lithium niobate (LiNbO ₃ ), lithium tantalate (LiTaO ₃ ), and quartz, and polymers represented by polyvinylidene fluoride (PVDF) A piezoelectric film or a piezoelectric sheet of the system can be applied as the power generator.

  Moreover, although each laminated power generator shown in each of the above-described embodiments has a plurality of vibration power generators stacked and accommodated in the container 15, the present invention is not limited to this. For example, as shown in FIG. 11A, the laminated power generation apparatus 12 can be configured by alternately folding and laminating one vibration power generation body 1 and housing the vibration power generation bodies 1 in a container 15. In the laminated power generation device 12, a support member 2 is partially provided between the folded vibration power generation bodies 1 of each layer, and the support member 2 and the vibration power generation body 1 of each layer are joined. In addition, the medium 16 is filled in the space inside the container 15 and between the vibration power generators 1 of each layer.

  Moreover, like the laminated power generation device 12a shown in FIG. 11B, the vibration power generation body 1 is laminated by winding a single vibration power generation body 1 around the core material 14 around the core material 14, and this is put in the container 15. The laminated power generation apparatus 12a can be configured by housing. Also in this case, a space can be formed between the layers of the vibration power generator 1 by partially interposing the support member 2 between the layers of the vibration power generator 1 that are wound around and laminated. Therefore, the medium 16 can be filled in the space inside the container 15 and between the vibration power generators 1 of each layer. FIG. 11B shows an embodiment using the core material 14, but the core material 14 may not be used, and the air core may be filled with the medium 16. Thus, the same effects as those of the other laminated power generators described above can be obtained by the laminated power generators 12 and 12a in which one vibration power generator 1 is laminated in a plurality of layers. Note that the number of stacked power generation devices 12 and 12a (the number of folding times and the number of winding times) is not limited to the illustrated example, and can be appropriately designed.

DESCRIPTION OF SYMBOLS 1, 1a, 1b ......... Vibration power generation body 2 ......... Support member 3, 3a ......... Electret dielectric 4 ......... Hole 5a, 5b ......... Electrode 6 ......... Conductive layer 7 ......... Join Part 8 ............ Resin layer 9 ............ Non-joined parts 10, 10 a, 10 b ............ Laminated power generator 11 ............ Contact parts 12, 12 a ............ Laminated power generator 13 ............ Seal member 13 a ............ Seal part 14 ......... Core 15 ......... Container 15a ......... Tire 16 ......... Medium 17 ......... Rectifier circuit 18 ......... Wheels 19, 19a, 19b ......... Power storage circuits 20, 20a, 20b, 20c ......... Power generation system 21 ......... DC voltage converter 23 ......... Moving part 25 ......... Cylinder 27 ......... Seal member 29 ......... Diaphragm

Claims (6)

A vibration generator member which have a pair of electrodes disposed so as to sandwich said electret dielectric electret dielectric holding a charge,
A support member disposed between the vibration power generators of a plurality of layers;
A container for accommodating the multiple layers of the vibration power generator;
Comprising
The electret dielectric and the electrode are both flexible, and a joint portion is partially provided between the electret dielectric and at least one of the electrodes, and at least a part of the joint The electret dielectric and the electrode are joined via a portion, and portions other than the joined portion become non-joined portions that are not joined to each other, and at least a part of the non-joined portion, the electret dielectric and the electrode possible to change the distance in the thickness direction of the der it is,
The support member is disposed with an interval between the vibration power generators,
A space is formed in a portion where the support member between the vibration power generators is not disposed,
The space between the container and the vibration power generator is filled with a medium,
The pressure changes of the medium in the container, the laminated power generator and said electret dielectric and the electrode is characterized that you repeating the peeling contact. The said support member is arrange | positioned between the said vibration electric power generation body of each layer so that it may become a substantially identical position in the plane of the said vibration electric power generation body of each layer laminated | stacked. Stacked power generator. The laminated power generator according to claim 2, wherein the vibration power generator is provided with a seal portion that prevents a medium in the container from entering between the electrode and the electret dielectric. The container has a movable part that transmits a force from the outside to the medium in the container,
The laminated power generator according to any one of claims 1 to 3, wherein the pressure of the medium in the container changes according to the movement of the movable part. The container is a tire and wheel assembly,
The vibration power generator stacked via the support member is installed inside the tire / wheel assembly,
The said vibration electric power generation body is generated with the pressure change of the medium inside the said tire and wheel assembly resulting from rotation of the said tire and wheel assembly, The Claim 1 characterized by the above-mentioned. Stacked power generator. The vibration power generator is curved and laminated along the outer circumferential direction of the tire / wheel,
The laminated power generator according to claim 5, wherein the support members are arranged at predetermined intervals along an outer circumferential direction of the tire / wheel.

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