JP6133051B2 - Laminated power generator, power generation method of laminated power generator - Google Patents

Description

  The present invention relates to a stacked power generation body in which power generation bodies are stacked and a power generation method using the same.

  Conventionally, vibrations of structures such as roads, bridges, buildings, and industrial machines, vibrations of moving bodies such as automobiles, railway vehicles, and aircraft, vibrations caused by human movements, and environmental vibrations that exist universally in the environment, etc. Attempts have been made to convert the energy 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, etc. using a conventional piezoelectric element or power generation device, a complicated mechanism for sufficiently deforming the power generation body is required. Therefore, not only the cost increases, but also the restrictions on the installation location. Furthermore, it may be a factor of a decrease in reliability due to an increase in the probability of occurrence of deterioration or breakage of the mechanism portion.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a laminated power generator with high power generation efficiency and high reliability and a power generation method using the laminated power generator with a simple structure. .

In order to achieve the above-described object, the first invention provides a vibration power generation body 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 generation A support member disposed between the body, the electret dielectric and the electrode both have flexibility, and between the electret dielectric and at least one of the electrodes, A joint is partially provided, and the electret dielectric and the electrode are joined via the joint, and a portion other than the joint becomes a non-joint that is not joined to each other, at least of the non-joint In some cases, a distance in the thickness direction between the electret dielectric and the electrode can be changed, and the support member is spaced from the vibration power generator. A space is formed in a portion where the support member between the vibration power generators is not disposed, and the support member is disposed so that a fluid can flow in the space. In the laminated power generator , the electret dielectric and the electrode repeat contact and peeling by flowing a fluid .

In this power generation body, a non-junction portion is formed between the electret dielectric that holds the electric charge and the electrode. Therefore, by applying an external force or vibration to the power generation body, the distance between the electret dielectric and the electrode is increased. It can be easily changed. Therefore, electric charge is electrostatically induced in the electrode in accordance with a change in the distance between the electret dielectric and the electrode, and power generation can be performed. Therefore, when this power generation body is used for the laminated power generation body of the present invention, power generation can be performed efficiently. Further, by flowing a fluid through the space between the power generation bodies of each layer to be stacked, an external force or vibration can be applied to the surface of the power generation body of each layer by the flow of the fluid. For this reason, the electric power generation body of each layer can be generated efficiently.

The support member is preferably disposed substantially between the vibration generator of the respective layers to have the same position relative to the plane position of the vibration generators to be laminated.

  As described above, when the support members are arranged at substantially the same plane position between the power generation bodies of the respective layers, the support members of the respective layers are substantially aligned in the stacking direction of the stacked power generation bodies. Can be prevented. Therefore, a gap (space) between the power generators of each layer can be reliably ensured.

  The external force is not limited to a force that mechanically contacts another substance with the power generation body and deforms the power generation body. For example, it refers to the action of force from the outside to the power generation body that can be repeatedly applied to the power generation body, such as vibration of the structure to which the laminated power generation body is attached, sound waves and air pressure changes from the outside, and the like. Is. This external force may be minute. Further, the vibration is not limited to the one whose amplitude, frequency, etc. are constant, but refers to the one that can apply external force (including inertial force) to the power generator periodically or irregularly.

Further, wherein the vibration generators, it is desirable that the sealing portion to prevent fluid from entering from the outside of the vibration generating body to the vibration generator body is provided.

  By adopting such a configuration, even when the fluid flows between the power generation bodies in which liquids such as water are stacked as the fluid, it is possible to prevent corrosion and deterioration of the electrodes and the like provided in the power generation body. In addition, when a power generator having a structure in which an electret dielectric is sandwiched between a pair of electrodes as described above, a liquid such as water is applied to a non-joint provided between the electrode and the electret dielectric. Since intrusion can be prevented, it is possible to prevent a decrease in surface potential difference between the front and back surfaces of the electret dielectric due to the ingress of liquid such as water.

According to a second aspect of the present invention, power generation bodies that generate power by receiving force are stacked and disposed between the power generation bodies of each layer to be stacked by disposing a support member between the power generation bodies of each layer to be stacked. A laminated power generator, wherein a space is formed, the support member is arranged so that a fluid can flow in the space between the power generators of each layer to be laminated , and the laminated power generator The shape of the power generation body constituting a substantially circular shape, the shape of the stacked power generation body formed by laminating the substantially circular power generation bodies is substantially cylindrical, and from any side surface of the substantially cylindrical stacked power generation body using the power generating body space can flow a fluid to a said stack power generating body between each other are laminated, by flowing the fluid from the side of the laminated power generating body, and wherein Rukoto to power the generator body It is the electric power generation method of the laminated electric power generation to do.

  By doing so, the fluid can flow in the space between the power generators of each layer inside the stacked power generator regardless of the direction of the fluid flow with respect to the side surface of the stacked power generator. It can be carried out. At this time, a windmill swing mechanism and other rotating mechanisms are not required.

According to a third aspect of the present invention, power generation bodies that generate power by receiving force are stacked and disposed between the power generation bodies of each layer to be stacked by disposing a support member between the power generation bodies of each layer to be stacked. A laminated power generator, wherein a space is formed, the support member is arranged so that a fluid can flow in the space between the power generators of each layer to be laminated , and the laminated power generator The stack is formed so that the power generating bodies can be freely deformed without providing the support member at a part of the end of the layer, and the end of the part is on the downstream side of the fluid flow. A power generation method for a laminated power generator, wherein the power generator is caused to generate power by flowing a fluid to the power generator.

  By doing in this way, the deformation amount of the power generation body of each layer of the laminated power generation body located on the downstream side of the fluid can be increased. Therefore, a larger power generation output can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, a structure can be simplified and the electric power generation method using the laminated electric power generation body using the laminated electric power generation body with high electric power generation efficiency and high reliability can be provided.

(A) is a figure which shows the lamination | stacking electric power generation body 10 of a steady state, (b) is a figure which shows the state which the fluid flowed into the space between the vibration electric power generation bodies 1 in the lamination | stacking electric power generation body 10, (c) is a lamination | stacking. The figure which shows the state which the fluid flowed into the space between the vibration electric power generation bodies 1 in the electric power generation body 10a. (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 electric power generation body 10b. It is a figure which shows the lamination | stacking electric power generation body 10c, (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 electric power generation body 12, (b) is a figure which shows the laminated electric power generation body 12a.

<Embodiment 1 of laminated power generator>
Hereinafter, the laminated power generator according to the embodiment of the present invention will be described. As shown in FIG. 1 (a), the laminated power generator 10 is configured by using a sheet-like vibration power generator 1 shown in FIG. 2 (a) as a power generator, and a plurality of vibration power generators 1 are stacked.
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.

  A support member 2 is provided between the laminated vibration power generation bodies 1, and the vibration power generation bodies 1 are joined to each other via the support member 2. As a method for joining the vibration power generator 1 and the support member 2, adhesive joining, adhesive joining, adsorption joining, or the like can be used, but there is no particular limitation. 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 2 is not interposed. The support member 2 is arranged so that a fluid can flow in the plane direction of the vibration power generation body 1 through a space formed between the vibration power generation bodies 1 of the stacked layers. Moreover, it is preferable that the supporting member 2 is provided in the substantially same position in the plane of each vibration power generation body 1 laminated | stacked. That is, it is preferable that the support member 2 is substantially aligned in the stacking direction in plan view. 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 body 10, the support member 2 is preferably an elastic body typified by rubber. 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 a voltage is applied to both surfaces of the porous material in which fine pores 4 are present, 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 gap length between the electrodes 5a and 5b and the electret dielectric 3, 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. By doing in this way, it can prevent that the medium 16 which is a fluid penetrate | invades in the clearance gap (air gap) provided between the electrode 5b and the electret dielectric material 3. FIG. Further, when the fluid 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 method of joining the protruding upper and lower resin layers 8 is not particularly limited as long as it can prevent the infiltration of the fluid medium 16. For example, the joining method using an adhesive or the joining by heat fusion The method can be adopted. 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. Similarly, when returning from the state of FIG. 5B to the state of FIG. 5A, the change in the distance between the electrode 5b and the electret dielectric 3 (change in the direction in which the gap length B increases) is similarly performed. 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. 1A, in the laminated power generation body 10, a plurality of vibration power generation bodies 1 are joined and stacked through support members 2. When such a laminated power generator 10 is arranged in the flow of the medium 16 that is a fluid (arrow E in the figure), as shown in FIG. 1B, the space (gap) between the laminated vibration power generators 1 is stacked. The fluid (medium 16) flows substantially parallel to the plane direction of each vibration power generator 1 (arrow F in the figure). When the fluid (medium 16) flows in the space between the vibration power generators 1 of each layer in this way, a vortex (Kalman vortex) is generated in the flow of the fluid (medium 16). Force can be applied to the surface of the vibration power generator 1 of each layer by this vortex. Therefore, the vibration power generator 1 is caused to undergo repeated bending deformation with the support member 2 as a fulcrum by the action of the force in the thickness direction of the vibration power generator 1 due to the eddy current (G in the figure). ), The contact and peeling between the electrode 5b and the electret dielectric 3 in the non-bonding portion 9 (air gap) of the vibration power generator 1 can be repeated (the air gap length is repeatedly changed) (see FIG. 5). Therefore, the laminated power generator 10 can generate power efficiently. The laminated power generator 10 not only generates power due to the generation of eddy currents due to the flow of the fluid (medium 16), but also directly generates the vibration power by the fluid (medium 16) flowing directly against the vibration power generator 1. It is also possible to generate power by applying a force in the thickness direction of the body 1.

  At this time, by appropriately setting the thickness (interval between the stacked vibration power generators 1), the shape, the arrangement, and the like of the support member 2, it is possible to control the generation of vortex due to the flow of the fluid (medium 16). it can. Moreover, you may arrange | position the eddy current generation member for generating an eddy current effectively between the laminated | stacked vibration electric power generation bodies 1, the outer peripheral part of the laminated electric power generation body 10, or its vicinity. Thus, by controlling the generation of vortex flow with respect to the flow of the fluid (medium 16), the vibration power generator 1 can be effectively vibrated and deformed. Therefore, the power generation efficiency of the laminated power generator 10 can be improved.

  Further, like the laminated power generator 10a shown in FIG. 1C, the support member 2 located on the downstream side of the flow of the fluid (medium 16) may be eliminated. That is, the vibration power generator 1 of each layer may be a free end on the end side of the laminated power generator 10a located on the downstream side of the flow of the fluid (medium 16). If it does in this way, the edge part of the vibration electric power generation body 1 of each layer can be greatly deform | transformed like a windsock or a flag with the flow (arrow F in the figure) of the fluid (medium 16). Therefore, the length of the air gap between the electrode 5b and the electret dielectric 3 in the vibration power generator 1 changes (see FIG. 5), and a larger power generation output can be obtained.

  The fluid (medium 16) is not particularly limited, and may be a gas or a liquid. For example, the laminated power generator 10 may be disposed in the atmosphere and power may be generated using a flow of wind (air), or may be disposed in water to generate power using the flow of water.

  More specifically, the laminated power generator 10 is installed in a windy place (for example, installed outdoors, in an air conditioning duct, in an exhaust duct, in a tunnel, or installed in a bicycle, motorcycle, automobile, railway vehicle, etc.) ) Or where there is water flow (for example, installation in a location with ocean currents, installation in rivers, lakes, industrial water, agricultural water, sewage, tap water, drainage, etc.) Can do. Thus, the laminated power generator 10 can generate power using natural energy such as wind power, hydraulic power, wave power, and tidal power. Moreover, the laminated power generator 10 can also generate power due to factors other than the flow of the fluid (medium 16). For example, when the place where the laminated power generator 10 is installed vibrates, power can also be generated by transmitting the vibration to each of the laminated vibratory power generators 1 via the support member 2 and the fluid (medium 16). In addition, when a pressure change of the fluid (medium 16) filled between the vibration power generation bodies 1 of the stacked layers occurs, the pressure change of the fluid (medium 16) is transmitted to the surface of the vibration power generation body 1 of each layer. Can also generate electricity.

  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 was also a concern that power generation may not be 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 shown in FIG. 2B, the direction of change in the distance between the electrodes 5a, 5b and the electret dielectric 3 (decreasing direction or increasing direction). It is desirable to make the timing (phase) coincide with 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.

  On the other hand, in the vibration power generator 1 of FIG. 2A, power is generated only by a change in the distance between the electrode 5b and the electret dielectric 3, so that the electrode 5a, There is no need to match the direction and timing (phase) of the distance change between each of 5b 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 the use 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.

  As described above, the laminated power generator 10 is configured by laminating a plurality of vibration power generators 1 via the support member 2. Therefore, a gap is formed between the vibration power generation bodies 1, and a fluid (medium 16) can flow between the vibration power generation bodies 1 of each layer, and force in the thickness direction is applied to all the vibration power generation bodies 1 that are stacked. Can be granted. As a result, it is possible to cause a change in the distance (air gap length) between the electrode 5b and the electret dielectric 3 in all the stacked vibration power generators 1, and accordingly, all the vibration power generators 1 generate power. Therefore, a high power generation output can be obtained from the laminated power generation body 10.

Further, when vibration is applied to the laminated power generation body 10, the vibration is transmitted to the vibration power generation body 1 of each layer laminated via the support member 2 and the fluid (medium 16). Therefore, each vibration power generation body 1 vibrates, and the portions of the vibration power generation body 1 other than the vibration power generation body 1 joined to the support member 2 with the support member 2 as a fulcrum are bent and deformed, and electric power is generated by this deformation. . That is, when the vibration power generation body 1 is bent at a portion of the vibration power generation body 1 other than the joint with the support member 2, a distance change (change in air gap length) between the electrode 5b and the electret dielectric 3 occurs. Power generation is performed.
As described above, the laminated power generation unit 10 can obtain a power generation output by an external force applied from the fluid (medium 16) between the vibration power generation units 1 or vibration of the laminated power generation unit 10 itself.

<Embodiment 2 of laminated power generator>
Next, another embodiment will be described. In the following description, the same reference numerals as those in FIG. 1 and the like are given to the configuration having the same function as that of the laminated power generator 10, and the duplicate description is omitted.

  A laminated power generator 10b shown in FIG. 6 is formed by laminating a plurality of substantially circular vibration power generators 1 with support members 2 interposed therebetween. That is, the shape of the laminated power generator 10b is a substantially cylindrical shape. The laminated power generator 10b is accommodated in a casing 15a having a substantially cylindrical shape. The support members 2 are arranged at substantially equal intervals in the circumferential direction in the vicinity of the edge of each vibration power generator 1, and a space is formed between the vibration power generators 1 of each layer where the support member 2 is not interposed. Further, the support member 2 is disposed so as to substantially coincide with the planar position of each vibration power generator 1. That is, the support members 2 of the respective layers are substantially aligned in the stacking direction of the stacked power generation body 10b. With such an arrangement of the support member 2, a fluid (in approximately parallel to the plane direction of the vibration power generation body 1, in the space between the vibration power generation bodies 1 of each layer from any side surface of the laminated power generation body 10 b ( It is possible to flow the medium 16). Moreover, it is possible to prevent the vibration power generator 1 of each layer from being bent by the weight of the support member 2. The arrangement of the support member 2 is not limited to being arranged only in the vicinity of the edge of each vibration power generator 1 as described above, and may be arranged on the center side of each vibration power generator 1. Good. In that case, the support members 2 are arranged at substantially equal intervals with respect to the circumferential direction of the circumference having the radius from the center of the substantially circular vibration power generator 1 to the position where the support member 2 is arranged. It is preferable.

  For example, lattice holes (not shown) are provided on the entire circumference of the side surface of the housing 15a. Therefore, when the fluid (medium 16) flows into the side surface of the casing 15a from one of the outer sides thereof, the fluid (medium 16) passes through the lattice holes provided on the side surface of the casing 15a, and the casing It flows into the inside of 15a (arrow H in the figure). Similarly, the fluid (medium 16) that has flowed into the housing 15a flows out of the housing 15a through the lattice holes provided on the side surface of the other housing 15a (arrow H in the figure). When using wind power, the fluid (medium 16) is air, and when using hydropower, the fluid (medium 16) is a liquid containing water as a main component, and when using wave power or tidal current. The fluid (medium 16) is seawater.

  Since the casing 15a has a cylindrical shape, the flow of the fluid (medium 16) is not limited regardless of the flow direction of the fluid (medium 16) as long as the flow is perpendicular to the side surface of the casing 15a. The casing 15a can be passed through. As described above, as long as the flow is perpendicular to the side surface of the laminated power generation body 10b, the flow of the fluid (medium 16) is not limited regardless of the flow direction of the fluid (medium 16). The space between the vibration power generation bodies 1 can be passed substantially parallel to the plane direction of the vibration power generation body 1. At this time, a vortex (Kalman vortex) is generated between the vibration power generators 1 due to the flow of the fluid (medium 16), and the vibration power generators 1 of the respective layers can be vibrated and deformed by this vortex. Accordingly, the vibration power generator 1 of each layer can be efficiently generated. Further, by adopting the configuration as in the present embodiment, even if the flow direction of the fluid (medium 16) changes, it is installed inside the casing 15a without using a windmill rotating mechanism or the like. In addition, power can be generated by flowing a fluid (medium 16) into the side surface of the substantially cylindrical laminated power generation body 10b. Therefore, it is possible to realize a laminated power generation body with a simple structure and high reliability and power generation efficiency without providing a complicated mechanical mechanism.

  Even when vibration is applied to the casing 15a, the vibration is transmitted to the vibration power generator 1 of each layer in the laminated power generator 10b via the casing 15a, the support member 2, and the fluid (medium 16). Therefore, power is generated by the vibration power generator 1 of each layer receiving vibration and deformation.

  As described above, the power generation output can be obtained by the stacked power generation body 10 b as well as the stacked power generation body 10. In particular, the laminated power generation unit 10b efficiently flows the flow of the fluid (medium 16) to the flow of the fluid (medium 16) from any direction toward the side surface between the vibration power generation units 1 of each layer. Therefore, power generation output can be efficiently obtained by the vibration and deformation of the vibration power generator 1 of each layer.

<Embodiment 3 of laminated power generator>
7 is attached to a wheel 18 that is a rotating body. That is, the laminated power generation unit 10 c configured by the plurality of vibration power generation units 1 is installed in a casing configured by the tire 15 b and the wheel 18. The inside of the casing constituted by the tire 15b and the wheel 18 is filled with a medium 16 that is a fluid. The tire 15b may be an automobile tire as illustrated, or a bicycle or motorcycle tire.

  The laminated power generator 10 c is disposed on the outer peripheral surface of the wheel 18, and the vibration power generator 1 and the support member 2 are laminated along the outer peripheral direction of the wheel 18. 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 interposing the support member 2 between the vibration power generators 1 stacked, and the space is filled with a medium 16 that is a fluid. 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 wheel 18. Here, the arrangement of the support members 2 is not limited to the arrangement shown in FIG. 7, and may be any arrangement that can cause the flow of the medium 16 that is a fluid in the space formed between the vibration power generators 1. The medium 16 that is a fluid is generally air, but may be nitrogen gas. Further, in the laminated power generator 10c shown in FIG. 7, the laminated power generator 10c is configured by laminating a plurality of vibration power generators 1. However, the laminated power generator 10c of the present invention uses a plurality of vibration power generators 1. However, the present invention is not limited to the configuration of stacking. For example, a single strip-shaped vibration power generator 1 is wound around the outer periphery of the wheel 18 in a roll shape and stacked, and a support member 2 is interposed between the layers of the stacked vibration power generator 1 to generate vibration power. It is also possible to form a space between the layers of the body 1 and fill the medium 16 in the space. Thus, even in the space formed between the layers of the vibration power generator 1, a flow of the medium 16 that is a fluid can be formed.

  When the wheel 18 is rotated (arrow J in the figure), the rotation direction of the tire 15b and the wheel 18 is relatively opposite to the rotation direction of the tire 15b and the wheel 18 in the casing constituted by the tire 15b and the wheel 18. A flow (airflow) of the medium 16 is generated. In particular, when the rotation speed of the wheel 18 changes, a large flow (airflow) of the medium 16 is likely to occur. Accordingly, the medium 16 flows in the space between the stacked vibration power generators 1. Due to the flow of the medium 16, a vortex (Kalman vortex) is generated between the vibration power generators 1, and a force can be applied to the surface of the vibration power generator 1 in each layer by the vortex. Therefore, the vibration power generator is caused by repeated bending deformation of the vibration power generator 1 with the support member 2 as a fulcrum by the action of the force in the thickness direction of the vibration power generator 1 by the vortex or by the action of the force by the vortex. It is possible to generate power efficiently by repeating contact and peeling between the electrode 5b and the electret dielectric 3 at one non-joint portion 9 (air gap) (by repeatedly changing the air gap length). At this time, the thickness of the support member 2 (interval between the vibration power generators 1), the shape, the arrangement, and the like are appropriately set, and the generation of the vortex flow by the medium 16 is controlled, so that the vibration power generator 1 can be effectively used. It is possible to improve the power generation efficiency by vibrating and deforming.

  Further, when the wheel 18 and the tire 15b rotate (arrow J in the figure), the tire 15b undergoes a large deformation at a portion that contacts the road surface. Therefore, the pressure of the medium 16 in the casing (sealed casing) composed of the tire 15b and the wheel 18 varies. Therefore, the force (pressure) applied to each vibration power generator 1 is also changed by the pressure fluctuation of the medium 16, and power can be generated.

Further, during the traveling of the automobile, vibrations accompanying rotation of the tires 15b and the wheels 18 and vibrations according to road surface conditions are generated. Therefore, the vibration accompanying the rotation of the casing itself composed of the tire 15b and the wheel 18 while the automobile is running is transmitted to the vibration power generator 1 of each layer stacked via the support member 2 and the like. Can also generate electricity. 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.
In this embodiment, the tire 15b is attached to the wheel 18. However, even if the laminated power generator 10c is exposed to the outside without providing the tire 15b, between the vibration power generators 1 of the laminated power generator 10c. A flow of the medium 16 is formed in the space, and power generation can be performed.

<Embodiment 1 of power generation system>
Next, the configuration of a power generation system using the above-described laminated power generator 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 receiving external force 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, and a switch. 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 laminated power generation body 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 shown in FIG. 9, the rectifier circuit 17 is connected to each of the plurality of vibration power generation bodies 1 constituting the laminated power generation body 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 generation body 1 substantially match the external force applied to the laminated power generation body 10, each vibration power generation is performed as in the power generation system 20. The electrodes of the body 1 can be connected in parallel with the same polarity of the power generation output. However, if the circuit is configured like the power generation system 20 when the polarity and phase of the power generation output of each vibration power generation body 1 do not match the external force applied to the laminated power generation body 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 laminated power generator 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 laminated power generator 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 generator of the present invention>
The laminated power generator of the present invention obtains wind by moving (running or exercising), for example, in places where outdoor strong winds can be obtained, in air conditioning ducts, exhaust ducts, tunnels, etc. The laminated power generator of the present invention is applied to a place where a wind such as a movable body such as a bicycle, a motorcycle, an automobile, and a railway vehicle and other motions, a moving object, a power pole, a traffic light, a road sign, a guardrail, etc. can be obtained. Can do. By installing the laminated power generator of the present invention in a place where such wind (air flow) is obtained, as described in the above-described embodiment, between the power generators of each of the stacked layers constituting the laminated power generator Electric power can be generated by flowing air (between the vibration power generation bodies 1) (passing wind). The sensor for detecting and measuring the surrounding state can be driven by the electric power from the laminated power generator 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. The laminated power generator of the present invention can also be used as a sensor using the power generation obtained above as an electrical signal. For example, it can be used as a sensor for measuring air volume, wind direction, wind speed, and the like.

  In addition, for example, the laminated power generator of the present invention can be installed in a place where there is a water flow such as a river, industrial water, agricultural water, sewage, tap water, a drain pipe, a distribution pipe, or the like. By installing the laminated power generator of the present invention in a place where such a water flow is obtained, as described in the above-described embodiment, between the power generators of each of the stacked layers constituting the laminated power generator (vibration power generator 1 Electricity can be generated by flowing water between them. 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. The laminated power generator of the present invention can also be used as a sensor using the power generation obtained above as an electrical signal. For example, it can be used as a sensor for measuring water volume, water flow rate, water level, and the like.

  Further, for example, the laminated power generator of the present invention can be applied to a place receiving wave power such as a breakwater, a coast, a quay, a buoy, and a ship, or to a seabed or underwater where the tidal power or ocean current (tide) is large. . By installing the laminated power generator of the present invention in a place where such wave power or ocean current (seawater flow) is obtained, as described in the above embodiment, each of the stacked layers constituting the laminated power generator Power generation can be performed by flowing seawater between the power generation bodies (between the vibration power generation bodies 1). Drives sensors that sense and measure seawater temperature, current flow velocity and direction, wave height, sea and coastal temperature, humidity, brightness, wind speed, and other weather information using the power from the laminated power generator. 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. The laminated power generator of the present invention can also be used as a sensor using the power generation obtained above as an electrical signal. For example, it can be used as a sensor for measuring the current velocity, tide level, wave height, 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 generation body 1 using the electret dielectric 3 as the power generation body has been described as the above-described laminated power generation body, 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.

  For example, each laminated power generator shown in each embodiment described above is a laminate of a plurality of vibration power generators, but the present invention is not limited to this. For example, as shown in FIG. 11A, the laminated power generator 12 can be configured by alternately folding a single strip-shaped vibration power generator 1. The laminated power generation unit 12 is provided with a support member 2 between the folded vibration power generation units 1 of each layer, and the support member 2 and the vibration power generation unit 1 of each layer are joined. 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 at a portion where the support member 2 is not disposed. In this case, the medium 16 (fluid) can flow in the space between the stacked vibration power generation bodies 1 with respect to the width direction of the strip-shaped vibration power generation body 1 constituting the stacked power generation body 12. That is, in the example of FIG. 11A, the medium 16 (fluid) can be flowed in a direction orthogonal to the paper surface, and the stacked power generator 12 can generate power.

  Moreover, you may laminate | stack the vibration electric power generation body 1 by winding the strip | belt-shaped vibration electric power generation body 1 around the core material 14 two or more times like the lamination | stacking electric power generation body 12a shown in FIG.11 (b). 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. Also in this case, the medium 16 (fluid) can be allowed to flow in the space between the stacked vibration power generation bodies 1 with respect to the width direction of the strip-shaped vibration power generation body 1 constituting the stacked power generation body 12a. That is, in the example of FIG. 11B, the medium 16 (fluid) can be flowed in a direction orthogonal to the paper surface, and the stacked power generator 12a can generate power. FIG. 11B shows an embodiment using the core material 14, but the core material 14 may not be used, and an air core may be used, and the medium 16 (fluid) may also flow through the air core portion. As described above, 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 generators 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 part 10, 10 a, 10 b, 10 c ...... Laminated power generator 11 ...... Contact part 12, 12 a ...... Laminated power generator 13 ...... Seal member 13 a. ...... Sealing part 14 ...... Core material 15 a ...... Housing 15 b ...... Tire 16 ...... Medium 17 ...... Rectifier circuit 18 ...... Wheels 19, 19 a, 19 b ...... Power storage circuits 20, 20 a , 20b, 20c ......... Power generation system 21 ......... DC voltage converter

Claims (5)

A vibration generator member which have a pair of electrodes disposed so as to sandwich the electret dielectric electret dielectric holding a charge,
A support member disposed between the vibration power generators of a plurality of layers;
Comprising
The electret dielectric and the electrode are both flexible, and a joint is partially provided between the electret dielectric and at least one of the electrodes. The electret dielectric and the electrode are joined, and the portion other than the joined portion becomes a non-joined portion that is not joined to each other, and the thickness direction between the electret dielectric and the electrode is at least part of the non-joined portion. can der varying the distance 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 support member is arranged to allow fluid to flow through the space;
The laminated power generator , wherein the electret dielectric and the electrode repeat contact and peeling by flowing a fluid through the space . 2. The laminated structure according to claim 1, wherein the support member is disposed between the vibration power generators of each layer so as to be substantially in the same position with respect to a planar position of the vibration power generator of each layer to be laminated. Power generator. Wherein the vibration generators, stacked according to claim 1 or claim 2, characterized in that sealing portions to prevent fluid from entering from the outside of the vibration generating body to the vibration generator body is provided Power generator. The power generators that generate power by receiving force are arranged in layers,
By arranging a support member between the power generators of each layer to be laminated,
Using a stacked power generator characterized in that a space is formed between the power generators of each layer to be stacked,
The support member is arranged so that a fluid can flow in the space between the power generators of each layer to be laminated,
The power generator has a substantially circular shape,
The shape of the laminated power generator formed by laminating the power generator is substantially cylindrical,
Using the laminated power generator capable of flowing a fluid in the space between the power generators laminated from any side of the laminated power generator,
A power generation method for a stacked power generator, wherein a fluid is caused to flow through a space between the power generators of each layer stacked from a side surface of the stacked power generator to generate power. The power generators that generate power by receiving force are arranged in layers,
By arranging a support member between the power generators of each layer to be laminated,
Using a stacked power generator characterized in that a space is formed between the power generators of each layer to be stacked,
The support member is arranged so that a fluid can flow in the space between the power generators of each layer to be laminated,
The end portions of the stacked power generation bodies are not provided with the support member, and the power generation bodies can be freely deformed,
A stacked power generator, wherein the power generator is caused to generate power by flowing a fluid through the stacked power generator such that the end of the part of the stacked power generator is located downstream of a fluid flow. Power generation method.

Images