WO2000021146A1 - Dispositif pour la production d'energie electrique - Google Patents

Dispositif pour la production d'energie electrique Download PDF

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Publication number
WO2000021146A1
WO2000021146A1 PCT/EP1999/006517 EP9906517W WO0021146A1 WO 2000021146 A1 WO2000021146 A1 WO 2000021146A1 EP 9906517 W EP9906517 W EP 9906517W WO 0021146 A1 WO0021146 A1 WO 0021146A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
striking
striking element
piezoelectric transducer
piezoelectric
Prior art date
Application number
PCT/EP1999/006517
Other languages
German (de)
English (en)
Inventor
Lothar Sanner
Peter Heller
Original Assignee
Lothar Sanner
Peter Heller
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lothar Sanner, Peter Heller filed Critical Lothar Sanner
Priority to AU57453/99A priority Critical patent/AU5745399A/en
Priority to EP99944602A priority patent/EP1129494A1/fr
Publication of WO2000021146A1 publication Critical patent/WO2000021146A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/183—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using impacting bodies

Definitions

  • the present invention relates to a device for generating electrical energy with the features of the preamble of claim 1.
  • the object of the present invention is therefore to provide a device by means of which a person can generate energy which is available for operating an electronic device or for recharging one or more accumulators.
  • the device according to the invention is advantageously small in size and light in weight. It can either be operated manually by someone or in some other way.
  • the device according to the invention uses the piezoelectric effect, in which mechanical energy is converted into electrical energy by means of piezo elements.
  • the device advantageously has not only one, but a multiplicity of piezoelectric elements, in particular crystals, which are advantageously subjected to multiple pressure loads by means of pressure-exerting elements, so that an electrical voltage can be picked up from them by the mechanical deformation of the piezo elements, which for operating electronic devices or for charging electrical memories, such as. B. accumulators can be used.
  • the voltage tapped at the piezo elements is worked up by means of a suitable electrical circuit well known from the prior art and regulated into a working voltage which is suitable for the electronic device or for the accumulator.
  • At least one impact element can be moved by means of an actuating element, which pressurizes the at least one piezoelectric element.
  • the person must permanently operate the device according to the invention while using the electronic device or when charging the accumulator.
  • the person operating the device according to the invention can charge a mechanical energy store by means of an actuating element.
  • a mechanical energy storage can e.g. B. be a spring which can be brought into a bias by the person.
  • the prestressed spring energy can be used to drive the striking elements which pressurize the piezo elements in such a way that a voltage can be tapped at the piezo elements, which can then be used to operate or charge the device or accumulator connected to the device according to the invention.
  • the device according to the invention itself has an accumulator, which is integrated in the device according to the invention and whose stored electrical energy can be used to operate an electronic device or to charge an external accumulator. This ensures ensures that, if necessary, the device according to the invention provides enough electrical energy to carry out the desired action.
  • energy can be generated and stored at the same time by means of the device at times when the device itself does not have to deliver any energy.
  • the device according to the invention can have any number of piezoelectric elements.
  • a striking element which pressurizes the element can be assigned to each piezoelectric element.
  • cyclic piezo elements it is possible for cyclic piezo elements to be cyclically pressurized. In order to avoid possible vibrations, it is particularly advantageous to provide more striking elements than piezo elements.
  • charging electronics are provided which control or regulate the charging process and in particular the charging current and the charging voltage.
  • Figure 1 A cross-sectional view through a first piezoelectric mechanism
  • FIG. 2a and 2b a side and top view of a further mechanism for the device according to the invention
  • FIG. 3 shows a cross-sectional view through a device according to the invention, which uses a mechanism according to FIG. 1;
  • FIG. 4 a top, side and front view of a tensioning mechanism for tensioning tension springs, the stored energy of which is used to drive a hammer mechanism according to FIGS. 2a and 2b;
  • FIG. 5 assembly of the hammer mechanism with the actuating device according to FIG. 4;
  • Figure 6 electronic circuit for processing an operating voltage.
  • FIG. 1 shows a cross-sectional view through a first embodiment of the device according to the invention, in which four piezoelectric transducers 3a to 3d are arranged in an outer housing part 1.
  • An inner part 2 rotating about an axis A has a plurality of cutouts 2a, in which striking parts 4 movably mounted in the radial direction are arranged.
  • the outer contours of the striking elements 4 are adapted to the cutouts 2a of the inner part 2 in such a way that the parts 4 can only be moved in the radial direction.
  • the striking elements 4 are pressurized radially outwards by spring elements 5, which are also arranged in the cutouts 2a.
  • the striking elements 4 are pressed radially outwards by the spring elements 5 against the guide surface 1 a of the outer part 1.
  • the guide surface la of the outer part 1 is designed such that the Impact elements 4 can be pressed into the recesses 2a by rotating the inner part 2 in the direction of the arrow against the spring force of the spring elements 5 during a four-part rotation.
  • the striking elements 4 run over an edge 1b of the guide surface la of the outer element 1. After passing over the edge 1b, the striking elements 4 can move radially outwards from the spring element 5 which is now tensioned are accelerated and hit the piezoelectric elements 3a to 3c arranged radially outward.
  • each striking element 4 is pressed a total of four times by the guide surfaces la into the respective recess 2a and released by the four edges 1b such that the spring force stored in the spring elements 5 strikes the striking elements 4 radially accelerated to the outside.
  • the piezoelectric elements 3a to 3d are arranged in the outer part 1 in such a way that they are flush with the guide surfaces la or protrude a little above them, so that the striking elements 4 from the surface of the piezoelectric elements 3a to 3d onto the guide surfaces la when turning the inner part 2.
  • the embodiment shown in FIG. 1 can be modified such that more or fewer than four striking elements or piezoelectric elements are provided.
  • the striking elements and the piezoelectric transducers are advantageously arranged around the circumference of the axis A in such a way that as little vibration as possible occurs when the inner part is rotated. To avoid such vibrations such.
  • B. 5 or 7 striking elements are provided around the circumference of the inner part 2, which only pressurize three piezoelectric converters in succession.
  • FIGS. 2a and 2b show a further embodiment of the device according to the invention, in which small hammer-like striking elements 40 periodically deform piezoelectric transducers 30a to 30d with their striking surface 41.
  • the striking elements 40 are designed as rockers, the free end of one arm 44 cooperating with a drive wheel, in particular a cam or gear wheel, which deflects and releases the rocker at least once, in particular several times, when the wheel rotates.
  • FIG. 2a shows the device in the state in which the rockers 40 are not deflected and are just pressurizing the piezoelectric transducer 30a.
  • a spring 50 is tensioned by the transmission 20 when the striking element 40 is deflected.
  • a plurality of striking elements 40 which are designed as a rocker and are mounted on a base plate 10, can be rotatably supported. For this purpose, the striking elements can be rotated between two bearings 43 on the base plate 10. consolidates.
  • the gear, consisting of the cam or gear 20 is also arranged between two bearings 21 on the base plate 10.
  • any number of striking elements designed as rockers can be arranged next to one another on the base plate 10.
  • a more or less strong return spring 50 can also be provided.
  • the return of the striking elements into the starting position, as shown in FIG. 2a is not controlled by a spring, but by a guide link of the transmission 20.
  • a further embodiment of this embodiment is conceivable in such a way that the striking element 40 can be moved back and forth between two stop positions by the transmission 20, the arm of the rocker 40 not interacting with the transmission 20 having two striking surfaces pointing away from one another, each in the maximum Pressurize piezoelectric transducers located in the deflection positions.
  • FIG. 3 shows an embodiment of the device according to the invention, in which an arrangement according to FIG. 1 is arranged in a housing, the arrangement according to FIG. 1 being embedded between two housing shells 8b and 8c.
  • the inner part 2 is connected to a spiral spring 7 by means of a shaft W.
  • the spiral spring 7 can be tensioned via a control element 9 in the form of a rotary knob via a gear.
  • a locking device 11, 12, 13 prevents the coil spring 7 from unintentionally relaxing. If the shaft W is rotated in the direction in which the coil spring 7 is pretensioned, the inner part 2 does not rotate due to an interposed clutch, in particular a ratchet clutch.
  • the spiral spring 7 can relax and lock rotates the shaft in the direction of the arrow in accordance with FIG. 1 and drives the inner part 2 via the ratchet coupling, as a result of which the striking elements 4 periodically pressurize the piezoelectric transducers 3a to 3d in succession.
  • the device can be designed so that the knob 9 is not moved.
  • the knob 9 is rotated to simplify the mechanics.
  • the locking mechanism 11 ensures that the shaft can only be rotated in one direction, ie in the prestressing direction.
  • the device consists of three housing parts 8a, 8b and 8c, wherein the electrical circuit according to FIG. 6 - not shown in FIG. 3 - can also be arranged in the housing of the device.
  • the housing is advantageously of such dimensions that it fits comfortably in the hand of the operator and is particularly shaped on the outside in such a way that the operator of the device can hold it securely when the rotary knob is pressed.
  • FIG. 4 shows a further embodiment of a tensioning device for the device according to the invention, in which two tension springs 68 can be preloaded by means of an operating lever 64.
  • two guide rails 61 are mounted on a base plate 60, between which a rack 62 can slide.
  • the guide rails 61 each carry a bearing block 65, in the bearings of which a shaft with a gear 66 runs, which corresponds to the rack 62. If the gearwheel 66 is now rotated counter to the direction of the arrow by means of the ratchet mechanism via the operating lever 64, the rack is moved to the left against the direction of the arrow.
  • the two tension springs 68 are between the two blocks 63 and 67 curious; excited.
  • the bearing block 67 is firmly connected to the mounting plate 60.
  • the bearing block 63 is firmly connected to the rack 62. If the rack 62 is now moved to the left against the direction of the arrow by means of the operating element 64 via the gear wheel 66, the two tension springs 68 are preloaded. By means of a retention mechanism or locking device, which serves to release the energy of the two tension springs 68, which have been preloaded, a movement of the rack 62 in the direction of the arrow is not possible while the device is being opened.
  • the toothed rack 62 moves in the direction of the arrow due to the prestressed tension springs 68 and also moves the toothed wheel 66 in the direction of the arrow and serves to drive an arrangement according to FIGS. 1 or 2.
  • FIG. 5 shows an example of an assembly of the device according to FIG. 2 and FIG. 4.
  • the mounting plate 10 is fastened to the bearing blocks 65, as a result of which the gearwheel 20 engages with the gearwheel 66.
  • FIG. 6 shows a basic circuit for converting the voltage generated by the piezoelectric elements into electrical energy.
  • Each piezoelectric element K is connected in series to form a diode, so that one-way decoupling is ensured. Any number of this series connection of diodes and piezoelectric elements are connected in parallel to a capacitor C and a Zener diode ZD.
  • the capacitor C serves as an intermediate storage element in which the electrical energy generated by the piezoelectric elements through the pressure is first collected and then passed on via the resistor R to an accumulator V to be charged or to an electrical device or to end users.
  • the circuit is only an example and can be supplemented according to the respective requirements. It is also generally known and can be replaced by correspondingly acting circuits.
  • the device according to the invention is based on the principle that a manual elevator system prestresses a mechanical element, the mechanically stored energy then being converted into electrical energy via piezoelectric elements. Electrical wiring of the piezoelectric elements then serves to harness the electrical voltage generated on the piezoelectric elements.
  • Any manual elevator systems are conceivable.
  • the elevator systems exemplarily shown in the figures can be enlarged or reduced in size as desired and can be adapted to the respective dimensions.
  • the device can also include monitoring circuits which monitor the state of charge of the rechargeable batteries or the other electrical energy stores.

Landscapes

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

Abstract

L'invention concerne un dispositif pour la production d'énergie électrique par effet piézo-électrique. Ce dispositif, qui est en particulier un appareil manuel, comporte au moins un convertisseur piézo-électrique et un circuit électronique prélevant la tension électrique produite par le convertisseur piézo-électrique. Ce dispositif est pourvu d'au moins un moyen d'actionnement (9) qui peut être, en particulier, actionné par la main ou le pied de la personne utilisant le dispositif, ledit moyen d'actionnement (9) pouvant exercer une pression, directement ou par l'intermédiaire d'un élément de transmission, sur le ou les convertisseurs piézo-électriques (3a, 3b, 3c, 3d; 30a, 30b, 30c, 30d).
PCT/EP1999/006517 1998-10-02 1999-09-04 Dispositif pour la production d'energie electrique WO2000021146A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU57453/99A AU5745399A (en) 1998-10-02 1999-09-04 Device for generating electric power
EP99944602A EP1129494A1 (fr) 1998-10-02 1999-09-04 Dispositif pour la production d'energie electrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19845379 1998-10-02
DE19845379.5 1998-10-02

Publications (1)

Publication Number Publication Date
WO2000021146A1 true WO2000021146A1 (fr) 2000-04-13

Family

ID=7883167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/006517 WO2000021146A1 (fr) 1998-10-02 1999-09-04 Dispositif pour la production d'energie electrique

Country Status (4)

Country Link
EP (1) EP1129494A1 (fr)
CN (1) CN1310865A (fr)
AU (1) AU5745399A (fr)
WO (1) WO2000021146A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054398A1 (de) * 2000-11-02 2002-05-08 Peter Heller Netzunabhängiges Energieversorgungssystem
CN114649975A (zh) * 2022-02-23 2022-06-21 集美大学 一种压电发电装置及能量回收装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112865600B (zh) * 2020-12-31 2023-01-17 山西财经大学 一种宽频带三维方向压电振动能量采集阵列结构
CN114050736B (zh) * 2021-11-26 2023-06-16 浙江师范大学 一种流致振-旋转式摩擦发电机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856564A (en) * 1956-01-31 1958-10-14 John W Derwin Barium titanate crystals as a portable source of electric power
US3168660A (en) * 1962-03-14 1965-02-02 Gen Motors Corp Three phase piezoelectric generator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856564A (en) * 1956-01-31 1958-10-14 John W Derwin Barium titanate crystals as a portable source of electric power
US3168660A (en) * 1962-03-14 1965-02-02 Gen Motors Corp Three phase piezoelectric generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054398A1 (de) * 2000-11-02 2002-05-08 Peter Heller Netzunabhängiges Energieversorgungssystem
CN114649975A (zh) * 2022-02-23 2022-06-21 集美大学 一种压电发电装置及能量回收装置

Also Published As

Publication number Publication date
AU5745399A (en) 2000-04-26
EP1129494A1 (fr) 2001-09-05
CN1310865A (zh) 2001-08-29

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