Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
  • H02K35/04—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving coil systems and stationary magnets

Definitions

• the present invention relates to an induction generator and a method for generating an electric current using an induction generator.
• DE 101 12 072 A1 discloses a switching element with an actuating member, which is in operative connection via a lever arrangement with an energy converter of the switching element, that the movement of the actuating member is transferable to the energy converter.
• the energy converter converts at least a portion of the mechanical energy used to actuate the actuator into electrical energy.
• the present invention provides an improved induction generator and method for generating an electric current according to the main claims.
• Advantageous embodiments will become apparent from the dependent claims and the description below.
• the electrical energy is calculated from the following ratios:
• the inventive concept presented herein is based on the recognition that an efficiency of an induction generator can be increased considerably if, for the energy conversion, the coil of the generator is moved instead of the much heavier magnet system.
• the electrical energy of a generator is calculated as follows:
• the efficiency in the electromagnetic energy conversion can be significantly improved by refraining from accelerating a relatively heavy element of the iron circuit, so the magnetic element or magnetic core as fast as possible on a short path and decelerate as quickly as possible at the end of the cycle ,
• An induction generator designed in accordance with embodiments of this invention does not require a gearbox that reduces efficiency and has no complex mechanical structure, but combines all the criteria that make up an optimal electromechanical energy converter, especially for standalone radio systems. These include a small space, a high energy density, high efficiency, a short activation path, a low activation force, low noise, the most constant energy quantity, a function independent of the operating speed, robustness to temperature changes, mechanical robustness and low production costs.
• the approach described meets the increasing demand for self-sufficient radio systems that are capable of implementing complex radio protocols such as KNX-RF, ZigBe, Bluetooth low energy or W-LAN with high transmission power and several repetitions. This is only possible with extremely powerful generators (0.7 to 2 mWs). A simple enlargement of known energy converters is not expedient because the usability of such systems due to the continued increasing operating forces and dimensions and the increased noise is excluded or greatly impeded.
• the induction generator described below can be used for those applications in which a small amount of energy is required for a small size.
• An induction generator comprising at least one permanent magnet for generating a permanent magnetic field, at least one reflux plate for guiding the permanent magnetic field, a coil and a spring element, the permanent magnet and at least a portion of the reflux plate being replaced by one of the permanent magnets.
• Magnetically permeated air gap are separated from each other, and wherein the coil is connected to the spring element and at least a portion of the coil is movably disposed in the air gap, characterized in that the spring element is formed in response to a deflection of the coil an oscillatory movement of at least the To cause portion of the coil in the air gap transverse to a magnetic flux of the permanent magnetic field within the air gap.
• the induction generator or electric generator is a device which is designed to generate electric current or electrical voltage by means of electromagnetic induction.
• Such induction generator for example, in connection with a self-sufficient radio switch, the z. B. is used to turn on and off a lighting device used.
• the at least one permanent magnet or permanent magnet can, for. Example, iron, cobalt, nickel or ferrite or an alloy of a plurality of these metals and be formed to form a static magnetic field, the permanent magnetic field.
• the permanent magnet may be integrally formed and have opposite poles on opposite sides, a south pole and a north pole.
• the permanent magnet may have pole pieces of high permeability material on the opposite sides.
• one pole piece can form the north pole and the other pole piece can form the south pole.
• the magnetic flux generated by the permanent magnet can be guided and distributed in a defined manner.
• the permanent magnet may be multi-piece and z. B. composed of at least two or more permanent magnet elements.
• such two permanent magnet elements may be connected to one another via a common connection plate.
• the two permanent magnet elements may rest on the connecting plate at a distance such that the north pole of one permanent magnet element and the south pole of the other permanent magnet element are mounted on a surface of the connecting plate. and accordingly the entire ensemble forms a u-shaped permanent magnet.
• the pole faces of the U-shaped permanent magnet may lie in one plane and the oscillatory motion may be parallel to this plane.
• the connection plate may be formed as a flat rectangular plate to guide the magnetic flux optimally between the individual permanent magnet elements.
• the reflux plate may be similar or identical to the connection plate material, structure and dimensions and used to provide an annular course of magnetic flux.
• the permanent magnet and the reflux plate may be arranged opposite each other, wherein z. B. the return plate and the connecting plate of the two permanent magnet elements form a top or bottom of a magnet system thus formed. Based on the annular magnetic flux generated by the structure of the magnet system, the permanent magnetic field in the air gap may have two oppositely directed magnetic flux currents.
• the coil may comprise a winding of one or a plurality of wires, e.g. Example of copper, and be connected to the spring element, that it is mounted according to an embodiment parallel to the winding plane and according to another embodiment about an axis of rotation extending in the winding axis deflectable in the at least one air gap.
• the deflection of the coil can be effected by a deflection means of the induction generator to abut the oscillation movement of the coil made possible by the spring element.
• the oscillatory motion may be a damped vibration whose intensity decreases and eventually fades over time, depending on a specific structure and / or spring force of the spring element.
• an alternating electrical current can be induced in the winding of the coil.
• One or more spring elements can be used, which carry the coil and can enable the oscillation movement of the coil.
• a spring element may be a suitably designed spring, for example a spiral spring, torsion spring, tension spring or compression spring.
• the permanent magnet, the reflux plate and one end of the spring element may be fixedly secured to a support structure of the induction generator.
• This embodiment has the advantage that in particular the relatively heavy elements of the magnet system can be used statically to generate electricity, whereby the noise can be minimized and the life of the induction generator can be extended. Likewise, a size of the induction generator can be smaller, since the support structure must withstand no stress due to an acceleration of the heavy magnets.
• the support structure may be a housing or part of a housing of the induction generator.
• the coil can be mounted by the spring element movable relative to the support structure and thus with respect to the permanent magnetic field.
• the permanent magnet and the reflux plate may be separated from each other by the air gap. There can thus be no point of contact between the permanent magnet and the reflux plate.
• the coil may be movably arranged in the air gap. The entire coil can be inside the air gap.
• the spring element may be configured to cause the oscillatory movement of the coil in the air gap transverse to the magnetic flux of the permanent magnetic field within the air gap in response to the deflection of the coil.
• the oscillatory motion may comprise opposing linear movements of the coil.
• the induction generator may be configured such that the permanent magnetic field forms a magnetic field circuit whose magnetic flux flows from a first pole of the permanent magnet through a first portion of the air gap, through the reflux plate and through a second portion of the air gap to a second pole of the permanent magnet.
• a first winding half of the coil can be arranged in the first section of the air gap and a second winding half of the coil can be arranged in the second section of the air gap.
• the winding halves may be disposed on opposite sides of the coil. So can be advantageously ensured that both winding halves of the coil a maximai strong magnetic effect are exposed. Accordingly, high efficiency in power generation can be achieved with simple means.
• a central axis of the coil may be parallel or approximately parallel to the magnetic flux through the first portion and the second portion of the air gap.
• the winding of the coil extends around the central axis of the coil so that the central axis can be oriented orthogonal to a winding winding plane comprising the winding.
• the induction generator may include a first permanent magnet for generating a first magnetic flux current of the permanent magnetic field, a first return plate for guiding the first magnetic flux current, a second permanent magnet for generating a second magnetic flux current of the permanent magnetic field, and a second reflux plate for guiding the second magnetic flux.
• the first magnetic flux current in a first magnetic field circuit can flow from a first pole of the first permanent magnet through a first section of the air gap and through the first return plate to a second pole of the first permanent magnet and the second magnetic flux current in a second magnetic field circle from a first pole of the second permanent magnet through the second reflux plate and through a second portion of the air gap to a second pole of the second permanent magnet.
• first winding half of the coil can be arranged in the first section of the air gap and a second winding half of the coil can be arranged in the second section of the air gap.
• first return plate and the second return plate may each be U-shaped bent, wherein the respective permanent magnet rests on an inner side of a leg of the U-shaped reflux plate and is considered by an inner side of the other leg. It can thus be achieved that both magnetic flux streams in turn flow annularly in the respective magnet system.
• this embodiment has a particularly simple way of encapsulating the induction generator with desirable dust and / or water resistance, since the U-shaped return plates almost completely protectively surrounds the sensitive coil-spring system and only a gap between the first and the second return plate needs to be closed.
• the at least one permanent magnet may be arranged inside the coil.
• the coil can be arranged movable relative to the permanent magnet.
• the coil may be rotatably mounted about an axis of rotation extending through a winding plane of the coil to perform the oscillatory movement can. In this case, small deflections of the coil may be sufficient to generate sufficient electrical energy can.
• a first return plate adjoining a first pole section of the permanent magnet and a second return plate adjoining a second pole section of the permanent magnet may be provided.
• the pole sections may be realized by pole shoes or by end sections of the permanent magnet.
• the first return plate may have a first angled portion extending along a first longitudinal side of the permanent magnet and the second return plate may have a second angled portion extending along a second longitudinal side of the permanent magnet opposite the first longitudinal side.
• the longitudinal sides can run parallel to a central axis of the permanent magnet running between the pole sections.
• a first air gap may be between the permanent magnet and the first angled portion and a second air gap may be located between the permanent magnet and the second angled portion.
• the spring element of the induction generator may comprise a first flat spiral spring and a second flat spiral spring, between which the coil may be oscillated in the air gap.
• Flat spiral springs can be used cost-effectively and compactly in order to ensure suitable oscillation of the coil.
• a so-called spring parallelogram can be formed, with which the coil can be set in a particularly uniform and long-lasting oscillation. An efficiency of the induction generator can thus be further increased.
• the spring element may represent an electrical conductor for electrically contacting the coil.
• a portion of the spring element may comprise a contact element for current decrease of an alternating current provided by the oscillating movement of the coil.
• the spring element can be used to conduct the electrical current induced in the coil, for example between the coil and an electrical load.
• two mutually electrically insulated spring elements can be used, via which the coil can be both electrically contacted and movably mounted relative to a support structure of the induction generator.
• electrical connections of the coil can be contacted electrically via two flat-flexion springs, the flat-flexion springs being electrically insulated from one another.
• the coil of the induction generator may be formed without a core.
• the coil can be carried out with a very low weight. This results in the advantages that the coil can be very quickly vibrated against a low resistance from a rest position and the vibration itself can have a very high frequency. Also in this way the efficiency of the induction generator can be improved.
• the coil can be enclosed by a coil holder.
• the coil socket can be connected to a further end of the spring element lying opposite the end of the spring element fixed to the support structure.
• a spring force of the spring element via the coil holder loss and evenly transmitted to the coil.
• this embodiment enables a simple implementation of a forwarding of the electrical current generated in the winding of the coil to the spring element, for example for the current output via a contact integrated in the spring element.
• the coil socket can have two extensions, into which one end of a flat spiral spring can engage, in order to hold the coil socket.
• the coil socket can have an actuating element for deflecting the coil.
• the actuator may, for example, be in the form of an actuating tongue and arranged to be easily reached by an actuator and to deflect the coil from its rest position in one of two opposite directions. After a release of the actuating element, the oscillation movement of the coil can begin.
• the induction generator may include detection means for detecting an initial polarity of an AC voltage provided from the coil due to the oscillation movement.
• the initial polarity is dependent on an initial direction of the oscillation following the deflection, and thus on a direction of the deflection of the coil.
• the detection means may be configured to detect an initial direction of an AC current provided from the coil due to the oscillation movement.
• it can be determined, for example, in which of the two opposite directions the coil has been deflected in preparation for the oscillatory movement by means of the actuating element.
• it can be detected in which direction an actuating element of the induction generator moves has been.
• a distinction between a switch-on and a switch-off may be detecting an initial polarity of an AC voltage provided from the coil due to the oscillation movement.
• the initial polarity is dependent on an initial direction of the oscillation following the deflection, and thus on a direction of the deflection of the coil.
• the detection means may be configured to detect an initial direction
• the present invention further provides a method for generating an electric current using an induction generator having at least one permanent magnet for generating a permanent magnetic field, at least one reflux plate for guiding the permanent magnetic field, a coil and a spring element, wherein the permanent magnet and at least a portion of the reflux plate by a Air gap penetrated by the permanent magnetic field are separated from each other, and wherein the coil is connected to the spring element and at least a portion of the coil is movably arranged in the air gap, the method comprising the following steps:
• Fig. 1A is a plan view of an induction generator according to an embodiment of the present invention.
• Fig. 1B is a cross-sectional view of the induction generator of Fig. 1A;
• FIG. 1 C the induction generator of Fig. 1 A in a perspective
• FIG. 2A is a plan view of an induction generator according to another embodiment of the present invention.
• Fig. 2B is a cross-sectional view of the induction generator of Fig. 2A;
• 3A is a plan view of an induction generator according to another embodiment of the present invention.
• Fig. 3B is a cross-sectional view of the induction generator of Fig. 3A;
• FIG. 4 is a cross-sectional view of an induction generator according to another embodiment of the present invention.
• FIG. 5 is a flowchart of a method for generating a
• Fig. 6 is a plan view of an induction generator according to another embodiment of the present invention.
• Fig. 7 is a cross-sectional view of the induction generator of Fig. 6;
• Fig. 8 is a further cross-sectional view of the induction generator
• FIG. 10 is an exploded view of the induction generator of FIG. 6; FIG.
• 1 1 is a representation of the induction generator of FIG. 10th
• FIG. 1A shows in plan view an induction generator 100 according to an embodiment of the present invention. Shown is a support structure 102, a spring element 104, a reflux plate 106, a coil 108 in a coil socket 1 10 and two current collector 1 12th
• the spring element 104 is composed of a first flat bending spring 1 14 and a second flat spiral spring 1 1 6, each of which laterally of the coil 108 and the reflux plate 106 are parallel.
• the coil 108 is formed as a flat rectangular winding, which is only partially visible in the illustration in FIG. 1, since it is covered by the reflux plate 106.
• One end 1 18 of the spring element 104 formed by the flat-flexion springs 1 14, 1 1 6 is fixed to the support structure 102, and another end 120 engages in two extensions 122 of the coil holder 1 10 carrying the coil 108.
• the coil 108 is connected only indirectly via the spring element 104 with the support structure 102 and by means of the spring element 104 movable or oscillating in the induction generator 100 stored.
• the coil 108 can be deflected and vibrated with the assistance of the spring element 104 in a magnetic field of a magnet system of the induction generator 100 which is not visible in the illustration in FIG. Force to generate an electrical current flow in the winding of the coil 108.
• a portion of the over the coil socket 1 10 coupled to the coil 108 spring member 104 forms a contact element 126, via which the electrical current induced in the coil 108 to flow to the contact element 126 connected to the current collector 1 12 and can be tapped there.
• the current collector 1 12, the reflux plate 106 are arranged partially overlapping.
• the induction generator 100 can be fastened to an object, for example a wall.
• suitable fixing elements such as screws can be used.
• the oscillation of the coil 108 this moves, while the support structure 102, the Magnetsys- and the magnetic circuit caused by the magnetic system are at rest.
• the coil 108 will move during the oscillation while the support structure 102, the magnet system and the object are at rest.
• FIG. 1B shows a cross-sectional view of the induction generator 100 of FIG. 1A along a line B-B in FIG. 1A according to an embodiment of the present invention.
• the magnet system 128 is composed of the reflux plate 106 and a permanent magnet 130 lying opposite thereto.
• the permanent magnet 130 is here formed by a first permanent magnet element 132, a second permanent magnet element 134, and a connecting plate 136 coupling the first permanent magnet element 132 to the second permanent magnet element 134.
• the first permanent magnet element 132 is contacted with its north pole and the second permanent magnet element 134 with its south pole with the metallic connecting plate 136, so that the entire ensemble forms a U-shaped permanent magnet 130, in which the first permanent magnet element 132, the first pole, the second permanent magnet element 134 second pole and the connecting plate 136 forms the yoke.
• the magnetic system 128 forms a permanent magnetic field 138 indicated by a plurality of arrows. In the illustration in FIG. 1B, a magnetic flux of the permanent magnetic field 138 flows counterclockwise.
• the coil 108 is movably mounted in the permanent magnet field 138 by means of the first flat bending spring 14 and the second flat spiral spring 11, so that they are deflected by the actuating element in a horizontal arrow can oscillate in the representation in Fig. 1B marked relative movement 142.
• the magnet system 128 is of static construction. It consists essentially of the two permanent magnet elements 132, 134, which are magnetically coupled on one side with the remindbloteisen or the connecting plate 136 without an air gap, and the second reflux iron or the reflux plate 106 and is magnetically closed by the air gap 140.
• the air gap 140 thus two constant, counter-directed magnetic fields or magnetic flux currents are generated.
• the air gap 140 is the light, flat quadrangular winding of the coil 108 without iron core.
• the coil 108 is movably mounted and can complete the relative movement 142 along the air gap 140.
• FIG. 1C shows the induction generator 100 of FIG. 1A in a perspective view, according to an exemplary embodiment of the present invention.
• the provided by the spring element 104 storage for the coil 108 is clearly documented.
• the illustration shows here consists of the storage of the two flat-angle springs 1 14, 1 16, which are arranged parallel to each other.
• both spring ends are fixed in the housing or in the support structure 102 and at the other end 120 on the bobbin or the coil socket 1 10. Thanks to such an arrangement in the form of a parallelogram, the first spring.
• a significant advantage of this design is that mechanical losses only from an internal friction in the springs 1 14, 1 16 - which can be regarded as almost negligible - and consist of an air resistance during the oscillation movement of the coil 108. Add to this still electrical resistance losses in the coil 108, however, incurred in any type of generator. Since the first flat spring 1 14 and the second flat spring 1 1 6 are electrically insulated from each other, they can be used simultaneously for current collection purposes or for an electrical connection of the coil 108.
• Fig. 1 D shows the induction generator 100 of Fig. 1 A in an exploded view, according to an embodiment of the present invention.
• the spring element 104 embodied as a "spring parallelogram" can be clearly recognized
• the bearing of the coil 108 by means of the "spring parallelogram" 104 is advantageous, but not absolutely necessary.
• the coil 108 may, for. B. also be stored swinging by means of a simple leaf spring or diaphragm. It is also a simple pivot bearing or a linear bearing in combination with rotary, tension or compression springs possible.
• sliding contacts or wires can be used.
• the actuating tongue 124 of the bobbin 1 10 is detected by an actuator, deflected in one of the two directions 142 A, 142 B to a certain way or to a certain force and released suddenly.
• the coil 108 begins to oscillate in the constant magnetic field 138, and according to the Lorentz law, electrical energy is induced therein, which is taken off by the two oscillating contact springs or flat-flex springs 1 14, 1 1 6 for supplying a transmitting module. Due to the mutual induction, a vibration amplitude of the coil 108 decreases depending on a consumer power, until the bobbin 1 10 comes to rest.
• the pulse length can be controlled.
• Losses are essentially composed of air resistance during oscillation and resistance losses in the copper winding of the coil 108. Efficiencies achievable with this concept range between 65 and 80%.
• the iron loop of the magnetic system 128 of the energy converter 100 is used in contrast to conventional systems only in a partial range of the magnetosuppression and therefore does not place high demands on the magnetic properties and significantly reduces system costs.
• the induction generator 100 generates an alternating current. It is possible to change the polarity z. B. of the first half sine and to use for the direction detection. Thus, z. B. an "on" and an "off ' signal are generated and sent, depending on the direction of actuation of the generator 100, without additional coding contacts.
• the magnet system 128 of the energy converter 100 can be constructed in different ways.
• FIGS. 2A and 2B show a further embodiment of the induction generator 100.
• FIG. 2A shows the exemplary induction generator 100 in a plan view. It can be seen that the upper side of this embodiment of the induction generator 100 corresponds largely to that shown in FIG. 1A, with the difference that the induction generator 100 shown in FIG. 2A is narrower and the current collectors 12 do not overlap the reflux plate 106.
• the permanent magnet 130 is formed only by a single magnet whose alignment, in contrast to the other embodiment, is parallel to the winding of the coil 108 and has two pole pieces 200.
• the magnetic circuit 128 is here provided with a larger magnet 130 with the two pole pieces 200 on each side.
• the return or return plate 106 is in turn arranged by the air gap 140 from the rest of the magnet system 128 locally separated. With the design shown here, the flux density of the magnetic flux of the permanent magnetic field 138 at the pole faces of the permanent magnet 130 can be significantly increased. The flux density is calculated from the ratio between the pole faces of the magnet 130 and the pole faces of the pole pieces 200.
• FIGS. 3A and 3B show a further embodiment of the induction generator 100.
• the embodiment of the induction generator 100 shown in Fig. 3A corresponds to that shown in Fig. 1A, with the difference that in the induction generator 100 in Fig. 3A, the reflux plate 106 is disposed above the current collector 1 12.
• the induction generator 100 shown here additionally has a third permanent magnet element 300 and a fourth permanent magnet element 302, which form a further permanent magnet 304 in combination with the reflux plate 106.
• the further permanent magnet 304 is separated by the air gap 140 of the permanent magnet 130 in mirror image and forms together with this the magnetic system 128th
• FIG. 4 shows a cross-sectional view of another embodiment of the induction generator 100.
• the magnetic circuit 128 is also formed here by the permanent magnet 130 and the further permanent magnet 304, but here two reflux plates 106 are used, which are bent in a U-shape. Accordingly, the permanent magnet field 138 is divided into a first magnetic flux stream 400 and a second magnetic flux stream 402.
• the coil 108 is arranged in the air gap 140 formed here by the U-shape of the reflux plates 106, so that a first winding half 404 of the coil is exposed to the first magnetic flux stream 400 and a second winding half 406 of the coil 108 is exposed to the second magnetic flux 402.
• Fig. 4 selected design allows easy encapsulation of the generator 100, if z. B. a dustproof or waterproof design is desired.
• the winding halves 404, 406 of the coil 108 can oscillate in a strong magnetic field 138 as possible.
• the moving vibration system of the induction generator 100 is very compact and lightweight.
• the coil 108 can only come in unwanted vibrations from the outside with very strong vibrations.
• the oscillating body or the coil 108 may be connected to a switch housing be blocked by the actuator in rest and end position. Another possibility is to measure the induced voltage and to evaluate only a voltage increase above a certain level as a switching signal.
• FIG. 5 shows a flow chart for one embodiment of a method 500 for generating an electrical current using an induction generator.
• the method 500 can be advantageously carried out in conjunction with an induction generator, as explained in detail with reference to the preceding or following FIGS. 1A to 4.
• a step 502 by actuating an actuating element of the induction generator, a coil movably mounted by means of a spring element is deflected by a predetermined amount or with a predetermined force. As a result, the coil performs oscillation movement transverse to a magnetic flux of a permanent magnetic field existing in the induction generator.
• an electric current is induced in a winding of the coil by means of an electromagnetic induction based on the oscillation movement of the coil.
• the electric current is tapped for operation, for example, of a self-sufficient radio switch.
• the induction generator 100 has a support structure 102, a first return plate 106 and a second return plate 606.
• the reflux plates 106, 606 are fixedly connected to the support structure 102.
• a coil 108 carried by a coil holder 1 10 is movably supported relative to the carrier structure 102 and the reflux plates 106, 606 by means of a spring element composed of a first flat spiral spring 1 14 and a second flat spiral spring 1 1 6.
• the flat bending springs 1 14, 1 1 6 are arranged on opposite sides of the induction generator 100.
• the reflux plates 106, 606 are arranged between the flat bending springs 1 14, 1 1 6.
• the assembly of the support structure 102 and the reflux plates 106, 606 is held together by a bracket 650.
• the bracket 650 is located centrally between the flat-angle springs 1 14, 1 1 6.
• the induction generator 100 can be fastened to an object, for example a wall.
• suitable fixing elements such as screws can be used.
• FIG. 7 shows a cross-sectional view of the induction generator 100 of FIG. 6 taken along a line D-D shown in FIG. 6 according to an embodiment of the present invention.
• the support structure 102, the reflux plates 106, 606, the clamp 650 and the coil 108 supported by the coil holder 1 10 can be seen.
• a permanent magnet 130 is arranged between the return plates 106, 606, a permanent magnet 130 is arranged.
• the permanent magnet 130 has two optional pole pieces 200, 700.
• a shown free end portion of the flat bending spring 1 1 6 can be used as an electrical contact for electrically contacting the coil 108.
• the permanent magnet 130 is disposed between the pole pieces 200, 700.
• the permanent magnet 130 has a rectangular cross section.
• the pole shoes 200, 700 are plate-shaped and abut the permanent magnet 130 on opposite sides.
• the pole pieces 200, 700 form pole sections of the permanent magnet 130.
• the first pole piece 200 acts as a south pole and the second pole piece 700 as a north pole.
• a middle section of the first return plate 106 rests on a surface of the first pole piece 200 facing away from the permanent magnet 130.
• the first pole piece 200 has a, for example, centrally arranged elevation, which engages in a through hole of the first reflux plate 106. As a result, slipping of the first pole piece 200 relative to the first reflux plate 106 can be avoided.
• a short angled portion of the first return plate 106 and a long angled portion of the first return plate 106 abut. The short and the long angled sections are in the same direction aligned, down here, so that the first return plate 106 is formed approximately U-shaped.
• the angled portions are each approximately at right angles to the central portion of the first return plate 106 and angled toward the permanent magnet 130.
• the central portion of the first return plate 106 terminates on the side of the short angled portion at the edge of the first pole piece 200, but extends beyond the opposite edge of the first pole piece 200 on the side of the long angled portion.
• the short angled portion of the first return plate 106 located to the left herein, extends along an edge of the first pole piece 200 and slightly beyond an edge of the permanent magnet 130.
• the short angled portion of the first return plate 106 may be at the edge of the first pole piece and at the edge of the permanent magnet 130 abut.
• the long angled portion of the first return plate 106 extends along an edge of the first pole piece 200, the edge of the permanent magnet 130 and the edge of the second pole piece 700.
• the long angled portion of the first return plate 106 due to the projection of the Central portion over the edge of the first pole piece 200 at a distance from the pole pieces 200, 700 and the permanent magnet 130.
• a middle section of the second return plate 606 rests on a surface of the second pole piece 700 facing away from the permanent magnet 130.
• the second pole piece 700 has a, for example, centrally arranged elevation, which engages in a through hole of the second reflux plate 606. As a result, slippage of the second pole piece 700 with respect to the second return plate 606 can be avoided.
• a short angled portion of the second return plate 606 and a long angled portion of the second return plate 606 abut.
• the short and the long angled section point in the same direction, here upwards, so that the second return plate 606 is formed approximately U-shaped.
• the angled portions are each approximately at right angles to the central portion of the second return plate 606 and angled towards the permanent magnet 130.
• the middle section of the second return plate 606 terminates on the side of the short angled section at the edge of the second pole piece. however, extends beyond the edge of the second pole piece 700 on the side of the long angled portion.
• the short angled portion of the second return plate 606 may be secured to the edge of the second pole piece 700 and to the second Edge of the permanent magnet 130 abut.
• the long angled portion of the second return plate 606 extends along an edge of the second pole piece 700, the edge of the permanent magnet 130 and the edge of the first pole piece 200. In this case, the long angled portion of the second return plate 606 due to the protrusion of the Central portion over the edge of the second pole piece 700 at a distance from the pole pieces 200, 700 and the permanent magnet 130.
• the short angled portion of the first return plate 106 is disposed on the same side of the induction generator 100 as the long angled portion of the second return plate 606.
• the short angled portion of the first return plate 106 and the long angled portion of the second return plate 606 partially overlap.
• the long angled portion of the second return plate 606 extends approximately to the level of a surface remote from the first pole piece 200 surface of the central portion of the first return plate 106. Overlapping portions of the short angled portion of the first return plate 106 and the long angled portion of the second return plate 606th are separated by a first air gap 140.
• a first portion of the coil 108 is disposed in the first air gap 140.
• the air gap 140 facing surfaces of the short angled portion of the first return plate 106 and the long angled portion of the second return plate 606 each have a curvature that is adapted to a radius of movement of the first portion of the coil 108 within the first air gap 140.
• the permanent magnetic field generated by the permanent magnet 130 traverses the air gap 140.
• the movement of the first portion of the coil 108 within the first air gap 140 is approximately perpendicular to the magnetic field lines of the permanent magnetic field crossing the air gap 140.
• the long angled portion of the first return plate 106 is disposed on the same side of the induction generator 100 as the short angled portion of the second return plate 606.
• the long angled portion of the first return plate 106 and the short angled portion of the second return plate 606 partially overlap.
• the long angled portion of the first return plate 106 extends approximately to a level of the surface of the central portion of the second return plate 606 facing away from the second pole piece 700. Overlapping portions of the long angled portion of the first return plate 106 and the short angled portion of the second return plate 606 are separated by a second air gap 740. A second portion of the coil 108 opposite the first portion is disposed in the second air gap 740. Second air gap 740 facing surfaces of the long angled portion of the first return plate 106 and the short angled portion of the second return plate 606 each have a curvature that is adapted to a radius of movement of the second portion of the coil 108 within the second air gap 740.
• the permanent magnetic field generated by the permanent magnet 130 passes through the second air gap 740.
• the movement of the second portion of the coil 108 within the second air gap 740 is approximately perpendicular to the magnetic field lines of the permanent magnetic field passing through the second air gap 740.
• the carrier structure 102 lies flat against a surface of the first reflux plate 106 facing away from the first pole piece 200.
• the support structure 102 has an extension which engages in a passage opening of the first return plate 106.
• the bracket 650 extends along an outer surface of the support structure 102 and along an outer surface of the second return plate 606 and engages with a first hook in a recess of the support structure 102 opposite recess of the support structure 102 and with a second hook in the recess of the second return plate 606.
• the coil holder 1 10 is designed as a rectangular ring with an outer circumferential groove. In the groove, the coil 108 forming winding or arranged the coil 108 forming windings. Through the circumferential groove, the winding plane of the coil 108 is clamped.
• the permanent magnet 130 is disposed within an inner space of the coil holder 110 that is enclosed by the coil holder 110. The axis of rotation of the coil 108 extends through the winding plane of the coil 108 and across the permanent magnet 130th
• the coil 108 is shown in the rest position. In the rest position, a central axis of the coil 108 which is orthogonal to a winding plane of the coil 108 is slightly inclined relative to a central axis of the permanent magnet 130 extending between the poles of the permanent magnet 130.
• the coil 108 is mounted so as to be rotatable relative to the permanent magnet 130 about an axis of rotation. Starting from the rest position, the coil 108 can be deflected in both directions of rotation about the axis of rotation, whereby due to the permanent magnetic field in each case a current in the winding or the windings of the Coil 108 is induced.
• FIG. 8 shows another cross-sectional view of the induction generator 100 of FIG. 7 according to an embodiment of the present invention.
• the coil 108 is shown in a first deflected position.
• the first section of the coil 108 located in the first air gap 140 has become toward the middle section of the second return plate 606 and the second air gap 740 located second portion of the coil 108 in the direction of the central portion of the first return plate 106 moves.
• the coil 108 can begin an oscillatory movement, whose initial movement direction is indicated by arrows.
• the induction generator 100 may include an actuator connected to the coil socket 110.
• FIG. 9 shows another cross-sectional view of the induction generator 100 of FIG. 7 according to an embodiment of the present invention.
• the coil 108 is shown in a second deflected position.
• the first section of the coil 108 located in the first air gap 140 has become in the direction of the middle section of the first reflux plate 106 and in the second air gap 740 located second portion of the coil 108 in the direction of the central portion of the second return plate 606 moves.
• the coil 108 can begin an oscillatory movement, whose initial movement direction is indicated by arrows.
• the spool 108 may have been moved to the second deflected position.
• the coil 108 driven by the flat-flexion springs 1 1 6 can perform an oscillatory movement which alternately extends in the directions of movement indicated by arrows in FIGS. 8 and 9.
• FIG. 10 shows the induction generator 100 of FIG. 6 in an exploded view according to an embodiment of the present invention.
• the permanent magnet 130 and the pole pieces 200, 700 are each designed as a rectangular-shaped plates.
• the coil 108 has a rectangular cross-sectional area.
• the coil holder 110 is designed as a circumferential ring, within which the permanent magnet 130 and the pole pieces 200, 700 can be arranged.
• the flat bending springs 1 14, 1 1 6 are each U-shaped.
• the carrier structure 102 and the coil holder 1 10 have slot-shaped receiving elements 1061, 1062, into which sections of the flat-flexion springs 1 14, 1 16 can be inserted in order to form the flat-angle springs 1 14, 1 1 6 on the support structure 102 and on the other hand to fix the coil socket 1 10.
• FIG. 10 only the receiving elements 1061, 1062 can be seen for the flat bending spring 1 14.
• the receiving elements for the flat bending spring 1 1 6 are executed corresponding to the receiving elements 1061, 1062 shown.
• the free ends of the flat spiral spring 1 14 have in the assembled state in opposite directions as the free ends of the flat spiral spring 1 1 6.
• the coil 108 can be electrically contacted via the flat coil springs 1 14, 1 1 6.
• the support structure 102 has a base plate arranged parallel to the middle section of the first return plate 106 in the assembled state and two side walls projecting at a right angle from the base plate, which in the installed state have lateral guides for the reflux plates 106, 606 and optionally for the pole shoes 200, 700 and Permanent magnets 130 form.
• the side walls are guided in the assembled state within the coil holder 1 10.
• the side walls have passage openings 1071, 1072 for receiving pin 1074 of the coil holder 110 which acts as a rotary shaft.
• the axis of rotation of the coil 108 extends through the through-openings 1071, 1072.
• an actuator 1080 is arranged, via which the coil 108 can be deflected out of its rest position, against restoring forces of the flat spiral springs 1 14, 1 1 6.
• the coil 108 is rotatably supported by an axle and is configured to oscillate about the axis during operation of the induction generator 100.
• the magnet system of the induction generator 100 is constructed with the magnet 130.
• the insects 200, 700 which are designed here as a flat iron square, are provided as a placeholder to save volume of the magnet 130.
• the generator 100 can be equipped with a low-cost hard ferrite magnet as a permanent magnet 130. In that case, the intermediate pole pieces 200, 700 can be omitted.
• Fig. 1 1 shows the induction generator 100 of Fig. 10 in the assembled state according to an embodiment of the present invention.
• the first end is inserted into the receiving element 1062 of the coil holder 1 10 and the first end opposite end portion is guided by the receiving element 1061 of the support structure 102, so that the second end of the flat bending spring 1 14 is free-standing and used as an electrical contact can be.
• an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, this can be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment, either only the first Feature or only the second feature.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Apparatuses For Generation Of Mechanical Vibrations (AREA)
• Reciprocating, Oscillating Or Vibrating Motors (AREA)
• Reciprocating Pumps (AREA)

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Publications (1)

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ID=49510152

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• 2012
  • 2012-11-09 DE DE102012220419.9A patent/DE102012220419A1/de not_active Withdrawn
• 2013
  • 2013-10-28 EP EP13783560.9A patent/EP2918006A2/de not_active Withdrawn
  • 2013-10-28 CN CN201380053818.3A patent/CN104737429B/zh active Active
  • 2013-10-28 JP JP2015541078A patent/JP6389822B2/ja not_active Expired - Fee Related
  • 2013-10-28 KR KR1020157014873A patent/KR102101312B1/ko active IP Right Grant
  • 2013-10-28 WO PCT/EP2013/072486 patent/WO2014072197A2/de active Application Filing
  • 2013-10-28 US US14/441,759 patent/US9985509B2/en active Active

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