Induction generator and method for generating an electric current using an induction generator

Patent metadata

Field	Value
Publication number	US-9985509-B2
Application number	US-201314441759-A
Country	US
Kind code	B2
Filing date	Oct 28, 2013
Priority date	Nov 9, 2012
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

An induction generator ( 100 ) is proposed, having at least one permanent magnet ( 130 ) for generating a permanent magnetic field ( 138 ), at least one reflux plate ( 106 ) for guiding the permanent magnetic field ( 138 ), a coil ( 108 ) and a spring element ( 104 ), wherein the permanent magnet ( 130 ) and the reflux plate ( 106 ) are separated from one another by an air gap ( 140 ) through which the permanent magnetic field ( 138 ) passes, and wherein the coil ( 108 ) is connected to the spring element ( 104 ) and is movably disposed in the air gap ( 140 ), characterized in that the spring element ( 104 ) is designed to cause an oscillation movement of the coil ( 108 ) in the air gap ( 140 ) transverse to a magnetic flux of the permanent magnetic field ( 138 ) inside the air gap ( 140 ) in response to a deflection of the coil ( 108 ).

First claim

The invention claimed is:

1. An induction generator, comprising:
a permanent magnet configured to generate a permanent magnetic field;
a reflux plate configured to guide the permanent magnetic field;
a coil; and
a spring element;
wherein the permanent magnet and a section of the reflux plate are separated from one another by an air gap through which the permanent magnetic field passes;
wherein the coil is connected to the spring element and at least a section of the coil is movably disposed in the air gap; and
wherein in response to a deflection of the coil, the spring element is configured to cause the section of the coil to oscillate in the air gap transverse to the magnetic flux of the permanent magnetic field inside the air gap; and
wherein the permanent magnetic field is configured to generate a magnetic flux through a magnetic field circuit, the magnetic flux is configured to flow from a first pole of the permanent magnet through a first section of the air gap, through the reflux plate and through a second section of the air gap to a second pole of the permanent magnet, and wherein a first winding half of the coil is disposed in the first section of the air gap and a second winding half of the coil is disposed in the second section of the air gap.

2. The induction generator according to claim 1 , wherein the permanent magnet, the section of the reflux plate, and an end of the spring element are attached to a supporting structure of the induction generator.

3. The induction generator according to claim 1 , wherein the portion of the reflux plate is the entire reflux plate and wherein the section of the coil is the entire coil.

4. The induction generator according to claim 1 , wherein a central axis of the coil extends parallel to the magnetic flux in the first section and the second section of the air gap.

5. The induction generator according to claim 1 , wherein the permanent magnet is a first permanent magnet configured to generate a first magnetic flux of the permanent magnetic field;
wherein the first flux plate is a first reflux plate guiding the first magnetic flux;
the induction generator further comprising:
a second permanent magnet configured to generate a second magnetic flux of the permanent magnetic field; and
a second reflux plate configured to guide the second magnetic flux;
wherein the second magnetic flux flows from a first pole of the second permanent magnet through the second reflux plate and through a second section of the air gap to a second pole of the second permanent magnet; and
wherein a first winding half of the coil is disposed in the first section of the air gap and a second winding half of the coil is disposed in the second section of the air gap.

6. The induction generator according to claim 1 , further comprising a coil mount configured to support the coil, wherein the permanent magnet is disposed inside the coil mount.

7. The induction generator according to claim 1 , wherein the coil is rotatably supported about a rotational axis extending through a winding plane of the coil; and
wherein the oscillation movement of the coil is a rotational oscillation about the rotational axis.

8. The induction generator according to claim 1 , wherein the spring element comprises a first flat flexible spring and a second flexible spring; and
wherein the coil is movably supported in the air gap between the first flat flexible spring and the second flexible spring.

9. The induction generator according to claim 1 , wherein the spring element is an electrical conductor configured to establish an electrical contact with the coil.

10. The induction generator according to claim 1 , wherein the coil is designed without a core.

11. The induction generator according to claim 1 , wherein the coil is enclosed in a coil mount, which is connected to a first end of the spring element lying opposite to a second end of the spring element.

12. An induction generator comprising:
a permanent magnet configured to generate a permanent magnetic field, the permanent magnetic field configured to generate a magnetic flux through a magnetic field circuit;
a first reflux plate and a second reflux plate configured to guide the permanent magnetic field, the first reflux plate rests against a first pole section of the permanent magnet, the first reflux plate includes a first angled section extending along a first longitudinal side of the permanent magnet, and the second reflux plate rests against a second pole section of the permanent magnet and includes a second angled section extending along a second longitudinal side of the permanent magnet opposite to the first longitudinal side;
a coil; and
a spring element;
wherein a first air gap is located between the first pole section and the first angled section and a second air gap is located between the second pole section and the second angled section through which the permanent magnetic field passes;
wherein the coil is connected to the spring element and a first section of the coil is movably disposed in the first air gap and a second section of the coil is movably disposed in the second air gap; and
wherein in response to a deflection of the coil, the spring element is configured to cause the first section of the coil to oscillate in the first air gap and the second section of the coil to oscillate in the second air gap transverse to the magnetic flux of the permanent magnetic field inside the first air gap and the second air gap.

13. A method for generating an electrical current, comprising:
generating a permanent magnetic field by a permanent magnet, the permanent magnetic field configured to generate a magnetic flux through a magnetic field circuit;
guiding the permanent magnetic field by a reflux plate, wherein the permanent magnet and a section of the reflux plate are separated from one another by an air gap through which the permanent magnetic field passes, and wherein a coil is connected to a spring element, and at least a section of the coil is movably disposed in the air gap;
deflecting the coil to cause an oscillation movement of the section of the coil in the air gap, transverse to a magnetic flux of the permanent magnetic field inside the air gap, wherein the magnetic flux is configured to flow from a first pole of the permanent magnet through a first section of the air gap, through the reflux plate and through a second section of the air gap to a second pole of the permanent magnet and a first winding half of the coil is disposed in the first section of the air gap and a second winding half of the coil is disposed in the second section of the air gap; and
generating an electrical current in the coil through an electromagnetic induction of the coil when the section of the coil moves traverse to the magnetic flux.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Ruff Eduard

Classifications

• H02K35/04 Primary

  with moving coil systems and stationary magnets · CPC title