Device for damping vibrations with an energy recovery capability, and vehicle with such a device

Patent metadata

Field	Value
Publication number	US-9397534-B2
Application number	US-201314761560-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Jan 17, 2013
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A device for damping vibrations with an energy recovery capability includes an input shaft rotatable about the input shaft longitudinal axis with an alternating rotational direction by a component that vibrates relative to the device. A freewheel device is connected to the input shaft on the drive side and at least indirectly to a generator on the output side, the generator being capable of converting the kinetic rotational energy into electric energy and transferring said energy to an energy storage element, and the freewheel device includes a first and a second freewheel, each being rotationally fixed to the input shaft on the drive side and arranged so as to lock in opposite directions of rotation. The second freewheel is connected to a reversing gear mechanism on the output side, and the reversing mechanism and the first freewheel are at least indirectly connected to the generator on the output side.

First claim

What is claimed is:

1. A device for damping vibrations with energy recovery, comprising:
an input shaft, having a longitudinal axis and being rotatable about the longitudinal axis in alternating rotational directions by a component that vibrates relative to the device;
a freewheel device having an input side and an output side and being connected on the input side to the input shaft, said freewheel device comprising a first freewheel and a second freewheel arranged on the output side, said first and second freewheels each being rotationally fixed to the input shaft and configured to lock in opposite directions of rotation of the input shaft; and
a generator, capable of converting the kinetic rotational energy into electric energy and transferring said electric energy to an energy storage element, said second freewheel being connected on the output side to a reversing gear mechanism, said reversing gear mechanism and said first freewheel being at least indirectly connected to the generator on the output side.

2. The device of claim 1 , further comprising a hollow shaft at least indirectly connected to a rotor shaft of the generator, wherein the first and second freewheels and the reversing gear mechanism are arranged within the hollow shaft, and wherein the first freewheel and the reversing gear mechanism mesh with the hollow shaft.

3. The device of claim 1 , further comprising a control device, constructed to enable a continuous adjustment of a degree of energy conversion of the generator.

4. The device of claim 1 , wherein the energy storage element is configured as battery or a capacitor.

5. The device of claim 1 , further comprising a reduction gear arranged upstream of the generator, said reduction gear increasing an angular speed of the freewheel device for the generator on the output side.

6. A vehicle comprising at least one device for damping vibrations with energy recovery according to claim 1 .

7. The Vehicle of claim 6 , further comprising a wheel guide element, said input shaft being connected directly or indirectly to the wheel guide element.

8. The vehicle of claim 7 , wherein the longitudinal axis of the input shaft is arranged coaxially to a pivot axis of the wheel guide element.

9. The vehicle of claim 7 , wherein the wheel guide element is constructed as a control arm.

10. The vehicle of claim 6 , wherein the freewheel device is arranged on a body of the vehicle or an auxiliary frame of the vehicle.

11. The vehicle of claim 6 , further comprising a control device and a driving stability control apparatus, said control device enabling continuous adjustment of a degree of energy conversion of the generator, and being controllable by the driving stability control device.

Assignees

• Audi Ag
• Karlsruher Inst Für Technologie

Inventors

• Koch Tilo
• Unger Andreas
• Scheurich Bastian
• Gauterin Frank

Classifications

• F03G7/081 Primary

  recovering energy from moving road or rail vehicles, e.g. collecting vehicle vibrations in the vehicle tyres or shock absorbers · CPC title

• H02K7/1892 Primary

  Generators with parts oscillating or vibrating about an axis · CPC title

• F03G7/08

  recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine · CPC title