System and method for harvesting energy for an electronic device, and a tire configured for use with the same

Patent metadata

Field	Value
Publication number	US-11331967-B2
Application number	US-202017604177-A
Country	US
Kind code	B2
Filing date	Mar 19, 2020
Priority date	Apr 18, 2019
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A system for powering an electronic device within a tire is provided, the system comprising: a generator electrically connected to an electrically conductive wheel, the tire being mounted upon the wheel; the tire including bead portions, sidewalls, shoulders, a tread oriented in a tread region, an inner surface, and a metallic cord oriented within an interior of the tire; at least one conductive element extending from a bead portion and piercing into the interior of the tire and electrically connecting to the metallic cord; at least one electronic device within the vehicle tire; and at least one ground path extending through a thickness of the vehicle tire from the inner surface to an exterior surface in a contact patch of the tread; and wherein the at least one electronic device is electrically connected to the metallic cord and the at least one ground path.

First claim

What is claimed is:

1. A system for powering an electronic device within a vehicle tire, comprising:
an electrical energy generator electrically connected to an electrically conductive vehicle wheel, the vehicle tire being mounted upon the vehicle wheel;
the vehicle tire including a pair of bead portions, a pair of sidewalls, a pair of shoulders, a tread oriented in a tread region, an inner surface, and a metallic cord oriented within an interior of the tire;
at least one conductive element extending from at least one of the pair of bead portions and piercing into the interior of the tire and electrically connecting to the metallic cord;
at least one electronic device within the vehicle tire; and
at least one ground path extending through a thickness of the vehicle tire from the inner surface to an exterior surface in a contact patch of the tread; and
wherein the at least one electronic device is electrically connected to the metallic cord and the at least one ground path.

2. The system of claim 1 , further comprising an electricity storage device electrically connected to the metallic cord and the at least one ground path.

3. The system of claim 2 , wherein the electricity storage device is at least one of a battery and a capacitor.

4. The system of claim 1 , wherein the electronic device is a sensor.

5. The system of claim 1 , wherein the at least one conductive element is at least one of an electrical wire capable of carrying a current, and a conductive rubber material capable of carrying a current.

6. The system of claim 1 , wherein the at least one conductive element is a conductive rubber material oriented in a strip, extending radially from at least one of the pair of bead portions, in contact with the inner surface, and terminating at the metallic cord.

7. The system of claim 1 , wherein the at least one conductive element is a conductive rubber antenna material.

8. The system of claim 1 , wherein the ground path contacts the ground during rolling operation of the tire.

9. The system of claim 1 , wherein the metallic cord is a metallic body ply cord.

10. The system of claim 1 , wherein the electronic device is in contact with the inner surface of the vehicle tire, and further comprising a conductive bridge passing through the inner surface of the vehicle tire and electrically connecting the metallic cord to the electronic device.

11. The system of claim 1 , wherein the electronic device is in contact with the inner surface of the vehicle tire, further comprising an occlusive barrier covering the electricity storage device, the occlusive barrier connected to the inner surface.

12. A vehicle tire with an electronic device oriented on its inner surface, comprising:
a pair of bead portions, a pair of sidewalls, a pair of shoulders, a tread oriented in a tread region, an inner surface, and a metallic cord oriented within an interior of the tire;
at least one conductive element extending from at least one of the pair of bead portions and piercing into the interior of the tire and electrically connecting to the metallic cord;
at least one electronic device within the vehicle tire; and
at least one ground path extending through a thickness of the vehicle tire from the inner surface to an exterior surface in a contact patch of the tread; and
wherein the at least one electronic device is electrically connected to the metallic cord and the at least one ground path.

13. The vehicle tire of claim 12 , further comprising an electricity storage device electrically connected to the metallic cord and the at least one ground path.

14. The vehicle tire of claim 12 , wherein the at least one conductive element is at least one of an electrical wire capable of carrying a current, and a conductive rubber material capable of carrying a current.

15. The vehicle tire of claim 12 , wherein the at least one conductive element is a conductive rubber material oriented in a strip, extending radially from at least one of the pair of bead portions, in contact with the inner surface, and terminating at the metallic cord.

16. The vehicle tire of claim 12 , wherein the at least one conductive element is a conductive rubber antenna material.

17. The vehicle tire of claim 12 , wherein the ground path contacts the ground during rolling operation of the tire.

18. The vehicle tire of claim 12 , wherein the metallic cord is a metallic body ply cord.

19. The vehicle tire of claim 12 , wherein the electronic device is in contact with the inner surface of the vehicle tire, and further comprising a conductive bridge passing through the inner surface of the vehicle tire and electrically connecting the metallic cord to the electronic device.

20. The vehicle tire of claim 12 , wherein the electronic device is in contact with the inner surface of the vehicle tire, and further comprising an occlusive barrier covering the electricity storage device, the occlusive barrier connected to the inner surface.

Assignees

• Bridgestone Americas Tire Operations Llc

Inventors

• Wei Terence E
• Barr Jason R
• Sams Thomas A
• Doraiswamy Srikrishna
• Hanchin Timothy J

Classifications

• B60C19/08

  Electric-charge-dissipating arrangements · CPC title

• B60C23/041 Primary

  Means for supplying power to the signal- transmitting means on the wheel · CPC title

• H02K7/088

  radially supporting the rotor directly · CPC title

• H02K5/24

  specially adapted for suppression or reduction of noise or vibrations · CPC title

• H02K7/1846 Primary

  structurally associated with wheels or associated parts (dynamos arranged in the wheel hub of cycles B62J6/12) · CPC title