Methods for forming shield materials onto inductive coils
First Claim
Patent Images
1. A shield for an annular coil comprising:
- an outer portion contoured to an outer sidewall of the annular coil;
an inner portion contoured to an inner sidewall of the annular coil; and
a top portion contoured to a top portion of the annular coil;
wherein the top portion couples the inner portion to the outer portion.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods of and systems for directing flux from a transmit coil to a receive coil within an inductive power transfer system are disclosed. For example, a transmit coil can be shielded with a contoured shield made from a ferromagnetic material. The contoured shield can contour to several surfaces of the transmit coil so as to define a single plane through which flux is directed to the receive coil.
79 Citations
22 Claims
-
1. A shield for an annular coil comprising:
-
an outer portion contoured to an outer sidewall of the annular coil; an inner portion contoured to an inner sidewall of the annular coil; and a top portion contoured to a top portion of the annular coil; wherein the top portion couples the inner portion to the outer portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. An inductive charging system comprising:
an electronic device comprising; a rechargeable battery; a receive coil electrically associated with the rechargeable battery; and a shield contoured over at least two surfaces of the receive coil defining a receiving area of the receive coil for concentrating magnetic flux therethrough. - View Dependent Claims (16, 17)
-
18. A method of manufacturing a contoured shield for an electromagnetic coil, the method comprising:
-
forming a shield sheet comprising a plurality of petals; placing the shield sheet on a surface of the electromagnetic coil; and folding each of the plurality of petals to contour to the surface of the electromagnetic coil. - View Dependent Claims (19, 20, 21, 22)
-
Specification