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Coil unit for a transmission arrangement for inductive transmission of energy

  • US 10,290,420 B2
  • Filed: 12/15/2015
  • Issued: 05/14/2019
  • Est. Priority Date: 12/16/2014
  • Status: Active Grant
First Claim
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1. A coil unit for a transmission arrangement for inductive transmission of energy, comprising:

  • at least one coil having an electrical conductor;

    a flux management unit configured to manage a magnetic flux which occurs during operation of the at least one coil, said flux management unit being arranged in a first plane behind the at least one coil, when viewed along a coil axis of the at least one coil, and including at least two flux management sectors and at least one channel between the at least two flux management sectors;

    a housing including a housing base and a housing lid configured for attachment to the housing base, said housing at least partially accommodating the at least one coil and the flux management unit; and

    at least one supporting element arranged between the housing base and the housing lid and configured such that a projection of the at least one supporting element along the coil axis is congruent with or lies within an extent of the flux management unit, said at least one supporting element being arranged such that a force acting on the housing lid is divertible via the at least one supporting element past the at least one coil and the at least two flux management sectors to the housing base,wherein the flux management unit has an inner opening with an inner concave circular surface and an outer periphery with an outer convex circular surface, said supporting element has an inner concave circular surface and an outer convex circular surface, and said supporting element is arranged relative to said flux management unit so that either said outer convex circular surface of the supporting element is in direct contact with said inner concave circular surface of said flux management unit, or said inner concave circular surface of said supporting element is in direct contact with said outer convex circular surface of said flux management unit, or both said outer convex circular surface and said inner concave circular surface of said supporting element are in direct contact with said inner concave circular surface and said outer convex surface of said flux management unit correspondingly over a whole circumference.

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