Contactless inductive energy transmission device and method

Patent metadata

Field	Value
Publication number	US-10984947-B2
Application number	US-201716338040-A
Country	US
Kind code	B2
Filing date	Oct 5, 2017
Priority date	Oct 10, 2016
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

A contactless inductive energy transmission device includes a primary and a secondary each having at least one coil. The coils are inductively coupled via an air gap. The primary and the secondary each also have a data transmission unit for the transmission of data via the air gap.

First claim

The invention claimed is:

1. A device for contactless inductive energy transmission, comprising
(a) a primary portion including a coil and a data transmission unit;
(b) a secondary portion including a coil and a data transmission unit, said secondary coil being inductively coupled via an air gap with said primary coil to transmit energy from said primary portion to said secondary portion, said primary data transmission unit and said secondary transmission unit transmitting data via said air gap, and
wherein each data transmission unit includes at least one transmitting element, at least one receiving element, and a light-conducting element having a cylindrical configuration and a first light entry or exit surface having a planar configuration facing said transmitting and receiving elements, respectively, and a second light entry or exit surface having a concave configuration facing said air gap.

2. The device of claim 1 , in which data is transmitted optically via said air, gap.

3. The device of claim 1 , wherein each of said primary data transmission unit and said secondary unit are centrally and concentrically arranged relative to said primary and secondary coils, respectively.

4. The device of claim 2 , Wherein each data transmission unit includes a central transmitting element surrounded by a plurality of receiving elements.

5. A method for operating a contactless inductive energy transmission device for transmitting energy from a coil of a primary portion to a coil of a secondary portion via an air gap, wherein during the inductive energy transmission from the primary portion to the secondary portion, optical transmission of data takes place between the primary portion and the secondary portion via the air gap via data transmission units which are integrated in the primary portion and the secondary portion, and wherein each data transmission unit includes at least one transmitting element, at least one receiving element, and a light-conducting element having a cylindrical configuration and a first light entry or exit surface having a planar configuration facing said transmitting and receiving elements, respectively, and a second light entry or exit surface having a concave configuration facing said air gap.

6. The method of claim 5 , wherein the transmission of data takes place bi-directionally in a half or full duplex procedure.

Assignees

• Weidmueller Interface Gmbh & Co Kg

Inventors

• Grünberg Olaf
• Neu Marc

Classifications

• H04B5/266

  One coil at each side, e.g. with primary and secondary coils · CPC title

• H04B5/72

  for local intradevice communication · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H01F38/14 Primary

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• G02B6/24

  Coupling light guides · CPC title