Device for inductively charging an electrical storage unit

Patent metadata

Field	Value
Publication number	US-10065516-B2
Application number	US-201515323170-A
Country	US
Kind code	B2
Filing date	Jun 22, 2015
Priority date	Jul 2, 2014
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

The invention relates to a device ( 1 ) for inductively charging an electrical storage unit, in particular of a motor vehicle, comprising a stationary primary coil ( 2 ) and a secondary coil that is or can be associated with the motor vehicle, wherein at least one resonance capacitor ( 7 ) is associated with the primary coil ( 2 ) and the secondary coil, respectively. According to the invention, at least one of the resonance capacitors ( 7 ) is designed to at least substantially surround the coil ( 2 ) in question or to at least substantially be surrounded by the coil ( 2 ) in question.

First claim

The invention claimed is:

1. A device for inductively charging an electrical storage unit comprising a stationary primary coil ( 2 ) and a secondary coil that is connected with the electrical storage unit and at least one resonance capacitor ( 7 ) connected with the primary coil ( 2 ) and the secondary coil, respectively, wherein at least one of the resonance capacitors ( 7 ) is configured to surround the coil ( 2 ) in question or be surrounded by the coil ( 2 ) in question,
further characterized in that contact connections ( 7 ′, 7 ″) of the respective resonance capacitor ( 7 ) form a coil winding, which has the opposite polarity or the same polarity compared with the winding of the connected coil.

2. The device according to claim 1 , characterized in that the resonance capacitor ( 7 ) has the form of the coil ( 2 ) in question.

3. The device according to claim 1 , characterized in that the respective resonance capacitor ( 7 ) is a film capacitor.

4. The device according to claim 1 , characterized in that the respective resonance capacitor ( 7 ) is disposed together with the coil ( 2 ) connected therewith in a common housing ( 6 ).

5. The device according to claim 1 , characterized in that at least one screening element ( 10 ) is connected with the respective resonance capacitor ( 7 ) and the connected coil ( 2 ).

6. The device according to claim 5 , characterized in that the screening element ( 10 ) is a screening plate.

7. The device according to claim 6 , characterized in that the resonance capacitor ( 7 ) and the connected coil ( 2 ) are disposed on one side of the screening plate.

8. The device according to claim 6 , characterized in that some parts of the screening plate lie between the resonance capacitor and the connected coil ( 2 ).

9. The device according to claim 1 , characterized in that the respective resonance capacitor ( 7 ) comprises two capacitors ( 12 , 13 ).

10. The device according to claim 1 , wherein the electrical storage unit is a motor vehicle.

Assignees

• Bosch Gmbh Robert

Inventors

• Schumann Philipp
• Eckhardt Juergen
• Blum Oliver

Classifications

• H02J50/70 Primary

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• B60L53/122 Primary

  Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil · CPC title

• H01F38/14 Primary

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

• B60M7/003

  for vehicles using stored power (e.g. charging stations) · CPC title

• H02J50/12

  of the resonant type · CPC title