NON-CONTACT CHARGING MODULE AND RECEPTION-SIDE AND TRANSMISSION-SIDE NON-CONTACT CHARGING APPARATUSES USING THE SAME

• US 20120187904A1
• Filed: 01/23/2012
• Published: 07/26/2012
• Est. Priority Date: 01/26/2011
• Status: Active Grant

• Current Assignee: Sovereign Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Hidaka, Akio, Tabata, Kenichiro, Nishino, Tokuji
• Granted Patent: US 8,547,058 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H01F 38/10 Ballasts, e.g. for discharge lamps
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

It is an object to provide a non-contact charging module that uses a magnet included in a counterpart-side non-contact charging module or does not use the magnet when aligning with the counterpart-side non-contact charging module is performed. An L value of a coil that is provided in the non-contact charging module is not changed. This non-contact charging module includes a planar coil portion where electrical lines are wound and a magnetic sheet that places a coil surface of the planar coil portion and faces the coil surface of the planar coil portion, and in the magnetic sheet, a hole portion is provided at the position corresponding to a hollow portion of the planar coil portion.

Claims

1. A non-contact charging module that has a case where using a magnet included in a counterpart-side non-contact charging module or a case where not using the magnet, when aligning with the counterpart-side non-contact charging module is performed, the non-contact charging module comprising:

a planar coil portion where electrical lines are wound; and

a magnetic sheet that places a coil surface of the planar coil portion and faces the coil surface of the planar coil portion,

wherein a hole portion is provided at the position corresponding to a hollow portion of the planar coil portion, in the magnetic sheet.

2. The non-contact charging module according to claim 1, wherein the hole portion is a through-hole.

3. The non-contact charging module according to claim 1, wherein the depth of the hole portion is 40 to 60% of the thickness of the magnetic sheet.

4. The non-contact charging module according to claim 1, wherein the electrical lines of the planar coil portion are wound in a circular shape.

5. The non-contact charging module according to claim 1, wherein a shape of a top surface of the hole portion is the same as a shape of the hollow portion of the planar coil portion.

6. The non-contact charging module according to claim 5, wherein all of ends of the hole portion have the same distance from ends of the hollow portion of the planar coil portion.

7. The non-contact charging module according to claim 1, wherein the hole portion is formed to be bigger than the magnet.

8. The non-contact charging module according to one of claim 1, wherein the center of the hole portion is matched with the center of a center portion of the planar coil portion.

9. The non-contact charging module according to claim 1, wherein the electrical lines of the planar coil portion are wound in a rectangular shape.

10. A reception-side non-contact charging apparatus comprising the step of including the non-contact charging module according to claim 1.

11. A transmission-side non-contact charging apparatus comprising the step of including the non-contact charging module according to claim 1.