COIL PRINTED CIRCUIT BOARD, POWER RECEPTION MODULE, BATTERY UNIT AND POWER RECEPTION COMMUNICATION MODULE

• US 20160094082A1
• Filed: 04/03/2014
• Published: 03/31/2016
• Est. Priority Date: 05/13/2013
• Status: Active Grant

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: OOKAWA, Tadao, TANI, Emiko, MATSUTOMI, Akihito, MASUDA, Shotaro
• Granted Patent: US 9,843,216 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 2027/2809 on stacked layers
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• 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 7/0042 characterised by the mechanical construction
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A first coil portion is formed on a first coil region of an upper surface, and a second coil portion is formed on a lower surface, of an insulating layer. A second terminal is formed at a position outside of the first coil region. One or plurality of intersection regions in which a path extending from an inner end of the first coil portion to the second terminal intersects with the first coil portion are provided on the upper surface. The first coil portion is parted in each intersection region. A second lead portion passes between one and the other portions of the first coil portion parted in each intersection region and extends from the inner end of the first coil portion to the second terminal. The first and second coil portions are connected in parallel to each other via a plurality of through holes formed in the insulating layer.

Claims

1. A coil printed circuit board comprising:

a first insulating layer having first and second surfaces that are opposite to each other;

a first coil portion spirally formed in a first region on the first surface of the first insulating layer;

a second coil portion spirally formed in a second region on the second surface of the first insulating layer;

a first terminal formed outside of the first region on the first surface or outside of the second region on the second surface and is electrically connected to an outer end of the first coil portion; and

a second terminal formed outside of the first region on the first surface or outside of the second region on the second surface, wherein

the first and second coil portions are electrically connected in parallel to each other,

one or plurality of intersection regions in which a path extending from an inner end of the first coil portion to outside of the first region intersects with the first coil portion on the first surface,

the first coil portion is parted in each intersection region,

a lead portion is formed on the first surface to extend from the inner end of the first coil portion to outside of the first region on the path,

the lead portion is arranged to pass between one and another portions of the first coil portion parted in each intersection region,

the second terminal is electrically connected to the lead portion outside of the first region,

the first insulating layer has first and second through holes in each intersection region, and

the one and other portions of the first coil portion parted in each intersection region are electrically respectively connected to the second coil portion via the first and second through holes.

2. The coil printed circuit board according to claim 1, wherein the first insulating layer has a third through hole between the inner end of the first coil portion and an inner end of the second coil portion, and the inner end of the first coil portion and the inner end of the second coil portion are electrically connected to each other via the third through hole.

3. The coil printed circuit board according to claim 1, wherein the first insulating layer has a fourth through hole between the outer end of the first coil portion and an outer end of the second coil portion, and the outer end of the first coil portion and the outer end of the second coil portion are electrically connected to each other via the fourth through hole.

4. The coil printed circuit board according to claim 1, wherein the lead portion has a width larger than the first coil portion.

5. The coil printed circuit board according to claim 1, comprising:

one or plurality of second insulating layers respectively having third and fourth surfaces that are opposite to each other; and

a third coil portion spirally formed in a third region on the fourth surface of each second insulating layer, wherein

the third coil portion is electrically connected in parallel to the second coil portion,

each second insulating layer is laminated on the second surface of the first insulating layer or the fourth surface of another second insulating layer such that the third surface is closer to the second surface than the fourth surface and has fifth and sixth through holes formed at positions respectively overlapping with the first and second through holes of the first insulating layer,

the first terminal is formed outside of the first region on the first surface or outside of the third region on the fourth surface of the second insulating layer provided at a position farthest from the first insulating layer,

the second terminal is formed outside of the first region on the first surface or outside of the third region on the fourth surface of the second insulating layer provided at a position farthest from the first insulating layer,

the one portion of the first coil portion parted in each intersection region is electrically connected to the third coil portion of each second insulating layer via the first and fifth through holes, and

the other portion of the first coil portion parted in each intersection region is electrically connected to the third coil portion of each second insulating layer via the second and sixth through holes.

6. The coil printed circuit board according to claim 1, wherein the first terminal and the second terminal are formed on the first surface.

7. The coil printed circuit board according to claim 1, wherein a slit extending in a circumferential direction is formed in at least part of the first and second coil portions.

8. A power reception module comprising the coil printed circuit board according to claim 1, wherein the first and second coil portions of the coil printed circuit board are configured to receive power sent by electromagnetic induction or magnetic resonance.

9. A battery unit comprising:

the power reception module according to claim 8;

a secondary battery; and

a charger configured to charge the secondary battery by power received by the power reception module.

10. A power reception communication module comprising the coil printed circuit board according to claim 1, wherein the first and second coil portions of the coil printed circuit board are configured to receive power sent by electromagnetic induction or magnetic resonance, one or plurality of reception coil portions are formed on at least one surface of the first surface and the second surface of the first insulating layer of the coil printed circuit board, and each reception coil portion is configured to receive a signal sent by wireless communication.

11. A power reception communication module comprising the coil printed circuit board according to claim 5, wherein the first, second and third coil portions of the coil printed circuit board are configured to receive power sent by electromagnetic induction or magnetic resonance, one or plurality of reception coil portions are formed on at least one surface of the first and second surfaces of the first insulating layer and the third and the fourth surfaces of the one or plurality of second insulating layers of the coil printed circuit board, and each reception coil portion is configured to receive a signal sent by wireless communication.