Contactless feed system and shield case for the same

• US 9,653,201 B2
• Filed: 08/21/2014
• Issued: 05/16/2017
• Est. Priority Date: 02/23/2012
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation), Yazaki Corporation
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation), Yazaki Corporation
• Inventors: Ookawa, Masamitsu, Taguchi, Noritaka, Kagami, Kazuyoshi, Horiuchi, Satoru, Ichikawa, Shinji
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): He, Fan
• Application Number:
  US14/465,226
• Publication Number:
  US 20140361635A1
• Time in Patent Office: 999 Days
• Field of Search: 336 84, 336 90
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/363 made of electrically conductive material
• CPC Class Codes: H01F 27/40 Structural association with built-in electric component, e.g. fuse
• 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 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

There is provided a shield case allowing efficient power delivery while ensuring environmental resistant such as strength and waterproof and provided a contactless feed system using the shield case.

A contactless feed system includes: a feed-side device installed in a fixed body; a receive-side device installed in a mobile body and fed electric power from the feed-side device in a contactless manner, and a shield case used in the feed-side device of the contactless feed system includes: a case open toward the receive-side device; a coil housed in an interior of the case; and a cover covering an opening of the case, wherein a load support member extending from a bottom surface of the case to an inner surface of the cover is provided inside the case.

Claims

1. A shield case used in a feed-side device of a contactless feed system, said contactless feed system including:

the feed-side device installed in a fixed body;

a receive-side device installed in a mobile body and fed electric power from the feed-side device in a contactless manner,

said shield case comprising;

a case open toward the receive-side device;

a coil housed in an interior of the case; and

a cover covering an opening of the case,

wherein a load support member extending from a bottom surface of the case to an inner surface of the cover is provided inside the case, and

the case includes a bottom plate and a shield member formed in a ring shape and having a bottom wall, a sidewall extending vertically from a peripheral edge of the bottom surface portion, and a top wall folded inward in a radial direction from an upper end of the sidewall portion.

2. The shield case used in the contactless feed system as claimed in claim 1, further comprising:

a coil hold member for holding the coil in the shield case,

wherein the coil hold member works as the load support member.

3. The shield case used in the contactless feed system as claimed in claim 2,

wherein the coil is formed in a polygonal shape, and

wherein the coil hold member includes a coil hold groove for supporting a straight portion of the polygonal shape of the coil.

4. The shield case used in the contactless feed system as claimed in claim 1, further comprising:

a capacitor connected to an end of the coil; and

a capacitor protective member arranged around the capacitor,

wherein the capacitor protective member works as the load support member.

5. The shield case used in the contactless feed system as claimed in claim 2, further comprising:

a capacitor connected to an end of the coil; and

a capacitor protective member arranged around the capacitor,

wherein the capacitor protective member works as the load support member.

6. The shield case used in the contactless feed system as claimed in claim 3, further comprising:

a capacitor connected to an end of the coil; and

a capacitor protective member arranged around the capacitor,

wherein the capacitor protective member works as the load support member.

7. The shield case used in the contactless feed system as claimed in claim 4,

wherein the capacitor protective member is formed in a horseshoe shape.

8. The shield case used in the contactless feed system as claimed in claim 5,

wherein the capacitor protective member is formed in a horseshoe shape.

9. The shield case used in the contactless feed system as claimed in claim 6,

wherein the capacitor protective member is formed in a horseshoe shape.

10. The shield case used in the contactless feed system as claimed in claim 1,

wherein the case includes a support member fitted into a concave portion of which three sides are surrounded by the bottom surface portion, the sidewall portion, and the top surface portion, and

wherein the shield member and the support member work as the load support member.

11. The shield case used in the contactless feed system as claimed in claim 10,

wherein the cover is fixed to the shield case by a screw penetrating the top surface portion and screwed with the support member.

12. A contactless feed system comprising:

a feed-side device installed in a fixed body;

a receive-side device installed in a mobile body and fed electric power from the feed-side device in a contactless manner,

wherein the shield case used in the contactless feed system as claimed in claim 1 is employed as the feed-side device.