COIL UNIT

• US 20190054828A1
• Filed: 08/14/2018
• Published: 02/21/2019
• Est. Priority Date: 08/15/2017
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Doi, Taiga
• Granted Patent: US 10,737,579 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/2871 Pancake coils
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/363 made of electrically conductive material
• 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 50/12 of the resonant type
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• 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

A coil unit includes a case (an upper cover) made of a resin, the case including an attachment surface to be attached to a case of a power storage apparatus, a metal plate provided in the case, a coil located opposite to the attachment surface with respect to the metal plate, and a metal member arranged to surround a space portion located between the metal plate and the case (the upper cover). The metal member is formed integrally with the upper cover made of the resin.

Claims

1. A coil unit to be attached to an externally provided attachment target member, the coil unit comprising:

a case made of a resin, the case including an attachment surface to be attached to the attachment target member;

a metal plate provided in the case;

a coil located opposite to the attachment surface with respect to the metal plate; and

a metal member arranged between the metal plate and the attachment surface and formed integrally with the case,

the metal member being arranged to surround a space located between the metal plate and the case.

2. The coil unit according to claim 1, wherein

the case is attached to the attachment target member with a fastening member,

the attachment surface of the case is provided with an insert portion where the metal member is provided and a fastening portion pressed against the attachment target member by fastening force from the fastening member while the case is attached to the attachment target member, and

the insert portion of the attachment surface protrudes outward relative to the fastening portion of the attachment surface while the case is not attached to the attachment target member.

3. The coil unit according to claim 2, wherein

the attachment target member is made of a metal, and

the metal member is exposed through the case in the insert portion of the attachment surface.