Inductive coupler having a tactile feel

• US 5,506,489 A
• Filed: 04/29/1994
• Issued: 04/09/1996
• Est. Priority Date: 04/29/1994
• Status: Expired due to Term

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: Hughes Aircraft Company (Rtx Corporation)
• Inventors: Woody, George R., Abbott, Russell M.
• Primary Examiner(s): KINCAID, KRISTINE LYNN
• Application Number:
  US08/237,562
• Time in Patent Office: 711 Days
• Field of Search: 320/2, 320/21
• US Class Current: 320/108
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/34 Plug-like or socket-like devices specially adapted for contactless inductive charging of electric vehicles positioning means for charging devices using inductive energy transfer B60L53/38
• 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 50/70 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
• 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
• CPC Class Codes: Y10S 336/02 Separable

Abstract

An inductive charging apparatus for use in charging a battery of an electric vehicle, for example, that provides for a tactile feel. The inductive charging apparatus comprises an inductive charging coupler and a charge port disposed in the electric vehicle and coupled to the battery of the electric vehicle. The charging coupler comprises a center magnetic core, and a primary winding disposed around the center magnetic core. A charger cable is coupled between the primary winding and an external power source for coupling energy to the charging coupler. A coupler housing is provided that has two mating coupler halves that are configured to provide a handle, and the mating coupler halves enclose the primary winding and the center magnetic core, and secures the charger cable in the handle. A plurality of indentations are formed in the side of the housing. The charge port has an opening into which the inductive charging coupler is inserted. The charge port comprises a ferrite core and a secondary winding disposed adjacent to the ferrite core that is coupled to the battery of the electric vehicle. A plurality of flexible fingers protrude from the opening that engage the indentations in the side of the housing of the coupler when the coupler is inserted into the charge port.

Claims

1. Inductive charging apparatus for use in charging a battery, said apparatus comprising:

an inductive charging coupler that comprises;

a first magnetic core;

a primary winding disposed around the first magnetic core;

a charger cable coupled between the primary winding and a power source for coupling energy to the charging coupler;

a coupler housing enclosing the primary winding and the first magnetic core;

a conductive plastic strip disposed along an exterior portion of the coupler; and

a plurality of indentations formed in the side of the housing; and

a charge port that comprises;

a second magnetic core;

a secondary winding disposed adjacent to the second core that is coupled to the battery;

an opening into which the inductive charging coupler is inserted; and

a plurality of flexible fingers for engaging the indentations in the side of the housing of the coupler when the coupler is inserted into the charge port.

2. The inductive charging apparatus of claim 1 wherein the battery is disposed in an electric vehicle, and wherein energy is coupled from the power source to the battery of the vehicle by the inductive charging apparatus.

3. The inductive charging apparatus of claim 1 wherein the coupler housing comprises two mating coupler halves that are configured to provide a handle, and wherein the mating coupler halves enclose the primary winding and the magnetic core, and secures the charger cable in the handle.

4. The inductive charging apparatus of claim 1 wherein the plurality of flexible fingers protrude from the opening in the charge port and engage the indentations in the side of the housing of the coupler when the coupler is inserted into the charge port.

5. Inductive charging apparatus for use in charging a battery of an electric vehicle, said apparatus comprising:

an inductive charging coupler that comprises;

a center magnetic core;

a primary winding disposed around the center magnetic core;

a charger cable coupled between the primary winding and an external power source for coupling energy to the charging coupler;

a coupler housing that has two mating coupler halves that are configured to provide a handle, and wherein the mating coupler halves enclose the primary winding and the center magnetic core, and secure the charger cable in the handle;

a conductive plastic strip disposed along an exterior portion of the coupler between the handle and the primary winding; and

a plurality of indentations formed in the side of the housing;

a charge port disposed in the electric vehicle that comprises;

a ferrite core;

a ferrite winding disposed adjacent to the ferrite core that is coupled to the battery of the electric vehicle;

an opening into which the inductive charging coupler may be inserted; and

a plurality of flexible fingers that protrude from the opening and that engage the indentations in the side of the housing of the coupler when the coupler is inserted into the charge port.