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Inductive Charging of a hybrid or electric vehicle

IP.com Disclosure Number: IPCOM000246896D
Publication Date: 2016-Jul-13
Document File: 10 page(s) / 93K

Publishing Venue

The IP.com Prior Art Database

Abstract

A method of automatically charging a hybrid or electric vehicle (1), which hybrid vehicle (1) includes electrical energy storing batteries (7), an electric motor (13), at least one brake (44), a gearbox (43) and equipment (5) for inductive charging of the batteries (7), and wherein charging of said hybrid vehicle (1) is initiated when the vehicle (1) is positioned on a surface arranged for charging at an inductive charging station. The method includes automatically applying (204) the brake (44), such as a parking brake, or other brake, especially an electronically controlled brake, of the vehicle (1) when the charging is initiated (205). The method especially comprises: - monitoring (203) the gearbox (43) and only allowing initiation of charging (205) when the gearbox (43) is in the neutral.

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Title: Inductive Charging of a hybrid or electric vehicle

Technical Field

The present invention relates to electric charging of electric or hybrid vehicles, especially land motor vehicles.

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Background and Prior Art

When electric vehicles, such as hybrid vehicles, are charged it is important that the vehicles remain stationary during charging. At the same time, it is desirable to utilize charging means whenever possible. Electric/hybrid vehicles may be

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charged by connecting a charging cable supplying AC or DC to the vehicle, but may also be wirelessly charged using inductive charging. It is desirable to make it easy for the driver to initiate a charging process, but also important that the driver does not forget to initiate charging. In addition, it is important that a vehicle that is charged does not roll or drive away.

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Published patent application US 2012/0203410 describes a system for inductively charging vehicles. This system include a parking aid configured to position an electric vehicle in an appropriate position in the vicinity of an inductive charging station (see abstract and claim 1 in US 2012/0203410). A

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charging process is subsequently initiated when the wheels of the electric vehicle stops. A parking brake of the electric vehicle is automatically activated. By automatic applying of a parking brake, the system of US 2012/0203410 counteracts rolling away of the vehicle during charging. However, the system of US 2012/0203410 is complicated in requiring an automatic parking aid, that

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relies on features of the charging station, and may not be used in other types of charging stations.

There is therefore a need in improving charging of electric/hybrid vehicles by means of induction, bearing in mind the problems of the driver forgetting to

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initiate charging. The charging system and the charging process should be simple, and configured to avoid roll away or drive away for example by ensuring


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application of a brake, such as a parking brake, and so on. At the same time, charging should only be initiated when desirable, and not be initiated by mistake.

Summary of Invention

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An aim of the invention is to provide a method and a system for automatic charging of a vehicle, requiring no user initiation, but at the same time provide a safe and secure charging process. An aim is also to provide such a method and system that can provide an easily stopping or inactivation of the charging process when the vehicle should leave the charging station.

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In order to accomplish these aims the present invention provides a method for automatically charging a hybrid vehicle, or electric vehicle, which method includes automatically applying a brake of the vehicle and automatically initiating charging without confirmation from the user, or driver.

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Brief Description of Drawings

Figure 1 illustrates parts of an electric system, including an electronic control system, of a hybrid or electric vehicle;

Figure 2 ill...