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Device for inductively charging an electric vehicle, and method for detecting electrically conductive foreign bodies in such a device

An inductive charging, electric vehicle technology, applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of human and environmental hazards, power loss of electric energy storage, etc.

Inactive Publication Date: 2019-07-26
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this causes a power loss during charging of the electrical energy store and also constitutes a danger to humans and the environment

Method used

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  • Device for inductively charging an electric vehicle, and method for detecting electrically conductive foreign bodies in such a device
  • Device for inductively charging an electric vehicle, and method for detecting electrically conductive foreign bodies in such a device
  • Device for inductively charging an electric vehicle, and method for detecting electrically conductive foreign bodies in such a device

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Embodiment Construction

[0036]In the following description of embodiments of the invention, identical or similar elements are identified with the same reference numerals, wherein a repeated description of these elements in individual cases is omitted. The figures show only schematically the subject-matter of the invention.

[0037] exist figure 1 An electric vehicle 17 is schematically shown in , which is parked above a device for inductive charging of the electric vehicle 17 . Such devices are also referred to as inductive charging stations. The device for inductively charging an electric vehicle 17 is located on the ground 15 below the electric vehicle 17 and comprises a primary coil 11 for generating a main magnetic field 10 .

[0038] The secondary coil 12 is mounted on the base plate 16 of the electric vehicle 17 . The electric vehicle 17 is parked here in such a way that the secondary coil 12 is arranged as far as possible above the primary coil 11 . The main magnetic field 10 generated by ...

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Abstract

The invention relates to a device for inductively charging an electric vehicle (17). The device includes a primary coil (11) for generating a main magnetic field (10) and a sensor coil system (30) fordetecting electrically conductive foreign bodies, having at least one sensor coil. The sensor coils are arranged and connected relative to the primary coil (11) such that no voltage is induced by themain magnetic field (10) if interference magnetic fields generated by foreign bodies are absent in the sensor coil system (30), and a voltage is induced by the main magnetic field (10) if an interference magnetic field generated by a foreign body is present in the sensor coil system (30). The invention also relates to a method for detecting electrically conductive foreign bodies in a device according to the invention, wherein a main magnetic field (10) is generated by means of the primary coil (11), a voltage induced in the sensor coil system (30) by the main magnetic field (10) is measured,and an electrically conductive foreign body is detected if the measured voltage exceeds a specified threshold.

Description

technical field [0001] The invention relates to a device for inductively charging an electric vehicle, said device comprising: a primary coil for generating a main magnetic field and a sensor coil system for detecting conductive foreign objects, wherein the sensor coil system has at least one sensor coil. The invention also relates to a method for detecting conductive foreign objects in a device according to the invention. Background technique [0002] Electric vehicles usually have an electrical energy store, such as a traction battery, which can store energy for the electric drive. If such an electrical energy store is completely or partially discharged, it can be recharged at a corresponding charging station. For this purpose, charging stations are known in which electrical energy is transferred to an electrical energy store by means of a charging cable. [0003] Charging stations are also known in which electrical energy is transmitted inductively, ie wirelessly, to a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/12B60L53/124H02J7/02H02J50/10H02J50/60
CPCH02J50/10H02J50/60Y02T10/7072Y02T90/14B60L53/124H02J2310/48Y02T10/70Y02T90/12B60Y2200/91B60L53/38
Inventor G.克赖因M.布罗伊希勒P.舒曼
Owner ROBERT BOSCH GMBH
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