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Object detection device for inductive charging system

A technology of inductive charging and object detection, which is applied in measuring devices, circuit devices, radio wave measuring systems, etc., and can solve problems such as fire hazards

Pending Publication Date: 2022-07-29
BRUSA ELECTRONICS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foreign objects such as coins, paper clips, and even yogurt jars with aluminum lids will heat up in the magnetic field, creating a fire hazard

Method used

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  • Object detection device for inductive charging system
  • Object detection device for inductive charging system
  • Object detection device for inductive charging system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] like figure 1 As shown, an inductive charging system (ICS) 10 includes a ground pad module (GPM) 12 that includes a coil 14 and a drive circuit 16 coupled to an electrical power supply 18 . The drive circuit 16 conditions the power signals from the supply 18 to apply these power signals to the coil 14 in a suitable form. Coil 12 is driven to generate magnetic field 20 by applying the power signal described above (denoted as current I and voltage V).

[0033] The power supply 18 may be, for example, a domestic voltage supply at 110V or 220V. Such household installations will be limited to 2kW to 3kW, which means that charging the battery typically takes several hours. A larger power supply, such as a polyphase supply at 415 volts or higher, enables charging to be completed faster. In a commercial or industrial implementation, greater power (and thus faster charging) may be provided.

[0034] The size and form of the floor pad module 12 depends on the technical requir...

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PUM

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Abstract

In an inductive charging system, energy is transferred through a magnetic field. An object detection apparatus for an inductive charging system includes: a transmitter for transmitting a signal; and a receiver having a field of view comprising a majority of the magnetic field for receiving reflections of the signal within the field of view. The signal processor checks a characteristic of the received signal to identify a hazardous condition associated with the magnetic field. By converting the received signal into a frequency domain signal, a hazardous condition may be identified according to the form of the frequency domain signal. An object detection device is suitable for a charging device of an electric vehicle.

Description

technical field [0001] An object detection device for an inductive charging system. An inductive charging system including an object detection device. A method of detecting a hazardous condition in an object detection device. Background technique [0002] Wireless power transfer technologies are increasingly being used to transfer power from electrical power sources to devices ranging from small hand-held consumer electronic devices (such as mobile phones and tablets) that require several watts of power to electric vehicles that require several kilowatts of power . In addition to the convenience of not having to plug in a power device to supply power or recharge the battery, the absence of wires and cables makes desks and parking spaces clutter-free while reducing clutter, tripping, and electric shock hazards. There are many ways to transfer power wirelessly, including capacitive coupling and inductive coupling, both of which offer advantages over resistive (ie wired) cou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/60B60L53/124G01S13/04G01S13/56G01S13/88G01S13/00
CPCH02J50/60B60L53/124G01S13/04H02J50/80G01S13/003G01S13/886G01S13/56Y02T10/7072Y02T10/70Y02T90/14H02J50/10
Inventor 卢卡斯·伯赫勒保罗·隆巴尔多
Owner BRUSA ELECTRONICS AG