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Method for wireless energy transmission from energy transmission device to consumer and wireless transmission device for carrying out method

A technology for transmitting equipment and energy transmission, applied in electrical components, circuit devices, etc., can solve the problems of energy transmission interference to electrical appliances, and can no longer ensure the reliability of wireless energy transmission systems, and achieve the effect of improving accuracy.

Pending Publication Date: 2020-06-12
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heating can be significant so that the operational reliability of the wireless energy transfer system can no longer be guaranteed
In addition, foreign objects can extract energy from the electromagnetic field, so that the energy transmission to the consumer is disturbed

Method used

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  • Method for wireless energy transmission from energy transmission device to consumer and wireless transmission device for carrying out method
  • Method for wireless energy transmission from energy transmission device to consumer and wireless transmission device for carrying out method
  • Method for wireless energy transmission from energy transmission device to consumer and wireless transmission device for carrying out method

Examples

Experimental program
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Embodiment Construction

[0036] figure 1 Shown is a wireless energy transfer system 10 in the form of an inductive charging system with a primary energy transmission device 14 designed as a charging device 12 and a battery pack 16 for a hand-held power tool (not shown) ) on the secondary side of the consumer 18. However, electrical consumer 18 can also be a rechargeable battery that is permanently integrated in the hand-held power tool. As mentioned at the outset, however, the invention is not limited to inductive charging systems for hand-held power tools and their accumulators or accumulator packs. Rather, the invention can be applied to different types of wireless energy transmission and energy sending and receiving devices, in which foreign object detection is meaningful or necessary. This may also include optical, acoustic, capacitive, or air flow based wireless energy transfer, among others.

[0037] figure 1 Rechargeable battery pack 16 is shown positioned on the upper side of housing 20 of...

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Abstract

The invention proposes a method for wireless, in particular inductive, energy transmission from an energy transmission device (14) to a consumer (18), wherein in at least one method step, the energy transmission from the energy transmission device (14) to the consumer (18) is interrupted in connection with a foreign object detection. According to the invention, an iterative process for a frequencysweep in order to detect a local maximum of an actual quality (Qact,A(fres,A), Qact,n+1(fres)) of the wireless energy transmission, which is characteristic of a resonant frequency (fres,A, fres), isprovided in at least one method step (50).

Description

technical field [0001] The invention relates to a method for wireless—in particular inductive—energy transmission from an energy transmitting device to an electrical consumer, wherein, in at least one method step, a foreign object detection is interrupted Energy transmission from energy sending devices to consumers. Furthermore, the invention relates to a wireless energy transmission device, in particular an inductive charging device, for carrying out the method according to the invention. Background technique [0002] It is known to supply energy wirelessly to battery-operated handheld devices, such as toothbrushes, mobile radios or computers, as well as electrically driven handheld tools, measuring devices, gardening equipment and the like. In the future, the energy stores of electrically driven vehicles (for example electric bicycles, electric scooters or cars, buses, trucks, etc.) will also be charged wirelessly. Another application case of wireless energy transmission...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12
CPCH02J50/12H02J50/60
Inventor M·贡达J·马克D·克鲁佩热维奇
Owner ROBERT BOSCH GMBH
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