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Power transmission control device, power transmitting device, electronic instrument, and non-contact power transmission system

A control device and power transmission technology, applied in circuit devices, electromagnetic wave systems, battery circuit devices, etc., can solve problems such as difficulty in judgment, achieve less pulse width detection, stable foreign object detection, and achieve the effect of more variation

Active Publication Date: 2009-05-20
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the technology of this patent document 1, although the detection circuit of the primary side detects the eddy current loss or the like caused by foreign objects, there is a problem that it is difficult to judge whether the load on the power receiving side is normal in the detection circuit. The load or the false load caused by foreign matter

Method used

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  • Power transmission control device, power transmitting device, electronic instrument, and non-contact power transmission system
  • Power transmission control device, power transmitting device, electronic instrument, and non-contact power transmission system
  • Power transmission control device, power transmitting device, electronic instrument, and non-contact power transmission system

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Embodiment Construction

[0057] Preferred embodiments of the present invention will be described in detail below. In addition, the embodiments described below do not unreasonably limit the content of the present invention described in the protection scope of the present invention, and not all the configurations described in the embodiments are essential technical features of the present invention.

[0058] 1. Electronic equipment

[0059] figure 1 (A) shows an example of electronic equipment to which the contactless power transmission method of this embodiment is applied. A charger 500 (cradle, cradle) as one of electronic devices has a power transmission device 10 . Furthermore, a mobile phone 510 as one of electronic devices has a power receiving device 40 . Furthermore, mobile phone 510 includes display unit 512 such as LCD, operation unit 514 including buttons and the like, microphone 516 (voice input unit), speaker 518 (voice output unit), and antenna 520 .

[0060] In charger 500 , electric ...

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Abstract

A power transmission control device provided in a power transmitting device of a non-contact power transmission system includes a driver control circuit that controls a power transmitting driver that drives a primary coil, a load state detection circuit that detects a power-receiving-side load state, and a control circuit that controls the driver control circuit. The control circuit performs a foreign object detection process based on load state detection information from the load state detection circuit after receiving ID authentication information from a power receiving device, and starts normal power transmission to the power receiving device after performing the foreign object detection process.

Description

technical field [0001] The invention relates to a power transmission control device, a power transmission device, electronic equipment and a non-contact power transmission system. Background technique [0002] In recent years, non-contact power transmission (non-contact power transmission) that enables power transmission without contact of metal parts by using electromagnetic induction has attracted attention. As application examples of this non-contact power transmission, charging of mobile phones and household appliances (for example, handsets of telephones) has been proposed. [0003] As a prior art of non-contact power transmission, there is Patent Document 1. In this patent document 1, the peak value of the induced voltage signal of the primary coil is monitored by the primary side (power transmitting side) and compared with a predetermined threshold voltage to detect the load state of the secondary side (power receiving side), Realize the detection of foreign objects...

Claims

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Application Information

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IPC IPC(8): H02J17/00H02J7/00G06F21/44
CPCH02J7/025H02J7/00045H02J7/0044H02J50/60H02J50/10H02J50/80H02J50/90H02J50/12
Inventor 上条贵宏长谷川稔依田健太郎曾我部治彦大西幸太神山正之盐崎伸敬
Owner SAMSUNG ELECTRONICS CO LTD
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