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SG10201708902RA - Wireless Charging System With Object Detection - Google Patents

Wireless Charging System With Object Detection

Info

Publication number
SG10201708902RA
SG10201708902RA SG10201708902RA SG10201708902RA SG10201708902RA SG 10201708902R A SG10201708902R A SG 10201708902RA SG 10201708902R A SG10201708902R A SG 10201708902RA SG 10201708902R A SG10201708902R A SG 10201708902RA SG 10201708902R A SG10201708902R A SG 10201708902RA
Authority
SG
Singapore
Prior art keywords
wireless power
output circuit
circuitry
measurement
signals
Prior art date
Application number
SG10201708902RA
Inventor
K Patel Bharat
Moussaoui Zaki
P Pandya Manisha
J Russell Antoin
Original Assignee
Apple Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Apple Inc filed Critical Apple Inc
Publication of SG10201708902RA publication Critical patent/SG10201708902RA/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

PSG124 of the Disclosure Wireless Charging System With Detection A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using an output circuit that includes a wireless power transmitting coil. Measurement circuitry is coupled to the output circuit to help determine whether the wireless power receiving device is present and ready to accept transmission of wireless power. The measurement circuitry includes a measurement circuit that is coupled to the output circuit and that measures signals while oscillator circuitry supplies the output circuit with signals at a probe frequency. The measurement circuitry also includes a measurement circuit that is coupled to the output circuit and that measures signals while the oscillator circuitry sweeps signals applied to the output circuit between a first frequency and a second frequency to detect sensitive devices such as radio-frequency identification devices. Impulse response circuitry in the measurement circuitry is used to make inductance and Q factor measurements. [Figure 3]
SG10201708902RA 2017-02-02 2017-10-30 Wireless Charging System With Object Detection SG10201708902RA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762453850P 2017-02-02 2017-02-02
US201762526285P 2017-06-28 2017-06-28

Publications (1)

Publication Number Publication Date
SG10201708902RA true SG10201708902RA (en) 2018-09-27

Family

ID=62980802

Family Applications (1)

Application Number Title Priority Date Filing Date
SG10201708902RA SG10201708902RA (en) 2017-02-02 2017-10-30 Wireless Charging System With Object Detection

Country Status (5)

Country Link
US (2) US10530191B2 (en)
KR (2) KR102224419B1 (en)
CN (2) CN110268598B (en)
SG (1) SG10201708902RA (en)
WO (1) WO2018144392A1 (en)

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Also Published As

Publication number Publication date
CN110268598B (en) 2020-10-27
US11462950B2 (en) 2022-10-04
US10530191B2 (en) 2020-01-07
CN112467893A (en) 2021-03-09
WO2018144392A1 (en) 2018-08-09
KR20190109494A (en) 2019-09-25
KR102161391B1 (en) 2020-09-29
KR20200113012A (en) 2020-10-05
US20180219430A1 (en) 2018-08-02
US20200106307A1 (en) 2020-04-02
KR102224419B1 (en) 2021-03-05
CN110268598A (en) 2019-09-20

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