A METHOD FOR A FOREIGN OBJECT DETECTION IN A CONTACTLESS CHARGING SYSTEM
A contactless power supply device (10) for a contactless charging system comprising a high frequency generator (11) for generating a high frequency waveform, an oscillation unit (12) with a primary coil (13) for generating an alternating flux and a control unit (14) for controlling operation of the...
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| creator | Tombelli, Fabio Blaszczyk, Pawel |
| description | A contactless power supply device (10) for a contactless charging system comprising a high frequency generator (11) for generating a high frequency waveform, an oscillation unit (12) with a primary coil (13) for generating an alternating flux and a control unit (14) for controlling operation of the high frequency generator (11). The output of the high frequency generator (11) is connected to the primary coil (13) of the oscillation unit (12) and the output of the control unit (14) is connected to the input of the high frequency generator (11). Furthermore, the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and the control unit (14) is configured to calculate the RMS values IRMS of the measured instantaneous values Imeas of alternating current, or to calculate the change rate didt of the measured instantaneous values Imeas of alternating current, wherein di - a first degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt - a first degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or to calculate a second derivative d2idt2 of the measured instantaneous values Imeas of alternating current, wherein d2i - a second degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt2 - a second degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or the control unit (14) is configured to measure instantaneous values Imeasof alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a con |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP4164090A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP4164090A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP4164090A13</originalsourceid><addsrcrecordid>eNrjZPBwVPB1DfHwd1Fw8w9ScASRrp7ufgr-Tl6uziEKLq4hQMrT30_B0w8o6-zvF-LoHOLjGhys4OzhGOTu6eeuEBwZHOLqy8PAmpaYU5zKC6W5GRTcXEOcPXRTC_LjU4sLEpNT81JL4l0DTAzNTAwsDRwNjYlQAgBl6yv0</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>A METHOD FOR A FOREIGN OBJECT DETECTION IN A CONTACTLESS CHARGING SYSTEM</title><source>esp@cenet</source><creator>Tombelli, Fabio ; Blaszczyk, Pawel</creator><creatorcontrib>Tombelli, Fabio ; Blaszczyk, Pawel</creatorcontrib><description>A contactless power supply device (10) for a contactless charging system comprising a high frequency generator (11) for generating a high frequency waveform, an oscillation unit (12) with a primary coil (13) for generating an alternating flux and a control unit (14) for controlling operation of the high frequency generator (11). The output of the high frequency generator (11) is connected to the primary coil (13) of the oscillation unit (12) and the output of the control unit (14) is connected to the input of the high frequency generator (11). Furthermore, the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and the control unit (14) is configured to calculate the RMS values IRMS of the measured instantaneous values Imeas of alternating current, or to calculate the change rate didt of the measured instantaneous values Imeas of alternating current, wherein di - a first degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt - a first degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or to calculate a second derivative d2idt2 of the measured instantaneous values Imeas of alternating current, wherein d2i - a second degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt2 - a second degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or the control unit (14) is configured to measure instantaneous values Imeasof alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the RMS values IRMS of the measured instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the change rate didt of the measured instantaneous values Imeas of alternating current, wherein di - a first degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt - a first degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the second derivative d2idt2 of the measured instantaneous values Imeas of alternating current, wherein d2i - a second degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt2 - a second degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), and said contactless power supply device (10) is configured to detect a foreign object between the power supply device (10) and a power receiver device of a contactless charging system such that instantaneous values Imeas of alternating current are measured, or the RMS values IRMS of alternating current are measured and/or calculated, or the change rate didt of the measured instantaneous values Imeas of alternating current is calculated, the second derivative d2idt2 of the measured instantaneous values Imeas of alternating current is calculated, and the foreign object is detected when the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value Ilimit of alternating current, or the measured and/or calculated RMS value IRMS of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the RMS value IRMS limit, or the calculated change rate didt of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the change rate didtlimit, or the calculated second derivative d2idt2 of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the second derivative d2idt2limit</description><language>eng ; fre ; ger</language><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION ; SYSTEMS FOR STORING ELECTRIC ENERGY</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230412&DB=EPODOC&CC=EP&NR=4164090A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230412&DB=EPODOC&CC=EP&NR=4164090A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Tombelli, Fabio</creatorcontrib><creatorcontrib>Blaszczyk, Pawel</creatorcontrib><title>A METHOD FOR A FOREIGN OBJECT DETECTION IN A CONTACTLESS CHARGING SYSTEM</title><description>A contactless power supply device (10) for a contactless charging system comprising a high frequency generator (11) for generating a high frequency waveform, an oscillation unit (12) with a primary coil (13) for generating an alternating flux and a control unit (14) for controlling operation of the high frequency generator (11). The output of the high frequency generator (11) is connected to the primary coil (13) of the oscillation unit (12) and the output of the control unit (14) is connected to the input of the high frequency generator (11). Furthermore, the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and the control unit (14) is configured to calculate the RMS values IRMS of the measured instantaneous values Imeas of alternating current, or to calculate the change rate didt of the measured instantaneous values Imeas of alternating current, wherein di - a first degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt - a first degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or to calculate a second derivative d2idt2 of the measured instantaneous values Imeas of alternating current, wherein d2i - a second degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt2 - a second degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or the control unit (14) is configured to measure instantaneous values Imeasof alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the RMS values IRMS of the measured instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the change rate didt of the measured instantaneous values Imeas of alternating current, wherein di - a first degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt - a first degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the second derivative d2idt2 of the measured instantaneous values Imeas of alternating current, wherein d2i - a second degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt2 - a second degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), and said contactless power supply device (10) is configured to detect a foreign object between the power supply device (10) and a power receiver device of a contactless charging system such that instantaneous values Imeas of alternating current are measured, or the RMS values IRMS of alternating current are measured and/or calculated, or the change rate didt of the measured instantaneous values Imeas of alternating current is calculated, the second derivative d2idt2 of the measured instantaneous values Imeas of alternating current is calculated, and the foreign object is detected when the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value Ilimit of alternating current, or the measured and/or calculated RMS value IRMS of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the RMS value IRMS limit, or the calculated change rate didt of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the change rate didtlimit, or the calculated second derivative d2idt2 of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the second derivative d2idt2limit</description><subject>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><subject>SYSTEMS FOR STORING ELECTRIC ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPBwVPB1DfHwd1Fw8w9ScASRrp7ufgr-Tl6uziEKLq4hQMrT30_B0w8o6-zvF-LoHOLjGhys4OzhGOTu6eeuEBwZHOLqy8PAmpaYU5zKC6W5GRTcXEOcPXRTC_LjU4sLEpNT81JL4l0DTAzNTAwsDRwNjYlQAgBl6yv0</recordid><startdate>20230412</startdate><enddate>20230412</enddate><creator>Tombelli, Fabio</creator><creator>Blaszczyk, Pawel</creator><scope>EVB</scope></search><sort><creationdate>20230412</creationdate><title>A METHOD FOR A FOREIGN OBJECT DETECTION IN A CONTACTLESS CHARGING SYSTEM</title><author>Tombelli, Fabio ; Blaszczyk, Pawel</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP4164090A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2023</creationdate><topic>CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><topic>SYSTEMS FOR STORING ELECTRIC ENERGY</topic><toplevel>online_resources</toplevel><creatorcontrib>Tombelli, Fabio</creatorcontrib><creatorcontrib>Blaszczyk, Pawel</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Tombelli, Fabio</au><au>Blaszczyk, Pawel</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>A METHOD FOR A FOREIGN OBJECT DETECTION IN A CONTACTLESS CHARGING SYSTEM</title><date>2023-04-12</date><risdate>2023</risdate><abstract>A contactless power supply device (10) for a contactless charging system comprising a high frequency generator (11) for generating a high frequency waveform, an oscillation unit (12) with a primary coil (13) for generating an alternating flux and a control unit (14) for controlling operation of the high frequency generator (11). The output of the high frequency generator (11) is connected to the primary coil (13) of the oscillation unit (12) and the output of the control unit (14) is connected to the input of the high frequency generator (11). Furthermore, the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or the contactless power supply device (10) comprises a measuring unit (15) configured to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and the control unit (14) is configured to calculate the RMS values IRMS of the measured instantaneous values Imeas of alternating current, or to calculate the change rate didt of the measured instantaneous values Imeas of alternating current, wherein di - a first degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt - a first degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or to calculate a second derivative d2idt2 of the measured instantaneous values Imeas of alternating current, wherein d2i - a second degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt2 - a second degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or the control unit (14) is configured to measure instantaneous values Imeasof alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure the RMS values IRMS of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the RMS values IRMS of the measured instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system, or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the change rate didt of the measured instantaneous values Imeas of alternating current, wherein di - a first degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt - a first degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), or to measure instantaneous values Imeas of alternating current of the primary coil (13) during a charging state of a contactless charging system and calculate the second derivative d2idt2 of the measured instantaneous values Imeas of alternating current, wherein d2i - a second degree differential of the measured instantaneous values Imeas of alternating current of the primary coil (13), dt2 - a second degree differential of measurement time of the instantaneous values Imeas of alternating current of the primary coil (13), and said contactless power supply device (10) is configured to detect a foreign object between the power supply device (10) and a power receiver device of a contactless charging system such that instantaneous values Imeas of alternating current are measured, or the RMS values IRMS of alternating current are measured and/or calculated, or the change rate didt of the measured instantaneous values Imeas of alternating current is calculated, the second derivative d2idt2 of the measured instantaneous values Imeas of alternating current is calculated, and the foreign object is detected when the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value Ilimit of alternating current, or the measured and/or calculated RMS value IRMS of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the RMS value IRMS limit, or the calculated change rate didt of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the change rate didtlimit, or the calculated second derivative d2idt2 of the measured instantaneous value Imeas of alternating current is equal or greater than a set threshold value of the second derivative d2idt2limit</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | A METHOD FOR A FOREIGN OBJECT DETECTION IN A CONTACTLESS CHARGING SYSTEM |
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