发明名称 |
METHOD AND APPARATUS FOR PERIODICALLY CHANGING FREQUENCY IN WIRELESS POWER TRANSFER |
摘要 |
Disclosed are a wireless power transfer apparatus, and a method of changing a frequency in the wireless power transfer apparatus, in which the magnetic field intensity in a specific frequency band is decreased by periodically changing the frequency of a wireless power signal, so that it is possible to spread a frequency spectrum. To this end, a wireless power transfer apparatus includes a power transmission unit and a control unit. The power transmission unit generates a wireless power signal for transferring wireless power based on a carrier signal. The control unit determines a sweep frequency range and sweep period for the carrier signal and controls the power transmission unit to periodically change the frequency of the wireless power signal by periodically changing the frequency of the carrier signal based on the determined sweep frequency range and sweep period. |
申请公布号 |
EP2870677(A4) |
申请公布日期 |
2016.03.16 |
申请号 |
EP20120880537 |
申请日期 |
2012.07.06 |
申请人 |
LG ELECTRONICS INC. |
发明人 |
LEE, JAESUNG;SEO, JEONGKYO |
分类号 |
H02M1/44;H02J5/00;H02J50/00 |
主分类号 |
H02M1/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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