{
  "$type": "site.standard.document",
  "description": "A wireless power supply system includes a wireless power supply apparatus and transmission coils (6, 31, 32). The wireless power supply system may further include reception coils (7, 41, 42). The wireless power supply apparatus includes a power supplying unit, a detecting unit, and a control unit…",
  "path": "/patents/967781",
  "publishedAt": "2014-11-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L53/122",
    "FUJITSU LTD [JP]"
  ],
  "textContent": "A wireless power supply system includes a wireless power supply apparatus and transmission coils (6, 31, 32). The wireless power supply system may further include reception coils (7, 41, 42). The wireless power supply apparatus includes a power supplying unit, a detecting unit, and a control unit. The power supplying unit supplies electric power to a power transmission coil at a resonance frequency at which a magnetic field resonance is generated between the power transmission coil and a power reception coil. The power transmission coil sends out the electric power as magnetic field energy, using a magnetic field resonance. The detecting unit detects the phase difference of current flowing in the power transmission coil for voltage applied to the power transmission coil. The control unit switches the amount of the electric power supplied by the power supplying unit, based on the phase difference.",
  "title": "WIRELESS POWER SUPPLY APPARATUS, WIRELESS POWER SUPPLY SYSTEM, AND WIRELESS POWER SUPPLY METHOD"
}