{
  "$type": "site.standard.document",
  "description": "A power reception device includes: an estimation circuit estimating a load resistance of an entire contactless power feed apparatus and a reception-side communicator transmitting an estimated value of the load resistance of the entire contactless power feed apparatus to a power transmission device…",
  "path": "/patents/1366793",
  "publishedAt": "2024-07-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/12",
    "OMRON Corporation"
  ],
  "textContent": "A power reception device includes: an estimation circuit estimating a load resistance of an entire contactless power feed apparatus and a reception-side communicator transmitting an estimated value of the load resistance of the entire contactless power feed apparatus to a power transmission device The power transmission device has a power supply circuit supplying AC power to a transmission coil supplying power to the power reception device The power transmission device further includes a control circuit decreasing an input/output gain of a transmission-side DC-DC converter included in the power supply circuit by a predetermined amount when the estimated value of the load resistance is less than a predetermined allowed lower limit, and maintaining or increasing the input/output gain when the estimated value of the load resistance is equal to or greater than the predetermined allowed lower limit.",
  "title": "CONTACTLESS POWER FEED APPARATUS AND POWER TRANSMISSION METHOD"
}