{
  "$type": "site.standard.document",
  "description": "A foreign matter detection device includes: a plurality of detection coils (- to -) between a transmission coil () of a power transmission device () and a reception coil () of a power reception device (), through which power is transmitted in a contactless manner; a plurality of capacitors (- to -)…",
  "path": "/patents/1363117",
  "publishedAt": "2024-05-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/60",
    "OMRON Corporation"
  ],
  "textContent": "A foreign matter detection device includes: a plurality of detection coils (- to -) between a transmission coil () of a power transmission device () and a reception coil () of a power reception device (), through which power is transmitted in a contactless manner; a plurality of capacitors (- to -) forming, for each of the detection coils, a resonance circuit together with the detection coil; a power supply circuit () supplying AC power having a predetermined frequency to each detection coil; and a detection circuit () detecting a voltage output from each detection coil and detecting a foreign matter entering between the transmission coil () and the reception coil () according to the voltage detected. Then, each detection coil is arranged to overlap by a predetermined amount that allows electromagnetic coupling between adjacent two of the detection coils (- to -) to be ignored.",
  "title": "FOREIGN MATTER DETECTION DEVICE"
}