{
  "$type": "site.standard.document",
  "description": "This application relates to the field of electromagnetic device technologies, and provides a shielding film, a coil assembly, and a wireless charging device, to reduce external radiation in a charging process. The shielding film provided in embodiments of this application includes a first film…",
  "path": "/patents/1414613",
  "publishedAt": "2025-01-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01F27/28",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "This application relates to the field of electromagnetic device technologies, and provides a shielding film, a coil assembly, and a wireless charging device, to reduce external radiation in a charging process. The shielding film provided in embodiments of this application includes a first film layer. The first film layer includes a first conductive part and a first insulating part, and the first insulating part penetrates the first conductive part in a thickness direction of the first film layer. Under electromagnetic influence of a first electromagnetic field, a first eddy current is formed in the first film layer, and a loop of the first eddy current is located in the first conductive part, so that the first eddy current has relatively high current intensity. Under electromagnetic influence of a second electromagnetic field, a second eddy current is formed in the first film layer, and a loop of the second eddy current passes through the first insulating part, so that current intensity of the second eddy current can be reduced. The shielding film provided in the embodiments of this application can effectively absorb a high-frequency electromagnetic field, and does not attenuate a low-frequency electromagnetic field, thereby achieving an effect of blocking a high-frequency electromagnetic field and conducting a low-frequency electromagnetic field.",
  "title": "SHIELDING FILM, COIL ASSEMBLY, ELECTRONIC DEVICE AND WIRELESS CHARGING DEVICE"
}