{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A secondary battery includes a positive electrode plate and a negative electrode plate; the positive electrode plate includes a positive electrode current collector and a positive electrode film layer arranged on at least one of the surfaces of the positive electrode current collector, the positive…",
  "path": "/patents/1385660",
  "publishedAt": "2026-06-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0525",
    "CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED"
  ],
  "textContent": "A secondary battery includes a positive electrode plate and a negative electrode plate; the positive electrode plate includes a positive electrode current collector and a positive electrode film layer arranged on at least one of the surfaces of the positive electrode current collector, the positive electrode film layer includes a positive electrode active material, the negative electrode plate includes a negative current collector and a negative electrode film layer arranged on at least one of the surfaces of the negative current collector, the negative electrode film layer includes a negative electrode active material; the secondary battery satisfies 0.15≤(1000*(B/A))/((T*D)*(n/4))≤0.50, in which B/A represents the capacity-excess coefficient of the negative electrode of the secondary battery, dimensionless, T represents the thickness of the negative electrode film layer, in μm, and D represents the volume average particle size Dv50 of the negative electrode active material, in μm.",
  "title": "SECONDARY BATTERY AND ELECTRICAL DEVICE"
}