{
  "$type": "site.standard.document",
  "description": "An electrochemical apparatus, an electrical device, and a preparation method of an electrochemical apparatus are provided. The electrochemical apparatus includes an electrode assembly. The electrode assembly includes an electrode plate assembly, a first tab, and a second tab. The electrode plate…",
  "path": "/patents/1390489",
  "publishedAt": "2026-06-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0587",
    "NINGDE AMPEREX TECHNOLOGY LTD [CN]"
  ],
  "textContent": "An electrochemical apparatus, an electrical device, and a preparation method of an electrochemical apparatus are provided. The electrochemical apparatus includes an electrode assembly. The electrode assembly includes an electrode plate assembly, a first tab, and a second tab. The electrode plate assembly includes a first electrode plate and a second electrode plate. The first electrode plate includes a first current collector and a first active material layer, a first region of a winding tail section of the first current collector is connected to the first tab, and the first current collector includes a first coated region and a first segment located at the winding tail section. The second electrode plate includes a second current collector and a second active material layer, a second region of a winding tail section of the second current collector is connected to the second tab, and the second current collector includes a second coated region and a second segment located at the winding tail section. A sum of equivalent magnetic field strengths of the first current collector F1 and a sum of equivalent magnetic field strengths of the second current collector F2 satisfy: |F1-F2|≤4×10-5, which can better reduce an axial magnetic field at an end face of a wound structure, thereby further reducing interference of the electrochemical apparatus to the electrical device.",
  "title": "ELECTROCHEMICAL APPARATUS, ELECTRICAL DEVICE, AND PREPARATION METHOD FOR ELECTROCHEMICAL APPARATUS"
}