{
  "$type": "site.standard.document",
  "description": "The embodiments of the application provide an electrode assembly and a manufacturing method and manufacturing system therefor, a battery cell and a battery. The electrode assembly includes a negative pole piece and a positive pole piece, the negative pole piece and the positive pole piece are wound…",
  "path": "/patents/1403910",
  "publishedAt": "2024-12-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/0409",
    "CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]"
  ],
  "textContent": "The embodiments of the application provide an electrode assembly and a manufacturing method and manufacturing system therefor, a battery cell and a battery. The electrode assembly includes a negative pole piece and a positive pole piece, the negative pole piece and the positive pole piece are wound to form a winding structure including a bending region and a straight region. Both the negative pole piece and the positive pole piece include a plurality of bent portions located in the bent area and a plurality of straight portions located in the straight area. At least one of the bent portions of the positive pole piece is a first bent portion, and at least one of the straight portions of the positive pole piece is a first straight portion connected to the first bent portion, the capacity of an active material per unit area inside the first bent portion is lower than that of an active material per unit area inside the first straight portion; and/or at least one of the bent portions of the negative pole piece is a second bent portion, and at least one of the straight portions of the negative pole piece is a second straight portion connected to the second bent portion, the capacity of an active material per unit area outside the second bent portion is higher than that of an active material per unit area outside the second straight portion.",
  "title": "ELECTRODE ASSEMBLY AND MANUFACTURING METHOD AND MANUFACTURING SYSTEM THEREFOR, BATTERY CELL, AND BATTERY"
}