{
  "$type": "site.standard.document",
  "description": "Provided are a secondary battery, a battery module, a battery pack and an electric device. The secondary battery includes an electrode assembly and an electrolytic solution configured to infiltrate the electrode assembly, wherein the electrode assembly includes a negative electrode plate, a…",
  "path": "/patents/1361510",
  "publishedAt": "2024-03-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/583",
    "CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED"
  ],
  "textContent": "Provided are a secondary battery, a battery module, a battery pack and an electric device. The secondary battery includes an electrode assembly and an electrolytic solution configured to infiltrate the electrode assembly, wherein the electrode assembly includes a negative electrode plate, a separation film and a positive electrode plate, and the negative electrode plate includes a negative electrode current collector and a negative electrode material layer located on at least one surface of the negative electrode current collector; and by setting a tortuosity of the negative electrode plate as τ, the τ satisfies Formula I below: τ=0.5(ε) Formula I (2τ)+6≤σ≤(2τ)+10 Formula II. Therefore, the secondary battery has an excellent fast-charging performance.",
  "title": "SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRIC DEVICE"
}