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  "description": "A power storage system (1) includes: a power storage device (100) including a cell stack (101) including power storage cells (B0 to B5) connected in series; and a charging device (200) that supplies a charging current to the power storage device (100). The power storage system (1) further includes…",
  "path": "/patents/1408734",
  "publishedAt": "2026-03-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/389",
    "NUVOTON TECHNOLOGY CORP JAPAN [JP]"
  ],
  "textContent": "A power storage system (1) includes: a power storage device (100) including a cell stack (101) including power storage cells (B0 to B5) connected in series; and a charging device (200) that supplies a charging current to the power storage device (100). The power storage system (1) further includes: an alternating current excitating circuit (148) in the power storage device (100) or the charging device (200) that excitates the charging current using an alternating current; a complex impedance measuring unit (110) in the power storage device (100) that measures a current value of the alternating current used to excitate the charging current and a voltage value of each of the power storage cells (B0 to B5), and measures a complex impedance of each of the power storage cells (B0 to B5) from the measured current and voltage values; and a charging control unit in the power storage device (100) or the charging device (200) that controls the charging current based on the complex impedance.",
  "title": "POWER STORAGE SYSTEM, POWER STORAGE DEVICE, AND CHARGING METHOD"
}