{
  "$type": "site.standard.document",
  "description": "A DC backup power supply system having a battery (5); a charge-discharge circuit (6) for charging and discharging a power between the battery and a DC line; and a control circuit (7) for controlling the charge-discharge circuit, wherein the battery has a number of battery cells (15) and cylindrical…",
  "path": "/patents/1092382",
  "publishedAt": "2003-10-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G06F1/30",
    "HITACHI LTD [JP]"
  ],
  "textContent": "A DC backup power supply system having a battery (5); a charge-discharge circuit (6) for charging and discharging a power between the battery and a DC line; and a control circuit (7) for controlling the charge-discharge circuit, wherein the battery has a number of battery cells (15) and cylindrical portions of the battery cells are laid on an approximately horizontal plane.",
  "title": "DC backup power supply system"
}