{
  "$type": "site.standard.document",
  "description": "A charger 10 includes an output circuit unit 3 to output a charging current to a secondary battery 21, a voltage detection unit 2 to detect a voltage of the secondary battery, and a control unit 1 to control the output circuit unit, whereby constant current charging and constant voltage charging…",
  "path": "/patents/985583",
  "publishedAt": "2013-03-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J7/04",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "A charger 10 includes an output circuit unit 3 to output a charging current to a secondary battery 21, a voltage detection unit 2 to detect a voltage of the secondary battery, and a control unit 1 to control the output circuit unit, whereby constant current charging and constant voltage charging are performed. The control unit decreases a constant current value of the charging current by stages during the constant current charging and determines that the secondary battery has deteriorated by using a first voltage drop value of the secondary battery occurring upon first conversion and a second voltage drop value of the secondary battery occurring upon second conversion.",
  "title": "Charger"
}