{
  "$type": "site.standard.document",
  "description": "A shovel according to embodiments of the present invention includes a lower travelling body (1), an upper swivel body (3), an operation attachment, an engine (11), a motor generator (12) which is connected to the engine (11), a hydraulic pump (14) which is connected to the motor generator (12) and…",
  "path": "/patents/932311",
  "publishedAt": "2017-01-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K6/24",
    "SUMITOMO (S H I ) CONSTRUCTION MACHINERY CO LTD [JP]"
  ],
  "textContent": "A shovel according to embodiments of the present invention includes a lower travelling body (1), an upper swivel body (3), an operation attachment, an engine (11), a motor generator (12) which is connected to the engine (11), a hydraulic pump (14) which is connected to the motor generator (12) and supplies hydraulic oil to the operation attachment, a swiveling electric motor (21) which is mounted on the upper swivel body (3), a power storage device (19), a DC bus (110) which electrically connects the power storage device (19) and the swiveling electric motor (21) to each other, and a control device (30), in which the control device (30) decreases a charging/discharging limit value of the power storage device (19) and changes a discharging requirement value which is the maximum value of power which is supplied from the power storage device (9) to the swiveling electric motor (21), according to a decrease of temperature.",
  "title": "EXCAVATOR"
}