{
  "$type": "site.standard.document",
  "description": "An electric tool is powered by a battery. An electric tool includes a motor, a charging and discharging control circuit and a motor control circuit. Charging and discharging control circuit is configured to couple to a power adapter. Charging and discharging control circuit includes a direct power…",
  "path": "/patents/964976",
  "publishedAt": "2026-05-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J7/06",
    "DELTA ELECTRONICS, INC."
  ],
  "textContent": "An electric tool is powered by a battery. An electric tool includes a motor, a charging and discharging control circuit and a motor control circuit. Charging and discharging control circuit is configured to couple to a power adapter. Charging and discharging control circuit includes a direct power supply path connected to the power adapter and battery, and is configured to detect an input current from power adapter and a first load current flowing to battery and to calculate an upper limit of a second load current that can be provided to motor according to a difference between the input current and the first load current. Motor control circuit is coupled between charging and discharging control circuit and motor, and is configured to control a speed or a torque of motor according to the upper limit of second load current.",
  "title": "Electric tool and power management circuit"
}