Power tool battery pack wireless charger

摘要

A power tool system includes a power tool, a power tool battery pack and a battery pack charger. The power tool battery pack is separable from and attachable to the power tool, and electrically connectable to the power tool electrical terminals when attached to the power tool. The power tool battery pack has at least one battery cell, a receiver coil, and a control circuit for controlling the amount of power that is provided to the at least one battery cell. The battery pack charger has at least one transmitter coil for generating a magnetic field which induces a voltage in the receiver coil, and a control circuit for controlling the amount of power that is provided to the transmitter coil.

主权项

1. A wireless charger for charging multiple power tool battery packs, comprising:
a housing with a deck for supporting a first power tool battery pack, and a wall for directing movement of the first power tool battery pack in a sliding motion relative to the deck; a first wireless charging circuit disposed within the housing, the first wireless charging circuit having a first transmitter coil disposed below the deck, a first control circuit for controlling the amount of power that is provided to the first transmitter coil, and a first communication circuit connected to the first control circuit, the first communication circuit that receives information from the first power tool battery pack; and a second wireless charging circuit disposed within the housing, the second wireless charging circuit having a second transmitter coil disposed below the deck; a second control circuit for controlling the amount of power that is provided to the second transmitter coil, and a second communication circuit connected to the second control circuit, the second communication circuit that receives information from a second power tool battery pack disposed on the deck.