Abstract:
A battery system for a power tool includes two or more battery packs (12), at least one battery holder (14) adapted to detachably engage two or more of the battery packs and a charger (16, 216, 316, 416) adapted to detachably engage the battery holder and to simultaneously electrically communicate with two or more of the battery packs while the at least one battery holder engages both the charger and the battery packs.
Abstract:
An information setting apparatus in one aspect of the present disclosure comprises a clock information device, an information receiving device, a permission time calculating device, and an information setting device. The permission time calculating device calculates an operation permission time based on current time information stored in the clock information device and on start time information received by the information receiving device. The information setting device sets operation limitation information, including the operation permission time to at least one of a battery pack or an electrically-driven working machine.
Abstract:
An electric power tool includes a wireless transmission unit and a transmission control unit that causes the wireless transmission unit to transmit a linking signal to a dust collector to thereby cause the dust collector to operate in a linked manner. An operation mode of the transmission control unit is shifted from a normal mode to a pairing mode by operation of an operation unit. When in the pairing mode, the transmission control unit causes the wireless transmission unit to transmit a pairing request signal to the dust collector. In this way, the electric power tool can be registered in the dust collector as a link target appliance.
Abstract:
An electric power tool system comprises a tool main body, a battery pack detachably attached to the tool main body, and a first charger that charges the battery pack. The first charger comprises a rechargeable battery that supplies current to at least one rechargeable battery of the battery pack. The at least one rechargeable battery of the first charger preferably has a larger charge storage capacity than the at least one rechargeable battery of the battery pack.
Abstract:
A battery pack includes: a battery; a notification unit configured to notify that a fully charged state is reached; a determination unit configured to determine whether the fully charged state is reached; a processing unit configured to execute a full charge process if the fully charged state is determined, the full charge process being one of causing the notification unit to make a notification and maintaining a possible state, in which making a notification is possible; and a factor detection unit configured to detect occurrence of a predetermined increase factor during execution of the full charge process, the increase factor leading to increase in a chargeable capacity of the battery as compared with the time when the fully charged state is determined. The processing unit stops the full charge process if occurrence of the increase factor is detected during execution of the full charge process.
Abstract:
A motor-driven appliance includes a battery; a motor including permanent magnets as field magnets; a momentary maximum current upper limit storage unit in which a predetermined momentary maximum current upper limit is stored; a current detection unit that detects a current flowing in the motor; a current threshold setting unit that generates a current threshold based on the momentary maximum current upper limit, and outputs the generated current threshold; a current exceedance determination unit that determines whether the current detected by the current detection unit has become equal to or greater than the current threshold, and outputs an interruption signal used to interrupt a current path from the battery to the motor when the detected current has become equal to or greater than the current threshold; and a current flow interruption unit that interrupts the current path when the interruption signal is outputted from the current exceedance determination unit.
Abstract:
An electric power tool system comprises a tool main body, a battery pack detachably attached to the tool main body, and a first charger that charges the battery pack. The first charger comprises a rechargeable battery that supplies current to at least one rechargeable battery of the battery pack. The at least one rechargeable battery of the first charger preferably has a larger charge storage capacity than the at least one rechargeable battery of the battery pack.
Abstract:
A charger (40; 240; 340) charges a battery pack (20) that is detachably attachable to a cordless power tool (12). The charger has at least a first side wall (44b) that at least partially defines a battery pack receiving hole (44; 244) shaped to receive and accommodate the battery pack. A charging output element (62; 362) supplies charging power to the battery pack. The battery pack receiving hole has a lateral cross sectional area that decreases downwardly in the vertical direction of the battery pack receiving hole such that gravity causes the battery pack to be guided to a prescribed position within the battery pack receiving hole. In addition, the charging output element is positioned so as to be proximal to a corresponding charging power input element of the battery pack when the battery pack is disposed in the prescribed position.