摘要:
A battery monitoring device of a battery pack configured for powering a cordless power tool may include an integrated circuit connected to a microprocessor of the pack that is external to the integrated circuit, and which is connected to each of N battery cells of the pack. The integrated circuit may be configured to take, singly or sequentially, a sampled reading comprising one of an individual cell voltage or a total pack voltage for all cells in the pack. The sampled reading is filtered in the integrated circuit prior to being read by the microprocessor.
摘要:
A battery monitoring device of a battery pack configured for powering a cordless power tool may include an integrated circuit connected to a microprocessor of the pack that is external to the integrated circuit, and which is connected to each of N battery cells of the pack. The integrated circuit may be configured to take, singly or sequentially, a sampled reading comprising one of an individual cell voltage or a total pack voltage for all cells in the pack. The sampled reading is filtered in the integrated circuit prior to being read by the microprocessor.
摘要:
A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection circuits, methodologies and devices to protect against fault conditions within the pack, as the pack is operatively attached to and providing power to the power tool, and/or as the pack is operatively attached to and being charged by the charger.
摘要:
A method of charging a battery pack is provided. The method includes: electronically connecting a battery pack to a charger; detecting information regarding the battery pack; determining an appropriate charging regime based on the detected information; and applying the charging regime to the battery pack. A battery charger may also provided. The battery charger includes: a first terminal for connecting to a battery pack; a second terminal for connecting to a battery pack, a microprocessor operatively connected to the terminals and configured to receive a signal from at least one terminal regarding a battery pack connected to the terminal and control the charger to select and apply a charging regime to the battery pack according to the signal.
摘要:
A method of charging a battery pack is provided. The method includes: electronically connecting a battery pack to a charger; detecting information regarding the battery pack; determining an appropriate charging regime based on the detected information; and applying the charging regime to the battery pack. A battery charger may also provided. The battery charger includes: a first terminal for connecting to a battery pack; a second terminal for connecting to a battery pack, a microprocessor operatively connected to the terminals and configured to receive a signal from at least one terminal regarding a battery pack connected to the terminal and control the charger to select and apply a charging regime to the battery pack according to the signal.
摘要:
A portable power supply includes a housing, and power circuitry providing an output AC waveform having a first positive voltage step level, a second higher positive voltage step level, a third lower positive voltage step level, a fourth negative voltage step level, a fifth higher negative voltage step level, and a sixth lower negative voltage step level.
摘要:
A portable power supply includes a housing, at least one battery cell, and an inverter connected to the at least one battery cell, wherein the inverter outputs at least about 3 kilowatts. A combination power supply and generator is also disclosed.
摘要:
In a cordless power tool system, a battery pack which may removably attachable to a cordless power tool and to a charger may include at least one battery cell and a power limiting device. The power limiting device may be arranged in series with the at least one battery cell for limiting power output of the battery pack based on the component that is connected to the pack. Current and hence power out of the battery pack may be controlled as a function of total internal impedance in the battery pack, which may be adjusted depending on the component that is connected to the pack.
摘要:
An improved method is provided for operating a power tool. The method includes: monitoring rotational motion of the power tool about an axis using a rotational motion sensor disposed in the power tool; determining a direction of the rotational motion about the axis; and driving the output member in a direction defined by the detected rotational motion of the tool, where the output member is driven by a motor residing in the power tool. Thus, the output member is drive clockwise when the rotational motion of the tool is clockwise about the axis and the output member is drive counter-clockwise when the rotational motion of the tool is counter-clockwise about the axis.
摘要:
A power tool includes a housing, an electric motor, an end effector coupled to the motor, a control circuit configured to control electrical power delivery to the motor, and a switch for selectively providing electrical power to the control circuit. The switch includes an elongated outer casing having at least a portion exterior of the housing. The casing is linearly moveable in a first linear direction generally transverse to a longitudinal axis of the housing. A linkage is disposed inside of the housing and coupled to the casing such that linear movement of the casing in the first direction causes linear movement of the linkage in a second direction generally transverse to the first direction. An electrical switch is disposed inside the housing and coupled to the linkage such that linear movement of the linkage in the second direction causes activation of the electrical switch.