Adapter and electric power tool

摘要

An adapter includes a converter unit which increases at least one of voltage and current outputted from a battery pack and supply the increased the voltage and/or the current to a load, and a characteristic detection unit which detects at least one of the voltage outputted from the battery pack, the current outputted from the battery pack, a temperature of the battery pack, a voltage inputted to the load, a current inputted to the load and a temperature of the converter unit. The adapter further includes a control unit configured to control the converter unit to increase each of said at least one of the voltage and the current outputted from the battery pack to a corresponding reference value and perform a control operation of suppressing such increase to prevent an occurrence of over-current or over-discharge based on at least one detection result.

主权项

1. An adapter, comprising:
a converter unit configured to increase at least one of a voltage and a current outputted from a battery pack and supply the increased at least one of the voltage and the current to a load; a characteristic detection unit configured to detect at least one of the voltage outputted from the battery pack, the current outputted from the battery pack, and a temperature of the battery pack; a control unit configured to control the converter unit to increase each of said at least one of the voltage and the current outputted from the battery pack to a corresponding reference value and further perform a control operation of suppressing the increase of said at least one of the voltage and the current in the converter unit to prevent an occurrence of over-current or over-discharge based on at least one detection result detected by the characteristic detection unit while continuously supplying the increased at least one of the voltage and the current to the load; and a storage unit in which temperatures of the battery pack and reference currents corresponding to the temperatures of the battery pack are stored, wherein the characteristic detection unit is configured to detect the temperature of the battery pack and the current outputted from the battery pack, and wherein, by referring to a reference current corresponding to the detected temperature of the battery pack, the control unit compares the detected current with the reference current, and, when the detected current is higher than the reference current, performs the control operation of suppressing the increase of said at least one of the voltage and the current in the converter unit while continuously supplying the increased at least one of the voltage and the current to the load.