BATTERY SYSTEM FOR INDUSTRIAL MACHINE

摘要

The purpose of the present invention is to provide a battery system for industrial machinery, which can be rapidly charged under high voltages and used with the conventional components in a low voltage system. The battery system mounted in the industrial machinery comprises: a charge input unit (2) capable of external input of power into the battery system; a plurality of battery units (Ba) having battery cells (5) which can store power to be supplied to power loads, and can be charged with power supplied from the charge input unit; an electric circuit (4) which can electrically connect the plurality of battery units and the charge input unit, and the plurality of battery units and the power loads respectively; a charging and discharging switching means for selectively switching a state where the battery units and the charge input unit can be electrically connected to each other or a state where the battery units and the power loads (30) can be electrically connected to each other; a parallel/serial switching means for selectively switching the electrical connection among the plurality of battery units into a parallel or a serial connection; and a control device capable of controlling the charging and discharging switching means and the parallel/serial switching means.