Battery charger

Abstract

A battery charger includes an accommodating part for accommodating a group of cells and a plurality of cell assemblies respectively having charging terminals for charging the group of cells; a first terminal plate formed in the surface of the accommodating part to come into contact with the charging terminal of the first cell assembly and a second terminal plate coming into contact with the second cell assembly; a switching element for interrupting voltage from an ac power source; a unit for rectifying and smoothing the voltage interrupted by the switching element; and a unit for applying the smoothed dc voltage respectively to the first and second terminal plates.

Description

technical field [0001] The present invention relates to a battery charger for charging a battery device using Stackable Cell Assembly Technology (Stackable Cell Assembly Technology, hereinafter abbreviated as SCAT). Background technique [0002] Initially, referring to Figure 1A - 1D, describe the SCAT concept proposed by the inventor of the present invention. [0003] Cordless power tools 20 such as electric drivers, electric drills, and impact tools have motors to generate rotational power, and are designed to reduce the rotational speed of the motor through a reduction mechanism, and then transmit the rotational power to the tip tool. [0004] exist Figure 1A In , reference numeral 20 denotes a cordless electric tool. The cordless power tool includes a main body part 20A and a handle part 20B. A tool head 30 is attached to the end of the body part 20A. One end of the handle part 20B is connected to the main body part 20A, and the battery device 10 is attached to the ...

AI Technical Summary

Problems solved by technology

However, since the current capacity in general power tools is predetermined, it is not possible to use battery packs with different values ​​of current capacity depending on the way of operation.

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