Battery pack for electric tool

Abstract

The invention provides a battery pack for an electric tool. The battery pack comprises batteries, shells, switches, springs and sliding grooves. The battery pack is formed by arranging the batteries, power lines, the springs and the switches in the shells. Positive electrodes of the batteries are connected with the lower elastic switches through the power lines and then connected with a motor through the bidirectional switch and a main switch of the motor. The sliding grooves or slots are formed in the lower portions of the shells of the battery pack and are internally connected with power source contact chips and the springs. An elastic lock is arranged on one side of each shell. The battery pack has the advantages that the mode of the sliding grooves and the slots is adopted so that an auxiliary battery pack body can be quickly connected to a main battery pack body, power sources can be used without interruption, the power source contact chips of the two battery pack bodies can be protected, and electricity leakage and short circuits caused by exposure can be avoided; the power sources can be switched without interruption through the bidirectional switch; connection of the battery with full electricity and the battery with the electricity used up can be cut off quickly through the elastic switches; integrally, the electric tool can use the power sources without interruption, and the service life of the batteries is protected.

Description

technical field [0001] The invention relates to a detachable, installed and sustainable electric tool battery pack with a switch installed on the battery pack and the bottom of the battery pack. Suitable for hand-held power tools. Background technique [0002] At present, the service life of the batteries in the battery packs of known hand-held electric tools is relatively short, and it is inconvenient to stop working when replacing the batteries. The patent No. CN201210572150.0 is a snap-on battery pack and a snap-on battery pack in an electric tool. It provides a sliding battery pack and an electric tool using the sliding battery pack. The sliding battery pack includes a plurality of batteries A plurality of battery packs are electrically connected, and each of the plurality of battery packs includes two adjacent sides, and two adjacent battery packs can slide along the two adjacent sides . In this way, the sliding battery pack can have different shapes. When the slidin...

AI Technical Summary

Problems solved by technology

The structure of the above two battery packs is more convenient to use, but the connection of the battery is not disconnected, so that the fully charged battery and the exhausted battery are used at the same time, and the power supply time is shortened, which greatly reduces the life of the two sets of batteries, and the two batteries The contact wire of the package connection part is exposed, and it is easy to leak electricity

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