Battery pack capable of automatically converting voltage

Abstract

The invention discloses an automatic voltage conversion battery pack which is characterized in that when a first short-circuit terminal is in a short-circuit position, a second short-circuit terminal is in the short-circuit position at the same time, a third short-circuit terminal is in a separation position, and the battery pack outputs a first voltage outwards; when the first short-circuit terminal or the second short-circuit terminal is changed from the short-circuit position to the separation position, the third short-circuit terminal is switched from the separation position to the short-circuit position under the action of the first linkage deflector rod and the second linkage deflector rod, and at the moment, the battery pack outputs second voltage outwards. Linkage switching of two voltages in series and parallel connection is achieved in the battery pack, and the device has the advantages of being automatic in switching, compact in structure, simple, reliable, low in cost and the like.

Description

technical field [0001] The invention relates to a voltage automatic conversion battery pack, which belongs to the technical field of batteries. Background technique [0002] Power tools are widely used in domestic and industrial applications as an electrical load that includes a motor. With the continuous development of battery manufacturing technology, more and more power tools use batteries as power sources to form battery-type power tools without power cords. [0003] Different types of battery-operated power tools usually have different voltage and current requirements. If each type of battery-operated power tool is equipped with a single-voltage rating battery to provide voltage and current for the power tool, it is the same manufacturer for power tools. lack of availability and convenience. [0004] According to the characteristics that different tools have different requirements for the output voltage and output current of the battery pack, when there are more than ...

AI Technical Summary

Problems solved by technology

[0003]Different types of battery-operated power tools typically have different voltage and current requirements, and if each type of battery-operated power tool is equipped with a Voltage and current, batteries lack availability and convenience for power tools produced by the same manufacturer

[0004] In view of the fact that different tools have different requirements for the output voltage and output current of the battery pack, when there are more than two battery packs inside the battery pack, a larger output current can be obtained if the parallel output voltage remains unchanged or the current is also constant. To obtain a longer working time, the series output current can be kept constant to obtain a higher output voltage output or to obtain a longer working time under the condition of constant power, then, how to design a battery pack with both series and parallel voltages output, and can stably cooperate with different voltage electric tools, and realize the conversion of voltage output is a technical problem urgently needed to be solved by those skilled in the art. Add conversion interface, complex structure, high cost and low reliability

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