Self-switched double-battery structure

Abstract

The invention provides a self-switched double-battery structure, which comprises two batteries, two short-circuit switches and two short-circuit control circuits, wherein the two batteries are connected with one another in series; the two short-circuit switches are connected with the corresponding batteries in parallel; the two short-circuit control circuits are coupled to the corresponding batteries in parallel; each short-circuit control circuit receives voltages at two ends of the corresponding battery, provides a control signal according to the voltages at two ends of the corresponding battery, and is used for connecting or disconnecting the corresponding short-circuit switch; each short-circuit control circuit comprises a comparator and a bias circuit; each comparator comprises a non-inverting input end, an inverting input end and an output end; each bias circuit comprises a positive end and a negative end; each positive end is coupled to the non-inverting input end of the corresponding comparator; the batteries and the short-circuit switches are coupled between the non-inverting input ends of the comparators and the negative ends of the bias circuits in parallel; and each short-circuit switch comprises a control end which is coupled to the output end of the corresponding comparator. According to the double-battery structure provided by the invention, the batteries which run out or are damaged in a battery pack are shorted out; and the service time of the battery pack is prolonged.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a battery. Background technique [0002] Battery (Battery) refers to a cup, tank or other container or a part of a composite container that contains an electrolyte solution and a metal electrode to generate current. It is a device that can convert chemical energy into electrical energy. It has a positive pole and a negative pole. With the advancement of science and technology, batteries generally refer to small devices that can generate electrical energy, such as fuel cells, dry batteries, lead storage batteries, and solar cells. Using the battery as the energy source can obtain stable voltage, stable current, stable power supply for a long time, and a current that is little affected by the outside world, and the battery structure is simple, easy to carry, easy to charge and discharge, and is not affected by the external climate and temperature. Influence, stable and reliabl...

AI Technical Summary

Problems solved by technology

[0010] The present invention proposes a self-switching dual-battery structure, which solves the problem that the resistance of the battery will become very large when a certain section or several batteries in the existing battery pack are exhausted or damaged.

Images