A charging protection circuit for cooking stove waste heat power generation

Abstract

The invention discloses a charge protection circuit utilizing waste heat of kitchen range to generate electricity, which is characterized by comprising a charge control circuit, a potential comparison circuit and a direct current (DC) / DC variable voltage power supply, wherein the charge control circuit is mainly composed of a plurality of audions and a resistor; the potential comparison circuit is mainly composed of a potential comparator and a plurality of resistors, and used for judging existing potential of a storage battery to control a charging circuit; the DC / CD voltage transformation source comprises a power transformer, a capacitor and a diode, wherein the capacitor and the diode are connected with the power transformer; and the DC / CD voltage transformation source is used for transforming an input lower source into stable DC voltage to serve as an input source of other parts in a circuit and an input source of the charging circuit. In the charging protection circuit, only a power generating chip can charge the storage battery, but the storage battery can not discharge for the power generating chip; and only when the potential of the storage battery is lower than the a potential which is slightly higher than the lower-limit potential of limiting potentials of the storage battery doing external work, the circuit charges the storage battery, thus prolonging the service life of the storage battery, and effectively preventing the storage battery from being damaged and even exploded.

Description

technical field [0001] The invention relates to the technical field of gas stoves, and more specifically relates to a charging protection circuit for generating electricity from waste heat of a stove. Background technique [0002] At present, energy conservation and emission reduction has become a national strategy. Using low-level energy to generate electricity to meet the power needs of some appliances is an important direction for energy conservation and emission reduction. Among them, the technology of using the waste heat of cooking stoves to generate electricity has also attracted many people to study. On the other hand, since the current use of electric energy in household stoves is only for ignition and safety protection, and the power consumption is small, it is not economically cost-effective to use expensive waste heat power generation technology to replace dry batteries, so ordinary researchers seldom go deep into it. Think about specific application techniques...

AI Technical Summary

Problems solved by technology

The problem is that, on the one hand, the charging cannot be stopped automatically when the battery is full, which will cause the battery to be damaged or even explode; It can generate electricity and charge the battery, which will shorten the life of the battery

[0003] 1. The current can only flow in one direction, that is, only the power generation chip can charge the battery, and the battery cannot discharge the power generation chip;

Images