Oil leakage prevention electronic cigarette heating wire driving control circuit and method, chip and electronic cigarette

Abstract

The invention relates to an oil leakage prevention electronic cigarette heating wire driving control circuit and method, a chip and an electronic cigarette, which are applied to the electronic cigarette adopting a capacitive microphone. The circuit comprise a smoking detection circuit for detecting a capacitance value of the capacitive microphone in a smoking state, and further comprises an oil leakage protection circuit. The input end of the oil leakage protection circuit is connected with the output end of the capacitive microphone. The output end of the oil leakage protection circuit is connected with a heating wire driving circuit of the electronic cigarette. The oil leakage protection circuit is used for detecting the capacitance value of the capacitive microphone and converting the capacitance value of the capacitive microphone into a first comparison signal, and when the capacitance value of the capacitive microphone reaches a set oil leakage threshold value, the control circuitcontrols the heating wire driving circuit to be closed so as to achieve an oil leakage protection function. The heating wire driving circuit is automatically detected and controlled to be closed, theoil leakage protection function is achieved, the oil explosion phenomenon caused by the fact that the electronic cigarette is still powered on under the oil leakage condition is prevented, a user canknow the tar leakage condition of the electronic cigarette, scalding of the user is prevented, and potential safety hazards of the electronic cigarette are reduced.

Description

technical field [0001] The invention relates to the technical field of electronic cigarettes, and more specifically, relates to a driving control circuit, method, chip and electronic cigarette for heating wires of an oil-leakage-proof electronic cigarette. Background technique [0002] Electronic cigarettes are widely used because of their low price and convenience. E-cigarettes usually atomize the smoke liquid through an atomizer for users to use. When the smoke liquid is produced, substances harmful to the body such as tar are removed, and the harm to the human body is eliminated. [0003] When in use, when there is oil leakage in the electronic cigarette, it is easy to cause the electronic cigarette to be fried, causing burns to the user, and even causing the explosion of the electronic cigarette in severe cases, which is not conducive to the safe use of the electronic cigarette. Existing electronic cigarettes seldom have detection devices for detecting oil leakage of el...

AI Technical Summary

Problems solved by technology

[0003] When in use, when there is oil leakage in the electronic cigarette, it is easy to cause the phenomenon of oil frying in the electronic cigarette, which will cause the user to be burned, and even cause the explosion of the electronic cigarette in severe cases, wh

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