Electronic cigarette and temperature control method thereof

Abstract

The invention relates to the field of electronic products, in particular to an electronic cigarette and a temperature control method thereof. The electronic cigarette comprises an atomizer and a power supply unit and a control circuit electrically connected with the atomizer; a heating coil is accommodated in the atomizer and electrically driven by the power supply unit, and cigarette liquid is atomized after heating; the control circuit further comprises a controller, and a display circuit, a control signal acquisition circuit, a protective circuit, a resetting circuit, a charging circuit and a pulse width modulation circuit electrically connected with the controller; the pulse width modulation circuit modulates width of output pulse according to difference between real-time temperature of the heating coil and preset temperature, electronic smoke stable in taste is generated by controlling the temperature of the heating coil in real time, the problem of taste inconformity of the electronic cigarette due to instable temperature of the heating coil or too large temperature fluctuation is avoided, and meanwhile the problem of scorched flavor caused by over-high temperature of the heating coil is avoided.

Description

technical field [0001] The invention relates to the field of electronic products, in particular to an electronic cigarette and a temperature control method thereof. Background technique [0002] Electronic cigarette is a product mainly powered by batteries. When the internal detection circuit of the controller detects an effective smoking signal, the voltage is applied to the heating wire, which makes the heating wire heat up and vaporizes the smoke oil to the mouth, so as to realize the smoking experience. Effect. [0003] Current electronic cigarettes generally use lithium batteries as power sources, and output a constant voltage through the control chip to make the heating wire generate heat. These electronic cigarettes generally use the following three control methods: [0004] The first is to output a constant voltage within a certain range, for example, the output voltage is 3.6V±0.2V. When the lithium battery voltage drops to 3.1V, the control chip stops outputting ...

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Problems solved by technology

[0007] However, the first and second control methods have relatively large defects. Since the voltage applied to both ends of the heating wire is a constant voltage or a voltage that changes with the voltage of the lithium battery, the longer the smoking time, the higher the temperature of the heating wire. When the temperature of the heating wire exceeds the vaporization temperature of the e-liquid, it will crack the e-liquid and produce a burnt smell; while the third method can control the temperature of the heating wire within a certain range to a certain extent, but this range will be relatively large. It will cause the temperature of the heating wire to fluctuate greatly, and it cannot solve the problem of inconsistent taste

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