CN-116148711-B - Short circuit detection method and device for aerosol generating device

CN116148711BCN 116148711 BCN116148711 BCN 116148711BCN-116148711-B

Abstract

The invention discloses a short circuit detection method of an aerosol generating device, which comprises the steps of judging whether the aerosol generating device is in an on state, detecting initial voltage of a battery of the aerosol generating device, judging whether accumulated detection time reaches a time threshold value, obtaining real-time voltage of the battery of the aerosol generating device, judging whether the real-time voltage meets a first preset condition, adding one to a first counter accumulated count, judging whether the real-time voltage meets the first preset condition continuously N times, judging whether the first counter accumulated count meets a second preset condition, controlling the aerosol generating device to stop working, resetting the first counter accumulated count in response to the fact that the real-time voltage does not meet the first preset condition continuously N times, and controlling the aerosol generating device to work normally. The safety of the user when using the aerosol-generating device can be effectively protected, and the service life of the aerosol-generating device can also be prolonged.

Inventors

QIU WEIHUA
WU JIE
QIU ZHIQIANG

Assignees

深圳市卓尔悦电子科技有限公司

Dates

Publication Date: 20260508
Application Date: 20230109

Claims (3)

1. A short circuit detection method of an aerosol-generating device having a battery built therein, the method comprising: Judging whether the aerosol-generating device is in an on state; Detecting an initial voltage of a battery of the aerosol-generating device in response to the aerosol-generating device being in an on state; Acquiring a real-time voltage of a battery of the aerosol-generating device in response to the accumulated detection duration reaching a time threshold; Judging whether the real-time voltage meets a first preset condition or not; Responding to the real-time voltage meeting a first preset condition, and adding one to the accumulated count of a first counter; judging whether the real-time voltage continuously meets a first preset condition for N times or not; responding to the real-time voltage continuously for N times to meet a first preset condition, and judging whether the accumulated count of the first counter meets a second preset condition or not; Responding to the first counter accumulation count meeting a second preset condition, judging that the aerosol generating device is short-circuited, and controlling the aerosol generating device to stop working; resetting the accumulated count of the first counter in response to the real-time voltage not meeting a first preset condition for N consecutive times; controlling the aerosol generating device to work normally in response to the accumulated count of the first counter not meeting a second preset condition; The first preset condition is that the difference value between the real-time voltage and the initial voltage is larger than a preset voltage drop value; the second preset condition is that the accumulated count of the first counter is greater than or equal to N.
2. A short circuit detection method of an aerosol-generating device according to claim 1, wherein between the obtaining a real-time voltage of a battery of the aerosol-generating device in response to the accumulated detection duration arrival time threshold and the determining whether the real-time voltage meets a first preset condition, further comprises: Comparing whether the real-time voltage is smaller than a preset instantaneous short-circuit voltage threshold; When the real-time voltage is smaller than a preset instantaneous short-circuit voltage threshold, judging that the aerosol generating device is short-circuited, and controlling the aerosol generating device to stop working; and when the real-time voltage is larger than a preset instantaneous short-circuit voltage threshold, judging whether the real-time voltage meets a first preset condition.
3. A short circuit detection method of an aerosol-generating device according to claim 1, wherein between the obtaining a real-time voltage of a battery of the aerosol-generating device in response to the accumulated detection duration arrival time threshold and the determining whether the real-time voltage meets a first preset condition, further comprises: judging whether the real-time voltage meets a third preset condition or not; When the real-time voltage meets a third preset condition, the second counter adds one to the accumulated count; judging whether the real-time voltage meets a third preset condition or not for M times continuously; when the real-time voltage continuously meets a third preset condition for M times, judging whether the accumulated count of the second counter meets a fourth preset condition or not; When the accumulated count of the second counter meets a fourth preset condition, controlling the aerosol generating device to stop working; When the real-time voltage does not meet a third preset condition for M times continuously, resetting the accumulated count of the second counter; When the accumulated count of the second counter does not meet a fourth preset condition, controlling the aerosol generating device to work normally; When the real-time voltage does not meet a third preset condition, judging whether the real-time voltage meets the first preset condition or not, wherein the third preset condition is that the real-time voltage value is smaller than a preset instant short-circuit voltage threshold value; the fourth preset condition is that the accumulated count of the second counter is greater than or equal to M.

Description

Short circuit detection method and device for aerosol generating device Technical Field The present invention relates to the field of aerosol generating device control technology, and in particular, to a short circuit detection method and device for an aerosol generating device. Background The aerosol generating device is internally integrated with a power output circuit, and the power output circuit can be divided into high power and low power according to different output power ranges, so that the circuit complexity is different. The aerosol generating device plays a role in atomization in the use process of a user, so that the phenomenon of condensation can be inevitably generated in the device, condensate can be generated in the aerosol generating device, if the condensate is positioned on a power circuit board or a power output load, the phenomenon of short circuit of the aerosol generating device can be caused, the aerosol generating device is started to output under the condition that the user does not know the short circuit, the internal circuit board of the aerosol generating device is damaged due to overlarge current caused by the short circuit, and the whole aerosol generating device is heated up due to excessive heat generated by the short circuit, so that the safety problem is caused. Disclosure of Invention In order to solve at least one of the technical problems in the prior art, in a first aspect, an embodiment of the present invention provides a short circuit detection method of an aerosol-generating device, where a battery is disposed in the aerosol-generating device, the method includes determining whether the aerosol-generating device is in an on state; the method comprises the steps of responding to the starting state of an aerosol generating device, detecting initial voltage of a battery of the aerosol generating device, judging whether the accumulated detection duration reaches a time threshold value, responding to the accumulated detection duration reaching the time threshold value, obtaining real-time voltage of the battery of the aerosol generating device, judging whether the real-time voltage meets a first preset condition, responding to the real-time voltage meeting the first preset condition, adding one to the accumulated count of a first counter, judging whether the accumulated count of the first counter meets a second preset condition, responding to the fact that the real-time voltage meets the first preset condition, responding to the fact that the accumulated count of the first counter meets the second preset condition, controlling the aerosol generating device to stop working, responding to the fact that the accumulated count of the first counter does not meet the first preset condition, clearing the accumulated count of the first counter, responding to the fact that the accumulated count of the first counter does not meet the second preset condition, and controlling the aerosol generating device to work normally. Further, the first preset condition is that a difference value between the real-time voltage and the initial voltage is smaller than a preset voltage drop value. Further, the second preset condition is that the accumulated count of the first counter is greater than or equal to N. Further, the controlling the aerosol-generating device to stop working in response to the first counter accumulated count meeting a second preset condition further comprises sending an alarm prompt on the aerosol-generating device. Further, after the real-time voltage of the battery of the aerosol-generating device is obtained in response to the accumulated detection duration reaching time threshold, the method further comprises the steps of comparing the real-time voltage with a preset instant short-circuit voltage threshold, controlling the aerosol-generating device to stop working when the real-time voltage is smaller than the preset instant short-circuit voltage threshold, and judging whether the real-time voltage meets a first preset condition or not when the real-time voltage is larger than the preset instant short-circuit voltage threshold. Further, after the real-time voltage of the battery of the aerosol generating device is obtained according to the arrival time threshold of the accumulated detection duration, the method further comprises the steps of judging whether the real-time voltage meets a third preset condition, adding one to the accumulated count of a second accumulated counter when the real-time voltage meets the third preset condition, judging whether the accumulated count of the second counter meets a fourth preset condition when the real-time voltage meets the third preset condition for M times continuously, controlling the aerosol generating device to stop working when the accumulated count of the second counter meets the fourth preset condition, clearing the accumulated count of the second counter when the accumulated count of the real-time voltage does not meet t