CN204790671U - Electron cigarette heating power stable control circuit - Google Patents
Electron cigarette heating power stable control circuit Download PDFInfo
- Publication number
- CN204790671U CN204790671U CN201520514423.5U CN201520514423U CN204790671U CN 204790671 U CN204790671 U CN 204790671U CN 201520514423 U CN201520514423 U CN 201520514423U CN 204790671 U CN204790671 U CN 204790671U
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- China
- Prior art keywords
- heating power
- electronic cigarette
- control circuit
- cigarette heating
- voltage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 59
- 235000019504 cigarettes Nutrition 0.000 title abstract description 7
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 7
- 239000003571 electronic cigarette Substances 0.000 claims description 50
- 238000005070 sampling Methods 0.000 claims description 34
- 230000006641 stabilisation Effects 0.000 claims description 13
- 238000011105 stabilization Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical group [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 13
- 230000001052 transient effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 6
- 238000000889 atomisation Methods 0.000 description 4
- 230000000391 smoking effect Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Chemical class CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 229910000896 Manganin Inorganic materials 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009688 liquid atomisation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000005586 smoking cessation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Control Of Resistance Heating (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The utility model discloses an electron cigarette heating power stable control circuit, including electronics cigarette heating power control circuit and electronics cigarette heating device. The electron cigarette heating power stabilizing circuit of set voltage electric current dicyclo control among the electron cigarette heating power control circuit is including voltage feedback control circuit and current feedback control circuit. The utility model discloses heating power passes through the dicyclo feedback control of voltage and electric current, and the control operating circuit is realized responding immediately, output is accurate. Rise along with the temperature and rise when resulting in power change when heating device resistance, not only can control through voltage feedback, can also control through the timely current feedback of precision, can realize overflowing and the transient state protection of short circuit drive protection device supply interruption through current feedback simultaneously to protect whole circuit and heating device.
Description
Technical field
The utility model relates to a kind of heating power stabilization control circuit of daily life field, particularly a kind of stabilizing circuit using the atomization heating power of the electronic cigarette of electric current and voltage double-loop control.
Background technology
Along with social development and human progress, tobacco as the harmful consumer goods had gradually the healthy article of identical function replace.As the electronic cigarette product risen recently, this product produces smog by the liquid of high-tech means atomization containing chemical substances such as nicotines, realizes smoking object.Also by using different chemical substances, the object of assisting smoking cessation can be reached simultaneously.It is not only conducive to the physical and mental health of smoker, is also conducive to environmental protection simultaneously, saves social resources.Thus this product very by vast " smoker " like commercially there is very large profit margin.
The electronic cigarette product that existing market is popular, be all generally be atomized by the electronic cigarette liquid containing nicotine by electrically heated method, people suck the electronic cigarette liquid be atomized by certain device, and then reach the object of smoking.Because this so-called cigarette is not completely containing solid particle, being only a kind of mist in fact, is thus very little on the impact of the person and environment.
The atomising device of current electronic cigarette generally all adopts resistance wire heating power, with the heat mist elimination electronic cigarette liquid of resistance wire, need the instantaneous higher atomization temperature of generation one owing to being atomized a certain amount of electronic cigarette liquid, such as general electronic cigarette liquid atomization temperature requires to reach between 180-350 degree Celsius.
In order to adapt to the atomization temperature demand of the electronic cigarette liquid of different temperatures, heating power that can be different according to different temperatures requirements set, thus the heating power adjusting electronic cigarette is at any time needed, simultaneously owing to using the smoking hobby in the crowd of electronic cigarette different, someone likes large mouth to suck, someone likes osculum to suck, and thus also needs to carry out necessary adjustment to the power of electronic cigarette heating.
During the power taking certain mode to adjust required for electronic cigarette, generally just determine the Parameter Conditions that electronic cigarette is operated in certain voltage, electric current and waveform, now just require that electrons heat power is stable, larger parameter drift phenomenon can not be produced along with the rising of temperature.The resistivity of such as heating wire can raise along with temperature and increase, the change of resistance will inevitably be caused, and then electric current and the isoparametric change of voltage can be had influence on, this change also directly can have influence on heating power drift, cause heating power unstable, What is more, then also may cause device failure when drift acquires a certain degree, and produces destructive result.
Current electronic cigarette control of product circuit only have employed Voltage Feedback and controls to reach the constant of output power and regulate, the i.e. sampling resistor circuit in parallel at load two ends, pre-set output voltage value passing ratio dividing potential drop is fed back to control end, to exceed or lower than preset value when reality exports, then control end is by the change adjustment duty cycle of switching of sampling back voltage, levels off to preset value to reach output.It is slow to there is response speed in negative voltage feedback, is limited by the factors such as Sampling device precision, there will be out of control, and cause output error or change too large, make user experience the bad phenomenon occurring burning even in the course of the work, reliability is relatively poor.
The utility model for above-mentioned prior art defect, a kind of electronic cigarette heating power stabilizing circuit of electric current and voltage pattern of double controlling of utility model.
Utility model content
The purpose of this utility model is to provide a kind of electronic cigarette heating power stabilization control circuit.It is intended to keep electronic cigarette heating and power stability in a certain scope determined.
Electronic cigarette heating power stabilization control circuit of the present utility model, comprises electronic cigarette heating power control circuit and electronic cigarette heater element.Arrange the electronic cigarette heating power stabilizing circuit of electric current and voltage double-loop control in described electronic cigarette heating power control circuit, the electronic cigarette heating power stabilizing circuit of described electric current and voltage double-loop control comprises Voltage Feedback control circuit and Current Feedback Control Circuit.
Described Voltage Feedback control circuit sampling end is connected to electronic cigarette heater element two ends, gathers heater element fall voltage signal, and Voltage Feedback control circuit output terminal connects electronic cigarette heating power control input end.
The Sampling device of described Voltage Feedback is sampling resistor.
Described Current Feedback Control sampling end is connected to electronic cigarette heater element, and Sampling device is connected in series to heatedly in loop, the fall voltage signal that Sampling device is drawn after amplifying process to Current Feedback Control end and protection switch control end.Electric current flows through Sampling device and produces fall voltage signal after amplifying process to FEEDBACK CONTROL end and protecting control end.
Described current sampling devices is precision current sampling resistor, and sampled signal precision current is sampled as resistance both end voltage and falls.When heater element is the resistance heating wire of 0.1-3 ohm, the accurate copper-manganese resistance of 1-5 milliohm can be used.
The fall voltage signal that described Sampling device is drawn is divided into two-way after operational amplifier amplifies, and wherein a road is used for feeding back to Current Feedback Control end, another road connecting circuit overcurrent and short-circuit protection control end.
Control circuit of the present utility model is except the power demand of different class except controlling adjustment electronic cigarette heating power, by the double-loop feedbackc of the heating power of each grade by voltage and current, can also control in a metastable scope.When heater element resistance along with temperature raise and raise cause changed power time; not only can be controlled by Voltage Feedback; can also by precision timely current feedback control; when circuital current sudden change causes overcurrent or short circuit; protective device can also be driven to cut off the electricity supply, to protect whole circuit and heater element.
Accompanying drawing explanation
Fig. 1 is electronic cigarette heating power control circuit block scheme of the present utility model;
Fig. 2 is that electronic cigarette heating power of the present utility model controls electrical schematic diagram;
Embodiment
Below in conjunction with the drawings and specific embodiments, detailed description is made to the utility model.
As shown in Figure 1, be electronic cigarette heating power control circuit of the present utility model, wherein in figure, MCU is the core CPU chip of control circuit, adopts STM32L chip.MCU feed circuit are connected to MCU and battery, can be controlled as battery charges and the electric discharge of battery by MCU.Battery exports through MCU control step-up/step-down circuit for load heater element is powered, and the buck controlled by MCU adjustment controls heating power.
Voltage control loop is such, and voltage sampling circuit is parallel on load circuit, for gathering the change that load both end voltage is fallen, and then feeds back to MCU, controls for realizing Voltage Feedback.
Current controlled circuit is such, and current sampling circuit gathers load current signal, and the load current signal of collection is divided into two-way, and wherein a road is used for Current Feedback Control, and another road is as overcurrent and short-circuit protection.
After above-mentioned circuit connects, the step-up/step-down circuit that battery is controlled by MCU provides heating voltage to load heater element, ensures the operating voltage that the resistance wire one of heater element is default.The voltage of load can be exported to according to the demand adjustment MCU of heating power.
In Fig. 1, Voltage Feedback control circuit represents the voltage drop change at heating load two ends from resistance pressure-dividing network sampling, due to the change of load resistance in heating process, the change of load two ends pressure drop can be caused, and then cause heating power drift phenomenon, produce the consequence of heating-up temperature instability.This circuit can the change of this voltage drop of perception, and then adjusts by the control input end feeding back to MCU the voltage that battery exports to load and come Modulating Power and temperature.
But, because the signals collecting of the voltage drop of simple voltage loop control is only after load resistance changes, is just embodied in the change of voltage drop, thus there is a Delay Process, often when voltage drop changes, heating power will there occurs serious drift.
Thus, the utility model adds Current Feedback Control Circuit on voltage-controlled basis, and as shown in Figure 2, Current Feedback Control Circuit comprises current sampling devices, sample rate current amplifying circuit, current feedback circuit and current foldback circuit.Sampled current signals is converted into fall voltage signal by the Sampling device wherein in Current Feedback Control Circuit; this fall voltage signal is divided into two-way after amplifying circuit amplifies; wherein a road feeds back to the current controling end of CPU; another road is compared with setting reference voltage via after amplifier process; guard signal is produced when overcurrent or short circuit appear in circuit; rupturing duty exports, and guarantees that circuit safety is reliable.
As shown in Figure 2, be embodiment of the present utility model, the heating power of wherein embodiment setting load is 40 watts, and predetermined control heating power scope is ± 0.5 watt-hour.The control chip MCU that control circuit adopts is STM32L single-chip microcomputer, and heating resistor adopts the resistance wire of the nickel-chrome material of 0.1-3.5 ohm, voltage sample resistance R
aadopt precision to be the precision resistance of 0.5%, voltage sampling signal is connected to the control input end of MCU by impedance matching network.
Adopt precision current sampling resistor manganin resistance as current sampling resistor R
s, resistance is between 1-5 milliohm, is connected in load circuit, and the fall voltage signal that sampling resistor two ends are detected is through operational amplifier U
1Bafter amplification, be divided into two-way, wherein lead up to resistance R
6be connected to the current feedback input end of control CPU in order to adjust output power, reduce or promote load temperature.Separately lead up to resistance R
5input comparator U
1Ain, the current reference reference voltage V set with CPU
refcompare, export comparative result to determine load running situation, when overcurrent or short circuit appear in circuit, by power transistor Q
1timely rupturing duty exports, the security of operation of protection load and circuit.
Owing to adding electric current loop FEEDBACK CONTROL in stabilization control circuit, the fine setting that therefore can realize heating power can be carried out at any time, overcomes hysteresis quality and the instability of Voltage Feedback adjustment.
Claims (8)
1. an electronic cigarette heating power stabilization control circuit, comprise electronic cigarette heating power control circuit and electronic cigarette heater element, it is characterized in that: the electronic cigarette heating power stabilizing circuit arranging electric current and voltage double-loop control in described electronic cigarette heating power control circuit, the electronic cigarette heating power stabilizing circuit of described electric current and voltage double-loop control comprises Voltage Feedback control circuit and Current Feedback Control Circuit.
2. electronic cigarette heating power stabilization control circuit according to claim 1, it is characterized in that: described Voltage Feedback control circuit sampling end is connected to electronic cigarette heater element two ends, gather heater element fall voltage signal, Voltage Feedback control circuit output terminal connects electronic cigarette heating power control input end.
3. electronic cigarette heating power stabilization control circuit according to claim 2, is characterized in that: the sampling end of described Voltage Feedback is sampling resistor.
4. electronic cigarette heating power stabilization control circuit according to claim 1; it is characterized in that: described Current Feedback Control sampling end is connected to electronic cigarette heater element; Sampling device is connected in series to heatedly in loop, the fall voltage signal that Sampling device is drawn after amplifying process to Current Feedback Control end and protection switch control end.
5. electronic cigarette heating power stabilization control circuit according to claim 4, it is characterized in that: described current sampling devices is precision current sampling resistor, sampled signal is the voltage drop at precision current sampling resistor two ends.
6. the electronic cigarette heating power stabilization control circuit according to claim 4 or 5; it is characterized in that: the fall voltage signal that described Sampling device is drawn is divided into two-way after operational amplifier amplifies; wherein a road is connected to Current Feedback Control end, and another road is connected to overcurrent, short-circuit protection control end.
7. electronic cigarette heating power stabilization control circuit according to claim 5, is characterized in that: described electronic cigarette heater element is the resistance heating wire of 0.1-3.5 ohm, and precision current sampling resistor adopts the precision resistance of 1-5 milliohm.
8. electronic cigarette heating power stabilization control circuit according to claim 7, is characterized in that: described precision current sampling resistor is copper-manganese precision resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514423.5U CN204790671U (en) | 2015-07-15 | 2015-07-15 | Electron cigarette heating power stable control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514423.5U CN204790671U (en) | 2015-07-15 | 2015-07-15 | Electron cigarette heating power stable control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204790671U true CN204790671U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520514423.5U Expired - Fee Related CN204790671U (en) | 2015-07-15 | 2015-07-15 | Electron cigarette heating power stable control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204790671U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515360A (en) * | 2016-02-02 | 2016-04-20 | 中国电子科技集团公司第四十三研究所 | Short-circuit protection circuit based on double operational amplifiers |
| CN106339026A (en) * | 2015-07-15 | 2017-01-18 | 深圳市新宜康科技有限公司 | Electronic cigarette heating power stable control circuit |
| CN107440157A (en) * | 2017-08-15 | 2017-12-08 | 惠州市新泓威科技有限公司 | Dry burning prevention device of electronic cigarette and dry burning prevention control method thereof |
| WO2018161610A1 (en) * | 2017-03-10 | 2018-09-13 | 常州市派腾电子技术服务有限公司 | Atomization control circuit and electronic cigarette |
| WO2019153653A1 (en) * | 2018-02-09 | 2019-08-15 | 常州市派腾电子技术服务有限公司 | Voltage output circuit and electronic cigarette |
-
2015
- 2015-07-15 CN CN201520514423.5U patent/CN204790671U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339026A (en) * | 2015-07-15 | 2017-01-18 | 深圳市新宜康科技有限公司 | Electronic cigarette heating power stable control circuit |
| CN105515360A (en) * | 2016-02-02 | 2016-04-20 | 中国电子科技集团公司第四十三研究所 | Short-circuit protection circuit based on double operational amplifiers |
| WO2018161610A1 (en) * | 2017-03-10 | 2018-09-13 | 常州市派腾电子技术服务有限公司 | Atomization control circuit and electronic cigarette |
| CN107440157A (en) * | 2017-08-15 | 2017-12-08 | 惠州市新泓威科技有限公司 | Dry burning prevention device of electronic cigarette and dry burning prevention control method thereof |
| WO2019033886A1 (en) * | 2017-08-15 | 2019-02-21 | 惠州市新泓威科技有限公司 | Dry-burning prevention device of electronic cigarette, and dry-burning prevention control method therefor |
| CN107440157B (en) * | 2017-08-15 | 2020-04-07 | 惠州市新泓威科技有限公司 | Dry burning prevention device of electronic cigarette and dry burning prevention control method thereof |
| WO2019153653A1 (en) * | 2018-02-09 | 2019-08-15 | 常州市派腾电子技术服务有限公司 | Voltage output circuit and electronic cigarette |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518100 6 buildings in xinxintian Industrial Zone, Xinsha Road, Baoan District, Shenzhen, Guangdong. Patentee after: SHENZHEN INNOKIN TECHNOLOGY Co.,Ltd. Address before: 518100 6 buildings in xinxintian Industrial Zone, Xinsha Road, Baoan District, Shenzhen, Guangdong. Patentee before: SHENZHEN INNOKIN TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |