What is an electronic cigarette?
Electronic cigarette, also known as electric atomizer, is an electronic device that transmits nicotine to the respiratory system through electronic heating. As a substitute for traditional cigarettes, it has small harm, high cost performance, no open fire and no second-hand smoke pollution. It is a new type of tobacco product with the most rapid development in recent years.
The trilogy in the development history of electronic cigarette, small cigarette → ego → big cigarette. The first e-cigarettes we came into contact with were mainly disposable e-cigarettes, which were similar in shape to real cigarettes; Ego electronic cigarette has the same composition structure as the next generation electronic cigarette, but it has a larger size. The cigarette holder integrates the cigarette bomb and the atomizer; Influenced by the smoke culture in Europe and America, the hottest electronic cigarette is the smoke series, mainly with large appearance, large power and large smoke.
The main components of electronic cigarette include energy supply system, atomizer, smoke liquid, etc.
Atomizer is the core technology of electronic cigarette. Its main structure is a heating component. Its performance directly affects the atomization efficiency, aerosol characteristics, efficacy and safety of electronic cigarette liquid. According to the working principle, electronic atomizer can be divided into piezoelectric ultrasonic atomization, spray atomization, electromagnetic induction heating atomization and resistance wire heating atomization. Resistance wire heating atomization is the mainstream atomization technology in electronic cigarette products.
Cell is a kind of battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. Electronic cigarette battery is mainly lithium battery. Limited by the fast charging and discharging performance of lithium-ion battery, the user experience is not ideal.
The main components of electronic cigarette liquid include nicotine, atomizer, tobacco flavor components and additives. 1) Nicotine content is strictly controlled in e-cigarette liquid. Nicotine content of different brands ranges from 0-20mg / ml or volume fraction of 0-2.4%. 2) The atomizer is composed of propylene glycol, glycerol, water and other edible or medical grade substances. Glycerol and propylene glycol are the most common solvents. They can be used alone or mixed in a certain proportion. Other solvents such as polyethylene glycol, ethylene glycol, etc. 3) Theoretically, the flavor components that meet the food grade or pharmaceutical grade can be added to the electronic cigarette liquid to prepare different flavors. There are more than 7000 brands of electronic cigarette liquid on the market, such as classic tobacco flavor, mint flavor, coffee flavor, etc.
Development process of electronic cigarette
Herbert A. Gilbert, an American, first obtained the patented design of a "smokeless and non tobacco cigarette". In 2004, Han Li, a traditional Chinese medicine doctor in Beijing, obtained the invention patent of e-cigarette. E-cigarette came out and was sold by China Ruyan company the next year.
After several generations of upgrading, e-cigarettes sell well in the United States.
Electronic cigarette industry structure
The upstream market of e-cigarette industry chain mainly involves industries such as electric core, cigarette oil, heating components and control circuit. The manufacturing design of finished products in the middle reaches mainly involves e-cigarette product design, process manufacturing process and e-cigarette finished products, while the downstream demand market is dominated by smokers who need to quit smoking. The increasingly strong demand in Europe and America and the regulation of domestic policies make e-cigarette products present a global industrial chain pattern with manufacturing center in China and demand center in Europe and America. At present, most domestic e-cigarette manufacturers adopt OEM and ODM business models.
Advantages of disposable microphone electronic cigarette:
1. Few components are used and the price is cheap
2. There is no need for additional PCBA, and the microphone has its own LED display
3. Simple structure: Lithium Battery + mic / microphone + heating wire
Introduction to solution chip:
1. Scheme features:
• electronic cigarette mini pen appearance, which is very similar to the shape of a pen
• PCBA requirements are small due to structural constraints
• the scheme adopts single LED lamp for function or operation indication.
• with charging function
• the output port is the same as the charging port
• package: SOT23-5
2. Product Overview
It is a special ASIC for electronic cigarette controller. It is manufactured by advanced CMOS technology, integrated air flow sensor circuit, output power management, electronic smoke function control, charging management, status indication and protection circuit and other electronic smoke functions. It has low power consumption characteristics and wide working voltage range. It is applicable to the application fields of electronic cigarettes such as microphone electronic cigarettes.
3. Product features:
Special ASIC design is adopted, and there will be no crash that cannot be reset.
The chip integrates MOS tube, LED drive, air flow sensor identification circuit, charging management and other functions to realize the function of electronic cigarette on a single chip.
Static current: ≤ 5 μ A
The air flow sensor recognizes the change of external capacitance, realizes the recognition of smoking action, and has the function of anti blowback. Constant voltage output control.
Short circuit and undervoltage protection functions are included.
Intelligent power management function to automatically realize trickle, constant current and constant voltage charging.
The accuracy of charging voltage detection error is within 1%.
The anti-interference ability is strong, and the anti throw and fall will not trigger the smoking action, which is stable and reliable.
