An explosion-proof electronic cigarette

Abstract

The present invention provides an explosion-proof electronic cigarette, which includes an air inlet, an inhalation port, a battery, a housing, a controller, a heating wire, a safety protection capsule, and an e-liquid cup. The e-liquid cup is fixed in the housing through an installation groove. The safety protection capsule wraps around the battery. One end of the housing is connected to the air inlet, and the other end is connected to the inhalation port. The heating wire is placed in the e-liquid cup and electrically connected to the controller. The controller includes a battery control circuit and an explosion-proof circuit. By means of the safety protection capsule and the protective cover to buffer the impact force of the battery explosion and prevent debris and electrolyte from injuring people, the technical problem that the existing electronic cigarette has no explosion protection mechanism and thus has low safety is solved.

Description

Technical Field

[0001] The present invention relates to the field of electronic cigarette devices, and in particular to an explosion-proof electronic cigarette. Background Art

[0002] In a letter published in the New England Journal of Medicine in 2016, doctors at the University of Washington Medical Center described 15 patients who had experienced e-cigarette explosions in less than a year. Most of the accidents were related to burns, and nearly 30% of the patients suffered "explosion injuries", resulting in "tooth loss, traumatic scars and extensive soft tissue damage". The doctors wrote that flame burns require wound care and skin grafts.

[0003] An electronic cigarette is a device that uses electric energy to short-circuit a resistance wire to generate heat to evaporate e-liquid to produce smoke. It mainly consists of three parts: an e-liquid cartridge device for containing e-liquid, an evaporation device, and a battery rod. The battery rod can turn the e-liquid in the cartridge into mist.

[0004] The internal structure of the cigarette rod consists of a rechargeable battery and various electronic circuits. Most electronic cigarettes use lithium-ion and secondary battery power components. The battery is the largest component in terms of weight of the electronic cigarette, and the instantaneous release of battery energy storage is also the most fundamental reason for the great explosion power. There are two possibilities for battery explosion: one is internal short circuit, and the other is external short circuit. It may be caused by quality problems, improper operation, or external high temperature. For the safety hazards existing in electronic cigarettes, there has been no good solution in the market.

[0005] The patent document with the publication number CN208819948U discloses an interchangeable battery device for the safety and explosion protection of electronic cigarettes, including a main body mounting shell. Inside the main body mounting shell, a battery compartment is vertically arranged upward. A battery module is arranged in cooperation with the battery compartment. A battery cover is arranged above the main body mounting shell in cooperation with the battery module. Three groups of elastic electrodes are equidistantly arranged at the right end of the battery compartment. The battery module includes a plastic shell arranged outside. Compared with a steel shell battery, due to the use of plastic protection, the pressure inside the battery cell is more likely to be released, avoiding the huge power generated by the explosion of the battery cell caused by high pressure inside the battery cell. The soft-pack battery cell is modularized and used in an electronic cigarette device, which can not only meet the advantages of detachable battery replacement, but also avoid the huge power caused by the explosion of the steel shell battery in an abnormal state, and quickly export and decompress the internal pressure and the generated gas. However, this utility model cannot avoid the harm of the airflow and electrolyte generated by the explosion to the user's mouth. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: the technical problem that the existing electronic cigarette has low safety due to the lack of an explosion protection mechanism.

[0007] In order to solve the above technical problems, the present invention provides an explosion-proof electronic cigarette, including an air inlet, an air inlet, a battery, a shell, a controller, a heating wire, a safety protection bag and a smoke oil cup. The smoke oil cup is fixed in the shell through a mounting groove, and the safety protection bag is wrapped on the battery. One end of the shell is connected to the air inlet, and the other end is connected to the air inlet. The heating wire is placed in the smoke oil cup and is electrically connected to the controller. The controller includes a battery control circuit and an explosion-proof circuit. The explosion-proof circuit controls the opening of the side of the shell and the closing of the air inlet by detecting the battery temperature. When the battery temperature is too high or short-circuited, the space is increased in time to prevent the battery energy from being rapidly released in the narrow internal space of the electronic cigarette. At the same time, the air inlet is closed to prevent the user from inhaling high-temperature gas or electrolyte leaked by battery disintegration. The safety protection bag is made of flame-retardant material, which can prevent fragments from flying to both sides and the combustion of hydrogen generated by electrode decomposition.

[0008] Preferably, the device further comprises a cigarette box and a sterilization module, wherein the sterilization module comprises an ultraviolet lamp installed in the cigarette box.

[0009] Preferably, the housing comprises a fixed part and a movable part, and the fixed part is snap-connected with the movable part.

[0010] Preferably, it also includes a protective cover, which is installed between the battery and the e-liquid cup. The movable part is connected to the protective cover through a spring. The spring tightens the movable part after being energized. The protective cover is provided with a through hole for wiring. The protective cover is mainly used to block the fragments generated when the battery explodes. The hemispherical protective cover can provide reliable protection for a large area. At the same time, since the shell is divided into two parts, a structure is required to increase the mechanical strength of the shell. The protective cover can prevent the movable part of the shell from being squeezed and deformed inward when it is stressed. The spring is connected to the controller. During normal operation, current flows through the spring, forming a tensile force that contracts inward, tightening the movable part and contracting itself. When the battery explodes or the controller detects that the temperature is too high, the spring loses power, the movable part opens, and the energy released in the closed small space is converted to release in the open larger space.

[0011] Preferably, a second air inlet is provided on the corresponding shell below the protective layer. Due to the presence of the protective cover, the gas flow channel between the air inlet and the air inlet at one end of the shell is narrow, so the second air inlet is added to ensure smooth air inhalation.

[0012] Preferably, the explosion-proof circuit includes a current sampling module and a temperature detection module, wherein the current sampling module collects the battery output current and the temperature detection module detects the battery surface temperature. The battery output current is collected through a sampling resistor, and the battery surface temperature is detected through a temperature sensor to provide a trigger signal for the controller to execute an explosion warning.

[0013] Preferably, the safety protection bladder has a multi-layer folding structure. The opening of the safety protection bladder is sleeved on the side of the battery, and the end of the safety protection bladder is connected to the movable part by glue. Connecting the end of the safety protection bladder to the movable part by glue can ensure that when the battery releases energy, the safety protection bladder rushes out of the shell, avoiding being blocked in the shell and causing decompression failure.

[0014] Preferably, the air inlet is movably connected to the symmetrically distributed left baffle and right baffle. An electromagnet is provided at the lower end of the installation groove, and the upper ends of the left baffle and the right baffle are connected to the electromagnet by magnetic attraction. The sum of the lengths of the left baffle and the right baffle is equal to the inner diameter of the lower opening of the shell, and they fall just to close the lower end of the shell after losing the magnetic attraction of the electromagnet.

[0015] Preferably, the controller further includes an e-liquid detection circuit for detecting the remaining amount of e-liquid. The e-liquid detection circuit calculates the remaining amount of e-liquid by detecting the heating rate of the heating wire. When passing a constant current, the faster the temperature of the heating wire rises, the less the remaining amount of e-liquid. Based on this principle, it is not necessary to install a liquid level sensor to detect the remaining amount of e-liquid.

[0016] The substantial effect of the present invention is that the impact force of the battery explosion is buffered by the safety protection bladder and the protective cover, preventing fragments and electrolyte from hurting people, and solving the technical problem of low safety of existing electronic cigarettes without an explosion protection mechanism. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of Embodiment 1.

[0018] In the figure: 1. Controller, 2. LED lamp, 3. First air inlet, 4. Fixed part, 5. Movable part, 6. Safety protection bladder, 7. Battery, 8. Protective cover, 9. Second air inlet, 10. Heating wire, 11. Air inlet, 12. Left baffle, 13. Right baffle, 14. E-liquid cup, 15. Spring. Detailed Embodiments

[0019] The following will further specifically describe the specific embodiments of the present invention through specific embodiments and in combination with the drawings.

[0020] Embodiment 1 is as Figure 1As shown in the figure, it includes a first air inlet 3, a second air inlet 9, an inhalation port 11, a battery 7, an LED lamp 2, a housing, a controller 1, a heating wire 10, a safety protection bag 6, a protective cover 8, and an e-liquid cup 14. The e-liquid cup 14 is fixed in the housing through a mounting groove. The safety protection bag 6 wraps around the battery. One end of the housing is connected to the first air inlet 3, and the other end is connected to the inhalation port 11. The heating wire 10 is placed in the e-liquid cup 14 and electrically connected to the controller 1. The controller 1 includes a battery control circuit and an explosion-proof circuit. The battery control circuit detects the remaining power of the battery 7 and feeds it back to the user through the color of the LED lamp 2. The explosion-proof circuit includes a current sampling module and a temperature detection module. The current sampling module collects the battery output current through a sampling resistor. When the current exceeds 2.5 A, it is judged that the electrode is short-circuited. The temperature detection module detects the surface temperature of the battery 7 through a temperature sensor. The temperature threshold is set at 75 degrees Celsius, providing a trigger signal for the controller 1 to execute explosion warning. The housing includes a fixed part 4 and a movable part 5, and the two parts are provided with a matching concave-convex fitting structure. The protective cover 8 is installed between the battery and the e-liquid cup 14. The movable part is connected to the protective cover 8 through a spring 15. The spring 15 tightens the movable part after being energized. The protective cover 8 is provided with through holes for wiring. The safety protection bag 6 made of PROBAN flame-retardant fabric is sleeved on both sides of the battery, and the laminated stacking increases the surface area of the protection bag, so that the volume reaches 3.5 cubic decimeters when the protection bag is completely filled. The inhalation port 11 is movably connected to a symmetrically distributed left baffle 12 and right baffle 13. An electromagnet is provided at the lower end of the mounting groove. The upper ends of the left baffle 12 and the right baffle 13 are connected to the electromagnet through magnetic attraction. The sum of the lengths of the left baffle 12 and the right baffle 13 is 2.8 cm, and the inner diameter of the lower opening of the housing is also 2.8 cm. After losing the magnetic attraction of the electromagnet, it falls just to close the lower end of the housing. When the battery catches fire, the electromagnet immediately loses power. Even if the electromagnet has residual magnetism, the installation direction of the baffle is such that when the impact air flow arrives, the baffle falls under the action of the impact force to complete the sealing process.

[0021] When the e-cigarette battery explodes, the spring 15 loses power and rebounds, and the airbag inflates and squeezes outward. Under various outward acting forces, the opening action of the movable part has excellent reliability. The splashing electrolyte is blocked by the airbag and will not directly contact the human body to cause harm. Even if the user is in the process of smoking when the baffle falls, they will not inhale high-temperature gas or electrolyte.

[0022] The above embodiments are only a preferred solution of the present invention, and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. An explosion-proof electronic cigarette, comprising an air inlet, an inhalation port, a battery and a housing, characterized in that: It further includes a controller, a heating wire, a safety protection bladder, and an e-liquid cup. The e-liquid cup is fixed in the housing through a mounting groove. One end of the housing is connected to the air inlet, and the other end is connected to the suction port. The heating wire is placed in the e-liquid cup and electrically connected to the controller. The safety protection bladder wraps around the battery. The controller includes a battery control circuit and an explosion-proof circuit; a protective cover is installed between the battery and the e-liquid cup; the suction port is movably connected to symmetrically distributed left and right baffles. An electromagnet is provided at the lower end of the mounting groove. The upper ends of the left baffle and the right baffle are connected to the electromagnet through magnetic attraction.

2. The explosion-proof electronic cigarette according to claim 1, characterized in that: It further includes a cigarette case and a sterilization module. The sterilization module includes an ultraviolet lamp, and the ultraviolet lamp is installed in the cigarette case.

3. The explosion-proof electronic cigarette according to claim 2, characterized in that: The housing includes a fixed part and a movable part, and the fixed part is snap-connected to the movable part.

4. The explosion-proof electronic cigarette according to claim 3, characterized in that: It further includes a protective cover. The protective cover is installed between the battery and the e-liquid cup. The movable part is connected to the protective cover through a spring. The spring tightens the movable part after being energized. The protective cover is provided with through holes for wiring.

5. The explosion-proof electronic cigarette according to claim 3, characterized in that: It further includes a second air inlet, and the second air inlet is provided on the housing corresponding to the lower part of the protective layer.

6. The explosion-proof electronic cigarette according to claim 1 or 3, characterized in that: The explosion-proof circuit includes a current sampling module and a temperature detection module. The current sampling module collects the magnitude of the current output by the battery, and the temperature detection module detects the surface temperature of the battery.

7. The explosion-proof electronic cigarette according to claim 3, characterized in that: The safety protection bladder has a multi-layer folding structure. The opening of the safety protection bladder is sleeved on the side of the battery, and the end of the safety protection bladder is connected to the movable part through an adhesive.

8. The explosion-proof electronic cigarette according to claim 6, characterized in that: The suction port is movably connected to symmetrically distributed left and right baffles. An electromagnet is provided at the lower end of the mounting groove. The upper ends of the left baffle and the right baffle are connected to the electromagnet through magnetic attraction.

9. The explosion-proof electronic cigarette according to any one of claims 1 to 5, characterized in that: The controller further includes an e-liquid detection circuit for detecting the remaining amount of e-liquid. The e-liquid detection circuit calculates the remaining amount of e-liquid by detecting the heating rate of the heating wire.

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