Electronic cigarette sensor capable of emitting light from two sides

Abstract

An electronic cigarette sensor capable of emitting light on two sides comprises a packaging support, an upper cover, a lower cover, a protective net, a micro electro mechanical sensor and an ASIC chip, the packaging support is provided with a cavity with an upper opening, a high step is arranged on one side of the bottom wall of the cavity, and a gas guide channel penetrating through the high step and the bottom wall of the packaging support is arranged on the high step. A micro-electro-mechanical sensor is further arranged on the high step, a low step is arranged at the position, away from the high step, in the cavity, the ASIC chip is fixed to the low step, an upper cover matched with the cavity is arranged above the packaging support, the upper cover is provided with an air suction hole, a lower cover matched with the air guide channel is arranged below the packaging support, the lower cover is provided with an air inlet hole, and the air inlet hole is communicated with the air suction hole. Protective nets are arranged on the upper cover and the lower cover, a plurality of groups of bonding pads are embedded in the back surface and the cavity of the packaging bracket, an internal LED lamp is also arranged in the packaging bracket, and an external LED lamp is embedded below the packaging bracket and is fixed with the bonding pads through SMT (Surface Mount Technology).

Description

Technical Field

[0001] The utility model relates to the technical field of electronic cigarette sensors, in particular to an electronic cigarette sensor capable of emitting light on both sides. Background Art

[0002] With the development of the e-cigarette industry, e-cigarette sensors have also gone through multiple versions and are now a stable component. The electret e-cigarette sensor is essentially an airflow sensor and an integrated airflow sensor solution, including a micro-electromechanical sensor and a corresponding ASIC control chip. The electret e-cigarette sensor can integrate e-cigarette functions such as capacitive sensor circuits, output power management, and status indication. The ASIC control chip is a dedicated chip for rechargeable e-cigarette sensors. The chip integrates MOS tubes, airflow sensing circuits, charging management circuits, short-circuit protection circuits, high-current protection circuits, battery protection circuits, etc. The output of different functions has different LED status indications. The main function output corresponds to the following lighting effects: 1. When the output current is 2.5A (±0.5A) or above, the LED flashes 3 times and is in a high-current protection state; 2. The chip is powered on and the IC self-checks, and the LED flashes 3 times before entering standby mode; 3. When the atomizer is added, When smoking, IC outputs constant voltage 3.6V to start the atomizer. During the smoking process, LED gradually lights up and goes out. At the same time, when the LED light is on, the atomizer heats up and produces smoke. When the LED light is off, the atomizer does not heat up and no smoke is produced. 4. During the smoking process, if the duration of a puff exceeds 8 seconds, the LED goes out, and the atomizer does not heat up, and the smoke stops automatically. 5. When the chip detects that the battery voltage is lower than 3.3V during smoking, the LED light flashes 10 times in a row. At this time, it is in a low voltage alarm state and can only be used after charging. 6. The cigarette holder is connected to the charger, the LED light is on, and it is in the charging state. 7. When the battery voltage is lower than 2.8v, it is trickle charging; when it is greater than 2.8v, it starts to charge with constant current, and the charging voltage reaches 4.2v (±0.05), and the LED light goes out; if it is not fully charged, and the battery voltage has reached or exceeded 4.1v (±0.07) at this time, the indicator light will not be displayed during charging, and charging will continue until the battery is fully charged. The internal structure of the electret electronic cigarette sensor includes a dustproof net, a shell, a plate, a gasket, a cavity, a diaphragm and a copper ring, an ASIC chip, a capacitor, a circuit board, an LED lamp bead, and an external wiring. From the structure, it can be seen that the structure of the electret microphone on the market is complex, presenting a stacked "hamburger" structure of the air pressure sensor. The back of the circuit board uses high-temperature solder paste to mount the LED lamp bead through the SMT patch method. For this type of electret structure electronic cigarette sensor, the LED lamp bead can only be attached to the back of the circuit board in one direction.

[0003] The above structure also has the following disadvantages:

[0004] 1. The LED indicator can only be attached to the back of the circuit board in one direction, and cannot be used for SMT patch sensor applications;

[0005] 2. The structural characteristics of the electret assembly itself are that the aluminum-magnesium alloy shell and the circuit board module are combined by riveting. This method causes a certain height of space distance between the circuit board pad and the edge of the shell, which makes it impossible to mount it on other module circuit boards by SMT patch method;

[0006] 3. The back of the electret circuit board is compact. When using a soldering iron to solder external wiring, the high-temperature soldering iron tip can easily touch the LED components and cause damage to them;

[0007] 4. The external LED indicator light leads to low efficiency and low yield rate of external welding operations;

[0008] 5. The electret structure is not suitable for the packaging mode of reverse start logic design;

[0009] 6. The electret shell structure has no possibility of built-in LED lighting, and it is impossible to experiment with the lighting inside the cavity. Utility Model Content

[0010] 1. Technical issues to be resolved

[0011] The main purpose of the utility model is to provide an electronic cigarette sensor capable of double-sided illumination, so as to solve the background technology and application difficulties.

[0012] (II) Technical solution

[0013] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electronic cigarette sensor capable of double-sided illumination, characterized in that it comprises a packaging bracket, an upper cover, a lower cover, a protective net, a micro-electromechanical sensor and an ASIC chip, wherein the packaging bracket is provided with a cavity with an upper opening, a high step is provided on one side of the bottom wall of the cavity, an air guide channel penetrating the high step and the bottom wall of the packaging bracket is provided on the high step, the micro-electromechanical sensor is also provided on the high step, a low step is provided in the cavity away from the high step, the ASIC chip is fixed on the low step, an upper cover adapted to the cavity is provided above the packaging bracket, the upper cover is provided with an air intake hole, a lower cover adapted to the air guide channel is provided below the packaging bracket, the lower cover is provided with an air inlet hole, a protective net is provided on the upper cover and the lower cover, a plurality of groups of pads are embedded on the back of the packaging bracket and in the cavity, a built-in LED lamp is also provided in the packaging bracket, an external LED lamp is embedded below the packaging bracket and is fixed to the pad by SMT mounting.

[0014] The utility model has the following improvements: the double-sided light emitting LED lamp can be mounted on the external soldering pad of the packaging bracket, and can also be mounted on the internal soldering pad of the cavity of the packaging bracket.

[0015] The utility model has the following improvements: the micro-electromechanical sensor is fixed on the high step of the packaging bracket through a low-stress colloid; and the ASIC chip is fixed on the low step of the packaging bracket through a high-heat-conducting colloid.

[0016] The utility model has the following improvements: the micro-electromechanical sensor and the ASIC chip are connected by low-impedance bonding wires; the capacitance change signal of the micro-electromechanical sensor is transmitted to the ASIC chip for processing through the bonding wires; the ASIC chip and the pad are connected by bonding wires made of high thermal conductivity and high electrical conductivity materials, and the ASIC chip and the bonding wires are sealed with a high thermal conductivity sealant.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides an electronic cigarette sensor capable of double-sided illumination, which has the following beneficial effects:

[0019] 1. The LED indicator light can be installed in both directions, with strong flexibility and variability, strong application scenarios, and can also emit light in both directions. The back-lighting indication is suitable for the user end of the electret electronic cigarette in the existing market, and the front-lighting indication is suitable for the user end of the electronic cigarette sensor installed by SMT patch mode. It has strong applicability, comprehensive applicable market, and high acceptability;

[0020] 2. The LED indicator is built into the package bracket cavity. The electronic cigarette sensor of this structure can be mounted on the external module circuit using SMT, which increases the contact area between the electronic cigarette sensor and the external module pad, improves the thermal conductivity between components, and increases the heat dissipation function; solves the heat dissipation difficulties of ASIC components and improves the power output of ASIC;

[0021] 3. The LED indicator light is built into the package bracket cavity and can be mounted on the external module by SMT patch, so the electret external wiring material can be saved and the cost of external wiring can be reduced;

[0022] 4. The LED indicator is built into the package bracket cavity, and the SMT patch method can reduce the quality risk of accidentally damaging the LED components during the external electret welding and external wiring operation;

[0023] 5. The LED indicator is built into the package bracket cavity, and the SMT patch method can solve the difficulties of low efficiency and low yield rate due to the electret welding external line operation;

[0024] 6. The LED indicator light is built into the package bracket cavity, and the upper cover in the overall structure is changed to a light-transmitting and high-temperature resistant polycarbonate material, the cost of which is much lower than that of a metal upper cover;

[0025] 7. For the design of ASIC chips with reverse start logic, this type of electronic cigarette sensor needs to be started by inhaling from the back, and the installation direction is opposite to that of the electret. However, this type of electronic cigarette sensor can be mounted on an external module, and an LED light effect indicator is required at the tail of the electronic cigarette. The LED indicator light is built into the package bracket cavity, which perfectly solves the difficulty of LED light effect indication of the reverse start logic MEMS package. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the cross section of the structure of the utility model;

[0027] Figure 2 This is a bottom view schematic diagram of the external wiring of the utility model structure;

[0028] Figure 3 This is a top view of the utility model structure with the upper cover opened;

[0029] Figure 4 It is a side view schematic diagram of the structure of the utility model;

[0030] Figure 5 This is a top view schematic diagram of the external wiring of the structure of the utility model;

[0031] Figure 6 This is a top view schematic diagram of the external wiring using a new structure.

[0032] In the figure: 1. Packaging bracket; 2. Upper cover; 3. Lower cover; 4. MEMS sensor; 5. ASIC chip; 6. Protective net; 7. Bonding wire; 8. Thermal conductive encapsulation glue; 9. High step; 10. Low step; 11. Solder pad; 12. Built-in LED light; 13. External LED light; 14. Air intake hole; 15. Air intake hole. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-6, an electronic cigarette sensor capable of double-sided illumination, comprising a packaging bracket 1, an upper cover 2, a lower cover 3, a protective net 6, a micro-electromechanical sensor 4 and an ASIC chip 5, wherein the packaging bracket 1 is provided with a cavity with an upper opening, a high step 9 is provided on one side of the bottom wall of the cavity, an air guide channel penetrating the high step 9 and the bottom wall of the packaging bracket 1 is provided on the high step 9, the micro-electromechanical sensor 4 is also provided on the high step 9, a low step 10 is provided in the cavity away from the high step 9, the ASIC chip 5 is fixed on the low step 10, An upper cover 2 adapted to the cavity is arranged above the packaging bracket 1, and the upper cover 2 is provided with an air intake hole 14. A lower cover 3 adapted to the air guide channel is arranged below the packaging bracket 1, and the lower cover 3 is provided with an air inlet hole 15. A protective net 6 is arranged on the upper cover 2 and the lower cover 3. Several groups of solder pads 11 are embedded on the back side and the cavity of the packaging bracket 1. A built-in LED lamp 12 is also arranged in the packaging bracket 1. An external LED lamp 13 is embedded below the packaging bracket 1 and is fixed to the solder pad 11 through SMT mounting.

[0035] In view of the backward electret electronic cigarette sensor packaging form in the background technology, the utility model uses the MEMS packaging mode. MEMS packaging is a packaging method that combines a microelectronic technology with a microcomputer technology. The main features of the packaging are: small size, greatly improved performance and reliability, and greatly reduced power consumption and cost. The more microcomputerized and integrated MEMS packaging is a key factor in the design and manufacture of MEMS chips. The optimal packaging mode can enable MEMS products to play their due functions. The purpose of MEMS packaging is: 1. The microsensor chip packaging provides one or more environmental pathways; 2. For those microsensors that are particularly sensitive to stress, the stress from the packaging should be small; 3. The packaging and packaging materials should not have adverse effects on the environment; 4. The packaging should keep the microsensor and its electronic devices from being adversely affected by the environment; 5. The packaging must provide a path to the outside world; the main processes of the MEMS packaging process include: chip pasting, wire bonding, capping and other key basic processes.

[0036] The micro-electromechanical sensor 4 is fixed on the high step 9 of the packaging bracket 1 through a low-stress colloid; the ASIC chip 5 is fixed on the low step 10 of the packaging bracket 1 through a high-thermal conductive colloid.

[0037] The MEMS sensor 4 is connected to the ASIC chip 5 via a low-impedance bonding wire 7; the capacitance change signal of the MEMS sensor 4 is transmitted to the ASIC chip 5 for processing via the bonding wire 7; the ASIC chip 5 is connected to the pad 11 using a bonding wire 7 made of a high thermal conductivity and high electrical conductivity material, and then the ASIC chip 5 and the bonding wire 7 are sealed using a high thermal conductivity sealant.

[0038] The double-sided light emitting LED indicator light can be mounted on the external solder pad 11 of the packaging bracket 1 , or can be mounted on the internal solder pad 11 of the cavity of the packaging bracket 1 .

[0039] The utility model adopts a micro-electromechanical sensor 4+ASIC chip 5+special process packaging bracket 1, chip pasting: the micro-electromechanical sensor 4 is fixed to the right side of the cavity of the packaging bracket 1 through a low-stress colloid; the ASIC chip 5 is bonded to the bottom of the left side of the packaging bracket 1 through a high thermal conductivity colloid, and the copper foil pad 11 in the cavity can use SMT to mount other components, such as LED, filter capacitor, resistor and other components; wire bonding: the micro-electromechanical sensor 4 and the ASIC chip 5 are connected through a low-impedance bonding wire 7; the capacitance change signal of the micro-electromechanical sensor 4 is transmitted to the ASIC chip 5 for processing through the bonding wire 7; the ASIC chip 5 and the pad 11 are connected using a bonding wire 7 made of a high thermal conductivity and high electrical conductivity material, and then the ASIC chip 5 and the bonding wire 7 are sealed with a high thermal conductivity sealant; the ASIC transmits the electrical signal to be output through the bonding wire 7, and the high thermal conductivity wire and colloid can accelerate the evacuation of heat and improve the power conversion rate of the ASIC chip 5.

[0040] Sealing cover: After the components in the cavity of the packaging bracket 1 are installed, the one-piece upper and lower covers 3 are respectively mounted on the corresponding positions of the top and bottom of the bracket, and the one-piece upper and lower covers 3: the upper and lower covers 3 are affixed with a protective net 6 coated with a nanofilm; the mainstream electronic cigarette sensors on the market are currently electret structures, but MEMS packaging structure electronic cigarette sensors will become an inevitable development trend in the field of electronic cigarette sensors in the future. In order to adapt to the use of existing main electret users and module installation, the packaging bracket 1 of the utility model uses a stamping and reverse stretching process to generate a back LED functional pad 11, that is, the eleventh pad 11, so that LED pads 11 are provided on the back and in the cavity, and the LED indicator light can be external or internal. LED components are mounted, facing the electret users in the electronic cigarette sensor market, and external LED components can be suitable for electret users.

[0041] The use of MEMS packaging in combination with the packaging bracket 1 can realize SMT patch mounting on the external module, without the need to connect to the external module by welding external wires, reducing the cost of external copper wires. When the back pad 11 is used as an SMT patch, the LED lighting effect indication function is designed in the cavity of the packaging bracket 1, and the LED built-in pad 11 uses the SMT process to mount LED components; the upper cover 2 in the overall structure is changed to a light-transmitting and high-temperature resistant polycarbonate material, and the cost of this material is much lower than the upper cover 2 made of metal; this structural design can solve the difficulty of the patch-type electronic cigarette sensor with its own LED lighting effect indication function, and the above design can be used to effectively solve the background technology and application difficulties.

[0042] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0043] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0044] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0045] Although the embodiments of the utility model have been shown and described, it is understood that a person of ordinary skill in the art can make various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is limited by the attached claims and their equivalents. The above embodiments only express several preferred implementations of the utility model, and the description is more specific and detailed. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as an exclusion of other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept of this article through the above teachings or the technology or knowledge of the relevant field, and it cannot be understood as a limitation on the scope of the utility model. It should be pointed out that a person of ordinary skill in the art can make several deformations and improvements without departing from the concept of the utility model. The changes and modifications made by the personnel in the field do not depart from the spirit and scope of the utility model, and these belong to the scope of protection of the attached claims of the utility model. Therefore, the scope of protection of the utility model patent shall be subject to the attached claims.

Claims

1. A double-sided luminous electronic cigarette sensor, It is characterized in that The invention comprises a packaging support (1), an upper cover (2), a lower cover (3), a protective net (6), a micro-electromechanical sensor (4) and an ASIC chip (5); the packaging support (1) is provided with a cavity with an upper opening; a high step (9) is provided on one side of the bottom wall of the cavity; an air guide channel penetrating the high step (9) and the bottom wall of the packaging support (1) is provided on the high step (9); the micro-electromechanical sensor (4) is also provided on the high step (9); a low step (10) is provided in the cavity away from the high step (9); the ASIC chip (5) is fixed on the low step (10); the packaging support (1) An upper cover (2) adapted to the cavity is arranged above, the upper cover (2) is provided with an air intake hole (14), a lower cover (3) adapted to the air guide channel is arranged below the packaging bracket (1), the lower cover (3) is provided with an air intake hole (15), a protective net (6) is arranged on the upper cover (2) and the lower cover (3), a plurality of groups of solder pads (11) are embedded on the back side and in the cavity of the packaging bracket (1), a built-in LED lamp (12) is also arranged in the packaging bracket (1), and an external LED lamp (13) is embedded below the packaging bracket (1) and is fixed to the solder pad (11) by SMT mounting.

2. The double-sided luminous electronic cigarette sensor according to claim 1, It is characterized in that The double-sided light emitting LED indicator light can be mounted on an external soldering pad (11) of the packaging bracket (1), or mounted on an internal soldering pad (11) of the cavity of the packaging bracket (1).

3. The double-sided luminous electronic cigarette sensor according to claim 1, It is characterized in that The micro-electromechanical sensor (4) is fixed on the high step (9) of the packaging bracket (1) through a low-stress colloid; the ASIC chip (5) is fixed on the low step (10) of the packaging bracket (1) through a high-thermal conductive colloid.

4. The double-sided luminous electronic cigarette sensor according to claim 1, It is characterized in that The micro-electromechanical sensor (4) and the ASIC chip (5) are connected via a low-impedance bonding wire (7); the capacitance change signal of the micro-electromechanical sensor (4) is transmitted to the ASIC chip (5) for processing via the bonding wire (7); the ASIC chip (5) and the pad (11) are connected via a bonding wire (7) made of a high thermal conductivity and high electrical conductivity material, and the ASIC chip (5) and the bonding wire (7) are then sealed using a high thermal conductivity sealant.

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