CN210775134U - Mobile power supply device with gas detection function - Google Patents

Abstract

A mobile power supply device with gas detection includes: the device body is provided with a vent, at least one connecting port and an accommodating chamber; at least one gas detection module assembled in the accommodating chamber of the device body; a drive control board assembled in the containing chamber of the device body; the power supply module is positioned on the drive control board and is electrically connected with the drive control board; and the microprocessor is positioned on the driving control board, is electrically connected with the driving control board, can control the driving signal of the gas detection module to detect and start the operation, converts the detection data of the gas detection module into detection data to be stored and transmitted outwards, can transmit the detection data outwards to a mobile device for processing and application, and transmits the detection data outwards to an external device to be stored.

Description

Power bank device with gas detection

technical field

This case is about a mobile power supply device with gas detection, especially a thin, portable and gas detection mobile power supply device with gas detection.

Background technique

Modern people pay more and more attention to the quality of gases around their lives, such as carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5, nitric oxide, sulfur monoxide and other gases, and even in the gas The particles contained will affect human health when exposed in the environment, and even endanger life seriously. Therefore, the quality of ambient gases has attracted the attention of various countries. How to detect and avoid remoteness is urgently needed at present, which is a topic of current attention.

How to confirm the quality of the gas, it is feasible to use a gas sensor to detect the surrounding gas. If the detection information can be provided immediately to warn people in the environment, it can be prevented or escaped immediately to avoid being exposed to the gas in the environment. Exposure causes human health effects and injuries, and the use of gas sensors to detect the surrounding environment can be said to be a very good application.

However, for portable devices such as mobile devices and mobile power supply devices that modern people carry when they go out, it is very important to embed the gas detection module on the portable device to detect the gas in the surrounding environment. The development trend of portable devices is light and thin. How to reduce the thickness of the gas detection module and integrate it into the mobile power supply device of the portable device is an important issue developed in this case.

Utility model content

The main purpose of this case is to provide a mobile power supply device with gas detection. The gas detection module is embedded in the device to provide real-time gas detection anywhere, and has the benefits of real-time notification and warning of the quality of the gas in the surrounding environment.

A broad implementation aspect of the present application is a mobile power device with gas detection, comprising: a device body having a vent, at least one connection port and a accommodating chamber, the vent communicating with the accommodating chamber, for introducing gas into the accommodating chamber; at least one gas detection module is assembled in the accommodating chamber of the device body, so as to introduce gas into the interior for detecting the particle size and concentration of suspended particles in the gas, and outputting a detection data; a driving control board assembled in the accommodating chamber of the device body, and the gas detection module is positioned on the upper part to be electrically connected with it; a power module is positioned on the driving control board It is electrically connected to the above and can store an electrical energy and output the electrical energy to the outside; a microprocessor is positioned and arranged on the driving control board and is electrically connected to it, and can detect and start the operation by controlling the driving signal of the gas detection module , and convert the detection data of the gas detection module into a detection data for storage and external transmission, and can be externally transmitted to a mobile device processing application, and externally transmitted to an external device to store the detection data.

Description of drawings

FIG. 1A is a schematic diagram of the appearance of a preferred embodiment of a mobile power device with gas detection.

FIG. 1B is a schematic diagram of the appearance of another preferred embodiment of the mobile power device with gas detection.

FIG. 1C is a schematic cross-sectional view of the mobile power device with gas detection in the present case.

FIG. 2A is a three-dimensional schematic diagram of the appearance of the gas detection module of the present invention.

FIG. 2B is a three-dimensional schematic diagram of the appearance of the gas detection module of the present invention from another angle.

FIG. 2C is an exploded perspective view of the gas detection module of the present invention.

FIG. 3A is a three-dimensional schematic diagram of the base of the present invention.

FIG. 3B is a three-dimensional schematic view of the base of the present invention from another angle.

FIG. 4 is a three-dimensional schematic diagram of the base of the present invention accommodating the laser component and the particle sensor.

FIG. 5A is an exploded perspective view of the piezoelectric actuator combined base of the present invention.

FIG. 5B is a three-dimensional schematic diagram of the piezoelectric actuator combined with the base of the present invention.

FIG. 6A is an exploded perspective view of the piezoelectric actuator of the present invention.

FIG. 6B is an exploded perspective view of the piezoelectric actuator of the present invention from another angle.

FIG. 7A is a schematic cross-sectional view of the piezoelectric actuator of the present invention combined with the bearing area of the air guide element.

FIG. 7B and FIG. 7C are schematic diagrams illustrating the operation of the piezoelectric actuator of the present case in FIG. 7A .

8A to 8C are schematic diagrams of gas paths of the gas detection module.

FIG. 9 is a schematic diagram of the beam path emitted by the laser assembly of the present invention.

FIG. 10A is a schematic cross-sectional view of the MEMS pump of the present invention.

FIG. 10B is an exploded schematic diagram of the microelectromechanical pump of the present invention.

11A to 11C are schematic diagrams of the operation of the MEMS pump.

FIG. 12 is a block diagram showing the relationship between the drive control board of the mobile power device with gas detection and the related construction and configuration.

Description of reference numerals

100: Device body

100a: Air vent

100b: connection port

100c: housing chamber

10: Gas detection module

20: Drive control board

30: Power Module

30a: rechargeable battery

40: Microprocessor

40a: Communicator

50: Power supply device

60: Mobile Devices

70: External device

1: base

11: First surface

12: Second surface

13: Laser setting area

14: Intake groove

14a: Air intake

14b: Translucent window

15: Air guide assembly bearing area

15a: Air vent

15b: Positioning the notch

16: Air outlet groove

16a: Air outlet

16b: first interval

16c: Second interval

17: Light Trap Zone

17a: Optical trap structure

2: Piezoelectric actuator

21: Air blow hole sheet

210: Suspension Tablets

211: Hollow Hole

212: Connector

213: void

22: Cavity frame

23: Actuator

231: Piezoelectric Carrier

2311: Piezo Pins

232: Adjust the resonance plate

233: Piezo Plate

24: Insulation frame

25: Conductive Frame

251: Conductive pins

252: Conductive Electrodes

26: Resonance Chamber

27: Airflow Chamber

2a: MEMS pump

21a: first substrate

211a: Inflow hole

212a: first surface

213a: Second surface

22a: first oxide layer

221a: Busway

222a: Convergence Chamber

23a: Second substrate

231a: Silicon Wafer Layer

2311a: Actuator

2312a: Peripheral

2313a: Connections

2314a: Fluid Channels

232a: second oxide layer

2321a: Vibration Chamber

233a: Silicon layer

2331a: Perforation

2332a: Vibration Division

2333a: Fixed part

2334a: Third Surface

2335a: Fourth Surface

24a: Piezoelectric components

241a: lower electrode layer

242a: Piezoelectric layer

243a: Insulation layer

244a: upper electrode layer

3: Drive circuit board

4: Laser components

5: Particulate sensor

6: Outer cover

61: Side panels

61a: Air intake frame port

61b: Air outlet frame

7a: First VOC sensor

7b: Second VOC sensor

D: light trap distance

H: Thickness

L: length

W: width

Detailed ways

Some typical embodiments embodying the features and advantages of the present case will be described in detail in the description of the latter paragraph. It should be understood that this case can have various changes in different aspects, all of which do not depart from the scope of this case, and the descriptions and diagrams therein are essentially used for illustration rather than limiting this case.

The mobile power supply device with gas detection described in this case can be a mobile power supply device in the form of a mobile phone case as shown in a preferred embodiment as shown in FIG. A form of mobile power device embodiment. 1A , FIG. 1B , FIG. 1C and FIG. 12 , the present application provides a mobile power supply device with gas detection, including a device body 100 , at least one gas detection module 10 , a driving control board 20 , and a power supply module 30 , a microprocessor 40 . The above-mentioned device body 100 has a vent 100a, at least one connection port 100b, and an accommodating chamber 100c. The vent 100a communicates with the accommodating chamber 100c for introducing gas into the accommodating chamber 100c, and the connecting port 100b acts as an action The communication connection of the device 60 . At least one gas detection module 10 is set in the accommodating chamber 100c of the device body 100 to introduce gas into the interior for detecting the particle size and concentration of suspended particles in the gas, and outputting detection data. A plurality of gas detection modules 10 may also be assembled in the accommodating chamber 100c of the device body 100 to detect the particle size and concentration of suspended particles in the gas. The driving control board 20 is assembled in the accommodating chamber 100 c of the device body 100 , and the gas detection module 10 is positioned on the driving control board 20 and electrically connected thereto. The power module 30 is positioned on the drive control board 20 and is electrically connected to it, and can transmit power to the power module 30 through a power supply device 50 outside the device body 100 , so that the power module 30 can store electrical energy and output electrical energy to the outside. The power supply module 30 includes at least one rechargeable battery 30a for storing electrical energy, which may be transmitted by wire or wirelessly. The microprocessor 40 is positioned and arranged on the driving control board 20 and is electrically connected to it, and can detect and start the operation by controlling the driving signal of the gas detection module 10, and convert the detection data of the gas detection module 10 into a detection data storage, and the microprocessor 40 can process the detection data. The device 40 includes a communicator 40a for receiving the detection data output by the microprocessor 40, and can externally transmit the detection data to a mobile device 60 for processing applications, and externally transmit the detection data to an external device 70 for storage through communication. , prompting the external device 70 to generate a gas detection information and a notification warning. The above-mentioned external device 70 can be a cloud system, a portable device, a computer system, etc.; or, the device body 100 is connected to the mobile device 60 through the communication connection port 100b, so that the power of the power module 30 is transmitted to the mobile device 60 Provide power, and transmit the detection data output by the microprocessor 40 to the mobile device 60 for processing and application, provide the user of the mobile device 60 to obtain gas detection information and report warnings, and the mobile device 60 can transmit the detection data externally through communication. It is stored in an external device 70 to prompt the external device 70 to generate a gas detection information and a notification warning. The communication transmission can be through wired communication transmission, or through wireless communication transmission, such as: Wi-Fi transmission, Bluetooth transmission , RFID transmission, a near field communication transmission, etc.

Please continue to refer to FIGS. 2A to 2C , the present application provides a gas detection module 10 , which includes a base 1 , a piezoelectric actuator 2 , a driving circuit board 3 , a laser assembly 4 , and a particle sensor 5 and an outer cover 6 . The driving circuit board 3 is covered and attached to the second surface 12 of the base 1 , the laser element 4 is arranged on the driving circuit board 3 and is electrically connected to the driving circuit board 3 , and the particle sensor 5 is also arranged on the driving circuit board 3, and is electrically connected with the driving circuit board 3, and the outer cover 6 covers the base 1, and is attached to the first surface 11 of the base 1, and the outer cover 6 has a side plate 61, and the outer cover 6 has a side plate 61. The plate 61 has an air inlet frame port 61a and an air outlet frame port 61b.

Please refer to FIG. 3A and FIG. 3B , the base 1 has a first surface 11 , a second surface 12 , a laser setting area 13 , an air inlet groove 14 , an air guide component bearing area 15 and an air outlet groove Slot 16. The first surface 11 and the second surface 12 are two opposite surfaces. The laser setting area 13 is formed by hollowing out from the first surface 11 toward the second surface 12. The air inlet grooves 14 are formed concavely from the second surface 12 and are adjacent to the laser setting area 13 . The air inlet groove 14 is provided with an air inlet 14a, which communicates with the outside of the base 1 and corresponds to the air inlet frame opening 61a of the outer cover 6, and two side walls pass through a light-transmitting window 14b, which communicates with the laser setting area 13. . Therefore, the first surface 11 of the base 1 is covered by the outer cover 6, and the second surface 12 is covered by the driving circuit board 3, so that the air intake groove 14 defines an air intake path.

The air guide assembly bearing area 15 is formed by the recess of the second surface 12, communicates with the air inlet groove 14, and penetrates a ventilation hole 15a on the bottom surface. The air outlet groove 16 is provided with an air outlet 16a, and the air outlet 16a is arranged corresponding to the air outlet frame opening 61b of the outer cover 6. The air outlet groove 16 includes a recess formed by the first surface 11 corresponding to the vertical projection area of the air guide assembly bearing area 15. A first section 16b, and a second section 16c formed by hollowing out the first surface 11 to the second surface 12 in the area extending from the vertical projection area of the non-gas-conducting element carrying area 15, wherein the first section 16b It is connected with the second section 16c to form a step difference, and the first section 16b of the air outlet groove 16 is communicated with the ventilation hole 15a of the air guide assembly bearing area 15, and the second section 16c of the air outlet groove 16 is communicated with the air outlet 16a; therefore, When the first surface 11 of the base 1 is covered by the cover 6 and the second surface 12 is covered by the driving circuit board 3 , the air outlet groove 16 defines an air outlet path.

4 is a schematic diagram of the base accommodating the laser component and the particle sensor. The laser component 4 and the particle sensor 5 are both disposed on the driving circuit board 3 and located in the base 1. In order to clearly describe the laser component 4 and the particle sensor 5 and the base 1 Therefore, the driving circuit board 3 is deliberately omitted in FIG. 3 for clear explanation; please refer to FIG. 4 and FIG. 2C , the laser component 4 is accommodated in the laser setting area 13 of the base 1, and the particle sensor 5 is accommodated in the The air inlet groove 14 of the base 1 is aligned with the laser assembly 4. In addition, the laser assembly 4 corresponds to the light transmission window 14b, for the laser light emitted by the laser assembly 4 to pass through, so that the laser light is irradiated to the air inlet groove. Inside the groove 14 , the path of the light beam emitted by the laser element 4 passes through the light-transmitting window 14 b and forms an orthogonal direction with the air inlet groove 14 .

The laser component 4 emits a projection beam into the air inlet groove 14 through the light-transmitting window 14b, and irradiates the suspended particles contained in the gas in the air inlet groove 14. When the beam contacts the suspended particles, it scatters and generates a projection light spot, and the particles The sensor 5 receives the projected light spot generated by the scattering and performs calculation to obtain information about the particle size and concentration of the suspended particles contained in the gas. The particle sensor 5 is a PM2.5 sensor.

Please refer to FIG. 5A and FIG. 5B , the piezoelectric actuator 2 is accommodated in the air guide element bearing area 15 of the base 1 , and the air guide element bearing area 15 is in the shape of a square. The electric actuator 2 is disposed in the air guide assembly bearing area 15 through four positioning notches 15b. In addition, the air guide assembly bearing area 15 communicates with the air intake groove 14. The gas in the gas groove 14 enters the piezoelectric actuator 2 , and the gas enters the gas outlet groove 16 through the ventilation hole 15 a of the bearing area 15 of the gas guide assembly.

Please refer to FIG. 6A and FIG. 6B , the piezoelectric actuator 2 includes a jet hole sheet 21 , a cavity frame 22 , an actuating body 23 , an insulating frame 24 and a conductive frame 25 . The air injection hole sheet 21 is made of a flexible material, and has a suspension sheet 210 , a hollow hole 211 and a plurality of connecting pieces 212 . The suspension sheet 210 is a sheet-like structure that can be bent and vibrated, and its shape and size roughly correspond to the inner edge of the air guide assembly bearing area 15, but not limited to this, the shape of the suspension sheet 210 can also be square, circular, oval , one of triangles and polygons. The hollow hole 211 runs through the center of the suspension sheet 210 for gas circulation. In this embodiment, the number of the connecting pieces 212 is four, and the number and shape of the connecting pieces 212 mainly correspond to the positioning notch 15b of the air guide assembly bearing area 15. Each connecting piece 212 and the corresponding positioning notch 15b form a card The buckle structures are mutually engaged and fixed, so that the piezoelectric actuator 2 can be arranged in the bearing area 15 of the air guide assembly. The cavity frame 22 is stacked on the air injection hole sheet 21 , and its shape corresponds to the air injection hole sheet 21 . Resonance chamber 26 . The insulating frame 24 is stacked on the actuating body 23 , and its appearance is similar to that of the cavity frame 22 . The conductive frame 25 is stacked on the insulating frame 24, and its appearance is similar to that of the insulating frame 24. The conductive frame 25 has a conductive pin 251 and a conductive electrode 252. The conductive pin 251 extends outward from the outer edge of the conductive frame 25 and conducts electricity. The electrodes 252 extend inward from the inner edge of the conductive frame 25 . In addition, the actuating body 23 further includes a piezoelectric carrier plate 231 , an adjustment resonance plate 232 and a piezoelectric plate 233 . The piezoelectric carrier plate 231 is supported and stacked on the cavity frame 22 , and the adjustment resonance plate 232 is supported and stacked on the cavity frame 22 . On the piezoelectric carrier plate 231 , the piezoelectric plate 233 is carried and stacked on the adjustment resonance plate 232 , and the adjustment resonance plate 232 and the piezoelectric plate 233 are accommodated in the insulating frame 24 and are electrically connected by the conductive electrodes 252 of the conductive frame 25 The piezoelectric plate 233, wherein the piezoelectric carrier plate 231 and the adjustment resonance plate 232 are all made of conductive materials, the piezoelectric carrier plate 231 has a piezoelectric pin 2311, the piezoelectric pin 2311 and the conductive pin 251 Connect the drive circuit (not shown) on the drive circuit board 3 to receive the drive signal (drive frequency and drive voltage). The plate 233, the conductive electrodes 252, the conductive frame 25, and the conductive pins 251 form a loop, and the conductive frame 25 and the actuator 23 are blocked by the insulating frame 24 to avoid short circuits, so that the driving signal can be transmitted to the piezoelectric plate 233. After receiving the driving signal (driving frequency and driving voltage), the piezoelectric plate 233 is deformed due to the piezoelectric effect to further drive the piezoelectric carrier plate 231 and adjust the resonance plate 232 to generate reciprocating bending vibration.

As mentioned above, the adjustment resonance plate 232 is located between the piezoelectric plate 233 and the piezoelectric carrier plate 231 , and as a buffer between the two, the vibration frequency of the piezoelectric carrier plate 231 can be adjusted. Basically, the thickness of the adjustment resonance plate 232 is greater than the thickness of the piezoelectric carrier plate 231 , and the thickness of the adjustment resonance plate 232 can be varied, thereby adjusting the vibration frequency of the actuating body 23 .

Please refer to FIG. 6A , FIG. 6B and FIG. 7A at the same time, the plurality of connecting members 212 define a plurality of gaps 213 between the suspension sheet 210 and the inner edge of the air guide element carrying area 15 for the air to circulate. Please refer to FIG. 7A , the air injection hole sheet 21 , the cavity frame 22 , the actuating body 23 , the insulating frame 24 and the conductive frame 25 are correspondingly stacked in sequence and disposed in the air guide element bearing area 15 , the air injection hole sheet 21 and the air guide element An air flow chamber 27 is formed between the bottom surfaces (not shown) of the bearing area 15 . The airflow chamber 27 communicates with the resonance chamber 26 among the actuator body 23 , the cavity frame 22 and the suspension sheet 210 through the hollow hole 211 of the air injection hole sheet 21 . By controlling the vibration frequency of the gas in the resonance chamber 26 to be close to the same as the vibration frequency of the suspension plate 210 , the resonance chamber 26 and the suspension plate 210 can generate a Helmholtz resonance effect, which makes the gas The transmission efficiency is improved.

FIGS. 7B and 7C are schematic diagrams of the piezoelectric actuator in FIG. 7A . Please review the diagram shown in FIG. 7B first. When the piezoelectric plate 233 moves away from the bottom surface of the air guide assembly bearing area 15 , it drives the air injection hole sheet 21 . The suspension sheet 210 moves away from the bottom surface of the air guide assembly bearing area 15 , so that the volume of the air flow chamber 27 expands rapidly, the internal pressure drops to form a negative pressure, and the gas outside the piezoelectric actuator 2 is attracted to flow in through the plurality of gaps 213 , and enters the resonance chamber 26 through the hollow hole 211 , so that the air pressure in the resonance chamber 26 increases to generate a pressure gradient. As shown in FIG. 7C , when the piezoelectric plate 233 drives the suspension sheet 210 of the air injection hole sheet 21 to move toward the bottom surface of the air guide assembly bearing area 15 , the gas in the resonance chamber 26 flows out rapidly through the hollow hole 211 , squeezing the air flow. The gas in the chamber 27 is ejected rapidly and in large quantities in an ideal gas state close to Bernoulli's law. According to the principle of inertia, the air pressure inside the resonant chamber 26 after exhausting is lower than the equilibrium air pressure, which will lead the gas to enter the resonant chamber 26 again. Therefore, after repeating the actions of FIG. 7B and FIG. 7C, the piezoelectric plate 233 can vibrate reciprocally, and the vibration frequency of the gas in the resonance chamber 26 is controlled to be close to the same as the vibration frequency of the piezoelectric plate 233, so as to generate The Helmholtz resonance effect enables high-speed and large-scale gas transmission.

Please refer to FIGS. 8A to 8C . FIGS. 8A to 8C are schematic diagrams of the gas path of the gas detection module. First, review FIG. 8A . 1, and flow to the position of the particle sensor 5, and as shown in FIG. 8B, the piezoelectric actuator 2 continues to drive the gas that will absorb the gas in the intake path, so as to facilitate the rapid introduction of external air and stable circulation, and pass above the particle sensor 5, at this time the laser assembly 4 emits a projection beam through the light-transmitting window 14b into the air inlet groove 14, and the air inlet groove 14 passes through the suspended particles contained in the gas above the particle sensor 5, and the beam contacts the air inlet groove 14. When aerosols are generated, they will scatter and generate projected light spots. The particle sensor 5 receives the projected light spots generated by the scattering and performs calculations to obtain information about the particle size and concentration of the suspended particles contained in the gas. The gas above the particle sensor 5 It is also continuously driven and transmitted by the piezoelectric actuator 2 and is introduced into the vent hole 15a of the air guide assembly bearing area 15, and enters the first section 16b of the air outlet groove 16. Finally, as shown in FIG. 8C, the gas enters the air outlet groove 16. After the first section 16b, since the piezoelectric actuator 2 will continuously transport gas into the first section 16b, the gas in the first section 16b will be pushed to the second section 16c, and finally pass through the gas outlet 16a and the gas outlet frame port. 61b is discharged to the outside.

As shown in FIG. 9 , the base 1 further includes a light trap region 17 . The light trap region 17 is hollowed out from the first surface 11 to the second surface 12 and corresponds to the laser setting region 13 , and the light trap region 17 is transparent The optical window 14b enables the light beam emitted by the laser component 4 to be projected into it, and the light trap area 17 is provided with a light trap structure 17a with an oblique cone surface, and the light trap structure 17a corresponds to the path of the light beam emitted by the laser component 4; in addition, The light trap structure 17a allows the projection beam emitted by the laser element 4 to be reflected into the light trap area 17 in the oblique cone structure, so as to prevent the beam from being reflected to the position of the particle sensor 5, and the position of the projection beam received by the light trap structure 17a is the same as that of the transmittance. A light trap distance D is maintained between the light windows 14b, and the light trap distance D needs to be greater than 3mm. When the light trap distance D is less than 3mm, the projected light beam projected on the light trap structure 17a will be reflected and directly reflected due to excessive stray light. Return to the position of the particle sensor 5, resulting in distortion of detection accuracy.

Please continue to review FIG. 9 and FIG. 2C , the gas detection module 10 of the present case can not only detect the particles in the gas, but also further detect the characteristics of the introduced gas. Therefore, the gas detection module 10 of the present case further includes a first volatile The organic matter sensor 7a is positioned on the driving circuit board 3 and electrically connected to it, and is accommodated in the gas outlet groove 16 to detect the gas derived from the gas outlet path, so as to detect the volatile organic compounds contained in the gas of the gas outlet path. concentration. Or the gas detection module 10 of the present case further includes a second volatile organic compound sensor 7b, which is positioned on and electrically connected to the driving circuit board 3, and the second volatile organic compound sensor 7b is accommodated in the light trap area 17. The concentration of volatile organic compounds of the gas introduced into the light trap area 17 through the gas inlet path of the gas inlet groove 14 and through the light transmission window 14b is detected.

It can be seen from the above description that the gas detection module 10 of the present case passes through the structural design of the laser setting area 13 , the air inlet groove 14 , the air guide component bearing area 15 and the air outlet groove 16 on the base 1 , and is matched with the outer cover 6 and the air outlet groove 16 . The cover sealing design of the driving circuit board 3 causes the first surface 11 of the base 1 to cover the outer cover 6 and the second surface 12 to cover the driving circuit board 3, so that the air intake groove 14 defines an air intake Path, the air outlet groove 16 defines an air outlet path, forming a single-layer air guide channel path, so that the height of the overall structure of the gas detection module 10 in this case is reduced, so that the length L of the gas detection module 10 is between 10mm and 35mm. The width W is between 10mm and 35mm, and the thickness H is between 1mm and 6.5mm, which is favorable for assembling and combining with the miniaturized mobile device 60 as shown in FIG. In addition, another embodiment of the piezoelectric actuator 2 of the present application may be a micro-electromechanical pump 2a.

10A and FIG. 10B, the MEMS pump 2a includes a first substrate 21a, a first oxide layer 22a, a second substrate 23a and a piezoelectric element 24a.

The above-mentioned first substrate 21a is a silicon wafer (Si wafer) with a thickness between 150 and 400 micrometers (μm). The first substrate 21a has a plurality of inflow holes 211a, a first surface 212a, and a second surface 213a, in this embodiment, the number of the plurality of inflow holes 211a is 4, but not limited to this, and each inflow hole 211a penetrates from the second surface 213a to the first surface 212a, and the inflow hole 211a In order to improve the inflow effect, the inflow hole 211a is tapered from the second surface 213a to the first surface 212a.

The above-mentioned first oxide layer 22a is a silicon dioxide (SiO2) film with a thickness between 10 and 20 micrometers (μm). The first oxide layer 22a is stacked on the first surface 212a of the first substrate 21a. The first oxide layer 22a has a plurality of confluence channels 221a and a confluence chamber 222a. The numbers and positions of the confluence channels 221a and the inflow holes 211a of the first substrate 21a correspond to each other. In this embodiment, the number of the confluence channels 221a is also four, one end of the four confluence channels 221a is respectively connected to the four inflow holes 211a of the first substrate 21a, and the other ends of the four confluence channels 221a are connected to the confluence flow. In the chamber 222a, after the gas enters through the inflow holes 211a respectively, it passes through the correspondingly connected confluence channels 221a and then converges into the confluence chamber 222a.

The above-mentioned second substrate 23a is a silicon wafer (SOI wafer) with silicon on an insulating layer, including: a silicon wafer layer 231a, a second oxide layer 232a and a silicon material layer 233a; the thickness of the silicon wafer layer 231a is between Between 10 and 20 micrometers (μm), there are an actuating portion 2311a, an outer peripheral portion 2312a, a plurality of connecting portions 2313a and a plurality of fluid passages 2314a, the actuating portion 2311a is circular; the outer peripheral portion 2312a is a hollow ring, Surrounding the periphery of the actuating portion 2311a; the plurality of connecting portions 2313a are respectively located between the actuating portion 2311a and the outer peripheral portion 2312a, and connect the two to provide the function of elastic support. The plurality of fluid passages 2314a are formed around the periphery of the actuating portion 2311a, and are respectively located between the plurality of connecting portions 2313a.

The above-mentioned second oxide layer 232a is a silicon oxide layer, and its thickness is between 0.5 and 2 micrometers (μm). It is formed on the silicon wafer layer 231a in a hollow ring shape and defines a vibration cavity with the silicon wafer layer 231a. Room 2321a. The silicon material layer 233a has a circular shape, is stacked on the second oxide layer 232a and is bonded to the first oxide layer 22a. The silicon material layer 233a is a silicon dioxide (SiO2) film with a thickness between 2 and 5 micrometers (μm). , has a through hole 2331a, a vibrating part 2332a, a fixing part 2333a, a third surface 2334a and a fourth surface 2335a. The through hole 2331a is formed in the center of the silicon material layer 233a, the vibration part 2332a is located in the peripheral area of the through hole 2331a, and vertically corresponds to the vibration chamber 2321a; In the oxide layer 232a, the third surface 2334a is bonded to the second oxide layer 232a, and the fourth surface 2335a is bonded to the first oxide layer 22a; the piezoelectric element 24a is stacked on the actuating portion 2311a of the silicon wafer layer 231a.

The above-mentioned piezoelectric element 24a includes a lower electrode layer 241a, a piezoelectric layer 242a, an insulating layer 243a, and an upper electrode layer 244a. The lower electrode layer 241a is stacked on the actuating portion 2311a of the silicon wafer layer 231a, and the piezoelectric layer 242a is stacked. It is placed on the lower electrode layer 241a, and the two are electrically connected through the contact area. In addition, the width of the piezoelectric layer 242a is smaller than that of the lower electrode layer 241a, so that the piezoelectric layer 242a cannot completely cover the lower electrode layer 241a. The insulating layer 243a is stacked on the partial area of the piezoelectric layer 242a and the area of the lower electrode layer 241a that is not shielded by the piezoelectric layer 242a, and finally the insulating layer 243a and the remaining surface of the piezoelectric layer 242a not shielded by the insulating layer 243a are stacked The upper electrode layer 244a is stacked on top, so that the upper electrode layer 244a can be electrically connected to the piezoelectric layer 242a, and the insulating layer 243a is used to block the space between the upper electrode layer 244a and the lower electrode layer 241a, so as to avoid a short circuit caused by direct contact between the two. .

Please refer to FIGS. 11A to 11C . FIGS. 11A to 11C are schematic diagrams of the operation of the MEMS pump 2 a. 11A, the lower electrode layer 241a and the upper electrode layer 244a of the piezoelectric element 24a receive the driving voltage and driving signal (not shown) transmitted by the driving circuit board 3 and then conduct them to the piezoelectric layer 242a. After the layer 242a receives the driving voltage and the driving signal, it begins to deform due to the influence of the inverse piezoelectric effect, which will drive the actuating portion 2311a of the silicon wafer layer 231a to start to move. When the piezoelectric element 24a drives the actuating portion 2311a to move upward and pull apart The distance between the second oxide layer 232a and the second oxide layer 232a, at this time, the volume of the vibration chamber 2321a of the second oxide layer 232a will increase, so that a negative pressure will be formed in the vibration chamber 2321a, and the confluence chamber of the first oxide layer 22a will be The gas in the chamber 222a is drawn into it through the perforations 2331a. Please continue to refer to FIG. 11B , when the actuating portion 2311a is displaced upward by the traction of the piezoelectric element 24a, the vibration portion 2332a of the silicon material layer 233a will be displaced upward due to the influence of the resonance principle. When the vibration portion 2332a is displaced upward, it will compress and vibrate. The space of the chamber 2321a and push the gas in the vibration chamber 2321a to move to the fluid channel 2314a of the silicon wafer layer 231a, so that the gas can be discharged upward through the fluid channel 2314a, while the vibration part 2332a is displaced upward to compress the vibration chamber 2321a, The volume of the confluence chamber 222a is increased due to the displacement of the vibrating part 2332a, and a negative pressure is formed inside the confluence chamber 222a, which sucks the gas outside the MEMS pump 2a into it through the inflow hole 211a. Finally, as shown in FIG. 11C, the piezoelectric element 24a drives the silicon wafer. When the actuating portion 2311a of the layer 231a is displaced downward, the gas in the vibration chamber 2321a is pushed to the fluid channel 2314a, and the gas is discharged, and the vibrating portion 2332a of the silicon material layer 233a is also moved downward by the actuating portion 2311a. , the gas in the synchronously compressed confluence chamber 222a moves to the vibration chamber 2321a through the perforation 2331a, and when the piezoelectric component 24a drives the actuating portion 2311a to move upward, the volume of the vibration chamber 2321a will be greatly increased, and there will be a higher The suction force sucks the gas into the vibration chamber 2321a, and the above actions are repeated, so that the piezoelectric element 24a continuously drives the actuator 2311a to move up and down, so that the vibration part 2332a is linked and displaced up and down. The internal pressure makes it continuously absorb and discharge gas, thereby completing the action of the MEMS pump 2a.

Of course, for the application of the gas detection module 10 of the present application to be embedded in a mobile power supply device, the piezoelectric actuator 2 of the present application can be replaced by the structure of the micro-electromechanical pump 2a, so that the overall size of the gas detection module 10 of the present application is further reduced. The length L and the width W of the detection module 10 are reduced to between 2 mm and 4 mm, and the thickness H is between 1 mm and 3.5 mm, so that the user can immediately detect the surrounding air quality.

To sum up, in the mobile power supply device with gas detection provided in this case, the gas detection module is embedded in the device. The gas detection module can detect the air quality of the surrounding environment of the user at any time, and transmit the air quality information to the mobile device in real time. On the other hand, the mobile power supply device can not only provide electricity to the gas detection module and charge the mobile device, but also can detect the air quality anytime and anywhere.

This case can be modified by Shi Jiangsi, a person who is familiar with this technology, but all of them do not deviate from the protection of the scope of the patent application attached.

Claims (19)

1. A mobile power supply device with gas detection function, comprising:

the device body is provided with a vent, at least one connecting port and an accommodating chamber, wherein the vent is communicated with the accommodating chamber and is used for leading gas into the accommodating chamber;

at least one gas detection module, which is assembled in the containing chamber of the device body to introduce gas into the device body so as to detect the particle size and concentration of suspended particles in the gas and output detection data;

the driving control board is assembled in the accommodating cavity of the device body, and the gas detection module is positioned and arranged on the driving control board and is electrically connected with the gas detection module;

the power supply module is positioned on the driving control board, is electrically connected with the driving control board, and can store electric energy and output the electric energy outwards;

and the microprocessor is positioned on the driving control board, is electrically connected with the driving control board, can control the driving signal of the gas detection module to detect and start the operation, converts the detection data of the gas detection module into detection data to be stored and transmitted outwards, can transmit the detection data outwards to a mobile device for processing and application, and transmits the detection data outwards to an external device to be stored.

2. The device of claim 1, wherein the connection port of the device body is used as a communication connection for the mobile device, and transmits the power of the power module to the mobile device, and transmits the detection data outputted by the microprocessor to the mobile device for processing and application.

3. The mobile power device with gas detection function as claimed in claim 1, wherein the microprocessor comprises a communicator for receiving the detection data outputted from the microprocessor and transmitting the detection data to the external device for storing the detection data, so that the external device generates a gas detection message and a notification alarm.

4. The mobile power device with gas detection function of claim 1, wherein the mobile device transmits the detection data to the external device through communication to enable the external device to generate a gas detection message and a notification alarm.

5. The mobile power device with gas detection function of claim 1, further comprising a power supply device for transmitting the electric energy to the power module, so that the power module stores the electric energy and outputs the electric energy.

6. The mobile power device with gas detection of claim 1, wherein the power module comprises at least one rechargeable battery for storing the electrical energy.

7. The mobile power device with gas detection of claim 1, wherein the gas detection module comprises:

a base having:

a first surface;

a second surface opposite to the first surface;

a laser setting area formed by hollowing from the first surface to the second surface;

the air inlet groove is formed by sinking from the second surface and is adjacent to the laser setting area, the air inlet groove is provided with an air inlet which is communicated with the outside of the base, and two side walls penetrate through a light-transmitting window and are communicated with the laser setting area;

the air guide assembly bearing area is formed by sinking from the second surface, communicated with the air inlet groove and communicated with a vent hole on the bottom surface; and

an air outlet groove, which is recessed from the first surface to the bottom surface of the air guide assembly bearing area, is formed by hollowing the area of the first surface, which is not corresponding to the air guide assembly bearing area, from the first surface to the second surface, is communicated with the air vent hole, is provided with an air outlet and is communicated with the outside of the base;

the piezoelectric actuator is accommodated in the air guide assembly bearing area;

the driving circuit board is attached to the second surface of the base by the sealing cover;

the laser assembly is positioned on the driving circuit board, is electrically connected with the driving circuit board, is correspondingly accommodated in the laser arrangement area, and emits a light beam path which penetrates through the light-transmitting window and forms an orthogonal direction with the air inlet groove;

a particle sensor, which is positioned on the driving circuit board and electrically connected with the driving circuit board, and is correspondingly accommodated at the position of the air inlet groove and the orthogonal direction of the light beam path projected by the laser assembly, so as to detect the particles which pass through the air inlet groove and are irradiated by the light beam path projected by the laser assembly; and

the outer cover covers the first surface of the base and is provided with a side plate, and the side plate is provided with an air inlet frame opening and an air outlet frame opening respectively corresponding to the air inlet and the air outlet of the base;

the outer cover covers the first surface of the base, the driving circuit board covers the second surface of the base, so that the air inlet groove defines an air inlet path, the air outlet groove defines an air outlet path, the piezoelectric actuator accelerates and guides external air to enter the air inlet path defined by the air inlet groove from the air inlet frame port, the particle sensor detects the concentration of particles in the air, the air is guided through the piezoelectric actuator, is discharged into the air outlet path defined by the air outlet groove from the vent hole, and is finally discharged from the air outlet frame port.

8. The mobile power device with gas detection function as claimed in claim 7, wherein the gas guide module carrying region has a positioning notch at each of four corners for the piezoelectric actuator to be inserted and positioned.

9. The mobile power supply apparatus of claim 7, wherein the pedestal further comprises an optical trapping region hollowed out from the first surface toward the second surface and corresponding to the laser installation region, the optical trapping region having an optical trapping structure with a tapered surface installed corresponding to the beam path.

10. The mobile power supply apparatus for gas detection according to claim 9, wherein the light source received by the light trap structure is positioned at a light trap distance from the light transmissive window.

11. The mobile power supply apparatus with gas detection according to claim 10, wherein the optical trap distance is greater than 3 mm.

12. The mobile power supply apparatus with gas detection according to claim 7, wherein the particle sensor is a PM2.5 sensor.

13. The mobile power device with gas detection of claim 7, wherein the piezoelectric actuator comprises:

the air injection hole piece comprises a plurality of connecting pieces, a suspension piece and a hollow hole, the suspension piece can be bent and vibrated, the connecting pieces are adjacent to the periphery of the suspension piece, the hollow hole is formed in the central position of the suspension piece, the suspension piece is fixedly arranged through the connecting pieces, the connecting pieces provide elastic support for the suspension piece, an air flow chamber is formed between the bottoms of the air injection hole piece, and at least one gap is formed between the connecting pieces and the suspension piece;

a cavity frame bearing and superposed on the suspension plate;

an actuating body bearing and overlapping on the cavity frame to receive voltage to generate reciprocating bending vibration;

an insulating frame bearing and superposed on the actuating body; and

a conductive frame, which is arranged on the insulating frame in a bearing and stacking manner;

the actuating body, the cavity frame and the suspension sheet form a resonance chamber, the actuating body is driven to drive the air injection hole sheet to resonate, the suspension sheet of the air injection hole sheet generates reciprocating vibration displacement, the gas enters the airflow chamber through the gap and is discharged, and the transmission flow of the gas is realized.

14. The mobile power device with gas detection of claim 13, wherein the actuator comprises:

a piezoelectric carrier plate bearing and superposed on the cavity frame;

the adjusting resonance plate is loaded and stacked on the piezoelectric carrier plate; and

and the piezoelectric plate is loaded and stacked on the adjusting resonance plate to receive voltage to drive the piezoelectric carrier plate and the adjusting resonance plate to generate reciprocating bending vibration.

15. The mobile power device with gas detection of claim 7, wherein the gas detection module further comprises a first volatile organic compound sensor positioned on the driving circuit board and electrically connected to the driving circuit board and accommodated in the gas outlet trench for detecting the gas guided out of the gas outlet path.

16. The mobile power supply apparatus of claim 9, wherein the gas detection module further comprises a second voc sensor positioned on the driving circuit board and electrically connected to the light trapping region for detecting the gas passing through the gas inlet channel of the gas inlet trench and the light-transmitting window and introduced into the light trapping region.

17. The device of claim 7, wherein the gas detection module has a length of 2mm to 4mm, a width of 2mm to 4mm, and a thickness of 1mm to 3.5 mm.

18. The mobile power device with gas detection of claim 7, wherein the piezoelectric actuator is a micro-electromechanical pump comprising:

a first substrate having a plurality of inflow holes, the plurality of inflow holes being tapered;

a first oxide layer stacked on the first substrate, the first oxide layer having a plurality of converging channels and a converging chamber, the converging channels being communicated between the converging chamber and the inflow holes;

a second substrate bonded to the first substrate, comprising:

a silicon wafer layer having:

an actuating portion, which is circular;

an outer peripheral portion, which is in a hollow ring shape and surrounds the periphery of the actuating portion; a plurality of connecting portions respectively connected between the actuating portion and the outer circumferential portion; and

a plurality of fluid channels surrounding the periphery of the actuating part and respectively positioned among the connecting parts; the second oxidation layer is formed on the silicon crystal layer, is in a hollow ring shape, and defines a vibration chamber with the silicon crystal layer; and

a circular silicon layer on the second oxide layer and bonded to the first oxide layer, comprising:

a through hole formed in the center of the silicon material layer;

a vibrating part located in the peripheral area of the through hole;

a fixing part located at the peripheral region of the silicon material layer; and

and the piezoelectric component is circular and is stacked on the actuating part of the silicon wafer layer.

19. The mobile power supply apparatus with gas detection according to claim 18, wherein the piezoelectric element comprises:

a lower electrode layer;

a piezoelectric layer stacked on the lower electrode layer;

an insulating layer, which is laid on partial surface of the piezoelectric layer and partial surface of the lower electrode layer; and

and the upper electrode layer is superposed on the insulating layer and the rest surface of the piezoelectric layer, which is not provided with the insulating layer, and is electrically connected with the piezoelectric layer.

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