CN216331757U - Automatic remove automobile rearview mirror of rain and fog water - Google Patents

Abstract

The utility model discloses an automobile rearview mirror capable of automatically removing rain and fog water, which comprises a shell and a mirror surface, wherein a cavity formed by the shell and the mirror surface is communicated with the atmosphere; the thermoelectric power generation module comprises a bottom plate which is matched with and attached to the arc surface of the air inlet manifold of the automobile engine and has the properties of insulation, heat conduction and high temperature resistance, a plurality of groups of power generation units are fixed on the bottom plate, and each group of power generation units comprises an N-type semiconductor and a P-type semiconductor. The automobile rearview mirror fully utilizes the working waste heat of the engine to generate electricity, and the generating device has a simple structure.

Description

Automatic remove automobile rearview mirror of rain and fog water

Technical Field

The utility model relates to the technical field of automobile parts, in particular to an automobile rearview mirror capable of automatically removing rain and fog.

Background

The rearview mirror is an important component of an automobile, is a main tool for a driver to acquire external information such as the rear, the side and the lower part of the automobile, and plays an important role in driving safety of the driver. However, in rainy days or foggy days, the rain water or foggy water on the automobile rearview mirror can influence a driver to observe the situation behind the automobile, so that certain potential safety hazards are caused.

The automatic rain and fog removing device for the automobile rearview mirror in the prior art has various types and different structures, but still has the following defects, such as: some adopt the windward to open the passageway, utilize and blow rainwater, fog on the lens when driving, but the passageway size and pipeline route are difficult to control, add to blow water with steam, the effect of removing rain fog water is less ideal, and makes the volume of rear-view mirror great relatively. Some adopt electric heating to remove rain fog water, job stabilization nature is unsatisfactory, and long-term higher temperature influences the life of rear-view mirror itself, and especially the dust remains the mirror surface after the dewatering, influences the sight equally. In addition, rain and fog are removed by adopting vibration modes such as ultrasonic waves and the like, the working reliability is not strong, and the sight is still shielded in the rain and fog downflow process in the vibration.

The applicant provides a technical scheme for generating electricity by utilizing a piezoelectric energy harvester assembly and removing rain and fog water on a mirror surface by adopting gas provided by a piezoelectric pump, and compared with the prior art, the piezoelectric energy harvester has high working reliability and can automatically remove rain and fog water.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a technical scheme which is different from the prior application of the applicant, fully utilizes the working waste heat of an engine to generate electricity, has a relatively simple structure and good rain and fog removing effect and is an automobile rearview mirror capable of automatically removing rain and fog.

The utility model provides an automobile rearview mirror capable of automatically removing rain and fog water, which comprises a shell and a mirror surface arranged at the opening of the shell, wherein a cavity formed by the shell and the mirror surface is communicated with the atmosphere, the automobile rearview mirror also comprises a temperature and humidity sensor arranged in the cavity, a circuit box provided with a control circuit, a blowing device which is formed by an air pump, an air bag and an air pipe and used for blowing air to the mirror surface to remove the rain and fog water, and the automobile rearview mirror also comprises a temperature difference power generation module which is fixed on an air inlet manifold of an automobile engine and absorbs the working waste heat of the engine, wherein the temperature difference power generation module is electrically connected with a voltage stabilizing circuit, a super capacitor, a voltage conversion circuit and the air pump which are arranged in the cavity through leads.

After adopting the structure, the automobile rearview mirror capable of automatically removing rain and fog has the following advantages: the technical scheme that different power generation devices are adopted in the prior application of the applicant is provided, the structure of the temperature difference power generation device is relatively simple, and the working waste heat of the engine is fully utilized for power generation. In the working process of the automobile engine, the surface of an engine intake manifold can always form a temperature difference environment with the atmosphere, the temperature difference power generation module can convert heat energy generated in the working process of the automobile engine into electric energy to be stored into the super capacitor and supplied to the air pump, an external power supply is not needed, the power generation efficiency is relatively high, and the waste heat energy source of the automobile is fully and effectively utilized. And the waste heat of the automobile engine is used as a heat source, the rain and fog removing working stability and reliability of the air pump and the automobile rearview mirror are high, and the rain and fog removing effect is good.

Furthermore, the temperature difference power generation module comprises a bottom plate which is inosculated with and fixedly attached to the shape of the arc surface of the air inlet manifold of the automobile engine and has the properties of insulation, heat conduction and high temperature resistance, a plurality of groups of power generation units are fixed on the bottom plate, each group of power generation units comprises an N-type semiconductor and a P-type semiconductor, the N-type semiconductors and the P-type semiconductors which are longitudinally arranged and transversely arranged are arranged at intervals, a conductive woven mesh adopts a structure that the top end is electrically connected with two adjacent N-type semiconductors and the P-type semiconductors, the bottom end is electrically connected with two adjacent P-type semiconductors and the N-type semiconductors, all the power generation units are sequentially connected in series, the P-type semiconductors at two ends are connected with a negative output lead, and the N-type semiconductors are connected with a positive output lead. After the temperature difference power generation module adopts the above specific structure, the structure is simpler, the power generation efficiency is higher, the waste heat energy source of the automobile is further fully and effectively utilized, and the working stability and the reliability of the air pump and the automobile rearview mirror in removing rain and fog water are further improved.

Furthermore, the bottom plate is made of polyimide materials with the properties of insulation, heat conduction and high temperature resistance, and the circular arc-shaped bottom plate is bonded on the circular arc-shaped surface of the air inlet manifold by adopting a high-temperature-resistant double-sided adhesive tape. After the structure is adopted, the bottom plate and the air inlet manifold of the automobile engine are fixed and heat transfer is more stable and reliable, the heat conduction, insulation and high temperature resistance effects of the bottom plate are further improved, and the service life of the temperature difference power generation module can be prolonged.

Furthermore, the conductive mesh grid is composed of a plurality of rectangular copper sheets, the rectangular copper sheets connecting the bottom ends of the two adjacent rectangular N-type semiconductors and the rectangular P-type semiconductors are bonded on the bottom plate by adopting high-temperature-resistant insulating glue, and are soldered with the bottom ends of the adjacent rectangular N-type semiconductors and the rectangular P-type semiconductors by tin; and a rectangular copper sheet for connecting the top ends of the adjacent rectangular P-type semiconductors and the rectangular N-type semiconductors is also soldered with the top ends of the adjacent two rectangular P-type semiconductors and the rectangular N-type semiconductors by tin. After the structure is adopted, the connection between the conductive mesh grid and all the N-type semiconductors, the rectangular P-type semiconductors and the bottom plate is more stable and reliable, the effect of converting heat energy generated in the working process of an automobile engine into electric energy is better, and the efficiency of thermoelectric generation is higher.

Furthermore, the P-type semiconductor is a P-type semiconductor block made of antimony-doped bismuth telluride material, and the N-type semiconductor is an N-type semiconductor block made of selenium-doped bismuth telluride material. After heating, the hot end of the P-type semiconductor is lack of holes and is negative, and the hot end of the N-type semiconductor is lack of electrons and is positive. After the structure is adopted, the mutual synergistic effect of a plurality of groups of power generation units is more fully exerted, the effect of converting heat energy generated in the working process of an automobile engine into electric energy is better, and the efficiency of thermoelectric power generation is higher.

Furthermore, the lead is a high-temperature-resistant lead. After adopting above structure, the job stabilization nature and the reliability of thermoelectric generation module are better, and life is longer.

Furthermore, the voltage stabilizing circuit and the voltage conversion circuit are arranged in the circuit control box. After the structure is adopted, the circuit structure is more compact, the negative influence of the outside on the circuit is reduced, the working stability and the reliability of the temperature difference power generation device are better, and the service life is longer.

Furthermore, a one-way valve plate for opening exhaust when the pressure of the air bag exceeds the preset gas transmission pressure is arranged at the exhaust port of the air bag. After the structure is adopted, the air pump inflates the air bag, when the pressure of the air bag reaches the preset air delivery pressure, the air rushes the one-way valve plate or the air bag exhaust valve plate, and blows air to the mirror surface through the air pipe to remove rain and fog water. The working characteristics of high frequency and short period of the air pump are fully utilized, air is utilized to be an air source, and other external equipment is not needed, so that the collection of air is simple and feasible, the flow rate of the air blown out from the air blowing port is high, the rain and mist removing effect is good, the working reliability is high, the rainwater and mist removing mode is efficient and feasible due to the self-air supply mode, the rearview effect of driving in rainy and foggy days can be greatly improved, and the driving safety is improved.

Drawings

FIG. 1 is a front sectional view schematically showing the structure of the automatic rain and fog removing automobile rearview mirror of the present invention.

FIG. 2 is a schematic sectional view of the automobile rearview mirror for automatically removing rain and fog according to the present invention.

Fig. 3 is a schematic side view of the thermoelectric power generation module according to the present invention.

Fig. 4 is a schematic perspective view of the thermoelectric power generation module according to the present invention.

FIG. 5 is a schematic view of a thermoelectric generation module attached to an intake manifold of an automobile engine according to the present invention.

FIG. 6 is a schematic diagram of the energy conversion and transmission path of the present invention.

Shown in the figure: 1. the device comprises a shell, 2, a lead, 3, a support piece, 4, a chamber, 5, an air outlet pipe, 6, an air blowing pipe, 7, an air blowing port, 8, a mirror surface, 9, an air bag, 10, an air inlet pipe, 11, an air pump air outlet, 12, an air pump air inlet, 13, an air pump, 14, a temperature and humidity sensor, 15, a connecting piece, 16, a circuit box, 17, a super capacitor, 18, a base, 19, a bottom plate, 20, a rectangular copper sheet, 21, a power generation unit, 22, a conductive woven mesh, 23, a P-type semiconductor, 24, an N-type semiconductor, 25, a temperature difference power generation module, 26 and an air inlet manifold.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It is to be noted that the description of the embodiments is provided to aid understanding of the present invention, and is not intended to limit the present invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2.

The utility model relates to an automatic remove automobile rearview mirror of rain and fog water, include casing 1 and install the mirror surface 8 at 1 opening part of casing, the cavity 4 that casing 1 and mirror surface 8 constitute communicates with each other with the atmosphere. It is understood that the name of the automobile rearview mirror only includes the function of automatically removing rain and fog water, but the name of the automobile rearview mirror also includes the function of automatically removing snow, frost and ice on the mirror surface 8 in practical use, but for the sake of simplicity, the name of the automobile rearview mirror only represents the automobile rearview mirror capable of automatically removing rain and fog water.

The utility model relates to an automatic remove automobile rearview mirror of sleet fog, still including establishing temperature and humidity sensor 14 in cavity 4, being equipped with control circuit's circuit box 16 and constitute by air pump 13, gasbag 9 and trachea and be used for blowing to mirror surface 8 with the gas blowing device of sleet fog.

The temperature and humidity sensor 14, the air pump 13 and the circuit box 16 are all installed on the base 18, wherein the circuit box 16 is connected with the support member 3 through the connecting member 15, and the air bag 9 is installed on the platform of the support member 3. An air pump air inlet 12 is communicated with the chamber 4, an air pump air outlet 11 is connected with an air bag 9 through an air inlet pipe 10, an air outlet of the air bag 9 is communicated with an air outlet pipe 5, the air outlet pipe 5 is communicated with a transverse air blowing pipe 6, and a plurality of air blowing openings 7 facing the mirror surface 8 are formed in the air blowing pipe 6. The air outlet of the air bag 9 is provided with a one-way valve plate (not shown) which can open the air outlet when the pressure of the air bag 9 exceeds the preset pressure, such as a one-way valve plate which is provided with a pre-tightening spring and only can not be opened. The air pump 13 and the temperature and humidity sensor 14 are respectively electrically connected with a control circuit in the circuit box 16. Such as a connection plate and a connection screw, 15. The support 3 is a support frame. The air inlet conduit 10 may also be referred to as a gas delivery conduit.

As shown in fig. 1, 2, 3, 4, 5 and 6.

The utility model relates to an automatic remove automobile rearview mirror of sleet fog, still including fixing on automobile engine's air intake manifold 26 and absorbing the thermoelectric generation module 25 of engine work waste heat, thermoelectric generation module 25 is connected through wire 2 and voltage stabilizing circuit, super capacitor 17, voltage conversion circuit and the air pump 13 electricity of establishing in cavity 4. The voltage stabilizing circuit and the voltage conversion circuit are both arranged in the circuit box 16.

The control circuit comprises a main controller, a voltage stabilizing circuit, a voltage conversion circuit or an amplifying circuit for converting low voltage into high voltage, and a switch circuit for controlling the on-off of the power supply of the piezoelectric pump (the main controller and the circuits are not shown in the figure). The temperature and humidity sensor 14 and the switch circuit are electrically connected with the main controller. The main controller can adopt a microprocessor or MCU, and also can adopt a central processing unit or CPU. The microprocessor, the temperature and humidity sensor 14, the voltage stabilizing circuit and the voltage conversion circuit are all commercially available products. The control circuitry may be integrated into the circuitry box 16 using an integrated circuit board, and the circuitry box 16 may also be referred to as a circuitry control box. The supercapacitor 17 is understood to be a new battery, the supercapacitor 17, also a commercial product. The low voltage is converted into high voltage, such as a few tenths of volts, and the high voltage is converted into dozens of volts. The voltage stabilizing circuit, the low voltage conversion circuit, the switch circuit and the like are all the prior art, and the connection relationship among the circuits is also the prior art.

The thermoelectric power generation module 25 includes a bottom plate 19 fitted and fixed to the circular arc surface of the intake manifold 26 of the automobile engine, and having insulating, heat conducting, and high temperature resistant properties. A plurality of groups of power generation units 21 such as dozens of groups are fixed on the bottom plate 19, each group of power generation units 21 comprises an N-type semiconductor 24 and a P-type semiconductor 23, the N-type semiconductors 24 and the P-type semiconductors 23 which are longitudinally arranged and transversely arranged are arranged at intervals, and a conductive mesh grid 22 is sequentially connected in series with all the power generation units 21 by adopting a structure that the top ends of the two adjacent N-type semiconductors 24 and the two adjacent P-type semiconductors 23 are electrically connected, and the bottom ends of the two adjacent P-type semiconductors 23 and the two adjacent N-type semiconductors 24 are electrically connected. It is understood that the rectangular copper sheet 20 is used to connect the top ends of two adjacent N-type semiconductors 24 and P-type semiconductors 23, the bottom ends of two adjacent P-type semiconductors 23 and N-type semiconductors 24, and the top ends of two adjacent N-type semiconductors 24 and P-type semiconductors 23 to … …, until all the N-type semiconductors 24 and P-type semiconductors 23 on the bottom board 19 are connected in series. The P-type semiconductor 23 at both ends is connected to the negative output lead, and the N-type semiconductor 24 is connected to the positive output lead.

The bottom plate 19 is preferably a bottom plate 19 made of polyimide material with insulating, heat conducting and high temperature resistant properties, and the circular arc-shaped bottom plate 19 is adhered to the circular arc-shaped surface of the intake manifold 26 by using a high temperature resistant double-sided adhesive tape. The polyimide material and the high-temperature-resistant double-sided adhesive tape are both commercially available products.

The conductive mesh grid 22 is composed of a plurality of rectangular copper sheets 20, such as dozens of rectangular copper sheets 20, the rectangular copper sheets 20 connecting the bottom ends of two adjacent rectangular N-type semiconductors 24 and rectangular P-type semiconductors 23 are adhered to the bottom plate 19 by adopting high-temperature-resistant insulating glue, and are soldered with the bottom ends of the adjacent rectangular N-type semiconductors 24 and rectangular P-type semiconductors 23 by adopting tin. The rectangular copper sheet 20 connecting the top ends of the adjacent rectangular P-type semiconductors 23 and the rectangular N-type semiconductors 24 is also soldered to the top ends of the adjacent two rectangular P-type semiconductors 23 and the rectangular N-type semiconductors 24. High temperature resistant insulating glues are also commercially available.

The P-type semiconductor 23 is preferably a P-type semiconductor block made of bismuth telluride doped with antimony, and the N-type semiconductor 24 is preferably an N-type semiconductor block made of bismuth telluride doped with selenium. The bismuth telluride material doped with selenium and the bismuth telluride material doped with antimony are also commercially available.

The wire 2 is preferably a high temperature resistant wire. High temperature resistant wire is also a commercially available product.

The operating principle of the thermoelectric power generation device in the present invention is briefly described as follows, if one end of any two metals or semiconductors is combined together, and the other end is kept in an open circuit state, when there is a temperature difference between the two ends, the open circuit end generates an electromotive force, and this effect is called seebeck effect. When the bottom of the semiconductor is heated, a temperature difference is formed between the bottom end and the top end of the semiconductor, a Seebeck effect occurs inside the semiconductor, and holes and electrons begin to diffuse to the low-temperature end. For a P-type semiconductor 23, holes migrate to the cold end and the hot end is negatively charged due to the lack of a positive charge. For an N-type semiconductor 24, electrons migrate to the cold side, and the hot side is positively charged due to the lack of negative charge. At this time, the hot ends of the P-type semiconductor 23 and the N-type semiconductor 24 form a potential difference, so that the thermoelectric material completes the process of directly converting the heat energy input by the high-temperature end into the electric energy through the temperature difference between the high-temperature end and the low-temperature end.

In order to prolong the service life of the super capacitor 17, the electricity generated by the thermoelectric generation device enters the circuit box 16 through the lead 2, and the voltage stabilizing circuit stabilizes the voltage of the electric energy and then stores the electric energy into the super capacitor 17. Since the chamber 4 of the rearview mirror is communicated with the atmosphere, when the temperature and humidity sensor 14 detects that the temperature and humidity in the chamber 4 of the rearview mirror housing 1 reach a preset temperature and humidity, the control circuit is connected with the voltage conversion circuit, and the electric energy output by the super capacitor 17 is converted into a certain voltage value through the voltage conversion circuit to supply power to the air pump 13. The air pump 13 works, the air pump 13 inflates the air bag 9, the air is stored in the air bag 9, when the pressure of the air bag 9 reaches the preset air delivery pressure, the air rushes off an exhaust valve plate, namely a one-way valve plate, of the air bag 9, and the air is blown to the mirror surface 8 through the air outlet pipe 5, the air blowing pipe 6 and the air blowing opening 7 to remove rainwater and fog.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides an automatic remove automobile rearview mirror of rain and fog water, includes the casing and installs the mirror surface at the casing opening part, and the cavity that casing and mirror surface constitute communicates with each other with the atmosphere, still including establishing temperature and humidity sensor in the cavity, be equipped with control circuit's circuit box and constitute by air pump, gasbag and trachea and be used for blowing to the mirror surface with the gas blowing device who removes rain and fog water, its characterized in that: the automobile engine temperature difference power generation device is characterized by further comprising a temperature difference power generation module which is fixed on an air inlet manifold of the automobile engine and absorbs the working waste heat of the engine, and the temperature difference power generation module is electrically connected with a voltage stabilizing circuit, a super capacitor, a voltage conversion circuit and an air pump which are arranged in the cavity through leads.

2. The automatic rain and fog removing automobile rearview mirror as claimed in claim 1, wherein: the thermoelectric power generation module comprises a bottom plate which is matched with and attached to the arc surface of an air inlet manifold of an automobile engine and has the properties of insulation, heat conduction and high temperature resistance, a plurality of groups of power generation units are fixed on the bottom plate, each group of power generation unit comprises an N-type semiconductor and a P-type semiconductor, the N-type semiconductors and the P-type semiconductors which are longitudinally arranged and transversely arranged are arranged at equal intervals, a conductive woven mesh adopts a structure that the top end is electrically connected with two adjacent N-type semiconductors and the P-type semiconductors, the bottom end is electrically connected with two adjacent P-type semiconductors and the N-type semiconductors, all the power generation units are sequentially connected in series, the N-type semiconductors at two ends are connected with an anode output lead, and the P-type semiconductors are connected with a cathode output lead.

3. The automatic rain and fog removing automobile rearview mirror as claimed in claim 2, wherein: the bottom plate is made of polyimide materials with the properties of insulation, heat conduction and high temperature resistance, and the arc-shaped bottom plate is bonded on the arc-shaped surface of the air inlet manifold by adopting high-temperature-resistant double-faced adhesive tapes.

4. The automatic rain and fog removing automobile rearview mirror as claimed in claim 3, wherein: the conductive woven mesh is composed of a plurality of rectangular copper sheets, the rectangular copper sheets connecting the bottom ends of two adjacent rectangular N-type semiconductors and rectangular P-type semiconductors are bonded on the bottom plate by adopting high-temperature-resistant insulating glue, and are soldered with the bottom ends of the adjacent rectangular N-type semiconductors and the adjacent rectangular P-type semiconductors by tin; and a rectangular copper sheet for connecting the top ends of the adjacent rectangular P-type semiconductors and the rectangular N-type semiconductors is also soldered with the top ends of the adjacent two rectangular P-type semiconductors and the rectangular N-type semiconductors by tin.

5. An automatic rain and fog removing automobile rearview mirror as claimed in any one of claims 2-4, wherein: the P-type semiconductor is a P-type semiconductor block made of antimony-doped bismuth telluride material, and the N-type semiconductor is an N-type semiconductor block made of selenium-doped bismuth telluride material.

6. The automatic rain and fog removing automobile rearview mirror as claimed in claim 1, wherein: the lead is a high-temperature-resistant lead.

7. The automatic rain and fog removing automobile rearview mirror as claimed in claim 1, wherein: the voltage stabilizing circuit and the voltage conversion circuit are arranged in the circuit box.

8. The automatic rain and fog removing automobile rearview mirror as claimed in claim 1, wherein: the air outlet of the air bag is provided with a one-way valve plate which can start air exhaust when the air bag pressure exceeds the preset pressure.

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