CN114123841B

CN114123841B - Friction nano generator, preparation method thereof and flow guiding device

Info

Publication number: CN114123841B
Application number: CN202111213408.3A
Authority: CN
Inventors: 徐琢; 洪良; 王晓莲; 丁春澍; 马文松
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2023-10-17
Anticipated expiration: 2041-10-19
Also published as: CN114123841A

Abstract

The embodiment of the application relates to the technical field of automobile parts, in particular to a friction nano-generator, a preparation method thereof and a flow guiding device with the friction nano-generator, wherein the friction nano-generator at least comprises a flexible conductive layer, a first friction layer and a second friction layer, the first friction layer and the second friction layer both comprise a composite nano-material and polydimethylsiloxane, and the composite nano-material comprises molybdenum sulfide, zinc sulfide and graphene; the composite nano material is combined with the polydimethylsiloxane, so that the charge capturing capacity is increased, the charge storage and transfer capacity is adjusted, the rapid loss of electrons in the electrostatic effect is weakened, the problem of small output current of the friction nano generator is solved, and the friction nano generator is suitable for the driving environment of the guide cover. The friction nano generator is arranged on the surface of the air guide sleeve, so that the air resistance coefficient can be further reduced, the service life of the air guide sleeve is prolonged, and energy consumption such as wind friction, rainwater impact and the like can be recovered in an electric energy mode.

Description

Friction nano generator, preparation method thereof and flow guiding device

Technical Field

The embodiment of the application relates to the technical field of automobile parts, in particular to a friction nano generator, a preparation method thereof and a flow guiding device with the friction nano generator.

Background

Because the size difference exists between the truck head and the cargo box of the truck or the tractor, the air resistance of the whole truck in the running process is reduced by installing the guide cover, and the energy consumption is saved. In the process, the surface of the air guide sleeve can bear friction of wind power, impact of rainwater and the like, so that the service life of the air guide sleeve is influenced, and meanwhile, energy consumption of wind power, rainwater and the like is caused.

Disclosure of Invention

Accordingly, it is necessary to provide a friction nano-generator, a manufacturing method thereof and a diversion device with the friction nano-generator to improve the service life of the diversion cover and recycle the energy of wind power, rainwater and other energy sources.

According to a first aspect of the present application, an embodiment of the present application provides a friction nano generator, which is disposed on a surface of a nacelle, including:

a flexible conductive layer including a first surface and a second surface disposed opposite each other;

a first friction layer located on a first surface of the flexible conductive layer; and

a second friction layer located on a second surface of the flexible conductive layer;

the first friction layer and the second friction layer comprise a composite nano material and polydimethylsiloxane, and the composite nano material comprises molybdenum sulfide, zinc sulfide and graphene.

In one embodiment, the mass ratio of graphene in the composite nanomaterial is 10% -20%.

In one embodiment, the mass ratio of the molybdenum sulfide, the zinc sulfide, and the graphene is 160:97:40.

in one embodiment, the flexible conductive layer is a polypyrrole layer.

In one embodiment, the first friction layer and/or the second friction layer has a porous structure.

In one embodiment, the porous structure is formed on a side surface of the first friction layer and/or the second friction layer away from the flexible conductive layer; and/or the number of the groups of groups,

the porous structure is formed within the first friction layer and/or the second friction layer.

In one embodiment, the pore size of each pore in the porous structure is from 0.1 microns to 1 micron.

In one embodiment, the porous structure is formed by the addition of sodium bicarbonate to the first friction layer and/or the second friction layer.

In one embodiment, the thickness of the first friction layer and/or the second friction layer is 0.5mm to 1.5 mm.

According to a second aspect of the present application, an embodiment of the present application further provides a method for preparing a friction nano-motor, for preparing the friction nano-generator, where the method includes:

uniformly dispersing graphene into deionized water, adding sodium molybdate, zinc nitrate and thiourea, uniformly mixing, and putting the mixture into a hydrothermal reaction kettle at a first preset temperature for a first preset time period, and centrifugally cleaning to obtain composite nano powder;

mixing the composite nano powder with polydimethylsiloxane, and adding a curing agent to obtain a gelatinous mixture;

placing a part of the gelatinous mixture in a mould, and standing at a second preset temperature for a second preset time period to obtain a first friction layer;

and coating a flexible conductive layer on the surface of the first friction layer, and coating the other part of the gelatinous mixture on the surface of one side of the flexible conductive layer, which is away from the first friction layer, so as to obtain a second friction layer.

In one embodiment, the method of preparing further comprises:

spreading sodium bicarbonate on the surface of one side of the second friction layer, which is away from the flexible conductive layer, so that a porous structure is formed in the second friction layer;

solidifying the composite layer structure formed by the first friction layer, the flexible conducting layer and the second friction layer at a third preset temperature for a third preset time period to obtain a friction nano generator sample;

and cleaning and drying the cooled friction nano generator sample to obtain the friction nano generator.

In one embodiment, the sodium bicarbonate has a mass of 10mg to 90mg.

In one embodiment, the third preset temperature is 80 ℃, and the third preset time period is 30 minutes.

In one embodiment, the mass of the graphene is 20mg-60mg, the volume of the deionized water is 60ml, the amount of sodium molybdate is 0.5mmol-2mmol, the amount of zinc nitrate is 0.5mmol-2mmol, and the amount of thiourea is 2-6mmol.

In one embodiment, the first preset temperature is 200 ℃, and the first preset time period is 24 hours.

In one embodiment, the mass of the composite nano powder is 50mg-100mg, the mass of the polydimethylsiloxane is 600mg, and the mass of the curing agent is 10mg.

In one embodiment, the second preset temperature is room temperature and the second preset time period is 5 minutes.

According to a third aspect of the present application, an embodiment of the present application further provides a flow guiding device, including a flow guiding cover and a friction nano generator according to any one of the above, where the friction nano generator is covered on a surface of the flow guiding cover;

wherein the flexible conductive layer is connected to a rectifier to conduct charge trapped by the first and second friction layers to the rectifier.

In the friction nano-generator, the preparation method thereof and the flow guiding device with the friction nano-generator, the friction nano-generator at least comprises a flexible conductive layer, a first friction layer and a second friction layer, wherein the flexible conductive layer comprises a first surface and a second surface which are oppositely arranged, the first friction layer is positioned on the first surface of the flexible conductive layer, the second friction layer is positioned on the second surface of the flexible conductive layer, the first friction layer and the second friction layer both comprise composite nano-materials and polydimethylsiloxane, and the composite nano-materials comprise molybdenum sulfide, zinc sulfide and graphene; the composite nano material is combined with the polydimethylsiloxane, so that the charge capturing capacity is increased, the charge storage and transfer capacity is adjusted, the rapid loss of electrons in the electrostatic effect is weakened, the problem of small output current of the friction nano generator is solved, and the friction nano generator is suitable for the driving environment of the guide cover. Therefore, the friction nano generator is arranged on the surface of the air guide sleeve, so that the air resistance coefficient can be further reduced, the service life of the air guide sleeve is prolonged, and meanwhile, energy consumption such as wind friction, rainwater impact and the like can be recovered in an electric energy mode.

Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the application.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the embodiments of the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a friction nano-generator according to an embodiment of the present application;

FIG. 2 is a schematic flow chart of a method of manufacturing a friction nano-generator according to an embodiment of the present application;

FIG. 3 is a schematic flow chart of a method of manufacturing a friction nano-generator according to another embodiment of the present application;

FIG. 4 is a schematic view of the output current of a second friction layer with different thickness according to an embodiment of the present application;

FIG. 5 is a schematic diagram showing the output voltages of the second friction layers with different thicknesses according to an embodiment of the present application;

FIG. 6 is a graph showing the output current of a second friction layer obtained after adding different sodium bicarbonate according to one embodiment of the present application;

FIG. 7 is a graph showing the output voltage of a second friction layer obtained after adding different sodium bicarbonate according to one embodiment of the present application;

FIG. 8 is a schematic structural view of a flow guiding device according to an embodiment of the present application;

FIG. 9 is a schematic diagram of the operation of a friction nano-generator in one implementation of an embodiment of the application;

fig. 10 is a schematic circuit diagram of a friction nano-generator in one implementation of an embodiment of the application.

The reference numerals are as follows:

10. friction nano generator;

100. a flexible conductive layer 101, a first surface 102, a second surface;

200. a first friction layer;

300. a second friction layer;

400. a porous structure;

20. the air guide sleeve, 21, the top cover, 22 and the side wall;

30. a rectifier;

40. a bracket;

50. a wire;

60. and electric equipment.

Detailed Description

In order to make the above objects, features and advantages of the embodiments of the present application more comprehensible, a detailed description of the embodiments of the present application is given below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the application. The embodiments of the application may be practiced in many other ways that are different than those described herein, and similar modifications can be made by those skilled in the art without departing from the spirit of the embodiments of the application, so that the embodiments of the application are not limited to the specific embodiments disclosed below.

In describing embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the embodiments of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the embodiments of the present application, the meaning of "plurality" is at least two, for example, two, three, etc., unless explicitly defined otherwise.

In the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

In embodiments of the application, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Fig. 1 shows a schematic diagram of a friction nano-generator 10 in one implementation of an embodiment of the application.

As shown in fig. 1, an embodiment of the present application provides a friction nano-generator 10 disposed on a surface of a nacelle 20, where the friction nano-generator includes a flexible conductive layer 100, a first friction layer 200, and a second friction layer 300. The flexible conductive layer 100 includes a first surface 101 and a second surface 102 disposed opposite to each other, the first friction layer 200 is disposed on the first surface 101 of the flexible conductive layer 100, and the second friction layer 300 is disposed on the second surface 102 of the flexible conductive layer 100. The first friction layer 200 and the second friction layer 300 each include a composite nanomaterial including molybdenum sulfide, zinc sulfide, and graphene, and polydimethylsiloxane.

According to the research of the inventor, if only the polydimethylsiloxane is used as the friction layer material, the performance of the friction layer material is limited, and the electron capturing capability of the polydimethylsiloxane can be improved by combining the friction layer material with molybdenum sulfide, zinc sulfide and graphene composite powder (with a nano structure), that is, the capturing capability of charges can be improved, the storage and transfer capability of the charges can be adjusted, the rapid loss of electrons in the electrostatic effect can be weakened, and the problem of small output current of the friction nano generator 10 can be solved, so that the friction nano generator is suitable for the running environment of the air guide sleeve 20. Therefore, the friction nano generator 10 is arranged on the surface of the air guide sleeve 20, so that the air resistance coefficient can be further reduced, the service life of the air guide sleeve 20 is prolonged, and meanwhile, energy consumption such as wind friction, rainwater impact and the like can be recovered in an electric energy mode.

Further research by the inventor discovers that the mass ratio of the graphene has a great influence on the performance of the composite nano material. In order to achieve excellent charge trapping capability, in some embodiments, the mass fraction of graphene in the composite nanomaterial is 10% -20%. In particular to some embodiments, the mass ratio of molybdenum sulfide, zinc sulfide to graphene is 160:97:40. in this way, the performance for trapping, storing and transferring charges can be further optimized.

Also, since the friction nano-generator 10 of the related art often uses a metal sheet as a conductive layer, such as a copper foil, the copper foil should be bent several times to cause damage. In addition, rust can also occur when working outdoors for a long time, and the performance of the device can be greatly affected. Thus, in some embodiments, the flexible conductive layer 100 is a polypyrrole layer. Therefore, because polypyrrole is a conductive high polymer material, on one hand, the flexibility of the material can be improved, and on the other hand, compared with a metal conductive layer material, the polypyrrole is more corrosion-resistant, has good stability and is favorable for being applied to outdoor environments.

To further increase the ability to store charge, in some embodiments, the first friction layer 200 and/or the second friction layer 300 have a porous structure 400, that is, at least one of the first friction layer 200 and the second friction layer 300 has a porous structure 400. By providing the porous structure 400, on the one hand, the working contact area of the friction layer can be increased; on the other hand, the generation of more active sites is facilitated, thereby improving the charge density. The rougher the surface, the smaller the effective contact area between the mating surfaces, the greater the pressure, the greater the frictional resistance, the faster the wear, and the rougher the surface will have larger valleys, which are sensitive to stress concentrations and can affect the fatigue strength of the material. At the same time, corrosive gases or liquids may penetrate into the flexible conductive layer 100 through the pores of the surface, causing corrosion of the surface. Thus, in particular to some embodiments, the pore size of each pore in the porous structure 400 is 0.1 microns to 1 micron to further increase the charge density while satisfying the abrasion resistance, fatigue strength, and corrosion resistance.

It should be noted that "valleys" where a roughened surface would exist in larger valleys refers to the raised portions in porous structure 400 that connect the pores.

In some embodiments, the porous structure 400 is formed by the addition of sodium bicarbonate to the first friction layer 200 and/or the second friction layer 300. That is, in the heating process, sodium bicarbonate is decomposed, and generated gas forms pores in the corresponding friction layer to form more inner surfaces, so that more charges are generated, and the output power of the nano generator is improved. In addition, the sodium bicarbonate powder remaining on the surface can be removed by the cleaning, thereby forming a rough structure of the porous structure 400 on the surface, and increasing the contact area of the friction layer.

In some embodiments, the thickness of the first friction layer 200 and/or the second friction layer 300 is 0.5 millimeters to 1.5 millimeters. Within this range, an excellent output current and output voltage of the corresponding friction layer can be obtained. In particular to some embodiments, a thickness of the first friction layer 200 and/or the second friction layer 300 set to 1 millimeter may be used.

To obtain the friction nanomotors in embodiments of the present application, in some embodiments, the inventors employed a hydrothermal process to prepare the friction nanomotors.

Fig. 2 shows a schematic flow chart of a method for manufacturing a friction nano-generator according to an embodiment of the present application.

As shown in fig. 2, an embodiment of the present application provides a method for preparing a friction nano motor, for preparing the above friction nano generator, where the method includes:

s101, uniformly dispersing graphene into deionized water, adding sodium molybdate, zinc nitrate and thiourea, uniformly mixing, and putting the mixture into a hydrothermal reaction kettle at a first preset temperature for a first preset time period, and centrifugally cleaning to obtain composite nano powder;

specifically, graphene, sodium molybdate, zinc nitrate and thiourea are all in a powder state, and after centrifugal cleaning, drying operation can be performed to obtain composite nano powder. In some embodiments, the mass of graphene is 20mg-60mg, the volume of deionized water is 60ml, the amount of sodium molybdate is 0.5mmol-2mmol, the amount of zinc nitrate is 0.5mmol-2mmol, and the amount of thiourea is 2-6mmol. As one embodiment, the mass of graphene may be selected to be 40mg, the volume of deionized water may be 60ml, the amount of sodium molybdate may be 1mmol, the amount of zinc nitrate may be 1mmol, and the amount of thiourea may be 4mmol. In yet other embodiments, the first predetermined temperature is 200 ℃ and the first predetermined period of time is 24 hours.

S102, mixing the composite nano powder with polydimethylsiloxane, and adding a curing agent to obtain a gelatinous mixture;

specifically, both the polydimethylsiloxane and the curing agent are colloidal. In some embodiments, the mass of the composite nanopowder is 50mg-100mg, the mass of the polydimethylsiloxane is 600mg, and the mass of the curing agent is 10mg. As one embodiment, 90mg of composite nanopowder may be selected.

S103, placing a part of the gelatinous mixture into a mold, and standing at a second preset temperature for a second preset time period to obtain a first friction layer;

specifically, in some embodiments, the second preset temperature is room temperature and the second preset time period is 5 minutes.

And S104, coating a flexible conductive layer on the surface of the first friction layer, and coating the other part of the gelatinous mixture on the surface of one side of the flexible conductive layer, which is away from the first friction layer, so as to obtain a second friction layer.

Specifically, in some embodiments, a polypyrrole conductive film may be employed as the flexible conductive layer. Because the second friction layers with different thicknesses have different corresponding performances, a spin coater can be used for coating, and the second friction layers with different thicknesses can be obtained by controlling the rotation speed of the spin coater. In some embodiments, the spin speed of the spin coater may be set to 100rmp-500rmp, corresponding to a second friction layer having a thickness of 0.5mm to 1.5 mm.

Fig. 3 shows a schematic flow chart of a method for manufacturing a friction nano-generator according to another embodiment of the present application.

As shown in fig. 3, an embodiment of the present application provides a method for preparing a friction nano motor, for preparing the above friction nano generator, where the method includes:

s201, uniformly dispersing graphene into deionized water, adding sodium molybdate, zinc nitrate and thiourea, uniformly mixing, and putting the mixture into a hydrothermal reaction kettle at a first preset temperature for a first preset time period, and centrifugally cleaning to obtain composite nano powder;

reference may be made specifically to the foregoing embodiments, and details are not repeated here.

S202, mixing the composite nano powder with polydimethylsiloxane, and adding a curing agent to obtain a gelatinous mixture;

S203, placing a part of the gelatinous mixture into a mold, and standing at a second preset temperature for a second preset time period to obtain a first friction layer;

S204, coating a flexible conductive layer on the surface of the first friction layer, and coating the other part of the gelatinous mixture on the surface of one side of the flexible conductive layer, which is away from the first friction layer, so as to obtain a second friction layer.

S205, spreading sodium bicarbonate on the surface of one side of the second friction layer, which is away from the flexible conductive layer, so that a porous structure is formed in the second friction layer;

specifically, pores are formed in the second friction layer by adding sodium bicarbonate. In the heating process, sodium bicarbonate can be decomposed, generated gas can form air holes in the second friction layer to form more inner surfaces, so that more charges are generated, and the output power of the friction nano generator is improved. In some embodiments, the sodium bicarbonate has a mass of 10mg to 90mg to obtain a porous structure with pore sizes ranging from 0.1 microns to 1 micron.

S206, solidifying the composite layer structure formed by the first friction layer, the flexible conducting layer and the second friction layer at a third preset temperature for a third preset time period to obtain a friction nano generator sample;

specifically, the third preset temperature is 80 ℃, and the third preset time period is 30 minutes.

S207, cleaning and drying the cooled friction nano generator sample to obtain the friction nano generator.

Specifically, by washing, the remaining sodium bicarbonate powder can be removed and a coarse structure is formed on the surface, increasing the contact area of the second friction layer, so as to improve the wear resistance, fatigue strength and corrosion resistance of the second friction layer.

It should be noted that, in some of the above embodiments, the case where the porous structure is provided in the second friction layer is illustrated, and of course, the porous structure may be provided in the first friction layer by the above method.

FIG. 4 is a schematic diagram showing the output current of a second friction layer of different thickness in one implementation of an embodiment of the application; FIG. 5 is a schematic graph showing the output voltage of a second friction layer of different thickness in one embodiment of the application; FIG. 6 is a schematic diagram showing the output current of a second friction layer obtained after adding different sodium bicarbonate in an embodiment of the application; fig. 7 shows a schematic diagram of the output voltage of the second friction layer obtained after adding different sodium bicarbonate in an embodiment of the application.

In this experimental case, it was obtained by the following steps:

s301, uniformly dispersing 40mg of graphene powder in 60ml of deionized water, adding 1mmol of sodium molybdate powder, 1mmol of zinc nitrate powder and 4mmol of thiourea powder, uniformly stirring, putting into a hydrothermal reaction kettle, preserving heat at 200 ℃ for 24 hours, centrifugally cleaning and drying to obtain composite nano powder;

s302, mixing 90mg of composite nano powder with 600mg of polydimethylsiloxane (colloid), and then adding 10mg of curing agent (colloid) to obtain a colloid mixture;

s303, pouring half of the gelatinous mixture into a mold, and standing at room temperature for 5 minutes to obtain a first friction layer;

s304, coating a polypyrrole conductive film (5 cm x 5 cm) on the surface of the first friction layer ² ) Coating the rest half of the gelatinous mixture on the surface of one side of the polypyrrole conductive film, which is away from the first friction layer, through a spin coater to obtain a second friction layer;

s305, spreading sodium bicarbonate on the surface of one side of the second friction layer, which is away from the flexible conductive layer, so that a porous structure is formed in the second friction layer, and then placing the second friction layer in an oven for 30 minutes at 80 ℃ for curing to obtain a friction nano generator sample;

s306, taking out the friction nano generator sample, cooling, washing with deionized water, and drying.

In the experimental process, the rotating speeds of the spin coater in the preparation process are respectively set to be 100rmp, 200rmp, 300rmp, 400rmp and 500rmp, and second friction layers with the thicknesses of 0.5mm, 0.75mm, 1.0mm, 1.25mm and 1.5mm are respectively obtained. As can be seen from fig. 4 and 5, the second friction layer has good output performance after voltage and current tests. The second friction layer has the best output performance, current and voltage are the largest, especially when the thickness is controlled at 1.0 mm.

In the experimental process, taking the second friction layer with the thickness of 1.0mm as an example, 10mg, 30mg, 50mg, 70mg and 90mg of sodium bicarbonate are respectively added, the pore forming amount is controlled, and the performance is regulated. As can be seen from fig. 6 and 7, the second friction layer has good output performance through voltage and current tests. Especially when the added amount of sodium bicarbonate is 30mg, the second friction layer has the best output performance, and the current and voltage are the largest.

The result shows that the friction nano generator provided by the embodiment of the application has good output performance.

Fig. 8 shows a schematic structural diagram of a flow guiding device according to an embodiment of the present application.

Based on the same inventive concept, as shown in fig. 8, the embodiment of the present application further provides a flow guiding device, which includes a flow guiding cover 20 and the friction nano-generator 10 according to any one of the above, the friction nano-generator 10 is covered on the surface of the flow guiding cover 20, and the flexible conductive layer 100 is connected with the rectifier 30, so as to conduct charges captured by the first friction layer 200 and the second friction layer 300 to the rectifier 30. In particular to some embodiments, the friction nano-generator 10 is adhered to the top cover 21 and the side wall 22 of the air guide sleeve 20, the friction nano-generator 10 adhered to the top cover 21 is connected with the friction nano-generator 10 adhered to the side wall 22 in series through the wire 50 to form a whole, the air guide sleeve 20 is connected with the vehicle body through the bracket 40, the rectifier 30 is arranged on the bracket 40, and the friction nano-generator 10 adhered to the side wall 22 is connected with the rectifier 30 through the wire 50 to complete current output.

Because the friction nano generator 10 is of a sheet-shaped flexible structure, the friction nano generator can be attached to the surface of a friction energy generating component, is suitable for different position structures of a vehicle, has almost no influence on the whole vehicle space arrangement, and can effectively collect energy. Thus, by integrating the integrated sheet-like friction nano generator 10 with the pod 20, it is possible to reduce the air resistance coefficient and recover the energy consumption such as wind friction and rain impact in the form of electric energy, and to provide the vehicle-mounted electric components and the battery with energy output as auxiliary energy.

Fig. 9 shows a schematic diagram of the operation of the friction nano-generator 10 in one implementation of an embodiment of the application;

fig. 10 shows a schematic circuit diagram of the friction nano-generator 10 in one implementation of an embodiment of the application.

The working principle of the friction nano generator 10 provided by the embodiment of the application is as follows:

the flow guiding device can be mounted on the headstock of a truck, a traction truck and the like. As shown in fig. 9 and 10, the friction nano-generator 10 can collect energy of the automobile in motion and at rest when it rains or has wind, and the collected current is output to the rectifier 30, and can be stored or used as auxiliary energy of the electric equipment 60 in the truck.

In summary, the embodiment of the application prepares the composite material of the molybdenum sulfide/zinc sulfide and the graphene with the nanostructure by a hydrothermal method, and then mixes the composite nano material with the polydimethylsiloxane, thereby effectively improving the electron capturing capability and further improving the output performance of the generator. Sodium bicarbonate is added in the curing process, and sodium bicarbonate is used as a sacrificial template to form rough surfaces and micropores in the friction layer. On one hand, the contact area is increased, meanwhile, the effective generation sites of charges are increased, and the charge density is increased. Meanwhile, polypyrrole is used as a conductive layer, so that compared with metal, the waterproof coating is not easy to oxidize, has good waterproof durability, and can improve the durability and stability of other parts when being combined with other parts.

Meanwhile, the friction nano generator 10 provided by the embodiment of the application is combined with the air guide sleeve 20 of the vehicle, and the shape of the friction nano generator 10 can be adjusted to be matched with the air guide sleeve 20 due to the flexibility of the friction nano generator 10. In addition, the conductive layer of the friction nano generator 10 is made of a high polymer material, has the characteristics of light weight, oxidation resistance, rain resistance and moisture resistance, and has a good cycle life.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few implementations of the present examples, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made to the present application without departing from the spirit of the embodiments of the application. Accordingly, the protection scope of the patent of the embodiments of the application shall be subject to the appended claims.

Claims

1. A friction nano-generator disposed on a surface of a pod, comprising:

the first friction layer and the second friction layer comprise a composite nanomaterial and polydimethylsiloxane, and the composite nanomaterial comprises molybdenum sulfide, zinc sulfide and graphene; the first friction layer and/or the second friction layer has a porous structure;

the preparation method of the friction nano generator comprises the following steps:

coating a flexible conductive layer on the surface of the first friction layer, and coating the other part of the gelatinous mixture on the surface of one side of the flexible conductive layer, which is away from the first friction layer, so as to obtain a second friction layer;

2. The friction nano-generator according to claim 1, wherein the mass ratio of graphene in the composite nano-material is 10% -20%.

3. The friction nano-generator of claim 2, wherein the mass ratio of the molybdenum sulfide, the zinc sulfide, and the graphene is 160:97:40.

4. the friction nano-generator of claim 1, wherein the flexible conductive layer is a polypyrrole layer.

5. The friction nano-generator according to claim 1, wherein the porous structure is formed on a side surface of the first friction layer and/or the second friction layer remote from the flexible conductive layer.

6. The friction nano-generator according to claim 1, wherein the porous structure is formed within the first friction layer and/or the second friction layer.

7. The friction nano-generator according to claim 1, wherein the pore size of each pore in the porous structure is 0.1 to 1 micron.

8. A friction nano generator according to any one of claims 1 to 7, wherein the thickness of the first friction layer and/or the second friction layer is 0.5 mm-1.5 mm.

9. A method of producing a friction nano-generator, characterized in that the method of producing a friction nano-generator is used for producing a friction nano-generator as claimed in any one of claims 1 to 8.

10. A flow guiding device, characterized by comprising a flow guiding cover and the friction nano generator as claimed in any one of claims 1 to 8, wherein the friction nano generator is covered on the surface of the flow guiding cover;