CN113746369A - Watt level piezoelectric energy conversion device and piezoelectric equipment based on simply supported beam type under traffic load - Google Patents
Watt level piezoelectric energy conversion device and piezoelectric equipment based on simply supported beam type under traffic load Download PDFInfo
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- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
The invention discloses a watt-level piezoelectric transducer device based on a simply supported beam type under traffic load, which comprises a piezoelectric transducer device, the piezoelectric transducer device comprises a shell, a plurality of piezoelectric beam units and an energy collecting unit, wherein the piezoelectric beam units and the energy collecting unit are arranged in the shell, the piezoelectric beam units are electrically connected with the energy collecting unit through leads, the piezoelectric beam type unit comprises a beam type supporting component, a plurality of piezoelectric thin sheet components and a metal dowel plate, the beam type supporting component comprises two oppositely arranged supporting members which are in a simple beam type structure, a metal dowel plate is vertically arranged between beam spans of the two oppositely arranged supporting members, a plurality of piezoelectric sheet components sequentially penetrate through the metal dowel plate, and two ends of the plurality of piezoelectric thin sheet components are sequentially and transversely inserted between the two supporting members, and the plurality of piezoelectric thin sheet components are simply supported and arranged. The device can collect piezoelectric energy under the action of road load, and energy is stored through the energy collecting system, so that watt-level energy output is realized.
Description
Technical Field
The invention relates to the research on the energy output of piezoelectric ceramics under the action of traffic load, in particular to a watt-level piezoelectric energy conversion device based on a simply supported beam under the traffic load, and also relates to a piezoelectric device based on the watt-level piezoelectric energy conversion device based on the simply supported beam under the traffic load
Background
With economic development of various countries, the problems of energy consumption and environmental pollution are increasingly aggravated, especially the environmental problems caused by the overproof emission of gases such as carbon dioxide, and currently, the reduction of carbon dioxide emission to realize carbon neutralization and the collection and utilization of green energy become the main targets of environmental protection and energy conservation of various countries. The realization of carbon neutralization requires transformation from an energy structure and the utilization of clean energy sources such as renewable resources, nuclear energy and the like to replace fossil fuels.
Recently, attention is paid to road energy collection, and phenomena such as pavement damage and the like are caused by consumption of mechanical energy and heat energy generated by a road under the action of a large amount of driving loads, while a piezoelectric energy collection technology can convert the consumed energy into electric energy and effectively protect the pavement by utilizing a piezoelectric effect, and the road piezoelectric energy is gradually applied to road engineering due to sustainability and good adaptability. Piezoelectric transducers attract attention of researchers as main devices in road piezoelectric energy collecting systems, and most of the piezoelectric transducers are limited by piezoelectric materials and have poor output performance due to the coupling property to the external environment.
SUMMARY OF THE PATENT FOR INVENTION
The invention aims to solve the technical problem of providing a watt-level piezoelectric energy conversion device based on a simply supported beam type under traffic load. The device converts mechanical energy into electric energy with high efficiency, so that the generating capacity and the generating efficiency are greatly improved.
Therefore, the invention provides a watt-level piezoelectric transducer device based on a simply supported beam type under traffic load, which comprises a piezoelectric transducer device, the piezoelectric transducer device comprises a shell, a plurality of piezoelectric beam units and an energy collecting unit, wherein the piezoelectric beam units and the energy collecting unit are arranged in the shell, the piezoelectric beam units are electrically connected with the energy collecting unit through leads, the piezoelectric beam type unit comprises a beam type supporting component, a plurality of piezoelectric thin sheet components and a metal dowel plate, the beam type supporting component comprises two oppositely arranged supporting members which are in a simple beam type structure, a metal dowel plate is vertically arranged between beam spans of the two oppositely arranged supporting members, a plurality of piezoelectric sheet components sequentially penetrate through the metal dowel plate, and two ends of the plurality of piezoelectric thin sheet components are sequentially and transversely inserted between the two supporting members, and the plurality of piezoelectric thin sheet components are simply supported and arranged.
Preferably, the casing includes upper cover plate, lower plate and lateral wall, and the lateral wall comprises the sectional type lateral wall, and the lateral wall is fixed respectively in lower plate outside portion, upper cover plate bottom is equipped with the rubber buffer layer, be carved with the recess group of multiunit and the adaptation of piezoelectricity beam type unit in the lower plate, the recess group is including biography power board groove and two supporting member grooves, the lateral wall inner wall has the slot that corresponds and the adaptation with piezoelectricity beam type unit supporting member, when piezoelectricity beam type unit was arranged in the casing, the outside supporting member of piezoelectricity beam type unit inserted along the slot, and the supporting member bottom is arranged in corresponding supporting member inslot, and metal biography power board is arranged in corresponding biography power board inslot.
Preferably, the piezoelectric sheet assembly consists of piezoelectric ceramics and a stainless steel substrate, the piezoelectric ceramics are fixed on the stainless steel substrate, the piezoelectric ceramics and the stainless steel substrate are welded with one end of a lead, and the other end of the lead is connected with the energy collecting unit.
Preferably, the energy collection unit includes a rectification unit and an integrated circuit, the rectification unit is a circuit board with a rectification bridge, the piezoelectric sheet assemblies are respectively connected with the rectification bridge on the circuit board through a wire, the integrated circuit is an energy management chip, and the energy management chip is connected with the circuit board through a wire.
Preferably, a plurality of support grooves which are uniformly distributed are carved on the side wall of each support member, the support grooves of the two support members are arranged oppositely, two ends of each piezoelectric sheet component are inserted into the support grooves respectively, and after two ends of each piezoelectric sheet component are inserted into the support grooves, a displacement space is reserved between each support groove and the corresponding piezoelectric sheet component and is used for the piezoelectric sheet component to displace in the support grooves.
In the invention, the piezoelectric transduction device adopts a simply supported beam type structure, the plurality of piezoelectric sheet components are arranged in a simply supported mode, gaps are formed among the simply supported piezoelectric sheet components, so that the upper direction and the lower direction of each group of piezoelectric sheets are provided with deformation spaces, each group of piezoelectric sheets can be fully deformed to generate the maximum generated energy through stress transfer of the metal force transfer plate, and compared with the traditional piezoelectric equipment, the piezoelectric transduction device outputs more electric quantity and has higher efficiency. Piezoelectric energy under the action of road load is collected, and energy is stored through an energy collecting system, so that watt-level energy output is realized.
Drawings
Fig. 1 is a schematic structural diagram of a watt-level piezoelectric transducer device based on a simply supported beam under traffic load according to a first embodiment of the present invention;
FIG. 2 is an exploded schematic view of a watt-level piezoelectric transducer device based on a simply supported beam type under traffic load in FIG. 1;
FIG. 3 is a schematic structural diagram of a piezoelectric beam type unit of the simply supported beam type watt-level piezoelectric transducer device in FIG. 1 under traffic load;
FIG. 4 is an exploded schematic view of an energy harvesting unit of a piezoelectric beam unit of the simply supported beam type watt-level piezoelectric transducer device in FIG. 1 under traffic load;
FIG. 5 is a schematic cross-sectional view of a watt-level piezoelectric transducer device based on a simply supported beam under traffic load according to a second embodiment of the present invention;
fig. 6 is an exploded structural schematic view of a piezoelectric device based on a simple beam watt level piezoelectric transducer device under traffic load according to a third embodiment of the present invention;
fig. 7 is a schematic cross-sectional structure view of the piezoelectric device based on the simply supported beam watt-level piezoelectric transducer device under traffic load, provided in fig. 6;
fig. 8 is a schematic structural diagram of a piezoelectric transducer of a piezoelectric device based on a simply supported beam watt-level piezoelectric transducer device under traffic load, which is provided in fig. 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.
Referring to fig. 1-4, the first embodiment of the present invention provides a watt-level piezoelectric transducer device based on a simply supported beam under traffic load, which comprises a piezoelectric transducer device 1, wherein the piezoelectric transducer device 1 comprises a housing 2, a plurality of piezoelectric beam units 3 and an energy collecting unit 4. The piezoelectric beam type unit 3 and the energy collecting unit 4 are arranged in the shell, and the piezoelectric beam type unit 3 is electrically connected with the energy collecting unit 4 through a lead. The energy collecting unit 4 is arranged in the middle of the inner cavity of the shell, and the piezoelectric beam type units 3 are uniformly distributed around the energy collecting unit.
The piezoelectric beam unit 3 comprises a beam support assembly, a plurality of piezoelectric foil assemblies 6 and a metal dowel plate 7. The metal dowel plate 7 is made of aluminum alloy plates through carving. The beam type supporting component comprises two oppositely arranged supporting members 5, the supporting members 5 are made of fiber-reinforced nylon materials, and the supporting members 5 are in a simple beam type structure. The vertical metal dowel plate 7 that sets up between 5 roof beam strides of two relative supporting member that set up, a plurality of piezoelectric thin slice subassemblies 6 pass metal dowel plate 7 in proper order, and a plurality of piezoelectric thin slice subassemblies 6 both ends transversely peg graft in proper order between two supporting member 5, and a plurality of piezoelectric thin slice subassemblies 6 are simply supported and arrange. The gaps are formed between the adjacent piezoelectric sheet assemblies in simple support arrangement, so that the upper direction and the lower direction of each group of piezoelectric sheets are deformed uniformly, and through stress transmission of the metal force transmission plate 7, each group of piezoelectric sheets can be deformed fully to generate the maximum generated energy, and compared with the traditional piezoelectric equipment, more electric quantity is output, and the generated electric energy is larger. The side wall of the supporting component 5 is carved with a plurality of evenly arranged support grooves 8, the side wall of the metal dowel plate 7 is provided with a plurality of open grooves 43 corresponding to the support grooves, and the piezoelectric sheet component 6 sequentially penetrates through the open grooves and two ends of the piezoelectric sheet component are inserted into the support grooves 8. After the two ends of the piezoelectric thin sheet component 6 are inserted into the support grooves 8, a displacement space is reserved between the support grooves 8 and the piezoelectric thin sheet component 6, and the displacement space is used for the piezoelectric thin sheet component 6 to displace in the support grooves 8. The displacement space provides a deformation space for the piezoelectric sheet, and the piezoelectric sheet assembly 6 realizes maximum deformation power generation in the support groove. When the load force is transmitted to the piezoelectric thin sheet assemblies, the metal force transmission plate sequentially transmits the load force to each piezoelectric thin sheet assembly layer by layer, each piezoelectric thin sheet assembly deforms to the maximum extent, the piezoelectric thin sheet assemblies convert mechanical energy into electric energy, the maximum generated energy is achieved, and the electric energy is transmitted to the energy collection unit.
The shell 2 comprises an upper cover plate 9, a lower bottom plate 10 and side walls 11, wherein the side walls 11 are composed of sectional type side walls, and the side walls 11 are respectively fixed at the outer side parts of the lower bottom plate. The casing is for adding fine nylon material, and casing 2 is made by CNC lathe sculpture, and it is fixed to glue the concatenation through epoxy between casing lower plate 10 and the lateral wall 11. The bottom of the upper cover plate 9 is provided with a rubber buffer layer 12, the rubber buffer layer 12 is in contact with the piezoelectric sheet assembly 6, and after the rubber buffer layer is stressed, the piezoelectric sheet assembly 6 can be maximally stressed by the rubber buffer layer. A plurality of groove sets matched with the piezoelectric beam type units are carved in the lower bottom plate 10, each groove set comprises a force transmission plate groove 13 and two supporting member grooves 14, and the inner wall of the side wall is provided with a slot 23 matched with the piezoelectric beam type unit. When the piezoelectric beam unit 3 is placed in the housing, its outer support member 5 is inserted along the slot 23, the bottom of the support member 5 is snapped into the corresponding support member slot 14, and the metal force transfer plate 7 is placed in the corresponding force transfer plate slot 13.
The piezoelectric sheet component 3 comprises piezoelectric ceramics 15 and a stainless steel substrate 16, wherein the piezoelectric ceramics 15 are fixed on the stainless steel substrate 16, the piezoelectric ceramics 15 and the stainless steel substrate 16 are welded with one end of a lead, and the other end of the lead is connected with the energy collecting unit 4.
The energy collecting unit 4 comprises a rectifying unit 17 and an integrated circuit 18, the rectifying unit 17 is a circuit board with a rectifying bridge 19, the piezoelectric thin sheet assemblies 6 are respectively connected with the rectifying bridge 19 on the circuit board through leads, the circuit board is a parallel circuit, the integrated circuit 18 is an energy management chip, and the energy management chip is connected with the circuit board through leads.
The integrated transducer device is connected into an external resistance box, a fatigue testing machine is operated to change loading conditions and matching impedance, the output voltage U and the output current I of the transducer are read through an oscilloscope, and the output voltage U and the output current I of the transducer are read through the oscilloscope
The maximum value of the comparison output power is calculated.
Referring to fig. 5, the second embodiment of the present invention provides a watt-level piezoelectric transducer device based on a simple beam under traffic load, which comprises a piezoelectric transducer device, and comprises a piezoelectric sheet assembly 6, a simple support seat 20, a lower base plate 10 and a force transmission rod 21, wherein the simple support seat 20 is fixed on the lower base plate 10, a support ledge 22 is arranged in the simple support seat, the piezoelectric sheet assembly 6 is placed on the support ledge 22 for simple support, and the force transmission rod 21 is fixed on the piezoelectric sheet assembly 20. The loading force acts on the piezoelectric thin sheet assembly 6 through the force transmission rod 21, and the piezoelectric thin sheet assembly is stressed and deformed to generate electric quantity. The periphery of the piezoelectric sheet component 6 is fixed on the supporting convex edge 22, the bottom of the inner cavity of the simply-supported support is provided with a space for the piezoelectric sheet to deform, and the piezoelectric sheet is deformed by an increased amount to generate electric quantity to the maximum extent.
Referring to fig. 6-8, a third embodiment of the present invention provides a piezoelectric device based on a simple beam type watt-level piezoelectric transducer device under traffic load, which is based on the piezoelectric transducer device in the first embodiment.
The piezoelectric equipment comprises a plurality of piezoelectric transducer devices 1 which are vertically distributed and are connected and installed by a force transmission device. The force transfer device comprises at least two force transfer rods 24, a bottom plate 25 and an upper load plate 26. The dowel bar 24 sequentially penetrates through the piezoelectric energy conversion devices 1, the bottom of the dowel bar 24 penetrates out of the bottom piezoelectric energy conversion device to be connected with the bottom plate 25, the top of the dowel bar 24 extends out of the top piezoelectric energy conversion device and is fixed on the upper loading plate 26, and an intermediate loading plate is arranged between every two adjacent piezoelectric energy conversion devices.
The number of the plurality of piezoelectric transducer devices is preferably three, including a top piezoelectric transducer 27, a middle piezoelectric transducer 28, and a bottom piezoelectric transducer 29. The middle loading plate comprises a middle loading plate 30 and a lower loading plate 31, the middle loading plate 30 is arranged between the top piezoelectric transducers 27 and the middle piezoelectric transducers 28, and the lower loading plate 31 is arranged between the middle piezoelectric transducers 28 and the bottom piezoelectric transducers 29. A plurality of first elastic devices 32 are arranged between the upper loading plate 26 and the upper cover plate 9 of the shell of the top piezoelectric transducer 27, and the first elastic devices 32 are respectively sleeved on the dowel bars 24. The upper end of the middle loading plate 30 is abutted against the bottom of the lower bottom plate of the shell of the top piezoelectric transducer, a plurality of second elastic devices 33 are arranged between the lower end of the middle loading plate 30 and the upper cover plate of the shell of the middle piezoelectric transducer 28, and the second elastic devices 33 are respectively sleeved on the dowel bars. The upper end surface of the lower loading plate 31 abuts against the bottom of the lower bottom plate of the middle piezoelectric transducer shell, and the lower end surface of the lower loading plate 31 abuts against the top of the upper cover plate of the bottom piezoelectric transducer shell. The first elastic means 32 have a greater length than the second elastic means 33. The distance between the loading plate and the piezoelectric transducers is set through the first elastic device 32 and the second elastic device 33, the distance between the upper loading plate 26 and the top piezoelectric transducer 27 is the farthest, the distance between the middle loading plate 30 and the middle piezoelectric transducer 28 is the second, and the lower loading plate 31 is abutted against the surface of the bottom piezoelectric transducer 29. When the vehicle load force is transmitted to the upper loading plate 26, the force applied to the upper loading plate 26 is transmitted downwards through the force transmission rod 21, and because the gap distance exists between the upper loading plate 26 and the top piezoelectric transducer 27 and between the middle loading plate 30 and the middle piezoelectric transducer 28, the upper loading plate 26 is not directly stressed and transmitted to the top piezoelectric transducer 27, but the stress is transmitted to the lower loading plate 31 through the force transmission rod 21, the stress is applied to the bottom piezoelectric transducer 29 through the lower loading plate 31, and the piezoelectric sheet assembly in the bottom piezoelectric transducer is stressed and deformed to generate electric quantity which is transmitted to the energy collection unit through the lead. The force transmission rod 21 drives the lower loading plate 31 to transmit stress downwards, then the second elastic device 33 of the middle loading plate 30 is pressed downwards under stress, the middle loading plate 30 applies stress to the middle piezoelectric transducer 28, the piezoelectric sheet assembly 6 in the middle piezoelectric transducer 28 deforms under stress to generate electric quantity, finally the upper loading plate 26 presses the first elastic device 32 downwards under stress, the upper loading plate 26 applies pressure to the top piezoelectric transducer 27, and the piezoelectric sheet assembly in the top piezoelectric transducer 27 deforms under stress to generate electric quantity. The first elastic means 32 and the second elastic means 33 are preferably springs, and since the first elastic means 32 is longer than the second elastic means 33, the loading plate applies pressure to the corresponding piezoelectric transducer before the upper loading plate. Through the arrangement of the first elastic device 32 and the second elastic device 33, the force transmission rod 24 transmits force to the bottom piezoelectric transducer 29, then to the middle piezoelectric transducer, and finally to the top piezoelectric transducer 27, so that the vehicle load force is transmitted to each piezoelectric transducer, and the stress is effectively transmitted. If the vehicle load force is directly transmitted to the piezoelectric transducer at the top, the load force received by the middle piezoelectric transducer and the bottom piezoelectric transducer is small, effective deformation cannot be realized, and the generated electric power is small. The loading power that the vehicle produced in the twinkling of an eye is great, and the unable fully abundant utilization of individual layer piezoelectric transducer, most loading power is extravagant. Through vertical many lamination piezoelectric transducer that set up for vehicle loading power has obtained abundant utilization, and each lamination piezoelectric transducer all can warp the electricity generation.
The inner cavity of the shell of the piezoelectric transducer device is provided with a plurality of groups of annular piezoelectric components 34, the annular piezoelectric components are arranged in the gaps between the adjacent piezoelectric thin sheet components 6, and the number of the annular piezoelectric components is the same as that of the dowel bars. The lower bottom plate of the shell is internally provided with an accommodating groove 35 for accommodating the annular piezoelectric assembly, and the annular piezoelectric assembly 34 is arranged in the accommodating groove 35. The lower bottom plate and the upper cover plate of the inner cavity of the shell of the top piezoelectric transducer, the middle piezoelectric transducer and the bottom piezoelectric transducer are respectively provided with a through hole 36 corresponding to the dowel bar, the through hole of the lower bottom plate is positioned at the bottom of the accommodating groove, and the middle through hole 37 of the annular piezoelectric component corresponds to and is communicated with the through hole of the lower bottom plate. When the dowel bar 21 passes through the piezoelectric transducer device, the upper cover plate through hole of the piezoelectric transducer shell penetrates into the inner cavity of the shell, passes through the middle through hole 37 of the annular piezoelectric component and then passes through the lower bottom plate through hole of the piezoelectric transducer shell.
The parts of the dowel bars 24 in the inner cavity of the piezoelectric transducer housing are provided with a force transmission block 38, the force transmission block 38 is positioned above the annular piezoelectric component 34, and the end parts of the force transmission blocks 38 facing the annular piezoelectric component are provided with rubber buffer pads 39. Under the condition of no stress, the force transmission block 38 always supports against the inner surface of the upper cover plate, and the force transmission rod is limited. Under the condition of stress, the force transmission block 38 is stressed to transmit stress to the annular piezoelectric assembly. The distance between the force transfer block in the top piezoelectric transducer and the annular piezoelectric component is the same as the distance between the upper loading plate and the top piezoelectric transducer, the distance between the force transfer block in the middle piezoelectric transducer and the annular piezoelectric component is the same as the distance between the middle loading plate and the middle piezoelectric transducer, and the force transfer block in the bottom piezoelectric transducer is abutted against the upper surface of the annular piezoelectric component.
The annular piezoelectric assembly is composed of a plurality of annular piezoelectric patches 40 which are vertically distributed in sequence, a silica gel gasket 41 is arranged between every two adjacent annular piezoelectric patches, and the annular piezoelectric patches 40 are respectively connected with the energy collecting unit 4 through leads. The annular piezoelectric patch consists of an annular metal substrate and annular piezoelectric ceramics. The edge of holding tank 35 bottom is provided with edgewise 42, and annular piezoelectric assembly places on the edgewise 42 of holding tank, and annular piezoelectric assembly bottom has the deformation space with the holding tank bottom. Annular piezoelectric component also can design into once pegging graft in the holding tank, all has the deformation space between the adjacent annular piezoelectric piece. The arrangement of the annular piezoelectric component makes full use of the vacant space in the shell of the piezoelectric transducer, and the load force of the vehicle is fully utilized.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the present patent application are considered to be within the scope of the present patent application by those of ordinary skill in the art without departing from the inventive concepts herein.
Claims (10)
1. The utility model provides a watt level piezoelectricity transducer device based on simply supported beam formula under traffic load, includes the piezoelectric transducer device, characterized by: the piezoelectric transducer device comprises a shell, a plurality of piezoelectric beam type units and an energy collecting unit, wherein the piezoelectric beam type units and the energy collecting unit are arranged in the shell and are electrically connected with the energy collecting unit through a lead, each piezoelectric beam type unit comprises a beam type supporting component, a plurality of piezoelectric sheet assemblies and a metal dowel plate, each beam type supporting component comprises two oppositely arranged supporting members, each supporting member is of a simply supported beam type structure, the metal dowel plate is vertically arranged between two beam spans of the two oppositely arranged supporting members, the plurality of piezoelectric sheet assemblies sequentially penetrate through the metal dowel plate, two ends of the plurality of piezoelectric sheet assemblies are sequentially and transversely inserted between the two supporting members, and the plurality of piezoelectric sheet assemblies are arranged in a simply supported mode.
2. The watt-level piezoelectric transducer device based on the simply supported beam type under traffic load as claimed in claim 1, wherein: the casing includes upper cover plate, lower plate and lateral wall, and the lateral wall comprises sectional type lateral wall, and the lateral wall is fixed respectively in lower plate outside portion, the upper cover plate bottom is equipped with the rubber buffer layer, be carved with the groove set of multiunit and piezoelectric beam type unit adaptation in the lower plate, the groove set is including biography power board groove and two supporting member grooves, the lateral wall inner wall has the slot that corresponds and the adaptation with piezoelectric beam type unit supporting member, when piezoelectric beam type unit was arranged in the casing, the outside supporting member of piezoelectric beam type unit inserts along the slot, and the supporting member inslot that corresponds is arranged in to the supporting member bottom, and metal biography power board is arranged in corresponding biography power board inslot.
3. The watt-level piezoelectric transducer device based on the simply supported beam type under the traffic load according to claim 1 or 2, which is characterized in that: the piezoelectric sheet component comprises piezoelectric ceramics and a stainless steel substrate, wherein the piezoelectric ceramics are fixed on the stainless steel substrate, the piezoelectric ceramics and the stainless steel substrate are welded with one end of a lead, and the other end of the lead is connected with an energy collecting unit.
4. The watt-level piezoelectric transducer device based on the simply supported beam type under the traffic load as claimed in claim 3, wherein: the energy collecting unit comprises a rectifying unit and an integrated circuit, the rectifying unit is a circuit board with a rectifying bridge, the piezoelectric thin sheet assemblies are respectively connected with the rectifying bridge on the circuit board through leads, the integrated circuit is an energy management chip, and the energy management chip is connected with the leads of the circuit board.
5. A simply supported beam type watt-level piezoelectric transducer device under traffic load according to claim 1, 2 or 4, wherein: the supporting component lateral wall is carved with a plurality of support grooves of evenly arranging, and two supporting component's support groove sets up relatively, and piezoelectric thin slice subassembly both ends insert the support inslot respectively, inserts back in the support inslot at piezoelectric thin slice subassembly both ends, leaves the displacement space between support groove and the piezoelectric thin slice subassembly, and the displacement space supplies piezoelectric thin slice subassembly to displace in the support inslot.
6. The utility model provides a watt level piezoelectricity transducer device based on simply supported beam formula under traffic load, includes the piezoelectric transducer device, characterized by: the piezoelectric thin-sheet component comprises a piezoelectric thin-sheet component, a simple support, a lower bottom plate and a force transmission rod, wherein the simple support is fixed on the lower bottom plate, a supporting convex edge is arranged in the simple support, the piezoelectric thin-sheet component is arranged on the supporting convex edge, and the force transmission rod is fixed on the piezoelectric thin-sheet component.
7. A piezoelectric device based on the simply supported beam type watt level piezoelectric transducer device under traffic load of claim 1, which is characterized in that: comprises a plurality of piezoelectric transducer devices which are vertically arranged and are connected and installed by a force transmission device, a plurality of groups of annular piezoelectric components are arranged in the inner cavity of the shell of each piezoelectric transducer device, the annular piezoelectric components are arranged in the gaps between the adjacent piezoelectric thin sheet components, the force transmission device comprises at least two force transmission rods, a bottom plate and an upper loading plate, the dowel bar sequentially passes through the plurality of piezoelectric transducing devices, the bottom of the dowel bar passes through the bottom piezoelectric transducing device to be connected with the bottom plate, the top of the dowel bar extends out of the top piezoelectric transducer device and is fixed on the upper loading plate, a middle loading plate is arranged between the adjacent piezoelectric transducer devices, when the dowel bar passes through the piezoelectric energy conversion device, the upper cover plate of the piezoelectric energy conversion device shell penetrates into the inner cavity of the shell, passes through the middle part of the annular piezoelectric assembly and then penetrates out of the lower bottom plate of the piezoelectric energy conversion device shell.
8. The piezoelectric device based on the simply supported beam type watt level piezoelectric transducer device under traffic load according to claim 7, wherein: the number of the piezoelectric transducer devices is preferably three, the piezoelectric transducer devices comprise a top piezoelectric transducer, a middle piezoelectric transducer and a bottom piezoelectric transducer, the middle loading plate comprises a middle loading plate and a lower loading plate, the middle loading plate is arranged between the top piezoelectric transducer and the middle piezoelectric transducer, the lower loading plate is arranged between the middle piezoelectric transducer and the bottom piezoelectric transducer, a plurality of first elastic devices are arranged between the upper loading plate and an upper cover plate of a shell of the top piezoelectric transducer, the first elastic devices are respectively sleeved on a force transmission rod, the upper end part of the middle loading plate is abutted against the bottom of a lower bottom plate of the shell of the top piezoelectric transducer, a plurality of second elastic devices are arranged between the lower end part of the middle loading plate and an upper cover plate of the shell of the middle piezoelectric transducer, the second elastic devices are respectively sleeved on the force transmission rod, and the upper end surface of the lower loading plate is abutted against the bottom of the lower bottom plate of the shell of the middle piezoelectric transducer, the lower end surface of the lower loading plate is abutted against the top of the upper cover plate of the shell of the piezoelectric transducer at the bottom, and the length of the first elastic device is greater than that of the second elastic device.
9. The piezoelectric device based on the simply supported beam type watt level piezoelectric transducer device under traffic load according to claim 8, wherein: all be provided with the through-hole that corresponds with the dowel bar on top piezoelectric transducer, intermediate part piezoelectric transducer and bottom piezoelectric transducer's the casing inner chamber lower plate and the upper cover plate, the holding tank of annular piezoelectric subassembly adaptation has in the casing lower plate, and the through-hole of lower plate is located the holding tank bottom, annular piezoelectric subassembly places in the holding tank, and annular piezoelectric subassembly's centre through-hole corresponds and switches on with the lower plate through-hole, the part that the dowel bar is located piezoelectric transducer casing inner chamber all is provided with one and passes power the piece, passes power the piece and is located annular piezoelectric subassembly top, under the condition of atress not, passes power the piece and supports in the upper cover plate internal surface all the time, under the atress condition, passes power piece atress to annular piezoelectric subassembly direction transmission stress.
10. A piezoelectric device based on a simply supported beam watt level piezoelectric transducer unit under traffic load as claimed in claim 7 or 8 or 9 wherein: annular piezoelectric component comprises a plurality of annular piezoelectric patches, and a plurality of annular piezoelectric patches are range upon range of the distribution in proper order, have the silica gel gasket between the adjacent annular piezoelectric patch, and annular piezoelectric patch is connected with the energy harvesting unit through the wire respectively, holding tank bottom edge is provided with the edgewise, and annular piezoelectric component places on the edgewise of holding tank, and annular piezoelectric component bottom has a void space with the holding tank bottom, the tip of biography power piece towards annular piezoelectric component is provided with rubber buffer.
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