CN106014887A - Suspension self-excitation runner piezoelectric beam energy harvester - Google Patents

Suspension self-excitation runner piezoelectric beam energy harvester Download PDF

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Publication number
CN106014887A
CN106014887A CN201610459387.6A CN201610459387A CN106014887A CN 106014887 A CN106014887 A CN 106014887A CN 201610459387 A CN201610459387 A CN 201610459387A CN 106014887 A CN106014887 A CN 106014887A
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China
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piezoelectric
end cap
side plate
magnet
disk body
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CN201610459387.6A
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CN106014887B (en
Inventor
张忠华
文欢
程光明
阚君武
王淑云
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Zhipu Qiwang Wenzhou Electric Power Technology Research Institute Co ltd
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Zhejiang Normal University CJNU
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G3/00—Other motors, e.g. gravity or inertia motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The invention relates to a suspension self-excitation runner piezoelectric beam energy harvester and belongs to the field of piezoelectric power generation. A left end cap, a disc body, a side plate and a right end cap are sequentially connected and are arranged on a cantilevered shaft in a sleeving mode. A cantilever beam of a metal substrate and a bonded piezoelectric crystal plate between the left end cap and the disc body form a piezoelectric vibrator, and a cantilever beam of a metal substrate and a bonded piezoelectric crystal plate between the side plate and the right end cap form a piezoelectric vibrator. The piezoelectric vibrators are provided with excited magnetics. An exciter is mounted in a slideway form by the cantilevered shaft and an annular cavity of the disc body. Balls are embedded in the inner edge and the outer edge of the exciter, and exciting magnets are embedded in the two sides of the exciter. The piezoelectric vibrators on the two sides of the exciter are equal in number and are symmetrically mounted. The side of the left end cap, the side of the disc body, the side of the side plate and the side of the right end cap which are adjacent to the piezoelectric vibrators are provided with limiting faces and sink grooves which are identical in shape, size and number. The suspension self-excitation runner piezoelectric beam energy harvester has the advantages and characteristics that fixing and supporting are not needed, structure is simple, and rotation force to the exciter is small; the piezoelectric vibrators are reasonable in structure and equal in stress of points after deformation, the power generation amount is large, the reliability is high, and effective frequency band is wide; and the suspension self-excitation runner piezoelectric beam energy harvester can be used as a standardized part to be applied to cantilevered shaft gears and the multi-gear coaxial occasions.

Description

A kind of suspension self-excitation runner piezoelectric beam energy accumulator
Technical field
The invention belongs to new forms of energy and technical field of power generation, be specifically related to a kind of suspension self-excitation runner piezoelectric beam energy accumulator, The health monitoring systems being relatively fixed support rotary structure for inconvenience installations such as gear of wind driven generator axles is powered.
Background technology
Gear-box is the critical component of wind power generating set, and its function is transmission power.When wind-driven generator runs well, The rotating speed of wind wheel is relatively low, cause generator efficiency relatively low, therefore need to be by gear-box speedup to improve generating capacity and efficiency.Due to Wind turbine gearbox is operated under speed change varying load environment, therefore easily breaks down；Additionally, maintenance is tired when wind turbine gearbox breaks down Difficulty and cost are high, and wind turbine gearbox runs and maintenance cost may be up to the 30% of overall operation cost.Therefore, there has been proposed The gear-box real-time monitoring system for state of various ways and method, to obtaining each relevant parameter of gear-box in real time, sending out in time Now and solve problem, thus reduce device damage degree and maintenance cost.At present, the key element of wind turbine gearbox monitoring includes tooth All many-sides such as the load of moving component, vibration and temperature such as wheel, bearing and wheel shaft.
For the monitoring of gear and axle, preferable method is to be arranged on gear or axle by all kinds of sensing and monitoring systems Or install near gear or axle, thus realize the direct-on-line monitoring of its running status；But this monitoring scheme is because being biography Reliable, the sufficient supply of electric power that provides of sense monitoring system is difficult to popularization and application, and reason is: 1. gear and axle are in rotation Kinestate, it is impossible to pass through cable power supply；2. as used battery to power, need to often change because battery is limited, when Battery electric quantity is not enough and will be unable to realize effectively monitoring when changing the most in time；3. away from cantilevered axle and the end tooth thereof of bearing block When wheel and multiple gear are coaxial, all cannot be sent out by relative motion structure microminiature between swing pinion or axle and securing supports Motor.It is limited to the monitoring system energy supply problem of wind turbine gearbox gear, axle and bearing etc., current reality also cannot realize Real time on-line monitoring truly.
Summary of the invention
For the problem existing for wind turbine gearbox monitoring system power supply aspect, the present invention proposes a kind of suspension self-excitation runner Piezoelectric beam energy accumulator.The present invention adopted implementation scheme is that left end cap, disk body, side plate and right end cap pass sequentially through screw and be connected Connecing, left end cap, disk body and side plate are enclosed within the cantilevered axle of gear, and right end cap is connected with cantilevered axle；Cantilevered axle and disk body and side plate Center between be equipped with sealing ring；Metal basal board all it is crimped with between left end cap and disk body and between side plate and right end cap, Cantilever beam on metal basal board constitutes piezoelectric vibrator with bonding piezoelectric chip；Piezoelectric vibrator free end is provided with by excitatory Ferrum, excited magnet is installed near disk body or side plate and is placed in the rectangle guide groove of disk body side or side plate side；Cantilevered axle with Disk body ring cavity constitutes slideway, is filled with lubricating oil, is provided with the activator of nonferromugnetic material, in activator in outer rim in slideway It is inlaid with the ball for Structure deformation, is inlaid with exciting magnet to lateral symmetry；Activator both sides piezoelectric vibrator quantity is equal And be symmetrically installed；When activator side piezoelectric vibrator and exciting magnet quantity are both greater than 1, two adjacent piezoelectric vibrator symmetrical center line Between angle and the angle between two adjacent exciting magnet centers and the disk body line of centres between can not integral multiple each other；Activator is same On the circumference of side two, the configuration direction, pole of adjacent excited magnet magnetic is identical, the opposite pole phase of the coaxial excited magnet in activator both sides To installation；On the circumference of activator the same side two, the pole configuration of adjacent actuators Magnet is in opposite direction, activator both sides coaxial excitation The opposite pole of Magnet is mounted opposite, to guarantee that activator is not by responsive to axial force；On left end cap, disk body, side plate and right end cap The side adjacent with piezoelectric vibrator is designed with shape yardstick and the identical confined planes of quantity and deep gouge；Deep gouge is used for accommodating piezo crystals Sheet, its planar dimension is more than piezoelectric chip, less than metal cantilever beams；Confined planes is for limiting the deflection of piezoelectric vibrator, spacing Face is arc surface and its rational radius of curvature depends on metal basal board and piezoelectric chip parameter.
In the present invention, for improving piezoelectric vibrator generating capacity and reliability, piezoelectric chip is PZT4, the gold of 0.2～0.3mm Genus substrate is beryllium-bronze, and metal basal board is 1～2.5 with the ratio scope of the thickness of piezoelectric chip, now the generating energy of piezoelectric vibrator Power compared with strong, energy comparison is big；Energy than the piezoelectric vibrator first order buckling referring to variant thickness ratio deform produced electric energy with Maximum therein bigger；PZT4 and the piezoelectric vibrator of beryllium-bronze substrate composition, the conjunction of confined planes are utilized for the present invention Reason radius of curvature isWherein α=hm/hpFor thickness ratio, hmAnd hpIt is respectively Metal basal board and piezoelectric chip thickness.
In work process, gear cantilevered axle drives left end cap, disk body, side plate, right end cap, piezoelectric vibrator and excited magnet to turn Dynamic；In disk body rotation process, activator is in the bottom of slideway under the effect of its inertia force, so that exciting magnet and being subject to Relative motion is produced between excitatory ferrum.When piezoelectric vibrator and excited magnet go to exciting magnet close to time, excited magnet with swash Axial force between field core is gradually increased, and piezoelectric vibrator produces axial bending deformation；When excited magnet and exciting magnet During the overlap of center, the exciting force suffered by piezoelectric vibrator is maximum, deflection is maximum, and metal cantilever beams will abut on confined planes completely； Hereafter, the deflection of piezoelectric vibrator is gradually reduced along with rotating further of disk body and is gradually brought to original state；Above-mentioned During being gradually distance from again after excited magnet is close to each other with exciting magnet, piezoelectric vibrator completes and once generates electricity.
Advantage and characteristic: the present invention utilizes the relative motion between the inertia force realization of activator and runner and encourages piezoelectricity to shake Sub-axial bending, it is not necessary to extraneous fixing support, rotatory force suffered by simple in construction and activator little；Piezoelectric vibrator deflection is by spacing Radius surface determines, deform after each point stress identical, therefore generated energy is big, reliability is high, effective band width；Can use as building block In the coaxial occasion of cantilevered axle gear and multi-gear, it is achieved the gear on-line monitoring of real meaning.
Accompanying drawing explanation
Fig. 1 is the structural representation of energy accumulator in a preferred embodiment of the present invention；
The A-A sectional view of Fig. 2 Fig. 1；
Fig. 3 is the structural representation after runner and side plate combine in a preferred embodiment of the present invention；
Fig. 4 is the left view of Fig. 4；
Fig. 5 is the structural representation of right end cap in a preferred embodiment of the present invention；
Fig. 6 is the left view of Fig. 5；
Fig. 7 is the structural representation after piezoelectric vibrator and excited magnet assemble in a preferred embodiment of the present invention；
Fig. 8 is that in a preferred embodiment of the present invention, the ratio of piezoelectric vibrator generated energy compares relation curve with thickness.
Detailed description of the invention
Left end cap b, disk body a, side plate j and right end cap c pass sequentially through screw and are connected, left end cap b, disk body a and side plate j set In cantilevered axle f of gear e, right end cap c is connected with cantilevered axle f by screw；The centre bore a2 of cantilevered axle f and disk body a and side It is equipped with sealing ring o between the centre bore j2 of plate j；All crimp between left end cap b with disk body a and between side plate j with right end cap c Having metal basal board h1, the cantilever beam h11 on metal basal board h1 and bonding piezoelectric chip h2 constitutes piezoelectric vibrator h；Piezoelectricity shakes Sub-h free end is provided with excited magnet g, excited magnet g through screw and installs near disk body a or side plate j and be placed in disk body a side In rectangle guide groove a1 or in the rectangle guide groove j1 of side plate j side；Cantilevered axle f constitutes slideway D with the ring cavity a3 of disk body a, sliding Be filled with lubricating oil in road D, the activator d of nonferromugnetic material be installed, the inner edge of activator d and outer rim are inlaid with for The ball k of Structure deformation, it is inlaid with exciting magnet i to lateral symmetry；The quantity of the piezoelectric vibrator h of activator d both sides equal and It is symmetrically installed relative to activator d；When the quantity of activator d side piezoelectric vibrator h and exciting magnet i is both greater than 1, two adjacent pressures Angle Q1 between the symmetrical center line of electric tachometer indicator h and the angle between two adjacent exciting magnet i centers and disk body a centre of gyration line Can not integral multiple each other between Q2；On the circumference of activator d the same side two, the configuration direction, pole of adjacent excited magnet magnetic g is identical, swashs The opposite pole encouraging device d both sides coaxial excited magnet g is mounted opposite；Adjacent actuators Magnet i on the circumference of activator d the same side two Pole configuration is in opposite direction, and the opposite pole of activator d both sides coaxial excitation Magnet i is mounted opposite, to guarantee that activator d is not subject to Responsive to axial force；On left end cap b, disk body a, side plate j and right end cap c, the side adjacent with piezoelectric vibrator h is designed with shape yardstick And the identical confined planes M of quantity and deep gouge C；Deep gouge C is used for accommodating piezoelectric chip h2, its planar dimension more than piezoelectric chip h2, Less than metal cantilever beams h11；Confined planes M is for limiting the deflection of piezoelectric vibrator h, and confined planes M is arc surface and it is rational Radius of curvature depends on metal basal board h1 and the parameter of piezoelectric chip h2.
In the present invention, for improving generating capacity and the reliability of piezoelectric vibrator h, piezoelectric chip is 0.2～0.3mm PZT4, metal basal board are beryllium-bronze, and the ratio of the thickness of metal basal board h1 and piezoelectric chip h2 is 1～2.5, now piezoelectric vibrator h Generating capacity compared with strong, energy comparison is big；Energy is produced than the piezoelectric vibrator h first order buckling deformation referring to variant thickness ratio Electric energy and maximum therein bigger；PZT4 and the piezoelectric vibrator of beryllium-bronze substrate composition, limit are utilized for the present invention The reasonable radius of curvature of plane M isWherein α=hm/hpFor thickness ratio, hm And hpIt is respectively metal basal board h1 and the thickness of piezoelectric chip h2.
In work process, cantilevered axle f of gear e drive left end cap b, disk body a, side plate j, right end cap c, piezoelectric vibrator h and Excited magnet g rotates；In disk body a rotation process, activator d is in the bottom of slideway D under the effect of its inertia force, thus Make to produce between exciting magnet i and excited magnet g relative motion.When piezoelectric vibrator h and excited magnet g goes to and exciting magnet i Close to time, the axial force between excited magnet g and exciting magnet i is gradually increased, piezoelectric vibrator h produce axial bending deformation； When excited magnet g is overlapping with the center of exciting magnet i, the exciting force suffered by piezoelectric vibrator h is maximum, deflection is maximum, and metal hangs Arm beam h11 will abut on confined planes M completely；Hereafter, the deflection of piezoelectric vibrator h along with rotating further of disk body a by The least and be gradually brought to original state；The mistake being gradually distance from again after above-mentioned excited magnet g and exciting magnet i is close to each other Cheng Zhong, piezoelectric vibrator h complete and once generate electricity.
Obviously, the present invention utilizes the relative motion between the inertia force realization of activator d and disk body a and encourages piezoelectric vibrator h Axial bending, it is not necessary to extraneous fixing support, rotatory force suffered by simple in construction and activator little；The deflection of piezoelectric vibrator h is by limiting The radius of plane M determines, deform after each point stress identical, therefore generated energy is big, reliability is high, effective band width；Can be used for cantilever Shaft gear and the coaxial occasion of multi-gear, it is achieved the gear of real meaning and the on-line monitoring of axle system.

Claims (1)

1. a suspension self-excitation runner piezoelectric beam energy accumulator, it is characterised in that: left end cap, disk body, side plate and right end cap lead to successively Crossing screw to be connected, left end cap, disk body and side plate are enclosed within the cantilevered axle of gear, and right end cap is connected with cantilevered axle；Cantilevered axle and dish It is equipped with sealing ring between body and the center of side plate；Gold all it is crimped with between left end cap and disk body and between side plate and right end cap Belonging to substrate, the cantilever beam on metal basal board constitutes piezoelectric vibrator with bonding piezoelectric chip；Piezoelectric vibrator free end is provided with Excited magnet, excited magnet is installed near disk body or side plate and is placed in the rectangle guide groove of disk body or side plate side；Cantilevered axle With disk body ring cavity constitute slideway, be filled with lubricating oil in slideway, activator be installed, be inlaid with in outer rim in activator ball, It is inlaid with exciting magnet to lateral symmetry；Activator both sides piezoelectric vibrator quantity is equal and is symmetrically installed；Activator side piezoelectricity When oscillator and exciting magnet quantity are both greater than 1, the angle between two adjacent piezoelectric vibrator symmetrical center line and two adjacent exciting magnets Can not integral multiple each other between angle between center and the disk body line of centres；Adjacent excited magnet on the circumference of activator the same side two The configuration direction, pole of magnetic is identical, the opposite pole of the coaxial excited magnet of both sides is mounted opposite, on the circumference of activator the same side two The pole configuration of adjacent actuators Magnet is in opposite direction, the opposite pole of the coaxial excitation Magnet of both sides is mounted opposite；Left end cap, dish Side adjacent with piezoelectric vibrator on body, side plate and right end cap is designed with shape yardstick and the identical confined planes of quantity and deep gouge, Deep gouge planar dimension is more than piezoelectric chip, less than metal cantilever beams, and confined planes is arc surface；Piezoelectric chip is 0.2～0.3mm PZT4, metal basal board are beryllium-bronze, and metal basal board is 1～2.5 with the ratio scope of the thickness of piezoelectric chip；The reasonable song of confined planes Rate radius isWherein α=hm/hpFor thickness ratio, hmAnd hpIt is respectively gold Belong to substrate and piezoelectric chip thickness.
CN201610459387.6A 2016-06-15 2016-06-15 A kind of suspension self-excitation runner piezoelectric beam energy accumulator Active CN106014887B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107332463A (en) * 2017-08-17 2017-11-07 浙江师范大学 A kind of new type train bearing monitor system generator
CN107359815A (en) * 2017-08-17 2017-11-17 浙江师范大学 A kind of rotary piezoelectric generator of radial direction tension and compression excitation
CN107395051A (en) * 2017-08-17 2017-11-24 浙江师范大学 A kind of railroad train bearing monitor system generator
CN107482868A (en) * 2017-08-17 2017-12-15 浙江师范大学 A kind of water flow generator of magnetic coupling step-by-step excitation
CN112202361A (en) * 2020-09-29 2021-01-08 长春工业大学 Energy collecting device based on windmill toy

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JPH06141563A (en) * 1992-10-27 1994-05-20 Seiko Instr Inc High torque ultrasonic actuator
JP2006180589A (en) * 2004-12-21 2006-07-06 Canon Inc Ultrasonic motor
CN102801356A (en) * 2012-09-01 2012-11-28 浙江师范大学 Magnetic force coupling axial excitation-based rotary disk type piezoelectric generator
CN103269181A (en) * 2013-05-31 2013-08-28 浙江师范大学 Suspending hammer self-excitation wheel type generator
CN103312215A (en) * 2013-05-31 2013-09-18 浙江师范大学 Shaft end overhanging-type piezoelectric beam generator based on clamp limit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06141563A (en) * 1992-10-27 1994-05-20 Seiko Instr Inc High torque ultrasonic actuator
JP2006180589A (en) * 2004-12-21 2006-07-06 Canon Inc Ultrasonic motor
CN102801356A (en) * 2012-09-01 2012-11-28 浙江师范大学 Magnetic force coupling axial excitation-based rotary disk type piezoelectric generator
CN103269181A (en) * 2013-05-31 2013-08-28 浙江师范大学 Suspending hammer self-excitation wheel type generator
CN103312215A (en) * 2013-05-31 2013-09-18 浙江师范大学 Shaft end overhanging-type piezoelectric beam generator based on clamp limit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107332463A (en) * 2017-08-17 2017-11-07 浙江师范大学 A kind of new type train bearing monitor system generator
CN107359815A (en) * 2017-08-17 2017-11-17 浙江师范大学 A kind of rotary piezoelectric generator of radial direction tension and compression excitation
CN107395051A (en) * 2017-08-17 2017-11-24 浙江师范大学 A kind of railroad train bearing monitor system generator
CN107482868A (en) * 2017-08-17 2017-12-15 浙江师范大学 A kind of water flow generator of magnetic coupling step-by-step excitation
CN107395051B (en) * 2017-08-17 2023-05-16 浙江师范大学 Generator for railway train bearing monitoring system
CN107359815B (en) * 2017-08-17 2023-05-16 浙江师范大学 Radial tension-compression excited rotary piezoelectric generator
CN107332463B (en) * 2017-08-17 2023-05-26 浙江师范大学 Novel generator for train bearing monitoring system
CN107482868B (en) * 2017-08-17 2023-05-26 浙江师范大学 Magnetic coupling step-by-step excitation water flow generator
CN112202361A (en) * 2020-09-29 2021-01-08 长春工业大学 Energy collecting device based on windmill toy

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Assignee: Wenzhou xiehong complete cabinet Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980015522

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240920

EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20161012

Assignee: ZHEJIANG SHANGHAO ELECTRONIC TECHNOLOGY CO.,LTD.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016247

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240925

Application publication date: 20161012

Assignee: Zhejiang Keyi Plastic Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016240

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240925

Application publication date: 20161012

Assignee: GuJie Power Technology Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016238

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240925

EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20161012

Assignee: ZHEJIANG WEXA ELECTRIC APPLIANCE CO.,LTD.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016469

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240927

Application publication date: 20161012

Assignee: Zhejiang tefa Electric Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016330

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240927

EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20161012

Assignee: Zhejiang Galaxy Cable Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016705

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240930

Application publication date: 20161012

Assignee: Yueqing Kedajia Telecommunication Cable Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016699

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20240930

EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20161012

Assignee: ZHEJIANG HAINA ELECTRICAL Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980016976

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241008

EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20161012

Assignee: Zhejiang Terence Electric Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017341

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: YUEQING XINJI PLASTIC Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017334

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: Zhejiang Jisuo electric power complete set technology Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017327

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: ZHEJIANG YATAI PLASTICS CO.,LTD.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017297

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: Zhejiang Dawei Automation Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017290

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: Zhejiang Liufang cabinet frame Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017287

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: ZHEJIANG JOTTA ELECTRIC Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017280

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: Yueqing Dingshun Electric Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017221

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014

Application publication date: 20161012

Assignee: Zhejiang Dongfang Kexin Network Co.,Ltd.

Assignor: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd.

Contract record no.: X2024980017215

Denomination of invention: A suspended self-excited wheel piezoelectric beam energy harvester

Granted publication date: 20180703

License type: Open License

Record date: 20241014