CN103670983B - A kind of vehicle vibration power generation device - Google Patents
A kind of vehicle vibration power generation device Download PDFInfo
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- CN103670983B CN103670983B CN201310665243.2A CN201310665243A CN103670983B CN 103670983 B CN103670983 B CN 103670983B CN 201310665243 A CN201310665243 A CN 201310665243A CN 103670983 B CN103670983 B CN 103670983B
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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
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention is a kind of vehicle vibration power generation device, this device adopts overhang and ratchet to be pick-up mechanism, unilateral bearing and gear train are vibration mechanical energy transfer mechanism, DC permanent magnetic generator is energy converting between mechanical mechanism, electric energy processing circuit with USB interface processes erratic AC energy, is embodied as vehicle electronic device and powers.Overhang and ratchet mechanism are used for pick-up by the present invention, the straight line motion of the vertical direction in vehicle operating is converted to rotary motion, the work of low resistance mag-dynamo is driven again by high efficiency ratchet mechanism, compare common linear type vibration generating device, transmission and the conversion efficiency of vibration mechanical energy can be significantly improved.The present invention is renewable energy power generation, and pick-up efficiency, energy transfer and conversion efficiency are high, long working life, adopts USB interface to be applicable to most vehicle electronic device and uses, highly versatile.
Description
Technical field
The present invention relates to the technology mechanical energy of Vehicular vibration being converted to electric energy, in particular to the one-way driving mechanism of overhang and ratchet-type pick-up mechanism, unilateral bearing and gear train, DC permanent magnetic generator, electric energy processing circuit unit and its implementation, specifically adopt overhang, load, arc-shaped rack, ratchet, unilateral bearing, gear train, DC permanent magnetic generator, the electric energy processing circuit of band USB interface, magnetic, shell, the vibration mechanical energy realized in being travelled by vehicle is converted to the device of electric energy.
Background technique
Vehicle is day by day universal in life and production, the application of relevant portable electric appts is also increasing, as: the hand-held electronic equipment etc. of automatic navigator, drive recorder, driver and passenger, these electronic equipments mainly rely on vehicle power or built-in battery to provide electric power, and this power supply mode exists shortcomings:
1. adopt vehicle power to power to need to export electric energy by automobile current generator, can increase vehicle oil consumption, in today of oil price height enterprise, obvious Economy is not high, and adds environmental pollution.
2. adopt battery powered portable electric appts short for cruising time, need to carry charging equipment, and the use of battery exists pollution equally.
3. a lot of vehicle mounted portable electronic equipment is that USB power source is powered, and be required to be former vehicle power ABAP Adapter transducer, the cigarette lighter power of 12V is converted to USB power source, and secondary power supply efficiency is low, and cost is high.
4. it is clean and tidy and attractive in appearance that mixed and disorderly power line affects in car.
Obvious vibration is had when vehicle travels on road, abundant vibration mechanical energy is there is in relevant electronic device works environment, vibration mechanical energy during vehicle can travel by vehicle vibration power generation device is converted to an electric energy, solves the powerup issue of these electronic equipments.
Summary of the invention
The object of the invention is the deficiency for portable electric appts power supply technique in current vehicle, a kind of device utilizing Vehicular vibration to generate electricity is provided.This device adopts overhang and ratchet to be pick-up mechanism, unilateral bearing and gear train are vibration mechanical energy transfer mechanism, DC permanent magnetic generator is energy converting between mechanical mechanism, and the electric energy processing circuit of band USB interface processes erratic AC energy, is embodied as vehicle electronic device and powers.Overhang and ratchet mechanism are used for pick-up by the present invention, the straight line motion of the vertical direction in vehicle operating is converted to rotary motion, the work of low resistance mag-dynamo is driven again by high efficiency ratchet mechanism, compare common linear type vibration generating device, transmission and the conversion efficiency of vibration mechanical energy can be significantly improved.The present invention is renewable energy power generation, and pick-up efficiency, energy transfer and conversion efficiency are high, long working life, adopts USB interface to be applicable to most vehicle electronic device and uses, highly versatile.
Technological scheme of the present invention is:
A kind of vehicle vibration power generation device, this device is housing structure, and profile is cube; In casing, top and bottom are fixed with 1 magnetic respectively; DC permanent magnetic generator, axle one, axle two are all fixed by screws on the inwall of the same base plate of casing, and wherein, the level height of DC permanent magnetic generator, axle one, axle two is identical or close; Gear three is fixed on the axle of DC permanent magnetic generator by interference fit, gear two is fixed on the bearing of axle two by interference fit, and gear one and ratchet are fixed on by interference fit on the unilateral bearing of axle one, wherein, gear one riveted joint is fixed on ratchet, coaxial rotation; Meanwhile, gear three and gear two are interlocked, and gear two and gear one are interlocked; Arc-shaped rack and load are fixed on the movable end of overhang, and the fixed end of overhang is fixed on casing left sideboard inwall; The fixed end of overhang and axle one are in same level, and overhang is identical with the distance of ratchet distance box bottom; Electric energy processing circuit with USB interface is fixed on box wall, is connected with the staor winding of DC permanent magnetic generator by wire.
Described overhang is rectangular tab, and the fixed end of overhang is fixed on the inwall of casing left sideboard, and load and arc-shaped rack are fixed by screws in the movable end of overhang; Arc-shaped rack and ratchet have identical modulus and pressure angle.
Described gear two is compound gear, and composition comprises: the spur gear of gear two, the umbrella gear of gear two and gear two mesopore, and the spur gear of gear two is below the umbrella gear of gear two, and gear two forms for cast inblock; Gear three is umbrella gear, together with the bevel gearing of gear two, the standard pitch diameter of gear three is less than the standard pitch diameter of the umbrella gear of gear two, and spur gear and the spur gear gear one of gear two are interlocked, and the spur gear standard pitch diameter of gear two is less than the standard pitch diameter of gear one.
The composition of the electric energy processing circuit of described band USB interface comprises capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface, its annexation is capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface successively cascade form, capacitor filter two ends are the input end of the electric energy processing circuit of band USB interface, and be connected with staor winding, USB interface externally exports electric energy.
The present invention is based on overhang and ratchet pick-up mechanism, gear mechanism energy transfer mechanism, the energy converting between mechanical mechanism of DC permanent magnetic generator, the electric energy processing circuit of band USB interface be vehicle mounted portable power electronic equipment, vibration mechanical energy in being travelled by vehicle is converted to electric energy, electric energy is after electric energy process, electrical power storage, electric energy conversion, realizing stable direct current to export, is vehicle mounted portable power electronic equipment.
The present invention adopts the pick-up mechanism pick-up efficiency of overhang and ratchet structure higher; Gear mechanism energy transfer mechanism energy transfer efficiency is high; DC permanent magnetic generator has higher electromechanical conversion efficiency, and have the advantage that starting torque is low, detent force is less, dynamic characteristic is good; Electric energy processing circuit adopts Micro Energy Lose design, and oneself power consumption is low, and adopt USB interface design, versatility is good; Adopt magnetic means of fixation to be adsorbed in car easily, also can directly vertically be placed in car, easy to use.There is advantage as follows:
1) reduce vehicle mounted portable electronic equipment to the dependence of vehicle power, reduce oil consumption, environmental protection.
2) not needing from cigarette lighter is that many power lines drawn by vehicle mounted portable electronic equipment, keeps the clean and tidy and attractive in appearance of environment inside car.
3) because Vehicular vibration is renewable energy sources, the present invention can be vehicle mounted portable power electronic equipment for a long time, longevity of service.
4) adopt USB interface design, versatility is good, and avoid the two times transfer of power supply, power supply efficiency is high.
Accompanying drawing explanation
Fig. 1 is a kind of structural front view of vehicle vibration power generation device.
Wherein, 1-casing, magnetic under 2-, 3-is with the electric energy processing circuit of USB interface, 4-gear three, 5-DC permanent magnetic generator, 6-gear two, 7-axle two, 8-ratchet, 9-gear one, 10-axle one, 11-arc-shaped rack, 12-load, 13-overhang, the upper magnetic of 14-.
Fig. 2 is the structural drawing of casing.Wherein, 21-lower side panel, 22-right sideboard, 23-base plate, 24-epipleural, 25-left sideboard.
Fig. 3 is the structural drawing of gear two.Wherein, the spur gear of 31-gear two, the umbrella gear of 32-gear two, 33-gear two mesopore.
Fig. 4 is the electric energy processing circuit figure of band USB interface.
Fig. 5 is a kind of operation schematic diagram of vehicle vibration power generation device.
Embodiment
The present invention with overhang and ratchet for pick-up device, with unilateral bearing and gear train for energy transmission device, take DC permanent magnetic generator as electromechanical energy conversion device, to be with the electric energy processing circuit of USB port for electric energy treatment device, this vehicle vibration power generation device generally comprises: shell, overhang, load, ratchet, unilateral bearing, gear train, DC permanent magnetic generator, electric energy processing circuit (comprising: eliminator, super capacitor energy-storage circuit, DC-DC power module, USB interface).
Effect of vibration during vehicle travels is on the shell of vehicle vibration power generation device, the vibration of shell makes overhang swing up and down, arc-shaped rack is driven to swing up and down when overhang swings, when arc-shaped rack is to lower swing, promotion ratchet is rotated counterclockwise, when arc-shaped rack upwards swings, due to the restriction of axle one unilateral bearing, ratchet is motionless, final ratchet can only unidirectionally be rotated counterclockwise, ratchet and gear one are fixed together, gear one and ratchet synchronously rotate counterclockwise, the spur gear of the gear two be engaged with it is driven to rotate clockwise when gear one rotates counterclockwise, the umbrella gear of gear two and the spur gear of gear two synchronously rotate clockwise, the gear three be engaged with it is driven to rotate counterclockwise when the umbrella gear of gear two rotates clockwise, rotor and the gear three of DC permanent magnetic generator are all fixed on the axle of DC permanent magnetic generator, the rotor synchronous axial system of DC permanent magnetic generator is driven when gear three rotates, due to electromagnetic induction, unstable direct current is produced in the staor winding of DC permanent magnetic generator, the process of the electric energy processing circuit of this direct current band USB port, by the 5V direct current of USB port stable output.
Below in conjunction with accompanying drawing, the present invention will be described, but they do not impose any restrictions the present invention.
Embodiment 1
As shown in Figure 1, this device is housing structure to the structural drawing of this vehicle vibration power generation device, and profile is cube; In casing, top and bottom are fixed with magnetic 2 and magnetic 14 respectively; DC permanent magnetic generator 5, axle 1, axle 27 are all fixed by screws on the inwall of same box bottom 23, and wherein, the level height of DC permanent magnetic generator 5, axle 1, axle 27 is identical or close; Gear 34 is fixed on the axle of DC permanent magnetic generator 5 by interference fit, gear 26 is fixed on the bearing of axle 27 by interference fit, and gear 1 and ratchet 8 are fixed on by interference fit on the unilateral bearing of axle 1, wherein, gear 1 riveted joint is fixed on ratchet 8, coaxial rotation; Meanwhile, gear 34 and gear 26 are interlocked, and gear 26 and gear 1 are interlocked; Arc-shaped rack 11 and load 12 are fixed on the movable end of overhang 13, and the fixed end of overhang 13 is fixed on casing left sideboard inwall; The fixed end of overhang 13 and axle 1 are in same level, and overhang 13 is identical apart from the distance of box bottom 23 with ratchet 8.When Vehicular vibration, overhang 13 drives arc-shaped rack 11 to swing up and down.
As shown in Figure 2, the composition of casing comprises lower side panel 21, right sideboard 22, base plate 23, epipleural 24, left sideboard 25 to described casing, and magnetic 2,14 is separately fixed at the lower side panel 21 of casing 1, the inwall of epipleural 24, and casing 1 realizes totally-enclosed by end cap fastening.
Described overhang 13 is rectangular tab, and the fixed end of overhang 13 is fixed on the inwall of casing left sideboard 25, and load 12 and arc-shaped rack 11 are fixed by screws in the movable end of overhang 13.Arc-shaped rack 11 and ratchet 8 have identical modulus and pressure angle.
Described gear two as shown in Figure 3, gear 26 is compound gear, composition comprises: the spur gear 31 of gear two, the umbrella gear 32 of gear two and gear two mesopore 33, and the spur gear 31 of gear two is below the umbrella gear 32 of gear two, and gear 26 forms for cast inblock; Gear 34 is umbrella gear, be interlocked with the umbrella gear 42 of gear 26, the standard pitch diameter of gear 34 is less than the standard pitch diameter of the umbrella gear 32 of gear 26, spur gear 31 and the spur gear gear 1 of gear two are interlocked, and spur gear 31 standard pitch diameter of gear two is less than the standard pitch diameter of gear 1.
The electric energy processing circuit 3 of described band USB interface is fixed on box wall, is connected by the staor winding of wire with DC permanent magnetic generator 5.
The electric energy processing circuit of described band USB interface as shown in Figure 4.Circuit is positioned at box inside, the composition of electric energy processing circuit comprises capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface, its annexation is capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface successively cascade form, capacitor filter two ends are the input end of the electric energy processing circuit of band USB interface, and be connected with staor winding, USB interface externally exports electric energy.
Wherein, the induction current (unstable direct current) of the staor winding of DC permanent magnetic generator 5 is transferred to electric energy processing circuit 3 by input end Vin, two wires of input end Vin respectively node described in connected node E, D(literary composition are wire tie point, if connected by wire between multiple tie point, then these tie points adopt same node serial number).
Capacitor filter is made up of electric capacity C1, and electric capacity C1 two ends meet node E and node D respectively.
The composition of super capacitor energy-storage circuit comprises: anti-reverse charging diode D1, super capacitor C2, super capacitor C3, super capacitor C4.Super capacitor C2, C3, C4 connect successively, store electrical energy.The positive and negative electrode of anti-reverse charging diode D1 meets node E, F respectively, prevents super capacitor C2, C3, C4 from leaking electricity to input end.
Electric energy voltage stabilizing within the scope of certain voltage can export by DC-DC power module, and DC-DC power module input terminated nodes F, D, export termination USB interface.
The concrete materials and devices that the present embodiment adopts is:
The aluminum alloy plate materials that shell is 3mm by thickness is made, and adopts buckle to be connected between end cap with casing, the long 160mm of end cap, wide 110mm, the long 160mm of casing, wide 110mm, high 30mm;
Magnetic selects the circular magnetic of rich Buddhist nun's board, diameter 36mm, height 8mm;
DC permanent magnetic generator is 130 major axis carbon brush electric motors, length 25mm, thickness 20mm, height 15mm, and motor diameter of axle 2mm, goes out shaft length: front end 19mm, rear end 9mm, and operating voltage is 1.5V-12VDC, adopts M2 screw to be fixed on bottom half.
Gear one, gear two, gear three, ratchet, arc-shaped rack, load material are PVDF.
Gear one is spur gear, and its parameter is: the number of teeth 24, modulus 6, thickness 5mm, aperture 6mm.
Gear two is the compound gear of spur gear and umbrella gear composition, and the spur gear parameter of gear two is: the number of teeth 12, modulus 6, thickness 5mm, aperture 5mm, and the umbrella gear parameter of gear two is: the number of teeth 18, modulus 6, thickness 8mm, aperture 5mm.
Gear three is umbrella gear, and its parameter is: the number of teeth 6, modulus 4, thickness 8mm, aperture 2mm.
The stationary axle material of axle one, axle two is stainless steel, and the stationary axle diameter of axle one is 3mm, length 10mm, and the stationary axle diameter of axle two is 2mm, length 10mm; Axle one is unilateral bearing, and model is HF0306, internal diameter 3mm, external diameter 6.5mm, height 6mm; The bearing designation of axle two is NMB board, bearing bore diameter 2mm, external diameter 5mm, height 2.5mm; Bearing is fixed on stationary axle by interference fit.The composition of described axle one, axle two, axle three comprises stationary axle and bearing, and the position of axle is according to gear size reasonable layout.
Ratchet adopts triangle profile of tooth, and relevant parameter is: the number of teeth 24, tooth depth 2mm, teeth groove angle 60 °, modulus are 2, tip circle external diameter is 48mm, interior circular diameter is 6mm, thickness 3mm.Ratchet and gear one are riveted together, and are fixed on the unilateral bearing of axle one by interference fit.
Arc-shaped rack adopts triangle profile of tooth, and relevant parameter is: the number of teeth 8, tooth depth 2mm, teeth groove angle 60 °, modulus 2, thickness 5mm, internal diameter 60mm.
Overhang is made up of spring steel, and overhang is of a size of long 25mm, wide 10mm, thickness 2mm.
Load is of a size of long 15mm, wide 15mm, thickness 10mm.
Electric energy processing circuit element used is as follows: filter capacitor C1 is 470 μ F electrochemical capacitors; Diode D1 model is IN4001; Super capacitor C2, C3, C4 are 2F super capacitor, and DC-DC power module model is LM2596S-ADJ, and USB interface is A type mouth;
A kind of vehicle vibration power generation device runs schematic diagram as shown in Figure 5.Vehicular vibration acts on electricity generating device casing, casing drives the overhang being fixed on casing left sideboard inwall to swing up and down around overhang fixed end, overhang drives arc-shaped rack to swing up and down, when arc-shaped rack swings up and down, due to the restriction of the unilateral bearing of axle one, unidirectional rotating counterclockwise done by ratchet, ratchet drives gear one coaxial rotation be fixed together with it, gear one drives the spur gear of the gear two be engaged with it to rotate, the umbrella gear of gear two and the spur gear coaxial rotation of gear two, the umbrella gear gear three be engaged with it is driven to rotate, gear three is fixed on DC permanent magnetic generator axle, the rotor turns of DC permanent magnetic generator is driven when gear three rotates, due to electromagnetic induction, the staor winding of DC permanent magnetic generator exports unstable direct current, the electric energy processing circuit of the output terminal access band USB port of staor winding, it is the charging of super capacitor energy-storage circuit after capacitor filtering, DC-DC power module is connect after super capacitor energy-storage circuit, after further voltage stabilizing process, 5V direct current of voltage regulation is exported by USB port.
Vehicle vibrates obviously under steam, has abundant vibration mechanical energy resource, and the Vehicular vibration mechanical energy of instability can be converted to the stable electric energy exported by this vehicle vibration power generation device.Vehicle electronic device is increasing, and needs vehicle-mounted 12V DC electrical source to be converted to 5V direct current supply more.This vehicle vibration power generation device directly can pass through USB port stable output 5V direct current, and can be placed near electronic equipment or directly embed in electronic equipment is its power supply, decreases the supply load of vehicle, avoids circumscripted power line to affect the attractive in appearance of environment inside car.
This electricity generating device adopts DC permanent magnetic generator steady in a long-termly to run, overhang and ratchet pick-up mechanism have higher mechanical energy transmission efficiency, the nylon gear adopted has self-lubricating property, entire system has very high reliability, general USB interface is adopted to power, highly versatile, directly can be placed near vehicle electronic device or be placed in its inside, easy to use.
Unaccomplished matter of the present invention is known technology.
Claims (2)
1. a vehicle vibration power generation device, it is characterized by this device is housing structure, and profile is cube; In casing, top and bottom are fixed with 1 magnetic respectively; DC permanent magnetic generator, axle one, axle two are all fixed by screws on the inwall of the same base plate of casing, and wherein, the level height of DC permanent magnetic generator, axle one, axle two is identical or close; Gear three is fixed on the axle of DC permanent magnetic generator by interference fit, gear two is fixed on the bearing of axle two by interference fit, and gear one and ratchet are fixed on by interference fit on the unilateral bearing of axle one, wherein, gear one riveted joint is fixed on ratchet, coaxial rotation; Meanwhile, gear three and gear two are interlocked, and gear two and gear one are interlocked; Arc-shaped rack and load are fixed on the movable end of overhang, and the fixed end of overhang is fixed on casing left sideboard inwall; The fixed end of overhang and axle one are in same level, and overhang is identical with the distance of ratchet distance box bottom; Electric energy processing circuit with USB interface is fixed on box wall, is connected with the staor winding of DC permanent magnetic generator by wire;
Described overhang is rectangular tab, and the fixed end of overhang is fixed on the inwall of casing left sideboard, and load and arc-shaped rack are fixed by screws in the movable end of overhang; Arc-shaped rack and ratchet have identical modulus and pressure angle;
Described gear two is compound gear, and composition comprises: the spur gear of gear two, the umbrella gear of gear two and gear two mesopore, and the spur gear of gear two is below the umbrella gear of gear two, and gear two forms for cast inblock; Gear three is umbrella gear, together with the bevel gearing of gear two, the standard pitch diameter of gear three is less than the standard pitch diameter of the umbrella gear of gear two, and spur gear and the spur gear gear one of gear two are interlocked, and the spur gear standard pitch diameter of gear two is less than the standard pitch diameter of gear one.
2. vehicle vibration power generation device as claimed in claim 1, the composition that it is characterized by the electric energy processing circuit of described band USB interface comprises capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface, its annexation is capacitor filter, super capacitor energy-storage circuit, DC-DC power module, USB interface successively cascade form, capacitor filter two ends are the input end of the electric energy processing circuit of band USB interface, and be connected with staor winding, USB interface externally exports electric energy.
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| CN201310665243.2A CN103670983B (en) | 2013-12-09 | 2013-12-09 | A kind of vehicle vibration power generation device |
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| CN201310665243.2A CN103670983B (en) | 2013-12-09 | 2013-12-09 | A kind of vehicle vibration power generation device |
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| CN109474123B (en) * | 2018-12-21 | 2023-09-01 | 西南交通大学 | Rolling type multi-direction road energy collection mechanism |
| CN114526206B (en) * | 2022-04-22 | 2022-08-09 | 西南交通大学 | Oscillating type power generation device based on seismic energy and power generation method thereof |
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| CN87106130A (en) * | 1987-09-02 | 1988-08-03 | 刘春雨 | Vibration energy conversion device |
| CN2853475Y (en) * | 2005-11-17 | 2007-01-03 | 哈尔滨工业大学 | Energy feedback type electromagnetic damping device for active and semiactive suspension |
| CN201027600Y (en) * | 2007-03-12 | 2008-02-27 | 万小星 | Vibration-reducing power generating apparatus |
| CN102052273A (en) * | 2010-12-17 | 2011-05-11 | 谢龙汉 | Device capable of capturing kinetic energy spontaneously and converting kinetic energy into electric energy |
| CN203584700U (en) * | 2013-12-09 | 2014-05-07 | 河北工业大学 | Vehicle vibration power generating device |
-
2013
- 2013-12-09 CN CN201310665243.2A patent/CN103670983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87106130A (en) * | 1987-09-02 | 1988-08-03 | 刘春雨 | Vibration energy conversion device |
| CN2853475Y (en) * | 2005-11-17 | 2007-01-03 | 哈尔滨工业大学 | Energy feedback type electromagnetic damping device for active and semiactive suspension |
| CN201027600Y (en) * | 2007-03-12 | 2008-02-27 | 万小星 | Vibration-reducing power generating apparatus |
| CN102052273A (en) * | 2010-12-17 | 2011-05-11 | 谢龙汉 | Device capable of capturing kinetic energy spontaneously and converting kinetic energy into electric energy |
| CN203584700U (en) * | 2013-12-09 | 2014-05-07 | 河北工业大学 | Vehicle vibration power generating device |
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