CN202524324U

CN202524324U - Power generator based on recuperation of train vibration energy and used for charging mobile phone

Info

Publication number: CN202524324U
Application number: CN2012201270201U
Authority: CN
Inventors: 阚君武; 王淑云; 李熹平; 曾平; 程光明
Original assignee: Zhejiang Normal University CJNU
Current assignee: Zhejiang Normal University CJNU
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2012-11-07
Anticipated expiration: 2022-03-29

Abstract

The utility model relates to a power generator based on the recuperation of train vibration energy and used for charging a mobile phone, which belongs to the technical field of new energy sources and power generation. An upper cover, a casing and a base are connected through screws. A first piezoelectric vibrator is clamped between the upper cover and the casing. A second piezoelectric vibrator is clamped between the casing and the base. A ball pin sleeve is arranged on the upper cover. A ball pin is arranged in the ball pin sleeve. A screw rod is arranged on the ball pin. A first spring, an inertia block and a second spring are sequentially sheathed on the screw rod. An annular magnet is arranged on the inertia block. The free ends of the piezoelectric vibrators are provided with magnets. The magnets arranged at the end parts of the piezoelectric vibrators are arranged in a way of approaching to the similar magnetic pole of the annular magnet arranged on the inertia block. The power generator has the advantage that the low-frequency and great-amplitude vibration energy in any direction can be recuperated.

Description

Cell-phone charging based on the shock for train energy recuperation is used TRT

Technical field

The utility model belongs to new forms of energy and technical field of power generation, is specifically related to a kind of microminiature generator that reclaims vibrational energy, is used for portable micropower electronic product real time chargings such as mobile phone.

Background technology

Mobile phone has become the indispensable portable communicating tool of the modern life, and people yet need exhaust brought helpless in the face of the energy content of battery, especially on the train of long-distance travel usually when the enjoyment mobile phone brings communication facilitation.Though modern railway carriage all has the supply socket of 220V, for traffic safety, avoid the improper initiation fire of electricity consumption, do not supply power in these supply socket reality.Therefore, the long-distance passenger often receives to face the puzzlement that mobile phone does not have electricity, and portable microminiature TRT can effectively address this problem.At present; Research based on the microminiature TRT of principles such as electromagnetism, static, thermoelectricity, electric capacity, piezoelectricity, solar energy has become forward position both domestic and external focus; All kinds of miniature power generating devices all have advantage and the suitable application area of himself; That the advantage of piezoelectric generator is is simple in structure, be easy to make and implementation structure on microminiaturization and integrated etc., so the scope of application is wider, progressively be used for fields such as transducer, health monitoring and wireless transmitting system at present.

Piezoelectric generating device mainly is to be used for the vibrational energy recovery to generate electricity, and the patent application of more this respect is all arranged at present both at home and abroad.Mostly early stage piezoelectric generating device is the cantilever beam and the circular piezoelectric oscillator of monomer; For increasing TRT effective band width or realizing the collection of energy of different direction of vibration; The TRT that a plurality of piezoelectric vibrators constitute has appearred at present; As: Chinese patent 200810106046.6 proposes the broadband piezoelectric generator that a kind of different length cantilever beam piezoelectric vibrators constitutes; Chinese invention patent 201010601354.3 proposes the dandelion formula generator that a kind of a plurality of cantilever beam piezoelectric vibrators constitutes, and can realize " vibrational energy of an extensional vibration and a horizontal direction reclaims ", or the like.But the unicity of direction because the flexure type piezoelectric vibrator can deform; The method of a plurality of piezoelectric vibrator combinations of above-mentioned employing only can realize that also the vibrational energy of one or two direction reclaims; The adaptability of vibration environment is relatively poor, has seriously restricted applying of piezo-electric generating technology.

As everyone knows; Its compartment received multiple vibration source excitation during train was advanced; Be connected the extensional vibration that causes, the porpoise that velocity variations causes, sideshake that bend causes or the like like rail; And there is interactional coupling effect in above-mentioned vibration source, so the multidirectional that becomes when having of railway carriage vibration, and the vibration generating device that utilizes the existing single degree of freedom or two degrees of freedom is recuperated energy effectively.

Summary of the invention

The utility model provides a kind of cell-phone charging based on the shock for train energy recuperation to use TRT, and drawbacks such as the existing oscillatory type piezoelectric generating device degree of freedom is single to solve, direction of vibration bad adaptability can be used for cell-phone charging in the long-distance travel.

The technical scheme that the utility model is taked is: connect through screw between loam cake, housing and base; Clamping has piezoelectric vibrator one between said loam cake and housing, and clamping has piezoelectric vibrator two between said housing and base, covers on described the ball guide is housed; In the said ball guide ball pin is housed; On the ball pin screw rod is installed, is set with spring one, inertial mass and spring two on the screw rod successively, on the said inertial mass annular magnet is installed; Said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms; The free end of piezoelectric vibrator is equipped with magnet, and the magnet of said piezoelectric vibrator end and the like pole of the annular magnet on the inertial mass are near installation, and the metal substrate of said piezoelectric vibrator is connected with control circuit through lead with piezoelectric chip.

In the utility model, the ball pin can be made any direction in the ball guide swing, inertial mass drive annular magnet and can slide along screw rod.Under nature, inertial mass is in the equilbrium position under the effect of repulsive force between spring force and the magnet, is in relative static conditions between the magnet of piezoelectric vibrator end and the annular magnet on the inertial mass; When TRT is vibrated by extraneous arbitrary direction; The position of the magnet on inertial mass and the inertial mass changes; Cause between magnet and the magnet on the inertial mass on the piezoelectric vibrator distance and repulsive force change; Thereby the piezoelectric vibrator stress is changed and produce flexural deformation, convert mechanical energy to electric energy.

The advantage of the utility model is: utilize the ball pin to drive the slidably method excitation cantilever arm beam piezoelectric vibrator of magnet, can realize that the vibrational energy of any direction, low frequency and large amplitude reclaims.

Description of drawings

Fig. 1 is that TRT is in the structural profile sketch map under the nature inactive state in preferred embodiment of the utility model;

Fig. 2 is the A-A generalized section of Fig. 1;

Fig. 3 is the structural representation of metal substrate in preferred embodiment of the utility model;

Fig. 4 is the structural profile sketch map during the TRT up-down vibration in preferred embodiment of the utility model;

Fig. 5 is the structural profile sketch map when the TRT horizontal direction is vibrated in preferred embodiment of the utility model.

Embodiment

Like Fig. 1, Fig. 2, shown in Figure 3, clamping has piezoelectric vibrator 1 between said loam cake 1 and housing 8 through the screw connection for loam cake 1, housing 8 and 14 of bases, and clamping has piezoelectric vibrator 29 between said housing 8 and base 14; On described loam cake 1, ball guide 2 is housed, in the said ball guide 2 ball pin 3 is housed, screw rod 4 is installed on the ball pin 3, spring 1, inertial mass 12 and spring 2 11 are housed on the screw rod 4 successively; On the said inertial mass 12 annular magnet 13 is installed; Said piezoelectric vibrator 1 is by cantilever beam 7-1-1 on the metal substrate 7-1 and piezoelectric chip 7-2 and wafer 7-3 is bonding forms, and said piezoelectric chip 7-2 is connected through lead 15 with piezoelectric chip 7-3; Said piezoelectric vibrator 9 is by cantilever beam 9-1-1 on the metal substrate 9-1 and piezoelectric chip 9-2 and wafer 9-3 is bonding forms, and said piezoelectric chip 9-2 is connected through lead 16 with piezoelectric chip 9-3; The free end of said piezoelectric vibrator 1 is equipped with magnet 1, and the free end of piezoelectric vibrator 29 is equipped with magnet 2 10, and the like pole of said magnet 1, magnet 2 10 and annular magnet 13 is near installation; Said piezoelectric vibrator 1 is connected with control circuit 19 with power conversion with lead group 18 through lead group 17 respectively with piezoelectric vibrator 29; This power conversion and control circuit 19 are present prior art.

In the utility model, ball pin 3 can be made any direction in ball guide 2 swing, inertial mass 12 and annular magnet 13 can slide along screw rod 4.Under nature, be in the equilbrium position under the effect of repulsive force between inertial mass 12, spring 2 11 and the magnet, be in relative static conditions between magnet 1, magnet 2 10 and the annular magnet 13; When TRT is vibrated by extraneous arbitrary direction; The position of inertial mass 12 and annular magnet 13 changes; Distance and repulsive force between annular magnet 13 and magnet 6 one and the magnet 2 10 change; Thereby the piezoelectric vibrator stress is changed and produce flexural deformation, convert mechanical energy to electric energy; The electric energy that is generated promptly can be used for collecting charging after the conversion process of control circuit 19.

As shown in Figure 4, when TRT was done simple vibration up and down reciprocatingly, piezoelectric vibrator 1 and piezoelectric vibrator 29 were because of receiving the inertia force effect up-down vibration of free end magnet 1 and magnet 2 10; Meanwhile; Inertial mass 12 and annular magnet 13 also slide up and down along screw rod 4; Spring 1 compression, spring 2 11 elongations cause that distance and mutual repulsive force change between annular magnet 13 and magnet 1 and the magnet 2 10, and then aggravate the Oscillation Amplitude of piezoelectric vibrator.

As shown in Figure 5; When TRT is made the double vibrations of any horizontal direction; Inertial mass 12, annular magnet 13 will drive ball pin 3 through screw rod 4 and rotate; Thereby annular magnet 13 and distance and the mutual repulsive force between the magnet of piezoelectric vibrator end on the inertial mass 12 are changed: in Fig. 5; Distance between annular magnet 13 and magnet 1 and the magnet two

Figure 2012201270201100002DEST_PATH_IMAGE002

reduces, repulsive force increases, and causes that piezoelectric vibrator 1 is bent upwards, piezoelectric vibrator

two downwarpings; Simultaneously; Distance between annular magnet 13 and magnet one and the magnet 2 10 increases, repulsive force reduces, piezoelectric vibrator one

and piezoelectric vibrator 29 under the effect of himself elastic force respectively downwards and be bent upwards.

Claims

1. the cell-phone charging based on the shock for train energy recuperation is used TRT, it is characterized in that: connect through screw between loam cake, housing and base, clamping has piezoelectric vibrator one between said loam cake and housing; Clamping has piezoelectric vibrator two between said housing and base; Cover on described the ball guide is housed, in the said ball guide ball pin is housed, on the ball pin screw rod is installed; Be set with spring one, inertial mass and spring two on the screw rod successively; On the said inertial mass annular magnet is installed, said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and the free end of piezoelectric vibrator is equipped with magnet; The magnet of said piezoelectric vibrator end and the like pole of the annular magnet on the inertial mass are near installation, and the metal substrate of said piezoelectric vibrator is connected with control circuit through lead with piezoelectric chip.