CN204258662U - Piling machine formula piezoelectric generating device - Google Patents

Abstract

The utility model relates to a pile driver type piezoelectric power generation device in the field of power generation devices, which comprises a hollow cylinder, a guide rod is fixed in the center of the hollow cylinder, and two magnetic mass blocks and a magnetic oscillation are movable on the guide rod. The magnetic oscillating block is located between two magnetic mass blocks, and the opposite ends of the magnetic oscillating block and the corresponding magnetic mass block have the same polarity; a number of cantilever beams and cantilever beams are respectively arranged between the outer end surface of the magnetic mass block and the inner wall of the hollow cylinder. The root of the beam is fixed on the inner wall of the hollow cylinder, and the other end of the cantilever beam is attached to the outer end surface of the magnetic mass block. Each cantilever beam is provided with a piezoelectric sheet connected to the power storage device; the outer periphery of the magnetic oscillation block and the inner wall of the hollow cylinder At least two springs are arranged therebetween, and the magnetic oscillating mass is suspended between the two magnetic mass masses via the springs. The utility model generates electricity through magnetic oscillation, and has the advantages of simple structure, low cost, long-lasting power generation, etc., and is suitable as a small power generation device.

Description

Pile driver type piezoelectric power generation device

technical field

The utility model relates to a power generating device, in particular to a piezoelectric power generating device.

Background technique

With the rapid development of microelectronics technology and radio technology, electronic products such as mobile phones, MP3 players, and business communication have greatly enriched and facilitated people's daily life. However, in the field of energy supply, traditional chemical batteries are still the mainstay, and problems such as frequent replacement, waste of materials, environmental pollution, and difficulty in recycling have become increasingly prominent. It is urgent to find a new energy source to replace traditional chemical batteries.

As a new type of power generation device, the piezoelectric power generation device has the characteristics of electromechanical conversion. Using the positive piezoelectric effect of piezoelectric materials, it can convert the mechanical energy of vibration in the environment into electrical energy, and has a very broad application prospect. However, before the invention of the utility model, the current cantilever beam piezoelectric power generation device is to add a mass block to the free end of the cantilever beam, relying on the vibration of the mass block to deform the piezoelectric vibrator, so that the piezoelectric sheet generates piezoelectric effect, and then piezoelectric power generation. This kind of cantilever beam piezoelectric device, because the mass block is supported by the cantilever beam, it is difficult to vibrate, even if it vibrates, the amplitude will not be very large, so that the piezoelectric power generation device has a small power generation and low energy conversion efficiency.

Utility model content

Aiming at the deficiencies mentioned above in the background technology, the utility model provides a pile driver type piezoelectric generator, which can make the vibration block not restricted by the cantilever beam, and drive multiple cantilever beam piezoelectric vibrators to deform through magnetic force, greatly It improves the piezoelectric power generation efficiency, overcomes the shortcomings of small piezoelectric power generation and low energy conversion efficiency, and has the advantages of simple structure, low cost, and long-lasting power generation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a pile driver type piezoelectric power generation device, including a hollow cylinder, the center of which is fixed with a guide rod, and two magnetic mass blocks are movable on the guide rod and a magnetic oscillating block, the magnetic oscillating block is located between two magnetic mass blocks, and the opposite ends of the magnetic oscillating block and the corresponding magnetic mass block have the same polarity; the outer end surface of the magnetic mass block and the inner wall of the hollow cylinder are respectively provided There are several cantilever beams. The root of the cantilever beam is fixed on the inner wall of the hollow cylinder. The other end of the cantilever beam is attached to the outer end surface of the magnetic mass block. Each cantilever beam is equipped with a piezoelectric sheet, and the electrode surface of each piezoelectric sheet is passed through a wire Connected to the power storage device; at least two springs are arranged between the outer periphery of the magnetic oscillating block and the inner wall of the hollow cylinder, and the magnetic oscillating block is suspended between two magnetic mass blocks through the springs.

When the utility model works, the magnetic oscillating block can receive energy generated by external vibrations or bumps, so that the magnetic oscillating block oscillates up and down along the guide rod, and the spring is used for energy storage and continuously releases energy, so that the magnetic oscillating block can last for a long time Oscillation, when the magnetic oscillating block oscillates up and down, the magnetic mass block is driven to oscillate up and down by magnetic force, causing the cantilever beam to deform, so that the piezoelectric sheet attached to it is also deformed, generating positive piezoelectric effect piezoelectric power generation, so that Electric energy is continuously generated on the piezoelectric sheet and stored in the electricity storage device. The device has a novel structure, and solves the defects of small power generation and low energy conversion efficiency of the current cantilever beam piezoelectric power generation device. This pile driver type piezoelectric power generation device can make the oscillating block not limited by the cantilever beam, and drive multiple cantilever beam piezoelectric vibrators to deform through magnetic force, which greatly improves the efficiency of piezoelectric power generation and overcomes the small piezoelectric power generation and energy conversion. The disadvantage of low efficiency has the advantages of simple structure, low cost, and long-lasting power generation. The device is suitable as a small power generation equipment, and it can be used in places prone to vibration such as cars and boats. Such as MP3 player, mobile phone, etc. power supply.

For the convenience of installation, the magnetic oscillating block is provided with lifting lugs, and the inner wall of the hollow cylinder is provided with lifting rings, and the spring is connected between the lifting lugs and the lifting rings.

As one of the improvements of the utility model, four cantilever beams are evenly arranged in the outer circumferential direction of the magnetic mass block. It is convenient for installation and arrangement.

In order to improve power generation efficiency, the piezoelectric sheet is pasted and fixed on one side or both sides near the root of the cantilever beam through a conductive adhesive layer.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure, 1 hollow cylinder, 2 magnetic oscillating blocks, 3 lifting lugs, 4 springs, 5 lifting rings, 6 guide rods, 7 magnetic mass blocks, 8 piezoelectric sheets, and 9 cantilever beams.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a structural schematic diagram of a pile driver type piezoelectric power generation device, the structure of which includes a hollow cylinder 1, a guide rod 6 is fixed in the center of the hollow cylinder 1, and two magnetic mass blocks 7 and a The magnetic oscillating mass 2, the magnetic mass 7 and the magnetic oscillating mass 2 can slide on the guide rod 6, the magnetic oscillating mass 2 is located between the two magnetic mass blocks 7, the opposite ends of the magnetic oscillating mass 2 and the corresponding magnetic mass 7 The polarity is the same, both are S poles or N poles; four cantilever beams 9 are respectively arranged between the outer end surface of the magnetic mass block 7 and the inner wall of the hollow cylinder, and the four cantilever beams 9 are uniform in the outer circumferential direction of the magnetic mass block 7 distribution; the root of the cantilever beam 9 is fixed on the inner wall of the hollow cylinder, the other end of the cantilever beam 9 is attached to the outer end surface of the magnetic mass block 7, each cantilever beam 9 is provided with a piezoelectric sheet 8, and the piezoelectric sheet 8 passes through the conductive The glue layer is pasted and fixed on the surface of one side close to the root of the cantilever beam 9; the electrode surface of each piezoelectric sheet 8 is connected to the power storage device through a wire; the outer circumference of the magnetic oscillation block 2 and the inner wall of the hollow cylinder are symmetrically arranged. Two springs 4, and more springs 4 can also be provided. Its function is to continuously store and release energy, so that the magnetic oscillating block 2 can continuously oscillate. A suspension ring 5 is provided, a spring 4 is connected between the suspension ear 3 and the suspension ring 5 , and the magnetic oscillation block 2 is suspended between two magnetic mass blocks 7 via the spring 4 .

When the utility model works, when vibrations in the external environment, such as people walking, vehicle vibration, etc., cause the magnetic oscillation block 2 to vibrate downward along the guide rod 6, a certain repulsion force will be generated on the magnetic mass block 7, forcing the magnetic mass block 7 Slide down along the guide rod 6, so that the cantilever beam 9 is deformed, and then the piezoelectric sheet 8 pasted thereon is also deformed to generate piezoelectric effect and generate piezoelectric power. When the magnetic oscillating block 2 moves down to a certain distance, it will slide upwards under the tension of the spring 4, which will generate a certain repulsion force on the magnetic mass block 7 at the upper end of the hollow cylinder 1, forcing the magnetic mass block 7 to move upward along the guide rod 6. Sliding, so that the cantilever beam 9 at the upper end is deformed, and the piezoelectric sheet 8 on it is driven to be deformed, thereby generating a piezoelectric effect and generating electricity by piezoelectricity. When the magnetic oscillating block 2 moves upward to a certain distance, it will be pulled downward by the springs 4 on both sides, thereby forcing the magnetic oscillating block 2 to slide downward again, and so on. The obtained electrical energy can be used by the load.

The utility model is not limited to the above-mentioned embodiments. For example, it is also possible to arrange multiple cantilever beams along the circumferential direction and paste multiple piezoelectric sheets on the upper and lower surfaces of the cantilever beams. On the basis of the technical solution disclosed in the utility model, Those skilled in the art can make some replacements and modifications to some of the technical features based on the disclosed technical content without creative work, and these replacements and modifications are all within the protection scope of the present utility model.

Claims (4)

1. A pile driver type piezoelectric generating device, characterized in that: it comprises a hollow cylinder, the center of the hollow cylinder is fixedly provided with a guide rod, and the guide rod is movable with two magnetic masses and a magnetic oscillation block, the magnetic The oscillating mass is located between two magnetic mass blocks, and the polarity of the opposite end of the magnetic oscillating block and the corresponding magnetic mass block is the same; a number of cantilever beams are respectively arranged between the outer end surface of the magnetic mass block and the inner wall of the hollow cylinder, and the cantilever beam The root is fixed on the inner wall of the hollow cylinder, and the other end of the cantilever beam is attached to the outer end surface of the magnetic mass block. Each cantilever beam is provided with a piezoelectric sheet, and the electrode surface of each piezoelectric sheet is connected to the power storage device through a wire; At least two springs are arranged between the outer periphery of the magnetic oscillating block and the inner wall of the hollow cylinder, and the magnetic oscillating block is suspended between the two magnetic mass blocks via the springs. 2. The pile driver type piezoelectric power generating device according to claim 1, characterized in that: the magnetic oscillating block is provided with lifting lugs, the inner wall of the hollow cylinder is provided with lifting rings, and the spring is connected to the lifting lugs and the lifting rings between. 3. The pile driver type piezoelectric generator according to claim 1 or 2, characterized in that four cantilever beams are evenly arranged in the outer circumferential direction of the magnetic mass block. 4. The pile driver type piezoelectric power generation device according to claim 1 or 2, wherein the piezoelectric sheet is pasted and fixed on one side or both sides near the root of the cantilever beam through a conductive adhesive layer.