TWI504806B - High efficiency sound panel and its energy storage system - Google Patents

Description

High-efficiency sound power generation board and its energy storage system

The present invention relates to the technical field of generating and storing electrical energy, in particular, a sound power generation board that converts acoustic energy into electrical energy and an energy storage system using the same.

As petrochemical energy is declining, various renewable (green) energy sources have become important alternative energy sources. Renewable energy sources include solar energy, thermal energy, wind energy, biomass energy, tidal energy, and vibrational energy, which often need to be converted into electrical energy to provide a wider range of applications. Among various green energy technologies, although technologies such as solar energy and wind power generation are mainly developed, the recycling and recycling of waste energy is also a technology worth developing.

In recent years, the discussion and development of acoustic energy conversion electric energy has become increasingly popular, and acoustic energy generation is mainly achieved by a combination of acoustic energy collection devices and power generation devices. Among them, the power generation device includes three types: piezoelectric type, electromagnetic type and electrostatic type.

Taiwan Patent No. 201112780 discloses a sonic generator and a manufacturing method thereof. The technical system of the patent first needs to measure the frequency of the sound wave of the sound source, and then design the phononic crystal and the phononic crystal resonant cavity according to the acoustic frequency, and in the phononic crystal resonant cavity. A piezoelectric material is disposed inside to form a sonic generator. It can be seen from the description of the patent that when the frequency of the acoustic wave changes, the phononic crystal and the phononic crystal resonant cavity also need to be changed correspondingly, which is inconvenient in use, and thus the patent design is not versatile. Second, the patent does not disclose energy storage design.

Taiwan Patent No. 200714492 discloses a system method for obtaining electric energy from the sound energy of a rotating tire, which is provided with an acoustic electric converter in the vicinity of the rotating tire, thereby converting the sound energy generated by the rotation of the tire into electric energy. The above-mentioned acoustic-electric converter drives a magnet with a diaphragm so that the magnet can be displaced relative to a coil to generate an induced current. In addition, the obtained electric energy can be stored or supplied to the electronic components on the vehicle through the rectifying circuit and the stabilizing circuit. In the above-mentioned power generation structure, the vibration force of the sound wave generated by the rotation of the tire is not large, so it is quite difficult to deform the film by the sound wave and drive the magnet to reciprocate.

Chinese patent CN101776050 discloses a noise generating device which is composed of a Helmholtz resonator and a resonant generator. The Helmholtz resonator has a resonant cavity that amplifies the acoustic wave, and then pushes a combination of a vibrating membrane and a generator vibrator with the amplified acoustic wave, thereby enabling the generator to generate current. Although the patent can achieve the purpose of power generation, it does not disclose how the tiny electrical energy generated by the generator should be stored.

One of the objects of the present invention is to provide a high-efficiency sound power generating panel which is capable of efficiently generating an induced current.

Another object of the present invention is to provide a high-efficiency sound power generation board energy storage system capable of efficiently storing minute and unstable currents generated by sound wave power generation.

In order to achieve the above object and effect, the sound power generation board of the present invention is provided with an electromagnetic power generation assembly between a first fixed plate and a second fixed plate. Further, the electromagnetic power generation assembly includes a movable carrier plate disposed between the two fixed plates, and the one or more first stators and the one or more second stators are respectively disposed on the first fixed plate and the second fixed plate One or more first movers and one or more second movers are respectively disposed on the movable carrier plate and corresponding to the first stator and the second stator; and the movable carrier plate and the first fixed plate are further A spring group is disposed between the second fixed plates. When the sound source passes through the inlet of the first fixing plate and drives the movable carrier to generate displacement, each mover can be displaced relative to each stator to generate an induced current.

A combination of a further rectifier circuit and an energy storage device is electrically connected to the sound power generation board. The energy storage device comprises a capacitor group, an external circuit and an energy storage integrated circuit, so that the tiny and unstable current generated by the power generation board can be efficiently used by the micro energy collection means of the energy storage device. Store.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a description of the preferred embodiments of the present invention in accordance with the purpose of the invention.

Referring to FIG. 1, a sound wave 10 is transmitted to a sound power generating panel 30 via a sound collector 20. Thereby using the sound power generation board 30 for sound energy conversion can. The sound collector 20 can be made into a flared shape, and has an output port 22 at one end thereof, and the output outlet 22 corresponds to the sound power generating plate 30.

Referring to FIGS. 1 and 4 , the sound power generating panel 30 includes a first fixing plate 32 and a second fixing plate 34 . The first fixing plate 32 and the second fixing plate 34 are opposed to each other, and the first fixing plate 32 has an inlet 36 penetrating through the structure. This inlet 36 corresponds to the output port 22 of the sound collector 20 (see Fig. 1).

An electromagnetic power generation assembly 38 is disposed between the first fixed plate 32 and the second fixed plate 34. Furthermore, the electromagnetic power generation assembly 38 includes a movable carrier 40, one or more first stators 42, one or more second stators 44, and the first stator 42 and the second stator 44, and the like. The number of first movers 46 and second movers 48.

The first stator 42 and the second stator 44 described above are magnets. The first mover 46 and the second mover 48 are coils. Secondly, the number of the first stator 42, the second stator 44, the first mover 46 and the second mover 48 shown in the figure is two; however, the figure is only for illustrative purposes, and is not intended to limit the stator and motion. The number of children.

The first stator 42 is fixed to the first fixing plate 32. The second stator 44 is fixed to the second fixing plate 34. The movable carrier 40 is disposed between the first fixed plate 32 and the second fixed plate 34. The first mover 46 and the second mover 48 are disposed on both side surfaces of the movable carrier 40 and respectively correspond to the first stator 42 and the second stator 44.

Yet another spring set 50 can include an appropriate number of springs 52. These springs 52 may be disposed between the movable carrier plate 40 and the first fixed plate 32, respectively, and between the movable carrier plate 40 and the second fixed plate 34.

The above-mentioned movable carrier 40 can be selected from a light-weight and high-absorbing plate, such as a pearl plate.

The acoustic wave 10 can be concentrated and amplified by the sound collector 20. When the acoustic wave 10 enters the sound power generating panel 30 through the inlet 36, the movable carrier 40 can be displaced by the action of the acoustic wave 10, at which time the springs 52 are deformed. In this way, the movable carrier 40, the first mover 46 and the second mover 48 can be combined with the springs 52 to generate a reciprocating displacement.

The process of reciprocating displacement of the first mover 46 and the second mover 48 may respectively form a relative displacement corresponding to the first stator 42 and the second stator 44, such that the first mover 46 and the second mover 48 may be cut by magnetic lines of force. Generates an induced current.

As apparent from the above description, the combination of the sound power generation panel 30 and the sound collector 20 disclosed in the present invention can effectively use the sound wave 10 to generate an induced current to achieve the effect of the acoustic energy conversion power source. Secondly, the combination of the movable carrier 40, the first mover 46 and the second mover 48 has a small mass, so that the force of the acoustic wave 10 is sufficient to effectively drive the movable carrier 40 to achieve the effect of real power generation.

Referring to FIG. 2, another embodiment of the present invention provides a first linear slide 54 at the upper end of the movable carrier 40 and a second linear slide 56 at the lower end of the movable carrier 40. The combination of the movable carrier 40, the first mover 46 and the second mover 48 can thereby improve the stability of the movement. In addition, the first linear slide rail 54 and the second linear slide rail 56 are located between the first fixed plate 32 and the second fixed plate 34, so the first linear slide rail 54 and the second linear slide rail 56 can be used as the first Supporting and positioning members of a fixing plate 32 and a second fixing plate 34. The first linear slide 54 and the second linear slide 56 described above may be mini linear slides.

In this embodiment, the acoustic wave 10 passes through the sound collector 20 and acts on the movable carrier 40, so that the first mover 46 and the second mover 48 correspond to the first stator 42 and the second stator 44. Movement causes the first mover 46 and the second mover 48 to generate an induced current.

Although the acoustic wave 10 can be applied to the sound generating panel 30 and converted into electrical energy, the acoustic energy produces a small and unstable electrical energy, so that it is necessary to achieve a micro energy harvesting charging effect in the energy storage design.

Referring to FIG. 3, the sound power generation board 30 disclosed in the present invention can be electrically connected to a rectifier circuit 58 and an energy storage device 60. The rectifier circuit 58 is electrically connected to the sound power generation board 30, and is used to adjust the alternating current generated by the electromagnetic power generation unit 38 (see FIG. 1) of the sound power generation board 30 to direct current.

The energy storage device 60 is electrically connected to the rectifier circuit 58. Furthermore, the energy storage device 60 can include an electrical combination of a capacitor bank 62, an energy storage integrated circuit 64, and an external circuit 66. Wherein the energy storage integrated circuit 64 can be LTC3588.

The tiny, unstable electrical energy generated by the sound power generating panel 30 can be first stored in the energy storage device 60. When the electrical energy stored by the energy storage device 60 is sufficient to drive the suitable electrical device 68, electrical energy can be delivered to the electrical device 68. In other words, the energy storage device 60 composed of the capacitor group 62, the energy storage integrated circuit 64 and the external circuit 66 can achieve the effect of collecting minute energy and further store it. In addition to the electrical product, the electrical device 68 can also be a battery.

The following table shows the input of the power board structure shown in Figure 2 at a fixed sound frequency of 30 Hz for the experimental data of acoustic energy conversion, showing that the open circuit voltage, short circuit current and maximum output power are all along the sound power value (dB). It rises and becomes bigger.

Table 2 below is the experimental data of the power board structure shown in Figure 2 with a fixed sound power of 120dB for the conversion of the acoustic energy to the electric energy. It shows that the maximum output power reaches the maximum at the sound frequency from 10Hz to 30Hz; after 30Hz Each parameter becomes smaller as the sound frequency increases.

In the values of Tables 1 and 2, a relatively large output power of 21.50 mW can be obtained under the condition of a frequency of 30 Hz and a sound power value of 120 dB. Output this The power is charged to a 1.2V, 15mAh NiMH battery, which can be fully charged in about ten hours. Since acoustic energy is an unstable source of energy, charging cannot be maintained at the maximum output power. However, the above experimental data clearly demonstrates that the present invention has practical value.

The above is a preferred embodiment and the design of the present invention. The preferred embodiments and the drawings are merely illustrative and not intended to limit the scope of the invention. The scope of the rights covered by the content of the "Scope of Patent Application" is not within the scope of the invention and is the scope of the applicant's rights.

10‧‧‧Sonic

20‧‧‧ concentrator

22‧‧‧Outlet

30‧‧‧Sound power board

32‧‧‧First fixed plate

34‧‧‧Second fixed plate

36‧‧‧ Entrance

38‧‧‧Electromagnetic power generation components

40‧‧‧Removable carrier

42‧‧‧first stator

44‧‧‧second stator

46‧‧‧First mover

48‧‧‧Second mover

50‧‧‧spring group

52‧‧‧ Spring

54‧‧‧First linear slide

56‧‧‧Second linear slide

58‧‧‧Rectifier circuit

60‧‧‧ energy storage device

62‧‧‧Capacitor group

64‧‧‧ Energy storage integrated circuit

66‧‧‧External circuit

68‧‧‧Electrical devices

Fig. 1 is a schematic view showing the structure of a first embodiment of the sound power generating panel of the present invention.

Fig. 2 is a schematic view showing the structure of a second embodiment of the sound power generating panel of the present invention.

Fig. 3 is a schematic diagram showing the combination of the sound power generation board, the rectifier circuit and the energy storage device of the present invention.

Fig. 4 is an exploded view showing a first embodiment of the sound power generating panel of the present invention.

10‧‧‧Sonic

20‧‧‧ concentrator

22‧‧‧Outlet

30‧‧‧Sound power board

32‧‧‧First fixed plate

34‧‧‧Second fixed plate

36‧‧‧ Entrance

38‧‧‧Electromagnetic power generation components

40‧‧‧Removable carrier

42‧‧‧first stator

44‧‧‧second stator

46‧‧‧First mover

48‧‧‧Second mover

50‧‧‧spring group

52‧‧‧ Spring

Claims (5)

A high-efficiency sound power generation board for responding to a sound source and performing acoustic energy conversion, comprising: a first fixing plate; a second fixing plate opposite to the first fixing plate; and an inlet formed at The first fixing plate is a penetrating structure; an electromagnetic power generating component is disposed between the first fixing plate and the second fixing plate, and the electromagnetic power generating component comprises: a movable carrier plate, Movingly disposed between the first fixed plate and the second fixed plate; a first stator fixedly disposed on the first fixed plate; and a second stator fixedly disposed at the second fixed portion a first mover disposed on the movable carrier and corresponding to the first stator; a second mover disposed on the movable carrier and corresponding to the second stator; a spring a set between the movable carrier and the first fixed plate, and disposed between the movable carrier and the second fixed plate, thereby providing a force for reciprocating the movable carrier; a first linear slide rail, the first linear slide rail being mounted on the first fixed rail And the second fixed plate is connected to the upper end of the movable carrier plate; a second linear slide rail is mounted on the first fixed plate and the second linear slide rail Between the two fixed plates, and the second linear slide is connected to the lower end of the movable carrier; wherein the sound source can pass through the inlet and drive the movable carrier to generate displacement, and the first mover and the The first stator and the second mover are displaced relative to the second stator to generate an induced current. The high-efficiency sound power generation board according to claim 1, further comprising a sound collector installed between the sound source and the first fixed plate, the sound collector having an output port, and The output port corresponds to the entrance of the first fixed plate. A high efficiency sound power generation board energy storage system comprising: An acoustic power generating board is configured to convert sound generated by a sound source into acoustic energy, and has a first fixing plate and a second fixing plate, and an electromagnetic power generating component is disposed on the first fixing plate and Between the second fixed plates; a rectifying circuit electrically connecting the sound generating board and adjusting the alternating current generated by the electromagnetic power generating unit to direct current; and an energy storage device for electrically connecting the rectifying circuit The energy storage device includes an electrical combination of a capacitor bank, an energy storage integrated circuit, and an external circuit; wherein the electromagnetic power generation component includes a first stator, a second stator, and a movable carrier Configuring a first mover and a second mover, the first stator is disposed on the first fixed plate, the second stator is disposed on the second fixed plate, and the movable carrier is disposed at the first Between the fixed plate and the second fixed plate, and the first mover corresponds to the first stator, the second mover corresponds to the second stator; a first linear slide, the first linear slide Installed between the first fixing plate and the second fixing plate, and the first The sliding rail is connected to the upper end of the movable carrier; a second linear sliding rail is installed between the first fixing plate and the second fixing plate, and the second linear sliding rail is connected At the lower end of the movable carrier. The high-efficiency sound power generation board energy storage system of claim 3, wherein the first fixing plate has an inlet, the inlet corresponding to the sound source, and the sound generated by the sound source can pass through the inlet. And driving the electromagnetic power generation component. The high-efficiency sound power generation board energy storage system according to claim 3 or 4, further comprising a sound collector installed between the sound source and the first fixed board, and the sound collection The device collects sound and directs sound to the electromagnetic power generation component.