CN106208318A - Photoelectricity piezoelectricity charger baby based on various energy resources generating - Google Patents

Abstract

The invention discloses a photovoltaic electric power bank based on multiple energy sources for power generation, which includes a power bank housing, a lithium battery, a piezoelectric power generation device and a photoelectric power generation device; the piezoelectric power generation device includes a fixed arm, a movable column and multiple A piezoelectric ceramic sheet, the fixed arm is an L-shaped structure with a base and a side wall, the base of the fixed arm faces outwards, and the side wall faces inwards and is embedded in the housing of the charging treasure, and the movable column passes through the return The spring is installed on the other side of the fixed arm, and the movable column is connected to the inner wall of the charging treasure shell through the return spring, and multiple piezoelectric ceramic sheets are stacked in parallel between the side wall of the fixed arm and the movable column. The output electrodes of the piezoelectric ceramic sheets are connected in parallel to form the power output end of the piezoelectric power generation device; the photoelectric power generation device includes a photoelectric conversion material coated outside the casing of the charging treasure. The invention converts the external irradiated light into electric energy and stores the electric energy generated by pressure power generation, so as to ensure that the power bank can supply electric power without time limit.

Description

Photoelectric piezoelectric power bank based on multiple energy power generation

Technical Field

The invention belongs to the technical field of energy sources, and particularly relates to a photoelectric piezoelectric power bank based on power generation of various energy sources.

Background

In the modern times, along with the progress of science and technology, intelligent electronic products such as smart phones are widely popularized. But due to the limitation of science and technology, the cruising ability of the intelligent products is insufficient. People often feel the embarrassment that the electricity is not available when going out, so that the charger is born. However, the traditional charging bureau is limited to a fixed power source, and has the problem of endurance, which brings troubles to people. In view of such a phenomenon, we have studied a photoelectric power charger that can supply power without a time limit.

Disclosure of Invention

The invention aims to provide a photoelectric piezoelectric power bank based on power generation of various energy sources, which converts external irradiation light into electric energy for storage, generates the electric energy through pressure power generation for storage, and can realize real-time charging of the power bank through the two modes so as to ensure that the power bank supplies electric power without time limit.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a photoelectric power bank based on multiple energy power generation comprises a power bank shell and a lithium battery arranged in the power bank shell, wherein a power charging port and a plurality of USB interfaces are arranged on the power bank shell, and the power bank further comprises a piezoelectric power generation device and a photoelectric power generation device; wherein,

the piezoelectric power generation device comprises a fixed arm, a movable column and a plurality of piezoelectric ceramic pieces, wherein the fixed arm is of an L-shaped structure with a base and a side wall, the base of the fixed arm faces outwards, the side wall is embedded inwards in the charging treasure shell, the movable column is installed on the other side of the fixed arm through a return spring, the movable column is connected with the inner wall of the charging treasure shell through the return spring, the plurality of piezoelectric ceramic pieces are stacked in parallel and are arranged between the side wall of the fixed arm and the movable column, each piezoelectric ceramic piece comprises a metal gasket and piezoelectric crystal pieces which are glued on the upper side and the lower side of each metal gasket, the polarization directions of the piezoelectric crystal pieces are the same, the piezoelectric crystal pieces are polarized along the plane direction perpendicular to the metal gasket, the piezoelectric crystal pieces are mutually short-circuited to form one output electrode of the piezoelectric ceramic pieces, and the metal, the output electrodes of the piezoelectric ceramic pieces are mutually connected in parallel to form a power output end of the piezoelectric power generation device, and the power output end is connected with the lithium battery;

the photoelectric power generation device comprises a photoelectric conversion material coated outside the charger housing, and the photoelectric conversion material absorbs various external visible lights and converts the visible lights into electric energy to be stored in the lithium battery.

According to the technical scheme, the piezoelectric power generation device further comprises a rectifying/voltage stabilizing circuit, a filtering circuit and a direct current transformation circuit which are sequentially connected, wherein the rectifying circuit is connected with the power output ends of the plurality of piezoelectric ceramic pieces, and the direct current transformation circuit is connected with the lithium battery.

According to the technical scheme, the lithium battery is connected with the USB interfaces through the booster circuit and the charging circuit.

The invention has the following beneficial effects: according to the invention, the outer part of the charger shell is designed to be the photoelectric conversion material, so that external irradiation light can be directly converted into electric energy, and the electric energy is stored in the lithium battery through a corresponding circuit; meanwhile, under the condition of five external irradiation lights, the piezoelectric power generation device is pressed by hands, and the piezoelectric ceramic piece converts the pressure into electric power and stores the electric power in the lithium battery through a corresponding line; the stored electricity in the two modes can be output to the electrical appliance. The piezoelectric ceramic plates are connected in parallel, and 5 or more piezoelectric crystal plates with larger areas are connected in parallel to realize higher-power output compared with other connection modes. Compared with the traditional charger, the low-carbon power generation mode of self-charging the charger by adopting photoelectric and piezoelectric modes improves the practicability of the charger, reduces the dependence of the charger on a fixed power source, achieves the purpose of charging the electric appliance in the modes of hand pressing, illumination and the like when facing some special life scenes (the electric quantity of a mobile phone and the charger is exhausted during sightseeing in scenic spots and the like), and has good emergency effect.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a circuit schematic of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a piezoelectric power generating device according to an embodiment of the present invention;

FIG. 4 is a schematic circuit diagram of a piezoelectric power generator according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a rectifying/voltage stabilizing circuit according to an embodiment of the present invention.

In the figure: 1-charger shell, 2-piezoelectric induction button, 3-piezoelectric crystal piece, 4-piezoelectric ceramic piece, 5-metal gasket, 6-movable column, 7-fixed arm and 8-return spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In a preferred embodiment of the present invention, as shown in fig. 1 and fig. 3, a photoelectric piezoelectric power pack based on multiple energy power generation includes a power pack housing 1 and a lithium battery disposed in the power pack housing 1, the lithium battery has a capacity of a lithium battery of a normal power pack, and is used for storing electric energy and supplying power to other devices, the power pack housing 1 is provided with a power charging port and a plurality of USB interfaces, so as to satisfy a self power generation and storage function, and retain an original external power supply capability, the lithium battery has a higher charging efficiency and no memory effect, when the part works, the electric energy stored in the lithium battery supplies power to an electrical appliance through the USB interface, and the power charging port can be charged by a power source as with all ordinary power packs;

the charger baby also comprises a piezoelectric power generation device and a photoelectric power generation device;

as shown in fig. 3, the piezoelectric power generating device includes a fixed arm 7, a movable column 6 and a plurality of piezoelectric ceramic plates 4, the fixed arm 7 is an L-shaped structure having a base and a side wall, the base of the fixed arm 7 faces outward (forming a piezoelectric induction button 2), the side wall faces inward and is embedded in the charger housing 1, the movable column 6 is installed on the other side of the fixed arm 7 through a return spring 8, the movable column 6 is connected with the inner wall of the charger housing 1 through the return spring 8, the plurality of piezoelectric ceramic plates 4 are stacked in parallel between the side wall of the fixed arm 7 and the movable column 6, each piezoelectric ceramic plate 4 includes a metal gasket 5 and piezoelectric crystal plates 3 glued on the upper and lower two side surfaces of each metal gasket 5, the piezoelectric crystal plates 3 have the same polarization direction and are polarized along the plane direction perpendicular to the metal gasket 5, the piezoelectric crystal plates 3 are shorted to each other to form one of the output electrodes of the, the metal gasket 5 is used as another output electrode of the piezoelectric ceramic pieces, the output electrodes of the piezoelectric ceramic pieces 4 are mutually connected in parallel to form a power output end of the piezoelectric power generation device, the power output end is connected with the lithium battery, and when the part works, the pressure applied from the outside is transmitted to the piezoelectric ceramic pieces to be converted into electric energy;

as shown in fig. 1, the photovoltaic power generation apparatus includes a photovoltaic conversion material coated outside the charger housing, the photovoltaic conversion material absorbs various external visible lights and converts the visible lights into electric energy to be stored in the lithium battery, the photovoltaic conversion material, i.e., the photodiode, can absorb various forms of light energy to excite the photovoltaic conversion material to be divided into negatively charged electrons and positively charged holes, and the electrons and the positively charged holes are transferred to the electrodes, so as to directly convert the light energy into electric energy, and then the electric energy is transferred to the lithium battery storing the electric energy according to a circuit connected with the lithium battery.

In a preferred embodiment of the present invention, as shown in fig. 4 and 5, the piezoelectric power generating device further includes a rectifying/voltage stabilizing circuit, a filtering circuit and a dc transforming circuit, which are connected in sequence, wherein the rectifying circuit is connected to the power output ends of the plurality of piezoelectric ceramic pieces, and the dc transforming circuit is connected to the lithium battery.

In a preferred embodiment of the present invention, as shown in fig. 2, the lithium battery is connected to each USB interface through a boost circuit and a charging circuit.

As shown in fig. 1 and 2, the photoelectric power generation device of the present invention uses the photoelectric conversion material outside the charger housing to absorb the external visible light and convert it into electric energy by using the photoelectric conversion principle, and then directly inputs the electric energy into the lithium battery through the circuit, and the photoelectric part current is: i ═ s μ, the area of the photoelectric shell is s, and the photoelectric conversion rate is μ.

The interior of the piezoelectric power generation device of the charger is composed of a plurality of piezoelectric crystal pieces and metal gaskets, the piezoelectric ceramic piece 4 can adopt the piezoelectric ceramic piece which is known at present, when the piezoelectric ceramic piece works, the pressure applied from the outside is transmitted to the piezoelectric ceramic piece to convert the piezoelectric ceramic piece into electric energy, the piezoelectric ceramic piece adopted in the invention is PZT ceramic, and the raw material is PbZrxTi {1-x } O3 (lead zirconate titanate).

The general circuit diagram of the piezoelectric power generator is shown in fig. 4: rectifying by using a full-bridge rectifying circuit; filtering by using a filter capacitor; a voltage stabilizing tube is used for stabilizing voltage; the lithium ion battery is directly charged after the voltage transformation of the direct current transformation circuit. Setting the length of the beam as L and the width as a; the thickness of the piezoelectric ceramic intermediate metal gasket is t 1; the wafer thickness is t 2; under the action of external force, the deflection in the x direction is h ═ Hsinwt; the area of the photoelectric shell is s; the photoelectric conversion rate is mu; then the ideal load is

$R_{OPT}=\frac{t_c}{2al\mathrm{\ω}\sqrt{{\stackrel{\‾}{{\mathrm{\ϵ}}_{33}}}^2+{\left({\mathrm{\ϵ}}_{33}^T\right)}^2}};$

Output a total voltage of

Output a total current of

Total output power of

$p=\frac{9a^2{(t_c+t_{sh})}^2{d}_{31}^2{H}^2{\mathrm{\ωt}}_C^{2}R}{8{\left(s_{11}^E\right)}^2{l}^2\{t_c^2+4a^2{l}^2{\mathrm{\ω}}^2{R}^2\[{\stackrel{\‾}{{\mathrm{\ϵ}}_{33}}}^2+{\left({\mathrm{\ϵ}}_{33}^T\right)}^2\]\}}+s^2{\mathrm{\μ}}^2/R;$

Maximum output power of

$P_{MAX}=\frac{9w(t_c+t_{sh})d_{31}^2{H}^2{\mathrm{\ωt}}_c}{32{\left(s_{11}^E\right)}^2{l}^3\sqrt{{\stackrel{\‾}{{\mathrm{\ϵ}}_{33}}}^2+{\left({\mathrm{\ϵ}}_{33}^T\right)}^2}}+s^2{\mathrm{\μ}}^2/R$

In the invention, the charging current consists of a piezoelectric induction part and a photoelectric induction part; the total charging current and voltage are obtained by adding two parts. The low-carbon power generation modes of pressure-sensitive power generation and photoelectric conversion are achieved by the charger, which cannot be achieved by the traditional charger. Compared with the existing connection method of the hexagonal prism type piezoelectric ceramic array based on the movable column, the piezoelectric ceramic pieces are connected in parallel, the required space is small, the utilization rate is high, and the connection method has the advantages of simple structure, high space utilization rate and high output power; and because of adopting the parallel superposition type structure, compared with the prior patent, the connecting mode of the invention has higher space utilization rate, so the number of the piezoelectric ceramic pieces can be increased or decreased in production according to the actual use condition.

The invention supplies current to the lithium battery through the 2 power supply modes, and then the lithium battery supplies power to the electric appliance, and the lithium battery can be used as an emergency power supply when going out to supply power to small electronic equipment such as mobile phones and the like. However, the two power generation modes at the present stage have the problems of low conversion rate and the like, and cannot completely replace the traditional charging mode, so the invention aims to provide an emergency means to prevent the situation that the power bank and the electric equipment are not powered, is suitable for emergency charging after the power bank stores the power to be exhausted, and solves the embarrassment situation caused by sudden power failure of the electric equipment (such as a mobile phone) when people go out.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (3)

1. A photovoltaic power bank based on multiple energy sources, the power bank includes a power bank housing and a lithium battery disposed in the power bank housing, and the power bank housing is provided with a power charging port And a plurality of USB interfaces, it is characterized in that, described power bank also comprises piezoelectric generating device and photoelectric generating device; Wherein, The piezoelectric generating device includes a fixed arm, a movable column and a plurality of piezoelectric ceramic sheets, the fixed arm is an L-shaped structure with a base and side walls, the base of the fixed arm faces outwards, and the side walls are embedded inwards Set in the charging treasure shell, the movable column is installed on the other side of the fixed arm through the return spring, the movable column is connected with the inner wall of the charging treasure shell through the return spring, and multiple piezoelectric ceramic sheets are parallel Superimposed between the side wall of the fixed arm and the movable column, each piezoelectric ceramic sheet includes a metal gasket and a piezoelectric crystal sheet glued on the upper and lower sides of each metal gasket, the piezoelectric crystal sheet The polarization direction is the same, and they are all polarized along the plane direction perpendicular to the metal gasket. The piezoelectric crystal pieces are shorted to form one of the output electrodes of the piezoelectric ceramic piece, and the metal spacer is used to form the other of the piezoelectric ceramic piece. Output electrodes, the output electrodes of multiple piezoelectric ceramic sheets are connected in parallel to form the power output end of the piezoelectric power generation device, and the power output end is connected to the lithium battery; The photoelectric power generation device includes a photoelectric conversion material coated on the outside of the charging treasure casing, and the photoelectric conversion material absorbs various external visible light and converts it into electrical energy for storage in the lithium battery. 2. The charging treasure according to claim 1, characterized in that, the piezoelectric power generation device further comprises a rectification/stabilization circuit, a filter circuit and a DC transformer circuit connected in sequence, and the rectification circuit is connected with a plurality of piezoelectric The power output end of the ceramic sheet is connected, and the DC transformer circuit is connected with the lithium battery. 3. The power bank according to claim 1, wherein the lithium battery is connected to each USB interface through a boost circuit and a charging circuit.