A combined power generation device based on dielectric elastomer

Abstract

The invention discloses a combined power generation device based on a dielectric elastomer, comprising a windmill, a main shaft, a half gear, a full gear, a chain rod, a dielectric elastomer, a shell, a solar panel, a column, a connecting shaft and a bearing support; the left and right ends of the main shaft are respectively connected to the windmill and the half gear, the half gear is meshed with the full gear, the windmill drives the main shaft and the half gear to perform rotational motion and causes the full gear to perform periodic repeated rotation, the full gear is connected to the dielectric elastomer through the chain rod and drives the dielectric elastomer to perform periodic stretching and compression motion, the solar panel converts solar energy into electrical energy to provide an initial voltage for the dielectric elastomer, and the dielectric elastomer can convert mechanical energy into electrical energy after the voltage is input; the invention has a simple structure and a unique transmission mode, converts wind energy and solar energy into electrical energy, has high energy conversion efficiency and power generation efficiency, provides an initial voltage for the dielectric elastomer through solar energy, does not require external power supply access, saves energy, and reduces other energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy and power generation, and in particular to a combined power generation device based on a dielectric elastomer. Background Art

[0002] Driven by the policy of "carbon neutrality and carbon peak", it is imperative to develop new low-carbon, zero-carbon and negative-carbon power generation technologies. Among the many power generation technologies, the use of dielectric elastomers for power generation is a clean and efficient green energy collection technology. Dielectric elastomers are a new type of intelligent polymer material that can convert environmental energy such as wind energy and wave energy into electrical energy through mechanical devices. The power generation process does not consume fossil fuels and has no carbon emissions. Therefore, the use of dielectric elastomers for power generation is a very promising way of power generation.

[0003] The principle of dielectric elastomer power generation is shown in the attached Figure 4 As shown: The basic function of the "sandwich" dielectric elastomer material with flexible electrodes coated on the upper and lower surfaces is equivalent to a variable capacitor. The "1 tensioning → 2 charging → 3 unloading → 4 discharging" shown in the above figure is a working cycle. In the first stage, the film is stretched and deformed, and the mechanical energy is converted into the elastic potential energy of the material, and the capacitance of the structure reaches the maximum; in the second stage, the dielectric elastomer is charged, and the structure has initial electric potential energy; in the third stage, the deformation is restored, the electric field force does negative work, the electric energy of the structure increases, and the conversion of mechanical energy to electric energy is completed; in the fourth stage, the electric energy is discharged and the electric energy is collected.

[0004] Based on the power generation principle of dielectric elastomers, technicians have designed different power generation devices. Chinese patent CN211038897U discloses a turbine-type dielectric elastomer hydroelectric generator, which can convert the rotational motion of the turbine into the reciprocating linear motion of the dielectric elastomer through an eccentric wheel, thereby realizing the stretching and compression of the dielectric elastomer. Chinese patent CN112814830A discloses a combined power generation device including a wave energy power generation unit and a fuel cell power generation unit. The device uses an external voltage to charge the dielectric elastomer, and then the dielectric elastomer converts the wave energy into electrical energy, and then uses this electrical energy to electrolyze seawater to produce hydrogen, thereby providing a source of hydrogen and oxygen for the fuel cell power generation unit to generate electricity. Chinese patent CN109882359A discloses a wind power generation device based on the superposition of multiple layers of dielectric elastomer membranes, which converts the rotational motion of the windmill into the stretching and compression motion of the dielectric elastomer through a cam mechanism. There are many other power generation devices based on dielectric elastomers. Due to space limitations, this application only lists the prior art that is closest to the present invention.

[0005] Compared with the existing technology, the following technical problems need to be solved in the device using dielectric elastomers to generate electricity. First, most of the existing power generation devices convert water energy, wind energy, tidal energy, etc. into the stretching and contraction of dielectric elastomers, and do not involve the charging problem of dielectric elastomers. It can be seen from the principle of power generation of dielectric elastomers that they need to be charged in their stretched state, otherwise the energy conversion cannot be completed. If the dielectric elastomer is charged by batteries, connecting to external power supplies, etc., the existing energy must be consumed, which reduces the power generation efficiency. Therefore, it is necessary to select a suitable charging method for the dielectric elastomer; Second, the dielectric elastomers of the existing power generation devices are stretched or compressed at the same time, and the movement process is continuous. The continuous deformation makes it difficult to accurately control the charging and discharging process of the dielectric elastomer. Therefore, it is necessary to pause during the deformation process of the dielectric elastomer to leave time for charging and discharging. Summary of the invention

[0006] The purpose of the present invention is to provide a combined power generation device based on dielectric elastomer to solve the problems existing in the above-mentioned prior art, thereby making full use of wind energy and solar energy resources, reducing the consumption of conventional energy, improving wind power generation efficiency, reducing environmental pollution, and promoting the development of the new energy industry.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The invention discloses a combined power generation device based on a dielectric elastomer, comprising a windmill, a main shaft, a half gear, a full gear, a chain rod, a dielectric elastomer, a housing, a solar panel, a column, a connecting shaft and a bearing support;

[0009] Among them, the windmill is located at the leftmost end, the left and right ends of the main shaft are connected to the windmill and the half gear respectively, the half gear is meshed with the full gear, the windmill drives the main shaft and the half gear to rotate and makes the full gear rotate periodically and repeatedly, the full gear is connected to the dielectric elastomer through the chain rod and drives the dielectric elastomer to perform periodic stretching and compression movements, one end of the dielectric elastomer is connected to the outer shell, the solar panel is installed on the outer shell and the column, the solar panel converts solar energy into electrical energy to provide an initial voltage for the dielectric elastomer, and the excess electrical energy can be stored. After the voltage is input, the dielectric elastomer can use its material properties to convert mechanical energy into electrical energy.

[0010] Preferably, the windmill is arranged on the outside of the shell, and the half gear, full gear, chain rod and dielectric elastomer are arranged on the inside of the shell, the length of the continuously arranged gear teeth on the edge of the half gear is less than half of its circumference, the edge of the full gear is covered with gear teeth, there are two full gears and they are symmetrically distributed on both sides of the main shaft, two chain rods are connected to the outside of each full gear, and the other end of each chain rod is connected to the dielectric elastomer.

[0011] Preferably, the chain rods are symmetrically distributed on the upper and lower edges of the full gear, and the rotation planes of the two chain rods on the same side do not overlap.

[0012] Preferably, the chain rod is connected to the full gear and the dielectric elastomer by hinged connection.

[0013] Preferably, the two full gears are connected by the connecting shaft, wherein the rotation of one full gear drives the rotation of the other full gear, and the connecting shaft is fixed to the housing via the bearing support.

[0014] Preferably, there are four dielectric elastomers in total, and the four dielectric elastomers are symmetrically distributed front to back and top to bottom.

[0015] Preferably, the dielectric elastomer may be a single-layer film or a laminated dielectric elastomer film, and the upper and lower surfaces of each dielectric elastomer are coated with a flexible electrode layer.

[0016] Preferably, the solar panels are arranged to face the sun, and the angles of the solar panels can be adjusted according to the region.

[0017] Preferably, part of the electric energy converted by the solar panel is used to provide an initial voltage for the dielectric elastomer, and the other part of the electric energy is transmitted together with the electric energy generated by the dielectric elastomer to a battery or is incorporated into a power grid.

[0018] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0019] 1. The present invention provides a combined power generation device based on a dielectric elastomer, which uses a solar panel to convert solar energy into electrical energy to provide an initial voltage for the dielectric elastomer. The excess electrical energy can be stored. After the voltage is input, the dielectric elastomer uses its material properties to convert mechanical energy into electrical energy. The charging of the dielectric elastomer of this device does not require connection to an external power supply, which reduces the consumption of existing energy, realizes self-sufficient solar-wind bidirectional power generation, and improves power generation efficiency;

[0020] 2. This device utilizes the gear transmission mechanism and the chain rod mechanism to make the dielectric elastomer undergo periodic stretching and compression movements. Since the arrangement length of the half-gear teeth is less than half of its circumference, a temporary pause is generated between the forward and reverse rotation of the full gear, thereby causing a temporary pause between the tensile deformation and the compressive deformation of the dielectric elastomer. The temporary pause in deformation leaves time for the charging and discharging of the dielectric elastomer, thereby enhancing the operability of the entire power generation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of a combined power generation device based on a dielectric elastomer in the present invention;

[0023] Figure 2 It is an axonometric view of a mechanical transmission mechanism inside a housing of a combined power generation device based on a dielectric elastomer in the present invention;

[0024] Figure 3 A top view of a mechanical transmission mechanism inside a housing of a combined power generation device based on a dielectric elastomer in the present invention;

[0025] Figure 4 A schematic diagram of the power generation principle of a dielectric elastomer-based combined power generation device of the present invention;

[0026] In the figure: 1-windmill, 2-main shaft, 3-half gear, 4-full gear, 4-1-right full gear, 4-2-left full gear, 5-chain rod, 6-dielectric elastomer, 7-housing, 8-solar panel, 9-column, 10-connecting shaft, 11-bearing support. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a combined power generation device based on a dielectric elastomer to solve the problems existing in the prior art.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In this embodiment, a combined power generation device based on a dielectric elastomer is Figure 1 , 2 As shown in 3, it includes 1-windmill, 2-main shaft, 3-half gear, 4-full gear, 4-1-right full gear, 4-2-left full gear, 5-chain rod, 6-dielectric elastomer, 7-housing, 8-solar panel, 9-column, 10-connecting shaft, 11-bearing support;

[0031] Among them, the windmill 1 is located at the leftmost end, and the left and right ends of the main shaft 2 are respectively connected to the windmill 1 and the half gear 3, and the half gear 3 is meshed with the full gear 4. The windmill 1 drives the main shaft 2 and the half gear 3 to rotate and makes the full gear 4 rotate repeatedly periodically. The full gear 4 is connected to the dielectric elastomer 6 through the chain rod 5 and drives the dielectric elastomer 6 to perform periodic stretching and compression movements. One end of the dielectric elastomer 6 is connected to the outer shell 7. The solar panel 8 is installed on the outer shell 7 and the column 9. The solar panel 8 converts solar energy into electrical energy to provide an initial voltage for the dielectric elastomer 6. The excess electrical energy can be stored. After the voltage is input, the dielectric elastomer 6 can use its material properties to convert mechanical energy into electrical energy.

[0032] In this specific embodiment, the windmill 1 is arranged on the outside of the outer shell 7, and the half gear 3, the full gear 4, the chain rod 5 and the dielectric elastomer 6 are arranged on the inside of the outer shell 7. The length of the continuously arranged gear teeth on the edge of the half gear 3 is less than half of its circumference. The edge of the full gear 4 is covered with gear teeth. There are two full gears 4 and they are symmetrically distributed on both sides of the main shaft 2. Two chain rods 5 are connected to the outside of each full gear 4, and the other end of each chain rod 5 is connected to the dielectric elastomer 6.

[0033] In this specific embodiment, the chain rods 5 are symmetrically distributed on the upper and lower edges of the full gear 4, the rotation planes of the two chain rods 5 on the same side do not overlap, and the connection between the chain rod 5 and the full gear 4 and the dielectric elastomer 6 is hinged.

[0034] In this specific embodiment, the two full gears 4 are connected by the connecting shaft 10 , and the rotation of one full gear will drive the other full gear to rotate. The connecting shaft 10 is fixed to the housing 7 through the bearing support 11 .

[0035] In this specific embodiment, there are four dielectric elastomers 6, which are symmetrically distributed front to back and up to down. The dielectric elastomer 6 can be a single-layer film or a stacked dielectric elastomer film. The upper and lower surfaces of each dielectric elastomer 6 are coated with a flexible electrode layer.

[0036] In this specific embodiment, the solar panels 8 are arranged to face the sun, and the angle of the solar panels 8 can be adjusted according to the region. Part of the electric energy converted by the solar panels 8 provides an initial voltage for the dielectric elastomer 6, and the other part of the electric energy is transmitted to the battery or connected to the power grid together with the electric energy generated by the dielectric elastomer 6.

[0037] Specific working process: Figure 1 , 2 As shown in FIG. 3 , for the convenience of description, it is assumed that the tooth arrangement length of the half gear 3 is one-quarter of the circumference. If at the starting position, the teeth of the half gear 3 are meshed with the right full gear 4-1, and the four chain rods 5 are located in a parallel state up and down, left and right. When the windmill 1 rotates counterclockwise and drives the half gear 3 to rotate counterclockwise, the half gear 3 drives the right full gear 4-1 to rotate clockwise through the teeth, and the left full gear 4-2 is also driven by the connecting shaft 10 to rotate clockwise. The full gears 4 on both sides pull the chain rods 5 and cause the dielectric elastomer 6 to undergo a stretching movement.

[0038] Further, when the half gear 3 rotates 90°, the gear teeth of the half gear 3 are disengaged from the right full gear 4 - 1 , and the dielectric elastomer 6 is stretched to the maximum and maintains the stretched state.

[0039] Furthermore, when the half gear 3 rotates 180°, the gear teeth of the half gear 3 contact the left full gear 4-2 and drive the left full gear 4-2 to rotate counterclockwise, and the right full gear 4-1 is also driven by the connecting shaft 10 to rotate counterclockwise, and the full gears 4 on both sides push the chain rod 5 and cause the dielectric elastomer 6 to undergo compression movement.

[0040] Further, when the half gear 3 rotates 270°, the gear teeth of the half gear 3 disengage from the left full gear 4 - 2 , and the dielectric elastomer 6 returns to the initial state and maintains it.

[0041] Further, when the half gear 3 rotates 360°, the gear teeth of the half gear 3 contact the right full gear 4 - 1 , and the dielectric elastomer 6 enters the next round of “tension-compression” movement.

[0042] Furthermore, the solar panel 8 converts solar energy into electrical energy due to the photovoltaic effect. The electrical energy generated by the solar panel 8 charges the dielectric elastomer 6 when it is stretched to the maximum, and discharges when the dielectric elastomer 6 returns to its initial state, converting mechanical energy into electrical energy. The excess electrical energy of the solar panel 8 and the electrical energy generated by the dielectric elastomer 6 are transmitted together to the battery or connected to the power grid.

[0043] Beneficial effects: The method realizes the use of solar energy to charge the dielectric elastomer, reduces the consumption of existing energy and improves the power generation efficiency; realizes the temporary pause of the dielectric elastomer during the stretching and compression process, leaves time for the charging and discharging of the dielectric elastomer, and improves the operability; the present invention realizes the simultaneous collection of wind energy and solar energy, improves the energy collection efficiency, and has important theoretical significance and application prospects in new renewable energy and industrial applications.

[0044] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A combined power generation device based on dielectric elastomer, characterized in that It includes a windmill, a main shaft, a half gear, a full gear, a chain rod, a dielectric elastomer, a shell, a solar panel, a column, a connecting shaft and a bearing support; The windmill is located at the leftmost end, and the left and right ends of the main shaft are connected to the windmill and the half gear respectively. The length of the continuous arrangement of the teeth on the edge of the half gear is less than half of its circumference, and the edge of the full gear is covered with teeth. There are two full gears and they are symmetrically distributed on both sides of the main shaft. The half gear is meshed with the full gear. The windmill drives the main shaft and the half gear to rotate and makes the full gear rotate repeatedly periodically. The full gear is connected to the dielectric elastomer through the chain rod and drives the dielectric elastomer to perform periodic stretching and compression movements. One end of the dielectric elastomer is connected to the shell. The solar panel is installed on the shell and the column. The solar panel converts solar energy into electrical energy to provide an initial voltage for the dielectric elastomer. The excess electrical energy can be stored. After the voltage is input, the dielectric elastomer can use its material properties to convert mechanical energy into electrical energy. The two full gears are connected by the connecting shaft, and the rotation of one full gear will drive the rotation of the other full gear. The connecting shaft is fixed to the shell through the bearing support.

2. The combined power generation device based on dielectric elastomer according to claim 1, characterized in that: The windmill is arranged outside the shell, and the half gear, full gear, chain rod and dielectric elastomer are arranged inside the shell. Two chain rods are connected to the outer side of each full gear, and the other end of each chain rod is connected to the dielectric elastomer.

3. The combined power generation device based on dielectric elastomer according to claim 2, characterized in that: The chain rods are symmetrically distributed on the upper and lower edges of the full gear, and the rotation planes of the two chain rods on the same side do not overlap.

4. The combined power generation device based on dielectric elastomer according to claim 1, characterized in that: The chain rod is connected to the full gear and the dielectric elastomer in an articulated manner.

5. The combined power generation device based on dielectric elastomer according to claim 1, characterized in that: There are four dielectric elastomers in total, and the four dielectric elastomers are symmetrically distributed front to back and top to bottom.

6. The combined power generation device based on dielectric elastomer according to claim 1, characterized in that: The dielectric elastomer may be a single-layer film or a laminated dielectric elastomer film, and the upper and lower surfaces of each dielectric elastomer are coated with flexible electrode layers.

7. The combined power generation device based on dielectric elastomer according to claim 1, characterized in that: The solar panels are all arranged to face the sun, and the angles of the solar panels can be adjusted according to the region.

8. The combined power generation device based on dielectric elastomer according to claim 1, characterized in that: A part of the electric energy converted by the solar panel provides an initial voltage for the dielectric elastomer, and the other part of the electric energy is transmitted to the battery or connected to the power grid together with the electric energy generated by the dielectric elastomer.

Images