CN110594078A

CN110594078A - Wave-activated generator

Info

Publication number: CN110594078A
Application number: CN201910911647.2A
Authority: CN
Inventors: 谭亦旻; 张祖光
Original assignee: Shenzhen Yangneng Technology Co Ltd
Current assignee: Shenzhen Yangneng Technology Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2019-12-20

Abstract

The application discloses a wave power generator, which comprises a main body shell with an installation cavity, a floating piece, a permanent magnet shaft, a transmission main shaft, a coil assembly and a battery pack, wherein the floating piece is slidably installed outside the main body shell; a linear bearing is arranged on the main body shell, and the transmission main shaft is slidably arranged on the linear bearing; one end of the transmission main shaft connected with the coil assembly is positioned in the mounting cavity. Because the coil assembly is sleeved outside the permanent magnet shaft, the power generation can be realized by cutting the magnetic induction lines when the transmission main shaft drives the coil assembly to move up and down, and the battery pack is used for storing electric energy generated by the coil assembly. Because the floating part directly drives the coil assembly to complete branch movement through the transmission main shaft, compared with a power generation mode in the prior art in which energy is transmitted by transmission parts such as gears and the like, the power generation device reduces intermediate loss and improves power generation efficiency.

Description

Wave-activated generator

Technical Field

The application relates to ocean new forms of energy field especially relates to wave-activated generator.

Background

The existing marine generator is mainly a rotating electrical machine, and a transmission mechanism is required to be arranged to convert marine energy into a transmission mechanism meeting the power generation requirement of the rotating electrical machine during power generation of the rotating electrical machine, so that the efficiency of energy conversion is reduced, and the size of the wave-activated generator is large.

Disclosure of Invention

The utility model provides a purpose provides wave-activated generator, aims at solving prior art, and wave-activated generator generating efficiency is low and be difficult to the problem of miniaturization.

To achieve the purpose, the following technical scheme is adopted in the application:

the wave power generator comprises a main body shell with an installation cavity, a floating piece, a permanent magnet shaft, a transmission main shaft, a coil assembly, a battery pack and an energy management device, wherein the floating piece is slidably installed outside the main body shell; the main body shell is provided with a linear bearing, and the transmission main shaft is slidably mounted on the linear bearing; and one end of the transmission main shaft connected with the coil assembly is positioned in the mounting cavity.

Furthermore, a connecting disc is arranged between the transmission main shaft and the coil assembly, and the coil assembly is connected with the transmission main shaft through the connecting disc.

Furthermore, a joint bearing is arranged between the transmission main shaft and the connecting disc; the transmission main shaft is connected with the connecting disc through the joint bearing.

Furthermore, the number of the coil assemblies is multiple, the number of the permanent magnet shafts is the same as that of the coil assemblies, and the permanent magnet shafts correspond to the coil assemblies one by one.

Further, a plurality of the coil assemblies are located on the same circumference; the circle centers of the circumferences where the coil assemblies are located on the axis of the transmission main shaft.

Further, the axis of the drive spindle is collinear with the axis of the main body housing.

Furthermore, a connecting frame is arranged between the transmission main shaft and the floating part; the transmission main shaft is connected with the floating part through the connecting frame; the connecting frame comprises a plurality of connecting rods arranged around the transmission main shaft; one end of the connecting rod is connected with the transmission main shaft, and the other end of the connecting rod is connected with the floating piece.

Further, the permanent magnet shaft is a Halbach array magnetic shaft.

Furthermore, a guide groove is formed in the floating piece, and a guide protrusion positioned in the guide groove is arranged on the main body shell; a Teflon sliding sleeve is arranged in the guide groove.

Furthermore, an upper sealing cover and a lower sealing cover are respectively arranged at two ends of the main body shell; and a bearing fixer is arranged between the linear bearing and the upper closing cover, and the linear bearing is fixedly arranged on the upper closing cover through the bearing fixer.

Furthermore, an O-shaped sealing ring is arranged between the linear bearing and the upper closing cover.

Furthermore, a double-Y-shaped sealing ring is arranged between the transmission main shaft and the linear bearing.

Furthermore, the outer surface of the main body shell is provided with limiting rings, and the limiting rings are positioned in the middle and at the top of the main body shell; the limiting ring is connected with the guide bulge.

Furthermore, the mounting device also comprises an upper mounting disc arranged in the mounting cavity and a lower mounting disc arranged in the mounting cavity; the permanent magnet shaft is arranged between the upper mounting disc and the lower mounting disc.

Further, a first spring is arranged between the coil assembly and the upper mounting plate;

and/or a second spring is arranged between the coil assembly and the lower mounting plate.

Further, when the coil assembly and the upper mounting disc are provided with the first spring, the first spring is sleeved outside the permanent magnet shaft, the upper mounting disc is provided with a first mounting part, and the first spring is fixedly mounted on the upper mounting disc through the first mounting part.

Further, when the coil assembly and the lower mounting disc are provided with the second spring, the second spring is sleeved outside the permanent magnet shaft, the lower mounting disc is provided with a second mounting part, and the second spring is fixedly mounted on the lower mounting disc through the second mounting part.

The beneficial effect of this application: when the floating piece is arranged on the water surface, the floating piece can move up and down relative to the main body shell under the driving of waves, the transmission main shaft connected with the floating piece moves up and down along with the floating piece, the transmission main shaft drives the coil assembly to move up and down, and the coil assembly is sleeved outside the permanent magnet shaft, so that power generation can be realized by cutting the magnetic induction lines when the transmission main shaft drives the coil assembly to move up and down, and the battery pack is used for storing electric energy generated by the coil assembly. Because the floating part directly drives the coil assembly to complete branch line movement through the transmission main shaft, the power generation requirement of the linear generator is met, and compared with a power generation mode in the prior art in which energy transmission is realized through transmission parts such as gears, the power generation efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a wave power generator according to an embodiment of the present application;

FIG. 2 is a partial view of the wave power generator of FIG. 1;

fig. 3 is a schematic structural view of the permanent magnet shaft, the upper mounting plate and the lower mounting plate after being assembled in the embodiment of the present application;

FIG. 4 is a cross-sectional view of a permanent magnet shaft and coil assembly according to an embodiment of the present application;

in the figure:

1. a main body housing; 101. a mounting cavity; 102. a guide projection; 103. a limiting ring; 2. a float member; 201. a guide groove; 202. a Teflon sliding sleeve; 3. a permanent magnet shaft; 4. a transmission main shaft; 5. a coil assembly; 501. a coil; 502. a sleeve; 6. a battery pack; 7. a linear bearing; 8. a connecting disc; 9. a knuckle bearing; 10. a connecting frame; 1001. a connecting rod; 11. an upper closure cap; 12. a lower closure cap; 13. a bearing retainer; 14. an O-shaped sealing ring; 15. a double-Y-shaped sealing ring; 16. an upper mounting plate; 17. a lower mounting plate; 18. a first spring; 19. a second spring; 20. a first mounting member; 21. a second mount; 22. a slider; 23. a guide rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application 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 present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The following detailed description of implementations of the present application is provided in conjunction with specific embodiments.

As shown in fig. 1, the embodiment of the present application provides a wave-activated generator, which includes a main body housing 1 having a mounting cavity 101, a floating member 2 slidably mounted outside the main body housing 1, a permanent magnet shaft 3 disposed in the mounting cavity 101, a transmission spindle 4 connected to the floating member 2, a coil assembly 5 connected to the transmission spindle 4 and sleeved outside the permanent magnet shaft 3, and a battery pack 6 (which may include an energy management device for controlling the operation of the battery pack 6) electrically connected to the coil assembly 5; a linear bearing 7 is arranged on the main body shell 1, and the transmission main shaft 4 is slidably mounted on the linear bearing 7; one end of the transmission main shaft 4 connected with the coil assembly 5 is positioned in the mounting cavity 101.

In the embodiment of this application, the whole vertical placement of wave-activated generator, also main body cover 1 distributes along vertical direction, floating piece 2 can slide along vertical direction relatively main body cover 1, consequently when floating piece 2 arranges the surface in the water, floating piece 2 can be relative main body cover 1 up-and-down motion under the drive of wave, transmission main shaft 4 that links to each other with floating piece 2 is along with floating piece 2 up-and-down motion, transmission main shaft 4 drives coil pack 5 up-and-down motion, because coil pack 5 covers the outside of locating permanent magnet axle 3, therefore the accessible cuts magnetic induction line when transmission main shaft 4 drives coil pack 5 up-and-down motion and realizes the electricity generation, battery pack 6 is used for the electric energy that storage coil pack 5 produced. Because the floating part 2 directly drives the coil component 5 to complete branch line movement through the transmission main shaft 4, the power generation requirement of the linear generator is met, and compared with a power generation mode in the prior art which realizes energy transmission through transmission parts such as gears, the power generation efficiency is improved, and the miniaturization of the wave power generator is realized. Because the transmission main shaft 4 is slidably mounted on the linear bearing 7, when the transmission main shaft 4 moves along with the floating part 2, the transmission main shaft 4 can slide along the linear bearing 7, so that the transmission main shaft 4 can do stable movement along the linear bearing 7, the coil component 5 is driven to move stably, the efficiency of cutting the magnetic induction lines by the coil component 5 can be further improved, and the efficiency of generating electricity is finally improved.

The coil assembly 5 is provided with a sliding block 22, a guide rod 23 is arranged in the mounting cavity 101, and the sliding block 22 is slidably mounted on the guide rod 23 so as to prevent the coil assembly 5 from transversely deflecting when moving up and down.

Specifically, the battery pack 6 may be located at the bottom of the main body case 1, which may be advantageous in lowering the center of gravity and improving stability. The cross-section of the float member 2 may be dish-shaped. The bottom of the main body shell 1 can be provided with a counterweight damping plate to ensure that the wave-activated generator keeps stable in the water body.

Further, referring to fig. 2, as another specific embodiment of the wave-activated generator provided by the present application, a connecting disc 8 is disposed between the transmission main shaft 4 and the coil assembly 5, and the coil assembly 5 is connected to the transmission main shaft 4 through the connecting disc 8. That is, the transmission main shaft 4 is indirectly connected with the coil assembly 5 through the connecting disc 8, so that the coil assembly 5 can be stably installed on the connecting disc 8, the efficiency of cutting the magnetic induction line by the coil assembly 5 is guaranteed, and the power generation efficiency is finally improved.

Further, referring to fig. 2, as another specific embodiment of the wave-activated generator provided by the present application, a joint bearing 9 is disposed between the transmission main shaft 4 and the connecting disc 8; the transmission main shaft 4 is connected with a connecting disc 8 through a joint bearing 9. The transmission main shaft 4 is connected with the connecting disc 8 through the joint bearing 9, specifically, the triple ball joint bearing 9 can eliminate the influence of errors such as assembly on a transmission structure, namely, even if the transmission main shaft 4 is not aligned to the middle of the connecting disc 8 during installation, the joint bearing 9 can be adjusted to enable the connecting position of the joint bearing 9 and the connecting disc 8 to be in the middle of the connecting disc 8, and further, the effect that the transmission main shaft 4 applies force to the middle of the connecting disc 8 is achieved.

Further, referring to fig. 2 to 3, as another embodiment of the wave-activated generator provided by the present application, the number of the coil assemblies 5 is multiple, the number of the permanent magnet shafts 3 is the same as the number of the coil assemblies 5, and the permanent magnet shafts 3 correspond to the coil assemblies 5 one by one. That is, the transmission main shaft 4 can drive the coil assemblies 5 to move simultaneously when moving and is matched with the permanent magnet shaft 3 to realize power generation. It will be appreciated that the coil assembly 5 may comprise a plurality of individual coils 501 and a sleeve 502 fixedly mounting the plurality of coils 501 together, for example when the coil assembly 5 comprises more than three coils 501, the ratio of the number of coils 501 to the number of poles of the permanent magnet shaft 3 is 3:2, i.e. two poles (a pair of poles) correspond to three coils 501 (three coils 501 produce an emf phase difference of 120 degrees).

Further, referring to fig. 2-3, as another embodiment of the wave power generator provided by the present application, a plurality of coil assemblies 5 are located on the same circumference; the circle center of the circle where the coil assemblies 5 are located is located on the axis of the transmission main shaft 4. And then satisfying coil pack 5 and permanent magnet shaft 3 complex simultaneously, the axis of transmission main shaft 4 can be adjusted to the axis collineation of main body cover 1, and then has promoted the inside space utilization of main body cover 1.

Further, referring to fig. 2, as another embodiment of the wave power generator provided by the present application, the axis of the transmission main shaft 4 is collinear with the axis of the main body housing 1. That is, the transmission main shaft 4 moves along the axial direction of the main body housing 1 when moving, and is located at the most central part of the main body housing 1, so that the radial resistance received when the floating part 2 drives the transmission main shaft 4 to move and drives the coil 501 to move is ensured to be smaller.

Further, referring to fig. 1, as another specific embodiment of the wave-activated generator provided by the present application, a connecting frame 10 is provided between the transmission main shaft 4 and the floating member 2; the transmission main shaft 4 is connected with the floating part 2 through a connecting frame 10; the connecting frame 10 comprises a plurality of connecting rods 1001 arranged around the transmission main shaft 4; one end of the connecting rod 1001 is connected to the transmission main shaft 4, and the other end of the connecting rod 1001 is connected to the floating member 2. The floating part 2 can be circular, the floating part 2 is sleeved outside the main body shell 1, a connecting frame 10 is arranged between the floating part 2 and the transmission main shaft 4, the transmission main shaft 4 is still located on the axis of the main body shell 1 and moves along the axis when the transmission main shaft 4 is connected with the floating part 2, the floating part 2 can still move along the length direction of the main body shell 1, the transmission main shaft 4 or the floating part 2 does not need to be deflected to realize connection of the transmission main shaft 4 and the floating part 2, and the radial friction force along the transmission main shaft 4, which is overcome when the floating part 2 drives the transmission main shaft 4 to move, is reduced. The connecting rod 1001 may be inclined or bent to achieve the connection of the non-collinear drive shaft 4 to the floatation member 2. The connection between the transmission main shaft 4 and the connecting frame 10 can be selected to be non-rigid connection, so that the influence of assembly errors on the system is avoided.

Further, referring to fig. 4, as another embodiment of the wave power generator provided by the present application, the permanent magnet shaft 3 is a halbach array magnetic shaft. The unilateral magnetic field distribution generated by the Halbach array magnet self-shielding effect does not need a slotted structure to provide a channel for the unilateral magnetic field distribution, so that a larger selection space is provided for selecting materials for the rotor, and the system has lower inertia and better quick response performance.

Compared with a common permanent magnet structure, the Halbach array can form a magnetic field close to single-side magnetism, so that the magnetic field intensity on one side of an air gap is greatly improved, the size of the motor can be effectively reduced, and the power density is improved. In a common permanent magnet motor, because an air gap magnetic field inevitably has harmonic waves, a skewed slot is generally adopted on a stator rotor structure to weaken the influence of the air gap magnetic field. In the Halbach motor, the stator rotor does not need a chute because the sine distribution degree of an air gap magnetic field is higher and the harmonic content is low. The unilateral magnetic field distribution generated by the Halbach magnet self-shielding effect does not need a grooved structure to provide a channel for the unilateral magnetic field distribution, so that a larger selection space is provided for selecting materials for the rotor, and the system has lower inertia and better quick response performance. The air gap magnetic density of the Halbach motor can reach that of a common permanent magnet motorTherefore, the iron loss of the motor can be reduced and the starting performance of the motor can be improved by increasing the length value of the air gap. As the result of the directional magnetization of the Halbach magnet, the working point of the permanent magnet is higher and generally exceeds 0.9, and the utilization rate of the permanent magnet is improved. Common permanent magnet generators employ distributed windings to attenuate the effects of harmonic magnetic potential. Because the magnetic field sine distribution degree of the Halbach linear generator is higher, the influence of a harmonic magnetic field is smaller, the coil height can be reduced by adopting a centralized winding, and the wire filling density is improved. The air gap field of the slotless structure motor is relatively weak compared with the slotted structure motor. Due to the air-gap field of the Halbach machine, passingThe reasonably designed slotless Halbach motor can still keep higher air gap flux density.

Further, referring to fig. 2, as another specific embodiment of the wave power generator provided by the present application, a guide groove 201 is formed on the floating member 2, and a guide protrusion 102 located in the guide groove 201 is arranged on the main body housing 1; a teflon sliding sleeve 202 is arranged in the guide groove 201. The guide protrusion 102 is located in the guide groove 201, so that the floating member 2 does not rotate relative to the main body housing 1 when sliding along the main body housing 1, and only moves up and down in the vertical direction along the main body housing 1, thereby ensuring that only the transmission main shaft 4 is driven to do linear motion in the vertical direction. A teflon sliding sleeve 202 is arranged in the guide groove 201, so that self-lubrication with low friction coefficient in seawater is realized.

Further, referring to fig. 1, as another embodiment of the wave-activated generator provided by the present application, an upper sealing cover 11 and a lower sealing cover 12 are respectively disposed at two ends of the main body housing 1; a bearing fixer 13 is arranged between the linear bearing 7 and the upper closing cover 11, and the linear bearing 7 is fixedly arranged on the upper closing cover 11 through the bearing fixer 13. The linear bearing 7 adopts self-lubricating brass, so that the sliding friction force is reduced while the stability of the transmission main shaft 4 in moving is ensured.

Further, referring to fig. 1-2, as another embodiment of the wave-activated generator provided by the present application, an O-ring 14 is disposed between the linear bearing 7 and the upper sealing cover 11 to ensure that when the linear bearing 7 is mounted on the upper sealing cover 11, seawater does not enter the mounting cavity 101 through a gap between the linear bearing 7 and the upper sealing cover 11, thereby ensuring the waterproof performance of the wave-activated generator.

Further, referring to fig. 2, as another embodiment of the wave power generator provided by the present application, a double Y-shaped sealing ring 15 is disposed between the transmission main shaft 4 and the linear bearing 7. The double Y-shaped sealing rings 15 can realize better sealing of sliding objects, so that when the transmission main shaft 4 slides relative to the linear bearing 7, the double Y-shaped sealing rings 15 can seal a gap between the linear bearing 7 and the transmission main shaft 4, seawater is prevented from entering the installation cavity 101, and the waterproof performance of the wave power generator is ensured.

Further, referring to fig. 2, as another specific embodiment of the wave power generator provided by the present application, a limiting ring 103 is disposed on an outer surface of the main body housing 1, and the limiting ring 103 is located at the middle and the top of the main body housing 1; the retainer ring 103 is connected to the guide boss 102. The limiting ring 103 at the middle part can limit the downward movement position of the floating part 2, and the limiting ring 103 at the top part can limit the upward movement position of the floating part 2, so that when the wind wave is large, the floating part 2 cannot drive the coil component 5 to move downwards for a long distance through the transmission main shaft 4, and the damage of the coil component 5 is avoided.

Further, please refer to fig. 1, as another specific embodiment of the wave power generator provided in the present application, the wave power generator further includes an upper mounting plate 16 disposed in the mounting cavity 101 and a lower mounting plate 17 disposed in the mounting cavity 101; the permanent magnet shaft 3 is mounted between the upper mounting plate 16 and the lower mounting plate 17. That is, both ends of the permanent magnet shaft 3 are respectively connected with the upper mounting plate 16 and the lower mounting plate 17, so that when the wave-activated generator is assembled, the permanent magnet shaft 3, the upper mounting plate 16 and the lower mounting plate 17 can be connected and then put into the mounting cavity 101 as a whole, and meanwhile, the coil assembly 5 can be sleeved outside the permanent magnet shaft 3 and then put in, so that the difficulty of assembling the wave-activated generator is reduced.

Further, referring to fig. 3, as another embodiment of the wave power generator provided by the present application, a first spring 18 is disposed between the coil assembly 5 and the upper mounting plate 16. Because the first spring 18 is arranged between the coil assembly 5 and the upper mounting disc 16, when the coil assembly 5 moves towards the upper mounting disc 16 along with the transmission main shaft 4, rigid impact cannot occur between the coil assembly 5 and the upper mounting disc 16, the first spring 18 can be better used as buffering of the coil assembly 5 and other components, and damage to the wave power generator caused by rigid impact between the coil assembly 5 or a structure for mounting the coil assembly 5 and the upper mounting disc 16 is avoided. The floating part 2 and the transmission main shaft 4 can be connected through a connecting frame 10.

Further, referring to fig. 3, as another embodiment of the wave-power generator provided by the present application, a second spring 19 is disposed between the coil assembly 5 and the lower mounting plate 17. Because the second spring 19 is arranged between the coil assembly 5 and the lower mounting disc 17, when the coil assembly 5 moves towards the lower mounting disc 17 along with the transmission main shaft 4, rigid impact cannot occur between the coil assembly 5 and the lower mounting disc 17, the second spring 19 can be used as buffering of the coil assembly 5 and other parts, and damage to the wave power generator caused by rigid impact between the coil assembly 5 or a structure for mounting the coil assembly 5 and the lower mounting disc 17 is avoided. The floating part 2 and the transmission main shaft 4 can be connected through a connecting frame 10.

Meanwhile, after the coil assembly 5 or the structure for mounting the coil assembly 5 is in contact with the first spring 18 or the second spring 19 to compress the first spring 18 or the second spring 19, the coil assembly 5 can move by the elastic force generated when the first spring 18 or the second spring 19 is restored, so that the first spring 18 or the second spring 19 can be used as an energy storage part to drive the coil assembly 5 to resonate, the conversion rate of energy during the work of the wave-activated generator is improved on the basis of avoiding the waste of energy caused by rigid impact, and the waste of energy is avoided.

Further, referring to fig. 3, as another specific embodiment of the wave-activated generator provided by the present application, when the first spring 18 is disposed between the coil assembly 5 and the upper mounting plate 16, the first spring 18 is sleeved outside the permanent magnet shaft 3, the upper mounting plate 16 is provided with the first mounting member 20, and the first spring 18 is fixedly mounted on the upper mounting plate 16 through the first mounting member 20. The first spring 18 is sleeved outside the permanent magnet shaft 3 and is fixedly mounted on the upper mounting disc 16 through the first mounting part 20, so that the first spring 18 can deform along the axial direction of the permanent magnet shaft 3 when stressed and cannot deflect radially, and better buffering performance is provided.

Further, referring to fig. 3, as another specific embodiment of the wave-activated generator provided by the present application, when the second spring 19 is disposed between the coil assembly 5 and the lower mounting plate 17, the second spring 19 is sleeved outside the permanent magnet shaft 3, the lower mounting plate 17 is provided with the second mounting member 21, and the second spring 19 is fixedly mounted on the lower mounting plate 17 through the second mounting member 21. The second spring 19 is sleeved outside the permanent magnet shaft 3 and is fixedly mounted on the lower mounting disc 17 through the second mounting part 21, so that the second spring 19 can deform along the axial direction of the permanent magnet shaft 3 when stressed, and cannot deflect radially, and better buffering performance is provided.

It is to be understood that aspects of the present invention may be practiced otherwise than as specifically described.

It should be understood that the above examples are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. The wave power generator is characterized by comprising a main body shell with an installation cavity, a floating piece, a permanent magnet shaft, a transmission main shaft, a coil assembly and a battery pack, wherein the floating piece is slidably installed outside the main body shell; the main body shell is provided with a linear bearing, and the transmission main shaft is slidably mounted on the linear bearing; and one end of the transmission main shaft connected with the coil assembly is positioned in the mounting cavity.

2. The wave power generator as claimed in claim 1, wherein a connecting disc is provided between the transmission main shaft and the coil assembly, and the coil assembly is connected with the transmission main shaft through the connecting disc.

3. The wave power generator as claimed in claim 2, wherein a joint bearing is provided between the transmission main shaft and the connection disc; the transmission main shaft is connected with the connecting disc through the joint bearing.

4. The wave power generator as claimed in claim 2, wherein the number of the coil assemblies is plural, the number of the permanent magnet shafts is the same as the number of the coil assemblies, and the permanent magnet shafts correspond to the coil assemblies one to one.

5. The wave power generator as claimed in claim 4, wherein a plurality of the coil assemblies are located on the same circumference; the circle centers of the circumferences where the coil assemblies are located on the axis of the transmission main shaft.

6. The wave power generator as claimed in any one of claims 1-5, wherein the axis of the drive shaft is collinear with the axis of the main body housing.

7. The wave-power generator as claimed in any one of claims 1-5, characterized in that a connecting frame is provided between the drive shaft and the floating member; the transmission main shaft is connected with the floating part through the connecting frame; the connecting frame comprises a plurality of connecting rods arranged around the transmission main shaft; one end of the connecting rod is connected with the transmission main shaft, and the other end of the connecting rod is connected with the floating piece.

8. The wave power generator as claimed in any one of claims 1-5, wherein the permanent magnet axis is a Halbach array magnetic axis.

9. The wave power generator as claimed in any one of claims 1 to 5, wherein the floating member is provided with a guide groove, and the main body housing is provided with a guide projection positioned in the guide groove; a Teflon sliding sleeve is arranged in the guide groove.

10. The wave power generator as claimed in claim 1, wherein the main body housing is provided at both ends thereof with an upper closing cover and a lower closing cover, respectively; and a bearing fixer is arranged between the linear bearing and the upper closing cover, and the linear bearing is fixedly arranged on the upper closing cover through the bearing fixer.

11. The wave power generator as claimed in claim 10, wherein an O-ring seal is provided between the linear bearing and the upper closure cap.

12. A wave-power generator according to claim 1 or 10, characterized in that a double Y-seal is provided between the transmission main shaft and the linear bearing.

13. The wave power generator as claimed in claim 9, wherein the outer surface of the main body housing is provided with a limiting ring, and the limiting ring is located at the middle part and the top part of the main body housing; the limiting ring is connected with the guide bulge.

14. The wave power generator as claimed in any one of claims 1-5, further comprising an upper mounting plate disposed within the mounting cavity and a lower mounting plate disposed within the mounting cavity; the permanent magnet shaft is arranged between the upper mounting disc and the lower mounting disc, and the permanent magnet shaft, the upper mounting disc and the lower mounting disc are assembled into a whole.

15. The wave generator as claimed in claim 14, wherein a first spring is provided between the coil assembly and the upper mounting plate;

16. The wave power generator as claimed in claim 15, wherein when the first spring is disposed between the coil assembly and the upper mounting plate, the first spring is sleeved outside the permanent magnet shaft, and a first mounting member is disposed on the upper mounting plate, and the first spring is fixedly mounted on the upper mounting plate through the first mounting member.

17. The wave power generator as claimed in claim 15, wherein when the second spring is disposed between the coil assembly and the lower mounting plate, the second spring is sleeved outside the permanent magnet shaft, and a second mounting member is disposed on the lower mounting plate, and the second spring is fixedly mounted on the lower mounting plate through the second mounting member.