CN112994590A

CN112994590A - Portable double-shaft tracking high-efficiency photovoltaic power generation equipment

Info

Publication number: CN112994590A
Application number: CN202110295467.3A
Authority: CN
Inventors: 滕明; 倪加乐
Original assignee: Jiangsu Qijing Optoelectronics Technology Co ltd
Current assignee: Jiangsu Qijing Optoelectronics Technology Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-06-18

Abstract

The invention discloses portable double-shaft tracking high-efficiency photovoltaic power generation equipment, which comprises photovoltaic components which are mutually connected in a foldable and movable manner through a connecting hinge, wherein the photovoltaic components are movably connected with a case through a supporting hinge and can realize high-low angle tracking by a high-low angle tracking motor through a screw and nut driving connecting rod; the bottom of the case is provided with a fixed caster and two movable casters, the fixed caster can be rotatably supported on the combined base plate through a caster clamping seat, the two movable casters can be positioned on the annular track on the combined base plate, a limiting and fixing device is arranged between a caster bracket of one movable caster and the case, and a wheel disc of the movable caster can be driven by an azimuth tracking motor to realize azimuth tracking; the detachable light following sensing device is arranged on the photovoltaic module, and all the parts can be accommodated or placed on the case to form a box-shaped body pushed by the casters. By adopting the power generation equipment, the carrying is convenient, the installation is convenient, the double-shaft tracking of the sun position can be realized, and the power generation efficiency is high.

Description

Portable double-shaft tracking high-efficiency photovoltaic power generation equipment

Technical Field

The invention relates to photovoltaic power generation equipment, in particular to independent photovoltaic power generation equipment.

Background

The independent photovoltaic power generation equipment is a power generation equipment which generates electric energy by utilizing sunlight irradiation, compared with a grid-connected photovoltaic power generation equipment which can be merged into a power grid, the independent photovoltaic power generation equipment mostly needs to store the generated energy through an energy storage battery so as to provide stable electric energy for the power utilization equipment in the daytime with insufficient sunlight and at night without sunlight, the independent photovoltaic power generation equipment is particularly suitable for remote areas which cannot be covered by the power grid, the common independent photovoltaic power generation equipment has the photovoltaic components which are arranged on photovoltaic supports fixedly supported on the ground to generate power in fixed places, in order to improve the power generation efficiency, the independent photovoltaic system can be the same as the grid-connected photovoltaic power generation system, and adopts the photovoltaic supports which can track the position of the sun in a single shaft or double shafts, so that the light receiving surface of the photovoltaic components can be kept vertical to the sunlight as much as possible along with the change of the position of the sun, the sunlight irradiation energy received by the photovoltaic module is greatly improved, and the generated energy is correspondingly improved. However, for the field operation places where the work place needs to be changed frequently, emergency relief and other use occasions, the photovoltaic power generation equipment needs to be portable, small in occupied size in the transportation process, high in power generation efficiency and fast in field installation, and in the face of the requirements, the common independent photovoltaic power generation equipment is not applicable, and the double-axis tracking of the solar position is required to be achieved on the basis, so that the double-axis tracking is difficult to achieve.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a portable double-shaft tracking high-efficiency photovoltaic power generation device which is convenient to carry and install, can realize double-shaft tracking of the position of the sun and has high power generation efficiency.

In order to solve the technical problems, the portable double-shaft tracking high-efficiency photovoltaic power generation equipment comprises photovoltaic components and an energy storage battery, wherein the photovoltaic components are connected in a foldable and movable mode through connecting hinges, one photovoltaic component is movably connected with a case through a supporting hinge, each folded photovoltaic component is positioned on the upper side face of the case, the length and the width of the upper side face of the case correspond to those of the photovoltaic components, a supporting rod is detachably arranged on the back face of each unfolded photovoltaic component, a connecting rod is hinged to the supporting rod, a screw rod is rotatably supported on the case, the other end of the connecting rod is hinged to a nut in screwed connection with the screw rod, and the screw rod is in transmission connection with a high-low angle tracking motor; a fixed caster and two movable casters are arranged at the bottom of the case, a limiting and fixing device is arranged between a caster bracket of one movable caster and the case, an azimuth tracking motor is supported on the caster bracket of the movable caster, and the azimuth tracking motor is in transmission connection with a wheel disc of the movable caster; the bottom of the fixed caster and the bottom of the movable caster are provided with a combined base plate, the fixed caster can be supported on the combined base plate in a rotating way along the vertical direction through a caster clamping seat, the combined base plate is provided with an annular track, the center of a circular ring of the annular track is positioned on a rotating axis between the caster clamping seat and the combined base plate, and the two movable casters are positioned on the annular track; the light tracking sensing device comprises a substrate, a shading column perpendicular to the substrate is arranged in the middle of the front side of the substrate, a plurality of strip-shaped photovoltaic cell pieces are packaged on the front side of the substrate, the photovoltaic cell pieces are radially and uniformly distributed on the periphery of the shading column, the photovoltaic cell pieces are arranged into at least one circle on the periphery of the shading column, the circle center of a circle where the photovoltaic cell pieces arranged into a circle are located is located on the axis of the shading column, two ends of each photovoltaic cell piece are electrically connected with a control panel through a flow guide strip, the substrate is connected with the photovoltaic module through an installation connecting seat, and the front side of the substrate is parallel to the light receiving surface of the photovoltaic module; the light tracking sensing device, the high-low angle tracking motor and the azimuth angle tracking motor are all electrically connected with the control device, the control device and the energy storage battery are all installed in the case, the energy storage battery is respectively electrically connected with the photovoltaic assembly, the high-low angle tracking motor, the azimuth angle tracking motor and the control device, a direct current output interface connected with the energy storage battery is arranged on the case, an inverter is further arranged in the case and electrically connected with the energy storage battery, and an alternating current output interface connected with the output end of the inverter is arranged on the case.

In the structure, because the photovoltaic modules are mutually connected in a foldable and movable manner through the connecting hinges, one photovoltaic module is movably connected with the case through the supporting hinges, the folded photovoltaic modules are positioned on the upper side surface of the case, the length and width of the upper side surface of the case correspond to the length and width of the photovoltaic modules, the back surface of each unfolded photovoltaic module is detachably provided with the supporting rod, the supporting rod is hinged with the connecting rod, the case is rotatably supported with the screw rod, the other end of the connecting rod is hinged with the nut which is screwed with the screw rod, and the screw rod is in transmission connection with the high-low angle tracking motor, so that the plurality of photovoltaic modules can enable the power generation equipment to have higher power installation capacity, the mutual hinges of the photovoltaic modules can be mutually overlapped after being folded and are convenient to carry, the photovoltaic modules can rotate around the supporting hinges, and can be flatly placed on the upper side surface of the case after being folded so as to meet the, the support rod is hinged with the nut on the screw rod through the connecting rod, so that each photovoltaic module can change the installation angle around the support hinge along with the displacement of the nut on the screw rod, and the high-low angle tracking motor can realize the position tracking of the sun in the high-low direction through the displacement of the nut driven by the screw rod in the power generation process, thereby improving the power generation efficiency; the support rod can be detached from the photovoltaic component, and the connecting rod hinged with the support rod and the nut can also be detached and placed on or in the case, so that the photovoltaic component support is convenient to carry and mount.

The bottom of the case is provided with a fixed caster and two movable casters, a limit fixing device is arranged between a caster bracket of one movable caster and the case, an azimuth tracking motor is supported on the caster bracket of the movable caster, and the azimuth tracking motor is in transmission connection with a wheel disc of the movable caster; the bottom of the fixed caster and the bottom of the movable caster are provided with a combined base plate, the fixed caster can be rotatably supported on the combined base plate along the vertical direction through a caster clamping seat, the combined base plate is provided with an annular track, the center of a ring of the annular track is positioned on a rotating axis between the caster clamping seat and the combined base plate, the two movable casters are positioned on the annular track, the case and a photovoltaic component on the case can be conveniently moved through the fixed caster and the two movable casters, so that the case can be conveniently moved to a power generation working position with good light, the movable caster can be converted into the fixed caster through a limiting and fixing device arranged between the caster bracket of the movable caster and the case, and the axis of the wheel disc of the movable caster can point to the rotating axis between the caster clamping seat of the fixed caster and the combined base plate along the vertical direction, thus, an azimuth angle tracking motor arranged on the caster bracket of the movable caster can drive the wheel disc of the movable caster to, the whole case rotates around a rotating axis in the vertical direction between the caster clamping seat and the combined base plate at the fixed caster at a power generation working site, and the photovoltaic module on the case correspondingly rotates along with the rotating axis, so that the azimuth angle in the left and right directions of the photovoltaic module can be changed, the tracking of the azimuth angle of the position of the sun is realized, and the photovoltaic module has higher power generation efficiency; in a non-power-generation working state, the limiting fixing device can remove the limiting of the corresponding movable caster to enable the movable caster to move freely so as to enable the case and the photovoltaic module on the case to move conveniently, and the caster clamping seat, the combined base plate and the annular rail can be placed in the case or on the case and are convenient to carry.

The light tracking sensing device is detachably arranged on the photovoltaic module and comprises a substrate, a shading column perpendicular to the substrate is arranged in the middle of the front face of the substrate, a plurality of strip-shaped photovoltaic cell pieces are packaged on the front face of the substrate, the photovoltaic cell pieces are radially and uniformly distributed on the periphery of the shading column, the photovoltaic cell pieces are arranged into at least one circle on the periphery of the shading column, the circle center of the circle in which the photovoltaic cell pieces are arranged into the circle is positioned on the axis of the shading column, two ends of each photovoltaic cell piece are electrically connected with the control panel through the flow guide strips, the substrate is connected with the photovoltaic module through the mounting and connecting seat, the front face of the substrate is parallel to the light receiving face of the photovoltaic module, the arranged light tracking sensing device can be mounted on the photovoltaic module in the power generation process to sense the change of the position of the sun, and each strip-shaped photovoltaic cell piece on the substrate can generate electric energy under the irradiation of, when the solar ray is not perpendicular to the front surface of the substrate, the shading column will generate a shadow on the substrate, the shadow will inevitably shade the photovoltaic cells under the shadow and cannot normally generate electric energy, the control panel can identify the condition of the electric energy generated by each photovoltaic cell, thereby judging the position of the sun which deviates to the shading column, and judging the offset degree of the position of the sun according to the number of turns from inside to outside of the shaded photovoltaic cell, thereby having higher sensing precision on the omnibearing change of the position of the sun, such as high, low, left and right, being convenient for the control device to accurately determine the position angle of the photovoltaic module to be adjusted, and the solar tracking device is adjusted by the high-low angle tracking motor and the azimuth angle tracking motor according to the solar tracking device until all the photovoltaic cells on the substrate are not shaded to normally generate electric energy, so that the reliable realization of the solar position double-axis tracking can be ensured.

Furthermore, the light tracking sensing device, the altitude and depression tracking motor and the azimuth tracking motor are all electrically connected with the control device, the control device and the energy storage battery are all arranged in the case, the energy storage battery is respectively electrically connected with the photovoltaic component, the altitude and depression tracking motor, the azimuth tracking motor and the control device, a direct current output interface connected with the energy storage battery is arranged on the case, an inverter is also arranged in the case and electrically connected with the energy storage battery, an alternating current output interface connected with the output end of the inverter is arranged on the case, the altitude and depression tracking motor and the azimuth tracking motor can be regulated and controlled to operate timely according to the change of the sun position sensed by the light tracking sensing device through the control device so as to realize the omnibearing tracking of the sun position, and the light tracking sensing device can be detachably arranged in the case when the power generation equipment needs to be transported and moved so as to be convenient to carry, the installation is convenient; the electric energy generated by the photovoltaic module is stored in the energy storage battery, so that the electric energy supply of the high-low angle tracking motor, the azimuth angle tracking motor and the control device can be ensured, the direct current load can be supplied with power to the external direct current load from the direct current output interface at any time, the alternating current can be converted into the alternating current through the inverter, the alternating current load is supplied with power from the alternating current output interface, and the use is convenient.

In a preferred embodiment of the present invention, the number of the photovoltaic modules is three, the middle photovoltaic module is movably connected to the chassis through a support hinge, the left and right photovoltaic modules are respectively and movably connected to the middle photovoltaic module through a connection hinge, and hinge axes of the two connection hinges are respectively located at upper and lower sides of two adjacent photovoltaic modules. By adopting the embodiment, the photovoltaic modules can be ensured to be mutually overlapped after being folded and to be uniformly loaded relative to the left and right of the case after being unfolded, and the hinge axes of the two connecting hinges are respectively positioned at the upper side and the lower side of the two adjacent photovoltaic modules, so that the upper side and the lower side of the middle photovoltaic module are respectively overlapped after the left photovoltaic module and the right photovoltaic module are folded.

In another preferred embodiment of the present invention, the supporting rods are respectively disposed on the left and right sides, the supporting rod on each side is attached to the back of the assembly frame of the photovoltaic assembly on the corresponding side and the back of the assembly frame of the adjacent side of the adjacent photovoltaic assembly, a supporting slot is disposed on each supporting rod, the supporting slot is inserted and connected to the lower folded edge of the assembly frame of the photovoltaic assembly on the corresponding side, and the supporting rod on each side is hinged to a connecting rod. By adopting the embodiment, the supporting rod is divided into two parts, the length of the supporting rod can be shortened to be smaller than the length of the diagonal direction of the inner cavity of the case, the supporting rod can be placed in the case and can support the photovoltaic component on the corresponding side and one side edge of the photovoltaic component adjacent to the photovoltaic component through the connecting rod, the supporting requirement on the photovoltaic component can be met, and the supporting clamping groove on the supporting rod can enable the supporting rod to be relatively connected with the component frame of the photovoltaic component and is convenient to detach.

In another preferred embodiment of the present invention, the number of the screws is two, the two screws are respectively and rotatably supported on two opposite side surfaces of the chassis, a nut screwed on each side of the screw is hinged with a corresponding connecting rod hinged on the support rod, a worm wheel is fixedly connected to the lower end of the screw, two worms meshed with the two worm wheels are mounted on the same worm shaft, the two screws are in transmission connection with the high-low angle tracking motor through a corresponding worm gear pair and worm shaft, and the high-low angle tracking motor is mounted on the chassis. By adopting the embodiment, the corresponding screw rods of the support rods on each side are supported and driven by the nuts and the connecting rods, and the screws on the two sides are driven by the same high-low angle tracking motor, so that the support rods on the two sides can be ensured to move coordinately and consistently during swing tracking, and all photovoltaic modules can move simultaneously to realize tracking of the position of the sun.

In a further preferred embodiment of the present invention, the limiting fixing device includes a movable latch installed on the chassis, and the movable latch can be connected to the caster bracket of the movable caster in an inserting manner. Adopt this embodiment, spacing fixing device simple structure, spacing connection is convenient, only need to carry out the position that can inject the activity truckle with bolt and activity truckle's truckle support plug-in connection when needs are spacing fixed to the activity truckle, the axis of the axis directional fixed truckle department truckle cassette of its rim plate and the rotation axis of vertical direction between the combination backing plate, the activity truckle is transformed into the truckle, when needs are with the power generating equipment shift position, extract the bolt and can conveniently resume the movable function of activity truckle, the transportation of the quick-witted case of being convenient for and the bearing member is removed.

In another preferred embodiment of the present invention, the combined mat comprises a rectangular middle plate and four side plates hinged to four sides of the middle plate, and the combined mat can be folded into a box cover shape to cover the folded photovoltaic module which is laid on the upper side of the chassis. By adopting the embodiment, on one hand, a relatively flat supporting surface can be provided for the tracking motion of the case by utilizing the combined base plate, on the other hand, the combined base plate can be folded to form the component cover cap to protect the photovoltaic component in the non-power generation state of the power generation equipment, and meanwhile, the combined base plate is convenient to store, transport and carry.

In a further preferred embodiment of the present invention, a rail card slot is provided at a rear side of the chassis, and the ring-shaped rail may be placed in the rail card slot. By adopting the embodiment, the annular track can be conveniently stored and carried.

According to a further preferable embodiment of the invention, the photovoltaic cell pieces are arranged in two to four circles on the periphery of the shading column from inside to outside, 12-36 photovoltaic cell pieces are distributed in each circle, and the number of the photovoltaic cell pieces positioned on the outer circle in two adjacent circles of the photovoltaic cell pieces is greater than or equal to the number of the photovoltaic cell pieces positioned on the inner circle. By adopting the embodiment, the resolving power for sensing the change of the sun height, left azimuth and right azimuth can be improved, and the precision requirement for sensing the omnibearing change of the sun position can be met.

In another further preferred embodiment of the present invention, the mounting and connecting base includes a clamping base body, the clamping base body is in a square shape, component clamping grooves corresponding to component frames of the photovoltaic components are respectively formed in inner sides of two sides of the square-shaped clamping base body, a clamping block is arranged on one side of the clamping base body, the clamping block is fixedly connected to the clamping base body in an inserting manner, two clamping grooves are formed in the clamping block, the two clamping grooves are respectively opposite to inner sides of two sides of the clamping base body, and inner side walls of the clamping grooves are inserted into the corresponding component clamping grooves. By adopting the embodiment, the installation connecting seat is spliced with the frame corner of the photovoltaic module through the module clamping groove on the clamping seat body, and then the clamping block is spliced with the clamping seat body, the inner side walls of the two clamping grooves on the clamping block are inserted into the corresponding module clamping grooves, so that the lower folded edges of the two side module frames at the corner and the side wall card of the module clamping groove between the lower folded edge of the module frame and the outer side wall of the clamping groove are inserted into the corresponding clamping grooves, the installation connecting seat and the module frame are fixedly connected through the clamping block spliced in the clamping seat body, when the assembly connecting seat is required to be disassembled, only the clamping block needs to be extracted, and the installation and the disassembly are very convenient.

In a further preferred embodiment of the present invention, a clamping block insertion slot is formed on one side of the clamping seat body, and an elastic clamping jaw is arranged on the clamping block and is fixedly connected with the clamping block insertion slot in an insertion manner. By adopting the embodiment, the elastic clamping claw is inserted into the insertion clamping groove of the clamping block, the insertion and the disassembly of the clamping block are very convenient, and after the elastic clamping claw is inserted into the insertion clamping groove of the clamping block, the barb at the head part of the clamping claw can ensure that the clamping block is fixedly connected with the clamping seat body.

Drawings

The portable double-shaft tracking high-efficiency photovoltaic power generation equipment is further described in detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic perspective view of one embodiment of a portable dual-axis tracking high-efficiency photovoltaic power generation apparatus of the present invention;

FIG. 2 is a front view of the structure shown in FIG. 1;

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is a right side view of FIG. 3;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 6 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 7 is a cross-sectional view taken at the location C-C in FIG. 3;

FIG. 8 is a cross-sectional view taken at D-D of FIG. 4;

FIG. 9 is a schematic view of the construction of the composite backing plate of the construction of FIG. 1;

FIG. 10 is a cross-sectional view taken at E-E in FIG. 5;

FIG. 11 is a schematic view of the construction of the caster bracket and associated components of the F-F portion of FIG. 5;

FIG. 12 is a schematic diagram of the structure of the light tracking sensor device in the structure of FIG. 1;

FIG. 13 is a schematic view of the connection between the light tracking sensor device shown in FIG. 12 and a photovoltaic module;

FIG. 14 is a left side view of the light following sensing device of FIG. 13;

FIG. 15 is a left side view of FIG. 14;

fig. 16 is a schematic diagram of a layout of photovoltaic cells in the structure shown in fig. 12.

In the figure: 1-light-following sensing device, 2-photovoltaic component, 3-component frame, 4-connecting rod, 5-connecting hinge, 6-supporting hinge, 7-case, 8-limiting fixing device, 9-movable caster, 10-azimuth tracking motor, 11-fixed caster, 12-caster clamping seat, 13-combined backing plate, 14-annular track, 15-supporting rod, 16-track clamping groove, 17-nut, 18-screw, 19-worm, 20-worm shaft, 21-worm gear, 22-high-low angle tracking motor, 23-energy storage battery, 24-clapboard, 25-inverter, 26-control device, 27-case cover, 28-supporting clamping groove block, 29-supporting clamping groove, 30-intermediate plate, 31-side plate, 32-caster bracket, 33-movable bolt, 34-base plate, 35-shading column, 36-photovoltaic cell, 37-control plate, 38-shield, 39-installation connecting seat, 40-clamping seat body, 41-component clamping groove, 42-clamping groove, 43-clamping block, 44-clamping block inserting clamping groove and 45-elastic clamping claw.

Detailed Description

In the portable two-axis tracking high-efficiency photovoltaic power generation apparatus shown in fig. 1 and 2, the casing 7 is a rectangular parallelepiped box-shaped member, the length and width of the upper side surface of the photovoltaic module 2 correspond to the length and width of the photovoltaic module 2, the photovoltaic modules 2 are connected with each other in a foldable and movable way through a connecting hinge 5, one photovoltaic module 2 is movably connected with a case 7 through a supporting hinge 6, as an optimal implementation mode, the number of the photovoltaic modules 2 is three, the middle photovoltaic module 2 is movably connected with the case 7 through the supporting hinge 6 at the lower side of a module frame 3, the left photovoltaic module 2 and the right photovoltaic module 2 are respectively connected with the left module frame 3 and the right module frame 3 of the middle photovoltaic module 2 in a foldable and movable mode through connecting hinges 5, hinge axes of the two connecting hinges 5 are respectively positioned at the upper side and the lower side of the two adjacent photovoltaic modules 2, and the folded photovoltaic modules 2 can be mutually overlapped and flatly placed on the upper side face of the case 7.

Referring to fig. 3 and 4, the unfolded photovoltaic modules 2 are located on the same plane, a support rod 15 is detachably disposed on the back of each unfolded photovoltaic module 2, a connecting rod 4 is hinged to the support rod 15, a screw 18 is rotatably supported on the case 7, the other end of the connecting rod 4 is hinged to a nut 17 rotatably connected to the screw 18, and the screw 18 is in transmission connection with a high-low angle tracking motor 22. As a preferred embodiment, referring to fig. 5, 6, 7 and 8, the support rods 15 are respectively arranged at the left and right sides, the support rod 15 at each side is attached to the back surface of the module frame 3 of the corresponding photovoltaic module 2 and the back surface of the module frame 3 of the adjacent photovoltaic module 2, a support slot 29 is arranged on the support rod 15 through a support slot block 28, as shown in fig. 8, the support slot block 28 is fixedly connected to the support rod 15, two support slot blocks 28 are fixedly connected to the support rod 15 at each side, the support slot 29 is arranged at the upper end of the support slot block 28, the support slot 29 is connected with the lower folded edge card of the module frame 3 above the corresponding photovoltaic module 2, so that the support rod 15 is connected with the photovoltaic module 2 under the support of the connecting rod 4, the support rod 15 can be conveniently detached from the photovoltaic module 2, and the length thereof is smaller than the length of the diagonal direction of the inner cavity of the case 7, the detached support rod 15 can be placed in the case 7; the connecting rod 4 is hinged to the supporting rod 15 on each side, as shown in fig. 4 and 7, the connecting rod 4 is formed by combining a straight connecting rod and an inclined connecting rod, the straight connecting rod is parallel to the left side and the right side of the case 7, openings at two ends of the straight connecting rod are respectively sleeved and hinged to the supporting rod 15 and a nut 17, the connecting rod is convenient to assemble and disassemble, an opening at one end of the inclined connecting rod is sleeved and hinged to the supporting rod 15, a hinge axis between the inclined connecting rod and the supporting rod 15 is located on the hinge axis between the straight connecting rod and the supporting rod 15, the other end of the inclined connecting rod is inserted into a clamping groove formed in the straight connecting rod, the overhanging ends of the left photovoltaic module 2 and the right photovoltaic module 2 can be supported through the inclined connecting rod, the working stability of the inclined connecting rod is guaranteed, the inclined connecting rod is also convenient to assemble and disassemble, the lengths of the straight connecting rod and the inclined; as shown in fig. 5 and 6, two screw rods 18 are provided, the two screw rods 18 are respectively rotatably supported on the left and right opposite side surfaces of the case 7 through screw rod supports at both ends, the two screw rods 18 are vertically arranged, a nut 17 screwed on each screw rod 18 is hinged with a straight link rod in the link rod 4 hinged on the support rod 15, the nut 17 is in a square block shape, a pin shaft hinged with the link rod 4 is arranged on the outer side of the nut 17, a guide boss is arranged on the inner side of the nut 17, the guide boss is in sliding fit with a guide groove on a guide block arranged between the upper and lower screw rod supports, a worm wheel 21 is fixedly connected with the lower end of the screw rod 18, two worm rods 19 meshed with the two worm wheels 21 are arranged on the same shaft 20, the worm shaft 20 penetrates through the case 7, a partition plate 24 is arranged in the case 7, the worm shaft 20 is arranged between the partition plate 24 and the rear side wall of the case 7, the two screw rods 18 are in transmission connection with a high-low, the high-low angle tracking motor 22 shown in the figure is in transmission connection with the worm shaft through a gear pair, and of course, the high-low angle tracking motor 22 may also be in transmission connection through a toothed belt transmission pair or a worm gear transmission pair, and the like, and is installed on the chassis 7.

Referring to fig. 3 and 5, a fixed caster 11 and two movable casters 9 are mounted at the bottom of the chassis 7, and a combined mat 13 is disposed at the bottoms of the fixed caster 11 and the movable casters 9, as shown in fig. 9, the combined mat 13 includes a rectangular middle plate 30 and four side plates 31 hinged to four sides of the middle plate 30, the length and width of the middle plate 30 are greater than those of the photovoltaic module 2, and the lengths of the four side plates 31 correspond to the side lengths of the connected middle plate 30; the fixed caster 11 can be supported on the combined base plate 13 in a vertical direction through the caster clamping seat 12 in a rotating manner, as shown in fig. 10, the upper part of the caster clamping seat 12 is provided with an arc groove corresponding to the wheel disc of the fixed caster 11, the wheel disc of the fixed caster 11 can be clamped in the arc groove, and the lower part of the caster clamping seat 12 is matched with the combined base plate 13 through a pin hole of a pin shaft, so that the fixed caster 11 can be supported on the combined base plate 13 in a rotating manner through the caster clamping seat 12 in a vertical direction; an annular rail 14 is arranged on the combined backing plate 13, the center of the ring of the annular rail 14 is positioned on a rotating axis between the caster clamping seat 12 and the combined backing plate 13, the bottom of the annular rail 14 is provided with a concave groove which is clamped with the combined backing plate 13, so that the bottom surface of the annular rail 14 and the bottom surface of the assembly backing plate 13 are positioned on the same plane to be supported on the ground, the annular rail 14 is stably supported, the positioning of the center of the ring of the annular rail 14 is also convenient to ensure, and the two movable casters 9 are positioned on the annular rail 14.

Referring to fig. 11, the spacing fixing device 8 is arranged between the caster bracket 32 of a movable caster 9 and the case 7, the azimuth tracking motor 10 is supported on the caster bracket 32 of the movable caster 9, and the azimuth tracking motor 10 is in transmission connection with the wheel of the movable caster 9. In a preferred embodiment, the position-limiting fixing device 8 includes a movable pin 33 mounted on the chassis 7 through a pin base, a positioning pin is disposed on the movable pin 33 in a direction perpendicular to the axis, two positioning slots having different depths are disposed on the pin base, when the positioning pin is located in a deeper positioning slot (as shown in fig. 11), the movable pin 33 is inserted into the pin slot of the caster bracket 32 of the movable caster 9, so that the movable caster 9 is limited in the circumferential direction of the vertical rotation axis of the caster bracket 32 to become a fixed caster, the axis of the wheel disc points to the rotation axis between the caster seat 12 and the composite pad 13 in the vertical direction, under the control of the control device 26, the azimuth tracking motor 10 operates to rotate the wheel disc of the movable caster 9, and the entire chassis 7 rotates around the rotation axis between the caster seat 12 and the composite pad 13 in the vertical direction by a certain angle, therefore, the left azimuth angle and the right azimuth angle of the sun can be tracked, and the power generation efficiency is improved; when the positioning pin is located in the shallow positioning groove, the movable latch 33 will be out of contact with the latch groove on the caster bracket 32 of the movable caster 9, the caster bracket 32 is no longer restricted, the movable caster 9 can move freely, and the case 7 can be conveniently moved to a desired position under the support of the fixed caster 11 and the two movable casters 9.

The light tracking sensing device 1 is detachably arranged on a photovoltaic module 2, referring to fig. 12 and 13, the light tracking sensing device 1 comprises a substrate 34, the substrate 34 is connected with the photovoltaic module 2 through a mounting and connecting seat 39, the front surface of the substrate 34 is parallel to the light receiving surface of the photovoltaic module 2, the upper part of the substrate 34 is semicircular, the lower part of the substrate 34 is rectangular, a cylindrical shading column 35 vertical to the substrate 34 is arranged in the middle of the front surface of the substrate 34, the axis of the shading column 35 passes through the center of the semicircular upper part of the substrate 34, a plurality of strip-shaped photovoltaic cell sheets 36 are packaged on the front surface of the substrate 34, the width of the strip-shaped photovoltaic cell sheets 36 corresponds to the diameter of the shading column 35, preferably is slightly larger than the diameter of the shading column 35, the photovoltaic cell sheets 36 are fixedly connected on the substrate 34 through a glass panel, an EVA and a back plate in an encapsulating way, the photovoltaic cell sheets 36 are radially and uniformly distributed on the periphery of the shading column, the circle center of the circle where each photovoltaic cell piece 36 is arranged in a circle is located on the axis of the shading column 35, as a preferred embodiment, each photovoltaic cell piece 36 is arranged in two to four circles from inside to outside on the periphery of the shading column 35, 12-36 pieces are distributed in each circle, the number of the photovoltaic cell pieces 36 located on the outer circle in two adjacent circles of the photovoltaic cell pieces 36 is larger than or equal to the number of the photovoltaic cell pieces 36 located on the inner circle, fig. 16 shows a layout embodiment of the photovoltaic cell pieces 36, each photovoltaic cell piece 36 is arranged in two circles from inside to outside on the periphery of the

shading column

35, 12 pieces are distributed on the inner circle, and 24 pieces are distributed on the outer circle; two ends of each photovoltaic cell 36 penetrate through the substrate 34 through the thin-strip-shaped copper diversion strips to be electrically connected with the control panel 37, the control panel 37 is positioned on the back of the substrate 34, and the light tracking sensing device 1 is electrically connected with the control device 26 through the control panel 37; the front surface of the substrate 34 is provided with a protective cover 38, the protective cover 38 is made of opaque material into a cylindrical shape, and the cylinder wall of the protective cover 38 is positioned at the periphery of the photovoltaic cell 36, so that on one hand, the front surface of the substrate 34 can be protected, and on the other hand, the interference of non-sunlight to the photovoltaic cell 36 on the substrate 34 can be avoided.

The photovoltaic cell pieces 36 may also be arranged as shown in fig. 13, each photovoltaic cell piece 36 is arranged in two circles from inside to outside at the periphery of the shading column 35, the length of the photovoltaic cell piece 36 at the inner circle is greater than the length of the photovoltaic cell piece 36 at the outer circle, each photovoltaic cell piece 36 at the outer circle is uniformly distributed between two adjacent photovoltaic cell pieces 36 at the inner circle, the diameter of the distribution circle where the inner end of each photovoltaic cell piece 36 at the outer circle is located is greater than the diameter of the distribution circle where the inner end of each photovoltaic cell piece 36 at the inner circle is located, and the diameter of the distribution circle where the outer end of each photovoltaic cell piece 36 at the outer circle is located is equal to the diameter of the distribution circle where the outer end of each photovoltaic cell piece 36 at the inner circle is located.

The mounting and connecting seat 39 comprises a clamping seat body 40, the clamping seat body 40 is in an angle square shape, component clamping grooves 41 corresponding to the component frame 3 of the photovoltaic component 2 are respectively arranged on the inner sides of two sides of the angle square-shaped clamping seat body 40, a clamping block 43 is arranged on one side of the clamping seat body 40, the clamping block 43 is fixedly connected to the clamping seat body 40 in an inserting mode, furthermore, the inserting direction of the clamping block 43 and the clamping seat body 40 is parallel to an angular bisector of an included angle of the two sides of the angle square-shaped clamping seat body 40, a clamping block inserting clamping groove 44 is arranged on one side of the clamping seat body 40, an elastic clamping jaw 45 is arranged on the clamping block 43, the elastic clamping jaw 45 is fixedly connected with the clamping block inserting clamping groove 44 in an inserting mode, and therefore the clamping block 43 is fixedly connected to the clamping seat body 40; two clamping grooves 42 are formed in the clamping block 43, the two clamping grooves 42 are respectively opposite to the inner sides of the two sides of the clamping base body 40, the side walls of the inner sides of the clamping grooves 42 are inserted into the corresponding component clamping grooves 41, the lower folded edges of the component frames 3 on the two sides of the corner of the photovoltaic component 2 and the side walls of the component clamping grooves 41 between the lower folded edges of the component frames 3 and the side walls of the outer sides of the clamping grooves 42 are clamped in the corresponding clamping grooves 42, so that the mounting and connecting base 39 and the component frames 3 of the photovoltaic component 2 are fixedly connected through the clamping block 43, the light tracking sensing device 1 can be conveniently detached from the photovoltaic component 2 by pulling out and detaching the clamping block 43, the mounting and connecting are convenient, and the detached light tracking sensing device 1 can be placed in the case 7 and is convenient to.

The light tracking sensing device 1, the high-low angle tracking motor 22 and the azimuth tracking motor 10 are all electrically connected to a control device 26, as shown in fig. 5, the control device 26 and the energy storage battery 23 are all installed in the case 7, the energy storage battery 23 is respectively electrically connected to the photovoltaic module 2, the high-low angle tracking motor 22, the azimuth tracking motor 10 and the control device 26, the high-low angle tracking motor 22 and the azimuth tracking motor 10 adopt a dc stepping motor or a dc servo motor, driving power of the dc stepping motor is provided by the energy storage battery 23, a dc output interface (not shown) connected to the energy storage battery 23 is arranged on the case 7, an inverter 25 is further arranged in the case 7, the inverter 25 is electrically connected to the energy storage battery 23, and an ac output interface (not shown) connected to an output end of the inverter 25 is arranged on the case 7.

As shown in fig. 6, a cover 27 is disposed on the upper side of the case 7, the cover 27 can be opened to accommodate the related components such as the light tracking sensing device 1, the connecting rod 4 (including a straight connecting rod and an inclined connecting rod, which can be disassembled), the support rod 15 and the caster wheel holder 12, the combined mat 13 can be folded into a cover shape to be folded to be overlapped with each other and placed on the photovoltaic module 2 on the upper side of the case 7, and the four sides are fixed by hasps or simply by strapping tapes, so that the accommodating problem of the combined mat can be solved, the transportation and the carrying are convenient, and the photovoltaic module 2 can be protected in the non-working state of the power generation equipment; as shown in fig. 4 and 5, a rail receiving groove 16 is provided on the rear side of the casing 7, and the circular rail 14 can be placed in the rail receiving groove 16 and also serve as a push handle when the entire box-shaped power generating equipment is moved. Therefore, when the power generation equipment does not enter the working state, all the parts can be contained in the case 7 or placed on the case 7, and the whole power generation equipment is in a box shape and can be conveniently pushed through the trundles.

The above only illustrates some preferred embodiments of the present invention, but the present invention is not limited thereto and many modifications and changes can be made. If the support rods 15 are not separately arranged on the left and right sides, but can be one corresponding to the length of each photovoltaic module 2 after being unfolded, the support rods 15 corresponding to the length of the photovoltaic modules 2 after being unfolded are divided into three parts, namely a left part, a middle part and a right part, and the three parts are connected through hinges, so that the support rods can be folded after being detached, and the length after being folded is smaller than the length between opposite angles of the inner cavity of the case 7, so that the support rods are convenient to store; the limiting fixing device 8 may not include a movable pin 33 which is installed on the case 7 through a pin seat and can be connected with the caster bracket 32 of the movable caster 9 in an inserting manner, but may include a fixed connecting plate which is installed on the caster bracket 32 of the movable caster 9 and can be fixedly connected with the case 7 at a proper position, or may be other fixed connecting devices as long as the caster bracket 32 can be fixed at a proper position during the operation of the power generation equipment to limit the rotation around the vertical direction; the connecting rod 4 can also be a straight connecting rod which is not formed by combining a straight connecting rod and an inclined connecting rod, but can be simply a straight connecting rod which is parallel to the left side surface and the right side surface of the case 7; the screw 18 may be not vertically arranged, but horizontally arranged or arranged at a certain angle with the vertical direction; the card base body 40 may be a straight line instead of an angle square, and a card slot inserted into the assembly frame 3 of the photovoltaic assembly 2 is arranged on the card base body 40 in the straight line shape, and is fixedly connected with the assembly frame 3 on one side of the photovoltaic assembly 2 through a corresponding card fixing block, so that the light tracking sensing device 1 can be also ensured to be detachably mounted on the photovoltaic assembly 2. Therefore, any modification and variation based on the basic principle of the present invention should be considered as falling within the protection scope of the present invention.

Claims

1. A portable double-shaft tracking high-efficiency photovoltaic power generation equipment comprises a photovoltaic module (2) and an energy storage battery (23), and is characterized in that: the photovoltaic modules (2) are connected with each other in a foldable and movable mode through connecting hinges (5), one photovoltaic module (2) is movably connected with a case (7) through supporting hinges (6), each folded photovoltaic module (2) is located on the upper side face of the case (7), the length and width of the upper side face of the case (7) correspond to the length and width of the photovoltaic module (2), supporting rods (15) are detachably arranged on the back faces of the unfolded photovoltaic modules (2), connecting rods (4) are hinged on the supporting rods (15), screw rods (18) are rotatably supported on the case (7), the other ends of the connecting rods (4) are hinged on nuts (17) rotatably connected with the screw rods (18), and the screw rods (18) are in transmission connection with high-low angle tracking motors (22); a fixed caster (11) and two movable casters (9) are arranged at the bottom of the case (7), a limiting fixing device (8) is arranged between a caster bracket (32) of one movable caster (9) and the case (7), an azimuth tracking motor (10) is supported on the caster bracket (32) of the movable caster (9), and the azimuth tracking motor (10) is in transmission connection with a wheel disc of the movable caster (9); the bottom of the fixed caster (11) and the bottom of the movable caster (9) are provided with a combined base plate (13), the fixed caster (11) can be rotatably supported on the combined base plate (13) along the vertical direction through a caster clamping seat (12), the combined base plate (13) is provided with an annular track (14), the center of a circular ring of the annular track (14) is positioned on a rotating axis between the caster clamping seat (12) and the combined base plate (13), and the two movable casters (9) are positioned on the annular track (14); the light following sensing device (1) is detachably arranged on the photovoltaic module (2), the light following sensing device (1) comprises a substrate (34), a shading column (35) vertical to the substrate (34) is arranged in the middle of the front surface of the substrate (34), a plurality of strip-shaped photovoltaic cell pieces (36) are packaged on the front surface of the substrate (34), the photovoltaic cell pieces (36) are radially and uniformly distributed on the periphery of the shading column (35), and the photovoltaic cells (36) are arranged into at least one circle at the periphery of the shading column (35), the circle center of the circle where the photovoltaic cells (36) arranged into the circle are located on the axis of the shading column (35), two ends of each photovoltaic cell (36) are electrically connected with the control panel (37) through the diversion strips, the substrate (34) is connected with the photovoltaic module (2) through a mounting and connecting seat (39), and the front surface of the substrate (34) is parallel to the light receiving surface of the photovoltaic module (2); the light tracking sensing device (1), the high-low angle tracking motor (22) and the azimuth angle tracking motor (10) are electrically connected with the control device (26), the control device (26) and the energy storage battery (23) are installed in the case (7), the energy storage battery (23) is respectively electrically connected with the photovoltaic module (2), the high-low angle tracking motor (22), the azimuth angle tracking motor (10) and the control device (26), a direct current output interface connected with the energy storage battery (23) is arranged on the case (7), an inverter (25) is further arranged in the case (7), the inverter (25) is electrically connected with the energy storage battery (23), and an alternating current output interface connected with the output end of the inverter (25) is arranged on the case (7).

2. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: the photovoltaic module is characterized in that the number of the photovoltaic modules (2) is three, the middle photovoltaic module (2) is movably connected with the case (7) through a supporting hinge (6), the left photovoltaic module and the right photovoltaic module (2) are respectively connected with the middle photovoltaic module (2) in a foldable and movable mode through a connecting hinge (5), and hinge axes of the two connecting hinges (5) are respectively located on the upper side and the lower side of the two adjacent photovoltaic modules (2).

3. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: the supporting rods (15) are respectively arranged on the left side and the right side, the supporting rods (15) on each side are attached to the back of the assembly frame (3) of the photovoltaic assembly (2) on the corresponding side and the back of the assembly frame (3) on the adjacent side of the adjacent photovoltaic assembly (2), supporting clamping grooves (29) are formed in the supporting rods (15), the supporting clamping grooves (29) are connected with lower folding edge clamping cards of the assembly frames (3) of the photovoltaic assemblies (2) on the corresponding side in an inserting mode, and the supporting rods (15) on each side are hinged with connecting rods (4) respectively.

4. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: the two screw rods (18) are respectively supported on two opposite side surfaces of the case (7) in a rotating mode, a nut (17) screwed on each screw rod (18) is hinged with a corresponding connecting rod (4) hinged to the support rod (15), a worm wheel (21) is fixedly connected to the lower end of each screw rod (18), two worms (19) meshed with the two worm wheels (21) are installed on the same worm shaft (20), the two screw rods (18) are in transmission connection with a high-low angle tracking motor (22) through corresponding worm wheel and worm pairs and worm shafts (20), and the high-low angle tracking motor (22) is installed on the case (7).

5. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: the limiting fixing device (8) comprises a movable bolt (33) installed on the case (7), and the movable bolt (33) can be connected with a caster bracket (32) of the movable caster (9) in an inserting mode.

6. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: the combined backing plate (13) comprises a rectangular middle plate (30) and four side plates (31) hinged to the four sides of the middle plate (30), and the combined backing plate (13) can be folded into a box cover-shaped cover to be horizontally placed on the photovoltaic module (2) on the upper side of the case (7) after being folded.

7. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: a rail card slot (16) is arranged at the rear side of the case (7), and the annular rail (14) can be placed in the rail card slot (16).

8. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: the photovoltaic cell pieces (36) are arranged into two to four circles from inside to outside on the periphery of the shading column (25), 12-36 pieces are distributed in each circle, and the number of the photovoltaic cell pieces (36) positioned on the outer circle in the two adjacent circles of the photovoltaic cell pieces (36) is larger than or equal to the number of the photovoltaic cell pieces (36) positioned on the inner circle.

9. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 1, wherein: the installing and connecting seat (39) comprises a clamping seat body (40), the clamping seat body (40) is in an angle square shape, component clamping grooves (41) corresponding to component frames (3) of the photovoltaic components (2) are formed in the inner sides of the two sides of the angle square-shaped clamping seat body (40), clamping blocks (43) are arranged on one sides of the clamping seat body (40), the clamping blocks (43) are fixedly connected to the clamping seat body (40) in an inserting mode, two clamping grooves (42) are formed in the clamping blocks (43), the two clamping grooves (42) are opposite to the inner sides of the two sides of the clamping seat body (40) respectively, and the inner side walls of the clamping grooves (42) are inserted into the corresponding component clamping grooves (41).

10. The portable dual-axis tracking high-efficiency photovoltaic power generation device of claim 9, wherein: one side of the clamping seat body (40) is provided with a clamping block insertion slot (44), the clamping block (43) is provided with an elastic clamping jaw (45), and the elastic clamping jaw (45) is fixedly connected with the clamping block insertion slot (44) in an insertion mode.