CN114050761A

CN114050761A - Step-by-step unfolding and folding photovoltaic support, mobile photovoltaic power generation device and building method thereof

Info

Publication number: CN114050761A
Application number: CN202111200012.5A
Authority: CN
Inventors: 李小卫; 王秉林; 孟庆平; 宋志成; 赵邦桂; 韩金成
Original assignee: Huanghe Hydropower Development Co Ltd; Xian Solar Power Branch of Qinghai Huanghe Hydropower Development Co Ltd; Xining Solar Power branch of Qinghai Huanghe Hydropower Development Co Ltd
Current assignee: Huanghe Hydropower Development Co Ltd; Xian Solar Power Branch of Qinghai Huanghe Hydropower Development Co Ltd; Xining Solar Power branch of Qinghai Huanghe Hydropower Development Co Ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-02-15

Abstract

The invention discloses a step-by-step unfolding and folding photovoltaic support, which comprises a basic bearing secondary beam, a cabin body fixed on the upper surface of the basic bearing secondary beam, two folding photovoltaic assemblies and a locking mechanism arranged on the cabin body, wherein the two photovoltaic assemblies are respectively and rotatably arranged on the basic bearing secondary beam and positioned at two sides of the cabin body; the photovoltaic assembly comprises a plurality of photovoltaic units which are rotatably connected, and has a first state of unfolding a tiled spliced plate shape and a second state of folding a plurality of laminated plate shapes, and the photovoltaic assembly stands on the foundation bearing secondary beam in the second state; the retaining member is used for locking the photovoltaic module when the photovoltaic module stands on the foundation bearing secondary beam. The invention also discloses a mobile photovoltaic power generation device and a construction method thereof. The photovoltaic power generation system can be quickly built in a specified scene, is convenient to transport and small in occupied area, can realize high-power generation after being unfolded, and is flexible and practical.

Description

Step-by-step unfolding and folding photovoltaic support, mobile photovoltaic power generation device and building method thereof

Technical Field

The invention relates to the technical field of photovoltaics, in particular to a step-by-step unfolding and folding photovoltaic bracket, a mobile photovoltaic power generation device and a building method thereof.

Background

With the development and progress of society, the sustainable development of environment and resources is more and more concerned, and the utilization of new energy becomes more and more important. The solar photovoltaic power generation process is simple, no mechanical rotating part is arranged, fuel is not consumed, no substance including greenhouse gas is emitted, no noise and no pollution are caused, and the solar energy resources are widely distributed and inexhaustible. Therefore, compared with novel power generation technologies such as wind power generation, biomass power generation and nuclear power generation, photovoltaic power generation is a renewable energy power generation technology with ideal characteristics of sustainable development.

The photovoltaic power generation device in the prior art generally integrates photovoltaic panels with back panels to form a whole panel, and the photovoltaic panels can be fixed on a mounting platform (such as a building roof or a base station type) at a certain angle, so that power can be generated by utilizing the energy of solar illumination absorbed by the photovoltaic panels.

However, due to the low solar energy density, the floor space of the photovoltaic power generation system is large, the photovoltaic power generation system is usually built in an open remote area, and the transmission of electric energy in an extra distance causes energy loss and increases the electricity consumption cost. Therefore, the photovoltaic power generation system is restricted by a building site, and cannot be built quickly in a specified scene, so that the application and popularization of the photovoltaic power generation system are limited, for example, in occasions requiring high-power mobile power supplies, such as field scientific investigation, temporary power supply arrangement for communication, emergency rescue and relief, desert polar regions and the like, the building of the existing photovoltaic power generation system needs a long period, and power supply cannot be realized in time.

Disclosure of Invention

In view of the defects in the prior art, the invention provides the step-by-step unfolding folding photovoltaic bracket, the mobile photovoltaic power generation device and the construction method thereof, the folding photovoltaic bracket can be folded when not needed, the occupied area is small, the folding photovoltaic bracket can be quickly transferred to a designated place through a vehicle and transported among different destinations, the power generation can be realized after the folding photovoltaic bracket is unfolded, the electric energy supply in different places is convenient, and the folding photovoltaic bracket, the mobile photovoltaic power generation device and the construction method thereof are flexible and practical.

In order to achieve the purpose, the invention adopts the following technical scheme:

a step-by-step unfolding folding photovoltaic support comprises a basic bearing secondary beam, a cabin body fixed on the upper surface of the basic bearing secondary beam, two folding photovoltaic assemblies and locking mechanisms arranged on the cabin body, wherein the cabin body is used for accommodating and connecting electrical elements of the photovoltaic assemblies, the two photovoltaic assemblies are respectively and rotatably arranged on the basic bearing secondary beam and positioned on two sides of the cabin body, and the locking mechanisms comprise two locking pieces respectively extending out of two sides of the cabin body; the photovoltaic assembly comprises a plurality of photovoltaic units which are rotatably connected, and has a first state of unfolding a tiled spliced plate shape and a second state of folding a plurality of laminated plate shapes, and in the second state, the photovoltaic assembly stands on the foundation bearing secondary beam; the locking piece is used for locking the photovoltaic assembly when the photovoltaic assembly stands on the foundation bearing secondary beam.

As one embodiment, each photovoltaic unit comprises a fixed frame and a battery assembly arranged on the front surface of the fixed frame, the fixed frames of two adjacent photovoltaic units are hinged with each other, and the fixed frame of the photovoltaic unit positioned at the end part is rotatably connected with the foundation bearing secondary beam; the photovoltaic module further comprises a plurality of first telescopic mechanisms, and two adjacent fixing frames of the photovoltaic units are connected to two ends of each first telescopic mechanism respectively and used for driving the adjacent two fixing frames to rotate relatively to change a folding state.

As one embodiment, the fixing frame includes two cross beams disposed at intervals along the length direction of the photovoltaic unit and a middle beam connected between two adjacent cross beams, a support block is disposed on a front surface of the cross beam of the fixing frame located at a non-free end, the free end of the support block is farther from the middle beam relative to the surface of the battery assembly, and the support block is used for abutting against the cross beam of the adjacent photovoltaic unit when in the second state.

As one embodiment, the back surface of the battery assembly is rotatably connected with one of the cross beams, and the rotating shaft direction of the battery assembly is consistent with the length direction of the cross beam; photovoltaic module still includes second telescopic machanism, second telescopic machanism one end with battery pack's the back is rotationally connected, and the other end is articulated the mount to change at flexible in-process battery pack's inclination.

As one embodiment, the back surface of the battery pack is provided with an upper slide rail in a shape of a long hole extending along the length direction of the battery pack, and one surface of the fixing frame facing the battery pack is provided with a lower slide rail extending along the length direction of the fixing frame; the lower slideway is arranged on one side of the hinged part of the second telescopic mechanism on the fixed frame, one end of the lower slideway, which faces the battery component, is open, and the hinged part, which faces away from the fixed frame, extends obliquely towards the battery component and faces one end of the battery component; the second telescopic machanism with the tip that battery pack connects is equipped with the perpendicular to the pivot of second telescopic machanism is with connecting the bearing of pivot tip, the pivot is located in the last slide, the bearing is used for second telescopic machanism is located when contracting completely in the glide slope, and the in-process of second telescopic machanism extension is followed the glide slope court the open end of glide slope rolls until breaking away from the open end.

As one embodiment, two first guide blocks are convexly arranged on the back surface of the battery assembly at intervals along the width direction of the photovoltaic unit, two second guide blocks corresponding to the two first guide blocks are convexly arranged on the fixing frame, the upper slideway is arranged on the first guide blocks, the lower slideway is arranged on the second guide blocks and is arranged between the hinged part of the second telescopic mechanism on the fixing frame and the rotary connection part of the battery assembly and the cross beam; when the second telescopic mechanism is completely contracted, the two first guide blocks are positioned between the two second guide blocks, the rotating shaft is positioned at one end, far away from the rotating connection part of the battery pack and the cross beam, of the upper slideway, and the bearing is positioned at the non-opening end of the lower slideway.

As one embodiment, the photovoltaic module further comprises a force arm unit, the force arm unit comprises a driving arm and a supporting arm, one end of the supporting arm is hinged to the driving arm, the other end of the supporting arm is hinged to the fixing frame, and two ends of the driving arm are respectively hinged to the first telescopic mechanism and another fixing frame adjacent to the first telescopic mechanism.

As one embodiment, the step-by-step unfolding and folding photovoltaic support further comprises a plurality of supporting leg mechanisms, wherein the supporting leg mechanisms are detachably arranged on the fixing frames and used for supporting the back of each fixing frame in the first state.

The invention also provides a vehicle-mounted photovoltaic power generation device, which comprises a truck and any one of the step-by-step unfolded and folded photovoltaic supports, wherein the step-by-step unfolded and folded photovoltaic supports are borne on a bearing part of the truck through the basic bearing secondary beam.

The invention further aims to provide a building method of the vehicle-mounted photovoltaic power generation device, which comprises the following steps:

respectively unfolding each photovoltaic module towards two sides of the cabin body to enable a plurality of rotatably connected photovoltaic units of each photovoltaic module to be in a first state of a tiled spliced plate shape;

taking down the supporting leg mechanism on the back of the photovoltaic module and supporting the supporting leg mechanism between the photovoltaic module and the ground;

and starting the second telescopic mechanisms on the back of each battery component to enable the battery components to be supported on the fixed frame in an inclined mode.

According to the invention, two parts of foldable photovoltaic assemblies are integrated on two sides of the cabin body on the basic bearing secondary beam, the basic bearing secondary beam is arranged on the truck, when the photovoltaic assemblies need to be transported between different destinations, the photovoltaic units of the photovoltaic assemblies can be folded into a laminated plate shape and then stand on two sides of the cabin body, and then locking is carried out through the locking mechanism on the cabin body, and after the photovoltaic assemblies are transported to the destinations, the photovoltaic units can be unfolded to form a spliced plate shape facing sunlight to generate electricity. The photovoltaic power generation system can be quickly built in a specified scene, is convenient to transport and small in occupied area, can realize high-power generation after being unfolded, realizes electric energy supply in different places, and is flexible and practical.

Drawings

Fig. 1 is a semi-expanded state diagram of a vehicle-mounted photovoltaic power generation apparatus according to an embodiment of the present invention;

fig. 2 is a semi-unfolded state diagram of a step-by-step unfolded and folded photovoltaic bracket according to an embodiment of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 shows a schematic structural diagram of a locking mechanism of an embodiment of the present invention;

fig. 5 is a schematic front view of one of the photovoltaic units according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a backside structure of one of the photovoltaic cells according to an embodiment of the present invention;

FIG. 7 is a schematic view of a photovoltaic unit in a support state according to an embodiment of the present invention;

fig. 8 is a schematic diagram illustrating a supporting state of a photovoltaic unit on one side of a vehicle-mounted photovoltaic power generation apparatus according to an embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of the photovoltaic unit of FIG. 8 in the support state;

FIG. 10 is another enlarged partial view of the photovoltaic unit of FIG. 8 in the propped state;

FIG. 11 is an enlarged partial view of a photovoltaic unit in an unsupported, folded state according to an embodiment of the invention;

FIG. 12 is a schematic diagram illustrating a process of flipping a holder according to an embodiment of the present invention;

FIG. 13 is a partial structural view of the fixture after deployment of only one photovoltaic unit according to an embodiment of the present invention;

FIG. 14 shows a schematic structural view of each photovoltaic unit of an embodiment of the present invention after it is fully deployed;

FIG. 15 is an enlarged view at B of FIG. 14;

FIG. 16 is a schematic structural diagram of a support leg mechanism according to an embodiment of the present invention;

FIG. 17 is an exploded view of a support leg mechanism according to an embodiment of the present invention;

FIG. 18 is a cross-sectional structural view of a support leg mechanism according to an embodiment of the present invention;

FIG. 19 is a schematic view showing an installation state of a support leg mechanism according to an embodiment of the present invention;

FIG. 20 is a schematic illustration showing a disassembled state of the support leg mechanism according to the embodiment of the present invention.

Detailed Description

In the present invention, the terms "disposed", "provided" and "connected" are to be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the 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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

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

Referring to fig. 1 and 2, an embodiment of the invention provides a step-by-step unfolding folding photovoltaic support, which includes a basic load-bearing secondary beam 10, a cabin 20 fixed on an upper surface of the basic load-bearing secondary beam 10, two folding photovoltaic modules 30, and a locking mechanism 40 disposed on the cabin 20. The cabin 20 is configured to accommodate electrical components connected to the photovoltaic modules 30, the two photovoltaic modules 30 are respectively rotatably disposed on the basic load-bearing secondary beam 10 and located at two sides (e.g., left and right sides of fig. 2) of the cabin 20, and the locking mechanism 40 is configured to lock the photovoltaic modules 30 when the photovoltaic modules 30 need to be transported.

As shown in fig. 3 and 4, the locking mechanism 40 includes two locking members 41 respectively extending out of two sides of the cabin 20, the photovoltaic module 30 includes a plurality of photovoltaic units which are rotatably connected, and has a first state of unfolding to form a tiled spliced plate shape and a second state of folding to form a plurality of stacked plate shapes, and in the second state, the photovoltaic module 30 stands on the foundation load-bearing sub-beam 10, and the locking members 41 are used for locking the photovoltaic module 30 when the photovoltaic module 30 stands on the foundation load-bearing sub-beam 10.

In this embodiment, it is preferable that the locking member 41 is a locking hook, the locking mechanism 40 further includes a locking pressure cylinder 42, one end of the locking pressure cylinder 42 is hinged to the cabin 20, the other end is hinged to the locking member 41, and the working length of the locking pressure cylinder 42 is changed, so as to drive the locking hook to rotate to hook the locking portion 300 of the photovoltaic module 30. For example, the hook of the locking member 41 is downward, when the locking pressure cylinder 42 is controlled to contract, the locking members 41 on both sides are pulled upward obliquely, so as to disengage from the locking portion 300, i.e. the locking of the photovoltaic module 30 by the locking mechanism 40 can be released; after the photovoltaic modules 30 on the two sides are folded, the hook portion of the locking member 41 can be hooked on the locking portion 300 by controlling the extension of the locking pressure cylinder 42, so that the locking mechanism 40 locks the photovoltaic modules 30. The locking part 300 may be provided on the back of the photovoltaic unit, i.e., a mounting frame of the photovoltaic panel. In this embodiment, the locking portion 300 is formed to have a cylindrical shape matching the size of the locking hook. Lithium batteries and a hydraulic and electrical control system are arranged in the cabin 20, and the lithium batteries are electrically connected with the photovoltaic units and used for driving the hydraulic and electrical control system to work and collecting electric energy generated by the photovoltaic units.

As shown in fig. 4, one end of the folding pressure cylinder 50 is hinged on the basic load-bearing secondary beam 10, and the other end is hinged on a position of the photovoltaic module 30 different from the hinged position of the photovoltaic module 30 and the basic load-bearing secondary beam 10, and is used for changing the folding angle of the photovoltaic module 30 during the working process. The mutual unfolding direction of each photovoltaic unit in the photovoltaic module 30 is perpendicular to the rotating shaft direction of the photovoltaic module 30 and the foundation bearing secondary beam 10. That is, the axial direction of relative rotation between the photovoltaic units coincides with the axial direction of relative rotation between the entire photovoltaic module 30 and the foundation load-bearing secondary beam 10.

By releasing the locking of the locking mechanism 40 to the photovoltaic modules 30, the photovoltaic modules 30 on both sides are unfolded towards both sides relative to the foundation load-bearing secondary beam 10, and then each photovoltaic unit in the photovoltaic modules 30 can be further unfolded, so that the photovoltaic units are tiled and unfolded towards both sides of the foundation load-bearing secondary beam 10.

As shown in fig. 5 and 6, a schematic structural diagram of the second photovoltaic unit is shown. Each photovoltaic unit comprises a fixing frame 301 and a battery assembly 302 arranged on the front surface of the fixing frame 301, the fixing frames 301 of two adjacent photovoltaic units are hinged with each other, and the fixing frame 301 of the photovoltaic unit positioned at the end part is rotatably connected with the basic load-bearing secondary beam 10; the photovoltaic module 30 further includes a plurality of first telescoping mechanisms 31, and two ends of each first telescoping mechanism 31 are respectively connected to the fixing frames 301 of two adjacent photovoltaic units, and are used for driving the two adjacent fixing frames 301 to rotate relatively to change the folded state.

In order to drive each photovoltaic unit more smoothly and more laborsavingly, the photovoltaic module 30 of this embodiment further includes a force arm unit connected between adjacent photovoltaic units, as shown in fig. 5, the force arm unit specifically includes a driving arm 33 and a supporting arm 34, one end of the supporting arm 34 is hinged to the driving arm 33, the other end is hinged to the fixing frame 301, and two ends of the driving arm 33 are respectively hinged to the first telescopic mechanism 31 and another fixing frame 301 adjacent thereto.

As shown in fig. 7 to 9, the cell module 302 includes a photovoltaic panel support 3021 and a photovoltaic panel 3022 laid on the front surface of the photovoltaic panel support 3021. The mounting rack of the single photovoltaic panel 3022 may specifically include a lower fixing rack 301, a photovoltaic panel support 3021 disposed above the fixing rack 301, and a second telescoping mechanism 32 with two ends rotatably connected to the fixing rack 301 and the photovoltaic panel support 3021, where the front side of the photovoltaic panel support 3021 provides a mounting plane for the photovoltaic panel 3022, and the photovoltaic panel 3022 may be mounted on the front side of the photovoltaic panel support 3021, the fixing rack 301 provides a bearing location for the second telescoping mechanism 32, and the second telescoping mechanism 32 is configured to change a working length during a working process, so as to support the photovoltaic panel support 3021 when extended and fold the photovoltaic panel support 3021 when shortened.

The photovoltaic panel support 3021, the fixing frame 301 and the second telescopic mechanism 32 can be used as an installation frame of the photovoltaic panel 3022, and the inclination angle of the photovoltaic panel 3022 can be changed by changing the working length of the second telescopic mechanism 32 on the installation frame so as to adapt to the irradiation angle of sunlight.

Fig. 9 is a partially enlarged view of the photovoltaic panel support 3021 of the present embodiment on the side on which the back surface of the photovoltaic panel support 3021 is located in the supported state; fig. 10 is a partially enlarged view of the side of the photovoltaic panel support 3021 where the fixing frame 301 is located in the supporting state according to the present embodiment; fig. 11 is a schematic view showing the positional relationship of the structural members in the mounting frame in an unsupported folded state according to this embodiment.

Specifically, the back surface of the photovoltaic panel support 3021 of the present embodiment is provided with an upper slide 30200 in a shape of a long hole extending along the length direction of the photovoltaic panel support 3021, and correspondingly, the fixed frame 301 is provided with a lower slide 30100 extending along the length direction on the surface facing the photovoltaic panel support 3021, and the lower slide 30100 extends obliquely towards the photovoltaic panel support 3021 and is open towards one end of the photovoltaic panel support 3021; the end of the second telescoping mechanism 32 connected to the photovoltaic panel support 3021 is provided with a rotating shaft 321 and a bearing 322 connected to the end of the rotating shaft 321, and the rotating shaft 321 is perpendicular to the second telescoping mechanism 32.

As shown in fig. 11, the rotating shaft 321 is always disposed in the upper slide 30200, and the bearing 322 can move along the lower slide 30100 or can be separated from the lower slide 30100 from the open end. When the second telescoping mechanism 32 is completely retracted, the photovoltaic panel support 3021 is in a completely folded state and attached to the underlying fixed mount 301, while the second telescoping mechanism 32 can be horizontally (here, parallel to the photovoltaic panel support 3021) sandwiched between the photovoltaic panel support 3021 and the fixed mount 301, the bearing 322 is located at a non-open-end limit position at the lowest end in the lower slideway 30100, the rotating shaft 321 is located at a leftmost limit position of the upper slideway 30200, during the extension of the second telescoping mechanism 32, the bearing 322 is driven by the second telescoping mechanism 32 to roll along the lower slideway 30100 toward the open end of the lower slideway 30100 to be separated from the open end, and during the extension of the second telescoping mechanism 32, the rotating shaft 321 moves to the rightmost side from the leftmost limit position of the upper slideway 30200. When the rotating shaft 321 moves to the rightmost side of the upper slide rail 30200, the opening angle of the photovoltaic panel support 3021 reaches the maximum.

Through the arrangement, the mounting rack can be completely folded when the second telescopic mechanism 32 is contracted (the photovoltaic panel support 3021 is parallel to the mounting rack 301, the starting points of the second telescopic mechanism 32 at one end of the mounting rack 301 side, one end of the photovoltaic panel support 3021 side, the upper slide 30200 and the lower slide 30100 are both located in the same plane), the size is minimum, but due to the special shape of the lower slide 30100, the driving force of the second telescopic mechanism 32 can generate a partial moment in the jacking direction perpendicular to the photovoltaic panel support 3021, the photovoltaic panel support 3021 is smoothly propped up, and the force application trouble caused by insufficient space in the structural design process can be avoided.

The fixing frame 301 mainly includes two cross beams 3011 arranged at intervals along the length direction of the photovoltaic panel support 3021 and a middle beam 3012 connected between two adjacent cross beams 3011, the photovoltaic panel support 3021 is rotatably connected with one of the cross beams 3011, and the rotation axis direction of the photovoltaic panel support 3021 is the same as the length direction of the cross beam 3011. In this way, the lower chute 30100 is disposed on one side of the hinge portion of the second telescopic mechanism 32 on the fixing frame 301, and one end of the lower chute 30100 facing the battery module 302 is open, and extends obliquely toward the battery module 302 away from the hinge portion on the fixing frame 301 and is open toward one end of the battery module 302.

The beam 3011 of the fixing frame 301 located at the non-free end is provided with a supporting block 30110 on the front surface, the free end of the supporting block 30110 is farther from the middle beam 3012 relative to the surface of the battery assembly 302, and the supporting block 30110 can be used to abut against the beam 3011 of the adjacent photovoltaic unit when in the second state, so as to ensure the gap between the adjacent battery assemblies 302.

As shown in fig. 8 and 9, two first guide blocks 3020 disposed at intervals in the width direction of the photovoltaic panel support 3021 are protruded from the back surface of the photovoltaic panel support 3021, two second guide blocks 3010 corresponding to the two first guide blocks 3020 are protruded from the fixed frame 301, the upper slide way 30200 is disposed on the first guide blocks 3020, the lower slide way 30100 is disposed on the second guide blocks 3010, and the lower slide way is located between the hinge point of the second telescopic mechanism 32 on the fixed frame 301 and the rotation connection point of the photovoltaic panel support 3021 and the cross beam 3011. When the second telescoping mechanism 32 is completely retracted, the two first guide blocks 3020 are located between the two second guide blocks 3010, the rotating shaft 321 is located at one end of the upper sliding track 30200 away from the rotating connection portion of the photovoltaic panel support 3021 and the cross beam 3011, and the bearing 322 is located at the non-open end of the lower sliding track 30100. In this way, the first guide block 3020 and the second guide block 3010 can be housed in the same narrow space in the folded state of the mounting bracket.

Since the photovoltaic panel support 3021 is rotatably connected to one side of the fixed frame 301, in order to better support the photovoltaic panel support 3021, the open end of the lower chute 30100 needs to be further away from the hinge point of the second telescoping mechanism 32 on the fixed frame 301 than the non-open end. That is, the open end of the lower chute 30100 is to be further toward the hinged side of the photovoltaic panel support 3021 (right side in fig. 11), and during the process of gradually extending the second telescoping mechanism 32, the bearing 322 of the second telescoping mechanism 32 moves from the non-open end of the lower portion on the left side toward the open end of the upper portion on the right side, so that the rotating shaft 321 drives the photovoltaic panel support 3021 to tilt up, thereby changing the opening angle of the photovoltaic panel support 3021.

As one of the preferred embodiments, the upper run 30200 is parallel to the photovoltaic panel support 3021. Lower chute 30100 further comprises a first portion and a second portion connected to each other, the first portion extending obliquely from a non-open end towards both the pivotal connection of photovoltaic panel support 3021 to beam 3011 and the photovoltaic panel support 3021 above, the second portion extending to an open end relative to the first portion towards the pivotal connection of photovoltaic panel support 3021 to beam 3011, the open end being closer to the pivotal connection of photovoltaic panel support 3021 to beam 3011 relative to the first portion.

To provide structural strength and reduce the weight of the assembly, cross-beam 3011 and mid-beam 3012 may be formed from i-steel. In addition, the cross beam 3011 and the middle beam 3012 may also be hollowed out, and the hollowed holes are formed in the surface of the cross beam to reduce part of the weight of the beam, so that the beam is convenient to transport and move.

More specifically, the second telescoping mechanism 32 may include a cylinder 323, a piston rod 324 partially disposed in the cylinder 323, and a rotating shaft sleeve 325 fixedly sleeved outside the cylinder 323, wherein two sides of the rotating shaft sleeve 325 are respectively convexly provided with a shaft portion rotatably connected to the photovoltaic panel bracket 3021, and the piston rod 324 is connected to the rotating shaft 321.

It is understood that the pressure cylinder 42, the folding pressure cylinder 50, the first retracting mechanism 31, and the second retracting mechanism 32 may be hydraulic cylinders, or pneumatic cylinders, and are not limited thereto.

The inclined lower sliding channel on the fixing frame is used for guiding the free end of the second telescopic mechanism to incline and lift up, so that the free end of the second telescopic mechanism is utilized to slide in the upper sliding channel of the photovoltaic panel support and drive the photovoltaic panel support to rise, smooth unfolding of the photovoltaic panel assembly and the photovoltaic panel support under a completely tight state can be realized, the phenomenon that the internal structure of a photovoltaic unit is difficult to unfold after being folded can not occur, and the compactness of the photovoltaic unit structure is also ensured.

In the present embodiment, the photovoltaic module 30 on each side has 5 photovoltaic units as an example, as shown in fig. 8 and 13 to 15, the photovoltaic module 30 includes a first photovoltaic unit 30a, a second photovoltaic unit 30b, a third photovoltaic unit 30c, a fourth photovoltaic unit 30d and a fifth photovoltaic unit 30e, the first photovoltaic unit 30a is rotatably connected to the base load-bearing sub-beam 10 through the long side of the fixing frame 301, and is hinged to the free end of the folding pressure cylinder 50 at another position, the first photovoltaic unit 30a is drawn by the shortening action of the folding pressure cylinder 50 to be vertically erected, or the first photovoltaic unit 30a is pushed by the extending action of the folding pressure cylinder 50 to be flattened. The first photovoltaic unit 30a, the second photovoltaic unit 30b, the third photovoltaic unit 30c, the fourth photovoltaic unit 30d and the fifth photovoltaic unit 30e are sequentially hinged, after final folding, the fifth photovoltaic unit 30e, the fourth photovoltaic unit 30d, the third photovoltaic unit 30c, the second photovoltaic unit 30b and the first photovoltaic unit 30a are sequentially wound from inside to outside, the photovoltaic units are opposite to each other to form a regular structure similar to a cube, the photovoltaic units and the photovoltaic units are kept at a preset interval through supporting blocks 30110 and are not in contact with each other, the first photovoltaic unit 30a and the second photovoltaic unit 30b wind other photovoltaic units therein, the back locking part 300 is formed on a cross beam 3011 of the second photovoltaic unit 30b, the axial direction of the locking part 300 is perpendicular to the surface of the cross beam 3011, after the photovoltaic module 30 is erected on the basic bearing secondary beam 10, the back of the second photovoltaic unit 30b faces the cabin 20, and the locking part 300 faces the locking member 41, so that the locking pressure cylinder 42 can be controlled to operate to hook the locking member 41 on the locking part 300.

It is understood that in other embodiments, the number of photovoltaic cells in each photovoltaic assembly 30 can be greater or fewer.

Referring to fig. 12, the cross beam 3011, the first telescopic mechanism 31, the driving arm 33, the supporting arm 34, and the extension arm 35 constitute a main portion of the turnover mechanism, the cross beam 3011 includes two sub-cross beams 30111 disposed at an interval, the first telescopic mechanism 31 is disposed between the two sub-cross beams 30111, and one end of the first telescopic mechanism is rotatably connected to the tail portion of the cross beam 3011 (e.g., the left side of fig. 12) through a pin, the other end of the first telescopic mechanism is rotatably connected to one end of the driving arm 33, two ends of the extension arm 35 are rotatably connected to the other end of the driving arm 33 and the head portion of the cross beam 3011 through a pin, and one end of the extension arm 35 close to the driving arm 33 is provided with a connecting lug 350 for connecting the cross beam 3011 of another turnover mechanism. Two ends of the supporting arm 34 are respectively hinged to the middle of the driving arm 33 and the head of the cross beam 3011 (as shown in the right side of fig. 12), and the first telescopic mechanism 31 drives the driving arm 33 to rotate relative to the supporting arm 34 to drive the extension arm 35 to rotate during the operation.

In the photovoltaic module 30, the connecting lug 350 of each turnover mechanism is fixed relative to the tail of the cross beam 3011 of another adjacent turnover mechanism. The cross beam 3011 is used as a part of the fixing frame 301, the cross beams 3011 of every two adjacent fixing frames 301 are hinged to each other, specifically, the cross beam 3011 of another fixing frame 301 is fixed to the connecting lug 350 of the current fixing frame 301, so that the two adjacent fixing frames 301 can rotate relatively.

In fig. 12, (a) is a state in which the engaging lug 350 of a single turnover mechanism is parallel to the cross beam 3011, and the engaging lug 350 faces the tail of the cross beam 3011, at this time, the first telescopic mechanism 31 has the longest working length, in the foldable solar photovoltaic module, the cross beams 3011 of a plurality of turnover mechanisms are stacked up and down, and the foldable solar photovoltaic module is in a folded state, occupies a small space, and can be conveniently packaged and transported; (b) the connecting lug 350 of a single turnover mechanism is perpendicular to the cross beam 3011, at this time, the first telescopic mechanism 31 gradually contracts and shortens towards the left, and drives the driving arm 33, the supporting arm 34 and the extending arm 35 to rotate clockwise, in the folding solar photovoltaic assembly, the cross beams 3011 of two adjacent turnover mechanisms are in a mutually perpendicular semi-folding state, similar to the mutually perpendicular two cross beams 3011 in fig. 13; (c) in the foldable solar photovoltaic module, the connection lugs 350 of a single turnover mechanism are parallel to the cross beam 3011, but the direction of the connection lugs 350 is opposite to that in (a), and the connection lugs are opposite to the tail of the cross beam 3011, in the foldable solar photovoltaic module, a plurality of turnover mechanisms are horizontally spread out (in the state of fig. 14), the cross beams 3011 of the turnover mechanisms are connected left and right, so that the battery modules 302 above the turnover mechanisms can face the same side for solar energy conversion, at the moment, the length of the first telescopic mechanism 31 is shortened to be shortest, the extension arm 35 rotates 180 degrees relative to the state in (a), and the cross beam 3011 and the battery modules 302 on the surface of the cross beam 3011 correspondingly rotate 180 degrees.

Because the first telescopic mechanism 31 is installed between the two sub-beams 30111, the occupied space of the mechanism is saved, the overall structure compactness is improved, the thickness of the whole mechanism is greatly reduced, and valuable space is reserved for other equipment.

In this embodiment, the cross beam 3011 further includes a branch beam 30111a obliquely led out from each sub-cross beam 30111 near the head end thereof, the two branch beams 30111a are disposed at an interval and extend toward the head of the cross beam 3011, and the connecting lug 350 and the supporting arm 34 are both rotatably connected between the two branch beams 30111a through a pin. During the action of the first telescopic mechanism 31, the extension arm 35 and the support arm 34 can enter between the two branch beams 30111a, increasing the stroke of the mechanism.

More specifically, the connection point of the extension arm 35 and the branch beam 30111a is closer to the free end of the branch beam 30111a than the connection point of the support arm 34 and the branch beam 30111a, and the drive arm 33 is bent at the connection point with the support arm 34 in a direction away from the branch beam 30111 a. The bent portion provides a larger swing angle of the driving arm 33 during the operation of the first telescopic mechanism 31, and can avoid interference with the branch beam 30111a and other mechanisms. At the same time, the branch beam 30111a may also be configured to have an arc shape that curves toward the head facing away from the crossbar 3011. Because each rotating arm and each beam of the turnover mechanism are designed through an optimized structure, no matter which stage of the action of the first telescopic mechanism 31, the extension arm 35 can obtain quite constant torque output, and the special four-bar linkage mechanism realizes the use requirements of large angle, constant moment and small space.

Here, the first telescopic mechanism 31 may be a hydraulic cylinder, and is flexible in movement and convenient to control. In order to reduce the weight of the structure, a plurality of hollow holes are formed in one or more of the sub-beam 30111, the driving arm 33, the supporting arm 34, the extending arm 35, and the sub-beam 30111. The cross beam 3011, the branch beam 30111a, the driving arm 33, the supporting arm 34 and the extension arm 35 can be made of Q890d high-strength steel plates, and the overall strength can be ensured.

As shown in fig. 5 and fig. 15, the turnover mechanism further includes supporting blocks 30110, the supporting blocks 30110 are disposed on the sub-beams 30111 facing the branch beams 30111a, the free ends of the supporting blocks 30110 are inverted trapezoidal grooves, when the battery assembly 302 is mounted on the fixing frame 301 and two adjacent turnover mechanisms are folded up and down, the sub-beam 30111 above is embedded in the groove of the supporting block 30110 below, so that the supporting blocks 30110 can be used to maintain the gap between the sub-beams 30111 of the upper and lower layers of photovoltaic units. Thus, when the fixing frame 301 is folded for transportation, even when the folding solar photovoltaic module with the photovoltaic unit is folded for transportation, the supporting block 30110 can ensure that no interference occurs between the upper and lower structures, thereby ensuring the reliability of transportation.

Through will fix the shelf design and be a plurality of consecutive tilting mechanism, the accessible telescopic machanism drives adjacent tilting mechanism and overturns each other, can make the photovoltaic support fold for the less whole packing and transportation of occupation space, when photovoltaic device is built, only need with it expand can, both shortened the packing time, reduced the packaging cost again, still improved photovoltaic device and built efficiency.

As shown in fig. 16, the step-by-step unfolding folding photovoltaic support further comprises a plurality of supporting leg mechanisms 60, and the supporting leg mechanisms 60 are detachably arranged on the fixing frames 301 and used for supporting the back of each fixing frame 301 in the first state. The supporting leg mechanism comprises an upper supporting cylinder 601 for contacting a supported object, a lower supporting cylinder 602 for contacting a supporting platform, an upper plug connector 604 and a lower plug connector 605 which are arranged at two ends of the outer wall of the upper supporting cylinder 601 and are collinear, and an operating handle 606. The upper supporting cylinder 601 and the lower supporting cylinder 602 are sleeved with each other to form a telescopic rod structure with adjustable working length, and the total length of the supporting leg mechanism can be changed by changing the overlapping length of the upper supporting cylinder and the lower supporting cylinder.

The free ends of the upper and

lower connectors

604, 605 extend away from each other and are spaced apart from the outer wall of the upper support cylinder 601. As shown in fig. 17, an installation block 6011 with a built-in slide groove 60110 is convexly disposed on an outer wall of at least one end of the upper support cylinder 601, the slide groove 60110 penetrates through one end of the installation block 6011 close to an end of the upper support cylinder 601, a long groove 60111 which is communicated with the slide groove 60110 and extends in a length direction of the slide groove 60110 is disposed on a side surface of the installation block 6011, one end of the operating handle 606 extends out of the long groove 60111, the other end of the operating handle passes through the long groove 60111 and is fixed to a corresponding plug connector in the slide groove 60110, and the operating handle 606 is configured to slide along the long groove 60111 under an external force to change a length of the corresponding plug connector extending out of the slide groove 60110.

In the orientation shown in FIG. 16, the operating handle 606 is slid upward to increase the extension length of the upper connector 604, and the upper connector 604 can be held in the holding hole of the holder, otherwise, the extension length of the upper connector 604 is decreased.

In this embodiment, the lower plug 605 is a fixed plug, and the upper plug 604 is a movable plug, that is, the lower plug 605 is fixed to or integrated with the bottom end of the upper supporting cylinder 601, and the upper plug 604 is installed in the installation block 6011, and is controlled to be clamped with the fixing frame of the battery pack by moving the operating handle 606 up and down. It is understood that in other embodiments, the lower plug 605 may be a movable plug similar to the upper plug 604.

As shown in fig. 18, the support leg mechanism of this embodiment may further include an adjusting member 603, and the adjusting member 603 is connected to the upper support cylinder 601 and the lower support cylinder 602 at the same time, so as to adjust the sleeving length of the upper support cylinder 601 and the lower support cylinder 602. The adjusting part 603 specifically includes lead screw portion 6031, spacing ring portion 6032 and outer hexagon nut head 6033, and outer hexagon nut head 6033 connects in the one end of lead screw portion 6031, and the one end that is close to outer hexagon nut head 6033 of lead screw portion 6031 is located to spacing ring portion 6032, and the radial dimension of spacing ring portion 6032 is greater than lead screw portion 6031 and outer hexagon nut head 6033. Meanwhile, the upper supporting cylinder 601 comprises an annular lead screw supporting platform 6012 close to the bottom end and an operation hole 601H which penetrates through the side wall of the upper supporting cylinder and is close to the upper part of the lead screw supporting platform 6012; the top end of the lower support cylinder 602 is provided with a head plate 6021 with internal threads. The inner diameter of the upper supporting cylinder 601 is larger than the outer diameter of the lower supporting cylinder 602, and part of the lower supporting cylinder 602 is inserted into the upper supporting cylinder 601; the lead screw portion 6031 penetrates through the lower support cylinder 602 and is in threaded fit with the end plate 6021, the limit ring portion 6032 is arranged between the end plate 6021 and the lead screw support table 6012 and abuts against the lead screw support table 6012, and the outer hexagonal nut head 6033 penetrates through the lead screw support table 6012 and extends to a part right opposite to the operation hole 601H so that a wrench can be inserted into the operation hole 601H to rotate and adjust the length of the lead screw portion 6031 extending into the lower support cylinder 602.

Further, the supporting leg mechanism further comprises a pressure spring 60112 arranged in the slide groove 60110, and the pressure spring 60112 is elastically compressed between the upper plug connector 604 and the bottom of the slide groove 60110. Thus, the compression spring 60112 pushes the upper plug connector 604 outward all the time, and as shown in fig. 19 and fig. 20, the photovoltaic module of this embodiment includes a fixing frame 301, a battery module 302 disposed on the front surface of the fixing frame 301, and the supporting leg mechanism 60, two mounting feet 30120 disposed at an interval are disposed on the same side of the fixing frame 301, the free end of the mounting feet 30120 is in an arc shape matching with the outer wall of the upper supporting cylinder 601, the mounting feet 30120 include a clamping hole 301200, the supporting leg mechanism has a non-working state where each plug connector is embedded in the corresponding clamping hole 301200, the upper supporting cylinder 601 clings to the free end of each mounting foot 30120, and the upper supporting cylinder 601 is supported on the back surface of the fixing frame 301, and the lower supporting cylinder 602 is supported on the supporting platform.

Here, since the fixing frame 301 mainly includes two cross beams 3011 arranged at intervals along the length direction of the photovoltaic panel support 3021 and a middle beam 3012 connected between two adjacent cross beams 3011, the photovoltaic panel support 3021 is rotatably connected to one of the cross beams 3011, and the rotation axis direction of the photovoltaic panel support 3021 coincides with the length direction of the cross beam 3011. The mounting feet 30120 are formed on the intermediate beam 3012 and are perpendicular to the intermediate beam 3012 and the battery module 302, so that the support leg mechanism 60 can be removed from and installed in the side of the fixing bracket 301.

When the pressing spring 60112 is compressed downward by operating the handle 606, the upper plug connector 604 retracts into the sliding groove 60110, so that the upper plug connector 604 can be separated from the corresponding clamping hole of the fixing frame, and then the lower plug connector 605 is also taken out from the other clamping hole of the fixing frame, so as to take down the supporting leg mechanism 60 for supporting (as shown in fig. 7); when the supporting leg mechanism needs to be installed in the fixing frame, the lower connector 605 is aligned with a corresponding clamping hole on the fixing frame, the pressure spring 60112 is compressed downward by the operating handle 606, the upper connector 604 is aligned with the corresponding clamping hole on the fixing frame, and then the operating handle 606 is loosened, so that the upper connector 604 is also clamped in the corresponding clamping hole, and the supporting leg mechanism is accommodated at the back of the fixing frame.

Optionally, a side wall of the upper support cylinder 601 located at the bottom of the screw support bench 6012 is provided with a strip-shaped hole 601V extending along the length direction thereof. The position of the lower support cylinder 602 inside and the fitting length of the screw part 6031 can be seen through the strip-shaped hole 601V, and the limit position of the lower support cylinder 602 is estimated approximately.

Optionally, the free end of the upper plug connector 604 is wedge-shaped, and the corner of the wedge is closer to the upper support cylinder 601, and the free end of the lower plug connector 605 is also wedge-shaped, so that unnecessary interference between the plug connector and the clamping hole 301200 can be avoided, and the smoothness of the matching is improved.

In order to better support the fixing frame 301, a free end of the top of the upper supporting cylinder 601 is provided with a supporting frame 6013, the supporting frame 6013 comprises two clamping jaws 60130 arranged at intervals in the radial direction of the upper supporting cylinder 601, and a groove part for an object to be supported (the fixing frame 301) to be embedded in is formed at the top of each clamping jaw 60130. The two grooves are preferably parallel to each other. The mounting block 6011 is located on the same side of the upper support cylinder 601 as one of the jaws 60130 of the support frame 6013 so that the support leg mechanism has a minimum mounting thickness after being installed.

The telescopic rod structure is provided with an upper plug connector, a lower plug connector and an operating handle, and under the non-supporting state of nonuse, the telescopic rod structure can be clamped on the mounting feet of the fixing frame by respectively inserting the two plug connectors into the clamping holes of the fixing frame of the photovoltaic module, and can be packaged and transported along with the battery module; when needs support, only need the operation handle can be followed the mount with telescopic link structure and pull down, can support it at the mount back the very first time, both simplified packing and transportation, also saved manpower and materials, improved photovoltaic module's the efficiency of buildding and maintaining.

The embodiment of the invention also provides a vehicle-mounted photovoltaic power generation device which comprises the truck 1 and the step-by-step unfolding and folding photovoltaic support, wherein the step-by-step unfolding and folding photovoltaic support is borne on a bearing part of the truck 1 through the basic bearing auxiliary beam 10.

The embodiment of the invention also provides a building method of the vehicle-mounted photovoltaic power generation device, which comprises the following steps:

controlling the locking pressure cylinder 42 to contract, and releasing the locking of the photovoltaic modules 30 on the two sides by the locking mechanism 40;

controlling the folding pressure cylinder 50 to extend, controlling the first telescopic mechanisms 31 to contract, and respectively unfolding the photovoltaic modules 30 towards two sides of the cabin body 20, so that the plurality of rotatably connected photovoltaic units of each photovoltaic module 30 are in a first state of a tiled spliced plate shape;

operating the operating handle 606 to remove the support leg mechanism 60 on the back of the photovoltaic module 30 and support the photovoltaic module 30 between the ground and the ground;

the second expansion mechanism 32 on the back of each battery pack 302 is activated to expand the battery pack 302 so that the battery pack 302 is supported on the holder 301 in an inclined manner.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims

1. The step-by-step unfolding and folding photovoltaic support is characterized by comprising a basic bearing secondary beam (10), a cabin body (20) fixed on the upper surface of the basic bearing secondary beam (10), two folding photovoltaic assemblies (30) and a locking mechanism (40) arranged on the cabin body (20), wherein the cabin body (20) is used for accommodating and connecting electrical elements of the photovoltaic assemblies (30), the two photovoltaic assemblies (30) are respectively and rotatably arranged on the basic bearing secondary beam (10) and positioned at two sides of the cabin body (20), and the locking mechanism (40) comprises two locking pieces (41) respectively extending out of two sides of the cabin body (20); the photovoltaic component (30) comprises a plurality of photovoltaic units which are rotatably connected and have a first state of unfolding a spliced plate shape in a flat state and a second state of folding a plurality of laminated plate shapes, and in the second state, the photovoltaic component (30) stands on the foundation load-bearing secondary beam (10); the locking piece (41) is used for locking the photovoltaic module (30) when the photovoltaic module (30) stands on the foundation bearing secondary beam (10).

2. The step-by-step unfolding folding photovoltaic support according to claim 1, characterized in that each photovoltaic unit comprises a fixed frame (301) and a battery assembly (302) arranged on the front face of said fixed frame (301), the fixed frames (301) of two adjacent photovoltaic units are hinged to each other, and the fixed frame (301) of the photovoltaic unit at the end is rotatably connected with said foundation load-bearing secondary beam (10); photovoltaic module (30) still include a plurality of first telescopic machanism (31), every two vicinities are connected respectively at the both ends of first telescopic machanism (31) photovoltaic unit mount (301) for drive two vicinities mount (301) relatively rotate and change fold condition.

3. The step-by-step unfolded and folded photovoltaic bracket as recited in claim 2, wherein the fixing frame (301) comprises two cross beams (3011) arranged at intervals along the length direction of the photovoltaic unit and a middle beam (3012) connected between two adjacent cross beams (3011), the cross beam (3011) of the fixing frame (301) at the non-free end is provided with a support block (30110) on the front side, the free end of the support block (30110) is farther away from the middle beam (3012) relative to the surface of the battery assembly (302), and the support block (30110) is used for abutting against the cross beam (3011) of the adjacent photovoltaic unit in the second state.

4. The step-by-step unfolded and folded photovoltaic bracket as recited in claim 3, characterized in that the back surface of the battery assembly (302) is rotatably connected with one of the cross beams (3011), and the rotating shaft direction of the battery assembly (302) is consistent with the length direction of the cross beam (3011); photovoltaic module (30) still include second telescopic machanism (32), second telescopic machanism (32) one end with the back of battery pack (302) is rotationally connected, and the other end is articulated mount (301) to change at flexible in-process the inclination of battery pack (302).

5. The step-by-step unfolding and folding photovoltaic bracket as recited in claim 4, characterized in that the back surface of the battery assembly (302) is provided with an upper slide (30200) in the shape of a long hole extending along the length direction of the battery assembly (302), and the side of the fixed frame (301) facing the battery assembly (302) is provided with a lower slide (30100) extending along the length direction thereof; the lower slideway (30100) is arranged on one side of the hinged part of the second telescopic mechanism (32) on the fixed frame (301), and the lower slideway (30100) extends towards the battery component (302) in an inclined way from the hinged part on the fixed frame (301) and is open towards one end of the battery component (302); the end part of the second telescopic mechanism (32) connected with the battery pack (302) is provided with a rotating shaft (321) perpendicular to the second telescopic mechanism (32) and a bearing (322) connected to the end part of the rotating shaft (321), the rotating shaft (321) is arranged in the upper slideway (30200), and the bearing (322) is used for being positioned in the lower slideway (30100) when the second telescopic mechanism (32) is completely contracted and rolling along the lower slideway (30100) towards the open end of the lower slideway (30100) until being separated from the open end in the process of extending the second telescopic mechanism (32).

6. The step-by-step unfolding folding photovoltaic bracket as recited in claim 5, characterized in that two first guide blocks (3020) are protruded from the back of the battery pack (302) and spaced apart from each other in the width direction of the photovoltaic unit, two second guide blocks (3010) corresponding to the two first guide blocks (3020) are protruded from the fixed frame (301), the upper sliding way (30200) is opened on the first guide blocks (3020), the lower sliding way (30100) is opened on the second guide blocks (3010) and is arranged between the hinge point of the second telescopic mechanism (32) on the fixed frame (301) and the rotary connection point of the battery pack (302) and the cross beam (3011); when the second telescopic mechanism (32) is completely contracted, two first guide blocks (3020) are positioned between two second guide blocks (3010), the rotating shaft (321) is positioned at one end of the upper slide way (30200) far away from the rotating connection part of the battery pack (302) and the cross beam (3011), and the bearing (322) is positioned at the non-open end of the lower slide way (30100).

7. The step-by-step unfolding folding photovoltaic bracket according to claim 2, wherein the photovoltaic module (30) further comprises a force arm unit, the force arm unit comprises a driving arm (33) and a supporting arm (34), one end of the supporting arm (34) is hinged to the driving arm (33), the other end of the supporting arm is hinged to the fixing frame (301), and two ends of the driving arm (33) are respectively hinged to the first telescopic mechanism (31) and another adjacent fixing frame (301).

8. The step-by-step unfolding folding photovoltaic support according to any one of claims 2 to 7, further comprising a plurality of supporting leg mechanisms (60), wherein the supporting leg mechanisms (60) are detachably arranged on the fixing frames (301) and used for supporting the back of each fixing frame (301) in the first state.

9. A vehicle-mounted photovoltaic power generation device, characterized by comprising a truck (1) and the step-by-step unfolded and folded photovoltaic support of any one of claims 1 to 8, wherein the step-by-step unfolded and folded photovoltaic support is borne on a bearing part of the truck (1) through the basic bearing secondary beam (10).

10. A building method of a vehicle-mounted photovoltaic power generation device is characterized by comprising the following steps:

respectively unfolding the photovoltaic modules (30) towards two sides of the cabin body (20) to enable a plurality of rotatably connected photovoltaic units of each photovoltaic module (30) to be in a first state of a tiled spliced plate shape;

taking down the supporting leg mechanism (60) on the back of the photovoltaic module (30) and supporting the supporting leg mechanism between the photovoltaic module (30) and the ground;

the second expansion mechanism (32) on the back of each battery pack (302) is activated to support the battery pack (302) on the holder (301) in an inclined manner.