Portable photovoltaic power generation device

Abstract

The utility model provides a portable photovoltaic power generation device. The portable photovoltaic power generation device comprises a transmission line; the photovoltaic module is electrically connected with the transmission line; the change-over switch is arranged on the transmission line and used for switching the connection modes of the photovoltaic module and the transmission line, and the connection modes comprise series connection and / or parallel connection; and the protection part is arranged on the change-over switch and is used for protecting the photovoltaic module from being damaged when the photovoltaic module is shielded or breaks down. According to the portable photovoltaic power generation device provided by the utility model, switching between series connection and parallel connection is carried out by arranging the change-over switch, rapid switching can be realized, and the switching efficiency is improved. The photovoltaic module can be protected from being damaged when the photovoltaic module is shielded or breaks down, a bypass diode does not need to be arranged on each single board of the photovoltaic module, the number of the bypass diodes is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, and more specifically, to a portable photovoltaic power generation device. Background Art

[0002] At present, the series-parallel switching method of photovoltaic solar panels is achieved by additionally setting parallel buses and series buses for series-parallel switching, and this switching method has low efficiency. Moreover, in related technologies, in order to improve the power of photovoltaic modules, usually the overall module power is increased by increasing the size of a single photovoltaic panel or the number of folds. However, this method requires bypass diodes to be provided in the junction boxes of each photovoltaic panel to prevent damage to the photovoltaic panels. Since bypass diodes need to be provided on each photovoltaic panel, the cost is increased.

[0003] Therefore, how to design a portable photovoltaic power generation device that is convenient for switching between series and parallel and has a low cost has become an urgent problem to be solved at present. Summary of the Utility Model

[0004] The utility model aims to at least solve the problems of low switching efficiency and high cost in the series and parallel connection of a photovoltaic power generation device.

[0005] To this end, a first aspect of the utility model provides a portable photovoltaic power generation device.

[0006] In view of this, a first aspect of the utility model proposes a portable photovoltaic power generation device, including: a transmission line; a photovoltaic module electrically connected to the transmission line; a switching switch disposed on the transmission line for switching the connection mode between the photovoltaic module and the transmission line, where the connection modes include series and / or parallel; and a protection component disposed on the switching switch for protecting the photovoltaic module from being damaged when the photovoltaic module is blocked or fails.

[0007] The portable photovoltaic power generation device provided by the utility model includes a transmission line, a photovoltaic module, a switching switch, and a protection component. The photovoltaic module is electrically connected to the transmission line. The switching switch is arranged on the transmission line and can switch the connection mode between the photovoltaic module and the transmission line. For example, the series connection mode between the transmission line and the photovoltaic module can be switched to a parallel connection mode, or the parallel connection mode between the transmission line and the photovoltaic module can be switched to a series connection mode. It can be understood that in the actual application process, due to voltage requirements, the photovoltaic module and the transmission line are often switched between series and parallel to meet the actual needs. Therefore, compared with the method of additionally setting series buses and parallel buses for switching in the related art, the present application can achieve fast switching and improve the switching efficiency by setting a switching switch for series and parallel switching. At the same time, since a protection component is arranged on the switching switch of the present application, it can protect the photovoltaic module from being damaged when the photovoltaic module is blocked or fails. Therefore, it is not necessary to set bypass diodes on each single board of the photovoltaic module, thereby reducing the number of bypass diodes set and lowering the cost. The reason why the protection component arranged on the switching switch of the present application can protect the photovoltaic module is that the entire photovoltaic module is connected to the transmission line through the switching switch. Therefore, the protection component can play a protective role for the entire photovoltaic module, and thus it is not necessary to set bypass diodes on each single board, thereby saving costs.

[0008] The portable photovoltaic power generation device provided by the utility model may further have the following additional technical features:

[0009] In some embodiments, optionally, the protection component includes at least one of a bypass diode, a smart diode, a micro-inverter, and an optimizer.

[0010] In these embodiments, the protection component includes at least one of a bypass diode, a smart diode, a micro-inverter, and an optimizer. Among them, preferably, the protection component can be a bypass diode. When a certain part of the photovoltaic module stops generating electricity due to shadow occlusion or failure, the bypass diode conducts, allowing the current to bypass the faulty part and continue to flow, thus not affecting the power generation of other normal components.

[0011] In some embodiments, optionally, the protection component is arranged in parallel with the switching switch.

[0012] In these embodiments, the protection component can be arranged in parallel with the switching switch, so as to ensure that the current can bypass the faulty component, protect the power generation efficiency of other normal components, and at the same time protect the bypassed component (the bypassed component refers to the component that cannot work normally due to shadow occlusion, damage, or performance degradation) from being damaged.

[0013] In some embodiments, optionally, the switching switch includes a first connection end and a second connection end. The first connection end is connected to the transmission line, and the second connection end is connected to the photovoltaic module. The protection component is disposed at the second connection end.

[0014] In these embodiments, the switching switch includes a first connection end and a second connection end. The first connection end is connected to the transmission line, and the second connection end is connected to the photovoltaic module. The protection component is disposed at the second connection end, that is, the protection component is disposed at one end close to the photovoltaic module, which is beneficial to the arrangement of the protection component.

[0015] In some embodiments, optionally, the transmission line includes a first bus bar and a second bus bar. The first connection end includes a first connection head and a second connection head. The first connection head is electrically connected to one of the first bus bar and the second bus bar. The second connection head can be switched between a first position and a second position. When the second connection head is in the first position, the second connection head is electrically connected to the first bus bar. When the second connection head is in the second position, the second connection head is electrically connected to the second bus bar.

[0016] In these embodiments, the transmission line includes a first bus bar and a second bus bar. The first connection end includes a first connection head and a second connection head. The first connection head is electrically connected to one of the first bus bar and the second bus bar. The second connection head can be switched between a first position and a second position. When the second connection head is in the first position, the second connection head is electrically connected to the first bus bar. When the second connection head is in the second position, the second connection head is electrically connected to the second bus bar. With this arrangement, by setting the second connection head to be switchable between the first position and the second position, the switching between series connection and parallel connection can be achieved. For example, when the second connection head is in the first position, the photovoltaic module and the transmission line are in parallel connection. When the second connection head is in the second position, the photovoltaic module and the transmission line are in series connection.

[0017] In some embodiments, optionally, the portable photovoltaic power generation device further includes: an energy storage device, electrically connected to the transmission line, for storing the electric energy transmitted by the transmission line.

[0018] In these embodiments, the portable photovoltaic power generation device further includes an energy storage device. The energy storage device is electrically connected to the transmission line and can store the electric energy transmitted by the transmission line, and then supply power to the user.

[0019] In some embodiments, optionally, the portable photovoltaic power generation device further includes: an output terminal, disposed on the transmission line, and the transmission line and the energy storage device are electrically connected through the output terminal.

[0020] In these embodiments, the portable photovoltaic power generation device further includes an output terminal. The output terminal is disposed on the transmission line, and the transmission line and the energy storage device are electrically connected through the output terminal. The arrangement of the output terminal can facilitate the connection between the transmission line and the energy storage device and improve the connection stability.

[0021] In some embodiments, optionally, the portable photovoltaic power generation device further includes: a voltage detection module disposed on the transmission line for detecting the voltage on the transmission line; a control module connected to the voltage detection module for controlling the switching of the switching switch according to the voltage detected by the voltage detection module.

[0022] In these embodiments, the portable photovoltaic power generation device further includes a voltage detection module and a control module. The voltage detection module is disposed on the transmission line and can detect the voltage on the transmission line. The control module is connected to the voltage detection module and can control the switching of the switching switch according to the voltage detected by the voltage detection module. By providing the voltage detection module and the control module, automatic circuit switching can be achieved, reducing user operation and improving user experience.

[0023] Among them, when the voltage reaches a preset value, the control module controls the switching of the switching switch, and the preset value can be set by the user himself.

[0024] In some embodiments, optionally, the number of photovoltaic modules is multiple, and any one of the photovoltaic modules includes a plurality of photovoltaic panels, and the plurality of photovoltaic panels are connected to each other to form a foldable structure.

[0025] In these embodiments, the number of photovoltaic modules is multiple, and the multiple photovoltaic modules are connected to the transmission line. Any one of the photovoltaic modules includes a plurality of photovoltaic panels, and the plurality of photovoltaic panels are connected to each other to form a foldable structure, so that the power of the photovoltaic module can be increased and the power generation efficiency can be improved. Moreover, since it is a foldable structure, it is also convenient for the storage of the photovoltaic module.

[0026] In some embodiments, optionally, the number of switching switches is multiple, and the switching switches correspond to the photovoltaic modules one by one.

[0027] In these embodiments, the number of switching switches is multiple, and the switching switches correspond to the photovoltaic modules one by one, so that series and parallel switching can be performed according to the actual situation of each photovoltaic module to ensure the normal power generation of other photovoltaic modules.

[0028] The additional aspects and advantages of the present utility model will become apparent in the following description section, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0030] Figure 1 FIG. 1 shows one of the structural schematic diagrams of the portable photovoltaic power generation device according to an embodiment of the present utility model;

[0031] Figure 2 Figure 1 shows a partial structural schematic diagram of a portable photovoltaic power generation device according to an embodiment of the present invention;

[0032] Figure 3 Figure 2 shows a second structural schematic diagram of a portable photovoltaic power generation device according to an embodiment of the present invention.

[0033] Among them, Figures 1 to 3 the corresponding relationship between the reference numerals and the component names in the figures is as follows:

[0034] 1 transmission line, 12 first busbar, 14 second busbar, 2 photovoltaic module, 22 photovoltaic panel, 24 positive electrode of photovoltaic module, 26 negative electrode of photovoltaic module, 3 changeover switch, 32 first connection end, 322 first connector, 324 second connector, 34 second connection end, 342 third connector, 344 fourth connector, 4 protection component, 42 bypass diode, 5 energy storage device, 6 output terminal, 7 voltage detection module, 8 control module. Detailed implementation manners

[0035] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0036] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0037] Next, refer to Figures 1 to 3 to describe a portable photovoltaic power generation device according to some embodiments of the present invention.

[0038] According to an embodiment of the first aspect of the present invention, as shown in Figure 1 , Figure 2 and Figure 3 , a portable photovoltaic power generation device is provided, which includes a transmission line 1, a photovoltaic module 2, a changeover switch 3 and a protection component 4. The photovoltaic module 2 is electrically connected to the transmission line 1. The changeover switch 3 is disposed on the transmission line 1 and is used to switch the connection mode between the photovoltaic module 2 and the transmission line 1, where the connection mode includes series connection and / or parallel connection. The protection component 4 is disposed on the changeover switch 3 and is used to protect the photovoltaic module 2 from being damaged when the photovoltaic module 2 is blocked or fails.

[0039] The portable photovoltaic power generation device provided by the present utility model includes a transmission line 1, a photovoltaic module 2, a changeover switch 3, and a protection component 4. The photovoltaic module 2 is electrically connected to the transmission line 1. The changeover switch 3 is arranged on the transmission line 1 and can switch the connection mode between the photovoltaic module 2 and the transmission line 1. For example, the series connection mode of the transmission line 1 and the photovoltaic module 2 can be switched to a parallel connection mode, or the parallel connection mode between the transmission line 1 and the photovoltaic module 2 can be switched to a series connection mode. It can be understood that in the actual application process, due to voltage requirements, the photovoltaic module 2 and the transmission line 1 are often switched between series and parallel to meet the actual needs. Therefore, compared with the method of additionally setting series buses and parallel buses for switching in the related art, the present application can achieve fast switching and improve the switching efficiency by setting the changeover switch 3 for series and parallel switching. At the same time, since the present application is provided with a protection component 4 on the changeover switch 3, it can protect the photovoltaic module 2 from being damaged when the photovoltaic module 2 is blocked or fails. Therefore, there is no need to set bypass diodes on each single board of the photovoltaic module 2, thereby reducing the number of bypass diodes set and lowering the cost. The reason why the protection component 4 can protect the photovoltaic module 2 by setting it on the changeover switch 3 is that the entire photovoltaic module 2 is connected to the transmission line 1 through the changeover switch 3. Therefore, the protection component 4 can protect the entire photovoltaic module 2, so there is no need to set bypass diodes on each single board, thereby saving costs.

[0040] In some embodiments, optionally, the protection component 4 includes at least one of a bypass diode 42, a smart diode, a micro-inverter, and an optimizer.

[0041] In these embodiments, the protection component 4 includes at least one of a bypass diode 42, a smart diode, a micro-inverter, and an optimizer. Among them, preferably, the protection component 4 can be a bypass diode. When a certain part of the photovoltaic module 2 stops generating electricity due to shadow occlusion or failure, the bypass diode conducts, allowing the current to bypass the faulty part and continue to flow, thus not affecting the power generation of other normal components.

[0042] In some embodiments, optionally, the protection component 4 is arranged in parallel with the changeover switch 3.

[0043] In these embodiments, the protection component 4 can be arranged in parallel with the changeover switch 3, so as to ensure that the current can bypass the faulty component, protect the power generation efficiency of other normal components, and at the same time protect the bypassed component (the bypassed component refers to the component that cannot work normally due to shadow occlusion, damage, or performance degradation) from being damaged.

[0044] In some embodiments, optionally, the switching switch 3 includes a first connection end 32 and a second connection end 34. The first connection end 32 is connected to the transmission line 1, and the second connection end 34 is connected to the photovoltaic module 2. The protection component 4 is disposed at the second connection end 34.

[0045] In these embodiments, the switching switch 3 includes a first connection end 32 and a second connection end 34. The first connection end 32 is connected to the transmission line 1, and the second connection end 34 is connected to the photovoltaic module 2. The protection component 4 is disposed at the second connection end 34, that is, the protection component 4 is disposed at one end close to the photovoltaic module 2, which is beneficial to the arrangement of the protection component 4.

[0046] In some embodiments, optionally, the protection component 4 is disposed on the photovoltaic module 2 and is located at the connection between the photovoltaic module 2 and the transmission line 1.

[0047] In some embodiments, optionally, the transmission line 1 includes a first bus bar 12 and a second bus bar 14. The first connection end 32 includes a first connection head 322 and a second connection head 324. The first connection head 322 is electrically connected to one of the first bus bar 12 and the second bus bar 14. The second connection head 324 can be switched between a first position and a second position. When the second connection head 324 is in the first position, the second connection head 324 is electrically connected to the first bus bar 12. When the second connection head 324 is in the second position, the second connection head 324 is electrically connected to the second bus bar 14.

[0048] In these embodiments, the transmission line 1 includes a first bus bar 12 and a second bus bar 14. The first connection end 32 includes a first connection head 322 and a second connection head 324. The first connection head 322 is electrically connected to one of the first bus bar 12 and the second bus bar 14. The second connection head 324 can be switched between a first position and a second position. When the second connection head 324 is in the first position, the second connection head 324 is electrically connected to the first bus bar 12. When the second connection head 324 is in the second position, the second connection head 324 is electrically connected to the second bus bar 14. With this arrangement, by setting the second connection head 324 to be switchable between the first position and the second position, the switching between series connection and parallel connection can be achieved. For example, when the second connection head 324 is in the first position, the photovoltaic module 2 and the transmission line 1 are in parallel connection. When the second connection head is in the second position, the photovoltaic module 2 and the transmission line 1 are in series connection.

[0049] In some embodiments, optionally, the first bus bar 12 is the positive bus bar and the second bus bar 14 is the negative bus bar.

[0050] In some embodiments, optionally, the second connection end 34 includes a third connection head 342 and a fourth connection head 344. The third connection head 342 is electrically connected to the first connection head 322, and the fourth connection head 344 is electrically connected to the second connection head 324. The positive electrode 24 of the photovoltaic module is connected to the fourth connection head 344, and the negative electrode 26 of the photovoltaic module is connected to the third connection head 342.

[0051] In some embodiments, optionally, the positive electrode of the bypass diode is electrically connected to the fourth connection head 344, and the negative electrode of the bypass diode is electrically connected to the third connection head 342.

[0052] In some embodiments, optionally, the portable photovoltaic power generation device further includes: a storage device 5, electrically connected to the transmission line 1, for storing the electric energy transmitted by the transmission line 1.

[0053] In these embodiments, the portable photovoltaic power generation device further includes a storage device 5. The storage device 5 is electrically connected to the transmission line 1 and can store the electric energy transmitted by the transmission line 1, thereby supplying power to the user.

[0054] In some embodiments, optionally, the portable photovoltaic power generation device further includes: an output terminal 6, disposed on the transmission line 1, and the transmission line 1 and the storage device 5 are electrically connected through the output terminal 6.

[0055] In these embodiments, the portable photovoltaic power generation device further includes an output terminal 6. The output terminal 6 is disposed on the transmission line 1, and the transmission line 1 and the storage device 5 are electrically connected through the output terminal 6. The setting of the output terminal 6 can facilitate the connection between the transmission line 1 and the storage device 5 and improve the connection stability.

[0056] In some embodiments, optionally, the output terminal 6 includes an MC4 connector and a DC8020 connector.

[0057] In some embodiments, optionally, the portable photovoltaic power generation device further includes: a voltage detection module 7, disposed on the transmission line 1, for detecting the voltage on the transmission line 1; a control module 8, connected to the voltage detection module 7, for controlling the switching of the switching switch 3 according to the voltage detected by the voltage detection module 7.

[0058] In these embodiments, the portable photovoltaic power generation device further includes a voltage detection module 7 and a control module 8. The voltage detection module 7 is disposed on the transmission line 1 and can detect the voltage on the transmission line 1. The control module 8 is connected to the voltage detection module 7 and can control the switching of the switching switch 3 according to the voltage detected by the voltage detection module 7. By setting the voltage detection module 7 and the control module 8, automatic circuit switching can be realized, reducing the user's operation and improving the user experience.

[0059] Among them, when the voltage reaches a preset value, the control module 8 controls the change-over switch 3 to switch, and the preset value can be set by the user himself.

[0060] In some embodiments, optionally, the number of photovoltaic modules 2 is multiple, and any one of the photovoltaic modules 2 includes a plurality of photovoltaic panels 22, and the plurality of photovoltaic panels 22 are connected to each other to form a foldable structure.

[0061] In these embodiments, the number of photovoltaic modules 2 is multiple, and the multiple photovoltaic modules 2 are connected to the transmission line 1. Any one of the photovoltaic modules 2 includes a plurality of photovoltaic panels 22, and the plurality of photovoltaic panels 22 are connected to each other to form a foldable structure, so that the power of the photovoltaic module 2 can be increased, the power generation efficiency can be improved, and since it is a foldable structure, it is also convenient for the storage of the photovoltaic module 2.

[0062] In some embodiments, optionally, the number of change-over switches 3 is multiple, and the change-over switches 3 correspond to the photovoltaic modules 2 one by one.

[0063] In these embodiments, the number of change-over switches 3 is multiple, and the change-over switches 3 correspond to the photovoltaic modules 2 one by one, so that series and parallel switching can be performed according to the actual situation of each photovoltaic module 2 to ensure the normal power generation of other photovoltaic modules 2.

[0064] In some embodiments, optionally, the power of a single-board (single photovoltaic panel) module is within 100W, and multiple single-boards are connected in a full parallel structure to meet a high-power portable module of 400W - 600W, and the folding and storage function is satisfied through structural parts, and the overall size is the same as the area of the single-board.

[0065] In some embodiments, optionally, the change-over switch includes a bus bar with switch control for series and parallel connection, and multiple components (photovoltaic modules) can be controlled to be connected in series or in parallel on the bus bar.

[0066] In some embodiments, optionally, bypass diodes are installed at each joint position of the bus bar to provide a bypass function for the components, and the final output end uses an MC4 or DC8020 connector.

[0067] The beneficial effects of the present application are as follows:

[0068] 1. The high-power portable module has a small size, and the storage area size of 400W - 600W is the same as that of 100W, which is convenient for storage and transportation.

[0069] 2. The single-boards of the high-power portable module are controlled by a bus bar and controlled by a switch, and series and parallel connections can be quickly realized without the need to separately configure a parallel bus bar or a series bus bar.

[0070] 3. In the high-voltage system formed by series connection during the array process, bypass diodes are installed at the internal joints of the busbar ends. After a single component generates electricity abnormally, the current generated by other systems will continue to flow to the busbar output end through the bypass diodes, without affecting the power generation efficiency of other components in the entire array. At the same time, there is no need to install bypass diodes separately for the junction boxes of the components, saving materials and installation costs.

[0071] In a specific embodiment, as Figure 3 shown, each photovoltaic component is a high-power portable component with a power of 400W - 600W. The positive electrode of the first component is connected to the positive output end of the busbar, the negative electrode of the first component is connected to the negative electrode of the busbar, and a bypass diode is connected in parallel to the positive and negative electrodes of the busbar.

[0072] The positive and negative electrodes of the second component can be selectively connected to the positive and negative electrodes of the busbar. Since the output port needs to meet high voltage, the output end is a DC2050 or MC4 universal connector.

[0073] The specific switching method is as Figure 2 and Figure 3 shown:

[0074] Starting from the second one, at the corresponding busbar joint positions of the subsequent photovoltaic components, in addition to configuring bypass diodes, a switch is also configured. A is the switch contact, and the contact is connected to the negative wire of the first component.

[0075] When two components need to be connected in series, the A contact is connected to the B contact of the negative busbar in the same way, and is in an open circuit relationship with C;

[0076] When two components need to be connected in parallel, the A contact is connected to the C contact of the positive busbar in the same way, and is in an open circuit relationship with B.

[0077] In the present utility model, the term "a plurality" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed", etc. should all be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0078] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0079] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable photovoltaic power generation device, characterized in that, Comprising: A transmission line; A photovoltaic module, electrically connected to the transmission line; A switching switch, disposed on the transmission line, for switching the connection mode between the photovoltaic module and the transmission line, wherein the connection mode includes series connection and / or parallel connection; A protection component, disposed on the switching switch, for protecting the photovoltaic module from being damaged when the photovoltaic module is blocked or fails.

2. The portable photovoltaic power generation device according to claim 1, wherein The protection component includes at least one of a bypass diode, an intelligent diode, a micro-inverter, and an optimizer.

3. The portable photovoltaic power generation device according to claim 1, wherein The protection component is disposed in parallel with the switching switch.

4. The portable photovoltaic power generation device according to claim 1, wherein The switching switch includes a first connection end and a second connection end. The first connection end is connected to the transmission line, the second connection end is connected to the photovoltaic module, and the protection component is disposed at the second connection end.

5. The portable photovoltaic power generation device according to claim 4, wherein The transmission line includes a first bus bar and a second bus bar. The first connection end includes a first connection head and a second connection head. The first connection head is electrically connected to one of the first bus bar and the second bus bar. The second connection head can be switched between a first position and a second position. When the second connection head is in the first position, the second connection head is electrically connected to the first bus bar. When the second connection head is in the second position, the second connection head is electrically connected to the second bus bar.

6. The portable photovoltaic power generation device according to any one of claims 1 to 5, characterized in that, Further comprising: An energy storage device, electrically connected to the transmission line, for storing the electric energy transmitted by the transmission line.

7. The portable photovoltaic power generation device according to claim 6, characterized in that, Further comprising: An output terminal, disposed on the transmission line, and the transmission line and the energy storage device are electrically connected through the output terminal.

8. The portable photovoltaic power generation device according to any one of claims 1 to 5, characterized in that, Further comprising: A voltage detection module, disposed on the transmission line, for detecting the voltage on the transmission line; A control module, connected to the voltage detection module, for controlling the switching of the switching switch according to the voltage detected by the voltage detection module.

9. The portable photovoltaic power generation device according to any one of claims 1 to 5, wherein The number of the photovoltaic modules is multiple. Any one of the photovoltaic modules includes multiple photovoltaic panels, and the multiple photovoltaic panels are connected to each other to form a foldable structure.

10. The portable photovoltaic power generation device according to claim 9, wherein The number of the switching switches is multiple, and the switching switches correspond to the photovoltaic modules one by one.

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