Photovoltaic energy storage device and control method thereof

Abstract

A photovoltaic energy storage device and a control method thereof are disclosed. In one embodiment of the present application, the photovoltaic energy storage device may include: a photovoltaic panel assembly, a fixing portion, a telescopic portion, a driving portion, a controller, and a battery pack. The photovoltaic energy storage device of the embodiment of the present application has high integration, small overall volume, easy assembly, convenient transportation, reusable, groupable configuration, and flexible application.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic energy storage, and in particular to a photovoltaic energy storage device and a control method thereof. Background Art

[0002] The photovoltaic power generation and power supply application system uses the electricity generated by photovoltaic panels to directly provide it to users, and the excess electricity is stored in batteries. The photovoltaic power storage solution has the characteristics of safety, pollution-free, and sufficient resources. It is being widely popularized and promoted due to its advantages such as low operating costs and short construction period.

[0003] At present, photovoltaic energy storage systems need to be customized according to the on-site environment, climate and other conditions of specific scenarios. Once installed and fixed, they are difficult to move. Not only are on-site deployment and installation inefficient, time-consuming and difficult, but photovoltaic energy storage systems cannot be reused in other scenarios, resulting in high deployment costs and total equipment costs for photovoltaic energy storage systems. Summary of the invention

[0004] In order to solve the above technical problems, it is desired to provide a photovoltaic energy storage device and a control method thereof that is easy to install, flexibly deployable, reusable and suitable for various application scenarios.

[0005] According to one aspect of the present application, a photovoltaic energy storage device is provided, comprising: a photovoltaic panel assembly, a fixing portion, a telescopic portion, a driving portion, a controller and a battery pack; wherein,

[0006] A photovoltaic panel assembly, comprising a first photovoltaic panel and a second photovoltaic panel, wherein the first photovoltaic panel is fixed to a first fixing frame of the fixing portion, and the second photovoltaic panel is fixed to a second fixing frame of the telescopic portion;

[0007] A fixing part, comprising a fixing body and a first fixing frame matching the first photovoltaic panel, wherein the first fixing frame is fixed to the top of the fixing body, the fixing body is provided with a side plate on one side and an opening on the other side, and a cavity in the fixing body can accommodate the telescopic part;

[0008] The telescopic part includes a second fixing frame and a support frame whose inner dimensions match the second photovoltaic panel and whose outer dimensions match the opening of the fixing body, wherein the top end of the support frame is mechanically connected to the second fixing frame and the bottom end is mechanically connected to the rotating shaft of the driving part;

[0009] The driving part includes a rotating shaft, a stepping motor, and a driving bracket, wherein the rotating shaft is connected to the driving end of the stepping motor and rotates under the drive of the stepping motor; the stepping motor and the rotating shaft are fixed on the driving bracket, and the driving bracket is fixed to the bottom end of the fixed body;

[0010] A controller, fixed to the inner side of the side plate of the fixed body, electrically connected to the first photovoltaic panel and the second photovoltaic panel in the photovoltaic panel assembly, electrically connected to the battery pack, and electrically connected to the stepping motor;

[0011] The battery pack is fixed to the inner side of the side plate of the fixed body.

[0012] According to one aspect of the present application, a control method for a photovoltaic energy storage device is provided, comprising:

[0013] When the battery pack is charged and / or a load is connected, the photovoltaic energy storage operation is started, and the driving device is controlled to drive the telescopic portion to extend out of the fixed body, so that the telescopic portion enters an extended state;

[0014] When the battery pack is fully charged and / or the load is disconnected, the photovoltaic energy storage operation is stopped, and the driving device is controlled to drive the telescopic part to retract into the cavity of the fixed body, so that the telescopic part enters a contracted state.

[0015] According to the embodiments of the present application, the photovoltaic energy storage device automatically extends or contracts part of the photovoltaic panel, has high integration, small overall volume, low cost, easy assembly, convenient transportation, reusable, group configuration, and flexible application, which not only effectively reduces on-site deployment costs, improves installation efficiency, and occupies less space, but also greatly improves the utilization rate of the photovoltaic energy storage equipment itself and greatly reduces its overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an exemplary photovoltaic energy storage device in an unfolded state according to an embodiment of the present application;

[0017] Figure 2 This is a schematic structural diagram of an exemplary photovoltaic energy storage device in a contracted state according to an embodiment of the present application;

[0018] Figure 3 Schematic diagram of the circuit structure of the photovoltaic energy storage device according to the embodiment of the present application. DETAILED DESCRIPTION

[0019] The following will describe the embodiments of the present application in detail with reference to the accompanying drawings. It should be noted that, in the absence of conflict, the various embodiments and features therein in the present application can be combined with each other in any manner.

[0020] As mentioned above, photovoltaic energy storage equipment in related technologies has high deployment costs, high installation complexity and is not reusable. It is not only costly and has low equipment utilization, but also inconvenient to use.

[0021] The basic concept of the embodiments of the present application is to provide a photovoltaic energy storage device, which integrates a photovoltaic panel assembly, a battery pack, a controller, etc., adopts an integrated structure, and the photovoltaic panel assembly can be flexibly unfolded or retracted as needed. It has high integration, compact structure, small overall volume, low cost, easy assembly, convenient transportation, reusable, group configuration, and flexible application. It not only effectively reduces on-site deployment costs, improves installation efficiency, and occupies less space, but also greatly improves the utilization rate of the photovoltaic energy storage equipment itself and greatly reduces its overall cost.

[0022] The photovoltaic energy storage device of the embodiment of the present application can be applied to any applicable environment. In some examples, the embodiment of the present application can be applied to scenarios that require a small power generation and power supply system, such as municipal construction, communication maintenance, and energy mining. In addition, for scenarios that require a large power generation and power supply system, multiple sets of photovoltaic energy storage devices of the embodiment of the present application can be deployed to achieve this.

[0023] Figure 1 and Figure 2 The exemplary structure of the photovoltaic energy storage device of the present application is shown. Figure 1 , Figure 2 As shown, the photovoltaic energy storage device of the embodiment of the present application may include: a photovoltaic panel assembly 11, a fixing portion 12, a telescopic portion 13, a driving portion 14, a controller 15 and a battery pack 16. It should be noted that although Figure 2 Only some symbols are marked in the text, but it is understood that the symbols of other unmarked parts are the same as Figure 1 same.

[0024] The photovoltaic panel assembly 11 may include a first photovoltaic panel 111 and a second photovoltaic panel 112. The first photovoltaic panel 111 is fixed to a first fixing frame 121 of the fixing portion 12, and the second photovoltaic panel 112 may be fixed to a second fixing frame 131 of the telescopic portion 13. Here, the size of the first photovoltaic panel 111 may be slightly larger than the second photovoltaic panel 112, so that the second photovoltaic panel 112 can be stored in the fixing portion 12 in a retracted state, thereby reducing the overall volume of the photovoltaic energy storage device, which not only reduces the space occupied, but also facilitates the handling or movement of the photovoltaic energy storage device.

[0025] The fixing part 12 may include a fixing body 122 and a first fixing frame 121 matching the first photovoltaic panel 111. The first fixing frame 121 is fixed to the top of the fixing body 122. A side panel 123 is provided on one side of the fixing body 122 and an opening is provided on the other side. The cavity in the fixing body 122 can accommodate the telescopic part 13 and the opening matches the size of the second fixing frame 131.

[0026] In some examples, the first photovoltaic panel 111 can be fixed to the first fixing frame 121 by bolts. In some examples, the second photovoltaic panel 112 can be fixed to the second fixing frame 131 by bolts. Of course, the first photovoltaic panel 111 and / or the second photovoltaic panel 112 can also be fixed by means such as snaps.

[0027] In some examples, the photovoltaic panel assembly 11 includes at least one first photovoltaic panel 111 (e.g., one, two, three or more), and the fixing portion 12 may include at least one first fixing frame 121 (e.g., one, two, three or more) corresponding one-to-one with the at least one first photovoltaic panel 111. In some examples, the photovoltaic panel assembly 11 includes at least one second photovoltaic panel 112 (e.g., one, two, three or more), and the telescopic portion 13 may include at least one second fixing frame 131 (e.g., one, two, three or more) corresponding one-to-one with the at least one second photovoltaic panel 112. Although Figure 1 and Figure 2 Only two first photovoltaic panels 111, two first fixed frames 121, two second photovoltaic panels 112 and two second fixed frames 131 are shown, but it can be understood that in actual applications, the number of first photovoltaic panels and / or second photovoltaic panels in the photovoltaic panel assembly can be adjusted according to the different power requirements of the application scenario. For example, the number of second photovoltaic panels installed on the telescopic part can be less than 2 or more than 2 (that is, the number of second photovoltaic panels can be less than or equal to the number of second fixed frames), and the corresponding fixed part can also be installed with less than 2 or more than 2 first photovoltaic panels (the number of first photovoltaic panels can be less than or equal to the number of first fixed frames).

[0028] The telescopic portion 13 may include a second fixed frame 131 whose inner dimensions match the second photovoltaic panel 112 and whose outer dimensions match the opening of the fixed body 122, and a support frame 132 supporting the second fixed frame 131, wherein the top end of the support frame 132 is mechanically connected to the second fixed frame 131, and the bottom end is mechanically connected to the rotating shaft 141 of the driving unit 14. In some examples, the support frame 132 may be fixedly connected to the rotating shaft 141 of the driving device 14 by screws. Of course, the support frame 132 may also be fixed to the rotating shaft 141 by means such as welding. The specific method of mechanical connection is not limited in the embodiments of the present application.

[0029] The driving part 14 may include a rotating shaft 141, a stepping motor 142, and a driving bracket 143. The rotating shaft 141 is connected to the driving end of the stepping motor 142 and rotates under the drive of the stepping motor 142. The stepping motor 142 and the rotating shaft 141 are fixed to the driving bracket 143, and the driving bracket 143 may be fixed to the bottom end of the fixed body 122. In some examples, the stepping motor 142 may be fixed to the driving bracket 143 by bolts. Of course, it may also be fixed by, for example, welding.

[0030] In some examples, when the rotating shaft 141 rotates out of the fixed body 122 , the supporting frame 132 is driven by the rotating shaft 141 to partially or completely extend the second fixing frame 131 out of the opening of the fixed body 122 so that the telescopic portion 13 enters the extended state.

[0031] In some examples, when the rotating shaft 141 rotates into the fixed body 122, the support frame 132 is driven by the rotating shaft 141 to partially or completely retract the second fixed frame 131 through the opening of the fixed body 122 into the cavity of the fixed body 122, so that the telescopic portion 13 enters a contracted state.

[0032] The controller 15 can be fixed to the inner side of the side plate 123 of the fixed body 122, and electrically connected to the battery pack 16 and the stepper motor 142. In some examples, the controller 15 can be, but is not limited to, a solar controller. In some examples, the controller 15 can also have a DC load connection terminal, which can directly provide DC power to the load on the one hand, and can be used to connect the AC inverter 17 on the other hand to provide DC power to the AC inverter 17.

[0033] The battery pack 16 may include a plurality of batteries, which may be fixed inside the side plate 123 of the fixed body 122 .

[0034] In some embodiments, the photovoltaic energy storage device may further include an AC inverter 17 . The AC inverter 17 may be fixed to the inner side of the side plate 123 of the fixed body 122 and electrically connected to the controller 15 .

[0035] Figure 3 The circuit structure of the photovoltaic energy storage device in the embodiment of the present application is shown. Figure 3 As shown, the photovoltaic panel assembly 11 is electrically connected to the controller 15, and the controller 15 is electrically connected to the battery pack 16 and the AC inverter 17 respectively. The controller 15 can supply power to the DC load, and the AC inverter 17 can supply power to the AC load. Among them, the main function of the photovoltaic panel assembly 11 is to complete the light-to-electricity conversion, and store the electric energy in the battery pack 16 through the controller 15. The battery pack 16 may include a battery pack, and its main function is to store electric energy. The controller 15 may be a solar controller, and its function is to complete the connection and communication between various electrical devices in the photovoltaic energy storage device, and control the charging and discharging of the battery pack 16. The main function of the AC inverter 17 is to convert DC power into AC output power, and directly provide it to the user side for use.

[0036] In some examples, the installation of the photovoltaic energy storage device may include: fixing the stepper motor to the drive device bracket by bolting, and then fixing the drive device bracket to the fixing device bottom plate to complete the assembly of the drive device part; fixing the photovoltaic panel assembly to the fixed part and the telescopic part respectively by bolting to complete the fixation of the photovoltaic panel assembly; fixing the telescopic part to the rotating shaft by fastening screws to complete the mechanical fixation of the fixed part and the telescopic part; fixing the battery pack, solar controller, AC inverter and other electrical equipment in turn by bolting to complete the mechanical fixation of all equipment; connecting the adjustment sleeve device to realize the communication function between various electrical equipment such as battery pack, solar controller, AC inverter and so on.

[0037] In actual applications, the number of photovoltaic energy storage devices required can be determined based on the power generation required by the application scenario, and the corresponding number of photovoltaic energy storage devices can be transported to the application scenario and placed on the ground. The system starts to operate, and the telescopic part automatically operates to unfold the photovoltaic panels and start generating electricity. After the power generation and supply work is completed, the telescopic part automatically retracts the photovoltaic panels and recovers the photovoltaic energy storage devices. Then, these photovoltaic energy storage devices can be transported or moved to the next application scenario according to the needs of the user.

[0038] An embodiment of the present application also provides a control method for the above-mentioned photovoltaic energy storage device, including: when the battery pack is charged and / or the load is connected, starting the photovoltaic energy storage operation, and controlling the driving device to drive the telescopic part to extend out of the fixed body so that the telescopic part enters an extended state; when the battery pack is fully charged and / or the load is disconnected, stopping the photovoltaic energy storage operation, and controlling the driving device to drive the telescopic part to retract into the cavity of the fixed body so that the telescopic part enters a contracted state.

[0039] The photovoltaic energy storage device of the embodiment of the present application has the following advantages:

[0040] 1. The photovoltaic energy storage device is an integrated device. The entire device can be directly transported to the user's site after assembly and can be put into operation after commissioning, which greatly reduces on-site construction costs and installation time.

[0041] 2. The photovoltaic energy storage device can automatically extend and retract the photovoltaic panels, thereby improving space utilization.

[0042] 3. The photovoltaic energy storage device has a compact structure, small size, is reusable and easy to transport. It can be easily and quickly transported to the next application scenario, saving time costs and total equipment costs.

[0043] 4. Multiple photovoltaic energy storage devices can be deployed in a distributed manner according to the needs of actual application scenarios to meet the needs of specific users.

[0044] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A photovoltaic energy storage device, It is characterized in that include: Photovoltaic panel assembly, fixing part, telescopic part, driving part, controller and battery pack; wherein, A photovoltaic panel assembly, comprising a first photovoltaic panel and a second photovoltaic panel, wherein the first photovoltaic panel is fixed to a first fixing frame of the fixing portion, and the second photovoltaic panel is fixed to a second fixing frame of the telescopic portion; A fixing part, comprising a fixing body and a first fixing frame matching the first photovoltaic panel, wherein the first fixing frame is fixed to the top of the fixing body, a side plate is provided on one side of the fixing body, and an opening is provided on the other side, a cavity in the fixing body can accommodate the telescopic part and the opening matches the size of the second fixing frame; The telescopic part includes a second fixing frame whose inner dimensions match the second photovoltaic panel and whose outer dimensions match the opening of the fixing body, and a support frame supporting the second fixing frame, wherein the top end of the support frame is mechanically connected to the second fixing frame and the bottom end is mechanically connected to the rotating shaft of the driving part; The driving part includes a rotating shaft, a stepping motor, and a driving bracket, wherein the rotating shaft is connected to the driving end of the stepping motor and rotates under the drive of the stepping motor; the stepping motor and the rotating shaft are fixed on the driving bracket, and the driving bracket is fixed to the bottom end of the fixed body; A controller, fixed to the inner side of the side plate of the fixed body, electrically connected to the first photovoltaic panel and the second photovoltaic panel in the photovoltaic panel assembly, electrically connected to the battery pack, and electrically connected to the stepping motor; The battery pack is fixed to the inner side of the side plate of the fixed body.

2. The photovoltaic energy storage device according to claim 1, It is characterized in that The photovoltaic panel assembly includes at least one of the first photovoltaic panels, and the fixing portion includes at least one first fixing frame corresponding to the at least one first photovoltaic panel.

3. The photovoltaic energy storage device according to claim 1, It is characterized in that The photovoltaic panel assembly includes at least one second photovoltaic panel, and the telescopic portion includes at least one second fixing frame corresponding to the at least one second photovoltaic panel.

4. The photovoltaic energy storage device according to claim 1, It is characterized in that The stepper motor is fixed to the driving bracket by bolts; and / or, the first photovoltaic panel is fixed to the first fixing frame by bolts; and / or, the second photovoltaic panel is fixed to the second fixing frame by bolts; and / or, the supporting frame is fixedly connected to the rotating shaft of the driving part by screws.

5. The photovoltaic energy storage device according to claim 1, It is characterized in that When the rotating shaft rotates out of the fixed body, the support frame is driven by the rotating shaft to partially or completely extend the second fixed frame out of the opening of the fixed body so that the telescopic part enters an extended state.

6. The photovoltaic energy storage device according to claim 1, It is characterized in that When the rotating shaft rotates inside the fixed body, the support frame, driven by the rotating shaft, partially or completely retracts the second fixed frame through the opening of the fixed body into the cavity of the fixed body, so that the telescopic part enters a contracted state.

7. The photovoltaic energy storage device according to claim 1, It is characterized in that Also includes: The AC inverter is fixed to the inner side of the side plate of the fixed body and is electrically connected to the controller.

8. The photovoltaic energy storage device according to claim 1, It is characterized in that The controller is a solar controller.

9. The photovoltaic energy storage device according to claim 1, It is characterized in that The controller has a DC load connection terminal.

10. A control method for a photovoltaic energy storage device, performed by the photovoltaic energy storage device according to any one of claims 1 to 9, It is characterized in that The control method of the photovoltaic energy storage device comprises: When the battery pack is charged and / or the load is connected, the photovoltaic energy storage operation is started, and the driving part is controlled to drive the telescopic part to extend out of the fixed body, so that the telescopic part enters an extended state; When the battery pack is fully charged and / or the load is disconnected, the photovoltaic energy storage operation is stopped, and the driving part is controlled to drive the telescopic part to retract into the cavity of the fixed body, so that the telescopic part enters a contracted state.

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