Photovoltaic energy storage device

Abstract

The utility model relates to photovoltaic power generation and energy storage equipment technical field discloses photovoltaic energy storage device, including the cabinet body, the unfolding subassembly and the inside replacement subassembly of installation in the cabinet body top, unfolding subassembly includes electric push rod, support, main photovoltaic board, auxiliary photovoltaic board and guide rod, and electric push rod drives support to go up and down, and guide rod provides orientation, and main photovoltaic board is fixed in support top, and auxiliary photovoltaic board slides in support inside and is located below main photovoltaic board, and replacement subassembly includes battery, sliding block and sliding rail, and the both sides fixed of battery have sliding block, and slide and install through the cooperation of sliding block and cabinet sliding rail. The utility model discloses through unfolding subassembly drive auxiliary photovoltaic board horizontal unfolding, significantly increases the light receiving area, improves the power generation efficiency, realizes the drawer type push -and -pull dismounting of battery through replacement subassembly, solves the difficult problem of battery maintenance in the narrow space, and improves the operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation and energy storage equipment technology, and in particular to photovoltaic energy storage devices. Background Technology

[0002] With the rapid development of new energy technologies, photovoltaic energy storage cabinets, as devices that integrate photovoltaic power generation and energy storage, have been widely used in outdoor power supply, emergency backup power supply, and other scenarios. These devices typically install photovoltaic panels on the top of the cabinet for power generation and battery packs inside the cabinet for energy storage.

[0003] However, existing photovoltaic energy storage cabinets are limited by overall size requirements for easy transportation and installation, resulting in a typically small and fixed surface area at the top. This leads to a very limited solar-receiving area for the photovoltaic panels fixed at the top, making it difficult to improve power generation efficiency under given sunlight conditions and failing to meet the demands of large-capacity energy storage. Furthermore, in pursuit of compactness, the internal space of the cabinet is usually quite narrow, with battery packs often installed in a fixed stacked manner. When internal batteries malfunction and require repair or replacement, operators often have to perform complex disassembly operations within a confined space, which is not only time-consuming and labor-intensive but also extremely difficult to maintain.

[0004] Therefore, this utility model proposes a photovoltaic energy storage device to address the shortcomings of existing technologies. Utility Model Content

[0005] In view of the problems existing in photovoltaic energy storage cabinets, such as the fixed and limited light-receiving area at the top of the cabinet, which makes it difficult to improve power generation efficiency, and the narrow internal space and fixed installation of battery packs, which makes disassembly and replacement of damaged batteries cumbersome, maintenance difficult, time-consuming and labor-intensive, this utility model aims to provide a photovoltaic energy storage device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a photovoltaic energy storage device, including: a cabinet, and a cabinet door installed on the outside of the cabinet; an energy storage converter and a controller are installed inside the cabinet; an unfolding component is installed on the top of the cabinet, and a replacement component is installed inside the cabinet.

[0007] The unfolding assembly has a structure that allows for adjustment of height and light-receiving area, and includes an electric push rod, a bracket, a main photovoltaic panel, a secondary photovoltaic panel, and a guide rod.

[0008] Furthermore, the electric push rod is fixedly connected to the top of the cabinet, and its output end drives the bracket to push it to a predetermined height. Multiple guide rods are fixedly connected to the outside of the bracket, and these guide rods are slidably connected inside the cabinet to guide the movement of the bracket. The main photovoltaic panel is fixedly connected to the top of the bracket, and the secondary photovoltaic panel is slidably connected inside the bracket and located below the main photovoltaic panel. The replacement assembly includes a battery, a slider, and a slide rail. The slider is fixedly connected to both sides of the battery. The slide rail is fixedly connected to the inner wall of the cabinet, and the battery is slidably installed inside the cabinet through the cooperation of the slider and the slide rail, forming a drawer-type push-pull structure.

[0009] Preferably, the unfolding assembly further includes a motor, a gear, and a rack; the motor is fixedly connected to the outside of the bracket, and the output end of the motor is fixedly connected to the gear; the rack is fixedly connected to the bottom of the sub-photovoltaic panel, and the gear and the rack mesh with each other; driven by the motor, the sub-photovoltaic panel can slide smoothly inside the bracket to realize the unfolding or retraction of the sub-photovoltaic panel.

[0010] Preferably, the unfolding assembly further includes a protective box; the protective box is fixedly connected to the bottom of the bracket and covers the outside of the motor and the gear, serving to prevent dust and protect the precision transmission components; the output end of the electric push rod is fixedly connected to the bottom of the protective box, thereby realizing the indirect drive connection between the electric push rod and the bracket.

[0011] Preferably, two auxiliary photovoltaic panels are provided, located on both sides below the main photovoltaic panel; the motor is used to drive the two auxiliary photovoltaic panels to expand synchronously to both sides of the main photovoltaic panel, thereby maximizing the light-receiving area while maintaining structural balance.

[0012] Preferably, the replacement component further includes a handle; the handle is fixedly connected to the outside of the battery, and is used to allow external force to pull the battery along the slide rail out of the cabinet after the connecting cable is disconnected, thereby improving the convenience of operation.

[0013] Preferably, the replacement component further includes a connecting cable; both ends of the connecting cable and the positive and negative terminals of the battery are provided with quick-connect interfaces; one end of the connecting cable is connected to the positive terminal of the battery and the other end is connected to the negative terminal of another battery, so as to connect multiple batteries in series to achieve tool-free quick electrical connection.

[0014] Preferably, the deployable component is used to collect solar energy, and the energy storage converter is electrically connected to the deployable component; the controller is electrically connected to the energy storage converter and the battery, and is used to control the storage of electrical energy inside the battery, thereby realizing integrated management of photovoltaic power generation and energy storage.

[0015] Preferably, the electric push rod is used to house the unfolding assembly inside the cabinet when storage is required, thereby reducing the size of the equipment and facilitating transportation and protection.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem of low power generation efficiency caused by the limited light-receiving area at the top of the existing photovoltaic energy storage cabinet by setting an unfolding component that is driven to lift by an electric push rod and to unfold horizontally by a motor in conjunction with a gear rack. It achieves the technical effect of automatically unfolding the auxiliary photovoltaic panels to significantly increase the light-receiving area and improve power generation efficiency when working, and being able to be folded up and made smaller when idle or transported, making it easy to protect and move.

[0018] 2. This utility model solves the problem of difficult battery pack disassembly and cumbersome maintenance caused by the small internal space of the cabinet in the prior art by setting a replacement component with a slider and a slide rail inside the cabinet and setting a handle on the outside of the battery. It achieves the technical effect of being able to quickly push and pull the battery like a drawer to replace it, reducing the difficulty of operation and significantly improving maintenance efficiency.

[0019] 3. This utility model solves the problem of cumbersome and time-consuming wiring in confined spaces by setting quick-connect interfaces at both ends of the connecting cable and the positive and negative terminals of the battery. It achieves the technical effect of quickly connecting and disconnecting the battery pack without the need for complicated tools, and further shortens the maintenance time.

[0020] 4. This utility model solves the problem that the external precision transmission mechanism is easily corroded by dust, rainwater or external impact by setting a protective box at the bottom of the bracket and enclosing the motor and gears inside. It achieves the technical effect of effectively protecting the core drive components, extending the service life of the device and ensuring stable operation of the unfolding action. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the photovoltaic energy storage device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the unfolded component of the photovoltaic energy storage device proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the photovoltaic energy storage device proposed in this utility model in its stored state;

[0024] Figure 4 This is a schematic diagram of the structure of the replacement component of the photovoltaic energy storage device proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the connecting cable of the photovoltaic energy storage device proposed in this utility model.

[0026] Legend:

[0027] 1. Cabinet; 2. Deployment Components; 201. Main Photovoltaic Panel; 202. Secondary Photovoltaic Panel; 203. Bracket; 204. Rack; 205. Gear; 206. Motor; 207. Guide Rod; 208. Electric Push Rod; 209. Protective Box; 3. Replacement Components; 301. Battery; 302. Handle; 303. Connecting Cable; 304. Slider; 305. Slide Rail; 4. Energy Storage Converter; 5. Controller; 6. Cabinet Door. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example:

[0030] Please refer to Figures 1 to 5 This utility model provides a photovoltaic energy storage device, which aims to solve the problems of limited power generation efficiency caused by the fixed light-receiving area of ​​photovoltaic panels in existing photovoltaic energy storage equipment, and the cumbersome disassembly and replacement and difficult maintenance caused by the small installation space of the internal battery pack.

[0031] like Figure 1 As shown, the photovoltaic energy storage device includes a cabinet 1 and a cabinet door 6 that is movably installed on the outside of the cabinet 1. The cabinet door 6 is used to close and protect the internal electrical components and provide a maintenance passage. An energy storage converter 4 and a controller 5 are fixedly installed inside the cabinet 1. The energy storage converter 4 is used to realize the AC-DC conversion and regulation of electrical energy. The controller 5 is used to intelligently manage the charging and discharging process of the system. The device also includes an unfolding component 2 installed on the top of the cabinet 1 and a replacement component 3 installed inside the cabinet 1. The unfolding component 2 is used to unfold when power generation is needed to increase the light-receiving area and collect solar energy. The replacement component 3 is used to conveniently install or remove the components storing electrical energy inside the cabinet 1.

[0032] like Figure 2 and Figure 3As shown, the unfolding component 2, serving as the core power generation mechanism at the top, includes an electric push rod 208, a bracket 203, a main photovoltaic panel 201, a secondary photovoltaic panel 202, and guide rods 207. The electric push rod 208 is fixedly connected to the top of the cabinet 1. The output end of the electric push rod 208 drives the bracket 203 to move the entire bracket 203 up and down, thereby pushing the photovoltaic panel to a suitable height to avoid obstruction or for storage. Multiple guide rods 207 are fixedly connected to the outside of the bracket 203. The guide rods 207 are slidably connected to the inside of the cabinet 1. Through the sliding cooperation between the guide rods 207 and the cabinet 1, precise guidance is provided for the lifting and lowering of the bracket 203, preventing tilting or swaying during the lifting and lowering process. The main photovoltaic panel 201 is fixedly connected to the top of the bracket 203 as the basic power generation unit. The secondary photovoltaic panel 202 is slidably connected to the inside of the bracket 203 and located below the main photovoltaic panel 201, serving as an extended power generation unit when unfolded.

[0033] like Figure 4 As shown, the replacement component 3 serves as the core energy storage mechanism inside, including a battery 301, a slider 304, and a slide rail 305. The battery 301 is used for the mutual conversion and storage of chemical energy and electrical energy. Slider 304 is fixedly connected to both outer walls of the battery 301, and slide rail 305 is fixedly connected to the corresponding position on the inner wall of the cabinet 1. The battery 301 is slidably installed inside the cabinet 1 in a drawer-like manner through the sliding cooperation between the slider 304 and the slide rail 305. This structural design allows the battery 301 to slide out smoothly along the slide rail 305 when maintenance or replacement is required, greatly reducing the difficulty of operation.

[0034] To solve the problem of fixed light-receiving area of ​​photovoltaic panels, the core of the technical solution in this embodiment is that the deployment component 2 of the photovoltaic energy storage device also includes a motor 206, a gear 205 and a rack 204, and the motor 206, gear 205 and rack 204 form a specific linkage and drive connection relationship with the aforementioned support 203 and secondary photovoltaic panel 202.

[0035] Please refer to the following carefully. Figure 2 The core driver deployment structure will be described in detail below:

[0036] The motor 206 is fixedly connected to the outside of the bracket 203 and serves as the power source for driving the horizontal movement of the sub-photovoltaic panel 202. The output end of the motor 206 is fixedly connected to the gear 205, which rotates with the rotation of the motor 206. At the same time, the bottom of the sub-photovoltaic panel 202 is fixedly connected to the rack 204, which extends along the sliding direction of the sub-photovoltaic panel 202. In the assembled state, the gear 205 and the rack 204 mesh with each other.

[0037] This gear 205 and rack 204 meshing transmission structure converts the rotational motion of the motor 206 into the linear motion of the sub-photovoltaic panel 202. When the motor 206 starts, it drives the gear 205 to rotate, which in turn drives the rack 204 to move, allowing the sub-photovoltaic panel 202 to slide inside the bracket 203. This enables the sub-photovoltaic panel 202 to expand to both sides of the main photovoltaic panel 201 or to retract inward. The motor 206 can drive the two sub-photovoltaic panels 202 to expand to both sides of the main photovoltaic panel 201 respectively, effectively increasing the overall light-receiving area and thus significantly improving the power generation efficiency.

[0038] To protect the aforementioned precision transmission mechanism, the unfolding assembly 2 also includes a protective box 209. The protective box 209 has a shell structure adapted to its internal accommodating space. The protective box 209 is fixedly connected to the bottom of the bracket 203 and covers the outside of the motor 206 and gear 205, providing dustproof, waterproof and impact-proof protection. The output end of the aforementioned electric push rod 208 is fixedly connected to the bottom of the protective box 209, thereby achieving a stable connection with the bracket 203, so that the electric push rod 208 can drive the entire bracket 203 assembly to rise and fall through the protective box 209.

[0039] When storage is required, the motor 206 reverses to retract the unfolded secondary photovoltaic panel 202 back into the bracket 203, and then the electric push rod 208 is activated to lower the entire unfolding assembly 2 and house it inside the cabinet 1, thus achieving compact storage of the device.

[0040] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0041] As a preferred embodiment, in order to facilitate applying pulling force to the battery 301 during maintenance, the replacement component 3 also includes a handle 302. The handle 302 is fixedly connected to the outer wall of the battery 301 and is located on the side after the cabinet door 6 is opened. This position design allows the operator to directly grasp the handle 302 after opening the cabinet door 6, and after disconnecting the connecting cable 303, it is convenient to apply force to pull the battery 301 along the slide rail 305 out of the cabinet 1, which greatly improves the convenience and labor-saving of the battery 301 replacement operation.

[0042] As another preferred embodiment, in order to simplify the electrical connection process between batteries 301 and improve connection efficiency, the replacement component 3 also includes a connecting cable 303. Both ends of the connecting cable 303 and the positive and negative terminals of the batteries 301 are provided with quick-connect interfaces. The connecting cable 303 is connected at one end to the positive terminal of one battery 301 and at the other end to the negative terminal of another battery 301 through the quick-connect interface, thereby connecting multiple batteries 301 in series. This quick-connect interface design allows the connecting cable 303 to be plugged in directly to complete the electrical connection and unplugged to disconnect the circuit. Compared with the traditional bolt wiring method, quick disassembly and assembly can be achieved without the need for additional tools, which significantly shortens the maintenance time.

[0043] In another preferred embodiment, to ensure the effective conversion and storage of electrical energy, the deployable component 2 is electrically connected to the energy storage converter 4, the energy storage converter 4 is electrically connected to the battery 301, and the controller 5 is electrically connected to the energy storage converter 4. The solar energy collected by the deployable component 2 is transmitted to the energy storage converter 4 through a cable, converted into DC power suitable for storage by the energy storage converter 4, and safely and efficiently stored inside the battery 301 under the monitoring and scheduling of the controller 5.

[0044] As a further preferred embodiment, in order to increase the symmetry and balance of the power generation area, the number of auxiliary photovoltaic panels 202 is set to two, located on both sides below the main photovoltaic panel 201 respectively. The motor 206 can synchronously drive the two auxiliary photovoltaic panels 202 to unfold to both sides of the main photovoltaic panel 201 through the cooperation of gear 205 and rack 204. This double-sided unfolding design not only maximizes the light-receiving area, but also helps to maintain the force balance of the support 203 and improve the stability of the device operation.

[0045] The working principle of this photovoltaic energy storage device is as follows:

[0046] First, when power generation is needed, the power generation efficiency is improved by unfolding component 2. Specifically, the electric push rod 208, which is fixedly connected to the top of the cabinet 1, is activated. The electric push rod 208 drives the bracket 203 and the main photovoltaic panel 201 and the auxiliary photovoltaic panel 202 connected to it to move upward to a suitable height. During this process, multiple guide rods 207 fixed to the outside of the bracket 203 slide inside the cabinet 1 to provide precise guidance for the lifting action and ensure smooth movement.

[0047] When the height is appropriate, the motor 206, which is fixedly connected to the outside of the bracket 203, is started. The motor 206 drives the gear 205, which is fixedly connected to its output end, to rotate. Since the gear 205 meshes with the rack 204, which is fixedly connected to the bottom of the sub-photovoltaic panel 202, and the sub-photovoltaic panel 202 is slidably connected inside the bracket 203, the rotational motion of the gear 205 is converted into the linear motion of the sub-photovoltaic panel 202. This causes the motor 206 to drive the two sub-photovoltaic panels 202 to slide outward from both sides below the main photovoltaic panel 201, thereby significantly increasing the total light-receiving area and improving the power generation efficiency. The collected solar energy is transmitted to the energy storage converter 4 via cable, and under the control of the controller 5, it is converted into electrical energy and stored inside the battery 301.

[0048] When storage is needed, the motor 206 is started in reverse first. Through the cooperation of the gear 205 and the rack 204, the unfolded auxiliary photovoltaic panel 202 is retracted back into the bracket 203. Then, the electric push rod 208 is started to move in reverse, driving the bracket 203 and the entire unfolding assembly 2 to descend and safely store it inside the cabinet 1.

[0049] Secondly, when the internal battery 301 needs to be replaced or repaired, a quick operation can be achieved with the help of the replacement component 3, as follows: First, open the cabinet door 6, unplug the quick-connect interfaces at both ends of the connecting cable 303 to disconnect the electrical connection between the batteries 301. Then, hold the handle 302 fixedly connected to the outside of the battery 301 and apply force outward. Since the battery 301 is fixedly connected to the sliders 304 on both sides and slides in cooperation with the slide rail 305 on the inner wall of the cabinet 1, you only need to pull the handle 302 to smoothly pull the battery 301 out along the slide rail 305 to complete the quick disassembly. When replacing the new battery, simply push it in in the opposite direction.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. Photovoltaic energy storage devices, including: Cabinet (1), and cabinet door (6) installed on the outside of said cabinet (1); The cabinet (1) is equipped with an energy storage converter (4) and a controller (5); The photovoltaic energy storage device is characterized in that it further includes an unfolding component (2) installed on the top of the cabinet (1) and a replacement component (3) installed inside the cabinet (1); The deployment assembly (2) includes an electric push rod (208), a bracket (203), a main photovoltaic panel (201), a secondary photovoltaic panel (202), and a guide rod (207); The electric push rod (208) is fixedly connected to the top of the cabinet (1), and the output end of the electric push rod (208) drives the bracket (203) to push the bracket (203) to a predetermined height. Multiple guide rods (207) are fixedly connected to the outside of the bracket (203). The guide rods (207) are slidably connected inside the cabinet (1) to provide guidance for the movement of the bracket (203). The main photovoltaic panel (201) is fixedly connected to the top of the bracket (203), and the auxiliary photovoltaic panel (202) is slidably connected inside the bracket (203) and located below the main photovoltaic panel (201); The replacement component (3) includes a battery (301), a slider (304), and a slide rail (305); The slider (304) is fixedly connected to both sides of the battery (301); The slide rail (305) is fixedly connected to the inner wall of the cabinet (1), and the battery (301) is slidably installed inside the cabinet (1) through the cooperation of the slider (304) and the slide rail (305).

2. The photovoltaic energy storage device according to claim 1, characterized in that, The deployment assembly (2) also includes a motor (206), a gear (205), and a rack (204); The motor (206) is fixedly connected to the outside of the bracket (203), and the output end of the motor (206) is fixedly connected to the gear (205); The rack (204) is fixedly connected to the bottom of the sub-photovoltaic panel (202), and the gear (205) meshes with the rack (204); The motor (206) is used to drive the sub-photovoltaic panel (202) to slide inside the bracket (203) so as to realize the unfolding or retraction of the sub-photovoltaic panel (202).

3. The photovoltaic energy storage device according to claim 2, characterized in that, The unfolding component (2) also includes a protective box (209); The protective box (209) is fixedly connected to the bottom of the bracket (203) and covers the outside of the motor (206) and the gear (205); The output end of the electric push rod (208) is fixedly connected to the bottom of the protective box (209), thereby realizing the driving connection between the electric push rod (208) and the bracket (203).

4. The photovoltaic energy storage device according to claim 2, characterized in that, Two auxiliary photovoltaic panels (202) are provided, located on both sides below the main photovoltaic panel (201); The motor (206) is used to drive the two auxiliary photovoltaic panels (202) to expand to both sides of the main photovoltaic panel (201) to increase the light-receiving area.

5. The photovoltaic energy storage device according to claim 1, characterized in that, The replacement component (3) also includes a connecting cable (303); Both ends of the connecting cable (303) and the positive and negative terminals of the battery (301) are provided with quick-connect interfaces; One end of the connecting cable (303) is connected to the positive terminal of one of the batteries (301), and the other end is connected to the negative terminal of another battery (301) to connect multiple batteries (301) in series.

6. The photovoltaic energy storage device according to claim 1, characterized in that, The replacement component (3) also includes a handle (302); The handle (302) is fixedly connected to the outside of the battery (301) and is used to allow external force to pull the battery (301) to slide out of the cabinet (1) along the slide rail (305).

7. The photovoltaic energy storage device according to claim 1, characterized in that, The deployable component (2) is used to collect solar energy, and the energy storage converter (4) is electrically connected to the deployable component (2); The controller (5) is electrically connected to the energy storage converter (4) and the battery (301) and is used to control the storage of electrical energy inside the battery (301).

8. The photovoltaic energy storage device according to claim 1, characterized in that, The electric push rod (208) is used to house the unfolding assembly (2) inside the cabinet (1) when storage is required.

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