An Electrochemical Energy Storage Device for Wind Farms

Abstract

The present invention discloses an electrochemical energy storage device for a wind farm, which relates to the technical field of electric field energy storage equipment. It includes a lower housing and an upper housing. A series base is assembled in the lower housing, and chemical batteries evenly distributed on the series base are assembled in the lower housing. For this electrochemical energy storage device of the wind farm, through the combined use of the lower housing, the upper housing, the docking plate and the limit posts, after the chemical batteries of this electrochemical energy storage device of the wind farm are assembled in the lower housing, the upper housing is sleeved on the top of the lower housing, the clamping plates are clamped at both ends of the lower housing, the clamping blocks inside the clamping plates are docked with the card slots outside the lower housing, the docking plate is embedded in the docking groove in the lower housing, and the limit posts are clamped in the limit holes outside the docking plate under the action of the elastic force of the limit springs, connecting and fixing the lower housing and the upper housing, making the assembly and disassembly operations of the lower housing and the upper housing simple and convenient, and facilitating the maintenance work of the staff on the chemical batteries in the lower housing.

Description

Technical Field

[0001] The present invention relates to the technical field of electric field energy storage devices, and more specifically, to an electrochemical energy storage device for a wind farm. Background Art

[0002] Wind is one of the pollution-free energy sources, and it is inexhaustible. For coastal islands, grassland pastoral areas, mountainous areas and plateau areas lacking water, fuel and with inconvenient transportation, it is very suitable and promising to utilize wind power generation according to local conditions. Offshore wind power is an important field in the development of renewable energy, an important force to promote the progress of wind power technology and industrial upgrading, and an important measure to promote the adjustment of energy structure. Wind power generation refers to converting the kinetic energy of the wind into electrical energy. Wind energy is a clean and pollution-free renewable energy source that has been utilized by people for a long time, mainly by windmills for pumping water, grinding flour, etc. Utilizing wind power generation is very environmentally friendly, and the wind energy reserve is huge, so it is increasingly valued.

[0003] The electric field built by relying on wind power generation is a wind farm. When the wind farm works, it can convert mechanical energy into electrical energy by relying on the wind and store it through an energy storage device, and supply it to the equipment in the power consumption area when needed. Common energy storage devices are mostly composed of chemical batteries. A chemical battery is a device that can convert chemical energy into electrical energy, and its main parts include an electrolyte solution and two positive and negative electrodes immersed in the solution. When in use, connect the two electrodes with wires, and there will be current passing through (discharging), thus obtaining electrical energy. After discharging to a certain extent, the electrical energy weakens, and some can be restored by charging and reused, which is called a storage battery, such as a lead-acid battery, an iron-nickel battery, etc.

[0004] The energy storage device can store electrical energy in chemical batteries, and combine multiple groups of chemical batteries through a housing, so that the whole device can store a large amount of electrical energy, and the internal chemical batteries are wrapped and protected by the external housing. However, the chemical batteries in the energy storage device need to be regularly inspected and maintained to avoid aging and damage after long-term operation of the chemical batteries, which may cause damage to the whole device. At this time, it is necessary to disassemble the housing and remove the installation and fixation of the chemical batteries in the energy storage device, and remove the single chemical batteries one by one for inspection. The connection between the housings of the existing energy storage devices and the fixation of the chemical batteries are mostly realized through fixing parts such as bolts. Although the stability after assembly is guaranteed, when disassembling and inspecting, the number of fixing parts is large, resulting in a cumbersome operation for both disassembly and fixation, consuming a large amount of working time of the staff. Therefore, we have designed an electrochemical energy storage device for a wind farm to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention proposes an electrochemical energy storage device for a wind farm to improve the above problems.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: An electrochemical energy storage device for a wind farm, comprising a lower housing and an upper housing. A series base is assembled in the lower housing, and chemical batteries evenly distributed on the series base are assembled in the lower housing. The upper housing is sleeved on the top of the lower housing. A middle fixing frame located in the middle is fixedly sleeved in the lower housing, and an outer fixing frame located outside the chemical batteries is sleeved in the lower housing. Both ends of the middle fixing frame are movably sleeved with a bidirectional threaded rod. Two groups of threads with opposite directions are provided at both ends of the bidirectional threaded rod, and the bidirectional threaded rod is threadedly connected with the outer fixing frame. A clamping plate and a docking plate for auxiliary fixing are fixedly installed at the bottom of the upper housing. A docking seat corresponding to the position of the docking plate is sleeved outside the lower housing. A plurality of uniformly distributed limiting columns are movably sleeved in the docking seat. A docking groove matching the docking plate is opened in the lower housing. A limiting hole matching the limiting column is opened outside the docking plate.

[0007] Further, the clamping plates are symmetrically distributed at both ends of the upper housing, and a clamping block is fixedly sleeved at the bottom end of the clamping plate. A clamping groove matching the clamping block is opened at both ends of the lower housing.

[0008] Further, a pressing plate is movably sleeved in the upper housing. A plurality of uniformly distributed pressing springs are fixedly connected between the pressing plate and the upper housing, and a protective pad matching the top end of the chemical battery is sleeved at the bottom of the pressing plate.

[0009] Further, the end of the limiting column extends into the docking groove opened in the lower housing, and the top end of the limiting column extends outside the docking seat and is fixedly sleeved with a pulling plate.

[0010] Further, a synchronous plate is fixedly sleeved on the outer side of the limiting column. An activity cavity matching the synchronous plate is opened in the docking seat, and a plurality of uniformly distributed limiting springs are fixedly connected between the docking seat and the synchronous plate.

[0011] Further, arc-shaped grooves matching the outer surface of the chemical battery are opened on the outer sides of the middle fixing frame and the outer fixing frame, and hard rubber is wrapped on the outer sides of the middle fixing frame and the outer fixing frame.

[0012] Further, the outer fixing frames are symmetrically distributed on the bidirectional threads outside the bidirectional threaded rod. A knob is fixedly sleeved in the middle of the bidirectional threaded rod. A rotation groove matching the knob is opened on the middle fixing frame.

[0013] Further, a series interface matching the bottom end of the chemical battery is opened on the series base. One end of the series base extends outside the lower housing and is provided with a wiring port.

[0014] The electrochemical energy storage device for a wind farm provided by the present invention has the following beneficial effects:

[0015] 1. For this wind farm electro - chemical energy storage device, through the combined use of the lower housing, the upper housing, the docking plate and the limit posts, after the chemical battery of this wind farm electro - chemical energy storage device is assembled in the lower housing, the upper housing is sleeved on the top of the lower housing, the clamping plates are clamped at both ends of the lower housing, the clamping blocks inside the clamping plates are docked with the card slots outside the lower housing, the docking plate is embedded in the docking groove in the lower housing, and the limit posts are clamped in the limit holes outside the docking plate under the action of the elastic force of the limit springs, connecting and fixing the lower housing and the upper housing, making the assembly and disassembly operations of the lower housing and the upper housing simple and convenient, and facilitating the maintenance work of the staff on the chemical battery in the lower housing.

[0016] 2. For this wind farm electro - chemical energy storage device, through the combined use of the bidirectional threaded rod, the knob, the middle fixing frame and the outer fixing frame, after the chemical battery is assembled inside the lower housing of this wind farm electro - chemical energy storage device, the staff can rotate the knob outside the bidirectional threaded rod to drive the bidirectional threaded rod to rotate. After the bidirectional threaded rod rotates, it pushes the outer fixing frame to move through the threads on its outside. Under the combined action of the outer fixing frame and the middle fixing frame, the outside of the chemical battery is clamped and fixed. When it is necessary to remove the chemical battery, reverse - rotate the knob, thus ensuring the stability of the chemical battery after being assembled inside the lower housing, and the operation of disassembling a single chemical battery is simple and convenient.

[0017] 3. For this wind farm electro - chemical energy storage device, through the combined use of the upper housing, the extrusion plate and the extrusion spring, during the process of assembling the upper housing and the lower housing of this wind farm electro - chemical energy storage device, the extrusion plate inside the upper housing can come into contact with the top of the chemical battery. As the upper housing and the lower housing are assembled, the extrusion plate moves inside the upper housing and compresses the extrusion spring. When the lower housing and the upper housing are completely fixed, the extrusion plate wraps the top of the chemical battery, and the extrusion plate squeezes the top of the chemical battery under the action of the elastic force of the extrusion spring, and cooperates with the series connection interfaces opened on the series connection base to assist in fixing the chemical battery in the lower housing, further improving the stability of the chemical battery after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the following - described drawings are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Fig. shows a schematic diagram of a wind farm electro - chemical energy storage device proposed by the present invention;

[0020] Figure 2Shows the structural schematic diagram of the assembled lower housing and upper housing proposed by the present invention;

[0021] Figure 3 Shows the structural schematic diagram inside the upper housing proposed by the present invention;

[0022] Figure 4 Shows the schematic diagram of the internal structure of the lower housing proposed by the present invention;

[0023] Figure 5 Shows the structural schematic diagram inside the docking seat proposed by the present invention;

[0024] Figure 6 Shows the structural schematic diagram between the outer fixing frame and the bidirectional threaded rod proposed by the present invention;

[0025] Figure 7 Shows the structural schematic diagram of the outside of the limit post and the synchronization plate proposed by the present invention.

[0026] In the figure: 1. Lower housing; 2. Upper housing; 3. Docking plate; 4. Limit hole; 5. Clamping plate; 6. Chemical battery; 7. Series base; 8. Card slot; 9. Docking seat; 10. Pulling plate; 11. Extrusion plate; 12. Extrusion spring; 13. Block; 14. Middle fixing frame; 15. Outer fixing frame; 16. Limit post; 17. Bidirectional threaded rod; 18. Knob; 19. Limit spring; 20. Synchronization plate; 21. Docking groove. Specific embodiments

[0027] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1 to 5, the present invention provides a technical solution: a wind farm electrochemical energy storage device, which includes a lower housing 1 and an upper housing 2. A series base 7 is assembled in the lower housing 1, and chemical batteries 6 evenly distributed on the series base 7 are assembled in the lower housing 1. Series interfaces matching the bottom ends of the chemical batteries 6 are provided on the series base 7. On one hand, the series interfaces on the series base 7 can assist in the installation and fixation of the chemical batteries 6 on the series base 7. On the other hand, the chemical batteries 6 can be connected in series to ensure the overall energy storage capacity of the device for the wind farm electrical energy. One end of the series base 7 extends to the outside of the lower housing 1 and is provided with a wiring port. The wiring port outside the series base 7 can be electrically connected to the wind power generation equipment in the wind farm, so as to store the electrical energy generated by wind power generation. The principles and usage processes of the present chemical battery 6 and series base 7 are the same as those of the prior art and will not be elaborated here.

[0029] An extrusion plate 11 is movably sleeved in the upper housing 2. During the assembly process of the upper housing 2 and the lower housing 1, the extrusion plate 11 moves inside the upper housing 2 and compresses the extrusion spring 12. Uniformly distributed extrusion springs 12 are fixedly connected between the extrusion plate 11 and the upper housing 2. A protective pad matching the top end of the chemical battery 6 is sleeved at the bottom of the extrusion plate 11. When the lower housing 1 and the upper housing 2 are completely fixed, the extrusion plate 11 wraps the top end of the chemical battery 6, and the extrusion plate 11 squeezes the top of the chemical battery 6 under the action of the elastic force of the extrusion spring 12 to assist in the fixation of the chemical battery 6 in the lower housing 1. The upper housing 2 is sleeved on the top of the lower housing 1.

[0030] A clamping plate 5 and a docking plate 3 for auxiliary fixation are fixedly installed at the bottom of the upper housing 2. The clamping plates 5 are symmetrically distributed at both ends of the upper housing 2. During the assembly process between the upper housing 2 and the lower housing 1, the clamping plates 5 can assist in the fixation of the upper housing 2, and a clamping block 13 is fixedly sleeved at the bottom end of the clamping plate 5. Card slots 8 matching the clamping blocks 13 are provided at both ends of the lower housing 1. The clamping blocks 13 inside the clamping plates 5 can be mutually clamped with the card slots 8 outside the lower housing 1 to ensure the stability of both ends after the upper housing 2 and the lower housing 1 are connected and assembled.

[0031] Please refer to Figure 1 and Figure 4 and Figure 6, a middle fixing frame 14 is fixedly sleeved in the lower housing 1 and located in the middle, and an outer fixing frame 15 is sleeved in the lower housing 1 and located outside the chemical battery 6. Both ends of the middle fixing frame 14 are movably sleeved with a bidirectional threaded rod 17. The bidirectional threaded rod 17 can rotate on the middle fixing frame 14, and both ends of the bidirectional threaded rod 17 are movably connected to the lower housing 1 through bearings. Two sets of threads with opposite directions are provided at both ends of the bidirectional threaded rod 17, and the bidirectional threaded rod 17 is threadedly connected to the outer fixing frame 15. The outer fixing frames 15 are symmetrically distributed on the external double threads of the bidirectional threaded rod 17. Rotating the knob 18 outside the bidirectional threaded rod 17 can drive the bidirectional threaded rod 17 to rotate. The knob 18 is fixedly sleeved in the middle of the bidirectional threaded rod 17. A rotating groove matching the knob 18 is provided on the middle fixing frame 14. After the bidirectional threaded rod 17 rotates, it can push the outer fixing frame 15 to move through the threads on its outside, so that the outer fixing frame 15 approaches the middle fixing frame 14, and the outside of the chemical battery 6 is clamped and fixed.

[0032] Arc-shaped grooves matching the outer surface of the chemical battery 6 are provided on the exteriors of the middle fixing frame 14 and the outer fixing frame 15. The middle fixing frame 14 and the outer fixing frame 15 can cooperate with each other to realize the clamping and fixing of the chemical battery 6. In order to ensure the contact effect of the clamping, arc-shaped grooves are provided on the exteriors. Moreover, hard rubber is wrapped on the exteriors of the middle fixing frame 14 and the outer fixing frame 15. The hard rubber wrapped on the exteriors of the middle fixing frame 14 and the outer fixing frame 15 can improve the overall insulation performance of the device and avoid electric leakage accidents.

[0033] Please refer to Figures 5 to 7 , a docking seat 9 corresponding to the position of the docking plate 3 is sleeved outside the lower housing 1. Uniformly distributed limit posts 16 are movably sleeved in the docking seat 9. A docking groove 21 matching the docking plate 3 is provided in the lower housing 1. A limit hole 4 matching the limit post 16 is provided on the outside of the docking plate 3. The end of the limit post 16 extends into the docking groove 21 provided in the lower housing 1. After the docking plate 3 is inserted into the docking groove 21, the end of the limit post 16 can be inserted into the docking groove 21, and the upper housing 2 and the lower housing 1 are connected and fixed by docking the end of the limit post 16 with the limit hole 4 outside the docking plate 3. Moreover, the top end of the limit post 16 extends outside the docking seat 9 and is fixedly sleeved with a pull plate 10. The pull plate 10 at the top end of the limit post 16 can facilitate the staff to adjust the position of the limit post 16 outside the docking seat 9.

[0034] An outer part of the limit post 16 is fixedly sleeved with a synchronization plate 20. The synchronization plate 20 sleeved on the outside of the limit post 16 can ensure the synchronous movement of multiple limit posts 16. An activity cavity matching the synchronization plate 20 is formed in the docking seat 9, and a uniformly distributed limit spring 19 is fixedly connected between the docking seat 9 and the synchronization plate 20. After the docking plate 3 is completely embedded in the docking groove 21, the limit spring 19 squeezes the synchronization plate 20 under the action of its own elastic force, driving the end of the limit post 16 to be clamped in the limit hole 4 outside the docking plate 3, connecting and fixing the lower housing 1 and the upper housing 2.

[0035] In summary, the present invention provides an electrochemical energy storage device for a wind farm. When in use, the chemical battery 6 is evenly assembled inside the lower shell 1, and the bottom end of the chemical battery 6 is docked with the interface at the top of the series base 7. After the assembly is completed, the knob 18 outside the two-way threaded rod 17 is rotated to drive the two-way threaded rod 17 to rotate. After the two-way threaded rod 17 rotates, the outer fixing frame 15 is pushed to move through its external thread, so that the outer fixing frame 15 approaches the middle fixing frame 14. Under the cooperation of the outer fixing frame 15 and the middle fixing frame 14, the outer side of the chemical battery 6 is clamped and fixed, and the upper shell 2 is sleeved on it. The top of the lower shell 1 makes the card plate 5 clamped at the two ends of the lower shell 1, and the upper shell 2 is pressed downward until the card block 13 inside the card plate 5 docks with the card slot 8 outside the lower shell 1, and the docking plate 3 is embedded in the docking slot 21 in the lower shell 1. After the docking plate 3 is completely embedded in the docking slot 21, the limit spring 19 squeezes the synchronous plate 20 under the action of its own elastic force, driving the end of the limit column 16 to be clamped in the limit hole 4 outside the docking plate 3, and the lower shell 1 and the upper shell 2 are connected and fixed. During the assembly of the upper shell 2 and the lower shell 1, the extrusion plate 11 moves inside the upper shell 2 and compresses the extrusion spring 12. When the lower shell 1 and the upper shell 2 are completely fixed, the extrusion plate 11 wraps the top of the chemical battery 6, and the extrusion plate 11 squeezes the top of the chemical battery 6 under the action of the elastic force of the extrusion spring 12, and cooperates with the series interface opened on the series base 7 to assist the fixation of the chemical battery 6 in the lower shell 1. After the connection and fixation of the lower shell 1 and the upper shell 2 are completed, the connection terminal of the series base 7 is located outside the lower shell 1 and is electrically connected to the wind power generation equipment. During the operation of the wind power generation equipment in the wind farm, the mechanical energy generated by the wind force is converted into electrical energy, and the electrical energy is input into the lower shell through the connecting line. 1 is stored in the chemical battery 6. When the chemical battery 6 needs to be inspected, the card plate 5 is pushed to make the card block 13 withdraw from the card slot 8, and the pull plate 10 is pulled to drive the end of the limiting column 16 to withdraw from the limiting hole 4 outside the docking plate 3, so as to release the connection between the lower shell 1 and the upper shell 2, and remove the upper shell 2 from the lower shell 1. The knob 18 is rotated in the reverse direction to drive the outer fixing frame 15 away from the middle fixing frame 14, so as to release the clamping fixation of the chemical battery 6, and remove the chemical battery 6 for inspection, thereby completing the assembly and operation of the entire wind farm electrochemical energy storage device and the inspection process of the chemical battery 6.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrochemical energy storage device for a wind farm, comprising a lower housing (1) and an upper housing (2). A series base (7) is assembled in the lower housing (1), and chemical batteries (6) evenly distributed on the series base (7) are assembled in the lower housing (1). The upper housing (2) is sleeved on the top of the lower housing (1). Characterized in that: A middle fixing frame (14) is fixedly sleeved in the middle of the lower housing (1), and an outer fixing frame (15) is sleeved outside the chemical battery (6) in the lower housing (1). Both ends of the middle fixing frame (14) are movably sleeved with a bidirectional threaded rod (17). Two groups of threads with opposite directions are arranged at both ends of the bidirectional threaded rod (17), and the bidirectional threaded rod (17) is threadedly connected with the outer fixing frame (15). A clamping plate (5) and a docking plate (3) for auxiliary fixing are fixedly installed at the bottom of the upper housing (2). A docking seat (9) corresponding to the position of the docking plate (3) is sleeved outside the lower housing (1). Uniformly distributed limiting columns (16) are movably sleeved in the docking seat (9). A docking groove (21) matching the docking plate (3) is opened in the lower housing (1). Limiting holes (4) matching the limiting columns (16) are opened outside the docking plate (3).

2. An electrochemical energy storage device for a wind farm according to claim 1, Characterized in that: The clamping plates (5) are symmetrically distributed at both ends of the upper housing (2), and clamping blocks (13) are fixedly sleeved at the bottom ends of the clamping plates (5). Card slots (8) matching the clamping blocks (13) are opened at both ends of the lower housing (1).

3. An electrochemical energy storage device for a wind farm according to claim 1, Characterized in that: An extrusion plate (11) is movably sleeved in the upper housing (2). Uniformly distributed extrusion springs (12) are fixedly connected between the extrusion plate (11) and the upper housing (2), and a protective pad matching the top end of the chemical battery (6) is sleeved at the bottom of the extrusion plate (11).

4. An electrochemical energy storage device for a wind farm according to claim 1, Characterized in that: The end of the limiting column (16) extends into the docking groove (21) opened in the lower housing (1), and the top end of the limiting column (16) extends outside the docking seat (9) and is fixedly sleeved with a pulling plate (10).

5. An electrochemical energy storage device for a wind farm according to claim 4, Characterized in that: A synchronous plate (20) is fixedly sleeved on the outside of the limiting column (16). An activity cavity matching the synchronous plate (20) is opened in the docking seat (9), and uniformly distributed limiting springs (19) are fixedly connected between the docking seat (9) and the synchronous plate (20).

6. An electrochemical energy storage device for a wind farm according to claim 1, Characterized in that: Arc-shaped grooves matching the outer surfaces of the chemical batteries (6) are opened on the outside of the middle fixing frame (14) and the outer fixing frame (15), and hard rubber is wrapped on the outside of the middle fixing frame (14) and the outer fixing frame (15).

7. An electrochemical energy storage device for a wind farm according to claim 6, It is characterized in that: The outer fixing frames (15) are symmetrically distributed on the double-thread of the outside of the double-threaded rod (17). A knob (18) is fixedly sleeved in the middle of the double-threaded rod (17), and a rotation groove matching the knob (18) is formed on the middle fixing frame (14).

8. A wind farm electrochemical energy storage device according to claim 1, It is characterized in that: A series connection interface matching the bottom end of the chemical battery (6) is formed on the series base (7), and one end of the series base (7) extends to the outside of the lower housing (1) and is provided with a wiring port.

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