Safety monitoring device for lithium battery energy storage power station

Abstract

The lithium battery energy storage power station safety monitoring device comprises a battery mounting rack, the battery mounting rack comprises a front rack and a rear rack, and the front rack and the rear rack are connected through a plurality of adjusting assemblies. The front frame and the rear frame each comprise a plurality of cross-shaped pipe fittings, and the cross-shaped pipe fittings are distributed in a rectangular array mode. And a mounting cavity for placing a battery box is defined by the adjacent cross-shaped pipe fittings. An assembly plate is arranged at the top of the mounting cavity, a sensing module and a fire extinguishing module are assembled on the assembly plate, the fire extinguishing module is provided with a nozzle exposed from the lower surface of the assembly plate, and a through hole matched with the nozzle is formed in the top of the battery box. Each mounting cavity is provided with a special sensing module and a fire extinguishing module, so that the loss range can be reduced to the greatest extent when the battery box is on fire.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of energy storage power station, specifically relates to a lithium battery energy storage power station safety monitoring device. BACKGROUND

[0002] With the development of new energy technology, especially the application of renewable energy such as wind energy and solar energy is increasingly widespread, energy storage power station as the key facility of adjusting power supply and demand balance, improve energy utilization efficiency, plays a more and more important role in modern power grid. However, since the energy storage system usually adopts a large number of high energy density lithium ion battery pack, therefore its safety problem has been concerned. Especially under the influence of battery overcharge, short circuit or external factors, may cause heat runaway phenomenon, and then lead to fire and even explosion accident, bring huge loss to personnel safety and property.

[0003] In order to cope with this challenge, the industry has proposed a variety of safety monitoring and protection scheme for energy storage system. The traditional method mainly includes installing smoke detector, temperature sensor and other equipment to realize real-time monitoring of environmental parameters, and combining manual or semi-automatic fire extinguishing device for emergency treatment. Although these measures improve the safety performance of energy storage station to some extent, but still have the following shortcomings:

[0004] 1. Slow response speed: the sensing device in the prior art often needs a long time to accurately judge the potential risk, and there is a certain delay from detecting the abnormality to starting the corresponding protection mechanism.

[0005] 2. Weak local control ability: once a certain area fails, the whole energy storage system may be affected, and it is difficult to accurately isolate the damaged unit without affecting other normal working parts. INVENTION CONTENTS

[0006] In order to solve the above technical problems, the utility model solves the problem through the following technical scheme.

[0007] A lithium battery energy storage power station safety monitoring device, comprising a battery mounting rack, the battery mounting rack comprises a front frame and a rear frame, the front frame and the rear frame are connected through a plurality of adjusting components. The front frame and the rear frame both comprise a plurality of cross-shaped cross pipe fittings, the cross pipe fittings are distributed in a rectangular array. Adjacent cross pipe fittings enclose an installation cavity for placing a battery box. The top of the installation cavity is provided with an assembly plate, the assembly plate is assembled with a sensing module and a fire extinguishing module, the fire extinguishing module has a nozzle exposed from the lower surface of the assembly plate, and the top of the battery box is provided with a through hole matched with the nozzle.

[0008] As a preferred embodiment of the present application, the adjusting assembly is assembled with the cross pipe fittings, the adjusting assembly comprises a connecting shaft, a plurality of limiting shafts and a plurality of limiting supports, the connecting shaft is provided with a plurality of gear portions, the limiting support comprises a rack portion and a supporting portion, the rack portion is engaged with the gear portion, and the supporting portion extends into a corner of the installation cavity, and the battery box is fixed and limited by the limiting supports located at the four corners of the installation cavity. The limiting shaft abuts against the back of the rack portion. The cross pipe fittings are provided with a plurality of pipe arms, and the cross pipe fittings are connected by extension rods, and the two ends of the extension rod are assembled in the pipe arms of the adjacent two groups of cross pipe fittings.

[0009] As a preferred embodiment of the present application, one end of the connecting shaft extends from the rear of the rear frame and is connected with a driving assembly, the driving assembly comprises a driving device and a plurality of sub-transmission modules, the number of the sub-transmission modules is equal to the number of the installation cavities, and the driving device is connected with one of the sub-transmission modules.

[0010] The sub-transmission module comprises a belt wheel, a transmission belt and a tensioning module. The belt wheel has four groups and is assembled on the connecting shaft located at the four corners of the installation cavity, and the transmission belt is connected with the four groups of belt wheels for transmission. The tensioning module is connected with the transmission belt to ensure the tension of the transmission belt. The four groups of belt wheels on the same connecting shaft are integrally arranged.

[0011] As a preferred embodiment of the present application, the tensioning module comprises a plurality of torsion members, and the plurality of torsion members are uniformly distributed and assembled on the pipe arms of the four sides of the installation cavity. The torsion member comprises a torsion shaft and a tensioning shaft, the torsion shaft and the tensioning shaft are connected by a connecting plate, the torsion shaft is assembled with the pipe arm, one end of the torsion member with the tensioning shaft is arranged freely, and the transmission belt is wound on the tensioning shaft.

[0012] As a preferred embodiment of the present application, the battery box is provided with a locking switch and a plurality of telescopic locking members, the locking switch is electrically connected with the plurality of telescopic locking members to uniformly control the telescopic locking members. The limiting support is provided with a locking groove, the telescopic locking member comprises a locking tongue, and when the battery box is locked, the locking switch controls the locking tongue to extend into the locking groove to realize the position locking of the battery box.

[0013] As a preferred embodiment of the present application, the battery box is provided with a limiting metal member at the side of the front surface, and after the position locking of the battery box is completed, the limiting metal member abuts against the front frame.

[0014] As a preferred embodiment of the present application, the assembly plate is fixedly assembled with the limiting support located above the installation cavity.

[0015] Compared with the prior art, the application has the following beneficial effects: when an abnormal situation (such as excessively high temperature or smoke) occurs in a battery box in a certain area, the sensing module installed above the area can quickly sense the change and immediately trigger the alarm system; at the same time, the fire extinguishing module preset at the same position also immediately starts the working mode, releases the fire extinguishing agent into the battery box through the pre-set nozzle, effectively prevents the fire from spreading to other adjacent battery boxes, and maximally reduces the loss range. Since each installation cavity has its own safety protection measures, even if a local fault occurs, it will not affect the entire energy storage station, which not only enhances the stability and reliability of the entire system, but also provides a convenient condition for subsequent maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of a battery box.

[0017] Figure 2 is a perspective view of a battery mounting rack (part).

[0018] Figure 3 is a perspective view of a battery mounting rack (part). Figure 2 is an enlarged view of part A in FIG. 4.

[0019] Figure 4 is a perspective view of a battery mounting rack (single battery cavity). Figure 1 .

[0020] Figure 5 is a perspective view of a battery mounting rack (single battery cavity). Figure 2 .

[0021] Figure 6 is a perspective view of a battery box.

[0022] Figure 7 is an exploded view of the adjusting assembly.

[0023] Figure 8 is a comparison schematic view of the battery mounting rack in the folded and unfolded states.

[0024] 100, battery mounting rack; 110, installation cavity; 120, front rack; 130, rear rack; 140, cross pipe; 141, pipe arm; 142, extension rod; 150, assembly plate; 151, sensing module; 152, fire extinguishing module;

[0025] 200, adjusting assembly; 210, connecting shaft; 211, gear part; 220, limiting shaft; 230, limiting support; 231, rack part; 232, support part; 233, locking groove; 240, belt wheel; 241, transmission belt; 250, torsion part; 251, torsion shaft; 252, tensioning shaft; 253, connecting plate;

[0026] 300, battery box; 301, through hole; 310, locking switch; 320, telescopic locking piece; 330, limiting metal piece;

[0027] 400, energy storage cabinet. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0029] In the following embodiments, the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout, and the following embodiments described with reference to the drawings are exemplary and are only used to explain the utility model and cannot be understood as limiting the utility model.

[0030] In the description of the utility model, it is understood that the terms: center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, therefore cannot be understood as limiting the utility model. In addition, the terms: first, second and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the shown technical features. In the description of the utility model, unless otherwise explicitly specified and limited, the terms: mounting, connection, connection and the like should be understood in a broad sense, and the person skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0031] Reference Figures 1 to 8The application discloses a lithium battery energy storage power station safety monitoring device which is assembled in an energy storage cabinet 400 and comprises a battery mounting rack 100, wherein the battery mounting rack 100 comprises a front rack 120 and a rear rack 130, and the front rack 120 and the rear rack 130 are connected through a plurality of adjusting assemblies 200. The front rack 120 and the rear rack 130 each comprise a plurality of cross-shaped cross pipe fittings 140 which are arranged in a rectangular array. Adjacent cross pipe fittings 140 surround an installation cavity 110 for placing a battery box 300. The top of the installation cavity 110 is provided with an assembly plate 150, the assembly plate 150 is provided with a sensing module 151 and a fire extinguishing module 152, the fire extinguishing module 152 has a nozzle exposed from the lower surface of the assembly plate 150, and the top of the battery box 300 is provided with a through hole 301 matched with the nozzle. When the battery box 300 in a certain area appears an abnormal condition (such as excessively high temperature or starts to smoke), the sensing module 151 mounted above the area can quickly perceive the change and immediately trigger an alarm system; at the same time, the fire extinguishing module 152 preset at the same position also starts the working mode immediately, releases fire extinguishing agent into the battery box 300 through the pre-set nozzle, effectively prevents the fire from spreading to other adjacent battery boxes 300, and maximally reduces the loss range. Since each installation cavity 110 has its own safety protection measures, even if a local fault occurs, the whole energy storage station will not be affected, which not only enhances the stability and reliability of the whole system, but also provides a convenient condition for subsequent maintenance.

[0032] The application is adjustable for the battery mounting rack 100: the adjusting assembly 200 is assembled and connected with the cross pipe fitting 140, the adjusting assembly 200 comprises a connecting shaft 210, a plurality of limiting shafts 220 and a plurality of limiting supporting pieces 230, the connecting shaft 210 is provided with a plurality of gear parts 211, the limiting supporting piece 230 comprises a rack part 231 and a supporting part 232, the rack part 231 is engaged with the gear part 211, the supporting part 232 extends into the corner of the installation cavity 110, and the battery box 300 is fixed and limited through the limiting supporting pieces 230 located at the four corners of the installation cavity 110. The limiting shaft 220 abuts against the back surface of the rack part 231. The cross pipe fitting 140 is provided with a plurality of pipe arms 141, the cross pipe fittings 140 are connected through extension rods 142, and the two ends of the extension rod 142 are assembled in the pipe arms 141 of the adjacent two groups of cross pipe fittings 140.

[0033] The dynamic adjustment principle of the battery mounting rack 100 is based on mechanical transmission and telescopic mechanism to realize the adjustment of the spacing between the battery boxes 300. The specific working principle is as follows: when no adjustment is performed, the cross pipe fittings 140 are connected through the extension rods 142, and the limiting support members 230 are in a relatively fixed position. At this time, the battery boxes 300 are stably supported and fixed in the mounting cavities 110. When adjustment is performed, the connecting shafts 210 are rotated. With the rotation of the connecting shafts 210, the limiting support members 230 extend towards the mounting cavities 110. Due to the presence of the battery boxes 300, the distance between the limiting support members 230 remains unchanged. Therefore, the cross pipe fittings 140 need to adapt to this change, and thus the spacing between the adjacent cross pipe fittings 140 increases, thereby increasing the spacing between the battery boxes 300. Through the above design, the safety monitoring device can dynamically adjust the air duct spacing between the battery boxes 300. Such design helps to optimize air circulation, thereby reducing the risk of spontaneous combustion caused by excessive temperature, and also improves energy use efficiency and prolongs the service life of the energy storage system.

[0034] Specifically, one end of the connecting shaft 210 extends from the rear of the rear frame 130 and is connected with a driving assembly. The driving assembly includes a driving device and a plurality of sub-transmission modules. The number of the sub-transmission modules is equal to the number of the mounting cavities 110, and the driving device is connected with one of the sub-transmission modules. The sub-transmission module includes a belt wheel 240, a transmission belt 241, and a tensioning module. The belt wheel 240 has four groups and is respectively assembled on the connecting shaft 210 located at the four corners of the mounting cavity 110. The transmission belt 241 is connected with the four groups of belt wheels 240 for transmission. The tensioning module is connected with the transmission belt 241 to ensure the tension of the transmission belt 241. The four groups of belt wheels 240 located on the same connecting shaft 210 are integrally arranged. The tensioning module includes a plurality of torsion members 250, and the plurality of torsion members 250 are uniformly distributed and assembled on the pipe arms 141 of the four sides of the mounting cavity 110. The torsion member 250 includes a torsion shaft 251 and a tensioning shaft 252, and the torsion shaft 251 and the tensioning shaft 252 are connected through a connecting plate 253. The torsion shaft 251 is assembled and connected with the pipe arm 141. One end of the torsion member 250 with the tensioning shaft 252 is freely arranged, and the transmission belt 241 is wound on the tensioning shaft 252. Through the above design, a single driving device cooperated with a plurality of sub-transmission modules can realize the synchronous expansion and contraction of the entire battery mounting rack 100. This not only simplifies the overall structure, reduces the number of required power sources, but also improves the system response speed and operation consistency, reduces the maintenance cost, and makes the equipment more energy-saving and environmentally friendly.

[0035] Wherein, for the convenience of disassembly and assembly of the assembly plate 150, the assembly plate 150 is fixedly assembled with the limiting support 230 located above the mounting cavity 110, so that the staff can quickly replace or check the key components such as the sensing module 151 and the fire extinguishing device during daily maintenance, improve the work efficiency and ensure the reliability of the safety monitoring system.

[0036] In addition, the battery box 300 is provided with a locking switch 310 and a plurality of telescopic locking pieces 320, the locking switch 310 is electrically connected with the plurality of telescopic locking pieces 320 to uniformly control the telescopic locking pieces 320. The limiting support 230 is provided with a locking groove 233, the telescopic locking piece 320 includes a lock tongue, when the battery box 300 is locked, the locking switch 310 controls the lock tongue to extend into the locking groove 233 to realize the position locking of the battery box 300. The front side of the battery box 300 is provided with a limiting metal piece 330, after the position locking of the battery box 300 is completed, the limiting metal piece 330 abuts against the front frame 120. The design utilizes the electric control relationship between the locking switch 310 and the telescopic locking piece 320, so that the positioning and locking work of the battery box 300 in the battery mounting rack 100 can be very conveniently completed. The method avoids the inconvenience caused by the traditional physical fastening mode, such as the need to carry special tools for complex operation and the like, greatly improves the convenience and safety in the assembling and disassembling process.

[0037] The protection scope of the utility model includes but is not limited to the above implementation, the protection scope of the utility model is subject to the claims, any replacement, deformation, improvement of the technical personnel in the art to the present technology easily thought of falls into the protection scope of the utility model.

Claims

1. A safety monitoring device for a lithium battery energy storage power station, characterized in that, The application relates to a battery mounting rack (100) which comprises a front rack (120) and a rear rack (130) connected through a plurality of adjusting assemblies (200); the front rack (120) and the rear rack (130) each comprise a plurality of cross-shaped cross pipe fittings (140) arranged in a rectangular array; adjacent cross pipe fittings (140) enclose a mounting cavity (110) for placing a battery box (300); the top of the mounting cavity (110) is provided with an assembly plate (150) on which a sensing module (151) and an extinguishing module (152) are assembled, the extinguishing module (152) has a nozzle exposed from the lower surface of the assembly plate (150), and the top of the battery box (300) is provided with a through hole (301) matched with the nozzle. The adjusting assembly (200) is assembled with the cross pipe fitting (140), the adjusting assembly (200) comprises a connecting shaft (210), a plurality of limiting shafts (220) and a plurality of limiting supporting pieces (230), the connecting shaft (210) is provided with a plurality of gear portions (211), the limiting supporting piece (230) comprises a rack portion (231) and a supporting portion (232), the rack portion (231) is engaged with the gear portion (211), the supporting portion (232) extends into the corners of the mounting cavity (110), and the battery box (300) is fixed and limited through the limiting supporting pieces (230) located at the four corners of the mounting cavity (110); the limiting shaft (220) abuts against the back surface of the rack portion (231); the cross pipe fitting (140) is provided with a plurality of pipe arms (141), the cross pipe fittings (140) are connected through extension rods (142), and the two ends of the extension rod (142) are assembled in the pipe arms (141) of two adjacent groups of cross pipe fittings (140) respectively.

2. The safety monitoring device for lithium battery energy storage power station according to claim 1, characterized in that, One end of the connecting shaft (210) extends out from the rear of the rear rack (130) and is connected with a driving assembly, the driving assembly comprises a driving device and a plurality of sub-transmission modules, the number of the sub-transmission modules is equal to the number of the mounting cavities (110), and the driving device is connected with one group of sub-transmission modules; 3. The safety monitoring device for lithium battery energy storage power station according to claim 2, characterized in that, The sub-transmission module comprises a belt wheel (240), a transmission belt (241) and a tensioning module; the belt wheel (240) has four groups and is assembled on the connecting shafts (210) located at the four corners of the mounting cavities (110) respectively, the transmission belt (241) is connected with the four groups of belt wheels (240) for transmission, the tensioning module is connected with the transmission belt (241) to ensure the tension of the transmission belt (241), and the four groups of belt wheels (240) located on the same connecting shaft (210) are integrally arranged. ​ 4. The safety monitoring device for lithium battery energy storage power station according to claim 3, characterized in that, The tensioning module comprises a plurality of torsion members (250), the plurality of torsion members (250) are evenly distributed and assembled on the pipe arms (141) of the four sides of the mounting cavity (110); the torsion member (250) comprises a torsion shaft (251) and a tensioning shaft (252), the torsion shaft (251) and the tensioning shaft (252) are connected through a connecting plate (253), the torsion shaft (251) is assembled and connected with the pipe arm (141), one end of the torsion member (250) with the tensioning shaft (252) is arranged freely, and the transmission belt (241) is abutted on the tensioning shaft (252).

5. The safety monitoring device for lithium battery energy storage power station according to claim 2, characterized in that, The battery box (300) is provided with a locking switch (310) and a plurality of telescopic locking members (320), the locking switch (310) is electrically connected with the plurality of telescopic locking members (320) to uniformly control the telescopic locking members (320); the limiting supporting member (230) is provided with a locking groove (233), the telescopic locking member (320) comprises a locking tongue, when the battery box (300) is locked, the locking switch (310) controls the locking tongue to extend into the locking groove (233) to realize the position locking of the battery box (300).

6. The safety monitoring device for a lithium battery energy storage power station according to claim 5, characterized in that, The front side of the battery box (300) is provided with a limiting metal piece (330), after the position locking of the battery box (300) is completed, the limiting metal piece (330) is abutted on the front frame (120).

7. The safety monitoring device for lithium battery energy storage power station according to claim 2, characterized in that, The assembly plate (150) is fixedly assembled with the limiting supporting member (230) located above the mounting cavity (110).

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