Rapidly-detachable flow battery pile segmentation fastening assembly

Abstract

The utility model belongs to the field of fastening devices of flow battery stacks, and particularly relates to a flow battery stack sectional fastening assembly capable of being quickly disassembled, which comprises a nut sleeve, one end of the nut sleeve is provided with a left-hand external-thread external hexagonal screw, and the other end of the nut sleeve is provided with a right-hand external-thread external hexagonal screw; the female sleeve is placed in the middle, it is guaranteed that the left-hand internal thread and the right-hand internal thread in the nut sleeve correspond to the left-hand external thread outer hexagonal screw and the right-hand external thread outer hexagonal screw, the nut sleeve begins to be rotated to conduct tightening work, and the nut sleeve can be tightened due to the different screwing directions of the threads. Therefore, the left-hand external-thread external hexagonal screw and the right-hand external-thread external hexagonal screw can be screwed at the same time only by rotating the nut sleeve towards one direction, the workload of maintenance personnel is greatly reduced, and meanwhile, the space occupied by a galvanic pile in a system is also reduced; the fracture risk caused by the long screw rod is reduced, and the manufacturing cost and the maintenance and replacement cost are further reduced.

Description

Technical Field

[0001] The utility model relates to the field of fastening devices for flow battery stacks, in particular to a quickly detachable segmented fastening assembly for a flow battery stack. Background Art

[0002] With the rapid development of flow battery energy storage, flow battery systems are attracting increasing attention. In flow battery systems, the stack is a key core component, and its stability directly affects the operation of the system. As the operation time of the flow battery stack increases, its fastening force will also decrease, and the stack structure may leak internally or externally. At this time, the operator needs to tighten the stack fasteners again. Currently, the stack fastening assembly uses an extension screw and nut assembly for fastening. As the stack power increases, the stack height also increases, which also causes the fastening screw to become longer and longer. Excessive lengthening of the screw will reduce its strength and even cause it to break, making it inconvenient to assemble. With the increasing integration of battery systems, the space occupied by the stack is also constantly shrinking. If a stack fails, it is not easy to extract and replace a single extension screw due to space constraints, and it is even more inconvenient to tighten the entire stack again. Therefore, to address the above problems, a quick-disassembly flow battery stack segmented fastening assembly is proposed. Utility Model Content

[0003] In order to make up for the shortcomings of the existing technology, the problem that excessive lengthening of the screw will reduce its strength or even cause it to break, and it is inconvenient to assemble is solved; the integration of battery systems is getting higher and higher, and the space occupied by the battery stack is constantly compressed. If a battery stack fails, it is not easy to pull out a certain lengthened screw for replacement due to space problems, and it is even more inconvenient to re-tighten and maintain the entire battery stack. The utility model proposes a quickly detachable liquid flow battery stack segmented fastening assembly.

[0004] The technical solution adopted by the present invention to solve its technical problems is: the utility model describes a quickly detachable liquid flow battery stack segment fastening assembly, comprising a nut sleeve, one end of the nut sleeve is provided with a left-handed external hexagonal screw, the other end of the nut sleeve is provided with a right-handed external hexagonal screw, the outside of the left-handed external hexagonal screw is provided with a left-handed internal thread, the outside of the right-handed external hexagonal screw is provided with a right-handed internal thread, the left-handed external hexagonal screw is threadedly connected to the nut sleeve via a left-handed internal thread, the right-handed external hexagonal screw is threadedly connected to the nut sleeve via a right-handed internal thread, the interior of the nut sleeve is provided with a lubrication assembly, and the lubrication assembly extends to the outside of the nut sleeve.

[0005] Preferably, the lubrication assembly includes an oil storage bag, a connecting pipe and an oil guide plate. The oil storage bag is fixedly connected to the inside of the nut sleeve, the connecting pipe is connected to the outside of the oil storage bag, and one end of the connecting pipe extends to the outside of the nut sleeve, and the oil guide plate is fixedly sleeved on the outside of the oil storage bag.

[0006] Preferably, a valve is provided on the connecting pipe, and the valve controls the opening and closing of the connecting pipe.

[0007] Preferably, the left-handed external hexagonal screw, the right-handed external hexagonal screw and the nut sleeve are made of stainless steel or carbon steel.

[0008] Preferably, the thread parameters of the left-handed internal thread and the right-handed internal thread are guaranteed to be consistent.

[0009] Preferably, the lengths of the left-handed externally threaded hexagonal screw, the right-handed externally threaded hexagonal screw and the nut sleeve are adapted to the required fastener size.

[0010] The utility model is beneficial in that:

[0011] The present invention can be used to tighten the left-handed external hexagonal screw and the right-handed external hexagonal screw by inserting the left-handed external hexagonal screw and the right-handed external hexagonal screw into the battery stack from both sides respectively, and then placing the nut sleeve in the middle to ensure that the left-handed internal thread and the right-handed internal thread in the nut sleeve correspond to the left-handed external hexagonal screw and the right-handed external hexagonal screw. Then, the positions of the left-handed external hexagonal screw and the right-handed external hexagonal screw are fixed, and the nut sleeve is started to be tightened. Because the thread rotation directions are different, only the nut sleeve needs to be rotated in one direction to tighten the left-handed external hexagonal screw and the right-handed external hexagonal screw at the same time. This also brings convenience to the subsequent battery stack maintenance and re-tightening operation in the liquid flow battery system. There is no need to tighten from both sides, only the nut sleeve needs to be tightened, which greatly reduces the workload of maintenance personnel and also reduces the space occupied by the battery stack in the system. By replacing the long screw with two short screws, not only the risk of breakage caused by the long screw is reduced, but also the manufacturing cost and repair and replacement cost are reduced.

[0012] 2. In the present invention, when the nut sleeve is rotated, the left-handed external hexagonal screw and the right-handed external hexagonal screw are tightened, so that the left-handed external hexagonal screw and the right-handed external hexagonal screw will move toward the inside of the nut sleeve, so that they will come into contact with the oil guide sheet. The oil guide sheet can conduct the lubricating oil inside the oil storage bag, so that it will penetrate into the left-handed external hexagonal screw and the right-handed external hexagonal screw, thereby lubricating the left-handed external hexagonal screw and the right-handed external hexagonal screw, thereby making their rotation easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the installation structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the overall structure of the utility model;

[0017] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure at point A.

[0018] In the figure: 1. Left-handed external hexagonal screw; 2. Right-handed external hexagonal screw; 3. Nut sleeve; 4. Left-handed internal thread; 5. Right-handed internal thread; 6. Lubrication assembly; 601. Oil storage bag; 602. Connecting pipe; 603. Oil guide plate; 604. Valve. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 4 As shown, a quickly detachable flow battery stack segmented fastening assembly includes a nut sleeve 3, one end of the nut sleeve 3 is provided with a left-handed externally threaded hexagonal screw 1, the other end of the nut sleeve 3 is provided with a right-handed externally threaded hexagonal screw 2, the outside of the left-handed externally threaded hexagonal screw 1 is provided with a left-handed internal thread 4, and the outside of the right-handed externally threaded hexagonal screw 2 is provided with a right-handed internal thread 5, the left-handed externally threaded hexagonal screw 1 is threadedly connected to the nut sleeve 3 via the left-handed internal thread 4, and the right-handed externally threaded hexagonal screw 2 is threadedly connected to the nut sleeve 3 via the right-handed internal thread 5, and a lubrication assembly 6 is provided inside the nut sleeve 3, and the lubrication assembly 6 extends to the outside of the nut sleeve 3;

[0021] During work, the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 are respectively passed through from both sides of the battery stack, and then the nut sleeve 3 is placed in the middle to ensure that the left-handed internal thread 4 and the right-handed internal thread 5 in the nut sleeve 3 correspond to the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2. After that, the positions of the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 are fixed, and the nut sleeve 3 is started to be rotated for tightening. Because of the different thread rotation directions, the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 can be tightened at the same time by only rotating the nut sleeve 3 in one direction.

[0022] Furthermore, the lubrication assembly 6 includes an oil reservoir 601, a connecting tube 602, and an oil guide plate 603. The oil reservoir 601 is fixedly connected to the interior of the nut sleeve 3, the connecting tube 602 is connected to the exterior of the oil reservoir 601, and one end of the connecting tube 602 extends to the exterior of the nut sleeve 3. The oil guide plate 603 is fixedly sleeved on the exterior of the oil reservoir 601.

[0023] During operation, when the nut sleeve 3 is rotated, the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 are tightened, so that the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 will move toward the inside of the nut sleeve 3, so that they will contact the oil guide plate 603. The oil guide plate 603 can conduct the lubricating oil inside the oil storage bag 601, so that it will penetrate into the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2, so that the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 can be lubricated, making it easier to rotate. The connecting tube 602 can add lubricating oil to the inside of the oil storage bag 601.

[0024] Furthermore, a valve 604 is provided on the connecting pipe 602, and the valve 604 controls the opening and closing of the connecting pipe 602;

[0025] During operation, the valve 604 can be opened or closed, so that the connecting pipe 602 can be delivered or closed, which makes it convenient to add lubricating oil into the interior of the oil storage bag 601.

[0026] Furthermore, the left-handed external hexagonal screw 1, the right-handed external hexagonal screw 2 and the nut sleeve 3 are made of stainless steel or carbon steel;

[0027] When working, stainless steel or carbon steel materials have a longer service life.

[0028] Furthermore, the thread parameters of the left-hand internal thread 4 and the right-hand internal thread 5 are guaranteed to be consistent;

[0029] During operation, this can ensure the accuracy of the battery stack during tightening and assembly.

[0030] Furthermore, the lengths of the left-handed externally threaded hexagonal screw 1, the right-handed externally threaded hexagonal screw 2 and the nut sleeve 3 are adapted to the required fastener dimensions;

[0031] When working, compatible components can reduce manufacturing costs and repair and replacement costs.

[0032] Working principle: When assembling the fastening components of the battery stack, follow Figure 1 Install it in the following way: first, insert the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 from both sides of the battery stack respectively, and then put the nut sleeve 3 in the middle, ensuring that the left-handed internal thread 4 and the right-handed internal thread 5 in the nut sleeve 3 correspond to the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2. Then fix the positions of the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2, and start rotating the nut sleeve 3 to tighten. Because the thread rotation directions are different, you only need to put the nut sleeve 3 can be rotated in one direction to tighten the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 at the same time; this also brings convenience to the subsequent maintenance and re-tightening of the battery stack in the liquid flow battery system. There is no need to tighten from both sides, only the nut sleeve 3 needs to be tightened, which greatly reduces the workload of maintenance personnel and also reduces the space occupied by the battery stack in the system; by replacing the long screw with two short screws, not only the risk of breakage caused by the long screw can be reduced, but also the manufacturing cost and repair and replacement cost can be reduced.

[0033] When the nut sleeve 3 is rotated, the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 are tightened, so that the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 will move toward the inside of the nut sleeve 3, so that they will come into contact with the oil guide plate 603. The oil guide plate 603 can conduct the lubricating oil inside the oil storage bag 601, so that it will penetrate into the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2, so that the left-handed external hexagonal screw 1 and the right-handed external hexagonal screw 2 can be lubricated, making it easier to rotate. The connecting tube 602 can add lubricating oil to the inside of the oil storage bag 601.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A quickly detachable flow battery stack segment fastening assembly, characterized by: The invention comprises a nut sleeve (3), one end of the nut sleeve (3) is provided with a left-handed external hexagonal screw (1), the other end of the nut sleeve (3) is provided with a right-handed external hexagonal screw (2), the outside of the left-handed external hexagonal screw (1) is provided with a left-handed internal thread (4), the outside of the right-handed external hexagonal screw (2) is provided with a right-handed internal thread (5), the left-handed external hexagonal screw (1) is threadedly connected to the nut sleeve (3) through the left-handed internal thread (4), the right-handed external hexagonal screw (2) is threadedly connected to the nut sleeve (3) through the right-handed internal thread (5), and the inside of the nut sleeve (3) is provided with a lubrication component (6), and the lubrication component (6) extends to the outside of the nut sleeve (3).

2. A quickly detachable flow battery stack segment fastening assembly according to claim 1, characterized in that: The lubricating assembly (6) comprises an oil storage bag (601), a connecting pipe (602) and an oil guide plate (603); the oil storage bag (601) is fixedly connected to the interior of the nut sleeve (3); the connecting pipe (602) is connected to the exterior of the oil storage bag (601), and one end of the connecting pipe (602) extends to the exterior of the nut sleeve (3); and the oil guide plate (603) is fixedly sleeved on the exterior of the oil storage bag (601).

3. The quickly detachable flow battery stack segment fastening assembly according to claim 2, characterized in that: The connecting pipe (602) is provided with a valve (604), and the valve (604) controls the opening and closing of the connecting pipe (602).

4. The quickly detachable flow battery stack segment fastening assembly according to claim 1, characterized in that: The left-handed external hexagonal screw (1), the right-handed external hexagonal screw (2) and the nut sleeve (3) are made of stainless steel or carbon steel.

5. The quickly detachable flow battery stack segment fastening assembly according to claim 1, characterized in that: The thread parameters of the left-handed internal thread (4) and the right-handed internal thread (5) are guaranteed to be consistent.

6. The quickly detachable flow battery stack segment fastening assembly according to claim 1, characterized in that: The lengths of the left-handed externally threaded hexagonal screw (1), the right-handed externally threaded hexagonal screw (2) and the nut sleeve (3) are adapted to the required fastener dimensions.

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