A uniformly fastened stacked battery stack

Abstract

The present invention discloses a uniformly fastened stacked battery stack, which relates to the technical field of battery stack device design and manufacturing, including two guard plates and two pole plates located between the two guard plates, and also includes: a stacked battery stack structure, wherein the stacked battery stack structure is arranged between the two pole plates; the stacked battery stack structure includes at least five flow field plates, and an insulating gasket is arranged between every two adjacent flow field plates. The characteristic of the present invention is that after the fixing screws are fixed by a torque wrench, the torque value between every two adjacent flow field plates can be adjusted to be consistent, thereby ensuring that the degree of compression between every two adjacent flow field plates is consistent, and then the sealing between every two adjacent flow field plates is effectively guaranteed, avoiding the possibility of material leakage in the middle of the battery stack. For this type of fixing method, the more flow field plates a battery stack has, the more obvious the effect of improving the sealing performance is, so that the safety of the battery stack as a whole is significantly improved during use.

Description

Technical Field

[0001] The present invention relates to the technical field of design and manufacturing of battery stack devices, and in particular to a uniformly fastened stacked battery stack and a customized device thereof. Background Art

[0002] As the cost of renewable electricity continues to decrease, stacked battery systems are gradually being widely used in a variety of scenarios, such as hydrogen-oxygen, methanol (acid) fuel cells, water decomposition to produce hydrogen, carbon dioxide reduction, nitrogen / nitrogen oxide reduction electrolysis cells, etc. The sealing between the flow field plates in the stacked battery is very important. If the seal is not tight and material leaks, the efficiency of the battery will be greatly reduced. At the same time, the leakage of flammable and explosive materials can cause safety problems such as fire and explosion.

[0003] The existing battery stack products on the market are all fixed and sealed as a whole. However, when the whole is fixed and sealed, only the tightness of the flow field plate close to the outermost guard plate can meet the sealing requirements. The closer to the center of the battery stack, the smaller the tightness. The more flow field plates there are, the greater the difference in tightness, making it difficult to ensure the sealing effect between the flow field plates closer to the center. Once a leak occurs, it will bring irreversible losses and huge safety hazards, which seriously limits the safe application of stacked battery technology in various fields. The industry has also solved the above problems by reducing the thickness of the flow field plate, but it cannot fundamentally solve or ensure that the clamping force between each plate is consistent. Therefore, it still needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a uniformly fastened stacked battery stack and a customized device thereof to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0006] The present invention provides a uniformly fastened stacked fuel cell stack, which is applicable to many research fields such as hydrogen-oxygen fuel cells, methanol (acid) fuel cells, water decomposition hydrogen production, carbon dioxide reduction, nitrogen / nitrogen oxide reduction electrolytic cells, etc. It has wide application and strong adaptability, and includes two guard plates and two pole plates located between the two guard plates, and also includes:

[0007] A stacked battery stack structure, wherein the stacked battery stack structure is arranged between two electrode plates; the stacked battery stack structure comprises at least five flow field plates, and an insulating gasket is arranged between every two adjacent flow field plates, and the five flow field plates are flow field plate A, flow field plate B, flow field plate C, flow field plate D and flow field plate E; insulating gaskets are arranged between the contact surface between the guard plate and the electrode plate and between the contact surface between the electrode plate and the stacked battery stack structure;

[0008] And an overall locking structure, used to make the guard plate, the electrode plate and the stacked battery structure closely attached to each other;

[0009] Among them, the A flow field plate and the E flow field plate are each provided with four fixing holes, the B flow field plate, the C flow field plate and the D flow field plate are each provided with eight fixing holes, and fixing screws are provided in the four fixing holes in each flow field plate; the fixing screws on every two adjacent flow field plates have non-overlapping projections on the same vertical plane.

[0010] Preferably, the overall locking structure includes mounting holes opened on the guard plate, the electrode plate, the insulating gasket and the flow field plate, and also includes mounting screws and nuts for passing through the mounting holes.

[0011] Preferably, the guard plate, the electrode plate, the insulating gasket and the flow field plate are all provided with guide holes, and guide rods are arranged in the guide holes.

[0012] Preferably, the insulating gasket is provided with eight holes, and the insulating gasket is made of silicone.

[0013] The present invention provides a customized device using the above-mentioned uniformly tightened stacked battery stack, including a base plate and two bracket plates fixed on the top of the base plate, and a pressing component, a clamping component, a placement component and a storage box are arranged in sequence from top to bottom between the two bracket plates; wherein the clamping component includes a connecting plate, and a plurality of through holes and slots are opened on the connecting plate; and an opening component for opening holes in the flow field plate is placed on the connecting plate.

[0014] Preferably, the opening assembly includes a first mounting plate, a second mounting plate and a vertical plate for fixing the first mounting plate and the second mounting plate, and a clamping column passing through the second mounting plate is arranged at the top of the second mounting plate; a fixing box is arranged at the bottom of the first mounting plate, and an opening part is arranged inside the fixing box.

[0015] Preferably, the pressing assembly comprises a cylinder fixed between two support plates and a pressing plate connected to an output end of the cylinder.

[0016] Preferably, the placement assembly comprises a fixing frame fixed between two bracket plates, a plurality of balls are arranged on the inner side wall of the fixing frame, and a bearing frame is arranged at the bottom of the fixing frame.

[0017] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0018] 1. The characteristic of the present invention is that after the fixing screws are fixed by a torque wrench, the torque value between each two adjacent flow field plates can be adjusted to be consistent, thereby ensuring that the degree of compression between each two adjacent flow field plates remains consistent, and then the sealing between each two adjacent flow field plates is effectively guaranteed, avoiding the possibility of material leakage in the middle of the battery stack. This fixing method has a more obvious effect on improving the sealing performance of the battery stack with more flow field plates, which significantly improves the safety of the battery stack as a whole during use, greatly improves the actual use effect of the battery stack, and broadens the actual application scope of the battery stack.

[0019] 2. Through the different positions of the clamping columns in different hole-opening assemblies, the hole-opening parts corresponding to the objects that need to be opened can be quickly replaced. At the same time, it is also convenient for users to quickly understand what kind of hole-opening parts are in the fixed box, which is conducive to quickly and efficiently completing the opening of various parts on the battery stack structure, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] Figure 1 It is a schematic diagram of the overall structure of the stacked battery stack of the present invention;

[0023] Figure 2 is an exploded view of the stacked battery stack of the present invention;

[0024] Figure 3 It is a schematic diagram of the partial structure of the stacked battery stack of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the insulating gasket in the stacked battery stack of the present invention;

[0026] Figure 5 It is a schematic diagram of the overall structure of the customization device of the present invention;

[0027] Figure 6 is a front view of the custom device of the present invention;

[0028] Figure 7It is a schematic diagram of the structure of the placement component and the clamping component in the customization device of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the hole opening component in the customization device of the present invention;

[0030] Fig. 9 It is a schematic diagram of the internal structure of the fixed box in the customization device of the present invention;

[0031] In the figure:

[0032] 1. Guard plate; 2. Plate; 3. Stacked battery structure; 301. A flow field plate; 302. B flow field plate; 303. C flow field plate; 304. D flow field plate; 305. E flow field plate; 4. Insulation gasket; 5. Mounting screws; 6. Nuts; 7. Guide holes; 8. Guide rods; 9. Fixing holes; 10. Fixing screws; 11. Holes; 12. Mounting holes; 13. Bottom plate; 14. Bracket plate; 15. Pressing assembly; 151, cylinder; 152, pressing plate; 16, clamping assembly; 161, connecting plate; 162, through hole; 163, notch; 17, placing assembly; 171, fixing frame; 172, supporting frame; 173, ball bearing; 18, storage box; 19, opening assembly; 191, first mounting plate; 192, second mounting plate; 193, vertical plate; 194, clamping column; 195, fixing box. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] See also Figure 1-Figure 4 , a uniformly fastened stacked battery stack, comprising two guard plates 1 and two pole plates 2 located between the two guard plates 1, and further comprising:

[0035] A stacked battery stack structure 3, wherein the stacked battery stack structure 3 is arranged between two electrode plates 2; the stacked battery stack structure 3 includes at least five flow field plates, and an insulating gasket 4 is arranged between every two adjacent flow field plates, and the five flow field plates are respectively A flow field plate 301, B flow field plate 302, C flow field plate 303, D flow field plate 304 and E flow field plate 305; an insulating gasket 4 is arranged between the contact surface of the guard plate 1 and the electrode plate 2 and between the contact surface of the electrode plate 2 and the stacked battery stack structure 3;

[0036] And an overall locking structure, used to make the guard plate 1, the electrode plate 2 and the stacked battery structure 3 closely attached to each other;

[0037] Among them, the A flow field plate 301 and the E flow field plate 305 are each provided with four fixing holes 9, and the B flow field plate 302, the C flow field plate 303 and the D flow field plate 304 are each provided with eight fixing holes 9, and the four fixing holes 9 in each flow field plate are each provided with fixing screws 10; the fixing screws 10 on every two adjacent flow field plates have non-overlapping projections on the same vertical plane.

[0038] Furthermore, the overall locking structure includes mounting holes 12 opened on the guard plate 1 , the electrode plate 2 , the insulating gasket 4 and the flow field plate, and also includes mounting screws 5 and nuts 6 for penetrating the mounting holes 12 .

[0039] Furthermore, the guard plate 1 , the electrode plate 2 , the insulating gasket 4 and the flow field plate are all provided with guide holes 7 , and guide rods 8 are arranged in the guide holes 7 .

[0040] Furthermore, eight holes 11 are provided on the insulating gasket 4, and the insulating gasket 4 is made of silicone. The eight holes 11 are used for the fixing screws 10 to pass through. At the same time, the four holes 11 at the four corners of the figure are connected to the guide holes 7 for the convenience of production. In actual use, they may be connected or not, depending on the manufacturer.

[0041] Specifically, when in use, firstly, the guide rod 8 is passed through the guide hole 7 on one of the guard plates 1 (it can pass through the left guard plate 1, such as Figure 2 As shown), then the plate 2, the insulating gasket 4 and the stacked battery structure 3 are arranged in accordance with Figure 2 The order in the figure is sequentially placed on the guide rod 8 from left to right (through the guide holes 7 on each component);

[0042] Prior to this, the stacked battery structure 3 needs to be assembled, and the specific assembly is as follows:

[0043] like Figure 3As shown, an insulating gasket 4 is first placed between the A flow field plate 301 and the B flow field plate 302. Since the A flow field plate 301 is only provided with four fixing holes 9, and the B flow field plate 302 is provided with eight fixing holes 9, the four fixing holes 9 on the A flow field plate 301 and the four corresponding fixing holes 9 on the B flow field plate 302 are fixed by fixing screws 10, and then the four fixing screws 10 are tightened with a torque wrench; then an insulating gasket 4 is placed between the B flow field plate 302 and the C flow field plate 303, and the two are fixed by fixing screws 10 and a torque wrench. The four fixing holes 9 on the B flow field plate 302 were originally fixed by the four fixing screws 10 on the A flow field plate 301, so that only four fixing holes 9 are available. The four fixing holes 9 are used to fix the B flow field plate 302 and the C flow field plate 303, and the same operation is performed between the C flow field plate 303 and the D flow field plate 304. This makes the fixing screws 10 between every two adjacent flow field plates staggered, that is, the fixing screws 10 on every two adjacent flow field plates mentioned above have non-overlapping projections on the same vertical plane.

[0044] The purpose of doing this is, on the one hand, by interlacing the fixing screws 10 between each two adjacent flow field plates, each two adjacent flow field plates can be effectively fixed and will not be affected by the fixing screws 10; on the other hand, after fixing the fixing screws 10 with a torque wrench, the torque value between each two adjacent flow field plates can be adjusted to be consistent, which ensures that the degree of compression between each two adjacent flow field plates remains consistent, thereby effectively ensuring the sealing between each two adjacent flow field plates. With this type of fixing method, the more flow field plates there are, the more obvious the sealing effect is, so that the safety of the entire battery stack is significantly improved when it is in use, and the use effect is better;

[0045] After they are fixed in pairs, a whole stacked battery stack is formed, and then the guard plate 1, the pole plate 2 and the stacked battery stack structure 3 are locked and fixed by installing screws 5 and nuts 6 to form the whole battery stack structure.

[0046] See also Figure 5-Figure 9 A customized device using the above-mentioned uniformly tightened stacked battery stack includes a base plate 13 and two bracket plates 14 fixed on the top of the base plate 13, and a pressing component 15, a clamping component 16, a placement component 17 and a storage box 18 are arranged between the two bracket plates 14 from top to bottom; wherein, the clamping component 16 includes a connecting plate 161, and a plurality of through holes 162 and notches 163 are opened on the connecting plate 161; a hole opening component 19 for opening holes in the flow field plate is placed on the connecting plate 161.

[0047] Furthermore, the opening assembly 19 includes a first mounting plate 191, a second mounting plate 192 and a vertical plate 193 for fixing the first mounting plate 191 and the second mounting plate 192, and a clamping column 194 that passes through the second mounting plate 192 is arranged at the top of the second mounting plate 192; a fixing box 195 is arranged at the bottom of the first mounting plate 191, and an internal opening part of the fixing box 195.

[0048] Furthermore, the pressing assembly 15 includes a cylinder 151 fixed between two support plates 14 and a pressing plate 152 connected to an output end of the cylinder 151 .

[0049] Furthermore, the placement component 17 includes a fixing frame 171 fixed between the two bracket plates 14 , and a plurality of balls 173 are arranged on the inner side wall of the fixing frame 171 , and a supporting frame 172 is arranged at the bottom of the fixing frame 171 .

[0050] Specifically, when in use, a designated object is placed inside the fixed frame 171, and the object is clamped using the ball 173 inside the fixed frame 171. The material of the ball 173 can be set to a slightly elastic silicone or rubber material, so that it has a certain buffering and protective effect on the object; of course, in order to achieve a better positioning effect on the object, the ball 173 can also be set to a hard metal material, including but not limited to a hard metal with magnetism, to ensure the clamping effect; the specific material can be determined according to production requirements.

[0051] The above-mentioned objects include but are not limited to the flow field plate, insulating gasket 4, and electrode plate 2 shown in the figure; after the specific use of the specified object, it can be perforated by replacing different perforating components 19; in the perforating components 19, only the perforating parts inside the fixed box 195 are different, and the rest of the structures are the same; and the perforating parts inside the fixed box 195 include but are not limited to motors, gears, drill bits, threaded holes, etc. This is an existing mature technology. Fig. 9 In the figure, the opening parts inside the device box are only schematic structures. The specific structure to be used depends on the object to be opened. For example, if a hole is opened on the electrode plate 2, a drill can be used. If a hole is opened on the fixing hole 9 on the flow field plate, a threaded tap is required.

[0052] Furthermore, in order to facilitate people's use, different opening components 19 can be replaced through the clamping component 16. The specific operation is: the vertical plate 193 is horizontally inserted into the groove 163 and slides inside it, and the distance between the first mounting plate 191 and the second mounting plate 192 exceeds twice the thickness of the connecting plate 161, so that the clamping column 194 is not blocked when moving, and after sliding to the maximum limit, the clamping column 194 can be engaged with the through hole 162 to complete the installation of the opening component 19 on the clamping component 16, and the installation and removal are very fast.

[0053] And as Figure 7 and Figure 8 As shown, a plurality of through holes 162 are provided on the connecting plate 161 in the clamping assembly 16. The through holes 162 actually correspond to the guide holes 7 and the fixing holes 9 one by one. The through holes 162 with two different shadows in the figure represent the fixing points of the fixing screws 10 that are offset from each other on the two flow field plates. Figure 8 The two types of shadowed clamping columns 194 in the figure correspond to each other; taking one of the hole-opening components 19 as an example (the far right), the clamping column 194 on this hole-opening component 19 corresponds to the hole-opening part inside the fixed box 195, and the clamping column 194 on this hole-opening component 19 only corresponds to the guide hole 7. This makes it possible to know which hole-opening part in the fixed box 195 is opening which object through the position of the clamping column 194 on the hole-opening component 19, which is conducive to quickly and efficiently completing the opening of various parts on the stack structure, and then facilitating the rapid processing of the specified flow field plate, and the use effect is good.

[0054] After the hole-opening component 19 is installed on the connecting plate 161, the cylinder 151 drives the pressing plate 152 to press down, so that the hole-opening component 19 and the clamping component 16 can be lowered (the side of the connecting plate 161 and the side of the bracket plate 14 slide up and down by means of a slide block, and elastic parts such as springs are arranged in the slide), so that the hole-opening part in the hole-opening component 19 opens a hole for the object in the placing component 17; at the same time, according to Figure 6 It can be seen that cameras are provided on opposite sides of the two bracket plates 14, and the camera illumination direction is toward the placement component 17, so as to help people monitor through the camera when drilling holes, and further improve the drilling effect.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A uniformly fastened stacked battery stack, comprising two guard plates (1) and two pole plates (2) located between the two guard plates (1), characterized in that: Also includes: A stacked battery stack structure (3), the stacked battery stack structure (3) being arranged between two electrode plates (2); the stacked battery stack structure (3) comprising at least five flow field plates, and an insulating gasket (4) being arranged between every two adjacent flow field plates, the five flow field plates being respectively an A flow field plate (301), a B flow field plate (302), a C flow field plate (303), a D flow field plate (304) and an E flow field plate (305); an insulating gasket (4) being arranged between the contact surface between the guard plate (1) and the electrode plate (2) and between the contact surface between the electrode plate (2) and the stacked battery stack structure (3); and an overall locking structure, which is used to tightly adhere the guard plate (1), the electrode plate (2) and the stacked battery structure (3) to each other; The A flow field plate (301) and the E flow field plate (305) are each provided with four fixing holes (9), the B flow field plate (302), the C flow field plate (303) and the D flow field plate (304) are each provided with eight fixing holes (9), and fixing screws (10) are each provided in the four fixing holes (9) in each flow field plate; and the fixing screws (10) on every two adjacent flow field plates have non-overlapping projections on the same vertical plane.

2. The uniformly fastened stack according to claim 1, characterized in that: The integral locking structure comprises mounting holes (12) formed on the guard plate (1), the electrode plate (2), the insulating gasket (4) and the flow field plate, and also comprises mounting screws (5) and nuts (6) for penetrating the mounting holes (12).

3. The uniformly fastened stack according to claim 1, characterized in that: The guard plate (1), the electrode plate (2), the insulating gasket (4) and the flow field plate are all provided with guide holes (7), and guide rods (8) are arranged in the guide holes (7).

4. The uniformly fastened stacked battery stack according to claim 1, characterized in that: The insulating gasket (4) is also provided with eight holes (11), and the insulating gasket (4) is made of silica gel.

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