Battery pack degumming device and battery pack degumming method

Abstract

The present invention relates to the field of battery recycling technology, and in particular to a battery pack degumming device and a battery pack degumming method. The battery pack degumming device of the present invention comprises a liquid conveying structure, a degumming box assembly, and a storage box for accommodating degumming liquid; the degumming box assembly comprises a degumming box and a degumming box cover covering the top opening of the degumming box; the degumming box cover is movably connected to the degumming box, and the liquid conveying structure comprises a first conveying pipe, a second conveying pipe, an intermediate conveying pipe, and a liquid conveying pump arranged on the intermediate conveying pipe; both ends of the first conveying pipe and both ends of the second conveying pipe are respectively connected to the storage box and the degumming box assembly. The battery pack degumming device of the present invention can realize batch degumming of batteries with high efficiency; it is also conducive to reducing equipment costs and has high reliability; it can also prevent harmful gases from leaking from the degumming box assembly and polluting the environment.

Description

Technical Field

[0001] The present invention relates to the technical field of battery recycling, and in particular to a battery pack degumming device and a battery pack degumming method. Background Art

[0002] With the progress and development of society, the demand for energy storage is increasing, and the scale of secondary batteries such as lithium batteries and lead-acid batteries required for energy storage is also increasing. These lithium batteries, lead-acid batteries and other secondary batteries are usually discarded after reaching their life cycle. The random discarding of these discarded secondary batteries will cause damage to the environment. In addition, if these discarded secondary batteries can be recycled, they can also generate objective economic value; therefore, it is necessary to recycle these discarded secondary batteries. At present, the recycling of lithium batteries usually requires the battery pack to be degummed before subsequent processing.

[0003] CN116851410A discloses a battery cell adhesive degumming device, comprising: a degumming tank, a soaking chamber for accommodating an organic solvent is formed in the degumming tank; a filter element, the filter element is transversely built into the soaking chamber to separate the soaking chamber into an upper cavity and a lower cavity, the upper cavity is used to place a plurality of battery cells, and the filter element is provided with a plurality of through grooves connecting the upper cavity and the lower cavity, so that the adhesive detached from the battery cells can fall into the lower cavity through the through grooves; a heating element, the heating element is arranged in the degumming tank, and is used for heating the organic solvent in the soaking chamber; a control unit, the control unit comprises a temperature sensor and a single-chip microcomputer electrically connected to each other, the temperature sensor is used for collecting the heating temperature value of the heating element, and the single-chip microcomputer is used for controlling the output power of the heating element based on the collected information of the temperature sensor so that the temperature of the organic solvent in the soaking chamber is maintained within a set temperature range.

[0004] However, the battery core adhesive removal device disclosed in CN116851410A has room for further improvement in terms of efficiency and reliability. At the same time, the removal tank of the battery core adhesive removal device disclosed in CN116851410A is connected to the atmosphere, and harmful gases will leak into the air to pollute the environment, which is not conducive to the health of operators. Summary of the invention

[0005] An object of the present invention is to solve or alleviate the above technical problems.

[0006] The means adopted by the present invention is a battery pack degumming device, which includes a liquid conveying structure, a degumming box assembly and a storage box for accommodating degumming liquid; the degumming box assembly includes a degumming box and a degumming box cover covering the top opening of the degumming box; the degumming box cover is movably connected to the degumming box, and the liquid conveying structure includes a first conveying pipe, a second conveying pipe, an intermediate conveying pipe and a liquid conveying pump arranged on the intermediate conveying pipe; the two ends of the first conveying pipe are respectively connected to the storage box and the degumming box assembly, and the two ends of the second conveying pipe are respectively connected to the storage box and the degumming box assembly; the first reversing valve and the second reversing valve are arranged at both ends of the intermediate conveying pipe, and the first reversing valve and the second reversing valve are respectively arranged on the first conveying pipe and the second conveying pipe.

[0007] The effects achieved by the present invention are that it can realize batch degumming of batteries with high efficiency; it is also beneficial to reduce equipment costs and has high reliability; and it can also prevent harmful gases from leaking from degumming box components and polluting the environment.

[0008] A further technical solution is that the volume of the material storage box is larger than the volume of the degumming box assembly, and the liquid conveying structure also includes an overflow pipe, both ends of which are respectively connected to the material storage box and the degumming box assembly, and are located above the higher one of the first conveying pipe and the second conveying pipe; and / or, one of the material storage box and the degumming box assembly is provided with a liquid level detection device.

[0009] This technical solution can ensure that the degumming box reaches a sufficient height to ensure that the battery pack is immersed, while preventing excessive degumming liquid in the degumming box assembly from overflowing.

[0010] According to a further technical solution, the degumming box is provided with an air inlet and an exhaust port; an air valve is provided on the air inlet, and the exhaust port is used to communicate with an air purification device.

[0011] This technical solution can further prevent harmful gases from leaking from the degumming box assembly and polluting the environment.

[0012] According to a further technical solution, the liquid conveying structure also includes a filtering device; a first material storage pipe valve and a first degumming pipe valve which are manual valves are respectively provided at both ends of the first conveying pipe, and a second material storage pipe valve and a second rubber pipe valve which are manual valves are respectively provided at both ends of the second conveying pipe, and the filtering device is arranged between the first degumming pipe valve and the first reversing valve.

[0013] The technical solution can remove impurities in the degumming liquid flowing back to the storage box from the degumming box assembly, and is convenient for cleaning or replacing the filtering device.

[0014] A further technical solution also includes a steel cable, a quick lifting structure and a lifting frame with a lifting connection part at the top; the quick lifting structure includes a steel cable connector, which is directly or indirectly arranged on the degumming box cover; both ends of the steel cable are respectively connected to the lifting connection part and the steel cable connector; when the lifting frame is placed in the degumming box, the steel cable makes the degumming box cover tend to approach the degumming box.

[0015] This technical solution can ensure the sealing between the degumming box cover and the degumming box, and can improve the lifting efficiency.

[0016] A further technical solution is that the rapid lifting structure also includes a steel cable elastic member and a steel cable guide wheel directly or indirectly arranged on the degumming box cover, the steel cable passes around the steel cable guide wheel, and the steel cable connecting member is directly or indirectly connected to the degumming box cover in a horizontal linear sliding manner; the steel cable connecting member is closer to the center point of the degumming box cover than the steel cable guide wheel, one end of the steel cable elastic member is directly or indirectly connected to the steel cable connecting member, so that the steel cable connecting member has a tendency to move away from the steel cable guide wheel, and when the lifting frame is placed in the degumming box, the steel cable between the steel cable guide wheel and the lifting connection part is lower than the steel cable between the steel cable connecting member and the steel cable guide wheel.

[0017] This technical solution can ensure that the lifting frame and battery pack are relatively stable when lifted by the degumming box cover; under the premise of fully utilizing the volume of the degumming box, it can prevent the steel cable from falling into the degumming liquid in the degumming box due to automatic sagging; it can ensure that the steel cable connector slides horizontally and linearly smoothly with high reliability, and can also ensure the sealing between the degumming box cover and the degumming box.

[0018] A further technical solution is that the rapid lifting structure also includes a synchronization disk and a synchronization connecting rod, and the synchronization disk can rotate relative to the degumming box cover; the two ends of the synchronization connecting rod are respectively hinged to the synchronization disk and the steel cable connecting piece; when the degumming box cover is lifted, the synchronization connecting rod passes through the rotation axis of the synchronization disk, and one end of the steel cable elastic piece is connected to the synchronization disk to provide elastic force.

[0019] This technical solution can ensure that the posture of the hoisting frame is stable when the degumming box cover is hoisted and when the degumming box cover is placed in the degumming box.

[0020] A further technical solution is that the rapid lifting structure also includes a sealing elastic part and a lifting plate vertically connected to the degumming box cover in a linear sliding manner, the sealing elastic part is respectively connected to the lifting plate and the degumming box cover so that the lifting plate has a tendency to move upward relative to the degumming box cover; the steel cable guide wheel is arranged on the degumming box cover, the steel cable connecting part is horizontally connected to the lifting plate in a linear sliding manner, and the synchronous disk is hinged to the lifting plate; the synchronous disk is provided with an upper extension body, the upper extension body is provided with a spiral groove, and the degumming box cover is provided with a spiral groove pin inserted into the spiral groove.

[0021] This technical solution can make each steel cable connector move synchronously in a straight line to ensure reliability; it can also automatically adapt to the height deviation of the lifting frame and ensure the sealing between the degumming box cover and the degumming box.

[0022] A further technical solution is that the quick lifting structure also includes a supported plate, a limit bolt and a height adjustment nut; the lifting plate is provided with a lifting guide rod, the lifting guide rod is vertically and linearly connected to the degumming box cover in a sliding manner, the lifting guide rod penetrates to the top of the degumming box cover and is vertically and linearly connected to the supported plate in a sliding manner, the height adjustment nut is threadedly connected to the lifting guide rod and supports the supported plate, the sealing elastic part is a spring and is sleeved on the lifting guide rod, the two ends of the sealing elastic part respectively support the supported plate and the degumming box cover, the limit bolt is threadedly connected to the supported plate and can support the degumming box cover.

[0023] This technical solution can adjust the elastic force of the sealing elastic member and the extreme position of the lifting plate relative to the degumming box cover as required.

[0024] The present invention also provides a battery pack degumming method, which uses the above-mentioned battery pack degumming device and includes the following steps: placing all battery packs into a degumming box from the top opening of the degumming box; starting a liquid delivery pump to deliver degumming liquid from a storage box to a degumming box assembly until the degumming liquid soaks all battery packs and is left to stand; starting a liquid delivery pump to deliver degumming liquid from the degumming box assembly to a storage box until all battery packs are exposed from the degumming liquid; and lifting all battery packs out from the top opening of the degumming box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of the battery pack debonding device of the first embodiment. Figure 1 .

[0026] Figure 2 This is a three-dimensional schematic diagram of the battery pack debonding device of the first embodiment. Figure 2 .

[0027] Figure 3 It is a side view schematic diagram of the battery pack degumming device of the first embodiment.

[0028] Figure 4 yes Figure 3 An enlarged schematic diagram of point A.

[0029] Figure 5 It is a schematic diagram of a three-dimensional decomposition of the battery pack degumming device of the first embodiment.

[0030] Figure 6 It is a partial schematic diagram of the top view of the battery pack debonding device of the first embodiment Figure 1 ; The overflow pipe is not drawn.

[0031] Figure 7It is a partial schematic diagram of the top view of the battery pack debonding device of the first embodiment Figure 2 ; The overflow pipe is not drawn.

[0032] Figure 8 The degumming box cover, the hoisting frame and the quick hoisting structure of the second embodiment are shown in FIG. Figure 1 .

[0033] Fig. 9 The degumming box cover, the hoisting frame and the quick hoisting structure of the second embodiment are shown in FIG. Figure 2 .

[0034] Fig.10 The debonding box cover and the quick lifting structure of the second embodiment are shown in a three-dimensional exploded view. Figure 1 .

[0035] Fig.11 The debonding box cover and the quick lifting structure of the second embodiment are shown in a three-dimensional exploded view. Figure 2 .

[0036] Fig.12 2 is a perspective schematic diagram of a steel cable connector according to the second embodiment.

[0037] Fig.13 4 is a schematic three-dimensional diagram of a synchronization disk according to the second embodiment.

[0038] Fig.14 It is a bottom view schematic diagram of the degumming box cover and the quick lifting structure of the second embodiment.

[0039] Fig.15 The side view of the degumming box cover and the quick lifting structure of the second embodiment is shown in FIG. Figure 1 ; The degumming box cover is in a state of being lifted by a lifting device.

[0040] Fig.16 The side view of the degumming box cover and the quick lifting structure of the second embodiment is shown in FIG. Figure 2 ; The degumming box cover is in the state of being placed in the degumming box.

[0041] Fig.17 yes Fig.14 An enlarged schematic diagram of point B; wherein the steel cable elastic member and the rotating pull pin are not drawn.

[0042] Arrow 1 ARR1; Arrow 2 ARR2; Arrow 3 ARR3; Line 1 LINE1; Line 2 LINE2; Line 3 LINE3; Line 4 LINE4; Line 5 LINE5; Storage box 1; Liquid delivery structure 2; First delivery pipe 21; First storage pipe valve 211; First degumming pipe valve 213; Filter device 214; Second delivery pipe 22; Second storage pipe valve 221; Second glue pipe valve 223; Intermediate delivery pipe 23; First reversing valve 231; Second reversing valve 232; Overflow pipe 28; Liquid delivery pump 29; Degumming box assembly 3; Degumming box 31; Degumming box cover 32; Sealing pad 321; Screw groove pin 324; Box cover hoisting ring 329; Air inlet 38; exhaust port 39; lifting frame 4; lifting connection part 41; steel cable 42; battery pack 49; quick lifting structure 5; steel cable guide wheel 51; steel cable connector 52; steel cable connection end 521; opposite end 522; retraction distance 523; linear guide rail 528; linear slider 529; steel cable pulling elastic member 53; synchronization disk 54; synchronization connecting rod 541; rotation pulling pin 542; reset rotation angle 543; upper extension body 545; spiral groove 546; bearing 549; lifting plate 55; lifting guide rod 551; supported plate 552; limit bolt 553; height adjustment nut 554; sealing elastic member 56; liquid level detection device 8; lifting device 9; lifting beam 99. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention will be described below with reference to the accompanying drawings.

[0044] like Figure 1-7 As shown, the battery pack degumming device of the first embodiment includes a liquid conveying structure 2, a degumming box assembly 3, and a storage box 1 for containing degumming liquid. The degumming liquid is a liquid that causes the battery pack glue to fall off or soften from the battery pack 49 through the principle of dissolution in the prior art. The top cover of the storage box 1 can usually be opened, but it can also be integrated and cannot be opened.

[0045] The degumming box assembly 3 includes a degumming box 31 and a degumming box cover 32 covering the top opening of the degumming box 31. It is easy to understand that the hoisting frame 4 needs to be hoisted into the degumming box 31 from the top opening of the degumming box 31, so the degumming box cover 32 is movably connected to the degumming box 31, for example, the degumming box cover 32 is hinged to the degumming box 31, and the rotation of the degumming box cover 32 can expose the top opening of the degumming box 31. For example, the degumming box cover 32 is detachably connected to the degumming box 31 (such as the connection method described in the second embodiment), that is, the degumming box cover 32 and the degumming box 31 can be separated. Fig. 9 As shown, a box cover hoisting ring 329 is provided on the degumming box cover 32 to facilitate the degumming box cover 32 to be hoisted and moved.

[0046] The liquid delivery structure 2 includes a first delivery pipe 21 , a second delivery pipe 22 , an intermediate delivery pipe 23 , and a liquid delivery pump 29 disposed on the intermediate delivery pipe 23 .

[0047] Both ends of the first conveying pipe 21 are communicated with the material storage box 1 and the degumming box assembly 3 respectively; and both ends of the second conveying pipe 22 are communicated with the material storage box 1 and the degumming box assembly 3 respectively.

[0048] The first reversing valve 231 and the second reversing valve 232 are disposed at both ends of the intermediate delivery pipe 23. The first reversing valve 231 and the second reversing valve 232 are disposed on the first delivery pipe 21 and the second delivery pipe 22, respectively. It is easy to understand that the first reversing valve 231 and the second reversing valve 232 are both L-shaped three-way valves and have two opposite valve ports and a vertical valve port (such as Figure 7 As shown, the two opposite valve ports of the first reversing valve 231 are connected to the first delivery pipe 21, and the vertical valve port is perpendicular to the first delivery pipe 21 and connected to the middle delivery pipe 23); for example, the pipeline inside the spherical valve core is L-shaped, so rotating the spherical valve core can make one of the two opposite valve ports connected to the vertical valve port, but the two opposite valve ports cannot be connected to each other.

[0049] The working principle of this embodiment is that after the battery pack 49 is placed into the degumming box 31 by the lifting device 9, the degumming box cover 32 is moved to seal the top opening of the degumming box 31. Specifically, in order to ensure that the battery pack 49 is in full contact with the degumming liquid, the battery pack 49 is placed on the lifting frame 4 so that there is a gap between each layer of battery packs 49. The lifting frame 4 and the battery pack 49 are usually lifted into the degumming box 31 by the lifting device 9. The lifting device 9 can be a lifting device similar to the electroplating water conveyor line, or it can be an electric hoist set on the lifting beam 99. The lifting frame 4 is usually multi-layered, and a filter frame is connected below the bottom layer of the lifting frame 4 (not shown in the attached figure, the filter frame is a rectangular plate with multiple filter holes, and the filter frame is for collecting some larger impurities, etc.), and the lifting frames 4 of each layer and the lifting frame 4 of the bottom layer and the filter frame are connected by quick clamps (there are many quick clamps in the prior art that can be realized, which are not shown in the attached figure).

[0050] like Figure 6 As shown, arrow ARR1 indicates the approximate flow path and direction of the degumming liquid from the storage box 1 to the degumming box assembly 3 when degumming the battery pack 49. The liquid delivery pump 29 is started and the first reversing valve 231 and the second reversing valve 232 are adjusted. The degumming liquid in the storage box 1 passes through the part of the first delivery pipe 21 close to the storage box 1, the middle delivery pipe 23, and the part of the second delivery pipe 22 close to the degumming box assembly 3 and then enters the degumming box assembly 3. When the liquid level of the degumming liquid in the degumming box assembly 3 is high enough to soak the battery pack 49, the liquid delivery pump 29 is stopped.

[0051] After that, the battery pack 49 is soaked in the degumming liquid in the degumming box assembly 3 for a period of time, and the degumming of the battery pack 49 is completed or at least the degumming is softened. The degumming box cover 32 makes the inner cavity of the degumming box assembly 3 basically sealed, which can prevent harmful gases from leaking from the degumming box assembly 3 and polluting the environment.

[0052] like Figure 7 As shown, arrow 2 ARR2 indicates the approximate flow path and direction of the degumming liquid transported from the degumming box assembly 3 to the storage box 1 after the battery pack 49 is degummed. The liquid delivery pump 29 is started, and the degumming liquid in the degumming box assembly 3 flows back to the storage box 1 through the first delivery pipe 21, the portion of the degumming box assembly 3, the intermediate delivery pipe 23, and the portion of the second delivery pipe 22, which is close to the storage box 1, in turn, until the liquid level of the degumming liquid in the degumming box assembly 3 drops to the point where the battery pack 49 is completely exposed (usually, the hoisting frame 4 is also completely exposed), and the liquid delivery pump 29 is stopped. It is worth noting that, if Figure 6 , 7 As shown, no matter the degumming liquid flows from the storage box 1 to the degumming box assembly 3, or from the degumming box assembly 3 to the storage box 1, the flow direction of the liquid in the intermediate delivery pipe 23 is always from the first delivery pipe 21 to the second delivery pipe 22, which means that the liquid delivery pump 29 does not require a bidirectional liquid driving force, which is beneficial to reducing equipment costs and has higher reliability.

[0053] After that, the battery pack 49 can be lifted out from the top opening of the degumming box 31 by the lifting device 9. The battery pack 49 waits for the next process, such as further degumming or cutting.

[0054] It can be seen from the above that the battery pack degumming device of the first embodiment can realize batch degumming of batteries with high efficiency; it is also beneficial to reduce equipment costs and has high reliability; it can also prevent harmful gases from leaking from the degumming box assembly 3 and polluting the environment.

[0055] The battery pack degumming method of the first embodiment uses the above-mentioned battery pack degumming device, and includes the following steps: placing all the battery packs 49 into the degumming box 31 from the top opening of the degumming box 31; starting the liquid delivery pump 29 to deliver the degumming liquid from the storage box 1 to the degumming box assembly 3 until the degumming liquid soaks all the battery packs 49 and is left to stand; starting the liquid delivery pump 29 to deliver the degumming liquid from the degumming box assembly 3 to the storage box 1 until all the battery packs 49 are exposed from the degumming liquid; and lifting all the battery packs 49 out from the top opening of the degumming box 31.

[0056] As one of the specific embodiments, the volume of the storage box 1 is greater than the volume of the degumming box assembly 3, and the liquid conveying structure 2 also includes an overflow pipe 28, the two ends of the overflow pipe 28 are respectively connected to the storage box 1 and the degumming box assembly 3, and are located above the higher one of the first conveying pipe 21 and the second conveying pipe 22; and / or, one of the storage box 1 and the degumming box assembly 3 is provided with a liquid level detection device 8. The liquid level detection device 8 is an optical sensor or the like arranged on the liquid communication vessel, which can control the start and stop of the liquid delivery pump 29. When the degumming liquid is transported from the storage box 1 to the degumming box assembly 3, it can ensure that the degumming box 31 reaches a sufficient height to ensure the immersion of the battery pack 49, and at the same time, it can prevent the degumming liquid in the degumming box assembly 3 from overflowing due to excess. In particular, the technical solution of the overflow pipe 28 does not need to control the start and stop of the liquid delivery pump 29, which is conducive to simplifying procedures and reducing costs.

[0057] As one of the specific implementations, the degumming box 31 is provided with an air inlet 38 and an exhaust port 39; the air inlet 38 is provided with an air valve (not shown in the drawings), and the exhaust port 39 is used to communicate with an air purification device (not shown in the drawings). The air valve is a conventional valve for opening and closing the air inlet 38, such as a conventional electromagnetic air valve. The air purification device is a device for purifying air in the prior art, which is used to remove the degumming liquid or harmful gas components contained in the air discharged from the exhaust port 39 by the degumming box 31. In the process of soaking and degumming the battery pack 49, air enters from the air inlet 38, and the harmful gas is transported from the exhaust port 39 to the air purification device, so that a certain negative pressure is maintained in the degumming box assembly 3, which can further prevent the harmful gas from leaking from the degumming box assembly 3 and polluting the environment.

[0058] As one of the specific implementations, the liquid conveying structure 2 also includes a filtering device 214; the first material storage pipe valve 211 and the first degumming pipe valve 213, which are manual valves, are respectively provided at both ends of the first conveying pipe 21; the second material storage pipe valve 221 and the second hose valve 223, which are manual valves, are respectively provided at both ends of the second conveying pipe 22. In other words, the first material storage pipe valve 211 is arranged on the first conveying pipe 21 and is close to the material storage box 1 (distinguished by the middle conveying pipe 23); the first degumming pipe valve 213 is arranged on the first conveying pipe 21 and is close to the degumming box assembly 3; the second material storage pipe valve 221 is arranged on the second conveying pipe 22 and is close to the material storage box 1; the second hose valve 223 is arranged on the second conveying pipe 22 and is close to the degumming box assembly 3. Figure 7As shown, the filter device 214 is arranged between the first degumming pipe valve 213 and the first reversing valve 231. The filter device 214 is a device used in the prior art for filtering out impurities, such as a Y-type filter. Usually, the first material storage pipe valve 211, the first degumming pipe valve 213, the second material storage pipe valve 221, and the second glue hose valve 223 are all manual valves that are opened or closed by rotating the handle. The impurities in the degumming liquid that flows back to the storage box 1 from the degumming box assembly 3 are at least partially filtered by the filter device 214 and gradually accumulated, and need to be cleaned regularly. When it is necessary to clean or replace the filter device 214, the first material storage pipe valve 211, the first degumming pipe valve 213, the second material storage pipe valve 221, and the second hose valve 223 are all closed, and the filter device 214 can be removed for operation. After cleaning or replacing the filter device 214, the first material storage pipe valve 211, the first degumming pipe valve 213, the second material storage pipe valve 221, and the second hose valve 223 are all opened to restore the functions of the storage box 1, the liquid delivery structure 2, and the degumming box assembly 3. The above structure can remove impurities in the degumming liquid flowing back from the degumming box assembly 3 to the storage box 1, and is convenient for cleaning or replacing the filter device 214.

[0059] It is easy to understand that the liquid delivery pump 29, the air valve of the air inlet 38, the first reversing valve 231, and the second reversing valve 232 are usually electrically connected to electronic control devices such as PLC controllers and industrial computers (not shown in the drawings), and input devices such as buttons and touch screens electrically connected to the electronic control devices are usually also provided (not shown in the drawings) to achieve automatic control.

[0060] As one of the specific implementations, the battery pack degumming device of the first embodiment also includes a hoisting frame 4 with a hoisting connection part 41 on the top; the hoisting connection part 41 is usually a conventional structure such as a steel cable ring for connecting with a steel cable 42.

[0061] During the use of the battery pack degumming device of the first embodiment, it was found that after the hoisting frame 4 and the battery pack 49 on the hoisting frame 4 were hoisted into the degumming box 31, the degumming box cover 32 was also hoisted during the process of covering the degumming box 31 with the degumming box cover 32. After that, it was necessary to place the degumming box cover 32 on the degumming box 31 under the premise of ensuring that the degumming box cover 32 was aligned with the degumming box 31 (that is, the rectangular side wall of the degumming box cover 32 overlapped with the rectangular side wall of the degumming box 31 when viewed from above), and then fix the two by quick clamps, etc. The efficiency of covering the degumming box cover 32 on the degumming box 31 is low, and the hoisting and alignment operation of the degumming box cover 32 is high and inconvenient.

[0062] The second embodiment, as Figure 8-17 shown.

[0063] The battery pack degumming device of the second embodiment is different from that of the first embodiment in terms of the degumming box cover 32 and the quick lifting structure 5 .

[0064] The battery pack degumming device of the second embodiment also includes a steel cable 42 and a quick lifting structure 5. The quick lifting structure 5 includes a steel cable connector 52. The steel cable connector 52 is directly or indirectly arranged on the degumming box cover 32; for example, the steel cable connector 52 and the steel cable guide wheel 51 described later are directly fixed on the degumming box cover 32 (but the attached drawings of this embodiment are not drawn), so that the steel cable guide wheel 51 and the steel cable connector 52 are directly arranged on the degumming box cover 32; of course, the steel cable connector 52 can also be indirectly arranged on the degumming box cover 32 in the manner described later. The two ends of the steel cable 42 are respectively connected to the lifting connection part 41 and the steel cable connector 52; when the lifting frame 4 is placed in the degumming box 31, the steel cable 42 makes the degumming box cover 32 have a tendency to approach the degumming box 31. It is easy to understand that the weight of the hoisting frame 4 and the weight of the battery pack 49 thereon pull the degumming box cover 32 through the steel cable 42, so that the degumming box cover 32 has the gravity to move downward and has a tendency to approach the degumming box 31. Even if the degumming box cover 32 and the degumming box 31 are not fixed by a quick clamp, the sealing of the degumming box cover 32 and the degumming box 31 can be ensured. In addition, in the process of lifting the degumming box cover 32, the hoisting frame 4 and the battery pack 49 will also be lifted at the same time, without the need to lift the degumming box cover 32, the hoisting frame 4 and the battery pack 49 separately, which can improve the lifting efficiency.

[0065] As one of the specific implementations, Fig.14 As shown in the figure, line LINE1 represents the outline of the side wall of the degumming box 31. When viewed from above, the degumming box 31 is completely located in the degumming box cover 32. In other words, the rectangle of the degumming box 31 is completely located in the rectangle of the degumming box cover 32. Usually, a sealing gasket 321 is provided on the bottom end surface of the degumming box cover 32, and the degumming box 31 is completely located in the sealing gasket 321 when viewed from above; the sealing gasket 321 is made of conventional rubber or foam strips and other flexible materials to improve the sealing performance. The above structure can reduce the alignment accuracy requirements of the degumming box cover 32 and the degumming box 31, and is convenient for hoisting the degumming box cover 32.

[0066] As one of the specific implementations, the quick lifting structure 5 also includes a steel cable elastic member 53 and a steel cable guide wheel 51 directly or indirectly arranged on the degumming box cover 32. The steel cable 42 passes over the steel cable guide wheel 51, and the steel cable connector 52 is directly or indirectly connected to the degumming box cover 32 in a horizontal linear sliding manner; it is easy to understand that the direction of the linear sliding connection between the steel cable connector 52 and the degumming box cover 32 is parallel to the horizontal plane. For example, the linear guide rail 528 is directly fixed on the degumming box cover 32, and a linear slider 529 that cooperates with the linear guide rail 528 is fixed on the steel cable connector 52; so that the steel cable connector 52 is directly connected to the degumming box cover 32 in a horizontal sliding manner (but this embodiment is not shown in the attached figure); for another example, Fig.11As shown, the linear guide rail 528 is fixed on the lifting plate 55 described later, and the lifting plate 55 is vertically and linearly connected to the degumming box cover 32. A linear slider 529 that cooperates with the linear guide rail 528 is fixedly arranged on the steel cable connecting member 52, so that the steel cable connecting member 52 is indirectly and horizontally connected to the degumming box cover 32. Fig.14 As shown, the steel cable connector 52 is closer to the center point of the degumming box cover 32 than the steel cable guide wheel 51. One end of the steel cable elastic member 53 is directly or indirectly connected to the steel cable connector 52, so that the steel cable connector 52 has a tendency to move away from the steel cable guide wheel 51. It is easy to understand that the other end of the steel cable elastic member 53 can be connected to the degumming box cover 32 or the lifting plate 55, so that the steel cable elastic member 53 can provide elastic force. Fig.16 As shown, when the hoisting frame 4 is placed in the degumming box 31, the steel cable 42 between the steel cable guide wheel 51 and the hoisting connection part 41 is lower than the steel cable 42 between the steel cable connection part 52 and the steel cable guide wheel 51. Fig.15 As shown in the figure, the degumming box cover 32 is in a state of being lifted by the lifting device 9. When the lifting frame 4 and the battery pack 49 are lifted by the degumming box cover 32, the steel cable connector 52 overcomes the elastic force of the steel cable elastic member 53 and approaches the steel cable guide wheel 51 (until it reaches the limit position, such as limiting the limit position of the steel cable connector 52 by a limit block, or limiting the limit position of the steel cable connector 52 by a synchronization disk 54 described later), so that the length of the steel cable 42 between the steel cable guide wheel 51 and the lifting connection part 41 increases, and the inclination angle of the steel cable 42 between the steel cable guide wheel 51 and the lifting connection part 41 (the angle with the horizontal plane) also increases, which can ensure that the lifting frame 4 and the battery pack 49 are relatively stable when lifted by the degumming box cover 32. Refer to Fig.16As shown, the degumming box cover 32 in the figure is in the state of being placed in the degumming box 31; line three LINE3 represents the horizontal plane. After the hanging frame 4 and the battery pack 49 are placed in the degumming box 31 through the degumming box cover 32, the hanging frame 4 is supported by the box wall of the degumming box 31, and the gravity of the hanging frame 4 and the battery pack 49 borne by the steel cable 42 is reduced. The elastic force provided by the steel cable elastic member 53 makes the steel cable connector 52 move away from the steel cable guide wheel 51, so that the length of the steel cable 42 between the steel cable guide wheel 51 and the hanging connection part 41 is reduced, and the inclination angle of the steel cable 42 between the steel cable guide wheel 51 and the hanging connection part 41 (the angle with the horizontal plane) is also reduced; accordingly, the height between the hanging connection part 41 and the degumming box cover 32 is reduced, and on the premise of making full use of the volume of the degumming box 31, it can prevent the steel cable 42 from falling into the degumming liquid in the degumming box 31 due to automatic sagging. It is easy to understand that if a larger height is reserved at the top of the degumming box 31, the degumming liquid will not reach the reserved space of this part. Although the steel cable connector 52 does not slide horizontally and linearly, it can also prevent the steel cable 42 from falling into the degumming liquid in the degumming box 31 due to automatic sagging, but the volume of the degumming box 31 is mostly vacant and not fully utilized. In addition, when the hoisting frame 4 is placed in the degumming box 31, the steel cable 42 between the steel cable guide wheel 51 and the hoisting connection part 41 is lower than the steel cable 42 between the steel cable connector 52 and the steel cable guide wheel 51; so that the angle between the steel cable 42 between the steel cable connector 52 and the steel cable guide wheel 51 and the horizontal plane is necessarily small, therefore, the steel cable connector 52 is easier to slide horizontally and linearly under the action of the elastic force of the steel cable elastic member 53, thereby ensuring that the steel cable connector 52 slides horizontally and linearly smoothly, and the reliability is high.

[0067] As one of the specific implementations, the rapid lifting structure 5 also includes a synchronization disk 54 and a synchronization connecting rod 541. The synchronization disk 54 can rotate relative to the degumming box cover 32. For example, the synchronization disk 54 is directly hinged on the degumming box cover 32 and can rotate relative to the degumming box cover 32; for another example, the synchronization disk 54 is hinged to the lifting plate 55 described later, and the synchronization disk 54 can rotate relative to the degumming box cover 32 and can also move vertically relative to the degumming box cover 32; the two ends of the synchronization connecting rod 541 are respectively hinged to the synchronization disk 54 and the steel cable connector 52; for example, the two ends of the steel cable connector 52 are respectively the steel cable connecting end 521 and the opposite end 522, the synchronization connecting rod 541 is hinged to the opposite end 522, and the steel cable connecting end 521 is connected to the steel cable 42. Fig.14As shown, line 2 LINE2 in the figure represents a straight line for reference. When the degumming box cover 32 is hoisted, the synchronous connecting rod 541 passes through the rotation axis of the synchronous disk 54, and one end of the steel cable elastic member 53 is connected to the synchronous disk 54 to provide elastic force. For example, the steel cable elastic member 53 is a spring and one end is hinged to the rotating pull pin 542 on the synchronous disk 54. The rotation of the synchronous disk 54 can ensure that each steel cable connector 52 moves synchronously, ensures that the length of the steel cable 42 between each steel cable guide wheel 51 and the hoisting connection part 41 is equal, and the force exerted on the steel cable connector 52 is also equal, so as to ensure that the posture of the hoisting frame 4 is stable and will not tilt when the degumming box cover 32 is hoisted. In addition, when the degumming box cover 32 is hoisted, the synchronous connecting rod 541 passes through the rotation axis of the synchronous disk 54. At this time, the steel cable connector 52 cannot continue to approach the corresponding steel cable guide wheel 51 and is limited. There is no need to set a limit block, etc., which can ensure that the length of the steel cable 42 between each steel cable guide wheel 51 and the hoisting connection part 41 is equal, and can ensure that the posture of the hoisting frame 4 is stable when the degumming box cover 32 is hoisted. Fig.17 As shown, arrow three ARR3 indicates the rotation direction of the synchronous disk 54 when the degumming box cover 32 is placed on the degumming box 31; the dotted circular hole on the synchronous disk 54 indicates the imaginary position of the hinge axis at which one end of the synchronous connecting rod 541 is hinged to the synchronous disk 54 after the synchronous disk 54 is rotated and reset; line five LINE5 indicates a reference circle with the length of the synchronous connecting rod 541 as a radius and the same center as the dotted circular hole on the synchronous disk 54; the intersection of line five LINE5 and line two LINE2 is the first intersection, and line four LINE4 indicates the straight line segment between the first intersection and the same center as the dotted circular hole on the synchronous disk 54. When the degumming box cover 32 is placed on the degumming box 31, the synchronous disk 54 rotates to reset, and one end of the synchronous connecting rod 541 rotates to reset the rotation angle 543 along with the synchronous disk 54, and the other end of the synchronous connecting rod 541 approaches the synchronous disk 54, so that the steel cable connector 52 moves the retracted distance 523 (it is easy to understand that the required retracted distance 523 can be obtained by setting different radii of the synchronous disk 54 and different lengths of the synchronous connecting rod 541). For multiple synchronous connecting rods 541, in the above process, each synchronous connecting rod 541 rotates the same reset rotation angle 543, the length of each synchronous connecting rod 541 (the length of line four LINE4) is equal, and the distance from the axis line of the synchronous disk 54 to the axis line of the synchronous disk 54 from one end of each synchronous connecting rod 541 is equal, so that the retracted distance 523 moved by each steel cable connector 52 is equal ( Fig.17 A triangle filled with slashes is shown in the figure, and it is easy to understand that each synchronous connecting rod 541 corresponds to this triangle, and the triangles of each synchronous connecting rod 541 are the same), so as to ensure that the lengths of the steel cables 42 between each steel cable guide wheel 51 and the lifting connection part 41 are equal at this time, thereby ensuring that the posture of the lifting frame 4 is stable when the degumming box cover 32 is placed on the degumming box 31.

[0068] As one of the specific implementations, the quick lifting structure 5 also includes a sealing elastic member 56 and a lifting plate 55 vertically connected to the degumming box cover 32 in a linear sliding manner. The sealing elastic member 56 is respectively connected to the lifting plate 55 and the degumming box cover 32 so that the lifting plate 55 has a tendency to move upward relative to the degumming box cover 32; the steel cable guide wheel 51 is arranged on the degumming box cover 32 (the steel cable guide wheel 51 is arranged on the degumming box cover 32 in the embodiment not shown in the attached figure), and the steel cable connecting member 52 is horizontally connected to the lifting plate 55 in a linear sliding manner, so that the steel cable connecting member 52 is indirectly connected to the degumming box cover 32 in a linear sliding manner. The synchronous disk 54 is hinged to the lifting plate 55, for example, by a bearing 549; the synchronous disk 54 is provided with an upper extension body 545, the upper extension body 545 is provided with a spiral groove 546, and the degumming box cover 32 is provided with a spiral groove pin 324 inserted into the spiral groove 546. Typically, the spiral groove 546 and the spiral groove pin 324 are located above the degumming box cover 32 to save space. Fig.15 As shown, the degumming box cover 32 is in a state of being lifted by the lifting device 9. At this time, the lifting plate 55 overcomes the elastic force of the sealing elastic member 56 under the action of the gravity of the lifting frame 4 and the battery pack 49 and moves downward relative to the degumming box cover 32. The spiral groove pin 324 abuts against the inner wall of the spiral groove 546 to rotate the upper extension body 545 and the synchronous disk 54 until the synchronous connecting rod 541 passes through the rotation axis of the synchronous disk 54 when viewed from above (as shown in FIG. Fig.14 As shown in Fig.16 As shown, the degumming box cover 32 is placed on the degumming box 31. At this time, the elastic force provided by the sealing elastic member 56 makes the lifting plate 55 have a tendency to move upward relative to the degumming box cover 32. The spiral groove pin 324 abuts against the inner wall of the spiral groove 546 to rotate and reset the upper extension body 545 and the synchronous disk 54, and the steel cable 42 between the hanging connection part 41 and the steel cable guide wheel 51 is shortened. The above structure can make each steel cable connecting member 52 move linearly synchronously to ensure reliability. The elastic force provided by the sealing elastic member 56 allows the lifting plate 55 to float slightly, thereby adjusting the distance from the steel cable guide wheel 51 to the hanging frame 4. The elastic force provided by the sealing elastic member 56 also allows the steel cable connecting member 52 to move slightly back and forth linearly to adjust the length of the steel cable 42 between the hanging connection part 41 and the steel cable guide wheel 51. Therefore, even if the height deviation of the hanging frame 4 is generated due to processing and stacking, it can automatically adapt to the height deviation of the hanging frame 4 and ensure the sealing between the degumming box cover 32 and the degumming box 31.

[0069] As one of the specific implementations, the quick lifting structure 5 also includes a supported plate 552, a limiting bolt 553 and a height adjustment nut 554; the lifting plate 55 is provided with a lifting guide rod 551, the lifting guide rod 551 is vertically and linearly connected to the degumming box cover 32, the lifting guide rod 551 penetrates to the top of the degumming box cover 32 and is vertically and linearly connected to the supported plate 552, so that the lifting plate 55 is vertically and linearly connected to the degumming box cover 32, the height adjustment nut 554 is threadedly connected to the lifting guide rod 551 and abuts the supported plate 552, the sealing elastic member 56 is a spring and is sleeved on the lifting guide rod 551, and the two ends of the sealing elastic member 56 respectively abut the supported plate 552 and the degumming box cover 32, so that the lifting plate 55 has a tendency to move upward relative to the degumming box cover 32. The limiting bolt 553 is threadedly connected to the supported plate 552 and can abut the degumming box cover 32. The above structure can adjust the elastic force of the sealing elastic member 56 and the limit position of the lifting plate 55 relative to the degumming box cover 32 as needed. Usually, the limit bolt 553 and the height adjustment nut 554 can cooperate with the locking nut (not shown in the drawings) to ensure the stability of the adjusted state.

[0070] The terms first, second, etc. used in the present invention do not indicate any order, quantity or importance, but are only used for distinction.

[0071] As used herein, the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced object.

[0072] Terms indicating orientation or position as used in the present invention, such as top, bottom, side, longitudinal, lateral, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are intended to reflect relative positions rather than absolute positions.

[0073] As used in the present invention, the terms: generally, overall, approximately, close, etc., are limiting terms to indicate that a feature exists but a certain deviation is allowed. The amount of the certain deviation allowed may vary depending on the specific context; for example, the specific context that may depend on the deviation of a dimension includes but is not limited to the relevant standards of the dimension tolerance.

Claims

1. A battery pack degumming device, comprising a liquid conveying structure (2), a degumming box assembly (3), and a storage box (1) for containing degumming liquid; the degumming box assembly (3) comprises a degumming box (31) and a degumming box cover (32) covering the top opening of the degumming box (31); the degumming box cover (32) is movably connected to the degumming box (31), Its characteristics are: The liquid delivery structure (2) comprises a first delivery pipe (21), a second delivery pipe (22), an intermediate delivery pipe (23), and a liquid delivery pump (29) arranged on the intermediate delivery pipe (23); the two ends of the first delivery pipe (21) are respectively connected to the material storage box (1) and the degumming box assembly (3); the two ends of the second delivery pipe (22) are respectively connected to the material storage box (1) and the degumming box assembly (3); the two ends of the intermediate delivery pipe (23) are provided with a first reversing valve (231) and a second reversing valve (232). 32), a first reversing valve (231) and a second reversing valve (232) are respectively arranged on the first conveying pipe (21) and the second conveying pipe (22); further comprising a steel cable (42), a quick lifting structure (5) and a lifting frame (4) with a lifting connection portion (41) arranged at the top; the quick lifting structure (5) comprises a steel cable connecting piece (52), and the steel cable connecting piece (52) is directly or indirectly arranged on the degumming box cover (32); both ends of the steel cable (42) are respectively connected to the lifting connection portion (41) and the steel cable connecting piece When the lifting frame (4) is placed in the degumming box (31), the steel cable (42) makes the degumming box cover (32) have a tendency to approach the degumming box (31); the quick lifting structure (5) also includes a steel cable elastic member (53) and a steel cable guide wheel (51) directly or indirectly arranged on the degumming box cover (32), the steel cable (42) passes around the steel cable guide wheel (51), and the steel cable connecting member (52) is directly or indirectly connected to the degumming box cover (32) in a horizontal straight line sliding manner; the steel cable connecting member ( 52) is closer to the center point of the degumming box cover (32) relative to the steel cable guide wheel (51), and one end of the steel cable elastic member (53) is directly or indirectly connected to the steel cable connecting member (52), so that the steel cable connecting member (52) has a tendency to move away from the steel cable guide wheel (51). When the lifting frame (4) is placed in the degumming box (31), the steel cable (42) between the steel cable guide wheel (51) and the lifting connection part (41) is lower than the steel cable (42) between the steel cable connecting member (52) and the steel cable guide wheel (51).

2. The battery pack degumming device according to claim 1 is characterized in that: The volume of the material storage box (1) is greater than the volume of the degumming box assembly (3); the liquid delivery structure (2) further comprises an overflow pipe (28); both ends of the overflow pipe (28) are respectively connected to the material storage box (1) and the degumming box assembly (3), and are located above the higher one of the first delivery pipe (21) and the second delivery pipe (22); and / or, one of the material storage box (1) and the degumming box assembly (3) is provided with a liquid level detection device (8).

3. The battery pack degumming device according to claim 1, characterized in that: The degumming box (31) is provided with an air inlet (38) and an air outlet (39); the air inlet (38) is provided with an air valve, and the air outlet (39) is used to communicate with an air purification device.

4. The battery pack degumming device according to claim 2, characterized in that: The liquid delivery structure (2) further comprises a filtering device (214); a first material storage pipe valve (211) and a first degumming pipe valve (213) which are manual valves are respectively arranged at both ends of the first delivery pipe (21); a second material storage pipe valve (221) and a second glue pipe valve (223) which are manual valves are respectively arranged at both ends of the second delivery pipe (22); and the filtering device (214) is arranged between the first degumming pipe valve (213) and the first reversing valve (231).

5. The battery pack degumming device according to claim 1, characterized in that: The quick lifting structure (5) also includes a synchronous disk (54) and a synchronous connecting rod (541), wherein the synchronous disk (54) can rotate relative to the degumming box cover (32); the two ends of the synchronous connecting rod (541) are respectively hinged to the synchronous disk (54) and the steel cable connecting member (52); when the degumming box cover (32) is lifted, the synchronous connecting rod (541) passes through the rotation axis of the synchronous disk (54), and one end of the steel cable elastic member (53) is connected to the synchronous disk (54) to provide elastic force.

6. The battery pack degumming device according to claim 5, characterized in that: The quick lifting structure (5) also includes a sealing elastic member (56) and a lifting plate (55) vertically connected to the degumming box cover (32) in a linear sliding manner. The sealing elastic member (56) is respectively connected to the lifting plate (55) and the degumming box cover (32) so that the lifting plate (55) has a tendency to move upward relative to the degumming box cover (32); the steel cable guide wheel (51) is arranged on the degumming box cover (32), the steel cable connecting member (52) is horizontally connected to the lifting plate (55) in a linear sliding manner, and the synchronous disk (54) is hinged to the lifting plate (55); the synchronous disk (54) is provided with an upper extension body (545), the upper extension body (545) is provided with a spiral groove (546), and the degumming box cover (32) is provided with a spiral groove pin (324) inserted into the spiral groove (546).

7. The battery pack degumming device according to claim 6, characterized in that: The quick lifting structure (5) also includes a supported plate (552), a limiting bolt (553) and a height adjustment nut (554); the lifting plate (55) is provided with a lifting guide rod (551), the lifting guide rod (551) is vertically and linearly connected to the degumming box cover (32), the lifting guide rod (551) penetrates to the top of the degumming box cover (32) and is vertically and linearly connected to the supported plate (552), the height adjustment nut (554) is threadedly connected to the lifting guide rod (551) and supports the supported plate (552), the sealing elastic member (56) is a spring and is sleeved on the lifting guide rod (551), the two ends of the sealing elastic member (56) respectively support the supported plate (552) and the degumming box cover (32), the limiting bolt (553) is threadedly connected to the supported plate (552) and can support the degumming box cover (32).

8. A method for degumming a battery pack, characterized in that: Using the battery pack degumming device according to any one of claims 1 to 7, it comprises the following steps: Place all battery packs (49) into the degumming box (31) from the top opening of the degumming box (31); Starting the liquid delivery pump (29) to deliver the degumming liquid from the storage box (1) to the degumming box assembly (3) until the degumming liquid soaks all the battery packs (49) and is left to stand; Starting the liquid delivery pump (29) to deliver the degumming liquid from the degumming box assembly (3) to the storage box (1) until all the battery packs (49) are exposed from the degumming liquid; All battery packs (49) are lifted out from the top opening of the degumming box (31).

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