Waste pole piece recovery device

Abstract

The utility model discloses a waste pole piece recovery device which comprises an unwinding roller, a wiping box, a cleaning box, a drying box and a winding roller which are sequentially built, a pole piece is led out by the unwinding roller and sequentially passes through the wiping box, the cleaning box and the drying box, and at least two wiping rollers are carried in the wiping box and used for wiping the two sides of the pole piece respectively; a cleaning roller group settled in a cleaning solvent is carried in the cleaning box, so that the pole piece on the cleaning roller group is cleaned in the cleaning solvent; a drying roller set used for drying the pole piece is carried in the drying box, and the pole piece passes through the drying roller set and then is led out to the wind-up roller. According to the utility model, coating and metal separation is carried out on waste pole pieces or coated copper-aluminum foils, so that the copper-aluminum foils are recycled, and the recycling rate of the foils is improved; high-temperature pyrolysis is not needed, and the working comfort is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrode recovery, and in particular relates to a waste electrode recovery device. Background Art

[0002] As lithium batteries are used in more and more applications, more and more waste batteries are generated. Therefore, unified recycling and treatment of waste batteries is urgent. Battery electrode recycling refers to the collection of used batteries and electrodes from the lithium-ion battery manufacturing process to prevent them from being discarded or buried or incinerated. The black powder from the electrodes of waste lithium-ion batteries contains large amounts of metals such as nickel, cobalt, lithium, manganese, and iron. If discarded carelessly, it will not only cause serious waste of resources but also pose a huge threat to our living environment. Therefore, recycling is necessary.

[0003] Currently, the most common recycling method involves calcining lithium-ion battery materials at high temperatures to decompose and remove organic binders, thereby separating the components of the lithium-ion battery. However, existing equipment for pyrolysis of batteries can cause the materials to harden due to the high temperatures, affecting subsequent separation and recovery. Furthermore, the waste gas generated during pyrolysis pollutes the environment, and the high temperature of the furnace increases the working environment, reducing working comfort. Therefore, improvements are necessary. Utility Model Content

[0004] The purpose of the utility model is to provide a waste electrode recycling device, which can separate the coating and metal of waste electrodes or coated copper and aluminum foils, realize the recycling of copper and aluminum foils, and improve the recycling rate of foils; no high-temperature pyrolysis is required, which effectively improves working comfort.

[0005] The technical solution adopted by the utility model to solve its technical problems is to propose a waste electrode recycling device, including a winding roller, a wiping box, a cleaning box, a drying box and a winding roller built in sequence. The electrode is led out from the winding roller and passes through the wiping box, the cleaning box and the drying box in sequence. The wiping box is equipped with at least two wiping rollers, which are respectively used to wipe the two sides of the electrode; the cleaning box is equipped with a cleaning roller group that is submerged in the cleaning solvent, so that the electrode on the cleaning roller group is cleaned in the cleaning solvent; the drying box is equipped with a drying roller group for drying the electrode, and the electrode is led out to the winding roller after passing through the drying roller group.

[0006] Furthermore, the wiping box includes a wiping introduction roller, two wiping rollers, and a wiping lead-out roller. The wiping introduction roller is located above the wiping box, one of the wiping rollers is located above the right side wall of the wiping box, the other wiping roller is located below the left side wall of the wiping box, and the wiping lead-out roller is located at the lower right corner of the wiping box.

[0007] Furthermore, the pole piece passes through the wiping introduction roller, the wiping roller on the right side wall, the wiping roller on the left side wall and the wiping lead-out roller in sequence in the wiping box.

[0008] Furthermore, a plurality of wiping boxes are provided between the unwinding roller and the cleaning box; a plurality of cleaning boxes are provided between the wiping box and the drying box; and a plurality of drying boxes are provided between the cleaning box and the winding roller.

[0009] Furthermore, the cleaning box also includes a container for containing cleaning solvent and an ultrasonic cleaning device. The ultrasonic cleaning device is arranged outside the container, and the roller body structure of the cleaning roller group is partially or completely sunk below the liquid level of the cleaning solvent in the container, so that the electrode passing through the cleaning roller group is completely immersed in the cleaning solvent.

[0010] Furthermore, the cleaning box also includes a cleaning introduction roller and a drying roller, the cleaning introduction roller is located upstream of the cleaning roller group, the drying roller is located downstream of the cleaning roller group, and the cleaning introduction roller and the drying roller are both located outside the container.

[0011] Furthermore, the wiping box includes a wiping introduction roller, two wiping rollers, and a wiping lead-out roller. The wiping introduction roller is arranged above the wiping box, one of the wiping rollers is arranged above the left side wall of the wiping box and below the wiping introduction roller; the other wiping roller is arranged below the right side wall of the wiping box, the wiping lead-out roller is located below the wiping roller on the right side wall, and the wiping lead-out roller is located between the two wiping rollers.

[0012] Furthermore, a receiving assembly is included, which is arranged below the wiping roller and is used to receive the coating and other debris dropped by the wiping roller when wiping the electrode, such as dust, residual glue, etc.

[0013] Furthermore, the wiping roller includes a wiping roller body, positioning rollers arranged on both sides of the wiping roller body, an elastic transmission belt sleeved on the wiping roller body and the two positioning rollers, and a telescopic structure supporting the wiping roller body, wherein one of the positioning rollers is connected to the driving structure, and the wiping roller body is driven to rotate by the transmission belt; the telescopic structure is arranged on the rear side of the wiping roller body, and a follower roller is arranged on the front side of the wiping roller body, and when the telescopic structure is extended and retracted, the wiping roller body is pressed against the follower roller or the wiping roller body is released from the follower roller.

[0014] Furthermore, the plurality of wiping boxes are arranged in sequence, and two adjacent wiping boxes are symmetrically arranged.

[0015] The beneficial effects of the utility model are:

[0016] The utility model proposes a waste electrode recycling device that can recycle copper and aluminum foil by separating the coating from the metal in waste electrodes or coated copper and aluminum foil, thereby improving the foil recycling rate. The metal in the washed coating powder can be recycled and reused, avoiding resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0018] Figure 1 This is a layout diagram of a waste electrode recovery device according to an embodiment of the present utility model;

[0019] Figure 2 Another structural diagram of the wipe box.

[0020] In the figure: 1. Unwinding roller; 11. Unwinding support roller; 2. Wiping box; 21. Wiping introduction roller; 22. Wiping roller; 23. Follower roller; 24. Wiping lead-out roller; 3. Cleaning box; 31. Cleaning introduction roller; 32. Cleaning roller group; 33. Drying roller; 4. Drying box; 41. Drying introduction roller; 42. Drying roller group; 43. Drying lead-out roller; 5. Winding roller; 51. Winding support roller; 6. Receiving component. DETAILED DESCRIPTION

[0021] To more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following describes specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the drawings described below are merely examples of the present invention. A person skilled in the art can, without inventive effort, derive other drawings and other embodiments from these drawings. Furthermore, design orientations only represent relative positional relationships between components, not absolute positional relationships.

[0022] The present invention provides a waste electrode recycling device. Figure 1 、 Figure 2It mainly includes an unwinding roller 1, a wiping box 2, a cleaning box 3, a drying box 4 and a winding roller 5 which are built in sequence. The electrode is led out from the unwinding roller 1 and passes through the wiping box 2, the cleaning box 3 and the drying box 4 in sequence. The wiping box 2 is equipped with at least two wiping rollers 22, which are used to wipe both sides of the electrode respectively; the cleaning box 3 is equipped with a cleaning roller group 32 which is submerged in the cleaning solvent, so that the electrode on the cleaning roller group 32 is cleaned in the cleaning solvent; the drying box 4 is equipped with a drying roller group 42 for drying the electrode, and the electrode is led out to the winding roller 5 after passing through the drying roller group 42.

[0023] In this application, the support structure or bearing structure of the unwinding roller 1, wiping box 2, cleaning box 3, drying box 4 and winding roller 5 can be built in sequence; when each box is placed on the ground, it is only necessary to build the support structure of the unwinding roller 1 and the winding roller 5 to reach a certain height to facilitate the retraction and unloading of the electrode.

[0024] For example, an additional unwinding support roller 11 may be provided between the unwinding roller 1 and the wiping box 2, and an additional winding support roller 51 may be provided between the winding roller 5 and the drying box 4 to adjust the direction of the electrode lead-in and lead-out.

[0025] In this application, the coating separation on the electrode is implemented through the wiping box 2 and the cleaning box 3. The coating is first removed by physical means through the wiping box 2 and then cleaned through the cleaning box 3 to ensure that the electrode is clean and tidy.

[0026] After the cleaning is completed in the cleaning box 3, the electrode is dried in the drying box 4 to avoid residual moisture on the electrode, which may cause pollution, rust and other problems.

[0027] In consideration of wiping cleanliness, cleaning cleanliness and drying degree, multiple wiping boxes 2, multiple cleaning boxes 3 and multiple drying boxes 4 can be provided. In specific implementation, multiple wiping boxes 2 can be provided between the unwinding roller 1 and the cleaning box 3; multiple cleaning boxes 3 can be provided between the wiping box 2 and the drying box 4; multiple drying boxes 4 can be provided between the cleaning box 3 and the winding roller 5.

[0028] In the embodiment of the present application, a plurality of wiping rollers 22 are mounted in the wiping box 2 to wipe both sides of the electrode respectively. Two wiping rollers 22 are used as an example for illustration in the present application. In specific implementation, the number of wiping rollers 22 can be adjusted according to the wiping effect of each side.

[0029] In a specific embodiment, the wiping box 2 includes a wiping introduction roller 21, two wiping rollers 22, and a wiping lead-out roller 24. The wiping introduction roller 21 is located above the wiping box 2, one of the wiping rollers 22 is located above the right side wall of the wiping box 2, and the other wiping roller 22 is located below the left side wall of the wiping box 2. The wiping lead-out roller 24 is located at the lower right corner of the wiping box 2.

[0030] At this time, the electrode can pass through the wiping introduction roller 21, the wiping roller 22 on the right wall, the wiping roller 22 on the left wall and the wiping lead-out roller 24 in the wiping box 2 in sequence. Figure 1 As shown in .

[0031] In another feasible embodiment, the wiping box 2 includes a wiping introduction roller 21, two wiping rollers 22, and a wiping lead-out roller 24. The wiping introduction roller 21 is arranged above the wiping box 2, one of the wiping rollers 22 is arranged above the left side wall of the wiping box 2, and is located below the wiping introduction roller 21; the other wiping roller 22 is arranged below the right side wall of the wiping box 2, the wiping lead-out roller 24 is located below the wiping roller 22 on the right side wall, and the wiping lead-out roller 24 is located between the two wiping rollers 22.

[0032] At this time, the electrode can pass through the wiping introduction roller 21, the wiping roller 22 on the left wall, the wiping roller 22 on the right wall and the wiping lead-out roller 24 in the wiping box 2 in sequence. Figure 2 As shown in .

[0033] Both of the above-mentioned two types of box layouts of wiping rollers 22 have the possibility of secondary contamination. The coating and other debris that fall off when wiping the upper layer may fall back onto the wiped electrode in the lower layer, affecting the effect of a single wiping. Adding multiple wiping boxes 2 will only increase costs, but cannot solve the problem of wiping and falling.

[0034] Therefore, in this application, a receiving component 6 can be placed under the wiping roller 22 to receive the coating and other debris dropped by the wiping roller 22 when wiping the electrode, wherein the other debris includes residual glue, dust, metal debris, etc.

[0035] In a feasible embodiment, the receiving component 6 may be an active type, such as a negative pressure pipe, with the negative pressure port corresponding to the abutment point between the wiping roller 22 and the follower roller 23 .

[0036] In another feasible embodiment, the receiving assembly 6 can be a passive device, such as a collection plate, suspended at the junction of the wiping roller 22 and the follower roller 23. The plate receives the dropped objects in the direction of their release, depending on the rotation of the wiping roller 22. A buffer (such as a low-volatility liquid or a porous sponge) can also be placed within the plate to prevent dropped objects from being ejected.

[0037] When there are multiple wiping boxes 2, due to the layout of the wiping rollers 22 inside them, the multiple wiping boxes 2 can be arranged in sequence, but the internal structures of two adjacent wiping boxes 2 should be arranged symmetrically, such as Figure 1 As shown in .

[0038] Specifically, just replace the entrance and exit of the wiping box 2, so that Figure 1For example, the wiping lead-out roller 24 of the rear wiping box 2 is used as the lead-in roller of the pole piece, and the wiping lead-in roller is used as the lead-out roller of the pole piece. The wiping rollers 22 inside it can operate normally, and the corresponding receiving components can also operate normally.

[0039] In an embodiment of the present application, the wiping roller 22 can be elastically arranged. The wiping roller 22 includes a wiping roller body, positioning rollers arranged on both sides of the wiping roller body, an elastic transmission belt sleeved on the wiping roller body and the two positioning rollers, and a telescopic structure supporting the wiping roller body, wherein one of the positioning rollers is connected to the driving structure for transmission, and the wiping roller body is driven to rotate by the transmission belt; the telescopic structure is arranged on the rear side of the wiping roller body, and a follower roller 23 is arranged on the front side of the wiping roller body. When the telescopic structure is extended or retracted, the wiping roller body is pressed against the follower roller 23 or the wiping roller body is released from the follower roller 23.

[0040] By adjusting the stroke of the telescopic structure, the cleaning force of the wiping roller on the electrode piece is adjusted, thereby wiping off the coating without damaging the metal structure of the electrode piece itself or minimizing the damage. The surface of the wiping roller body can be provided with a wiping structure to wipe the coating on the rolled flat electrode piece, wiping off the coating from the electrode piece surface and retaining the metal structure of the electrode piece itself.

[0041] In an embodiment of the present application, the cleaning box 3 also includes a container for containing a cleaning solvent and an ultrasonic cleaning device. The ultrasonic cleaning device is arranged outside the container, and the roller body structure of the cleaning roller group 32 is partially or completely sunk below the liquid surface of the cleaning solvent in the container, so that the electrode passing through the cleaning roller group 32 is completely immersed in the cleaning solvent.

[0042] Illustratively, the cleaning tank 3 also includes a cleaning introduction roller 31 and a drying roller 33. The cleaning introduction roller 31 is located upstream of the cleaning roller assembly 32, while the drying roller 33 is located downstream of the cleaning roller assembly 32. Both the cleaning introduction roller 31 and the drying roller 33 are located outside the container. The cleaning solvent can be N-methyl-2-pyrrolidone (NMP), a colorless, transparent, oily liquid. The drying roller 33 is used to wipe away any solvent contamination on the electrode, facilitating subsequent rapid drying.

[0043] In the embodiment of the present application, a heating device for drying the electrode sheets can be installed in the drying box 4. The heating device dries the electrode sheets on the drying roller group 42. At the same time, a drying lead-in roller 41 can be installed upstream of the drying roller group 42 and a drying lead-out roller 42 can be installed downstream. The drying lead-out roller 42 can be flush with the winding support roller 51. Similarly, the unwinding support roller 11 can be flush with the wiping lead-in roller 21. The lead-out rollers and the lead-in rollers of different boxes can also be flush. The lead-out roller of the cleaning box 3 can be replaced by the drying roller 33, performing the same function.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0045] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific embodiments of the present invention are not limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A waste electrode recycling device, characterized in that: The invention comprises an unwinding roller (1), a wiping box (2), a cleaning box (3), a drying box (4) and a winding roller (5) which are built in sequence. The electrode is led out from the unwinding roller (1) and passes through the wiping box (2), the cleaning box (3) and the drying box (4) in sequence. The wiping box (2) is equipped with at least two wiping rollers (22) for wiping both sides of the electrode respectively; the cleaning box (3) is equipped with a cleaning roller group (32) which is submerged in a cleaning solvent so that the electrode on the cleaning roller group (32) is cleaned in the cleaning solvent; the drying box (4) is equipped with a drying roller group (42) for drying the electrode, and the electrode is led out to the winding roller (5) after passing through the drying roller group (42).

2. The waste electrode recycling device according to claim 1, characterized in that: The wiping box (2) includes a wiping introduction roller (21), two wiping rollers (22), and a wiping lead-out roller (24). The wiping introduction roller (21) is located above the wiping box (2), one of the wiping rollers (22) is located above the right side wall of the wiping box (2), the other wiping roller (22) is located below the left side wall of the wiping box (2), and the wiping lead-out roller (24) is located at the lower right corner of the wiping box (2).

3. The waste electrode recycling device according to claim 2, characterized in that: The pole piece passes through the wiping introduction roller (21), the wiping roller (22) on the right side wall, the wiping roller (22) on the left side wall, and the wiping lead-out roller (24) in sequence in the wiping box (2).

4. The waste electrode recycling device according to claim 1, characterized in that: A plurality of wiping boxes (2) are provided between the unwinding roller (1) and the cleaning box (3); a plurality of cleaning boxes (3) are provided between the wiping box (2) and the drying box (4); and a plurality of drying boxes (4) are provided between the cleaning box (3) and the winding roller (5).

5. The waste electrode recycling device according to claim 1, characterized in that: The cleaning box (3) also includes a container for containing a cleaning solvent and an ultrasonic cleaning device. The ultrasonic cleaning device is arranged outside the container. The roller structure of the cleaning roller group (32) is partially or completely sunk below the liquid level of the cleaning solvent in the container, so that the electrode passing through the cleaning roller group (32) is completely immersed in the cleaning solvent.

6. The waste electrode recycling device according to claim 5, characterized in that: The cleaning box (3) further comprises a cleaning introduction roller (31) and a drying roller (33), wherein the cleaning introduction roller (31) is located upstream of the cleaning roller group (32), and the drying roller (33) is located downstream of the cleaning roller group (32), and both the cleaning introduction roller (31) and the drying roller (33) are located outside the container.

7. The waste electrode recycling device according to claim 1, characterized in that: The wiping box (2) includes a wiping introduction roller (21), two wiping rollers (22), and a wiping lead-out roller (24). The wiping introduction roller (21) is arranged above the wiping box (2), one of the wiping rollers (22) is arranged above the left side wall of the wiping box (2) and below the wiping introduction roller (21); the other wiping roller (22) is arranged below the right side wall of the wiping box (2), the wiping lead-out roller (24) is located below the wiping roller (22) on the right side wall, and the wiping lead-out roller (24) is located between the two wiping rollers (22).

8. The waste electrode recycling device according to claim 7, characterized in that: It also includes a receiving assembly (6), which is arranged below the wiping roller (22) and is used to receive the coating and other debris dropped by the wiping roller (22) when wiping the pole piece.

9. The waste electrode recycling device according to claim 1, characterized in that: The wiping roller (22) comprises a wiping roller body, positioning rollers arranged on both sides of the wiping roller body, an elastic transmission belt sleeved on the wiping roller body and the two positioning rollers, and a telescopic structure supporting the wiping roller body, wherein one of the positioning rollers is connected to the driving structure in a transmission manner, and the wiping roller body is driven to rotate by the transmission belt; The telescopic structure is arranged on the rear side of the wiping roller body, and a follower roller (23) is arranged on the front side of the wiping roller body. When the telescopic structure is extended or retracted, the wiping roller body is pressed against the follower roller (23) or the wiping roller body is released from the follower roller (23).

10. The waste electrode recycling device according to claim 4, characterized in that: The plurality of wiping boxes (2) are arranged in sequence, and two adjacent wiping boxes (2) are symmetrically arranged.

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