Waste pole piece glue removing device

Abstract

The utility model provides a waste pole piece glue removing device. The waste pole piece glue removing device comprises a box body and an unfolding mechanism, a heating piece is arranged in an inner cavity of the box body; the unfolding mechanism is arranged in an inner cavity of the box body; the unfolding mechanism comprises a vortex-shaped guide rail, an unwinding assembly and a plurality of clamping and conveying assemblies. The unwinding assembly is arranged at an inlet of the vortex-shaped guide rail, and the multiple clamping and conveying assemblies are all arranged in the vortex-shaped guide rail and distributed in the winding direction of the vortex-shaped guide rail at intervals. The unwinding assembly comprises an unwinding support and an unwinding drum, and the unwinding drum is rotationally arranged on the unwinding support. The clamping and conveying assembly comprises a first clamping and conveying wheel and a second clamping and conveying wheel; the first clamping and conveying wheel and the second clamping and conveying wheel are oppositely arranged, the first clamping and conveying wheel and the second clamping and conveying wheel rotate reversely, a crack is formed between the first clamping and conveying wheel and the second clamping and conveying wheel, and a pole piece of a to-be-degummed pole piece roll penetrates through the crack to unfold the to-be-degummed pole piece roll in the vortex-shaped guide rail; and the heating piece fully thermally melts the adhesive on the pole piece of the unfolded pole piece roll to be degummed, so that the adhesive can be quickly and efficiently removed.

Description

Technical Field

[0001] The present invention relates to the technical field of battery material recycling, and in particular to a device for removing glue from waste pole pieces. Background Art

[0002] As the demand for new energy vehicles continues to increase, the output of rechargeable power batteries is also growing year by year. However, due to technical problems such as uneven coating, broken belts, and bubbles in the production process of battery electrodes, about 5% of positive electrodes are discarded. Positive electrodes contain metal resources such as lithium, cobalt, nickel, manganese, and aluminum. If they are directly discarded in the external environment, it will not only waste metal resources, but also cause serious pollution to the environment. In response to the above problems, some manufacturers have made further research and development.

[0003] For example, Chinese patent document CN116666800A discloses a lithium-ion battery positive electrode material recovery device, which obtains a solid mixture by placing a positive electrode sheet containing lithium iron phosphate in an organic solvent, heating it at 180°C to 220°C to dissolve a binder in the organic solvent; crushing the solid mixture by ultrasonic wave in the heated state to obtain lithium iron phosphate powder and aluminum foil blocks; and separating the lithium iron phosphate powder from the aluminum foil blocks by sieving with a sieving machine.

[0004] However, the design of the above-mentioned lithium-ion battery positive electrode material recovery device has the following problems:

[0005] Although the above-mentioned lithium-ion battery positive electrode material recovery device can dissolve the binder on the positive electrode sheet through an organic solvent at an environment of 180°C to 220°C, due to the compact structure of the positive electrode sheet in the battery cell, in order to allow the positive electrode sheet to fully contact with the organic solvent, the positive electrode sheet usually needs to be crushed before being immersed in the organic solvent. The crushing process is complicated, which greatly increases the recovery cost of the positive electrode sheet. Utility Model Content

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a waste electrode glue removal device that does not break the electrode and maintains the integrity of the electrode.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A waste electrode debonding device, comprising:

[0009] A box body, wherein the inner cavity of the box body is provided with a heating element, and the heating element is used to heat the inner cavity of the box body;

[0010] An unfolding mechanism, the unfolding mechanism is arranged in the inner cavity of the box; the unfolding mechanism includes a spiral guide rail, an unwinding assembly and a plurality of pinching and feeding assemblies; the unwinding assembly is arranged at the entrance of the spiral guide rail; a plurality of the pinching and feeding assemblies are arranged in the spiral guide rail and are spaced apart along the winding direction of the spiral guide rail;

[0011] The unwinding assembly comprises an unwinding support and an unwinding drum, wherein the unwinding drum is rotatably arranged on the unwinding support, and the unwinding drum is used to install the electrode roll to be debonded;

[0012] The clamping assembly includes a first clamping wheel and a second clamping wheel; the first clamping wheel and the second clamping wheel are arranged opposite to each other, and the first clamping wheel and the second clamping wheel rotate in opposite directions, and a gap is formed between the first clamping wheel and the second clamping wheel, and the gap is used to pass the pole piece of the pole piece roll to be debonded.

[0013] In one of the embodiments, the waste electrode glue removal device further includes a winding component;

[0014] The winding assembly is arranged at the outlet of the spiral guide rail, and the winding assembly includes a winding support and a winding drum. The winding drum is rotatably arranged on the winding support, and the winding drum is used to wind up the electrode sheet from which the glue has been removed.

[0015] In one embodiment, the vertical cross-section of the vortex guide rail is a U-shaped cross-section, and an air gap is provided on the U-shaped cross-section; the air gap extends along the winding direction of the vortex guide rail and forms a vortex air port; the vortex pitch of the vortex guide rail is greater than the width of the U-shaped cross-section, so that a ventilation gap is formed between two adjacent circles of the guide rail walls of the vortex guide rail; the vortex air port is connected to the inner cavity of the box body through the ventilation gap.

[0016] In one of the embodiments, a plurality of guide assemblies are further arranged in the vortex guide rail; a spacing area is provided between two adjacent pinching and conveying assemblies; each of the guide assemblies is correspondingly arranged in one of the spacing areas, and the guide assemblies have a guide slit, which is connected to the slits of the two adjacent pinching and conveying assemblies.

[0017] In one embodiment, the guide assembly includes an inner guide block and an outer guide block; the inner guide block is arranged inside the outer guide block, and a guide gap is formed between the inner guide block and the outer guide block; between two adjacent clamping assemblies, the gap of the previous clamping assembly is connected to the gap of the next clamping assembly through the guide gap to form a vortex expansion gap; the inlet of the vortex guide rail is connected to the outlet of the vortex guide rail through the vortex expansion gap.

[0018] In one embodiment, the pinching assembly also includes a rotating driver, a driving shaft and a driven shaft; the rotating driver is installed at the top of the inner cavity wall of the box body; the driving shaft and the driven shaft are vertically arranged in parallel in the vortex guide rail, and the bottom end of the driving shaft is rotatably connected to the bottom of the vortex guide rail; the top end of the driving shaft passes through the top of the vortex guide rail and is connected to the power output end of the rotating driver; the two ends of the driven shaft are respectively rotatably connected to the bottom of the vortex guide rail and the top of the vortex guide rail; the first pinching wheel is sleeved on the driving shaft, and the second pinching wheel is sleeved on the driven shaft.

[0019] In one embodiment, the clamping assembly also includes a connecting frame, which is arranged between the rotating driver and the scroll guide rail; the connecting frame is connected to the scroll guide rail and forms a transmission cavity with the top of the scroll guide rail; the top end of the driving shaft passes through the transmission cavity in sequence, and the connecting frame is connected to the power output end of the rotating driver, and the top end of the driven shaft is rotatably connected to the connecting frame through the transmission cavity; a driving gear and a driven gear are arranged in the transmission cavity, the driving gear is sleeved on the driving shaft, the driven gear is sleeved on the driven shaft, and the driving gear is meshed with the driven gear.

[0020] In one embodiment, there are multiple unfolding mechanisms, and the multiple unfolding mechanisms are stacked vertically; the unwinding components of the unfolding mechanisms of each layer are coaxially arranged opposite to each other in the vertical direction; the clamping components of the unfolding mechanisms of two adjacent layers are vertically arranged opposite to each other; in the unfolding mechanisms of each layer, the clamping components located in the same vertical direction constitute a clamping group; a plurality of rotary drives are fixedly provided on the top of the inner cavity wall of the box body, each of the rotary drives is arranged opposite to a clamping group, and the first clamping wheel of each clamping component in the same clamping group is coaxially connected to the power output end of the corresponding rotary drive through a first rotating shaft; the second clamping wheel of each clamping component in the same clamping group is coaxially connected through a second rotating shaft.

[0021] In one of the embodiments, the heating element has a plurality of annular electric heating wires; the plurality of annular electric heating wires surround the unfolding mechanism and are spaced apart along the inner cavity side wall of the box body.

[0022] In one embodiment, a flow opening is opened on the inner cavity wall of the box body.

[0023] Compared with the prior art, the present invention has at least the following advantages:

[0024] 1) By arranging the unwinding assembly at the entrance of the spiral guide rail, since a plurality of clamping assemblies are spaced apart in the spiral guide rail along the winding direction of the spiral guide rail, a gap is formed between the first clamping wheel and the second clamping wheel, so that the pole piece of the pole piece roll to be debonded on the unwinding drum is clamped in the gap. Since the first clamping wheel and the second clamping wheel are arranged in the spiral guide rail in opposite directions, when the first clamping wheel and the second clamping wheel rotate in opposite directions, the pole piece of the pole piece roll to be debonded located in the gap is unfolded along the spiral guide rail due to the friction of the first clamping wheel and the second clamping wheel. Since the heating element is arranged around the unfolding mechanism, the inner cavity of the entire heating box can be heated by the heating element, thereby heat-melting the adhesive on the pole piece of the unfolded pole piece roll to be debonded.

[0025] 2) Compared with the lithium-ion battery positive electrode material recovery device in the prior art, the above-mentioned waste electrode sheet degumming device allows the electrode sheet roll to be degummed to be unfolded in the spiral guide rail, so that the heating element can fully heat-melt the adhesive on the electrode sheet of the unfolded electrode sheet roll to be degummed, and then quickly remove the adhesive without crushing the electrode sheet roll. This not only simplifies the electrode sheet degumming process, but also maintains the integrity of the electrode sheet. In the subsequent recovery of materials on the electrode sheet, there is no need to add an additional process for removing the electrode sheet, which facilitates the subsequent material recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A cross-sectional view of a waste electrode glue removal device according to an embodiment of the present disclosure;

[0028] Figure 2 for Figure 1 The structural schematic diagram of the deployment mechanism of the waste electrode glue removal device shown;

[0029] Figure 3 for Figure 1 A top cross-sectional view of the unfolding mechanism of the waste electrode glue removal device shown;

[0030] Figure 4 for Figure 1 A partial structural diagram of the unfolding mechanism of the waste electrode glue removal device shown;

[0031] Figure 5 It is a cross-sectional view of a waste electrode glue removal device according to another embodiment of the present invention.

[0032] Reference numerals: 100, housing; 110, heating element; 1110, annular electric heating wire; 200, unfolding mechanism; 210, vortex guide rail; 2111, vortex air port; 211a, air gap; 21a, inlet; 21b, outlet; 21c, vortex expansion sheet gap; 21d, ventilation gap; 220, unwinding assembly; 2210, unwinding bracket; 2220, unwinding drum; 23, pinching group; 230, pinching assembly; 2310, first pinching wheel; 2320, second pinching wheel; 231a, spacing area; 23a, gap; 2330, rotary driver; 2340, driving shaft; 2341, driving gear; 2350, driven shaft; 2351, driven gear; 2360, connecting frame; 236a, transmission chamber; 2370, rotary driver; 2380, first shaft; 2390, second shaft; 300, winding assembly; 310, winding bracket; 320, winding drum; 400, guide assembly; 410, inner guide block; 420, outer guide block; 43a, guide slit; 510, liquid inlet; 520, liquid outlet; 530, exhaust port. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0037] like Figure 1 and Figure 2As shown, a waste electrode glue removal device of an embodiment includes a box body 100 and an unfolding mechanism 200; the inner cavity of the box body 100 is provided with a heating element 110, and the heating element 110 is used to heat the inner cavity of the box body 100; the unfolding mechanism 200 is arranged in the inner cavity of the box body 100; the unfolding mechanism 200 includes a spiral guide rail 210, a reeling assembly 220 and a plurality of pinching assemblies 230; the reeling assembly 220 is arranged at the entrance 21a of the spiral guide rail 210; a plurality of pinching assemblies 230 are all arranged in the spiral guide rail 210 and are spaced apart along the winding direction of the spiral guide rail 210; the reeling assembly 220 is arranged at the entrance 21a of the spiral guide rail 210; a plurality of pinching assemblies 230 are arranged in the spiral guide rail 210 and are spaced apart along the winding direction of the spiral guide rail 210; Component 220 includes an unwinding bracket 2210 and an unwinding drum 2220, and the unwinding drum 2220 is rotatably arranged on the unwinding bracket 2210, and the unwinding drum 2220 is used to install the electrode roll to be debonded; the clamping component 230 includes a first clamping wheel 2310 and a second clamping wheel 2320; the first clamping wheel 2310 and the second clamping wheel 2320 are arranged opposite to each other, and the first clamping wheel 2310 and the second clamping wheel 2320 rotate in opposite directions, and a gap 23a is formed between the first clamping wheel 2310 and the second clamping wheel 2320, and the gap 23a is used to pass the electrode of the electrode roll to be debonded.

[0038] It can be understood that by arranging the unwinding assembly 220 at the entrance 21a of the spiral guide rail 210, since the plurality of pinching assemblies 230 are spaced apart in the spiral guide rail 210 along the winding direction of the spiral guide rail 210, a gap 23a is formed between the first pinching wheel 2310 and the second pinching wheel 2320, so that the pole piece of the pole piece roll to be debonded on the unwinding drum 2220 is clamped in the gap 23a, because the first pinching wheel 2310 and the second pinching wheel 2320 rotate in opposite directions. Placed in the spiral guide rail 210, when the first pinching wheel 2310 and the second pinching wheel 2320 rotate in opposite directions, the pole piece of the pole piece roll to be debonded located in the gap 23a is unfolded along the spiral guide rail 210 due to the friction of the first pinching wheel 2310 and the second pinching wheel 2320. Since the heating element 110 is arranged around the unfolding mechanism 200, the inner cavity of the entire heating box 100 can be heated by the heating element 110, thereby heat-melting the adhesive on the unfolded pole piece of the pole piece roll to be debonded.

[0039] It can be understood that compared with the lithium-ion battery positive electrode material recovery device in the prior art, the above-mentioned waste electrode sheet degumming device allows the electrode sheet roll to be degummed to be unfolded in the spiral guide rail 210, so that the heating element 110 can fully heat-melt the adhesive on the electrode sheet of the unfolded electrode sheet roll to be degummed, and then quickly remove the adhesive without crushing the electrode sheet roll. This not only simplifies the electrode sheet degumming process, but also maintains the integrity of the electrode sheet roll. In the subsequent recovery of materials on the electrode sheet, there is no need to add an additional process for removing the electrode sheet, which facilitates the subsequent recycling of materials.

[0040] Combination Figure 2As shown, in this embodiment, the waste electrode piece debonding device further includes a winding assembly 300; the winding assembly 300 is arranged at the outlet 21b of the spiral guide rail 210, and the winding assembly 300 includes a winding support 310 and a winding drum 320, and the winding drum 320 is rotatably arranged on the winding support 310, and the winding drum 320 is used to wind the electrode piece from which the glue has been removed. It can be understood that by arranging the winding assembly 300 at the outlet 21b of the spiral guide rail 210, since the winding drum 320 is rotatably arranged on the winding support 310, after the adhesive on the electrode piece of the electrode piece roll to be debonded is removed, the electrode piece of the electrode piece roll to be debonded becomes the electrode piece from which the glue has been removed, and the electrode piece from which the glue has been removed can be pulled out from the outlet 21b of the spiral guide rail 210 and attached to the winding drum 320, and the winding drum 320 can quickly wind the electrode piece from which the glue has been removed into the electrode piece roll from which the glue has been removed, and the electrode piece roll from which the glue has been removed is more convenient to be recycled.

[0041] Combination Figure 3 and Figure 4 As shown, further, the vertical cross-section of the vortex guide rail 210 is a U-shaped cross-section, and an air gap 211a is provided on the U-shaped cross-section; the air gap 211a extends along the rotation direction of the vortex guide rail 210, and forms a vortex air port 2111; the vortex pitch of the vortex guide rail 210 is greater than the width of the U-shaped cross-section, so that a ventilation gap 21d is formed between two adjacent circles of the guide rail wall of the vortex guide rail 210; the vortex air port 2111 is connected to the inner cavity of the box body 100 through the ventilation gap 21d. It can be understood that because the vortex pitch of the spiral guide 210 is greater than the width of the U-shaped cross-section, a ventilation gap 21d is formed between two adjacent circles of the guide wall of the spiral guide 210, and because an air gap 211a is provided on the vertical cross-section of the spiral guide 210, a spiral air port 2111 can be formed by extending the air gap 211a along the winding direction of the spiral guide 210, so that the inner cavity of the box body 100 can be connected to the spiral guide 210 through the ventilation gap 21d and the spiral air port 2111 in sequence. When the heating element 110 heats the inner cavity of the box body 100, the heat can be transferred to the spiral guide 210 more quickly through the ventilation gap 21d and the spiral air port 2111 in sequence, so that the adhesive on the pole piece roll to be debonded unfolded in the spiral guide 210 can be hot-melted and removed more quickly.

[0042] Combination Figure 3As shown, in one embodiment, a plurality of guide assemblies 400 are further arranged in the spiral guide rail 210; a spacing area 231a is arranged between two adjacent pinching assemblies 230; each guide assembly 400 is correspondingly arranged in a spacing area 231a, and the guide assembly 400 has a guide slit 43a, which is connected to the slits 23a of the two adjacent pinching assemblies 230. It can be understood that by arranging a guide assembly 400 between two adjacent pinching assemblies 230, the slits 23a of the two adjacent pinching assemblies 230 are respectively connected through the guide slits 43a of the guide assembly 400, so that the pole piece of the pole piece roll to be debonded can pass through each slit 23a in turn through the guide slit 43a and be unfolded in the entire spiral guide rail 210.

[0043] Combination Figure 3 As shown, specifically, the guide assembly 400 includes an inner guide block 410 and an outer guide block 420; the inner guide block 410 is arranged in the outer guide block 420, and a guide gap 43a is formed between the inner guide block 410 and the outer guide block 420; between two adjacent clamping assemblies 230, the gap 23a located at the previous clamping assembly 230 is connected to the gap 23a located at the next clamping assembly 230 through the guide gap 43a to form a vortex expansion gap 21c; the inlet 21a of the vortex guide rail 210 is connected to the outlet 21b of the vortex guide rail 210 through the vortex expansion gap 21c. It can be understood that since the guide slit 43a is formed between the inner guide block 410 and the outer guide block 420, the slit 23a located in the previous clamping assembly 230 can be connected to the slit 23a located in the next clamping assembly 230 through the guide slit 43a of the guide assembly 400. When the pole piece of the pole piece roll to be debonded is located in the slit 23a, the pole piece of the pole piece roll to be debonded will be restricted by the inner guide block 410 and the outer guide block 420 and will directly enter from the slit 23a of the previous clamping assembly 230 to the slit 23a of the next clamping assembly 230, and finally the pole piece of the pole piece roll to be debonded is quickly and smoothly unfolded in the entire spiral guide rail 210 under the guiding action of the spiral spreading gap 21c.

[0044] Combination Figure 1 and Figure 4As shown, in this embodiment, the clamping and conveying assembly 230 also includes a rotating driver 2330, a driving shaft 2340 and a driven shaft 2350; the rotating driver 2330 is installed at the top of the inner cavity wall of the housing 100; the driving shaft 2340 and the driven shaft 2350 are vertically arranged in parallel in the vortex guide 210, and the bottom end of the driving shaft 2340 is rotatably connected to the bottom of the vortex guide 210; the top end of the driving shaft 2340 passes through the top of the vortex guide 210 and is connected to the power output end of the rotating driver 2330; the two ends of the driven shaft 2350 are respectively rotatably connected to the bottom of the vortex guide 210 and the top of the vortex guide 210; the first clamping and conveying wheel 2310 is sleeved on the driving shaft 2340, and the second clamping and conveying wheel 2320 is sleeved on the driven shaft 2350. It can be understood that by making the first pinching wheel 2310 sleeved on the active rotating shaft 2340, and making the second pinching wheel 2320 sleeved on the driven rotating shaft 2350, because the active rotating shaft 2340 is connected to the power output end of the rotating driver 2330, the first pinching wheel 2310 can be driven to rotate by the rotating driver 2330, and the first pinching wheel 2310 drives the second pinching wheel 2320 through the friction of the pole piece of the pole piece roll to be debonded located in the gap 23a, and the first pinching wheel 2310 and the second pinching wheel 2320 jointly pinch the pole piece of the pole piece roll to be debonded, so that the pole piece of the pole piece roll to be debonded can be automatically and quickly unfolded in the spiral guide rail 210.

[0045] Combination Figure 4 As shown, further, the clamping and conveying assembly 230 also includes a connecting frame 2360, which is arranged between the rotation driver 2330 and the scroll guide 210; the connecting frame 2360 is connected to the scroll guide 210, and a transmission chamber 236a is formed between the connecting frame 2360 and the top of the scroll guide 210; the top of the driving shaft 2340 passes through the transmission chamber 236a in sequence, and the connecting frame 2360 is connected to the power output end of the rotation driver 2330, and the top of the driven shaft 2350 is rotatably connected to the connecting frame 2360 through the transmission chamber 236a; a driving gear 2341 and a driven gear 2351 are arranged in the transmission chamber 236a, the driving gear 2341 is sleeved on the driving shaft 2340, the driven gear 2351 is sleeved on the driven shaft 2350, and the driving gear 2341 is meshed with the driven gear 2351. It can be understood that by sleeve-connecting the driving gear 2341 on the driving shaft 2340 and sleeve-connecting the driven gear 2351 on the driven shaft 2350, when the rotating driver 2330 drives the driving shaft 2340 to rotate, the driving gear 2341 is meshed with the driven gear 2351, so that the driving shaft 2340 can synchronously drive the driven shaft 2350 to rotate, and then the first pinching wheel 2310 and the second pinching wheel 2320 rotate synchronously and pinch the pole piece of the pole piece roll to be debonded, which can effectively avoid the occurrence of wrinkles due to inconsistent transmission speeds on both sides of the pole piece of the pole piece roll to be debonded.

[0046] Combination Figure 5 As shown, in other embodiments, the number of unfolding mechanisms 200 is multiple, and the multiple unfolding mechanisms 200 are stacked in the vertical direction; the unwinding components 220 of the unfolding mechanisms 200 of each layer are coaxially arranged opposite to each other in the vertical direction; the clamping components 230 of the unfolding mechanisms 200 of two adjacent layers are arranged opposite to each other in the vertical direction; in the unfolding mechanisms 200 of each layer, the clamping components 230 located in the same vertical direction form a clamping group 23; a plurality of rotary drivers 2370 are fixedly provided on the top of the inner cavity wall of the box body 100, each rotary driver 2370 is arranged opposite to a clamping group 23, and the first clamping wheel 2310 of each clamping component 230 located in the same clamping group 23 is coaxially connected to the power output end of the corresponding rotary driver 2370 through the first rotating shaft 2380; the second clamping wheel 2320 of each clamping component 230 located in the same clamping group 23 is coaxially connected through the second rotating shaft 2390.

[0047] It can be understood that by stacking multiple unfolding mechanisms 200 in the vertical direction, the structures of the unfolding mechanisms 200 can be made compact, which can effectively reduce the floor space. At the same time, the unwinding components 220 of each layer of the unfolding mechanism 200 are coaxially arranged in the vertical direction, so that a pole piece roll to be debonded can be individually installed on the unwinding drum 2220 of the unwinding components 220 of each layer. In addition, because the first pinching wheel 2310 of each pinching component 230 located in the same pinching group 23 is coaxially connected to the power output end of the corresponding rotary driver 2370 through the first rotating shaft 2380, the first rotating shaft 2380 can be driven to rotate by the rotary driver 2370, and the first rotating shaft 2380 can drive the first pinching wheels 2310 located in the same pinching group 23 to rotate synchronously. The second pinching wheel 2320 of each pinching assembly 230 located in the same pinching group 23 is coaxially connected via the second rotating shaft 2390. When the pole piece of each pole piece roll to be debonded is clamped between the first pinching wheel 2310 and the second pinching wheel 2320 of the unfolding mechanism 200 of the corresponding layer, the pole piece of each pole piece roll to be debonded can drive the second pinching wheel 2320 to rotate synchronously, thereby enabling the pole piece of each pole piece roll to be debonded to be synchronously unfolded in the spiral guide rail 210 of the corresponding layer, and finally enabling the waste pole piece debonding device of this embodiment to debond multiple pole piece rolls to be debonded at one time.

[0048] Combination Figure 5As shown, in this embodiment, the annular electric heating wire 1110 of the heating element 110 is multiple; the multiple annular electric heating wires 1110 surround the outside of the unfolding mechanism 200 and are arranged at intervals along the inner cavity side wall of the box body 100. It can be understood that by arranging the multiple annular electric heating wires 1110 at intervals along the inner cavity side wall of the box body 100, the annular electric heating wires 1110 can be dispersed in the inner cavity of the box body 100, thereby making the inner cavity of the box body 100 evenly heated. At the same time, by surrounding the annular electric heating wire 1110 outside the unfolding mechanism 200, each local part of the circumferential direction of the unfolding mechanism 200 can be heated evenly.

[0049] In one embodiment, a flow opening is provided on the inner wall of the box 100. It can be understood that by providing the flow opening on the inner wall of the box 100, the flow opening can facilitate the flow of heat-conducting medium to dissipate heat or discharge the fallen adhesive. Figure 1 As shown, in one embodiment, the flow port includes two, namely, a liquid inlet 510 and a liquid outlet 520, wherein the liquid inlet 510 is opened at the top of the inner cavity wall of the box body 100, and the liquid outlet 520 is opened at the bottom of the inner cavity wall of the box body 100; the organic solvent can enter the inner cavity of the box body 100 through the liquid inlet 510, and enter the spiral guide 210 from the inlet 21a of the spiral guide 210 and the outlet 21b of the spiral guide 210 to fully contact the unfolded pole piece roll to be debonded. The heating element 110 heats the organic solvent so that the adhesive on the pole piece roll to be debonded can be dissolved in the organic solvent more quickly and fully to form an organic solvent-adhesive mixture, which is finally discharged through the liquid outlet 520. The organic solvent may be N-methylpyrrolidone, N,N-dimethylformamide or dimethylacetamide, the binder may be PVDF (polyvinylidene fluoride), the heating temperature of the heating element 110 is 150°C-200°C, and PVDF is in a molten state at a temperature of 150°C-200°C and can quickly separate from the pole piece of the pole piece roll to be debonded, and can be fully dissolved in the binder. Figure 2 As shown, in another embodiment, the flow port is an exhaust port 530, and the exhaust port 530 is opened at the top of the inner cavity wall of the box body 100. The heating element 110 heats the inner cavity of the box body 100, and the adhesive that falls off absorbs heat and becomes waste gas, and the waste gas can be quickly discharged through the exhaust port 530. For example, when the adhesive can be PVDF, the heating temperature of the heating element 110 is 600°C, and the temperature of 600°C can make the PVDF gasify and be discharged from the exhaust port 530.

[0050] In one embodiment, for better understanding, the use process of the waste electrode glue removal device of the above embodiment is described as follows:

[0051] When in use, first install the pole piece roll to be debonded on the unwinding drum 2220, then make the pole piece of the pole piece roll to be debonded enter from the entrance 21a of the spiral guide 210 and be clamped in the gap 23a, rotate the driver 2330 to drive the active shaft 2340 to rotate, the active gear 2341 engages the driven gear 2351 to drive the driven shaft 2350, so that the first clamping wheel 2310 and the second clamping wheel 2320 rotate synchronously and clamp the pole piece of the pole piece roll to be debonded, the pole piece roll to be debonded is unfolded in the spiral guide 210, the heating element 110 heats the inner cavity of the box body 100, the adhesive on the pole piece roll to be debonded is heated and vaporized into waste gas, the waste gas is discharged from the exhaust port 530, the pole piece whose glue has been removed is pulled out from the outlet 21b of the spiral guide 210 and attached to the winding drum 320, and the winding drum 320 rotates and recycles the pole piece whose glue has been removed.

[0052] Compared with the prior art, the present invention has at least the following advantages:

[0053] 1) By arranging the unwinding assembly 220 at the entrance 21a of the spiral guide rail 210, since the plurality of pinching assemblies 230 are spaced apart in the spiral guide rail 210 along the winding direction of the spiral guide rail 210, a gap 23a is formed between the first pinching wheel 2310 and the second pinching wheel 2320, so that the pole piece of the pole piece roll to be debonded on the unwinding drum 2220 is clamped in the gap 23a, because the first pinching wheel 2310 and the second pinching wheel 2320 are arranged to rotate in opposite directions. In the spiral guide rail 210, when the first pinching wheel 2310 and the second pinching wheel 2320 rotate in opposite directions, the pole piece of the pole piece roll to be debonded located in the gap 23a is unfolded along the spiral guide rail 210 due to the friction of the first pinching wheel 2310 and the second pinching wheel 2320. Since the heating element 110 is arranged around the unfolding mechanism 200, the inner cavity of the entire heating box 100 can be heated by the heating element 110, thereby heat-melting the adhesive on the unfolded pole piece of the pole piece roll to be debonded.

[0054] 2) Compared with the lithium-ion battery positive electrode material recovery device in the prior art, the above-mentioned waste electrode sheet degumming device allows the electrode sheet roll to be degummed to be unfolded in the spiral guide rail 210, so that the heating element 110 can fully heat-melt the adhesive on the electrode sheet of the unfolded electrode sheet roll to be degummed, and then quickly remove the adhesive without crushing the electrode sheet roll. This not only simplifies the electrode sheet degumming process, but also maintains the integrity of the electrode sheet roll. In the subsequent process of recovering the material on the electrode sheet, there is no need to add an additional process of removing the electrode sheet, which facilitates the subsequent material recycling.

[0055] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the attached claims.

Claims

1. A waste electrode degumming device, characterized in that: include: A box body (100), wherein an inner cavity of the box body (100) is provided with a heating element (110), and the heating element (110) is used to heat the inner cavity of the box body (100); An unfolding mechanism (200), the unfolding mechanism (200) being arranged in the inner cavity of the box body (100); the unfolding mechanism (200) comprising a spiral guide rail (210), an unwinding assembly (220) and a plurality of pinching and conveying assemblies (230); the unwinding assembly (220) being arranged at the entrance (21a) of the spiral guide rail (210); a plurality of the pinching and conveying assemblies (230) being arranged in the spiral guide rail (210) and being spaced apart along the spiral direction of the spiral guide rail (210); The unwinding assembly (220) comprises an unwinding support (2210) and an unwinding drum (2220), wherein the unwinding drum (2220) is rotatably disposed on the unwinding support (2210), and the unwinding drum (2220) is used to install the electrode roll to be debonded; The clamping assembly (230) includes a first clamping wheel (2310) and a second clamping wheel (2320); the first clamping wheel (2310) and the second clamping wheel (2320) are arranged opposite to each other, and the first clamping wheel (2310) and the second clamping wheel (2320) rotate in opposite directions, and a gap (23a) is formed between the first clamping wheel (2310) and the second clamping wheel (2320), and the gap (23a) is used to pass the pole piece of the pole piece roll to be debonded.

2. The waste electrode glue removal device according to claim 1 is characterized in that: The waste electrode glue removal device also includes a winding component (300); The winding assembly (300) is arranged at the outlet (21b) of the spiral guide rail (210), and the winding assembly (300) comprises a winding support (310) and a winding drum (320). The winding drum (320) is rotatably arranged on the winding support (310), and the winding drum (320) is used to wind up the electrode sheet from which the glue has been removed.

3. The waste electrode glue removal device according to claim 1 is characterized in that: The vertical cross-section of the vortex guide rail (210) is a U-shaped cross-section, and an air-passing notch (211a) is provided on the U-shaped cross-section; the air-passing notch (211a) extends along the spiral direction of the vortex guide rail (210) and forms a vortex air port (2111); the vortex pitch of the vortex guide rail (210) is greater than the width of the U-shaped cross-section, so that a ventilation gap (21d) is formed between two adjacent circles of the guide rail wall of the vortex guide rail (210); and the vortex air port (2111) is connected to the inner cavity of the casing (100) through the ventilation gap (21d).

4. The waste electrode glue removal device according to claim 1 is characterized in that: A plurality of guide assemblies (400) are also arranged in the vortex guide rail (210); a spacing area (231a) is arranged between two adjacent pinching and conveying assemblies (230); each guide assembly (400) is correspondingly arranged in one of the spacing areas (231a), and the guide assembly has a guide slit (43a), and the guide slit (43a) is connected to the slits (23a) of the two adjacent pinching and conveying assemblies (230).

5. The waste electrode glue removal device according to claim 4 is characterized in that: The guide assembly (400) comprises an inner guide block (410) and an outer guide block (420); the inner guide block (410) is arranged inside the outer guide block (420), and a guide slit (43a) is formed between the inner guide block (410) and the outer guide block (420); between two adjacent pinching assemblies (230), the pinching slit (23a) located at the previous pinching assemblies (230) is connected to the pinching slit (23a) located at the next pinching assemblies (230) through the guide slit (43a) to form a vortex expansion gap (21c); the inlet (21a) of the vortex guide rail (210) is connected to the outlet (21b) of the vortex guide rail (210) through the vortex expansion gap (21c).

6. The waste electrode glue removal device according to claim 1 is characterized in that: The clamping and conveying assembly (230) further comprises a rotation driver (2330), a driving shaft (2340) and a driven shaft (2350); the rotation driver (2330) is mounted on the top of the inner cavity wall of the housing (100); the driving shaft (2340) and the driven shaft (2350) are vertically arranged in parallel in the vortex guide rail (210), and the bottom end of the driving shaft (2340) is rotatably connected to the bottom of the vortex guide rail (210); the driving shaft (2340) and the driven shaft (2350) are vertically arranged in parallel in the vortex guide rail (210), and the bottom end of the driving shaft (2340) is rotatably connected to the bottom of the vortex guide rail (210); The top end of the shaft (2340) passes through the top of the vortex guide rail (210) and is connected to the power output end of the rotation driver (2330); the two ends of the driven shaft (2350) are respectively rotatably connected to the bottom of the vortex guide rail (210) and the top of the vortex guide rail (210); the first pinch wheel (2310) is sleeved on the driving shaft (2340), and the second pinch wheel (2320) is sleeved on the driven shaft (2350).

7. The waste electrode glue removal device according to claim 6 is characterized in that: The clamping and conveying assembly (230) further comprises a connecting frame (2360), wherein the connecting frame (2360) is arranged between the rotation driver (2330) and the vortex guide rail (210); the connecting frame (2360) is connected to the vortex guide rail (210), and a transmission cavity (236a) is formed between the connecting frame (2360) and the top of the vortex guide rail (210); the top end of the driving shaft (2340) passes through the transmission cavity (236a), the connecting frame (2360) and the rotation driver (2330) in sequence. 30), the top end of the driven rotating shaft (2350) is rotatably connected to the connecting frame (2360) through the transmission chamber (236a); a driving gear (2341) and a driven gear (2351) are arranged in the transmission chamber (236a), the driving gear (2341) is sleeved on the driving rotating shaft (2340), the driven gear (2351) is sleeved on the driven rotating shaft (2350), and the driving gear (2341) is meshed with the driven gear (2351).

8. The waste electrode glue removal device according to claim 1 is characterized in that: The number of the unfolding mechanisms (200) is plural, and the plural unfolding mechanisms (200) are stacked in the vertical direction; the unwinding components (220) of the unfolding mechanisms (200) of each layer are coaxially arranged opposite to each other in the vertical direction; the pinching components (230) of the unfolding mechanisms (200) of two adjacent layers are arranged opposite to each other in the vertical direction; in the unfolding mechanisms (200) of each layer, the pinching components (230) located in the same vertical direction form a pinching group (23); the top of the inner cavity wall of the box body (100) is fixed A plurality of rotary drivers (2370) are provided, each of the rotary drivers (2370) being arranged opposite to a pinching group (23); a first pinching wheel (2310) of each pinching assembly (230) in the same pinching group (23) is coaxially connected to a power output end of the corresponding rotary driver (2370) via a first rotating shaft (2380); and a second pinching wheel (2320) of each pinching assembly (230) in the same pinching group (23) is coaxially connected via a second rotating shaft (2390).

9. The waste electrode glue removal device according to claim 1, characterized in that: The heating element (110) has a plurality of annular electric heating wires (1110); the plurality of annular electric heating wires (1110) surround the unfolding mechanism (200) and are spaced apart along the inner cavity side wall of the box body (100).

10. The waste electrode glue removal device according to claim 1, characterized in that: A flow opening is provided on the inner cavity wall of the box body (100).

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