Pole piece stripping device

Abstract

The invention relates to a pole piece stripping device which is used for stripping an active material on the surface of a current collector, the pole piece stripping device comprises a rack, a conveying mechanism, a recovery tank and a spraying mechanism, the conveying mechanism is arranged on the rack, the conveying mechanism comprises a first mounting assembly, a second mounting assembly, a first grid belt and a second grid belt, the first grid belt is wound on the outer side of the first mounting assembly, the second grid belt is wound on the outer side of the second mounting assembly, at least parts of the first grid belt and the second grid belt are oppositely arranged, and the first grid belt and the second grid belt are matched and used for clamping a pole piece; a first fluid is arranged in the recovery tank, the first grid belt and the second grid belt are at least partially immersed in the first fluid, and the first fluid is used for heating the pole piece; the spraying mechanism is arranged on the rack and used for spraying second fluid towards the pole piece.

Description

Technical Field

[0001] This application relates to the field of electrode recycling technology, specifically to an electrode stripping device. Background Technology

[0002] With the rapid development of the new energy vehicle industry, a large number of lithium iron phosphate batteries are entering their retirement period, making their efficient recycling an urgent industry need. Wet physical recycling technology for lithium iron phosphate has become one of the mainstream processes due to its environmental friendliness and low cost. However, in current recycling methods, the active material is firmly bonded to the current collector during the electrode stripping process, resulting in incomplete detachment and poor stripping efficiency. Summary of the Invention

[0003] In view of this, this application provides an electrode stripping device, which has a good stripping effect on the active material on the current collector.

[0004] This application provides an electrode stripping device for stripping active material from the surface of a current collector. The electrode stripping device includes a frame, a conveying mechanism, a recovery tank, and a spraying mechanism. The conveying mechanism is disposed on the frame and includes a first mounting component, a second mounting component, a first mesh belt, and a second mesh belt. The first mesh belt is wrapped around the outside of the first mounting component, and the second mesh belt is wrapped around the outside of the second mounting component. The first mesh belt and the second mesh belt are at least partially opposite to each other and cooperate with each other to clamp the electrode. The recovery tank contains a first fluid, and the first mesh belt and the second mesh belt are at least partially immersed in the first fluid. The first fluid is used to heat the electrode. The spraying mechanism is disposed on the frame and is used to spray a second fluid toward the electrode.

[0005] Furthermore, along the conveying path of the conveying mechanism, the recycling tank includes a first sub-tank, a second sub-tank, and a third sub-tank arranged sequentially. The temperature of the first fluid in the second sub-tank is higher than the temperature of the first fluid in the first sub-tank, and the temperature of the first fluid in the second sub-tank is higher than the temperature of the first fluid in the third sub-tank. The first sub-tank is used to preheat the electrode sheet, and the first mesh belt, the second mesh belt, and the electrode sheet are all immersed in the first fluid in the first sub-tank. The spraying mechanism includes a spraying unit, which is arranged corresponding to the second sub-tank and above the conveying path of the conveying mechanism, for spraying the second fluid toward the electrode sheet. The first fluid in the third sub-tank is used to rinse the collecting fluid.

[0006] Furthermore, the spray unit is disposed above the second sub-slot; the spray unit includes a spray nozzle for spraying a second fluid toward the electrode, the spraying direction of the second fluid being set at an acute angle to the surface of the electrode.

[0007] Furthermore, the angle α between the spray direction of the second fluid ejected from the spray nozzle and the surface of the electrode plate is in the range of 20°≤α≤35°; and / or, the spray pressure P1 of the spray nozzle is in the range of 0.1MPa≤P1≤0.3MPa.

[0008] Furthermore, the spray unit also includes a flushing nozzle. Along the conveying path of the conveying mechanism, the spray nozzle and the flushing nozzle are arranged in sequence. The flushing nozzle is used to spray a second fluid toward the electrode. The angle β between the spraying direction of the second fluid sprayed by the flushing nozzle and the surface of the electrode is in the range of 85°≤β≤95°.

[0009] Furthermore, the spray pressure P2 of the rinsing nozzle is in the range of 0.4MPa≤P2≤0.7MPa.

[0010] Furthermore, the spraying mechanism also includes a support plate, which is located on opposite sides of the electrode and the rinsing nozzle. The support plate is spaced apart from the electrode, and the support plate is used to support the electrode when the rinsing nozzle rinses the electrode.

[0011] Furthermore, the number of spray units is two sets, and the two sets of spray units are arranged at intervals along the conveying path of the conveying mechanism, and the two sets of spray units are respectively arranged on opposite sides of the electrode sheet.

[0012] Furthermore, the electrode stripping device also includes a nozzle mechanism, which is spaced apart from the spray unit. The nozzle mechanism includes at least two nozzles, both of which are immersed in the first fluid. The nozzles are used to spray gas toward the electrode. At least one nozzle is located on one side of the electrode, and at least one nozzle is located on the other side of the electrode.

[0013] Furthermore, along the arrangement direction of the first sub-slot, the second sub-slot, and the third sub-slot, the ratio A1 of the length of the first sub-slot to the length of the second sub-slot is in the range of 0.95≤A1≤1.05; the ratio A2 of the length of the second sub-slot to the length of the third sub-slot is in the range of 1.8≤A2≤2.3.

[0014] Furthermore, the bottoms of the first sub-slot, the second sub-slot, and the third sub-slot are sequentially connected; the recycling tank has a preset bottom wall, which is inclined relative to the horizontal direction along the arrangement direction of the first sub-slot, the second sub-slot, and the third sub-slot, so that the depth of the first sub-slot, the depth of the second sub-slot, and the depth of the third sub-slot gradually increase.

[0015] Furthermore, the electrode stripping device also includes a collection pit, which is connected to the recycling tank to collect the active material in the recycling tank.

[0016] Furthermore, the electrode stripping device also includes a transport mechanism and a storage mechanism. The transport mechanism is at least partially disposed in the collection pit and transports the collected active material to the storage mechanism, which is used to store the active material.

[0017] Furthermore, the transport mechanism includes a collecting screw and a discharging screw. The collecting screw is disposed in the collecting pit, and the discharging screw is connected to the collecting screw. The discharging screw has a discharge port, which is disposed corresponding to the storage mechanism. The collecting screw is used to collect the active material in the collecting pit to a side close to the discharging screw, and the discharging screw is used to transport the active material in the collecting pit to the storage mechanism.

[0018] Further, the first mounting assembly includes a plurality of first support rollers and a first tension roller, the plurality of first support rollers and the first tension rollers being spaced apart, the first mesh belt being wound around the outer periphery of each of the first support rollers and the first tension rollers, and the first tension rollers being used to adjust the tension of the first mesh belt; and / or, the second mounting assembly includes a plurality of second support rollers and a second tension roller, the plurality of second support rollers and the second tension rollers being spaced apart, the second mesh belt being wound around the outer periphery of each of the second support rollers and the second tension rollers, and the second tension rollers being used to adjust the tension of the second mesh belt.

[0019] Furthermore, the electrode stripping device further includes a first water supply mechanism, a second water supply mechanism, and a third water supply mechanism. The first water supply mechanism delivers the first fluid to the first sub-tank, the second water supply mechanism delivers the first fluid to the second sub-tank, and the third water supply mechanism delivers the first fluid to the third sub-tank. Each of the first, second, and third water supply mechanisms includes a water supply tank, a drive pump, and a heater. The recovery tank, the water supply tank, the drive pump, and the heater are connected in sequence. The drive pump is used to drive the flow of the first fluid in the water supply tank and the recovery tank, and the heater is used to heat the first fluid.

[0020] Furthermore, the recovery tank has an overflow plate, which is disposed on at least one side of the recovery tank along a preset direction. The overflow plate has an overflow channel inside, which communicates with the recovery tank. When the liquid level of the first fluid in the recovery tank reaches a preset value, the first fluid enters the overflow channel from the recovery tank. The preset direction intersects with the arrangement direction of the first sub-channel, the second sub-channel, and the third sub-channel, and also intersects with the direction of gravity. From the direction of the third sub-channel to the first sub-channel, the overflow plate is inclined towards the bottom of the recovery tank relative to the horizontal direction, so that the flow direction of the first fluid in the overflow channel is away from the conveying path of the conveying mechanism.

[0021] In the electrode peeling device provided in this application, the first mesh belt is wrapped around the outside of the first mounting assembly, and the second mesh belt is wrapped around the outside of the second mounting assembly. The first mesh belt and the second mesh belt are at least partially opposite to each other. The first mesh belt and the second mesh belt cooperate to clamp the electrode. When the first mesh belt and the second mesh belt rotate synchronously, the electrode can be stably transported by friction, providing continuous and precise material transfer for subsequent peeling processes. Specifically, during the electrode peeling process, the electrode is clamped between the first mesh belt and the second mesh belt. Through the clamping cooperation of the first mesh belt and the second mesh belt, pleated structures are pressed into the two opposing surfaces of the electrode. When the spraying mechanism sprays the second fluid onto the electrode, the pleated structures can increase the contact area between the active material layer and the second fluid, and the pleated structures will further enhance the impact of the second fluid on the active material, making it easier for the active material on the current collector to fall off, thereby improving the efficiency of the electrode peeling device in peeling the active material from the surface of the current collector. On the other hand, when the electrode enters the recycling tank along with the first and second mesh belts, the electrode is immersed in the first fluid. The first fluid heats the electrode, uniformly transferring its heat to the active material layer on the surface of the current collector. The heat of the first fluid intensifies the thermal motion of the binder molecules within the active material layer, weakening the intermolecular forces. The binder molecules transform from a tightly packed, rigid solid to a slightly deformable, softened state. This process achieves uniform softening of the active material layer, effectively weakening the bond strength between the active material and the current collector, thus preparing for efficient removal of the active material from the current collector. Furthermore, when the electrode approaches the spraying mechanism under the transmission of the first and second mesh belts, the spraying mechanism precisely sprays a second fluid toward the electrode. The second fluid acts on the active material layer on the surface of the current collector with impact force, disrupting the bonding interface between the active material layer and the current collector, achieving efficient separation of the active material from the current collector. The active material detached from the current collector falls to the bottom of the recovery tank under gravity, while the current collector continues to move under the continuous conveying of the first and second mesh belts, thereby achieving complete separation of the current collector from the active material. The electrode stripping device provided in this application has a smooth and highly automated stripping process, resulting in high stripping efficiency for the active material on the surface of the current collector and the ability to recover most of the active material, avoiding waste. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an energy storage system according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of an energy storage system according to another embodiment of this application; Figure 3 This is a schematic diagram of the structure of an energy storage system according to another embodiment of this application; Figure 4 This is a schematic diagram of the structure of an electrode stripping device according to an embodiment of this application; Figure 5 This is a schematic diagram illustrating the cooperation relationship between the electrode stripping device and the electrode according to an embodiment of this application; Figure 6 for Figure 4 Enlarged view of the dashed box A in the middle; Figure 7 for Figure 6 Enlarged view of the dashed box in section B; Figure 8 This is a top view of a support plate according to an embodiment of this application; Figure 9 for Figure 4 Enlarged view of the dashed box in the middle (C); Figure 10 This is a schematic diagram of the structure of an electrode stripping device according to another embodiment of this application.

[0024] Explanation of reference numerals in the attached figures: 100 - Electrode stripping device; 110 - Conveying mechanism; 111 - First mounting assembly; 1111 - First support roller; 1112 - First tension roller; 112 - Second mounting assembly; 1121 - Second support roller; 1122 - Second tension roller; 113 - First mesh belt; 114 - Second mesh belt; 120 - Recycling tank; 121 - First sub-tank; 122 - Second sub-tank; 123 - Third sub-tank; 124 - Preset bottom wall; 130 - Spraying mechanism; 131 - Spraying unit; 1311 - Spray nozzle; 1312 - Flushing nozzle; 132 - Air nozzle mechanism; 1321 - Air nozzle; 140 - Collection pit; 150 - Transport mechanism; 151 - Collection screw; 152 - Discharge screw; 1521 - Discharge port; 160 - Storage mechanism 161-Conveying assembly, 1611-First conveyor roller, 1612-Second conveyor roller, 1613-Conveyor belt, 162-First storage tank, 163-Second storage tank, 170-First water supply mechanism, 180-Second water supply mechanism, 190-Third water supply mechanism, 191-Water supply tank, 192-Drive pump, 193-Heater, 210-Overflow plate, 230-Support plate, 231-Through hole, 240-Vision detector, 250-Filter, 300-Electrode, 400-Energy storage system, 410-First power conversion device, 420-First user load, 430-Second user load, 440-Energy storage device, 450-High voltage cable, 460-Second power conversion device, 470-Photovoltaic-storage-charging station, 480-Vehicle. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0027] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] With the rapid development of the new energy vehicle industry, a large number of lithium iron phosphate batteries are entering their retirement period, making their efficient recycling an urgent industry need. Wet physical recycling technology for lithium iron phosphate has become one of the mainstream processes due to its environmental friendliness and low cost. However, in current recycling methods, the active material is firmly bonded to the current collector during the electrode stripping process, resulting in incomplete detachment and poor stripping efficiency.

[0029] In addition, current recycling methods have other technical problems: First, they cannot effectively process double-sided coated electrodes, resulting in poor peeling of the lower surface; second, they have low thermal energy utilization, and direct discharge of high-temperature wastewater leads to energy waste; third, the accumulation of fine particulate matter in the circulating water affects the spraying effect and easily clogs the system; fourth, the process parameters are fixed and cannot be adjusted in real time according to the state of the electrodes; and fifth, the aluminum foil is easily damaged and curled during the peeling process, reducing its recycling value.

[0030] Because the energy we need is highly time- and space-dependent, in order to utilize energy rationally and improve energy efficiency, it is necessary to store one form of energy in the same way or by converting it into another, and then release it in a specific energy form for future applications. Currently, the main way to generate green electricity is to develop green energy sources such as photovoltaics and wind power to replace fossil fuels. Currently, the generation of green electricity generally relies on solar, wind, and hydropower. However, wind and solar power are generally characterized by strong intermittency and large fluctuations, which can cause grid instability, insufficient power during peak demand periods, and excessive power during off-peak periods. Unstable voltage can also damage the power grid. Therefore, insufficient electricity demand or insufficient grid capacity may lead to the problem of "wind and solar curtailment." Solving these problems requires energy storage. This involves converting electrical energy into other forms of energy through physical or chemical means and storing it. When needed, this energy can be converted back into electrical energy and released. Simply put, energy storage is like a large "power bank," storing electrical energy when solar and wind power are abundant and releasing the stored electricity when needed.

[0031] Taking electrochemical energy storage as an example, this solution provides an energy storage device 440, which is applied to an energy storage system 400. The energy storage device 440 is equipped with a set of chemical batteries, which mainly use the chemical elements in the batteries as energy storage medium. The charging and discharging process is accompanied by the chemical reaction or change of the energy storage medium. Simply put, the electrical energy generated by wind and solar energy is stored in the chemical batteries. When the use of external electrical energy reaches its peak, the stored electrical energy is released for use, or transferred to places with a shortage of electricity for use.

[0032] Current energy storage applications are quite widespread, including generation-side energy storage, grid-side energy storage, and consumption-side energy storage. The corresponding energy storage devices 440 include: (1) Large-scale energy storage power stations (including multiple prefabricated energy storage modules) applied to wind power and photovoltaic power stations can help renewable energy power generation meet grid connection requirements and improve the utilization rate of renewable energy. As a high-quality active / reactive power regulation power source on the power supply side, the energy storage power station can realize the load matching of power in time and space, enhance the renewable energy absorption capacity, reduce instantaneous power changes, reduce the impact on the power grid, improve the problem of new energy power generation absorption, and is of great significance in power grid system backup, alleviating peak load power supply pressure and peak regulation and frequency regulation.

[0033] (2) The energy storage prefabricated cabin applied on the grid side mainly functions as peak regulation, frequency regulation and grid congestion relief. In terms of peak regulation, it can realize peak shaving and valley filling of electricity load, that is, charging the energy storage battery when the electricity load is low and releasing the stored electricity during the peak electricity load period, thereby achieving a balance between power production and consumption.

[0034] (3) Small energy storage cabinets applied to the electricity consumption side mainly function as self-consumption of electricity, peak-valley price arbitrage, capacity cost management, and improvement of power supply reliability. Depending on the application scenario, electricity consumption side energy storage can be divided into industrial and commercial energy storage cabinets, household energy storage devices 440, energy storage charging piles, etc., which are generally used in conjunction with distributed photovoltaics. Industrial and commercial users can use energy storage for peak-valley price arbitrage and capacity cost management. In the electricity market implementing peak-valley pricing, by charging the energy storage system 400 when the electricity price is low and discharging the energy storage system 400 when the electricity price is high, peak-valley price arbitrage can be achieved, reducing electricity costs. In addition, industrial enterprises subject to two-part tariffs can use the energy storage system 400 to store energy during the low electricity consumption period and discharge during the peak load period, thereby reducing peak power and the maximum demand declared, and achieving the goal of reducing capacity electricity costs. Household photovoltaics with energy storage can improve the level of self-consumption of electricity. Due to high electricity prices and poor power supply stability, the demand for household photovoltaic installations is driven. Given that photovoltaic power generation occurs during the day, while user load is generally higher at night, configuring energy storage can better utilize photovoltaic power, improve self-consumption levels, and reduce electricity costs. Furthermore, energy storage is needed in areas such as communication base stations and data centers for backup power.

[0035] In some embodiments, see Figure 1 , Figure 1 This is a schematic diagram of the structure of an energy storage system 400 according to an embodiment of this application. Figure 1 The embodiments are illustrated using a home energy storage scenario in user-side energy storage as an example. The energy storage device 440 in this application is not limited to an energy storage box in a home energy storage scenario.

[0036] This application provides an energy storage system 400, which includes a first power conversion device 410 (photovoltaic panel), a first user load 420 (household lighting fixture), a second user load 430 (e.g., household appliances such as air conditioners), and the energy storage device 440 of this application. The energy storage device 440 is a small energy storage box that can be wall-mounted on an outdoor wall. However, the energy storage device 440 is not limited to wall mounting and can also be placed in a user's residence in other ways. Specifically, the photovoltaic panel can convert solar energy into electrical energy during periods of low electricity prices, and the energy storage device 440 is used to store this electrical energy and supply it to lighting fixtures and household appliances during peak electricity prices, or to provide power during power outages / power failures.

[0037] Optionally, the first power conversion device 410 may include, but is not limited to, a photovoltaic panel, and the first power conversion device 410 can convert at least one of solar energy, light energy, wind energy, thermal energy, tidal energy, biomass energy and mechanical energy into electrical energy.

[0038] In some embodiments, see Figure 2 , Figure 2This is a schematic diagram of the structure of an energy storage system 400 according to another embodiment of this application, and this application Figure 2 The embodiments are illustrated using a shared energy storage scenario on the power generation / distribution side as an example. The energy storage device 440 in this application is not limited to a prefabricated energy storage module in a power generation / distribution energy storage scenario.

[0039] This application provides an energy storage system 400, which includes: a high-voltage cable 450, a first power conversion device 410, a second power conversion device 460, and an energy storage device 440 provided in this application. In some embodiments of the power generation scenario, the second power conversion device 460 can be a wind power conversion device. Since the electricity generated by wind power conversion is volatile, random, and intermittent, the unstable electricity output by the wind power conversion device can be stored in the energy storage device 440 through grid connection. The energy storage device 440 is connected to the high-voltage cable and outputs smooth electricity to the power consumption side of the distribution network, realizing peak shaving and frequency regulation, and stable grid operation; or, wind power... The conversion device is always connected to the high-voltage cable. Under normal power generation conditions, the power output of the wind power conversion device is supplied to the power consumption side of the distribution network through the high-voltage cable. When the current power load is low and the wind power conversion device generates excess power, the excess power is first stored in the energy storage device 440 to reduce wind and solar curtailment rates and improve the problem of new energy power generation consumption. When the power load is high, the power grid issues an instruction to transmit the power stored in the energy storage device 440 together with the high-voltage cable 450 in grid-connected mode to supply power to the power consumption side. This provides the power grid with various services such as peak shaving, frequency regulation, and backup, giving full play to the peak shaving role of the power grid, promoting peak shaving and valley filling, and alleviating the power supply pressure of the power grid.

[0040] In some embodiments on the distribution network side, the first power conversion device 410 can be a photovoltaic panel, and the energy storage device 440 is connected to the high-voltage cable 450 and installed downstream of the high-voltage cable 450 and between the user load. The electrical energy output by the photovoltaic power conversion device is stored in the energy storage device 440, which can respond in a timely manner to act as a backup power source when the power grid / distribution network fails; or, it can provide power supply support to alleviate line congestion when the high-voltage cable 450 transmission line is blocked, and to delay the economic pressure caused by the expansion of the power grid / distribution capacity when the power grid is planned to be expanded.

[0041] Optionally, the first power conversion device 410 may include, but is not limited to, a wind power conversion device, and the second power conversion device 460 may include, but is not limited to, a photovoltaic panel. The first power conversion device 410 and the second power conversion device 460 can convert at least one of solar energy, light energy, wind energy, thermal energy, tidal energy, biomass energy, and mechanical energy into electrical energy.

[0042] In some embodiments, see Figure 3 , Figure 3This is a schematic diagram of the structure of an energy storage system 400 according to another embodiment of this application, and this application Figure 3 The embodiments are illustrated using an industrial and commercial energy storage scenario as an example. The energy storage device 440 in this application is not limited to an energy storage cabinet in an industrial and commercial energy storage scenario.

[0043] This application provides an energy storage system 400, which includes: an energy storage device 440, a high-voltage cable 450, a factory equipped with a first power conversion device 410, a photovoltaic-energy storage-charging station 470 equipped with a second power conversion device 460, and a vehicle 480. In some embodiments of industrial and commercial scenarios, the first power conversion device 410 can be a photovoltaic panel, which converts solar energy into electrical energy and stores it in the energy storage device 440 in the factory. In the event of a power grid failure, the energy storage device 440 provides power to ensure the safe and stable operation of the factory without interruption. Alternatively, when the factory's power load is high, the power grid issues an instruction to transmit the electricity stored in the energy storage device 440 in conjunction with the high-voltage cable 450 in a grid-connected mode to supply the factory with electricity, providing various services such as peak shaving / frequency regulation and backup for the power grid operation. In addition, the second power conversion device 460 can also be a photovoltaic panel, which converts solar energy into electrical energy and stores it in the energy storage device 440 of the photovoltaic-energy storage-charging station 470, directly charging the vehicle 480 through the photovoltaic-energy storage-charging station 470, which is fast and convenient.

[0044] Optionally, the first power conversion device 410 and the second power conversion device 460 may include, but are not limited to, a photovoltaic panel. The first power conversion device 410 can convert at least one of solar energy, light energy, wind energy, thermal energy, tidal energy, biomass energy, and mechanical energy into electrical energy.

[0045] Optionally, the energy storage device 440 may include, but is not limited to, energy storage applications such as energy storage power stations, hydropower / thermal / wind power generation systems, solar power generation systems, mobile power systems, smart home systems, or temporary power supply systems, and may also be applied in multiple fields such as data centers, military equipment, aerospace, charging piles, and electric vehicles.

[0046] Optionally, the energy storage device 440 may include, but is not limited to, single-cell batteries, or battery modules, battery packs, battery clusters, power banks, energy storage cabinets / prefabricated energy storage compartments, and other battery integrated systems composed of single-cell batteries. The actual application form of the energy storage device 440 provided in this application embodiment may be, but is not limited to, the listed products, and may also be other application forms. This application embodiment does not strictly limit the application form of the energy storage device 440. This application embodiment only uses a multi-cell battery of the energy storage device 440 as an example for illustration.

[0047] Optionally, the individual battery cells constituting the energy storage device 440 can be, but are not limited to, at least one of cylindrical, prismatic, prismatic, or other shaped batteries.

[0048] Optionally, the energy storage device 440 may include, but is not limited to, energy storage applications such as energy storage power stations, hydropower / thermal / wind power generation systems, solar power generation systems, mobile power systems, smart home systems, or temporary power supply systems, and may also be applied in multiple fields such as data centers, military equipment, aerospace, charging piles, and electric vehicles.

[0049] Optionally, the energy storage device 440 may include battery modules, battery packs, battery clusters, mobile power supplies, energy storage cabinets / prefabricated energy storage compartments, and other battery integration systems composed of individual batteries. The actual application form of the energy storage device 440 provided in this application embodiment may be, but is not limited to, the listed products, and may also be other application forms. This application embodiment does not strictly limit the application form of the energy storage device 440.

[0050] Alternatively, the single cell is not limited to at least one of cylindrical, square, prismatic, or other shaped cells.

[0051] Optionally, the single cell can be a rechargeable battery, which refers to a single cell that can be recharged after discharge to activate the active materials and continue to be used. The single cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this application does not specifically limit it.

[0052] Understandably, all of the batteries include electrode sheets 300. The electrode sheet stripping device 100 provided in this application can strip the active material on the current collector surface of the electrode sheet 300. The electrode sheet stripping device 100 has a high stripping efficiency for stripping the active material on the current collector surface and can recover most of the active material, thus avoiding waste.

[0053] Please see Figure 4 and Figure 5This application provides an electrode stripping device 100 for stripping active material from the surface of a current collector. The electrode stripping device 100 includes a frame, a conveying mechanism 110, a recovery tank 120, and a spraying mechanism 130. The conveying mechanism 110 is disposed on the frame and includes a first mounting assembly 111, a second mounting assembly 112, a first mesh belt 113, and a second mesh belt 114. The first mesh belt 113 is wound around the outside of the first mounting assembly 111, and the second mesh belt 114 is wound around the outside of the first mounting assembly 111. On the outer side of the second mounting assembly 112, the first mesh strip 113 and the second mesh strip 114 are at least partially disposed opposite each other, and the first mesh strip 113 and the second mesh strip 114 cooperate to clamp the electrode 300; the recovery tank 120 is provided with a first fluid, and the first mesh strip 113 and the second mesh strip 114 are at least partially immersed in the first fluid, and the first fluid is used to heat the electrode 300; the spraying mechanism 130 is disposed on the frame and is used to spray a second fluid toward the electrode 300.

[0054] Understandably, the electrode 300 includes a current collector and an active material layer, the active material layer being disposed on at least one surface of the current collector, the active material layer including an active material and an adhesive, the adhesive being used to bond the active material; in some embodiments, the number of active material layers is one, the active material layer being disposed on the surface of the current collector; in other embodiments, the number of active material layers is two, the two active material layers being disposed on two opposite surfaces of the current collector.

[0055] Understandably, there is a clamping space between the first mesh strip 113 and the second mesh strip 114, the clamping space being used to clamp the electrode 300.

[0056] Understandably, when the conveying mechanism 110 is used to convey the electrode 300, the rotation directions of the first mesh strip 113 and the second mesh strip 114 are opposite. Specifically, in some embodiments, the rotation direction of the first mesh strip 113 is clockwise and the rotation direction of the second mesh strip 114 is counterclockwise; in other embodiments, the rotation direction of the first mesh strip 113 is counterclockwise and the rotation direction of the second mesh strip 114 is clockwise.

[0057] Optionally, the first fluid and the second fluid may be, but are not limited to, water.

[0058] Understandably, the second fluid can be drawn from the first fluid or from other water sources separately.

[0059] Understandably, the spraying mechanism 130 is disposed in the transport direction of the conveying mechanism 110. In the terminology of this application, the transport direction of the conveying mechanism 110 is the travel direction of the electrode 300.

[0060] Understandably, in Figure 5 In the embodiment, "113 / 114" indicates the first mesh belt 113 or the second mesh belt 114, and "1111 / 1121" indicates the first support roller 1111 or the second support roller 1121. It should be understood that when "113 / 114" indicates the first mesh belt 113, "1111 / 1121" indicates the first support roller 1111; when "113 / 114" indicates the second mesh belt 114, "1111 / 1121" indicates the second support roller 1121. That is, the first mesh belt 113 is set to correspond to the first support roller 1111, and the second mesh belt 114 is set to correspond to the second support roller 1121.

[0061] Understandably, the spraying mechanism 130 is used to spray a second fluid toward the electrode 300 so that the second fluid falls onto the electrode 300 in the form of a mist, rain or stream.

[0062] In the electrode stripping device 100 provided in this embodiment, the first mesh belt 113 is wrapped around the outside of the first mounting component 111, and the second mesh belt 114 is wrapped around the outside of the second mounting component 112. The first mesh belt 113 and the second mesh belt 114 are at least partially opposite to each other. The first mesh belt 113 and the second mesh belt 114 cooperate to clamp the electrode 300. When the first mesh belt 113 and the second mesh belt 114 rotate synchronously, the electrode 300 can be stably conveyed by friction, providing continuous and accurate material transfer guarantee for the subsequent stripping process. Specifically, during the process of the electrode peeling device 100 peeling the electrode 300, on the one hand, the electrode 300 is sandwiched between the first mesh belt 113 and the second mesh belt 114. Through the clamping and cooperation of the first mesh belt 113 and the second mesh belt 114, pleated structures are pressed out on the two opposite surfaces of the electrode 300. When the spraying mechanism 130 sprays the second fluid onto the electrode 300, the pleated structure can increase the contact area between the active material layer and the second fluid, and the pleated structure will further enhance the impact of the second fluid on the active material, making it easier for the active material on the current collector to fall off, thereby improving the efficiency of the electrode peeling device 100 in peeling the active material on the surface of the current collector. On the other hand, when the electrode 300 enters the recycling tank 120 along with the first mesh band 113 and the second mesh band 114, the electrode 300 will be immersed in the first fluid. The first fluid can heat the electrode 300 to uniformly transfer the heat of the first fluid to the interior of the active material layer on the surface of the current collector. The heat of the first fluid can intensify the thermal motion of the binder molecules in the active material layer, weaken the intermolecular forces, and transform the binder molecules from a tightly packed rigid solid to a slightly deformable softened state. This process achieves uniform softening of the active material layer as a whole, effectively weakening the adhesion strength between the active material and the current collector, preparing for efficient peeling of the active material from the current collector. On the other hand, when the electrode 300 approaches the spray mechanism 130 under the conveying of the first mesh belt 113 and the second mesh belt 114, the spray mechanism 130 precisely sprays a second fluid toward the electrode 300. The second fluid acts on the active material layer on the surface of the current collector through impact force, thereby breaking the adhesive interface between the active material layer and the current collector, achieving efficient separation of the active material on the current collector. The active material peeled off from the current collector falls to the bottom of the recovery tank 120 under the action of gravity, while the current collector continues to move under the continuous conveying of the first mesh belt 113 and the second mesh belt 114, thereby achieving complete separation of the current collector from the active material.The electrode stripping device 100 provided in this application has a smooth and highly automated stripping process, which makes the electrode stripping device 100 have a high stripping efficiency on the surface of the current collector and can recover most of the active material, thus avoiding waste.

[0063] Optionally, the materials of the first mesh strip 113 and the second mesh strip 114 may be selected from at least one of poly(p-phenylene terephthalamide), polyurethane, etc., so that the first mesh strip 113 and the second mesh strip 114 have better structural strength. When the material of the first mesh strip 113 and / or the second mesh strip 114 is selected from poly(p-phenylene terephthalamide), its peeling effect on the electrode 300 is slightly worse, but its service life is longer. When the material of the first mesh strip 113 and / or the second mesh strip 114 is selected from polyurethane, it is easier to form the pleated structure on the surface of the electrode 300 to improve the peeling effect, but it is easy to damage the current collector. Optionally, the first mesh strip 113 is provided with a plurality of first mesh holes arranged in an array, the radial dimension of the first mesh holes ranging from 4mm to 6mm. In a specific embodiment, the size of the first mesh hole is 6mm × 6mm, that is, the first mesh hole is square and the side length of the first mesh hole is 6mm.

[0064] Optionally, the second mesh strip 114 is provided with a plurality of second mesh holes arranged in an array, the radial dimension of the second mesh holes ranging from 4mm to 6mm. In a specific embodiment, the size of the second mesh hole is 6mm × 6mm, that is, the second mesh hole is square and the side length of the second mesh hole is 6mm.

[0065] Please see also Figures 4 to 6 In some embodiments, along the conveying path of the conveying mechanism 110, the recycling tank 120 includes a first sub-tank 121, a second sub-tank 122, and a third sub-tank 123 arranged sequentially. The temperature of the first fluid in the second sub-tank 122 is higher than the temperature of the first fluid in the first sub-tank 121, and the temperature of the first fluid in the second sub-tank 122 is higher than the temperature of the first fluid in the third sub-tank 123. The first sub-tank 121 is used to preheat the electrode 300, and the first mesh belt 113, the second mesh belt 114, and the electrode 300 are all immersed in the first fluid in the first sub-tank 121. The spraying mechanism 130 includes a spraying unit 131, which is arranged corresponding to the second sub-tank 122 and above the conveying path of the conveying mechanism 110, for spraying a second fluid toward the electrode 300. The first fluid in the third sub-tank 123 is used to rinse the collecting fluid.

[0066] Understandably, the spray unit 131 is disposed above the second sub-tank 122; in other words, the spray unit 131 is outside the recycling tank 120.

[0067] In the electrode peeling device 100 provided in this embodiment, the electrode 300 enters the first sub-groove 121, the second sub-groove 122, and the third sub-groove 123 sequentially under the influence of the first mesh belt 113 and the second mesh belt 114. Specifically, when the electrode 300 enters the first sub-groove 121, the first mesh belt 113, the second mesh belt 114, and the electrode 300 are all immersed in a first fluid within the first sub-groove 121. The first fluid can heat the electrode 300, thereby uniformly transferring the heat of the first fluid to the active material layer on the surface of the current collector. The adhesive molecules change from a tightly packed rigid solid to a slightly deformable softened state. This process achieves overall uniform softening of the active material layer, effectively weakening the adhesion strength between the active material and the current collector, thus preparing for efficient peeling of the active material from the current collector. Furthermore, the electrode 300 enters the second sub-slot 122. The spray unit 131 is arranged above the conveying path of the conveying mechanism 110 to precisely spray a second fluid toward the electrode 300. The second fluid acts on the active material layer on the surface of the current collector through impact force, thereby breaking the adhesive interface between the active material layer and the current collector and achieving efficient separation of the active material on the current collector. Further still, the electrode 300 enters the third sub-slot 123. The first fluid in the third sub-slot 123 is used to rinse the current collector to clean the active material adhering to its surface. When the electrode 300 exits the third sub-slot 123, the amount of active material entrained in the current collector is minimized, thus avoiding a reduction in the recovery rate of the active material.

[0068] In some embodiments, the spray unit 131 is disposed above the second sub-slot 122; the spray unit 131 includes a spray nozzle 1311, which is used to spray a second fluid toward the electrode 300, and the spray direction of the second fluid is set at an acute angle to the surface of the electrode 300.

[0069] Understandably, the spray nozzle 1311 is positioned above the liquid surface of the recovery tank 120.

[0070] In this embodiment, after being preheated in the first sub-tank 121, the electrode 300 enters the second sub-tank 122 under the clamping and conveying of the first mesh belt 113 and the second mesh belt 114. In the second sub-tank 122, the electrode 300 undergoes a first penetration above the surface of the first fluid, followed by immersion in the first fluid again, a second penetration above the surface, and a renewed immersion in the first fluid. It is then conveyed to the third sub-tank 123 by the first mesh belt 113 and the second mesh belt 114. During the process of the electrode 300 penetrating the surface of the first fluid, the spray nozzle 1311 is positioned corresponding to the electrode 300. The second fluid is sprayed at an acute angle to the surface of the electrode 300, so that the second fluid sprayed by the spray nozzle 1311 can form a water wedge effect at the edge gap between the current collector and the active material layer, thereby pushing the active material layer to lift up relative to the current collector, forming a peeling breakthrough, and thus significantly improving the subsequent peeling efficiency of the active material from the current collector.

[0071] Please see also Figure 7 In some embodiments, the angle α between the jet direction of the second fluid ejected by the spray nozzle 1311 and the surface of the electrode 300 is in the range of 20°≤α≤35°.

[0072] Specifically, the angle α between the spray direction of the second fluid ejected by the spray nozzle 1311 and the surface of the electrode 300 can be, but is not limited to, 20°, 22°, 23°, 24°, 26°, 28°, 30°, 31°, 32°, 33°, 34° and 35°.

[0073] In this embodiment, when the angle α between the spray direction of the second fluid ejected by the spray nozzle 1311 and the surface of the electrode 300 satisfies the range of 20°≤α≤35°, the angle α between the spray direction of the second fluid ejected by the spray nozzle 1311 and the surface of the electrode 300 is within a reasonable range. The impact force of the second fluid ejected by the spray nozzle 1311 on the electrode 300 forms a combined effect of lateral shear force and positive pressure. The second fluid can more easily penetrate into the interface gap between the current collector and the active material layer, enhancing the water wedge effect to achieve effective roll-up of the active material layer, while avoiding excessive impact force on the current collector, which could lead to deformation or damage to the current collector, thus improving the overall peeling efficiency and peeling thoroughness. When the angle α between the jet direction of the second fluid ejected by the spray nozzle 1311 and the surface of the electrode 300 is too large, the second fluid ejected by the spray nozzle 1311 directly impacts the electrode 300. This may cause deformation or damage to the current collector due to excessively concentrated impact force, thereby reducing the recycling value of the current collector and decreasing the performance of the electrode stripping device 100. When the angle α between the jet direction of the second fluid ejected by the spray nozzle 1311 and the surface of the electrode 300 is too small, the impact force of the second fluid ejected by the spray nozzle 1311 on the electrode 300 may slide along the surface of the electrode 300. The second fluid may have difficulty entering the interface gap between the current collector and the active material layer, weakening the wedge effect. This makes it difficult to push the active material layer up relative to the current collector, reducing the stripping efficiency of the active material on the current collector.

[0074] In some embodiments, the spray pressure P1 of the spray nozzle 1311 is in the range of 0.1MPa≤P1≤0.3MPa.

[0075] Specifically, the spray pressure P1 of the spray nozzle 1311 can be, but is not limited to, 0.1MPa, 0.12MPa, 0.13MPa, 0.15MPa, 0.16MPa, 0.18MPa, 0.2MPa, 0.21MPa, 0.22MPa, 0.23MPa, 0.24MPa, 0.26MPa, 0.28MPa, and 0.3MPa.

[0076] In this embodiment, when the spray pressure P1 of the spray nozzle 1311 is within the range of 0.1MPa≤P1≤0.3MPa, the spray pressure of the spray nozzle 1311 is within a reasonable range, and the impact force of the second fluid sprayed by the spray nozzle 1311 on the electrode 300 is within a reasonable range. On the one hand, this allows the second fluid to penetrate between the current collector and the active material layer, enhancing the water wedge effect, so that the active material layer can be effectively rolled up, improving the efficiency and thoroughness of the active material being peeled off from the current collector. On the other hand, it avoids excessive impact force on the current collector, thus preventing damage to the current collector, ensuring the recycling value of the current collector, and improving the performance of the electrode peeling device 100. When the spray pressure P1 of the spray nozzle 1311 is too high, the impact force of the second fluid sprayed by the spray nozzle 1311 on the electrode 300 is too great, which may cause deformation or damage to the current collector, or cause excessive pulverization of the active material, which is not conducive to subsequent recycling. When the spray pressure P1 of the spray nozzle 1311 is too low, the impact force of the second fluid sprayed from the spray nozzle 1311 on the electrode 300 is too small, and the second fluid is difficult to penetrate between the current collector and the active material layer, making it difficult for the active material layer to be effectively rolled up, thus reducing the efficiency and thoroughness of peeling the active material from the current collector.

[0077] Optionally, the electrode stripping device 100 includes a control mechanism (not shown in the figure). The control mechanism can regulate the spray pressure of the spray nozzle 1311 to flexibly adjust the spray pressure according to the type of electrode 300. It can also adjust the spray pressure in real time according to the dynamic changes in the stripping process, so as to ensure that the impact effect of the second fluid sprayed by the spray nozzle 1311 is stable while avoiding damage to the collector, thereby improving the stripping efficiency of the electrode stripping device 100 and the reliability of equipment operation.

[0078] Understandably, the control mechanism controls the spray pressure of the spray head 1311 by installing a first electronic pressure gauge and a first pump body on the air source pipeline that delivers the second fluid to the spray head 1311, and the control mechanism is electrically connected to the first electronic pressure gauge and the first pump body to adjust the spray pressure of the spray head 1311.

[0079] In some embodiments, the spray unit 131 further includes a flushing nozzle 1312. The spray nozzle 1311 and the flushing nozzle 1312 are arranged sequentially along the conveying path of the conveying mechanism 110. The flushing nozzle 1312 is used to spray a second fluid toward the electrode 300. The angle β between the spraying direction of the second fluid sprayed by the flushing nozzle 1312 and the surface of the electrode 300 is in the range of 85°≤β≤95°.

[0080] Optionally, when the angle β between the jet direction of the second fluid ejected by the rinsing nozzle 1312 and the surface of the electrode 300 is 90°, the jet direction of the second fluid ejected by the rinsing nozzle 1312 and the surface of the electrode 300 are set at a right angle.

[0081] Understandably, the angle between the jet direction of the second fluid ejected by the flushing nozzle 1312 and the surface of the electrode 300 is a right angle or close to a right angle.

[0082] Specifically, the angle β between the jet direction of the second fluid ejected by the flushing nozzle 1312 and the surface of the electrode 300 can be, but is not limited to, 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94° and 95°.

[0083] In this embodiment, the spray unit 131 further includes a flushing nozzle 1312. Along the conveying path of the conveying mechanism 110, the spray nozzle 1311 and the flushing nozzle 1312 are arranged sequentially. The flushing nozzle 1312 is used to spray a second fluid toward the electrode 300. The sprayed second fluid can generate significant kinetic energy and shear force to precisely act on the surface of the electrode 300. Specifically, for large sheets of active material that have peeled off and curled from the surface of the current collector, strong kinetic energy impact and high shear force cutting are used to quickly and thoroughly wash them off the surface of the current collector, causing these active materials to pass through the first mesh belt 113 or the second mesh belt 114 and efficiently fall into the recovery tank 120 for collection. In this embodiment, the angle β between the jet direction of the second fluid ejected by the rinsing nozzle 1312 and the surface of the electrode 300 is in the range of 85°≤β≤95°. This ensures that the angle between the jet direction of the second fluid ejected by the rinsing nozzle 1312 and the surface of the electrode 300 is a right angle or close to a right angle. This avoids the loss of kinetic energy of the second fluid by sliding along the surface of the electrode 300, and ensures that the kinetic energy and shear force of the second fluid can be concentrated on the peeled and rolled active material. In other words, when the second fluid acts on the surface of the electrode 300, the second fluid can form maximum kinetic energy and shear force, which greatly improves the peeling efficiency of the active material.

[0084] In some embodiments, the spray pressure P2 of the flushing nozzle 1312 is in the range of 0.4MPa≤P2≤0.7MPa.

[0085] Specifically, the spray pressure P2 of the flushing nozzle 1312 can be, but is not limited to, 0.4MPa, 0.42MPa, 0.45MPa, 0.48MPa, 0.5MPa, 0.52MPa, 0.53MPa, 0.55MPa, 0.6MPa, 0.62MPa, 0.63MPa, 0.65MPa, 0.68MPa, and 0.7MPa.

[0086] In this embodiment, when the spray pressure P2 of the flushing nozzle 1312 meets the range of 0.4MPa≤P2≤0.7MPa, the spray pressure of the flushing nozzle 1312 is within a reasonable range, and the impact force of the second fluid ejected by the flushing nozzle 1312 on the electrode 300 is within a reasonable range. On the one hand, this allows the second fluid to generate greater impact kinetic energy and shear force to impact the large pieces of active material that have been peeled off and rolled up on the surface of the current collector, causing the active material to fall off the current collector and into the recycling tank 120, thereby improving the efficiency of peeling the active material off the current collector. On the other hand, it avoids excessive impact force on the current collector due to excessive spray pressure of the flushing nozzle 1312, thus avoiding damage to the current collector, ensuring the recycling value of the current collector, and improving the performance of the electrode peeling device 100. When the spray pressure P2 of the flushing nozzle 1312 is too high, the impact force of the second fluid ejected from the flushing nozzle 1312 on the electrode 300 is too great, which may cause deformation or damage to the current collector, or lead to excessive pulverization of the active material, which is not conducive to subsequent recycling. When the spray pressure P2 of the flushing nozzle 1312 is too low, the second fluid ejected from the flushing nozzle 1312 is insufficient to disperse the active material layer that has been curled and peeled off the surface of the current collector, making it difficult to peel off large pieces of active material structure from the current collector, thus reducing the peeling efficiency.

[0087] Optionally, the control mechanism can adjust the spray pressure of the flushing nozzle 1312 to flexibly adjust the spray pressure according to the type of electrode 300, or adjust the spray pressure in real time according to the dynamic changes in the peeling process, so as to ensure that the impact effect of the second fluid sprayed by the flushing nozzle 1312 is stable, while avoiding damage to the collector, thereby improving the peeling efficiency of the electrode peeling device 100 and the reliability of equipment operation.

[0088] Understandably, the control mechanism controls the spray pressure of the flushing nozzle 1312 by installing a second electronic pressure gauge and a second pump body on the air source pipeline that delivers the second fluid to the flushing nozzle 1312, and the control mechanism is electrically connected to the second electronic pressure gauge and the second pump body to adjust the spray pressure of the flushing nozzle 1312.

[0089] Optionally, in the spray unit 131, the number of the rinsing nozzles 1312 is at least one. When the number of rinsing nozzles 1312 is multiple, the multiple rinsing nozzles 1312 cooperate with each other to simultaneously rinse different areas on the electrode 300, which helps to improve the peeling efficiency of the electrode peeling device 100.

[0090] Understandably, in the terminology of this application, "at least one" means one or more, and "more than one" means two or more.

[0091] In some embodiments, the spraying mechanism 130 further includes a support plate 230, which is located on opposite sides of the electrode 300 and the rinsing nozzle 1312. The support plate 230 is spaced apart from the electrode 300. When the rinsing nozzle 1312 rinses the electrode 300, the support plate 230 is used to support the electrode 300.

[0092] In this embodiment, when the flushing nozzle 1312 sprays the second fluid toward the electrode 300 at a near right angle, the second fluid exerts a strong impact force on the electrode 300. In this embodiment, by positioning the support plate 230 and the flushing nozzle 1312 on opposite sides of the electrode 300, when the second fluid flushes the first mesh strip 113 or the second mesh strip 114 and causes the first mesh strip 113 or the second mesh strip 114 to collapse toward the side closer to the support plate 230, the support plate 230 can support the electrode 300 to prevent deformation of the first mesh strip 113 or the second mesh strip 114. This avoids weakening the impact effect of the second fluid on the electrode 300 due to deformation of the first mesh strip 113 or the second mesh strip 114, ensuring the impact and peeling effect of the second fluid sprayed by the flushing nozzle 1312 on the electrode 300, and guaranteeing the peeling efficiency of the electrode peeling device 100.

[0093] Please see also Figure 8 Optionally, the support plate 230 also has at least one through hole 231, so that the active material flushed onto the support plate 230 can fall to the bottom of the recycling tank 120 through the through hole 231, thereby improving the recovery rate of the active material.

[0094] In some embodiments, the number of spray units 131 is two sets, and the two sets of spray units 131 are arranged at intervals along the conveying path of the conveying mechanism 110, and the two sets of spray units 131 are respectively arranged on opposite sides of the electrode 300.

[0095] In this embodiment, when the electrode 300 passes through the second sub-slot 122 under the transmission of the first mesh belt 113 and the second mesh belt 114, the electrode 300 will complete the first time to pass through the first fluid liquid surface and be exposed above the liquid surface, and then be immersed in the first fluid again. It will then pass through the first fluid liquid surface and be exposed above the liquid surface a second time, and then enter the circulation and wetting process of the first fluid again. Subsequently, it will be transmitted to the third sub-slot 123 by the first mesh belt 113 and the second mesh belt 114. Specifically, there are two sets of spray units 131. When the electrode 300 first emerges from the first fluid surface and is exposed above the liquid surface, one set of spray units 131 is disposed on one side of the electrode 300 to peel off the active material on one surface of the current collector. When the electrode 300 emerges from the first fluid surface and is exposed above the liquid surface for the second time, another set of spray units 131 is disposed on the other side of the electrode 300 to peel off the active material on the other surface of the current collector. This achieves efficient and synchronous peeling of the active material on the two opposite surfaces of the current collector, improves the peeling efficiency of the active material attached to the surface of the current collector, and enhances the performance of the electrode peeling device 100.

[0096] In some embodiments, the electrode stripping device 100 further includes a nozzle mechanism 132, which is spaced apart from the spray unit 131. The nozzle mechanism 132 includes at least two nozzles 1321, both of which are immersed in the first fluid. The nozzles 1321 are used to spray gas toward the electrode 300. At least one nozzle 1321 is located on one side of the electrode 300, and at least one nozzle 1321 is located on the other side of the electrode 300.

[0097] Understandably, the nozzle 1321 is used to spray gas, which is compressed air that has been degreased and dehumidified, in order to avoid contaminating the electrode 300.

[0098] In this embodiment, the air nozzle mechanism 132 includes at least two air nozzles 1321, both of which are immersed in the first fluid. The air nozzles 1321 are used to spray gas toward the electrode 300. The gas sprayed by the air nozzles 1321 can form a large water wave in the first fluid. When the water wave agitates the surface of the electrode 300, it can damage the active material layer on the surface of the current collector and cause it to fall off locally. Furthermore, at least one of the air nozzles 1321 is located on one side of the electrode 300, and at least one of the air nozzles 1321 is located on the other side of the electrode 300. Firstly, the air nozzles 1321 located on opposite sides of the electrode 300 can create bidirectional convection disturbance around the electrode 300, causing the first fluid to form local turbulence. This can both wash away fine active material particles remaining on the surface of the current collector and penetrate into the interface gap between the current collector and the active material layer, further weakening the adhesion strength between the two. This synergizes with the impact peeling of the spray unit 131, improving the thoroughness of peeling. Secondly, the air nozzles 1321 located on both sides of the electrode 300 form a symmetrical airflow effect, generating a balanced lateral support force. This prevents the electrode 300 from shifting or tilting in the first fluid due to water flow impact or its own gravity, ensuring that the electrode 300 is smoothly conveyed along a preset path and guaranteeing the precise action of subsequent spraying and rinsing processes.

[0099] Optionally, the airflow pressure P3 of the air nozzle 1321 is in the range of 0.05MPa≤P3≤0.3MPa, so that the airflow pressure of the air nozzle 1321 is within a reasonable range. On the one hand, this ensures that the impact on the first fluid is within a reasonable range. Specifically, when the water wave formed in the first fluid impacts the current collector, it can effectively damage and partially detach the active material layer on the surface of the current collector, improving the peeling effect on the active material on the current collector. On the other hand, it avoids excessive impact force on the first fluid, which could cause excessive water wave fluctuations, thereby reducing the stability of the electrode 300 in the recycling tank 120 and reducing the performance of the electrode peeling device 100.

[0100] Optionally, the control mechanism can regulate the airflow pressure of the air nozzle 1321 to flexibly adjust the airflow pressure according to the type of electrode 300, and can also adjust the airflow pressure in real time according to the dynamic changes in the peeling process, so as to ensure that the impact effect of the gas ejected by the air nozzle 1321 is stable, while avoiding damage to the current collector, thereby improving the peeling efficiency of the electrode peeling device 100 and the reliability of equipment operation.

[0101] Understandably, the control mechanism controls the airflow pressure of the nozzle 1321 by installing a third electronic pressure gauge and a pressure regulating valve on the gas source pipeline that supplies gas to the nozzle 1321, and electrically connecting the third electronic pressure gauge and the pressure regulating valve to regulate the airflow pressure of the nozzle 1321.

[0102] Optionally, in some embodiments, the air nozzle mechanism 132 is disposed at the junction of the first sub-groove 121 and the second sub-groove 122, and the air nozzle mechanism 132 is also disposed within the second sub-groove 122, to impact the electrode 300, thereby damaging and partially detaching the active material layer on the surface of the current collector. In other embodiments, the air nozzle mechanism 132 is also disposed in the third sub-groove 123, to impact and rinse the current collector, washing away the active material remaining on the surface of the current collector, thereby improving the recovery rate of the active material.

[0103] In some embodiments, along the arrangement direction of the first sub-slot 121, the second sub-slot 122 and the third sub-slot 123, the ratio A1 of the length of the first sub-slot 121 to the length of the second sub-slot 122 is in the range of 0.95≤A1≤1.05.

[0104] Specifically, the value of A1, which is the ratio of the length of the first sub-slot 121 to the length of the second sub-slot 122, can be, but is not limited to, 0.95, 0.96, 0.97, 0.98, 0.99, 1, 1.01, 1.02, 1.03, 1.04, and 1.05.

[0105] In this embodiment, when the ratio A1 of the length of the first sub-slot 121 to the length of the second sub-slot 122 satisfies the range of 0.95≤A1≤1.05 along the arrangement direction of the first sub-slot 121, the second sub-slot 122, and the third sub-slot 123, the lengths of both the first sub-slot 121 and the second sub-slot 122 are within a reasonable range. Correspondingly, when the rotation speeds of the first mesh belt 113 and the second mesh belt 114 are constant, it can be ensured that the transmission time of the electrode 300 in the first sub-slot 121 and the second sub-slot 122 is also within a reasonable range. Specifically, when the electrode 300 flows through the first sub-slot 121, the first fluid in the first sub-slot 121 softens the adhesive of the active material layer, preparing it for the subsequent peeling process; when the electrode 300 flows through the second sub-slot 122, the active material layer on the current collector is effectively peeled off with the cooperation of the spray unit 131 and the air nozzle mechanism 132. The lengths of the first sub-groove 121 and the second sub-groove 122 are equal or similar, which allows for a more regular arrangement of the recycling grooves 120. This reduces space waste while ensuring effective preheating and stripping of the electrode 300, preventing insufficient preheating due to the first sub-groove 121 being too short, and insufficient stripping due to the second sub-groove 122 being too short. This ensures the effective stripping of the active material from the current collector by the electrode stripping device 100. When the ratio A1 of the length of the first sub-groove 121 to the length of the second sub-groove 122 is too large, the length of the first sub-groove 121 is too long or the length of the second sub-groove 122 is too short. If the length of the first sub-groove 121 is too long, it may increase the size of the electrode stripping device 100, which is not conducive to the miniaturization design of the electrode stripping device 100. If the length of the second sub-groove 122 is too short, then with a constant rotation speed of the first mesh belt 113 and the second mesh belt 114, the electrode 300 will spend too little time passing through the second sub-groove 122, which may result in insufficient peeling of the electrode 300, reducing the peeling efficiency of the active material on the current collector and the recovery rate. When the ratio A1 of the length of the first sub-groove 121 to the length of the second sub-groove 122 is too small, the length of the first sub-groove 121 is too short or the length of the second sub-groove 122 is too long. If the length of the first sub-groove 121 is too short, then with a constant rotation speed of the first mesh belt 113 and the second mesh belt 114, the electrode 300 will spend too little time passing through the first sub-groove 121, which may result in insufficient preheating of the electrode 300. It may be difficult to ensure that there is sufficient time in the preheating stage for heat to penetrate evenly into the active material layer and fully soften the adhesive, thereby potentially affecting the final peeling effect.If the length of the second sub-groove 122 is too long, it may increase the size of the electrode stripping device 100, which is not conducive to the miniaturization design of the electrode stripping device 100.

[0106] Preferably, the length of the first sub-slot 121 is equal to the length of the second sub-slot 122.

[0107] Optionally, in some embodiments, the length of the recycling tank 120 is between 4m and 6m along the arrangement direction of the first sub-tank 121, the second sub-tank 122 and the third sub-tank 123, so as to ensure the completion of the preheating process, the stripping process and the rinsing process of the electrode 300, and to ensure a high stripping efficiency and recovery rate of the active material on the current collector.

[0108] Optionally, the recycling tank 120 can be divided into a first sub-tank 121, a second sub-tank 122, and a third sub-tank 123 by providing two overflow weirs in the recycling tank 120.

[0109] Optionally, in some embodiments, the depth of the recycling tank 120 is 500mm to 800mm to ensure the completion of the preheating, stripping and rinsing processes of the electrode 300, and to ensure a high stripping efficiency and recovery rate of the active material on the current collector.

[0110] In some embodiments, along the arrangement direction of the first sub-slot 121, the second sub-slot 122 and the third sub-slot 123, the ratio A2 of the length of the second sub-slot 122 to the length of the third sub-slot 123 is in the range of 1.8≤A2≤2.3.

[0111] Specifically, the value of A2, which is the ratio of the length of the second sub-slot 122 to the length of the third sub-slot 123, can be, but is not limited to, 1.8, 1.82, 1.85, 1.88, 1.9, 1.92, 1.93, 1.95, 1.98, 2, 2.01, 2.03, 2.05, 2.08, 2.1, 2.12, 2.15, 2.17, 2.19, 2.2, 2.23, 2.25, 2.28, and 2.3.

[0112] In this embodiment, along the arrangement direction of the first sub-slot 121, the second sub-slot 122, and the third sub-slot 123, when the ratio A2 of the length of the second sub-slot 122 to the length of the third sub-slot 123 satisfies the range 1.8 ≤ A2 ≤ 2.3, the lengths of both the second sub-slot 122 and the third sub-slot 123 are within a reasonable range. Correspondingly, with a constant rotation speed of the first mesh belt 113 and the second mesh belt 114, the transmission time of the electrode 300 through the second sub-slot 122 and the third sub-slot 123 can be ensured to be within a reasonable range. Specifically, when the electrode 300 flows through the second sub-slot 122, the active material layer on the current collector is effectively peeled off with the cooperation of the spray unit 131 and the air nozzle mechanism 132. When the electrode 300 flows through the third sub-groove 123, with the cooperation of the air nozzle mechanism 132, the active material attached to the current collector can be effectively rinsed, so as to avoid the current collector carrying away too much active material when it comes out of the third sub-groove 123, which would reduce the recovery rate of the active material. The length of the second sub-groove 122 is greater than the length of the third sub-groove 123, which makes the arrangement of the recovery grooves 120 more regular. While reducing space waste, it ensures the peeling effect on the electrode 300, so as to avoid insufficient peeling due to the length of the second sub-groove 122 being too short, thus ensuring the peeling effect of the electrode peeling device 100 on the active material on the current collector. When the ratio A2 of the length of the second sub-groove 122 to the length of the third sub-groove 123 is too large, the length of the second sub-groove 122 is too long or the length of the third sub-groove 123 is too short. If the length of the third sub-groove 123 is too short, then with a constant rotation speed of the first mesh belt 113 and the second mesh belt 114, the time the electrode 300 spends in the third sub-groove 123 is too short, which may result in insufficient rinsing of the electrode 300. When the electrode 300 detaches from the third sub-groove 123, it may carry away too much active material, reducing the recovery rate of the active material on the current collector. When the ratio A2 of the length of the second sub-groove 122 to the length of the third sub-groove 123 is too small, the length of the second sub-groove 122 is too short or the length of the third sub-groove 123 is too long. If the length of the third sub-groove 123 is too long, it may increase the size of the electrode stripping device 100, which is not conducive to the miniaturization design of the electrode stripping device 100.

[0113] In some embodiments, the bottoms of the first sub-slot 121, the second sub-slot 122, and the third sub-slot 123 are sequentially connected; the recycling tank 120 has a preset bottom wall 124, which is inclined relative to the horizontal direction along the arrangement direction of the first sub-slot 121, the second sub-slot 122, and the third sub-slot 123, so that the depth of the first sub-slot 121, the depth of the second sub-slot 122, and the depth of the third sub-slot 123 gradually increase.

[0114] In this embodiment, the bottom of the first sub-slot 121, the bottom of the second sub-slot 122, and the bottom of the third sub-slot 123 are connected in sequence. When the active material on the electrode 300 falls off the current collector, it can fall off under the action of gravity and concentrate on the preset bottom wall 124. Furthermore, along the arrangement direction of the first sub-groove 121, the second sub-groove 122, and the third sub-groove 123, the preset bottom wall 124 is inclined relative to the horizontal direction, so that the depth of the first sub-groove 121, the second sub-groove 122, and the third sub-groove 123 gradually increases. Thus, the preset bottom wall 124 has a certain slope. When the active material falls onto the preset bottom wall 124, the active material can gather towards the third sub-groove 123 with the greatest depth. This can prevent the active material from accumulating in the first sub-groove 121 and the second sub-groove 122, preventing it from re-attaching to the electrode 300 or clogging the first mesh belt 113 and / or the second mesh belt 114. At the same time, it is convenient to collect the material in the third sub-groove 123, reducing recycling losses and simplifying the recycling process, thereby improving the recovery rate of the active material.

[0115] In some embodiments, the electrode stripping device 100 further includes a collection pit 140, which is connected to the recycling tank 120 to collect active materials in the recycling tank 120.

[0116] In this embodiment, the collection pit 140 is connected to the recovery tank 120. Active material detached from the current collector gathers at the bottom of the third sub-tank 123 and then enters the collection pit 140. The collection pit 140 serves as a dedicated material collection area, allowing detached active material particles to settle and accumulate, eliminating the need for retrieval and cleaning from the entire recovery tank 120. Subsequently, active materials can be directly extracted or transported in batches from the collection pit 140, simplifying the separation and transfer process, reducing labor or equipment processing costs, and improving the performance of the electrode stripping device 100. Simultaneously, it prevents the active material from dispersing and accumulating in the recovery tank 120, further reducing recovery losses due to active material residue and scattering. It also prevents active material from clogging the recovery tank 120, thus improving the recovery rate of the active material.

[0117] In some embodiments, the electrode stripping device 100 further includes a transport mechanism 150 and a storage mechanism 160. The transport mechanism 150 is at least partially disposed within the collection pit 140 and transports the collected active material to the storage mechanism 160, which is used to store the active material.

[0118] In this embodiment, the transport mechanism 150 is at least partially disposed within the collection pit 140. When active material detached from the current collector accumulates in the collection pit 140, the transport mechanism 150 can transport the active material from the collection pit 140 to the storage mechanism 160 and store the active material there. By providing the transport mechanism 150 and the storage mechanism 160, this embodiment enables the autonomous recovery and storage of active material stripped from the electrode 300, reducing labor costs and thus improving the performance of the electrode stripping device 100.

[0119] Please see also Figure 9 In some embodiments, the transport mechanism 150 includes a collecting screw 151 and a discharging screw 152. The collecting screw 151 is disposed in the collecting pit 140, and the discharging screw 152 is connected to the collecting screw 151. The discharging screw 152 has a discharge port 1521, which is disposed corresponding to the storage mechanism 160. The collecting screw 151 is used to collect the active material in the collecting pit 140 to a side close to the discharging screw 152, and the discharging screw 152 is used to transport the active material in the collecting pit 140 to the storage mechanism 160.

[0120] In this embodiment, the collecting screw 151 is disposed in the collecting pit 140. When the active material that has fallen off from the current collector accumulates in the collecting pit 140, the collecting screw 151 is driven by a screw to push the active material located at the end of the collecting screw 151 away from the discharge screw 152 to the end of the collecting screw 151 close to the discharge screw 152. The collecting screw 151 can prevent the active material from being locally accumulated or remaining in the collecting pit 140. Furthermore, the discharge screw 152 rotates, and the discharge screw 152 receives the active material collected by the collecting screw 151, and carries the active material away from the collecting pit 140 and pushes it to the storage mechanism 160 through a screw drive. In this embodiment, the collecting screw 151 and the discharging screw 152 cooperate with each other to continuously collect and transfer the active material, avoiding the accumulation of the active material in the recycling tank 120 and causing water pollution, while also preventing the active material from clogging the outlet or inlet of the recycling tank 120, thus improving the performance of the electrode stripping device 100.

[0121] Optionally, in one specific embodiment, the solid content of the material transported from the discharge port 1521 is 60%, that is, 60% active material and 40% moisture.

[0122] Optionally, the outer periphery of the discharge screw 152 is also provided with a sleeve to prevent the active material from falling off while it is being conveyed.

[0123] Optionally, in some embodiments, the storage mechanism 160 includes a conveying component 161, a first storage pool 162, and a second storage pool 163. The conveying component 161 is disposed on one side of the conveying mechanism 110 and includes a first conveying roller 1611, a second conveying roller 1612, and a conveyor belt 1613. Along the arrangement direction of the conveying mechanism 110 and the conveying component 161, the first conveying roller 1611 and the second conveying roller 1612 are spaced apart, and the conveyor belt 1613 is arranged around the outer periphery of the first conveying roller 1611 and the second conveying roller 1612. The first storage pool 162 is disposed corresponding to the discharge port 1521 and is disposed near the first conveying roller 1611 for storing the active material. The second storage pool 163 is disposed near the second conveying roller 1612 for storing the current collector.

[0124] In this embodiment, when the discharge screw 152 carries the active material from the collection pit 140 away from the collection pit 140, the discharge port 1521 of the discharge screw 152 is configured to correspond to the first storage tank 162, so as to store the active material in the first storage tank 162. At the same time, when the electrode 300 is disengaged from the third sub-groove 123, the current collector is conveyed to the conveyor belt 1613. The conveyor belt 1613 is arranged around the outer periphery of the first conveyor roller 1611 and the second conveyor roller 1612. When the first conveyor roller 1611 and the second conveyor roller 1612 rotate, under the action of friction, the conveyor belt 1613 will be driven to rotate, thereby conveying the current collector to be close to and stored in the second storage tank 163, so as to complete the collection and transfer of the current collector.

[0125] Optionally, the electrode stripping device 100 further includes a vision detector 240, which is disposed above the conveyor belt 1613 and is used to detect the damage to the current collector. The control mechanism is electrically connected to the vision detector 240 and is used to adjust the spray pressure of the spray nozzle 1311, the spray pressure of the flushing nozzle 1312, and the spray pressure of the air nozzle 1321 according to the damage to the current collector.

[0126] In this embodiment, when the visual detector 240 detects damage to the current collector located on the conveyor belt 1613, the frequency of the pump, the spray pressure of the spray nozzle 1311, the spray pressure of the flushing nozzle 1312, and the spray pressure of the air nozzle 1321 can be adjusted to reduce the impact kinetic energy on the current collector during the subsequent peeling process, thereby achieving the integrity of the current collector and reducing the impact of debris generated by the damage to the current collector on the quality of the finished active material.

[0127] In some embodiments, the first mounting assembly 111 includes a plurality of first support rollers 1111 and a first tension roller 1112, the plurality of first support rollers 1111 and the first tension roller 1112 being spaced apart, the first mesh belt 113 being wound around the outer periphery of each of the first support rollers 1111 and the first tension roller 1112, and the first tension roller 1112 being used to adjust the tension of the first mesh belt 113.

[0128] In this embodiment, the plurality of first support rollers 1111 and the first tension rollers 1112 are spaced apart, and the first mesh belt 113 is wrapped around the outer periphery of each of the first support rollers 1111 and the first tension rollers 1112. The plurality of first support rollers 1111 can provide multi-point uniform support for the first mesh belt 113, preventing the first mesh belt 113 from sagging or shifting due to its own weight or the load of the clamping electrode 300 during the conveying process. When the plurality of first support rollers 1111 and the first tension rollers 1112 rotate, under the action of friction, the first mesh belt 113 can rotate relative to the plurality of first support rollers 1111 and the first tension rollers 1112, thereby driving the electrode 300 clamped between the first mesh belt 113 and the second mesh belt 114 to move, so as to realize the conveying of the electrode 300. Furthermore, the first tensioning roller 1112 can adjust the tension of the first mesh belt 113 in real time, which can prevent the first mesh belt 113 from becoming loose and slipping due to insufficient tension, thus affecting the conveying efficiency and clamping force of the electrode 300; and also prevent the first mesh belt 113 from being stretched and deformed due to excessive tension, thus extending the service life of the first mesh belt 113 and improving the performance of the conveying mechanism 110.

[0129] In some embodiments, the second mounting assembly 112 includes a plurality of second support rollers 1121 and second tension rollers 1122, the plurality of second support rollers 1121 and second tension rollers 1122 being spaced apart, the second mesh belt 114 being wound around the outer periphery of each of the second support rollers 1121 and second tension rollers 1122, and the second tension rollers 1122 being used to adjust the tension of the second mesh belt 114.

[0130] In this embodiment, the plurality of second support rollers 1121 and the second tension rollers 1122 are spaced apart, and the second mesh belt 114 is wrapped around the outer periphery of each of the second support rollers 1121 and the second tension rollers 1122. The plurality of second support rollers 1121 can provide multi-point uniform support for the second mesh belt 114, preventing the second mesh belt 114 from sagging or shifting due to its own weight or the load of the clamping electrode 300 during the conveying process. When the plurality of second support rollers 1121 and the second tension rollers 1122 rotate, under the action of friction, the second mesh belt 114 can rotate relative to the plurality of second support rollers 1121 and the second tension rollers 1122, thereby driving the electrode 300 clamped between the first mesh belt 113 and the second mesh belt 114 to move, so as to realize the conveying of the electrode 300. Furthermore, the second tensioning roller 1122 can adjust the tension of the second mesh belt 114 in real time, which can prevent the second mesh belt 114 from becoming loose and slipping due to insufficient tension, thus affecting the conveying efficiency and clamping force of the electrode 300; and also prevent the second mesh belt 114 from being stretched and deformed due to excessive tension, thus extending the service life of the second mesh belt 114 and improving the performance of the conveying mechanism 110.

[0131] Please see also Figure 10 In some embodiments, the electrode stripping device 100 further includes a first water supply mechanism 170, a second water supply mechanism 180, and a third water supply mechanism 190. The first water supply mechanism 170 delivers the first fluid to the first sub-tank 121, the second water supply mechanism 180 delivers the first fluid to the second sub-tank 122, and the third water supply mechanism 190 delivers the first fluid to the third sub-tank 123. The first water supply mechanism 170, the second water supply mechanism 180, and the third water supply mechanism 190 each include a water supply tank 191, a drive pump 192, and a heater 193. The recovery tank 120, the water supply tank 191, the drive pump 192, and the heater 193 are connected in sequence. The drive pump 192 is used to drive the flow of the first fluid in the water supply tank 191 and the recovery tank 120, and the heater 193 is used to heat the first fluid.

[0132] Understandably, the first sub-slot 121, the second sub-slot 122 and the third sub-slot 123 each have an independent water supply mechanism.

[0133] In this embodiment, the first water supply mechanism 170 delivers the first fluid to the first sub-tank 121, the second water supply mechanism 180 delivers the first fluid to the second sub-tank 122, and the third water supply mechanism 190 delivers the first fluid to the third sub-tank 123. This allows for independent circulation of the first fluid supply in the first sub-tank 121, the second sub-tank 122, and the third sub-tank 123. This facilitates independent adjustment of the temperature of the first fluid in the first sub-tank 121, the second sub-tank 122, and the third sub-tank 123, enabling differentiated design of the temperatures of the first fluid in the first sub-tank 121, the second sub-tank 122, and the third sub-tank 123. This avoids parameter conflicts caused by a single water supply and ensures optimal preheating, stripping, and rinsing effects for the electrode 300. Specifically, the first water supply mechanism 170, the second water supply mechanism 180, and the third water supply mechanism 190 each include a water supply tank 191, a drive pump 192, and a heater 193. The drive pump 192 can drive the first fluid to circulate between the water supply tank 191 and the recovery tank 120, improving thermal energy utilization and avoiding energy waste caused by direct discharge of the first fluid. The heater 193 is used to heat the first fluid, which can prevent excessive temperature fluctuations of the first fluid in the recovery tank 120, ensuring the preheating, stripping, and rinsing effects on the electrode 300.

[0134] Optionally, the temperature T1 of the first fluid in the first sub-slot 121 is in the range of 60℃≤T1≤70℃, so that the first fluid can heat the electrode 300, so that the heat of the first fluid can be uniformly transferred to the active material layer on the surface of the current collector. The adhesive molecules change from a tightly packed rigid solid to a slightly deformable softened state. This process achieves overall uniform softening of the active material layer, effectively weakening the adhesion strength between the active material and the current collector, and preparing for efficient peeling of the active material on the current collector.

[0135] Specifically, the temperature T1 of the first fluid in the first sub-tank 121 can be, but is not limited to, 60°C, 61°C, 62°C, 63°C, 64°C, 65°C, 66°C, 67°C, 68°C, 69°C, and 70°C.

[0136] Optionally, the temperature T2 of the first fluid in the second sub-tank 122 is in the range of 85℃≤T2≤90℃, so that even if the spray unit 131 removes some heat while peeling the electrode 300, the first fluid still maintains a high temperature, so that the adhesive in the active material layer can continue to dissolve, facilitating further separation of the active material and the adhesive.

[0137] Specifically, the temperature T2 of the first fluid in the second sub-tank 122 can be, but is not limited to, 85°C, 85.5°C, 86°C, 86.5°C, 87°C, 87.5°C, 88°C, 88.5°C, 89°C, 89.5°C, and 90°C.

[0138] Optionally, the temperature T3 of the first fluid in the third sub-slot 123 is in the range of 75℃≤T3≤80℃. The main function of the first fluid in the third sub-slot 123 is to rinse the surface of the current collector and cool down the current collector remaining after the electrode 300 is peeled off, so as to avoid the current collector from cooling down rapidly after being removed from the heat source and causing surface damage, thus ensuring the recycling value of the current collector.

[0139] Optionally, the electrode stripping device 100 further includes a first temperature sensor (not shown), a second temperature sensor (not shown), and a third temperature sensor (not shown). The first temperature sensor is disposed in the first sub-slot 121 to detect the temperature of the first fluid in the first sub-slot 121; the second temperature sensor is disposed in the second sub-slot 122 to detect the temperature of the first fluid in the second sub-slot 122; and the third temperature sensor is disposed in the third sub-slot 123 to detect the temperature of the first fluid in the third sub-slot 123. By setting the first temperature sensor, the second temperature sensor, and the third temperature sensor, the temperatures of the first sub-slot 121, the second sub-slot 122, and the third sub-slot 123 can be monitored in real time, respectively.

[0140] Optionally, the control mechanism is electrically connected to the heaters 193 of the first water supply mechanism 170, the second water supply mechanism 180, and the third water supply mechanism 190, respectively. The control mechanism is also electrically connected to the first temperature sensor, the second temperature sensor, and the third temperature sensor. Based on the temperature information detected by the first temperature sensor, the control mechanism controls the heating frequency of the heater 193 of the first water supply mechanism 170, thereby adjusting the temperature of the first fluid in the first sub-tank 121. Based on the temperature information detected by the second temperature sensor, the control mechanism controls the heating frequency of the heater 193 of the second water supply mechanism 180, thereby adjusting the temperature of the first fluid in the second sub-tank 122. Based on the temperature information detected by the third temperature sensor, the control mechanism controls the heating frequency of the heater 193 of the third water supply mechanism 190, thereby adjusting the temperature of the first fluid in the third sub-tank 123.

[0141] Optionally, the second water supply mechanism 180 further includes a filter 250, which is disposed in the connecting loop between the second sub-tank 122 and the water supply pool 191 to filter the active material carried out during the circulation process.

[0142] Optionally, the inlet of the third sub-tank 123 is located on the side of the third sub-tank 123 away from the second sub-tank 122, so that the flow direction of the first fluid in the third sub-tank 123 can be opposite to the conveying direction of the conveying mechanism 110, thereby improving the purity of the first fluid in the third sub-tank 123 and ensuring the rinsing effect on the collected fluid.

[0143] Optionally, the electrode stripping device 100 further includes a chemical oxygen demand (COD) analyzer (not shown) for detecting the amount of oxygen required for the oxidation of reducing substances such as organic matter in the water, so as to detect the purity of the first fluid in real time. The control mechanism is electrically connected to the COD analyzer to adjust the drive pump 192 of the first water supply mechanism 170, the drive pump 192 of the second water supply mechanism 180, and the drive pump 192 of the third water supply mechanism 190 according to the detected purity of the first fluid, so as to maintain the water balance of the first fluid in the recovery tank 120.

[0144] In some embodiments, the recovery tank 120 has an overflow plate 210 disposed on at least one side of the recovery tank 120 along a preset direction. The overflow plate 210 has an overflow channel (not shown) inside, which communicates with the recovery tank 120. When the liquid level of the first fluid in the recovery tank 120 reaches a preset value, the first fluid enters the overflow channel from the recovery tank 120. The preset direction intersects with the arrangement direction of the first sub-channel 121, the second sub-channel 122, and the third sub-channel 123, and also intersects with the direction of gravity. From the direction of the third sub-channel 123 toward the first sub-channel 121, the overflow plate 210 is inclined relative to the horizontal direction toward the bottom of the recovery tank 120, so that the flow direction of the first fluid in the overflow channel is away from the conveying path of the conveying mechanism 110.

[0145] Understandably, the preset direction is Figure 4 In the embodiments, the direction is perpendicular to the paper or points perpendicularly from the paper.

[0146] Optionally, in some embodiments, the number of overflow plates 210 is one, and one overflow plate 210 is disposed on one side of the recycling tank 120 along a preset direction; in other embodiments, the number of overflow plates 210 is two, and the two overflow plates 210 are respectively disposed on opposite sides of the recycling tank 120 along a preset direction.

[0147] Understandably, in the direction from the third sub-slot 123 to the first sub-slot 121, the overflow plate 210 is inclined towards the bottom of the recycling tank 120 relative to the horizontal direction. This can be because the height of the overflow plate 210 gradually decreases in the direction from the third sub-slot 123 to the first sub-slot 121.

[0148] In this embodiment, the overflow plate 210 is disposed on at least one side of the recovery tank 120 along a preset direction. The overflow plate 210 has an overflow channel inside, which communicates with the recovery tank 120. The overflow plate 210 can regulate the liquid level in the recovery tank 120. Specifically, when the liquid level of the first fluid in the recovery tank 120 reaches a preset value, the excess first fluid enters the overflow channel from the recovery tank 120, preventing the first fluid from overflowing the device due to excessively high liquid level in the recovery tank 120, and preventing the electrode 300 from being insufficiently wetted and rinsed due to excessively low liquid level in the recovery tank 120. Furthermore, in the direction from the third sub-slot 123 to the first sub-slot 121, the overflow plate 210 is inclined relative to the horizontal direction towards the bottom of the recovery tank 120, so that the flow direction of the first fluid in the overflow tank is away from the conveying path of the conveying mechanism 110. In other words, the height of the portion of the overflow plate 210 corresponding to the third sub-slot 123 is higher than the height of the portion of the overflow plate 210 corresponding to the first sub-slot 121, so that when the first fluid enters the overflow tank from the recovery tank 120, the flow direction of the first fluid in the overflow tank is from the third sub-slot 123 to the first sub-slot 121, thereby causing the first fluid in the overflow tank to return to the first sub-slot 121. By designing the overflow plate 210, the first fluid in the overflow tank is prevented from entering the third sub-tank 123 and contaminating it to the greatest extent possible. This ensures that the first fluid in the third sub-tank 123 is the purest fluid in the entire circulation system, thus guaranteeing the rinsing effect on the electrode 300.

[0149] Understandably, in the electrode stripping device 100 provided in this application embodiment, the electrode stripping device 100 achieves efficient synchronous stripping of double-sided coated electrodes 300, wherein the stripping rate of active material is greater than 95%. Furthermore, the current collector remains intact and has high recycling value; the integrity rate of the current collector is greater than 99%, the water resource recovery rate is greater than 90%, and the thermal energy utilization rate is improved by more than 30%. Moreover, through graded circulation and anti-clogging design, the system can operate continuously and stably; the fragment content of the current collector mixed at the outlet 1521 can be controlled to 50 ppm or less; the electrode stripping device 100 can adapt to electrodes 300 of different specifications, ensuring consistent product quality; and the electrode stripping device 100 can operate continuously for 30 days without cleaning or maintenance, demonstrating good performance.

[0150] Optionally, the electrode stripping device 100 further includes a hydrocyclone (not shown in the figure), which is disposed in the second sub-trough 122 and close to the overflow plate 210 to separate current collector fragments or other foreign matter generated during the stripping process, thereby improving the purity of the recovered active material.

[0151] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. An electrode tab peeling apparatus for peeling an active material of a current collector surface, characterized by, The pole piece stripping device comprises: a rack; a conveying mechanism arranged on the rack, the conveying mechanism comprising a first mounting assembly, a second mounting assembly, a first mesh belt and a second mesh belt, the first mesh belt being arranged on the outer side of the first mounting assembly, the second mesh belt being arranged on the outer side of the second mounting assembly, the first mesh belt and the second mesh belt being arranged at least partially opposite to each other, the first mesh belt and the second mesh belt being used for clamping the pole piece; a recovery tank, the recovery tank being provided with a first fluid, the first mesh belt and the second mesh belt being at least partially immersed in the first fluid, the first fluid being used for heating the pole piece; and a spraying mechanism arranged on the rack and used for spraying a second fluid towards the pole piece.

2. The pole piece stripping apparatus of claim 1, wherein Along the conveying path of the conveying mechanism, the recovery tank comprises a first sub-tank, a second sub-tank and a third sub-tank arranged in sequence, the temperature of the first fluid in the second sub-tank being greater than the temperature of the first fluid in the first sub-tank, and the temperature of the first fluid in the second sub-tank being greater than the temperature of the first fluid in the third sub-tank; the first sub-tank is used for preheating the pole piece, and the first mesh belt, the second mesh belt and the pole piece are all immersed in the first fluid in the first sub-tank; the spraying mechanism comprises a spraying unit, the spraying unit being arranged corresponding to the second sub-tank and being arranged above the conveying path of the conveying mechanism, and being used for spraying the second fluid towards the pole piece; the first fluid in the third sub-tank is used for rinsing the pole piece.

3. The pole piece stripping apparatus of claim 2, wherein, The spraying unit is arranged above the second sub-tank; the spraying unit comprises a spraying nozzle, the spraying nozzle being used for spraying the second fluid towards the pole piece, and the spraying direction of the second fluid being arranged at an acute angle with the surface of the pole piece.

4. The pole piece stripping apparatus of claim 3, wherein The included angle α between the spraying direction of the second fluid sprayed by the spraying nozzle and the surface of the pole piece ranges from 20° to 35°; and / or the spraying pressure P1 of the spraying nozzle ranges from 0.1 MPa to 0.3 MPa.

5. The pole piece stripping apparatus of claim 3, wherein The spraying unit further comprises a flushing nozzle, the spraying nozzle and the flushing nozzle being arranged in sequence along the conveying path of the conveying mechanism, the flushing nozzle being used for spraying the second fluid towards the pole piece, and the included angle β between the spraying direction of the second fluid sprayed by the flushing nozzle and the surface of the pole piece ranging from 85° to 95°.

6. The pole piece stripping apparatus of claim 5, wherein The spraying pressure P2 of the flushing nozzle ranges from 0.4 MPa to 0.7 MPa.

7. The pole piece stripping apparatus of claim 5, wherein The spraying mechanism further comprises a support plate, the support plate and the flushing nozzle being located on opposite sides of the pole piece, and the support plate being arranged in a spaced manner with the pole piece, the support plate being used for supporting the pole piece when the flushing nozzle flushes the pole piece.

8. The pole piece stripping apparatus of claim 3, wherein The number of the spraying units is two, and the two spraying units are arranged in a spaced manner along the conveying path of the conveying mechanism, and the two spraying units are arranged corresponding to opposite sides of the pole piece, respectively.

9. The pole piece stripping apparatus of claim 2, wherein The pole piece stripping device further comprises a gas nozzle mechanism, the gas nozzle mechanism is arranged at intervals with the spraying unit, the gas nozzle mechanism comprises at least two gas nozzle nozzles and is immersed in the first fluid, the gas nozzle nozzles are used for spraying gas towards the pole piece; at least one gas nozzle nozzle is located on one side of the pole piece, and at least one gas nozzle nozzle is located on the other side of the pole piece.

10. The pole piece stripping apparatus of claim 2, wherein The ratio A1 of the length of the first sub-groove to the length of the second sub-groove is in the range of 0.95 to 1.05 along the arrangement direction of the first sub-groove, the second sub-groove and the third sub-groove; the ratio A2 of the length of the second sub-groove to the length of the third sub-groove is in the range of 1.8 to 2.

3.

11. The pole piece stripping apparatus of claim 2, wherein The bottom of the first sub-groove, the bottom of the second sub-groove and the bottom of the third sub-groove are sequentially communicated; the recovery tank has a preset bottom wall, which is arranged at an inclination compared with the horizontal direction along the arrangement direction of the first sub-groove, the second sub-groove and the third sub-groove, so that the depth of the first sub-groove, the depth of the second sub-groove and the depth of the third sub-groove gradually increase.

12. The pole piece stripping apparatus of claim 11, wherein, The pole piece stripping device further comprises a collection pit, the collection pit is communicated with the recovery tank to collect the active material in the recovery tank.

13. The pole piece stripping apparatus of claim 12, wherein, The pole piece stripping device further comprises a conveying mechanism and a storage mechanism, the conveying mechanism is at least partially arranged in the collection pit and conveys the collected active material to the storage mechanism, and the storage mechanism is used for storing the active material.

14. The pole piece stripping apparatus of claim 13, wherein, The conveying mechanism comprises a collection screw and a discharge screw, the collection screw is arranged in the collection pit, the discharge screw is connected with the collection screw, the discharge screw has a discharge port corresponding to the storage mechanism; The collection screw is used for collecting the active material in the collection pit to the side close to the discharge screw, and the discharge screw is used for conveying the active material in the collection pit to the storage mechanism.

15. The pole piece stripping apparatus of claim 1, wherein, The first mounting assembly comprises a plurality of first supporting rollers and a first tensioning roller, the plurality of first supporting rollers and the first tensioning roller are arranged at intervals, the first mesh belt is wound around the outer periphery of each first supporting roller and first tensioning roller, and the first tensioning roller is used for adjusting the tension of the first mesh belt; and / or, The second mounting assembly comprises a plurality of second supporting rollers and a second tensioning roller, the plurality of second supporting rollers and the second tensioning roller are arranged at intervals, the second mesh belt is wound around the outer periphery of each second supporting roller and second tensioning roller, and the second tensioning roller is used for adjusting the tension of the second mesh belt.

16. The pole piece stripping apparatus of claim 2, wherein The pole piece stripping device further comprises a first water supply mechanism, a second water supply mechanism and a third water supply mechanism, the first water supply mechanism delivers the first fluid to the first sub-groove, the second water supply mechanism delivers the first fluid to the second sub-groove, and the third water supply mechanism delivers the first fluid to the third sub-groove; The first water supply mechanism, the second water supply mechanism and the third water supply mechanism each comprise a water supply pool, a driving pump and a heater, the recovery tank, the water supply pool, the driving pump and the heater are sequentially communicated, the driving pump is used for driving the flow of the first fluid in the water supply pool and the recovery tank, and the heater is used for heating the first fluid.

17. The pole piece stripping apparatus of claim 16, wherein, The recovery tank is provided with an overflow plate arranged on at least one side of the recovery tank along a preset direction, the overflow plate has an overflow tank inside, and the overflow tank is communicated with the recovery tank; when the liquid level of the first fluid in the recovery tank reaches a preset value, the first fluid enters the overflow tank from the recovery tank, wherein the preset direction intersects with the arrangement direction of the first sub-tank, the second sub-tank and the third sub-tank, and the preset direction also intersects with the direction of gravity; From the direction of the third sub-tank pointing to the first sub-tank, the overflow plate is arranged to be inclined towards the bottom of the recovery tank compared with the horizontal direction, so that the flow direction of the first fluid in the overflow tank deviates from the conveying path of the conveying mechanism.

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