A lithium battery positive electrode material heating and soaking device

Abstract

The present application relates to lithium battery positive electrode material processing technical field, especially to a kind of lithium battery positive electrode material heating soaking equipment, shell inside is provided with soaking pool, the bottom surface in soaking pool is rear high and front low inclination structure, soaking pool outside is provided with liquid inlet pipe, liquid inlet pipe front is provided with liquid pump, both sides in liquid inlet pipe middle part are provided with side liquid jet pipe, side liquid jet pipe extends into soaking pool inside, liquid inlet pipe rear portion is fixedly connected and is communicated with rear liquid jet pipe, rear liquid jet pipe left and right ends and two side liquid jet pipes are provided with first valve.The present application is heated by circulating heating water pipe, and closed loop circulation is formed with external heating device, and the soaking liquid is heated by water bath heat exchange method, and three-way high pressure flushing is realized by using left and right side liquid jet pipes and front side spraying of rear liquid jet pipe, and the bottom surface structure is guided to guide impurities self-flowing drainage, to achieve the effect of accurately maintaining process temperature, eliminating the contact dead angle of plate surface, accelerating the stripping of graphite dust and other impurities and completely discharging.

Description

Technical Field

[0001] This invention relates to the field of lithium battery cathode material processing technology, and in particular to a heating and immersion device for lithium battery cathode materials. Background Technology

[0002] Lithium-ion battery cathode materials are a crucial component of lithium-ion batteries, typically composed of compounds such as lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, or lithium iron phosphate. They determine the battery's energy density and cycle performance. With the large-scale development of electric vehicles and energy storage systems, the number of retired lithium-ion batteries has increased dramatically. The recovery of valuable metals from cathode materials and the separation and recycling of graphite anode materials have become a focus of industry attention. Currently, this field commonly employs heated soaking equipment to first treat waste electrode sheets. Solvents or chemical solutions are used to soften the binder under heating conditions, thereby dispersing graphite, conductive agents, and cathode materials into the soaking solution, providing a basis for subsequent screening, filtration, or flotation.

[0003] Traditional equipment often uses jacketed or bottom heating rods for heating, resulting in uneven temperature distribution of the solution in the tank. The temperature is higher near the heat source and lower at the liquid surface or away from the heat source. This temperature difference can lead to inconsistent softening of the binder, and graphite may not fully separate from the aluminum foil or positive electrode particles in some areas. Local overheating may also cause organic matter to carbonize and encapsulate the graphite particles, reducing the separation and recovery rate and purity of graphite. Summary of the Invention

[0004] To overcome the shortcomings of traditional equipment that uses jacket or bottom heating, resulting in uneven temperature inside the tank, overheating near the heat source causing organic matter to carbonize and encapsulate graphite, and insufficient temperature at the far end causing incomplete graphite dissociation, all of which reduce graphite recovery rate and purity, this invention provides a heating and soaking device for lithium battery cathode materials.

[0005] The technical solution is as follows: A heating and immersion device for lithium battery cathode materials, comprising: The machine casing contains an internal soaking tank with a sloping bottom that is higher at the back and lower at the front. An inlet pipe is located outside the soaking tank, with a liquid pump at the front. Side spray pipes are located on both sides of the middle of the inlet pipe, extending into the soaking tank. A rear spray pipe is fixedly connected to the rear of the inlet pipe. First valves are installed at both ends of the rear spray pipe and on the two side spray pipes. Several protective plates are installed at the bottom of the soaking tank. Multiple spray holes are opened in the area inside the protective plates on the rear spray pipe and the two side spray pipes. A water spray gap is left between the protective plates and the soaking tank. The rear spray pipe and the two side spray pipes are located between their respective protective plates and the soaking tank. Three drain pipes are installed at the front of the soaking tank, each with a second valve at the front. A circulating heating water pipe is installed at the front of the soaking tank, connected to an external heating device.

[0006] Preferably, it also includes a left side panel, a right side panel, a platform, and a maintenance door. The left side panel is located on one side inside the casing, and the right side panel is located on the other side inside the casing. A platform is located at the front of the casing, and multiple operating ports are opened at the front of the casing. Each operating port is symmetrically and rotatably connected to a maintenance door.

[0007] Preferably, the system also includes conveyor roller 1, conveyor roller 2, conveyor roller 3, side conveyor rollers, drive motors, and drive rollers. Conveyor roller 1 is rotatably connected inside the soaking tank. Multiple sets of conveyor roller 2 are arranged between the inside of the soaking tank and the inside of the machine casing, with each set of four conveyor roller 2 arranged in two staggered configurations. Multiple conveyor roller 3 are rotatably connected inside the machine casing. Multiple side conveyor rollers are rotatably connected between the two left side plates and between the two right side plates. Two drive motors are installed at the front of the left side plate and the right side plate on one side. Drive rollers are installed on the output shafts of the two drive motors. Multiple drive rollers are rotatably connected to the corresponding left side plate and right side plate.

[0008] Preferably, the assembly also includes a servo motor, an abutment roller, a scraper, a connecting housing, an auger conveyor rod, a fixing block, a sliding column, a tension spring, a connecting column, and a torsion spring. A servo motor is mounted on the front of the left side plate on the corresponding side. An abutment roller is mounted on the output shaft of the servo motor. The abutment roller is rotatably connected to the two left side plates. A scraper is rotatably connected between the two left side plates. A connecting housing is rotatably fitted between the front of the scraper and the front of the abutment roller. The connecting housing is inclined. A slot is formed on the top of the scraper, and a conveying chamber is formed inside the scraper. The trough is connected to the conveying chamber, and the conveying chamber is rotatably connected to the auger conveying rod. The scraper has a discharge port inside, which is set downward and connected to the soaking tank. A fixing block is installed on the rear of the left side plate on the corresponding side. A sliding column is slidably connected to the fixing block. A tension spring is connected between the sliding column and the fixing block. A sliding groove is opened on the side wall of the connecting housing, and the sliding column slides in the sliding groove. A connecting column is set on the right side of the scraper. An arc-shaped groove is opened on the right side of the connecting housing, and the connecting column slides in the arc-shaped groove. A torsion spring is connected between the connecting housing and the scraper.

[0009] Preferably, the device also includes a drive wheel and a belt. The front part of the abutment roller and the front part of the auger conveyor rod are both provided with drive wheels, and a belt is wound between the two drive wheels. Both drive wheels and the belt are located inside the connecting housing.

[0010] Preferably, the assembly also includes a recovery hopper, side scrapers, bottom scrapers, high-pressure water spray pipe 1, high-pressure water spray pipe 2, high-pressure water spray pipe 3, and a guide plate. The recovery hopper is installed between the right sides of the two right side plates and is inclined. A side scraper is installed on the top left side of the recovery hopper, and the side scraper abuts against the outer side of one of the side conveying rollers. A bottom scraper is installed on the left side of the recovery hopper. High-pressure water spray pipe 1 is fixedly connected to the top left side of the recovery hopper. High-pressure water spray pipe 2 is installed on the top of the recovery hopper. High-pressure water spray pipe 3 is installed inside the recovery hopper. High-pressure water spray pipe 1, high-pressure water spray pipe 2, and high-pressure water spray pipe 3 are all provided with multiple spray nozzles. A guide plate is installed inside the recovery hopper, and high-pressure water spray pipe 3 is located above the guide plate.

[0011] Preferably, it also includes an air frame, branch pipes, exhaust pipes, and external connecting pipes. An air frame is installed on the left side between the two left side plates. Branch pipes are provided on both sides of the air frame. The upper parts of the two branch pipes extend out of the casing. An exhaust pipe is provided between the upper parts of the two branch pipes. The left sides of the exhaust pipe are connected to the inside of the casing. An external connecting pipe is provided on the exhaust pipe, through which an external dehumidification device can be connected.

[0012] Preferably, the system also includes mounting blocks, electric cylinders, guide rails, sliders, and adjusting rollers. Mounting blocks are provided on one side of each of the two left side plates, and transverse grooves are provided on each of the two left side plates. Electric cylinders are mounted on each of the two mounting blocks, and guide rails are mounted on each of the two transverse grooves. Sliders are fixedly connected to the telescopic rods of the two electric cylinders, and each slider slides on its corresponding guide rail. An adjusting roller is rotatably connected between the two sliders, and the adjusting roller passes through the two transverse grooves.

[0013] Preferably, the device also includes a cylinder, a sliding frame, counterweights, a second guide rail, a second slider, and a tension roller. Cylinders are installed on both sides of the inside of the machine housing. A sliding frame is installed between the piston rods of the cylinders. Multiple counterweights are placed on both sides of the sliding frame. A second guide rail is installed on both sides of the inside of the machine housing. A second slider is slidably connected to the left side of each of the two second guide rails. Both second sliders are fixedly connected to the sliding frame. A tension roller is rotatably connected inside the sliding frame.

[0014] Preferably, it also includes pneumatic air knives and jet pipes. Two pneumatic air knives are fixedly connected between the upper parts of the two right side plates. Both pneumatic air knives are located to the left of the corresponding drive rollers. A jet pipe is provided between the upper parts of the two right side plates, and the jet pipe is located above the upper drive roller.

[0015] The beneficial effects of this invention are as follows: 1. This invention forms a closed-loop circulation of the medicine solution by using a circulating heating water pipe in conjunction with an external heating device. The medicine solution is heated at a constant temperature by water bath heat exchange. At the same time, it utilizes three high-pressure flushing methods, namely, the opposing jets from the left and right side spray pipes and the jet from the front side of the rear spray pipe. Combined with the high rear and low front bottom structure, it guides impurities to drain by gravity. This achieves the effects of accurately maintaining the process temperature, eliminating dead corners on the electrode surface, accelerating the peeling and thorough removal of impurities such as graphite dust, and effectively solving the problems of temperature fluctuations and impurity residues affecting the processing quality in traditional soaking.

[0016] 2. This invention utilizes conveyor roller one, conveyor roller two, and conveyor roller three to traverse the electrode plate multiple times in the soaking tank, forming an S-shaped path. This allows the electrode plate to repeatedly enter and exit the liquid surface, extending the effective soaking path and time. This ensures that every surface can fully receive the impact and wetting of the soaking liquid, greatly improving the problem of processing dead zones caused by insufficient mass transfer in traditional static soaking.

[0017] 3. During the process of conveying the electrode plate to the left, the scraper plate is always in close contact with the top surface of the electrode plate under the action of the torsion spring. The scraped graphite is forced into the soaking tank by the auger conveyor rod through the slot and the conveying chamber. This realizes the real-time removal and recycling of residual graphite on the top surface of the electrode plate during the conveying process, prevents graphite from adhering to the surface again, and improves the graphite collection rate.

[0018] 4. This invention uses a high-pressure water spray pipe to flush the bottom surface of the electrode plate from bottom to top, and the side scraper and bottom scraper scrape off the graphite adhering to the surface of the conveying roller. The high-pressure water spray pipes two and three flush the graphite on the guide plate and the inner wall of the recycling hopper into the bottom of the recycling hopper for centralized discharge, thus achieving complete recovery of graphite from the bottom surface of the electrode plate and inside the equipment.

[0019] 5. The present invention sets up an adjusting roller driven by an electric cylinder to achieve lateral tension adjustment, and a tensioning roller driven by a pneumatic cylinder in conjunction with a counterweight to achieve vertical tension adjustment. It can dynamically adjust the tension force according to the tightness of the electrode plate, prevent the electrode plate from becoming loose, deviating or wrinkled during multiple conveying processes, and ensure smooth conveying and consistent processing.

[0020] 6. The air frame of this invention extracts moisture from inside the casing through the branch pipe, and connects to external dehumidification equipment through the dehumidification pipe and external pipe. During the operation of the equipment, the water vapor generated by heating and soaking is continuously discharged, which prevents moisture from condensing on the inner wall of the casing or the surface of the electrode plate, ensuring a dry environment inside the equipment, improving the processing quality and the stability of equipment operation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the components of the present invention, including the liquid inlet pipe, liquid pump, and side spray pipe.

[0023] Figure 3 This is a three-dimensional structural diagram of the protective plate, drain pipe, and second valve of the present invention.

[0024] Figure 4 This is a three-dimensional structural diagram of the components of the present invention, including conveyor roller 2, conveyor roller 3, and side conveyor roller.

[0025] Figure 5 This is a three-dimensional structural diagram of the left side plate, right side plate, and pneumatic air knife components of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the servo motor, abutment roller, and scraper of the present invention.

[0027] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the abutment roller, scraper, and connecting housing.

[0028] Figure 8 This is a schematic diagram of the covering structure of the components such as the tension spring, connecting column, and torsion spring of the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the side conveying roller, drive motor, and drive roller components of the present invention.

[0030] Figure 10 This is a three-dimensional structural diagram of the side scraper, bottom scraper, and high-pressure water spray pipe components of the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram of the components of the present invention, including the high-pressure water spray pipe I, the high-pressure water spray pipe III, and the guide plate.

[0032] Figure 12 This is a three-dimensional structural diagram of the components of the present invention, including the electric cylinder, guide rail, and slider.

[0033] Figure 13 This is a three-dimensional structural diagram of the cylinder, counterweight, and guide rail components of the present invention.

[0034] Figure 14 This is a three-dimensional structural diagram of the components of the present invention, including the air frame, bronchus, and soaking tank.

[0035] Figure 15 This is a three-dimensional structural diagram of the components of the present invention, including the liquid inlet pipe, the rear spray pipe, and the soaking tank.

[0036] Figure 16 This is a three-dimensional structural diagram of the components of the present invention, including the inlet pipe, the rear spray pipe, and the side spray pipe.

[0037] Explanation of reference numerals in the attached drawings: 1_Machine casing, 11_Left side plate, 12_Right side plate, 13_Pneumatic air knife, 14_Air jet pipe, 2_Platform, 3_Inspection door, 4_Soaking tank, 41_Inlet pipe, 42_Liquid pump, 43_Side spray pipe, 44_First valve, 45_Protective plate, 46_Drain pipe, 47_Second valve, 48_Circulating heating water pipe, 49_Rear spray pipe, 5_Air frame, 51_Branch pipe, 52_Exhaust air pipe, 53_External pipe, 6_Conveyor roller one, 61_Conveyor roller two, 62_Conveyor roller three, 63_Side conveyor roller, 64_Drive motor, 65_Drive roller, 7_Servo motor, 71_ 72_Abutting roller, 73_Scraper, 74_Connecting housing, 75_Auger conveyor rod, 76_Drive wheel, 77_Belt, 78_Fixing block, 79_Sliding column, 710_Tension spring, 711_Torsion spring, 8_Recovery hopper, 81_Side scraper, 82_Bottom scraper, 83_High-pressure water spray pipe one, 84_High-pressure water spray pipe two, 85_High-pressure water spray pipe three, 86_Guide plate, 9_Mounting block, 91_Electric cylinder, 92_Guide rail one, 93_Slider one, 94_Adjusting roller, 10_Cylinder, 101_Counterweight block, 102_Guide rail two, 103_Slider two, 104_Sliding frame, 105_Tension roller. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0040] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] Example 1: A heating and immersion device for lithium battery cathode materials, such as... Figures 1-4 and Figures 14-16As shown, the device includes a casing 1, an immersion tank 4, an inlet pipe 41, a pump 42, side spray pipes 43, a rear spray pipe 49, a first valve 44, a protective plate 45, a drain pipe 46, a second valve 47, and a circulating heating water pipe 48. The immersion tank 4 is installed inside the lower side of the casing 1 via screws. The bottom surface of the immersion tank 4 has a sloping structure, higher at the back and lower at the front. An inlet pipe 41 is installed on the left side of the outside of the immersion tank 4 via screws. The front end of the inlet pipe 41 is fixedly connected to and connected to the pump 42. The left and right sides of the middle of the inlet pipe 41 are fixedly connected to and connected to the side spray pipes 43. The two side spray pipes 43 are parallel to the bottom surface of the immersion tank 4. The rear side of the inlet pipe 41 is fixedly connected to and connected to the rear spray pipe 49. The rear spray pipe 49 and the two side spray pipes 43 extend into the bottom of the immersion tank 4. The left and right sides of the two side spray pipes 43 are fixedly connected to and connected to the first valve 44. The rear spray pipe... Both ends of the pipe 49 are fixedly connected to and connected to the first valve 44. The bottom of the soaking pool 4 is symmetrically and inclinedly distributed with protective plates 45 installed by screws. Multiple spray holes are opened in the area inside the protective plates 45 on the rear spray pipe 49 and the two side spray pipes 43. A water spray gap is left between the multiple protective plates 45 and the soaking pool 4. The multiple spray holes on the rear spray pipe 49 face forward, and the multiple spray holes on the two side spray pipes 43 face one side closer to each other. The two side spray pipes 43 are located between the corresponding protective plates 45 and the soaking pool 4. Three drain pipes 46 are installed in a straight horizontal line on the front side of the soaking pool 4 through flanges. The front end of each drain pipe 46 is fixedly connected to and connected to the second valve 47. The middle front of the soaking pool 4 is fixedly connected to and connected to a circulating heating water pipe 48. The circulating heating water pipe is connected to and connected to an external heating device.

[0042] like Figure 1 As shown, it also includes a left side plate 11, a right side plate 12, a platform 2, and an inspection door 3. The left side plate 11 is symmetrically installed on the left side of the machine housing 1 by screws, and the right side plate 12 is symmetrically installed on the right side of the machine housing 1 by screws. The platform 2 is fixedly connected to the lower front of the machine housing 1. Multiple operating ports are opened in a linear array on the upper front of the machine housing 1. Each operating port is symmetrically connected to the inspection door 3 by hinges.

[0043] The operator stands on the equipment platform 2, opens the inspection door 3 at the front of the machine casing 1, and smoothly feeds the lithium battery positive electrode material plate to be processed into the designated processing area inside the soaking tank 4 through the equipment operation port. Then, the second valve 47 corresponding to the three drain pipes 46 is closed to block the front-end impurity discharge channel. Simultaneously, the circulating heating water pipe 48 connected to the middle of the front of the soaking tank 4 is started to continuously discharge the hot soaking solution inside the soaking tank 4. This, combined with the external heating device, forms a closed-loop circulation of the solution. The soaking solution in the tank is heated at a constant temperature through water bath heat exchange, precisely maintaining the process temperature required for the soaking solution, ensuring the stability of the positive electrode material soaking reaction, and avoiding the impact of temperature fluctuations on the material processing quality. After the solution preheating is complete, the inlet valve is opened... The first valves 44 on both sides of the liquid pipe 41 simultaneously start the liquid pump 42. The liquid pump 42 continuously draws the externally prepared hot soaking solution and completes high-pressure delivery through the liquid inlet pipe 41. The high-pressure hot soaking solution is distributed to the left and right side spray pipes 43 and the rear spray pipe 49. The three spray pipes simultaneously complete pressurization and liquid supply. The spray holes of the left and right side spray pipes 43 face the inner side that is close to each other, and the two lateral liquids spray towards each other. The spray holes of the rear spray pipe 49 spray towards the front. The three high-pressure liquids pass through the water spray gap reserved between the protective plate 45 and the soaking tank 4 and converge and flush the positive electrode plate placed in the middle of the soaking tank 4 from the rear, left and right sides. At the same time, the equipment tilts symmetrically front and back. The obliquely installed protective plate 45 serves a dual purpose of protection and flow guidance. On one hand, it prevents the positive electrode plate from directly contacting the squeezing side spray pipe 43 and the rear spray pipe 49, avoiding pipe damage due to pressure and blockage of the spray holes. On the other hand, in conjunction with the oblique protective plate structure, it regulates the flow direction of the sprayed liquid, ensuring that all sprayed liquid is sprayed directionally along the preset spray gaps, eliminating turbulent flow of the liquid, and allowing the electrode plate surface to contact the hot soaking liquid without dead angles, thus enhancing the soaking and impurity removal and surface activation effects. Relying on the bottom structure of the soaking tank 4, which is higher at the back and lower at the front, the hot soaking liquid after spraying will naturally converge towards the lower front area. With the second valve 47 in the closed state, the soaking liquid continues to accumulate inside the soaking tank 4 until the process-set soaking liquid level is reached, and the electrode plate is completely immersed in the constant temperature soaking solution. In the soaking solution, the continuous circulation of three-dimensional high-pressure spraying agitates the surface of the positive electrode plate, accelerating the removal of residual graphite dust, debris, and other impurities, thus improving the soaking processing efficiency. After the soaking process is completed, the second valve 47 corresponding to the three horizontally arranged drain pipes 46 at the front end is opened. Due to the slope of the soaking pool 4 (higher at the back and lower at the front), the removed graphite debris, dust, and other solid impurities will flow with the solution to the lower position at the front end of the soaking pool, and finally be discharged outwards through the drain pipes 46, completing the separation and removal of impurities and waste solution. Throughout the entire process, the circulating heating water pipe 48 operates independently and continuously, maintaining the heat exchange and insulation of the solution in the pool, ensuring a constant soaking environment temperature, and completing the impurity removal operation without interrupting the spraying and soaking processes.

[0044] like Figure 2 , Figure 4 , Figure 5 , Figure 9 and Figure 11 As shown, it also includes conveyor roller 6, conveyor roller 61, conveyor roller 62, side conveyor roller 63, drive motor 64, and drive roller 65. Conveyor roller 6 is rotatably connected in a linear array inside the soaking tank 4. Multiple sets of conveyor rollers 61 are arranged between the middle of the soaking tank 4 and the middle of the machine casing 1. Each set of conveyor rollers 61 consists of four rollers, and the four rollers in each set are arranged in an alternating pattern, with the two upper rollers 61 in each set rotatably connected to the machine casing 1, and the two lower rollers 61 in each set rotatably connected to the soaking tank 4. This allows the electrode plate to pass through a set of conveyor rollers 61 in a linear array. Two lower conveyor rollers 61 are wound around the two upper conveyor rollers 61, and then through the next group of four, repeating this process to make the electrode plate form an S-shape. Inside the housing 1, multiple conveyor rollers 62 are rotatably connected in a linear array on the upper side. Multiple side conveyor rollers 63 are rotatably connected between the two left side plates 11 and between the two right side plates 12. Two drive motors 64 are fixedly connected to the front of the left side plate 11 and the right side plate 12. The output axes of the two drive motors 64 extend backward and are fixedly connected to drive rollers 65. All four drive rollers 65 are rotatably connected to the corresponding left side plate 11 and right side plate 12.

[0045] Next, two drive motors 64 are started. The output shafts of the two drive motors 64 rotate, driving the corresponding drive rollers 65 to rotate. The drive roller 65 on the left rotates clockwise, conveying the electrode plate from the left side plate 11 to the right. The electrode plate first contacts multiple side conveyor rollers 63 between the left side plates 11. The side conveyor rollers 63 rotate passively, guiding the electrode plate to move to the right and enter the soaking tank 4. Inside the soaking tank 4, the electrode plate contacts multiple conveyor rollers 61 in sequence. The conveyor rollers 61 rotate passively, conveying the electrode plate horizontally from left to right. After the electrode plate leaves the right side of the soaking tank 4, it contacts multiple side conveyor rollers 63 between the right side plates 12. The side conveyor rollers 63 rotate passively, guiding the electrode plate to the right until it contacts a drive roller 65 on the right side. This drive roller 65 rotates counterclockwise, changing the direction of the electrode plate's movement to the left, causing the electrode plate to re-enter the soaking tank 4 to the left. During the leftward movement of the electrode plate, it sequentially contacts the grouped conveyor rollers 61. When the electrode plate contacts the two lower conveyor rollers 61, the conveyor rollers 61 rotate passively, and the electrode plate moves to the left in the soaking tank 4. Then the electrode plate moves upward around the two upper conveyor rollers 61, and the conveyor rollers 61 rotate passively again. The electrode plate changes direction and moves to the right a short distance before turning to the left. This process is repeated to form an S-shaped path, allowing the electrode plate to move up and down multiple times in the soaking tank 4, fully receiving the impact of the soaking liquid sprayed upward from the spray hole and the wetting of the liquid in the soaking tank 4. When the electrode plate is conveyed to the leftmost end, it contacts the last drive roller 65 on the left. The drive roller 65 rotates and changes the direction of the electrode plate's movement to the right. The electrode plate then contacts multiple conveyor rollers 62, which rotate passively. The electrode plate no longer enters the soaking tank 4 and moves horizontally to the rightmost end, finally contacting the last drive roller 65 on the right. The drive roller 65 rotates clockwise, conveying the processed electrode plate from the right side of the equipment to the outside of the equipment.

[0046] like Figures 6-8As shown, it also includes a servo motor 7, an abutment roller 71, a scraper 72, a connecting housing 73, an auger conveyor rod 74, a fixing block 77, a sliding column 78, a tension spring 79, a connecting column 710, a torsion spring 711, a transmission wheel 75, and a belt 76. The servo motor 7 is fixedly connected to the front of the left side plate 11. The output axis of the servo motor 7 extends rearward and is fixedly connected to the abutment roller 71. The abutment roller 71 is rotatably connected to both left side plates 11. The abutment roller 71 is located directly to the left of one of the conveying rollers 61. A scraper 72 is rotatably connected between the two left side plates 11. A connecting housing 73 is rotatably fitted between the front end of the scraper 72 and the front end of the abutment roller 71. The connecting housing 73 is inclined. A slot is formed on the top left side of the scraper 72. A conveying chamber is formed on the left side inside the scraper 72. The slot communicates with the conveying chamber. The conveying chamber rotates... The device is connected to a screw conveyor rod 74. A discharge port is provided on the front side of the scraper plate 72, which is set downward and communicates with the soaking tank 4. A fixing block 77 is installed on the upper rear side of the left side plate 11 located on the front side by screws. A sliding column 78 is slidably connected to the top side of the fixing block 77. A tension spring 79 is connected between the sliding column 78 and the fixing block 77. A sliding groove is provided on the front side of the connecting housing 73, and the sliding column 78 slides in the sliding groove. A connecting column 710 is fixedly connected to the right side of the scraper plate 72. An arc-shaped groove is provided on the right side of the connecting housing 73, and the connecting column 710 slides in the arc-shaped groove. A torsion spring 711 is connected between the connecting housing 73 and the scraper plate 72. A drive wheel 75 is fixedly sleeved on the front end of the abutment roller 71 and the front end of the screw conveyor rod 74. A belt 76 is wound between the two drive wheels 75. The two drive wheels 75 and the belt 76 are all located inside the connecting housing 73.

[0047] As the electrode plate is conveyed to the left past one of the conveyor rollers 61, it contacts the abutment roller 71. The servo motor 7 is then activated, and its output shaft rotates counterclockwise, causing the abutment roller 71 to rotate counterclockwise. The abutment roller 71 assists the electrode plate in moving smoothly to the left. Simultaneously, the scraper plate 72, under the action of the torsion spring 711, makes close contact with the top surface of the electrode plate. During the leftward movement of the electrode plate, the scraper plate 72 scrapes off the graphite adhering to the top surface of the electrode plate. The graphite falls into the conveying chamber through a slot. As the abutment roller 71 rotates counterclockwise, it is driven by the front drive wheel 75 and the belt 76. The auger conveyor rod 74 rotates in the same direction, and the auger conveyor rod 74 conveys the scraped graphite forward in the conveying chamber. After the graphite reaches the discharge port, it falls downward and is directly discharged into the soaking tank 4. When the thickness of the electrode plate changes or there is unevenness, the scraper plate 72 is pushed upward, the connecting column 710 slides in the arc groove of the connecting housing 73, and the connecting housing 73 moves upward as a whole. The sliding groove drives the sliding column 78 to slide upward, the tension spring 79 is stretched, and the torsion spring 711 between the scraper plate 72 and the connecting housing 73 is twisted, so that the scraper plate 72 is always in close contact with the top surface of the electrode plate.

[0048] like Figures 1-2 and Figures 9-11As shown, it also includes a recycling hopper 8, a side scraper 81, a bottom scraper 82, a high-pressure water spray pipe 1 83, a high-pressure water spray pipe 2 84, a high-pressure water spray pipe 3 85, and a guide plate 86. The recycling hopper 8 is installed between the right sides of the two right side plates 12 by screws. The recycling hopper 8 is inclined with the left side higher than the right side. One of the side conveying rollers 63 is located above the recycling hopper 8. The side scraper 81 is installed on the top left side of the recycling hopper 8 by screws. The side scraper 81 abuts against the outer side of one of the side conveying rollers 63. The bottom scraper 8 is installed on the left side of the recycling hopper 8 by screws. 2. The bottom scraper 82 is located directly below one of the side conveying rollers 63. A high-pressure water spray pipe 1 83 is fixedly connected to the top left side of the recycling hopper 8, a high-pressure water spray pipe 2 84 is fixedly connected to the top right side of the recycling hopper 8, and a high-pressure water spray pipe 3 85 is fixedly connected to the inside left side of the recycling hopper 8. Multiple spray nozzles are provided on the top side of the high-pressure water spray pipe 1 83, the bottom side of the high-pressure water spray pipe 2 84, and the bottom side of the high-pressure water spray pipe 3 85. An inclined guide plate 86 is installed on the inside left side of the recycling hopper 8 by screws, and the high-pressure water spray pipe 3 85 is located directly above the guide plate 86.

[0049] During the conveying process of the electrode plates inside the equipment, when they pass through the side conveyor rollers 63 between the right side plates 12, a recovery hopper 8 is provided above the side conveyor rollers 63. When the side conveyor rollers 63 rotate, the side scraper 81 abuts against the outer surface of the side conveyor rollers 63, scraping off the graphite adhering to the surface of the side conveyor rollers 63. The graphite falls into the recovery hopper 8. At the same time, the high-pressure water spray pipe 83 is activated, and multiple nozzles on the high-pressure water spray pipe 83 spray high-pressure water upwards to wash away the excess graphite on the bottom surface of the electrode plates above. Graphite falls into the recycling hopper 8 through the guide plate 86. The high-pressure water spray pipe 2 84 is activated, and multiple nozzles on the high-pressure water spray pipe 2 84 spray high-pressure water towards the guide plate 86, flushing any graphite that may be adhering to the guide plate 86 into the bottom of the recycling hopper 8. The high-pressure water spray pipe 3 85 is activated, and multiple nozzles on the high-pressure water spray pipe 3 85 spray high-pressure water to the lower right, flushing the graphite accumulated at the bottom of the recycling hopper 8 to the lower right, and then guiding it out of the recycling hopper 8 through the guide plate 86, thus achieving centralized recycling of graphite.

[0050] When all electrode plates have been processed and the equipment is no longer in use, the operator first turns off the liquid pump 42, then closes the first valve 44 on the inlet pipe 41 to stop supplying soaking liquid to the soaking tank 4, closes the circulating heating water pipe 48 to stop heating circulation, opens the second valve 47 on the drain pipe 46, and discharges the residual soaking liquid in the soaking tank 4 through the drain pipe 46. The two drive motors 64 are then turned off, and all drive rollers 65, conveyor roller one 6, conveyor roller two 61, conveyor roller three 62, and side conveyor roller 63 stop rotating. The servo motor 7 is then turned off, and the contact roller 7... 1. The auger conveyor rod 74 stops rotating, and the transmission wheel 75 and belt 76 stop moving. At this time, the scraper 72 returns to its original position under the contraction force of the tension spring 79, the slide column 78 slides down along the slide groove, and the connecting housing 73 descends to its initial position. At the same time, the torsional restoring force of the torsion spring 711 causes the scraper 72 to rotate in the opposite direction relative to the connecting housing 73. The scraper 72 returns to its initial angle, and the high-pressure water spray pipes 83, 84, and 85 are closed to stop water spraying. Finally, the operator closes the maintenance door 3 to complete the manual reset of the equipment.

[0051] Example 2: Based on Example 1, such as Figure 1 , Figure 2 and Figure 14 As shown, it also includes an air frame 5, a branch pipe 51, a dehumidifying air pipe 52, and an external pipe 53. The air frame 5 is installed on the left side between the two left side plates 11 by screws. The air frame 5 is fixedly connected to the branch pipe 51 on both the front and rear sides. The upper ends of the two branch pipes 51 are fixedly connected to the dehumidifying air pipe 52 between the two housings 1. The left side of the dehumidifying air pipe 52 is connected to the inside of the housing 1 on both the front and rear sides. The right end of the dehumidifying air pipe 52 is fixedly connected to the external pipe 53, and an external dehumidifying device can be connected through the external pipe 53.

[0052] During equipment operation, moisture is generated inside the casing 1 due to heating and soaking. The moisture naturally rises into the casing 1 interface and then converges into the exhaust pipe 52. At the same time, the air frame 5 extracts the accumulated moisture through two branch pipes 51. The moisture flows upward through the branch pipes 51 into the exhaust pipe 52 and is finally sucked into the external dehumidification equipment through the external pipe 53, realizing the continuous discharge of moisture inside the casing 1. After use, the operator turns off the external dehumidification equipment, and the gas in the air frame 5, branch pipes 51, exhaust pipe 52 and external pipe 53 stops flowing and automatically returns to the static standby state.

[0053] like Figure 5 and Figure 12As shown, it also includes mounting blocks 9, electric cylinders 91, guide rails 92, sliders 93, and adjusting rollers 94. Mounting blocks 9 are fixedly connected to the opposite sides of the two left side plates 11. Horizontal grooves are provided on both left side plates 11. Electric cylinders 91 are installed on the right side of the two mounting blocks 9 by screws. Guide rails 92 are fixedly connected to the lower side of the two horizontal grooves. Slider 93 is fixedly connected to the telescopic rods of the two electric cylinders 91 extending to the left. The two sliders 93 are slidably connected on the corresponding guide rails 92. Adjusting rollers 94 are rotatably connected between the adjacent sides of the two sliders 93. The adjusting rollers 94 pass through the two horizontal grooves.

[0054] When the electrode plates are conveyed between the left side plates 11, the operator activates two electric cylinders 91. The telescopic rods of the electric cylinders 91 extend to the left, pushing the slider 93 to slide to the left on the guide rail 92. The slider 93 drives the adjusting roller 94 to move to the left along the transverse groove of the left side plate 11. The adjusting roller 94 abuts against the electrode plate from the left, applying a lateral tension force to the electrode plate. If it is necessary to reduce the tension force, the telescopic rod of the electric cylinder 91 retracts to the right, pulling the slider 93 and the adjusting roller 94 to move to the right. During the electrode plate conveying process, the electric cylinder 91 can dynamically adjust the extension amount of the telescopic rod according to the tightness of the electrode plate. After all the electrode plates are processed, the operator controls the telescopic rod of the electric cylinder 91 to fully retract to the initial position. The slider 93 slides to the right end of the guide rail 92, and the adjusting roller 94 then resets to the right, releasing the lateral tension on the electrode plate.

[0055] like Figure 5 and Figure 13 As shown, it also includes a cylinder 10, a sliding frame 104, a counterweight 101, a guide rail 102, a slider 103, and a tension roller 105. The cylinder 10 is fixedly connected to both the front and rear sides inside the housing 1. The piston rod of the cylinder 10 is fixedly connected to the sliding frame 104 extending downwards. Multiple counterweights 101 are placed on both the front and rear sides of the sliding frame 104. The guide rails 102 are vertically distributed and installed on both the front and rear sides inside the housing 1 by screws. Slider 103 is slidably connected to the left side of each guide rail 102. Both sliders 103 are fixedly connected to the sliding frame 104. The tension roller 105 is rotatably connected to the inner side of the sliding frame 104.

[0056] During the electrode plate conveying process, the operator activates two cylinders 10. The piston rods of the cylinders 10 extend downward, pushing the sliding frame 104 downward. The sliding frame 104 slides downward on the vertically distributed guide rails 102 via the slider 103. The tension roller 105 inside the sliding frame 104 moves downward accordingly, pressing the electrode plate from above and applying vertical tension. The counterweight 101 increases the weight of the sliding frame 104, making the tension more stable. If it is necessary to reduce the vertical tension, the piston rod of the cylinder 10 retracts upward, pulling the sliding frame 104 and the tension roller 105 upward. After the electrode plate conveying is completed, the operator controls the piston rod of the cylinder 10 to fully retract to the initial position. The sliding frame 104 slides upward along the guide rails 102 via the slider 103 to reset, and the tension roller 105 is lifted, disengaging from contact with the electrode plate.

[0057] like Figure 4 and Figure 5 As shown, it also includes pneumatic air knives 13 and jet pipes 14. Two pneumatic air knives 13 are fixedly connected between the upper right sides of the two right side plates 12. Both pneumatic air knives 13 are located to the left of the corresponding drive rollers 65. A jet pipe 14 is fixedly connected between the upper right sides of the two right side plates 12. The jet pipe 14 is located to the upper right of the upper drive roller 65.

[0058] As the electrode plate is conveyed outward from the last drive roller 65 on the right, the operator activates two pneumatic air knives 13 and an air jet pipe 14. The two pneumatic air knives 13 spray high-speed airflow onto the surface of the corresponding drive roller 65, blowing away the residual moisture on the surface of the drive roller 65 to the side. At the same time, the air jet pipe 14 sprays high-speed airflow onto the surface of the electrode plate, blowing away the moisture carried on the upper and lower surfaces of the electrode plate forward or to the side, keeping the electrode plate dry when it is output from the equipment. After use, the operator turns off the air supply of the pneumatic air knives 13 and the air jet pipe 14, and the pneumatic air knives 13 and the air jet pipe 14 stop spraying air, completing the automatic reset.

Claims

1. A heating and immersion device for lithium battery cathode materials, characterized in that, include: The machine casing contains an internal soaking tank with a sloping bottom that is higher at the back and lower at the front. An inlet pipe is located outside the soaking tank, with a liquid pump at its front. Side spray pipes are located on both sides of the middle of the inlet pipe, extending into the soaking tank. A rear spray pipe is fixedly connected to and communicates with the rear of the inlet pipe. First valves are installed at both ends of the rear spray pipe and on the two side spray pipes. Several protective plates are installed at the bottom of the soaking tank. Multiple spray holes are opened in the area inside the protective plates on the rear spray pipe and the two side spray pipes. A spray gap is left between the protective plates and the soaking tank. The rear spray pipe and the two side spray pipes are located between their respective protective plates and the soaking tank. Three drain pipes are located at the front of the soaking tank, each with a second valve at its front. A circulation system is installed at the front of the soaking tank. The system includes a heating water pipe, a circulating heating water pipe connected to and communicating with an external heating device; it also includes a left side plate and a right side plate, with a left side plate located on one side of the machine housing and a right side plate located on the other side of the machine housing; it also includes a first conveyor roller, a second conveyor roller, a third conveyor roller, a side conveyor roller, a drive motor, and a drive roller. The first conveyor roller is rotatably connected inside the soaking tank. Multiple sets of second conveyor rollers are arranged between the inside of the soaking tank and the inside of the machine housing, with each set of four second conveyor rollers arranged in a staggered pattern. Multiple third conveyor rollers are rotatably connected inside the machine housing. Multiple side conveyor rollers are rotatably connected between the two left side plates and between the two right side plates. Two drive motors are installed at the front of one side of the left side plate and the right side plate, and drive rollers are installed on the output shafts of the two drive motors. Multiple drive rollers are rotatably connected to the corresponding left side plate and right side plate.

2. The lithium battery cathode material heating and immersion equipment according to claim 1, characterized in that, It also includes a servo motor, abutment roller, scraper, connecting housing, auger conveyor rod, fixing block, sliding column, tension spring, connecting column, and torsion spring. A servo motor is mounted on the front of the left side plate on the corresponding side. An abutment roller is mounted on the output shaft of the servo motor. The abutment roller is rotatably connected to the two left side plates. A scraper is rotatably connected between the two left side plates. A connecting housing is rotatably fitted between the front of the scraper and the front of the abutment roller. The connecting housing is inclined. A slot is formed on the top of the scraper, and a conveying cavity is formed inside the scraper. The slot connects to the conveying... The chambers are interconnected, and a screw conveyor rod is rotatably connected inside the conveying chamber. The scraper has a discharge port inside, which faces downward and communicates with the soaking tank. A fixing block is installed on the rear of the left side plate on the corresponding side. A sliding column is slidably connected to the fixing block. A tension spring connects the sliding column and the fixing block. A sliding groove is opened on the side wall of the connecting housing, and the sliding column slides inside the sliding groove. A connecting column is provided on the right side of the scraper. An arc-shaped groove is opened on the right side of the connecting housing, and the connecting column slides inside the arc-shaped groove. A torsion spring connects the connecting housing and the scraper.

3. The lithium battery cathode material heating and immersion equipment according to claim 2, characterized in that, It also includes drive wheels and belts. Drive wheels are provided at the front of the abutting roller and the front of the auger conveyor rod. A belt is wound between the two drive wheels. Both drive wheels and the belt are located inside the connecting housing.

4. The lithium battery cathode material heating and immersion equipment according to claim 3, characterized in that, It also includes a recycling hopper, side scrapers, bottom scrapers, high-pressure water spray pipe one, high-pressure water spray pipe two, high-pressure water spray pipe three, and a guide plate. The recycling hopper is installed between the right sides of the two right side plates. The recycling hopper is inclined. A side scraper is installed on the top left side of the recycling hopper. The side scraper abuts against the outer side of one of the side conveying rollers. A bottom scraper is installed on the left side of the recycling hopper. High-pressure water spray pipe one is fixedly connected to the top left side of the recycling hopper. High-pressure water spray pipe two is installed on the top of the recycling hopper. High-pressure water spray pipe three is installed inside the recycling hopper. High-pressure water spray pipe one, high-pressure water spray pipe two, and high-pressure water spray pipe three are all provided with multiple spray nozzles. A guide plate is installed inside the recycling hopper. High-pressure water spray pipe three is located above the guide plate.

5. The lithium battery cathode material heating and immersion equipment according to claim 4, characterized in that, It also includes an air frame, branch pipes, exhaust pipes, and external connecting pipes. An air frame is installed on the left side between the two left side plates. Branch pipes are provided on both sides of the air frame. The upper parts of the two branch pipes extend out of the housing. An exhaust pipe is provided between the upper parts of the two branch pipes. The left sides of the exhaust pipe are connected to the inside of the housing. An external connecting pipe is provided on the exhaust pipe, and an external dehumidification device is connected through the external connecting pipe.

6. The lithium battery cathode material heating and immersion equipment according to claim 5, characterized in that, It also includes mounting blocks, electric cylinders, guide rails, sliders, and adjusting rollers. Mounting blocks are provided on one side of each of the two left side plates. Horizontal grooves are provided on each of the two left side plates. Electric cylinders are mounted on each of the two mounting blocks. Guide rails are mounted at each of the two horizontal grooves. Sliders are fixedly connected to the telescopic rods of each of the two electric cylinders. Each slider slides on its corresponding guide rail. An adjusting roller is rotatably connected between the two sliders, and the adjusting roller passes through the two horizontal grooves.

7. The lithium battery cathode material heating and immersion equipment according to claim 6, characterized in that, It also includes cylinders, sliding frames, counterweights, guide rails, sliders, and tension rollers. Cylinders are installed on both sides of the inside of the housing. Sliding frames are installed between the piston rods of the cylinders. Multiple counterweights are placed on both sides of the sliding frames. Guide rails are installed on both sides of the inside of the housing. Sliding sliders are slidably connected to the left side of each of the two guide rails. Both sliders are fixedly connected to the sliding frames. Tension rollers are rotatably connected inside the sliding frames.

8. The lithium battery positive electrode material heating and soaking equipment according to claim 7, characterized in that, It also includes pneumatic air knives and jet pipes. Two pneumatic air knives are fixedly connected between the upper parts of the two right side plates. Both pneumatic air knives are located to the left of the corresponding drive rollers. A jet pipe is provided between the upper parts of the two right side plates. The jet pipe is located above the upper drive roller.

9. The lithium battery positive electrode material heating and immersion equipment according to claim 8, characterized in that, It also includes a platform and an inspection door. A platform is provided at the front of the casing, and multiple operating ports are opened at the front of the casing. Each operating port is symmetrically and rotatably connected to an inspection door.

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