Cold air self-circulation high-airtightness lithium battery material drying equipment

Abstract

The invention relates to the technical field of lithium battery material drying, in particular to cold air self-circulation high-airtightness lithium battery material drying equipment. Comprising a sealed box body, and a drying chamber is arranged in the sealed box body. Dry cold air of the drying equipment obliquely purges the pole pieces from the multiple sets of air blowing assemblies to take away moisture, then the dry cold air is reflected and diffused through the pole pieces, the multiple sets of flow guide plates with the inner walls being cambered surfaces on the two sides of the pole pieces can guide reflected airflow into the air suction grooves, and the first baffle and the second baffle can block airflow diffusion; by means of the technical scheme, after the pole piece is dried by the dry cold air, the dry cold air can still carry the cold air to enter the refrigeration and dehumidification module, self-circulation of cold air drying is achieved, new pollution caused by contact between the cold air and outside air is avoided, the using effect of the drying equipment is improved, and energy consumption of refrigeration and dehumidification work is reduced.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery material drying technology, and specifically relates to a cold air self-circulating high airtightness lithium battery material drying equipment. Background Technology

[0002] Drying lithium battery electrodes is a key process in production, and its core significance lies in ensuring battery safety and performance by removing moisture and volatile impurities.

[0003] A search revealed that Chinese Patent Publication No. CN116558234B, published on September 8, 2023, discloses a lithium battery electrode drying device, specifically relating to the technical field of lithium battery electrode drying devices. The device includes a housing with a rotating sealing door at the front. A cavity is formed inside the top wall of the housing, and a U-shaped water pipe is located on the right side of the cavity. An electric heating wire and several heat-insulating sleeves connecting to the inner cavity of the U-shaped water pipe are provided on the outer surface of the vertical portion of the U-shaped water pipe near the rotating sealing door. Several heat-conducting rods are evenly distributed on the outer surface of the electric heating wire. This lithium battery electrode drying device improves the drying speed by increasing the ambient temperature inside the heating chamber and increasing hot air blowing. Furthermore, by using a threaded tube to reduce the temperature of the subsequent hot airflow blowing onto the electrode, the distribution of the binder on the electrode is more uniform, and the adhesion between the current collector and the active material is stronger, thereby improving the drying quality of the electrode.

[0004] However, the device still has the following drawbacks: Existing drying equipment typically relies on high temperatures of 50-120℃, which can easily lead to crystal damage and surface oxidation of lithium battery materials (such as high-nickel ternary and silicon-based anodes), or cause the binder to age and fail, thereby reducing the effectiveness of the drying equipment. Summary of the Invention

[0005] To address the above problems, this invention provides a cold air self-circulating high airtightness lithium battery material drying device, including a sealed box, a drying chamber inside the sealed box; an ion fan at the top of the drying chamber; a heating module and a cooling and dehumidification module on one side wall of the sealed box; and an air guide pipe inside the drying chamber. The outer wall of the air guide tube is provided with several sets of installation and communication mechanisms at equal intervals along the vertical direction; the bottom of the installation and communication mechanism is connected to a rotating ring; the bottom of the rotating ring is provided with several sets of electrode limiting components in a ring array; the bottom of the installation and communication mechanism is provided with two sets of blowing components and suction components symmetrically. The air intake assembly includes two sets of symmetrically arranged elliptical air intake hoods; the bottom of the two sets of air intake hoods is provided with a baffle plate; each set of air intake slots has an air intake slot on one side wall near the baffle plate; each set of air intake slots has several sets of guide plates with arc-shaped inner walls that move vertically through one side wall near the baffle plate; and each set of air intake slots has a baffle plate two that is elastically hinged to the other side wall near the baffle plate.

[0006] Furthermore, a set of electromagnetic valves is provided between the ion fan and the heating module, and between the heating module and the refrigeration and dehumidification module; the two sets of air blowing components are located on the outer and inner sides of the rotating ring, respectively; the rotating ring moves through the interior; several sets of winding channels are symmetrically arranged at equal intervals along the vertical direction on both inner walls of the drying chamber; several sets of winding boxes are symmetrically arranged at equal intervals along the vertical direction on both outer walls of the sealed box; each set of winding boxes is connected to a corresponding set of winding channels; the top of the air guide pipe, the ion fan, the heating module, the refrigeration and dehumidification module, and the bottom of the air guide pipe are sequentially and cyclically connected.

[0007] Furthermore, the air guide pipe includes a pipe body; a set of air guide grooves are respectively opened at the top and bottom of the pipe body; a number of threaded connection holes are symmetrically opened on the inner walls of the two sets of air guide grooves; the two sets of air guide grooves are respectively connected to the output end of the ion fan and the input end of the refrigeration and dehumidification module.

[0008] Furthermore, the installation and connection mechanism includes two sets of semi-circular mounting plates; two sets of connecting grooves are symmetrically opened on the opposite side wall of the two sets of mounting plates; the inner wall of each set of connecting grooves is movably abutting against the outer wall of the pipe body; two sets of guide grooves are symmetrically opened at the bottom of the two sets of mounting plates; the two sets of guide grooves are combined to form an annular guide groove; the rotating ring is installed in the annular guide groove.

[0009] Furthermore, each set of mounting plates is provided with a set of air guide channel one and air guide channel two; each set of air guide channel one and air guide channel two is connected to another set of air guide channel one and air guide channel two; the two sets of air guide channel one and air guide channel two are respectively connected to two sets of air blowing components and two sets of air suction components.

[0010] Furthermore, two sets of sliding grooves are symmetrically provided on the top of the two sets of mounting plates; two sets of sliders are symmetrically slidably connected in the two sets of sliding grooves; a set of knobs is provided on the top of each set of sliders; a set of connecting pipes is provided on the side wall of each set of sliders near the connecting groove; one end of each set of connecting pipes is connected to the knobs, and the other end moves through the corresponding set of connecting grooves.

[0011] Furthermore, each set of connecting pipes has a threaded groove on the outer wall of one end near the connecting groove, and is threadedly connected to the threaded connecting hole; each set of connecting pipes has several sets of air guide grooves arranged in a ring array on the outer wall; the several sets of air guide grooves on the two sets of connecting pipes are respectively movably connected to a corresponding set of air guide channel one and air guide channel two; the distance between two adjacent sets of air guide grooves is less than the inner wall diameter of air guide channel one and air guide channel two.

[0012] Furthermore, the electrode limiting assembly includes a fan-shaped guide plate; a fan-shaped sliding groove is provided at the bottom of the guide plate; two sets of clamps are symmetrically slidably connected in the sliding groove; two sets of clamping plates are rotatably connected to the two output ends of each set of clamps; two sets of rotating rods are symmetrically provided on the inner walls of both sides of the sliding groove; a guide groove is spirally provided on the outer wall of each set of rotating rods; two sets of adjusting springs are provided in the sliding groove; one end of each set of adjusting springs is embedded in the corresponding set of guide grooves, and the other end is connected to the corresponding set of clamps.

[0013] Furthermore, the air blowing assembly includes a mounting column; a rotating shaft is provided on the outer wall of the mounting column; an air jet plate is fitted on the outer wall of the rotating shaft; a set of rotatable air jet plates are provided at the top and bottom of the air jet plate; and several sets of air jet holes are evenly opened on the side wall of the two sets of air jet plates and the air jet plate away from the rotating shaft.

[0014] Furthermore, each set of baffles 2 is movably abutting against a corresponding set of air blowing components; each set of air suction hoods has a set of air suction holes at its top.

[0015] The beneficial effects of this invention are:

[0016] 1. When the air in the drying chamber is drawn in by the ion fan, the cooling and dehumidification module and the heating module are activated, allowing the air to be cooled and dehumidified within the cooling and dehumidification module. Subsequently, the airflow temperature is adjusted by the heating module, and the resulting dry, cold air is obliquely blown onto the electrode plates from several sets of air blowing components, carrying away the moisture. The dry, cold air is then reflected and diffused by the electrode plates. Several sets of guide plates with curved inner walls on both sides of the electrode plates guide the reflected airflow into the air intake slot. Baffles one and two can block the airflow diffusion, so that the dry, cold air can still carry cold air into the cooling and dehumidification module after drying the electrode plates. This not only achieves self-circulation of cold air drying, avoiding contact with outside air and introducing new pollution, thus improving the performance of the drying equipment, but also reduces the energy consumption of the cooling and dehumidification operation.

[0017] 2. By pressing one set of mounting plates against the outer wall of the pipe body, aligning the connecting pipe with the threaded connection hole, and then rotating the knob to rotate the connecting pipe, the connecting pipe enters the threaded connection hole, thereby fixing the mounting plate to the pipe body. Then, place the rotating ring in the guide groove one, and then align the other set of mounting plates with the first set of mounting plates, and fix the mounting plates by rotating the knob, thereby connecting the two sets of air guide channels one and two in the two sets of mounting plates, and connecting them with the corresponding air guide grooves through several sets of corresponding air guide channels. The disassembly process is simple and quick, improving the maintenance efficiency of the drying equipment.

[0018] 3. By placing the electrode sheet between four sets of clamping plates, and then controlling two sets of clamping devices to drive the four sets of clamping plates to clamp the electrode sheet on both sides of the outer wall, the electrode sheet is positioned. When it is necessary to position electrode sheets of different widths, the two sets of rotating rods are controlled to rotate. Since one end of the adjusting spring is embedded in the spiral guide groove and cannot rotate, when the rotating rod rotates, the other end of the adjusting spring will extend and bend to push the clamping device to move in the fan-shaped sliding groove, so as to adapt to the positioning of electrode sheets of different widths, thereby improving the working compatibility of the drying equipment.

[0019] 4. By opening two sets of electromagnetic valves and simultaneously starting the ion fan, heating module, and refrigeration and dehumidification module, the dry cold air forms a self-circulation within the drying equipment. The dry cold air is blown onto both sides of the electrode through several sets of air jets on the first air jet plate and the two sets of second air jet plates, eliminating moisture on the electrode surface. After being reflected by the electrode, the air enters the return hood, achieving rapid recovery of the cold air and reducing the energy consumption of the circulating refrigeration and dehumidification operation. Furthermore, by controlling the angle of the two sets of second air jet plates, the blowing range can be adjusted, improving the energy-saving effect of the drying equipment while expanding the drying range.

[0020] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of a drying apparatus according to an embodiment of the present invention is shown. Figure 1 ; Figure 2 A schematic diagram of the structure of a drying apparatus according to an embodiment of the present invention is shown. Figure 1 ; Figure 3 A cross-sectional schematic diagram of a drying apparatus according to an embodiment of the present invention is shown; Figure 4 An exploded view of the installation and connection mechanism according to an embodiment of the present invention is shown; Figure 5 A cross-sectional schematic diagram of the air guide tube according to an embodiment of the present invention is shown; Figure 6 An exploded view of a mounting plate assembly according to an embodiment of the present invention is shown; Figure 7 An embodiment of the present invention is shown. Figure 6 An enlarged view of point A; Figure 8 A schematic diagram of the structure of the electrode limiting assembly according to an embodiment of the present invention is shown; Figure 9 A schematic diagram of the structure of the air blowing assembly according to an embodiment of the present invention is shown; Figure 10 A schematic diagram of the structure of the air intake assembly according to an embodiment of the present invention is shown.

[0023] In the diagram: 1. Sealed housing; 2. Drying chamber; 3. Ionizing fan; 4. Heating module; 5. Refrigeration and dehumidification module; 6. Solenoid valve; 7. Air guide pipe; 8. Installation and connection mechanism; 9. Winding and feeding slot; 10. Winding and feeding box; 11. Rotating ring; 12. Electrode limiting assembly; 13. Air blowing assembly; 14. Air suction assembly; 701. Pipe body; 702. Air guide slot; 703. Threaded connection hole; 801. Mounting plate; 802. Connection slot; 803. Guide slot one; 804. Air guide channel one; 805. Air guide channel two; 806. Slide groove one; 807. Slide... Block; 808, Knob; 809, Connecting pipe; 810, Air guide groove; 1201, Guide plate; 1202, Slide groove two; 1203, Clamp; 1204, Clamping plate; 1205, Rotating rod; 1206, Guide groove two; 1207, Adjusting spring; 1301, Mounting post; 1302, Rotating shaft; 1303, Jet plate one; 1304, Jet plate two; 1305, Jet hole; 1401, Suction hood; 1402, Baffle one; 1403, Suction groove; 1404, Guide plate; 1405, Baffle two; 1406, Suction hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a cold air self-circulating high-airtightness lithium battery material drying device, including a sealed housing 1. For example, as shown... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the sealed housing 1 contains a drying chamber 2; an ion fan 3 is mounted on the top of the drying chamber 2; a heating module 4 and a cooling / dehumidifying module 5 are mounted on one side wall of the sealed housing 1; a set of electromagnetic valves 6 are respectively installed between the ion fan 3 and the heating module 4, and between the heating module 4 and the cooling / dehumidifying module 5; an air guide pipe 7 is installed inside the drying chamber 2; several sets of installation and communication mechanisms 8 are equally spaced along the vertical direction on the outer wall of the air guide pipe 7; a rotating ring 11 is connected to the bottom of the installation and communication mechanism 8; several sets of electrode limiting components 12 are arranged in a circular array at the bottom of the rotating ring 11; the... Two sets of air blowing components 13 and air suction components 14 are symmetrically arranged at the bottom of the installation and connection mechanism 8; the two sets of air blowing components 13 are located on the outer and inner sides of the rotating ring 11, respectively; the rotating ring 11 is movably inserted inside; several sets of winding channels 9 are symmetrically arranged at equal intervals along the vertical direction on both inner walls of the drying chamber 2; several sets of winding boxes 10 are symmetrically arranged at equal intervals along the vertical direction on both outer walls of the sealed box 1; each set of winding boxes 10 is connected to a corresponding set of winding channels 9; the top of the air guide pipe 7, the ion fan 3, the heating module 4, the refrigeration and dehumidification module 5, and the bottom of the air guide pipe 7 are sequentially and cyclically connected.

[0026] For example, such as Figure 5 As shown, the air guide pipe 7 includes a pipe body 701; a set of air guide grooves 702 are respectively opened at the top and bottom of the pipe body 701; a number of threaded connection holes 703 are symmetrically opened on the inner wall of the two sets of air guide grooves 702; the two sets of air guide grooves 702 are respectively connected to the output end of the ion fan 3 and the input end of the refrigeration and dehumidification module 5.

[0027] During the drying process of lithium battery electrodes, several groups of cut electrodes are first fixed onto the corresponding mounting and connecting mechanisms 8. Then, the drying chamber 2 is sealed, and two sets of electromagnetic valves 6 are opened. Simultaneously, the ion fan 3, heating module 4, and cooling and dehumidifying module 5 are activated. Air from the drying chamber 2 enters several sets of suction components 14, then sequentially passes through the mounting and connecting mechanisms 8 and the bottom of the air guide pipe 7 into the cooling and dehumidifying module 5 for dehumidification. The dehumidified gas then enters the heating module 4 to adjust the gas temperature, and finally passes through the ion fan 3 to the top of the air guide pipe 7. Subsequently, after the connecting mechanism 8 is installed, the air is sprayed from several sets of blowing components 13. Both sets of electromagnetic valves 6 are equipped with chips that monitor temperature and humidity, which can monitor the temperature and humidity of the drying cold air. When the temperature and humidity of the drying cold air meet the standards, the rotating ring 11 is controlled to rotate. Through several sets of electrode limiting components 12, the electrode is driven to rotate, so that the cold air can be blown from both sides of the electrode to dry the electrode at the same time. At the same time, the cold air is self-circulated and does not come into contact with the outside air, reducing the entry of pollution sources. This improves the use effect of the drying equipment and the quality of the drying work.

[0028] For example, such as Figure 6 and Figure 7As shown, the installation and communication mechanism 8 includes two sets of semi-circular mounting plates 801; two sets of connecting grooves 802 are symmetrically opened on opposite side walls of the two sets of mounting plates 801; the inner wall of each set of connecting grooves 802 movably abuts against the outer wall of the tube body 701; two sets of guide grooves 803 are symmetrically opened at the bottom of the two sets of mounting plates 801; the two sets of guide grooves 803 combine to form an annular guide groove; the rotating ring 11 is installed in the annular guide groove; each set of mounting plates 801 is provided with a set of air guide channel 804 and air guide channel 805; each set of air guide channel 804 and air guide channel 805 is connected to another set of air guide channel 804 and air guide channel 805; the two sets of air guide channels 804 and air guide channel 805 are respectively connected to two sets of blowing components 13 and two sets of suction components 14; two sets of sliding grooves 806 are symmetrically opened at the top of the two sets of mounting plates 801. Two sets of sliders 807 are symmetrically slidably connected within the two sets of sliding grooves 806; each set of sliders 807 has a knob 808 on its top; each set of sliders 807 has a connecting pipe 809 on one side wall near the connecting groove 802; one end of each connecting pipe 809 is connected to the knob 808, and the other end is movably inserted into the corresponding set of connecting grooves 802; each set of connecting pipes 809 has a threaded groove on its outer wall near the connecting groove 802, and is threadedly connected to the threaded connecting hole 703; each set of connecting pipes 809 has several sets of air guide grooves 810 arranged in a ring array on its outer wall; the several sets of air guide grooves 810 on the two sets of connecting pipes 809 are respectively movably connected to a corresponding set of air guide channels 804 and 805; the distance between two adjacent sets of air guide grooves 810 is smaller than the inner diameter of the air guide channels 804 and 805.

[0029] During equipment installation, firstly, one set of mounting plates 801 is placed against the outer wall of the pipe body 701, aligning the connecting pipe 809 with the threaded connection hole 703. Then, the knob 808 is rotated to rotate the connecting pipe 809, causing it to enter the threaded connection hole 703, thus fixing the mounting plate 801 to the pipe body 701. Next, the rotating ring 11 is placed in the guide groove 803. Then, the other set of mounting plates 801 is aligned with the first set and fixed by rotating the knob 808, thus securing the two sets of mounting plates 801. The two sets of air guide channels 804 and 805 in the mounting plate 801 are connected and connected to the corresponding air guide grooves 702 through several sets of air guide slots 810. Then, the two sets of air guide channels 804 or 805 connected to the lower air guide groove 702 are connected to the two sets of suction components 14. After the two sets of air guide channels 804 or 805 connected to the upper air guide groove 702 are connected to the two sets of blowing components 13, the self-circulation of cold air is realized. At the same time, the disassembly process is simple and quick, which improves the maintenance efficiency of the drying equipment.

[0030] For example, such as Figure 8 As shown, the electrode limiting assembly 12 includes a fan-shaped guide plate 1201; a fan-shaped sliding groove 1202 is provided at the bottom of the guide plate 1201; two sets of clamps 1203 are symmetrically slidably connected in the sliding groove 1202; two sets of clamping plates 1204 are rotatably connected to the two output ends of each set of clamps 1203; two sets of rotating rods 1205 are symmetrically provided on the inner walls of both sides of the sliding groove 1202; a guide groove 1206 is spirally provided on the outer wall of each set of rotating rods 1205; two sets of adjusting springs 1207 are provided in the sliding groove 1202; one end of each set of adjusting springs 1207 is embedded in the corresponding set of guide grooves 1206, and the other end is connected to the corresponding set of clamps 1203.

[0031] During the drying of lithium battery electrodes, the electrodes are placed between four sets of clamping plates 1204. Then, two sets of clamps 1203 are controlled to drive the four sets of clamping plates 1204 to clamp the electrodes on both outer walls, thus completing the electrode positioning work. When it is necessary to position electrodes of different widths, the two sets of rotating rods 1205 are controlled to rotate. Since one end of the adjusting spring 1207 is embedded in the spiral guide groove 1206 and cannot rotate, when the rotating rod 1205 rotates, the other end of the adjusting spring 1207 will extend and bend to push the clamp 1203 to move in the fan-shaped sliding groove 1202, so as to adapt to the positioning work of electrodes of different widths, thereby improving the working compatibility of the drying equipment.

[0032] For example, such as Figure 9As shown, the air blowing assembly 13 includes a mounting post 1301; a rotating shaft 1302 is provided on the outer wall of the mounting post 1301; a jet plate 1303 is sleeved on the outer wall of the rotating shaft 1302; a set of rotatable jet plates 1304 are provided at the top and bottom of the jet plate 1303; a plurality of jet holes 1305 are evenly opened on the side wall of the two sets of jet plates 1304 and the jet plate 1303 away from the rotating shaft 1302.

[0033] During the drying of lithium battery electrodes, by opening two sets of electromagnetic valves 6 and simultaneously starting the ion fan 3, heating module 4, and cooling and dehumidifying module 5, the drying cold air forms a self-circulation within the drying equipment. The drying cold air is blown onto both sides of the electrode through several sets of air jet holes 1305 on the first air jet plate 1303 and the two sets of second air jet plates 1304, eliminating moisture on the electrode surface. After being reflected by the electrode, the air enters the suction assembly 14, realizing rapid recovery of the cold air and reducing the energy consumption of the circulating cooling and dehumidifying operation. Furthermore, by controlling the angle of the two sets of second air jet plates 1304, the blowing range can be adjusted, which improves the energy-saving effect of the drying equipment and expands the drying range.

[0034] For example, such as Figure 10 As shown, the air intake assembly 14 includes two sets of symmetrically arranged elliptical air intake hoods 1401; the bottom of the two sets of air intake hoods 1401 is provided with a baffle 1402; each set of air intake grooves 1403 has an air intake groove 1403 on one side wall near the baffle 1402; each set of air intake grooves 1403 has several sets of guide plates 1404 with arc-shaped inner walls that move vertically through one side wall near the baffle 1402; each set of air intake grooves 1403 has a set of baffles 1405 that are elastically hinged to the other side wall near the baffle 1402; each set of baffles 1405 moves against a corresponding set of air blowing assemblies 13; and each set of air intake hoods 1401 has an air intake hole 1406 on its top.

[0035] During the drying of lithium battery electrodes, the drying cold air is blown obliquely onto the electrodes by the blowing assembly 13. After the airflow is reflected by the electrodes, it enters the suction groove 1403 under the action of the guide plate 1404 with an inner arc surface. The baffle 1402 and the two baffles 1405 on both sides can block the diffusion of the airflow, so that the drying cold air still carries the cold energy and is directly recovered to the air intake of the cooling and dehumidification module 5 after blowing the electrodes, which reduces the cooling load and thus reduces energy consumption. Since the electrodes are usually rectangular, they form a circular trajectory when rotating around the central axis of the rotating ring. The radial width of the circular trajectory is related to the width of the electrode. Therefore, by controlling the spacing between several sets of guide plates 1404, the airflow recovery work during the cold air drying of electrodes of different sizes can be adapted, ensuring the stability of the operation.

[0036] When the air in the drying chamber 2 is drawn in by the ion fan 3, the cooling and dehumidification module 5 and the heating module 4 are activated, allowing the air to be cooled and dehumidified in the cooling and dehumidification module 5. Then, the airflow temperature is adjusted by the heating module 4, and the resulting dry cold air is obliquely blown from several sets of air blowing components 13 to the electrode to remove moisture. The dry cold air is then reflected and diffused by the electrode. Several sets of guide plates 1404 with arc-shaped inner walls on both sides of the electrode can guide the reflected airflow into the air intake slot 1403. Baffle 1 1402 and baffle 2 1405 can block the airflow diffusion, so that the dry cold air can still carry cold air into the cooling and dehumidification module 5 after drying the electrode. This not only realizes the self-circulation of cold air drying and avoids contact with the outside air to introduce new pollution, improving the use effect of the drying equipment, but also reduces the energy consumption of cooling and dehumidification.

[0037] By pressing one set of mounting plates 801 against the outer wall of the tube body 701, the connecting pipe 809 is aligned with the threaded connection hole 703. Then, the knob 808 is turned to rotate the connecting pipe 809, causing it to enter the threaded connection hole 703, thereby fixing the mounting plate 801 onto the tube body 701. The rotating ring 11 is then placed in the guide groove 1 803. The other set of mounting plates 801 is then aligned with the first set of mounting plates 801, and the mounting plate 801 is fixed by turning the knob 808. This connects the two sets of air guide channels 1 804 and air guide channel 2 805 within the two sets of mounting plates 801, and they are connected to the corresponding air guide grooves 702 through several sets of corresponding air guide slots 810. The disassembly process is simple and quick, improving the maintenance efficiency of the drying equipment.

[0038] By placing the electrode sheet between four sets of clamping plates 1204, and then controlling two sets of clamping devices 1203 to drive the four sets of clamping plates 1204 to clamp the electrode sheet on both sides of the outer wall, the electrode sheet is positioned. When it is necessary to position electrode sheets of different widths, the two sets of rotating rods 1205 are controlled to rotate. Since one end of the adjusting spring 1207 is embedded in the spiral guide groove 1206 and cannot rotate, when the rotating rod 1205 rotates, the other end of the adjusting spring 1207 will extend and bend to push the clamping device 1203 to move in the fan-shaped sliding groove 1202, so as to adapt to the positioning of electrode sheets of different widths, thereby improving the working compatibility of the drying equipment.

[0039] By opening two sets of electromagnetic valves 6 and simultaneously starting the ion fan 3, heating module 4, and cooling and dehumidifying module 5, the dry cold air forms a self-circulation within the drying equipment. The dry cold air is blown onto both sides of the electrode through several sets of jet holes 1305 on the first jet plate 1303 and the two sets of second jet plates 1304, eliminating moisture on the surface of the electrode. After being reflected by the electrode, the air enters the suction assembly 14, realizing rapid recovery of the cold air and reducing the energy consumption of the circulating cooling and dehumidifying operation. Furthermore, by controlling the angle of the two sets of second jet plates 1304, the blowing range can be adjusted, which improves the energy-saving effect of the drying equipment and expands the drying range.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cold air self-circulating high airtightness lithium battery material drying device, comprising a sealed chamber, characterized in that: The sealed enclosure contains a drying chamber; the top of the drying chamber is equipped with an ion fan; a heating module and a cooling and dehumidification module are installed on one side wall of the sealed enclosure; and an air duct is installed inside the drying chamber. The outer wall of the air guide tube is provided with several sets of installation and communication mechanisms at equal intervals along the vertical direction; the bottom of the installation and communication mechanism is connected to a rotating ring; the bottom of the rotating ring is provided with several sets of electrode limiting components in a ring array; the bottom of the installation and communication mechanism is provided with two sets of blowing components and suction components symmetrically. The air intake assembly includes two sets of symmetrically arranged elliptical air intake hoods; the bottom of the two sets of air intake hoods is provided with a baffle plate; each set of air intake slots has an air intake slot on one side wall near the baffle plate; each set of air intake slots has several sets of guide plates with arc-shaped inner walls that move vertically through one side wall near the baffle plate; and each set of air intake slots has a baffle plate two that is elastically hinged to the other side wall near the baffle plate.

2. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 1, characterized in that: A set of electromagnetic valves is provided between the ion fan and the heating module, and between the heating module and the refrigeration and dehumidification module; the two sets of air blowing components are located on the outer and inner sides of the rotating ring, respectively; the rotating ring moves through the interior; several sets of winding grooves are symmetrically arranged at equal intervals along the vertical direction on both inner walls of the drying chamber; several sets of winding boxes are symmetrically arranged at equal intervals along the vertical direction on both outer walls of the sealed box; each set of winding boxes is connected to a corresponding set of winding grooves; the top of the air guide pipe, the ion fan, the heating module, the refrigeration and dehumidification module, and the bottom of the air guide pipe are sequentially and cyclically connected.

3. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 2, characterized in that: The air guide pipe includes a pipe body; a set of air guide grooves are respectively opened at the top and bottom of the pipe body; several sets of threaded connection holes are symmetrically opened on the inner walls of the two sets of air guide grooves; the two sets of air guide grooves are respectively connected to the output end of the ion fan and the input end of the refrigeration and dehumidification module.

4. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 1, characterized in that: The installation and connection mechanism includes two sets of semi-circular mounting plates; two sets of connecting grooves are symmetrically opened on the opposite side wall of the two sets of mounting plates; the inner wall of each set of connecting grooves is movably abutting against the outer wall of the pipe body; two sets of guide grooves are symmetrically opened at the bottom of the two sets of mounting plates; the two sets of guide grooves are combined to form an annular guide groove; the rotating ring is installed in the annular guide groove.

5. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 4, characterized in that: Each set of mounting plates is provided with a set of air guide channel one and air guide channel two; each set of air guide channel one and air guide channel two is connected to another set of air guide channel one and air guide channel two; the two sets of air guide channel one and air guide channel two are respectively connected to two sets of air blowing components and two sets of air suction components.

6. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 5, characterized in that: The top of the two sets of mounting plates is symmetrically provided with two sets of sliding grooves; two sets of sliders are symmetrically slidably connected in the two sets of sliding grooves; each set of sliders is provided with a set of knobs at the top; each set of sliders is provided with a set of connecting pipes on the side wall near the connecting groove; one end of each set of connecting pipes is connected to the knobs, and the other end moves through the corresponding set of connecting grooves.

7. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 6, characterized in that: Each set of connecting pipes has a threaded groove on the outer wall of one end near the connecting groove, and is threadedly connected to the threaded connecting hole; each set of connecting pipes has several sets of air guide grooves arranged in a ring array on the outer wall; the several sets of air guide grooves on the two sets of connecting pipes are respectively movably connected to a corresponding set of air guide channel one and air guide channel two; the distance between two adjacent sets of air guide grooves is less than the inner wall diameter of air guide channel one and air guide channel two.

8. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 1, characterized in that: The electrode limiting assembly includes a fan-shaped guide plate; a fan-shaped groove is formed at the bottom of the guide plate; two sets of clamps are symmetrically slidably connected within the groove; two sets of clamping plates are rotatably connected to the two output ends of each set of clamps; two sets of rotating rods are symmetrically arranged on the inner walls of both sides of the groove; a guide groove is spirally formed on the outer wall of each set of rotating rods; two sets of adjusting springs are provided inside the groove; one end of each adjusting spring is embedded in a corresponding set of guide grooves, and the other end is connected to a corresponding set of clamps.

9. The cold air self-circulating high airtightness lithium battery material drying equipment according to claim 1, characterized in that: The air blowing assembly includes a mounting column; a rotating shaft is provided on the outer wall of the mounting column; a first air jet plate is fitted on the outer wall of the rotating shaft; a set of second air jet plates that can rotate are respectively provided at the top and bottom of the first air jet plate; several sets of air jet holes are evenly opened on the side wall of the two sets of second air jet plates and the first air jet plate away from the rotating shaft.

10. A cold air self-circulating high airtightness lithium battery material drying device according to claim 1, characterized in that: Each set of baffles 2 is movable and abuts against a corresponding set of air blowing components; each set of air suction hoods has a set of air suction holes at the top.

Images