Intelligent aluminum coil annealing device for lithium battery production

Abstract

The invention relates to the technical field of metal processing, in particular to an intelligent aluminum coil annealing device for lithium battery production, which comprises an annealing furnace, a moving assembly, a furnace door and the like, a moving assembly is mounted on the front side of the annealing furnace; the moving assembly is connected with a furnace door; heaters are arranged on the inner wall of the annealing furnace. Gas in the annealing cavity is replaced by argon to serve as protective gas, it can be effectively guaranteed that the aluminum coil does not chemically react with the gas in the annealing cavity when heated at high temperature, and therefore the annealing quality of the aluminum coil is guaranteed, the aluminum coil can be effectively prevented from generating an aluminum oxide film in the annealing process, and the service life of the aluminum coil is prolonged. Therefore, when the aluminum coil is used as a lithium battery production material, the electrical conductivity and thermal conductivity of the aluminum coil can be effectively guaranteed, the quality of the aluminum coil is improved, airflow is guided to be blown to the filter screen through the convex cambered surface of the second baffle, impurities on the annealing cavity are intercepted through the filter screen, the impurities on the side wall of the annealing cavity are cleaned, and the service life of the aluminum coil is prolonged. Impurities on the side wall of the annealing cavity are prevented from falling on the surface of the aluminum coil due to blowing of airflow.

Description

Technical Field

[0001] The present invention relates to the technical field of metal processing, and in particular to an intelligent annealing device for aluminum coils used in lithium battery production. Background Art

[0002] Since aluminum coils have good thermal conductivity and corrosion resistance, they are often used as materials for manufacturing lithium battery shells. After cold rolling, aluminum coils usually need to undergo an annealing process. The operation of the annealing process is to place the aluminum coils on a fixed rack in sequence, and then place the fixed rack and the aluminum coils in an annealing furnace through a transfer platform. The aluminum coils are then heated for a period of time in the annealing furnace, and then the aluminum coils are taken out of the annealing furnace and sent into water for cooling. In this way, the annealing process of the aluminum coils is completed. In this process, the aluminum coils are easily reacted with oxygen in the air after being heated to form a dense aluminum oxide film. As a material for producing lithium batteries, the aluminum oxide film is likely to affect the electrical conductivity and thermal conductivity of the aluminum coils, thereby reducing the quality of the aluminum coils. In addition, during the process of transferring the aluminum coils to the annealing furnace, dust impurities are easily attached to the surface of the aluminum coils. After the aluminum coils are heated, the impurities on their surface are easily integrated with the aluminum coils, thereby increasing the impurities in the aluminum coils, further reducing the quality of the aluminum coils. Summary of the invention

[0003] In order to overcome the disadvantages that during the annealing process of the aluminum coil, its surface is easily oxidized to form a dense aluminum oxide film, which easily affects the electrical conductivity and thermal conductivity, and dust impurities are easily attached to the surface of the aluminum coil. When the aluminum coil is heated, the impurities on the surface are easily integrated with the aluminum coil, thereby increasing the impurities in the aluminum coil and reducing the quality of the aluminum coil, the present invention provides an intelligent annealing device for aluminum coils for lithium battery production.

[0004] The technical implementation scheme of the present invention is as follows: an intelligent annealing device for aluminum coils for lithium battery production, comprising an annealing furnace, a moving assembly and a furnace door; the moving assembly is installed on the front side of the annealing furnace; the furnace door is connected to the moving assembly; it also comprises a fixed bottom plate, a connecting pipe, an exhaust pipe, a first air inlet pipe, a second air inlet pipe and a partition; a partition is fixedly connected to the inner side of the annealing furnace; an annealing chamber is formed between the lower side of the partition and the annealing furnace; an air supply chamber is formed between the upper side of the partition and the annealing furnace; a plurality of first exhaust channels are opened on the partition; the annealing chamber and the air supply chamber are connected through the first exhaust channel; a fixed bottom plate is placed in the annealing chamber; a plurality of left-right symmetrical and right-left symmetrical aluminum coils are fixedly connected to the fixed bottom plate Support block; four air suction grooves arranged in a rectangular shape are provided on the fixed bottom plate; each air suction groove is connected to a gas delivery channel; a gas collecting channel is provided inside the fixed bottom plate, and all the gas delivery channels are connected to the gas collecting channel; a connecting pipe is connected to the rear side of the gas collecting channel; an exhaust pipe is fixedly connected to the annealing furnace; the exhaust pipe is connected to the annealing chamber, and the exhaust pipe is connected to an external exhaust device; the exhaust pipe and the connecting pipe are sleeved and matched; a first air inlet pipe is fixedly connected to the annealing furnace; the first air inlet pipe is connected to the annealing chamber, and the first air inlet pipe is connected to an external argon storage device; a second air inlet pipe is provided on the upper side of the annealing furnace; the second air inlet pipe is connected to the air supply chamber, and the second air inlet pipe is connected to the external air supply device.

[0005] More preferably, a plurality of second exhaust passages for cleaning the side walls of the annealing chamber are provided on the partition plate; each second exhaust passage faces the four walls of the annealing chamber.

[0006] More preferably, a plurality of guide grooves are provided at the bottom of the annealing furnace; a plurality of limiting protrusions are provided at the lower side of the fixed bottom plate; and each limiting protrusion is slidably matched with an adjacent guide groove.

[0007] More preferably, it also includes a guide plate; a plurality of guide plates are fixedly connected to the fixed bottom plate, and each guide plate is respectively located at the front and rear sides of the corresponding support block; the guide plates on the front and rear sides of the same support block are arranged in an inverted eight-shaped shape; the guide plates are configured as arc-shaped plates.

[0008] More preferably, a protrusion is provided on the fixed bottom plate; the protrusion is in the shape of a quadrangular pyramid.

[0009] More preferably, the gas delivery channel and the gas collecting channel are both arranged in an inclined shape, that is, the height of the gas delivery channel near the outer edge of the fixed bottom plate is higher than the height near the center of the fixed bottom plate, and the height of the gas collecting channel near the outer edge of the fixed bottom plate is lower than the height at the center of the fixed bottom plate.

[0010] More preferably, it also includes a filter screen and a first baffle; four filter screens arranged in a rectangular shape are installed on the fixed bottom plate to intercept dust or metal particle impurities in the air flow; each filter screen is located on the upper side of an adjacent air suction groove; and a first baffle is installed on each of the four sides of the fixed bottom plate to facilitate the collection of dust impurities.

[0011] More preferably, a second baffle is further included; a plurality of second baffles arranged in a rectangular shape are fixedly connected around the fixed bottom plate to facilitate the flow of impurities on the side wall of the annealing chamber to the filter screen; the second baffle is located above the first baffle and is arranged in a convex arc shape.

[0012] More preferably, the fixed base plate and its connecting parts are made of high temperature resistant alloy material.

[0013] More preferably, the first baffle is arranged to be rotatably connected to the fixed bottom plate via a torsion spring; in an initial state, the first baffle is in contact with the side wall of the fixed bottom plate; and the filter is arranged to be tilted downward.

[0014] The beneficial effects of the present invention are: By replacing the gas in the annealing chamber with argon as the protective gas, it can be effectively ensured that the aluminum coil will not chemically react with the gas in the annealing chamber when heated at high temperature, thereby ensuring the annealing quality of the aluminum coil. This can effectively prevent the aluminum coil from forming an aluminum oxide film during the annealing process, so that when the aluminum coil is used as a lithium battery production material, its electrical conductivity and thermal conductivity can be effectively guaranteed, thereby improving the quality of the aluminum coil; The convex arc surface of the second baffle guides the airflow to the filter, so that the impurities on the annealing chamber are intercepted by the filter, thereby cleaning the impurities on the side wall of the annealing chamber and preventing the impurities on the side wall of the annealing chamber from falling on the surface of the aluminum coil due to the blowing of the airflow; The aluminum coil is quickly cooled by the water in the pool, and the impurities attached to the aluminum coil during the transportation process are cleaned. The impurities collected on the filter are cleaned during the cooling of the aluminum coil, eliminating the need for additional manual cleaning of the filter and improving the cleaning efficiency. Compared with the upper surface plane of the fixed bottom plate, when the protrusion gradually rises, the water flow left from the aluminum coil continues to flow downward to the filter screen through the four-sided pyramid surface, thereby preventing the water flow from carrying impurities and accumulating on the surface of the fixed bottom plate, thereby improving the cleaning effect of the fixed bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the intelligent annealing device for aluminum coils used in lithium battery production of the present invention; Figure 2 is a cross-sectional view of an annealing furnace of the present invention; Figure 3 It is a schematic diagram of the combined three-dimensional structure of the connecting pipe, the air extraction pipe, and the first air intake pipe of the present invention; Figure 4 It is a cross-sectional view of the annealing furnace and the partition assembly of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the fixed bottom plate of the present invention; Figure 6is a cross-sectional view of a fixed base plate of the present invention; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 It is a schematic diagram of a three-dimensional structure of a fixed bottom plate, a first baffle plate and a second baffle plate of the present invention, wherein the first baffle plate is in an open state; Fig. 9 It is a combined cross-sectional view of the filter screen, the first baffle and the second baffle of the present invention.

[0016] Among them, the above-mentioned drawings include the following figure marks: 1-annealing furnace, 1001-annealing chamber, 1002-heater, 1003-air supply chamber, 1004-guide groove, 2-movable component, 3-furnace door, 4-fixed bottom plate, 4001-support block, 4002-lifting point, 4003-intake groove, 4004-gas transmission channel, 4005-gas collecting channel, 4006-protrusion, 4007-limiting protrusion, 5-aluminum coil, 6-connecting pipe, 7-exhaust pipe, 8-first air inlet pipe, 9-second air inlet pipe, 201-partition, 20101-first exhaust channel, 20102-second exhaust channel, 202-filter, 203-first baffle, 204-second baffle, 205-guide plate. DETAILED DESCRIPTION

[0017] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0018] Example 1 like Figure 1-Figure 7 As shown, an intelligent annealing device for aluminum coils used in lithium battery production includes an annealing furnace 1, a moving assembly 2 and a furnace door 3; the moving assembly 2 is installed on the front side of the annealing furnace 1; the furnace door 3 is connected to the moving assembly 2; the moving assembly 2 includes an electric track and an electric slide, and the furnace door 3 is driven to move up and down along the electric track by the electric slide; a heater 1002 is arranged on the inner wall of the annealing furnace 1; an external track translation vehicle is arranged on the front side of the furnace door 3, and the track translation vehicle can move on the track; a fork that can move forward and backward is arranged on the external track translation vehicle; It also includes a fixed bottom plate 4, a connecting pipe 6, an exhaust pipe 7, a first air inlet pipe 8, a second air inlet pipe 9 and a partition 201; a partition 201 is fixedly connected to the upper inner side of the annealing furnace 1; an annealing chamber 1001 is formed between the lower side of the partition 201 and the annealing furnace 1; an air supply chamber 1003 is formed between the upper side of the partition 201 and the annealing furnace 1; a plurality of first exhaust channels 20101 are opened in the middle of the partition 201; the annealing chamber 1001 and the air supply chamber 1003 are connected through the first exhaust channel 20101; a fixed bottom plate 4 is placed in the annealing chamber 1001; a plurality of left-right symmetrical support blocks 4001 are fixedly connected to the fixed bottom plate 4; a plurality of left-right symmetrical lifting points 4002 are fixedly connected to the fixed bottom plate 4; four rectangularly arranged air suction grooves 4003 are opened on the fixed bottom plate 4; each air suction groove 4003 is connected to a gas transmission channel 4004, and all gas transmission channels 4004 are connected to each other. The channel 4004 intersects at the middle of the fixed bottom plate 4; a gas collecting channel 4005 is opened inside the fixed bottom plate 4, and all the intersections of the gas transmission channels 4004 are connected to the gas collecting channel 4005; a connecting pipe 6 is connected to the rear side of the gas collecting channel 4005; an exhaust pipe 7 is fixedly connected to the rear side of the annealing furnace 1; the exhaust pipe 7 is connected to the annealing chamber 1001, and the exhaust pipe 7 is connected to an external exhaust device; the exhaust pipe 7 and the connecting pipe 6 are sleeved and matched; a first air inlet pipe 8 is fixedly connected to the rear side of the annealing furnace 1; the first air inlet pipe 8 is connected to the annealing chamber 1001, and the first air inlet pipe 8 is connected to an external argon storage device, and the external argon storage device has an exhaust function; a second air inlet pipe 9 is arranged on the upper side of the annealing furnace 1; the second air inlet pipe 9 is connected to the air supply chamber 1003, and the second air inlet pipe 9 is connected to the external air supply device; the exhaust pipe 7, the first air inlet pipe 8, and the second air inlet pipe 9 are all connected to electric valves.

[0019] Two second exhaust channels 20102 are opened on four sides of the partition plate 201 ; each second exhaust channel 20102 faces four walls of the annealing chamber 1001 .

[0020] Two left-right symmetrical guide grooves 1004 are provided at the bottom of the annealing furnace 1 ; two left-right symmetrical limiting protrusions 4007 are provided at the lower side of the fixed bottom plate 4 ; each limiting protrusion 4007 is slidably matched with the adjacent guide groove 1004 .

[0021] It also includes a guide plate 205; a plurality of guide plates 205 are fixedly connected to the fixed bottom plate 4, and each guide plate 205 is respectively located at the front and rear sides of the corresponding support block 4001; the guide plates 205 on the front and rear sides of the same support block 4001 are arranged in an inverted eight-shaped shape; the guide plate 205 is set as an arc-shaped plate.

[0022] Furthermore, in order to reduce the amount of impurities adhering to the upper surface of the fixed bottom plate 4 and improve the cleaning efficiency of dust impurities, a protrusion 4006 is provided on the fixed bottom plate 4; the shape of the protrusion 4006 is set to be a quadrangular pyramid.

[0023] Furthermore, in order to avoid water accumulation inside the fixed bottom plate 4, the gas supply channel 4004 and the gas collecting channel 4005 are both arranged to be inclined, that is, the height of the gas supply channel 4004 near the outer edge of the fixed bottom plate 4 is higher than the height near the center of the fixed bottom plate 4, and the height of the gas collecting channel 4005 near the outer edge of the fixed bottom plate 4 is lower than the height at the center of the fixed bottom plate 4.

[0024] It also includes a filter screen 202 and a first baffle plate 203; four filter screens 202 arranged in a rectangular shape are installed on the fixed bottom plate 4; each filter screen 202 is located on the upper side of the adjacent air suction groove 4003; a first baffle plate 203 is installed on each of the four sides of the fixed bottom plate 4.

[0025] It also includes a second baffle 204; four second baffles 204 arranged in a rectangular shape are fixedly connected around the fixed bottom plate 4; the second baffle 204 is located above the first baffle 203, and the second baffle 204 is set to a convex arc shape.

[0026] Furthermore, since the fixed base plate 4 and its connecting parts need to withstand the same high temperature as the aluminum coil 5 in the annealing chamber 1001, in order to ensure that the functions of the fixed base plate 4 and its connecting parts are not affected by the high temperature in the annealing chamber 1001, thereby avoiding defects such as deformation or breakage, the fixed base plate 4 and its connecting parts are configured to be made of high-temperature resistant alloy materials.

[0027] After the aluminum material is formed by cold rolling and winding into the aluminum coil 5, it is usually necessary to perform an annealing operation, and the aluminum coil 5 needs to be heated to 400°C. Aluminum is very easy to react with oxidation at high temperature, resulting in the formation of an aluminum oxide film on the surface of the aluminum coil 5. When the aluminum coil 5 is used as a material for producing lithium batteries, the aluminum oxide film formed on its surface is easy to affect the electrical conductivity and thermal conductivity of the lithium battery, thereby affecting the quality of the aluminum coil 5. Therefore, during the annealing process of the aluminum coil 5, it is necessary to reduce the generation of the aluminum oxide film. On this basis, if dust impurities adhere to the surface of the aluminum coil 5 during the annealing operation, During the coiling process, the impurities on the aluminum coil 5 are easily integrated with the aluminum coil 5, thereby increasing the impurities in the aluminum coil 5 and reducing the quality of the aluminum coil 5. Therefore, during the coiling process, the dust on the surface of the aluminum coil 5 can be cleaned by the dust removal mechanism on the coiling device, and before the aluminum coil 5 is annealed, the dust impurities on the surface of the aluminum coil 5 are usually cleaned. However, during the process of transferring the cleaned aluminum coil 5 to the annealing furnace 1, it is inevitable that the aluminum coil 5 is attached to dust impurities in the outside air, which affects the annealing quality of the aluminum coil 5. Therefore, the annealing process of the aluminum coil 5 is described in detail below: Before the annealing process, the furnace door 3 is opened. First, the lifting machine lifts the lifting point 4002 of the fixed bottom plate 4 to lift it onto the fork of the external rail translation vehicle. Then, the lifting machine is used to lift the aluminum coil 5 on the support block 4001 on the fixed bottom plate 4 in turn. The aluminum coil 5 is carried by the support block 4001. Then, the external rail translation vehicle is controlled to move on the track so that the fixed bottom plate 4 is aligned with the annealing chamber 1001 and moved to the outside of the furnace door 3. Then, the fork of the external rail translation vehicle is controlled to move backward, so that the fixed bottom plate 4 and its connecting parts and the carried aluminum coil 5 are moved backward into the annealing chamber 1001. When the fixed bottom plate 4 enters the annealing chamber 1001, the synchronous belt The movable connecting pipe 6 and the second baffle plate 204 enter the annealing chamber 1001. At this time, the limiting protrusion 4007 on the lower side of the fixed bottom plate 4 is inserted into the corresponding guide groove 1004, so that the center position of the fixed bottom plate 4 is aligned with the center position of the annealing chamber 1001, and it is ensured that the fixed bottom plate 4 will not be displaced in the left and right directions during the backward movement. Then, the fixed bottom plate 4 is pushed to move backward continuously by the external track translation vehicle until the second baffle plate 204 at the rear side is in contact with the rear side wall of the annealing chamber 1001. At this time, the connecting pipe 6 is inserted into the exhaust pipe 7 to connect the exhaust pipe 7 with the connecting pipe 6, and the fixed bottom plate 4 is controlled to stop moving, and then the fork of the external track translation vehicle is controlled to move from the bottom of the fixed bottom plate 4. The furnace door 3 is moved forward until it is withdrawn from the annealing chamber 1001, and then the electric track on the moving component 2 is controlled to drive the furnace door 3 to move downward to a closed state, so that the furnace door 3 is tightly fitted with the annealing furnace 1, thereby ensuring that the annealing chamber 1001 is in a sealed state, and at this time, the second baffle 204 is in a fitted state with the four walls in the annealing chamber 1001, and then the heater 1002 is controlled to start working, so that the temperature in the annealing chamber 1001 gradually rises to the set temperature. After heating the aluminum coil 5 for a set time, the heater 1002 is turned off, so that the aluminum coil 5 is kept warm in the annealing chamber 1001 for a period of time, and then the temperature is slowly cooled in the annealing chamber 1001. When the temperature drops below 50°C, the heater 1002 is controlled to start working. The moving assembly 2 drives the furnace door 3 to move upward so that the furnace door 3 is in an open state, and then controls the fork of the external rail translation vehicle to move backward so that the fork is inserted into the bottom of the fixed bottom plate 4, and then controls the fork to move forward, so as to take the fixed bottom plate 4 and its connecting parts and the aluminum coil 5 out of the annealing chamber 1001, and then the fixed bottom plate 4 drives the aluminum coil 5 to be hoisted to the water pool by the lifting machinery, and the fixed bottom plate 4 and the aluminum coil 5 are soaked in water, so as to quickly cool down the aluminum coil 5, and at the same time, the surface of the aluminum coil 5 is cleaned with water. When the aluminum coil 5 is cooled, the fixed bottom plate 4 and the aluminum coil 5 are lifted by the lifting machinery and transferred to the drying equipment for drying, thus completing the annealing of the aluminum coil 5.

[0028] In the above process, when the aluminum coil 5 is transferred from the outside to the annealing chamber 1001, dust impurities will inevitably adhere to the surface of the aluminum coil 5. When the aluminum coil 5 is annealed, the dust impurities are easily integrated with the aluminum coil 5, thereby increasing the impurities in the aluminum coil 5 and reducing the annealing quality of the aluminum coil 5. For this reason, when the furnace door 3 is in a closed state and the annealing chamber 1001 is in a sealed state, the electric valves on the exhaust pipe 7 and the second air inlet pipe 9 are controlled to open, and the electric valve on the first air inlet pipe 8 is closed. Clean and dust-free air is pumped into the second air inlet pipe 9 through the external air supply device. In this way, dust-free air enters the air supply chamber 1003 through the second air inlet pipe 9, and then blows into the annealing chamber 1001 through the first exhaust channel 20101. At the same time, the external exhaust device is controlled to start exhausting the exhaust pipe 7, so that the air in the annealing chamber 1001 enters the air supply channel from the air suction groove 4003. 4004, and then successively passes through the air collecting channel 4005 and the connecting pipe 6, and is finally discharged from the exhaust pipe 7 to the external exhaust device, so that the air forms a high-speed airflow flowing from top to bottom in the annealing chamber 1001, so that the airflow blows through the surface of the aluminum coil 5 to blow away the dust impurities on the surface of the aluminum coil 5, thereby preventing the subsequent impurities from being integrated with the aluminum coil 5 at high temperature, thereby improving the annealing quality of the aluminum coil 5, and the dust impurities in the air are intercepted by the filter screen 202 on the upper side of the air suction groove 4003, so that the dust impurities are intercepted on the surface of the filter screen 202, and the dust is prevented from entering the air suction groove 4003 and the air delivery channel 4004 and adhering to the inner wall thereof, thereby avoiding the increase of the additional workload of cleaning the inner wall of the air suction groove 4003 and the air delivery channel 4004, and at the same time, the dust impurities on the filter screen 202 are collected by the first baffle 203 to prevent the dust impurities from falling from the edge of the fixed bottom plate 4.

[0029] On this basis, since the lower half of the aluminum coil 5 is on the leeward side of the airflow, when the airflow flows from top to bottom, the lower half of the aluminum coil 5 cannot be directly blown by the airflow, resulting in limited dust cleaning ability of the airflow on the surface of the lower half of the aluminum coil 5. Therefore, by providing guide plates 205 arranged in an inverted eight shape on both sides of the aluminum coil 5, when the airflow blows downward through the guide plates 205, the guide plates 205 guide the airflow to blow to the lower half of the aluminum coil 5, and then blow away the dust impurities on the surface of the lower half of the aluminum coil 5, thereby improving the cleaning effect of the airflow on the surface of the aluminum coil 5, thereby improving the production quality of the aluminum coil 5. Furthermore, since dust impurities are also easily attached to the inner wall of the annealing chamber 1001, and when the aluminum coil 5 is annealed, the dust impurities on the inner wall of the annealing chamber 1001 are also easily attached to the surface of the aluminum coil 5, it is necessary to clean and maintain the inner wall of the annealing chamber 1001. To this end, a second exhaust channel 20102 is opened on the partition plate 201, so that part of the air in the air supply chamber 1003 is blown to the adjacent side wall of the annealing chamber 1001 through the second exhaust channel 20102. In this way, the air is blown to the four side walls of the annealing chamber 1001, thereby blowing off the impurities on the side walls. Moreover, at this time, the second baffles 204 are respectively attached to the side walls of the adjacent annealing chambers 1001, and the air flows downward along the side walls of the annealing chamber 1001 until it meets the second baffle 204. The convex arc surface of the second baffle 204 guides the airflow to the filter 202, so that the impurities on the annealing chamber 1001 are intercepted by the filter 202, so as to clean the impurities on the side walls of the annealing chamber 1001, and prevent the impurities on the side walls of the annealing chamber 1001 from falling on the surface of the aluminum coil 5 due to the blowing of the airflow. On this basis, when the air is blown downward from the first exhaust channel 20101 to the aluminum coil 5, Some impurities will adhere to the upper surface of the fixed bottom plate 4, and the area of ​​the upper surface of the fixed bottom plate 4 is relatively large, and the subsequent cleaning workload of the surface of the fixed bottom plate 4 is large. For this reason, a protrusion 4006 in the shape of a quadrangular pyramid is provided on the fixed bottom plate 4. When the airflow blows toward the protrusion 4006, the air is guided to blow toward the filter 202 through the quadrangular pyramid surface of the protrusion 4006, so that the impurities on the surface of the fixed bottom plate 4 are gathered on the upper surface of the filter 202. In this way, the amount of impurities attached to the upper surface of the fixed bottom plate 4 is reduced, and subsequently only the impurities on the filter 202 need to be cleaned, thereby improving the cleaning efficiency.

[0030] Compared with the conventional method of cleaning the aluminum coil 5, before annealing the aluminum coil 5 and after the aluminum coil 5 is first fed into the annealing chamber 1001, the dust in the outside air is isolated by the sealed annealing chamber 1001, and then the aluminum coil 5 is pre-cleaned by a clean airflow, so that the dust impurities on the surface of the aluminum coil 5 are blown away by the airflow, thereby ensuring the quality of the subsequent annealing of the aluminum coil 5, and the airflow is guided to blow toward the inner wall of the annealing chamber 1001 through the second exhaust channel 20102, so that the inner wall of the annealing chamber 1001 is simultaneously The dust impurities are cleaned, thereby eliminating the need to frequently clean and maintain the inner wall of the annealing chamber 1001, reducing the maintenance difficulty of the annealing furnace 1, and at the same time, the dust impurities on the aluminum coil 5 and the inner wall of the annealing chamber 1001 are intercepted and collected by the filter screen 202, so that when the fixed bottom plate 4 and the aluminum coil 5 are moved out of the annealing chamber 1001, the dust impurities are transferred out of the annealing chamber 1001 together, thereby reducing the workload of the staff for cleaning the aluminum coil 5 and the annealing chamber 1001, and improving production efficiency.

[0031] In the above process, after the dust and impurities on the surface of the aluminum coil 5 are cleaned, the aluminum coil 5 needs to be heated. Since the aluminum coil 5 reacts violently with oxygen in the air at high temperature, an aluminum oxide film is easily formed on the surface of the aluminum coil 5. When such an aluminum coil 5 is used as a material for producing lithium batteries, it is easy to affect the electrical conductivity and thermal conductivity. Therefore, after the dust and impurities on the surface of the aluminum coil 5 are cleaned, the electric valve on the exhaust pipe 7 is controlled to be in an open state, and the valves on the first intake pipe 8 and the second intake pipe 9 are in a closed state, and then The external exhaust device is controlled to exhaust air to the exhaust pipe 7. At this time, the exhaust pipe 7 is connected with the connecting pipe 6, so that the air in the annealing chamber 1001 and the air supply chamber 1003 enters the gas transmission channel 4004 from the suction groove 4003, and then passes through the gas collecting channel 4005 and the connecting pipe 6 in sequence, and is finally discharged from the exhaust pipe 7 to the external exhaust device, so that the annealing chamber 1001 and the air supply chamber 1003 are in a vacuum state. Then, the electric valve on the exhaust pipe 7 is controlled to be in a closed state, and the electric valve on the first air inlet pipe 8 is controlled to be in a closed state. The argon gas storage device is in the open state, and then the external argon gas storage device is controlled to continuously deliver argon gas to the first air inlet pipe 8, so that the argon gas enters the annealing chamber 1001. Since the annealing chamber 1001 and the air supply chamber 1003 are in a connected state, the annealing chamber 1001 and the air supply chamber 1003 are filled with argon gas until the annealing chamber 1001 is in a normal air pressure state, and then the electric valve on the first air inlet pipe 8 is controlled to be in a closed state. At this time, the annealing chamber 1001 is in a sealed state, and then the heater 1002 is controlled to start working, and the annealing chamber 1001 is started. The aluminum coil 5 is subjected to annealing operation. Since argon is an inert gas and does not chemically react with the aluminum coil 5, the gas in the annealing chamber 1001 is replaced with argon as a protective gas, which can effectively ensure that the aluminum coil 5 does not chemically react with the gas in the annealing chamber 1001 when heated at a high temperature, thereby ensuring the annealing quality of the aluminum coil 5. In this way, the aluminum coil 5 can be effectively prevented from forming an aluminum oxide film during the annealing process, so that when the aluminum coil 5 is used as a lithium battery production material, its electrical conductivity and thermal conductivity can be effectively guaranteed, thereby improving the quality of the aluminum coil 5.

[0032] When the aluminum coil 5 is continuously heated for a set time, the heater 1002 is controlled to stop heating, so that the temperature in the annealing chamber 1001 naturally drops to below 50°C. At this temperature, the aluminum coil 5 will not react violently with oxygen, and then the electric valve on the first air inlet pipe 8 is controlled to be in an open state, and then the external argon storage device starts to evacuate the first air inlet pipe 8, so that the argon in the annealing chamber 1001 is evacuated until the annealing chamber 1001 is in a vacuum state, so as to realize the recovery of argon, and then the electric valve on the first air inlet pipe 8 is controlled to be in a closed state, and the electric valve on the second air inlet pipe 9 is controlled to be in an open state, and then the external air supply device is controlled to transport air into the annealing chamber 1001 until the air pressure in the annealing chamber 1001 is restored to be consistent with the outside world, and then the moving component 2 is controlled to open the furnace door 3, so as to facilitate the subsequent transfer of the aluminum coil 5.

[0033] After the aluminum coil 5 is transferred out of the annealing chamber 1001, it is necessary to cool the aluminum coil 5 quickly. The lifting machine is controlled to lift the fixed bottom plate 4 and the aluminum coil 5 to the bottom of an empty pool, that is, there is no water in the pool, and the external water pipeline is manually connected to the connecting pipe 6, and then water is started to be transported into the connecting pipe 6 through the external water pipeline, so that the water quickly enters the gas collecting channel 4005 through the connecting pipe 6, and then flows into the four gas delivery channels 4004 respectively, and then rushes out from the suction groove 4003, and finally enters the inner side of the fixed bottom plate 4. With the continuous water injection, the water level inside the fixed bottom plate 4 gradually rises. In this process, the direction of water flow is from the air collecting channel 4005 to the outside of the filter screen 202, and the filter screen 202 is backwashed by the water flow, so as to flush away some impurities stuck on the filter screen 202, which is convenient for the subsequent cleaning of impurities on the surface of the filter screen 202. As the water level inside the fixed bottom plate 4 continues to rise, the filter screen 202, the first baffle plate 203 and the second baffle plate 204 are successively submerged, and the water inside the fixed bottom plate 4 begins to flow to the bottom of the pool. As the external water pipeline continues to supply water, the water level in the pool gradually rises until the water in the pool is higher than the second baffle plate 204, and the filter screen is The dust impurities on the upper surface of 202 are suspended in the pool with the water flow. It is explained here that the height of the drain valve in the pool is higher than the height of the second baffle 204 and lower than the height of the support block 4001. When the water in the pool rises to the drain valve position, the drain valve is opened to make the water in the pool flow, so that the dust impurities suspended in the pool are taken away by the flowing water, so that the impurities are cleaned, and the water flowing out of the pool can be recycled again after being filtered to save water. When all the impurities in the pool have flowed out of the pool, the drain valve is closed again, and as the water level continues to rise until the water in the pool is When the water is above the aluminum coil 5, the external water supply device is controlled to stop supplying water. At the same time, the aluminum coil 5 is quickly cooled by the water in the pool, and the impurities attached to the aluminum coil 5 during the transfer process are cleaned. The impurities collected on the filter 202 are cleaned during the cooling of the aluminum coil 5, thereby eliminating the need for additional manual cleaning of the filter 202 and improving the cleaning efficiency. The filter 202 is reversely flushed by water flow to flush away the impurities stuck on the filter 202, thereby improving the cleaning quality of the filter 202. At the same time, the aluminum coil 5 is cleaned by water to improve the cleanliness of the aluminum coil 5.

[0034] When the aluminum coil 5 is cooled, the external water pipe is first removed from the connecting pipe 6. At this time, the lifting machinery is controlled to drive the fixed bottom plate 4 and the aluminum coil 5 to move upward, so that the aluminum coil 5 and the fixed bottom plate 4 gradually leave the water pool. In this process, due to the inevitable residual impurities in the water, when the aluminum coil 5 rises to the water surface, the water remaining on the aluminum coil 5 flows downward to the protrusion 4006, thereby driving the impurities in the water to flow to the protrusion 4006. Compared with the upper surface plane of the fixed bottom plate 4, when the protrusion 4006 gradually rises, the water flow left from the aluminum coil 5 continues to flow downward to the filter screen 202 through the four-sided pyramid surface, thereby preventing the water flow from carrying impurities and accumulating on the surface of the fixed bottom plate 4, thereby improving the fixed bottom plate 4. The cleaning effect is achieved, and the water on the inner side of the fixed bottom plate 4 first enters the air suction groove 4003, and then enters the air collecting channel 4005 through the air delivery channel 4004, and then is discharged from the connecting pipe 6. In this process, the air delivery channel 4004 and the air collecting channel 4005 are set to be inclined, that is, the height of the air delivery channel 4004 near the outer edge of the fixed bottom plate 4 is higher than the height near the center of the fixed bottom plate 4, and the height of the air collecting channel 4005 near the outer edge of the fixed bottom plate 4 is lower than the height at the center of the fixed bottom plate 4, thereby ensuring that the water flow in the air delivery channel 4004 and the air collecting channel 4005 is completely discharged from the connecting pipe 6, avoiding the occurrence of water accumulation inside the fixed bottom plate 4.

[0035] Example 2 Based on Example 1, Figure 6 , Figure 8 and Fig. 9 As shown, further, in order to improve the cleaning effect of the filter 202, the first baffle 203 is configured to be rotatably connected to the fixed bottom plate 4 through a torsion spring; in the initial state, the first baffle 203 is in contact with the side wall of the fixed bottom plate 4; the filter 202 is configured to be tilted downward.

[0036] During the working process of Example 1, although the backwashing of the filter screen 202 by water can separate most of the impurities adhering to the filter screen 202, the water at the filter screen 202 is blocked by the side wall of the fixed bottom plate 4 and the second baffle 204, which reduces the fluidity of the water, thereby reducing the recoil force of the water on the filter screen 202. Therefore, a small amount of impurities still adhere to the surface of the filter screen 202, reducing the cleaning effect of the filter screen 202. Therefore, by setting the first baffle 203 to be connected to the fixed bottom plate 4 through the torsion spring, the first baffle 203 and the fixed bottom plate 4 are connected in the initial state. The side walls of the bottom plate 4 are fitted, and because the second baffle plate 204 is higher than the first baffle plate 203, the water inside the fixed bottom plate 4 cannot flow out over the second baffle plate 204. Therefore, in the subsequent process of lifting the fixed bottom plate 4 upward, until the bottom of the fixed bottom plate 4 is separated from the water surface, a large amount of water remains inside the fixed bottom plate 4. The water inside the fixed bottom plate 4 will pass through the air suction groove 4003, the air transmission channel 4004, the air collection channel 4005 and the connecting pipe 6 in sequence, and finally flow back into the pool. However, the water output of the connecting pipe 6 is limited, and the water inside the fixed bottom plate 4 cannot be discharged in a short time. Therefore, under the pressure of the water inside the fixed bottom plate 4, the lower end of the first baffle 203 rotates outward, and the torsion spring between the first baffle 203 and the fixed bottom plate 4 is compressed, so that a gap is generated between the first baffle 203 and the fixed bottom plate 4, and the water in the second baffle 204 flows out from the gap between the first baffle 203 and the fixed bottom plate 4, so that the water in the second baffle 204 directly flushes the surface of the filter screen 202, thereby flushing away the residual impurities adhering to the filter screen 202, thereby improving the cleaning effect of the filter screen 202. On this basis, Compared with being in a horizontal position, by setting the filter screen 202 to be tilted downward, it is convenient for water to flow downward along the tilted surface of the filter screen 202, thereby preventing water from directly passing through the filter screen 202 and causing impurities to be stuck in the filter screen 202. As the water in the second baffle 204 flows out quickly, the water level in the second baffle 204 drops quickly, thereby reducing the pressure on the first baffle 203. When the water level in the second baffle 204 is lower than that of the first baffle 203, the first baffle 203 is re-fitted with the side wall of the fixed bottom plate 4 under the action of the return elastic force of the torsion spring.

[0037] On the basis of the above work, the filter 202 can also be directly flushed manually using a water pipe. The impact force of the water flow can push the first baffle 203 outward, so that the impurities on the inner side of the fixed bottom plate 4 can be smoothly discharged downward into the pool with the water flow, thereby enhancing the cleaning effect of the filter 202.

[0038] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An intelligent annealing device for aluminum coils used in lithium battery production, comprising an annealing furnace (1), a moving component (2) and a furnace door (3); the moving component (2) is installed on the front side of the annealing furnace (1); the furnace door (3) is connected to the moving component (2); the characteristics are: The invention also comprises a fixed bottom plate (4), a connecting pipe (6), an exhaust pipe (7), a first air inlet pipe (8), a second air inlet pipe (9) and a partition plate (201); the partition plate (201) is fixedly connected to the inner side of the annealing furnace (1); an annealing chamber (1001) is formed between the lower side of the partition plate (201) and the annealing furnace (1); an air supply chamber (1003) is formed between the upper side of the partition plate (201) and the annealing furnace (1); a plurality of first exhaust channels (20101) are provided on the partition plate (201); the annealing chamber (1001) and the air supply chamber (1003) are connected via the first exhaust channels (20101); a fixed bottom plate (4) is placed in the annealing chamber (1001); a plurality of left-right symmetrical supporting blocks (4001) for supporting the aluminum coil (5) are fixedly connected to the fixed bottom plate (4); four air suction grooves (4003) arranged in a rectangular shape are provided on the fixed bottom plate (4); each air suction groove (4003) is provided with a first exhaust channel (201 ... The grooves (4003) are all connected to a gas delivery channel (4004); a gas collection channel (4005) is provided inside the fixed bottom plate (4), and all the gas delivery channels (4004) are connected to the gas collection channel (4005); a connecting pipe (6) is connected to the rear side of the gas collection channel (4005); an exhaust pipe (7) is fixedly connected to the annealing furnace (1); the exhaust pipe (7) is connected to the annealing chamber (1001), and the exhaust pipe (7) is connected to an external exhaust pipe (1001). The annealing furnace (1) is connected to an argon gas storage device; the exhaust pipe (7) and the connecting pipe (6) are sleeved and matched; a first air inlet pipe (8) is fixedly connected to the annealing furnace (1); the first air inlet pipe (8) is connected to the annealing chamber (1001), and the first air inlet pipe (8) is connected to an external argon gas storage device; a second air inlet pipe (9) is arranged on the upper side of the annealing furnace (1); the second air inlet pipe (9) is connected to the air supply chamber (1003), and the second air inlet pipe (9) is connected to the external air supply device.

2. According to claim 1, an intelligent annealing device for aluminum coils used in lithium battery production is characterized in that: A plurality of second exhaust channels (20102) for cleaning the side walls of the annealing chamber (1001) are provided on the partition plate (201); each second exhaust channel (20102) faces the four walls of the annealing chamber (1001).

3. The intelligent annealing device for aluminum coils used in lithium battery production according to claim 1, characterized in that: The bottom of the annealing furnace (1) is provided with a plurality of guide grooves (1004); the lower side of the fixed bottom plate (4) is provided with a plurality of limit protrusions (4007); each limit protrusion (4007) is slidably matched with an adjacent guide groove (1004).

4. The intelligent annealing device for aluminum coils used in lithium battery production according to claim 3, characterized in that: It also includes a guide plate (205); a plurality of guide plates (205) are fixedly connected to the fixed bottom plate (4), and each guide plate (205) is respectively located at the front side and the rear side of the corresponding support block (4001); the guide plates (205) at the front and rear sides of the same support block (4001) are arranged in an inverted figure eight shape; and the guide plates (205) are configured as arc-shaped plates.

5. The intelligent annealing device for aluminum coils used in lithium battery production according to claim 4, characterized in that: A protrusion (4006) is provided on the fixed bottom plate (4); the protrusion (4006) is in the shape of a quadrangular pyramid.

6. The intelligent annealing device for aluminum coils used in lithium battery production according to claim 1, characterized in that: The gas transmission channel (4004) and the gas collection channel (4005) are both arranged in an inclined shape, that is, the height of the gas transmission channel (4004) near the outer edge of the fixed bottom plate (4) is higher than the height near the center of the fixed bottom plate (4), and the height of the gas collection channel (4005) near the outer edge of the fixed bottom plate (4) is lower than the height at the center of the fixed bottom plate (4).

7. An intelligent annealing device for aluminum coils used in lithium battery production according to claim 4, characterized in that: It also includes a filter screen (202) and a first baffle (203); four filter screens (202) arranged in a rectangular shape and used to intercept dust or metal particle impurities in the airflow are installed on the fixed bottom plate (4); each filter screen (202) is located on the upper side of an adjacent air suction slot (4003); and a first baffle (203) for collecting dust impurities is installed on each of the four sides of the fixed bottom plate (4).

8. An intelligent annealing device for aluminum coils used in lithium battery production according to claim 7, characterized in that: It also includes a second baffle (204); a plurality of second baffles (204) arranged in a rectangular shape are fixedly connected to the periphery of the fixed bottom plate (4) to facilitate the flow of impurities on the side wall of the annealing chamber (1001) to the filter screen (202); the second baffle (204) is located above the first baffle (203), and the second baffle (204) is arranged in a convex arc shape.

9. An intelligent annealing device for aluminum coils used in lithium battery production according to claim 8, characterized in that: The fixed base plate (4) and its connecting parts are all made of a high temperature resistant alloy material.

10. An intelligent annealing device for aluminum coils used in lithium battery production according to claim 9, characterized in that: The first baffle (203) is arranged to be rotatably connected to the fixed bottom plate (4) via a torsion spring; in an initial state, the first baffle (203) is in contact with the side wall of the fixed bottom plate (4); and the filter screen (202) is arranged to be tilted downward.

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