An electrode baking device for lithium battery processing

Abstract

A kind of pole piece baking device for lithium battery processing, it relates to lithium battery processing technical field, including baking oven, the base side of baking oven is equipped with PLC controller, the top of baking oven is hinged with box cover, and the top of box cover is fixed with handle, the inside bottom of baking oven is rotatably provided with several pole piece placement units, the bottom of pole piece placement unit is fixed with connecting shaft, and the bottom of baking oven is equipped with drive mechanism for driving connecting shaft rotation, infrared heater is installed on the inner wall of baking oven, hot air fan is installed on the top of baking oven, the outlet of hot air fan is communicated with and fixed with air blowing pipe, the pole piece baking device for lithium battery processing can make pole piece evenly heated during baking process, avoid local baking uneven problem, improve the baking quality and consistency of pole piece, realize the recycling of solvent, reduce production cost, reduce environmental pollution, meet the requirements of green production.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing technology, and in particular to an electrode baking device for lithium battery processing. Background Technology

[0002] In the manufacturing process of lithium batteries, the baking of the electrodes is a crucial step. After the electrodes are coated with a slurry, they contain a certain amount of solvent and moisture. If they are not baked sufficiently, it will seriously affect the performance and quality of the lithium battery, such as causing problems like reduced battery capacity and shortened cycle life. In the prior art, patent CN 216924947 U discloses a lithium battery electrode baking device. It gradually increases the temperature of the bottom of the placement box by heating the heating plate under the separator. Then, the auxiliary plate is pushed upward so that the heating tube inside the auxiliary plate is in contact with the side of the placement box. The circulation box can heat the inside of the heating tube, thus increasing the temperature of the heating tube. Because the side of the heating tube is in contact with the side of the placement box, the side of the placement box can be heated. The position of the components inside the placement box is fixed and inconvenient, making it difficult to heat evenly. This can easily lead to local under-baking or over-baking, affecting the consistency of the electrode and the quality of the final battery product. In addition, it lacks an effective solvent recovery mechanism. The solvent volatilized during the baking process is directly released into the air, which not only wastes raw materials but also pollutes the environment, failing to meet the requirements of green production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an electrode baking device for lithium battery processing. It can make the electrode uniformly heated during the baking process, avoid the problem of uneven local baking, improve the baking quality and consistency of the electrode, realize the recycling of solvent, reduce production costs and reduce environmental pollution, meet the requirements of green production, and effectively solve the problems in the background technology.

[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution: A baking device for lithium battery electrode processing includes a baking oven. A PLC controller is mounted on the side of the base of the baking oven. A lid is hinged to the top of the baking oven, and a handle is fixed to the top of the lid. Several electrode placement units are rotatably arranged on the bottom inner side of the baking oven. A connecting shaft is fixed to the bottom of the electrode placement units, and a drive mechanism for driving the connecting shaft to rotate is installed on the bottom of the baking oven. An infrared heater is installed on the inner wall of the baking oven. A hot air blower is installed on the top of the baking oven. A blower pipe is fixedly connected to the air outlet of the hot air blower. Air holes are evenly opened on the side of the blower pipe and are located inside the baking oven. A solvent recovery unit is installed on the side of the baking oven and is connected to the interior of the baking oven. The PLC controller is electrically connected to an external power supply. The infrared heater and the hot air blower are both electrically connected to the PLC controller.

[0005] Furthermore, the electrode placement unit includes a tray and a fixing frame. The tray is rotatably mounted on the bottom of the baking oven, the fixing frame is fixed on the top of the tray, and the connecting shaft is fixed on the bottom of the tray.

[0006] Furthermore, the electrode placement unit also includes a bearing, and the tray is rotatably connected to the baking oven via the bearing.

[0007] Furthermore, the electrode placement unit also includes through holes, which are evenly distributed on the fixing frame.

[0008] Furthermore, the drive mechanism includes a driven gear, a driving gear, and a servo motor. The servo motor is mounted on the bottom of the baking oven. The driving gear is fixed on the output shaft of the servo motor, and the driven gear is fixed on the bottom of the connecting shaft. The driving gear meshes with the driven gear, and the servo motor is electrically connected to the PLC controller.

[0009] Furthermore, the solvent recovery unit includes a gas delivery pipe and a condenser. The condenser is installed on the side of the baking oven and is connected to the interior of the baking oven through the gas delivery pipe. The condenser is electrically connected to a PLC controller.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This electrode baking device for lithium battery processing has the following advantages: 1. By setting a drive mechanism to drive the electrode placement unit to rotate, and with the dual heating method of infrared heater and hot air blower, the electrode can be heated evenly during the baking process, avoiding the problem of uneven local baking, and improving the baking quality and consistency of the electrode.

[0011] 2. It is equipped with a solvent recovery unit, which introduces the solvent vapor volatilized in the baking oven into the condenser for condensation and recovery through a gas delivery pipe, realizing the recycling of solvent, which reduces production costs and environmental pollution, and meets the requirements of green production. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional bottom structure of this utility model; Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0013] In the diagram: 1-Baking oven, 2-PLC controller, 3-Drive mechanism, 31-Driven gear, 32-Drive gear, 33-Servo motor, 4-Electrode placement unit, 41-Tray, 42-Bearing, 43-Fixed frame, 44-Through hole, 5-Crate cover, 6-Handle, 7-Solvent recovery unit, 71-Gas delivery pipe, 72-Condenser, 8-Connecting shaft, 9-Hot air blower, 10-Blower pipe, 11-Air vent, 12-Infrared heater. Detailed Implementation

[0014] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0015] Please see Figure 1-4 This embodiment provides a technical solution: a baking device for electrode sheets in lithium battery processing, including a baking oven 1. A PLC controller 2 is installed on the side of the base of the baking oven 1. A cover 5 is hinged to the top of the baking oven 1, and a handle 6 is fixed to the top of the cover 5. Several electrode sheet placement units 4 are rotatably arranged on the bottom inner side of the baking oven 1. A connecting shaft 8 is fixed to the bottom of the electrode sheet placement unit 4, and a drive mechanism 3 for driving the connecting shaft 8 to rotate is installed on the bottom of the baking oven 1. An infrared heater 12 is installed on the inner wall of the baking oven 1. A hot air blower 9 is installed on the top of the baking oven 1. A blower pipe 10 is connected and fixed to the air outlet of the hot air blower 9. Air holes 11 are evenly opened on the side of the blower pipe 10 and are located inside the baking oven 1. A solvent recovery unit 7 is installed on the side of the baking oven 1 and is connected to the interior of the baking oven 1. The PLC controller 2 is electrically connected to an external power supply. The infrared heater 12 and the hot air blower 9 are both electrically connected to the PLC controller 2. Baking parameters are set by the PLC controller 2. After baking is completed, the PLC controller... Controller 2 controls each device to stop working. After starting the device, PLC controller 2 controls infrared heater 12 and hot air blower 9 to start working. Infrared heater 12 radiates heat to the inside of baking oven 1. Hot air generated by hot air blower 9 blows to electrode placement unit 4 through air hole 11 on blower pipe 10. After the temperature inside baking oven 1 drops to a suitable temperature, open the oven cover 5 and take out the baked electrode.

[0016] The electrode placement unit 4 includes a tray 41 and a fixing frame 43. The tray 41 is rotatably mounted on the bottom of the baking oven 1, and the fixing frame 43 is fixed on the top of the tray 41. The connecting shaft 8 is fixed on the bottom of the tray 41. The electrode placement unit 4 also includes a bearing 42. The tray 41 is rotatably connected to the baking oven 1 through the bearing 42. The electrode placement unit 4 also includes through holes 44. The through holes 44 are evenly opened on the fixing frame 43. The oven cover 5 is opened by the handle 6, and the electrode to be baked is placed on the fixing frame 43 of the electrode placement unit 4. The oven cover 5 is then closed. The through holes 44 facilitate the circulation of hot air and improve the baking uniformity.

[0017] The drive mechanism 3 includes a driven gear 31, a driving gear 32, and a servo motor 33. The servo motor 33 is installed at the bottom of the baking oven 1. The driving gear 32 is fixed on the output shaft of the servo motor 33, and the driven gear 31 is fixed on the bottom of the connecting shaft 8. The driving gear 32 meshes with the driven gear 31. The servo motor 33 is electrically connected to the PLC controller 2. The PLC controller 2 controls the rotation of the servo motor 33. The output shaft of the servo motor 33 drives the driving gear 32 to rotate. The meshing transmission of the driving gear 32 and the driven gear 31 drives the connecting shaft 8 to rotate. The connecting shaft 8 drives the fixing frame 43 to rotate through the tray 41, ensuring that all parts of the electrode are heated evenly. This ensures that the electrode is heated evenly during the baking process, avoiding uneven local baking and improving the baking quality and consistency of the electrode.

[0018] The solvent recovery unit 7 includes a gas delivery pipe 71 and a condenser 72. The condenser 72 is installed on the side of the baking oven 1 and is connected to the inside of the baking oven 1 through the gas delivery pipe 71. The condenser 72 is electrically connected to the PLC controller 2. The solvent vapor generated during the baking process enters the condenser 72 through the gas delivery pipe 71 and is condensed into liquid solvent in the condenser 72, realizing the recovery and reuse of solvent. This reduces production costs and environmental pollution, meeting the requirements of green production.

[0019] The working principle of the electrode baking device for lithium battery processing provided by this utility model is as follows: Open the box cover 5 by using handle 6, place the electrode to be baked on the fixing frame 43 of the electrode placement unit 4, and close the box cover 5. Set the baking parameters through PLC controller 2.

[0020] After the device is started, the PLC controller 2 controls the infrared heater 12 and the hot air blower 9 to start working. The infrared heater 12 radiates heat to the inside of the baking oven 1, and the hot air generated by the hot air blower 9 blows towards the electrode placement unit 4 through the air hole 11 on the blower pipe 10. At the same time, the PLC controller 2 controls the servo motor 33 to rotate. The output shaft of the servo motor 33 drives the drive gear 32 to rotate. The meshing transmission between the drive gear 32 and the driven gear 31 drives the connecting shaft 8 to rotate. The connecting shaft 8 drives the fixing frame 43 to rotate through the tray 41, ensuring that all parts of the electrode are heated evenly.

[0021] The solvent vapor generated during the baking process enters the condenser 72 through the gas delivery pipe 71, where it is condensed into liquid solvent, thus realizing the recycling of the solvent.

[0022] After baking is complete, PLC controller 2 controls all equipment to stop working. Once the internal temperature of baking oven 1 drops to a suitable temperature, open the oven cover 5 and remove the baked electrode sheet.

[0023] It is worth noting that the components disclosed in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The PLC controller 2, infrared heater 12, hot air blower 9 and servo motor 33 are all products currently on the market. Their structures and principles are public knowledge. This solution only describes their role in this solution and the technical effects they are intended to produce.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0025] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A baking apparatus for electrode sheets in lithium battery processing, comprising a baking oven (1), characterized in that: A PLC controller (2) is installed on the side of the base of the baking oven (1). A lid (5) is hinged to the top of the baking oven (1), and a handle (6) is fixed to the top of the lid (5). Several electrode placement units (4) are rotatably arranged on the bottom inner side of the baking oven (1). A connecting shaft (8) is fixed to the bottom of the electrode placement unit (4), and a drive mechanism (3) for driving the connecting shaft (8) to rotate is installed at the bottom of the baking oven (1). An infrared heater (12) is installed on the inner wall of the baking oven (1). A hot air blower (9) is installed on the top of the oven. A blower pipe (10) is connected and fixed at the air outlet of the hot air blower (9). Air holes (11) are evenly opened on the side of the blower pipe (10). The air holes (11) are located inside the oven (1). A solvent recovery unit (7) is installed on the side of the oven (1). The solvent recovery unit (7) is connected to the inside of the oven (1). The PLC controller (2) is electrically connected to an external power supply. The infrared heater (12) and the hot air blower (9) are both electrically connected to the PLC controller (2).

2. The electrode baking apparatus for lithium battery processing according to claim 1, characterized in that: The electrode placement unit (4) includes a tray (41) and a fixing frame (43). The tray (41) is rotatably mounted on the bottom of the baking oven (1). The fixing frame (43) is fixed on the top of the tray (41). The connecting shaft (8) is fixed on the bottom of the tray (41).

3. The electrode baking apparatus for lithium battery processing according to claim 2, characterized in that: The electrode placement unit (4) also includes a bearing (42), and the tray (41) is rotatably connected to the baking oven (1) through the bearing (42).

4. The electrode baking apparatus for lithium battery processing according to claim 1, characterized in that: The electrode placement unit (4) also includes through holes (44), which are evenly distributed on the fixing frame (43).

5. The electrode baking apparatus for lithium battery processing according to claim 1, characterized in that: The drive mechanism (3) includes a driven gear (31), a driving gear (32) and a servo motor (33). The servo motor (33) is installed at the bottom of the baking oven (1). The driving gear (32) is fixed on the output shaft of the servo motor (33). The driven gear (31) is fixed at the bottom of the connecting shaft (8). The driving gear (32) meshes with the driven gear (31). The servo motor (33) is electrically connected to the PLC controller (2).

6. The electrode baking apparatus for lithium battery processing according to claim 1, characterized in that: The solvent recovery unit (7) includes a gas delivery pipe (71) and a condenser (72). The condenser (72) is installed on the side of the baking oven (1). The condenser (72) is connected to the inside of the baking oven (1) through the gas delivery pipe (71). The condenser (72) is electrically connected to the PLC controller (2).

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