A uniform drying device for lithium battery separator coating

Abstract

The utility model relates to a kind of even drying device for lithium battery diaphragm coating, belong to lithium battery diaphragm coating drying equipment technical field, including conveying component, drying flow guide component and dryer, the drying flow guide component is located in the outer lateral wall of conveying component, the conveying component includes the rack for cooperation drying flow guide component, the dryer is fixedly installed in the top of rack and located in the side position of drying flow guide component, silo body of drying flow guide component continuously rotates under the driving of second servo motor, the internal array distribution's flow guide plate agitates hot air flow along with it, makes hot air flow form circulating flow in silo, breaks the limitation of traditional static drying, can ensure that lithium battery diaphragm when passing through silo, each part can evenly contact hot air flow, eliminates drying blind area.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium battery separator coating and drying equipment, specifically relating to a uniform drying device for lithium battery separator coating. Background Technology

[0002] Lithium-ion batteries, as core energy storage devices in the new energy field, are widely used in industries such as electric vehicles, consumer electronics, and energy storage power stations. The lithium-ion battery separator, as a key internal component, directly affects the safety and lifespan of the battery. In the production process of lithium-ion battery separators, the coating process is a crucial step in improving separator performance, while the subsequent drying process is a key step in ensuring separator quality.

[0003] In existing lithium-ion battery separator coating and drying technologies, most employ traditional static drying equipment. This type of equipment typically features a fixed hot air flow structure, resulting in uneven distribution of hot air within the drying chamber. This leads to uneven heating of the separator during the drying process, easily causing localized over-drying or under-drying. This uneven drying not only affects key performance indicators such as separator porosity and permeability but can also cause defects such as wrinkles and deformation on the separator surface, thereby reducing the overall performance and yield of the lithium-ion battery. Furthermore, traditional drying equipment has low heat exchange efficiency, resulting in insufficient contact between the hot air and the separator, leading to prolonged drying time and low production efficiency, making it difficult to meet the growing demands of the lithium-ion battery market. Therefore, those skilled in the art have provided a uniform drying device for lithium-ion battery separator coating to address the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reasonably designed uniform drying device for coating lithium battery separators in order to solve the above problems.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: it includes a conveying component, a drying guide component, and a dryer. The drying guide component is disposed on the outer wall of the conveying component. The conveying component includes a frame for cooperating with the drying guide component. The dryer is fixedly installed on the top of the frame and located on one side of the drying guide component. The drying guide component includes two fixed seats fixedly installed below the conveying component. The top of the two fixed seats is rotatably connected to a silo body. The silo body is rotatably sleeved on the outer wall of the frame. A plurality of arrayed guide plates are installed inside the silo body.

[0006] As a further optimization of this utility model, limit rings are fixedly installed on both sides of the middle of the outer side wall of the silo body, and the two limit rings are slidably connected to the inner side wall of the corresponding fixed seat. A driven toothed ring is fixedly installed at the middle position of the outer side wall of the silo body.

[0007] As a further optimization of this utility model, a mounting base is installed between the two fixed bases. A second servo motor is fixedly installed at the top center of the mounting base. A symmetrically distributed mounting plate is installed at the top center of the mounting base. A drive gear is rotatably connected between the mounting plates. The output end of the second servo motor is fixedly connected to the middle of the side wall of the drive gear. The side wall of the drive gear meshes with the driven gear ring.

[0008] As a further optimization of this utility model, a placement roller and a tension roller are rotatably connected to the upper two sides of the inner sidewall of the frame, respectively. The placement roller and the tension roller are symmetrically distributed, and a synchronous wheel is fixedly sleeved at both ends of the placement roller and the tension roller. A synchronous belt is sleeved on the outer sidewall of the two synchronous wheels on the same side.

[0009] As a further optimization of this utility model, a servo motor is fixedly installed on the inner side wall of the frame and is fixedly connected to the middle position of the side wall of the placement roller or tension roller.

[0010] As a further optimization of this utility model, a take-up roller is rotatably connected to the inner side wall of the frame and located below the tension roller.

[0011] As a further optimization of this utility model, a connecting seat is fixedly connected to the side wall of the dryer, and a fan is fixedly connected to the side wall of the connecting seat, and the fan cooperates with the dryer.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. In this utility model, the silo body of the drying guide assembly rotates continuously under the drive of the second servo motor, and the guide plates distributed in the internal array agitate the hot airflow, so that the hot airflow forms a circulation flow in the silo, breaking the limitations of traditional static drying, and ensuring that the lithium battery separator can be evenly contacted by the hot airflow in all parts when passing through the silo, eliminating the drying blind zone.

[0014] 2. This utility model and solution achieve continuous and rapid drying of the diaphragm through the coordinated operation of the conveying component and the drying guide component. The servo motor precisely controls the conveying speed of the diaphragm, and the second servo motor adjusts the rotation speed of the silo body, so that the diaphragm can fully contact the hot airflow during the movement, which greatly shortens the heat exchange time. At the same time, the circulating hot airflow improves the thermal energy utilization rate.

[0015] 3. In this utility model, after the fan sends outside air into the dryer for heating, the hot airflow circulates in the silo under the action of the rotating guide plate, reducing heat loss. In addition, through the coordinated control of the servo motor and the second servo motor, the conveying speed and silo rotation speed can be precisely adjusted according to the actual needs of the diaphragm, avoiding unnecessary energy consumption. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0017] Figure 2 This is a front view structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 4 This is a utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Conveying assembly; 101. Frame; 102. Placement roller; 103. Synchronous pulley; 104. Synchronous belt; 105. Tension roller; 106. Rewinding roller; 107. Servo motor; 2. Drying guide assembly; 201. Fixed base; 202. Mounting base; 203. Second servo motor; 204. Mounting plate; 205. Drive gear; 206. Driven gear ring; 207. Silo body; 208. Limiting ring; 209. Guide plate; 3. Dryer; 4. Connecting base; 5. Fan. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a uniform drying device for lithium battery separator coating includes a conveying assembly 1, a drying guide assembly 2, and a dryer 3. The conveying assembly 1 is used to convey the lithium battery separator. The drying guide assembly 2 is located on the outer wall of the conveying assembly 1. The dryer 3 is fixedly installed on the top of the frame 101 and located on one side of the drying guide assembly 2. The three components are designed through mechanical transmission and airflow circulation to ensure the uniformity of separator drying. The core of the conveying assembly 1 is the frame 101, with a placement roller 102 and a tension roller 105 rotatably connected to the upper sides of its inner wall, respectively. The two are symmetrically distributed. Synchronous pulleys 1 are fixedly sleeved on the outer walls of both the placement roller 102 and the tension roller 105. 03. A synchronous belt 104 is fitted on the outer side of the synchronous pulley 103 to form a synchronous transmission structure. A servo motor 107 is installed on the inner side wall of the frame 101. Its output end is fixedly connected to the middle of the side wall of the placement roller 102 or the tension roller 105. The servo motor 107 drives the synchronous pulley 103 and the synchronous belt 104 to realize the synchronous rotation of the placement roller 102 and the tension roller 105, thereby driving the lithium battery separator to be transported smoothly. The inner side wall of the frame 101 is rotatably connected to the winding roller 106 below the tension roller 105. After the separator is processed by the drying guide assembly 2, it is wound up by the winding roller 106 to complete the material transfer of the entire drying process.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the drying guide assembly 2 includes two fixed seats 201, which are fixedly installed below the conveying assembly 1. The top of the fixed seats 201 is rotatably connected to the silo body 207. Limiting rings 208 are fixedly installed on both sides of the middle of the outer wall of the silo body 207. The limiting rings 208 are slidably connected to the inner wall of the fixed seats 201 to ensure the stability of the silo body 207 when rotating. A driven gear ring 206 is fixedly installed in the middle of the outer wall of the silo body 207 and meshes with the driving gear 205 for transmission. An mounting seat 202 is installed between the two fixed seats 201. A second servo motor 203 is fixedly installed in the middle of the top of the mounting seat 202. Its output end is connected to the driving gear 205. Mounting plates 204 are symmetrically distributed on the top of the mounting seat 202. The driving gear 205 is rotatably connected between the mounting plates 204. When the second servo motor 203 is started, it drives the driving gear 205 to rotate. Through gear meshing, it drives the driven gear ring 206 and the silo body 207 to rotate. Several arrays are installed inside the silo body 207. The guide plate 209 of the cloth rotates when the silo body 207 rotates, guiding and diverting the hot airflow entering the silo to ensure that the lithium battery separator can evenly contact the hot airflow when passing through the silo, thus improving the drying uniformity. The dryer 3 is fixedly installed on the top of the frame 101, and its side wall is fixedly connected to the fan 5 through the connecting seat 4. When the fan 5 is working, it draws in the outside air and sends it into the dryer 3 for heating. The heated hot airflow enters the silo through the inlet of the silo body 207 of the drying guide assembly 2. As the silo body 207 rotates continuously under the drive of the second servo motor 203, the internal guide plate 209 continuously stirs the hot airflow, causing the hot airflow to form a circulating flow in the silo, avoiding local temperature unevenness. The lithium battery separator is released by the placement roller 102 of the conveying assembly 1, and after being tensioned by the tension roller 105, it enters the silo from one side of the silo body 207 and is dried under the action of the hot airflow. Then it is output from the other side and wound up by the winding roller 106.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the servo motor 107 starts, driving the placement roller 102 to rotate via the synchronous pulley 103 and synchronous belt 104, releasing the lithium battery separator. Simultaneously, the tension roller 105 rotates synchronously to maintain the separator tension, and the winding roller 106 slowly rotates to prepare for winding. The second servo motor 203 drives the drive gear 205 to rotate, causing the silo body 207 to rotate. The internal guide plate 209 rotates accordingly, and the fan 5 sends air into the dryer 3 for heating. The hot airflow enters the silo body 207 through the connecting seat 4 and is evenly distributed under the action of the guide plate 209 to dry the separator. The dried separator is then wound up by the winding roller 106, completing the entire drying process. Through the coordinated control of the servo motor 107 and the second servo motor 203, the conveying speed and silo rotation speed can be adjusted according to the separator material and coating thickness. Combined with the temperature adjustment of the dryer 3, uniform drying of the lithium battery separator after coating is achieved, improving product quality and production efficiency.

[0026] It should be noted that in use, the conveying assembly 1 uses the frame 101 as a carrier and the servo motor 107 as a power source. The servo motor 107 outputs power to drive the synchronous wheel 103 connected to the side wall of the placement roller 102 or tension roller 105 to rotate. The synchronous wheel 103 drives another synchronous wheel 103 through the synchronous belt 104, so as to realize the synchronous rotation of the placement roller 102 and the tension roller 105. The placement roller 102 releases the lithium battery separator, and the tension roller 105 ensures that the separator is conveyed flat through tension. The winding roller 106 winds up the separator after it is dried. The servo motor 107 can precisely control the speed and flexibly adjust the conveying speed according to the separator material, thickness and drying requirements to ensure that the separator moves smoothly and at a uniform speed during the drying process and avoid the difference in drying effect due to uneven speed.

[0027] The dryer 3 is connected to the fan 5 via the connecting seat 4. The fan 5 continuously draws in outside air and sends it into the dryer 3. The dryer 3 heats the air to reach the set drying temperature and, under the action of the fan's guide vanes, blows the heated airflow at an angle upwards towards the silo body 207. Under the action of the rotating guide plate 209, the hot airflow forms a circulating flow within the silo, preventing the accumulation or absence of hot airflow in local areas. The hot airflow makes full contact with the diaphragm surface and removes moisture and other solvents from the diaphragm coating through heat conduction and convection, completing the drying process. The circulating hot airflow can improve the thermal energy utilization rate, reduce energy consumption, and ensure that the drying degree of each part of the diaphragm is consistent.

[0028] In the drying and guiding assembly 2, the second servo motor 203 is installed on the top of the mounting base 202. Its output end drives the drive gear 205 to rotate. The drive gear 205 meshes with the driven gear ring 206 on the outer wall of the silo body 207, transmitting the rotational power of the second servo motor 203 to the silo body 207, causing it to rotate around the top of the fixed base 201. When the silo body 207 rotates, the guide plates 209 distributed in the internal array move accordingly. The guide plates 209 redistribute and agitate the hot airflow generated by the dryer 3 in the silo by changing the direction and speed of the hot airflow, so that the hot airflow can contact the surface of the lithium battery separator evenly and comprehensively, eliminating the drying blind zone and achieving uniform heating of the separator.

[0029] The operation of the entire drying device relies on the coordinated operation of the servo motor 107, the second servo motor 203, and the temperature control of the dryer 3. The operator can set the rotation speed of the servo motor 107 to control the membrane conveying speed according to the specific parameters of the lithium battery separator, such as material type, coating thickness, solvent characteristics, etc., and set the rotation speed of the silo body 207 to adjust the rotation speed of the silo body 207. This changes the frequency and intensity of the agitation of the hot airflow by the guide plate 209. At the same time, the heating temperature of the dryer 3 is adjusted. Through the precise coordination of the three, the drying process can be precisely controlled to meet the uniform drying requirements of lithium battery separator coating under different working conditions and ensure stable product quality.

[0030] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A uniform drying device for coating lithium battery separators, comprising a conveying assembly (1), a drying guide assembly (2), and a dryer (3), wherein the drying guide assembly (2) is disposed on the outer side wall of the conveying assembly (1), the conveying assembly (1) includes a frame (101) for cooperating with the drying guide assembly (2), the dryer (3) is fixedly installed on the top of the frame (101) and located on one side of the drying guide assembly (2), the drying guide assembly (2) includes two fixed seats (201) fixedly installed below the conveying assembly (1), the top of the two fixed seats (201) is rotatably connected to a silo body (207), the silo body (207) is rotatably sleeved on the outer side wall of the frame (101), and a plurality of arrayed guide plates (209) are installed inside the silo body (207).

2. The uniform drying apparatus for coating lithium battery separators according to claim 1, characterized in that: Limiting rings (208) are fixedly installed on both sides of the middle of the outer side wall of the silo body (207). The two limiting rings (208) are slidably connected to the inner side wall of the corresponding fixed seat (201). A driven toothed ring (206) is fixedly installed in the middle of the outer side wall of the silo body (207).

3. The uniform drying apparatus for coating lithium battery separators according to claim 2, characterized in that: A mounting base (202) is installed between the two fixed bases (201). A second servo motor (203) is fixedly installed at the top center of the mounting base (202). A mounting plate (204) is symmetrically distributed at the top center of the mounting base (202). A drive gear (205) is rotatably connected between the mounting plates (204). The output end of the second servo motor (203) is fixedly connected to the middle of the side wall of the drive gear (205). The side wall of the drive gear (205) meshes with the driven gear ring (206).

4. The uniform drying apparatus for lithium battery separator coating according to claim 3, characterized in that: The upper sides of the inner wall of the frame (101) are respectively rotatably connected to the placement roller (102) and the tension roller (105). The placement roller (102) and the tension roller (105) are symmetrically distributed. Both ends of the placement roller (102) and the tension roller (105) are fixedly fitted with synchronous pulleys (103). The outer walls of the two synchronous pulleys (103) on the same side are respectively fitted with synchronous belts (104).

5. A uniform drying apparatus for coating lithium battery separators according to claim 4, characterized in that: A servo motor (107) is fixedly installed on the inner side wall of the frame (101) and is fixedly connected to the middle position of the side wall of the placement roller (102) or tension roller (105).

6. The uniform drying apparatus for coating lithium battery separators according to claim 5, characterized in that: A take-up roller (106) is rotatably connected to the inner wall of the frame (101) and below the tension roller (105).

7. A uniform drying apparatus for coating lithium battery separators according to claim 6, characterized in that: The dryer (3) is fixedly connected to a connecting seat (4), and the connecting seat (4) is fixedly connected to a fan (5), which works in conjunction with the dryer (3).

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