Drying oven air supply device for reducing cracking of lithium ion battery pole piece and drying oven

Abstract

The utility model relates to a drying oven air supply device for reducing cracking of a lithium ion battery pole piece and a drying oven, belongs to the technical field of drying equipment, and solves the technical problem that in the prior art, a baffle cannot improve drying defects possibly occurring at different positions of the pole piece in a targeted mode. The air supply device comprises an air supply box, a rail groove and an air blocking assembly, an air inlet of the air supply box is communicated with the drying oven, an air outlet of the air supply box faces the battery pole piece to dry the battery pole piece through air of the drying oven, the rail groove is fixedly formed in the drying oven, and the air blocking assembly can move in the rail groove and block different positions of the air outlet. Therefore, the drying state of different areas on the battery pole piece is adjusted, the position of the wind shielding assembly is changed, and different parts of the air outlet can be shielded, so that the distribution of drying wind on the surface of the pole piece and the wind power are adjusted, the wind shielding assembly can be flexibly moved to the corresponding position for shielding, and the possible drying defects of different positions of the pole piece are improved in a targeted manner.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to an oven air supply device and an oven for reducing cracking of lithium-ion battery electrode sheets. Background Technology

[0002] During the drying and film formation process of lithium-ion battery electrode coatings, the cracking mechanisms differ in different regions of the coating. However, coating cracking typically involves factors such as capillary action, particle aggregation, internal stress accumulation, and solvent evaporation rate, all of which are closely related to the drying process in the oven. Currently, although the ovens used with coating machines have adjustable airflow and temperature, the airflow and temperature from the outlet of the same air box are identical. This leads to differences in the drying speed of the coating on the current collector, resulting in cracking or curling of the electrode coating.

[0003] In related technologies, baffles are fixedly installed at both ends of the air outlet to solve the technical problem of edge cracking of the electrode coating. However, this fixed baffle solution has some limitations. It only helps to solve edge cracking, but does not help cracking and curling in other locations. This greatly limits its adaptability and adjustment flexibility under different working conditions. It cannot specifically improve the drying defects that may occur in different locations of the electrode and is difficult to meet diverse process requirements. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide an oven air supply device and an oven for reducing cracking of lithium-ion battery electrodes, in order to solve the technical problem in the prior art that the baffle cannot specifically improve the drying defects that may occur at different positions of the electrode.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] In a first aspect, an oven air supply device for reducing cracking of lithium-ion battery electrode sheets is provided, comprising an air supply box, a track groove, and a wind baffle assembly. The air inlet of the air supply box is connected to the oven, and the air outlet of the air supply box faces the battery electrode sheet to dry the battery electrode sheet with air from the oven. The track groove is fixedly disposed on the oven, and the wind baffle assembly can move in the track groove and block different positions of the air outlet, thereby adjusting the drying state of different areas on the battery electrode sheet.

[0007] Furthermore, the windbreak assembly includes a first windbreak plate and a second windbreak plate. The first windbreak plate has a first ventilation hole, and the second windbreak plate has a second ventilation hole. The number of second ventilation holes is the same as the number of first ventilation holes, and the holes have the same diameter. The first windbreak plate covers the outside of the air supply box, and the first ventilation hole faces the air outlet. The second windbreak plate covers the outside of the first windbreak plate, and the second ventilation hole can face the first ventilation hole. Both the first windbreak plate and the second windbreak plate are disposed on the track groove and can move on the track groove.

[0008] Furthermore, the first ventilation holes are equally spaced on the first windbreak plate, and the distance between adjacent first ventilation holes is not less than twice the diameter of the first ventilation hole. The second ventilation holes are equally spaced on the second windbreak plate, and the distance between adjacent second ventilation holes is not less than twice the diameter of the second ventilation hole.

[0009] Furthermore, the track groove includes a first track groove and a second track groove, the first wind deflector can move within the first track groove, and the second wind deflector can move on the second track groove.

[0010] Furthermore, the track groove also includes a third track groove, and the air supply box is disposed in the third track groove and is movable within the third track groove.

[0011] Furthermore, the first rail groove and / or the second rail groove are provided with clamping wheels, which are used to clamp the first wind deflector and / or the second wind deflector to move the first wind deflector and / or the second wind deflector on the clamping wheels.

[0012] Furthermore, the windshield assembly also includes a positioning component, which includes an elastic protrusion and a positioning groove. The elastic protrusion is fixedly disposed on the outer side of the first windshield, and the positioning groove is formed on the inner side of the second windshield. When the first windshield or the second windshield is moved, the elastic protrusion can slide into the positioning groove to fix the first windshield and the second windshield relative to each other.

[0013] Furthermore, the wind deflector assembly also includes a first sealing gasket layer, which is disposed between the first wind deflector plate and the second wind deflector plate to prevent the drying air from entering between the first wind deflector plate and the second wind deflector plate.

[0014] Furthermore, the windbreak assembly also includes a second sealing gasket layer, which is disposed between the first windbreak plate and the air supply box to prevent the drying air from entering between the first windbreak plate and the air supply box.

[0015] In a second aspect, an oven for battery electrodes is provided, comprising an oven body and an oven air supply device for reducing cracking of lithium-ion battery electrodes as described in the first aspect, wherein the oven body is connected to the oven air supply device for reducing cracking of lithium-ion battery electrodes to deliver the drying air to the battery electrodes.

[0016] The technical solution of this utility model can achieve at least one of the following effects:

[0017] (1) The oven air supply device for reducing cracking of lithium-ion battery electrode sheets described in this utility model includes an air supply box, a track groove, and a wind baffle assembly. The air inlet of the air supply box is connected to the oven to obtain drying air, and the air outlet of the air supply box faces the battery electrode sheet to dry the battery electrode sheet. The track groove is fixedly installed on the oven, and the wind baffle assembly is movably installed on the track groove. The wind baffle assembly covers the outside of the air outlet to block different positions of the air outlet and adjust the drying state of different areas on the battery electrode sheet. By changing its position relative to the air outlet, the wind baffle assembly can block different parts of the air outlet, thereby adjusting the distribution and wind force of the drying air on the electrode sheet surface and realizing personalized adjustment of the drying state of different areas on the electrode sheet. Thus, the wind baffle assembly can be flexibly moved to the corresponding position for blocking according to the actual drying condition of the electrode sheet coating and process requirements, and the drying defects that may occur in different positions of the electrode sheet can be specifically improved. It can effectively avoid cracking, curling and other problems caused by uneven drying of the coating, and improve the quality and consistency of the electrode sheet coating.

[0018] (2) The oven air supply device for reducing cracking of lithium-ion battery electrode sheets described in this utility model includes a first baffle plate, a first vent hole, a second baffle plate, and a second vent hole. By moving the first baffle plate and / or the second baffle plate, the first vent hole and the second vent hole can partially or completely overlap, thereby changing the ventilation area and wind force of the air outlet, and realizing the adjustment of the drying state of different areas of the electrode sheet. This is beneficial to improving the quality and production efficiency of the battery electrode sheets.

[0019] (3) The oven air supply device for reducing cracking of lithium-ion battery electrode sheets described in this utility model further includes a first sealing gasket layer. The first sealing gasket layer is placed between the first baffle plate and the second baffle plate to form a sealing barrier, preventing the drying air from entering the gap between the two, ensuring that the drying air flows along a predetermined path, avoiding air leakage between the baffle plates, improving the efficiency of air utilization, and also reducing unnecessary noise and vibration caused by air leakage, improving the stability of equipment operation, and improving the production environment.

[0020] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0021] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0022] Figure 1 This is a schematic diagram of the oven air supply device used to reduce cracking of lithium-ion battery electrode sheets in an embodiment of this utility model.

[0023] Figure 2 This is a schematic diagram of the windshield assembly in an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the track groove in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the clamping wheel in an embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional structural diagram of the positioning component in an embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the first sealing gasket layer and the second sealing gasket layer in the embodiment of this utility model.

[0028] Figure label:

[0029] 1-Air supply box, 11-Air outlet;

[0030] 2- Track groove, 21- First track groove, 22- Second track groove, 23- Third track groove, 24- Clamping wheel;

[0031] 3-Windbreak assembly, 31-First windbreak plate, 311-First ventilation hole, 321-Second ventilation hole, 32-Second windbreak plate, 33-Positioning assembly, 331-Elastic protrusion, 332-Positioning groove, 34-First sealing gasket layer, 35-Second sealing gasket layer. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," "linked," and "fixed," 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0035] Example 1

[0036] like Figure 1 As shown, this utility model embodiment provides an oven air supply device for reducing cracking of lithium-ion battery electrode sheets, including an air supply box 1, a track groove 2, and a wind baffle assembly 3. The air inlet of the air supply box 1 is connected to the oven, and the air outlet 11 of the air supply box 1 faces the battery electrode sheets to dry the battery electrode sheets with the air from the oven. The track groove 2 is fixedly installed on the oven. The wind baffle assembly 3 can move in the track groove 2 and block the air outlet 11 at different positions, thereby adjusting the drying state of different areas on the battery electrode sheets.

[0037] The air supply box 1 serves as the transmission channel for the drying air. Through the air outlet 11, it guides the drying air in the oven towards the battery electrode, providing an airflow source for the drying of the electrode coating. This ensures that the drying air acts on the electrode surface, promoting the evaporation of the solvent in the coating. For example, the air supply box 1 can be box-shaped and made of stainless steel, with strip-shaped air outlets 11 on it. Two air outlets 11 can be provided on the air supply box 1. The air outlet direction of the air outlet 11 forms an obtuse or acute angle with the traveling direction of the battery electrode, thereby prolonging the time that the drying air acts on the electrode surface. The track groove 2 provides the movement trajectory and support base for the wind baffle assembly 3, limiting the range of motion of the wind baffle assembly 3. This ensures that the wind baffle assembly 3 can move and be positioned flexibly along a specific path, thereby blocking the air outlets 11 at different positions. For example, the track groove 2 can be installed on the oven by riveting or bolting. Furthermore, the shielding position can be adjusted in real time according to the drying status of the battery electrode. The wind deflector 3 is installed on the outside of the air outlet 11. The wind deflector 3 can be made of stainless steel. By changing its position relative to the air outlet 11, it can shield different parts of the air outlet 11, thereby adjusting the distribution and wind force of the drying air on the electrode surface. This allows for personalized adjustments to the drying status of different areas on the electrode. Thus, the wind deflector 3 can be flexibly moved to the corresponding position for shielding according to the actual drying status of the electrode coating and process requirements. This can specifically improve the drying defects that may occur in different positions of the electrode, solving the technical problems existing in the prior art. It achieves fine control of the electrode coating drying process, effectively avoiding problems such as cracking and curling of the coating due to uneven drying, improving the quality and consistency of the electrode coating, and helping to improve the overall performance and reliability of the battery.

[0038] Based on this, multiple wind baffles 3, such as two, can be set on the outside of the air supply box 1. The two wind baffles 3 are respectively set at both ends of the air supply box 1. Furthermore, a pull handle can be set on the wind baffle 3 to facilitate the adjustment of the position of the wind baffle 3.

[0039] An optional solution of this utility model embodiment is as follows: Figure 2 As shown, the wind deflector assembly 3 includes a first wind deflector plate 31 and a second wind deflector plate 32. The first wind deflector plate 31 has a plurality of first ventilation holes 311, and the second wind deflector plate 32 has a second ventilation hole 321. The number of second ventilation holes 321 is the same as the number of first ventilation holes 311 and the holes have the same diameter. The first wind deflector plate 31 covers the outside of the air supply box 1, and the first ventilation holes 311 face the air outlet 11. The second wind deflector plate 32 covers the outside of the first wind deflector plate 31, and the second ventilation holes 321 can face the first ventilation holes 311. The first wind deflector plate 31 and the second wind deflector plate 32 are both set on the track groove 2 and can move on the track groove 2. In order to facilitate movement, the first wind deflector plate 31 and the second wind deflector plate 32 can also be provided with a pull handle.

[0040] By moving the first baffle plate 31 and / or the second baffle plate 32, the first vent 311 and the second vent 321 can partially or completely overlap, thereby changing the ventilation area and airflow of the air outlet 11 and adjusting the drying state of different areas of the electrode. For example, by moving the first baffle plate 31 and / or the second baffle plate 32, the first vent 311 and the second vent 321 can be made to completely overlap. At this time, airflow passes through the air outlet 11 and then through the first vent 311 and the second vent 321. The drying air volume is maximized at hole 321. Reducing the overlap between the first ventilation hole 311 and the second ventilation hole 321 can reduce the drying air volume. For example, both the first ventilation hole 311 and the second ventilation hole 321 can be circular. By introducing the first baffle plate 31 and the second baffle plate 32, and combining the flexible movement function of the track groove 2, precise control of the air force distribution at the air outlet 11 is achieved, solving the problem of uneven drying of the electrode coating and improving the quality and production efficiency of the battery electrode.

[0041] An optional solution of this utility model embodiment is as follows: Figure 2 As shown, the first ventilation holes 311 are arranged at equal intervals on the first wind baffle 31, and the distance between adjacent first ventilation holes 311 is not less than twice the diameter of the first ventilation hole 311. The second ventilation holes 321 are arranged at equal intervals on the second wind baffle 32, and the distance between adjacent second ventilation holes 321 is not less than twice the diameter of the second ventilation hole 321.

[0042] The evenly spaced first ventilation holes 311 ensure that the drying air is evenly distributed when passing through the first baffle plate 31, forming a relatively stable airflow. This arrangement ensures that the airflow can act relatively evenly on the electrode surface after initially passing through the first ventilation holes 311, avoiding mutual interference of airflow due to excessively small hole spacing, which would affect the uniformity of airflow distribution. Setting the hole spacing to more than twice the hole diameter ensures that when the first baffle plate 31 and / or the second baffle plate 32 are moved, the first ventilation holes 311 and the second ventilation holes 321 can be completely blocked, thereby completely blocking the air outlet 11 within the range of the baffle assembly 3. In some cases, excessive drying may lead to a decrease in the performance of the electrode coating. For example, excessive solvent evaporation may cause damage to the internal structure of the coating. Completely blocking the air outlet 11 can effectively prevent certain areas from becoming over-dryed due to excessive airflow, which helps to protect the integrity of the electrode coating and reduce defects caused by excessive drying.

[0043] An optional solution of this utility model embodiment is as follows: Figure 3As shown, the track trough 2 includes a first track trough 21 and a second track trough 22. The first baffle plate 31 can move within the first track trough 21, and the second baffle plate 32 can move on the second track trough 22. The movement of the first baffle plate 31 within the first track trough 21 and the movement of the second baffle plate 32 within the second track trough 22 allow the two baffle plates to be adjusted independently, providing more flexible shading options. This enables independent adjustment of the wind force in different areas, improving the control precision of the drying process. In addition, the design of the first track trough 21 and the second track trough 22 ensures that the baffle plates will not shift or shake during movement, guaranteeing the accuracy of adjustment and the stability of the equipment.

[0044] An optional solution of this utility model embodiment is as follows: Figure 3 As shown, the track groove 2 also includes a third track groove 23, and the air supply box 1 is set in the third track groove 23 and can move within the third track groove 23. By setting the third track groove 23, the air supply box 1 can move, thereby better adapting to electrode sheets of different sizes and shapes, as well as the requirements of different coating processes, improving the versatility and flexibility of the equipment. The movement of the air supply box 1 can also optimize the air field distribution, ensuring that all areas of the electrode sheet can receive uniform air force, reducing defects caused by uneven drying.

[0045] Example 2

[0046] Embodiment 2 of this utility model, based on Embodiment 1, further defines the clamping wheel 24, such as... Figure 4 As shown, a clamping wheel 24 is provided in the first rail groove 21 and / or the second rail groove 22. The clamping wheel 24 can rotate within the first rail groove 21 and / or the second rail groove 22. The clamping wheel 24 is used to clamp the first wind deflector 31 and / or the second wind deflector 32 so that the first wind deflector 31 and / or the second wind deflector 32 can move on the clamping wheel 24. The clamping wheel 24 rotates within the rail groove (first rail groove 21 or second rail groove 22), clamping and guiding the wind deflector (first wind deflector 31 or second wind deflector 32) to move along the rail groove. Specifically, the clamping wheel 24 includes upper and lower rows of rollers, the upper row of rollers being rotatable. The upper row of rollers is positioned above the track groove, while the lower row of rollers is rotatably positioned below the track groove. The baffle plate is clamped between the upper and lower rollers and moves with the rotation of the rollers. For example, the clamping wheel 24 can be a rubber wheel. The design of the clamping wheel 24 ensures that the baffle plate remains stable during movement and will not cause inaccurate adjustment due to shaking or displacement, thus improving the overall stability and reliability of the equipment. In addition, the clamping wheel 24 changes the direct sliding friction between the baffle plate and the track groove to rolling friction, which can reduce the wear of components, extend the service life of the equipment, and at the same time make the movement of the baffle plate smoother.

[0047] Example 3

[0048] In embodiment 3 of this utility model, based on embodiment 1 or embodiment 2, the positioning component 33 is further defined, such as... Figure 5 As shown, the windshield assembly 3 also includes a positioning assembly 33. The positioning assembly 33 includes an elastic protrusion 331 and a positioning groove 332. The elastic protrusion 331 is fixedly disposed on the outer side of the first windshield plate 31, and the positioning groove 332 is formed on the inner side of the second windshield plate 32. For example, the elastic protrusion 331 can be made of rubber and fixedly disposed on the outer side of the first windshield plate 31 by adhesive. The positioning groove 332 can be stamped into a groove shape to cooperate with the elastic protrusion 331. When the first windshield plate 31 or the second windshield plate 32 is moved, the elastic protrusion... 331 can slide into the positioning groove 332 to fix the first wind deflector 31 and the second wind deflector 32 relative to each other; through the cooperation of the elastic protrusion 331 and the positioning groove 332, the first wind deflector 31 and the second wind deflector 32 are fixed relative to each other in a specific position, ensuring that after the wind deflector position is adjusted, the two can remain stable and will not shift due to external force or vibration. The design of the elastic protrusion 331 allows the wind deflector to be moved when a certain force is applied to overcome the elastic resistance, so that the elastic protrusion 331 slides out of the positioning groove 332, thereby facilitating position adjustment.

[0049] Based on this, multiple positioning grooves 332 can be provided and located at different positions on the inner side of the second wind deflector 32. The elastic protrusion 331 cooperates with the positioning grooves 332 at different positions to adjust the relative position between the first wind deflector 31 and the second wind deflector 32.

[0050] Example 4

[0051] Embodiment 4 of this utility model is based on Embodiment 1, Embodiment 2, or Embodiment 3, such as... Figure 6 As shown, the wind deflector assembly 3 also includes a first sealing gasket layer 34, which is placed between the first wind deflector plate 31 and the second wind deflector plate 32 to prevent drying air from entering between the first wind deflector plate 31 and the second wind deflector plate 32. The first sealing gasket layer 34 is placed between the first wind deflector plate 31 and the second wind deflector plate 32 to form a sealing barrier, preventing drying air from entering the gap between them, ensuring that the drying air flows along a predetermined path, avoiding air leakage between the wind deflector plates, improving air utilization efficiency, and also reducing unnecessary noise and vibration caused by air leakage, improving the stability of equipment operation, and improving the production environment.

[0052] An optional solution of this utility model embodiment is as follows: Figure 6As shown, the wind deflector assembly 3 also includes a second sealing gasket layer 35, which is placed between the first wind deflector plate 31 and the air supply box 1 to prevent drying air from entering between the first wind deflector plate 31 and the air supply box 1. Through the sealing effect of the second sealing gasket layer 35, leakage of drying air between the first wind deflector plate 31 and the air supply box 1 is effectively prevented, thereby improving the utilization efficiency of drying air and the stability of the equipment. This helps to optimize the drying process and improve the production quality and efficiency of battery electrode sheets.

[0053] Example 5

[0054] Embodiment 5 of this utility model provides an oven for battery electrodes, including an oven body and an oven air supply device for reducing cracking of lithium-ion battery electrodes as described in Embodiments 1, 2, 3, or 4. The oven body is connected to the oven air supply device for reducing cracking of lithium-ion battery electrodes to deliver drying air to the battery electrodes. With the help of the oven air supply device for reducing cracking of lithium-ion battery electrodes as described in Embodiments 1, 2, 3, or 4, the oven in this embodiment can not only solve the problem of easy cracking at the edge of the electrode, but also specifically improve the drying defects that may occur in other parts of the electrode.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oven air supply device for reducing cracking of lithium-ion battery electrodes, characterized in that, The device includes an air supply box, a track groove, and a wind baffle assembly. The air inlet of the air supply box is connected to the oven, and the air outlet of the air supply box faces the battery electrode to dry the battery electrode with air from the oven. The track groove is fixedly installed on the oven, and the wind baffle assembly can move in the track groove and block the air outlet at different positions, thereby adjusting the drying state of different areas on the battery electrode.

2. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 1, characterized in that, The windbreak assembly includes a first windbreak plate and a second windbreak plate. The first windbreak plate has a first ventilation hole, and the second windbreak plate has a second ventilation hole. The number of second ventilation holes is the same as the number of first ventilation holes, and the holes have the same diameter. The first windbreak plate covers the outside of the air supply box, and the first ventilation hole faces the air outlet. The second windbreak plate covers the outside of the first windbreak plate, and the second ventilation hole can face the first ventilation hole. Both the first windbreak plate and the second windbreak plate are mounted on the track groove and can move on the track groove.

3. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 2, characterized in that, The first ventilation holes are evenly spaced on the first windbreak plate, and the distance between adjacent first ventilation holes is not less than twice the diameter of the first ventilation hole. The second ventilation holes are evenly spaced on the second windbreak plate, and the distance between adjacent second ventilation holes is not less than twice the diameter of the second ventilation hole.

4. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 2, characterized in that, The track groove includes a first track groove and a second track groove. The first wind deflector can move within the first track groove, and the second wind deflector can move on the second track groove.

5. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 4, characterized in that, The track groove also includes a third track groove, and the air supply box is disposed in the third track groove and can move within the third track groove.

6. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 4, characterized in that, The first rail groove and / or the second rail groove are provided with clamping wheels, which are used to clamp the first wind deflector and / or the second wind deflector so that the first wind deflector and / or the second wind deflector can move on the clamping wheels.

7. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 2, characterized in that, The windbreak assembly further includes a positioning component, which includes an elastic protrusion and a positioning groove. The elastic protrusion is fixedly disposed on the outer side of the first windbreak plate, and the positioning groove is formed on the inner side of the second windbreak plate. When the first windbreak plate or the second windbreak plate is moved, the elastic protrusion can slide into the positioning groove to fix the first windbreak plate and the second windbreak plate relative to each other.

8. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 2, characterized in that, The windbreak assembly further includes a first sealing gasket layer, which is placed between the first windbreak plate and the second windbreak plate to prevent drying air from entering between the first windbreak plate and the second windbreak plate.

9. The oven air supply device for reducing cracking of lithium-ion battery electrodes according to claim 8, characterized in that, The windbreak assembly further includes a second sealing gasket layer, which is disposed between the first windbreak plate and the air supply box to prevent the drying air from entering between the first windbreak plate and the air supply box.

10. An oven for drying battery electrodes, characterized in that, The device includes an oven body and an oven air supply device for reducing cracking of lithium-ion battery electrodes as described in any one of claims 1-9, wherein the oven body is connected to the oven air supply device for reducing cracking of lithium-ion battery electrodes to deliver drying air to the battery electrodes.

Images