Battery pole production line

Abstract

The application relates to a battery pole piece production line. The battery pole piece production line comprises a first ground rail, a first coating system, a baking mechanism, a second ground rail, a second coating system and a winding mechanism, the first ground rail extends along the horizontal direction and is used for laying on the ground; the first coating system comprises a unwinding mechanism, a first deviation rectifying mechanism and a first coating machine, and the unwinding mechanism, the first deviation rectifying mechanism and the first coating machine are respectively installed on the first ground rail; the baking mechanism is located on one side of the first ground rail; the second ground rail is located on the side of the baking mechanism away from the first ground rail, the second ground rail extends along the horizontal direction and is used for laying on the ground; the second coating system comprises a second coating machine, a second deviation rectifying mechanism and a first traction mechanism, and the second coating machine, the second deviation rectifying mechanism and the first traction mechanism are respectively installed on the second ground rail; and the winding mechanism is located on the side of the first ground rail away from the baking mechanism. The scheme provided by the application can reduce the deviation degree of the pole piece plate.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to battery electrode production lines. Background Technology

[0002] In the battery electrode coating process, the sheet material is typically released by an unwinding mechanism. The sheet material passes through multiple rollers to flatten and wrinkle it before reaching the main coating roller. The main coating roller rotates synchronously with the sheet material and supports it, ensuring a smooth surface during coating. After adjustment, a die extrudes a uniform slurry onto the sheet material, completing the coating process. The sheet material is then dried in a first-layer oven, and after the same steps, it enters a second-layer oven. This repeated coating and drying process forms the composite material.

[0003] In related technologies, before the board enters the drying oven, it usually requires a traction mechanism, a correction mechanism, and a coating machine. During this process, the center of the traction mechanism, the correction mechanism, and the coating machine directly affects the degree of deviation of the belt, and the error will accumulate with the production process, causing the board to form an S-shaped belt, increasing the risk of the board wrinkling. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a battery electrode production line that can reduce the deviation of electrode plates and reduce the accumulation of errors.

[0005] This application provides a battery electrode production line, comprising a first ground rail, a first coating system, a baking mechanism, a second ground rail, a second coating system, and a winding mechanism. The first ground rail extends horizontally and is laid on the ground. The first coating system includes an unwinding mechanism, a first alignment mechanism, and a first coating machine, which are respectively installed on the first ground rail. The baking mechanism is located on one side of the first ground rail. The second ground rail is located on the side of the baking mechanism opposite to the first ground rail, and extends horizontally, also laid on the ground. The second coating system includes a second coating machine, a second alignment mechanism, and a first traction mechanism, which are respectively installed on the second ground rail. The winding mechanism is located on the side of the first ground rail opposite to the baking mechanism.

[0006] Furthermore, the first ground rail is provided with a first dovetail block, and the unwinding mechanism, the first correction mechanism and the first coating machine are respectively provided with a first dovetail groove corresponding to the first dovetail block. The first dovetail block extends into the first dovetail groove and cooperates with the first dovetail groove.

[0007] Furthermore, the first coating system also includes a thickness measuring mechanism, which is used to detect the thickness of the electrode plate and is installed on the first ground rail.

[0008] Furthermore, the first ground rail and the second ground rail are at the same altitude.

[0009] Furthermore, the second ground rail extends in the direction of the first ground rail.

[0010] Furthermore, the battery electrode production line also includes a third ground rail, which extends horizontally and is laid on the ground. The winding mechanism is installed on the third ground rail.

[0011] Furthermore, the third ground rail extends in the direction of the first ground rail.

[0012] Furthermore, the battery electrode production line also includes a second traction mechanism, which is located between the winding mechanism and the unwinding mechanism. The second traction mechanism is used to pull the electrode sheet in the baking mechanism to the winding mechanism.

[0013] Furthermore, the baking mechanism includes a first oven and a second oven. The first oven is located between the first coating machine and the first traction mechanism, and the second oven is located between the second coating machine and the winding mechanism. The first oven is used to receive the electrode sheet output by the first coating machine and bake the electrode sheet, and the second oven is used to receive the electrode sheet output by the second coating machine and bake the electrode sheet.

[0014] Furthermore, the second traction mechanism is located above the winding mechanism, and the second layer oven is located above the first layer oven. The second traction mechanism is used to traction the electrode sheet material output from the second layer oven.

[0015] The technical solution provided in this application may include the following beneficial results: By installing the unwinding mechanism, the first correction mechanism, and the first coating machine on the same first ground rail, the unwinding mechanism, the first correction mechanism, and the first coating machine can avoid installation errors caused by ground elevation differences. By installing the second coating machine, the second correction mechanism, and the first traction mechanism on the same second ground rail, the second coating machine, the second correction mechanism, and the first traction mechanism can avoid installation errors caused by ground elevation differences. At the same time, it also plays a positive role in preventing potential foundation settlement and other later problems. It avoids the formation of an S-shaped electrode plate due to the independent installation of each mechanism and prevents the electrode plate from wrinkling due to parallelism.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a schematic diagram of the structure of a battery electrode production line shown in an embodiment of this application; Figure 2 This is a cross-sectional view of a battery electrode production line shown in an embodiment of this application; Figure 3 yes Figure 2 Enlarged view of section A.

[0019] Reference numerals: First ground rail 1; First dovetail block 11; First coating system 2; Unwinding mechanism 21; First correction mechanism 22; First coating machine 23; Thickness measuring mechanism 24; Baking mechanism 3; First drying oven 31; Second drying oven 32; Second ground rail 4; Second coating system 5; Second coating machine 51; Second correction mechanism 52; First traction mechanism 53; Rewinding mechanism 6; Third ground rail 7; Second traction mechanism 8. Detailed Implementation

[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0021] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In related technologies, before the sheet metal enters the drying oven, it typically requires a traction mechanism, a web-correcting mechanism, and a coating machine. During this process, the center of the traction mechanism, web-correcting mechanism, and coating machine directly affects the degree of deviation of the belt conveyor, and the error accumulates with the production process, causing the sheet metal to form an S-shaped belt conveyor, increasing the risk of wrinkling. To address the above problems, this application provides a battery electrode sheet production line that can reduce the degree of deviation of the electrode sheet and reduce the accumulation of errors.

[0025] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0026] See Figure 1 The battery electrode production line includes a first ground rail 1, a first coating system 2, a baking mechanism 3, a second ground rail 4, a second coating system 5, and a winding mechanism 6. The first ground rail 1 extends horizontally and can be laid on the ground.

[0027] See Figure 1 The first coating system 2 includes an unwinding mechanism 21, a first web guiding mechanism 22, and a first coating machine 23. The unwinding mechanism 21 outputs electrode sheets. The first web guiding mechanism 22 guides the electrode sheets during transmission, ensuring they maintain the correct position and angle. The first coating machine 23 applies a slurry to the electrode sheets. In actual operation, the electrode sheets output by the unwinding mechanism 21 are guided by the roller assembly to the first web guiding mechanism 22, which then guides them. After guidance, the electrode sheets reach the first coating machine 23, which applies the slurry to one side of the electrode sheets.

[0028] See Figure 1 The unwinding mechanism 21, the first correction mechanism 22, and the first coating machine 23 are respectively installed on the first ground rail 1, and are arranged sequentially along the transmission direction of the electrode sheet. The unwinding mechanism 21, the first correction mechanism 22, and the first coating machine 23 can slide on the first ground rail 1 along the extension direction of the first ground rail 1, thereby adjusting the distance between the unwinding mechanism 21 and the first correction mechanism 22 or the distance between the first correction mechanism 22 and the first coating machine 23.

[0029] See Figure 1 The baking mechanism 3 is located on one side of the first ground rail 1 and can be directly fixed to the ground. The baking mechanism 3 is used to bake the electrode sheet coated with slurry, causing the slurry to solidify on the electrode sheet. The second ground rail 4 is located on the side of the baking mechanism 3 facing away from the first ground rail 1, i.e., the baking mechanism 3 is located between the first ground rail 1 and the second ground rail 4. The second ground rail 4 extends horizontally and can be laid on the ground. The second coating system 5 includes a second coating machine 51, a second correction mechanism 52, and a first traction mechanism 53. The second correction mechanism 52 can correct the electrode sheet during transmission, ensuring the electrode sheet maintains the correct position and angle during transmission. The second coating machine 51 can apply slurry to the electrode sheet. The first traction mechanism 53 is used to drive the electrode sheet, allowing it to be transmitted from the unwinding mechanism 21 to the second coating machine 51.

[0030] See Figure 1 In actual operation, the side of the electrode plate coated with slurry is baked by the baking mechanism 3 and then reaches the first traction mechanism 53. Driven by the first traction mechanism 53, the electrode plate continues to be transmitted to the second correction mechanism 52. The second correction machine then corrects the electrode plate. After correction, the electrode plate reaches the second coating machine 51. The second coating machine 51 applies slurry to the side of the electrode plate that is not coated with slurry, so that both sides of the electrode plate are coated with slurry.

[0031] See Figure 1 The second coating machine 51, the second correction mechanism 52, and the first traction mechanism 53 are respectively installed on the second ground rail 4. The first traction mechanism 53, the second correction mechanism 52, and the second coating machine 51 are arranged sequentially along the transmission direction of the electrode plate. The second coating machine 51, the second correction mechanism 52, and the first traction mechanism 53 can slide on the second ground rail 4 along the extension direction of the second ground rail 4, thereby adjusting the distance between the first traction mechanism 53 and the second correction mechanism 52 or the distance between the second correction mechanism 52 and the second coating machine 51.

[0032] See Figure 1After the electrode sheet is coated with slurry by the second coating machine 51, it enters the baking mechanism 3 under the guidance of the roller assembly. The baking mechanism 3 bakes the electrode sheet, ensuring that the slurry on both sides of the electrode sheet is fixed to the electrode sheet. The winding mechanism 6 is located on the side of the first ground rail 1 opposite to the baking mechanism 3. After the slurry on both sides of the electrode sheet is baked by the baking mechanism 3, it is then wound up by the winding mechanism 6.

[0033] This application avoids installation errors caused by ground elevation differences by installing the unwinding mechanism 21, the first correction mechanism 22, and the first coating machine 23 on the same first ground rail 1. Similarly, installing the second coating machine 51, the second correction mechanism 52, and the first traction mechanism 53 on the same second ground rail 4 also avoids installation errors caused by ground elevation differences. This also has a positive effect on potential later problems such as foundation settlement. Furthermore, it avoids the formation of an S-shaped electrode plate due to the independent installation of each mechanism, and prevents wrinkling of the electrode plate due to parallelism.

[0034] See Figure 1-3 The first ground rail 1 is provided with a first dovetail block 11, which is located at the top of the first ground rail 1. The bottom of the unwinding mechanism 21, the bottom of the first correction mechanism 22, and the bottom of the first coating machine 23 are respectively provided with a first dovetail groove corresponding to the first dovetail block 11. The first dovetail block 11 extends into the first dovetail groove and cooperates with it. By the cooperation of the first dovetail block 11 with the first dovetail groove, the unwinding mechanism 21, the first correction mechanism 22, or the first coating machine 23 can be prevented from tilting in the width direction of the first ground rail 1, thereby ensuring that the unwinding mechanism 21, the first correction mechanism 22, and the first coating machine 23 are more stable. The second ground rail 4 is provided with a second dovetail block, which is located at the top of the second ground rail 4. The bottom of the second coating machine 51, the bottom of the second correction mechanism 52, and the bottom of the first traction mechanism 53 are respectively provided with a second dovetail groove corresponding to the second dovetail block. The second dovetail block extends into the first dovetail groove and cooperates with it. By cooperating with the second dovetail block and the second dovetail groove, the first traction mechanism 53, the second correction mechanism 52, or the second coating machine 51 can be prevented from tilting in the width direction of the second ground rail 4, thereby ensuring that the first traction mechanism 53, the second correction mechanism 52, and the second coating machine 51 are more stable.

[0035] See Figure 1The first coating system 2 also includes a thickness measuring mechanism 24, which is used to detect the thickness of the electrode sheet. The thickness measuring mechanism 24 is installed on the first ground rail 1. The thickness measuring mechanism 24 is located between the unwinding mechanism 21 and the first web guiding mechanism 22. The electrode sheet output from the unwinding mechanism 21 first passes through the thickness measuring mechanism 24 and then is guided to the first web guiding mechanism 22 by the roller assembly. The bottom of the thickness measuring mechanism 24 is also provided with a first dovetail groove, which cooperates with the first dovetail block 11. The thickness measuring mechanism 24 can slide along the extension direction of the first ground rail 1.

[0036] See Figure 1 The first ground rail 1 and the second ground rail 4 are at the same height. By installing the unwinding mechanism 21, the first correction mechanism 22, the first coating machine 23, the second coating machine 51, the second correction mechanism 52, and the first traction mechanism 53 on the first ground rail 1 or the second ground rail 4 at the same height, the first coating system 2 and the second coating system 5 can avoid installation errors caused by the difference in ground elevation, and also play a certain role in preventing potential foundation settlement and other later problems.

[0037] See Figure 1 In some embodiments, the second ground rail 4 is aligned with the first ground rail 1 in the extension direction of the first ground rail 1, so that when the electrode plate passes through the first coating system 2 and the second coating system 5, the deviation of the electrode plate in the width direction of the first ground rail 1 can be reduced, thereby improving the accuracy of the electrode plate coating.

[0038] See Figure 1 In some embodiments, the battery electrode production line further includes a third ground rail 7, which extends horizontally and is laid on the ground. A winding mechanism 6 is mounted on the third ground rail 7. The winding mechanism 6 can slide along the extension direction of the third ground rail 7, thereby facilitating position adjustment. A third dovetail block is provided at the top of the third ground rail 7, and a third dovetail groove is provided at the bottom of the winding mechanism 6. The third dovetail block matches the third dovetail groove, thereby improving the stability of the connection between the winding mechanism 6 and the third ground rail 7.

[0039] See Figure 1 In some embodiments, the third ground rail 7 is positioned at the same height as the first ground rail 1 along the extension direction of the first ground rail 1. By installing the unwinding mechanism 21, the first correction mechanism 22, the first coating machine 23, the second coating machine 51, the second correction mechanism 52, and the first traction mechanism 53 on the first ground rail 1 or the second ground rail 4 at the same height, the first coating system 2 and the second coating system 5 can avoid installation errors caused by differences in ground elevation, and also play a role in preventing potential foundation settlement and other later problems.

[0040] See Figure 1 The battery electrode production line also includes a second traction mechanism 8, which is located between the winding mechanism 6 and the unwinding mechanism 21. The second traction mechanism 8 is used to pull the electrode sheet in the baking mechanism 3 to the winding mechanism 6, thereby ensuring that the electrode sheet can be folded back from the second coating machine 51 to the baking mechanism 3 and pass through the baking mechanism 3.

[0041] See Figure 1 The baking mechanism 3 includes a first oven 31 and a second oven 32. The first oven 31 is located between the first coating machine 23 and the first traction mechanism 53, and the second oven 32 is located between the second coating machine 51 and the winding mechanism 6. The first oven 31 is used to receive the electrode sheet output from the first coating machine 23 and bake the electrode sheet. The second oven 32 is used to receive the electrode sheet output from the second coating machine 51 and bake the electrode sheet. Since the electrode sheet has two sides, let one side of the electrode sheet be the first side and the other side be the second side. The first coating machine 23 can apply slurry to the first side, and the first oven 31 can bake the first side to form a stable composite material with the slurry. Similarly, the second coating machine 51 can apply slurry to the second side, and the second oven 32 can bake the second side to form a stable composite material with the slurry.

[0042] See Figure 1 In some embodiments, the second oven 32 is located above the first oven 31. By placing the second oven 32 above the first oven 31, the space occupied by the baking mechanism 3 is reduced. The second traction mechanism 8 is located above the winding mechanism 6. The second traction mechanism 8 is used to pull the electrode sheet output from the second oven 32. The second traction mechanism 8 and the second oven 32 are at the same height, which facilitates the second traction mechanism 8 to pull the electrode sheet out of the second oven 32. In addition, by placing the second traction mechanism 8 above the winding mechanism 6, the second traction mechanism 8 is avoided from occupying the space between the winding mechanism 6 and the unwinding mechanism 21.

[0043] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0044] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A battery electrode production line, characterized in that, include: The first ground rail extends horizontally and is used to be laid on the ground; The first coating system includes an unwinding mechanism, a first web guiding mechanism, and a first coating machine, wherein the unwinding mechanism, the first web guiding mechanism, and the first coating machine are respectively installed on the first ground rail; A baking mechanism, located on one side of the first ground rail; The second ground rail is located on the side of the baking mechanism opposite to the first ground rail. The second ground rail extends horizontally and is used to be laid on the ground. The second coating system includes a second coating machine, a second correction mechanism, and a first traction mechanism, wherein the second coating machine, the second correction mechanism, and the first traction mechanism are respectively installed on the second ground rail; A winding mechanism is located on the side of the first ground rail opposite to the baking mechanism.

2. The battery electrode production line according to claim 1, characterized in that: The first ground rail is provided with a first dovetail block, and the unwinding mechanism, the first correction mechanism and the first coating machine are respectively provided with a first dovetail groove corresponding to the first dovetail block. The first dovetail block extends into the first dovetail groove and cooperates with the first dovetail groove.

3. The battery electrode production line according to claim 1, characterized in that: The first coating system also includes a thickness measuring mechanism, which is used to detect the thickness of the electrode plate and is installed on the first ground rail.

4. The battery electrode production line according to claim 1, characterized in that: The first and second ground rails are at the same height.

5. The battery electrode production line according to claim 4, characterized in that: The second ground rail extends in the same direction as the first ground rail.

6. The battery electrode production line according to claim 1, characterized in that: It also includes a third ground rail, which extends horizontally and is used to be laid on the ground, and the winding mechanism is installed on the third ground rail.

7. The battery electrode production line according to claim 6, characterized in that: The third ground rail extends in the direction of the first ground rail.

8. The battery electrode production line according to claim 1, characterized in that: It also includes a second traction mechanism, which is located between the winding mechanism and the unwinding mechanism, and is used to pull the electrode sheet in the baking mechanism to the winding mechanism.

9. The battery electrode production line according to claim 8, characterized in that: The baking mechanism includes a first baking oven and a second baking oven. The first baking oven is located between the first coating machine and the first traction mechanism, and the second baking oven is located between the second coating machine and the winding mechanism. The first baking oven is used to receive the electrode sheet output by the first coating machine and bake the electrode sheet, and the second baking oven is used to receive the electrode sheet output by the second coating machine and bake the electrode sheet.

10. The battery electrode production line according to claim 9, characterized in that: The second traction mechanism is located above the winding mechanism, and the second layer oven is located above the first layer oven. The second traction mechanism is used to traction the electrode sheet material output from the second layer oven.

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