Electrode alignment device

Abstract

This application relates to the field of battery processing technology and discloses an electrode correction device, including a clamping assembly, a first correction assembly, and a second correction assembly. The clamping assembly includes a first roller and a second roller spaced apart along a first direction. The first correction assembly includes a support plate with a bearing surface on one side. The support plate supports at least a portion of the second correction assembly and the clamping assembly. The support plate is configured to rotate about an axis in a second direction and drive the first roller and the second roller to rotate. The second correction assembly connects the first roller and the second roller and is slidably connected to the support plate. The second correction assembly is configured to drive the first roller and the second roller to slide along a third direction. This application enables the clamping assembly to achieve correction freedom in both the electrode width direction and the rotation direction, improving correction accuracy. This application overcomes the wrinkling problem easily caused by correction during electrode width direction travel and is suitable for the winding production of thin electrodes.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, and in particular to an electrode correction device. Background Technology

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0003] In battery manufacturing, winding equipment is used to wind electrodes. Before winding, to ensure the electrode material positions meet continuous production requirements, the electrodes need to be clamped and corrected, i.e., the electrode's material line position is adjusted by moving it along its width. In production scenarios, some electrodes are too thin. To prevent the electrodes from wrinkling during clamping, the travel distance of the clamping and correcting mechanism in the electrode width direction needs to be limited. This negatively impacts the correction effect and the consistency of the electrode edges. Therefore, improving the clamping and correcting effect of thin electrode feed is one of the industry's research and development topics. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides an electrode correction device.

[0005] This application is achieved through the following technical solution.

[0006] Embodiments of this application provide an electrode alignment device. In some embodiments, the electrode alignment device includes a clamping assembly, a first alignment assembly, and a second alignment assembly. The clamping assembly includes a first roller and a second roller spaced apart along a first direction. The clamping assembly is used to clamp the electrode. The axes of the first roller and the second roller are parallel. The first alignment assembly includes a support plate with a support surface on one side. The support plate supports at least a portion of the second alignment assembly and the clamping assembly. The support plate is configured to rotate about an axis in a second direction and drive the first roller and the second roller to rotate. The second alignment assembly connects the first roller and the second roller and is slidably connected to the support plate. The second alignment assembly is configured to drive the first roller and the second roller to slide along a third direction. The first direction is the thickness direction of the electrode, the third direction is the width direction of the electrode, and the second direction intersects the first direction and the third direction.

[0007] In the technical solution of this application embodiment, since the electrode correction device integrates the first correction component and the second correction component on the same support platform, the first correction component drives the clamping component to rotate, and the second correction component drives the clamping component to translate. This enables the clamping component to achieve correction freedom in both the electrode width direction and the rotation direction, while simultaneously correcting the composite deviation of the electrode in the third and second directions, thus improving correction accuracy. Compared to traditional single-degree-of-freedom correction, the device can overcome the wrinkling problem easily caused by correction in the electrode width direction, and is more suitable for the winding production of thin electrodes such as sodium electrode sheets, improving the specific correction effect and helping to improve the overall neatness and yield of the wound electrode products.

[0008] In some embodiments, the first correction component includes a first drive component, and the other side of the support plate is connected to the first drive component, the first drive component being used to drive the support plate to rotate.

[0009] In the technical solution of this application embodiment, since the first driving component is disposed on the other side of the support plate and isolated from the support surface, the operation of the driving component will not interfere with the operation of the second correction component and the clamping component on the support surface. This simplifies the structural complexity, makes the device layout compact, and ensures that each component does not interfere with the others, thereby reducing the overall size of the device and improving its installation adaptability. In addition, the driving torque of the first driving component can be directly and evenly transmitted to the entire support plate, improving the stability and accuracy of angle correction.

[0010] In some embodiments, the first correction component includes a rotating plate disposed at the output end of the first drive component, and the support plate has a groove on the side near the first drive component, the rotating plate being embedded in the groove, and the rotating plate being configured to drive the support plate to rotate.

[0011] In the technical solution of this application embodiment, since the rotating plate is embedded in the groove on the back of the bearing plate, the contact area between the two is large, which can further improve the uniformity of torque transmission and the stability of angle correction. In addition, the assembly structure is simple, reducing the assembly difficulty and improving the installation efficiency and maintenance convenience.

[0012] In some embodiments, the clamping assembly includes a first mounting plate, a second mounting plate, and a second driving assembly. The first roller is connected to the first mounting plate, the second roller is connected to the second mounting plate, the second driving assembly is disposed on the first mounting plate, and the output end of the second driving assembly is connected to the second mounting plate. The second driving assembly is configured to drive the first roller and the second roller to move closer to or further away from each other along the first direction.

[0013] In the technical solution of this application embodiment, the first mounting plate, the second mounting plate, and the second driving assembly can work together to control the gap between the first roller and the second roller, thereby achieving clamping or releasing actions. Furthermore, the clamping assembly is independent and its operation is not affected by changes in width or angle correction. Additionally, the two rollers can remain parallel during clamping, and the clamping force is evenly distributed along the width direction of the electrode sheet, preventing damage to the electrode sheet.

[0014] In some embodiments, the clamping assembly includes at least one first sliding assembly, the first sliding assembly including a first slide rail and a first slider, one of which is disposed on the first mounting plate and the other is connected to the second mounting plate; the first slider slides in cooperation with the first slide rail, and the first slide rail extends along the first direction.

[0015] In the technical solution of this application embodiment, since a first sliding component is provided between the first mounting plate and the second mounting plate, it can provide precise guidance for the movement of the second mounting plate, allowing the second mounting plate to move along a preset first direction. The sliding fit reduces frictional resistance during movement, improves the parallelism of the axes of the first and second rollers, and facilitates the uniform distribution of clamping force along the electrode width direction, thus improving clamping stability. Furthermore, the first slide rail constrains the first slider in the third direction. During the width correction movement, the first slider can be driven by the movement of the first slide rail itself, enabling the two mounting plates to move synchronously without offset, achieving electrode width correction.

[0016] In some embodiments, the second correction component includes a third drive component, the output of which is connected to the first mounting plate or the second mounting plate, and the third drive component is configured to drive the first roller and the second roller to move along the third direction.

[0017] In the technical solution of this application embodiment, since the third driving component is directly connected to the clamping component, the overall translational driving of the entire clamping component is realized. Furthermore, during the width correction process, the electrode can be translated in a stable clamping state, avoiding the undesirable situation of the electrode wrinkling during the correction process.

[0018] In some embodiments, the second correction component includes at least one second sliding component, the second sliding component including a second slide rail and a second slider, one of which is disposed on the support plate and the other is connected to the first mounting plate; the second slider slides in cooperation with the second slide rail, and the second slide rail extends along the third direction.

[0019] In the technical solution of this application embodiment, since the second sliding component is disposed on the support plate and connected to the clamping component, the clamping component can perform the width correction action in coordination with the angle correction action without causing action interference, thereby realizing the positional correction of the electrode angle and width and improving the correction effect under complex deviation conditions. In addition, the second slide rail constrains the second slider. During the angle correction rotation, the second slider can be driven by the rotation of the second slide rail itself to drive the clamping component to rotate synchronously, thereby realizing the electrode angle correction.

[0020] In some embodiments, the second correction component includes a movable block disposed at the output end of the third drive component, the first mounting plate has a first groove, the movable block is partially embedded in the first groove, and the movable block abuts against the groove wall of the first groove along the third direction.

[0021] In the technical solution of this application embodiment, since the movable block is partially embedded in the first groove of the first mounting plate and abuts against the groove wall along the third direction, the driving force of the third driving component can be directly transmitted to the first mounting plate through the abutment surface between the movable block and the groove wall, driving the first mounting plate and other structures of the clamping component to move along the third direction for width correction. Furthermore, the connection structure is simple, reducing assembly difficulty.

[0022] In some embodiments, the second correction component includes a plurality of connecting blocks, which are respectively connected to the second slider and the first mounting plate. At least one of the connecting blocks has a second groove, which communicates with the first groove, and the movable block is partially embedded in the second groove.

[0023] In the technical solution of this application embodiment, since the movable block is also embedded in the second groove of the connecting block, the connecting block can partially accommodate and constrain the movable block, reducing the risk of the movable block dislodging from the installation position of the first groove. Simultaneously, since the connecting block also connects the second slider and the first mounting plate, the overall structure can be made more compact, facilitating processing and assembly, and also improving the stability of the clamping assembly sliding along a third direction.

[0024] In some embodiments, the electrode alignment device includes a first detection component, which includes an angle sensor for detecting the angle of rotation of the support plate about the axis of the second direction.

[0025] In the technical solution of this application embodiment, since the first detection component can detect the actual angle of rotation of the support plate around the second direction axis, the control system can adjust the output of the driving force in real time according to the detection result, thereby realizing dynamic correction and closed-loop control of the electrode angle correction. In addition, after a cell winding is completed, the first detection component can also detect whether the correction angle has returned to the initial 0 degrees, which is beneficial for continuous and uninterrupted winding production.

[0026] In some embodiments, the electrode correction device includes a second detection component, which includes two sensor components spaced apart along a third direction, the sensor components being used to detect the edge position of the electrode.

[0027] In the technical solution of this application embodiment, since the second detection component is provided with two sensor components spaced apart along a third direction, the detection component and the controller can simultaneously detect the edge positions of the electrode tab side and the strip side, obtain the center position of the electrode and the deviation on both sides, and calculate the correction accordingly, thereby improving the electrode correction effect and correction accuracy.

[0028] In some embodiments, the electrode correction device includes a fourth driving component, the output of which is connected to at least one of the sensor components, and the fourth driving component is used to drive the sensor components to move along the third direction.

[0029] In the technical solution of this application embodiment, since the fourth driving component can drive at least one sensor component to move along a third direction, when producing electrode sheets of different widths, the position of the sensor component can be adjusted to adapt to electrode sheets of different widths, thereby improving the versatility of the electrode sheet correction device.

[0030] In some embodiments, the sensor assembly includes a photoelectric sensor and a sensor mounting base, the photoelectric sensor being disposed on the sensor mounting base, and the sensor mounting base being drively connected to the output end of the fourth drive assembly.

[0031] In the technical solution of this application embodiment, since the photoelectric sensor is connected to the output end of the fourth driving component through the sensor mounting base, the sensor mounting base provides a stable mounting foundation and protection for the sensor, which is conducive to the parallelism of the detection optical paths of the two photoelectric sensors, improving the accuracy and reliability of edge position detection; at the same time, it also improves the integration of the sensor component and improves the assembly and maintenance efficiency of the device.

[0032] In some embodiments, the electrode correction device includes a mounting base plate, the second detection component includes two mounting rods spaced apart along the first direction, at least one end of each mounting rod is connected to the mounting base plate, and the sensor mounting seat is sleeved on the outer periphery of the mounting rods.

[0033] In the technical solution of this application embodiment, since the sensor mounting base is sleeved on the outer periphery of the two mounting rods, the sensor has a certain anti-torsion ability and smooth movement during movement and detection, avoiding the risk of sensor drift and jitter during detection and improving the stability of detection.

[0034] In some embodiments, the output end of the fourth drive assembly is connected to the first lead screw, the fourth drive assembly is used to drive the first lead screw to rotate, the sensor mounting base is connected to the nut connecting base, and the nut connecting base is threadedly connected to the first lead screw.

[0035] In the technical solution of this application embodiment, the combination of lead screw and nut connecting seat can realize high-precision position movement, thus enabling precise adjustment of the sensor component position, improving the accuracy of sensor position adjustment, adapting to the small adjustment requirements of electrode width, and improving the accuracy of detection position; in addition, the threaded connection has strong self-locking capability, and when the fourth drive component stops driving, the sensor mounting seat can be precisely locked in the preset position, improving the stability of detection accuracy.

[0036] In some embodiments, the electrode correction device includes a fifth driving component, which drives the first roller to rotate along the third direction, wherein the length of the first roller and the length of the second roller are not less than the electrode width.

[0037] In the technical solution of this application embodiment, since the fifth driving component is used to drive the first roller to rotate, the first roller is an active driving roller and the second roller is a driven roller. When the double rollers clamp the electrode sheet, the rotation of the active roller can provide auxiliary driving force for the electrode sheet to travel. In addition, since the length of the double rollers is not less than the width of the electrode sheet, it can adapt to electrode sheets of different widths. During correction, the edge of the electrode sheet will not slip or wrinkle. When changing the electrode sheet, it is not necessary to change the roller body of the corresponding length for electrode sheets of different widths, thus improving the versatility of the device.

[0038] The beneficial effects of the embodiments disclosed herein include: This application enables the clamping assembly to achieve the degree of freedom for correction in both the electrode width direction and the rotation direction, while simultaneously correcting the composite deviation of the electrode in the third and second directions, improving correction accuracy, and ensuring that the relative position of the electrode and the separator conforms to the expected design. The electrode correction device of this application can overcome the wrinkling problem easily caused by correction in the electrode width direction; and it is more suitable for the winding production of thin electrodes, overcoming the problem of limiting the correction amplitude during the correction process in the electrode width direction due to the thinness of the electrode, thereby improving the electrode correction effect and contributing to improving the overall neatness and yield of the wound products.

[0039] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0040] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0041] Figure 1 Schematic diagrams of the electrode correction device provided for some embodiments of this application;

[0042] Figure 2 Side view of an electrode correction device provided for some embodiments of this application;

[0043] Figure 3 A schematic diagram showing the location of the first detection component provided for some embodiments of this application;

[0044] Figure 4 A schematic diagram showing the location of the second detection component provided for some embodiments of this application.

[0045] Explanation of reference numerals in the attached figures

[0046] 1. Mounting base plate; 2. First drive assembly; 3. Motor mounting base; 4. Coupling; 5. Rotating plate; 6. Bearing plate; 7A. Second slide rail; 7B. Second slider; 8. Connecting block; 9. Second groove; 10. Moving block; 11. Second nut; 12. Second lead screw; 13. Lead screw fixing seat; 14. Third drive assembly; 15. First mounting plate; 15A. First groove; 16. First roller; 17. Second roller; 18. Second drive assembly; 19. Second mounting plate; 20A. First slide rail; 20B. First slider; 21. Fifth drive assembly; 22. Cylinder mounting plate; 23. Third mounting plate; 24. Mounting rod; 25. Sensor mounting seat; 26A. Adjustable side sensor assembly; 26B. Fixed side sensor assembly; 27. Fixing seat; 28. First nut; 29. ​​Nut connecting seat; 30. Fourth drive assembly; 31. First lead screw; 32. Angle sensor; 33. Angle sensing plate. Detailed Implementation

[0047] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in this document and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0049] In the description of the embodiments of this application, the technical terms "first," "second," "third," "fourth," "fifth," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0050] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0052] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0053] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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 the embodiments of this application according to the specific circumstances.

[0054] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0055] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "parallel" and "perpendicular" are both allowed to have a certain degree of tolerance and / or error, including cases of being approximately parallel and approximately perpendicular.

[0056] The following is a detailed description of this application.

[0057] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0058] In battery manufacturing, winding equipment is used to wind electrodes. Before winding, to ensure the electrode material positions meet continuous production requirements, the electrodes need to be clamped and corrected, i.e., the electrode's material line position is adjusted by moving it along its width. In production scenarios, some electrodes are too thin. To prevent the electrodes from wrinkling during clamping, the travel distance of the clamping and correcting mechanism in the electrode width direction needs to be limited. This negatively impacts the correction effect and the consistency of the electrode edges. Therefore, improving the clamping and correcting effect of thin electrode feed is one of the industry's research and development topics.

[0059] Through research and design, the electrode clamping component, the electrode width correction component, and the electrode angle correction component can be integrated and combined, so that the integrated electrode correction device can simultaneously meet the requirements of width correction and angle correction, and the components will not conflict with each other during operation. The device adopts the design of the angle correction component to support other components, which simplifies the overall structure of the device and improves the integration of the device.

[0060] Based on this design concept, this application designs an electrode correction device, which includes a clamping assembly, a first correction assembly, and a second correction assembly. The clamping assembly includes a first roller and a second roller spaced apart along a first direction, which are used to clamp the electrode. The axes of the first roller and the second roller are parallel. The first correction assembly includes a support plate with a support surface on one side. The support plate supports at least a portion of the second correction assembly and the clamping assembly. The support plate is configured to rotate around an axis in a second direction and drive the first roller and the second roller to rotate. The second correction assembly connects the first roller and the second roller and is slidably connected to the support plate. The second correction assembly is configured to drive the first roller and the second roller to slide along a third direction. The first direction is the thickness direction of the electrode, the third direction is the width direction of the electrode, the second direction intersects the first direction, and the second direction intersects the third direction.

[0061] In the technical solution of this application embodiment, since the electrode correction device integrates the first correction component and the second correction component on the same support platform, the first correction component drives the clamping component to rotate, and the second correction component drives the clamping component to translate. This enables the clamping component to achieve correction freedom in both the electrode width direction and the rotation direction, while simultaneously correcting the composite deviation of the electrode in the third and second directions, thus improving correction accuracy. Compared to traditional single-degree-of-freedom correction, the device can overcome the wrinkling problem easily caused by correction in the electrode width direction and is more suitable for the winding production of thin electrodes such as sodium electrode sheets.

[0062] In the embodiments of this application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0063] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0064] Although not illustrated, a single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0065] In some embodiments, the electrode assembly has tabs (not shown) that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0066] In some embodiments, the electrode assembly may be a wound structure or a hybrid structure of wound and stacked.

[0067] Below, refer to Figures 1 to 4 Some embodiments of this application will be described in detail.

[0068] Figure 1 Schematic diagrams of the electrode correction device provided for some embodiments of this application; Figure 2 Side view of an electrode correction device provided for some embodiments of this application; Figure 3 A schematic diagram showing the location of the first detection component provided for some embodiments of this application; Figure 4 A schematic diagram showing the location of the second detection component provided for some embodiments of this application.

[0069] In some embodiments of this application, for ease of explanation, a first direction, a second direction, and a third direction are defined. These directions intersect each other, including perpendicular intersections. To facilitate understanding of the embodiments of this application, the embodiments shown in Figures 1 to 4 are illustrated using the example of the first direction, second direction, and third direction intersecting perpendicularly. However, those skilled in the art should understand that the embodiments of this application are not limited to the case where these three directions intersect perpendicularly. For ease of explanation, as indicated by the arrows in Figures 1 to 4, the direction of arrow X is the third direction, the direction of arrow Y is the first direction, and the direction of arrow Z is the second direction. Sometimes, the direction pointed to by arrow Z along the second direction is referred to as "above," and its opposite direction as "below."

[0070] This application provides an electrode correction device. In this embodiment, the electrode correction device includes a clamping assembly, a first correction assembly, and a second correction assembly. The clamping assembly includes a first roller 16 and a second roller 17 spaced apart along a first direction (Y) and is used to clamp the electrode. The axes of the first roller 16 and the second roller 17 are parallel. The first correction assembly includes a support plate 6 with a support surface on one side. The support plate 6 supports at least a portion of the second correction assembly and the clamping assembly. The support plate 6 is configured to rotate around an axis in a second direction (Z) and drive the first roller 16 and the second roller 17 to rotate. The second correction assembly connects the first roller 16 and the second roller 17 and is slidably connected to the support plate 6. The second correction assembly is configured to drive the first roller 16 and the second roller 17 to slide along a third direction (X). The first direction (Y) is the thickness direction of the electrode, and the third direction (X) is the width direction of the electrode. The second direction (Z) intersects the first direction (Y) and the third direction (X).

[0071] It is understood that the electrode correction device in this embodiment refers to a device or equipment for correcting the position of a continuously moving electrode (positive electrode or negative electrode).

[0072] Alternatively, the electrode alignment device can be used during the winding or sheet fabrication process.

[0073] For example, the electrode correction device can be installed upstream of the winding equipment or downstream of the electrode unwinding.

[0074] Optionally, the electrode used for correction can be either a positive or a negative electrode. The electrode can be a lithium-ion battery electrode or a sodium-ion battery electrode; this application does not limit the specific type of electrode used.

[0075] It is understood that the clamping assembly is used to clamp the electrode sheet. In this embodiment, the first roller 16 and the second roller 17 of the clamping assembly cooperate to clamp the electrode sheet.

[0076] For example, in the clamping position, the thickness direction of the electrode is the first direction (Y).

[0077] For example, during the electrode correction process of the electrode correction device, the clamping component can always be in the state of clamping the electrode. When there is a need to replace the electrode, the first roller 16 and the second roller 17 release the clamping of the electrode.

[0078] Understandably, the first correction component is used to adjust the deflection angle of the electrode sheet. The first correction component can rotate the first roller 16 and the second roller 17 to correct the shape of the electrode sheet.

[0079] It is understandable that the second correction component is used to make adjustments along the width direction of the electrode sheet. The second correction component drives the first roller 16 and the second roller 17 to move along the third direction (X) through the connecting structure to make correction adjustments in the width direction.

[0080] Understandably, the electrode passes through the gap between the first roller 16 and the second roller 17, with the first roller 16 and the second roller 17 respectively contacting the two side surfaces of the electrode.

[0081] Optionally, the first roller 16 and / or the second roller 17 are connected to a driving element, such as a motor, which drives the first roller 16 and / or the second roller 17 to rotate, causing the electrode to move under the action of friction.

[0082] Optionally, the first roller 16 and the second roller 17 can be metal rollers or rubber rollers. The two rollers can be made of the same material or different materials.

[0083] For example, the first roller 16 may be a metal roller, such as a stainless steel roller.

[0084] As another example, the second roller 17 may be a rubber roller, with the outer layer of the roller covered with an elastic material layer such as rubber or polyurethane.

[0085] Optionally, the outer surface of the metal roller may be coated, such as with chromium plating, to increase wear resistance.

[0086] Optionally, the length and thickness of the first roller 16 and the second roller 17 can be the same or different.

[0087] It is understandable that the first roller 16 and the second roller 17 are usually cylindrical in shape, with their axes being the axes of the cylinder.

[0088] It is understood that the support plate 6 is a plate with a certain rigidity and load-bearing capacity, which can serve as an installation platform for the second correction component and the clamping component. The support plate 6 is indirectly connected to the clamping component and can drive the two rollers of the clamping component to rotate around the rotation axis in the second direction (Z). In this embodiment, the material and shape of the support plate 6 are not limited.

[0089] Optionally, the second correction assembly can be indirectly connected to the first roller 16 and the second roller 17.

[0090] Optionally, the second correction component is slidably connected to the carrier plate 6 via a sliding component, such as a guide rail and slider, ball bearing, etc.

[0091] It is understandable that the electrode has two sides along the width direction, i.e., the third direction (X), with one side being the tab side edge and the other side being the strip side; or both sides being tab side edge.

[0092] Understandably, winding requires sequentially stacking and winding the electrode sheet and the separator. Considering continuous winding, the position of the incoming electrode sheet (material line position) needs to be corrected to a preset position to improve the alignment of the wound core. Therefore, this embodiment sets a first correction component and a second correction component to correct the position and torsion angle of the electrode sheet in the width direction.

[0093] In the technical solution of this application embodiment, since the electrode correction device integrates the first correction component and the second correction component on the same support platform, the first correction component drives the clamping component to rotate, and the second correction component can drive the clamping component to translate. This enables the clamping component to achieve correction degrees of freedom in the electrode width direction and rotation direction, while correcting the composite deviation of the electrode in the third direction (X) and the second direction (Z), thus improving the correction accuracy. Compared with traditional single-degree-of-freedom correction, the device can overcome the wrinkling problem that is easily caused by correction in the electrode width direction, and is more suitable for the winding production of thin electrodes such as sodium electrode sheets.

[0094] In the embodiments of this application, the first correction component includes a first drive component 2. One side of the support plate 6 has a support surface, and the other side is connected to the first drive component 2. The first drive component 2 is used to drive the support plate 6 to rotate.

[0095] Optionally, the first drive component 2 may include any one of a rotary motor, a servo motor, or a stepper motor. It drives the support plate 6 and the components supported by the support plate 6 to rotate together by outputting rotational motion.

[0096] Optionally, the first drive assembly 2 can be mounted on the rack or the mounting base 1.

[0097] For example, such as Figure 1 As shown, the first drive assembly 2 is mounted on the mounting base 1 via the motor mounting bracket 3, and the mounting base 1 is fixed to the frame.

[0098] It is understood that the bearing surface is not necessarily a flat surface; it can also be a surface with certain irregularities. At least a portion of the second correction component and at least a portion of the clamping component are disposed on the bearing surface.

[0099] For example, such as Figure 1 , Figure 2 As shown, the other side of the support plate 6 is connected to the first drive assembly 2. The two can be fixedly connected or detachably connected.

[0100] In the technical solution of this application embodiment, since the first driving component 2 is disposed on the other side of the support plate 6 and isolated from the support surface, the operation of the driving component will not interfere with the operation of the second correction component and the clamping component on the support surface. This simplifies the structural complexity, makes the device layout compact, and ensures that each component does not interfere with the others, thereby reducing the overall size of the device and improving its installation adaptability. In addition, the driving torque of the first driving component 2 can be directly and evenly transmitted to the entire support plate 6, improving the stability and accuracy of angle correction.

[0101] In the embodiments of this application, the first correction component includes a rotating plate 5, which is disposed at the output end of the first drive component 2. A groove is provided on the side of the support plate 6 near the first drive component 2, and the rotating plate 5 is embedded in the groove. The rotating plate 5 is configured to drive the support plate 6 to rotate.

[0102] It is understandable that the rotating plate 5 is an intermediate transmission component located between the output end of the first drive assembly 2 and the carrier plate 6.

[0103] For example, the rotating plate 5 is a plate-like structure with a certain thickness. In some embodiments not shown, the rotating plate 5 can be replaced by a rotating block or other structure.

[0104] It is understandable that the groove shape of the support plate 6 can be adapted to the shape of the rotating plate 5.

[0105] For example, such as Figure 2 As shown, the rotating plate 5 is embedded in the groove of the bearing plate 6.

[0106] Optionally, while being embedded and engaged, the rotating plate 5 can also be fixed to the carrier plate 6 by methods such as welding, bolting, riveting, or bonding.

[0107] The embodiments of this application do not limit the shape, material, thickness, etc. of the rotating plate 5.

[0108] Optionally, a connecting shaft can be provided at the bottom of the rotating plate 5, and then connected to the output shaft of the first drive assembly 2 via a coupling 4.

[0109] In the technical solution of this application embodiment, since the rotating plate 5 is embedded in the groove on the back of the bearing plate 6, the contact area between the two is large, which can further improve the uniformity of torque transmission and the stability of angle correction. In addition, the assembly structure is simple, reducing the assembly difficulty and improving the installation efficiency and maintenance convenience.

[0110] In the embodiments of this application, the clamping assembly includes a first mounting plate 15, a second mounting plate 19, and a second drive assembly 18. A first roller 16 is connected to the first mounting plate 15, a second roller 17 is connected to the second mounting plate 19, and the second drive assembly 18 is disposed on the first mounting plate 15. The output end of the second drive assembly 18 is connected to the second mounting plate 19. The second drive assembly 18 is configured to drive the first roller 16 and the second roller 17 to move closer or further apart from each other along a first direction (Y).

[0111] Optionally, both ends of the first roller 16 and the second roller 17 along a third direction (X) are connected to the mounting plate. This connection includes indirect connections; for example, the first roller 16 and the second roller 17 can be indirectly connected to the mounting plate by passing them through a rod. This improves stability.

[0112] Optionally, the first mounting plate 15 and the second mounting plate 19 can be made of aluminum alloy or steel.

[0113] In this embodiment, the shapes of the first mounting plate 15 and the second mounting plate 19 are not limited, and they are not limited to flat plates, as long as the shapes meet the connection requirements.

[0114] Optionally, the second drive component 18 can be a cylinder or a motor, and the motor can be used in conjunction with a lead screw, electric push rod, etc.

[0115] For example, such as Figure 1 As shown, the second drive component 18 can be a cylinder, which is connected to the first mounting plate 15 via a cylinder mounting plate 22.

[0116] It is understandable that the first roller 16 and the second roller 17 can clamp the electrode when they are close to each other, and release or reset the electrode when they are far apart.

[0117] Understandably, the second roller 17 and the second mounting plate 19 are driven by the output end of the second drive assembly 18 to move closer to or away from the location of the first roller 16.

[0118] For example, the second mounting plate 19 is indirectly connected to the output of the second drive assembly 18 via a movable connector.

[0119] For example, such as Figure 1 As shown, along the third direction (X), the second drive assembly 18 is disposed between the two second mounting plates 19.

[0120] In the technical solution of this application embodiment, the first mounting plate 15, the second mounting plate 19, and the second driving assembly 18 can work together to control the gap between the first roller 16 and the second roller 17, thereby achieving clamping or releasing actions. Furthermore, the clamping assembly is independent and its actions are not altered by changes in width or angle correction. Additionally, the two rollers can remain parallel during clamping, and the clamping force is evenly distributed along the width direction of the electrode sheet, preventing damage to the electrode sheet.

[0121] In the embodiments of this application, the clamping component includes at least one first sliding component, the first sliding component includes a first slide rail 20A and a first slider 20B, one of which is disposed on the first mounting plate 15, and the other is connected to the second mounting plate 19; the first slider 20B slides in cooperation with the first slide rail 20A, and the first slide rail 20A extends along the first direction (Y).

[0122] Understandably, the cooperation between the slider and the slide rail in the first sliding assembly can provide precise guidance for the movement of the two rollers, restrict all degrees of freedom in directions other than the first direction (Y), prevent the second mounting plate 19 from swaying or twisting, and improve the parallelism of the two rollers.

[0123] It is understandable that since the first slide rail 20A restricts the degree of freedom of the first slider 20B, when a part of the clamping assembly, such as the first mounting plate 15, is subjected to a moving thrust or rotational torque along a third direction (X), it can drive other parts of the clamping assembly, such as the second mounting plate 19, to move, thereby causing the two rollers to move or rotate synchronously.

[0124] The embodiments of this application do not limit the cross-sectional shape of the slide rail and slider, which can be circular, rectangular, triangular or other shapes.

[0125] For example, such as Figure 1 , Figure 3 As shown, the first slide rail 20A is disposed on the first mounting plate 15, and the first slider 20B is connected to the second mounting plate 19.

[0126] As an example, in some embodiments not shown, the first slide rail 20A is disposed on the second mounting plate 19, and the first slider 20B is connected to the first mounting plate 15.

[0127] For example, the clamping assembly includes two first sliding components arranged at a distance along a third direction (X).

[0128] In the technical solution of this application embodiment, since a first sliding component is provided between the first mounting plate 15 and the second mounting plate 19, it can provide precise guidance for the movement of the second mounting plate 19, allowing the second mounting plate 19 to move along a preset first direction (Y). The sliding fit reduces frictional resistance during movement, improves the parallelism of the axes of the first roller 16 and the second roller 17, and facilitates the uniform distribution of clamping force along the electrode width direction, thus improving clamping stability. Furthermore, the first slide rail 20A constrains the first slider 20B in the third direction (X). During the width correction movement, the first slider 20B can be driven by the movement of the first slide rail 20A itself, causing the two mounting plates to move synchronously without offset, achieving correction in the electrode width direction.

[0129] In the embodiments of this application, the second correction component includes a third drive component 14. The output end of the third drive component 14 is connected to the first mounting plate 15 or the second mounting plate 19. The third drive component 14 is configured to drive the first roller 16 and the second roller 17 to move along a third direction (X).

[0130] For example, such as Figure 1 As shown, the third drive assembly 14 may include a motor, the output shaft of which is indirectly connected to the first mounting plate 15.

[0131] For example, the third drive component 14 can be mounted on the carrier plate 6.

[0132] For example, such as Figure 1 As shown, the third drive assembly 14 is mounted on the support plate 6 via the lead screw fixing seat 13.

[0133] For example, the output end of the third drive assembly 14 can be connected to the second lead screw 12 via another coupling, and the second nut 11 is sleeved on the second lead screw 12. The second nut 11 is indirectly connected to the first mounting plate 15 or the second mounting plate 19.

[0134] In the technical solution of this application embodiment, since the third driving component 14 is directly connected to the clamping component, the overall translational driving of the entire clamping component is realized. In addition, during the width correction process, the electrode can be translated in a stable clamping state, avoiding the undesirable situation of the electrode wrinkling during the correction process.

[0135] In the embodiments of this application, the second correction component includes at least one second sliding component, which includes a second slide rail 7A and a second slider 7B, one of which is disposed on the support plate 6 and the other is connected to the first mounting plate 15; the second slider 7B slides in cooperation with the second slide rail 7A, and the second slide rail 7A extends along a third direction (X).

[0136] Understandably, the second sliding component can be indirectly connected to the first mounting plate 15.

[0137] For example, the second slide rail 7A of the second sliding component can be disposed on the support plate 6, and the second slider 7B is indirectly connected to the first mounting plate 15.

[0138] As an example, in some embodiments not shown, the second slider 7B may be disposed on the support plate 6, and the second slide rail 7A may be indirectly connected to the first mounting plate 15.

[0139] In this embodiment, the cross-sectional shape of the second slider 7B and the second slide rail 7A is not limited.

[0140] It is understandable that the support plate 6 is located on the lower side of the first mounting plate 15, and the position of the second sliding component is between the first mounting plate 15 and the support plate 6.

[0141] For example, the second correction component includes two second sliding components, which are arranged at intervals along a first direction (Y).

[0142] In the technical solution of this application embodiment, since the second sliding component is disposed on the support plate 6 and connected to the clamping component, the clamping component can perform the width correction action in coordination with the angle correction action without causing action interference, thereby realizing the positional correction of the electrode angle and width and improving the correction effect under complex deviation conditions. In addition, the second slide rail 7A constrains the second slider 7B. During the angle correction rotation, the second slider 7B can be driven by the rotation of the second slide rail 7A itself to drive the clamping component to rotate synchronously, thereby realizing the electrode angle correction.

[0143] In the embodiments of this application, the second correction component includes a moving block 10, which is disposed at the output end of the third drive component 14. The first mounting plate 15 has a first groove 15A, the moving block 10 is partially embedded in the first groove 15A, and the moving block 10 abuts against the groove wall of the first groove 15A along the third direction (X).

[0144] For example, the moving block 10 is indirectly connected to the third drive component 14.

[0145] For example, such as Figure 1As shown, the second nut 11 is fixedly connected to the moving block 10, and the output end of the third drive assembly 14 is connected to the moving block 10 through the second lead screw 12 and the second nut 11.

[0146] For example, such as Figure 1 , Figure 3 As shown, the first mounting plate 15 has a first groove 15A. In this embodiment, the shape and depth of the first groove 15A are not limited.

[0147] For example, such as Figure 1 , Figure 3 As shown, the top portion of the movable block 10 is embedded in the first groove 15A of the first mounting plate 15 and abuts against the groove wall of the first groove 15A along a third direction (X). The movable block 10 shown is a cuboid. Of course, in embodiments not shown, the movable block 10 can be other shapes. This embodiment does not limit the shape and size of the movable block 10.

[0148] Alternatively, the movable block 10 can also be fixed to the first mounting plate 15 by welding, bolting, bonding, or other methods.

[0149] In the technical solution of this application embodiment, since the movable block 10 is partially embedded in the first groove 15A of the first mounting plate 15 and abuts against the groove wall of the first groove 15A along the third direction (X), the driving force of the third driving component 14 can be directly transmitted to the first mounting plate 15 through the abutment surface between the movable block 10 and the groove wall, thereby driving the first mounting plate 15 and other structures of the clamping component to move along the third direction (X) for width correction. Furthermore, the connection structure is simple, reducing assembly difficulty.

[0150] In the embodiments of this application, the second correction component includes a plurality of connecting blocks 8, which are respectively connected to the second slider 7B and the first mounting plate 15. At least one connecting block 8 has a second groove 9, which communicates with the first groove 15A. The moving block 10 is partially embedded in the second groove 9.

[0151] For example, such as Figure 1 , Figure 3 As shown, the connecting block 8 is located between the first mounting plate 15 and the second slider 7B. It can be understood that the connecting block 8 is capable of supporting the first mounting plate 15.

[0152] Optionally, there are no fewer than two connecting blocks 8, so that they can jointly support the first mounting plate 15.

[0153] For example, such as Figure 1 , Figure 3 As shown, the two connecting blocks 8 are arranged along the third direction (X), and each is connected to the second slider 7B and the first mounting plate 15.

[0154] For example, such as Figure 1 , Figure 3 As shown, one of the connecting blocks 8 has a second groove 9, which is below the first groove 15A. The moving block 10 is embedded in the first groove 15A and the second groove 9.

[0155] In this embodiment, the shape and size of the second groove 9 are not limited.

[0156] In the technical solution of this application embodiment, since the movable block 10 is also embedded in the second groove 9 of the connecting block 8, the connecting block 8 can partially accommodate and constrain the movable block 10, reducing the risk of the movable block 10 dislodging from the installation position of the first groove 15A. At the same time, since the connecting block 8 also connects the second slider 7B and the first mounting plate 15, the overall structure can be made more compact, which is convenient for processing and assembly, and also improves the stability of the clamping assembly sliding along the third direction (X).

[0157] In an embodiment of this application, the electrode correction device includes a first detection component, which includes an angle sensor 32 for detecting the angle of rotation of the support plate 6 about the axis of the second direction (Z).

[0158] Understandably, the first detection component is used to measure the rotation angle of the carrier plate 6.

[0159] Optionally, the first detection component can be mounted on the carrier plate 6.

[0160] For example, the first detection component includes an angle sensor 32 and an angle sensing plate 33. Each time the angle needs to confirm its mechanical position, the angle sensing plate 33 senses the position sensor to confirm the actual angle, and then after the winding of a battery cell is completed, the correction angle returns to the initial 0 degrees.

[0161] For example, such as Figure 3 As shown, the angle sensor 32 is mounted on the mounting base plate 1. The angle sensing element 33 is mounted on the support plate 6.

[0162] Optionally, the angle sensor 32 can be a magnetoresistive sensor or a non-contact sensor such as a Hall effect sensor.

[0163] Optionally, the angle sensing sheet 33 can be an iron sheet, and its shape and size are not limited.

[0164] Optionally, the angle sensor 32 can be connected to the controller of the electrode correction device to transmit the detected signal to the controller for processing.

[0165] In the technical solution of this application embodiment, since the first detection component can detect the actual angle of rotation of the support plate 6 around the second direction (Z) axis, the control system can adjust the output of the driving force in real time according to the detection result, thereby realizing dynamic correction and closed-loop control of the electrode angle correction. In addition, after a cell winding is completed, the first detection component can also detect whether the correction angle has returned to the initial 0 degrees, which is beneficial for continuous and uninterrupted winding production.

[0166] In an embodiment of this application, the electrode correction device includes a second detection component, which includes two sensor components spaced apart along a third direction (X). The sensor components are used to detect the edge position of the electrode.

[0167] Understandably, the second detection component is used to detect the electrode and is located near the electrode and clamping component.

[0168] For example, such as Figure 4 As shown, the second detection component includes a fixed-side sensor component 26B and an adjustable-side sensor component 26A, wherein along the third direction (X), the fixed-side sensor component 26B is closer to the fifth drive component 21.

[0169] It is understood that the electrode has two edges along both sides of the third direction (X). In this embodiment, the electrode has a tab that connects to an external circuit and a strip side without a tab. Generally, the tab is an extension of the current collector that is not coated with electrode material. The tab can be a full tab (continuous) or a gap-type tab. The fixed-side sensor assembly 26B detects the position of one of the feed lines, and the adjustable-side sensor assembly 26A detects the position of the other feed line.

[0170] Alternatively, the structure of the fixed-side sensor assembly 26B can be the same as that of the adjustable-side sensor assembly 26A.

[0171] Understandably, the second detection component can use at least one of photoelectric sensors, ultrasonic sensors, CCD cameras, etc.

[0172] In the technical solution of this application embodiment, since the second detection component is provided with two sensor components spaced apart along a third direction (X), the detection component and the controller can simultaneously detect the edge positions of the electrode tab side and the strip side, obtain the center position of the electrode and the deviation on both sides, and calculate the correction accordingly, thereby improving the electrode correction effect and correction accuracy.

[0173] In the embodiments of this application, the electrode correction device includes a fourth drive component 30, the output end of which is connected to at least one sensor component, and the fourth drive component 30 is used to drive the sensor component to move along a third direction (X).

[0174] Understandably, the fourth drive component 30 is a power element used to adjust the position of the sensor component.

[0175] Optionally, the fourth drive component 30 may include either a handwheel or an adjustment motor.

[0176] Optionally, the fourth drive assembly 30 can change the position of the sensor assembly by any one of the following combinations: a motor and a lead screw, an electric push rod, or a handwheel and a lead screw.

[0177] For example, the fourth drive component 30 may be indirectly connected to the adjustment-side sensor component 26A.

[0178] In the technical solution of this application embodiment, since the fourth driving component 30 can drive at least one sensor component to move along a third direction (X), when producing electrode sheets of different widths, the position of the sensor component can be adjusted to adapt to electrode sheets of different widths, thereby improving the versatility of the electrode sheet correction device.

[0179] In the embodiments of this application, the sensor assembly includes a photoelectric sensor and a sensor mounting base 25. The photoelectric sensor is disposed on the sensor mounting base 25, and the sensor mounting base 25 is connected to the output end of the fourth drive assembly 30.

[0180] Understandably, photoelectric sensors can detect the edge position of electrodes through photoelectric signals.

[0181] Alternatively, the photoelectric sensor can be a through-beam sensor or a reflective sensor.

[0182] For example, such as Figure 4 As shown in the figure, the photoelectric sensor is a through-beam type, which has a transmitter and a receiver. The transmitter and receiver are respectively located on both sides of the electrode's traveling plane, that is, on both sides of the electrode along the first direction (Y). Through-beam type has high detection accuracy, strong anti-interference ability, is not affected by the electrode coating color, and is suitable for lithium electrode detection.

[0183] Of course, in some other embodiments not shown, the photoelectric sensor may also be reflective.

[0184] It is understandable that the sensor mounting base 25 is the mounting base for the photoelectric sensor and is also connected to the fourth drive assembly 30 via transmission.

[0185] This embodiment does not limit the shape or size of the sensor mounting base 25, as long as it can accommodate a photoelectric sensor.

[0186] In the technical solution of this application embodiment, since the photoelectric sensor is connected to the output end of the fourth drive component 30 through the sensor mounting base 25, the sensor mounting base 25 provides a stable mounting foundation and protection for the sensor, which is conducive to the parallelism of the detection optical paths of the two photoelectric sensors, improving the accuracy and reliability of edge position detection; at the same time, it also improves the integration of the sensor component and improves the assembly and maintenance efficiency of the device.

[0187] In the embodiments of this application, the electrode correction device includes a mounting base plate 1, and the second detection component includes two mounting rods 24 spaced apart along a first direction (Y). At least one end of the mounting rods 24 is connected to the mounting base plate 1, and the sensor mounting seat 25 is sleeved on the outer periphery of the mounting rods 24.

[0188] Understandably, the two mounting rods 24 are positioned on both sides of the electrode along the first direction (Y).

[0189] For example, the mounting base is fixedly connected to a frame (not shown) as the mounting reference for the entire electrode alignment device.

[0190] For example, the mounting rod 24 can be indirectly connected to the mounting base plate 1.

[0191] For example, such as Figure 4 As shown, the third mounting plate 23 is mounted on the mounting base plate 1, and two fixing seats 27 are mounted on the left and right sides of the third mounting plate 23. The two fixing seats 27 are arranged opposite each other along the third direction (X). Two mounting rods 24 are connected to the two fixing seats 27 respectively, that is, inserted between the two plate-shaped fixing seats 27. The two mounting rods 24 are parallel to each other along the first direction (Y).

[0192] Alternatively, the mounting rod 24 can be a round rod, which is easy to process and fits well with the linear bearing, or it can be a square rod to prevent the sensor mounting base 25 from rotating.

[0193] The distance between the two mounting rods 24 is not limited in the embodiments of this application.

[0194] It is understandable that the sensor mounting base 25 has two through holes, and two mounting rods 24 are inserted through the through holes, that is, the sensor mounting base 25 is sleeved on the outer periphery of the mounting rods 24.

[0195] Understandably, the sensor mounting base 25 needs to make way for the electrode position.

[0196] In the technical solution of this application embodiment, since the sensor mounting base 25 is sleeved on the outer periphery of the two mounting rods 24, the sensor has a certain anti-torsion ability and smooth movement during movement and detection, avoiding the risk of sensor drift and shaking during detection and improving the stability of detection.

[0197] In the embodiments of this application, the output end of the fourth drive assembly 30 is connected to the first lead screw 31, the fourth drive assembly 30 is used to drive the first lead screw 31 to rotate, the sensor mounting base 25 is connected to the nut connecting base 29, and the nut connecting base 29 is threadedly connected to the first lead screw 31.

[0198] For example, such as Figure 4 As shown, the fourth drive component 30 is an adjustment motor. The sensor mounting base 25 of the adjustment side sensor component 26A is connected to the nut connecting base 29. The nut connecting base 29 is connected to the first nut 28. The adjustment motor is mounted on the fixed base 27 and connected to the first lead screw 31 through other couplings. The adjustment motor drives the first lead screw 31 to rotate, and the first nut 28 moves back and forth on the first lead screw 31. The first nut 28 drives the nut connecting base 29 to move back and forth, so that when the electrode width changes, the position can be adjusted by adjusting the motor.

[0199] For example, the sensor mounting base 25 of the adjustable side sensor assembly 26A and the mounting rod 24 are connected by a linear bearing and can move relative to each other, while the position between the sensor mounting base 25 and the mounting rod 24 of the fixed side sensor assembly 26B is locked by a kimming screw.

[0200] In the technical solution of this application embodiment, the combination of lead screw and nut connecting seat 29 can achieve high-precision position movement, thus enabling precise adjustment of the sensor component position, improving the accuracy of sensor position adjustment, adapting to the need for minute adjustment of electrode width, and improving the accuracy of detection position; in addition, the threaded connection has strong self-locking capability, and when the fourth drive component 30 stops driving, the sensor mounting seat 25 can be precisely locked in the preset position, improving the stability of detection accuracy.

[0201] In the embodiments of this application, the electrode correction device includes a fifth drive component 21, which drives the first roller 16 to rotate along a third direction (X). The length of the first roller 16 and the length of the second roller 17 are not less than the width of the electrode.

[0202] For example, such as Figure 1 , Figure 2 , Figure 4 As shown, the fifth drive assembly 21 may include a roller motor for driving the first roller 16 to rotate. The fifth drive assembly 21 may be mounted on the first mounting plate 15.

[0203] For example, the length of the roller surface is greater than the maximum width of the electrode sheet, so that both sides of the electrode sheet are within the clamping range of the roller surface and there is no suspension.

[0204] Optionally, the length of the second roller 17 is shorter than that of the first roller 16. The position of the second roller 17 can be adjusted according to the center of the electrode before clamping, while the first roller 16 is longer and does not need to be moved.

[0205] In the technical solution of this application embodiment, since the fifth drive component 21 is used to drive the first roller 16 to rotate, the first roller 16 is the active drive roller and the second roller 17 is the driven roller. When the double rollers clamp the electrode sheet, the rotation of the active roller can provide auxiliary driving force for the electrode sheet to travel. In addition, since the length of the double rollers is not less than the width of the electrode sheet, it can adapt to electrode sheets of different widths. During the correction, the edge of the electrode sheet will not slip or wrinkle. When changing the electrode sheet, it is not necessary to change the roller body of the corresponding length for electrode sheets of different widths, thus improving the versatility of the device.

[0206] The specific solutions of the embodiments of this application are described below with reference to the accompanying drawings.

[0207] The correction equipment in related technologies usually only has the ability to correct electrode sheets in one degree of freedom in the electrode sheet clamping width direction. When it comes to the production of thin electrode sheets, its correction effect is limited, the final correction effect is greatly reduced, and the uniformity and yield of the products become a problem.

[0208] This design presents an electrode web correction device that can be positioned upstream of the winding equipment. The device mainly comprises a clamping assembly, a first correction assembly, a second correction assembly, a first detection assembly, and a second detection assembly. By integrating the clamping assembly, the first correction assembly, and the second correction assembly, the device achieves freedom of correction in both the electrode width and rotation directions, thereby overcoming the wrinkling problem easily caused by the width-direction correction of thin electrodes. The correction device also integrates an electrode material line detection device, i.e., the second detection assembly, which facilitates real-time coordination with the correction execution function, improving the correction effect. The second detection assembly integrates an adaptive adjustment function; when the electrode width changes, the detection position of the material line detection device can be automatically adjusted through setting or adaptive calibration.

[0209] In a specific embodiment, the clamping assembly includes a first roller 16 and a second roller 17. The first roller 16 is fixedly mounted on a first mounting plate 15, and the second roller 17 is mounted on a second mounting plate 19. The second mounting plate 19 achieves relative displacement with the first mounting plate 15 through a first sliding assembly. A second driving assembly 18 (cylinder) is mounted on a cylinder mounting plate 22, which is connected to the first mounting plate 15. The output end of the second driving assembly 18 (cylinder) is connected to a first slider 20B through a movable joint connector. The first slider 20B is fixedly connected to the second mounting plate 19 and slides in cooperation with a first slide rail 20A fixed on the first mounting plate 15. The first slide rail 20A is fixed to the first mounting plate 15. The clamping and opening of the second roller 17 and the first roller 16 along the first direction (Y) is achieved by the back-and-forth movement of the cylinder, realizing the action of clamping and releasing the electrode sheet. The first direction (Y) is usually the thickness direction of the electrode sheet. The first roller 16 can be a metal roller, and the second roller 17 can be a rubber roller. The first roller 16 is driven to rotate actively by the fifth drive assembly 21, and the second roller 17 is driven passively, driving the electrode sheet to move downstream of the device to the winding equipment.

[0210] In the second alignment assembly, the first mounting plate 15 is mounted on the connecting block 8, and the connecting block 8 is connected to the second slider 7B on the second slide rail 7A, thereby realizing relative movement between the first mounting plate 15 and the bearing plate 6; the lead screw fixing seat 13 is mounted on the bearing plate 6, and the third drive assembly 14 (alignment motor) is mounted on the lead screw fixing seat 13 and connected to the first lead screw 31 through other couplings. The alignment motor drives the first lead screw 31 to rotate, thereby driving the first nut 28 on the first lead screw 31 to move back and forth. The first nut 28 is connected to the moving block 10. The movable block 10 is fitted into the two grooves of the connecting block 8 and the first mounting plate 15. When the nut drives the movable block 10 to move, the movable block 10 can drive the connecting block 8 to move because its degree of freedom is restricted by the groove. The connecting block 8 is fixedly installed with the first mounting plate 15 and the first roller 16. When the second roller 17 and the first roller 16 clamp the electrode, the first roller 16 and the second roller 17 can be driven by the correction motor to move along the third direction (X) to realize the movement correction in the width direction of the electrode. Usually, the width direction of the electrode is the third direction (X).

[0211] In a specific embodiment, the first correction component (angle correction) is as follows: a support plate 6 is mounted on a rotating plate 5. A groove is formed on one side of the support plate 6 facing the rotating plate 5, into which the rotating plate 5 is embedded. The other side is used to support the clamping component and the second correction component. The shaft on the rotating plate 5 is connected to the first drive component 2 (angle correction motor) via a coupling 4. The rotating plate 5 and the mounting base plate 1 achieve relative rotational capability through bearings. The mounting base plate 1 is fixedly connected to the frame, its position remaining unchanged, and the type of bearing is not specifically limited. A motor mounting seat 3 is mounted on the mounting base plate 1, and the angle correction motor is mounted on the motor mounting seat 3. When the angle correction motor rotates, it drives the rotating plate 5 to rotate, further driving the support plate 6 to rotate as well. Through related connections, it drives the second roller 17 and the first roller 16 to adjust the rotation direction of the clamped electrode. Here, rotation refers to rotation around the rotation axis in the second direction (Z), which is perpendicular to the first and third directions (X). Each time the angle needs to confirm its mechanical position, the angle sensor 32 is sensed by the angle sensing plate 33 to confirm the actual angle of rotation in the second direction (Z), thereby ensuring that after the completion of winding a battery cell, the correction angle returns to the initial position, i.e., 0 degrees.

[0212] In a specific embodiment, the second detection component is used to detect the position of the electrode material line. The third mounting plate 23 is mounted on the mounting base plate 1, and two fixing seats 27 are mounted on the left and right sides of the third mounting plate 23. The two fixing seats 27 are arranged opposite each other along the third direction (X). Two mounting rods 24 are respectively connected to the two fixing seats 27, that is, inserted between the two plate-shaped fixing seats 27. The two mounting rods 24 are parallel to each other along the first direction (Y). The sensor component includes a photoelectric sensor and a sensor mounting seat 25. The sensor mounting seat 25 is respectively connected to the two mounting rods 24. The sensor mounting seat 25 has two parallel through holes and is fitted onto the two mounting rods 24. The photoelectric sensor is mounted on the sensor mounting seat 25. Because the mounting plate is connected to the mounting base plate 1, when the second roller 17 and the first roller 16 clamp the electrode sheet for correction, there is no displacement of the two sensor components. After the electrode sheet is clamped and corrected by the second roller 17 and the first roller 16, the electrode tab side and the slitting side material line can be detected by the two sensor components, thereby confirming the effect of the electrode sheet correction and feeding it back to the control system. The control system adjusts the execution action of the first drive component 2, i.e. the angle correction motor, and the third drive component 14, i.e. the correction motor, according to the position of the electrode sheet.

[0213] The two sensor assemblies include a fixed-side sensor assembly 26B and an adjustable-side sensor assembly 26A. The sensor mounting base 25 of the adjustable-side sensor assembly 26A is connected to a nut connecting seat 29; the nut connecting seat 29 is connected to a first nut 28. A fourth drive assembly 30 (i.e., an adjusting motor) is mounted on a fixed base 27 and connected to a first lead screw 31 via a coupling 4. The adjusting motor drives the first lead screw 31 to rotate, causing the first nut 28 to move back and forth on the first lead screw 31. The first nut 28 then drives the nut connecting seat 29 to move back and forth, thus allowing position adjustment via the adjusting motor when the electrode width changes. In the adjustable-side sensor assembly 26A, the sensor mounting base 25 and the mounting rod 24 are connected via a linear bearing, allowing relative movement. Similarly, the sensor mounting base 25 of the fixed-side sensor assembly 26B is connected to the mounting rod 24 via a linear bearing and secured to the mounting rod 24 with a ferrule screw to maintain a fixed detection reference. When correcting the polarity of electrodes of different widths, the fixed-side sensor assembly 26B is locked with a kimming screw, and the position of the adjustable-side sensor assembly 26A can be changed to adapt to the width of different electrodes.

[0214] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0215] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0216] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of protection claimed in this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of protection claimed.

Claims

1. An electrode correction device, characterized in that, The device includes a clamping assembly, a first correction assembly, and a second correction assembly. The clamping assembly includes a first roller and a second roller spaced apart along a first direction, used to clamp an electrode sheet. The axes of the first roller and the second roller are parallel. The first correction assembly includes a support plate with a support surface on one side. The support plate supports at least a portion of the second correction assembly and the clamping assembly. The support plate is configured to rotate about an axis in a second direction and drive the first roller and the second roller to rotate. The second correction assembly connects the first roller and the second roller and is slidably connected to the support plate. The second correction assembly is configured to drive the first roller and the second roller to slide along a third direction. The first direction is the thickness direction of the electrode sheet, the third direction is the width direction of the electrode sheet, and the second direction intersects the first direction and the third direction.

2. The electrode correction device according to claim 1, characterized in that, The first correction component includes a first drive component, and the other side of the support plate is connected to the first drive component. The first drive component is used to drive the support plate to rotate.

3. The electrode correction device according to claim 2, characterized in that, The first correction component includes a rotating plate, which is disposed at the output end of the first drive component. The support plate has a groove on the side near the first drive component, and the rotating plate is embedded in the groove. The rotating plate is configured to drive the support plate to rotate.

4. The electrode correction device according to any one of claims 1 to 3, characterized in that, The clamping assembly includes a first mounting plate, a second mounting plate, and a second driving assembly. The first roller is connected to the first mounting plate, the second roller is connected to the second mounting plate, the second driving assembly is disposed on the first mounting plate, and the output end of the second driving assembly is connected to the second mounting plate. The second driving assembly is configured to drive the first roller and the second roller to move closer or further away from each other along the first direction.

5. The electrode correction device according to claim 4, characterized in that, The clamping assembly includes at least one first sliding assembly, which includes a first slide rail and a first slider, one of which is disposed on the first mounting plate and the other is connected to the second mounting plate; the first slider slides in cooperation with the first slide rail, and the first slide rail extends along the first direction.

6. The electrode correction device according to claim 4, characterized in that, The second correction component includes a third drive component, the output end of which is connected to the first mounting plate or the second mounting plate. The third drive component is configured to drive the first roller and the second roller to move along the third direction.

7. The electrode correction device according to claim 6, characterized in that, The second correction component includes at least one second sliding component, which includes a second slide rail and a second slider. One of the two is disposed on the support plate, and the other is connected to the first mounting plate. The second slider slides in cooperation with the second slide rail, and the second slide rail extends along the third direction.

8. The electrode correction device according to claim 7, characterized in that, The second correction component includes a movable block disposed at the output end of the third drive component. The first mounting plate has a first groove, the movable block is partially embedded in the first groove, and the movable block abuts against the groove wall of the first groove along the third direction.

9. The electrode correction device according to claim 8, characterized in that, The second correction component includes multiple connecting blocks, which are respectively connected to the second slider and the first mounting plate. At least one of the connecting blocks has a second groove, which communicates with the first groove. The moving block is partially embedded in the second groove.

10. The electrode correction device according to any one of claims 1 to 3, characterized in that, The electrode correction device includes a first detection component, which includes an angle sensor for detecting the angle of rotation of the support plate around the axis of the second direction.

11. The electrode correction device according to any one of claims 1 to 3, characterized in that, The electrode correction device includes a second detection component, which includes two sensor components spaced apart along a third direction. The sensor components are used to detect the edge position of the electrode.

12. The electrode correction device according to claim 11, characterized in that, The electrode correction device includes a fourth drive component, the output of which is connected to at least one of the sensor components, and the fourth drive component is used to drive the sensor components to move along the third direction.

13. The electrode correction device according to claim 12, characterized in that, The sensor assembly includes a photoelectric sensor and a sensor mounting base. The photoelectric sensor is disposed on the sensor mounting base, and the sensor mounting base is connected to the output end of the fourth drive assembly.

14. The electrode correction device according to claim 13, characterized in that, The electrode correction device includes a mounting base plate, and the second detection component includes two mounting rods spaced apart along the first direction. At least one end of each mounting rod is connected to the mounting base plate, and the sensor mounting seat is sleeved on the outer periphery of the mounting rod.

15. The electrode correction device according to claim 13 or 14, characterized in that, The output end of the fourth drive component is connected to the first lead screw, and the fourth drive component is used to drive the first lead screw to rotate. The sensor mounting base is connected to the nut connecting base, and the nut connecting base is threadedly connected to the first lead screw.

16. The electrode correction device according to any one of claims 1 to 3, characterized in that, The electrode correction device includes a fifth drive component, which drives the first roller to rotate along the third direction. The length of the first roller and the length of the second roller are not less than the width of the electrode.

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