Pole piece processing device and pole piece processing equipment

Abstract

The utility model discloses a pole piece processing device and pole piece processing equipment. The pole piece processing device comprises a conveying roller and a smoothing mechanism. The conveying roller is used for conveying a pole piece material belt, the pole piece material belt comprises a material belt body and a pole lug, the pole lug is connected to the axial side, along the conveying roller, of the material belt body, the smoothing mechanism comprises an air blowing module, an air containing cavity is formed in the air blowing module, an air inlet hole and an air outlet hole are formed in the air blowing module, and the air containing cavity communicates with the air inlet hole and the air outlet hole; and the air blowing module is used for blowing air flow to the tabs through the air outlet holes in the direction close to the conveying rollers. According to the pole piece processing device provided by the embodiment of the utility model, the production yield of the pole piece can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and manufacturing, in particular to a pole piece processing device and pole piece processing equipment. Background Art

[0002] In related technologies, batteries are widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment, aerospace, and other fields. The battery pole group is mainly composed of pole pieces, and the production quality of pole pieces affects the performance and reliability of the battery.

[0003] In the process of battery production, when the pole piece material belt passes through the conveyor roller, the pole ears on the pole piece material belt are prone to folding and wrinkling. These bad pole ears will lead to a decrease in the pole piece production yield, have a great adverse effect on the performance of the battery, and reduce the reliability of the produced battery. Therefore, in the process of battery production, how to improve the pole piece production yield is a problem that needs to be solved in battery production technology. Utility Model Content

[0004] The utility model provides a pole piece processing device and pole piece processing equipment. The pole piece processing device can improve the production yield of the pole piece.

[0005] In the first aspect, the utility model provides a pole piece processing device, comprising: a conveying roller, the conveying roller is used to convey the pole piece, the pole piece material strip comprises a material strip body and a pole ear, the pole ear is connected to the material strip body along the axial side of the conveying roller; a smoothing mechanism, the smoothing mechanism comprises a blowing module, an air cavity is formed in the blowing module, an air inlet hole and an air outlet hole are formed on the blowing module, the air cavity connects the air inlet hole and the air outlet hole, and the blowing module is used to blow air through the air outlet toward the pole ear and in a direction close to the conveying roller.

[0006] In the above technical scheme, a smoothing mechanism is arranged near the conveying roller. In the process of the electrode material strip passing through the conveying roller, the blowing module of the smoothing mechanism can blow airflow toward the electrode ear and in the direction close to the conveying roller. The airflow can exert a force on the electrode ear in the direction close to the conveying roller to press the electrode ear. At the same time, under the support of the conveying roller, the possibility of folding and wrinkling of the electrode ear in the process of the electrode material strip passing through the roller can be reduced, thereby improving the production yield of the electrode sheet.

[0007] In some embodiments, the blowing module is located on the outer peripheral side of the conveying roller and is spaced apart from the conveying roller to define a conveying space for conveying the pole piece strip between the blowing module and the outer peripheral surface of the conveying roller, and the blowing module has a blowing surface, which extends along the circumference of the conveying roller, and the air outlet is formed on the blowing surface.

[0008] In the above technical scheme, the blowing module is arranged on the outer peripheral side of the conveying roller, and the blowing module is spaced apart from the conveying roller to define a conveying space for conveying the electrode material strip between the blowing module and the outer peripheral surface of the conveying roller. In this way, the distance between the blowing module and the electrode ear can be made closer, and it is convenient for the blowing module to blow air flow toward the electrode ear in the direction close to the conveying roller, so as to better reduce the possibility of folding and wrinkling of the electrode ear during the process of the electrode material strip passing the roller; and, by extending the blowing surface of the blowing module along the circumference of the conveying roller, the length of the blowing surface can be made longer, thereby increasing the length range of the airflow blown by the blowing surface toward the electrode ear, which can increase the effective length and effect of the airflow on the electrode ear, better reduce the possibility of folding and wrinkling of the electrode ear during the process of the electrode material strip passing the roller, and improve the production yield of the electrode sheet.

[0009] In some embodiments, the blowing surface is located at an end of the blowing module close to the conveying roller.

[0010] In the above technical solution, by setting the blowing surface at one end of the blowing module close to the conveying roller, the distance between the blowing surface and the pole ear can be made closer, the loss generated in the process of the airflow reaching the pole ear can be reduced, and the airflow blown out by the blowing surface can exert a greater force on the pole ear, thereby better reducing the possibility of folding and wrinkling of the pole ear in the process of the pole sheet material passing through the roller, thereby improving the production yield of the pole sheet.

[0011] In some embodiments, the blowing surface is located on an axial side of the blowing module along the conveying roller.

[0012] In the above technical scheme, by setting the blowing surface on the axial side of the blowing module along the conveying roller, compared with setting the blowing surface on the side of the blowing module facing the conveying roller, it can be avoided that the airflow is blown vertically onto the pole ear and causes uneven force on the pole ear, so that the airflow blown out by the blowing surface can be blown obliquely to the pole ear, which can increase the range of action of the airflow, so that the airflow blown out by the blowing surface can act on the pole ear more evenly, thereby better reducing the possibility of folding and wrinkling of the pole ear during the process of the pole sheet material passing the roller, thereby improving the production yield of the pole sheet.

[0013] In some embodiments, along the radial direction of the conveying roller and in a direction close to the central axis of the conveying roller, the blowing surface extends obliquely toward a direction close to the middle of the blowing module.

[0014] In the above technical scheme, on the basis of setting the blowing surface on the axial side of the blowing module along the conveying roller, the blowing surface is set to extend obliquely in the direction toward the center axis of the conveying roller and toward the middle of the blowing module, so that the airflow blown out by the blowing surface can be blown obliquely toward the pole ear, which can increase the range of action of the airflow, so that the airflow blown out by the blowing surface can act on the pole ear more evenly, thereby better reducing the possibility of folding and wrinkling of the pole ear in the process of the pole sheet material passing the roller, thereby improving the production yield of the pole sheet.

[0015] In some embodiments, there are a plurality of the air outlet holes, and the plurality of the air outlet holes are arranged at intervals along the circumference of the conveying roller.

[0016] In the above technical solution, by setting the air outlet holes to be multiple and arranged at intervals along the circumference of the conveying roller, the blowing range and blowing length of the blowing surface in the circumferential direction of the conveying roller can be increased, so that the airflow blown out by the blowing surface can be blown to the pole ear more evenly, so that the pole ear can be subjected to a more uniform airflow force along the conveying direction of the conveying roller, and the airflow blown out by the multiple air outlet holes on the blowing surface can act on multiple pole ears at the same time, thereby improving the range and effect of the smoothing mechanism.

[0017] In some embodiments, there are a plurality of air inlet holes, and the plurality of air inlet holes are arranged at intervals along the circumference of the conveying roller.

[0018] In the above technical solution, by setting the air inlet holes to be multiple and arranged at intervals along the circumference of the conveying roller, the air intake efficiency of the blowing module can be increased, and the air intake of the blowing module can be made more uniform along the circumferential direction of the conveying roller, which is conducive to more uniform air outlet from the blowing surface along the circumferential direction of the conveying roller.

[0019] In some embodiments, the air inlet hole is located on a side of the blowing module away from the conveying roller; or, the air inlet hole is located on an axial side of the blowing module along the conveying roller.

[0020] In the above technical solution, by arranging the air inlet hole on the side of the blowing module away from the conveying roller or arranging the air inlet hole on the axial side of the blowing module along the conveying roller, it is convenient to connect the air inlet hole of the blowing module with devices such as an air compressor.

[0021] In some embodiments, there are multiple air outlet holes, which are arranged at intervals along the circumference of the conveying roller. In the circumferential direction of the conveying roller, the spacing between adjacent air outlet holes is d, the width of the pole ear is W, and d / W≤3 / 4.

[0022] In the above technical scheme, by setting the air outlet holes to be arranged at intervals along the circumference of the conveying roller, the blowing range and blowing length of the blowing surface in the circumferential direction of the conveying roller can be increased, so that the airflow blown out from the blowing surface can be blown to the pole ear more evenly, so that the pole ear can be subjected to a more uniform airflow force along the conveying direction of the conveying roller, and the airflow blown out from the multiple air outlet holes on the blowing surface can act on multiple pole ears at the same time, thereby improving the action range and effect of the smoothing mechanism; at the same time, by limiting the relationship between the spacing between adjacent air outlet holes and the width of the pole ear, the airflow blown out from multiple air outlet holes can act on the same pole ear at the same time, so that the pole ear is subjected to a more uniform airflow action in the width direction, thereby better reducing the possibility of folding and wrinkling of the pole ear during the process of the pole sheet material passing the roller, thereby improving the production yield of the pole sheet.

[0023] In some embodiments, the blowing surface includes a first blowing section and a second blowing section, the air outlet holes are formed on the first blowing section and the second blowing section, the first blowing section and the second blowing section are arranged sequentially along the rotation direction of the conveying roller, and in the circumferential direction of the conveying roller, the first blowing section and the second blowing section are respectively located on both sides of the material feeding roller position.

[0024] In the above technical scheme, by setting the blowing surface to include a first blowing section and a second blowing section and making the first blowing section and the second blowing section respectively located on both sides of the position where the material belt enters the roller, in the process of the electrode material belt passing the roller, the pole ear can be blown and supported by the first blowing section before entering the roller, thereby reducing the possibility of folding and wrinkling of the pole ear before entering the roller. After the pole ear enters the roller, the pole ear can be blown and supported by the second blowing section, thereby reducing the possibility of folding and wrinkling of the pole ear before entering the roller. In this way, the airflow of the blowing surface is blown to the pole ear before and after the pole ear enters the roller, thereby better reducing the possibility of folding and wrinkling of the pole ear in the process of the electrode material belt passing the roller, thereby further improving the production yield of the pole sheet.

[0025] In some embodiments, among all the air outlet holes located in the first blowing section, the air outlet hole farthest from the material belt entering roller position is the first air outlet hole, and in the circumferential direction of the conveying roller, the distance between the first air outlet hole and the material belt entering roller position is a, 5mm≤a≤30mm.

[0026] In the above technical solution, by setting the distance between the air outlet farthest from the material bringing-in roller position in the first blowing section and the material bringing-in roller position to 5mm to 30mm, the effective length of the first blowing section can be made not less than 5mm, so that the first blowing section can have an effective blowing and supporting effect before the pole ear enters the roller, and the effective length of the first blowing section is made not more than 30mm, so that the length of the first blowing section can be moderate, avoiding waste caused by excessive length of the first blowing section, and reducing the space occupied by the first blowing section.

[0027] In some embodiments, in the circumferential direction of the conveying roller, the extension trajectory of the first blowing section is a straight line, and the extension trajectory of the second blowing section is an arc.

[0028] In the above technical scheme, the extension trajectory of the first blowing section in the circumferential direction of the conveying roller is set as a straight line, so that the extension trajectory of the first blowing section can match the extension trajectory of the corresponding pole piece material strip, which can avoid the influence of the first blowing section on the conveying of the pole piece material strip, and can make the distance between the first blowing section and the pole piece material strip more uniform, so that the airflow blown to the pole ear by the first blowing section is more evenly distributed in the length direction of the conveying roller, so that the first blowing section has a better blowing effect before the pole ear enters the roller; the extension trajectory of the second blowing section in the circumferential direction of the conveying roller is set as an arc, so that the extension trajectory of the second blowing section can match the extension trajectory of the corresponding pole piece material strip, which can avoid the influence of the second blowing section on the conveying of the pole piece material strip, and can make the distance between the second blowing section and the pole piece material strip more uniform, so that the airflow blown to the pole ear by the second blowing section is more evenly distributed in the length direction of the conveying roller, so that the second blowing section has a better blowing effect after the pole ear enters the roller.

[0029] In some embodiments, an extension track of the second blowing section is arranged concentrically with the conveying roller.

[0030] In the above technical scheme, on the basis of setting the extension trajectory of the second blowing section in the circumferential direction of the conveying roller as an arc, the extension trajectory of the second blowing section is set concentrically with the conveying roller, so that the extension trajectory of the second blowing section can be better matched with the corresponding pole piece material strip, and the influence of the second blowing section on the conveying of the pole piece material strip can be better avoided, and the distance between the second blowing section and the pole piece material strip can be made more uniform, so that the airflow blown to the pole ear by the second blowing section is more evenly distributed in the length direction of the conveying roller, so that the second blowing section can have a better blowing effect on the pole ear after entering the roller.

[0031] In some embodiments, the central angle corresponding to the extension trajectory of the second blowing section is β, and 40°≤β≤80°.

[0032] In the above technical solution, during the process of the pole piece strip passing the roller, the center angle of the pole piece strip wrapped around the outer peripheral side of the conveying roller is generally less than 90°. By setting the center angle corresponding to the extension trajectory of the second blowing section at 40° to 80°, the second blowing section can have a larger blowing length and blowing range, so that the pole ear after entering the roller can be subjected to airflow over a larger range and for a longer time, and the second blowing section can act on multiple pole ears after entering the roller at the same time, so as to improve the blowing effect of the second blowing section on the pole ear after entering the roller. In addition, by making the center angle corresponding to the extension trajectory of the second blowing section not greater than 80°, while achieving the improvement of the second blowing section having a larger blowing length and blowing range to improve the blowing effect of the second blowing section on the pole ear after entering the roller, it can also avoid the influence on the transmission of the pole piece strip caused by the excessive center angle of the second blowing section, for example, it can avoid the problem that the second blowing section may interfere with the pole piece strip.

[0033] In some embodiments, the material strip body includes an arc segment wrapped around the outer peripheral side of the conveying roller, the arc segment is concentrically arranged with the conveying roller, and the central angle corresponding to the arc segment is α, the second blowing segment is located on the outer peripheral side of the arc segment, and the central angle corresponding to the extended trajectory of the second blowing segment is β, 2 / 3α≤β≤α.

[0034] In the above technical scheme, by making the second blowing section correspond to the arc section of the pole piece material strip, so that the second blowing section matches the pole piece material strip of the arc section, the influence of the second blowing section on the transmission of the pole piece material strip can be avoided, and the distance between the second blowing section and the pole piece material strip can be made more uniform, so that the airflow blown to the pole ear by the second blowing section is more evenly distributed in the length direction of the conveying roller, so that the second blowing section can have a better blowing effect on the pole ear after entering the roller; and, by setting the ratio of the central angle of the second blowing section to the central angle of the arc section of the pole piece material strip at 2 / 3 to 1, the second blowing section can have a larger blowing length and blowing range, so that the pole ear after entering the roller can be subjected to the airflow action in a larger range and for a longer time, and the second blowing section can act on multiple pole ears after entering the roller at the same time, so as to improve the blowing effect of the second blowing section on the pole ear after entering the roller. Furthermore, by ensuring that the ratio of the central angle of the second blowing section to the central angle of the arc section of the pole piece material strip is not greater than 1, the second blowing section can have a larger blowing length and blowing range to improve the blowing effect of the second blowing section on the pole ear after entering the roller, while also avoiding the influence of the central angle of the second blowing section being too large on the transmission of the pole piece material strip, for example, avoiding the problem that the second blowing section may interfere with the pole piece material strip.

[0035] In some embodiments, a guide surface is formed at one end of the blowing module close to the material strip entering the roller, and the guide surface faces the conveying space. In the conveying direction of the pole piece material strip, the distance between the guide surface and the outer peripheral surface of the conveying roller gradually increases.

[0036] In the above technical solution, a guide surface is formed at one end of the blowing module close to the position of the material belt entering the roller, and the distance between the guide surface and the outer peripheral surface of the conveying roller is gradually increased in the conveying direction of the pole sheet material belt. The guide surface can be used to guide the pole sheet material into the roller, thereby reducing problems such as wrinkles that occur during the process of bringing the pole sheet material into the roller.

[0037] In some embodiments, the guide surface is formed as an arc-shaped surface.

[0038] In the above technical solution, by setting the guide surface as an arc-shaped surface, the possibility of the pole piece strip being scratched by the blowing module when entering the roller can be reduced.

[0039] In some embodiments, the cross-section of the air outlet is circular.

[0040] In the above technical solution, by setting the cross-section of the air outlet to a circular shape, the airflow blown out of the air outlet can form a relatively stable cylindrical wind column, which is not easy to diverge. This can improve the effect of the airflow blown out of the air outlet on the pole ear and enhance the blowing effect of the airflow blown out of the air outlet on the pole ear.

[0041] In some embodiments, the diameter of the air outlet is D, and D≤1 mm.

[0042] In the above technical solution, on the basis of setting the cross-section of the air outlet to be circular, the aperture of the air outlet is made not greater than 1 mm, so that the airflow blown out of the air outlet forms a relatively stable cylindrical wind column, which is not easy to disperse. At the same time, the flow area of ​​the air outlet can be made smaller, thereby reducing the consumption of compressed air and the cost of use. In addition, the force on the pole ear under the action of the blown air flow is stronger, which can improve the blowing effect of the airflow blown out of the air outlet on the pole ear.

[0043] In some embodiments, a cross-sectional area of ​​a single air outlet hole is smaller than a cross-sectional area of ​​a single air inlet hole.

[0044] In the above technical solution, by making the cross-sectional area of ​​a single air outlet hole smaller than the cross-sectional area of ​​a single air inlet hole, the flow area of ​​the air outlet hole can be made smaller, thereby reducing the consumption of compressed air and the cost of use. The air outlet pressure of the air outlet hole can be made larger, so that the airflow blown out of the air outlet hole can have a better blowing effect on the pole ear.

[0045] In some embodiments, the blowing module includes a module body and a partition plate, the module body having the air containing cavity, the air containing cavity being provided with a partition plate to separate the air containing cavity into a first air chamber and a second air chamber, the air inlet hole being provided on the wall of the first air chamber, the air outlet hole being provided on the wall of the second air chamber, and a connecting hole being provided on the partition plate, the connecting hole being used to connect the first air chamber and the second air chamber.

[0046] In the above technical solution, by providing a module body and a partition plate in the blowing module, the partition plate can divide the air cavity in the module body into a first air chamber and a second air chamber, and the airflow can enter the first air chamber from the air inlet hole. After entering the first air chamber, the airflow enters the second air chamber through the connecting hole on the partition plate, and the airflow entering the second air chamber is blown out through the air outlet. The blowing module adopts a double air chamber design, and the airflow is blown out from the air outlet after being buffered by the two air chambers. This can make the wind speed at the air outlet more uniform, thereby improving the blowing effect of the blowing module on the pole ear.

[0047] In some embodiments, there are a plurality of the communicating holes, and the plurality of communicating holes are arranged at intervals along the circumference of the conveying roller.

[0048] In the above technical solution, by setting a plurality of connecting holes arranged at intervals along the circumference of the conveying roller, the air flow in the first air chamber can flow into the second air chamber through the plurality of connecting holes, so that the air flow in the second air chamber can be more uniform in the circumferential direction of the conveying roller, so that the air flow blown out by the blowing module in the circumferential direction of the conveying roller can be more uniform, thereby improving the blowing effect of the blowing module on the pole ear.

[0049] In some embodiments, the first air chamber and the second air chamber are arranged along the axial direction or radial direction of the conveying roller.

[0050] In the above technical solution, by arranging the first air chamber and the second air chamber along the axial direction or radial direction of the conveying roller, the two air chambers of the blowing module can be arranged flexibly, and the arrangement of the two air chambers is also convenient.

[0051] In some embodiments, the module body includes a first shell and a second shell that are detachably connected, the partition plate and the first shell together define the first air chamber, the partition plate and the second shell together define the second air chamber, the air inlet is provided in the first shell, and the air outlet is provided in the second shell.

[0052] In the above technical solution, by configuring the module body to include a first shell and a second shell that are detachably connected, the module body can be easily disassembled and assembled, for example, the air chamber in the module body can be easily maintained and cleaned.

[0053] In the second aspect, the utility model provides a pole piece processing equipment, including: a pole piece cutting device, which is used to cut the pole ear on the pole piece material strip; according to the pole piece processing device of the above-mentioned first aspect of the utility model, in the processing direction of the pole piece, the pole piece processing device is located on the downstream side of the pole piece cutting device.

[0054] In the above technical scheme, by setting the above-mentioned pole piece processing device, after the pole piece material strip is cut by the pole piece cutting device, during the process of being conveyed through the conveying roller of the pole piece processing device, the smoothing mechanism of the pole piece processing device can blow air flow toward the pole ear and in the direction close to the conveying roller, thereby reducing the possibility of folding and wrinkling of the pole ear during the process of the pole piece material strip passing the roller, thereby improving the production yield of the pole piece.

[0055] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0057] Figure 1 It is a schematic diagram of the cooperation between the pole piece processing device and the pole piece material strip according to some embodiments of the utility model;

[0058] Figure 2 yes Figure 1 A schematic diagram of the cooperation between the pole piece processing device and the pole piece material strip at another angle;

[0059] Figure 3 yes Figure 1 A schematic diagram of the cooperation between the pole piece processing device and the pole piece material strip at another angle;

[0060] Figure 4 is a three-dimensional schematic diagram of an air blowing module of a pole piece processing device according to some embodiments of the utility model;

[0061] Figure 5 yes Figure 4 A side view of the blowing module in FIG.

[0062] Figure 6 yes Figure 4 A top view of the blowing module in FIG.

[0063] Figure 7 is along Figure 6 Cross-section of the middle CC;

[0064] Figure 8 yes Figure 4 Exploded diagram of the air blowing module in;

[0065] Fig. 9 It is a three-dimensional schematic diagram of an air blowing module of a pole piece processing device according to other embodiments of the utility model;

[0066] Fig.10 yes Fig. 9 Exploded view of the air blowing module in Figure 1.

[0067] Reference numerals:

[0068] 100. Pole piece processing device;

[0069] 10. Conveyor roller;

[0070] 20. Appeasement institutions;

[0071] 30. Blowing module; 31. Module body; 311. First shell; 312. Second shell; 32. Partition plate; 321. Communication hole; 33. Air chamber; 331. First air chamber; 332. Second air chamber;

[0072] 34. guide surface; 35. air inlet; 36. air outlet; 361. first air outlet;

[0073] 37, blowing surface; 371, first blowing section; 372, second blowing section;

[0074] 38. Teleportation space;

[0075] 391, first connection hole; 392, second connection hole; 393, third connection hole; 40, fastener;

[0076] 200, pole piece strip; 50, strip body; 51, arc segment; 52, straight segment; 60, pole ear;

[0077] S, the position of the material entering the roller; f, the rotation direction of the conveyor roller; e1, the width direction; e2, the length direction. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0079] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those generally understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention in the application are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0080] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0081] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "attachment" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] The term "and / or" in the present invention is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.

[0083] In the embodiments of the present invention, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present invention shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation on the present invention.

[0084] The term “plurality” used in the present invention refers to two or more (including two).

[0085] In related technologies, batteries are widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment, aerospace, and other fields. The battery pole group is mainly composed of pole pieces, and the production quality of pole pieces affects the performance and reliability of the battery.

[0086] In the process of battery production, when the pole piece material belt passes through the conveyor roller, the pole ears on the pole piece material belt are prone to folding and wrinkling. These bad pole ears will lead to a decrease in the pole piece production yield, have a great adverse effect on the performance of the battery, and reduce the reliability of the produced battery. Therefore, in the process of battery production, how to improve the pole piece production yield is a problem that needs to be solved in battery production technology.

[0087] Based on this, the applicant proposed a pole piece processing device, comprising: a conveying roller, the conveying roller is used to convey the pole piece material strip, the pole piece material strip includes a material strip body and a pole ear, the pole ear is connected to the axial side of the material strip body along the conveying roller; a smoothing mechanism, the smoothing mechanism includes a blowing module, an air cavity is formed in the blowing module, an air inlet hole and an air outlet hole are formed on the blowing module, the air cavity connects the air inlet hole and the air outlet hole, and the blowing module is used to blow air through the air outlet toward the pole ear and in a direction close to the conveying roller.

[0088] The above-mentioned electrode processing device is equipped with a smoothing mechanism near the conveying roller. During the process of the electrode material strip passing through the conveying roller, the blowing module of the smoothing mechanism can blow airflow toward the electrode ear and in the direction close to the conveying roller. The airflow can exert a force on the electrode ear in the direction close to the conveying roller to press the electrode ear. At the same time, under the support of the conveying roller, the possibility of folding and wrinkling of the electrode ear during the process of the electrode material strip passing through the roller can be reduced, thereby improving the production yield of the electrode sheet.

[0089] The following describes a pole piece processing device 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0090] Reference Figure 1-Figure 3 In the first aspect, the utility model provides a pole piece processing device 100, comprising: a conveying roller 10 and a smoothing mechanism 20, the conveying roller 10 is used to convey the pole piece strip 200, the pole piece strip 200 comprises a strip body 50 and a pole ear 60, the pole ear 60 is connected to the strip body 50 along the axial side of the conveying roller 10, the smoothing mechanism 20 comprises a blowing module 30, an air cavity 33 is formed in the blowing module 30, an air inlet hole 35 and an air outlet hole 36 are formed on the blowing module 30, the air cavity 33 connects the air inlet hole 35 and the air outlet hole 36, the blowing module 30 is used to blow air through the air outlet hole 36 toward the pole ear 60 and in a direction close to the conveying roller 10.

[0091] The cross section of the conveyor roller 10 may be circular, and the conveyor roller 10 may rotate around its central axis. The pole piece strip 200 may be conveyed by the rotation of the conveyor roller 10, and the pole piece strip 200 may be conveyed to a subsequent work station. For example, the rotation direction of the conveyor roller 10 may refer to Figure 3 The direction of rotation f.

[0092] The direction in which the conveyor roller 10 conveys the pole piece strip 200 may be the length direction of the strip body 50, and the direction perpendicular to the length direction of the strip body 50 may be the width direction of the strip body 50, and the width direction of the strip body 50 is consistent with the axial direction of the conveyor roller 10. The maximum width of the pole piece is less than the axial length of the conveyor roller 10, so that when the conveyor roller 10 conveys the pole piece strip 200, the pole piece strip 200 can be supported on the conveyor roller 10 along its width direction. The pole tab 60 can be connected to one side of the strip body 50 in the width direction, or the pole tab 60 can be connected to both sides of the strip body 50 in the width direction.

[0093] For example, the width direction of the strip body 50 can refer to Figure 1 and Figure 2 The length direction of the strip body 50 can refer to the e1 direction in FIG. Figure 1 and Figure 2 The e2 direction in .

[0094] The smoothing mechanism 20 may also include an air compressor connected to the air inlet 35 of the blowing module 30 to deliver airflow to the blowing module 30. Of course, the airflow of the blowing module 30 is not limited to coming from the air compressor, but may also come from other mechanisms that have the function of compressing and delivering airflow.

[0095] When the electrode processing device 100 is working, the electrode material strip 200 is conveyed by the conveying roller 10. During the process of the electrode material strip 200 passing the roller, the air flow enters the air cavity 33 from the air inlet 35, and then blows out from the air outlet 36 and blows toward the electrode ear 60 in the direction close to the conveying roller 10.

[0096] In the above technical scheme, a smoothing mechanism 20 is arranged near the conveying roller 10. In the process of the pole piece strip 200 passing through the conveying roller 10, the blowing module 30 of the smoothing mechanism 20 can blow airflow toward the pole ear 60 and in the direction close to the conveying roller 10. The airflow can apply a force on the pole ear 60 in the direction close to the conveying roller 10 to press the pole ear 60. At the same time, under the support of the conveying roller 10, the possibility of the pole ear 60 being folded or wrinkled in the process of the pole piece strip 200 passing through the roller can be reduced, thereby improving the production yield of the pole piece strip 200.

[0097] In some embodiments, reference Figure 1-Figure 3The blowing module 30 is located on the outer peripheral side of the conveying roller 10 and the blowing module 30 is spaced apart from the conveying roller 10 to define a conveying space 38 for conveying the pole piece strip 200 between the blowing module 30 and the outer peripheral surface of the conveying roller 10. The blowing module 30 has a blowing surface 37, which extends along the circumference of the conveying roller 10, and has air outlet holes 36 formed on the blowing surface 37.

[0098] Part of the outer surface of the blowing module 30 constitutes a blowing surface 37. When the pole ear 60 is connected to one side of the material strip body 50 in the width direction, the blowing surface 37 can be set on the side of the blowing module 30 close to the pole ear 60; when the pole ear 60 is connected to both sides of the material strip body 50 in the width direction, there can be two blowing surfaces 37, and the two blowing surfaces 37 are respectively located on both sides of the blowing module 30 along the axial direction of the conveying roller 10, and the two blowing surfaces 37 correspond to the pole ears 60 on both sides of the material strip body 50 in the width direction.

[0099] The blowing surface 37 extends along the circumferential direction of the conveying roller 10 . For example, at least a portion of the blowing surface 37 in the circumferential direction of the conveying roller 10 may extend in an arc shape.

[0100] For example, the blowing module 30 can extend along the circumference of the conveying roller 10, so that the air cavity 33 in the blowing module 30 extends along the circumference of the conveying roller 10, so that the volume of the air cavity 33 is larger, and the air cavity 33 can have an intersecting extension length in the circumferential direction of the conveying roller 10. For example, the blowing surface 37 can extend from one circumferential side of the blowing module 30 to the other circumferential side of the blowing module 30. In this way, the airflow blown out by the blowing module 30 can have a larger effective range and effective length.

[0101] In which, when the blowing module 30 extends along the circumference of the conveying roller 10, a conveying space 38 for conveying the pole sheet material strip 200 defined between the blowing module 30 and the outer peripheral surface of the conveying roller 10 also extends along the circumference of the conveying roller 10, and at least a portion of the conveying space 38 in the circumferential direction of the conveying roller 10 can extend in an arc shape.

[0102] In the above technical scheme, the blowing module 30 is arranged on the outer peripheral side of the conveying roller 10, and the blowing module 30 is spaced apart from the conveying roller 10, so as to define a conveying space 38 for conveying the pole piece strip 200 between the blowing module 30 and the outer peripheral surface of the conveying roller 10. In this way, the distance between the blowing module 30 and the pole ear 60 can be closer, and it is convenient for the blowing module 30 to blow air toward the pole ear 60 in the direction close to the conveying roller 10, so as to better reduce the possibility of folding and wrinkling of the pole ear 60 during the process of the pole piece strip 200 passing the roller; and, by extending the blowing surface 37 of the blowing module 30 along the circumference of the conveying roller 10, the length of the blowing surface 37 can be longer, thereby increasing the length range of the airflow blown by the blowing surface 37 toward the pole ear 60, which can increase the length and effect of the airflow on the pole ear 60, better reduce the possibility of folding and wrinkling of the pole ear 60 during the process of the pole piece strip 200 passing the roller, and improve the production yield of the pole piece.

[0103] In some embodiments, reference Figure 1-Figure 3 , the blowing module 30 is located on the upper side of the conveying roller 10 .

[0104] In the above technical solution, the blowing module 30 is located on the upper side of the conveying roller 10, and accordingly, the pole piece strip 200 is fed into the roller from the top of the conveying roller 10, thereby facilitating the feeding operation of the pole piece strip 200 and making the blowing module 30 close to the position of the pole piece strip 200 on the conveying roller 10.

[0105] In some embodiments, reference Figure 1-Figure 3 The blowing surface 37 is located at one end of the blowing module 30 close to the conveying roller 10 .

[0106] In the above technical solution, by setting the blowing surface 37 at one end of the blowing module 30 close to the conveying roller 10, the distance between the blowing surface 37 and the pole ear 60 can be made closer, the loss generated in the process of the airflow reaching the pole ear 60 can be reduced, and the airflow blown out by the blowing surface 37 can exert a greater force on the pole ear 60, thereby better reducing the possibility of folding and wrinkling of the pole ear 60 during the process of the pole sheet material strip 200 passing the roller, thereby improving the production yield of the pole sheet.

[0107] In some embodiments, reference Figure 1-Figure 3 The blowing surface 37 is located on the axial side of the blowing module 30 along the conveying roller 10 .

[0108] For example, the blowing surface 37 may be located on one side of the blowing module 30 along the axial direction of the conveying roller 10 , or the blowing surface 37 may be located on both sides of the blowing module 30 along the axial direction of the conveying roller 10 .

[0109] In the above technical scheme, by setting the blowing surface 37 on the axial side of the blowing module 30 along the conveying roller 10, compared with setting the blowing surface 37 on the side of the blowing module 30 facing the conveying roller 10, it can be avoided that the airflow is blown vertically onto the pole ear 60 and causes uneven force on the pole ear 60, so that the airflow blown out by the blowing surface 37 can be blown obliquely to the pole ear 60, which can increase the range of action of the airflow, so that the airflow blown out by the blowing surface 37 can act on the pole ear 60 more evenly, thereby better reducing the possibility of folding and wrinkling of the pole ear 60 during the process of the pole sheet material strip 200 passing the roller, thereby improving the production yield of the pole sheet.

[0110] In some embodiments, reference Figure 1-Figure 4 Along the radial direction of the conveying roller 10 and in the direction close to the central axis of the conveying roller 10 , the blowing surface 37 extends obliquely toward the direction close to the middle of the blowing module 30 .

[0111] In the above technical scheme, on the basis of setting the blowing surface 37 on the axial side of the blowing module 30 along the conveying roller 10, the blowing surface 37 is set to extend obliquely in the direction toward the center axis of the conveying roller 10 toward the middle of the blowing module 30, so that the airflow blown out by the blowing surface 37 can be blown obliquely toward the pole ear 60, which can increase the range of action of the airflow, so that the airflow blown out by the blowing surface 37 can act on the pole ear 60 more evenly, thereby better reducing the possibility of folding and wrinkling of the pole ear 60 during the process of the pole sheet material strip 200 passing the roller, thereby improving the production yield of the pole sheet.

[0112] In some embodiments, reference Figure 1-Figure 4 There are multiple air outlet holes 36 , and the multiple air outlet holes 36 are arranged at intervals along the circumference of the conveying roller 10 .

[0113] For example, a plurality of air outlet holes 36 may be evenly spaced and arranged along the circumference of the conveying roller 10 on the air blowing surface 37 , so that the intervals between adjacent air outlet holes 36 may be the same or substantially the same.

[0114] In the above technical solution, by setting the air outlet holes 36 to be a plurality of air outlet holes 36 arranged at intervals along the circumference of the conveying roller 10, the blowing range and blowing length of the blowing surface 37 in the circumferential direction of the conveying roller 10 can be increased, so that the airflow blown out by the blowing surface 37 is blown to the pole ear 60 more evenly, so that the pole ear 60 can be subjected to a more uniform airflow force along the conveying direction of the conveying roller 10, and the airflow blown out by the multiple air outlet holes 36 on the blowing surface 37 can act on multiple pole ears 60 at the same time, thereby improving the range and effect of the smoothing mechanism 20.

[0115] In some embodiments, reference Figure 1-Figure 4 There are multiple air inlet holes 35, and the multiple air inlet holes 35 are arranged at intervals along the circumference of the conveying roller 10.

[0116] The cross section of the air inlet 35 may be circular. The number of the air inlet 35 may be less than the number of the air outlet 36 , and the spacing between adjacent air inlet 35 may be greater than the spacing between adjacent air outlet 36 .

[0117] In the above technical solution, by setting the air inlet holes 35 to be multiple and arranged at intervals along the circumference of the conveying roller 10, the air intake efficiency of the blowing module 30 can be increased, and the air intake of the blowing module 30 can be more uniform along the circumferential direction of the conveying roller 10, which is conducive to more uniform air outlet of the blowing surface 37 along the circumferential direction of the conveying roller 10.

[0118] In some embodiments, reference Figure 1-Figure 4 , the air inlet 35 is located on the side of the blowing module 30 away from the conveying roller 10; or, referring to Fig. 9 and Fig.10 The air inlet hole 35 is located on the axial side of the air blowing module 30 along the conveying roller 10 .

[0119] In the above technical solution, by setting the air inlet hole 35 on the side of the blowing module 30 away from the conveying roller 10 or setting the air inlet hole 35 on the axial side of the blowing module 30 along the conveying roller 10, it is convenient to connect the air inlet hole 35 of the blowing module 30 with devices such as an air compressor.

[0120] In some embodiments, reference Figure 3-Figure 5 There are multiple air outlet holes 36, which are arranged at intervals along the circumference of the conveying roller 10. In the circumferential direction of the conveying roller 10, the spacing between adjacent air outlet holes 36 is d, the width of the pole ear 60 is W, and d / W≤3 / 4.

[0121] The width of the tab 60 refers to the dimension of the tab 60 in the length direction of the tab 60 body. For the length direction of the tab 60 body, reference may be made to the above description and will not be repeated here.

[0122] For example, the value of d / W can be 3 / 4, 5 / 8, 1 / 2, 3 / 8, 1 / 4, 1 / 8, etc.

[0123] In the above technical scheme, by setting the air outlet holes 36 to be arranged at intervals along the circumference of the conveying roller 10, the blowing range and blowing length of the blowing surface 37 in the circumferential direction of the conveying roller 10 can be increased, so that the airflow blown out by the blowing surface 37 is blown to the pole ear 60 more evenly, so that the pole ear 60 can be subjected to a more uniform airflow force along the conveying direction of the conveying roller 10, and the airflow blown out by the multiple air outlet holes 36 on the blowing surface 37 can act on multiple pole ears 60 at the same time, thereby improving the action range and effect of the smoothing mechanism 20; at the same time, by limiting the relationship between the spacing between adjacent air outlet holes 36 and the width of the pole ear 60, the airflow blown out by multiple air outlet holes 36 can act on the same pole ear 60 at the same time, so that the pole ear 60 is subjected to a more uniform airflow in the width direction, thereby better reducing the possibility of folding and wrinkling of the pole ear 60 during the passing of the pole sheet material strip 200 over the roller, thereby improving the production yield of the pole sheet.

[0124] In some embodiments, reference Figure 3-Figure 5 The blowing surface 37 includes a first blowing section 371 and a second blowing section 372. Air outlet holes 36 are formed on the first blowing section 371 and the second blowing section 372. The first blowing section 371 and the second blowing section 372 are arranged in sequence along the rotation direction of the conveying roller 10. In the circumferential direction of the conveying roller 10, the first blowing section 371 and the second blowing section 372 are respectively located on both sides of the material feeding roller position S.

[0125] The material strip entering the roller position S refers to: the position where the pole piece material strip 200 enters the conveyor roller 10. Before the pole piece material strip 200 enters the roller, it basically extends in a straight line. After the pole piece material strip 200 enters the roller, the pole piece material strip 200 can be supported by the conveyor roller 10 and the conveyor roller 10 can play a conveying role for the pole piece material strip 200. Under the action of the conveyor roller 10, the shape of the pole piece material strip 200 is similar to the shape of the outer peripheral surface of the conveyor roller 10. After entering the roller, the pole piece material strip 200 becomes an arc extending along the circumference of the conveyor roller 10 and is concentrically arranged with the conveyor roller 10.

[0126] The portion of the material strip body 50 located before the roller entry position is a straight segment 52 extending along a straight line, and the portion of the material strip body 50 located after the roller entry position is an arc segment 51 extending along an arc line, and the straight segment 52 is tangent to the arc segment 51. The roller entry position of the pole piece material strip 200 is also the connection position, tangent point position or boundary position of the straight segment 52 and the arc segment 51 of the pole piece material strip 200.

[0127] Among them, the first blowing section 371 can be provided with a plurality of air outlet holes 36, and the plurality of air outlet holes 36 on the first blowing section 371 are arranged at intervals along the length direction of the first blowing section 371; the second blowing section 372 can be provided with a plurality of air outlet holes 36, and the plurality of air outlet holes 36 on the second blowing section 372 are arranged at intervals along the length direction of the second blowing section 372.

[0128] The length of the second blowing section 372 may be greater than that of the first blowing section 371 , and the number of the air outlet holes 36 on the second blowing section 372 may be greater than the number of the air outlet holes 36 on the first blowing section 371 .

[0129] The distance between adjacent air outlet holes 36 in the second air blowing section 372 may be the same as the distance between adjacent air outlet holes 36 in the first air blowing section 371 .

[0130] In the above technical scheme, by setting the blowing surface 37 to include a first blowing section 371 and a second blowing section 372 and making the first blowing section 371 and the second blowing section 372 respectively located on both sides of the position where the material belt enters the roller, in the process of the pole piece material belt 200 passing the roller, the pole ear 60 can be blown and supported by the first blowing section 371 before entering the roller, thereby reducing the possibility of folding and wrinkling of the pole ear 60 before entering the roller. After the pole ear 60 enters the roller, it can be blown and supported by the second blowing section 372 to reduce the possibility of folding and wrinkling of the pole ear 60 before entering the roller. In this way, before and after the pole ear 60 enters the roller, the airflow of the blowing surface 37 is blown to the pole ear 60, thereby better reducing the possibility of folding and wrinkling of the pole ear 60 in the process of the pole piece material belt 200 passing the roller, and further improving the production yield of the pole sheet.

[0131] In some embodiments, reference Figure 3 Among all the air outlet holes 36 located in the first blowing section 371, the air outlet hole 36 farthest from the material entering the roller is the first air outlet hole 361. In the circumferential direction of the conveying roller 10, the distance between the first air outlet hole 361 and the material entering the roller is a, 5mm≤a≤30mm.

[0132] For example, the distance a between the first air outlet 361 and the position where the material belt enters the roller can be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, etc.

[0133] In the above technical solution, by setting the distance between the air outlet 36 in the first blowing section 371 that is farthest from the material bringing-in roller position and the material bringing-in roller position to 5mm-30mm, the effective length of the first blowing section 371 can be made not less than 5mm, so that the first blowing section 371 can have an effective blowing effect on the pole ear 60 before it enters the roller, and the effective length of the first blowing section 371 is made not more than 30mm, so that the length of the first blowing section 371 can be moderate, avoiding waste caused by excessive length of the first blowing section 371, and reducing the space occupied by the first blowing section 371.

[0134] In some embodiments, reference Figure 3-Figure 5 In the circumferential direction of the conveying roller 10, the extension trajectory of the first blowing section 371 is a straight line, and the extension trajectory of the second blowing section 372 is an arc.

[0135] For example, the blowing module 30 can extend along the circumference of the conveying roller 10, the part of the blowing module 30 corresponding to the first blowing section 371 can extend along a straight line, the part of the blowing module 30 corresponding to the second blowing section 372 can extend along an arc, and the surface of the blowing module 30 facing the conveying roller 10 can be formed as an arc surface extending along the circumference of the conveying roller 10.

[0136] In the above technical solution, the extension trajectory of the first blowing section 371 in the circumferential direction of the conveying roller 10 is set to be a straight line, so that the extension trajectory of the first blowing section 371 can match the extension trajectory of the corresponding pole piece material strip 200, which can avoid the influence of the first blowing section 371 on the conveying of the pole piece material strip 200, and can make the distance between the first blowing section 371 and the pole piece material strip 200 more uniform, so that the airflow blown to the pole ear 60 by the first blowing section 371 is more evenly distributed in the length direction of the conveying roller 10, so that the first blowing section 371 can have a better effect on the pole ear 60 before entering the roller. Blowing and supporting effect: Setting the extension trajectory of the second blowing section 372 in the circumferential direction of the conveying roller 10 as an arc can make the extension trajectory of the second blowing section 372 match the extension trajectory of the corresponding pole piece material strip 200, avoid the influence of the second blowing section 372 on the conveying of the pole piece material strip 200, and make the distance between the second blowing section 372 and the pole piece material strip 200 more uniform, so that the airflow blown to the pole ear 60 by the second blowing section 372 is more evenly distributed in the length direction of the conveying roller 10, so that the second blowing section 372 can have a better blowing and supporting effect on the pole ear 60 after it enters the roller.

[0137] In some embodiments, reference Figure 3 and Figure 4 The extension track of the second blowing section 372 is arranged concentrically with the conveying roller 10.

[0138] In the above technical scheme, on the basis of setting the extension trajectory of the second blowing section 372 in the circumferential direction of the conveying roller 10 as an arc, the extension trajectory of the second blowing section 372 is set concentrically with the conveying roller 10, so that the extension trajectory of the second blowing section 372 can be better matched with the corresponding pole piece strip 200, and the influence of the second blowing section 372 on the conveying of the pole piece strip 200 can be better avoided, and the distance between the second blowing section 372 and the pole piece strip 200 can be made more uniform, so that the airflow blown to the pole ear 60 by the second blowing section 372 is more evenly distributed in the length direction of the conveying roller 10, so that the second blowing section 372 can have a better blowing effect on the pole ear 60 after entering the roller.

[0139] In some embodiments, reference Figure 3 and Figure 4 The central angle corresponding to the extension trajectory of the second blowing section 372 is β, 40°≤β≤80°.

[0140] For example, the central angle β corresponding to the extension trajectory of the second blowing section 372 is 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, etc.

[0141] In the above technical solution, during the process of the pole piece strip 200 passing the roller, the central angle of the outer peripheral side portion of the pole piece strip 200 wrapped around the conveying roller 10 is generally less than 90°. By setting the central angle corresponding to the extension trajectory of the second blowing section 372 at 40° to 80°, the second blowing section 372 can have a larger blowing length and blowing range, so that the pole ear 60 after entering the roller can be subjected to the airflow action in a larger range and for a longer time, and the second blowing section 372 can act on multiple pole ears 60 after entering the roller at the same time, thereby improving the blowing effect of the second blowing section 372 on the pole ears 60 after entering the roller. Furthermore, by ensuring that the central angle corresponding to the extension trajectory of the second blowing section 372 is no greater than 80°, the second blowing section 372 can have a larger blowing length and blowing range to improve the blowing effect of the second blowing section 372 on the pole ear 60 after entering the roller, while also avoiding the excessive central angle of the second blowing section 372 causing an impact on the transmission of the pole piece strip 200, for example, avoiding the problem that the second blowing section 372 may interfere with the pole piece strip 200.

[0142] In some embodiments, reference Figure 3 and Figure 4 The material strip body 50 includes an arc segment 51 wound around the outer peripheral side of the conveying roller 10, the arc segment 51 is concentrically arranged with the conveying roller 10, and the central angle corresponding to the arc segment 51 is α, the second blowing segment 372 is located on the outer peripheral side of the arc segment 51, and the central angle corresponding to the extension trajectory of the second blowing segment 372 is β, 2 / 3α≤β≤α.

[0143] 2 / 3α≤β≤α can be understood as: the ratio of β to α ranges from 2 / 3 to 1, that is, 2 / 3≤β / α≤1. For example, the ratio of the central angle β corresponding to the extension trajectory of the second blowing section 372 to the central angle α corresponding to the arc section 51 can be 2 / 3, 3 / 4, 4 / 5, 5 / 6, 1, etc.

[0144] In the above technical solution, by making the second blowing section 372 correspond to the arc section 51 of the pole piece material strip 200, so that the second blowing section 372 matches the pole piece material strip 200 of the arc section 51, the influence of the second blowing section 372 on the pole piece conveying can be avoided, and the distance between the second blowing section 372 and the pole piece material strip 200 can be made more uniform, so that the airflow blown by the second blowing section 372 to the pole ear 60 is more evenly distributed in the length direction of the conveying roller 10, so that the second blowing section 372 can be used for the pole ear 60. It has a better blowing effect after entering the roller; and, by setting the ratio of the central angle of the second blowing section 372 to the central angle of the arc section 51 of the pole piece material strip 200 at 2 / 3 to 1, the second blowing section 372 can have a larger blowing length and blowing range, so that the pole ear 60 after entering the roller can be affected by airflow in a larger range and for a longer time, and the second blowing section 372 can act on multiple pole ears 60 after entering the roller at the same time, thereby improving the blowing effect of the second blowing section 372 on the pole ear 60 after entering the roller. Furthermore, by ensuring that the ratio of the central angle of the second blowing section 372 to the central angle of the arc section 51 of the pole piece strip 200 is not greater than 1, the second blowing section 372 can have a larger blowing length and blowing range to improve the blowing effect of the second blowing section 372 on the pole ear 60 after entering the roller, while also avoiding the excessive central angle of the second blowing section 372 causing an impact on the transmission of the pole piece strip 200, for example, avoiding the problem that the second blowing section 372 may interfere with the pole piece strip 200.

[0145] In some embodiments, reference Figure 3-Figure 5 A guide surface 34 is formed at one end of the blowing module 30 close to the position where the material strip enters the roller, and the guide surface 34 faces the conveying space 38. In the conveying direction of the pole piece material strip 200, the distance between the guide surface 34 and the outer peripheral surface of the conveying roller 10 gradually increases.

[0146] In the above technical solution, a guide surface 34 is formed at one end of the blowing module 30 close to the position where the material strip enters the roller, and the distance between the guide surface 34 and the outer peripheral surface of the conveying roller 10 is gradually increased in the conveying direction of the pole piece material strip 200. The guide surface 34 can be used to guide the pole piece material strip 200 into the roller, thereby reducing problems such as wrinkles that occur during the process of the pole piece material strip 200 entering the roller.

[0147] In some embodiments, reference Figure 3-Figure 5 , the guide surface 34 is formed as an arc surface.

[0148] In the above technical solution, by setting the guide surface 34 as an arc-shaped surface, the possibility of the pole piece strip 200 being scratched by the blowing module 30 when entering the roller can be reduced.

[0149] In some embodiments, reference Figure 4-Figure 5 , the cross section of the air outlet hole 36 is circular.

[0150] In the above technical solution, by setting the cross-section of the air outlet 36 to a circular shape, the airflow blown out of the air outlet 36 can form a relatively stable cylindrical wind column, which is not easy to disperse. This can improve the effect of the airflow blown out of the air outlet 36 on the pole ear 60 and enhance the blowing effect of the airflow blown out of the air outlet 36 on the pole ear 60.

[0151] In some embodiments, reference Figure 4-Figure 5 The diameter of the air outlet hole 36 is D, and D≤1mm.

[0152] In the above technical solution, on the basis of setting the cross-section of the air outlet 36 to be circular, the aperture of the air outlet 36 is made not greater than 1 mm, so that the airflow blown out of the air outlet 36 forms a relatively stable cylindrical wind column, which is not easy to disperse. At the same time, the flow area of ​​the air outlet 36 can be made smaller, thereby reducing the consumption of compressed air and the cost of use. In addition, the force on the pole ear 60 under the action of the blown airflow is stronger, which can improve the blowing effect of the airflow blown out of the air outlet 36 on the pole ear 60.

[0153] In some embodiments, the cross-sectional area of ​​a single air outlet hole 36 is smaller than the cross-sectional area of ​​a single air inlet hole 35 .

[0154] In the above technical solution, by making the cross-sectional area of ​​a single air outlet 36 smaller than the cross-sectional area of ​​a single air inlet 35, the flow area of ​​the air outlet 36 can be made smaller, thereby reducing the consumption of compressed air and lowering the cost of use. The air outlet pressure of the air outlet 36 can be made larger, so that the airflow blown out of the air outlet 36 can have a better blowing effect on the pole ear 60.

[0155] In some embodiments, reference Figure 6-Figure 8 The blowing module 30 includes a module body 31 and a partition plate 32. The module body 31 has an air cavity 33. The air cavity 33 is provided with a partition plate 32 to divide the air cavity 33 into a first air chamber 331 and a second air chamber 332. An air inlet 35 is provided on the wall of the first air chamber 331, and an air outlet 36 is provided on the wall of the second air chamber 332. The partition plate 32 is provided with a connecting hole 321, and the connecting hole 321 is used to connect the first air chamber 331 and the second air chamber 332.

[0156] The partition plate 32 may be connected and fixed to the module body 31 .

[0157] In the above technical solution, by setting the blowing module 30 with a module body 31 and a partition plate 32, the partition plate 32 can divide the air cavity 33 in the module body 31 into a first air chamber 331 and a second air chamber 332. The airflow can enter the first air chamber 331 from the air inlet 35, and after entering the first air chamber 331, it enters the second air chamber 332 through the connecting hole 321 on the partition plate 32, and the airflow entering the second air chamber 332 is blown out through the air outlet 36. The blowing module 30 adopts a double air chamber design, and the airflow is blown out from the air outlet 36 after being buffered by the two air chambers, so that the wind speed of the air outlet 36 can be made more uniform, thereby improving the blowing effect of the blowing module 30 on the pole ear 60.

[0158] In some embodiments, reference Figure 7-Figure 8 There are multiple communicating holes 321 , and the multiple communicating holes 321 are arranged at intervals along the circumference of the conveying roller 10 .

[0159] Each of the communication holes 321 may be in the shape of an elongated strip, and the length direction of the communication hole 321 may be perpendicular to the arrangement direction of the plurality of communication holes 321 .

[0160] In the above technical solution, by setting the connecting holes 321 to be multiple and arranged at intervals along the circumference of the conveying roller 10, the air flow in the first air chamber 331 can flow into the second air chamber 332 through the multiple connecting holes 321, so that the air flow in the second air chamber 332 can be more uniform in the circumferential direction of the conveying roller 10, so that the air flow blown out by the blowing module 30 in the circumferential direction of the conveying roller 10 can be more uniform, thereby improving the blowing effect of the blowing module 30 on the pole ear 60.

[0161] In some embodiments, reference Figure 7 and Figure 8 , the first air chamber 331 and the second air chamber 332 are arranged along the axial direction of the conveying roller 10; or, referring to Fig. 9 and Fig.10 The first air chamber 331 and the second air chamber 332 are arranged along the radial direction of the conveying roller 10 .

[0162] In the above technical solution, by arranging the first air chamber 331 and the second air chamber 332 along the axial direction or radial direction of the conveying roller 10, the two air chambers of the blowing module 30 can be arranged flexibly, and the arrangement of the two air chambers is also convenient.

[0163] In some embodiments, reference Figure 7-10The module body 31 includes a first shell 311 and a second shell 312 that are detachably connected. The partition plate 32 and the first shell 311 together define a first air chamber 331, and the partition plate 32 and the second shell 312 together define a second air chamber 332. The air inlet 35 is provided in the first shell 311, and the air outlet 36 is provided in the second shell 312.

[0164] For example, the first shell 311 and the second shell 312 may be connected via a fastener 40 .

[0165] In the above technical solution, by configuring the module body 31 to include a detachably connected first shell 311 and a second shell 312 , the module body 31 can be easily disassembled and assembled, for example, the air chamber 33 in the module body 31 can be easily maintained and cleaned.

[0166] In some embodiments, reference Figure 7-10 The partition plate 32 is sandwiched between the first shell 311 and the second shell 312 , and the partition plate 32 and the first shell 311 and the second shell 312 can be detachably connected.

[0167] For example, the partition plate 32 is connected to the first shell 311 through the fastener 40 , and the partition plate 32 is connected to the second shell 312 through the fastener 40 .

[0168] In the above technical solution, the partition plate 32 is clamped between a shell and a second shell 312 to facilitate the connection between the partition plate 32 and the first shell 311 and the second shell 312, and the partition plate 32 is detachably connected to the first shell 311 and the second shell 312, so the disassembly and assembly of the module body 31 is convenient, for example, it is convenient to maintain and clean the air cavity 33 in the module body 31.

[0169] In some embodiments, reference Figure 7-10 A plurality of first connection holes 391 are provided on the first shell 311, a plurality of second connection holes 392 are provided on the second shell 312, and a plurality of third connection holes 393 are provided on the partition plate 32. The numbers of the first connection holes 391, the second connection holes 392 and the third connection holes 393 are the same and correspond to each other. The fasteners 40 are passed through the corresponding first connection holes 391, the second connection holes 392 and the third connection holes 393 to connect the first shell 311, the partition plate 32 and the second shell 312.

[0170] In the above technical solution, by connecting the first shell 311 , the partition plate 32 and the second shell 312 through the same fastener 40 , the assembly and disassembly of the blowing module 30 is relatively simple and the connection is tight.

[0171] In the second aspect, the utility model provides a pole piece processing equipment, including: a pole piece cutting device and a pole piece processing device 100 according to the above-mentioned first aspect of the utility model, the pole piece cutting device is used to cut out a pole ear 60 on a pole piece strip 200, and in the processing direction of the pole piece, the pole piece processing device 100 is located on the downstream side of the pole piece cutting device.

[0172] The pole piece cutting device may use laser cutting to cut the pole lug 60 from the pole piece strip 200 .

[0173] After the pole piece strip 200 is cut by the pole piece cutting device to form the pole ear 60, it is conveyed and processed by the pole piece processing device 100. The conveying roller 10 of the pole piece processing device 100 is used to convey the pole piece strip 200, and the smoothing mechanism 20 of the pole piece processing device 100 is used to blow the pole ear 60. The smoothing mechanism 20 of the pole piece processing device 100 can also blow away the particles and dust generated on or near the pole ear 60 when the pole piece cutting device cuts the pole ear 60 in the previous process.

[0174] In the above technical scheme, by setting the above-mentioned electrode processing device 100, after the electrode strip 200 is cut by the electrode cutting device, during the process of being conveyed by the conveying roller 10 of the electrode processing device 100, the smoothing mechanism 20 of the electrode processing device 100 can blow air flow toward the electrode ear 60 and in the direction close to the conveying roller 10, thereby reducing the possibility of folding and wrinkling of the electrode ear 60 during the process of the electrode strip 200 passing the roller, thereby improving the production yield of the electrode.

[0175] Refer to the following Figure 1-Figure 8 A pole piece processing device 100 according to some embodiments of the present invention is described.

[0176] In this embodiment, the electrode sheet processing device 100 includes a conveying roller 10 and a smoothing mechanism 20, and the smoothing mechanism 20 includes a blowing module 30, the blowing module 30 is located on the outer peripheral side of the conveying roller 10 and the blowing module 30 is spaced apart from the conveying roller 10, so as to define a conveying space 38 for conveying the electrode sheet strip 200 between the blowing module 30 and the outer peripheral surface of the conveying roller 10. The blowing module 30 extends along the circumference of the conveying roller 10 and the blowing module 30 is located on the upper side of the conveying roller 10, and the blowing surface 37 extends along the circumference of the conveying roller 10. The blowing surface 37 is located at one end of the blowing module 30 close to the conveying roller 10, and the blowing surface 37 is located on the axial side of the blowing module 30 along the conveying roller 10, and the blowing surface 37 extends obliquely toward the direction close to the middle of the blowing module 30 along the radial direction of the conveying roller 10 and toward the direction close to the central axis of the conveying roller 10.

[0177] An air outlet hole 36 is formed on the blowing surface 37. The cross section of the air outlet hole 36 is circular. The aperture of the air outlet hole 36 is D, and D≤1mm. There are multiple air outlet holes 36, and the multiple air outlet holes 36 are arranged at intervals along the circumference of the conveying roller 10. The blowing surface 37 includes a first blowing section 371 and a second blowing section 372. The air outlet holes 36 are formed on the first blowing section 371 and the second blowing section 372. The first blowing section 371 and the second blowing section 372 are respectively located on both sides of the material belt entering the roller. In the circumferential direction of the conveying roller 10, the extension trajectory of the first blowing section 371 is a straight line, and the extension trajectory of the second blowing section 372 is an arc. The extension trajectory of the second blowing section 372 is concentric with the conveying roller 10.

[0178] A guide surface 34 is formed at one end of the blowing module 30 close to the position where the material strip enters the roller, and the guide surface 34 faces the conveying space 38. In the conveying direction of the pole piece material strip 200, the distance between the guide surface 34 and the outer peripheral surface of the conveying roller 10 gradually increases, and the guide surface 34 is formed into an arc surface.

[0179] The air blowing module 30 includes a module body 31 and a partition plate 32. The module body 31 has an air chamber 33. The air chamber 33 is provided with a partition plate 32 to separate the air chamber 33 into a first air chamber 331 and a second air chamber 332. The module body 31 includes a first shell 311 and a second shell 312 that are detachably connected. The partition plate 32 and the first shell 311 together define the first air chamber 331. The partition plate 32 and the second shell 312 together define the second air chamber 332. The air inlet 35 is provided in the first shell 311, and the air outlet 36 is provided in the second shell 312. The first air chamber 331 and the second air chamber 332 are arranged along the radial direction of the conveying roller 10, and the second air chamber 332 is located on the side of the first air chamber 331 close to the conveying roller 10. The first shell 311 and the second shell 312 are arranged along the radial direction of the conveying roller 10, the second shell 312 is located on the side of the first shell 311 close to the conveying roller 10, and the air inlet 35 is provided on the side of the first shell 311 away from the second shell 312. The partition plate 32 is provided with a connecting hole 321, and the connecting hole 321 is used to connect the first air chamber 331 and the second air chamber 332. There are multiple connecting holes 321, and the multiple connecting holes 321 are arranged at intervals along the circumference of the conveying roller 10. The above-mentioned guide surface 34 is formed on the second shell 312.

[0180] In this embodiment, by arranging a smoothing mechanism 20 near the conveying roller 10, in the process of the electrode sheet strip 200 passing through the conveying roller 10, the blowing module 30 of the smoothing mechanism 20 can blow airflow toward the electrode ear 60 and in the direction close to the conveying roller 10. The airflow can apply a force on the electrode ear 60 in the direction close to the conveying roller 10 to press the electrode ear 60. At the same time, under the support of the conveying roller 10, the possibility of the electrode ear 60 being folded or wrinkled in the process of the electrode sheet strip 200 passing through the roller can be reduced, thereby improving the production yield of the electrode sheet strip 200.

[0181] Furthermore, by setting the blowing surface 37 to include a first blowing section 371 and a second blowing section 372 and making the first blowing section 371 and the second blowing section 372 respectively located on both sides of the position where the material strip enters the roller, in the process of the pole piece material strip 200 passing over the roller, the pole ear 60 can be blown and supported by the first blowing section 371 before entering the roller, thereby reducing the possibility of folding and wrinkling of the pole ear 60 before entering the roller. After the pole ear 60 enters the roller, the pole ear 60 can be blown and supported by the second blowing section 372, thereby reducing the possibility of folding and wrinkling of the pole ear 60 before entering the roller. In this way, the airflow of the blowing surface 37 is blown to the pole ear 60 before and after the pole ear 60 enters the roller, thereby better reducing the possibility of folding and wrinkling of the pole ear 60 in the process of the pole piece material strip 200 passing over the roller, thereby further improving the production yield of the pole sheet.

[0182] By setting the cross-section of the air outlet 36 to be circular and the aperture of the air outlet 36 to be no greater than 1 mm, the airflow blown out of the air outlet 36 forms a relatively stable cylindrical wind column that is not easy to disperse. At the same time, the flow area of ​​the air outlet 36 can be made smaller, thereby reducing the consumption of compressed air and the cost of use. In addition, the force on the pole ear 60 under the action of the blown air flow is stronger, which can improve the blowing effect of the airflow blown out of the air outlet 36 on the pole ear 60.

[0183] The blowing module 30 adopts a double air chamber design. The airflow is buffered by the two air chambers and then blown out from the air outlet 36 , which can make the wind speed of the air outlet 36 more uniform and improve the blowing effect of the blowing module 30 on the tab 60 .

[0184] Refer to the following Figure 9-10 The following describes a pole piece processing device 100 according to other embodiments of the present invention.

[0185] In this embodiment, the electrode processing device 100 is the same as the above Figure 1-Figure 8The main difference between the electrode processing device 100 in the embodiment is the arrangement of the first air chamber 331 and the second air chamber 332. In this embodiment, the first air chamber 331 and the second air chamber 332 are arranged along the axial direction of the conveying roller 10, and the second air chamber 332 is located on the side of the first air chamber 331 close to the electrode tab 60. The first shell 311 and the second shell 312 are arranged along the axial direction of the conveying roller 10, and the second shell 312 is located on the side of the first shell 311 close to the electrode tab 60.

[0186] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0187] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pole piece processing device, characterized in that: include: A conveying roller, the conveying roller is used to convey the pole piece strip, the pole piece comprises a strip body and a pole ear, the pole ear is connected to the strip body along the axial side of the conveying roller; A smoothing mechanism, the smoothing mechanism includes a blowing module, an air cavity is formed in the blowing module, an air inlet hole and an air outlet hole are formed on the blowing module, the air cavity connects the air inlet hole and the air outlet hole, and the blowing module is used to blow air through the air outlet hole toward the pole ear and in a direction close to the conveying roller.

2. The electrode processing device according to claim 1, characterized in that: The blowing module is located on the outer peripheral side of the conveying roller and is spaced apart from the conveying roller to define a conveying space for conveying the pole piece strip between the blowing module and the outer peripheral surface of the conveying roller. The blowing module has a blowing surface, which extends along the circumference of the conveying roller, and the air outlet is formed on the blowing surface.

3. The electrode processing device according to claim 2, characterized in that: The blowing surface is located at one end of the blowing module close to the conveying roller.

4. The electrode processing device according to claim 2, characterized in that: The air blowing surface is located on the axial side of the air blowing module along the conveying roller.

5. The electrode processing device according to claim 4, characterized in that: Along the radial direction of the conveying roller and in a direction close to the central axis of the conveying roller, the blowing surface extends obliquely toward a direction close to the middle of the blowing module.

6. The electrode processing device according to claim 2, characterized in that: There are multiple air outlet holes, which are arranged at intervals along the circumference of the conveying roller; and / or there are multiple air inlet holes, which are arranged at intervals along the circumference of the conveying roller.

7. The electrode processing device according to claim 2, characterized in that: The air inlet hole is located on a side of the air blowing module away from the conveying roller; or, the air inlet hole is located on an axial side of the air blowing module along the conveying roller.

8. The electrode processing device according to claim 2, characterized in that: There are a plurality of air outlet holes, which are arranged at intervals along the circumference of the conveying roller. In the circumferential direction of the conveying roller, the spacing between adjacent air outlet holes is d, the width of the pole ear is W, and d / W≤3 / 4.

9. The electrode processing device according to claim 2, characterized in that: The blowing surface includes a first blowing section and a second blowing section, and the air outlet holes are formed on the first blowing section and the second blowing section. The first blowing section and the second blowing section are arranged in sequence along the rotation direction of the conveying roller. In the circumferential direction of the conveying roller, the first blowing section and the second blowing section are respectively located on both sides of the position where the material is brought into the roller.

10. The electrode processing device according to claim 9, characterized in that: Among all the air outlet holes located in the first blowing section, the air outlet hole farthest from the material belt entering the roller position is the first air outlet hole. In the circumferential direction of the conveying roller, the distance between the first air outlet hole and the material belt entering the roller position is a, 5mm≤a≤30mm.

11. The electrode processing device according to claim 9, characterized in that: In the circumferential direction of the conveying roller, the extension trajectory of the first blowing section is a straight line, and the extension trajectory of the second blowing section is an arc.

12. The electrode processing device according to claim 11, characterized in that: The extension track of the second blowing section is arranged concentrically with the conveying roller; and / or the central angle corresponding to the extension track of the second blowing section is β, 40°≤β≤80°.

13. The electrode processing device according to claim 11, characterized in that: The material strip body includes an arc segment wound around the outer peripheral side of the conveying roller, the arc segment is concentrically arranged with the conveying roller, and the central angle corresponding to the arc segment is α, the second blowing segment is located on the outer peripheral side of the arc segment, and the central angle corresponding to the extension trajectory of the second blowing segment is β, 2 / 3α≤β≤α.

14. The electrode processing device according to claim 2, characterized in that: A guide surface is formed at one end of the blowing module close to the position where the material strip enters the roller, and the guide surface faces the conveying space. In the conveying direction of the pole piece material strip, the distance between the guide surface and the outer peripheral surface of the conveying roller gradually increases.

15. The electrode processing device according to claim 14, characterized in that: The guide surface is formed as an arc surface.

16. The electrode processing device according to claim 1, characterized in that: The cross section of the air outlet is circular.

17. The electrode processing device according to claim 1, characterized in that: The aperture of the air outlet is D, D≤1 mm; and / or the cross-sectional area of ​​a single air outlet is smaller than the cross-sectional area of ​​a single air inlet.

18. The electrode processing device according to any one of claims 1 to 17, characterized in that: The blowing module includes a module body and a partition plate. The module body has the air containing cavity. The air containing cavity is provided with a partition plate to separate the air containing cavity into a first air chamber and a second air chamber. The air inlet hole is provided on the wall of the first air chamber, the air outlet hole is provided on the wall of the second air chamber, and a connecting hole is provided on the partition plate. The connecting hole is used to connect the first air chamber and the second air chamber.

19. The electrode processing device according to claim 18, characterized in that: There are a plurality of communicating holes, and the plurality of communicating holes are arranged at intervals along the circumference of the conveying roller; and / or the first air chamber and the second air chamber are arranged along the axial direction or radial direction of the conveying roller.

20. The electrode processing device according to claim 18, characterized in that: The module body includes a first shell and a second shell that are detachably connected, the partition plate and the first shell together define the first air chamber, the partition plate and the second shell together define the second air chamber, the air inlet is provided in the first shell, and the air outlet is provided in the second shell.

21. A pole piece processing device, characterized in that: include: A pole piece cutting device, the pole piece cutting device is used to cut the pole lugs from the pole piece strip; According to any one of claims 1-20, the pole piece processing device is located on the downstream side of the pole piece cutting device in the processing direction of the pole piece.

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