Battery pole piece rolling equipment

Abstract

The utility model discloses battery pole piece rolling equipment, and relates to the technical field of battery production. The first roller and the second roller are arranged in parallel; the two bearing seat assemblies are arranged at the two ends, in the axial direction, of the first roller or the second roller correspondingly, and the bearing seat assemblies are arranged on the rack and comprise first bearing seats matched with the first roller and second bearing seats matched with the second roller; the adjusting devices are arranged between the first bearing seat and the second bearing seat of each bearing seat assembly, each adjusting device comprises two adjusting assemblies which are arranged in the axial direction of the first roller in a spaced mode, and the sizes of the adjusting assemblies in the arrangement direction of the first roller and the second roller are adjustable; a driving device used for driving the first roller and / or the second roller to conduct extrusion is located between the two adjusting assemblies. According to the battery pole piece rolling equipment, deflection deformation generated by the first roller and the second roller can be counteracted, and operation is easy.

Description

Technical Field

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

[0002] In related technologies, in order to improve the performance of battery pole pieces such as energy density and cycle life, the requirements for lithium battery manufacturing processes are constantly increasing. Currently, most battery manufacturing processes use rolling technology to roll battery pole pieces. For the rolling process, the main focus is to improve the high compaction density of the pole pieces and the consistency of the compaction thickness. However, as the width of the battery pole piece continues to increase, the required width of the roll surface of the rolling mill becomes wider. For rolling mills with the same diameter, the wider the roll surface, the greater the deflection deformation of the rolling mill itself. And the greater the deflection deformation of the rolling mill, the inevitable result is the reduction of the consistency of the compaction thickness of the pole piece. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a battery pole piece rolling device, which can offset the deflection deformation generated by the first rolling mill and the second rolling mill and adjust the thickness consistency of the battery pole piece in the transverse direction.

[0004] In a first aspect, the utility model provides a battery pole piece rolling device, including: a frame; a first rolling mill and a second rolling mill, the first rolling mill and the second rolling mill are arranged in parallel; bearing seat assemblies, there are two bearing seat assemblies and they are respectively arranged at both ends in the axial direction of the first rolling mill or the second rolling mill, the bearing seat assemblies are arranged on the frame and include a first bearing seat cooperating with the first rolling mill and a second bearing seat cooperating with the second rolling mill; an adjusting device, an adjusting device is arranged between the first bearing seat and the second bearing seat of each bearing seat assembly, the adjusting device includes two adjusting components arranged at intervals in the axial direction of the first rolling mill, the size of the adjusting component in the arrangement direction of the first rolling mill and the second rolling mill is adjustable, and a driving device for driving the first rolling mill and / or the second rolling mill to extrude is located between the two adjusting components.

[0005] In the above technical solution, adjustment devices are respectively arranged between the first bearing seats at both ends of the first roll and the second bearing seats at both ends of the second roll. The adjustment device includes two adjustment components arranged in the axial direction of the first roll or the second roll, and the size of the adjustment component in the arrangement direction of the first roll and the second roll is adjustable. When the first roll or the second roll has a deflection deformation, the size of some adjustment components in the arrangement direction of the first roll and the second roll can be adjusted to serve as a fulcrum, and under the action of the first driving device for driving the first roll or the second driving device for driving the second roll, the first roll or the second roll is deformed to offset the deflection deformation generated by the first roll and the second roll, so that the size of the roll gap between the first roll and the second roll in the axial direction of the first roll tends to be consistent, thereby adjusting the thickness consistency of the battery pole piece transversely and meeting the production process requirements. In addition, the replacement cycle of the first roll and the second roll in this application is short and the difficulty is small.

[0006] In some embodiments, the adjustment component includes: a first wedge and a second wedge. The first wedge and the second wedge are arranged in the arrangement direction of the first roll and the second roll, and the inclined surfaces of the first wedge and the second wedge are mutually attached.

[0007] In the above technical solution, a first wedge and a second wedge are arranged in the adjustment component. The first wedge and the second wedge are arranged in the arrangement direction of the first roll and the second roll, and the inclined surfaces of the first wedge and the second wedge are mutually attached. By adjusting the relative positions of the first wedge and the second wedge, the size of the first wedge and the second wedge in the arrangement direction of the first roll and the second roll can be adjusted. The structure is simple and the operation is convenient. In addition, the replacement cycle of the first roll and the second roll in this application is short and the difficulty is small.

[0008] In some embodiments, the first wedge is movably arranged on the first bearing seat, the moving direction of the first wedge is perpendicular to the axis of the first roll, and the second wedge is fixed on the second bearing seat.

[0009] In the above technical solution, the second wedge is fixed on the second bearing seat, and the first wedge is movably arranged on the first bearing seat, which is convenient for fixing the adjustment component and improving the adjustment accuracy of the adjustment component for the deflection deformation of the first roll and the second roll. At the same time, the relative movement of the first wedge and the second wedge is realized by the movement of the first wedge, so as to facilitate the adjustment of the size of the adjustment component in the arrangement direction of the first roll and the second roll. The structure is simple and the operation is convenient.

[0010] In some embodiments, the adjustment component further includes a driving component, and the driving component is arranged on the first bearing seat and used to drive the first wedge to move.

[0011] In the above technical solution, by setting a driving component to drive the movement of the first inclined iron, the automation of the movement of the first inclined iron can be realized, and the automation of the adjustment of the battery pole sheet rolling equipment can be realized, so that real-time adjustment can be made according to the thickness of the battery pole sheet, thereby improving the problem of poor consistency in the thickness of the battery pole sheet.

[0012] In some embodiments, the drive assembly includes: a drive motor, which is disposed on the first bearing seat; a transmission mechanism, which is transmission-connected to the output shaft of the drive motor and the first bevel iron, and is used to convert the rotation of the drive motor into movement of the first bevel iron.

[0013] In the above technical solution, by arranging a driving motor and a transmission mechanism in the driving assembly, the driving motor can be used to improve the accuracy of the movement of the first oblique iron to meet the process requirements of the deflection deformation of the first roller or the second roller under different conditions. At the same time, the rotation of the driving motor is converted into the movement of the first oblique iron through the transmission mechanism, which facilitates the driving motor to drive the first oblique iron to move.

[0014] The driving assembly further includes a reduction mechanism, wherein an input end of the reduction mechanism is connected to an output shaft of the driving motor, and an output end of the reduction mechanism is transmission-connected to the transmission mechanism.

[0015] In the above technical solution, by setting up a deceleration mechanism, the rotation speed transmitted from the drive motor to the transmission mechanism can be reduced, thereby reducing the moving speed of the first oblique iron, and then accurately adjusting the position of the first oblique iron to meet the process requirements of the deflection deformation of the first roller or the second roller under different conditions.

[0016] In some embodiments, a limiting groove is provided on the first bearing seat, and the limiting groove extends along the moving direction of the first inclined iron, and the first inclined iron is movably disposed in the limiting groove.

[0017] In the above technical solution, by setting a limit groove, the first oblique iron can be limited, so that the moving direction of the first oblique iron is more accurate and the cooperation with the second oblique iron is more reliable, thereby improving the reliability of the adjustment component and reducing the situation where the fulcrum is unstable and the deflection and deformation of the first roller and the second roller cannot be adjusted due to the unreliable adjustment component.

[0018] In some embodiments, each of the first oblique irons is provided with oblique iron bars on both sides along the axial direction of the first rolling roller, the oblique iron bars are arranged on the first bearing seat and extend along the moving direction of the first oblique iron, and the limiting groove is defined between the two oblique iron bars.

[0019] In the above technical solution, by providing a plurality of wedge bar strips on the surface of the first bearing block, the plurality of wedge bar strips define two limiting grooves, which facilitates the setting of the limiting grooves and can reduce the damage to the structure of the first bearing block itself. On the basis of improving the structural strength of the first bearing block, it facilitates the movement of the first wedge.

[0020] In some embodiments, the adjustment assembly further includes: a limiting member for defining the relative positions of the first wedge and the second wedge.

[0021] In the above technical solution, by providing the limiting member, the relative positions of the first wedge and the second wedge can be defined, reducing the problem that the first wedge and the second wedge are disengaged from each other or the adjustment assembly is damaged due to a large displacement of the first wedge.

[0022] In some embodiments, the limiting member includes: a photoelectric assembly including a first photoelectric switch and a second photoelectric switch, the first photoelectric switch and the second photoelectric switch being spaced apart along the moving direction of the first wedge; a shielding member for cooperating with the first photoelectric switch or the second photoelectric switch, the shielding member moving relatively between the first photoelectric switch and the second photoelectric switch, and one of the photoelectric assembly and the shielding member is provided on the first wedge and the other is fixed relative to the first bearing block.

[0023] In the above technical solution, by providing the photoelectric assembly and the shielding member, one of the photoelectric assembly and the shielding member is provided on the first wedge and the other is fixed relative to the first bearing block, so that there is relative movement between the photoelectric assembly and the shielding member. In addition, the photoelectric assembly includes a first photoelectric switch and a second photoelectric switch spaced apart along the moving direction of the first wedge. By the cooperation of the first photoelectric switch and the second photoelectric switch with the shielding member, two limit positions of the movement of the first wedge can be defined, thereby defining the movement displacement range of the first wedge and reducing the problem that the first wedge and the second wedge are disengaged from each other or the adjustment assembly is damaged due to a large displacement of the first wedge.

[0024] In some embodiments, the adjustment assembly further includes: a detection element for detecting whether the inclined surfaces of the first wedge and the second wedge are in contact.

[0025] In the above technical solution, by providing the detection element to detect whether the inclined surfaces of the first wedge and the second wedge are in contact, the relative positions of the first wedge and the second wedge can be adjusted in time, so that the inclined surfaces of the first wedge and the second wedge are in contact, reducing the problem that the distance between the first roll and the second roll is unstable due to the non-contact between the first wedge and the second wedge during the production process, resulting in fluctuations in the thickness of the battery electrode sheet.

[0026] In some embodiments, the detection element includes a proximity sensor and a mating member that cooperates with the proximity sensor. The proximity sensor is disposed on one of the first wedge and the second wedge, and the mating member is disposed on the other of the first wedge and the second wedge.

[0027] In the above technical solution, by setting the detection element as a proximity sensor and a mating member, it is not only possible to effectively detect whether the inclined surfaces of the first wedge and the second wedge are in contact, but also reduce the influence on the relative movement of the first wedge and the second wedge.

[0028] In some embodiments, the first wedge and the second wedge have the same structure. The friction coefficient between the inclined surface of the first wedge and the inclined surface of the second wedge is A, and the inclination angle of the inclined surfaces of the first wedge and the second wedge is α, and it satisfies: tanα < A.

[0029] In the above technical solution, by making the inclination angle α of the inclined surfaces of the first wedge and the second wedge satisfy tanα < A, where A is the friction coefficient between the inclined surface of the first wedge and the inclined surface of the second wedge, the first wedge and the second wedge can achieve friction self-locking, reducing the problem of relative slip between the first wedge and the second wedge and causing equipment safety accidents.

[0030] In some embodiments, the battery electrode sheet rolling equipment further includes: a positioning assembly, the positioning assembly is disposed on the first bearing seat and / or the second bearing seat, and the positioning assembly is used to position a plurality of the adjustment assemblies on the same straight line extending along the axis direction of the first rolling roll.

[0031] In the above technical solution, by setting the positioning assembly, the positioning assembly can be used to position the adjustment assemblies, so that a plurality of adjustment assemblies are positioned on the same straight line extending along the axis direction of the first rolling roll, making the positions of all adjustment assemblies consistent, digitizing the positions of the adjustment assemblies, and improving the control ability to offset deflection deformation.

[0032] In some embodiments, the positioning assembly includes a plurality of positioning members. The plurality of positioning members are located on the same straight line extending along the axis direction of the first rolling roll. Each adjustment assembly is provided with a positioning member on one side along a first direction, and the first direction is perpendicular to the axial direction of the first rolling roll and the arrangement direction of the first rolling roll and the second rolling roll.

[0033] In the above technical solution, by making the positioning assembly have a plurality of positioning members, with a positioning member provided on one side along the first direction of each adjustment assembly, and the plurality of positioning members being located on the same straight line extending along the axis direction of the first rolling roll, it is not only possible to improve the reliability of positioning the adjustment assemblies, but also simplify the structure of the battery electrode sheet rolling equipment.

[0034] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0035] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0036] Figure 1 is a schematic diagram of a battery pole piece rolling device according to an embodiment of the present utility model;

[0037] Figure 2 is a perspective view of an adjustment device of a battery pole piece rolling device according to an embodiment of the present utility model;

[0038] Figure 3 is a perspective view of an adjustment assembly of an adjustment device of a battery pole piece rolling device according to an embodiment of the present utility model;

[0039] Figure 4 is Figure 3 an enlarged view of part B in

[0040] Reference Signs:

[0041] 100, battery pole piece rolling device;

[0042] 1, first rolling roll; 2, second rolling roll;

[0043] 3, bearing seat assembly; 31, first bearing seat; 311, wedge bar; 312, limit groove; 32, second bearing seat;

[0044] 4, adjustment device; 41, adjustment assembly; 411, first wedge; 412, second wedge; 413, drive assembly; 4131, drive motor; 4132, transmission mechanism; 4133, reduction mechanism; 414, limiting member; 4142, first photoelectric switch; 4143, second photoelectric switch; 4144, shielding member; 415, detection element; 4151, proximity sensor; 4152, mating member;

[0045] 5, positioning member. Detailed Embodiments

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0047] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "comprising" and "having" and any variations thereof in the description and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present utility model or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0048] The mention of "embodiment" in the present utility model means that the specific features, structures, or characteristics described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0049] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", and "attached to" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0050] The term "and / or" in the present utility model is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present utility model generally represents an "or" relationship between the front and rear associated objects.

[0051] In the embodiments of the present utility model, the same reference numerals denote the same components, and for the sake of brevity, in different embodiments, the detailed descriptions of the same components are omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of the present utility model shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only illustrative descriptions and should not constitute any limitation to the present utility model.

[0052] The "plurality" mentioned in the present utility model refers to two or more (including two).

[0053] In the embodiments of the present utility model, if there is no special instruction, all embodiments and optional embodiments of the present utility model can be combined with each other to form a new technical solution.

[0054] In the embodiments of the present utility model, if there is no special instruction, all technical features and optional technical features of the present utility model can be combined with each other to form a new technical solution.

[0055] In the related art, in order to improve the performance such as the energy density and cycle life of the battery electrode sheet, the requirements for the lithium battery manufacturing process are continuously increasing. Currently, most battery manufacturing processes use the rolling technology to roll the battery electrode sheet. For the rolling process, the main thing is to improve the high compaction density of the electrode sheet and the consistency of the compaction thickness. However, as the width of the battery electrode sheet continues to increase, the required width of the roll surface of the rolling mill is also getting wider. For rolling mills with the same diameter, the wider the roll surface, the greater the deflection deformation of the rolling mill itself. And the greater the deflection deformation of the rolling mill, the inevitable result is the reduction of the consistency of the compaction thickness of the electrode sheet.

[0056] Based on this, the present utility model provides a battery electrode sheet rolling device, which includes a frame, a first rolling mill, a second rolling mill, a bearing seat assembly, and an adjustment device. The first rolling mill and the second rolling mill are arranged in parallel; there are two bearing seat assemblies, which are respectively arranged at both ends in the axial direction of the first rolling mill or the second rolling mill. The bearing seat assemblies are arranged on the frame and include a first bearing seat for cooperating with the first rolling mill and a second bearing seat for cooperating with the second rolling mill; an adjustment device is arranged between the first bearing seat and the second bearing seat of each bearing seat assembly. The adjustment device includes two adjustment components spaced apart in the axial direction of the first rolling mill. The size of the adjustment components in the arrangement direction of the first rolling mill and the second rolling mill is adjustable, and a driving device for driving the first rolling mill and / or the second rolling mill to extrude is located between the two adjustment components.

[0057] The above-mentioned battery electrode sheet rolling equipment can adjust the thickness consistency of the battery electrode sheet transversely to meet the production process requirements by respectively arranging adjusting devices between the first bearing seats at both ends of the first rolling roll and the second bearing seats at both ends of the second rolling roll. The adjusting device includes two adjusting components arranged in the axial direction of the first rolling roll or the second rolling roll, and the size of the adjusting component in the arrangement direction of the first rolling roll and the second rolling roll is adjustable. When the first rolling roll or the second rolling roll has deflection deformation, the size of some adjusting components in the arrangement direction of the first rolling roll and the second rolling roll can be adjusted to serve as a fulcrum, and under the action of the first driving device for driving the first rolling roll or the second driving device for driving the second rolling roll, the first rolling roll or the second rolling roll is deformed to offset the deflection deformation generated by the first rolling roll and the second rolling roll, so that the size of the roll gap between the first rolling roll and the second rolling roll in the axial direction of the first rolling roll tends to be consistent. In addition, the replacement cycle of the first rolling roll and the second rolling roll in this application is short and the difficulty is small.

[0058] Reference is made below to Figures 1-4 describe a battery electrode sheet rolling equipment 100 according to an embodiment of the present invention.

[0059] Referring to Figures 1-3 , the present invention provides a battery electrode sheet rolling equipment 100, including: a frame, a first rolling roll 1, a second rolling roll 2, a bearing seat assembly 3, and an adjusting device 4. The first rolling roll 1 and the second rolling roll 2 are arranged in parallel; there are two bearing seat assemblies 3, which are respectively arranged at both ends in the axial direction of the first rolling roll 1 or the second rolling roll 2. The bearing seat assembly 3 is arranged on the frame and includes a first bearing seat 31 cooperating with the first rolling roll 1 and a second bearing seat 32 cooperating with the second rolling roll 2; an adjusting device 4 is arranged between the first bearing seat 31 and the second bearing seat 32 of each bearing seat assembly 3. The adjusting device 4 includes two adjusting components 41 spaced apart in the axial direction of the first rolling roll 1. The size of the adjusting component 41 in the arrangement direction of the first rolling roll 1 and the second rolling roll 2 is adjustable, and a driving device for driving the first rolling roll 1 and / or the second rolling roll 2 to extrude is located between the two adjusting components 41.

[0060] The cross-section of the first rolling roll 1 and the first rolling roll 1 when there is no deflection deformation can be circular. The first rolling roll 1 and the second rolling roll 2 can respectively rotate around their central axes. The first rolling roll 1 and the second rolling roll 2 are parallel and spaced apart. There is a roll gap between the first rolling roll 1 and the second rolling roll 2, and the battery electrode sheet can be located in the roll gap. Power moving towards each other can be applied to at least one of the first rolling roll 1 and the second rolling roll 2, so as to realize the extrusion of the battery electrode sheet.

[0061] The first roller 1 and the second roller 2 may rotate in opposite directions, and the battery electrode sheet may be driven forward during the rotation of the first roller 1 and the second roller 2. For example, in the projection of a plane perpendicular to the axes of the first roller 1 and the second roller 2, the first roller 1 may rotate counterclockwise, and the second roller 2 may rotate clockwise, or the first roller 1 may rotate clockwise, and the second roller 2 may rotate counterclockwise.

[0062] Two bearing seat assemblies 3 are arranged on the frame. The two bearing seat assemblies 3 are spaced apart along the axial direction of the first roller 1 or the second roller 2. Each bearing seat assembly 3 includes a first bearing seat 31 and a second bearing seat 32. The two ends of the first roller 1 are rotatably arranged in the two first bearing seats 31 of the two bearing seat assemblies 3, and the two ends of the second roller 2 are rotatably arranged in the two second bearing seats 32 of the two bearing seat assemblies 3, so as to facilitate the rotation of the first roller 1 and the second roller 2.

[0063] A driving device for driving the first roller 1 and the second roller 2 for extrusion is arranged on the frame. For example, the driving device may include a first driving device, and the first driving device is used to drive the first roller 1 to move toward the second roller 2. The first driving device may include a first oil cylinder. There may be two first oil cylinders, and the two first oil cylinders are arranged on the frame. The two first oil cylinders are respectively connected to the two first bearing seats 31, and are used to push the two first bearing seats 31 to move toward the second bearing seat 32, thereby driving the first roller 1 to move toward the second roller 2 to achieve extrusion of the battery electrode.

[0064] Of course, the driving device can also include a second driving device, which is used to drive the second roller 2 to move toward the first roller 1. The second driving device can include a second oil cylinder. There can be two second oil cylinders. The two second oil cylinders are arranged on the frame. The two second oil cylinders are respectively connected to the two second bearing seats 32, and are used to push the two second bearing seats 32 to move toward the first bearing seat 31, thereby driving the second roller 2 to move toward the first roller 1 to achieve the extrusion of the battery electrode.

[0065] The first driving device may be disposed on a side of the first bearing seat 31 away from the second bearing seat 32, the first oil cylinder may extend along the arrangement direction of the first roller 1 and the second roller 2, and the second driving device may be disposed on a side of the second bearing seat 32 away from the first bearing seat 31, and the second oil cylinder may extend along the arrangement direction of the first roller 1 and the second roller 2. For example, the first roller 1 and the second roller 2 extend in the horizontal direction and are arranged in the up-down direction, and the first oil cylinder and the second oil cylinder extend in the up-down direction, thereby facilitating the application of driving force to the first bearing seat 31 or the second bearing seat 32.

[0066] An adjusting device 4 is provided between the first bearing housing 31 and the second bearing housing 32 of each bearing housing assembly 3. The adjusting device 4 includes two adjusting assemblies 41 arranged at intervals in the axial direction of the first roll 1. The size of the adjusting assembly 41 in the arrangement direction of the first roll 1 and the second roll 2 is adjustable. A driving device for driving the extrusion of the first roll 1 and / or the second roll 2 is located between the two adjusting assemblies 41. It can be understood that when the driving device includes a first driving device and the first driving device includes a first oil cylinder, along the axial direction of the first roll 1, the first oil cylinder is located between the two adjusting assemblies 41 of the adjusting device 4 on the same side; when the driving device includes a second driving device and the second driving device includes a second oil cylinder, along the axial direction of the second roll 2, the second oil cylinder is located between the two adjusting assemblies 41 of the adjusting device 4 on the same side.

[0067] Wherein, the distance between the two adjusting assemblies 41 of the same adjusting device 4 in the axial direction of the first roll 1 or the second roll 2 can be adjusted according to the widths of the first bearing housing 31 and the second bearing housing 32, and as the distance between the two adjusting assemblies 41 increases, the effect of controlling the bending moment of the first roll 1 and the second roll 2 becomes more obvious.

[0068] In the initial state after installation, the positions of the multiple adjusting assemblies 41 are the same and their sizes in the arrangement direction of the first roll 1 and the second roll 2 are the same. During the operation of the battery pole piece rolling equipment 100, the first roll 1 or the second roll 2 will undergo deflection deformation. The thickness measuring device can measure the thickness of the battery pole piece, and the thickness measuring device can feed back the thickness data of the battery pole piece to the PLC (Programmable Logic Controller) of the battery pole piece rolling equipment 100. When the thickness meets the process requirements, continuous production is carried out; when the thickness does not meet the process requirements, the PLC processes the relevant information. For example, if the middle of the battery pole piece is thick and the two sides are thin, corresponding to the battery pole piece rolling equipment 100, it is judged that the first roll 1 has a concave deformation, the middle part of the first roll 1 is lower than the two sides, and the roll gap between the first roll 1 and the second roll 2 is larger in the middle and smaller at the two sides. It is possible to control the sizes of the two adjusting assemblies 41 with the farthest distance between the two bearing housing assemblies 3 in the arrangement direction of the first roll 1 and the second roll 2 to increase. Under the action of the first oil cylinder of the first driving device, the first bearing housing 31 takes the adjusting assemblies 41 with increased sizes, that is, the two adjusting assemblies 41 with the farthest distance, as the fulcrums, so that the middle part of the first roll 1 deforms towards the second roll 2, offsetting the deflection deformation of the first roll 1, and making the size of the roll gap between the first roll 1 and the second roll 2 tend to be consistent along the axial direction of the first roll 1, thereby adjusting the thickness consistency of the battery pole piece in the transverse direction and meeting the production process requirements.

[0069] For another example, if the battery electrode tab is thinner in the middle and thicker at both ends, corresponding to the battery electrode tab rolling equipment 100, it is determined that the first rolling roll 1 has a convex deformation, the middle part of the first rolling roll 1 is higher than both sides, and the roll gap between the first rolling roll 1 and the second rolling roll 2 is smaller in the middle and larger at both sides. The dimensions of the two adjusting components 41 with the closest distance between the two bearing seat assemblies 3 in the arrangement direction of the first rolling roll 1 and the second rolling roll 2 can be controlled to increase. Under the action of the first oil cylinder of the first driving device, the first bearing seat 31 takes the adjusting components 41 with increased dimensions, that is, the two adjusting components 41 with the closest distance, as the fulcrum, so that the two end parts of the first rolling roll 1 deform towards the second rolling roll 2, offsetting the deflection deformation of the first rolling roll 1, making the dimensions of the roll gap between the first rolling roll 1 and the second rolling roll 2 tend to be consistent along the axial direction of the first rolling roll 1, adjusting the thickness consistency of the battery electrode tab in the transverse direction, and meeting the production process requirements.

[0070] For another example, if the battery electrode tab is thicker in the middle and thinner at both ends, corresponding to the battery electrode tab rolling equipment 100, it is determined that the second rolling roll 2 has a concave deformation, the middle part of the second rolling roll 2 is lower than both sides, and the roll gap between the first rolling roll 1 and the second rolling roll 2 is larger in the middle and smaller at both sides. The dimensions of the two adjusting components 41 with the farthest distance between the two bearing seat assemblies 3 in the arrangement direction of the first rolling roll 1 and the second rolling roll 2 can be controlled to increase. Under the action of the second oil cylinder of the second driving device, the second bearing seat 32 takes the adjusting components 41 with increased dimensions, that is, the two adjusting components 41 with the farthest distance, as the fulcrum, so that the middle part of the second rolling roll 2 deforms towards the first rolling roll 1, offsetting the deflection deformation of the second rolling roll 2, or under the action of the first oil cylinder of the first driving device, the first bearing seat 31 takes the adjusting components 41 with increased dimensions, that is, the two adjusting components 41 with the farthest distance, as the fulcrum, so that the middle part of the first rolling roll 1 deforms towards the second rolling roll 2, offsetting the deflection deformation of the second rolling roll 2, making the dimensions of the roll gap between the first rolling roll 1 and the second rolling roll 2 tend to be consistent along the axial direction of the first rolling roll 1, thereby adjusting the thickness consistency of the battery electrode tab in the transverse direction and meeting the production process requirements.

[0071] For another example, if the middle of the battery electrode sheet is thin and the two sides are thick, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the second rolling roll 2 has a convex deformation, the middle part of the second rolling roll 2 is higher than the two sides, and the roll gap between the first rolling roll 1 and the second rolling roll 2 is smaller in the middle and larger at the two sides. It is possible to control the dimensions of the two adjustment components 41 with the closest distance between the two bearing seat assemblies 3 in the arrangement direction of the first rolling roll 1 and the second rolling roll 2 to increase. Under the action of the second oil cylinder of the second driving device, the second bearing seat 32 takes the adjustment components 41 with increased dimensions, that is, the two adjustment components 41 with the closest distance, as the fulcrum, so that the two end parts of the second rolling roll 2 deform towards the first rolling roll 1, canceling the deflection deformation of the second rolling roll 2. Or under the action of the first oil cylinder of the first driving device, the first bearing seat 31 takes the adjustment components 41 with increased dimensions, that is, the two adjustment components 41 with the closest distance, as the fulcrum, so that the two end parts of the first rolling roll 1 deform towards the second rolling roll 2, canceling the deflection deformation of the second rolling roll 2, making the dimensions of the roll gap between the first rolling roll 1 and the second rolling roll 2 tend to be consistent along the axial direction of the first rolling roll 1, adjusting the thickness consistency of the battery electrode sheet in the transverse direction, and meeting the production process requirements.

[0072] During the production process of the battery electrode sheet, due to the service life of the surface coatings of the first rolling roll 1 and the second rolling roll 2, it is necessary to replace the first rolling roll 1 and the second rolling roll 2 at a certain frequency. Since the adjustment device 4 is located between the first bearing seat 31 and the second bearing seat 32 in this application, when replacing the first rolling roll 1 and the second rolling roll 2, after removing the first bearing seat 31, the first rolling roll 1 is moved along the axial direction of the first rolling roll 1 to disassemble the first rolling roll 1, and after removing the second bearing seat 32, the second rolling roll 2 is moved along the axial direction of the second rolling roll 2 to disassemble the second rolling roll 2. The replacement period is short and the difficulty is small.

[0073] In Figure 1 the example shown, the axes of the first rolling roll 1 and the second rolling roll 2 extend in the horizontal direction, the first rolling roll 1 and the second rolling roll 2 are arranged in the up and down direction, and the first rolling roll 1 is located below the second rolling roll 2. Correspondingly, the height of the adjustment component 41 in the up and down direction (such as Figure 1 the up and down direction shown) is adjustable.

[0074] In the above technical solution, adjustment devices 4 are respectively arranged between the first bearing seats 31 at both ends of the first roll 1 and the second bearing seats 32 at both ends of the second roll 2. The adjustment device 4 includes two adjustment components 41 arranged in the axial direction of the first roll 1 or the second roll 2, and the size of the adjustment component 41 in the arrangement direction of the first roll 1 and the second roll 2 is adjustable. When the first roll 1 or the second roll 2 undergoes deflection deformation, the size of some adjustment components 41 in the arrangement direction of the first roll 1 and the second roll 2 can be adjusted to serve as a fulcrum, and under the action of the first driving device for driving the first roll 1 or the second driving device for driving the second roll 2, the first roll 1 or the second roll 2 is deformed to offset the deflection deformation generated by the first roll 1 and the second roll 2, so that the size of the roll gap between the first roll 1 and the second roll 2 in the axial direction of the first roll 1 tends to be consistent, thereby adjusting the thickness consistency of the battery pole piece in the transverse direction and meeting the production process requirements. In addition, the replacement cycle of the first roll 1 and the second roll 2 in this application is short and the difficulty is small.

[0075] In some embodiments, referring to Figure 2 and Figure 3 , the adjustment component 41 includes a first wedge 411 and a second wedge 412. The first wedge 411 and the second wedge 412 are arranged in the arrangement direction of the first roll 1 and the second roll 2, and the inclined surfaces of the first wedge 411 and the second wedge 412 are mutually attached.

[0076] In this application, by changing the relative positions of the first wedge 411 and the second wedge 412, the size of the first wedge 411 and the second wedge 412 in the arrangement direction of the first roll 1 and the second roll 2 can be adjusted. For example, in the example shown in Figure 2 and Figure 3 , the first wedge 411 and the second wedge 412 are arranged in the up-down direction, the first wedge 411 is located below the second wedge 412, the upper surface of the first wedge 411 and the lower surface of the second wedge 412 are inclined surfaces and are mutually attached, the heights of the first wedge 411 and the second wedge 412 in the A direction (as shown in Figure 3 ) are different, the A direction is parallel to the horizontal plane, and when the first wedge 411 and the second wedge 412 move relative to each other in the A direction, the total height of the first wedge 411 and the second wedge 412 in the up-down direction can be adjusted.

[0077] In the related art, by setting bending cylinders, the bending cylinder force is used to offset the roll deflection deformation, and 4 bending cylinder groups need to be configured for the bending cylinder device, and a complex hydraulic system is required to control the bending cylinder force. When replacing the first roll and the second roll, the cycle is long and the difficulty is large.

[0078] The adjustment component 41 of the present application is located between the first bearing block 31 and the second bearing block 32. When replacing the first roll 1 and the second roll 2, after removing the first bearing block 31, the first roll 1 is moved along the axial direction of the first roll 1 to disassemble the first roll 1, and after removing the second bearing block 32, the second roll 2 is moved along the axial direction of the second roll 2 to disassemble the second roll 2. The present application cancels the bending cylinder component and the corresponding hydraulic control system, significantly shortening the time for replacing the first roll 1 and the second roll 2, and reducing the corresponding lifting structure during the process, not only improving the inherent safety of the equipment but also reducing the workload of the corresponding staff.

[0079] In the above technical solution, a first wedge 411 and a second wedge 412 are arranged in the adjustment component 41. The first wedge 411 and the second wedge 412 are arranged along the arrangement direction of the first roll 1 and the second roll 2. The inclined surfaces of the first wedge 411 and the second wedge 412 are mutually attached. By adjusting the relative positions of the first wedge 411 and the second wedge 412, the dimensions of the first wedge 411 and the second wedge 412 in the arrangement direction of the first roll 1 and the second roll 2 can be adjusted. The structure is simple and the operation is convenient. In addition, the replacement cycle of the first roll 1 and the second roll 2 in the present application is short and the difficulty is small.

[0080] In some embodiments, referring to Figures 1-3 , the first wedge 411 is movably arranged on the first bearing block 31, and the moving direction of the first wedge 411 (such as Figure 2 the A direction shown) is perpendicular to the axis of the first roll 1, and the second wedge 412 is fixed on the second bearing block 32.

[0081] The second wedge 412 is fixed on the second bearing block 32, which can realize the fixation of the second wedge 412, improve the reliability of the fixation of the second wedge 412, and improve the adjustment accuracy of the adjustment component 41 for the deflection deformation of the first roll 1 and the second roll 2. The first wedge 411 is arranged on the first bearing block 31, which can realize the fixation of the first wedge 411, improve the reliability of the fixation of the first wedge 411, and improve the adjustment accuracy of the adjustment component 41 for the deflection deformation of the first roll 1 and the second roll 2.

[0082] The first wedge 411 is movably arranged on the first bearing block 31, which is convenient for realizing the relative movement of the first wedge 411 and the second wedge 412 through the movement of the first wedge 411, thereby facilitating the adjustment of the dimensions of the adjustment component 41 along the arrangement direction of the first roll 1 and the second roll 2.

[0083] Of course, the present utility model is not limited to this. The first wedge 411 can be fixed to the first bearing block 31, and the second wedge 412 can be movably arranged on the second bearing block 32. The relative movement between the first wedge 411 and the second wedge 412 is achieved through the movement of the second wedge 412, so as to adjust the dimension of the adjusting assembly 41 along the arrangement direction of the first roll 1 and the second roll 2. Alternatively, the first wedge 411 is movably arranged on the first bearing block 31, and at the same time, the second wedge 412 can also be movably arranged on the second bearing block 32. During adjustment, only the first wedge 411 can be moved, or only the second wedge 412 can be moved, or both the first wedge 411 and the second wedge 412 can be moved simultaneously.

[0084] In the above technical solution, the second wedge 412 is fixed to the second bearing block 32, and the first wedge 411 is movably arranged on the first bearing block 31, which is convenient for fixing the adjusting assembly 41 and improves the adjustment accuracy of the adjusting assembly 41 for the deflection deformation of the first roll 1 and the second roll 2. At the same time, the relative movement between the first wedge 411 and the second wedge 412 is realized through the movement of the first wedge 411, so as to facilitate the adjustment of the dimension of the adjusting assembly 41 along the arrangement direction of the first roll 1 and the second roll 2, with a simple structure and convenient operation.

[0085] In some embodiments, referring to Figure 2 and Figure 3 as shown, the adjusting assembly 41 further includes a driving assembly 413. The driving assembly 413 is arranged on the first bearing block 31 and is used to drive the first wedge 411 to move.

[0086] The driving assembly 413 can provide power for the movement of the first wedge 411. The driving assembly 413 can be connected to the PLC. When the PLC determines that the first roll 1 or the second roll 2 has deflection deformation, it can control the driving assembly 413 of the corresponding adjusting assembly 41 to work, so as to control the movement of the first wedge 411, and thus adjust the dimension of the adjusting assembly 41 according to the form of the deformation.

[0087] In the above technical solution, by setting the driving assembly 413 to drive the first wedge 411 to move, the automation of the movement of the first wedge 411 can be realized, and the automation of the adjustment of the battery pole piece rolling equipment 100 can be realized, so as to better adjust in real time according to the thickness of the battery pole piece and improve the problem of poor thickness consistency of the battery pole piece.

[0088] In some embodiments, referring to Figure 2 and Figure 3As shown in the figure, the driving assembly 413 includes a driving motor 4131 and a transmission mechanism 4132. The driving motor 4131 is arranged on the first bearing block 31. The transmission mechanism 4132 is in transmission connection with the output shaft of the driving motor 4131 and the first wedge 411, and is used to convert the rotation of the driving motor 4131 into the movement of the first wedge 411.

[0089] The driving motor 4131 can be a servo motor. The driving motor 4131 can precisely adjust the position of the first wedge 411 to meet the process requirements of the deflection deformation of the first roll 1 or the second roll 2 under different conditions. The transmission mechanism 4132 can convert the rotation of the driving motor 4131 into the movement of the first wedge 411, so that the driving motor 4131 can better drive the first wedge 411 to move.

[0090] Among them, the transmission mechanism 4132 can be a lead screw mechanism. The transmission mechanism 4132 includes a nut member and a lead screw. One end of the lead screw is connected to the first wedge 411 and extends along the movement direction of the first wedge 411. The driving motor 4131 is used to drive the nut member to rotate. The nut member is sleeved outside the lead screw and is in threaded cooperation with the lead screw. When the driving motor 4131 drives the nut member to rotate, the nut member drives the lead screw to move, thereby driving the first wedge 411 to move.

[0091] Of course, the present invention is not limited to this. The transmission mechanism 4132 can also be a gear-rack structure. The transmission mechanism 4132 includes a driving gear and a rack. One end of the rack is connected to the first wedge 411 and extends along the movement direction of the first wedge 411. The driving motor 4131 is used to drive the driving gear to rotate. The driving gear is meshed with the rack. When the driving motor 4131 drives the driving gear to rotate, the gear drives the rack to move, thereby driving the first wedge 411 to move.

[0092] In the above technical solution, by arranging the driving motor 4131 and the transmission mechanism 4132 in the driving assembly 413, the accuracy of the movement of the first wedge 411 can be improved by the driving motor 4131 to meet the process requirements of the deflection deformation of the first roll 1 or the second roll 2 under different conditions. At the same time, the rotation of the driving motor 4131 is converted into the movement of the first wedge 411 by the transmission mechanism 4132, which is convenient for the driving motor 4131 to drive the first wedge 411 to move.

[0093] In some embodiments, referring to Figure 2 and Figure 3 as shown in the figure, the driving assembly 413 further includes a reduction mechanism 4133. The input end of the reduction mechanism 4133 is connected to the output shaft of the driving motor 4131, and the output end of the reduction mechanism 4133 is in transmission connection with the transmission mechanism 4132.

[0094] The rotational speed of the driving motor 4131 is relatively high. A speed reduction mechanism 4133 is arranged between the driving motor 4131 and the transmission mechanism 4132, which can reduce the rotational speed transmitted to the transmission mechanism 4132, thereby precisely adjusting the position of the first wedge 411 to meet the process requirements of the deflection deformation of the first roll 1 or the second roll 2 under different conditions.

[0095] Among them, the speed reduction mechanism 4133 can be a gear speed reduction mechanism. The gear speed reduction mechanism includes an input gear and an output gear. The input gear is connected to the output shaft of the driving motor 4131, and the output gear is in transmission connection with the transmission mechanism 4132.

[0096] In the above technical solution, by arranging the speed reduction mechanism 4133, the rotational speed transmitted from the driving motor 4131 to the transmission mechanism 4132 can be reduced, thereby reducing the moving speed of the first wedge 411, and further precisely adjusting the position of the first wedge 411 to meet the process requirements of the deflection deformation of the first roll 1 or the second roll 2 under different conditions.

[0097] In some embodiments, a limiting groove 312 is provided on the first bearing block 31. The limiting groove 312 extends along the moving direction of the first wedge 411, and the first wedge 411 is movably arranged in the limiting groove 312.

[0098] The limiting groove 312 can limit the moving direction of the first wedge 411, making the movement of the first wedge 411 more reliable, so that the cooperation between the first wedge 411 and the second wedge 412 is more reliable, and further making the adjustment assembly 41 more reliable, reducing the situation that the fulcrum is unstable due to the unreliability of the adjustment assembly 41 and the deflection deformation of the first roll 1 and the second roll 2 cannot be adjusted.

[0099] In the above technical solution, by arranging the limiting groove 312, the first wedge 411 can be limited, making the moving direction of the first wedge 411 more accurate, the cooperation with the second wedge 412 more reliable, improving the reliability of the adjustment assembly 41, and reducing the situation that the fulcrum is unstable due to the unreliability of the adjustment assembly 41 and the deflection deformation of the first roll 1 and the second roll 2 cannot be adjusted.

[0100] In some embodiments, referring to Figure 2 and Figure 3 as shown, on both sides of each first wedge 411 along the axial direction of the first roll 1, there are wedge retaining strips 311. The wedge retaining strips 311 are arranged on the first bearing block 31 and extend along the moving direction of the first wedge 411. The limiting groove 312 is defined between the two wedge retaining strips 311.

[0101] The wedge iron bar 311 protrudes from the surface of the first bearing block 31. The wedge iron bar 311 can be welded to the first bearing block 31. A limiting groove 312 is defined between two wedge iron bars 311. The first wedge iron 411 is movably arranged between the two wedge iron bars 311. There are two adjusting components 41 provided between the first bearing block 31 and the second bearing block 32 on the same side. Four wedge iron bars 311 can be provided. The four wedge iron bars 311 are divided into two groups. Each group has two wedge iron bars 311 and the two wedge iron bars 311 in each group define a limiting groove 312. The four wedge iron bars 311 define two limiting grooves 312. The two adjusting components 41 of the adjusting device 4 are respectively movably arranged in the two limiting grooves 312.

[0102] Of course, the present invention is not limited to this. The limiting groove 312 can also be formed by the surface of the first bearing block 31 being concave. For example, the limiting groove 312 can be cut out on the surface of the first bearing block 31 or when the first bearing block 31 is injection molded, a concave limiting groove 312 is injection molded on the surface of the first bearing block 31 at the same time.

[0103] In the above technical solution, by arranging a plurality of wedge iron bars 311 on the surface of the first bearing block 31, the plurality of wedge iron bars 311 define two limiting grooves 312, which facilitates the setting of the limiting grooves 312 and can reduce the damage to the structure of the first bearing block 31 itself. On the basis of improving the structural strength of the first bearing block 31, it is convenient for the movement of the first wedge iron 411.

[0104] In some embodiments, referring to Figure 3 , the adjusting component 41 further includes a limiting member 414. The limiting member 414 is used to limit the relative positions of the first wedge iron 411 and the second wedge iron 412.

[0105] During the movement of the first wedge iron 411, the first wedge iron 411 cannot move infinitely in one direction, reducing the problem of the first wedge iron 411 and the second wedge iron 412 being separated or the adjusting component 41 being damaged. In the present application, the limiting member 414 is provided and the relative positions of the first wedge iron 411 and the second wedge iron 412 can be limited by the limiting member 414, that is, the moving displacement of the first wedge iron 411 can be limited, thereby reducing the risk of damage to the adjusting component 41.

[0106] In the above technical solution, by providing the limiting member 414, the relative positions of the first wedge iron 411 and the second wedge iron 412 can be limited, reducing the problem of the first wedge iron 411 and the second wedge iron 412 being separated from each other or the adjusting component 41 being damaged due to the large moving displacement of the first wedge iron 411.

[0107] In some embodiments, referring to Figure 3, the limiting member 414 includes an optoelectronic component and a shielding member 4144. The optoelectronic component includes a first optoelectronic switch 4142 and a second optoelectronic switch 4143. The first optoelectronic switch 4142 and the second optoelectronic switch 4143 are spaced apart along the moving direction of the first wedge 411. The shielding member 4144 is used to cooperate with the first optoelectronic switch 4142 or the second optoelectronic switch 4143. The shielding member 4144 moves relatively between the first optoelectronic switch 4142 and the second optoelectronic switch 4143. One of the optoelectronic component and the shielding member 4144 is provided on the first wedge 411, and the other is fixed relative to the first bearing block 31.

[0108] The shielding member 4144 can be provided on the first wedge 411. At this time, the optoelectronic component is fixedly arranged relative to the first bearing block 31. When the optoelectronic component is fixedly arranged relative to the first bearing block 31, the optoelectronic component can be directly provided on the first bearing block 31, or on the second wedge 412, or on the wedge bar 311; the optoelectronic component can be provided on the first wedge 411. At this time, the shielding member 4144 can be fixedly arranged relative to the first bearing block 31. When the shielding member 4144 is fixedly arranged relative to the first bearing block 31, the optoelectronic component can be directly provided on the first bearing block 31, or on the second wedge 412, or on the wedge bar 311.

[0109] In Figure 3 In the illustrated example, the shielding member 4144 is provided on the first wedge 411, and the optoelectronic component is fixed relative to the first bearing block 31. Among them, the optoelectronic component is provided on the wedge bar 311. The first optoelectronic switch 4142 and the second optoelectronic switch 4143 are spaced apart along the moving direction of the first wedge 411 on the wedge bar 311, and the shielding member 4144 is located between the first optoelectronic switch 4142 and the second optoelectronic switch 4143.

[0110] The first optoelectronic switch 4142 and the second optoelectronic switch 4143 can be used to detect the shielding member 4144. During the movement of the first wedge 411, when the first optoelectronic switch 4142 detects the shielding member 4144, it indicates that the first wedge 411 moves to the limit position in one direction. When the second optoelectronic switch 4143 detects the shielding member 4144, it indicates that the first wedge 411 moves to the limit position in the other direction. The first optoelectronic switch 4142 and the second optoelectronic switch 4143 can be connected to the PLC. The first optoelectronic switch 4142 and the second optoelectronic switch 4143 can transmit the detected information to the PLC. The PLC can control the drive motor 4131 to stop working when the first wedge 411 moves to the two limit positions, so that the first wedge 411 stops moving.

[0111] The first photoelectric switch 4142 and the second photoelectric switch 4143 can control the movement of the shielding member 4144 between the first photoelectric switch 4142 and the second photoelectric switch 4143, thereby limiting the movement displacement range of the first wedge 411, reducing the problem that the first wedge 411 and the second wedge 412 are separated from each other or the adjustment assembly 41 is damaged due to the large movement displacement of the first wedge 411, and further reducing the possibility of equipment damage and safety accidents under pressure.

[0112] Among them, the shielding member 4144 is fixed relative to the first bearing seat 31. When the photoelectric component is arranged on the first wedge 411, the principle is the same as above and will not be elaborated here.

[0113] In the above technical solution, by setting the photoelectric component and the shielding member 4144, one of the photoelectric component and the shielding member 4144 is arranged on the first wedge 411, and the other is fixed relative to the first bearing seat 31, so that there is relative movement between the photoelectric component and the shielding member 4144. In addition, the photoelectric component includes a first photoelectric switch 4142 and a second photoelectric switch 4143 arranged at intervals along the moving direction of the first wedge 411. The cooperation between the first photoelectric switch 4142 and the second photoelectric switch 4143 and the shielding member 4144 can limit two limit positions of the movement of the first wedge 411, thereby limiting the movement displacement range of the first wedge 411, and reducing the problem that the first wedge 411 and the second wedge 412 are separated from each other or the adjustment assembly 41 is damaged due to the large movement displacement of the first wedge 411.

[0114] In some embodiments, the adjustment assembly 41 further includes a detection element 415 for detecting whether the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact.

[0115] When the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact with each other, the size of the adjustment assembly 41 in the arrangement direction of the first roller 1 and the second roller 2 is relatively stable, so that the distance between the first roller 1 and the second roller 2 can be relatively stable, which is beneficial to realizing the consistency of the thickness of the battery electrode sheet.

[0116] The detection element 415 can send the detection information to the PLC. When it is detected that the inclined surfaces of the first wedge 411 and the second wedge 412 are not in contact, the PLC will send a reminder signal or actively control the driving motor 4131 to drive the first wedge 411 to move, so that the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact, which can reduce the problem of thickness fluctuation of the battery electrode sheet caused by the unstable distance between the first roller 1 and the second roller 2 due to the non-contact between the first wedge 411 and the second wedge 412 during the production process.

[0117] In the above technical solution, by providing a detection element 415 to detect whether the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact, the relative positions of the first wedge 411 and the second wedge 412 can be adjusted in a timely manner, so that the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact, reducing the problem of thickness fluctuations of the battery electrode due to the unstable distance between the first roll 1 and the second roll 2 caused by the non-contact between the first wedge 411 and the second wedge 412 during the production process.

[0118] In some embodiments, referring to Figure 3 and Figure 4 , the detection element 415 includes a proximity sensor 4151 and a mating member 4152 that cooperates with the proximity sensor 4151. The proximity sensor 4151 is provided on one of the first wedge 411 and the second wedge 412, and the mating member 4152 is provided on the other of the first wedge 411 and the second wedge 412.

[0119] The proximity sensor 4151 and the mating member 4152 are arranged in the arrangement direction of the first wedge 411 and the second wedge 412. When the proximity sensor 4151 detects that the mating member 4152 is approaching, it indicates that the inclined surfaces of the first wedge 411 and the second wedge 412 are in good contact. When the proximity sensor 4151 fails to detect the mating member 4152, it indicates that the inclined surfaces of the first wedge 411 and the second wedge 412 are separated and not in contact. At this time, adjustment is required in a timely manner so that the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact, reducing the problem of thickness fluctuations of the battery electrode due to the unstable distance between the first roll 1 and the second roll 2 caused by the non-contact between the first wedge 411 and the second wedge 412 during the production process.

[0120] Of course, the detection element 415 can also be a pressure sensor. The pressure sensor can be provided between the inclined surfaces of the first wedge 411 and the second wedge 412. When the pressure sensor detects the extrusion force between the first wedge 411 and the second wedge 412, it indicates that the inclined surfaces of the first wedge 411 and the second wedge 412 are in good contact. When the pressure sensor fails to detect the pressure, it indicates that the inclined surfaces of the first wedge 411 and the second wedge 412 are separated and not in contact. At this time, adjustment is required in a timely manner so that the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact.

[0121] In the above technical solution, by providing the detection element 415 as the proximity sensor 4151 and the mating member 4152, not only can it effectively detect whether the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact, but also it can reduce the influence on the relative movement of the first wedge 411 and the second wedge 412.

[0122] In some embodiments, the first wedge 411 and the second wedge 412 have the same structure. The friction coefficient between the inclined surfaces of the first wedge 411 and the second wedge 412 is A, and the inclination angle of the inclined surfaces of the first wedge 411 and the second wedge 412 is α, and it satisfies: tanα < A.

[0123] Frictional self-locking refers to a device or principle that utilizes friction to independently achieve the self-locking function in a mechanical system. Its main function is to enable the mechanical system to reach a stable equilibrium state under the action of external forces and prevent accidental movement or out-of-control of the system. The principle of frictional self-locking is based on the existence and action of friction. When there is a relative movement or inclination relationship between two objects, the frictional force will hinder this movement or inclination and keep a certain relative position between the two objects. "Frictional self-locking" is achieved by adjusting the pressure and friction coefficient between the two objects so that the frictional force is greater than the external force, thereby realizing the self-locking function.

[0124] When the inclination angle α of the inclined surfaces of the first wedge 411 and the second wedge 412 satisfies tanα < A, the frictional force between the inclined surfaces of the first wedge 411 and the second wedge 412 can be made greater than the external force, realizing the frictional self-locking of the first wedge 411 and the second wedge 412, and reducing the problem of relative slip between the first wedge 411 and the second wedge 412, which may cause equipment safety accidents.

[0125] For example, as Figure 3 shown, the second wedge 412 is located above the first wedge 411. The first wedge 411 and the second wedge 412 can be made of Q235 steel. For the first wedge 411 and the second wedge 412 themselves, assuming the friction coefficient of Q235 steel is 0.5, when the inclination angle tanα of the inclined surface of the first wedge 411 < 0.5, the maximum slope of the first wedge 411 itself is calculated to be 27°, that is, the maximum slope of the wedge cannot exceed 27°. When exceeding the maximum slope, the first wedge 411 and the second wedge 412 will have uncontrollable relative slip under the vertical pressure, causing equipment safety accidents.

[0126] In the above technical solution, by making the inclination angle α of the inclined surfaces of the first wedge 411 and the second wedge 412 satisfy tanα < A, where A is the friction coefficient between the inclined surfaces of the first wedge 411 and the second wedge 412, the frictional self-locking of the first wedge 411 and the second wedge 412 can be realized, and the problem of relative slip between the first wedge 411 and the second wedge 412, which may cause equipment safety accidents, can be reduced.

[0127] In some embodiments, the battery electrode rolling equipment 100 further includes a positioning assembly, which is arranged on the first bearing seat 31 and / or the second bearing seat 32. The positioning assembly is used to position a plurality of adjustment assemblies 41 on the same straight line extending along the axis direction of the first roll 1.

[0128] The positioning component can make the positions of all the adjusting components 41 consistent, digitalize the positions of the adjusting components 41, and improve the control ability to counteract deflection deformation. In addition, the positioning component cooperates with a high-precision servo motor to further achieve fine control and further improve the control ability to counteract deflection deformation.

[0129] The positioning component is arranged on the first bearing block 31 and / or the second bearing block 32. It can be understood that the positioning component can be arranged only on the first bearing block 31, or only on the second bearing block 32, or on both the first bearing block 31 and the second bearing block 32 at the same time, thereby improving the flexibility of the installation position of the positioning component.

[0130] In the above technical solution, by arranging the positioning component, the positioning component can be used to position the adjusting components 41, so that multiple adjusting components 41 are positioned on the same straight line extending along the axis direction of the first roll 1, making the positions of all the adjusting components 41 consistent, digitalizing the positions of the adjusting components 41, and improving the control ability to counteract deflection deformation.

[0131] In some embodiments, referring to Figure 3 , the positioning component includes a plurality of positioning members 5. The plurality of positioning members 5 are located on the same straight line extending along the axis direction of the first roll 1. A positioning member 5 is arranged on one side of each adjusting component 41 along the first direction (such as Figure 2 the A direction shown). The first direction is perpendicular to the axial direction of the first roll 1 and the arrangement direction of the first roll 1 and the second roll 2.

[0132] The plurality of positioning members 5 position the adjusting components 41 on one side of the plurality of adjusting components 41 along the first direction, which can not only improve the reliability of positioning the adjusting components 41, but also simplify the structure of the battery pole piece rolling equipment 100.

[0133] For example, in the example shown in Figure 3 , the positioning member 5 is a microswitch. Four positioning members 5 are arranged on one side of each adjusting component 41 along the first direction. Two of the positioning members 5 are arranged opposite to the first wedge 411 and are arranged on the first bearing block 31 for positioning the first wedge 411. The two positioning members 5 for positioning the first wedge 411 are spaced apart in the axial direction of the first roll 1; the other two positioning members 5 are arranged opposite to the second wedge 412 and are arranged on the second bearing block 32 for positioning the second wedge 412. The two positioning members 5 for positioning the second wedge 412 are spaced apart in the axial direction of the first roll 1. At the same time, the two positioning members 5 for positioning the first wedge 411 and the two positioning members 5 for positioning the second wedge 412 are arranged opposite to each other in the arrangement direction of the first wedge 411 and the second wedge 412 respectively.

[0134] Of course, the present utility model is not limited thereto. The positioning member 5 can also be a positioning post. One or more positioning posts can be provided on one side of each adjusting assembly 41 along the first direction. The positioning posts can be provided on the first bearing block 31 or the second bearing block 32. The positioning posts extend along the arrangement direction of the first wedge 411 and the second wedge 412. The positioning posts can face both the first wedge 411 and the second wedge 412 simultaneously, and are used to position the first wedge 411 and the second wedge 412. Of course, when there are multiple positioning posts, some positioning posts can be provided on the first bearing block 31 and face only the first wedge 411 for positioning the first wedge 411, and some positioning posts are provided on the second bearing block 32 and face only the second wedge 412 for positioning the second wedge 412.

[0135] In addition, it should be noted that in the first direction, the positioning member 5 is at least spaced from the first wedge 411 to facilitate the movement of the first wedge 411 along the first direction.

[0136] In the above technical solution, by providing multiple positioning members 5 for the positioning assembly, and providing a positioning member 5 on one side of each adjusting assembly 41 along the first direction, and the multiple positioning members 5 are located on the same straight line extending along the axis direction of the first roll 1, not only can the positioning reliability of the adjusting assembly 41 be improved, but also the structure of the battery pole piece rolling equipment 100 can be simplified.

[0137] Next, refer to Figures 1-4 to describe the battery pole piece pressing equipment according to some embodiments of the present utility model.

[0138] Refer to Figures 1-4 , in this embodiment, the battery pole piece rolling equipment 100 includes: a frame, a first roll 1, a second roll 2, a bearing block assembly 3, and an adjusting device 4.

[0139] The first roll 1 and the second roll 2 are provided on the frame. The first roll 1 and the second roll 2 are arranged in parallel, and the axes of the first roll 1 and the second roll 2 both extend along the horizontal direction. The first roll 1 is located below the second roll 2. There is a roll gap between the first roll 1 and the second roll 2, and the battery pole piece can be located in the roll gap. The first roll 1 and the second roll 2 can rotate respectively around their central axes, and the rotation directions of the first roll 1 and the second roll 2 can be opposite. During the rotation of the first roll 1 and the second roll 2, the battery pole piece is driven to move forward.

[0140] The bearing seat assemblies 3 are provided on the frame and there are two of them. The two bearing seat assemblies 3 are arranged at intervals along the axial direction of the first roller 1 or the second roller 2. Each bearing seat assembly 3 includes a first bearing seat 31 and a second bearing seat 32. The first bearing seat 31 is located below the second bearing seat 32. The two ends of the first roller 1 are respectively rotatably arranged in the two first bearing seats 31 of the two bearing seat assemblies 3, and the two ends of the second roller 2 are respectively rotatably arranged in the two second bearing seats 32 of the two bearing seat assemblies 3, which facilitates the rotation of the first roller 1 and the second roller 2.

[0141] The driving device for driving the first roller 1 and the second roller 2 to perform extrusion is provided on the frame. The driving device may include a first driving device. The first driving device may be provided on the lower side of the first bearing seat 31. The first driving device is used to drive the first roller 1 to move upward. The first driving device may include a first oil cylinder. The first oil cylinder may extend in the vertical direction. There are two first oil cylinders. The two first oil cylinders are provided on the frame. The two first oil cylinders are respectively connected to the two first bearing seats 31 and are used to push the two first bearing seats 31 to move upward, thereby driving the first roller 1 to move upward to realize the extrusion of the battery pole piece.

[0142] The driving device may further include a second driving device. The second driving device may be provided on the upper side of the second bearing seat 32. The second driving device is used to drive the second roller 2 to move downward. The second driving device may include a second oil cylinder. The second oil cylinder may extend in the vertical direction. There are two second oil cylinders. The two second oil cylinders are provided on the frame. The two second oil cylinders are respectively connected to the two second bearing seats 32 and are used to push the two second bearing seats 32 to move towards the first bearing seat 31, thereby driving the second roller 2 to move towards the first roller 1 to realize the extrusion of the battery pole piece.

[0143] An adjusting device 4 is provided between the first bearing seat 31 and the second bearing seat 32 of each bearing seat assembly 3. The adjusting device 4 includes two adjusting components 41 arranged at intervals along the axial direction of the first roller 1. The adjusting components 41 are adjustable in height in the vertical direction. Along the axial direction of the first roller 1, the first oil cylinder is located between the two adjusting components 41 of the adjusting device 4 on the same side, and the second oil cylinder is located between the two adjusting components 41 of the adjusting device 4 on the same side.

[0144] The adjusting component 41 includes a first wedge 411, a second wedge 412, a driving component 413, a limiting member 414, and a detecting element 415. The first wedge 411 is located below the second wedge 412. The first wedge 411 is movably arranged on the first bearing seat 31. The moving direction of the first wedge 411 (such as Figure 2The said A direction) is perpendicular to the axis of the first rolling mill 1. The second wedge 412 is fixed on the second bearing block 32. The inclined surfaces of the first wedge 411 and the second wedge 412 are in mutual contact. By moving the first wedge 411, the relative movement between the first wedge 411 and the second wedge 412 is realized, thus facilitating the adjustment of the height of the adjustment assembly 41 in the up and down direction.

[0145] The first wedge 411 and the second wedge 412 have the same structure and are both made of Q235 steel. The friction coefficient between the inclined surfaces of the first wedge 411 and the second wedge 412 is 0.5. The inclination angle of the inclined surfaces of the first wedge 411 and the second wedge 412 is α, and it satisfies: tanα < 0.5, which can make the frictional force between the inclined surfaces of the first wedge 411 and the second wedge 412 greater than the external force, realizing the friction self-locking of the first wedge 411 and the second wedge 412, and reducing the problem of relative slip between the first wedge 411 and the second wedge 412, which may cause equipment safety accidents.

[0146] The driving assembly 413 is used to drive the first wedge 411 to move. The driving assembly 413 includes a driving motor 4131, a transmission mechanism 4132 and a reduction mechanism 4133. The driving motor 4131 is arranged on the first bearing block 31. The input end of the reduction mechanism 4133 is connected to the output shaft of the driving motor 4131. The output end of the reduction mechanism 4133 is in transmission connection with the transmission mechanism 4132. The transmission mechanism 4132 is in transmission connection with the first wedge 411, and is used to convert the rotation of the driving motor 4131 into the movement of the first wedge 411.

[0147] Among them, the driving motor 4131 can be a servo motor, and the transmission mechanism 4132 can be a lead screw mechanism. The transmission mechanism 4132 includes a nut member and a lead screw. One end of the lead screw is connected to the first wedge 411 and extends along the moving direction of the first wedge 411. The driving motor 4131 is used to drive the nut member to rotate. The nut member is sleeved outside the lead screw and is in threaded cooperation with the lead screw. When the driving motor 4131 drives the nut member to rotate, the nut member drives the lead screw to move, thereby driving the first wedge 411 to move.

[0148] In the initial state after the installation of the first rolling roll 1 and the second rolling roll 2, no deflection deformation occurs in the first rolling roll 1 and the second rolling roll 2. A plurality of adjusting components 41 are located on the same straight line along the axial direction of the first rolling roll 1, and the dimensions of the plurality of adjusting components 41 in the up-and-down direction are the same. During the operation of the battery electrode sheet rolling equipment 100, deflection deformation may occur in the first rolling roll 1 or the second rolling roll 2. The thickness measuring equipment can measure the thickness of the battery electrode sheet, and the thickness measuring equipment can feed back the thickness data of the battery electrode sheet to the PLC (Programmable Logic Controller) of the battery electrode sheet rolling equipment 100, and the PLC processes the relevant information. For example, if the middle of the battery electrode sheet is thick and the two sides are thin, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the first rolling roll 1 has a concave deformation, the middle part of the first rolling roll 1 is lower than the two sides, and the roll gap between the first rolling roll 1 and the second rolling roll 2 is larger in the middle and smaller at the two sides. It is possible to control the dimensions of the two adjusting components 41 with the farthest distance between the two bearing seat components 3 in the up-and-down direction to increase. Under the action of the first oil cylinder of the first driving device, the two adjusting components 41 with the farthest distance serve as fulcrums, so that the middle part of the first rolling roll 1 deforms upward, offsetting the deflection deformation of the first rolling roll 1, and making the dimensions of the roll gap between the first rolling roll 1 and the second rolling roll 2 along the axial direction of the first rolling roll 1 tend to be consistent, thereby adjusting the thickness consistency of the battery electrode sheet in the transverse direction and meeting the production process requirements.

[0149] Another example is that if the middle of the battery electrode sheet is thin and the two sides are thick, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the first rolling roll 1 has a convex deformation, the middle part of the first rolling roll 1 is higher than the two sides, and the roll gap between the first rolling roll 1 and the second rolling roll 2 is smaller in the middle and larger at the two sides. It is possible to control the dimensions of the two adjusting components 41 with the closest distance between the two bearing seat components 3 in the up-and-down direction to increase. Under the action of the first oil cylinder of the first driving device, the first bearing seat 31 uses the two adjusting components 41 with the closest distance as fulcrums, so that the two end parts of the first rolling roll 1 deform upward, offsetting the deflection deformation of the first rolling roll 1, and making the dimensions of the roll gap between the first rolling roll 1 and the second rolling roll 2 along the axial direction of the first rolling roll 1 tend to be consistent, adjusting the thickness consistency of the battery electrode sheet in the transverse direction and meeting the production process requirements.

[0150] For another example, if the middle of the battery electrode plate is thick and the two sides are thin, corresponding to the battery electrode plate rolling equipment 100, it is determined that the second rolling roll 2 has a concave deformation, the middle part of the second rolling roll 2 is lower than the two sides, and the roll gap between the first rolling roll 1 and the second rolling roll 2 is larger in the middle and smaller at the two sides. The dimensions of the two adjusting components 41 with the farthest distance between the two bearing seat assemblies 3 in the up and down direction can be controlled to increase. Under the action of the second oil cylinder of the second driving device, the second bearing seat 32 uses the two adjusting components 41 with the farthest distance as the fulcrums, so that the middle part of the second rolling roll 2 deforms downward to offset the deflection deformation of the second rolling roll 2, or under the action of the first oil cylinder of the first driving device, the first bearing seat 31 uses the two adjusting components 41 with the farthest distance as the fulcrums, so that the middle part of the first rolling roll 1 deforms towards the second rolling roll 2 to offset the deflection deformation of the second rolling roll 2, making the dimensions of the roll gap between the first rolling roll 1 and the second rolling roll 2 tend to be consistent along the axial direction of the first rolling roll 1, thereby adjusting the thickness consistency of the battery electrode plate in the transverse direction to meet the production process requirements.

[0151] For another example, if the middle of the battery electrode plate is thin and the two sides are thick, corresponding to the battery electrode plate rolling equipment 100, it is determined that the second rolling roll 2 has a convex deformation, the middle part of the second rolling roll 2 is higher than the two sides, and the roll gap between the first rolling roll 1 and the second rolling roll 2 is smaller in the middle and larger at the two sides. The dimensions of the two adjusting components 41 with the closest distance between the two bearing seat assemblies 3 in the up and down direction can be controlled to increase. Under the action of the second oil cylinder of the second driving device, the second bearing seat 32 uses the two adjusting components 41 with the closest distance as the fulcrums, so that the two end parts of the second rolling roll 2 deform towards the first rolling roll 1 to offset the deflection deformation of the second rolling roll 2, or under the action of the first oil cylinder of the first driving device, the first bearing seat 31 uses the two adjusting components 41 with the closest distance as the fulcrums, so that the two end parts of the first rolling roll 1 deform towards the second rolling roll 2 to offset the deflection deformation of the second rolling roll 2, making the dimensions of the roll gap between the first rolling roll 1 and the second rolling roll 2 tend to be consistent along the axial direction of the first rolling roll 1, and adjusting the thickness consistency of the battery electrode plate in the transverse direction to meet the production process requirements.

[0152] On both sides of each first wedge 411 along the axial direction of the first rolling roll 1, there are wedge retaining bars 311. The wedge retaining bars 311 are arranged on the first bearing seat 31 and extend along the moving direction of the first wedge 411. A limiting groove 312 is defined between the two wedge retaining bars 311, and the first wedge 411 is movably arranged in the limiting groove 312.

[0153] The limiting member 414 is used to limit the relative positions of the first wedge 411 and the second wedge 412. Specifically, the limiting member 414 includes an optoelectronic component and an occlusion member 4144. The optoelectronic component is disposed on the wedge bar 311 and includes a first optoelectronic switch 4142 and a second optoelectronic switch 4143. The first optoelectronic switch 4142 and the second optoelectronic switch 4143 are spaced apart along the moving direction of the first wedge 411. The occlusion member 4144 is disposed on the first wedge 411 and is used to cooperate with the first optoelectronic switch 4142 or the second optoelectronic switch 4143. The occlusion member 4144 moves relatively between the first optoelectronic switch 4142 and the second optoelectronic switch 4143.

[0154] The first optoelectronic switch 4142 and the second optoelectronic switch 4143 can be used to detect the occlusion member 4144. During the movement of the first wedge 411, when the first optoelectronic switch 4142 detects the occlusion member 4144, it indicates that the first wedge 411 has moved to the extreme position in one direction. When the second optoelectronic switch 4143 detects the occlusion member 4144, it indicates that the first wedge 411 has moved to the extreme position in the other direction. The first optoelectronic switch 4142 and the second optoelectronic switch 4143 can be connected to a PLC. The first optoelectronic switch 4142 and the second optoelectronic switch 4143 can transmit the detected information to the PLC. When the first wedge 411 moves to the two extreme positions, the PLC can control the drive motor 4131 to stop working, so that the first wedge 411 stops moving, reducing the possibility of equipment damage and safety accidents.

[0155] The detection element 415 is used to detect whether the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact. Specifically, the detection element 415 includes a proximity sensor 4151 and a cooperating member 4152 that cooperates with the proximity sensor 4151. The proximity sensor 4151 is disposed on the first wedge 411, and the cooperating member 4152 is disposed on the second wedge 412. The proximity sensor 4151 and the cooperating member 4152 are arranged in the up-down direction. When the proximity sensor 4151 detects that the cooperating member 4152 is approaching, it indicates that the inclined surfaces of the first wedge 411 and the second wedge 412 are in good contact. When the proximity sensor 4151 cannot detect the cooperating member 4152, it indicates that the inclined surfaces of the first wedge 411 and the second wedge 412 are separated and not in contact. At this time, adjustment is required in a timely manner to make the inclined surfaces of the first wedge 411 and the second wedge 412 in contact, reducing the problem of unstable distance between the first roller 1 and the second roller 2 caused by the non-contact between the first wedge 411 and the second wedge 412 during the production process, resulting in fluctuations in the thickness of the battery electrode sheet.

[0156] Among them, the proximity sensor 4151 can send the detection information to the PLC. When it detects that the inclined surfaces of the first wedge 411 and the second wedge 412 are not in contact, the PLC will send a reminder signal or actively control the drive motor 4131 to drive the first wedge 411 to move, so that the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact.

[0157] The battery electrode sheet rolling equipment 100 further includes a positioning assembly, which is arranged on the first bearing block 31 and / or the second bearing block 32. The positioning assembly is used to position a plurality of adjustment assemblies 41 on the same straight line extending along the axis direction of the first rolling roll 1. The positioning member 5 is a microswitch. Four positioning members 5 are arranged on one side of each adjustment assembly 41 along the first direction (such as Figure 2 the A direction shown). Among them, two positioning members 5 are arranged opposite to the first wedge 411 and are arranged on the first bearing block 31 for positioning the first wedge 411. The two positioning members 5 for positioning the first wedge 411 are arranged at intervals in the axial direction of the first rolling roll 1; the other two positioning members 5 are arranged opposite to the second wedge 412 and are arranged on the second bearing block 32 for positioning the second wedge 412. The two positioning members 5 for positioning the second wedge 412 are arranged at intervals in the axial direction of the first rolling roll 1. At the same time, the two positioning members 5 for positioning the first wedge 411 and the two positioning members 5 for positioning the second wedge 412 are arranged opposite to each other in the arrangement direction of the first wedge 411 and the second wedge 412.

[0158] In this application, by arranging the adjustment device 4 between the first bearing block 31 and the second bearing block 32, the adjustment device 4 includes two adjustment assemblies 41 arranged at intervals in the axial direction of the first rolling roll 1. The adjustment assembly 41 includes a first wedge 411 and a second wedge 412 arranged in the up-and-down direction. Among them, the first wedge 411 is movably arranged on the first bearing block 31, and the second wedge 412 is fixed on the second bearing block 32. Combining the upward acting force of the first oil cylinder of the first rolling roll 1 or combining the downward acting force of the second oil cylinder of the second rolling roll 2, the deflection deformation of the first rolling roll 1 and the second rolling roll 2 is offset, the transverse thickness consistency in the battery electrode sheet production process is improved, and the production process requirements are met. In addition, this application cancels the bending cylinder assembly and the corresponding hydraulic control system, shortens the time for replacing the first rolling roll 1 and the second rolling roll 2 by half, and reduces the corresponding hoisting structure during the process, which not only improves the inherent safety of the equipment but also reduces the workload of the corresponding staff.

[0159] In this application, by driving the first wedge 411 to move through a servo motor, the position of the first wedge 411 can be precisely adjusted to meet the process requirements of the deflection deformation of the first roll 1 and the second roll 2 under different conditions; using a micro switch as a positioning reference can improve the position consistency of all adjustment components 41, digitalize the positions of the adjustment components 41, and further achieve fine control in cooperation with a high-precision servo motor, improving the control ability of the first roll 1 and the second roll 2 to offset deflection deformation; by detecting the contact situation between the first wedge 411 and the second wedge 412 through a proximity sensor 4151, the problem of battery electrode sheet thickness fluctuation caused by the unstable distance between the first roll 1 and the second roll 2 due to the non-contact between the first wedge 411 and the second wedge 412 during the production process can be improved; by arranging optoelectronic components on both sides of the first wedge 411 for detecting the positive and negative limit positions of the first wedge 411, damage to the wedge mechanism can be prevented.

[0160] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0161] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery pole sheet rolling equipment, characterized in that: include: frame; A first roller and a second roller, wherein the first roller and the second roller are arranged in parallel; A bearing seat assembly, wherein the bearing seat assemblies are two and are respectively arranged at two ends of the first roller or the second roller in the axial direction, the bearing seat assembly is arranged on the frame and comprises a first bearing seat matched with the first roller and a second bearing seat matched with the second roller; An adjustment device is provided between the first bearing seat and the second bearing seat of each bearing seat assembly, and the adjustment device includes two adjustment components spaced apart in the axial direction of the first roller, and the size of the adjustment component in the arrangement direction of the first roller and the second roller is adjustable, and a driving device for driving the first roller and / or the second roller for extrusion is located between the two adjustment components.

2. The battery pole sheet rolling equipment according to claim 1, characterized in that: The adjustment component comprises: A first oblique iron and a second oblique iron, wherein the first oblique iron and the second oblique iron are arranged along an arrangement direction of the first roller and the second roller, and an inclined surface of the first oblique iron and an inclined surface of the second oblique iron are in contact with each other.

3. The battery pole sheet rolling equipment according to claim 2, characterized in that: The first oblique iron is movably arranged on the first bearing seat, the moving direction of the first oblique iron is perpendicular to the axis of the first rolling roller, and the second oblique iron is fixed on the second bearing seat.

4. The battery pole sheet rolling equipment according to claim 3, characterized in that: The adjustment assembly also includes a driving assembly, which is disposed on the first bearing seat and is used to drive the first inclined iron to move.

5. The battery pole sheet rolling equipment according to claim 4, characterized in that: The drive assembly comprises: A driving motor, wherein the driving motor is arranged on the first bearing seat; A transmission mechanism is connected to the output shaft of the drive motor and the first inclined iron in a transmission manner, and is used to convert the rotation of the drive motor into the movement of the first inclined iron.

6. The battery pole sheet rolling equipment according to claim 5, characterized in that: The drive assembly also includes: A speed reduction mechanism, wherein an input end of the speed reduction mechanism is connected to an output shaft of the drive motor, and an output end of the speed reduction mechanism is transmission-connected to the transmission mechanism.

7. The battery pole sheet rolling equipment according to claim 3, characterized in that: The first bearing seat is provided with a limiting groove, the limiting groove extends along the moving direction of the first inclined iron, and the first inclined iron is movably arranged in the limiting groove.

8. The battery pole sheet rolling equipment according to claim 7, characterized in that: Each of the first oblique irons is provided with oblique iron bars on both sides along the axial direction of the first rolling roller. The oblique iron bars are arranged on the first bearing seat and extend along the moving direction of the first oblique iron. The limiting groove is defined between the two oblique iron bars.

9. The battery pole sheet rolling equipment according to claim 2, characterized in that: The adjustment component also includes: A limiting member is used to limit the relative position of the first inclined iron and the second inclined iron.

10. The battery pole sheet rolling equipment according to claim 9, characterized in that: The limiting member comprises: A photoelectric component, the photoelectric component comprising a first photoelectric switch and a second photoelectric switch, wherein the first photoelectric switch and the second photoelectric switch are spaced apart along a moving direction of the first inclined iron; A shielding member, the shielding member is used to cooperate with the first photoelectric switch or the second photoelectric switch, the shielding member moves relatively between the first photoelectric switch and the second photoelectric switch, one of the photoelectric component and the shielding member is arranged on the first inclined iron, and the other is fixed relative to the first bearing seat.

11. The battery pole sheet rolling equipment according to claim 2, characterized in that: The adjustment component also includes: A detection element is used to detect whether the inclined surface of the first inclined iron and the inclined surface of the second inclined iron are in contact with each other.

12. The battery pole sheet rolling equipment according to claim 11, characterized in that: The detection element includes a proximity sensor and a matching piece matched with the proximity sensor. The proximity sensor is arranged on one of the first inclined iron and the second inclined iron, and the matching piece is arranged on the other of the first inclined iron and the second inclined iron.

13. The battery pole sheet rolling equipment according to claim 2, characterized in that: The first inclined iron and the second inclined iron have the same structure, the friction coefficient of the inclined surface of the first inclined iron and the inclined surface of the second inclined iron is A, the inclination angle of the inclined surface of the first inclined iron and the second inclined iron is α, and satisfies: tanα<A.

14. The battery pole sheet rolling equipment according to claim 1, characterized in that: Also includes: A positioning assembly is disposed on the first bearing seat and / or the second bearing seat, and is used to position the plurality of adjustment assemblies on the same straight line extending along the axial direction of the first roller.

15. The battery pole sheet rolling equipment according to claim 14, characterized in that: The positioning assembly includes a plurality of positioning members, and the plurality of positioning members are located on the same straight line extending along the axial direction of the first roller. Each adjustment assembly is provided with the positioning member on one side along a first direction, and the first direction is perpendicular to the axial direction of the first roller and the arrangement direction of the first roller and the second roller.

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