Battery electrode sheet calendering apparatus

Abstract

A battery electrode sheet calendering apparatus (100), comprising: a frame; a first calender roll (1) and a second calender roll (2), the first calender roll (1) and the second calender roll (2) being arranged in parallel; bearing housing assemblies (3), two bearing housing assemblies (3) being respectively disposed at two axial ends of the first calender roll (1) and the second calender roll (2), and each bearing housing assembly (3) being disposed on the frame and comprising a first bearing housing (31) working in conjunction with the first calender roll (1) and a second bearing housing (32) working in conjunction with the second calender roll (2); and adjustment devices (4), an adjustment device (4) being disposed between the first bearing housing (31) and the second bearing housing (32) of each bearing housing assembly (3), the adjustment device (4) comprising two adjustment assemblies (41) spaced apart from each other in the axial direction of the first calender roll (1), each adjustment assembly (41) having an adjustable dimension in the arrangement direction of the first calender roll (1) and the second calender roll (2), and a driving device for driving the first calender roll (1) and / or the second calender roll (2) to press against each other being located between the two adjustment assemblies (41). The battery electrode sheet calendering apparatus (100) can offset the deflection deformation generated by the first calender roll (1) and the second calender roll (2), thereby adjusting the thickness uniformity of the battery electrode sheet in the transverse direction. In addition, the first calender roll (1) and the second calender roll (2) have a relatively short replacement cycle and a low replacement difficulty.

Description

Battery electrode rolling equipment

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202520463168.X, filed on March 17, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery manufacturing technology, and in particular to a battery electrode rolling equipment. Background Technology

[0004] In related technologies, the requirements for lithium battery manufacturing processes are constantly increasing in order to improve the energy density, cycle life, and other performance characteristics of battery electrodes. Currently, most battery manufacturing processes employ rolling technology to roll battery electrodes. The main focus of the rolling process is to improve the high compaction density and uniformity of the compacted thickness of the electrodes. However, as the width of battery electrodes continues to increase, the required roll surface width also becomes wider. Compared to rolls of the same diameter, a wider roll surface results in greater deflection deformation of the roll itself. Greater roll deflection inevitably leads to a decrease in the uniformity of the compacted thickness of the electrode. Summary of the Invention

[0005] In view of the above problems, this application provides a battery electrode rolling device that can counteract the deflection deformation generated by the first roll and the second roll, and adjust the thickness consistency of the battery electrode in the lateral direction.

[0006] In a first aspect, this application provides a battery electrode rolling apparatus, comprising: a frame; a first roll and a second roll, the first roll and the second roll being arranged in parallel; a bearing housing assembly, wherein there are two bearing housing assemblies respectively disposed at both ends of the first roll or the second roll in the axial direction, the bearing housing assembly being disposed on the frame and including a first bearing housing cooperating with the first roll and a second bearing housing cooperating with the second roll; an adjustment device, wherein the adjustment device is provided between the first bearing housing and the second bearing housing of each bearing housing assembly, the adjustment device comprising two adjustment components spaced apart in the axial direction of the first roll, the size of the adjustment components being adjustable in the arrangement direction of the first roll and the second roll, and a driving device for driving the first roll and / or the second roll to extrude is located between the two adjustment components.

[0007] In the above technical solution, adjustment devices are respectively provided between the first bearing seats at both ends of the first roll and the second bearing seats at both ends of the second roll. Each adjustment device includes two adjustment components arranged in the axial direction of the first or second roll, and the dimensions of these components are adjustable along the arrangement direction of the first and second rolls. When the first or second roll undergoes deflection deformation, the dimensions of a portion of the adjustment components along the arrangement direction of the first and second rolls can be adjusted to act as a fulcrum. 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 or second roll deforms to counteract the deflection deformation, making the roll gap between the first and second rolls more consistent along the axial direction of the first roll. This adjusts the lateral thickness consistency of the battery electrode sheets, meeting production process requirements. Furthermore, the replacement cycle for the first and second rolls in this application is short and the process is relatively simple.

[0008] In some embodiments, the adjustment assembly includes: a first wedge and a second wedge, the first wedge and the second wedge being arranged along the arrangement direction of the first roll and the second roll, and the inclined surfaces of the first wedge and the second wedge being in contact with each other.

[0009] In the above technical solution, a first wedge and a second wedge are arranged within the adjustment assembly. The first and second wedges are arranged along the arrangement direction of the first and second rolls, with the inclined surfaces of the first and second wedges fitting together. By adjusting the relative positions of the first and second wedges, their dimensions along the arrangement direction of the first and second rolls can be adjusted. The structure is simple and the operation is convenient. Furthermore, this application allows for a short replacement cycle and is relatively easy to implement.

[0010] In some embodiments, the first wedge is movably disposed 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.

[0011] In the above technical solution, the second wedge is fixed on the second bearing seat, and the first wedge is movably mounted on the first bearing seat. This facilitates the fixing of the adjustment assembly and improves the accuracy of the adjustment assembly in adjusting the deflection deformation of the first and second rolls. Simultaneously, the relative movement of the first and second wedges is achieved through the movability of the first wedge, thereby facilitating the adjustment of the dimensions of the adjustment assembly along the arrangement direction of the first and second rolls. The structure is simple and the operation is convenient.

[0012] In some embodiments, the adjustment assembly further includes a drive assembly disposed on the first bearing housing for driving the first wedge to move.

[0013] In the above technical solution, by setting a driving component to drive the first wedge to move, the movement of the first wedge can be automated, and the adjustment of the battery electrode rolling equipment can be automated, so as to better adjust in real time according to the thickness of the battery electrode and improve the problem of poor thickness consistency of the battery electrode.

[0014] In some embodiments, the drive assembly includes: a drive motor mounted on the first bearing housing; and a transmission mechanism connected to the output shaft of the drive motor and the first wedge for converting the rotation of the drive motor into the movement of the first wedge.

[0015] In the above technical solution, by setting a drive motor and a transmission mechanism in the drive assembly, the accuracy of the movement of the first wedge can be improved by the drive motor, so as to meet the process requirements of the deflection deformation of the first roll or the second roll under different conditions. At the same time, the rotation of the drive motor is converted into the movement of the first wedge by the transmission mechanism, which makes it easier for the drive motor to drive the first wedge to move.

[0016] The drive assembly further includes a reduction mechanism, the input end of which is connected to the output shaft of the drive motor, and the output end of which is connected to the transmission mechanism.

[0017] In the above technical solution, by setting a speed reduction mechanism, the rotational speed transmitted from the drive motor to the transmission mechanism can be reduced, thereby reducing the moving speed of the first wedge and thus accurately adjusting the position of the first wedge to meet the process requirements of the deflection deformation of the first roll or the second roll under different conditions.

[0018] In some embodiments, the first bearing housing is provided with a limiting groove, the limiting groove extends along the moving direction of the first wedge, and the first wedge is movably disposed within the limiting groove.

[0019] In the above technical solution, by setting a limiting groove, the first wedge can be limited, making the movement direction of the first wedge more accurate and the cooperation with the second wedge more reliable. This improves the reliability of the adjustment component and reduces the situation where the first and second rolls cannot be adjusted due to the instability of the fulcrum caused by the unreliability of the adjustment component.

[0020] In some embodiments, each of the first wedges is provided with wedge bars on both sides along the axial direction of the first roll. The wedge bars are disposed on the first bearing seat and extend along the moving direction of the first wedge. The limiting groove is defined between the two wedge bars.

[0021] In the above technical solution, by setting multiple wedge bars on the surface of the first bearing housing, the multiple wedge bars define two limiting grooves, which facilitates the setting of the limiting grooves and reduces damage to the structure of the first bearing housing itself. While improving the structural strength of the first bearing housing, it also facilitates the movement of the first wedge.

[0022] In some embodiments, the adjustment component further includes a limiting member for defining the relative positions of the first wedge and the second wedge.

[0023] In the above technical solution, by setting a limiting component, the relative position of the first wedge and the second wedge can be limited, reducing the problem of the first wedge and the second wedge separating from each other or the adjustment component being damaged due to the large displacement of the first wedge.

[0024] In some embodiments, the limiting member includes: a photoelectric component, the photoelectric component 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; and a blocking member, the blocking member being used to cooperate with the first photoelectric switch or the second photoelectric switch, the blocking member being movable relative to the first photoelectric switch and the second photoelectric switch, one of the photoelectric component and the blocking member being disposed on the first wedge, and the other being fixed relative to the first bearing seat.

[0025] In the above technical solution, by setting up a photoelectric component and a shielding component, one of the photoelectric component and the shielding component is disposed on the first wedge, and the other is fixed relative to the first bearing seat, so that the photoelectric component and the shielding component can move relative to each other. In addition, the photoelectric component includes a first photoelectric switch and a second photoelectric switch that are spaced apart along the moving direction of the first wedge. By cooperating with the shielding component, the first photoelectric switch and the second photoelectric switch can limit the two extreme positions of the movement of the first wedge, thereby limiting the range of movement displacement of the first wedge and reducing the problem of the first wedge and the second wedge detaching from each other or the adjustment component being damaged due to the large movement displacement of the first wedge.

[0026] 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.

[0027] In the above technical solution, by setting a 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 to make the inclined surfaces of the first wedge and the second wedge in contact, thereby reducing the problem of battery electrode thickness fluctuation caused by the unstable spacing between the first roll and the second roll due to the first wedge and the second wedge not being in contact during the production process.

[0028] In some embodiments, the detection element includes a proximity sensor and a mating member that mates with the proximity sensor, the proximity sensor being disposed on one of the first wedge and the second wedge, and the mating member being disposed on the other of the first wedge and the second wedge.

[0029] In the above technical solution, by setting the detection elements as proximity sensors and mating parts, it is possible not only to effectively detect whether the inclined surfaces of the first wedge and the second wedge are in contact, but also to reduce the impact on the relative movement of the first wedge and the second wedge.

[0030] In some embodiments, the first wedge and the second wedge have the same structure, the coefficient of friction of the inclined surface of the first wedge and the inclined surface of the second wedge is A, the inclination angle of the inclined surface of the first wedge and the second wedge is α, and satisfies: tanα<A.

[0031] In the above technical solution, by making the inclination angle α of the first wedge and the second wedge satisfy tanα<A, where A is the friction coefficient of the inclination surfaces of the first wedge and the second wedge, the first wedge and the second wedge can achieve friction self-locking, reducing the problem of relative slippage between the first wedge and the second wedge and preventing equipment safety accidents.

[0032] In some embodiments, the battery electrode rolling equipment further includes a positioning component disposed on the first bearing housing and / or the second bearing housing, the positioning component being used to position the plurality of the adjusting components on the same straight line extending along the axial direction of the first roll.

[0033] In the above technical solution, by setting a positioning component, the positioning component can be used to position the adjustment component, so that multiple adjustment components are positioned on the same straight line extending along the axial direction of the first roll, so that the positions of all adjustment components are consistent, and the positions of the adjustment components are digitized, thereby improving the control capability to counteract deflection deformation.

[0034] In some embodiments, the positioning assembly includes a plurality of positioning elements located on the same straight line extending along the axial direction of the first roll. Each adjustment assembly has the positioning element on one side along a first direction, which is perpendicular to the axial direction of the first roll and the arrangement direction of the first roll and the second roll.

[0035] In the above technical solution, by setting multiple positioning elements in the positioning component, and providing positioning elements on one side of each adjustment component along the first direction, and having multiple positioning elements located on the same straight line extending along the axial direction of the first roll, not only can the reliability of the positioning of the adjustment component be improved, but the structure of the battery electrode rolling equipment can also be simplified.

[0036] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0037] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0038] Figure 1 is a schematic diagram of a battery electrode rolling apparatus according to an embodiment of this application;

[0039] Figure 2 is a perspective view of the adjustment device of a battery electrode rolling equipment according to an embodiment of this application;

[0040] Figure 3 is a perspective view of the adjustment assembly of the adjustment device of the battery electrode rolling equipment according to an embodiment of this application;

[0041] Figure 4 is an enlarged view of point B in Figure 3.

[0042] Reference numerals: 100, Battery electrode rolling equipment; 1, First roll; 2, Second roll; 3, Bearing housing assembly; 31, First bearing housing; 311, Wedge bar; 312, Limiting groove; 32, Second bearing housing; 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 element; 4142, First photoelectric switch; 4143, Second photoelectric switch; 4144, Blocking element; 415, Detection element; 4151, Proximity sensor; 4152, Fitting part; 5, Positioning element. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0045] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0048] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0049] In this application, "multiple" means two or more (including two).

[0050] In the embodiments of this application, unless otherwise specified, all implementation methods and optional implementation methods of this application can be combined with each other to form new technical solutions.

[0051] In the embodiments of this application, unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form new technical solutions.

[0052] In related technologies, the requirements for lithium battery manufacturing processes are constantly increasing in order to improve the energy density, cycle life, and other performance characteristics of battery electrodes. Currently, most battery manufacturing processes employ rolling technology to roll battery electrodes. The main focus of the rolling process is to improve the high compaction density and uniformity of the compacted thickness of the electrodes. However, as the width of battery electrodes continues to increase, the required roll surface width also becomes wider. Compared to rolls of the same diameter, a wider roll surface results in greater deflection deformation of the roll itself. Greater roll deflection inevitably leads to a decrease in the uniformity of the compacted thickness of the electrode.

[0053] Based on this, this application proposes a battery electrode rolling equipment, including a frame, a first roll, a second roll, a bearing housing assembly, and an adjustment device. The first roll and the second roll are arranged in parallel; there are two bearing housing assemblies, which are respectively located at both ends of the first roll or the second roll in the axial direction. The bearing housing assembly is mounted on the frame and includes a first bearing housing that cooperates with the first roll and a second bearing housing that cooperates with the second roll; an adjustment device is provided between the first bearing housing and the second bearing housing of each bearing housing assembly. The adjustment device includes two adjustment components spaced apart in the axial direction of the first roll. The dimensions of the adjustment components are adjustable in the arrangement direction of the first roll and the second roll. A drive device for driving the first roll and / or the second roll to extrude is located between the two adjustment components.

[0054] The aforementioned battery electrode rolling equipment includes adjustment devices installed between the first bearing seats at both ends of the first roll and the second bearing seats at both ends of the second roll. Each adjustment device comprises two adjustment components arranged axially along the first or second roll, and the dimensions of these components are adjustable along the arrangement direction of the first and second rolls. When the first or second roll undergoes deflection deformation, adjusting a portion of the adjustment components along the arrangement direction of the first and second rolls allows it to act as a fulcrum. 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 or second roll deforms to counteract the deflection deformation, making the roll gap between the first and second rolls more consistent along the axial direction of the first roll. This adjusts the transverse thickness consistency of the battery electrode, meeting production process requirements. Furthermore, the replacement cycle for the first and second rolls in this application is short and the process is relatively simple.

[0055] The battery electrode rolling apparatus 100 according to an embodiment of this application is described below with reference to Figures 1-4.

[0056] Referring to Figures 1-3, this application provides a battery electrode rolling equipment 100, including: a frame, a first roll 1, a second roll 2, a bearing housing assembly 3, and an adjustment device 4. The first roll 1 and the second roll 2 are arranged in parallel; there are two bearing housing assemblies 3, which are respectively located at both ends of the first roll 1 or the second roll 2 in the axial direction. The bearing housing assembly 3 is located on the frame and includes a first bearing housing 31 that cooperates with the first roll 1 and a second bearing housing 32 that cooperates with the second roll 2; an adjustment device 4 is provided between the first bearing housing 31 and the second bearing housing 32 of each bearing housing assembly 3. The adjustment device 4 includes two adjustment components 41 that are spaced apart in the axial direction of the first roll 1. The size of the adjustment components 41 is adjustable in the arrangement direction of the first roll 1 and the second roll 2. A drive device for driving the first roll 1 and / or the second roll 2 to extrude is located between the two adjustment components 41.

[0057] The cross-sections of the first roll 1 and the second roll 2 when no deflection deformation occurs can be circular. The first roll 1 and the second roll 2 can rotate about their respective central axes. The first roll 1 and the second roll 2 are arranged parallel and spaced apart, with a roll gap between them, and the battery electrode can be located within the roll gap. A force can be applied to at least one of the first roll 1 and the second roll 2 to move towards each other, thereby extruding the battery electrode.

[0058] The rotation directions of the first roll 1 and the second roll 2 can be opposite, driving the battery electrode sheet forward during their rotation. For example, on the projection of a plane perpendicular to the axes of the first roll 1 and the second roll 2, the first roll 1 can rotate counterclockwise, at which time the second roll 2 can rotate clockwise, or the first roll 1 can rotate clockwise, at which time the second roll 2 can rotate counterclockwise.

[0059] Two bearing housing assemblies 3 are mounted on the frame. The two bearing housing assemblies 3 are spaced apart along the axial direction of the first roll 1 or the second roll 2. Each bearing housing assembly 3 includes a first bearing housing 31 and a second bearing housing 32. The two ends of the first roll 1 are rotatably mounted in the two first bearing housings 31 of the two bearing housing assemblies 3, and the two ends of the second roll 2 are rotatably mounted in the two second bearing housings 32 of the two bearing housing assemblies 3, so as to facilitate the rotation of the first roll 1 and the second roll 2.

[0060] A drive device for driving the first roll 1 and the second roll 2 to extrude is mounted on the frame. For example, the drive device may include a first drive device for driving the first roll 1 to move toward the second roll 2. The first drive device may include a first hydraulic cylinder, which may be two cylinders mounted on the frame. The two cylinders are respectively connected to two first bearing seats 31 and are used to push the two first bearing seats 31 toward the second bearing seat 32, thereby driving the first roll 1 to move toward the second roll 2 to extrude the battery electrode sheet.

[0061] Of course, the driving device may also include a second driving device, which is used to drive the second roll 2 to move toward the first roll 1. The second driving device may include a second hydraulic cylinder, and there may be two second hydraulic cylinders. The two second hydraulic cylinders are mounted on the frame and are respectively connected to two second bearing seats 32, which are used to push the two second bearing seats 32 to move toward the first bearing seat 31, thereby driving the second roll 2 to move toward the first roll 1 to realize the extrusion of the battery electrode sheet.

[0062] The first driving device can be located on the side of the first bearing housing 31 opposite to the second bearing housing 32, and the first hydraulic cylinder can extend along the arrangement direction of the first roll 1 and the second roll 2. The second driving device can be located on the side of the second bearing housing 32 opposite to the first bearing housing 31, and the second hydraulic cylinder can extend along the arrangement direction of the first roll 1 and the second roll 2. For example, the first roll 1 and the second roll 2 extend horizontally and are arranged vertically, and the first hydraulic cylinder and the second hydraulic cylinder extend vertically, thereby facilitating the application of driving force to the first bearing housing 31 or the second bearing housing 32.

[0063] An adjustment device 4 is provided between the first bearing housing 31 and the second bearing housing 32 of each bearing housing assembly 3. The adjustment device 4 includes two adjustment components 41 spaced apart in the axial direction of the first roll 1. The dimensions of the adjustment components 41 are adjustable in the arrangement direction of the first roll 1 and the second roll 2. The drive device for driving the first roll 1 and / or the second roll 2 to extrude is located between the two adjustment components 41. It is understood that when the drive device includes a first drive device and the first drive device includes a first hydraulic cylinder, the first hydraulic cylinder is located between the two adjustment components 41 on the same side of the adjustment device 4 in the axial direction of the first roll 1; when the drive device includes a second drive device and the second drive device includes a second hydraulic cylinder, the second hydraulic cylinder is located between the two adjustment components 41 on the same side of the adjustment device 4 in the axial direction of the second roll 2.

[0064] The distance between the two adjustment components 41 of the same adjustment device 4 along the axial direction of the first roll 1 or the second roll 2 can be adjusted according to the width of the first bearing seat 31 and the second bearing seat 32. As the distance between the two adjustment components 41 increases, the effect of controlling the bending moment of the first roll 1 and the second roll 2 becomes more obvious.

[0065] In the initial state after installation, multiple adjustment components 41 are in the same position and have the same dimensions along the arrangement direction of the first roll 1 and the second roll 2. During the operation of the battery electrode 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 electrode and feed the thickness data back to the PLC (Programmable Logic Controller) of the battery electrode rolling equipment 100. When the thickness meets the process requirements, production continues; when the thickness does not meet the process requirements, the PLC processes the relevant information. For example, if the battery electrode is thicker in the middle and thinner at the edges, the battery electrode rolling equipment 100 determines that the first roll 1 has undergone a concave deformation, with the middle part of the first roll 1 being lower than the two sides, and the roll gap between the first roll 1 and the second roll 2 being larger in the middle and smaller at the edges. The dimensions of the two adjustment components 41 with the greatest distance between the two bearing seat assemblies 3 can be increased in the arrangement direction of the first roll 1 and the second roll 2. Under the action of the first cylinder of the first drive device, the first bearing seat 31 uses the adjustment components 41 with the increased dimensions, i.e. the two adjustment components 41 with the greatest distance, as the fulcrum, so that the middle part of the first roll 1 deforms toward the second roll 2, which counteracts the deflection deformation of the first roll 1 and makes the roll gap between the first roll 1 and the second roll 2 tend to be consistent in the axial direction of the first roll 1, thereby adjusting the thickness consistency of the battery electrode sheet in the lateral direction to meet the production process requirements.

[0066] For example, if a battery electrode sheet is thinner in the middle and thicker at the edges, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the first roll 1 has undergone a convex deformation, with the middle part of the first roll 1 being higher than the two sides, and the roll gap between the first roll 1 and the second roll 2 being smaller in the middle and larger at the edges. The dimensions of the two closest adjustment components 41 between the two bearing seat assemblies 3 can be increased in the arrangement direction of the first roll 1 and the second roll 2. Under the action of the first cylinder of the first drive device, the first bearing seat 31 uses the increased adjustment components 41, i.e., the two closest adjustment components 41, as fulcrums, causing the two ends of the first roll 1 to deform towards the second roll 2. This counteracts the deflection deformation of the first roll 1, making the roll gap between the first roll 1 and the second roll 2 more consistent along the axial direction of the first roll 1, adjusting the transverse thickness consistency of the battery electrode sheet to meet the production process requirements.

[0067] For example, if the battery electrode sheet is thicker in the middle and thinner at both sides, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the second roll 2 has a concave deformation, the middle part of the second roll 2 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 both sides. The dimensions of the two adjustment components 41 furthest apart between the two bearing housing assemblies 3 can be increased in the arrangement direction of the first roll 1 and the second roll 2. Under the action of the second cylinder of the second drive device, the second bearing housing 32 uses the increased adjustment components 41, i.e., the two furthest adjustment components 41, as fulcrums, causing the middle part of the second roll 2 to deform toward the first roll 1, thus counteracting the deflection deformation of the second roll 2. Alternatively, under the action of the first cylinder of the first drive device, the first bearing housing 31 uses the increased adjustment components 41, i.e., the two furthest adjustment components 41, as fulcrums, causing the middle part of the first roll 1 to deform toward the second roll 2, thus counteracting the deflection deformation of the second roll 2. This makes the roll gap between the first roll 1 and the second roll 2 tend to be consistent in the axial direction of the first roll 1, thereby adjusting the lateral thickness consistency of the battery electrode sheet to meet the production process requirements.

[0068] For example, if the battery electrode sheet is thin in the middle and thick on both sides, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the second roll 2 has produced a convex deformation, the middle part of the second roll 2 is higher than the two sides, and the roll gap between the first roll 1 and the second roll 2 is small in the middle and large on both sides. The dimensions of the two closest adjusting components 41 between the two bearing housing assemblies 3 can be increased in the arrangement direction of the first roll 1 and the second roll 2. Under the action of the second cylinder of the second drive device, the second bearing housing 32 uses the increased adjusting components 41, i.e., the two closest adjusting components 41, as fulcrums, so that the two ends of the second roll 2 deform toward the first roll 1, thus counteracting the deflection deformation of the second roll 2. Alternatively, under the action of the first cylinder of the first drive device, the first bearing housing 31 uses the increased adjusting components 41, i.e., the two closest adjusting components 41, as fulcrums, so that the two ends of the first roll 1 deform toward the second roll 2, thus counteracting the deflection deformation of the second roll 2. This makes the roll gap between the first roll 1 and the second roll 2 tend to be consistent in the axial direction of the first roll 1, adjusting the transverse thickness consistency of the battery electrode sheet to meet the production process requirements.

[0069] During the battery electrode production process, due to the limited lifespan of the coating on the surfaces of the first roll 1 and the second roll 2, the first roll 1 and the second roll 2 need to be replaced frequently. In this application, because the adjustment device 4 is located between the first bearing seat 31 and the second bearing seat 32, when replacing the first roll 1 and the second roll 2, the first bearing seat 31 is disassembled, and the first roll 1 is moved along the axial direction of the first roll 1 to disassemble it. Similarly, the second bearing seat 32 is disassembled, and the second roll 2 is moved along the axial direction of the second roll 2 to disassemble it. This results in a short replacement cycle and reduced difficulty.

[0070] In the example shown in Figure 1, the axes of the first roll 1 and the second roll 2 extend horizontally, the first roll 1 and the second roll 2 are arranged vertically, and the first roll 1 is located below the second roll 2. Accordingly, the height of the adjusting assembly 41 in the vertical direction (as shown in Figure 1) is adjustable.

[0071] In the above technical solution, adjustment devices 4 are respectively provided 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 dimensions of the adjustment components 41 along the arrangement direction of the first roll 1 and the second roll 2 are adjustable. When the first roll 1 or the second roll 2 undergoes deflection deformation, the dimensions of part of the adjustment components 41 along the arrangement direction of the first roll 1 and the second roll 2 can be adjusted to make it a fulcrum. 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 counteract the deflection deformation generated by the first roll 1 and the second roll 2, so that the roll gap between the first roll 1 and the second roll 2 tends to be consistent along the axial direction of the first roll 1, thereby adjusting the transverse thickness consistency of the battery electrode sheet to meet 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.

[0072] In some embodiments, referring to FIG2 and FIG3, the adjustment assembly 41 includes a first wedge 411 and a second wedge 412, 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, and the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact with each other.

[0073] In this application, by changing 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 along the arrangement direction of the first roll 1 and the second roll 2 can be adjusted. For example, in the example shown in Figures 2 and 3, the first wedge 411 and the second wedge 412 are arranged in the vertical direction, with the first wedge 411 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 fit together. The first wedge 411 and the second wedge 412 have different heights in direction A (as shown in Figure 3). Direction A is parallel to the horizontal plane. When the first wedge 411 and the second wedge 412 move relative to each other along direction A, the total height of the first wedge 411 and the second wedge 412 in the vertical direction can be adjusted.

[0074] In related technologies, bending cylinders are used to counteract the deflection deformation of the rolls. However, the bending cylinder device requires four bending cylinder groups and a complex hydraulic system to control the bending cylinder force. The replacement of the first and second rolls is time-consuming and difficult.

[0075] The adjustment assembly 41 of this application is located between the first bearing housing 31 and the second bearing housing 32. When replacing the first roll 1 and the second roll 2, the first roll 1 is disassembled by removing the first bearing housing 31 and then moving it axially along the first roll 1. Similarly, the second roll 2 is disassembled by removing the second bearing housing 32 and then moving it axially along the second roll 2. This application eliminates the bending cylinder assembly and the corresponding hydraulic control system, significantly shortening the time required to replace the first roll 1 and the second roll 2. Furthermore, it reduces the need for lifting structures, thereby improving the inherent safety of the equipment and reducing the workload of the personnel.

[0076] In the above technical solution, the adjusting assembly 41 is provided with a first wedge 411 and a second wedge 412. 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 in contact with each other. 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 is short and the difficulty is low.

[0077] In some embodiments, referring to Figures 1-3, the first wedge 411 is movably disposed on the first bearing seat 31, and the moving direction of the first wedge 411 (direction A as shown in Figure 2) is perpendicular to the axis of the first roll 1, and the second wedge 412 is fixed on the second bearing seat 32.

[0078] The second wedge 412 is fixed to the second bearing seat 32, which can fix the second wedge 412, improve the reliability of the fixation of the second wedge 412, and improve the accuracy of the adjustment assembly 41 in adjusting the deflection deformation of the first roll 1 and the second roll 2. The first wedge 411 is provided on the first bearing seat 31, which can fix the first wedge 411, improve the reliability of the fixation of the first wedge 411, and improve the accuracy of the adjustment assembly 41 in adjusting the deflection deformation of the first roll 1 and the second roll 2.

[0079] The first wedge 411 is movably mounted on the first bearing seat 31, so that the relative movement of the first wedge 411 and the second wedge 412 can be realized by moving the first wedge 411, thereby facilitating the adjustment of the size of the adjustment assembly 41 along the arrangement direction of the first roll 1 and the second roll 2.

[0080] Of course, this application is not limited to this. The first wedge 411 can be fixed on the first bearing seat 31, and the second wedge 412 can be movably disposed on the second bearing seat 32. The relative movement of the first wedge 411 and the second wedge 412 is achieved by moving the second wedge 412, thereby adjusting the size of the adjusting assembly 41 along the arrangement direction of the first roll 1 and the second roll 2. Alternatively, the first wedge 411 can be movably disposed on the first bearing seat 31, and the second wedge 412 can also be movably disposed on the second bearing seat 32. During adjustment, only the first wedge 411, only the second wedge 412, or both the first wedge 411 and the second wedge 412 can be moved.

[0081] In the above technical solution, the second wedge 412 is fixed on the second bearing seat 32, and the first wedge 411 is movably mounted on the first bearing seat 31, which facilitates the fixing of the adjustment assembly 41 and improves the accuracy of the adjustment assembly 41 in adjusting the deflection deformation of the first roll 1 and the second roll 2. At the same time, the relative movement of the first wedge 411 and the second wedge 412 is achieved by the movability of the first wedge 411, thereby facilitating the adjustment of the dimensions of the adjustment assembly 41 along the arrangement direction of the first roll 1 and the second roll 2. The structure is simple and the operation is convenient.

[0082] In some embodiments, referring to Figures 2 and 3, the adjustment component 41 further includes a drive component 413, which is disposed on the first bearing seat 31 and is used to drive the first wedge 411 to move.

[0083] The drive assembly 413 can provide power for the movement of the first wedge 411. The drive assembly 413 can be connected to a PLC. When the PLC determines that the first roll 1 or the second roll 2 has deflection deformation, it can control the drive assembly 413 of the corresponding adjustment assembly 41 to work, thereby controlling the movement of the first wedge 411 and adjusting the size of the adjustment assembly 41 according to the form of deformation.

[0084] In the above technical solution, by setting the drive component 413 to drive the first wedge 411 to move, the movement of the first wedge 411 can be automated, and the adjustment of the battery electrode rolling equipment 100 can be automated, so as to better adjust in real time according to the thickness of the battery electrode and improve the problem of poor thickness consistency of the battery electrode.

[0085] In some embodiments, referring to Figures 2 and 3, the drive assembly 413 includes a drive motor 4131 and a transmission mechanism 4132. The drive motor 4131 is mounted on a first bearing housing 31, and the transmission mechanism 4132 is connected to the output shaft of the drive motor 4131 and the first wedge 411 for transmitting the rotation of the drive motor 4131 into the movement of the first wedge 411.

[0086] The drive motor 4131 can be a servo motor, which 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 drive motor 4131 into the movement of the first wedge 411, so that the drive motor 4131 can better drive the first wedge 411 to move.

[0087] The transmission mechanism 4132 can be a lead screw mechanism, which includes a nut 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 drive motor 4131 is used to drive the nut to rotate. The nut is sleeved on the outside of the lead screw and threaded with the lead screw. When the drive motor 4131 drives the nut to rotate, the nut drives the lead screw to move, thereby driving the first wedge 411 to move.

[0088] Of course, this application is not limited to this. The transmission mechanism 4132 can also be a gear and rack structure. The transmission mechanism 4132 includes a drive gear and a rack. One end of the rack is connected to the first wedge 411 and extends along the moving direction of the first wedge 411. The drive motor 4131 is used to drive the drive gear to rotate. The drive gear meshes with the rack. When the drive motor 4131 drives the drive gear to rotate, the gear drives the rack to move, thereby driving the first wedge 411 to move.

[0089] In the above technical solution, by setting a drive motor 4131 and a transmission mechanism 4132 in the drive assembly 413, the accuracy of the movement of the first wedge 411 can be improved by the drive motor 4131, so as 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 drive motor 4131 is converted into the movement of the first wedge 411 by the transmission mechanism 4132, which makes it easier for the drive motor 4131 to drive the first wedge 411 to move.

[0090] In some embodiments, referring to Figures 2 and 3, the drive assembly 413 further includes a reduction mechanism 4133, the input end of which is connected to the output shaft of the drive motor 4131, and the output end of which is connected to the transmission mechanism 4132.

[0091] The drive motor 4131 has a high rotational speed. A reduction mechanism 4133 is set between the drive motor 4131 and the transmission mechanism 4132 to reduce the rotational speed transmitted to the transmission mechanism 4132, thereby accurately 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.

[0092] The reduction mechanism 4133 can be a gear reduction mechanism, which includes an input gear and an output gear. The input gear is connected to the output shaft of the drive motor 4131, and the output gear is connected to the transmission mechanism 4132.

[0093] In the above technical solution, by setting a speed reduction mechanism 4133, the rotational speed transmitted from the drive motor 4131 to the transmission mechanism 4132 can be reduced, thereby reducing the moving speed of the first wedge 411 and thus accurately 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.

[0094] In some embodiments, the first bearing seat 31 is provided with a limiting groove 312, which extends along the moving direction of the first wedge 411, and the first wedge 411 is movably disposed in the limiting groove 312.

[0095] The limiting groove 312 can limit the movement direction of the first wedge 411, making the movement of the first wedge 411 more reliable, thereby making the cooperation between the first wedge 411 and the second wedge 412 more reliable, and thus making the adjustment component 41 more reliable, reducing the situation where the first roll 1 and the second roll 2 cannot be adjusted due to the instability of the fulcrum caused by the unreliability of the adjustment component 41.

[0096] In the above technical solution, by setting the limiting groove 312, the first wedge 411 can be limited, making the movement direction of the first wedge 411 more accurate, the cooperation with the second wedge 412 more reliable, improving the reliability of the adjustment component 41, and reducing the situation where the first roll 1 and the second roll 2 cannot be adjusted due to the instability of the fulcrum caused by the unreliability of the adjustment component 41.

[0097] In some embodiments, as shown in Figures 2 and 3, each first wedge 411 is provided with wedge bars 311 on both sides along the axial direction of the first roll 1. The wedge bars 311 are provided 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 bars 311.

[0098] The inclined iron bar 311 protrudes from the surface of the first bearing seat 31 and can be welded to the first bearing seat 31. A limiting groove 312 is defined between two inclined iron bars 311. The first inclined iron 411 is movably disposed between the two inclined iron bars 311. Two adjusting components 41 are provided between the first bearing seat 31 and the second bearing seat 32 on the same side. Four inclined iron bars 311 can be provided. The four inclined iron bars 311 are divided into two groups, with two inclined iron bars 311 in each group. Each group of two inclined iron bars 311 defines a limiting groove 312. The four inclined iron bars 311 define two limiting grooves 312. The two adjusting components 41 of the adjusting device 4 are movably disposed in the two limiting grooves 312 respectively.

[0099] Of course, this application is not limited to this. The limiting groove 312 can also be formed by recessing the surface of the first bearing seat 31. For example, the limiting groove 312 can be cut into the surface of the first bearing seat 31 or the recessed limiting groove 312 can be formed by injection molding on the surface of the first bearing seat 31 during injection molding.

[0100] In the above technical solution, by setting multiple inclined iron bars 311 on the surface of the first bearing seat 31, the multiple inclined 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 seat 31 itself. While improving the structural strength of the first bearing seat 31, it also facilitates the movement of the first inclined iron 411.

[0101] In some embodiments, referring to FIG3, the adjustment component 41 further includes a limiting member 414 for defining the relative positions of the first wedge 411 and the second wedge 412.

[0102] During the movement of the first wedge 411, it cannot move in one direction without restriction, reducing the risk of the first wedge 411 and the second wedge 412 detaching or the adjustment assembly 41 being damaged. In this application, a limiting member 414 is provided, which can limit the relative position of the first wedge 411 and the second wedge 412, thereby limiting the movement displacement of the first wedge 411 and reducing the risk of damage to the adjustment assembly 41.

[0103] In the above technical solution, by setting the limiting member 414, the relative position of the first wedge 411 and the second wedge 412 can be limited, reducing the problem of the first wedge 411 and the second wedge 412 separating from each other or the adjustment component 41 being damaged due to the large displacement of the first wedge 411.

[0104] In some embodiments, referring to FIG3, the limiting member 414 includes a photoelectric component and a blocking member 4144. The photoelectric component includes a first photoelectric switch 4142 and a second photoelectric switch 4143, which are spaced apart along the moving direction of the first wedge 411. The blocking member 4144 is used to cooperate with the first photoelectric switch 4142 or the second photoelectric switch 4143. The blocking member 4144 moves relative to the first photoelectric switch 4142 and the second photoelectric switch 4143. One of the photoelectric component and the blocking member 4144 is disposed on the first wedge 411, and the other is fixed relative to the first bearing seat 31.

[0105] The shielding component 4144 can be disposed on the first wedge 411. At this time, the photoelectric component is fixedly disposed relative to the first bearing seat 31. When the photoelectric component is fixedly disposed relative to the first bearing seat 31, the photoelectric component can be directly disposed on the first bearing seat 31, or disposed on the second wedge 412, or disposed on the wedge stop 311. The photoelectric component can be disposed on the first wedge 411. At this time, the shielding component 4144 can be fixedly disposed relative to the first bearing seat 31. When the shielding component 4144 is fixedly disposed relative to the first bearing seat 31, the photoelectric component can be directly disposed on the first bearing seat 31, or disposed on the second wedge 412, or disposed on the wedge stop 311.

[0106] In the example shown in Figure 3, the blocking member 4144 is disposed on the first wedge 411, and the photoelectric component is fixed relative to the first bearing seat 31. The photoelectric component is disposed on the wedge stop 311, and the first photoelectric switch 4142 and the second photoelectric switch 4143 are spaced apart on the wedge stop 311 along the moving direction of the first wedge 411. The blocking member 4144 is located between the first photoelectric switch 4142 and the second photoelectric switch 4143.

[0107] The first photoelectric switch 4142 and the second photoelectric switch 4143 can be used to detect the obstruction 4144. During the movement of the first wedge 411, when the first photoelectric switch 4142 detects the obstruction 4144, it indicates that the first wedge 411 has moved to the extreme position in one direction. When the second photoelectric switch 4143 detects the obstruction 4144, it indicates that the first wedge 411 has moved to the extreme position in the other direction. The first photoelectric switch 4142 and the second photoelectric switch 4143 can be connected to a PLC. The first photoelectric switch 4142 and the second photoelectric switch 4143 can transmit the detected information to the PLC. When the first wedge 411 moves to either of the two extreme positions, the PLC can control the drive motor 4131 to stop working, thereby stopping the first wedge 411 from moving.

[0108] The first photoelectric switch 4142 and the second photoelectric switch 4143 can control the movement of the blocking member 4144 between the first photoelectric switch 4142 and the second photoelectric switch 4143, thereby limiting the range of movement of the first wedge 411. This reduces the problem of the first wedge 411 and the second wedge 412 separating from each other or the adjustment assembly 41 being damaged due to the large movement of the first wedge 411. Furthermore, under pressure, this reduces the possibility of equipment damage and safety accidents.

[0109] The shielding member 4144 is fixed relative to the first bearing seat 31. When the photoelectric component is set on the first wedge 411, the principle is the same as described above, and will not be described in detail here.

[0110] In the above technical solution, by setting a photoelectric component and a shielding member 4144, one of the photoelectric component and the shielding member 4144 is disposed on the first wedge 411, and the other is fixed relative to the first bearing seat 31, so that the photoelectric component and the shielding member 4144 can move relative to each other. 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 of the first photoelectric switch 4142 and the second photoelectric switch 4143 with the shielding member 4144 can limit the two extreme positions of the movement of the first wedge 411, thereby limiting the range of movement displacement of the first wedge 411 and reducing the problem of the first wedge 411 and the second wedge 412 detaching from each other or the adjustment component 41 being damaged due to the large movement displacement of the first wedge 411.

[0111] In some embodiments, the adjustment assembly 41 further includes a detection element 415, which is used to detect whether the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact.

[0112] The inclined surfaces of the first inclined iron 411 and the second inclined iron 412 are in contact with each other, and the dimensions of the adjustment component 41 in the arrangement direction of the first roll 1 and the second roll 2 are relatively stable, so that the distance between the first roll 1 and the second roll 2 is relatively stable, which is beneficial to achieving the consistency of the battery electrode thickness.

[0113] 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 issue 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. This can reduce the problem of unstable spacing between the first roll 1 and the second roll 2 caused by the first wedge 411 and the second wedge 412 not contacting each other during the production process, which can cause fluctuations in the thickness of the battery electrode.

[0114] In the above technical solution, by setting a detection element 415 to detect whether the inclined surfaces of the first inclined iron 411 and the second inclined iron 412 are in contact, the relative positions of the first inclined iron 411 and the second inclined iron 412 can be adjusted in time to make the inclined surfaces of the first inclined iron 411 and the second inclined iron 412 in contact, thereby reducing the problem of unstable spacing between the first roll 1 and the second roll 2 caused by the first inclined iron 411 and the second inclined iron 412 not being in contact during the production process, which leads to fluctuations in the thickness of the battery electrode sheet.

[0115] In some embodiments, referring to FIG3 and FIG4, the detection element 415 includes a proximity sensor 4151 and a mating member 4152 that mates with the proximity sensor 4151. The proximity sensor 4151 is disposed on one of the first wedge 411 and the second wedge 412, and the mating member 4152 is disposed on the other of the first wedge 411 and the second wedge 412.

[0116] The proximity sensor 4151 and the mating part 4152 are arranged in the same direction as the first wedge 411 and the second wedge 412. When the proximity sensor 4151 detects that the mating part 4152 is close, 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 mating part 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, it is necessary to make timely adjustments to make the inclined surfaces of the first wedge 411 and the second wedge 412 in contact, thereby reducing the problem of unstable spacing between the first roll 1 and the second roll 2 caused by the lack of contact between the first wedge 411 and the second wedge 412 during the production process, which leads to fluctuations in the thickness of the battery electrode.

[0117] Of course, the detection element 415 can also be a pressure sensor. The pressure sensor can be located between the inclined surfaces of the first wedge 411 and the second wedge 412. When the pressure sensor detects the compressive force of 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, it is necessary to make timely adjustments so that the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact.

[0118] In the above technical solution, by setting the detection element 415 as a proximity sensor 4151 and a mating part 4152, it is possible not only to effectively detect whether the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact, but also to reduce the influence on the relative movement of the first wedge 411 and the second wedge 412.

[0119] In some embodiments, the first wedge 411 and the second wedge 412 have the same structure, the coefficient of friction of the inclined surface of the first wedge 411 and the inclined surface of the second wedge 412 is A, the inclination angle of the inclined surfaces of the first wedge 411 and the second wedge 412 is α, and satisfies: tanα<A.

[0120] Friction self-locking refers to a device or principle in mechanical systems that utilizes friction to independently achieve a self-locking function. Its main function is to enable a mechanical system to reach a stable equilibrium state under external forces, preventing unexpected movement or loss of control. The principle of friction self-locking is based on the existence and action of friction. When there is relative motion or tilting between two objects, friction resists this motion or tilting, maintaining a certain relative position between the two objects. "Friction self-locking" achieves its self-locking function by adjusting the pressure and coefficient of friction between the two objects, making the friction greater than the external force.

[0121] When the inclination angle of the inclined surfaces of the first inclined iron 411 and the second inclined iron 412 is α and satisfies tanα<A, the frictional force between the inclined surfaces of the first inclined iron 411 and the second inclined iron 412 can be greater than the external force, thereby achieving frictional self-locking of the first inclined iron 411 and the second inclined iron 412, reducing the problem of relative slippage between the first inclined iron 411 and the second inclined iron 412, and preventing equipment safety accidents.

[0122] For example, as shown in Figure 3, the second wedge 412 is located above the first wedge 411. Both the first and second wedges 411 can be made of Q235 steel. Assuming the coefficient of friction of Q235 steel is 0.5, when the slope angle tanα of the first wedge 411 is less than 0.5, the maximum slope of the first wedge 411 is calculated to be 27°. That is, the maximum slope of the wedge cannot exceed 27°. When the maximum slope is exceeded, the first and second wedges 411 and 412 will experience uncontrollable relative slippage under vertical pressure, causing a safety accident.

[0123] In the above technical solution, by making the inclination angle α of the inclined surfaces of the first inclined iron 411 and the second inclined iron 412 satisfy tanα<A, where A is the friction coefficient of the inclined surfaces of the first inclined iron 411 and the second inclined iron 412, the first inclined iron 411 and the second inclined iron 412 can achieve friction self-locking, reducing the problem of relative slippage between the first inclined iron 411 and the second inclined iron 412 and preventing equipment safety accidents.

[0124] In some embodiments, the battery electrode rolling equipment 100 further includes a positioning component disposed on a first bearing seat 31 and / or a second bearing seat 32, the positioning component being used to position a plurality of adjusting components 41 on the same straight line extending along the axial direction of the first roll 1.

[0125] The positioning component ensures that all adjustment components 41 are in the same position, digitizing their positions and improving the control capability to counteract deflection deformation. Furthermore, the positioning component, in conjunction with a high-precision servo motor, further enables refined control, further enhancing the control capability to counteract deflection deformation.

[0126] The positioning component is disposed on the first bearing housing 31 and / or the second bearing housing 32. It is understood that the positioning component may be disposed only on the first bearing housing 31, or only on the second bearing housing 32, or both on the first bearing housing 31 and the second bearing housing 32, thereby improving the flexibility of the positioning component's placement.

[0127] In the above technical solution, by setting a positioning component, the positioning component can be used to position the adjustment component 41, so that multiple adjustment components 41 are positioned on the same straight line extending along the axial direction of the first roll 1, so that all adjustment components 41 are in the same position, so that the position of the adjustment component 41 is digitized, and the control capability to counteract deflection deformation is improved.

[0128] In some embodiments, referring to FIG3, the positioning assembly includes a plurality of positioning elements 5, which are located on the same straight line extending along the axial direction of the first roll 1. Each adjustment assembly 41 is provided with a positioning element 5 on one side along a first direction (direction A as shown in FIG2). 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.

[0129] Multiple positioning elements 5 position the adjustment components 41 on one side along the first direction, which not only improves the reliability of the positioning of the adjustment components 41, but also simplifies the structure of the battery electrode rolling equipment 100.

[0130] For example, in the example shown in Figure 3, the positioning element 5 is a micro switch. Each adjustment component 41 has four positioning elements 5 on one side along the first direction. Two positioning elements 5 are arranged opposite to the first wedge 411 and are mounted on the first bearing seat 31 to position the first wedge 411. These two positioning elements 5 are spaced apart in the axial direction of the first roll 1. The other two positioning elements 5 are arranged opposite to the second wedge 412 and are mounted on the second bearing seat 32 to position the second wedge 412. These two positioning elements 5 are spaced apart in the axial direction of the first roll 1. Simultaneously, the two positioning elements 5 for positioning the first wedge 411 and the two positioning elements 5 for positioning the second wedge 412 are respectively arranged opposite to each other in the arrangement direction of the first wedge 411 and the second wedge 412.

[0131] Of course, this application is not limited to this. The positioning element 5 can also be a positioning post. Each adjustment component 41 can be provided with one or more positioning posts on one side along the first direction. The positioning post can be provided on the first bearing seat 31 or the second bearing seat 32. The positioning post extends along the arrangement direction of the first wedge 411 and the second wedge 412. The positioning post can be simultaneously opposite to the first wedge 411 and the second wedge 412 for positioning 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 seat 31 and only opposite to the first wedge 411 for positioning the first wedge 411, and some positioning posts can be provided on the second bearing seat 32 and only opposite to the second wedge 412 for positioning the second wedge 412.

[0132] Additionally, it should be noted that in the first direction, the positioning member 5 is at least spaced apart from the first inclined iron 411, so as to facilitate the movement of the first inclined iron 411 along the first direction.

[0133] In the above technical solution, by setting multiple positioning elements 5 in the positioning component, and providing positioning elements 5 on one side of each adjustment component 41 along the first direction, and having multiple positioning elements 5 located on the same straight line extending along the axial direction of the first roll 1, not only can the reliability of the positioning of the adjustment component 41 be improved, but the structure of the battery electrode rolling equipment 100 can also be simplified.

[0134] The following describes a battery electrode pressing apparatus according to some embodiments of the present application with reference to Figures 1-4.

[0135] Referring to Figures 1-4, in this embodiment, the battery electrode rolling equipment 100 includes: a frame, a first roll 1, a second roll 2, a bearing housing assembly 3, and an adjustment device 4.

[0136] The first roll 1 and the second roll 2 are mounted on the frame, arranged parallel to each other with their axes extending horizontally. The first roll 1 is located below the second roll 2, and a gap exists between them, allowing the battery electrode to be positioned within the gap. The first roll 1 and the second roll 2 can rotate around their central axes, with their rotation directions potentially opposite. During rotation, the battery electrode is propelled forward.

[0137] Two bearing housing assemblies 3 are mounted on the frame. The two bearing housing assemblies 3 are spaced apart along the axial direction of the first roll 1 or the second roll 2. Each bearing housing assembly 3 includes a first bearing housing 31 and a second bearing housing 32. The first bearing housing 31 is located below the second bearing housing 32. The two ends of the first roll 1 are rotatably mounted in the two first bearing housings 31 of the two bearing housing assemblies 3, and the two ends of the second roll 2 are rotatably mounted in the two second bearing housings 32 of the two bearing housing assemblies 3, so as to facilitate the rotation of the first roll 1 and the second roll 2.

[0138] A drive device for driving the first roll 1 and the second roll 2 to perform extrusion is mounted on the frame. The drive device may include a first drive unit, which may be located below the first bearing seat 31. The first drive unit is used to drive the first roll 1 to move upward. The first drive unit may include a first hydraulic cylinder, which may extend in the vertical direction. There may be two first hydraulic cylinders, which are mounted on the frame and connected to two first bearing seats 31 respectively. They are used to push the two first bearing seats 31 to move upward, thereby driving the first roll 1 to move upward and extruding the battery electrode sheet.

[0139] The driving device may further include a second driving device, which may be located on the upper side of the second bearing seat 32. The second driving device is used to drive the second roll 2 to move downward. The second driving device may include a second hydraulic cylinder, which may extend in the vertical direction. There may be two second hydraulic cylinders, which are located on the frame and are respectively connected to two second bearing seats 32. They are used to push the two second bearing seats 32 toward the first bearing seat 31, thereby driving the second roll 2 to move toward the first roll 1, thus extruding the battery electrode sheet.

[0140] An adjustment device 4 is provided between the first bearing housing 31 and the second bearing housing 32 of each bearing housing assembly 3. The adjustment device 4 includes two adjustment components 41 spaced apart in the axial direction of the first roll 1. The adjustment components 41 are height-adjustable in the vertical direction. Along the axial direction of the first roll 1, the first oil cylinder is located between the two adjustment components 41 on the same side of the adjustment device 4, and the second oil cylinder is located between the two adjustment components 41 on the same side of the adjustment device 4.

[0141] The adjustment assembly 41 includes a first wedge 411, a second wedge 412, a drive assembly 413, a limiting member 414, and a detection element 415. The first wedge 411 is located below the second wedge 412 and is movably mounted on the first bearing seat 31. The direction of movement of the first wedge 411 (direction A as shown in Figure 2) is perpendicular to the axis of the first roll 1. The second wedge 412 is fixed on the second bearing seat 32, and the inclined surfaces of the first wedge 411 and the second wedge 412 are in contact with each other. The relative movement of the first wedge 411 and the second wedge 412 is achieved by moving the first wedge 411, thereby facilitating the adjustment of the height of the adjustment assembly 41 in the vertical direction.

[0142] The first wedge 411 and the second wedge 412 have the same structure and are both made of Q235 steel. The coefficient of friction 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 satisfies: tanα<0.5. This makes the frictional force between the inclined surfaces of the first wedge 411 and the second wedge 412 greater than the external force, thereby achieving frictional self-locking of the first wedge 411 and the second wedge 412 and reducing the problem of relative slippage between the first wedge 411 and the second wedge 412, which could lead to equipment safety accidents.

[0143] The drive assembly 413 is used to drive the first wedge 411 to move. The drive assembly 413 includes a drive motor 4131, a transmission mechanism 4132 and a reduction mechanism 4133. The drive motor 4131 is mounted on the first bearing seat 31. The input end of the reduction mechanism 4133 is connected to the output shaft of the drive motor 4131. The output end of the reduction mechanism 4133 is connected to the transmission mechanism 4132. The transmission mechanism 4132 is connected to the first wedge 411 to convert the rotation of the drive motor 4131 into the movement of the first wedge 411.

[0144] The drive 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 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 drive motor 4131 is used to drive the nut to rotate. The nut is sleeved on the outside of the lead screw and threaded with the lead screw. When the drive motor 4131 drives the nut to rotate, the nut drives the lead screw to move, thereby driving the first wedge 411 to move.

[0145] In the initial state after the first roll 1 and the second roll 2 are installed, the first roll 1 and the second roll 2 do not undergo deflection deformation. Multiple adjustment components 41 are located on the same straight line along the axial direction of the first roll 1, and the dimensions of the multiple adjustment components 41 are the same in the vertical direction. During the operation of the battery electrode 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 electrode and feed the thickness data back to the PLC (Programmable Logic Controller) of the battery electrode rolling equipment 100. The PLC processes the relevant information. For example, if the battery electrode is thicker in the middle and thinner at the edges, the battery electrode rolling equipment 100 determines that the first roll 1 has undergone a concave deformation, with the middle part of the first roll 1 being lower than the two sides, and the roll gap between the first roll 1 and the second roll 2 being larger in the middle and smaller at the edges. The two adjustment components 41 with the greatest distance between the two bearing housing assemblies 3 can be controlled to increase their size in the vertical direction. Under the action of the first cylinder of the first drive device, the two adjustment components 41 with the greatest distance between them act as fulcrums, causing the middle part of the first roll 1 to deform upward, thus offsetting the deflection deformation of the first roll 1. This makes the roll gap between the first roll 1 and the second roll 2 more consistent in the axial direction of the first roll 1, thereby adjusting the thickness consistency of the battery electrode sheet in the lateral direction to meet the production process requirements.

[0146] For example, if a battery electrode sheet is thinner in the middle and thicker at the edges, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the first roll 1 has undergone a convex deformation, with the middle part of the first roll 1 being higher than the two sides, and the roll gap between the first roll 1 and the second roll 2 being smaller in the middle and larger at the edges. The dimensions of the two closest adjusting components 41 between the two bearing seat assemblies 3 can be increased in the vertical direction. Under the action of the first cylinder of the first drive device, the first bearing seat 31 uses the two closest adjusting components 41 as fulcrums, causing the two ends of the first roll 1 to deform upwards, offsetting the deflection deformation of the first roll 1. This makes the roll gap between the first roll 1 and the second roll 2 more consistent along the axial direction of the first roll 1, adjusting the lateral thickness consistency of the battery electrode sheet to meet production process requirements.

[0147] For example, if a battery electrode sheet is thicker in the middle and thinner at the edges, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the second roll 2 has undergone a concave deformation, with the middle part of the second roll 2 being lower than the two sides, and the roll gap between the first roll 1 and the second roll 2 being larger in the middle and smaller at the edges. The dimensions of the two adjustment components 41 furthest apart between the two bearing seat assemblies 3 can be increased in the vertical direction. Under the action of the second cylinder of the second drive device, the second bearing seat 32 uses the two furthest adjustment components 41 as fulcrums, causing the middle part of the second roll 2 to deform downwards, thus offsetting the deflection deformation of the second roll 2. Alternatively, under the action of the first cylinder of the first drive device, the first bearing seat 31 uses the two furthest adjustment components 41 as fulcrums, causing the middle part of the first roll 1 to deform towards the second roll 2, offsetting the deflection deformation of the second roll 2. This makes the roll gap between the first roll 1 and the second roll 2 more consistent along the axial direction of the first roll 1, thereby adjusting the lateral thickness consistency of the battery electrode sheet to meet the production process requirements.

[0148] For example, if a battery electrode sheet is thinner in the middle and thicker at the edges, corresponding to the battery electrode sheet rolling equipment 100, it is determined that the second roll 2 has undergone a convex deformation, with the middle part of the second roll 2 being higher than the two sides, and the roll gap between the first roll 1 and the second roll 2 being smaller in the middle and larger at the edges. The dimensions of the two closest adjusting components 41 between the two bearing seat assemblies 3 can be increased in the vertical direction. Under the action of the second cylinder of the second drive device, the second bearing seat 32 uses the two closest adjusting components 41 as fulcrums, causing the two ends of the second roll 2 to deform towards the first roll 1, thus counteracting the deflection deformation of the second roll 2. Alternatively, under the action of the first cylinder of the first drive device, the first bearing seat 31 uses the two closest adjusting components 41 as fulcrums, causing the two ends of the first roll 1 to deform towards the second roll 2, thus counteracting the deflection deformation of the second roll 2. This makes the roll gap between the first roll 1 and the second roll 2 more consistent along the axial direction of the first roll 1, adjusting the lateral thickness consistency of the battery electrode sheet to meet the production process requirements.

[0149] Each first wedge 411 has a wedge bar 311 on both sides along the axial direction of the first roll 1. The wedge bar 311 is provided on the first bearing seat 31 and extends along the moving direction of the first wedge 411. A limiting groove 312 is defined between the two wedge bars 311, and the first wedge 411 is movably provided in the limiting groove 312.

[0150] The limiting member 414 is used to limit the relative position of the first wedge 411 and the second wedge 412. Specifically, the limiting member 414 includes a photoelectric component and a blocking member 4144. The photoelectric component is disposed on the wedge stop 311 and includes a first photoelectric switch 4142 and a second photoelectric switch 4143, which are spaced apart along the moving direction of the first wedge 411. The blocking member 4144 is disposed on the first wedge 411 and is used to cooperate with the first photoelectric switch 4142 or the second photoelectric switch 4143. The blocking member 4144 moves relative to the first photoelectric switch 4142 and the second photoelectric switch 4143.

[0151] The first photoelectric switch 4142 and the second photoelectric switch 4143 can be used to detect the obstruction 4144. During the movement of the first wedge 411, when the first photoelectric switch 4142 detects the obstruction 4144, it indicates that the first wedge 411 has moved to the extreme position in one direction. When the second photoelectric switch 4143 detects the obstruction 4144, it indicates that the first wedge 411 has moved to the extreme position in the other direction. The first photoelectric switch 4142 and the second photoelectric switch 4143 can be connected to a PLC. The first photoelectric switch 4142 and the second photoelectric switch 4143 can transmit the detected information to the PLC. When the first wedge 411 moves to either of the two extreme positions, the PLC can control the drive motor 4131 to stop working, thereby stopping the first wedge 411 from moving and reducing the possibility of equipment damage and safety accidents.

[0152] 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 mating part 4152 that cooperates with the proximity sensor 4151. The proximity sensor 4151 is disposed on the first wedge 411, and the mating part 4152 is disposed on the second wedge 412. The proximity sensor 4151 and the mating part 4152 are arranged in the vertical direction. When the proximity sensor 4151 detects that the mating part 4152 is close, 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 mating part 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, it is necessary to make timely adjustments to make the inclined surfaces of the first wedge 411 and the second wedge 412 in contact, thereby reducing the problem of unstable spacing between the first roll 1 and the second roll 2 caused by the lack of contact between the first wedge 411 and the second wedge 412 during the production process, which leads to fluctuations in the thickness of the battery electrode.

[0153] The proximity sensor 4151 can send 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 issue 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 come into contact.

[0154] The battery electrode rolling equipment 100 also includes a positioning assembly, which is disposed on the first bearing seat 31 and / or the second bearing seat 32. The positioning assembly is used to position multiple adjusting components 41 on the same straight line extending along the axial direction of the first roll 1. The positioning element 5 is a micro switch. Each adjusting component 41 has four positioning elements 5 on one side along the first direction (direction A as shown in Figure 2). Two positioning elements 5 are arranged opposite to the first wedge 411 and are disposed on the first bearing seat 31 to position the first wedge 411. The two positioning elements 5 used to position the first wedge 411 are spaced apart in the axial direction of the first roll 1. The other two positioning elements 5 are arranged opposite to the second wedge 412 and are disposed on the second bearing seat 32 to position the second wedge 412. The two positioning elements 5 used to position the second wedge 412 are spaced apart in the axial direction of the first roll 1. Meanwhile, the two positioning members 5 used to position the first wedge 411 and the two positioning members 5 used to position the second wedge 412 are respectively arranged opposite to each other in the arrangement direction of the first wedge 411 and the second wedge 412.

[0155] In this application, an adjustment device 4 is provided between the first bearing seat 31 and the second bearing seat 32. The adjustment device 4 includes two adjustment components 41 spaced apart in the axial direction of the first roll 1. Each adjustment component 41 includes two wedges 411 and 412 arranged vertically. The first wedge 411 is movably mounted on the first bearing seat 31, and the second wedge 412 is fixed on the second bearing seat 32. By combining the upward force of the first cylinder of the first roll 1 or the downward force of the second cylinder of the second roll 2, the deflection deformation of the first roll 1 and the second roll 2 can be counteracted, improving the lateral thickness consistency during the battery electrode production process and meeting the production process requirements. In addition, this application eliminates the bending cylinder assembly and the corresponding hydraulic control system, which reduces the time for changing the first roll 1 and the second roll 2 by half and reduces the corresponding hoisting structure during the process. This not only improves the inherent safety of the equipment but also reduces the workload of the relevant personnel.

[0156] In this application, the position of the first wedge 411 can be precisely adjusted by driving the first wedge 411 to move, meeting the process requirements of deflection deformation of the first roll 1 and the second roll 2 under different conditions. Using a micro switch as a positioning reference improves the consistency of the positions of all adjustment components 41, making the positions of the adjustment components 41 digitized. Simultaneously, the high-precision servo motor further enables refined control, improving the control capability of the first roll 1 and the second roll 2 to counteract deflection deformation. The contact status of the first wedge 411 and the second wedge 412 is detected by a proximity sensor 4151, which can improve the problem of battery electrode thickness fluctuation caused by unstable spacing between the first roll 1 and the second roll 2 due to the lack of contact between the first wedge 411 and the second wedge 412 during production. Photoelectric components are arranged on both sides of the first wedge 411 for detecting the positive and negative limit positions of the first wedge 411, preventing damage to the wedge mechanism.

[0157] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0158] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery electrode rolling equipment, wherein, include: frame; The first roll and the second roll are arranged in parallel. The bearing housing assembly comprises two bearing housing assemblies, which are respectively located at both ends of the first roll or the second roll in the axial direction. The bearing housing assembly is mounted on the frame and includes a first bearing housing that cooperates with the first roll and a second bearing housing that cooperates with the second roll. An adjustment device is provided 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 roll. The dimensions of the adjustment components are adjustable in the arrangement direction of the first roll and the second roll. A drive device for driving the first roll and / or the second roll to extrude is located between the two adjustment components.

2. The battery electrode rolling equipment according to claim 1, wherein, The adjustment components include: The first wedge and the second wedge are arranged along the arrangement direction of the first roll and the second roll, and the inclined surfaces of the first wedge and the second wedge are in contact with each other.

3. The battery electrode rolling equipment according to claim 2, wherein, The first wedge is movably mounted on the first bearing seat, and the direction of movement of the first wedge is perpendicular to the axis of the first roll. The second wedge is fixed on the second bearing seat.

4. The battery electrode rolling equipment according to claim 3, wherein, The adjustment assembly further includes a drive assembly, which is disposed on the first bearing seat and is used to drive the first wedge to move.

5. The battery electrode rolling equipment according to claim 4, wherein, The driving component includes: A drive motor is mounted on the first bearing housing; A transmission mechanism is provided, which is connected to the output shaft of the drive motor and the first wedge, and is used to convert the rotation of the drive motor into the movement of the first wedge.

6. The battery electrode rolling equipment according to claim 5, wherein, The driving component also includes: A speed reduction mechanism, wherein the input end of the speed reduction mechanism is connected to the output shaft of the drive motor, and the output end of the speed reduction mechanism is connected to the transmission mechanism.

7. The battery electrode rolling equipment according to any one of claims 3-6, wherein, The first bearing housing is provided with a limiting groove, which extends along the moving direction of the first wedge, and the first wedge is movably disposed in the limiting groove.

8. The battery electrode rolling equipment according to claim 7, wherein, Each of the first wedges is provided with wedge bars on both sides along the axial direction of the first roll. The wedge bars are provided on the first bearing seat and extend along the moving direction of the first wedge. The limiting groove is defined between the two wedge bars.

9. The battery electrode rolling equipment according to any one of claims 2-8, wherein, The adjustment component also includes: A limiting member is provided to limit the relative positions of the first wedge and the second wedge.

10. The battery electrode rolling equipment according to claim 9, wherein, The limiting component includes: The optoelectronic component includes a first optoelectronic switch and a second optoelectronic switch, which are spaced apart along the moving direction of the first wedge. A shielding component is provided for cooperating with the first photoelectric switch or the second photoelectric switch. The shielding component moves relative to the first photoelectric switch and the second photoelectric switch. One of the photoelectric component and the shielding component is disposed on the first wedge, and the other is fixed relative to the first bearing seat.

11. The battery electrode rolling equipment according to any one of claims 2-10, wherein, The adjustment component also includes: A detection element is used to detect whether the inclined surfaces of the first wedge and the second wedge are in contact.

12. The battery electrode rolling equipment according to claim 11, wherein, The detection element includes a proximity sensor and a mating component that cooperates with the proximity sensor. The proximity sensor is disposed on one of the first wedge and the second wedge, and the mating component is disposed on the other of the first wedge and the second wedge.

13. The battery electrode rolling equipment according to any one of claims 2-12, wherein, The first wedge and the second wedge have the same structure. The coefficient of friction of the inclined surface of the first wedge and the inclined surface of the second wedge is A. The inclination angle of the inclined surface of the first wedge and the second wedge is α, and satisfies: tanα<A.

14. The battery electrode rolling equipment according to any one of claims 1-13, wherein, Also includes: A positioning component is disposed on the first bearing housing and / or the second bearing housing, the positioning component being used to position the plurality of adjustment components on the same straight line extending along the axial direction of the first roll.

15. The battery electrode rolling equipment according to claim 14, wherein, The positioning assembly includes a plurality of positioning elements, which are located on the same straight line extending along the axial direction of the first roll. Each adjustment assembly has the positioning element on one side along a first direction, which is perpendicular to the axial direction of the first roll and the arrangement direction of the first roll and the second roll.

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