Battery pole piece rolling apparatus

Abstract

The utility model discloses a battery pole piece rolling equipment, include: frame, first roll and second roll, first roll and second roll are arranged in parallel, bearing seat subassembly, bearing seat subassembly is two and is respectively located first roll or second roll axial direction's both ends, and bearing seat subassembly is located frame and includes with first roll cooperation's first bearing seat and with second roll cooperation's second bearing seat, adjusting device, and the first bearing seat and second bearing seat of each bearing seat subassembly and the first bearing seat and frame between being equipped with adjusting device, and adjusting device includes two in first roll axial direction interval arrangement's adjusting component, and the size of adjusting component is adjustable in the arrangement direction of first roll and second roll. According to the battery pole piece rolling equipment of the utility model, can improve the thickness consistency of battery pole piece transverse, reduce the broken strip phenomenon of pole piece in the cold pressing process.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a battery electrode rolling equipment. Background Technology

[0002] In related technologies, during the cold pressing process of battery electrodes, the battery electrodes pass through the gap between the upper and lower rollers. Under the pressure of the main cylinder, the lower roller applies upward pressure to compress the battery electrodes to the target thickness. However, the two ends of the rollers that do not contact the battery electrodes do not have the reaction force of the battery electrodes to support them, resulting in greater deflection deformation compared to the middle area that contacts the battery electrodes. This deflection deformation will cause the cold-pressed battery electrodes to have over-pressure at the edges, i.e., "thick in the middle and thin at the edges", which will lead to poor uniformity of electrode thickness. In severe cases, there is also a risk of strip breakage. Utility Model Content

[0003] In view of the above problems, this utility model provides a battery electrode rolling equipment, which can improve the thickness uniformity of the battery electrode in the lateral direction and reduce the breakage phenomenon of the electrode during the cold pressing process.

[0004] In a first aspect, this utility model provides a battery electrode rolling equipment, comprising: a frame; a first roll and a second roll, the first roll and the second roll being arranged in parallel; a bearing seat assembly, wherein there are two bearing seat assemblies respectively disposed at both ends of the first roll or the second roll in the axial direction, the bearing seat assembly being disposed on the frame and including a first bearing seat cooperating with the first roll and a second bearing seat cooperating with the second roll; and an adjustment device, wherein the adjustment device is provided between the first bearing seat and the second bearing seat of each bearing seat assembly and between the first bearing seat and the frame, the adjustment device comprising two adjustment components spaced apart in the axial direction of the first roll, the dimensions of the adjustment components being adjustable in the arrangement direction of the first roll and the second roll.

[0005] 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, and adjustment devices are respectively provided between the second bearing seats at both ends of the first roll and the frame. The adjustment devices include two adjustment components arranged in the axial direction of the first roll or the second roll, and the dimensions of the adjustment components along the arrangement direction of the first roll and the second roll are adjustable. The deflection deformation of the first roll and the second roll can be adjusted by adjusting at least part of the adjustment components along the arrangement direction of the first roll and the second roll, so that the roll gap between the first roll and the second roll tends to be consistent in the axial direction of the first roll, thereby improving the transverse thickness uniformity of the battery electrode and reducing the strip breakage phenomenon of the electrode during the cold pressing process. In addition, the battery electrode rolling equipment of this application can reduce the space occupation and economic cost of the overall mechanism, while also improving the effect of adjusting the uniformity of electrode thickness.

[0006] 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, the inclined surfaces of the first wedge and the second wedge being in contact with each other, and at least one of the first wedge and the second wedge being movable to adjust the size of the adjustment assembly in the arrangement direction of the first roll and the second roll.

[0007] 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.

[0008] In some embodiments, the second wedge is located on the side of the first wedge close to the second bearing housing, the second wedge is fixed relative to the bearing housing assembly, and the first wedge is movable.

[0009] In the above technical solution, the second wedge is fixed relative to the bearing seat assembly, while the first wedge is movable relative to the bearing seat assembly. 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 movable first wedge enables relative movement between the first and second wedges, thus 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.

[0010] In some embodiments, the adjustment component further includes a drive component for driving the first wedge to move.

[0011] 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.

[0012] In some embodiments, the drive assembly includes: a drive motor disposed on the first bearing housing or the second bearing housing; and a transmission mechanism that is 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.

[0013] 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.

[0014] In some embodiments, 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.

[0015] 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.

[0016] In some embodiments, the first bearing housing is provided with a limiting groove on the side facing the second bearing housing and the frame is provided with a limiting groove on the side facing the first bearing housing. The limiting groove extends along the moving direction of the first wedge and the first wedge is movably disposed in the corresponding limiting groove.

[0017] 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, improving the reliability of the adjustment component and reducing the situation where the first and second rolls cannot be adjusted due to the unreliability of the adjustment component.

[0018] 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 extending along the moving direction of the first wedges, and the limiting groove is defined between the two wedge bars.

[0019] In the above technical solution, multiple inclined iron bars are respectively set on the surfaces of the first bearing housing and the frame. The multiple inclined iron bars define two limiting grooves, which facilitates the setting of the limiting grooves and reduces damage to the structure of the first bearing housing and the frame itself. While improving the structural strength of the first bearing housing and the frame, it also facilitates the movement of the first inclined iron.

[0020] In some embodiments, the adjustment component further includes a limiting member for limiting the relative travel of the first wedge and the second wedge.

[0021] In the above technical solution, by setting a limiting component, the relative movement stroke 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.

[0022] In some embodiments, the limiting member includes: a first limiting member, which is two members spaced apart along the moving direction of the first wedge or the second wedge; and a second limiting member, which is movable relative to the two first limiting members and adapted to abut against the two first limiting members, wherein the first limiting member is disposed on one of the first wedge and the second wedge, and the second limiting member is disposed on the other of the first wedge and the second wedge.

[0023] In the above technical solution, by setting two first limiting members spaced apart along the moving direction of the first wedge on one of the first wedges and the second wedges, and setting a second limiting member on the other of the first wedges and the second wedges, the second limiting member is located between the two first limiting members and is adapted to stop against the first limiting members, which 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 separating from each other or the adjustment component being damaged due to the large movement displacement of the first wedge.

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

[0025] In the above technical solution, by 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] In some embodiments, the device further includes a driving device, which is disposed on the side of the second roll away from the first roll and includes two driving members. The two driving members correspond one-to-one with the two bearing seat assemblies. Along the length direction of the first roll, the driving members are located between the two adjustment assemblies of the same adjustment device and are used to drive the second bearing seat to move toward the first bearing seat.

[0031] In the above technical solution, by setting a driving device, it is convenient to drive the second bearing seat to move the second roll toward the first roll, and to roll the battery electrode sheet through the first roll and the second roll. In addition, the driving component is located between the two adjustment components of the adjustment device on the same side, which makes it convenient to apply pressure to the driving component while using one of the two adjustment components of the same adjustment device as a fulcrum to adjust the deflection deformation of the first roll and the second roll.

[0032] In some embodiments, the distance between the drive member and one of the two adjustment components of the adjustment device on the same side, the adjustment component closest to the center of the first roll length direction, is less than the distance between the drive member and the other adjustment component.

[0033] In the above technical solution, the distance between the driving member and the adjustment component of the adjustment device on the same side, which is closer to the center of the length direction of the first roll, is less than the distance between the driving member and the other adjustment component, which facilitates the adjustment of the deflection deformation of the first roll and the second roll under the action of the driving device and the adjustment device.

[0034] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

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

[0036] Figure 1 This is a front view of a battery electrode rolling equipment according to an embodiment of the present utility model;

[0037] Figure 2 This is a side view of a battery electrode rolling equipment according to an embodiment of the present invention;

[0038] Figure 3 This is a comparison diagram of battery electrodes produced by the battery electrode rolling equipment according to the present invention and battery electrodes of the prior art;

[0039] Figure 4 This is a comparison diagram of the deformation amount of the first roll of the battery electrode rolling equipment according to the present invention and the deformation amount of the first roll of the battery electrode rolling equipment in the prior art.

[0040] Figure 5 This is a comparison diagram of the deformation amount of the second roll of the battery electrode rolling equipment according to the present invention and the deformation amount of the second roll of the battery electrode rolling equipment in the prior art;

[0041] Figure 6 This is a perspective view of the adjustment component according to an embodiment of the present utility model;

[0042] Figure 7 This is a side view of the adjustment component according to an embodiment of the present utility model.

[0043] Figure label:

[0044] 100. Battery electrode rolling equipment;

[0045] 1. First roll; 2. Second roll;

[0046] 3. Bearing housing assembly; 31. First bearing housing; 311. Wedge guard; 312. Limiting groove; 32. Second bearing housing;

[0047] 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 limiting element; 4143. Second limiting element; 415. Detection element; 4151. Proximity sensor; 4152. Fitting part;

[0048] 5. Rack;

[0049] 6. Drive unit; 61. Drive component. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0051] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order or hierarchy.

[0052] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. 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 mutually exclusive with other embodiments.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "attachment," 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In this invention, 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 invention, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0055] In the embodiments of this utility model, 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 utility model shown in the 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 utility model.

[0056] In this utility model, "multiple" refers to two or more (including two).

[0057] In the embodiments of this utility model, unless otherwise specified, all embodiments and optional embodiments of this utility model can be combined with each other to form new technical solutions.

[0058] In the embodiments of this utility model, unless otherwise specified, all technical features and optional technical features of this utility model can be combined with each other to form new technical solutions.

[0059] In related technologies, during the cold pressing process of battery electrodes, the battery electrodes pass through the gap between the upper and lower rollers. Under the pressure of the main cylinder, the lower roller applies upward pressure to compress the battery electrodes to the target thickness. However, the two ends of the rollers that do not contact the battery electrodes do not have the reaction force of the battery electrodes to support them, resulting in greater deflection deformation compared to the middle area that contacts the battery electrodes. This deflection deformation will cause the cold-pressed battery electrodes to have over-pressure at the edges, i.e., "thick in the middle and thin at the edges", which will lead to poor uniformity of electrode thickness. In severe cases, there is also a risk of strip breakage.

[0060] Based on this, the present invention proposes a battery electrode rolling equipment, comprising: 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 located 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 and between the first bearing housing and the frame. 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.

[0061] In the aforementioned battery electrode rolling equipment, adjustment devices are respectively 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, and further adjustment devices are installed between the second bearing seats at both ends of the first roll and the frame. Each adjustment device includes 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. By adjusting at least a portion of the adjustment components along the arrangement direction of the first and second rolls, the deflection deformation of the first and second rolls can be adjusted, making the roll gap between the first and second rolls more uniform along the axial direction of the first roll. This improves the transverse thickness uniformity of the battery electrode and reduces strip breakage during cold pressing. Furthermore, the battery electrode rolling equipment of this application reduces the overall space occupancy and economic cost, while also improving the effect of adjusting the uniformity of electrode thickness.

[0062] The following is for reference. Figures 1-7 Description of a battery electrode rolling apparatus 100 according to an embodiment of the present invention.

[0063] refer to Figure 1 and Figure 2 This utility model provides a battery electrode rolling equipment 100, including a frame 5, 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 mounted on the frame 5 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 and between the first bearing housing 31 and the frame 5. 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.

[0064] 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.

[0065] 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.

[0066] Two bearing housing assemblies 3 are mounted on the frame 5. 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. A first bearing is provided between the first roll 1 and the first bearing housing 31, and a second bearing is provided between the second roll 2 and the second bearing housing 32, so as to facilitate the rotation of the first roll 1 and the second roll 2.

[0067] An adjustment device 4 is provided between the first bearing housing 31 and the second bearing housing 32 of each bearing housing assembly 3, and an adjustment device 4 is provided between the first bearing housing 31 and the frame 5 of each bearing housing assembly 3. The adjustment device 4 between the first bearing housing 31 and the frame 5 and the adjustment device 4 between the first bearing housing 31 and the second bearing housing 32 are respectively located on opposite sides of the first bearing housing 31. 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.

[0068] In addition, two sets of adjustment components 41 are provided on the same adjustment device 4. The adjustment components 41 on the adjustment device 4 between the first bearing seat 31 and the second bearing seat 32, which are close to the center of the length direction of the first roll 1, can play a protective role, prevent the first roll 1 and the second roll 2 from rolling together, and improve the stability of the entire battery electrode rolling equipment 100.

[0069] exist Figure 1 and Figure 2 In the example shown, the first roll 1 is located above and parallel to the second roll 2. The first bearing seat 31 in the bearing seat assembly 3 is located above the second bearing seat 32. An adjustment device 4 is provided between the lower end of the first bearing seat 31 and the upper end of the second bearing seat 32. An adjustment device 4 is also provided between the upper end of the first bearing seat 31 and the frame 5. 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 vertical direction.

[0070] In addition, the battery electrode rolling equipment 100 in this application also includes a drive device 6. The drive device 6 is located on the side of the second roll 2 away from the first roll 1 and includes two drive members 61. The two drive members 61 correspond one-to-one with the two bearing seat assemblies 3. The drive members 61 are used to drive the second bearing seat 32 to move toward the first bearing seat 31, providing upward cold pressure to extrude the battery electrode. The drive member 61 may include a hydraulic cylinder, which can be connected between the frame 5 and the second bearing seat 32.

[0071] In the initial state after installation, the multiple adjustment components 41 located between the first bearing seat 31 and the second bearing seat 32 are in the same position and have the same dimensions along the arrangement direction of the first roll 1 and the second roll 2. The multiple adjustment components 41 located between the first bearing seat 31 and the frame 5 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 sheet. The thickness measuring device can feed back the thickness data of the battery electrode sheet to the PLC (Programmable Logic Controller) of the battery electrode sheet rolling equipment 100. 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 sheet is thicker in the middle and thinner at both ends, multiple adjustment devices 4 are used to make the two ends of the first roll 1 and the two ends of the second roll 2 subject to forces with opposite deflection deformation directions. Under the action of this force, the first roll 1 and the second roll 2 undergo deformation opposite to the deflection deformation, thereby counteracting the deflection deformation caused by the interaction between the first roll 1 and the second roll 2 and the electrode sheet, reducing the risk of overpressure at the edge of the electrode sheet, and thus improving the thickness consistency of the electrode sheet.

[0072] Specifically, the two ends of the first roll 1 can be driven to bend away from the second roll 2, or the two ends of the second roll 2 can be driven to bend away from the first roll 1, or both rolls can be driven simultaneously, such that the two ends of the first roll 1 bend away from the second roll 2, and the two ends of the second roll 2 bend away from the first roll 1, reducing large-scale deflection deformation of the rolls. Simultaneously, the bending deformation of the first roll 1 and the second roll 2 will, to some extent, offset the deflection deformation caused by the interaction between the first roll 1 and the second roll 2 and the electrode sheet, thus preventing edge overpressure on the electrode sheet, improving the consistency of the electrode sheet thickness, and reducing the problem of strip breakage.

[0073] For example, in Figure 1In the example shown, when only the second roll 2 is adjusted, the height of the adjustment component 41 between the first bearing seat 31 and the frame 5 in the vertical direction can remain unchanged. Specifically, the height of the adjustment component 41 between the first bearing seat 31 and the second bearing seat 32 in the vertical direction can be adjusted so that the height of the adjustment component 41 that is far from the center of the length direction of the first roll 1 in the same adjustment device 4 can be increased, thereby driving the two ends of the second roll 2 in the length direction to bend downward. At the same time, the roll body of the second roll 2 will also undergo a certain degree of bending deformation, making the roll gap between the first roll 1 and the second roll 2 more uniform along the length direction of the first roll 1.

[0074] Of course, the height of the adjustment component 41 near the center of the length direction of the first roll 1 in the same adjustment device 4 can also be lowered, thereby driving the middle part of the second roll 2 to move upward, so that the two ends of the second roll 2 bend downward relative to each other in the length direction. At the same time, the roll body of the second roll 2 will also undergo a certain degree of bending deformation, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0075] Of course, the height of the adjustment component 41 that is far from the center of the length direction of the first roll 1 in the same adjustment device 4 can be increased, and the height of the adjustment component 41 that is close to the center of the length direction of the first roll 1 in the same adjustment device 4 can be decreased, so that the two ends of the second roll 2 bend downward relative to each other in the length direction. At the same time, the roll body of the second roll 2 will also undergo a certain degree of bending deformation, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0076] For example, in Figure 1 In the example shown, when only the first roll 1 is adjusted, the height of the adjustment component 41 between the first bearing seat 31 and the frame 5 in the vertical direction can be adjusted to keep the height of the adjustment component 41 between the first bearing seat 31 and the second bearing seat 32 in the vertical direction unchanged. Specifically, the height of the adjustment component 41 in the same adjustment device 4 that is far from the center of the length direction of the first roll 1 can be lowered, thereby driving the two ends of the first roll 1 in the length direction to bend upward. At the same time, the roll body of the first roll 1 will also undergo a certain degree of bending deformation, making the roll gap between the first roll 1 and the second roll 2 more uniform along the length direction of the first roll 1.

[0077] Of course, the height of the adjustment component 41 near the center of the length direction of the first roll 1 in the same adjustment device 4 can also be increased, thereby driving the middle part of the first roll 1 to move downward, so that the two ends of the first roll 1 bend upward relative to each other in the length direction. At the same time, the roll body of the first roll 1 will also undergo a certain degree of bending deformation, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0078] Of course, the height of the adjustment component 41 in the same adjustment device 4 that is far from the center of the length direction of the first roll 1 can be lowered, and the height of the adjustment component 41 in the same adjustment device 4 that is close to the center of the length direction of the first roll 1 can be raised, so that the two ends of the first roll 1 bend upward relative to each other in the length direction, and the roll body of the first roll 1 will also be bent and deformed to a certain extent, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0079] For example, in Figure 1 In the example shown, the first roll 1 and the second roll 2 can also be adjusted simultaneously, as can the height of the adjustment assembly 41 between the first bearing seat 31 and the frame 5 in the vertical direction and the height of the adjustment assembly 41 between the first bearing seat 31 and the second bearing seat 32 in the vertical direction. The adjustment method of the first roll 1 is the same as the adjustment method of adjusting only the first roll 1, and the adjustment method of the second roll 2 is the same as the adjustment method of adjusting only the second roll 2. These will not be described in detail here.

[0080] Each adjustment component 41 of the adjustment device 4 is height-adjustable in the vertical direction, so that the second bearing seat 32 can always be in contact with the adjustment component 41 when adjusting the deflection deformation.

[0081] In related technologies, a set of inclined iron mechanisms is provided between the first and second bearing seats. Both ends of the first and second rolls are equipped with bending cylinders. The bending cylinders at the ends of the first roll provide an upward force, while the bending cylinders on the second roll provide a downward force. A hydraulic cylinder is also provided below the second bearing seat, providing an upward force. By adjusting the forces of the hydraulic cylinder and the bending cylinder, the deflection deformation during cold pressing of the electrode sheet is counteracted, improving the uniformity of the electrode sheet thickness. However, in related technologies, the ability to adjust for overpressure on the electrode sheet edges using the bending cylinders is limited, and the bending cylinder control system occupies a large space, resulting in a larger overall space occupancy of the cold pressing mechanism and increased costs.

[0082] The thickness variation of the electrode sheet after cold pressing using the battery electrode sheet rolling equipment 100 in this application was compared with that of the conventional cold pressing mechanism using a bent cylinder and wedge mechanism to determine the improvement effect of the mechanism on the thickness consistency of the electrode sheet. The results show that: under the action of the cold pressing mechanism without a bent cylinder and wedge, the thickness variation of the electrode sheet after cold pressing reaches approximately 2.46 μm; under the action of the conventional cold pressing mechanism using a bent cylinder and wedge, the thickness variation of the electrode sheet after cold pressing reaches approximately 1.74 μm; under the action of the cold pressing mechanism in this application, the thickness variation of the electrode sheet after cold pressing reaches approximately 1.45 μm. Figure 3 As shown in Table 1, the electrode sheet can achieve a smaller thickness difference under the cold pressing mechanism of this application.

[0083] Table 1

[0084]

[0085] Comparing the bending deformation of the rolls under different cold pressing mechanisms, under the action of this application, the first roll 1 bends upward, so the entire roll surface has a "U" shape, and the maximum deformation difference between the middle and the two ends of the roll surface reaches 5 μm; the second roll 2 bends downward, so the entire roll surface has an "n" shape, and the maximum deformation difference between the middle and the two ends of the roll surface reaches 6 μm; while the deformation of the upper roll of a conventional bending cylinder wedge is less than 1 μm, and the deformation of the lower roll is about 2 μm. Figure 4 and Figure 5 As shown. Compared with the conventional cold pressing mechanism of the curved cylinder wedge, the cold pressing mechanism of this application has a more significant impact on the deformation of the roll. The greater the deformation of the roll surface, the more obvious the effect of reducing the disturbance deformation caused by the interaction between the roll and the electrode sheet, and the better the effect of improving the uniformity of the electrode sheet thickness.

[0086] 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, and adjustment devices 4 are respectively provided between the second bearing seats 32 at both ends of the first roll 1 and the frame 5. 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. The deflection deformation of the first roll 1 and the second roll 2 can be adjusted by adjusting at least part of the adjustment components 41 along the arrangement direction of 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 in the axial direction of the first roll 1, thereby improving the lateral thickness uniformity of the battery electrode and reducing the strip breakage phenomenon of the electrode during the cold pressing process. In addition, the battery electrode rolling equipment 100 of this application can reduce the space occupation and economic cost of the overall mechanism, while also improving the effect of adjusting the uniformity of electrode thickness.

[0087] In some embodiments, such as Figure 2 As shown, 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. The inclined surfaces of the first wedge 411 and the second wedge 412 are in contact with each other. At least one of the first wedge 411 and the second wedge 412 is movable to adjust the size of the adjustment assembly 41 in the arrangement direction of the first roll 1 and the second roll 2.

[0088] 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 Figure 1 and Figure 2In the example shown, the first wedge 411 and the second wedge 412 are arranged in the vertical direction. At least one of the first wedge 411 and the second wedge 412 moves in a direction perpendicular to the axial direction of the first roll 1 and the arrangement direction of the first roll 1 and the second roll 2. The first wedge 411 is located above the second wedge 412. The lower surface of the first wedge 411 and the upper 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 the direction perpendicular to the arrangement direction of the first roll 1 and the second roll 2 and perpendicular to the axial direction of the first roll 1. When the first wedge 411 and the second wedge 412 move relative to each other, the total height of the first wedge 411 and the second wedge 412 in the vertical direction can be adjusted, thereby adjusting the height of the adjusting assembly 41. The structure is simple and the adjustment is convenient.

[0089] Furthermore, the adjustment assembly 41 of this application is located between the first bearing housing 31 and the second bearing housing 32, and between the first bearing housing 31 and the frame 5. When replacing the first roll 1 and the second roll 2, after disassembling the first bearing housing 31, the first roll 1 is moved along the axial direction of the first roll 1 to disassemble it; after disassembling the second bearing housing 32, the second roll 2 is moved along the axial direction of the second roll 2 to disassemble it. This application eliminates the bending cylinder assembly and the corresponding hydraulic control system, which significantly shortens the time for replacing the first roll 1 and the second roll 2, and reduces the corresponding hoisting structure during the process, thereby improving the inherent safety of the equipment and reducing the workload of the relevant personnel.

[0090] 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.

[0091] In some embodiments, such as Figure 1 and Figure 2 As shown, the second wedge 412 is located on the side of the first wedge 411 near the second bearing seat 32. The second wedge 412 is fixed relative to the bearing seat assembly 3, while the first wedge 411 is movable.

[0092] It is understandable that in the adjustment assembly 41 between the first bearing housing 31 and the second bearing housing 32, the second wedge 412 is located on the side of the first wedge 411 near the second bearing housing 32, and the first wedge 411 is located on the side of the second wedge 412 near the first bearing housing 31. The second wedge 412 can be fixed relative to the bearing housing assembly 3 by being fixed to the second bearing housing 32, while the first wedge 411 can be movably mounted on the first bearing housing 31. In the adjustment assembly 41 between the first bearing housing 31 and the frame 5, the second wedge 412 is located on the side of the first wedge 411 near the first bearing housing 31, and the first wedge 411 is located on the side of the second wedge 412 near the frame 5. The second wedge 412 can be fixed relative to the bearing housing assembly 3 by being fixed to the first bearing housing 31, while the first wedge 411 can be movably mounted on the frame 5.

[0093] The second wedge 412 is fixed relative to the bearing housing assembly 3, which can realize the fixation of 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 movable, which facilitates the relative movement of the first wedge 411 and the second wedge 412, 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.

[0094] Of course, this utility model is not limited to this. The first wedge 411 can be fixed relative to the bearing seat assembly 3, and the second wedge 412 can move relative to the bearing seat. The relative movement of the first wedge 411 and the second wedge 412 is achieved by the movement of 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, both the first wedge 411 and the second wedge 412 can be movable relative to the bearing seat assembly 3. 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.

[0095] In the above technical solution, the second wedge 412 is fixed relative to the bearing seat assembly 3, while the first wedge 411 is movable relative to the bearing seat assembly 3. This 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. Simultaneously, the movable first wedge 411 enables relative movement between the first wedge 411 and the second wedge 412, 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.

[0096] In some embodiments, such as Figure 6 As shown, the adjustment component 41 also includes a drive component 413, which is used to drive the first wedge 411 to move.

[0097] The drive component 413 can provide power for the movement of the first wedge 411. The drive component 413 can be connected to a PLC. The PLC can control the drive component 413 of the corresponding adjustment component 41 to work, thereby controlling the movement of the first wedge 411 and adjusting the size of the adjustment component 41 according to the deformation.

[0098] The drive component 413 of the adjustment component 41 located between the first bearing housing 31 and the second bearing housing 32 can be disposed on the second bearing housing 32, and the drive component 413 of the adjustment component 41 located between the first bearing housing 31 and the frame 5 can be disposed on the first bearing housing 31.

[0099] 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.

[0100] In some embodiments, such as Figure 6 As shown, 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 or a second bearing housing 32. 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.

[0101] It is understandable that when the adjusting component 41 is located between the first bearing housing 31 and the second bearing housing 32, the drive motor 4131 is located on the second bearing housing 32, and when the adjusting component 41 is located between the first bearing housing 31 and the frame 5, the drive motor 4131 is located on the first bearing housing 31.

[0102] 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.

[0103] 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.

[0104] Of course, this utility model 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.

[0105] 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.

[0106] In some embodiments, as shown in reference 6, 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.

[0107] 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.

[0108] The reduction mechanism 4133 can be a gear reduction mechanism 4133, 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.

[0109] 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.

[0110] In some embodiments, reference Figure 6 The first bearing seat 31 is provided with a limiting groove 312 on the side facing the second bearing seat 32 and the frame 5 is provided with a limiting groove 312 on the side facing the first bearing seat 31. The limiting groove 312 extends along the moving direction of the first wedge 411, and the first wedge 411 is movably disposed in the corresponding limiting groove 312.

[0111] It is understood that the first bearing housing 31 is provided with a limiting groove 312 on the side facing the second bearing housing 32, and the first wedge 411 of the adjustment assembly 41 located between the first bearing housing 31 and the second bearing housing 32 is movably provided in the limiting groove 312 on the side of the first bearing housing 31 facing the second bearing housing 32; the frame 5 is provided with a limiting groove 312 on the side facing the first bearing housing 31, and the first wedge 411 located between the frame 5 and the first bearing housing 31 is movably provided in the limiting groove 312 on the frame 5.

[0112] 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 unreliability of the adjustment component 41.

[0113] In the above technical solution, by setting the limiting groove 312, the first inclined iron 411 can be limited, making the movement direction of the first inclined iron 411 more accurate, the cooperation with the second inclined iron 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 unreliability of the adjustment component 41.

[0114] In some embodiments, reference Figure 6 Each first inclined iron 411 is provided with inclined iron bars 311 on both sides along the axial direction of the first roll 1. The inclined iron bars 311 extend along the moving direction of the first inclined iron 411, and a limiting groove 312 is defined between the two inclined iron bars 311.

[0115] It is understood that the first bearing housing 31 has at least three wedge bars 311 on the side facing the second bearing housing 32, and the first wedge bar 411 of the adjustment assembly 41 located between the first bearing housing 31 and the second bearing housing 32 is movably disposed in the limiting groove 312 defined between the wedge bars 311 on the side of the first bearing housing 31 facing the second bearing housing 32; the frame 5 has at least three wedge bars 311 on the side facing the first bearing housing 31, and the first wedge bar 411 located between the frame 5 and the first bearing housing 31 is movably disposed in the limiting groove 312 defined by the wedge bars 311 on the frame 5.

[0116] The inclined iron bar 311 protrudes from the surface of the first bearing seat 31 and the frame 5. The inclined iron bar 311 can be welded to the first bearing seat 31 or the frame 5. A limiting groove 312 is defined between two adjacent inclined iron bars 311. The first inclined iron 411 is movably disposed between 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. Two adjustment components 41 are provided between the first bearing housing 31 and the frame 5. 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. The two inclined iron bars 311 in each group define a limiting groove 312. The four inclined iron bars 311 define two limiting grooves 312. The two adjustment components 41 of the adjustment device 4 are respectively movably provided in the two limiting grooves 312.

[0117] Of course, this utility model is not limited to this. The limiting groove 312 can also be formed by the recessed surface of the first bearing seat 31 or the frame 5. For example, the limiting groove 312 can be cut on the surface of the first bearing seat 31 or the frame 5, or the recessed limiting groove 312 can be formed by injection molding on the surface of the first bearing seat 31 or the frame 5 during injection molding.

[0118] In the above technical solution, multiple inclined iron bars 311 are respectively set on the surfaces of the first bearing seat 31 and the frame 5. The multiple inclined iron bars 311 define two limiting grooves 312, which facilitates the setting of the limiting grooves 312 and reduces the damage to the structure of the first bearing seat 31 and the frame 5 itself. While improving the structural strength of the first bearing seat 31 and the frame 5, it also facilitates the movement of the first inclined iron 411.

[0119] In some embodiments, reference Figure 7 The adjustment assembly 41 also includes a limiting member 414, which limits the relative movement of the first wedge 411 and the second wedge 412.

[0120] 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 movement stroke 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.

[0121] In the above technical solution, by setting the limiting member 414, the relative movement stroke 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 assembly 41 being damaged due to the large movement displacement of the first wedge 411.

[0122] In some embodiments, reference Figure 7 The limiting member 414 includes a first limiting member 4142 and a second limiting member 4143. The first limiting member 4142 consists of two members spaced apart along the moving direction of the first wedge 411 or the second wedge 412. The second limiting member 4143 moves relative to the two first limiting members 4142 and is adapted to stop against the two first limiting members 4142. The first limiting member 4142 is provided on one of the first wedge 411 and the second wedge 412, and the second limiting member 4143 is provided on the other of the first wedge 411 and the second wedge 412.

[0123] It is understandable that the first limiting member 4142 can be provided on the first inclined iron 411, and the second limiting member 4143 can be provided on the second inclined iron 412.

[0124] exist Figure 7 In the example shown, the first limiting member 4142 is provided on the first wedge 411, and there are two first limiting members 4142 spaced apart along the moving direction of the first wedge 411. The second limiting member 4143 is provided on the second wedge 412. Along the moving direction of the first wedge 411, the second limiting member 4143 is located between the two first limiting members 4142. During the movement of the first wedge 411 relative to the second wedge 412, the two first limiting members 4142 abut against the second limiting member 4143 at the two extreme positions of the movement of the first wedge 411, thereby limiting the movement stroke of the first wedge 411 relative to the second wedge 412 and reducing the problem of the first wedge 411 and the second wedge 412 detaching or the adjustment assembly 41 being damaged.

[0125] In the above technical solution, by setting two first limiting members 4142 on one of the first wedge 411 and the second wedge 412 at intervals along the moving direction of the first wedge 411, and setting a second limiting member 4143 on the other of the first wedge 411 and the second wedge 412, the second limiting member 4143 is located between the two first limiting members 4142 and is adapted to abut against the first limiting members 4142, which 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, reducing 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 displacement of the first wedge 411.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] In some embodiments, reference Figure 7 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 one of the first wedge 411 and the second wedge 412, and the mating part 4152 is disposed on the other of the first wedge 411 and the second wedge 412.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] For example, such as Figure 7 As shown, the first wedge 411 is located above the second wedge 412. Both the first wedge 411 and the second wedge 412 can be made of Q235 steel. Assuming the coefficient of friction of Q235 steel is 0.5, when the slope angle tanα of the second wedge 412 is less than 0.5, the maximum slope of the second wedge 412 is calculated to be 27°. That is, the maximum slope of the wedges cannot exceed 27°. When the maximum slope is exceeded, the second wedge 412 and the first wedge 411 will experience uncontrollable relative slippage under vertical pressure, causing a safety accident.

[0138] 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.

[0139] In some embodiments, the battery electrode rolling equipment 100 further includes a positioning assembly for positioning a plurality of adjustment assemblies 41 between the first bearing housing 31 and the second bearing housing 32 on the same straight line extending along the axial direction of the first roll 1 and for positioning a plurality of adjustment assemblies 41 between the first bearing housing 31 and the frame 5 on the same straight line extending along the axial direction of the first roll 1.

[0140] The positioning component ensures that all adjusting components 41 located between the first bearing housing 31 and the second bearing housing 32 are in the same position, as well as that between the first bearing housing 31 and the frame 5. This digitizes the position of the adjusting components 41, 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.

[0141] The positioning components for locating the multiple adjustment assemblies 41 between the first bearing housing 31 and the second bearing housing 32 can be located on the first bearing housing 31, the second bearing housing 32, or both. Similarly, the positioning components for locating the multiple adjustment assemblies 41 between the first bearing housing 31 and the frame 5 can be located on the first bearing housing 31, the frame 5, or both. This improves the flexibility of the positioning component placement.

[0142] 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 between the first bearing seat 31 and the second bearing seat 32 are positioned on the same straight line extending along the axial direction of the first roll 1, and multiple adjustment components 41 between the first bearing seat 31 and the frame 5 are positioned on the same straight line extending along the axial direction of the first roll 1, so that all adjustment components 41 located between the first bearing seat 31 and the second bearing seat 32 are in the same position, and so that all adjustment components 41 between the first bearing seat 31 and the frame 5 are in the same position, so that the position of the adjustment component 41 is digitized, thereby improving the control capability to counteract deflection deformation.

[0143] In some embodiments, the positioning assembly includes a plurality of positioning elements. The plurality of positioning elements located between the first bearing housing 31 and the second bearing housing 32 are located on the same straight line extending along the axial direction of the first roll 1. The plurality of positioning elements located between the first bearing housing 31 and the frame 5 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 on one side along the moving direction of the first wedge 411 or the second wedge 412.

[0144] Multiple positioning elements position the adjustment components 41 on one side along the moving direction of the first wedge 411 or the second wedge 412. This 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. The positioning elements can be microswitches, or they can be positioning posts.

[0145] In the above technical solution, by setting multiple positioning elements in the positioning component, and providing a positioning element on one side of each adjustment component 41 along the first direction, and having multiple positioning elements located on the same straight line extending along the axial direction of the first roll 1, not only can the positioning reliability of the adjustment component 41 be improved, but the structure of the battery electrode rolling equipment 100 can also be simplified.

[0146] In some examples, reference Figure 1The battery electrode rolling equipment 100 also includes a drive device 6. The drive device 6 is located on the side of the second roll 2 away from the first roll 1 and includes two drive members 61. The two drive members 61 correspond one-to-one with two bearing seat assemblies 3. Along the length direction of the first roll 1, the drive members 61 are located between the two adjustment assemblies 41 of the same adjustment device 4 and are used to drive the second bearing seat 32 to move toward the first bearing seat 31.

[0147] Among them, the drive device 6 can be a hydraulic cylinder.

[0148] The driving component 61 can drive the second bearing seat 32 to move toward the first bearing seat 31, facilitating the rolling of the battery electrode sheets by the first roller 1 and the second roller 2. The driving component 61 is located between the two adjusting components 41 on the same side of the adjusting device 4, which allows the driving component 61 to apply pressure while using one of the two adjusting components 41 of the same adjusting device 4 as a fulcrum to adjust the deflection deformation of the first roller 1 and the second roller 2.

[0149] In the above technical solution, by setting up the driving device 6, it is convenient to drive the second bearing seat 32 to move the second roll 2 toward the first roll 1, so as to facilitate the rolling of the battery electrode sheet by the first roll 1 and the second roll 2. In addition, the driving member 61 is located between the two adjustment components 41 of the adjustment device 4 on the same side, so that while the driving member 61 applies pressure, the deflection deformation of the first roll 1 and the second roll 2 can be adjusted by using one of the two adjustment components 41 of the same adjustment device 4 as a fulcrum.

[0150] In some embodiments, reference Figure 1 The distance between the drive member 61 and the adjustment component 41 of the two adjustment components 41 on the same side of the adjustment device 4, the adjustment component 41 closest to the center of the first roll 1 in the length direction, is less than the distance between the drive member 61 and the other adjustment component 41.

[0151] Among them, the adjustment component 41 that is close to the center of the length direction of the first roll 1 in the same adjustment device 4 is mainly used for protection, while the adjustment component 41 that is far away from the center of the length direction of the first roll 1 is mainly used for load bearing.

[0152] In the above scheme, the distance between the driving member 61 and the two adjustment components 41 of the adjustment device 4 on the same side, the adjustment component 41 closest to the center of the length direction of the first roll 1, is less than the distance between the driving member 61 and the other adjustment component 41, which facilitates the adjustment of the deflection deformation of the first roll 1 and the second roll 2 under the action of the driving device 6 and the adjustment device 4.

[0153] The following is for reference. Figures 1-7 Description of a battery electrode rolling apparatus 100 according to some embodiments of the present invention.

[0154] Reference Figure 1and Figure 2 In this embodiment, the battery electrode rolling equipment 100 includes: a frame 5, a first roll 1, a second roll 2, a bearing housing assembly 3, an adjustment device 4, and a drive device 6.

[0155] The first roll 1 and the second roll 2 are arranged in parallel, with their axes both extending horizontally. The first roll 1 is located above the second roll 2, and a roll gap exists between them, allowing the battery electrode to be located within the gap. The first roll 1 and the second roll 2 can rotate around their central axes, and their rotation directions can be opposite, driving the battery electrode forward during rotation.

[0156] Two bearing housing assemblies 3 are mounted on the frame 5. 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. A first bearing is provided between the first roll 1 and the first bearing housing 31, and a second bearing is provided between the second roll 2 and the second bearing housing 32, so as to facilitate the rotation of the first roll 1 and the second roll 2.

[0157] An adjustment device 4 is provided between the first bearing housing 31 and the second bearing housing 32 of each bearing housing assembly 3, and an adjustment device 4 is provided between the first bearing housing 31 and the frame 5 of each bearing housing assembly 3. The adjustment device 4 between the first bearing housing 31 and the frame 5 and the adjustment device 4 between the first bearing housing 31 and the second bearing housing 32 are respectively located on opposite sides of the first bearing housing 31. 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.

[0158] In addition, two sets of adjustment components 41 are provided on the same adjustment device 4. The adjustment components 41 on the adjustment device 4 between the first bearing seat 31 and the second bearing seat 32, which are close to the center of the length direction of the first roll 1, can play a protective role, prevent the first roll 1 and the second roll 2 from rolling together, and improve the stability of the entire battery electrode rolling equipment 100.

[0159] The drive unit 6 is located on the side of the second roll 2 opposite to the first roll 1 and includes two drive members 61. Each drive member 61 corresponds to one of the two bearing housing assemblies 3. The drive members 61 drive the second bearing housing 32 towards the first bearing housing 31, providing upward cold pressure to compress the battery electrode. The drive members 61 may include hydraulic cylinders, which can be connected between the frame 5 and the second bearing housing 32.

[0160] The driving component 61 is located between the two adjustment components 41 of the same adjustment device 4, and the distance between the driving component 61 and the adjustment component 41 of the two adjustment components 41 on the same side of the adjustment device 4 that is closer to the center of the length direction of the first roll 1 is less than the distance between the driving component 61 and the other adjustment component 41, so that the deflection deformation of the first roll 1 and the second roll 2 can be adjusted by the adjustment device 4 and the driving device 6.

[0161] The adjustment assembly 41 includes a first wedge 411 and a second wedge 412, which are arranged vertically. The first wedge 411 is located above the second wedge 412. The lower surface of the first wedge 411 and the upper 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 a direction perpendicular to the arrangement direction of the first roll 1 and the second roll 2 and perpendicular to the axial direction of the first roll 1, and can move relative to each other to adjust the dimensions of the adjustment assembly 41 in the arrangement direction of the first roll 1 and the second roll 2. By changing the relative position of the first wedge 411 and the second wedge 412, the dimensions of the first wedge 411 and the second wedge 412 in the vertical direction can be adjusted, thereby adjusting the height of the adjustment assembly 41. The structure is simple and the adjustment is convenient.

[0162] Furthermore, the adjustment assembly 41 of this application is located between the first bearing housing 31 and the second bearing housing 32, and between the first bearing housing 31 and the frame 5. When replacing the first roll 1 and the second roll 2, after disassembling the first bearing housing 31, the first roll 1 is moved along the axial direction of the first roll 1 to disassemble it; after disassembling the second bearing housing 32, the second roll 2 is moved along the axial direction of the second roll 2 to disassemble it. This application eliminates the bending cylinder assembly and the corresponding hydraulic control system, which significantly shortens the time for replacing the first roll 1 and the second roll 2, and reduces the corresponding hoisting structure during the process, thereby improving the inherent safety of the equipment and reducing the workload of the relevant personnel.

[0163] In the adjustment assembly 41 between the first bearing housing 31 and the second bearing housing 32, the second wedge 412 is located below the first wedge 411 and is fixed to the second bearing housing 32, while the first wedge 411 is movably mounted on the first bearing housing 31. In the adjustment assembly 41 between the first bearing housing 31 and the frame 5, the second wedge 412 is located below the first wedge 411 and is fixed to the first bearing housing 31, while the first wedge 411 is movably mounted on the frame 5.

[0164] The second wedge 412 is fixed relative to the bearing housing assembly 3, which can realize the fixation of 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 movable, which facilitates the relative movement of the first wedge 411 and the second wedge 412, 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.

[0165] The adjustment assembly 41 also includes a drive assembly 413, which drives the first wedge 411 to move. The drive assembly 413 provides power for the movement of the first wedge 411. The drive assembly 413 can be connected to a PLC, which can control the operation of the corresponding drive assembly 413 of the adjustment assembly 41, thereby controlling the movement of the first wedge 411 and adjusting the size of the adjustment assembly 41 according to the deformation pattern. Specifically, the drive assembly 413 of the adjustment assembly 41 located between the first bearing seat 31 and the second bearing seat 32 can be mounted on the second bearing seat 32, and the drive assembly 413 of the adjustment assembly 41 located between the first bearing seat 31 and the frame 5 can be mounted on the first bearing seat 31.

[0166] 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 or a second bearing housing 32. 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.

[0167] 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.

[0168] 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.

[0169] The drive assembly 413 also includes a reduction mechanism 4133. The input end of the reduction mechanism 4133 is connected to the output shaft of the drive motor 4131, and the output end of the reduction mechanism 4133 is connected to the transmission mechanism 4132. The drive motor 4131 has a high rotational speed. By setting the reduction mechanism 4133 between the drive motor 4131 and the transmission mechanism 4132, the rotational speed transmitted to the transmission mechanism 4132 can be reduced, thereby precisely adjusting the position of the first wedge 411 to meet the process requirements of the deflection deformation of the first roll 1 or the second roll 2 under different conditions.

[0170] The reduction mechanism 4133 can be a gear reduction mechanism 4133, 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.

[0171] A limiting groove 312 is provided on the side of the first bearing housing 31 facing the second bearing housing 32. The first wedge 411 of the adjusting assembly 41 located between the first bearing housing 31 and the second bearing housing 32 is movably disposed within the limiting groove 312 on the side of the first bearing housing 31 facing the second bearing housing 32. A limiting groove 312 is also provided on the side of the frame 5 facing the first bearing housing 31. The first wedge 411 located between the frame 5 and the first bearing housing 31 is movably disposed within the limiting groove 312 on the frame 5. The limiting groove 312 can limit the movement direction of the first wedge 411, making the movement of the first wedge 411 more reliable. This makes the cooperation between the first wedge 411 and the second wedge 412 more reliable, thereby making the adjusting assembly 41 more reliable and reducing the possibility of being unable to adjust the deflection deformation of the first roll 1 and the second roll 2 due to the unreliability of the adjusting assembly 41.

[0172] The first bearing housing 31 has at least three wedge bars 311 on the side facing the second bearing housing 32. The first wedge bar 411 of the adjustment assembly 41 located between the first bearing housing 31 and the second bearing housing 32 is movably disposed in the limiting groove 312 defined between the wedge bars 311 on the side facing the second bearing housing 32 of the first bearing housing 31. The frame 5 has at least three wedge bars 311 on the side facing the first bearing housing 31. The first wedge bar 411 located between the frame 5 and the first bearing housing 31 is movably disposed in the limiting groove 312 defined by the wedge bars 311 on the frame 5.

[0173] The adjustment assembly 41 also includes a limiting member 414, which limits the relative movement stroke of the first wedge 411 and the second wedge 412. The limiting member 414 includes a first limiting member 4142 and a second limiting member 4143. The first limiting members 4142 are two spaced apart along the moving direction of the first wedge 411 or the second wedge 412. The second limiting member 4143 moves relative to the two first limiting members 4142 and is adapted to stop against the two first limiting members 4142. The first limiting members 4142 are disposed on the first wedge 411, and the second limiting member 4143 is disposed on the second wedge 412.

[0174] During the movement of the first wedge 411 relative to the second wedge 412, the two first limiting members 4142 respectively abut against the second limiting member 4143 at the two extreme positions of the movement of the first wedge 411, thereby limiting the movement stroke of the first wedge 411 relative to the second wedge 412 and reducing the problem of the first wedge 411 and the second wedge 412 becoming detached or the adjustment assembly 41 being damaged.

[0175] The adjustment assembly 41 also 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. 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 one of the first wedge 411 and the second wedge 412, and the mating part 4152 is disposed on the other of the first wedge 411 and the second wedge 412.

[0176] 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.

[0177] The first wedge 411 and the second wedge 412 have the same structure. The coefficient of friction between the inclined surfaces of the first wedge 411 and the second wedge 412 is A, and the inclination angle between the inclined surfaces of the first wedge 411 and the second wedge 412 is α, satisfying tanα < A. When the inclination angle α of the inclined surfaces of the first wedge 411 and the second wedge 412 satisfies tanα < A, the frictional force between the inclined surfaces of the first wedge 411 and the second wedge 412 can be greater than the external force, achieving frictional self-locking of the first wedge 411 and the second wedge 412, reducing the problem of relative slippage between the first wedge 411 and the second wedge 412, and preventing equipment safety accidents.

[0178] The battery electrode rolling equipment 100 also includes a positioning assembly. This assembly positions multiple adjusting components 41 between the first bearing housing 31 and the second bearing housing 32 on a straight line extending along the axis of the first roll 1, and also positions multiple adjusting components 41 between the first bearing housing 31 and the frame 5 on a straight line extending along the axis of the first roll 1. The positioning assembly ensures that all adjusting components 41 located between the first bearing housing 31 and the second bearing housing 32 are in the same position, and that all adjusting components 41 between the first bearing housing 31 and the frame 5 are in the same position, thus digitizing the position of the adjusting components 41 and improving the control capability to counteract deflection deformation. Furthermore, the positioning assembly, in conjunction with a high-precision servo motor, further achieves refined control, further improving the control capability to counteract deflection deformation.

[0179] The positioning assembly includes multiple positioning elements. Multiple positioning elements located between the first bearing housing 31 and the second bearing housing 32 are situated on the same straight line extending along the axial direction of the first roll 1. Multiple positioning elements located between the first bearing housing 31 and the frame 5 are also situated on the same straight line extending along the axial direction of the first roll 1. Each adjusting assembly 41 has a positioning element on one side along the moving direction of the first wedge 411 or the second wedge 412. The multiple positioning elements position the adjusting assembly 41 on one side along the moving direction of the first wedge 411 or the second wedge 412, which not only improves the reliability of the positioning of the adjusting assembly 41 but also simplifies the structure of the battery electrode rolling equipment 100. The positioning elements can be microswitches, or they can be positioning posts.

[0180] In the initial state after installation, the multiple adjustment components 41 located between the first bearing seat 31 and the second bearing seat 32 are in the same position and have the same dimensions along the arrangement direction of the first roll 1 and the second roll 2. The multiple adjustment components 41 located between the first bearing seat 31 and the frame 5 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 sheet. The thickness measuring device can feed back the thickness data of the battery electrode sheet to the PLC (Programmable Logic Controller) of the battery electrode sheet rolling equipment 100. 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 sheet is thicker in the middle and thinner at both ends, multiple adjustment devices 4 are used to make the two ends of the first roll 1 and the two ends of the second roll 2 subject to forces with opposite deflection deformation directions. Under the action of this force, the first roll 1 and the second roll 2 undergo deformation opposite to the deflection deformation, thereby counteracting the deflection deformation caused by the interaction between the first roll 1 and the second roll 2 and the electrode sheet, reducing the risk of overpressure at the edge of the electrode sheet, and thus improving the thickness consistency of the electrode sheet.

[0181] Specifically, the two ends of the first roll 1 can be driven to bend away from the second roll 2, or the two ends of the second roll 2 can be driven to bend away from the first roll 1, or both rolls can be driven simultaneously, such that the two ends of the first roll 1 bend away from the second roll 2, and the two ends of the second roll 2 bend away from the first roll 1, reducing large-scale deflection deformation of the rolls. Simultaneously, the bending deformation of the first roll 1 and the second roll 2 will, to some extent, offset the deflection deformation caused by the interaction between the first roll 1 and the second roll 2 and the electrode sheet, thus preventing edge overpressure on the electrode sheet, improving the consistency of the electrode sheet thickness, and reducing the problem of strip breakage.

[0182] For example, in Figure 1 In the example shown, when only the second roll 2 is adjusted, the height of the adjustment component 41 between the first bearing seat 31 and the frame 5 in the vertical direction can remain unchanged. Specifically, the height of the adjustment component 41 between the first bearing seat 31 and the second bearing seat 32 in the vertical direction can be adjusted so that the height of the adjustment component 41 that is far from the center of the length direction of the first roll 1 in the same adjustment device 4 can be increased, thereby driving the two ends of the second roll 2 in the length direction to bend downward. At the same time, the roll body of the second roll 2 will also undergo a certain degree of bending deformation, making the roll gap between the first roll 1 and the second roll 2 more uniform along the length direction of the first roll 1.

[0183] Of course, the height of the adjustment component 41 near the center of the length direction of the first roll 1 in the same adjustment device 4 can also be lowered, thereby driving the middle part of the second roll 2 to move upward, so that the two ends of the second roll 2 bend downward relative to each other in the length direction. At the same time, the roll body of the second roll 2 will also undergo a certain degree of bending deformation, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0184] Of course, the height of the adjustment component 41 that is far from the center of the length direction of the first roll 1 in the same adjustment device 4 can be increased, and the height of the adjustment component 41 that is close to the center of the length direction of the first roll 1 in the same adjustment device 4 can be decreased, so that the two ends of the second roll 2 bend downward relative to each other in the length direction. At the same time, the roll body of the second roll 2 will also undergo a certain degree of bending deformation, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0185] For example, in Figure 1 In the example shown, when only the first roll 1 is adjusted, the height of the adjustment component 41 between the first bearing seat 31 and the frame 5 in the vertical direction can be adjusted to keep the height of the adjustment component 41 between the first bearing seat 31 and the second bearing seat 32 in the vertical direction unchanged. Specifically, the height of the adjustment component 41 in the same adjustment device 4 that is far from the center of the length direction of the first roll 1 can be lowered, thereby driving the two ends of the first roll 1 in the length direction to bend upward. At the same time, the roll body of the first roll 1 will also undergo a certain degree of bending deformation, making the roll gap between the first roll 1 and the second roll 2 more uniform along the length direction of the first roll 1.

[0186] Of course, the height of the adjustment component 41 near the center of the length direction of the first roll 1 in the same adjustment device 4 can also be increased, thereby driving the middle part of the first roll 1 to move downward, so that the two ends of the first roll 1 bend upward relative to each other in the length direction. At the same time, the roll body of the first roll 1 will also undergo a certain degree of bending deformation, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0187] Of course, the height of the adjustment component 41 in the same adjustment device 4 that is far from the center of the length direction of the first roll 1 can be lowered, and the height of the adjustment component 41 in the same adjustment device 4 that is close to the center of the length direction of the first roll 1 can be raised, so that the two ends of the first roll 1 bend upward relative to each other in the length direction, and the roll body of the first roll 1 will also be bent and deformed to a certain extent, so that the roll gap between the first roll 1 and the second roll 2 is more uniform along the length direction of the first roll 1.

[0188] For example, in Figure 1In the example shown, the first roll 1 and the second roll 2 can also be adjusted simultaneously, as can the height of the adjusting assembly 41 between the first bearing seat 31 and the frame 5 in the vertical direction, and the height of the adjusting assembly 41 between the first bearing seat 31 and the second bearing seat 32 in the vertical direction. The adjustment method for the first roll 1 is the same as the adjustment method for adjusting only the first roll 1, and the adjustment method for the second roll 2 is the same as the adjustment method for adjusting only the second roll 2, which will not be described in detail here. In the description of this specification, the reference to the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., means that the 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 utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0189] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pole piece rolling apparatus, characterized by, include: Rack (5); A first roll (1) and a second roll (2) are arranged in parallel. The bearing housing assembly (3) consists of two bearing housing assemblies (3) 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 (5) 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 seat (31) and the second bearing seat (32) of each bearing seat assembly (3) and between the first bearing seat (31) and the frame (5). The adjustment device (4) includes two adjustment components (41) 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).

2. The battery electrode rolling equipment according to claim 1, characterized in that, The adjustment component (41) includes: A first inclined iron (411) and a second inclined iron (412) are arranged along the arrangement direction of the first roll (1) and the second roll (2). The inclined surfaces of the first inclined iron (411) and the second inclined iron (412) are in contact with each other. At least one of the first inclined iron (411) and the second inclined iron (412) is movable to adjust the size of the adjustment assembly (41) in the arrangement direction of the first roll (1) and the second roll (2).

3. The battery electrode rolling equipment according to claim 2, characterized in that, The second wedge (412) is located on the side of the first wedge (411) near the second bearing seat (32). The second wedge (412) is fixed relative to the bearing seat assembly (3), while the first wedge (411) is movable.

4. The battery pole piece rolling apparatus according to claim 3, characterized by, The adjustment component (41) further includes a drive component (413) for driving the first wedge (411) to move.

5. The battery electrode rolling equipment according to claim 4, characterized in that, The driving component (413) includes: A drive motor (4131) is mounted on the first bearing housing (31) or the second bearing housing (32); 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).

6. The battery electrode rolling equipment according to claim 5, characterized in that, The drive component (413) also includes: The speed reduction mechanism (4133) has its input end connected to the output shaft of the drive motor (4131) and its output end connected to the transmission mechanism (4132).

7. The battery pole piece rolling apparatus of claim 3, wherein, The first bearing seat (31) is provided with a limiting groove (312) on the side facing the second bearing seat (32) and the frame (5) is provided with a limiting groove (312) on the side facing the first bearing seat (31). The limiting groove (312) extends along the moving direction of the first wedge (411), and the first wedge (411) is movably disposed in the corresponding limiting groove (312).

8. The battery pole piece rolling apparatus of claim 7, wherein, Each of the first wedges (411) is provided with wedge bars (311) on both sides along the axial direction of the first roll (1). The wedge bars (311) extend along the moving direction of the first wedge (411), and the limiting groove (312) is defined between the two wedge bars (311).

9. The battery pole piece rolling apparatus of claim 2, wherein, The adjustment component (41) also includes: A limiting member (414) is used to limit the relative travel of the first wedge (411) and the second wedge (412).

10. The battery pole piece rolling apparatus of claim 9, wherein, The limiting member (414) includes: The first limiting member (4142) is two members that are spaced apart along the moving direction of the first wedge (411) or the second wedge (412); The second limiting member (4143) is movable relative to the two first limiting members (4142) and is adapted to abut against the two first limiting members (4142). The first limiting member (4142) is disposed on one of the first wedge (411) and the second wedge (412), and the second limiting member (4143) is disposed on the other of the first wedge (411) and the second wedge (412).

11. The battery pole piece rolling apparatus of claim 2, wherein, The adjustment component (41) also includes: The detection element (415) is used to detect whether the inclined surface of the first wedge (411) and the inclined surface of the second wedge (412) are in contact.

12. The battery electrode rolling equipment according to claim 11, characterized in that, 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 one of the first wedge (411) and the second wedge (412), and the mating part (4152) is disposed on the other of the first wedge (411) and the second wedge (412).

13. The battery electrode rolling equipment according to claim 2, characterized in that, The first wedge (411) and the second wedge (412) have the same structure. The coefficient of friction between the inclined surface of the first wedge (411) and the inclined surface of the second wedge (412) is A. The inclination angle between the inclined surfaces of the first wedge (411) and the second wedge (412) is α, and satisfies: tanα<A.

14. The battery electrode rolling equipment according to claim 1, characterized in that, Also includes: The driving device (6) is located on the side of the second roll (2) away from the first roll (1) and includes two driving members (61). The two driving members (61) correspond one-to-one with the two bearing seat assemblies (3). Along the length direction of the first roll (1), the driving member (61) is located between the two adjustment assemblies (41) of the same adjustment device (4) and is used to drive the second bearing seat (32) to move toward the first bearing seat (31).

15. The battery electrode rolling equipment according to claim 14, characterized in that, The distance between the drive member (61) and the adjustment component (41) of the adjustment device (4) on the same side, the adjustment component (41) closest to the center of the length direction of the first roll (1), is less than the distance between the drive member (61) and the other adjustment component (41).

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