Rolling equipment and battery production system

Abstract

The invention relates to rolling equipment and a battery production system.The rolling equipment comprises a rolling mechanism, a first adjusting mechanism and a detection mechanism, and the rolling mechanism comprises a first pressing roller, a second pressing roller, a third pressing roller and a fourth pressing roller which are arranged in sequence and form rolling channels; the position of the second pressing roller is fixed, and the first pressing roller, the third pressing roller and the fourth pressing roller can move in the direction close to or away from the second pressing roller; wherein the detection mechanism is configured to be capable of obtaining geometric parameters of the pole piece and adjusting movement parameters of the first adjusting mechanism according to the geometric parameters of the pole piece so as to adjust the size of the rolling channel. The battery production system comprises the rolling equipment. According to the rolling equipment and the battery production system, on-line closed-loop adjustment of the roll gap size can be achieved without manual intervention, and the problem that the weight consistency and uniformity of pole pieces are poor due to large fluctuation of the roll gap is solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a rolling device and a battery production system. Background Art

[0002] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance, etc. of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power energy of new energy vehicles, are widely used.

[0003] In the existing dry-coating production process for electrode sheets, a roller press equipped with multiple rollers presses powder into a self-supporting electrode film, which is then composited with a current collector to produce the dry-process electrode sheet. Existing roller presses require manual adjustment of the gap between the rollers, making commissioning time-consuming and labor-intensive. This can lead to large gap fluctuations, making it difficult to maintain gap consistency and weight consistency, impacting the quality and production efficiency of dry-process electrode sheets. Summary of the Invention

[0004] Based on this, it is necessary to provide a rolling equipment and a battery production system to address the problem that the roll gap of existing rolling equipment needs to be manually adjusted and has poor consistency.

[0005] A rolling device for rolling electrode films and current collectors into pole pieces, comprising a rolling mechanism, a first adjustment mechanism and a detection mechanism, wherein the rolling mechanism comprises a first pressing roller, a second pressing roller, a third pressing roller and a fourth pressing roller which are arranged in sequence and form a rolling channel between each other; the position of the second pressing roller is fixed, and the first pressing roller, the third pressing roller and the fourth pressing roller can move in a direction close to or away from the second pressing roller; the first adjustment mechanism is connected to the rolling mechanism and is used to drive the first pressing roller, the third pressing roller and the fourth pressing roller to move in a direction close to or away from the second pressing roller, and the detection mechanism is electrically connected to the first adjustment mechanism; wherein the detection mechanism is configured to obtain the geometric parameters of the pole piece and adjust the movement parameters of the first adjustment mechanism according to the geometric parameters of the pole piece to adjust the size of the rolling channel.

[0006] In the above-mentioned rolling equipment, during the rolling process of the electrode, the detection mechanism can obtain the geometric parameters of the electrode in real time, and adjust the movement parameters of the first adjustment mechanism according to the geometric parameters of the electrode, so as to control the amplitude of movement of the first pressing roller, the third pressing roller and the fourth pressing roller in the direction of approaching or moving away from the second pressing roller, so that the geometric parameters of the obtained electrode are in line with the expected range. Without manual intervention, online closed-loop adjustment of the roller gap size can be achieved, thereby improving the problem of poor weight consistency and uniformity of the electrode due to large roller gap fluctuations, and helping to improve the weight consistency and uniformity of the electrode obtained by rolling.

[0007] In some embodiments, the first adjustment mechanism includes a first drive assembly, a first moving assembly, and a second moving assembly. The first drive assembly is connected to the first moving assembly and the second moving assembly, respectively, and is used to provide power. The first moving assembly is connected to the first pressure roller and is used to drive the first pressure roller to move. The second moving assembly is connected to the third pressure roller and the fourth pressure roller and is used to drive the third pressure roller and the fourth pressure roller to move. In this way, driven by the first drive assembly, the first moving assembly can drive the first pressure roller to move in a direction closer to or away from the second pressure roller, and the second moving assembly can drive the third pressure roller and the fourth pressure roller to move in a direction closer to or away from the second pressure roller. This allows online adjustment of the roller gap size without manual intervention, thereby improving the degree of automation of the equipment.

[0008] In some embodiments, the first moving assembly includes a first guide rail and a first slider slidably mounted on the first guide rail. The first slider is fixedly connected to the first pressure roller. The first drive assembly is connected to the first slider and is configured to drive the first slider to move horizontally. Thus, driven by the first drive assembly, the first slider slides horizontally relative to the first guide rail, driving the first pressure roller to slide horizontally. This allows the position of the first pressure roller to be adjusted without manual intervention, enabling online adjustment of the roller gap size, thereby improving the automation level of the equipment.

[0009] In some embodiments, the second moving assembly includes a second guide rail and a second slider slidably mounted on the second guide rail. The second slider is fixedly connected to the third and fourth pressure rollers, respectively. The first drive assembly is connected to the second slider and is configured to drive the second slider to move horizontally. Thus, driven by the first drive assembly, the second slider slides horizontally relative to the second guide rail, driving the third and fourth pressure rollers to slide horizontally. This allows the positions of the third and fourth pressure rollers to be adjusted without manual intervention, enabling online adjustment of the roller gap size and thereby improving the automation level of the equipment.

[0010] In some embodiments, the rolling equipment further includes a second adjustment mechanism, located within the rolling channel between the first and second rollers, and / or located within the rolling channel between the first and second rollers. The second adjustment mechanism is used to assist in adjusting the size of the rolling channel. In this manner, the second adjustment mechanism adjusts the size of the rolling channel by interfering with the space within the rolling channel for the electrode membrane and / or current collector to pass through, thereby assisting in adjusting the size of the rolling channel and further enabling online fine-tuning of the roller gap size, thereby improving the automation level of the equipment.

[0011] In some embodiments, the second adjustment mechanism includes a second drive assembly, a transmission assembly, and an adjustment assembly, wherein the second drive assembly is connected to the transmission assembly, which is in turn connected to the adjustment assembly. Driven by the second drive assembly, the transmission assembly activates and drives the adjustment assembly to adjust the extension length of the adjustment assembly within the rolling channel. Thus, driven by the second drive assembly, the transmission assembly activates and drives the adjustment assembly to adjust the extension length of the adjustment assembly within the rolling channel, interfering with the size of the space within the rolling channel for the electrode membrane and / or current collector to pass through, thereby assisting in adjusting the size of the rolling channel. This facilitates operation and has a rational structural design, enabling online fine-tuning of the roller gap size.

[0012] In some embodiments, the transmission assembly includes a mounting seat, a transmission screw, a screw nut, a first wedge, and a second wedge, the second wedge being connected to the adjustment assembly, the first wedge being fixedly connected to the screw nut, and the inclined surface of the second wedge being in contact with the inclined surface of the first wedge, the screw nut being sleeved over the transmission screw, and the transmission screw being rotatably mounted on the mounting seat; under the drive of the second drive assembly, the transmission screw rotates, the transmission screw nut moves in a first direction intersecting the horizontal direction, and drives the first wedge to move in the first direction, the first wedge pushing the second wedge in the horizontal direction, so that the second wedge pushes the adjustment assembly in the horizontal direction. In this way, under the drive of the second drive assembly, the transmission screw rotates, the first wedge pushing the second wedge in the horizontal direction, so that the second wedge pushes the adjustment assembly in the horizontal direction, so as to adjust the extension length of the adjustment assembly in the rolling channel, interfere with the size of the space for the electrode membrane and / or the current collector to pass through in the rolling channel, thereby assisting in adjusting the size of the rolling channel, and enabling quick and convenient online adjustment of the roller gap size.

[0013] In some embodiments, there are at least two screw nuts, first wedges, and second wedges, each of which is sleeved around the same transmission screw. Each screw nut is provided with a corresponding first wedge and a corresponding second wedge. Thus, driven by the second drive assembly, each second wedge pushes horizontally against the adjustment assembly to adjust the extension length of each adjustment assembly within the rolling channel, thereby better assisting in adjusting the size of the rolling channel at different locations and providing greater flexibility.

[0014] In some embodiments, the adjustment assembly includes a mounting plate, a push member, and an elastic member. The elastic member is positioned between the mounting plate and the mounting seat. The second wedge is fixed to one side of the mounting plate, and the push member is fixed to the side of the mounting plate facing away from the second wedge. Thus, driven by the second drive assembly, the push member can be moved horizontally to adjust the extension length of the adjustment assembly within the rolling channel, thereby assisting in adjusting the dimensions of the rolling channel at different locations. This provides a rational structural design and convenient operation.

[0015] In some embodiments, the push member is configured to expand and contract horizontally when subjected to mechanical stress. Thus, driven by the second drive assembly, the push member can rapidly and promptly expand and contract horizontally to adjust the extension length of the adjustment assembly within the rolling channel, resulting in a rational structural design and convenient operation.

[0016] In some embodiments, the second adjustment mechanism further includes a sensing limiter assembly, which is disposed on the mounting base and is capable of detecting the position of the second wedge and limiting its movement. Thus, the sensing limiter assembly can detect the position of the second wedge and limit its movement, thereby controlling the extension length of the adjustment assembly within the rolling channel and better assisting in adjusting the dimensions of the rolling channel.

[0017] In some embodiments, the rolling equipment further includes a frame, and the detection mechanism includes an electrically connected controller and a first detection member, the first detection member being disposed on the frame and configured to detect geometric parameters of the electrode piece, and the controller being capable of receiving signals from the first detection member and adjusting the first adjustment mechanism based on the geometric parameters of the electrode piece. Thus, during the rolling process of the electrode piece, the detection mechanism is capable of acquiring the geometric parameters of the electrode piece in real time and adjusting the first adjustment mechanism based on the geometric parameters of the electrode piece, thereby controlling the amplitude of movement of the first, third, and fourth rollers in a direction toward or away from the second roller, so that the obtained geometric parameters of the electrode piece fall within a desired range, thereby achieving online closed-loop adjustment of the roller gap size without manual intervention.

[0018] In some embodiments, the detection mechanism further includes a second detection member electrically connected to the controller. The second detection member is mounted on the frame and is used to detect the size of the rolling channel. The controller is capable of receiving signals from the second detection member and adjusting the first adjustment mechanism based on the size of the rolling channel. In this way, by obtaining the geometric parameters of the electrode piece through the first detection member and the size of the rolling channel through the second detection member, online closed-loop adjustment of the roll gap size can be achieved without manual intervention, ensuring that the obtained geometric parameters of the electrode piece are within the expected range, and the adjustment is more flexible and faster.

[0019] In some embodiments, the detection mechanism further includes a third detection member electrically connected to the controller. The third detection member is mounted on the frame and is used to detect the rolling pressure of the rolling mechanism. The controller is capable of receiving signals from the third detection member and adjusting the first adjustment mechanism based on the rolling pressure of the rolling mechanism. In this way, by obtaining the geometric parameters of the electrode piece through the first detection member and the rolling pressure of the rolling mechanism through the third detection member, online closed-loop adjustment of the roll gap size can be achieved without manual intervention, ensuring that the obtained geometric parameters of the electrode piece are within the expected range, and the adjustment is more flexible and faster.

[0020] A battery production system includes the aforementioned rolling equipment. During the rolling process of the electrode sheet, a detection mechanism can acquire the electrode sheet's geometric parameters in real time and adjust the movement parameters of the first adjustment mechanism based on the electrode sheet's geometric parameters, thereby controlling the amplitude of movement of the first, third, and fourth pressing rollers in the direction toward or away from the second pressing roller, so that the resulting electrode sheet's geometric parameters fall within a desired range. This allows for online closed-loop adjustment of the roller gap size without manual intervention, improving the poor weight consistency and uniformity of the electrode sheet caused by large roller gap fluctuations and facilitating improved weight consistency and uniformity of the rolled electrode sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an axonometric view of a rolling device in some embodiments of the present application.

[0022] Figure 2 for Figure 1 Front view of the roller pressing device shown.

[0023] Figure 3 for Figure 1 The conveying schematic diagram of the roller pressing equipment shown.

[0024] Figure 4 for Figure 1 Axonometric view of the second adjustment mechanism in the roller pressing device shown.

[0025] Figure 5 for Figure 4 A side view of the second adjustment mechanism is shown.

[0026] Figure 6 for Figure 4 A front view of the second adjustment mechanism is shown.

[0027] Figure 7 for Figure 6 AA cross-sectional view of the second adjustment mechanism shown.

[0028] Reference numerals:

[0029] 10. Electrode membrane; 20. Current collecting member;

[0030] 100, rolling mechanism; 101, rolling channel; 110, first pressing roller; 120, second pressing roller; 130, third pressing roller; 140, fourth pressing roller;

[0031] 200, first adjustment mechanism; 210, first drive assembly; 220, first moving assembly; 221, first guide rail; 222, first slider; 230, second moving assembly; 231, second guide rail; 232, second slider;

[0032] 300, detection mechanism; 320, second detection element; 321, laser rangefinder; 322, laser rangefinder board; 330, third detection element;

[0033] 400, second adjustment mechanism; 410, second drive assembly; 411, drive member; 412, reducer; 413, coupling; 420, transmission assembly; 421a, drive seat; 421b, front bearing seat; 421c, rear bearing seat; 421f, auxiliary base; 421e, wedge mounting base; 421d, fixing ring; 422, transmission screw; 423, screw nut; 424, first wedge; 425, second wedge; 430, adjustment assembly; 431, mounting plate; 432, push member; 433, elastic member; 440, inductive limit assembly; 441, inductive plate; 442, proximity switch;

[0034] 500, frame; 510, mounting base; 520, feed left mounting lower base plate; 530, feed right mounting lower base plate; 540, mounting reinforcing rib plate; 550, feed upper left mounting plate; 560, feed upper right mounting plate; 570, cylinder mounting plate. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0037] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0038] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0040] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0041] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0042] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0043] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance, etc. of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power energy of new energy vehicles, are widely used.

[0044] In the existing dry-coating production process for electrode sheets, a roller press equipped with multiple rollers presses powder into a self-supporting electrode film, which is then composited with a current collector to produce the dry-process electrode sheet. Existing roller presses require manual adjustment of the gap between the rollers, making commissioning time-consuming and labor-intensive. This can lead to large gap fluctuations, making it difficult to maintain gap consistency and weight consistency, impacting the quality and production efficiency of dry-process electrode sheets.

[0045] Based on the above considerations, after in-depth research, this application has designed a rolling equipment and battery production system. During the rolling process of the electrode, the detection mechanism can obtain the geometric parameters of the electrode in real time, and adjust the movement parameters of the first adjustment mechanism according to the geometric parameters of the electrode, so as to control the amplitude of movement of the first pressing roller, the third pressing roller and the fourth pressing roller in the direction of approaching or moving away from the second pressing roller, so that the geometric parameters of the obtained electrode are in line with the expected range. Without manual intervention, online closed-loop adjustment of the roller gap size can be achieved, which improves the problem of poor weight consistency and uniformity of the electrode due to large roller gap fluctuations, and is conducive to improving the weight consistency and uniformity of the electrode obtained by rolling.

[0046] Please refer to Figures 1 to 3 In one embodiment, a rolling device is used to roll the electrode film 10 and the current collecting member 20 into an electrode sheet. The rolling device includes a rolling mechanism 100, a first adjustment mechanism 200, and a detection mechanism 300. The rolling mechanism 100 includes a first pressing roller 110, a second pressing roller 120, a third pressing roller 130, and a fourth pressing roller 140 that are sequentially arranged and form a rolling channel 101 between each other. The position of the second pressing roller 120 is fixed, and the first pressing roller 110, the third pressing roller 130, and the fourth pressing roller 140 can be moved closer to or away from the second pressing roller 120. The first adjusting mechanism 200 is connected to the rolling mechanism 100, and is used to drive the first pressing roller 110, the third pressing roller 130 and the fourth pressing roller 140 to move in the direction close to or away from the second pressing roller 120, and the detection mechanism 300 is electrically connected to the first adjusting mechanism 200; wherein, the detection mechanism 300 is configured to be able to obtain the geometric parameters of the electrode piece, and adjust the movement parameters of the first adjusting mechanism 200 according to the geometric parameters of the electrode piece, so as to adjust the size of the rolling channel 101.

[0047] It should be noted that the first pressing roller 110, the second pressing roller 120, the third pressing roller 130 and the fourth pressing roller 140 are arranged in sequence and form a rolling channel 101 between each other, that is: the first pressing roller 110, the second pressing roller 120, the third pressing roller 130 and the fourth pressing roller 140 are arranged in sequence, and a rolling channel 101 (that is, a roller gap) is formed between the first pressing roller 110 and the second pressing roller 120, between the second pressing roller 120 and the third pressing roller 130, and between the third pressing roller 130 and the fourth pressing roller 140 respectively.

[0048] Here, the electrode film 10 and the current collector 20 are transported through the rolling channel 101 and rolled within the rolling channel 101 to form a dry-process electrode sheet. For example, a first rolling channel is formed between the first roller 110 and the second roller 120, a second rolling channel is formed between the second roller 120 and the third roller 130, and a third rolling channel is formed between the third roller 130 and the fourth roller 140. The electrode film 10 passes through the third and second rolling channels and then enters the first rolling channel. The current collector 20 is also transported into the first rolling channel. The current collector 20 and the electrode film 10 are rolled into a dry-process electrode sheet within the first rolling channel before being output.

[0049] In the embodiment of the present application, the rolling mechanism 100 is a component used to roll the electrode film 10 and the current collector. In the rolling mechanism 100, the second roller 120 is fixed in position, while the first roller 110, the third roller 130, and the fourth roller 140 can move toward or away from the second roller 120. In other words, the size of each rolling channel 101 can be adjusted to meet the rolling requirements. In addition to the aforementioned rollers, the rolling mechanism 100 can also include a larger number of rollers to meet the rolling requirements of electrode sheets of different sizes or types.

[0050] In the embodiment of the present application, the first adjustment mechanism 200 is a component for driving the first pressure roller 110, the third pressure roller 130, and the fourth pressure roller 140 to move toward or away from the second pressure roller 120. The first adjustment mechanism 200 can adopt various structural forms. For example, the first adjustment mechanism 200 can be a structure including a motor, a guide rail, and a slider, or a structure including a motor, a transmission screw 422, and a screw nut 423. The specific structural form of the first adjustment mechanism 200 is not limited herein.

[0051] In the embodiment of the present application, the detection mechanism 300 is a component for obtaining the geometric parameters of the electrode piece and adjusting the movement parameters of the first adjustment mechanism 200 according to the geometric parameters of the electrode piece. The detection mechanism 300 can adopt various structural forms. For example, the detection mechanism 300 can be a structure including an electrically connected controller and a detection component. The detection component is used to obtain the geometric parameters of the electrode piece. The controller can receive signals from the detection component and adjust the movement of the first adjustment mechanism 200 according to the geometric parameters of the electrode piece. The geometric parameters of the electrode piece include parameters such as the thickness, width, and surface density of the electrode piece.

[0052] In the above-mentioned rolling equipment, during the rolling process of the electrode, the detection mechanism 300 can obtain the geometric parameters of the electrode in real time, and adjust the movement parameters of the first adjustment mechanism 200 according to the geometric parameters of the electrode, thereby controlling the amplitude of movement of the first pressing roller 110, the third pressing roller 130 and the fourth pressing roller 140 in the direction of approaching or moving away from the second pressing roller 120, so that the geometric parameters of the obtained electrode meet the expected range. Without manual intervention, online closed-loop adjustment of the roller gap size can be achieved, thereby improving the problem of poor weight consistency and uniformity of the electrode due to large roller gap fluctuations, and helping to improve the weight consistency and uniformity of the electrode obtained by rolling.

[0053] According to some embodiments of this application, please refer to Figure 2 and Figure 3 The first adjustment mechanism 200 includes a first driving component 210, a first moving component 220 and a second moving component 230. The first driving component 210 is respectively connected to the first moving component 220 and the second moving component 230 and is used to provide power. The first moving component 220 is connected to the first pressure roller 110 and is used to drive the first pressure roller 110 to move. The second moving component 230 is connected to the third pressure roller 130 and the fourth pressure roller 140 and is used to drive the third pressure roller 130 and the fourth pressure roller 140 to move.

[0054] It can be understood that, driven by the first driving component 210, the first moving component 220 can drive the first pressure roller 110 to move in a direction close to or away from the second pressure roller 120, and the second moving component 230 can drive the third pressure roller 130 and the fourth pressure roller 140 to move in a direction close to or away from the second pressure roller 120.

[0055] In the embodiment of the present application, the first drive assembly 210 is a component for providing power to the first moving assembly 220 and the second moving assembly 230. The first drive assembly 210 can adopt various structures. For example, the first drive assembly 210 is a cylinder or a motor. The first drive assembly 210 can also be other drive structures having a power output shaft.

[0056] In the embodiment of the present application, the first moving assembly 220 is a component connected to the first pressure roller 110 and used to drive the first pressure roller 110 to move. The first moving assembly 220 can adopt various structures. For example, the first moving assembly 220 is a screw structure or a sliding structure. The first moving assembly 220 can drive the first pressure roller 110 to move in the horizontal direction and / or the vertical direction.

[0057] In the embodiment of the present application, the second moving assembly 230 is a component connected to the third and fourth pressure rollers 130, 140 and used to drive the third and fourth pressure rollers 130, 140 to move. The second moving assembly 230 can adopt various structures. For example, the second moving assembly 230 can be a screw structure or a sliding structure, and the second moving assembly 230 can drive the third and fourth pressure rollers 130, 140 to move in the horizontal direction and / or the vertical direction.

[0058] Through the above-mentioned arrangement, driven by the first driving component 210, the first moving component 220 can drive the first pressing roller 110 to move in the direction close to or away from the second pressing roller 120, and the second moving component 230 can drive the third pressing roller 130 and the fourth pressing roller 140 to move in the direction close to or away from the second pressing roller 120. Without manual intervention, online adjustment of the roller gap size can be achieved, which is conducive to improving the degree of automation of the equipment.

[0059] According to some embodiments of this application, please refer to Figure 2 The first moving component 220 includes a first guide rail 221 and a first slider 222 sliding on the first guide rail 221. The first slider 222 is fixedly connected to the first pressure roller 110. The first driving component 210 is connected to the first slider 222 and is used to drive the first slider 222 to move in the horizontal direction.

[0060] It should be noted that the horizontal direction is Figure 2 Driven by the first driving assembly 210 , the first slider 222 slides horizontally relative to the first guide rail 221 , and drives the first pressing roller 110 to slide horizontally.

[0061] In the embodiment of the present application, the first guide rail 221 is a member extending in the horizontal direction. The position of the first guide rail 221 is fixed. For example, the first guide rail 221 can be fixed to the frame 500 of the rolling equipment. The number of first guide rails 221 is not limited to one. When there are at least two first guide rails 221, the first guide rails 221 can be spaced apart and arranged side by side in the same direction.

[0062] In the embodiment of the present application, the first slider 222 is a component disposed on the first guide rail 221 and fixedly connected to the first pressure roller 110. The first slider 222 is a block-shaped structure, and the outline of the block structure can be rectangular, circular, or other shapes. The number of first sliders 222 is not limited to one. When there are at least two first sliders 222, each first slider 222 can be spaced apart horizontally on the same first guide rail 221, and each first slider 222 can be fixedly connected to the first pressure roller 110 at a different position to enhance the structural connection stability when the first pressure roller 110 slides.

[0063] Through the above-mentioned arrangement, driven by the first driving assembly 210, the first slider 222 slides in the horizontal direction relative to the first guide rail 221, and drives the first pressing roller 110 to slide in the horizontal direction. Without manual intervention, the position adjustment of the first pressing roller 110 can be changed to realize online adjustment of the roller gap size, which is conducive to improving the degree of automation of the equipment.

[0064] According to some embodiments of this application, please refer to Figure 2 The second moving component 230 includes a second guide rail 231 and a second slider 232 sliding on the second guide rail 231. The second slider 232 is fixedly connected to the third pressure roller 130 and the fourth pressure roller 140 respectively. The first driving component 210 is connected to the second slider 232 and is used to drive the second slider 232 to move in the horizontal direction.

[0065] It should be noted that the horizontal direction is Figure 2 Driven by the first driving assembly 210 , the second sliding block 232 slides in the horizontal direction relative to the second guide rail 231 , and drives the second pressing roller 120 to slide in the horizontal direction.

[0066] In the embodiment of the present application, the second guide rail 231 is a member extending horizontally. The position of the second guide rail 231 is fixed. For example, the second guide rail 231 can be fixed to the frame 500 of the rolling equipment. The number of second guide rails 231 is not limited to one. When there are at least two second guide rails 231, the second guide rails 231 can be spaced apart and arranged side by side in the same direction.

[0067] In the embodiment of the present application, the second slider 232 is a component disposed on the second guide rail 231 and fixedly connected to the third and fourth pressure rollers 130 and 140. The second slider 232 is a block-shaped structure, and the outline of the block structure can be rectangular, circular, or other shapes. The number of second sliders 232 is not limited to one. When there are at least two second sliders 232, each second slider 232 can be spaced apart horizontally on the same second guide rail 231, and each second slider 232 can be fixedly connected to different positions of the third and fourth pressure rollers 130 and 140 to enhance the structural connection stability when the second pressure roller 120 slides.

[0068] Through the above-mentioned arrangement, driven by the first driving assembly 210, the second slider 232 slides in the horizontal direction relative to the second guide rail 231, and drives the third pressing roller 130 and the fourth pressing roller 140 to slide in the horizontal direction. Without manual intervention, the position adjustment of the third pressing roller 130 and the fourth pressing roller 140 can be changed to realize online adjustment of the roller gap size, which is conducive to improving the degree of automation of the equipment.

[0069] According to some embodiments of this application, please refer to Figure 3The rolling equipment also includes a second adjusting mechanism 400, which is arranged in the rolling channel 101 between the first pressing roller 110 and the second pressing roller 120, and / or the second adjusting mechanism 400 is arranged in the rolling channel 101 between the first pressing roller 110 and the second pressing roller 120, and the second adjusting mechanism 400 is used to assist in adjusting the size of the rolling channel 101.

[0070] It is understood that the electrode film 10 and the current collector 20 are transported through the rolling channel 101 and rolled within the rolling channel 101 to form the electrode sheet. The second adjustment mechanism 400 is disposed within the rolling channel 101. The second adjustment mechanism 400 adjusts the size of the space within the rolling channel 101 for the electrode film 10 and / or the current collector 20 to pass through, thereby assisting in adjusting the size of the rolling channel 101.

[0071] In the embodiment of the present application, the second adjustment mechanism 400 is a component used to assist in adjusting the size of the rolling channel 101. The second adjustment mechanism 400 can adopt various structural forms. For example, the second adjustment mechanism 400 can be a structure including a motor, a guide rail, and a slider, or a structure including a motor, a transmission screw 422, and a screw nut 423. By adjusting the extension length of the second adjustment mechanism 400 within the rolling channel 101, the size of the rolling channel 101 can be changed. The specific structural form of the second adjustment mechanism 400 is not limited herein.

[0072] Through the above arrangement, the second adjustment mechanism 400 is used to interfere with the size of the space in the rolling channel 101 for the electrode membrane 10 and / or the current collecting member 20 to pass through, thereby assisting in adjusting the size of the rolling channel 101 and further realizing online fine-tuning of the roller gap size, which is beneficial to improving the degree of automation of the equipment.

[0073] According to some embodiments of this application, please refer to Figure 3 and Figure 4 The second adjustment mechanism 400 includes a second drive component 410, a transmission component 420 and an adjustment component 430. The second drive component 410 is connected to the transmission component 420, and the transmission component 420 is connected to the adjustment component 430. Driven by the second drive component 410, the transmission component 420 moves and drives the adjustment component 430 to move to adjust the extension length of the adjustment component 430 in the rolling channel 101.

[0074] It should be noted that, driven by the second driving component 410, the transmission component 420 is active and drives the adjustment component 430 to move, so as to adjust the protruding length of the adjustment component 430 in the rolling channel 101, interfere with the size of the space in the rolling channel 101 for the electrode membrane 10 and / or the current collecting part 20 to pass through, thereby assisting in adjusting the size of the rolling channel 101.

[0075] In the embodiment of the present application, the second drive assembly 410 is a component for providing power to the transmission assembly 420. The second drive assembly 410 can adopt various structures. Figure 4 The second drive assembly 410 includes a drive member 411, a reducer 412 and a coupling 413. The drive member 411 is connected to one end of the coupling 413 through the reducer 412, and the other end of the coupling 413 is connected to the transmission assembly 420. The reducer 412 is used to reduce the high speed output by the drive member 411 to the required low speed. The coupling 413 is used to connect the reducer 412 and the transmission assembly 420 together so that the two rotate together.

[0076] In the embodiment of the present application, the transmission assembly 420 is connected to the second drive assembly 410 and the adjustment assembly 430 to transmit the components of the adjustment assembly 430. The transmission assembly 420 can adopt various structures. For example, the transmission assembly 420 can include a guide rail and a slider, or a transmission screw 422 and a screw nut 423. Driven by the second drive assembly 410, the transmission assembly 420 moves, thereby driving the adjustment assembly 430 to move.

[0077] In the embodiment of the present application, the adjustment assembly 430 is a component connected to the transmission assembly 420 and capable of moving within the rolling channel 101. The adjustment assembly 430 can adopt various structures. For example, the adjustment assembly 430 includes a push rod or a push block, which can be driven by the transmission assembly 420 to move within the rolling channel 101 to adjust the extension length of the adjustment assembly 430 within the rolling channel 101, thereby interfering with the size of the space within the rolling channel 101 for the electrode membrane 10 and / or the current collecting member 20 to pass through.

[0078] Through the above-mentioned arrangement, driven by the second driving component 410, the transmission component 420 is active and drives the adjustment component 430 to move, so as to adjust the protruding length of the adjustment component 430 in the rolling channel 101, interfere with the size of the space for the electrode membrane 10 and / or the current collecting member 20 to pass through the rolling channel 101, thereby assisting in adjusting the size of the rolling channel 101. The operation is convenient and the structural design is reasonable, and online fine-tuning of the roller gap size can be achieved.

[0079] According to some embodiments of this application, please refer to Figure 4 and Figure 5The transmission assembly 420 includes a mounting seat, a transmission screw 422, a screw nut 423, a first wedge 424 and a second wedge 425. The second wedge 425 is connected to the adjustment assembly 430. The first wedge 424 is fixedly connected to the screw nut 423, and the inclined surface of the second wedge 425 abuts against the inclined surface of the first wedge 424. The screw nut 423 is sleeved on the outside of the transmission screw 422, and the transmission screw 422 is rotatably arranged on the mounting seat; driven by the second driving assembly 410, the transmission screw 422 rotates, and the transmission screw 422 nut moves along a first direction intersecting with the horizontal direction, and drives the first wedge 424 to move along the first direction. The first wedge 424 pushes the second wedge 425 in the horizontal direction, so that the second wedge 425 pushes the adjustment assembly 430 in the horizontal direction.

[0080] It should be noted that the horizontal direction is Figure 5 The X direction shown is the first direction Figure 5 Here, the transmission screw 422 is along the Y direction. Figure 5 As shown, the transmission screw 422 is extended in the Y direction. Driven by the second driving assembly 410, the transmission screw 422 rotates, and the nut of the transmission screw 422 is rotated along the Figure 5 The Y direction is shown, and the first wedge 424 is driven to move along Figure 5 As shown in the Y direction, the first wedge 424 moves along Figure 5 The second wedge block 425 is pushed against the X direction so that the second wedge block 425 Figure 5 The X-direction push adjustment component 430 is shown to adjust the extension length of the adjustment component 430 in the rolling channel 101, interfere with the size of the space for the electrode membrane 10 and / or the current collecting member 20 to pass through the rolling channel 101, thereby assisting in adjusting the size of the rolling channel 101.

[0081] In the embodiment of the present application, the mounting seat is a component for providing installation space for the transmission screw 422 or other components of the transmission assembly 420, and the mounting seat can adopt various structural forms. Specifically, the mounting seat includes a drive seat 421a, a front bearing seat 421b, a rear bearing seat 421c, a sub-base 421f, a wedge block mounting base 421e, and a fixing ring 421d. The front bearing seat 421b, the rear bearing seat 421c, and the sub-base 421f are fixed to one side of the wedge block mounting base 421e in sequence. The drive seat 421a is connected to the front bearing seat 421b. The second drive assembly 410 is mounted on the drive seat 421a. The transmission screw 422 is mounted on the sub-base 421f. The two ends of the transmission screw 422 are rotatably connected to the front bearing seat 421b and the rear bearing seat 421c respectively. The rear end of the transmission screw 422 is limited by the fixing ring 421d to prevent the rear end of the transmission screw 422 from separating from the rear bearing seat 421c.

[0082] In the embodiment of the present application, the inclined surface of the second wedge block 425 abuts against the inclined surface of the first wedge block 424, that is, the inclined surface of the second wedge block 425 and the inclined surface of the first wedge block 424 can contact each other, and the inclined surface of the second wedge block 425 and the inclined surface of the first wedge block 424 have the same inclination. Figure 6 and Figure 7 The inclined surface of the second wedge 425 is relative to Figure 7 The Y-direction inclined plane structure is shown, and accordingly, the inclined surface of the first wedge 424 is also relative to Figure 7 The second wedge block 425 and the first wedge block 424 are both block-shaped structures, and the outer contours of the block structures can be in various shapes. The specific shapes of the second wedge block 425 and the first wedge block 424 are not limited here.

[0083] In an embodiment of the present application, the second wedge block 425 is connected to the adjustment assembly 430, and the second wedge block 425 and the adjustment assembly 430 can be fixed by snapping, plugging, riveting, etc. The connection between the two can be detachable or non-detachable.

[0084] In an embodiment of the present application, the first wedge block 424 is fixedly connected to the screw nut 423. The first wedge block 424 and the screw nut 423 can be fixed by snapping, plugging, riveting, etc. The connection between the two can be detachable or non-detachable.

[0085] Through the above-mentioned arrangement, driven by the second driving component 410, the transmission screw 422 rotates, and the first wedge block 424 pushes the second wedge block 425 in the horizontal direction, so that the second wedge block 425 pushes the adjustment component 430 in the horizontal direction, so as to adjust the protruding length of the adjustment component 430 in the rolling channel 101, interfere with the size of the space in the rolling channel 101 for the electrode membrane 10 and / or the current collecting member 20 to pass through, thereby assisting in adjusting the size of the rolling channel 101, and enabling quick and convenient online adjustment of the roller gap size.

[0086] According to some embodiments of this application, please refer to Figures 5 to 7 The number of the screw nut 423, the first wedge block 424 and the second wedge block 425 is at least two, and each screw nut 423 is sleeved outside the same transmission screw 422, and each screw nut 423 is correspondingly provided with a first wedge block 424 and a second wedge block 425.

[0087] It can be understood that, driven by the second drive assembly 410, the transmission screw 422 rotates, drives each screw nut 423 to move along the first direction, and drives each first wedge block 424 to move along the first direction, and each first wedge block 424 pushes the second wedge block 425 in the horizontal direction, so that each second wedge block 425 pushes the adjustment assembly 430 in the horizontal direction.

[0088] In the embodiment of the present application, each screw nut 423 is sleeved on the outside of the same transmission screw 422, and the sizes and shapes of each screw nut 423 can be the same or different.

[0089] In the embodiment of the present application, the size and shape of each second wedge block 425 can be the same or different; the size and shape of each first wedge block 424 can be the same or different; as long as the second wedge block 425 and the first wedge block 424 can be compatible.

[0090] Through the above-mentioned setting, under the drive of the second driving component 410, each second wedge block 425 pushes the adjustment component 430 in the horizontal direction to adjust the extension length of each adjustment component 430 in the rolling channel 101, which can better assist in adjusting the size of the rolling channel 101 at different positions and make the adjustment more flexible.

[0091] According to some embodiments of this application, please refer to Figures 5 to 7 The adjustment assembly 430 includes a mounting plate 431, a push member 432 and an elastic member 433. The elastic member 433 is arranged between the mounting plate 431 and the mounting seat. The second wedge block 425 is fixed to one side of the mounting plate 431, and the push member 432 is fixed to the side of the mounting plate 431 away from the second wedge block 425.

[0092] It should be noted that, driven by the second driving assembly 410, the transmission screw 422 rotates, and the nut of the transmission screw 422 rotates along the Figure 5 The Y direction is shown, and the first wedge 424 is driven to move along Figure 5 As shown in the Y direction, the first wedge 424 moves along Figure 5 The second wedge block 425 is pushed against the X direction so that the second wedge block 425 Figure 5 Push the mounting plate 431 in the X direction, and Figure 5 The push member 432 is pushed in the X direction as shown, so that the push member 432 is in the horizontal direction ( Figure 5 Here, the elastic member 433 is used to provide a restoring force for the push member 432 to reset.

[0093] In the embodiment of the present application, the mounting plate 431 is a component used to provide installation space for components such as the second wedge 425, the elastic member 433, and the push member 432. The mounting plate 431 can adopt various structural forms. Here, the mounting plate 431, the second wedge 425, and the push member 432 can be an integrated structure or a separate structure. Specifically, the mounting plate 431 is a flat plate-shaped structure.

[0094] In the embodiment of the present application, the push member 432 is a component disposed on the side of the mounting plate 431 facing away from the second wedge block 425. The push member 432 is capable of moving synchronously with the mounting plate 431. The push member 432 can adopt various structural forms. For example, the push member 432 can be a columnar structure or a block structure. The shape of the push member 432 is not specifically limited herein.

[0095] In the embodiment of the present application, the elastic member 433 is a component for providing a restoring force for the push member 432 to return to its original position. Preferably, the elastic member 433 is a spring. The number of elastic members 433 is not limited to one. When there are at least two elastic members 433, each elastic member 433 can be distributed side by side between the mounting plate 431 and the mounting seat.

[0096] Through the above-mentioned setting, under the drive of the second driving component 410, the pushing member 432 can move in the horizontal direction to adjust the extension length of the adjusting component 430 in the rolling channel 101, which can assist in adjusting the size of the rolling channel 101 at different positions. The structural design is reasonable and the operation is convenient.

[0097] According to some embodiments of this application, please refer to Figure 7 The push member 432 is constructed to have a structure that will expand and contract in the horizontal direction when subjected to mechanical stress.

[0098] It can be understood that when the second wedge 425 is in the horizontal direction ( Figure 7 When the mounting plate 431 is pushed in the X direction (as shown), the mounting plate 431 pushes the pushing member 432 in the horizontal direction, and the pushing member 432 extends in the horizontal direction. When the horizontal thrust of the mounting plate 431 on the pushing member 432 is removed, the pushing member 432 retracts to its initial length in the horizontal direction.

[0099] In the embodiment of the present application, the push member 432 is a piezoelectric ceramic actuator composed of multiple layers of stacked piezoelectric ceramic sheets, with the two electrodes of the piezoelectric ceramic actuator connected to a power supply. When the second wedge 425 pushes against the mounting plate 431 horizontally, the power supply outputs a voltage, and current flows through the ceramic sheets. The ceramic sheets deform under the action of the electric field, thereby extending horizontally. When the horizontal thrust of the mounting plate 431 is removed, the power supply voltage changes, and the deformation of the ceramic sheets also changes accordingly, causing the actuator to retract horizontally to its initial length.

[0100] Through the above arrangement, driven by the second driving assembly 410, the push member 432 can be quickly and timely extended and retracted in the horizontal direction to adjust the extension length of the adjusting assembly 430 in the rolling channel 101. The structural design is reasonable and the operation is convenient.

[0101] According to some embodiments of this application, please refer to Figure 4The second adjustment mechanism 400 also includes a sensing limit assembly 440 , which is disposed on the mounting seat. The sensing limit assembly 440 can obtain the position of the second wedge block 425 and limit the movement of the second wedge block 425 .

[0102] In the embodiment of the present application, the sensing limit assembly 440 is a component used to obtain the position of the second wedge 425 and limit the movement of the second wedge 425. The sensing limit assembly 440 can adopt various structural forms. Specifically, the sensing limit assembly 440 includes a sensing piece 441 and a proximity switch 442. The proximity switch 442 is fixed to the mounting base. The sensing piece 441 is provided on the second wedge 425 and can move with the second wedge 425. When the second wedge 425 moves to the proximity switch 442, a first sensing signal is generated between the sensing piece 441 and the proximity switch 442, prompting the second wedge 425 to move horizontally to the extreme position close to the mounting base.

[0103] In the embodiment of the present application, the number of the sensing limit assembly 440 is not limited to one. When the number of the sensing limit assembly 440 is at least two, each sensing limit assembly 440 can be set at a different position to better limit the movement of the second wedge block 425.

[0104] Through the above setting, the sensing limit component 440 can obtain the position of the second wedge block 425 and limit the movement of the second wedge block 425, and can control the extension length of the adjustment component 430 in the rolling channel 101, so as to better assist in adjusting the size of the rolling channel 101.

[0105] According to some embodiments of this application, please refer to Figure 1 The rolling equipment also includes a frame 500, and the detection mechanism 300 includes an electrically connected controller and a first detection member. The first detection member is arranged on the frame 500 and is used to detect the geometric parameters of the pole piece. The controller can receive the signal of the first detection member and adjust the first adjustment mechanism 200 according to the geometric parameters of the pole piece.

[0106] It should be noted that the electrode is manufactured by dry coating. The electrode's geometric parameters are obtained through a first detection member. If the electrode's geometric parameters are not within the preset parameter range, the controller adjusts the movement of the first adjustment mechanism 200 to adjust the size of the rolling channel 101. The electrode's geometric parameters are then obtained again through the first detection member. If the electrode's geometric parameters are not within the preset parameter range, the controller adjusts the movement of the first adjustment mechanism 200 again. This cycle of adjustment continues until the electrode's geometric parameters are within the preset parameter range, at which point the controller stops adjusting the first adjustment mechanism 200. The electrode's geometric parameters include parameters such as thickness, width, and surface density.

[0107] In the embodiment of the present application, the first detection component is a visual alignment mechanism (ie, a CCD mechanism), and the geometric parameters of the pole piece can be obtained by acquiring an image of the pole piece through the visual alignment mechanism.

[0108] In the embodiment of the present application, the frame 500 is a component for providing installation space for components such as the first detection member and the rolling mechanism 100. The frame 500 can adopt various structural forms. For example, the frame 500 includes a mounting base 510, a left feed mounting bottom plate 520, a right feed mounting bottom plate 530, a mounting reinforcement plate 540, a left feed upper mounting plate 550, a right feed upper mounting plate 560, and a cylinder mounting plate 570. The left feed lower mounting plate 520 and the left feed upper mounting plate 550 are arranged on one side of the mounting base 510, and the right feed lower mounting plate 530 and the right feed upper mounting plate 560 are installed on the other side of the mounting base 510. On the side, the cylinder mounting plate 570 is provided on the mounting base 510, and the mounting reinforcement rib plate 540 is provided on the mounting base 510 to strengthen the structural strength. The mounting base 510, the feed left mounting lower base plate 520, the feed right mounting lower base plate 530, the mounting reinforcement rib plate 540, the feed left upper mounting plate 550, the feed right upper mounting plate 560, and the cylinder mounting plate 570 are combined into one body to enable the rolling mechanism 100, the first detection member and other components to be installed and fixed. Among them, the mounting base 510, the feed left mounting lower base plate 520, the feed right mounting lower base plate 530, the mounting reinforcement rib plate 540, the feed left upper mounting plate 550, the feed right upper mounting plate 560, and the cylinder mounting plate 570 can be an integrated structure or a separate structure.

[0109] Through the above-mentioned setting, during the rolling process of the electrode, the detection mechanism 300 can obtain the geometric parameters of the electrode in real time, and adjust the first adjustment mechanism 200 according to the geometric parameters of the electrode, so as to control the amplitude of movement of the first pressing roller 110, the third pressing roller 130 and the fourth pressing roller 140 in the direction of approaching or moving away from the second pressing roller 120, so that the obtained geometric parameters of the electrode are in line with the expected range, and online closed-loop adjustment of the roller gap size can be achieved without manual intervention.

[0110] According to some embodiments of this application, please refer to Figure 1 The detection mechanism 300 also includes a second detection member 320 electrically connected to the controller. The second detection member 320 is arranged on the frame 500 and is used to detect the size of the rolling channel 101. The controller can receive the signal of the second detection member 320 and adjust the first adjustment mechanism 200 according to the size of the rolling channel 101.

[0111] It should be noted that the geometric parameters of the pole piece are obtained by the first detection member, and the size of the rolling channel 101 is obtained by the second detection member 320. When the geometric parameters of the pole piece are not within the preset parameter range, the controller is used to adjust the movement of the first adjustment mechanism 200 to achieve the size adjustment of the rolling channel 101. The geometric parameters of the pole piece are obtained again by the first detection member and the size of the rolling channel 101 are obtained by the second detection member 320. When the geometric parameters of the pole piece are not within the preset parameter range, the controller is used to adjust the movement of the first adjustment mechanism 200 again. The adjustment is cyclically performed until the geometric parameters of the pole piece are within the preset parameter range, and the controller stops adjusting the first adjustment mechanism 200.

[0112] In an embodiment of the present application, the second detection component 320 is a laser ranging mechanism, which includes a laser rangefinder 321 and a laser ranging plate 322. The laser rangefinder 321 and the laser ranging plate 322 are respectively arranged on two adjacent pressing rollers. After the laser rangefinder 321 emits a laser, the laser is reflected by the laser ranging plate 322 to the laser rangefinder 321, thereby quickly obtaining the size of the rolling channel 101 between the two adjacent pressing rollers.

[0113] Through the above-mentioned setting, the geometric parameters of the pole piece are obtained by the first detection member, and the size of the rolling channel 101 is obtained by the second detection member 320. Without manual intervention, online closed-loop adjustment of the roller gap size can be achieved, so that the obtained geometric parameters of the pole piece are in line with the expected range, and the adjustment is more flexible and faster.

[0114] According to some embodiments of this application, please refer to Figure 1 The detection mechanism 300 also includes a third detection member 330 electrically connected to the controller. The third detection member 330 is arranged on the frame 500 and is used to detect the rolling pressure of the rolling mechanism 100. The controller can receive the signal of the third detection member 330 and adjust the first adjustment mechanism 200 according to the rolling pressure of the rolling mechanism 100.

[0115] It should be noted that the geometric parameters of the pole piece are obtained by the first detection member, and the rolling pressure of the rolling mechanism 100 is obtained by the third detection member 330. When the geometric parameters of the pole piece are not within the preset parameter range, the controller is used to adjust the movement of the first adjustment mechanism 200 to achieve size adjustment of the rolling channel 101. The geometric parameters of the pole piece are obtained again by the first detection member and the rolling pressure of the rolling mechanism 100 is obtained by the third detection member 330. When the geometric parameters of the pole piece are not within the preset parameter range, the controller is used to adjust the movement of the first adjustment mechanism 200 again. The adjustment is cyclically repeated until the geometric parameters of the pole piece are within the preset parameter range, and the controller stops adjusting the first adjustment mechanism 200.

[0116] In the embodiment of the present application, the second detection component 320 is a pressure detection gauge, which can quickly obtain the rolling pressure of the rolling mechanism 100.

[0117] Through the above-mentioned setting, the geometric parameters of the pole piece are obtained by the first detection member, and the rolling pressure of the rolling mechanism 100 is obtained by the third detection member 330. Without manual intervention, online closed-loop adjustment of the roller gap size can be achieved, so that the obtained geometric parameters of the pole piece are in line with the expected range, and the adjustment is more flexible and faster.

[0118] Please refer to Figure 1 , a battery production system includes the above-mentioned rolling equipment.

[0119] It should be noted that, in addition to the above-mentioned rolling equipment, the battery production system also includes a processing device, which is located downstream of the rolling equipment and is used to further process the electrode sheets.

[0120] In the above-mentioned battery production system, during the rolling process of the electrode, the detection mechanism 300 can obtain the geometric parameters of the electrode in real time, and adjust the movement parameters of the first adjustment mechanism 200 according to the geometric parameters of the electrode, thereby controlling the amplitude of movement of the first pressing roller 110, the third pressing roller 130 and the fourth pressing roller 140 in the direction of approaching or moving away from the second pressing roller 120, so that the geometric parameters of the obtained electrode are in line with the expected range. Without manual intervention, online closed-loop adjustment of the roller gap size can be achieved, thereby improving the problem of poor weight consistency and uniformity of the electrode due to large roller gap fluctuations, and helping to improve the weight consistency and uniformity of the electrode obtained by rolling.

[0121] According to some embodiments of this application, see Figures 1 to 7 A rolling device includes a frame 500, a rolling mechanism 100, a first adjusting mechanism 200, a second adjusting mechanism 400 and a detection mechanism 300. The rolling mechanism 100 includes a first pressing roller 110, a second pressing roller 120, a third pressing roller 130 and a fourth pressing roller 140 arranged in sequence and forming a rolling channel 101 between each other. The first adjusting mechanism 200 is connected to the rolling mechanism 100 and is used to drive the first pressing roller 110, the third pressing roller 130 and the fourth pressing roller 140 to move in a direction close to or away from the second pressing roller 120; the detection mechanism 300 is electrically connected to the first adjusting mechanism 200; wherein the detection mechanism 300 is configured to obtain the geometric parameters of the electrode piece and adjust the movement parameters of the first adjusting mechanism 200 according to the geometric parameters of the electrode piece to adjust the size of the rolling channel 101. The second adjustment mechanism 400 is arranged in the rolling channel 101 between the first pressing roller 110 and the second pressing roller 120, and / or the second adjustment mechanism 400 is arranged in the rolling channel 101 between the first pressing roller 110 and the second pressing roller 120, and the second adjustment mechanism 400 is used to assist in adjusting the size of the rolling channel 101.

[0122] Among them, the first adjustment mechanism 200 includes a first driving component 210, a first moving component 220 and a second moving component 230. The first driving component 210 is respectively connected to the first moving component 220 and the second moving component 230 and is used to provide power. The first moving component 220 is connected to the first pressure roller 110 and is used to drive the first pressure roller 110 to move. The second moving component 230 is connected to the third pressure roller 130 and the fourth pressure roller 140 and is used to drive the third pressure roller 130 and the fourth pressure roller 140 to move. The second adjustment mechanism 400 includes a second drive assembly 410, a transmission assembly 420, an adjustment assembly 430 and an inductive limit assembly 440. The transmission assembly 420 includes a mounting seat, a transmission screw 422, a screw nut 423, a first wedge 424 and a second wedge 425. The second wedge 425 is connected to the adjustment assembly 430, the first wedge 424 is fixedly connected to the screw nut 423, and the inclined surface of the second wedge 425 abuts against the inclined surface of the first wedge 424. The screw nut 423 is sleeved on the outside of the transmission screw 422, and the transmission screw 422 is rotatably arranged on the mounting seat; under the drive of the second drive assembly 410, the transmission screw 422 rotates, and the transmission screw 422 nut is rotated along the horizontal The first wedge block 424 moves in the first direction intersecting the directions, and drives the first wedge block 424 to move along the first direction. The first wedge block 424 pushes the second wedge block 425 in the horizontal direction, so that the second wedge block 425 pushes the adjustment component 430 in the horizontal direction; the adjustment component 430 includes a mounting plate 431, a pushing member 432 and an elastic member 433, the elastic member 433 is arranged between the mounting plate 431 and the mounting seat, the second wedge block 425 is fixed to one side of the mounting plate 431, the pushing member 432 is fixed to the side of the mounting plate 431 away from the second wedge block 425, and the sensing limit assembly 440 is arranged on the mounting seat. The sensing limit assembly 440 can obtain the position of the second wedge block 425 and limit the movement of the second wedge block 425.

[0123] According to some embodiments of this application, see Figure 1 In one embodiment, a battery production system includes the above-mentioned roller pressing device.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A rolling device for forming an electrode film (10) and rolling the electrode film (10) and a current collector (20) into a pole piece, characterized in that: include: A rolling mechanism (100) comprises a first pressing roller (110), a second pressing roller (120), a third pressing roller (130) and a fourth pressing roller (140) which are arranged in sequence and form a rolling channel (101) therebetween; the position of the second pressing roller (120) is fixed, and the first pressing roller (110), the third pressing roller (130) and the fourth pressing roller (140) are capable of moving in a direction approaching or away from the second pressing roller (120); a first adjustment mechanism (200) connected to the roller pressing mechanism (100) and used to drive the first pressing roller (110), the third pressing roller (130) and the fourth pressing roller (140) to move in a direction approaching or away from the second pressing roller (120); A detection mechanism (300) electrically connected to the first adjustment mechanism (200); The detection mechanism (300) is configured to obtain geometric parameters of the pole piece, and adjust the movement parameters of the first adjustment mechanism (200) according to the geometric parameters of the pole piece to adjust the size of the rolling channel (101).

2. The rolling equipment according to claim 1, characterized in that The first adjustment mechanism (200) includes a first driving component (210), a first moving component (220) and a second moving component (230), wherein the first driving component (210) is connected to the first moving component (220) and the second moving component (230) respectively and is used to provide power, the first moving component (220) is connected to the first pressure roller (110) and is used to drive the first pressure roller (110) to move, and the second moving component (230) is connected to the third pressure roller (130) and the fourth pressure roller (140) and is used to drive the third pressure roller (130) and the fourth pressure roller (140) to move.

3. The rolling equipment according to claim 2, characterized in that The first moving assembly (220) comprises a first guide rail (221) and a first slider (222) slidably arranged on the first guide rail (221); the first slider (222) is fixedly connected to the first pressure roller (110); and the first driving assembly (210) is connected to the first slider (222) and is used to drive the first slider (222) to move in a horizontal direction.

4. The rolling equipment according to claim 2, characterized in that The second moving assembly (230) includes a second guide rail (231) and a second slider (232) slidably mounted on the second guide rail (231); the second slider (232) is fixedly connected to the third pressure roller (130) and the fourth pressure roller (140), respectively; the first driving assembly (210) is connected to the second slider (232) and is used to drive the second slider (232) to move in a horizontal direction.

5. The rolling equipment according to claim 1, characterized in that The rolling device further includes a second adjusting mechanism (400), wherein the second adjusting mechanism (400) is arranged in the rolling channel (101) between the first pressing roller (110) and the second pressing roller (120), and / or the second adjusting mechanism (400) is arranged in the rolling channel (101) between the first pressing roller (110) and the second pressing roller (120), and the second adjusting mechanism (400) is used to assist in adjusting the size of the rolling channel (101).

6. The rolling device according to claim 5, characterized in that The second adjustment mechanism (400) comprises a second drive assembly (410), a transmission assembly (420) and an adjustment assembly (430), wherein the second drive assembly (410) is connected to the transmission assembly (420), and the transmission assembly (420) is connected to the adjustment assembly (430); Driven by the second driving component (410), the transmission component (420) moves and drives the adjustment component (430) to move, so as to adjust the extension length of the adjustment component (430) in the rolling channel (101).

7. The rolling device according to claim 6, characterized in that The transmission assembly (420) includes a mounting seat, a transmission screw (422), a screw nut (423), a first wedge (424) and a second wedge (425), wherein the second wedge (425) is connected to the adjustment assembly (430), the first wedge (424) is fixedly connected to the screw nut (423), and the inclined surface of the second wedge (425) abuts against the inclined surface of the first wedge (424), the screw nut (423) is sleeved outside the transmission screw (422), and the transmission screw (422) is rotatably mounted on the mounting seat; Driven by the second driving assembly (410), the transmission screw (422) rotates, drives the screw nut (423) to move along a first direction intersecting the horizontal direction, and drives the first wedge block (424) to move along the first direction, and the first wedge block (424) pushes the second wedge block (425) in the horizontal direction, so that the second wedge block (425) pushes the adjustment assembly (430) in the horizontal direction.

8. The rolling device according to claim 7, characterized in that The number of the screw nut (423), the first wedge block (424) and the second wedge block (425) is at least two, each screw nut (423) is sleeved outside the same transmission screw (422), and each screw nut (423) is correspondingly provided with one first wedge block (424) and one second wedge block (425).

9. The rolling device according to claim 7, characterized in that The adjustment assembly (430) includes a mounting plate (431), a push member (432) and an elastic member (433), wherein the elastic member (433) is arranged between the mounting plate (431) and the mounting seat, the second wedge block (425) is fixed to one side of the mounting plate (431), and the push member (432) is fixed to a side of the mounting plate (431) facing away from the second wedge block (425).

10. The rolling device according to claim 9, characterized in that The push member (432) is constructed as a structure that expands and contracts in the horizontal direction when subjected to mechanical stress.

11. The rolling device according to claim 7, characterized in that The second adjustment mechanism (400) further includes a sensing limit assembly (440), wherein the sensing limit assembly (440) is provided on the mounting seat, and the sensing limit assembly (440) is capable of acquiring the position of the second wedge block (425) and limiting the movement of the second wedge block (425).

12. The rolling device according to any one of claims 1 to 11, characterized in that: The rolling device further comprises a frame (500), the detection mechanism (300) comprises an electrically connected controller and a first detection member, the first detection member is arranged on the frame (500) and is used to detect the geometric parameters of the pole piece, and the controller is capable of receiving a signal from the first detection member and adjusting the first adjustment mechanism (200) according to the geometric parameters of the pole piece.

13. The rolling device according to claim 12, characterized in that The detection mechanism (300) further comprises a second detection member (320) electrically connected to the controller, wherein the second detection member (320) is provided on the frame (500) and is used to detect the size of the rolling channel (101), and the controller is capable of receiving a signal from the second detection member (320) and adjusting the first adjustment mechanism (200) according to the size of the rolling channel (101).

14. The rolling device according to claim 12, characterized in that The detection mechanism (300) further includes a third detection member (330) electrically connected to the controller, wherein the third detection member (330) is provided on the frame (500) and is used to detect the rolling pressure of the rolling mechanism (100), and the controller is capable of receiving a signal from the third detection member (330) and adjusting the first adjustment mechanism (200) according to the rolling pressure of the rolling mechanism (100).

15. A battery production system, characterized in that: The invention comprises a rolling device as described in any one of claims 1 to 14.

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