A continuous rolling device for solid-state positive electrode sheet

Abstract

The utility model discloses a kind of continuous roll press devices for solid positive pole piece, comprising: unwinding mechanism, for placing battery pole roll to be handled and conveying battery pole piece;Rolling mechanism is set to the downstream of the unwinding unit, including at least two sequentially arranged rolling units for rolling battery pole piece;Winding mechanism is set to the downstream of the rolling mechanism, for winding after rolling battery pole piece.According to the continuous roll press device for solid positive pole piece of the utility model, by setting at least two sequentially connected rolling units for rolling battery pole piece, multiple rolling of battery pole piece can be realized in one winding and unwinding process, reduce the generation of finished product pole piece surface wrinkle, stress line, improve the quality of battery pole piece.Moreover, the rolling of battery pole piece is realized by one winding and unwinding, and the operation is simple, which can improve the rolling efficiency of battery pole piece.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a continuous rolling device for solid positive electrode sheets. Background Technology

[0002] In the production process of battery electrodes such as solid-state cathode sheets, the electrodes are typically rolled to increase their compaction density. Multiple rolling processes are usually required to ensure a dense bond between the battery active material and the foil, resulting in uniform thickness. However, existing battery electrode rolling devices often cause defects such as indentations, stress lines, and even cracks, wrinkles, and warping after the rolling process. Therefore, there is an urgent need to design a rolling device that can reduce defects such as stress lines and wrinkles in the electrodes. Utility Model Content

[0003] Therefore, this invention provides a continuous rolling device for solid positive electrode sheets in an attempt to solve or at least alleviate at least one of the problems mentioned above.

[0004] According to one aspect of the present invention, a continuous rolling device for solid positive electrode sheets is provided, comprising:

[0005] An unwinding mechanism is used to place the battery electrode rolls to be processed and to transport the battery electrode sheets.

[0006] A rolling mechanism, located downstream of the unwinding unit, includes at least two sequentially arranged rolling units for rolling battery electrodes.

[0007] A winding mechanism, located downstream of the rolling mechanism, is used to wind up the rolled battery electrode sheets.

[0008] Optionally, the rolling unit includes a rolling unit support, an adjustment mechanism, a first roller, and a second roller. The rolling unit support includes a top plate and a bottom plate. The first roller is fixed to the top plate of the rolling unit support by a first fixing member. The second roller is connected to the adjustment mechanism by a second fixing member. The adjustment mechanism is connected to the bottom plate. The axes of the first roller and the second roller are parallel to the bottom plate in a plane perpendicular to the electrode sheet feeding direction.

[0009] Optionally, the adjustment mechanism includes a first adjustment mechanism, which includes a first wedge block and a first mounting plate. The first mounting plate is arranged parallel to the base plate. The first wedge block is arranged on the first mounting plate corresponding to the second fixing member. An inclined contact surface is provided between the first wedge block and the second fixing member to cooperate with each other. The position of the first roller is adjusted by relative sliding. A locking positioning member is provided between the first wedge block and the second fixing member.

[0010] Optionally, the adjustment mechanism further includes a second adjustment mechanism, which includes a second mounting plate, a slide rail, and a slider that matches the slide rail. The second mounting plate is arranged parallel to the first mounting plate, the slider is connected to the side of the first mounting plate opposite to the side where the first wedge block is located, the slide rail is mounted on the second mounting plate, and the second mounting plate is connected to the base plate.

[0011] Optionally, the roller pressing unit further includes a pressure mechanism disposed between the second mounting plate and the base plate. The pressure mechanism includes a first power component and a guide bearing. The power output end of the first power component is connected to the second mounting plate, and the other end is connected to the base plate. A guide bearing is disposed between the second mounting plate and the base plate.

[0012] Optionally, the first power component is an electric cylinder.

[0013] Optionally, the number of the rolling units is six.

[0014] Optionally, the winding mechanism includes a winding mechanism bracket, a first reel, and a second power component, wherein the second power component is connected to one side of the winding mechanism bracket, and the first reel is disposed on the winding mechanism bracket and one end is connected to the second power component.

[0015] Optionally, the battery electrode rolling device further includes a first tension mechanism disposed downstream of the unwinding mechanism and upstream of the rolling mechanism, and a second tension mechanism disposed downstream of the rolling mechanism and upstream of the winding mechanism, for tensioning the battery electrode.

[0016] Optionally, the first tension mechanism and the second tension mechanism are implemented by a tension assembly, which includes a tension roller, a tension roller electric cylinder, and a tension assembly bracket, wherein the two ends of the tension roller are connected to the tension assembly bracket through the tension roller electric cylinder.

[0017] According to the continuous rolling device for solid-state positive electrode sheets of this invention, by setting at least two sequentially connected rolling units for rolling battery electrode sheets, multiple rolling processes can be completed on the battery electrode sheets in one winding and unwinding process, achieving one-time shaping of the battery electrode sheets. This effectively avoids the problem of local peeling or misalignment between the foil and the battery active material caused by the winding and unwinding process when the active material and foil are not pressed together after a single rolling of the electrode sheet. It also reduces the generation of wrinkles and stress lines on the surface of the finished electrode sheet, improving the quality of the battery electrode sheets. Moreover, achieving the rolling and shaping of battery electrode sheets through one winding and unwinding process is simple to operate, improves the rolling and shaping efficiency of battery electrode sheets, and saves costs. Attached Figure Description

[0018] To achieve the foregoing and related objectives, certain illustrative aspects are described herein in conjunction with the following description and accompanying drawings. These aspects indicate various ways in which the principles disclosed herein may be practiced, and all aspects and their equivalents are intended to fall within the scope of the claimed subject matter. The foregoing and other objectives, features, and advantages of this disclosure will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings. Throughout this disclosure, the same reference numerals generally refer to the same parts or elements.

[0019] Figure 1 This is a schematic diagram of the structure of a battery electrode rolling device 100 according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a roller pressing unit 200 according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the mechanism of a winding unit 130 according to an embodiment of the present utility model;

[0022] Figure 4 This is a structural schematic diagram of a tension assembly 300 according to an embodiment of the present invention;

[0023] Figure 5 This is a structural schematic diagram of a first tension mechanism 140 according to an embodiment of the present invention.

[0024] Figure label:

[0025] 100. Battery electrode rolling device; 110. Unwinding mechanism; 120. Rolling mechanism; 130. Winding mechanism; 140. First tension mechanism; 150. Second tension mechanism; 131. Winding mechanism support; 132. First reel; 133. Second power assembly; 200. Rolling unit; 210. First roller; 220. Second roller; 230. Base plate; 240. Top plate; 250. First adjusting mechanism; 260. Second adjusting mechanism; 270. Pressure mechanism; 211. First fixing component; 221. Second fixing component; 251. First wedge block; 252. First mounting plate; 261. Second mounting plate; 262. Slide rail; 263. Slider; 271. First power assembly; 272. Guide bearing; 273. First pad block; 300. Tension assembly; 310. Tension roller; 320. Tension roller electric cylinder; 330. Tension assembly bracket; 340. Tension roller fixing block. Detailed Implementation

[0026] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0027] With the advancement of battery technology, higher requirements have been placed on battery cell electrodes. Traditional battery electrode rolling devices are very prone to causing defects such as indentations, stress lines, and even cracks, wrinkles, and warping on the electrodes. Through repeated experiments and in-depth research, the inventors of this utility model have discovered that the main reason for the aforementioned defects is that existing battery electrode rolling devices can only achieve one rolling process in a single unwinding and rewinding operation. One unwinding and rewinding operation is not enough to complete the electrode shaping, requiring multiple unwinding and rewinding operations. After the first rolling process of the battery electrode rolling device, the active material of the battery and the foil are not compacted. At this time, rewinding and rewinding can easily cause local peeling or misalignment between the foil and the active material of the battery. Consequently, when rolling is performed again, the electrode will produce defects such as indentations, stress lines, and even cracks, wrinkles, and warping. In other words, when rolling and unwinding are performed alternately, it is easy to cause defects such as indentations, stress lines, and even cracks, wrinkles, and warping on the electrodes. To address the aforementioned technical problems, the inventors of this invention attempted to increase the rolling pressure using existing battery electrode rolling devices, aiming to compact the battery active material and foil after one rolling cycle of the battery electrode. However, the results were unsatisfactory. After repeated and in-depth research, the inventors discovered that by incorporating at least two sequentially arranged rolling units for rolling the battery electrode in the rolling mechanism, the above problems could be effectively solved.

[0028] According to some embodiments of this utility model, a continuous rolling device for solid positive electrode sheets is provided, which will be described below in conjunction with... Figures 1 to 5 This utility model will now be described.

[0029] like Figure 1As shown, a battery electrode rolling device 100 according to an embodiment of the present invention is a continuous rolling device for solid positive electrode sheets, including an unwinding mechanism 110, a rolling mechanism 120, and a winding mechanism 130. The unwinding unit 110 is used to place the battery electrode roll to be processed and to transport the battery electrode sheet downstream. The rolling mechanism 120 is located downstream of the unwinding mechanism 110 and is used to roll and shape the battery electrode sheet, making the battery active material densely bonded to the foil. To achieve the final rolling and shaping of the battery electrode sheet through a single unwinding and winding operation, the rolling mechanism 120 includes at least two sequentially arranged rolling units 200, so that the battery electrode sheet passes through all the rolling units in sequence for multiple rolling operations. The shaping of the battery electrode sheet is completed in one unwinding and winding process, which can effectively reduce the electrode sheet wrinkles and stress lines caused by each unwinding and winding after rolling, improving the quality and yield of the battery electrode sheet. At the same time, because the number of unwinding and winding operations is reduced, the processing efficiency of the battery electrode sheet is effectively improved. In this embodiment, the sequentially arranged rolling units in the rolling mechanism can adopt the same structure or different structures. In the prior art, the rolling mechanism 120 typically includes only one rolling unit, thus requiring repeated rolling of the battery electrode sheet, resulting in low production efficiency, inability to continuously roll, and numerous stress lines on the electrode sheet surface. The battery electrode sheet rolling device 100 of this embodiment solves the above-mentioned problems in the prior art because the rolling mechanism 120 includes at least two sequentially connected rolling units 200.

[0030] In one specific implementation of this utility model, the number of rolling units is set to 6. Experiments show that in the battery electrode rolling device of this utility model, when the number of rolling units is set to six, compared with the cases where the number of rolling units is 2, 3, 4, 5, 7, 8 or more, the output battery electrode has the least stress pattern and can effectively avoid wrinkles.

[0031] According to one embodiment of the present invention, the battery electrode rolling device 100 further includes a first tension mechanism 140 disposed downstream of the unwinding mechanism 110 and upstream of the rolling mechanism 120, and a second tension mechanism 150 disposed downstream of the rolling mechanism 120 and upstream of the winding mechanism 130. The first tension mechanism 140 can stabilize the orientation of the battery electrode and prevent deviation, while realizing dynamic adjustment and control of tension to ensure that the battery electrode is subjected to uniform force when entering the rolling mechanism 120, thereby reducing the occurrence of stress lines. The second tension mechanism 150 has the same effect, ensuring that the battery electrode output from the upstream rolling mechanism 120 achieves dynamic tension adjustment, stabilizing the orientation of the battery electrode, and ensuring that the winding mechanism neatly winds up the battery electrode.

[0032] According to one embodiment of the present invention, the roller pressing units 200 arranged sequentially in the roller pressing mechanism employ the same mechanism. For example... Figure 2As shown, the rolling unit 200 includes a rolling unit support, a roller adjustment mechanism, a first roller 210, and a second roller 220. The rolling unit support includes a base plate 230 and a top plate 240. The first roller 210 is fixedly connected to the top plate 240 by a first fixing member 211, such that the axis of the first roller 210 is parallel to the base plate 230 and perpendicular to the direction of the battery electrode. The second roller 220 is arranged parallel to the first roller 210 in a direction perpendicular to the first base plate; that is, the axes of the first roller 210 and the second roller 220 are parallel to the base plate 230 in a plane perpendicular to the direction of the electrode. The second roller 220 is fixed by a second fixing member 221, which is connected to the base plate 230 through the adjustment mechanism. The roller adjustment mechanism is used to adjust the relative position of the second roller 220 and the first roller 210 to accommodate battery electrodes of different thicknesses; or to adjust the rolling pressure of the first roller 210 and the second roller 220 on the battery electrode.

[0033] like Figure 2 As shown, according to one embodiment of the present invention, the adjustment mechanism includes a first adjustment mechanism 250 and a second adjustment mechanism 260. The first adjustment mechanism, implemented by sliding, includes a first wedge block 251 and a first mounting plate 252. The first mounting plate 252 is arranged parallel to the base plate 230 within the roller pressing unit support. The first wedge block 251 and the second fixing member 221 are correspondingly connected on the first mounting plate 252. An inclined contact surface is provided between the first wedge block 251 and the second fixing member 221, and by relative sliding, the first roller moves in the YZ plane in a direction parallel to the inclined contact surface. When the second roller 220 moves to a predetermined position, a locking positioning member is provided between the second fixing member 221 and the first wedge block 251 to position and lock the first wedge block 251 and the second fixing member 221. In a specific example, the locking positioning member is provided as follows: at least one row of positioning holes distributed along the sliding direction is provided on the second fixing member 221 and the first wedge block 251. A locking positioning bolt is inserted into the positioning hole corresponding to the inclined contact surface of the second fixing member 221 and the first wedge block 251, thereby locking the second fixing member 221 and the first wedge block 251.

[0034] During the adjustment process, after the second roller 220 is adjusted by the first adjustment mechanism 250, the second roller 220 generates displacement in both the first direction (Y direction) and the second direction (Z direction). To ensure that the axes of the first roller 210 and the second roller 220 are parallel in a plane perpendicular to the electrode tape feeding direction, the position of the second roller 220 in the second direction (Z direction) needs to be adjusted by the second adjustment mechanism 260. Typically, the second adjustment mechanism 260 is implemented by a sliding device. According to one embodiment of the present invention, the second adjustment mechanism 260 includes a second mounting plate 261, a slide rail 262, and a slider 263 that matches the slide rail. The second mounting plate 261 is arranged parallel to the base plate 230. The slider 263 is connected to the side of the first mounting plate 252 away from the second roller, and the slide rail 262 is arranged along the second direction (Z direction) on the side of the second mounting plate 261 close to the second roller. The second mounting plate 261 is connected to the base plate 230. The slider 263 is slidably connected to the slide rail 262. The slider 263 can drive the first mounting plate 252 to move in the second direction, thereby driving the second roller 220 to move in the second direction to maintain the relative position with the slide rail. That is, the axes of the first roller 210 and the second roller 220 are parallel to the base plate in a plane perpendicular to the Z direction.

[0035] According to yet another embodiment of the present invention, such as Figure 2 The rolling unit 200 also includes a pressure mechanism 270. The pressure mechanism 270 is disposed between the second mounting plate 261 and the base plate 230, and is adapted to adjust the second mounting plate in a first direction (i.e., the Y direction), thereby driving the second roller 220 to move, adjusting the gap between the first roller 210 and the second roller 220, as well as the squeezing force between the first roller 210 and the second roller 220, to meet the rolling requirements of different battery electrode sheets. In one example, the pressure mechanism 270 includes a first power assembly 271 and a guide bearing 272. The power output end of the first power assembly 271 is connected to the second mounting plate 261, and the other end is connected to the base plate 230. The guide bearing 272 is disposed between the second mounting plate 261 and the base plate 230 to guide the second mounting plate 261 to move in a direction perpendicular to the base plate 230, without tilting or deviating. Typically, the guide bearing 272 is disposed at the four apex corners of the rectangular second mounting plate 261. In yet another specific example, the first power assembly 271 and the base plate 230 can be connected via a first pad 273, depending on the height of the first power assembly 271 perpendicular to the base plate and the distance between the second mounting plate 261 and the base plate 230. Typically, the first power assembly 271 is implemented via an electric cylinder, and the pressure mechanism 270 may include one or more first power assemblies 271, which can cause the second mounting plate to be uniformly stressed and move along the guide bearing in the first direction.

[0036] come Figure 3According to one embodiment of the present invention, the winding mechanism 130 includes a winding mechanism support 131, a first roll 132, and a second power assembly 133. The second power assembly 133 is connected to one side of the winding mechanism support 131. The first roll 132 is mounted on the winding mechanism support 131 at both ends, and one end is connected to the second power assembly 133. It can rotate under the drive of the second power assembly 133 to wind up the rolled battery electrode roll. Typically, the first roll 132 is implemented by an air shaft, and the expansion and contraction of the shaft are controlled by air pressure to quickly and accurately load and unload the battery electrode roll.

[0037] Furthermore, the unwinding mechanism 110 has the same or similar structure as the winding mechanism 130. The unwinding mechanism 110 includes an unwinding mechanism support, a second reel, and a third power assembly. The third power assembly is fixedly connected to one side of the unwinding mechanism support. The second reel is mounted on the unwinding mechanism support, with one end connected to the third power assembly, and can rotate under the drive of the third power assembly, causing the electrode roll to rotate and output the battery electrode sheets. Similarly, the second reel can also be implemented using an air-operated shaft, controlling the expansion and contraction of the shaft through air pressure, thereby quickly and accurately releasing and fixing the battery electrode roll.

[0038] Before introducing the first tension mechanism, the tension assembly 300 will be described first. The tension assembly 300 is used to tighten the battery electrodes, preventing them from becoming loose and overlapping, which would affect the rolling operation and the quality of the electrodes. According to one embodiment of this utility model, as... Figure 4 As shown, the tension assembly 300 includes a tension roller 310, a tension roller cylinder 320, and a tension assembly support 330. Both ends of the tension roller 310 are connected to the free ends of the tension roller cylinder 320, and the tension roller cylinder 320 is connected to the tension assembly support 330. The tension roller 310 is used to press the battery electrode sheets during transport, and the tension roller cylinder 320 can adjust the pressure of the tension roller 310 on the battery electrode sheets. Furthermore, the tension roller 310 can also change the output direction of the battery electrode sheets. In a specific example, the tension roller 310 is connected to the tension roller cylinder 320 via a tension roller fixing block 340.

[0039] According to one embodiment of the present invention, such as Figure 5As shown, the first tension mechanism 140 includes at least one tension component 300. In a specific example, the first tension mechanism 140 includes three tension components arranged sequentially, with the tension rollers of the three tension components having different heights in the first direction (Y direction). For example, the tension roller of the middle tension component is lower in the Y direction than the tension rollers on both sides, so that when the battery electrode passes through the first tension mechanism 140, the tension rollers press the battery electrode tightly. Furthermore, the tension components not only tighten the battery electrode but also have a guiding function, changing the electrode conveying direction. For example, the tension component near the roller pressing mechanism 120 can make the electrode parallel to the base plate when it enters the roller pressing mechanism 120, so that the battery electrode can be evenly stressed after entering the roller pressing mechanism, reducing the generation of wrinkles and stress lines.

[0040] According to another embodiment of the present invention, a second tension mechanism 150, disposed downstream of the rolling mechanism 120 and upstream of the winding mechanism 130, has the same structure as the first tension mechanism 140, including at least one tension component 300. In a specific example, the second tension mechanism 150 includes three tension components 300 arranged sequentially. The tension rollers of the three tension components have different heights in the Y direction, with the tension roller of the middle tension component being lower in the Y direction than the tension rollers on both sides. This ensures that the battery electrode is pressed tightly by each tension roller when it passes through the second tension mechanism 150, guaranteeing uniform force on the battery electrode during transmission and preventing wrinkles and stress lines from forming. Furthermore, the tension components also serve a guiding function.

[0041] Experimental comparison results

[0042] The inventors of this utility model conducted experimental verification and comparison between Implementation Examples 1 to 6 and the comparative examples. The comparative examples represent prior art, with a rolling mechanism consisting of only one rolling unit. Implementation Examples 1 to 6 are specific implementations of the technical solution of this utility model, with the number of rolling units in their rolling mechanisms being 2, 3, 4, 5, 6, and 8, respectively. The inventors observed the rolled electrode sheets after the comparative experiments and recorded the experimental results as shown in the table below.

[0043] Comparative experimental results

[0044] Comparative Example 1 yes yes yes yes Implementation Example 1 2 yes no no no Implementation Example 2 3 yes no no no Implementation Example 3 4 yes no no no Implement Example 4 5 yes no no no Implement Example 5 6 no no no no Implementation of Example 6 8 yes no yes no

[0045] The results of the comparative experiments show that the technical solution of this invention has a very good technical effect on reducing the generation of wrinkles and stress lines on the surface of finished electrode sheets and improving the quality of battery electrode sheets. Furthermore, when the number of rolling units in the rolling mechanism is 6, it basically achieves the optimal technical effect, and the processed electrode sheets are free of stress lines and wrinkles.

[0046] According to the continuous rolling device for solid-state positive electrode sheets of this invention, by setting at least two sequentially connected rolling units for rolling battery electrode sheets, multiple rolling processes, consistent with the number of rolling units, are completed in a single winding and unwinding process. This achieves one-time shaping of the battery electrode sheet, effectively avoiding the problem of local peeling or misalignment between the foil and battery active material caused by single rolling of the electrode sheet when there is no compression between the active material and the foil. This reduces the generation of wrinkles and stress lines on the surface of the finished electrode sheet, improving the quality of the battery electrode sheet. Moreover, achieving the rolling and shaping of the battery electrode sheet in a single winding and unwinding process is simple to operate, improves the rolling and shaping efficiency of the battery electrode sheet, and saves costs.

[0047] In the description of the embodiments of this utility model, it should be understood that the terms "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] It should be understood that expressions such as "comprising" and "may include" used in this invention indicate the presence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this invention, terms such as "comprising" and / or "having" are to be interpreted as indicating a particular characteristic, number, operation, constituent element, component, or combination thereof, but not to exclude the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0049] In this embodiment of the invention, expressions including ordinal numbers such as "first" and "second" may modify the elements. However, such elements are not limited by the above expressions. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used to distinguish one element from other elements.

[0050] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0051] In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of the embodiments of this utility model, when a component is referred to as "connected" or "accessed" to other components, it should be understood that the component is not only directly connected to or accessed to other components, but also that another component may exist between the component and other components. On the other hand, when a component is referred to as "directly connected" or "directly accessed" to other components, it should be understood that there is no component between them. When a component is referred to as "actively connected" to other components, it means that the positional relationship between the component and other components is variable, such as the relationship between a slide rail and a slider, where the slider can slide on the slide rail, and the slide rail and the track are actively connected. When a component is referred to as "fixedly connected" to other components, it means that the positional relationship between the component and other components after assembly is relatively fixed.

[0053] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Although this utility model has been described with reference to a limited number of embodiments, those skilled in the art will understand from the above description that other embodiments can be conceived within the scope of this utility model described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and instructional purposes, and not for interpreting or limiting the subject matter of this utility model. Therefore, many modifications and alterations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. Regarding the scope of this utility model, the disclosure made herein is illustrative and not restrictive, and the protection scope of this patent application shall be determined by the scope of the claims.

Claims

1. A continuous rolling device for solid positive electrode sheets, characterized in that, include: An unwinding mechanism is used to place the battery electrode rolls to be processed and to transport the battery electrode sheets. A rolling mechanism, located downstream of the unwinding unit, includes at least two sequentially arranged rolling units for rolling battery electrodes. A winding mechanism, located downstream of the rolling mechanism, is used to wind up the rolled battery electrode sheets.

2. The continuous rolling device for solid-state positive electrode sheets as described in claim 1, characterized in that, The rolling unit includes a rolling unit support, an adjustment mechanism, a first roller, and a second roller. The rolling unit support includes a top plate and a bottom plate. The first roller is fixed to the top plate of the rolling unit support by a first fixing member. The second roller is connected to the adjustment mechanism by a second fixing member. The adjustment mechanism is connected to the bottom plate. The axes of the first roller and the second roller are parallel to the bottom plate in a plane perpendicular to the electrode tape feeding direction.

3. The continuous rolling device for solid-state positive electrode sheets as described in claim 2, characterized in that, The adjustment mechanism includes a first adjustment mechanism, which includes a first wedge block and a first mounting plate. The first mounting plate is arranged parallel to the base plate. The first wedge block is arranged on the first mounting plate corresponding to the second fixing member. The first wedge block and the second fixing member are provided with mutually cooperating inclined contact surfaces. The position of the first roller is adjusted by relative sliding. A locking positioning member is provided between the first wedge block and the second fixing member.

4. The continuous rolling device for solid-state positive electrode sheets as described in claim 3, characterized in that, The adjustment mechanism further includes a second adjustment mechanism, which includes a second mounting plate, a slide rail, and a slider that matches the slide rail. The second mounting plate is arranged parallel to the first mounting plate, the slider is connected to the side of the first mounting plate opposite to the side where the first wedge block is located, the slide rail is mounted on the second mounting plate, and the second mounting plate is connected to the base plate.

5. The continuous rolling device for solid-state positive electrode sheets as described in claim 4, characterized in that, The roller pressing unit further includes a pressure mechanism, which is disposed between the second mounting plate and the base plate. The pressure mechanism includes a first power component and a guide bearing. The power output end of the first power component is connected to the second mounting plate, and the other end is connected to the base plate. A guide bearing is disposed between the second mounting plate and the base plate.

6. The continuous rolling device for solid-state positive electrode sheets as described in claim 5, characterized in that, The first power component is an electric cylinder.

7. The continuous rolling apparatus for solid-state positive electrode sheets as described in any one of claims 1-6, characterized in that, The number of roller pressing units is six.

8. The continuous rolling apparatus for solid-state positive electrode sheets as described in any one of claims 1-6, characterized in that, The winding mechanism includes a winding mechanism bracket, a first reel, and a second power component. The second power component is connected to one side of the winding mechanism bracket, and the first reel is mounted on the winding mechanism bracket with one end connected to the second power component.

9. The continuous rolling apparatus for solid-state positive electrode sheets as described in any one of claims 1-6, characterized in that, It also includes a first tension mechanism disposed downstream of the unwinding mechanism and upstream of the rolling mechanism, and a second tension mechanism disposed downstream of the rolling mechanism and upstream of the winding mechanism, for tensioning the battery electrode sheet.

10. The continuous rolling device for solid-state positive electrode sheets as described in claim 9, characterized in that, The first tension mechanism and the second tension mechanism are implemented by a tension assembly, which includes a tension roller, a tension roller electric cylinder, and a tension assembly bracket. The two ends of the tension roller are connected to the tension assembly bracket through the tension roller electric cylinder.

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