Compaction device for battery pole piece

Abstract

The embodiment of the invention discloses a compaction device for a battery pole piece, the compaction device comprises a shell, a compression roller part and a limiting part, the compression roller part is arranged on the shell, the compression roller part comprises a compaction channel extending along a first direction, and the compression roller part compacts the battery pole piece positioned in the compaction channel and drives the battery pole piece to move in the compaction channel. The limiting part is arranged on the shell, the limiting part is movably contacted with two sides of the battery pole piece to limit the movement of the battery pole piece in a second direction, and the second direction is different from the first direction. When the battery pole piece moves along the compaction channel, the limiting component can restrain the battery pole piece to move along the first direction without deflection, so that the condition that the battery pole piece inclines when sliding in the compression roller component is avoided, and the quality of the battery pole piece is ensured.

Description

Technical Field

[0001] This application relates to the field of battery electrode preparation technology, and in particular to a compaction device for battery electrodes. Background Technology

[0002] Sodium-ion batteries are rechargeable batteries that primarily rely on the movement of sodium ions between the positive and negative electrodes to function. Similar to lithium-ion batteries, sodium-ion batteries offer advantages such as high safety, strong thermal stability, and excellent electrochemical performance, and have replaced lithium-ion batteries in some applications.

[0003] During the manufacturing process of sodium-ion batteries, the battery electrode and its conductive coating need to be compacted to gradually bond them together and improve the production qualification rate of the battery electrode. However, in actual use, the battery electrode is compacted during the sliding process. The battery electrode is prone to deflection on the compaction roller during the sliding process. When the battery electrode is deflected and then compacted again, it will affect the quality of the battery electrode. Summary of the Invention

[0004] In view of this, this application aims to provide a compaction device for battery electrodes to solve the problem of substandard quality caused by the deflection of battery electrodes during the compaction process.

[0005] This application provides a compaction device for battery electrodes, including a housing, a pressure roller assembly, and a limiting component. The pressure roller assembly is disposed on the housing and includes a compaction channel extending along a first direction. The pressure roller assembly compacts the battery electrode located within the compaction channel and drives the battery electrode to move within the compaction channel. The limiting component is disposed on the housing and makes movable contact with both sides of the battery electrode to restrict the movement of the battery electrode in a second direction, which is different from the first direction.

[0006] In one possible implementation, the limiting component includes a first driving member, a bidirectional screw, and two movable components. The first driving member is disposed on the housing. The bidirectional screw is connected to the first driving member and includes a first end near the first driving member and a second end away from the first driving member. The two movable components are respectively disposed corresponding to the first and second ends of the bidirectional screw. The first driving member drives the bidirectional screw to rotate, thereby causing the two movable components to move closer to each other and contact the battery electrode.

[0007] In one possible implementation, each moving component includes a moving member, a connecting member, and a plurality of limiting wheels. The moving member is movably mounted on a bidirectional screw. The connecting member is mounted on the moving member and extends along the compaction channel. The plurality of limiting wheels are movably mounted on the connecting member, and the moving member drives the limiting wheels to move via the connecting member, so that the limiting wheels contact the battery electrode. The compaction device also includes at least one guide component, which is located at the outlet end and / or inlet end of the compaction channel. The guide component is movably connected to the connecting member, and the connecting member can move along the guide component.

[0008] In one possible implementation, the connector includes a connecting plate having a limiting groove facing the center of the compaction channel, and a plurality of limiting wheels arranged within the limiting groove along the compaction channel. The guide assembly includes at least one connecting rod and a connecting block, the at least one connecting rod being disposed on the housing in a second direction. The connecting block is connected to an end of the connecting plate and is movably connected to the connecting rod.

[0009] In one possible implementation, the pressure roller assembly includes a second drive member, a plurality of first pressure roller groups, and a second pressure roller group, with the second drive member disposed on a housing. The plurality of first pressure roller groups are spaced apart on the housing along a first direction. Each first pressure roller group includes two first sub-pressure rollers arranged along a third direction, forming a portion of a compaction channel between the two first sub-pressure rollers. Second pressure roller groups are disposed between adjacent first pressure roller groups, each second pressure roller including two second sub-pressure rollers arranged along a third direction, forming a portion of a compaction channel between the two second sub-pressure rollers. The second drive member drives the first sub-pressure rollers to rotate; the outer diameter of the first sub-pressure rollers is larger than the outer diameter of the second sub-pressure rollers, and the third direction differs from both the first and second directions.

[0010] In one possible implementation, the distance of the compaction channel in the third direction is reduced from the inlet end to the outlet end.

[0011] In one possible implementation, the first sub-pressure roller has a water passage cavity arranged along its own length. The compaction device also includes a heating component and a pumping component, which, together with the water passage cavity, form a hot water circulation path through a flow guiding component.

[0012] In one possible implementation, the heating assembly includes a water tank, a guide plate, and a heating element, with the water tank disposed on the housing. The guide plate is disposed within the water tank to form a heating channel. The heating element is disposed within the heating channel. The guide assembly includes a first guide pipe, which is movably connected to a first sub-pressure roller and communicates with a water passage cavity.

[0013] In one possible implementation, the compaction device further includes a heat dissipation assembly disposed on the housing and located at the outlet end of the compaction channel, with the battery electrode located within the heat dissipation space of the heat dissipation assembly.

[0014] In one possible implementation, the heat dissipation assembly includes a heat dissipation fan and two sets of heat dissipation pipes, with the heat dissipation fan mounted on the housing. The two sets of heat dissipation pipes are spaced apart along a third direction, with a heat dissipation space between them, corresponding to the outlet end of the compaction channel. Each set of heat dissipation pipes includes at least one heat dissipation pipe with multiple heat dissipation holes, through which the battery electrode passes.

[0015] Compared with the prior art, the beneficial effects of this application are: The compaction device provided in this application includes a housing, a pressure roller assembly, and a limiting component. The pressure roller assembly forms a compaction channel for compacting the battery electrode. The compaction channel extends along a first direction, which is a front-to-back direction. The limiting component can limit the battery electrode in the left-to-right direction, meaning the limiting component can interact with the left and right sides of the battery electrode. When the battery electrode moves along the compaction channel, the limiting component can constrain the battery electrode to move along the first direction without deflection, preventing the battery electrode from skewing when sliding in the pressure roller assembly, thereby ensuring the quality of the battery electrode.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the structural schematic diagrams of the compaction device provided in the embodiments of this application; Figure 2 A second schematic diagram of the compaction device provided in one embodiment of this application; Figure 3 A schematic diagram of the structure of a pressure roller component provided in one embodiment of this application; Figure 4 A schematic diagram of the structure of the first sub-pressure roller provided in one embodiment of this application; Figure 5 A partial schematic diagram of a compaction device provided in one embodiment of this application; Figure 6 A third schematic diagram of the compaction device provided in one embodiment of this application; Figure 7 A schematic diagram of the structure of a heating assembly provided in one embodiment of this application; Figure 8 This is a schematic diagram of a heat dissipation component provided in one embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Shell, 2. Pressure roller assembly; 20. Compaction channel; 21. Second drive component; 211. Second motor; 212. Transmission gear; 22. First pressure roller group; 221. First sub-pressure roller; 222. Water passage cavity; 223. Sealing component; 224. Separating rib; 23. Second pressure roller group; 231. Second sub-pressure roller. 31 First driving component, 32 Bidirectional screw, 331 Moving component, 332 Connecting component, 333 Limit wheel. 41 Connecting rod, 42 Connecting block 5. Heating components, 50. Heating channels, 51. Water tank, 52. Baffle plate, 53. Heating element. 6 pumping components, 7. Flow guiding assembly, 71. First flow guiding tube, 8. Heat dissipation components, 81. Heat dissipation fan, 82. Heat dissipation pipe, 821. Air inlet pipe, 822. Air outlet pipe, 83. Heat dissipation space, 84. Heat dissipation holes, 85. Partition. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0025] This application provides a compaction device for battery electrodes. Figure 1 and Figure 2 As shown, the device includes a housing 1, a pressure roller component 2, and a limiting component. The pressure roller component 2 is disposed on the housing 1 and includes a compaction channel 20 extending along a first direction. The pressure roller component 2 compacts the battery electrode sheet located within the compaction channel 20 and drives the battery electrode sheet to move within the compaction channel 20. The limiting component is disposed on the housing 1 and makes movable contact with both sides of the battery electrode sheet to restrict the movement of the battery electrode sheet in a second direction, which is different from the first direction.

[0026] The housing 1 is a hollow structure used to house other structural components of the compaction device. It is understood that the housing 1 can be a frame structure with open ends to facilitate the entry and exit of the battery electrodes.

[0027] A pressure roller component 2 is mounted on the housing 1, and the pressure roller component 2 forms a compaction channel 20. The compaction channel 20 is used for compacting the battery electrode sheets. The compaction channel 20 extends along a first direction, and it is worth noting that the compaction channel 20 is located inside the housing 1. The first direction extends along a front-to-back direction. For each battery electrode sheet, it has a front side and a rear side. The front side of the battery electrode sheet is fed into the inlet end of the compaction channel 20. Under the action of the pressure roller component 2, the battery electrode sheet moves forward until the rear side of the battery electrode sheet is also compacted.

[0028] The battery electrode also has a left side and a right side. The second direction differs from the first direction; it is a left-right direction. A limiting component is mounted on the housing 1. This limiting component can limit the battery electrode in the left-right direction, meaning it can interact with the left and right sides of the battery electrode. When the battery electrode moves along the compaction channel 20, the limiting component can constrain its movement along the first direction to prevent deflection, thus avoiding skewing when the battery electrode slides in the pressure roller component 2 and ensuring the quality of the battery electrode.

[0029] In one possible implementation, Figure 1 and Figure 2 As shown, the limiting component includes a first driving member 31, a bidirectional screw 32, and two moving components. The first driving member 31 is mounted on the housing 1. The bidirectional screw 32 is connected to the first driving member 31 and includes a first end near the first driving member 31 and a second end away from the first driving member 31. The two moving components are respectively positioned corresponding to the first and second ends of the bidirectional screw 32. The first driving member 31 drives the bidirectional screw 32 to rotate, thereby causing the two moving components to move closer to each other and contact the battery electrode.

[0030] The first driving member 31 includes a first motor, the output shaft of which is connected to a bidirectional screw 32. The first motor drives the bidirectional screw 32 to rotate. The first driving member 31 is located on the outside of the housing 1, and the housing 1 has a hole structure that allows the output shaft of the first motor to pass through. After passing through the housing 1, the output shaft of the first motor connects to the bidirectional screw 32. The bidirectional screw 32 is located inside the housing 1. Specifically, the bidirectional screw 32 includes a first end and a second end, the first end being located close to the first driving member 31 and connected to the output shaft of the first motor, and the second end being rotatably connected to the housing 1. The bidirectional screw 32 is disposed within the housing 1 along a second direction.

[0031] Two movable components are respectively disposed at the first and second ends of the bidirectional screw 32. That is, the two movable components are arranged in the left-right direction. The movable components are movably mounted on the bidirectional screw 32. When the bidirectional screw 32 rotates under the drive of the first motor, the two movable components can move closer to or further away from each other. Specifically, before contacting the battery electrode, the distance between the two movable components is at its maximum, and the movable components are in their initial positions. When the battery electrode is located at the entrance end of the compaction channel 20, the first motor drives the bidirectional screw 32 to rotate. At this time, the two movable components move closer to each other, and the distance between them shortens until the movable components contact the left and right sides of the battery electrode, respectively, thus completing the limiting of the battery electrode in the second direction. After the battery electrode is compacted, the first motor can drive the bidirectional screw 32 to rotate, allowing the two movable components to move further away from each other until they reach their initial positions.

[0032] In one possible implementation, Figure 1 and Figure 2 As shown, each moving component includes a moving part 331, a connecting part 332, and multiple limiting wheels 333. The moving part 331 is movably mounted on the bidirectional screw 32. The connecting part 332 is mounted on the moving part 331 and extends along the compaction channel 20. The multiple limiting wheels 333 are movably mounted on the connecting part 332. The moving part 331 drives the limiting wheels 333 to move through the connecting part 332, so that the limiting wheels 333 contact the battery electrode. The compaction device also includes at least one guide component, which is disposed at the outlet end and / or inlet end of the compaction channel 20. The guide component is movably connected to the connecting part 332, and the connecting part 332 can move along the guide component.

[0033] The movable component 331 is movably connected to the bidirectional screw 32. When the bidirectional screw 32 rotates, the movable component 331 moves along the bidirectional screw 32. Specifically, the movable component 331 is a movable block.

[0034] The connector 332 is connected to the movable member 331, and the connector 332 can move synchronously with the movable member 331. It is worth noting that the connector 332 is arranged along the extension direction of the compaction channel 20, which can provide lateral positional limitation for the battery electrode sheet throughout the compaction process, preventing the battery electrode sheet from tilting at any position during the compaction process.

[0035] Multiple limiting wheels 333 are movably mounted on the connector 332. When the battery electrode moves along the compaction channel 20, the multiple limiting wheels 333 roll into contact with the left and right sides of the battery electrode, allowing the battery electrode to move smoothly within the compaction channel 20 and avoiding interference with the movement of the battery electrode during the compaction process.

[0036] For the connector 332 and multiple limiting wheels 333 in the moving assembly, since they are distributed along the extension direction of the compaction channel 20, and since the inlet end of the compaction channel 20, the moving part 331 in the moving assembly can provide support force to one end of the connector 332. By setting a guide component at the outlet end of the compaction channel 20, the guide component can provide guidance for the movement of the two moving parts 331, ensuring that the moving parts 331 do not deviate when they approach or move away from each other. At the same time, it can also provide support force to the other end of the connector 332, so that the connector 332 and multiple limiting wheels 333 can be fully supported, and the moving assembly can move smoothly in the left and right directions.

[0037] Of course, the guide component can be set not only at the outlet end of the compaction channel 20, but also at the inlet end of the compaction channel 20. That is, both ends of the compaction channel 20 are equipped with guide components, which can provide a more stable guiding and supporting force for the connector 332.

[0038] In one possible implementation, Figure 1 and Figure 2 As shown, the connector 332 includes a connecting plate having a limiting groove facing the center of the compaction channel 20, and a plurality of limiting wheels 333 are arranged in the limiting groove along the compaction channel 20. The guide assembly includes at least one connecting rod 41 and a connecting block 42, the at least one connecting rod 41 being disposed on the housing 1 along a second direction. The connecting block 42 is connected to the end of the connecting plate and is movably connected to the connecting rod 41.

[0039] The connector 332 is a connecting plate with a C-shaped structure and an inwardly opening limiting groove. Multiple limiting wheels 333 are rotatably mounted within the limiting groove and connected to the connecting plate. Notably, the wheel surfaces of the limiting wheels 333 protrude beyond the opening of the limiting groove, facilitating contact between the limiting wheels 333 and the battery electrodes and preventing interference between the battery electrodes and the connecting plate.

[0040] The guide assembly includes a connecting block 42 and a connecting rod 41. The connecting block 42 is located at the end of the connecting plate, and the connecting rod 41 is distributed in the left-right direction. The connecting rod 41 is arranged parallel to the bidirectional screw 32 and is positioned on the outer side relative to the bidirectional screw 32. There can be one or two connecting rods 41. The connecting block 42 has a hole structure for the connecting rod 41 to pass through, allowing the connecting block 42 to slide on the connecting rod 41.

[0041] Specifically, under the action of the first driving member 31, the bidirectional screw 32 rotates, causing the two moving components to move closer to each other. Among them, the bidirectional screw 32 drives the moving member 331 connected to it to move, the moving member 331 drives the connecting plate to move, the connecting plate drives the limiting wheel 333 and the connecting block 42 to move, and the connecting block 42 moves along the connecting rod 41, providing a guiding force for the overall movement of the moving components.

[0042] There are four connecting rods 41 in total. Two connecting rods 41 are located at the inlet end of the compaction channel 20, and two connecting rods 41 are located at the outlet end of the compaction channel 20. The two connecting rods 41 are arranged in the vertical direction.

[0043] The connecting rod 41 is fixedly installed in the inner cavity of the housing 1. Two connecting blocks 42 are slidably installed on the outer surface of two adjacent connecting rods 41. The top of the two connecting blocks 42 located on the left or right side of the compaction channel 20 is fixedly connected to a connecting plate. Several limiting wheels 333 are rotatably installed on the inner surface of the connecting plate. At the bottom of the two connecting plates, a bidirectional threaded rod is threadedly connected to the moving part 331. One end of the bidirectional threaded rod is fixedly connected to a first driving part 31. The first driving part 31 is fixedly installed on one side of the housing 1.

[0044] When the limiting component is working, the battery electrode is first placed between the two first sub-pressure rollers 221 on the same vertical plane. Then, the output shaft of the first drive member 31 is rotated with the bidirectional threaded rod. The bidirectional threaded rod can bring the two connecting plates closer to each other. At this time, the connecting plates slide along the connecting rod 41 through the connecting block 42. The connecting rod 41 serves to limit the two connecting blocks 42.

[0045] Furthermore, the connecting block 42 can slide stably with the connecting plate. The two connecting plates, each carrying several limiting wheels 333, move closer to the battery electrode. When the outer surfaces of the limiting wheels 333 on both sides contact the battery electrode, the connecting plates stop moving. At this time, rotating the first sub-pressure roller 221 can drive the battery electrode to slide. The two first sub-pressure rollers 221 on the same vertical plane squeeze the battery electrode, and the limiting wheels 333 on both sides limit the battery electrode, thereby achieving the compaction of the battery electrode.

[0046] In one possible implementation, Figure 3 and Figure 4 As shown, the pressure roller assembly 2 includes a second drive member 21, a plurality of first pressure roller groups 22, and a second pressure roller group 23. The second drive member 21 is mounted on the housing 1. The plurality of first pressure roller groups 22 are spaced apart on the housing 1 along a first direction. Each first pressure roller group 22 includes two first sub-pressure rollers 221 arranged along a third direction, forming a portion of a compaction channel 20 between the two first sub-pressure rollers 221. The second pressure roller group 23 is disposed between adjacent first pressure roller groups 22. Each second pressure roller group 23 includes two second sub-pressure rollers 231 arranged along a third direction, forming a portion of the compaction channel 20 between the two second sub-pressure rollers 231. The second drive member 21 drives the first sub-pressure rollers 221 to rotate. The outer diameter of the first sub-pressure rollers 221 is larger than the outer diameter of the second sub-pressure rollers 231. The third direction is different from the first and second directions.

[0047] The pressure roller assembly 2 includes a second drive member 21 and two types of pressure roller groups, namely a first pressure roller group 22 and a second pressure roller group 23. The outer diameter of the first sub-pressure roller 221 in the first pressure roller group 22 is larger than that of the second sub-pressure roller 231 in the second pressure roller group 23. The first sub-pressure roller 221 is driven by the second drive member 21 and rotates relative to the housing 1. Both the first sub-pressure roller 221 and the second sub-pressure roller 231 can rotate relative to the housing 1, wherein the first sub-pressure roller 221 is the driving pressure roller and the second pressure roller 231 is the driven pressure roller.

[0048] The first pressure roller group 22 has multiple groups. The multiple groups of first pressure roller groups 22 are distributed at intervals within the housing 1, and a second pressure roller group 23 is provided between adjacent first pressure roller groups 22. Each second pressure roller group 23 includes at least one set of second sub-pressure rollers 231.

[0049] Specifically, each first pressure roller group 22 includes two first sub-pressure rollers 221 vertically distributed in the up-down direction. Multiple second pressure roller groups 23 are located between adjacent first pressure roller groups 22; for example, three second pressure roller groups 23 are provided between adjacent first pressure roller groups 22. Each second pressure roller group 23 includes two second sub-pressure rollers 231 vertically distributed in the up-down direction.

[0050] The second driving component 21 includes a second motor 211 and a transmission gear 212. The output shaft of the second motor 211 is connected to the transmission gear 212, which is rotatably mounted on the outside of the housing 1 and connected to the first sub-pressure roller 221. The number of transmission gears 212 can be arranged according to actual needs, and there can be multiple transmission gears 212.

[0051] Specifically, Figure 3 and Figure 4 As shown, in order to complete the compaction work during the movement of the battery electrode sheets, the output shaft of the second motor 211 drives the transmission gear 212 to rotate. The transmission gear 212 drives the first sub-pressure roller 221 to rotate. Several first sub-pressure rollers 221 and second sub-pressure rollers 231 are divided into upper and lower rows. The first sub-pressure rollers 221 connected to the transmission gear 212 are all in the lower row. The top of the second sub-pressure rollers 231 in the lower row is at the same horizontal plane as the top of the first sub-pressure rollers 221 in the lower row. Several first sub-pressure rollers 221 and second sub-pressure rollers 231 in the upper row... 1. The arrangement is not horizontal, and the two first sub-pressing rollers 221 on the side closer to the limiting wheel 333 are far apart, while the two first sub-pressing rollers 221 on the side farther away from the limiting wheel 333 are close together and their distance is the same as the thickness of the compacted battery electrode sheet. The bottom of the several second sub-pressing rollers 231 in the upper row and the first sub-pressing rollers 221 located at both ends of the upper row are on the same inclined plane. This arrangement can gradually reduce the distance of the compaction channel 20 in the vertical direction, so that the first sub-pressing rollers 221 and the second presser rollers can always be in close contact with the surface of the battery electrode sheet and continuously compact the battery electrode sheet.

[0052] In one possible implementation, Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the first sub-pressure roller 221 has a water passage cavity 222 arranged along its own length. The compaction device also includes a heating component 5 and a pumping component 6. The heating component 5, the pumping component 6, and the water passage cavity 222 form a hot water circulation path through the flow guiding component 7.

[0053] The first sub-pressure roller 221 has a water passage cavity 222, which is used for hot water flow to heat the first sub-pressure roller 221, so that the battery electrode can complete the compaction process.

[0054] The compaction device also includes a heating component 5 and a pumping component 6. The heating component 5 is used to provide hot water, and the pumping component 6 is used to circulate the hot water according to a preset path. In order to form a complete circulation path, the heating component 5, the pumping component 6, and the first sub-pressing roller 221 are connected by a flow guiding component 7, so that hot water can be provided to the first sub-pressing roller 221.

[0055] Specifically, the first sub-pressure roller 221 has a hollow structure, and a sealing member 223 is provided inside the first sub-pressure roller 221. The sealing member 223 extends along the length direction of the first sub-pressure roller 221, and the outer diameter of the sealing member 223 is smaller than the inner diameter of the first sub-pressure roller 221. A separating rib 224 is provided between the sealing member 223 and the inner wall of the first sub-pressure roller 221, thereby stably forming a water passage cavity 222 between the inner wall of the first sub-pressure roller 221 and the sealing member 223.

[0056] In one possible implementation, such as Figure 7 As shown, the heating assembly 5 includes a water tank 51, a guide plate 52, and a heating element 53. The water tank 51 is mounted on the housing 1. The guide plate 52 is disposed within the water tank 51 to form a heating channel 50. The heating element 53 is disposed within the heating channel 50. The guide assembly 7 includes a first guide pipe 71, which is movably connected to the first sub-pressure roller 221 and communicates with the water passage cavity 222.

[0057] The heating assembly 5 includes a water tank 51, which is mounted on the housing 1, for example, at the top of the housing 1. The water tank 51 has multiple guide plates 52 inside, which divide the internal space of the water tank 51 to form heating channels 50. Heating elements 53 are disposed within the heating channels 50 to heat the water within the heating channels 50, thereby providing hot water to the first sub-pressure roller 221.

[0058] The pumping assembly 6 is located at the outlet of the water tank 51. The pumping assembly 6 is used to transport hot water from the water tank 51 to the first sub-pressure roller 221 through the flow guiding assembly 7.

[0059] The flow guiding component 7 includes a first flow guiding pipe 71, which is sleeved on the first sub-pressure roller 221. The first flow guiding pipe 71 communicates with the water passage cavity 222 inside the first sub-pressure roller 221, enabling hot water to flow between the water passage cavity 222 and the first flow guiding pipe 71. It is conceivable that the first flow guiding pipe 71 is fixedly connected to the housing 1, and the first sub-pressure roller 221 moves relative to the housing 1 under the action of the second driving member 21. A relative movement structure is provided between the first flow guiding pipe 71 and the first sub-pressure roller 221, ensuring that the hot water communication requirement is met while the first flow guiding pipe 71 does not interfere with the rotation of the first sub-pressure roller 221 relative to the housing 1.

[0060] In one possible implementation, the compaction device further includes a heat dissipation component 8, which is disposed on the housing 1 and located at the outlet end of the compaction channel 20. The battery electrode is located within the heat dissipation space 83 of the heat dissipation component 8.

[0061] The heat dissipation component 8 is disposed inside or outside the housing 1. The heat dissipation component 8 is used to dissipate heat from the battery electrode after it has been compacted. The flowing air can carry away the heat on the battery electrode, accelerate the removal of heat from the surface of the battery electrode, and accelerate the cooling of the battery electrode.

[0062] In one possible implementation, such as Figure 8 As shown, the heat dissipation assembly 8 includes a heat dissipation fan 81 and two sets of heat dissipation pipes 82. The heat dissipation fan 81 is mounted on the housing 1. The two sets of heat dissipation pipes 82 are spaced apart along a third direction, and there is a heat dissipation space 83 between the two sets of heat dissipation pipes 82. The heat dissipation space 83 corresponds to the outlet end of the compaction channel 20. Each set of heat dissipation pipes 82 includes at least one heat dissipation pipe 82, and the heat dissipation pipe 82 is provided with multiple heat dissipation holes 84. The battery electrode passes through the heat dissipation space 83.

[0063] The heat dissipation assembly 8 includes a heat dissipation fan 81 and a heat dissipation pipe 82. The heat dissipation fan 81 drives airflow. The heat dissipation pipe 82 includes an air inlet pipe 821 and an air outlet pipe 822. Air enters through the air inlet pipe 821 and is blown towards the battery terminals through the air outlet pipe 822. The air outlet pipe 822 is provided with multiple heat dissipation holes 84.

[0064] Specifically, each set of heat dissipation pipes 82 is arranged vertically to form a heat dissipation space 83. The battery electrode plates removed from the compaction channel 20 can enter the heat dissipation space 83 and be rapidly cooled by the accelerated airflow blown out by the exhaust pipe 822.

[0065] In one specific embodiment, two partitions 85 are fixedly installed in the inner cavity of the housing 1, and four air outlet pipes 822 are rotatably installed in the inner cavity of the housing 1, with the four air outlet pipes 822 located between the two partitions 85.

[0066] Two air inlet pipes 821 are fixedly installed on the outer surface of the housing 1. A cooling fan 81 is fixedly installed inside the air inlet pipe 821. The inner cavity of the air inlet pipe 821 is connected to the inner cavity of the air outlet pipe 822.

[0067] When the compaction device is working, after the battery electrode is compacted, the battery electrode needs to be cooled to allow it to cool and set. During use, the battery electrode passes between the four air outlet pipes 822, and the battery electrode will rotate the air outlet pipes 822 as it passes through them. At this time, the cooling fan 81 blows air into the inner cavity of the air inlet pipe 821. The flowing air passes through the air inlet pipe 821 and enters the inner cavity of the air outlet pipe 822, and finally blows out through the ventilation holes on the outer surface of several air outlet pipes 822. During the air blowing out, the heat on the battery electrode is carried away, so as to achieve the purpose of rapidly cooling the battery electrode.

[0068] A first guide pipe 71 is connected to one side of the transmission gear 212. The first guide pipe 71 passes through the transmission gear 212 and communicates with the inner cavity of the first sub-pressure roller 221. Several first guide pipes 71 near the transmission gear 212 are connected to a pumping assembly 6. A water tank 51 is fixedly connected to one side of the pumping assembly 6. Both the water tank 51 and the pumping assembly 6 are fixedly installed on the top of the housing 1. Several first guide pipes 71 on the other side are fixedly installed on the bottom of the water tank 51. Several guide plates 52 are fixedly installed inside the water tank 51, and heating elements 53 are fixedly installed between the guide plates 52.

[0069] The process involves filling the first guide pipe 71, the first sub-pressure roller 221, and the water tank 51 with water. The water is then heated by the heating element 53. Simultaneously, the pumping assembly 6 drives the water along the water tank 51 to the inner cavity of the first sub-pressure roller 221, and from there flows through the first guide pipe 71 and back into the water tank 51. During this process, the heating element 53 heats all the water. Installing a sealing element 223 inside the first sub-pressure roller 221 increases the water flow rate, preventing the water from remaining inside the roller for too long and causing a drop in temperature. After heating, the water transfers heat to the first sub-pressure roller 221, thus reducing the temperature of the roller. 21. The outer surface heats up, and the compaction of the battery electrode begins. When the first sub-pressing roller 221 compacts the battery electrode, the heat on the first sub-pressing roller 221 is transferred to the battery electrode, making the battery electrode softer and thus easier to compact. The heated water is constantly circulating. Therefore, in order to keep the water at a high temperature, the heating element 53 continuously heats the water to achieve the purpose of keeping the water at a high temperature. Several guide plates 52 can increase the flow path of the water in the inner cavity of the water tank 51, making it easier for the heating element 53 to heat the water to a high temperature. The inner cavity of the water tank 51 is not full of water, and it is not necessary to heat the water to a boiling state. After heating the water to a high temperature, it is only necessary to keep the water at a high temperature. Here, the high temperature is 70°C to 85°C.

[0070] Working principle: First, the water in the inner cavity of the water tank 51 is heated by the heating element 53. Then, the pumping component 6 circulates the heated water in the inner cavities of the water tank 51, the first guide pipe 71, and the first sub-pressure roller 221. The circulating water heats the first sub-pressure roller 221. Next, the battery electrode is placed between the first sub-pressure rollers 221. The output shaft of the second motor 211 drives the transmission gear 212 to rotate. All transmission gears 212 start to rotate in the same direction. The transmission gears 212 drive the first sub-pressure roller 221 to rotate. The battery electrode at the top of the first sub-pressure roller 221 is driven. When the battery electrode moves, the first sub-pressure roller 221 and the second sub-pressure roller 231 on the upper side of the battery electrode will squeeze the battery electrode, thereby achieving the purpose of compacting the battery electrode. The inclined setting of the first sub-pressure roller 221 and the second sub-pressure roller 231 at the top can achieve continuous compaction of the battery electrode, and also gradually compact the battery electrode.

[0071] When the battery electrode is placed between the first sub-pressure rollers 221, the output shaft of the first drive unit 31 first drives the bidirectional threaded rod to rotate. The bidirectional threaded rod, in conjunction with the connecting rod 41, limits the two connecting blocks 42. When the connecting plates slide, the limiting action of the connecting rod 41 ensures stable sliding. The two connecting plates, along with the limiting wheels 333, move closer together, causing the limiting wheels 333 to be in close contact with the outer surface of the battery electrode. This action effectively limits the battery electrode, preventing it from becoming skewed when sliding between the first sub-pressure rollers 221. After the battery electrode is compacted, it passes through the air outlet pipe 822. The distance between the upper and lower air outlet pipes 822 is the same as the thickness of the compacted battery electrode, which can further limit the compacted battery electrode and prevent it from tilting up. The cooling fan 81 blows air into the inner cavity of the air inlet pipe 821 and the air outlet pipe 822, which eventually causes airflow around the air outlet pipe 822. The flowing air can carry away the heat on the battery electrode, accelerate the removal of heat from the surface of the battery electrode, and accelerate the cooling of the battery electrode.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A compaction device for battery electrodes, characterized in that, include: case; A pressure roller component is disposed on the housing. The pressure roller component includes a compaction channel extending along a first direction. The pressure roller component compacts the battery electrode located in the compaction channel and drives the battery electrode to move within the compaction channel. A limiting component is disposed on the housing, and the limiting component makes movable contact with both sides of the battery electrode to restrict the movement of the battery electrode in a second direction, which is different from the first direction.

2. The compaction device according to claim 1, characterized in that, The limiting component includes: A first driving component is disposed on the housing; A bidirectional screw is connected to the first driving member, the bidirectional screw including a first end close to the first driving member and a second end away from the first driving member; Two movable components are respectively disposed corresponding to the first end and the second end of the bidirectional screw. The first driving member drives the bidirectional screw to rotate, so as to bring the two movable components closer to each other and into contact with the battery electrode.

3. The compaction device according to claim 2, characterized in that, Each of the moving components includes: A movable component is movably mounted on the bidirectional screw; A connector is provided on the movable member, and the connector extends along the compaction channel; Multiple limiting wheels are movably mounted on the connecting member. The moving member drives the limiting wheels to move through the connecting member so that the limiting wheels contact the battery electrode. The compaction device further includes: At least one guide component is disposed at the outlet end and / or inlet end of the compaction channel, the guide component being movably connected to the connector, the connector being movable along the guide component.

4. The compaction device according to claim 3, characterized in that, The connector includes a connecting plate having a limiting groove facing the center of the compaction channel, and a plurality of limiting wheels are arranged in the limiting groove along the compaction channel; The guiding component includes: At least one connecting rod is disposed on the housing along the second direction; A connecting block is connected to the end of the connecting plate, and the connecting block is movably connected to the connecting rod.

5. The compaction device according to any one of claims 1 to 4, characterized in that, The pressure roller component includes: A second driving component is disposed on the housing; Multiple first pressure roller groups are spaced apart on the housing along the first direction. Each first pressure roller group includes two first sub-pressure rollers arranged along the third direction, and a portion of the compaction channel is formed between the two first sub-pressure rollers. A second pressure roller group is disposed between adjacent first pressure roller groups. The second pressure roller group includes two second sub-pressure rollers arranged along the third direction, and a portion of the compaction channel is formed between the two second sub-pressure rollers. The second driving member drives the first sub-pressure roller to rotate. The outer diameter of the first sub-pressure roller is larger than the outer diameter of the second sub-pressure roller. The third direction is different from the first direction and the second direction.

6. The compaction device according to claim 5, characterized in that, From the inlet end to the outlet end, the distance of the compaction channel in the third direction decreases.

7. The compaction device according to claim 5, characterized in that, The first sub-pressure roller is provided with a water passage cavity arranged along its own length direction; The compaction device also includes a heating component and a pumping component, wherein the heating component, the pumping component, and the water passage cavity form a hot water circulation path through a flow guiding component.

8. The compaction device according to claim 7, characterized in that, The heating component includes: A water tank is mounted on the casing. A baffle plate is installed inside the water tank to form a heating channel; A heating element is disposed within the heating channel; The flow guiding assembly includes a first flow guiding pipe, which is movably connected to the first sub-pressure roller and communicates with the water passage cavity.

9. The compaction device according to claim 1, characterized in that, The compaction device further includes: A heat dissipation assembly is disposed on the housing and located at the outlet end of the compaction channel, and the battery electrode is located within the heat dissipation space of the heat dissipation assembly.

10. The compaction device according to claim 9, characterized in that, The heat dissipation component includes: A cooling fan is mounted on the housing. Two sets of heat dissipation pipes are spaced apart along a third direction, and there is a heat dissipation space between the two sets of heat dissipation pipes. The heat dissipation space corresponds to the outlet end of the compaction channel. Each set of heat dissipation pipes includes at least one heat dissipation pipe, and the heat dissipation pipe is provided with multiple heat dissipation holes. The battery electrode passes through the heat dissipation space.

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