Pole piece extension device
By designing a liftable and axially movable extension component in the electrode extension device, the problem of not being able to adjust the extension thickness and position in the prior art is solved, thus achieving protection and effective extension of the electrode and improving the quality of the electrode.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-31
AI Technical Summary
Existing electrode stretching devices cannot adjust the stretching thickness and position according to the thickness and width of the electrode, which can easily damage the electrode and has limited use.
An electrode stretching device is designed, including multiple stretching mechanisms on a mounting frame. The first mounting shaft is liftable and axially movable, and the second mounting shaft is equipped with movable stretching components. The electrode position is detected by a sensor, and the position and spacing of the stretching components are adjusted to adapt to electrodes of different thicknesses and widths.
It enables the adjustment of the thickness and position of the extension according to the thickness and width of the electrode, avoiding damage to the electrode, ensuring the extension effect, and forming reinforcing ribs when necessary to improve the strength of the electrode.
Smart Images
Figure CN224058403U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of battery pole pieces, in particular to a pole piece stretching device. BACKGROUND
[0002] Lithium batteries are a kind of high-performance, environmentally friendly and safe battery type, which are widely used in various fields. Among them, the pole piece is an important structure of the lithium battery, and the pole piece needs to be stretched during the production of the lithium battery to avoid the pole piece from being wrinkled, rolled and the like, so as to ensure the quality of the lithium battery. Among them, the winding material pole piece stretching device is an important component indispensable in the production process of the lithium battery, which is a mechanical device for ensuring the flatness and stretchability of the pole piece in the winding equipment.
[0003] However, the existing pole piece stretching device cannot adjust the stretching thickness according to the thickness of the pole piece during use, so as to easily cause damage to the pole piece or affect the stretching effect; at the same time, since the widths of different pole pieces are different, the existing pole piece stretching device cannot adjust the stretching position according to the width of the pole piece during use, and has limitations in use. CONTENT OF THE INVENTION
[0004] To solve the above technical problems, the application provides a pole piece stretching device, which can adjust the stretching thickness according to the thickness of the pole piece, and can adjust the stretching position according to the width of the pole piece, so as to avoid damage to the pole piece during stretching and ensure the stretching effect.
[0005] The technical scheme adopted by the application to solve the technical problems is:
[0006] A pole piece stretching device, comprising a mounting frame, a plurality of stretching mechanisms are uniformly distributed on the mounting frame along the length direction thereof;
[0007] The stretching mechanism comprises a first mounting shaft and a second mounting shaft arranged in parallel, and the first mounting shaft is arranged above the second mounting shaft in a lifting manner.
[0008] A plurality of first stretching components are movably arranged on the first mounting shaft in the axial direction thereof, two second stretching components are movably arranged on the second mounting shaft corresponding to each first stretching component, and the first stretching component is located between the two second stretching components corresponding thereto.
[0009] Preferably, the mounting frame comprises a bottom plate and mounting plates arranged on both sides of the bottom plate, and both ends of the first mounting shaft and the second mounting shaft are respectively connected to two mounting plates.
[0010] Preferably, a plurality of lifting assemblies are arranged on the mounting plate along the length direction thereof, two corresponding lifting assemblies on the two mounting plates form a pair, each pair of lifting assemblies corresponds to one first mounting shaft, and the two ends of the first mounting shaft are connected to one lifting assembly respectively.
[0011] Preferably, a sliding groove extending along the height direction of the mounting plate is arranged on the mounting plate.
[0012] The lifting assembly comprises a sliding block slidingly connected to the sliding groove and a motor arranged at the top end of the sliding groove, a screw rod is connected between the output shaft of the motor and the sliding block, the inner side of the sliding block is provided with a mounting hole, and the end of the first mounting shaft is inserted into the mounting hole.
[0013] Preferably, a sensor for detecting the position of the to-be-stretched pole piece is arranged in the mounting rack, and the lifting assembly, the first stretching assembly and the second stretching assembly are electrically connected to the sensor.
[0014] Preferably, a through hole corresponding to each second mounting shaft is arranged on the bottom plate, and the sensor is arranged on both sides of the through hole.
[0015] Preferably, the first mounting shaft and the second mounting shaft are the same in structure and are defined as mounting shafts, and the first stretching assembly and the second stretching assembly are the same in structure and are defined as stretching assemblies.
[0016] The stretching assembly comprises a clamping sleeve, the clamping sleeve is movably sleeved on the mounting shaft and locked by a locking mechanism.
[0017] Preferably, the locking mechanism comprises a limiting block arranged at one end of the clamping sleeve and extending away from the clamping sleeve, a threaded hole is arranged on the limiting block, a limiting bolt is threadedly connected in the threaded hole, and when the limiting bolt is rotated to abut against the mounting shaft, the clamping sleeve and the mounting shaft are relatively locked.
[0018] Preferably, the locking mechanism further comprises a clamping block arranged on the inner wall of the clamping sleeve and a clamping groove arranged on the outer wall of the mounting shaft, the clamping groove extends along the length direction of the mounting shaft, and the clamping block is slidingly connected in the clamping groove.
[0019] Preferably, the stretching assembly further comprises a hub motor sleeved on the outer wall of the clamping sleeve, a guide wheel is sleeved on the hub motor, and a grommet is sleeved on the outer wall of the guide wheel.
[0020] The pole piece stretching device has the beneficial effects that: a plurality of first stretching components are movably arranged on the first mounting shaft in the axial direction, two second stretching components are movably arranged on the second mounting shaft corresponding to each first stretching component, and the first stretching component is located between the two second stretching components, the pole piece is located between the first stretching component and the second stretching component during stretching, and one first stretching component and two second stretching components form a stretching unit, and the pole piece is stretched, and since the first stretching component and the second stretching component can be moved and adjusted in the axial direction, the positions of different stretching units can be adjusted according to the width of the pole piece, and the stretching effect on the pole piece is ensured.
[0021] Meanwhile, since the first mounting shaft and the second mounting shaft are parallel, and the first mounting shaft is arranged above the second mounting shaft in a lifting manner, the first mounting shaft can be lifted according to the thickness of the pole piece, so as to change the distance between the first mounting shaft and the second mounting shaft, so that the distance between the first stretching component and the second stretching component is adjusted, so that the pole piece with different thicknesses is adapted, and damage to the pole piece during stretching is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 FIG. 1 is a structural schematic view of a pole piece stretching device according to the present application.
[0023] Figure 2 FIG. 2 is a structural schematic view of the pole piece stretching device according to the present application without a stretching mechanism.
[0024] Figure 3 FIG. 3 is a structural schematic view of a lifting assembly of the pole piece stretching device according to the present application.
[0025] Figure 4 FIG. 4 is a structural schematic view of a stretching mechanism of the pole piece stretching device according to the present application.
[0026] Figure 5 FIG. 5 is a structural schematic view of a stretching unit of the pole piece stretching device according to the present application.
[0027] Figure 6 FIG. 6 is a structural schematic view of a stretching component of the pole piece stretching device according to the present application.
[0028] Wherein: 1- mounting rack, 11- bottom plate, 111- through hole, 12- mounting plate, 121- sliding slot, 2- extension mechanism, 21- first mounting shaft, 22- second mounting shaft, 23- first extension assembly, 231- clamping sleeve, 232- wheel hub motor, 233- guide wheel, 234- spacer ring, 24- second extension assembly, 25- locking mechanism, 251- limit block, 252- limit bolt, 253- clamping groove, 254- clamping block, 3- lifting assembly, 31- sliding block, 32- motor, 33- screw rod, 34- mounting hole, 4- sensor, 5- fixed plate, 6- fixed bolt, 100- extension unit. DETAILED DESCRIPTION
[0029] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be interpreted broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0030] As shown in Figure 1 , 2 , 5, the polar piece extension device of the preferred embodiment of the present application comprises a mounting rack 1, and a plurality of extension mechanisms 2 are uniformly distributed on the mounting rack 1 along the length direction thereof. The side wall of the mounting rack 1 is provided with a fixed plate 5, a fixed hole is formed on the fixed plate 5, a fixed bolt 6 is arranged on the fixed hole, and the lower end of the fixed bolt 6 is threadedly connected with an external use site, so as to fix the polar piece extension device at the use site.
[0031] The extension mechanism 2 comprises a first mounting shaft 21 and a second mounting shaft 22 arranged in parallel, and the first mounting shaft 21 is arranged above the second mounting shaft 22 in a lifting manner;
[0032] The first mounting shaft 21 is movably provided with a plurality of first extension assemblies 23 along the axial direction thereof, and the second mounting shaft 22 is movably provided with two second extension assemblies 24 corresponding to each first extension assembly 23, and the first extension assembly 23 is located between the two second extension assemblies 24 corresponding thereto. That is, one first extension assembly 23 and two second extension assemblies 24 form an extension unit 100, and the pole piece is located between the first extension assembly 23 and the second extension assembly 24 during extension, so that only the extension unit 100 can realize the extension of the pole piece. Each extension mechanism 2 forms a plurality of extension units 100, and the plurality of extension units 100 are arranged along the width direction of the pole piece to ensure the extension effect of the pole piece.
[0033] Based on the above technical features, the pole piece extension device is characterized in that a plurality of first extension assemblies 23 are movably arranged on the first mounting shaft 21 along the axial direction thereof, and the second mounting shaft 22 is movably provided with two second extension assemblies 24 corresponding to each first extension assembly 23, and the first extension assembly 23 is located between the two second extension assemblies 24 corresponding thereto. During extension, the pole piece is located between the first extension assembly 23 and the second extension assembly 24, and one first extension assembly 23 and two second extension assemblies 24 form an extension unit 100, and the pole piece is extended. Since the first extension assembly 23 and the second extension assembly 24 can be moved and adjusted along the axial direction, the positions of different extension units 100 can be adjusted according to the width of the pole piece, thereby ensuring the extension effect of the pole piece.
[0034] Meanwhile, since the first mounting shaft 21 and the second mounting shaft 22 are parallel, and the first mounting shaft 21 is movably arranged above the second mounting shaft 22, the first mounting shaft 21 can be raised or lowered according to the thickness of the pole piece, so as to change the distance between the first mounting shaft 21 and the second mounting shaft 22, thereby adjusting the distance between the first extension assembly 23 and the second extension assembly 24, so as to adapt to pole pieces of different thicknesses, and avoid damaging the pole piece during extension.
[0035] As can be seen from the above, each extension mechanism 2 forms a plurality of extension units 100 (for example, three extension units 100 are formed on each extension mechanism 2 in the embodiment of the application), and the application is provided with a plurality of extension mechanisms 2. In specific use, the extension units 100 of adjacent two extension mechanisms 2 can be arranged in an interlaced manner, or all the extension units 100 can be distributed in a matrix arrangement manner. The specific use can be adjusted according to the extension purpose of the pole piece. Figure 1 With the drawings Figure 4 Each extension mechanism 2 forms three extension units 100, and the application is provided with a plurality of extension mechanisms 2. In specific use, the extension units 100 of adjacent two extension mechanisms 2 can be arranged in an interlaced manner, or all the extension units 100 can be distributed in a matrix arrangement manner. The specific use can be adjusted according to the extension purpose of the pole piece.
[0036] The extension of the electrode sheet in this application is mainly used to flatten the electrode sheet and prevent it from curling. Therefore, there is a gap between the lowest point of the first extension component 23 and the highest point of the second extension component 24, and the height of the gap is approximately smaller than the thickness of the electrode sheet. At this time, the positions of the first extension component 23 and the second extension component 24 can be adjusted arbitrarily.
[0037] However, in actual use, the empty foil area of the electrode can also be compressed to cause plastic deformation, forming a reinforcing rib. In this case, the lower end of the first extension component 23 and the upper end of the second extension component 24 overlap in the horizontal direction. That is, the first extension component 23 can be regarded as a protrusion, and the space between the two second extension components 24 can be regarded as a groove. The protrusion and the groove cooperate to compress the empty foil area of the electrode, causing the empty foil area to be recessed to form a groove, which acts as a reinforcing rib and improves the strength of the electrode. At this time, the first extension component 23 needs to be set corresponding to the empty foil area of the electrode.
[0038] like Figures 2-3 As shown, in this embodiment, the mounting frame 1 includes a base plate 11 and mounting plates 12 disposed on both sides of the base plate 11. Both ends of the first mounting shaft 21 and the second mounting shaft 22 are respectively connected to two mounting plates 12. To facilitate the lifting and lowering adjustment of the first mounting shaft 21, multiple lifting components 3 are provided on the mounting plate 12 along its length. Two corresponding lifting components 3 on two mounting plates 12 form a pair. Each pair of lifting components 3 corresponds to one first mounting shaft 21, and both ends of the first mounting shaft 21 are respectively connected to one lifting component 3. Thus, under the action of the lifting components 3, the lifting and lowering of the first mounting shaft 21 is achieved.
[0039] Specifically, the mounting plate 12 is provided with a slide groove 121 extending along its height direction; the lifting assembly 3 includes a slider 31 slidably connected to the slide groove 121 and a motor 32 disposed at the top of the slide groove 121. The output shaft of the motor 32 is connected to the slider 31 via a screw 33. The inner side of the slider 31 is provided with a mounting hole 34, and the end of the first mounting shaft 21 is inserted into the mounting hole 34 to realize the connection between the first mounting shaft 21 and the lifting assembly 3. When it is necessary to adjust the height of the first extension assembly 23, the motor 32 is started, driving the screw 33 to rotate. The screw 33 is threadedly connected to the slider 31, so that under the action of the rotation of the screw 33, the slider 31 moves up and down along the slide groove 121, realizing the height adjustment of the first extension assembly 23.
[0040] In the specific work, the two lifting assemblies 3 of the same pair are started and stopped synchronously to ensure that the first extension assemblies 23 on the first mounting shafts 21 are lifted synchronously. The lifting assemblies 3 of different pairs are not lifted at the same time, that is, the lifting adjustment time of different first mounting shafts 21 is different, which is determined by the position of the pole piece. If the height of all the first extension assemblies 23 is adjusted before the extension starts, the pole piece will not be convenient to stretch into the space between the first extension assembly 23 and the second extension assembly 24 in the process of advancing, so only when the pole piece moves to the corresponding position, the lifting assembly 3 at the corresponding position first lifts the first extension assembly to ensure that the pole piece passes through, and then lowers the pole piece for extension to ensure the normal extension.
[0041] In the embodiment, for the convenience of controlling the lifting of each lifting assembly 3, the inside of the mounting frame 1 is provided with a sensor 4 for detecting the position of the pole piece to be extended, and the lifting assembly 3, the first extension assembly 23 and the second extension assembly 24 are electrically connected with the sensor 4. Thus, the lifting of the lifting assembly 3 and the work of the first extension assembly 23 and the second extension assembly 24 can be controlled in real time according to the position of the pole piece.
[0042] In the specific installation, the bottom plate 11 is provided with a through hole 111 corresponding to each second mounting shaft 22, the through hole 111 is rectangular, and the length direction of the through hole 111 is the same as the length direction of the second mounting shaft 22, and the sensor 4 is arranged on both sides of the through hole 111. Preferably, one sensor 4 is arranged at each end of each side of the through hole 111 to ensure the detection effect of the pole piece. At the same time, the through hole 111 can reduce the weight of the bottom plate 11, reduce the use of materials and reduce the cost.
[0043] Please refer to the accompanying drawings Figures 4-6In the embodiment, the first mounting shaft 21 and the second mounting shaft 22 are preferably identical in structure and are defined as mounting shafts; the first extension assembly 23 and the second extension assembly 24 are also preferably identical in structure and are defined as extension assemblies. The extension assembly comprises a clamping sleeve 231 movably sleeved on the mounting shaft and locked by a locking mechanism 25. That is, when the position of the extension assembly needs to be adjusted, the locking mechanism 25 is first loosened, and then the corresponding extension assembly is moved to a determined position and locked by the locking mechanism 25, so that the adjustment is simple and convenient. Meanwhile, the extension assembly further comprises a hub motor 232 sleeved on the outer wall of the clamping sleeve 231, the hub motor 232 is sleeved with a guide wheel 233, and the outer wall of the guide wheel 233 is sleeved with a silica gel gasket ring 234. When the extension is performed, the hub motor is started to drive the guide wheel to rotate along with the gasket ring, so as to realize the extension of the pole piece. Since the gasket ring 234 directly contacts the pole piece during the extension, the gasket ring 234 is made of silica gel, so as to avoid direct damage to the pole piece. The hub motor 232 is a structure in the prior art, and only the clamping sleeve 231 in the present application is replaced by a fixed shaft in the middle, and the remaining structure is the same, which will not be described here.
[0044] The locking mechanism 25 comprises a limiting block 251 arranged at one end of the clamping sleeve 231 and extending away from the clamping sleeve 231, the limiting block 251 is provided with a threaded hole, and a limiting bolt 252 is threadedly connected in the threaded hole. When the limiting bolt 252 is rotated to abut against the mounting shaft, the relative locking between the clamping sleeve 231 and the mounting shaft is achieved. Meanwhile, in order to further ensure the locking effect, the locking mechanism 25 further comprises a clamping block 254 arranged on the inner wall of the clamping sleeve 231 and a clamping groove 253 arranged on the outer wall of the mounting shaft, the clamping groove 253 extends along the length direction of the mounting shaft, and the clamping block 254 is slidably connected in the clamping groove 253. Meanwhile, the cooperation between the clamping groove 253 and the clamping block 254 can also guide the movement of the clamping sleeve 231 to avoid the rotation of the clamping sleeve 231 in the axial direction during the movement. The limiting block 251 and the clamping block 254 are preferably two, and the two limiting blocks 251 and the two clamping blocks 254 are arranged in a staggered manner. Meanwhile, the inner wall of the clamping sleeve 231 is circular in cross section, and the connecting line between the two limiting blocks 251 on one cross section circle of the clamping sleeve 231 is a diameter line of the cross section circle, and the connecting line between the two clamping blocks 254 is also a diameter line of the cross section circle, and the two diameter lines are perpendicular to each other, so as to ensure the locking stability between the clamping sleeve 231 and the connecting shaft.
[0045] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.
Claims
1. An electrode tab stretching device, characterized by: The mounting frame is provided with a plurality of extension mechanisms along the length direction thereof; The extension mechanism comprises first mounting shafts and second mounting shafts arranged in parallel, and the first mounting shafts are arranged above the second mounting shafts in a lifting manner; The first mounting shafts are provided with a plurality of first extension assemblies arranged in an axial moving manner, and the second mounting shafts are provided with two second extension assemblies corresponding to each first extension assembly in a moving manner, and the first extension assembly is located between the two second extension assemblies corresponding thereto.
2. The pole piece extension device of claim 1, wherein: The mounting frame comprises a bottom plate and mounting plates arranged on both sides of the bottom plate, and the two ends of the first mounting shafts and the second mounting shafts are connected to the two mounting plates respectively.
3. The pole piece extension device of claim 2, wherein: The mounting plates are provided with a plurality of lifting assemblies along the length direction thereof, and two lifting assemblies corresponding to each other on the two mounting plates form a pair, and each pair of lifting assemblies corresponds to a first mounting shaft, and the two ends of the first mounting shaft are connected to one lifting assembly respectively.
4. The pole piece extension device of claim 3, wherein: The mounting plates are provided with sliding grooves extending along the height direction thereof; The lifting assembly comprises a sliding block slidingly connected to the sliding groove and a motor arranged at the top end of the sliding groove, and the output shaft of the motor is connected to the sliding block through a screw rod, and the inner side of the sliding block is provided with a mounting hole, and the end of the first mounting shaft is inserted into the mounting hole.
5. The pole piece extension device of claim 3, wherein: The inside of the mounting frame is provided with a sensor for detecting the position of the sheet to be extended, and the lifting assembly, the first extension assembly and the second extension assembly are electrically connected to the sensor.
6. The pole piece extension device of claim 5, wherein: The bottom plate is provided with a through hole corresponding to each second mounting shaft, and the sensor is arranged on both sides of the through hole.
7. The pole piece extension device of any one of claims 1-6, wherein: The first mounting shaft and the second mounting shaft have the same structure and are defined as mounting shafts, and the first extension assembly and the second extension assembly have the same structure and are defined as extension assemblies. The extension assembly comprises a clamping sleeve movably sleeved on the mounting shaft and locked by a locking mechanism.
8. The pole piece extension device of claim 7, wherein: The locking mechanism comprises a limiting block arranged at one end of the clamping sleeve and extending away from the clamping sleeve, and the limiting block is provided with a threaded hole, and a limiting bolt is threadedly connected in the threaded hole, and when the limiting bolt is rotated to abut against the mounting shaft, the clamping sleeve and the mounting shaft are relatively locked.
9. The pole piece extension device of claim 8, wherein: The locking mechanism further comprises a clamping block arranged on the inner wall of the clamping sleeve and a clamping groove arranged on the outer wall of the mounting shaft, and the clamping groove extends along the length direction of the mounting shaft, and the clamping block is slidingly connected in the clamping groove.
10. The pole piece extension device of claim 7, wherein: The extension assembly further comprises a hub motor sleeved on the outer wall of the clamping sleeve, and the hub motor is sleeved with a guide wheel, and the outer wall of the guide wheel is sleeved with a gasket.