Intelligent winding drum of battery pole piece

Abstract

The utility model relates to the technical field of battery processing equipment, in particular to an intelligent winding drum of a battery pole piece, which is characterized in that a pole piece pressing plate groove is formed in the outer surface of a winding drum main body along the axial direction; a telescopic device is arranged in the groove of the pole piece pressing plate; one end of the telescopic device is fixed at the bottom of the pole piece pressing plate groove, and the other end is provided with the pole piece pressing plate; and the telescopic device drives the pole piece pressing plate to move so as to realize opening and closing of the groove of the pole piece pressing plate. In order to solve the problem that in the prior art, due to the fact that a battery pole piece strip is fixed through mucilage glue, use is inconvenient, in the scheme, the telescopic pole piece pressing plate is arranged on the winding drum body, when the battery pole piece strip is fed, the pole piece pressing plate can be lifted, then one end of the battery pole piece strip is pressed between the pole piece pressing plate and the pole piece pressing plate groove, and the battery pole piece strip is fixed through the mucilage glue. Therefore, the effective fixation of the battery pole piece strip is realized; and when the discharging is finished, the pole piece pressing plate can be lifted to enable the battery pole piece strip to automatically fall off, so that the problem that an adhesive part is pulled is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing equipment, in particular to an intelligent reel for battery pole pieces. Background Art

[0002] Battery electrodes are a key component found in all types of batteries. They are essential for converting chemical energy into electrical energy. They consist of a positive electrode and a negative electrode, separated and connected by an electrolyte. The positive electrode is the plate where oxidation reactions occur in the battery, while the negative electrode is the plate where reduction reactions occur. The positive and negative electrodes, separated and connected by an electrolyte, form the battery's electrochemical reaction zone. During battery production, the electrodes are typically pre-prepared to produce strips, which are then cut according to production specifications before proceeding to subsequent processes. To achieve optimal productivity, the strips are typically wound after production.

[0003] In the prior art, there are devices for winding up battery pole pieces. For example, Chinese patent CN201922055875.2 discloses a winding reel for lithium battery pole pieces, comprising: a reel core, the outer peripheral wall of the reel core comprising a winding area and a non-winding area, and the lithium battery pole piece is suitable for being wound in the winding area; and an information storage label, the information storage label being provided on the reel core corresponding to the non-winding area. According to the reel for winding up lithium battery pole pieces of the embodiment of the present invention, since the reel core of the reel for winding up lithium battery pole pieces of the embodiment of the present invention is divided into a winding area and a non-winding area, the information storage label is located in the non-winding area of ​​the reel core, thereby preventing the information storage label from being covered by the pole piece being wound up by the reel, thereby affecting the use effect of the information storage label. Therefore, the information storage label can facilitate the electrode during the coating, cold pressing and slitting processes. External equipment can quickly view the electrode information through the information storage label, so as to meet the requirements of the coating, rolling and slitting equipment for winding reels towards automation, intelligence and informatization to improve production efficiency, reduce costs and improve product quality.

[0004] However, during actual implementation, the inventors discovered that this type of technical solution typically involves gluing one end of the battery electrode strip during loading, then attaching the glued portion to a roller, and then winding the roller to complete the loading process. This requires a design for a gluing process during the loading process, and at the end of the unloading process, the glued portion can cause the battery electrode strip to be pulled before it can be released, which can easily cause failures. Utility Model Content

[0005] In view of the above problems existing in the prior art, an intelligent reel for battery electrodes is now provided.

[0006] The specific technical solutions are as follows:

[0007] An intelligent reel for a battery electrode comprises a reel body;

[0008] The outer surface of the drum body is provided with a pole piece pressing plate groove along the axial direction;

[0009] A telescopic device is provided in the groove of the pole piece pressure plate;

[0010] One end of the telescopic device is fixed to the bottom of the electrode pressing plate groove, and the other end is installed with the electrode pressing plate;

[0011] The telescopic device drives the pole piece pressure plate to move, so as to realize the opening and closing of the pole piece pressure plate groove.

[0012] On the other hand, the reel body includes an inner cylinder and an outer cylinder which are fixedly sleeved together;

[0013] The inner tube is made of PTFE or Teflon;

[0014] The smart reel further includes a winding machine, and the winding machine includes an air shaft;

[0015] The inflatable shaft is provided with a plurality of expansion devices along the circumference, and the expansion devices are respectively connected to the air pump and expand or contract under the drive of the air pump;

[0016] The expansion device and the inner cylinder are fitted with each other to fix the reel body on the inflatable shaft.

[0017] On the other hand, the first end of the inner cylinder is provided with at least one inner cylinder positioning notch distributed along the circumference;

[0018] An outer cylinder positioning protrusion is provided on the outer cylinder at a position corresponding to the inner cylinder positioning notch;

[0019] The outer cylinder positioning protrusion is inserted into the inner cylinder positioning notch and abuts against it.

[0020] On the other hand, the pole piece pressure plate groove is provided on the outer cylinder;

[0021] An electrical interface is also provided at the bottom of the electrode plate groove, and the electrical interface passes through the outer cylinder and the inner cylinder to reach the inner surface of the inner cylinder;

[0022] An electrical plug is provided on the inflatable shaft at a position corresponding to the electrical interface;

[0023] The electrical interface is electrically connected to the telescopic device.

[0024] On the other hand, the telescopic device includes a first lifting cylinder, a first guide shaft, a second guide shaft and a second lifting cylinder arranged in sequence along the pole piece pressure plate groove.

[0025] On the other hand, an alignment mark is provided on the first end of the outer cylinder;

[0026] A positioning sensor is provided on the winding machine at a position corresponding to the positioning mark.

[0027] On the other hand, pole piece sensors are respectively provided on both sides of the pole piece pressure plate.

[0028] On the other hand, the outer cylinder is made of aluminum alloy.

[0029] On the other hand, the outer cylinder has hollows distributed in the front view direction.

[0030] On the other hand, the number of the inner cylinder positioning notches is two, which are arranged opposite to each other on the inner cylinder;

[0031] The pole piece pressing plate groove is located on the perpendicular midline of the line connecting the positioning notches of the inner cylinder.

[0032] The above technical solution has the following advantages or beneficial effects:

[0033] In order to solve the problem of inconvenience in using glue to fix battery electrode strips in the prior art, in this solution, a retractable electrode pressure plate is provided on the reel body. When the battery electrode strip is loaded, the electrode pressure plate can be raised and then one end of the battery electrode strip can be pressed between the electrode pressure plate and the electrode pressure plate groove, thereby achieving effective fixation of the battery electrode strip; when the discharge is completed, the electrode pressure plate can also be raised to make the battery electrode strip automatically fall off, avoiding the problem of pulling the glue part and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The embodiments of the present invention will be described more fully with reference to the accompanying drawings, which are for illustration and description only and are not intended to limit the scope of the present invention.

[0035] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0036] Figure 2 It is a front view of an embodiment of the utility model;

[0037] Figure 3 This is a schematic diagram of an alignment mark according to an embodiment of the present utility model;

[0038] Figure 4 Schematic diagram of the telescopic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0042] The utility model includes:

[0043] A smart reel for battery electrodes, such as Figure 1 、 2 As shown, it includes a reel body 1;

[0044] The outer surface of the reel body 1 is provided with a pole piece pressing plate groove 2 along the axial direction;

[0045] A telescopic device 3 is provided in the electrode pressing plate groove 2;

[0046] One end of the telescopic device 3 is fixed to the bottom of the electrode pressing plate groove 2, and the other end is installed with the electrode pressing plate 4;

[0047] The telescopic device 3 drives the pole piece pressing plate 4 to move, so as to realize the opening and closing of the pole piece pressing plate groove 2.

[0048] Specifically, in order to solve the problem of inconvenience in fixing the battery electrode strip by glue in the prior art, in this embodiment, a retractable electrode pressure plate 4 is provided on the reel body 1. When the battery electrode strip is loaded, the electrode pressure plate 4 can be raised and then one end of the battery electrode strip can be pressed between the electrode pressure plate 4 and the electrode pressure plate groove 2, thereby achieving effective fixation of the battery electrode strip; when the discharge is completed, the electrode pressure plate 4 can also be raised to make the battery electrode strip automatically fall off, avoiding the problem of pulling the glue part and improving production efficiency.

[0049] In practice, the intelligent reel comprises a reel body 1 for reeling in and out the battery electrode strip, and a winder for rotating the reel body 1. The reel body 1 is mounted on the winder's rotating shaft and is driven by the winder's rotating shaft to rotate in a specific direction and at a specific speed to reel in and out the battery electrode strip.

[0050] The pole piece pressure plate groove 2 is a trapezoidal cross-section groove opened on the outer surface of the winding drum body 1. A telescopic device 3 that can be retracted and extended in the radial direction is installed at the bottom of the groove. A pole piece pressure plate 4 is installed on the top of the telescopic device 3. The side of the pole piece pressure plate 4 coincides with the side of the pole piece pressure plate groove 2.

[0051] During the loading process, the telescopic device 3 pushes the electrode pressure plate 4 up, exposing the gap between the side of the electrode pressure plate 4 and the side of the electrode pressure plate groove 2, and then one end of the battery electrode strip is inserted into the gap, and the telescopic device 3 drives the electrode pressure plate 4 down, so that the side of the electrode pressure plate 4 and the side of the electrode pressure plate groove 2 clamp one end of the battery electrode strip, and then the winding machine drives the reel body 1 to rotate for winding.

[0052] During the unloading process, the winder drives the reel body 1 to rotate to unload the material. When the unloading is about to end, the telescopic device 3 pushes the electrode pressure plate 4 to rise, loosening the gap between the side of the electrode pressure plate 4 and the side of the electrode pressure plate groove 2 to allow the end of the battery electrode strip to naturally detach, thereby avoiding the pulling problem at the adhesive.

[0053] In one embodiment, the reel body 1 includes an inner cylinder 11 and an outer cylinder 12 which are fixedly sleeved together;

[0054] The inner tube 11 is made of steel or Teflon;

[0055] The intelligent reel also includes a winder, and the winder includes an air shaft;

[0056] The inflatable shaft is provided with a plurality of expansion devices along the circumference, and the expansion devices are respectively connected to the air pump and expand or contract under the drive of the air pump;

[0057] The expansion device and the inner cylinder 11 are fixed to the inflatable shaft through interference fit.

[0058] Specifically, in order to achieve a better processing process, in this embodiment, the reel body 1 is configured as a device that can be removed relative to the winding machine, and the rotating shaft of the winding machine is replaced by an inflatable shaft.

[0059] Specifically, an inflatable shaft is a rotating shaft with an expansion device. There are multiple inflatable expansion devices distributed along the circumference of the rotating shaft, usually air bags or other equivalent devices, which are connected to an air pump to inflate and deflate to change the volume.

[0060] When the reel body 1 needs to be loaded, the expansion device is deflated to reduce the diameter of the inflatable shaft. The reel body 1 is then placed on the inflatable shaft using a robotic arm or other device. The inflatable shaft is then inflated so that the expansion device and the inner cylinder 11 are in contact. Because the inner cylinder 11 is made of an elastic material such as steel or Teflon, which has a certain degree of ductility, continuous inflation creates an interference fit between the expansion device and the inner cylinder 11, achieving a good fixation effect and realizing friction transmission.

[0061] Accordingly, when the reel body 1 needs to be unloaded, the expansion device is deflated to reduce the diameter of the inflatable shaft, and then the reel body 1 is removed from the inflatable shaft by a device such as a robotic arm.

[0062] Based on the above arrangement, the reel body 1 can be replaced as needed during the production process. For example, after the battery electrode strip is wound at the winding station, the reel body 1 is unloaded and moved to the unwinding station.

[0063] Accordingly, in order to achieve better support for the battery electrode strips, the outer cylinder 12 is configured to be a metal material, such as aluminum alloy, to avoid the shrinkage of the outer cylinder 12 during winding, which may cause gaps between the battery electrode strips and uneven winding.

[0064] In one embodiment, at least one inner cylinder positioning notch 13 is distributed along the circumference of the first end of the inner cylinder 11;

[0065] An outer cylinder positioning protrusion 14 is provided on the outer cylinder 12 at a position corresponding to the inner cylinder positioning notch 13;

[0066] The outer cylinder positioning protrusion 14 is inserted into the inner cylinder positioning notch 13 and abuts against it.

[0067] Specifically, to prevent relative rotation between the outer cylinder 12 and inner cylinder 11, which are made of different materials, during winding, in this embodiment, matching outer cylinder positioning projections 14 and inner cylinder positioning notches 13 are machined on the sides of the outer cylinder 12 and inner cylinder 11 near the winding machine. The inner cylinder positioning notch 13 is a U-shaped groove axially cut on the end of the inner cylinder 11 near the winding machine, while the outer cylinder positioning projections 14 are corresponding U-shaped projections machined on the outer cylinder 12. When the outer cylinder 12 and inner cylinder 11 are assembled, the outer cylinder positioning projections 14 insert into and abut against the inner cylinder positioning notches 13, enabling synchronous rotation of the outer cylinder 12 and inner cylinder 11 during winding.

[0068] Furthermore, in order to achieve a lower moment of inertia, in one embodiment, the outer cylinder 12 is hollowed out in the front view direction to reduce the weight of the outer cylinder 11 .

[0069] And, in order to achieve a better fixing effect, the number of the inner cylinder positioning notches 13 is two, which are arranged oppositely on the inner cylinder 11;

[0070] Correspondingly, there are two outer cylinder positioning protrusions 14 , which are arranged opposite to each other on the outer cylinder 12 .

[0071] The pole piece pressure plate groove 2 is located on the perpendicular midline of the line connecting the inner cylinder positioning notches 13. The above design enables a relatively consistent rotation torque in the clockwise and counterclockwise directions to be achieved during winding.

[0072] In one embodiment, the pole piece pressure plate groove 2 is provided on the outer cylinder 12;

[0073] An electrical interface 5 is also provided at the bottom of the electrode plate groove 2, and the electrical interface 5 passes through the outer cylinder 12 and the inner cylinder 11 to reach the inner surface of the inner cylinder 11;

[0074] An electrical plug is provided on the inflatable shaft at a position corresponding to the electrical interface;

[0075] The electrical interface 5 is electrically connected to the telescopic device 3 .

[0076] Specifically, after the reel body 1 is set as a movable structure, in order to achieve a better driving effect, in this embodiment, a corresponding electrical interface 5 is also provided on the reel body 1. The part of the electrical interface 5 in the electrode pressure plate groove 2 is connected to the telescopic device 3 through a cable to send the driving voltage and control signal. The electrical interface 5 also extends radially into the reel body 1, passes through the outer cylinder 12 and the inner cylinder 11 to reach the inner surface of the inner cylinder 11.

[0077] Correspondingly, an electrical plug is provided on the pneumatic shaft at a position corresponding to the electrical interface. The electrical plug is a contact type or a pin header with a spring, which can pop out and engage with the electrical interface 5 to transmit the driving voltage and control signal when the reel body 1 is installed in place.

[0078] In one embodiment, Figure 3 As shown, the telescopic device 3 includes a first lifting cylinder 31, a first guide shaft 32, a second guide shaft 33 and a second lifting cylinder 34 arranged in sequence along the pole piece pressure plate groove 2, and the electrical interface 5 is located between the first guide shaft 32 and the second guide shaft 33.

[0079] Specifically, to achieve a better lifting effect, in this embodiment, the telescopic device 3 is provided with a first lifting cylinder 31, a first guide shaft 32, a second guide shaft 33, and a second lifting cylinder 34. The first and second guide shafts 32, 33, located in the middle, are sleeve structures, including an outer sleeve mounted in the electrode plate groove 2 and a guide rod mounted on the electrode plate 3. The provision of the telescopic device 3 above achieves better and more uniform lifting.

[0080] In one embodiment, Figure 4 As shown, an alignment mark 121 is provided on the first end of the outer cylinder 12;

[0081] An alignment sensor is provided on the winding machine at a position corresponding to the alignment mark.

[0082] Specifically, after installing the electrical interface 5, in this embodiment, an alignment mark 121 is provided on the first end of the outer cylinder 12 to ensure greater installation accuracy. A position corresponding to the alignment mark is provided on the winding machine with an alignment sensor, such as a combination of a magnetic sheet and a magnetic sensor, or a combination of a reflective sticker and an infrared sensor. The sensor detects the alignment mark to determine whether the reel body 1 is correctly oriented during installation. If not, the reel body 1 is rotated into position before the inflatable shaft is controlled to secure it.

[0083] In one embodiment, Figure 1 As shown, pole piece sensors 6 are respectively provided on both sides of the pole piece pressure plate 4 .

[0084] Specifically, to achieve better control of the loading and unloading process, in this embodiment, pole piece sensors 6 are also provided on both sides of the pole piece pressure plate 4, and are connected to the winding machine through an electrical interface 5. Specifically, the surface of the battery pole piece strip has been processed to obtain the corresponding positive or negative pole, which has a certain conductivity. The pole piece sensor 6 can detect whether there is a bonded battery pole piece strip on both sides of the pole piece pressure plate 3. During unloading, when the pole piece sensor 6 cannot detect the conductor, it indicates that the unloading is about to end and the pole piece pressure plate 4 needs to be lifted. At this time, the telescopic device 3 can be controlled by a signal.

[0085] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A smart reel for battery pole pieces, characterized in that: including a reel body; The outer surface of the drum body is provided with a pole piece pressing plate groove along the axial direction; A telescopic device is provided in the groove of the pole piece pressure plate; One end of the telescopic device is fixed to the bottom of the electrode pressing plate groove, and the other end is installed with the electrode pressing plate; The telescopic device drives the pole piece pressure plate to move, so as to realize the opening and closing of the pole piece pressure plate groove.

2. The smart reel according to claim 1, characterized in that: The reel body comprises an inner cylinder and an outer cylinder which are sleeved and fixed; The inner cylinder is made of elastic material; The smart reel further includes a winding machine, and the winding machine includes an air shaft; The inflatable shaft is provided with a plurality of expansion devices along the circumference, and the expansion devices are respectively connected to the air pump and expand or contract under the drive of the air pump; The expansion device and the inner cylinder are fitted with each other to fix the reel body on the inflatable shaft.

3. The smart reel according to claim 2, characterized in that: The first end of the inner cylinder is provided with at least one inner cylinder positioning notch distributed along the circumference; An outer cylinder positioning protrusion is provided on the outer cylinder at a position corresponding to the inner cylinder positioning notch; The outer cylinder positioning protrusion is inserted into the inner cylinder positioning notch and abuts against it.

4. The smart reel according to claim 2, characterized in that: The electrode pressing plate groove is provided on the outer cylinder; An electrical interface is also provided at the bottom of the electrode plate groove, and the electrical interface passes through the outer cylinder and the inner cylinder to reach the inner surface of the inner cylinder; An electrical plug is provided on the inflatable shaft at a position corresponding to the electrical interface; The electrical interface is electrically connected to the telescopic device.

5. The smart reel according to claim 1, characterized in that: The telescopic device includes a first lifting cylinder, a first guide shaft, a second guide shaft and a second lifting cylinder which are sequentially arranged along the pole piece pressure plate groove.

6. The smart reel according to claim 2, characterized in that: A positioning mark is provided on the first end of the outer cylinder; A positioning sensor is provided on the winding machine at a position corresponding to the positioning mark.

7. The smart reel according to claim 1, characterized in that: Pole sensors are respectively provided on both sides of the pole piece pressure plate.

8. The smart reel according to claim 2, wherein: The elastic material is Teflon or Saigang; And / or, the outer cylinder is made of aluminum alloy.

9. The smart reel according to claim 2, characterized in that: The outer cylinder has hollows distributed in the front view direction.

10. The smart reel according to claim 2, wherein: There are two positioning notches in the inner cylinder, which are arranged opposite to each other on the inner cylinder; The pole piece pressing plate groove is located on the perpendicular midline of the line connecting the positioning notches of the inner cylinder.

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