Membrane belt path of passing roller and battery cell lamination machine

Abstract

The utility model relates to the technical field of cutting and laminating equipment, and discloses a passing roller and a diaphragm belt path of a battery core laminating machine, and the passing roller comprises a shaft core, a roller, a bearing piece and a bearing, the bearings sleeve the two ends of the shaft core; the bearing piece is arranged on the bearing; the two ends of the roller are arranged at the ends, away from the bearings, of the two bearing pieces respectively and arranged between the two bearing pieces so that the roller can drive the two bearing pieces to rotate around the shaft core when rotating. The roller cylinder of the passing roller is connected with the bearing through the bearing piece, so that the diameter of the roller cylinder is not limited by the diameter of the bearing, the situation that the diameter of the roller cylinder is too large due to the fact that the diameters of the bearing and the shaft core are large is effectively prevented, the weight of the roller cylinder is reduced, and inertia of the roller cylinder during reversing is effectively reduced; the problem that the diaphragm is wrinkled and uneven due to the fact that the roller cannot be stopped in time is solved, the quality of a battery cell is guaranteed, and the roller can be applied to a diaphragm belt path with a higher belt running speed due to the lighter roller.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting and stacking equipment, and particularly relates to a roller and a diaphragm belt of a battery core stacking machine. Background Art

[0002] When stacking lithium batteries, the cell separator can be stacked in a Z-shaped unwinding method to separate the negative and positive electrodes of the cell. The main process is that the separator is actively unwound, and is introduced into the main stacking table through the transition roller and the tension mechanism. The main stacking table drives the separator to move back and forth, folding it in a Z shape and placing the cut positive and negative electrodes. After stacking the set number of sheets, the stacking is stopped, the separator cutting is completed, and the glue is applied.

[0003] The traditional roller structure usually includes a shaft core, a bearing and a roller, wherein the roller is mounted on the shaft core through a bearing sleeve, that is, the outer ring of the bearing is connected to the inner surface of the roller, and the inner ring of the bearing is connected to the outer surface of the shaft core, so that the roller can rotate on the shaft core through the bearing. In the process of introducing the diaphragm into the main stacking table, multiple rollers are required to work. Usually, the diameter of the roller is determined by the specifications of the shaft core and the bearing due to the limitations of the above structure. The larger the diameter of the roller, the heavier the weight, resulting in a greater inertia during reversing, making it difficult for the roller to stop, which will cause the diaphragm to wrinkle, thereby affecting the quality of the battery cell.

[0004] Therefore, the existing roller is difficult to be applied to the diaphragm belt with a higher belt running speed, resulting in the speed of the diaphragm belt being limited. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a roller and a diaphragm belt path of a battery cell stacking machine.

[0006] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0007] In a first aspect, the utility model provides a roller, comprising: a shaft core, a roller, a receiving member and a bearing;

[0008] The bearing sleeves are arranged on both ends of the shaft core;

[0009] The receiving member is provided on the bearing;

[0010] The two ends of the roller are respectively arranged on one end of the two receiving members away from the bearing, and are arranged between the two receiving members, so that when the roller rotates, the two receiving members are driven to rotate around the shaft core.

[0011] In some embodiments, the roller is provided with a mounting structure for cooperating with and mounting the receiving member.

[0012] In some embodiments, a cross-sectional area of ​​an end of the receiving member close to the bearing is larger than a cross-sectional area of ​​an end of the receiving member away from the bearing.

[0013] In some embodiments, the roller is a carbon fiber roller.

[0014] In a second aspect, the present invention provides a diaphragm belt path of a battery cell stacking machine, comprising a plurality of rollers as described in any of the above embodiments.

[0015] In some embodiments, the distance between every two adjacent rollers is ≤250 mm.

[0016] In some embodiments, the total length of the belt path conveyed by the plurality of rollers is ≤1700 mm.

[0017] In some embodiments, the number of the rollers is set to no more than eight.

[0018] In some embodiments, the number of the rollers is set to eight, and the eight rollers are respectively arranged along the conveying direction of the diaphragm as: two upper rollers, a tension sensor roller, a tension swing roller, an auxiliary traction roller, a cache motor roller and two lower rollers.

[0019] In some embodiments, a DD motor is provided on the diaphragm belt path, and an output end of the DD motor is connected to the tension swing roller through a connecting rod to drive the tension swing roller to swing around the DD motor.

[0020] In summary, the present invention has at least the following advantages:

[0021] The utility model provides a roller, the roller of which is connected to the bearing through a receiving part, so that the diameter of the roller is not limited by the diameter of the bearing, effectively preventing the roller diameter from being too large due to the large diameter of the bearing and the shaft core, thereby reducing the weight of the roller, and further effectively reducing the inertia of the roller during reversing, avoiding the problem of wrinkling and unevenness of the diaphragm caused by the roller being unable to stop in time, ensuring the quality of the battery cell, and the lighter roller also enables the roller to be used on diaphragm belts with higher belt speeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic cross-sectional structural diagram of a roller according to an embodiment of the present application;

[0023] Figure 2 for Figure 1 A local enlarged schematic diagram of point A;

[0024] Figure 3 Schematic diagram of the top view of the diaphragm belt path of the battery cell stacking machine according to an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the three-dimensional structure of the diaphragm belt path of the battery cell stacking machine according to an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of the main structure of the diaphragm belt of the battery cell stacking machine according to an embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the partial structure of the diaphragm belt path of the battery cell stacking machine according to an embodiment of the present application.

[0028] Markings in the figure:

[0029] 10. Diaphragm belt of the battery cell stacking machine; 100. Roller; 110. Shaft core; 120. Roller; 130. Receiver; 140. Bearing; 150. Limiter; 200. Base; 300. Upper roller; 400. Tension sensor roller; 500. Tension swing roller; 510. DD motor; 600. Auxiliary traction roller; 700. Cache motor roller; 800. Lower roller. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] In the following embodiments, reference is made to Figure 4 The coordinate system is such that the direction indicated by the X-axis arrow is right, the direction indicated by the Y-axis arrow is forward, and the direction indicated by the Z-axis arrow is up.

[0033] Example 1:

[0034] like Figure 1 and Figure 2 As shown, a roller 100 is provided, including: an axis core 110, a roller 120, a receiving member 130 and a bearing 140; the bearing 140 is sleeved on both ends of the axis core 110; the receiving member 130 is arranged on the bearing 140; the two ends of the roller 120 are respectively arranged on one end of the two receiving members 130 away from the bearing 140, and are arranged between the two receiving members 130, so that when the roller 120 rotates, the two receiving members 130 are driven to rotate around the axis core 110.

[0035] Specifically, the roller 120 is sleeved on the shaft core 110, and the two ends of the shaft core 110 protrude from the two ends of the roller 120. The inner end of each receiving member 130 is connected to one end of the roller 120, and the outer end of each receiving member 130 is connected to the outer ring of a bearing 140. The inner surface of the roller 120 and the inner surface of the receiving member 130 are both spaced apart from the outer surface of the shaft core 110. The inner ring of the bearing 140 is connected to the outer surface of the shaft core 110, so that when the roller 120 rotates, the two receiving members 130 are driven to rotate around the shaft core 110. In this way, the diameter of the roller 120 can be controlled within a range of less than or equal to 20 mm, thereby reducing the weight of the roller 100. During installation: the roller 120 is sleeved on the shaft core 110, and the two sockets 130 are sleeved on the shaft core 110 and respectively connected to the two ends of the roller 120, and then the two bearings 140 are sleeved on the two ends of the shaft core 110 to connect with the sockets 130 at the corresponding ends, so that the two bearings 140 can work on the outside of the roller 120, that is, both ends of the roller 120 can be rotatably connected to the shaft core 110 through the corresponding sockets 130.

[0036] It is worth noting that the roller 120 of the over-roller 100 is connected to the bearing 140 through the receiving part 130, so that the diameter of the roller 120 is not limited by the diameter of the bearing 140, effectively preventing the diameter of the roller 120 from being too large due to the larger diameters of the bearing 140 and the shaft core 110, thereby reducing the weight of the roller 120, and then effectively reducing the inertia of the roller 120 during reversing, avoiding the problem of wrinkling and unevenness of the diaphragm caused by the failure of the roller 120 to stop in time, ensuring the quality of the battery cell, and the lighter roller 120 also enables the over-roller 100 to be used on diaphragm belts with higher belt speeds.

[0037] Example 2

[0038] This embodiment is a further implementation of the embodiment 1. In this embodiment, the roller 120 is provided with an installation structure for cooperating with the installation receiving member 130 .

[0039] Specifically, the receiving member 130 and the roller 120 can be firmly connected through the connecting function of the mounting structure.

[0040] To facilitate the use of the mounting structure, such as Figure 2 As shown, in some embodiments, the mounting structure may be selected from but not limited to a mounting groove, and may also be configured as a screw connection, etc., and it is only necessary to ensure a stable connection between the receiving member 130 and the roller 120.

[0041] Specifically, mounting grooves are provided on both end faces of the roller 120 along the axial direction, and two receiving parts 130 are sleeved on both ends of the shaft core 110, and the inner end of each receiving part 130 is adapted to a mounting groove and is fixed in the corresponding mounting groove by screw connection or the like. The outer end of each receiving part 130 protrudes from the corresponding mounting groove to be connected to the corresponding bearing 140.

[0042] In order to facilitate the matching installation of the receiving member 130 and the bearing 140, as shown in FIG. Figure 2 As shown, in some embodiments, the cross-sectional area of ​​the end of the socket 130 close to the bearing 140 is larger than the cross-sectional area of ​​the end of the socket 130 away from the bearing 140 .

[0043] Specifically, the cross-sectional area of ​​the outer end of the receiving member 130 is larger than that of the inner end, so that the outer end of the receiving member 130 can be installed with a large-diameter bearing 140. A positioning groove is formed on the outer end surface of each receiving member 130, and the positioning groove is adapted to the outer ring of the bearing 140. In this way, when each bearing 140 is mounted on one end of the shaft core 110, each bearing 140 is installed in a positioning groove.

[0044] It is understandable that the cross-sectional areas at both ends of the supporting member 130 may also be set to other relationships, and it is only necessary to ensure that they are fixedly connected to the outer ring of the bearing 140. For example, if the sizes of the two ends of the supporting member 130 are set to be the same, its outer end may be fixedly connected to the outer ring of the bearing 140 by other means such as a locking member.

[0045] In order to further reduce the weight of the roller 100 , in some embodiments, the roller 120 is configured as a carbon fiber roller 120 .

[0046] Specifically, the carbon fiber roller 120 is light in weight, which can further reduce the overall weight of the roller 100, thereby further ensuring the quality of the battery cell.

[0047] In order to facilitate the use of the receiving member 130, as Figure 2 As shown, in some embodiments, the receiving member 130 is configured as a metal ring.

[0048] Specifically, by setting the receiving member 130 to be ring-shaped, that is, both the inner end and the outer end are set to be ring-shaped, the installation and use of the receiving member 130 are facilitated. It can be understood that the receiving ring can be selected but not limited to an aluminum ring.

[0049] To facilitate the installation and positioning of the bearing 140 , in some embodiments, both ends of the shaft core 110 are sleeved with limiting members 150 for abutting and limiting the outward movement tendency of the bearing 140 .

[0050] Specifically, each limiting member 150 abuts against the outer end surface of a bearing 140 , so that the two limiting members 150 abut against the inner rings of the two bearings 140 from the outside, thereby limiting the two bearings 140 on the shaft core 110 .

[0051] Among them, in the above embodiments, reference Figure 1 The dotted line at the center of the shaft core 110 is the midline, and the end of each component close to the midline of the shaft core 110 is set as the inner end, and the end away from the midline of the shaft core 110 is set as the outer end.

[0052] Example 3

[0053] It is understandable that the spacing between the current diaphragm rollers varies in size and is relatively large, generally greater than 300mm. As the distance between the rollers is large, the total length of the belt will become longer, resulting in a slower response speed and more obvious tension fluctuations. Usually, the tension fluctuations are around 5%.

[0054] In order to improve the response speed and reduce the tension fluctuation, a diaphragm belt 10 of a battery cell stacking machine is provided, comprising a plurality of rollers 100 as in Example 1 or 2, wherein the distance between each two adjacent rollers 100 is ≤300 mm.

[0055] Specifically, by reducing the distance between the rollers 100, the total length of the diaphragm during operation is reduced, which in turn reduces the diaphragm's overall inertia and improves its response speed. Furthermore, vibration during diaphragm movement is reduced, resulting in tension fluctuations of less than 5%. Furthermore, the reduced total diaphragm length shortens the distance between unwinding and lamination, reducing the exposed length of the diaphragm and reducing dust generated by friction.

[0056] In order to make the tension fluctuation milder, in some embodiments, the distance between every two adjacent rollers 100 is ≤ 250 mm.

[0057] At the same time, reducing the distance between the rollers 100 increases the compactness of the equipment, further improves the response speed of the diaphragm belt system, further reduces the vibration during diaphragm movement, and further reduces tension fluctuations, which are reduced to approximately 3%. For example, the distance between each pair of rollers 100 is 250mm; for another example, the distance between each pair of rollers 100 is 240mm; and for another example, the distance between each pair of rollers 100 is 230mm. It is understood that the specific distance setting between adjacent rollers 100 can be adjusted in combination with the equipment's belt distribution, and this application does not limit this.

[0058] In order to further ensure the range of tension fluctuation, in some embodiments, the total length of the belt path conveyed by the multiple rollers 100 is ≤1700 mm.

[0059] Specifically, by controlling the total length of the belt, the response speed and tension fluctuation of the diaphragm belt system can be better controlled. For example, the total length of the belt conveyed by multiple rollers 100 is 1700 mm; for another example, the total length of the belt conveyed by multiple rollers 100 is 1650 mm; for another example, the total length of the belt conveyed by multiple rollers 100 is 1600 mm. It can be understood that the specific length of the belt can be adjusted in combination with the belt distribution of the equipment, and this application does not limit this. A shorter diaphragm belt can improve the system response speed of the diaphragm belt and reduce the tension fluctuation of the diaphragm belt, thereby improving the belt running speed of the diaphragm belt.

[0060] Example 4

[0061] It is understandable that the number of diaphragm rollers that an existing actively unwinding diaphragm needs to pass through is greater than 8, and generally the number is 10 or more. In the entire diaphragm unwinding system, when the diaphragm system is started, the entire belt needs to drive all the rollers first, and then accelerate the rollers to a speed that matches other components. The more rollers there are, the greater the driving force required to start, and the greater the burden on the entire system; and the more rollers there are, the slower the response time of the system.

[0062] This embodiment is a further implementation of embodiment 3. In order to reduce the driving force required by the system and improve the response speed of the system, Figures 3 to 6 As shown, in this embodiment, the number of the rollers 100 is set to no more than eight.

[0063] In this way, a diaphragm only needs to flow through eight rollers 100 at most when flowing out, and the fewer the number of rollers 100, the smaller the driving force required to drive the belt to the maximum speed will be, and the fewer the number of rollers 100, the faster the diaphragm system responds.

[0064] In order to facilitate the delivery of the diaphragm, such as Figures 3 to 6 As shown, in some embodiments, the number of rollers 100 is set to eight, and the eight rollers 100 are respectively arranged along the conveying direction of the diaphragm as: two upper rollers 300, a tension sensor roller 400, a tension swing roller 500, an auxiliary traction roller 600, a cache motor roller 700 and two lower rollers 800.

[0065] Specifically, refer to Figure 5 and Figure 6The diaphragm belt 10 of the battery cell stacking machine also includes a base 200, and two upper rollers 300, a tension sensor roller 400, a tension swing roller 500, an auxiliary traction roller 600, a buffer motor roller 700, and two lower rollers 800 are sequentially arranged on the base 200 along the conveying direction of the diaphragm. The two upper rollers 300, the tension sensor roller 400, the tension swing roller 500, and the auxiliary traction roller 600 are arranged in sequence from top to bottom, and the two upper rollers 300 and the tension swing roller 500 are arranged on the left, the tension sensor roller 400 and the auxiliary traction roller 600 are arranged on the right, the buffer motor roller 700 is arranged on the upper right side of the tension swing roller 500 and the auxiliary traction roller 600, and the two lower rollers 800 are arranged below the buffer motor roller 700. An actively unwound diaphragm is first introduced through two upper rollers 300, then passes through the tension sensor roller 400 to detect the tension, and then flows through the tension swing roller 500 to adjust the diaphragm tension. After the tension adjustment is completed, it reaches the auxiliary traction roller 600, and the diaphragm is introduced into the cache motor roller 700 for steering, and finally output through two lower rollers 800.

[0066] In order to facilitate the use of the tension swing roller 500, as Figure 4 and Figure 5 As shown, in some embodiments, a DD motor 510 is provided on the diaphragm belt path, and the output end of the DD motor 510 is connected to the tension swing roller 500 through a connecting rod to drive the tension swing roller 500 to swing around the DD motor 510.

[0067] Specifically, the DD motor 510 is arranged in parallel with the tension sensor roller 400, and the output end of the DD motor 510 is vertically mounted on the base 200 and connected to two connecting rods via two rotating rings. The output end of the DD motor 510 and the two connecting rods are arranged perpendicular to each other, that is, the two connecting rods are arranged in parallel front and back, and the two connecting rods are connected to the ends of the tension swing roller 500, so that the tension swing roller 500 and the output end of the DD motor 510 are arranged parallel to each other. In this way, the tension swing roller 500 is normally located directly below the DD motor 510 through the connection of the connecting rods. When the DD motor 510 rotates, the rotating ring drives the two connecting rods to rotate, thereby driving the tension swing roller 500 to rotate around the DD motor 510. That is, the tension swing roller 500, driven by the DD motor 510, swings left and right with the position of the DD motor 510 as the center of the circle, thereby adjusting the diaphragm tension between the tension sensor roller 400 and the tension swing roller 500.

[0068] In order to facilitate the use of the auxiliary traction roller 600 , in some embodiments, a traction drive is provided on the base 200 , and an output end of the traction drive is connected to the auxiliary traction roller 600 .

[0069] Specifically, the pole piece can be continuously transported by the driving action of the traction drive, and the diaphragm can be controlled to move in a predetermined direction and speed by adjusting the parameters of the traction drive. Of course, the specific parameters of the traction drive can be adjusted according to the actual conditions of the equipment. Those skilled in the art can determine different parameters based on the equipment's operation and experience without affecting the implementation of the above-mentioned embodiment, and this application does not limit this.

[0070] It is understandable that the working modes of the remaining rollers are known to those skilled in the art and are achievable, and are not described in detail in this embodiment.

[0071] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0072] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0073] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0074] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above contents. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. A roller, characterized in that: include: A shaft core (110), a roller (120), a receiving member (130) and a bearing (140); The bearings (140) are sleeved on both ends of the shaft core (110); The receiving member (130) is arranged on the bearing (140); The two ends of the roller (120) are respectively arranged on one end of the two receiving members (130) away from the bearing (140), and are arranged between the two receiving members (130), so that when the roller (120) rotates, the two receiving members (130) are driven to rotate around the shaft core (110).

2. The roller according to claim 1, characterized in that: The roller (120) is provided with a mounting structure for cooperating with and mounting the receiving member (130).

3. The roller according to claim 1, characterized in that: The cross-sectional area of ​​one end of the receiving member (130) close to the bearing (140) is larger than the cross-sectional area of ​​one end of the receiving member (130) away from the bearing (140).

4. The roller according to any one of claims 1 to 3, characterized in that: The roller (120) is configured as a carbon fiber roller (120).

5. A diaphragm belt for a battery cell stacking machine, characterized in that: The utility model comprises a plurality of rollers (100) according to any one of claims 1 to 4.

6. The diaphragm belt of the battery cell stacking machine according to claim 5, characterized in that: The distance between any two adjacent rollers (100) is ≤250 mm.

7. The diaphragm belt of the battery cell stacking machine according to claim 5, characterized in that: The total length of the belt conveyed by the plurality of rollers (100) is ≤1700 mm.

8. The diaphragm belt of the battery cell stacking machine according to claim 5, characterized in that: The number of the rollers (100) is set to be no more than eight.

9. The diaphragm belt of the battery cell stacking machine according to claim 5, characterized in that: The number of the rollers (100) is set to eight, and the eight rollers (100) are respectively arranged in sequence along the conveying direction of the diaphragm as: two upper rollers (300), a tension sensor roller (400), a tension swing roller (500), an auxiliary traction roller (600), a cache motor roller (700) and two lower rollers (800).

10. The diaphragm belt of the battery cell stacking machine according to claim 9, characterized in that: A DD motor (510) is provided on the diaphragm belt path, and an output end of the DD motor (510) is connected to the tension swing roller (500) via a connecting rod to drive the tension swing roller (500) to swing around the DD motor (510).

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