Battery pole piece unwinding device
By introducing a support arm and a synchronous linkage into the unwinding mechanism, combined with a guide rail mechanism and a drive motor, the problem of insufficient stability in the unwinding mechanism of the cantilever shaft machine is solved, achieving higher load-bearing capacity and unwinding accuracy.
Patent Information
- Application Number
- CN202520058177.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-09
AI Technical Summary
In the existing technology, when using a guide device, the unwinding mechanism of a cantilever shaft machine has insufficient stability of the support structure, which limits the load-bearing capacity of the unwinding shaft.
By adding support arms and synchronous linkages, combined with guide rail mechanisms and drive motors, the unwinding shaft and support arms can be adjusted synchronously, ensuring that the unwinding shaft always remains in the accurate position, thereby improving stability and load-bearing capacity.
It improves the working stability and load-bearing capacity of the unwinding shaft, ensuring the accuracy and safety of the electrode sheets during the unwinding process.
Smart Images
Figure CN223619863U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of battery cell electrode production, specifically relating to a battery electrode unwinding device. Background Technology
[0002] In battery manufacturing, the production of electrodes is a crucial step. Electrodes are the core components of a battery used to store electrical energy, and they are composed of key materials such as active materials, conductive agents, binders, and current collectors. To ensure battery performance and safety, electrodes must be precisely cut into the required shapes and sizes, and then formed into battery cells through stacking or winding processes.
[0003] To improve the efficiency and accuracy of electrode slitting and stacking processes, the electrodes are typically placed on an unwinding mechanism for support and winding. This unwinding mechanism not only increases production efficiency but also ensures the quality and safety of the battery electrode products.
[0004] In existing technologies, the unwinding mechanism incorporates a guide rail to adjust the unwinding position of the unwinding shaft while supporting and unwinding the electrode sheets, ensuring the electrode sheets remain in the correct unwinding position. However, for cantilever shaft unwinding mechanisms, one side lacks a fixed support arm, allowing only unilateral support of the unwinding shaft. Furthermore, the guide rail causes frequent movement of the unwinding shaft during operation, resulting in insufficient stability of the unwinding shaft's support structure and limiting its ability to support heavier electrode sheets.
[0005] Therefore, the existing technology lacks an unwinding mechanism that provides higher stability and stronger load-bearing capacity when using a web guide for cantilever shaft machines. Utility Model Content
[0006] To address the shortcomings of the prior art, this utility model provides a battery electrode unwinding device. By adding a support arm to support the unwinding shaft, and by using a synchronous linkage and guide rails to keep the unwinding shaft and the support arm synchronized when the correction mechanism adjusts the position of the unwinding shaft, the stability and load-bearing capacity of the unwinding shaft are improved.
[0007] The technical effects to be achieved by this utility model are realized through the following technical aspects:
[0008] This utility model provides a battery electrode unwinding device, which includes at least a fixed base, a correction mechanism, a first drive motor, an unwinding shaft, a support arm, a first guide rail mechanism for adjusting the position by moving the unwinding shaft, a second guide rail mechanism for moving the support arm on a horizontal coordinate axis, and a synchronizing link for synchronizing the movement of the unwinding shaft and the support arm.
[0009] The first guide rail mechanism and the first drive motor are both mounted on the fixed base; a connector is provided on one side of the unwinding shaft; the connector is movably mounted on the first guide rail mechanism; the first drive motor is driven connected to the unwinding shaft through the connector; one end of the correction mechanism is driven connected to the connector, and the other end is mounted on the fixed base; the support arm is movably mounted on the second guide rail mechanism, and its upper end supports the other side of the unwinding shaft; the synchronous connecting rod is connected between the connector and the second guide rail mechanism.
[0010] In some embodiments, the second guide rail mechanism is provided with an x-axis guide rail, and the sliding direction of the x-axis guide rail is the same as the sliding direction of the first guide rail mechanism.
[0011] In some embodiments, the second guide rail mechanism is further provided with a y-axis guide rail and a second drive motor. The y-axis guide rail is movably disposed on the x-axis guide rail. The support arm is movably disposed on the y-axis guide rail. The second drive motor is drivenly connected to the support arm. The synchronous connecting rod is connected between the connecting member and the y-axis guide rail.
[0012] In some embodiments, a third guide rail mechanism is further included for supporting and transmitting the synchronous link. The synchronous link is movably disposed on the third guide rail mechanism, with one end connected to the connector and the other end connected to the second guide rail mechanism. The sliding direction of the third guide rail mechanism is the same as the sliding direction of the first guide rail mechanism.
[0013] In some embodiments, the unwinding shaft is provided with an inflation mechanism, which is arranged around the shaft body of the unwinding shaft.
[0014] In some embodiments, the support arm is provided with a limiting groove for engaging with the side end of the unwinding shaft.
[0015] In some embodiments, the limiting groove is configured as a semi-circular groove that matches the side end shaft of the unwinding shaft.
[0016] In some embodiments, the support arm is further provided with a locking member for tightly fitting the unwinding shaft to the support arm, the locking member being disposed on the limiting groove.
[0017] In some embodiments, the locking member is provided with a limiting rod and a first cylinder for driving the limiting rod to extend or retract, the limiting rod being disposed at the opening of the limiting groove; the first cylinder being connected to the limiting rod.
[0018] In some embodiments, the correction mechanism is equipped with a sensor for monitoring the position of the unwinding shaft.
[0019] In summary, this utility model has at least the following advantages:
[0020] The battery electrode unwinding device provided by this utility model uses a correction mechanism and a first guide rail mechanism to adjust the position of the unwinding shaft, ensuring that the electrode remains in an accurate working position. Simultaneously, a synchronous linkage and a second guide rail mechanism synchronize the adjustment of the unwinding shaft and the support arm, ensuring that the support arm can always support the unwinding shaft, thereby improving the stability and load-bearing capacity of the unwinding shaft. This utility model exhibits higher stability and stronger load-bearing capacity. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of a battery electrode unwinding device loaded with electrode roll material according to an embodiment of the present invention;
[0022] Figure 2 This is a schematic diagram of the structure of the battery electrode unwinding device according to an embodiment of the present invention;
[0023] Figure 3 This is a schematic diagram of the structure of the battery electrode unwinding device in the feeding state according to an embodiment of the present invention.
[0024] Marked in the image:
[0025] 10. Fixture;
[0026] 20. Corrective action agency;
[0027] 30. First drive motor;
[0028] 40. Unwinding spool; 41. Connecting component; 42. Inflation mechanism;
[0029] 50. Support arm; 51. Limiting groove; 52. Locking component;
[0030] 60. First guide rail mechanism;
[0031] 70. Second guide rail mechanism; 71. X-axis guide rail; 72. Y-axis guide rail; 73. Second drive motor;
[0032] 80. Synchronous linkage;
[0033] 90. Third guide rail mechanism;
[0034] a. Electrode roll material. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.
[0036] 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 merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0037] Example 1:
[0038] This application provides a battery electrode unwinding device, which includes at least a fixed base 10, a correction mechanism 20, a first drive motor 30, an unwinding shaft 40, a support arm 50, a first guide rail mechanism 60 for moving the unwinding shaft 40 to adjust its position, a second guide rail mechanism 70 for moving the support arm 50 on a horizontal coordinate axis, and a synchronous connecting rod 80 for moving the unwinding shaft 40 and the support arm 50 synchronously.
[0039] For details, please refer to the appendix. Figure 1-2 .
[0040] Figure 1 A schematic diagram of the structure of a battery electrode unwinding device loaded with electrode roll material provided in an embodiment of this application is shown.
[0041] Figure 2 A schematic diagram of the structure of the battery electrode unwinding device provided in an embodiment of this application is shown.
[0042] In this embodiment, both the first guide rail mechanism 60 and the first drive motor 30 are mounted on the fixed base 10. A connector 41 is provided on one side of the unwinding shaft 40. The connector 41 is movably mounted on the first guide rail mechanism 60. The first drive motor 30 is drivenly connected to the unwinding shaft 40 via the connector 41. One end of the correction mechanism 20 is drivenly connected to the connector 41, and the other end is mounted on the fixed base 10. The support arm 50 is movably mounted on the second guide rail mechanism 70, and its upper end supports the other side of the unwinding shaft 40. A synchronizing rod 80 connects the connector 41 and the second guide rail mechanism 70.
[0043] Based on the above structural connections, the working principle of this application embodiment is as follows:
[0044] The electrode roll a is loaded onto the unwinding shaft 40, which is then driven to rotate by the first drive motor 30. During operation, the electrode roll a on the unwinding shaft 40 may deviate from its optimal working position due to reduced usage. At this time, the correction mechanism 20 detects this situation and uses an internal cylinder to push and pull the connector 41 on the first guide rail mechanism 60, thereby adjusting the position of the unwinding shaft 40. Simultaneously, through the transmission action of the synchronous connecting rod 80, the support arm 50 is adjusted in the same direction on the second guide rail mechanism 70, ensuring that the support arm 50 and the unwinding shaft 40 always maintain a tight support relationship, thus guaranteeing the normal and stable operation of the device.
[0045] This utility model embodiment uses a synchronous connecting rod 80 and a second guide rail mechanism 70 to synchronize the adjustment of the unwinding shaft 40 and the support arm 50, so that the support arm 50 can always support the unwinding shaft 40, resulting in higher stability and stronger load-bearing capacity.
[0046] Example 2:
[0047] Based on implementation 1, in order to optimize the feeding procedure of electrode roll a, this embodiment further optimizes the structure of the second guide rail mechanism 70 of this utility model.
[0048] Please refer to Figure 2-3 , Figure 3 This diagram illustrates the structure of the battery electrode unwinding device provided in an embodiment of this application, showing the feeding state.
[0049] The second guide rail mechanism 70 in this embodiment is provided with an x-axis guide rail 71, a y-axis guide rail 72, and a second drive motor 73. The sliding direction of the x-axis guide rail 71 is the same as the sliding direction of the first guide rail mechanism 60. The y-axis guide rail 72 is movably mounted on the x-axis guide rail 71. The support arm 50 is movably mounted on the y-axis guide rail 72. The second drive motor 73 is drivenly connected to the support arm 50. A synchronous connecting rod 80 connects the connecting member 41 and the y-axis guide rail 72.
[0050] Based on the above structural connections, the working principle of the feeding procedure in this embodiment of the application can be summarized as follows:
[0051] Upon receiving a signal indicating the need for material loading, the support arm 50 moves along the y-axis track under the drive of the second drive motor 73, moving away from the unwinding shaft 40 and thus providing ample loading space for the electrode roll a. When the electrode roll a is fully loaded, the support arm 50 moves along the y-axis track again under the drive of the second drive motor 73, bringing it closer to and engaging with the unwinding shaft 40.
[0052] Example 3:
[0053] The difference between this embodiment and Embodiments 1 and 2 is that, based on Embodiments 1 and 2, this embodiment not only adds a third guide rail mechanism 90, but also further optimizes the functional structure of the unwinding shaft 40, the support arm 50, and the correction mechanism 20. Please refer to... Figure 2-3 .
[0054] This embodiment adds a third guide rail mechanism 90 for supporting and transmitting the synchronous link 80. The synchronous link 80 is movably mounted on the third guide rail mechanism 90, with one end connected to the connector 41 and the other end connected to the second guide rail mechanism 70. The sliding direction of the third guide rail mechanism 90 is the same as that of the first guide rail mechanism 60. The third guide rail mechanism 90 can provide a more stable and smooth transmission effect for the synchronous link 80.
[0055] In this embodiment, the unwinding shaft 40 is provided with an inflation mechanism 42, which is arranged around the shaft of the unwinding shaft 40. After the electrode roll a is loaded, the inflation mechanism 42 inflates to tightly fit the electrode roll a, making it less likely to fall off the unwinding shaft 40, and at the same time, it can better rotate the electrode roll a.
[0056] In this embodiment, the support arm 50 is provided with a limiting groove 51 for engaging with the side end of the unwinding shaft 40 and a locking member 52 for tightly fitting the unwinding shaft 40 to the support arm 50. The limiting groove 51 is configured as a semi-circular groove that matches the side end shaft of the unwinding shaft 40. The locking member 52 is disposed on the limiting groove 51. When the unwinding shaft 40 is sleeved on the limiting groove 51, the support arm 50 can be tightly fitted with the unwinding shaft 40 by means of the locking member 52, preventing the unwinding shaft 40 from disengaging from the support of the support arm 50 during operation.
[0057] In some preferred embodiments, the locking member 52 is provided with a limit rod and a first cylinder for driving the limit rod to extend or retract. The limit rod is located at the opening of the limit groove 51. The first cylinder is connected to the limit rod. When the unwinding shaft 40 is sleeved on the limit groove 51, the first cylinder drives the limit rod to extend, locking one end of the unwinding shaft 40 onto the limit groove 51. When the first cylinder drives the limit rod to retract, the unwinding shaft 40 can be disengaged from the support arm 50.
[0058] In this embodiment, the web guiding mechanism 20 is equipped with a sensor for monitoring the position of the unwinding shaft 40. The sensor can provide the web guiding mechanism 20 with more accurate position information of the unwinding shaft 40, so that the web guiding mechanism 20 can better control the position of the unwinding shaft 40.
[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0060] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0061] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0062] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0063] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.
Claims
1. A battery electrode unwinding device, characterized in that, It includes at least a fixed base (10), a correction mechanism (20), a first drive motor (30), an unwinding shaft (40), a support arm (50), a first guide rail mechanism (60) for moving the unwinding shaft (40) to adjust its position, a second guide rail mechanism (70) for moving the support arm (50) on a horizontal coordinate axis, and a synchronizing link (80) for synchronizing the movement of the unwinding shaft (40) and the support arm (50). The first guide rail mechanism (60) and the first drive motor (30) are both mounted on the fixed base (10); a connector (41) is provided on one side of the unwinding shaft (40); the connector (41) is movably mounted on the first guide rail mechanism (60); the first drive motor (30) is driven connected to the unwinding shaft (40) through the connector (41); one end of the correction mechanism (20) is driven connected to the connector (41), and the other end is mounted on the fixed base (10); the support arm (50) is movably mounted on the second guide rail mechanism (70), and its upper end supports the other side of the unwinding shaft (40); the synchronous connecting rod (80) is connected between the connector (41) and the second guide rail mechanism (70).
2. The battery electrode unwinding device according to claim 1, characterized in that, The second guide rail mechanism (70) is provided with an x-axis guide rail (71), and the sliding direction of the x-axis guide rail (71) is the same as the sliding direction of the first guide rail mechanism (60).
3. The battery electrode unwinding device according to claim 2, characterized in that, The second guide rail mechanism (70) is also provided with a y-axis guide rail (72) and a second drive motor (73). The y-axis guide rail (72) is movably mounted on the x-axis guide rail (71). The support arm (50) is movably mounted on the y-axis guide rail (72). The second drive motor (73) is drivenly connected to the support arm (50). The synchronous connecting rod (80) is connected between the connecting member (41) and the y-axis guide rail (72).
4. The battery electrode unwinding device according to claim 1, characterized in that, It also includes a third guide rail mechanism (90) for supporting and transmitting the synchronous link (80). The synchronous link (80) is movably mounted on the third guide rail mechanism (90), with one end connected to the connector (41) and the other end connected to the second guide rail mechanism (70). The sliding direction of the third guide rail mechanism (90) is the same as the sliding direction of the first guide rail mechanism (60).
5. The battery electrode unwinding device according to claim 1, characterized in that, The unwinding shaft (40) is provided with an inflation mechanism (42), which is arranged around the shaft of the unwinding shaft (40).
6. The battery electrode unwinding device according to claim 1, characterized in that, The support arm (50) is provided with a limiting groove (51) for engaging with the side end of the unwinding shaft (40).
7. The battery electrode unwinding device according to claim 6, characterized in that, The limiting groove (51) is configured as a semi-circular groove that matches the side end shaft of the unwinding shaft (40).
8. The battery electrode unwinding device according to claim 6, characterized in that, The support arm (50) is also provided with a locking member (52) for tightly fitting the unwinding shaft (40) and the support arm (50), and the locking member (52) is provided on the limiting groove (51).
9. The battery electrode unwinding device according to claim 8, characterized in that, The locking member (52) is provided with a limit rod and a first cylinder for driving the limit rod to extend and retract. The limit rod is located at the opening of the limit groove (51). The first cylinder is connected to the limit rod.
10. The battery electrode unwinding device according to claim 1, characterized in that, The correction mechanism (20) is equipped with a sensor for monitoring the position of the unwinding shaft (40).