Double-cell tab dislocation trimming device and processing equipment

Abstract

The utility model discloses a double-cell tab dislocation trimming device and processing equipment, and relates to the technical field of lithium battery processing equipment. The device specifically comprises a first supporting belt, a second supporting belt, a first pressing belt and a second pressing belt. The first pressing belt is arranged above the first supporting belt, and when the first supporting belt conveys a first material area of double battery cells, the first material area is pressed; the second pressing belt is arranged above the second supporting belt, and when the second supporting belt conveys a second material area of the double battery cells, the second pressing belt presses the double battery cells; the driving part assembly drives the first supporting belt and the first pressing belt to synchronously and reversely move and drives the second supporting belt and the second pressing belt to synchronously and reversely move, and the first supporting belt and the second supporting belt rotate synchronously; and the differential part is arranged on one side of the driving assembly and used for forming a speed difference between the first supporting belt and the second supporting belt. The utility model aims to avoid dislocation of tabs in double-cell winding.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery processing equipment, in particular to a double-cell pole ear misalignment trimming device and processing equipment. Background Art

[0002] In the modern lithium battery manufacturing industry, with the rapid development of the industry and the continuous advancement of technology, quality improvement and innovation have become the focus of market competition. Especially in new energy vehicles and portable electronic products, due to their high requirements for battery performance, higher standards are put forward for the internal structure design and manufacturing process of the battery. Among the many lithium battery technologies, the new dual-cell winding technology has gradually attracted the attention of the industry due to its significant advantages in improving battery energy density and reducing battery volume. Dual-cell winding technology refers to the use of a specific manufacturing process to combine two cells together through the pole ears in the same battery structure to achieve the purpose of optimizing battery performance.

[0003] However, as an emerging technology, dual-cell winding technology still faces many technical challenges in the actual production process. One of the most critical links is the quality control problem during the winding process. Winding is an extremely important step in the dual-cell development process, and its quality is directly related to the final performance and safety of the battery. During the winding process, the positive and negative electrode materials and separators of the lithium battery need to be precisely wound to form a stable internal structure. However, due to the particularity of the dual-cell structure, one of the difficulties is the control of the tabs (i.e., the connection points of the positive and negative electrodes of the battery) during the tape walking process. The tab area is very prone to misalignment during the tape walking process due to its thin material (usually only 6-12µm thick) and strong plasticity. In addition, due to factors such as uneven tension on the inside and outside of the winding mechanism and deviation in the size of the transmission path, the transmission speed of the material strip before winding will also be inconsistent, further increasing the probability of tab misalignment.

[0004] The misalignment of the tabs will not only affect the internal structure of the battery and reduce the accuracy of battery assembly, but will also cause unstable battery performance and even safety hazards.

[0005] Therefore, how to avoid misalignment of the tabs during dual-cell winding has become a technical problem that needs to be solved urgently. Utility Model Content

[0006] The main purpose of the utility model is to provide a dual-cell tab misalignment trimming device and processing equipment, aiming to avoid tab misalignment during dual-cell winding.

[0007] In order to achieve the above-mentioned purpose, the utility model proposes a dual-cell tab misalignment trimming device, comprising:

[0008] A first supporting belt, a second supporting belt, a first pressing belt, and a second pressing belt;

[0009] The first compression belt is arranged above the first supporting belt, and when the first supporting belt conveys the first material area of ​​the dual-cell, it is compressed; the second compression belt is arranged above the second supporting belt, and when the second supporting belt conveys the second material area of ​​the dual-cell, it is compressed;

[0010] a driving assembly for driving the first supporting belt and the first pressing belt to move synchronously in reverse and for driving the second supporting belt and the second pressing belt to move synchronously in reverse, wherein the first supporting belt and the second supporting belt rotate synchronously; and

[0011] A differential member is disposed on one side of the driving assembly and is used to form a speed difference between the first supporting belt and the second supporting belt.

[0012] In one embodiment of the present application, the driving gear of the first supporting belt and the driving gear of the first pressing belt are meshed with each other; the driving gear of the second supporting belt and the driving gear of the second pressing belt are meshed with each other.

[0013] In one embodiment of the present application, the driving assembly includes:

[0014] A first transmission rod, a transmission gear is provided at the first end, a bevel gear with a helical angle of 45° is provided at the second end, and the first end of the first transmission rod is meshed with the driving gear of the first compression belt;

[0015] A second transmission rod, a first end of which is provided with a transmission gear, a second end of which is provided with a bevel gear with a helical angle of 45°, the first end of the second transmission rod being meshed with the driving gear of the second compression belt;

[0016] A first rotating rod, a transmission gear being provided at a first end thereof, a bevel gear having a helical angle of 45° being provided at a second end thereof, and the second end of the first rotating rod being meshed with the second end of the first transmission rod;

[0017] The first end of the differential is provided with a transmission gear, the second end of the differential is provided with a bevel gear with a helical angle of 45°, and the second end of the differential is meshed with the second end of the second transmission rod;

[0018] a second rotating rod, a second end of the second rotating rod being engaged with the first end of the differential; and

[0019] A driving member is used to drive the first end of the first rotating rod and the first end of the second rotating rod to rotate synchronously.

[0020] In one embodiment of the present application, the driving assembly further includes:

[0021] A transmission belt, a rack is provided on the inner side of the transmission belt, and the driving gear of the driving member, the driving gear at the first end of the first rotating rod, and the driving gear at the first end of the second rotating rod are all meshed with the rack.

[0022] In one embodiment of the present application, the driving component is a servo motor.

[0023] In one embodiment of the present application, the first compression belt, the first support belt, the second compression belt, and the second support belt are all made of PVC material.

[0024] In one embodiment of the present application, surfaces of the first compression belt, the first support belt, the second compression belt, and the second support belt are covered with a carbon fiber film.

[0025] The present application also discloses a dual-cell processing device, comprising the dual-cell tab misalignment trimming device as described in any one of the above.

[0026] By adopting the above technical solution, the introduced differential can generate a speed difference between the support belts, and the rotation speeds of the first support belt and the second support belt can be flexibly adjusted according to different battery cell manufacturing requirements to achieve a specific trimming effect. The misaligned pole ears can be corrected to an ideal relative position, and the structure is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0028] Figure 1 This is a schematic structural diagram of the first embodiment of the utility model;

[0029] 11. First support belt; 12. First compression belt; 21. Second support belt; 22. Second compression belt; 30. First transmission rod; 40. Second transmission rod; 50. First rotating rod; 60. Differential member; 70. Second rotating rod; 80. Driving member; 90. Transmission belt. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the utility model and do not constitute a limitation on the utility model.

[0031] like Figure 1 As shown, in order to achieve the above-mentioned purpose, the utility model proposes a dual-cell tab misalignment trimming device, comprising:

[0032] A first supporting belt 11, a second supporting belt 21, a first pressing belt 12, and a second pressing belt 22;

[0033] The first compression belt 12 is arranged above the first support belt 11, and when the first support belt 11 conveys the first material area of ​​the dual-cell, it is compressed; the second compression belt 22 is arranged above the second support belt 21, and when the second support belt 21 conveys the second material area of ​​the dual-cell, it is compressed;

[0034] A driving member 80 assembly drives the first supporting belt 11 and the first pressing belt 12 to move in the opposite direction synchronously and drives the second supporting belt 21 and the second pressing belt 22 to move in the opposite direction synchronously, wherein the first supporting belt 11 and the second supporting belt 21 rotate synchronously; and

[0035] The differential member 60 is disposed on one side of the driving assembly and is used to form a speed difference between the first supporting belt 11 and the second supporting belt 21 .

[0036] Specifically, a dual-cell tab misalignment repair device includes: a first support belt 11, a second support belt 21, a first compression belt 12, a second compression belt 22, a drive member 80 assembly and a differential member 60.

[0037] The existence of the first support belt 11 and the second support belt 21 provides a basic platform for the transmission of the dual cells. When the first material area and the second material area of ​​the dual cells pass through the first support belt 11 and the second support belt 21 respectively, the first compression belt 12 and the second compression belt 22 are located above the corresponding support belts, respectively applying appropriate pressure to different material areas of the cells. This compression action ensures that the cells remain stable during the transmission process, preventing errors caused by incorrect transmission posture or vibration.

[0038] The driving member 80 assembly can synchronously drive the first support belt 11 and the compression belt above it, as well as the second support belt 21 and the compression belt above it, and make them move along the reverse path, that is, the first support belt 11 and the first compression belt 12 rotate counterclockwise relative to each other, and the second support belt 21 and the second compression belt 22 rotate counterclockwise relative to each other, thereby ensuring that the battery cells pass smoothly between the first support belt 11 and the first compression belt 12 and between the second support belt 21 and the second compression belt 22.

[0039] The differential 60 is located on the side of the drive assembly. The differential 60 is responsible for adjusting the rotation speed of the first support belt 11 and the second support belt 21 to produce a preset speed difference between the two. The speed difference finely controlled by the differential 60 breaks the inherent synchronous rhythm, thereby facilitating the realization of the misalignment trimming action. The speed difference also guides the relative displacement between the battery cell tabs, so that the misaligned tabs can be corrected to the ideal relative position. Through this differential action, the tab part of the dual battery cell can be effectively trimmed.

[0040] By adopting the above technical solution, the introduced differential 60 can generate a speed difference between the support belts, and the rotation speeds of the first support belt 11 and the second support belt 21 can be flexibly adjusted according to different battery cell manufacturing requirements to achieve a specific trimming effect. The misaligned pole ears can be corrected to an ideal relative position, and the structure is simple and easy to implement.

[0041] In one embodiment of the present application, the driving gear of the first supporting belt 11 and the driving gear of the first pressing belt 12 are meshed with each other; the driving gear of the second supporting belt 21 and the driving gear of the second pressing belt 22 are meshed with each other.

[0042] Specifically, the first support belt 11 is combined with the first compression belt 12, and the second support belt 21 is combined with the second compression belt 22. Each support belt and the corresponding compression belt are each equipped with a driving gear, and the driving gear of the first support belt 11 is precisely meshed with the driving gear of the first compression belt 12. When the first support belt 11 is working, the first compression belt 12 can run synchronously and at the same speed. This operation ensures that when the first material area of ​​the dual-cell is transmitted, it can be effectively compressed while avoiding friction on the surface of the dual-cell, thereby protecting the safety of the material belt. The second support belt 21 has the same function as the second compression belt 22, which will not be repeated here.

[0043] By adopting the above technical solution and the above design, each set of support belts and clamping belts can synchronously convey the material belt, thus avoiding friction on the material belt, improving the safety of the pole piece, and having a simple structure and being easy to implement.

[0044] In one embodiment of the present application, the driving assembly includes:

[0045] A first transmission rod 30, a transmission gear is provided at the first end, and a bevel gear with a helical angle of 45° is provided at the second end, and the first end of the first transmission rod 30 is meshed with the driving gear of the first compression belt 12;

[0046] A second transmission rod 40, a transmission gear is provided at the first end, and a bevel gear with a helical angle of 45° is provided at the second end, and the first end of the second transmission rod 40 is meshed with the driving gear of the second pressing belt 22;

[0047] A first rotating rod 50, a transmission gear is provided at the first end, and a bevel gear with a helical angle of 45° is provided at the second end, and the second end of the first rotating rod 50 is meshed with the second end of the first transmission rod 30;

[0048] The first end of the differential 60 is provided with a transmission gear, the second end of the differential 60 is provided with a bevel gear with a helical angle of 45°, and the second end of the differential 60 is meshed with the second end of the second transmission rod 40;

[0049] a second rotating rod 70, a second end of the second rotating rod 70 being engaged with the first end of the differential member 60; and

[0050] The driving member 80 is used to drive the first end of the first rotating rod 50 and the first end of the second rotating rod 70 to rotate synchronously.

[0051] Specifically, a transmission gear is provided at the first end of the first transmission rod 30. The transmission gear is used to mesh with the driving gear of the first compression belt 12. This structure ensures that the first compression belt 12 can obtain stable power transmission. A bevel gear with a helical angle of 45° is provided at the other end of the first transmission rod 30. This design can not only transmit power, but also change the direction of force during rotation, thereby promoting coordinated movement between different components.

[0052] The second transmission rod 40 has a similar structure to the first transmission rod 30, and the transmission gear at the first end is also meshed with the driving gear of the second compression belt 22 to ensure smooth power transmission. The bevel gear with a helical angle of 45° at the second end has the same function as the first transmission rod 30.

[0053] The first rotating rod 50 is driven by meshing its second end with the bevel gear at the second end of the first transmission rod 30. The angle meshing advantage brought by the bevel gear is utilized to allow the angle deflection of the power while keeping the two running synchronously.

[0054] One end of the differential 60 is equipped with a transmission gear, and the other end of the bevel gear with a helical angle of 45° is meshed with the second end of the second transmission rod 40. Through this meshing, the differential 60 can perform differential speed control on the first support belt 11 and the second support belt 21, so that it can be easily achieved when different speed trimming of the battery cells is required.

[0055] The second rotating rod 70 is used for power transmission. The driving member 80 drives the first end of the first rotating rod 50 and the first end of the second rotating rod 70 to realize synchronous rotation, thereby ensuring the uniformity and synchronization of power distribution of the entire device when performing the compacting task.

[0056] By adopting the above technical solution, the sophisticated design of the entire drive assembly ensures that during the guiding and pressing process of the dual battery cells, the device can achieve the misalignment correction of the tabs while maintaining extremely high stability and consistency.

[0057] In one embodiment of the present application, the driving assembly further includes:

[0058] The transmission belt 90 has a rack on its inner side, and the driving gear of the driving member 80, the driving gear at the first end of the first rotating rod 50, and the driving gear at the first end of the second rotating rod 70 are all meshed with the rack.

[0059] Specifically, the drive assembly further includes a transmission belt 90. The transmission belt 90 is a common transmission element, which is usually used for power connection in the power transmission process and has excellent stability and reliability. In the present application, a rack is provided on the inner side of the transmission belt 90.

[0060] The rack provided on the transmission belt 90 is meshed with the driving gear of the driving member 80 , the driving gear at the first end of the first rotating rod 50 , and the driving gear at the first end of the second rotating rod 70 .

[0061] By adopting the above technical solution, flexible power transmission can be achieved through the conveyor belt, and the structure is simple and easy to implement.

[0062] In one embodiment of the present application, the driving member 80 is a servo motor.

[0063] With the above technical solution, the servo motor has excellent control characteristics and can ensure the precise movement and positioning of mechanical parts. By cooperating with a fine encoder, the servo motor can accurately control the speed, position and acceleration, thereby realizing complex motion trajectories and patterns. In the dual-cell winding technology, it can ensure the accurate alignment of the pole ears during the winding process, reduce the occurrence of misalignment, and improve the production quality of the battery cell.

[0064] In an embodiment of the present application, the first compression belt 12 , the first support belt 11 , the second compression belt 22 , and the second support belt 21 are all made of PVC material.

[0065] By adopting the above technical solution, PVC (polyvinyl chloride), as a plastic material, has good chemical resistance. This allows the compression belt and support belt of PVC material to maintain a long service life in a working environment with strong chemical corrosion, such as contact with chemicals such as electrolytes in the battery manufacturing process, thereby reducing equipment maintenance costs and production downtime caused by material corrosion.

[0066] In an embodiment of the present application, surfaces of the first compression belt 12 , the first support belt 11 , the second compression belt 22 , and the second support belt 21 are covered with a carbon fiber film.

[0067] Specifically, by covering with a carbon fiber film, the generation of static electricity can be reduced and the safety of the dual-cell pole pieces can be protected.

[0068] The present application also discloses a dual-cell processing device, comprising the dual-cell tab misalignment trimming device as described in any one of the above.

[0069] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A dual-cell tab misalignment repair device, characterized in that: include: A first supporting belt, a second supporting belt, a first pressing belt, and a second pressing belt; The first compression belt is arranged above the first supporting belt, and when the first supporting belt conveys the first material area of ​​the dual-cell, it is compressed; the second compression belt is arranged above the second supporting belt, and when the second supporting belt conveys the second material area of ​​the dual-cell, it is compressed; A driving assembly, driving the first supporting belt and the first pressing belt to synchronously reversely move and driving the second supporting belt and the second pressing belt to synchronously reversely move, wherein the first supporting belt and the second supporting belt rotate synchronously; as well as A differential member is disposed on one side of the driving assembly and is used to form a speed difference between the first supporting belt and the second supporting belt.

2. The dual-cell tab misalignment repair device according to claim 1, characterized in that: The driving gear of the first supporting belt and the driving gear of the first pressing belt are meshed with each other; the driving gear of the second supporting belt and the driving gear of the second pressing belt are meshed with each other.

3. The dual-cell tab misalignment repair device according to claim 2, characterized in that: The drive assembly comprises: A first transmission rod, a transmission gear is provided at the first end, a bevel gear with a helical angle of 45° is provided at the second end, and the first end of the first transmission rod is meshed with the driving gear of the first compression belt; A second transmission rod, a first end of which is provided with a transmission gear, a second end of which is provided with a bevel gear with a helical angle of 45°, the first end of the second transmission rod being meshed with the driving gear of the second compression belt; A first rotating rod, a transmission gear being provided at a first end thereof, a bevel gear having a helical angle of 45° being provided at a second end thereof, and the second end of the first rotating rod being meshed with the second end of the first transmission rod; The first end of the differential is provided with a transmission gear, the second end of the differential is provided with a bevel gear with a helical angle of 45°, and the second end of the differential is meshed with the second end of the second transmission rod; a second rotating rod, a second end of the second rotating rod being engaged with the first end of the differential; and A driving member is used to drive the first end of the first rotating rod and the first end of the second rotating rod to rotate synchronously.

4. The dual-cell tab misalignment repair device according to claim 3, characterized in that: The drive assembly also includes: A transmission belt, a rack is provided on the inner side of the transmission belt, and the driving gear of the driving member, the driving gear at the first end of the first rotating rod, and the driving gear at the first end of the second rotating rod are all meshed with the rack.

5. The dual-cell tab misalignment repair device according to claim 4, characterized in that: The driving component is a servo motor.

6. The dual-cell tab misalignment repair device according to claim 1, characterized in that: The first compression belt, the first support belt, the second compression belt, and the second support belt are all made of PVC material.

7. The dual-cell tab misalignment repair device according to claim 6, characterized in that: The surfaces of the first compression belt, the first support belt, the second compression belt, and the second support belt are covered with carbon fiber films.

8. A dual-cell processing device, characterized in that: It comprises a dual-cell tab misalignment trimming device as described in any one of claims 1 to 7.

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