A double-compensated diaphragm band circuit system and a laminator
By using a dual-compensation diaphragm belt system to collaboratively control diaphragm tension, the problems of diaphragm tension fluctuation and uneven tightness in lithium-ion battery stacking are solved, improving stacking quality and efficiency while reducing equipment costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN GREENSUN TECH CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-29
AI Technical Summary
Existing lithium-ion battery stacking technologies suffer from problems such as large fluctuations in separator tension, uneven stacking tightness, poor stacking quality, and low efficiency, which are particularly evident in Z-type stacking machines.
A dual-compensation diaphragm belt system is adopted, including a diaphragm unwinding module, a tension detection module, first and second diaphragm compensation modules and a sway module. The diaphragm tension is stabilized through coordinated compensation motion, avoiding abrupt reversals and improving the stability and consistency of the diaphragm stack.
It effectively solved the problems of large diaphragm tension fluctuations and uneven lamination, improved lamination quality and efficiency, and reduced equipment costs.
Smart Images
Figure CN224304711U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery production, and in particular to a dual-compensation diaphragm belt system and a stacking machine. Background Technology
[0002] In the field of lithium-ion battery manufacturing, lamination technology has become the mainstream technology for prismatic and pouch batteries due to its high energy density, long cycle life, and excellent safety. However, the reciprocating motion of the separator in the Z-type lamination process presents the unwinding and transmission system with the dual challenges of tension fluctuations and transmission stability, directly affecting the cell lamination accuracy and battery performance. Specifically, during the operation of the Z-type lamination machine, the lamination table drives the separator to perform periodic reciprocating motion, cooperating with the robotic arm to alternately place positive and negative electrode sheets to form the cell structure. This process characteristic leads to frequent switching of separator unwinding and rewinding actions. Actual test data shows that when the lamination speed increases to 0.5 seconds / sheet, the peak acceleration of the linear motor-driven compensation mechanism can reach 5g. This drastic speed change causes separator tension fluctuations (fluctuation range ±15%), directly resulting in uneven lamination tightness, thus affecting cell performance and safety, and restricting further improvement in lamination efficiency.
[0003] As can be seen from the above, existing lamination technology has technical problems such as large fluctuations in diaphragm tension and uneven lamination tightness when applied, which seriously affect lamination efficiency and product quality. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a dual-compensation diaphragm belt system and a stacking machine, which effectively solves the technical problems of large diaphragm tension fluctuation, uneven stacking, poor stacking quality, and low stacking efficiency in the existing technology.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A dual-compensation diaphragm conveyor system, along the diaphragm conveying path, includes a diaphragm unwinding module, a diaphragm tension detection module, a diaphragm tension control module, a first diaphragm compensation module, a second diaphragm compensation module, and a diaphragm swaying module. The diaphragm unwinding module has an unwinding drive device. The diaphragm tension detection module is used to detect the diaphragm tension on the diaphragm conveyor. The diaphragm tension control module is used to control the diaphragm tension on the diaphragm conveyor. The first and second diaphragm compensation modules are both used to buffer the diaphragm. The diaphragm swaying module is used to drive the diaphragm to sway to achieve Z-shaped stacking motion.
[0007] As a further improvement to the above technical solution, a diaphragm splicing module is provided between the diaphragm unwinding module and the diaphragm tension detection module along the conveying path of the diaphragm.
[0008] As a further improvement to the above technical solution, a diaphragm iron removal module is provided between the diaphragm conveying module and the diaphragm tension detection module along the conveying path of the diaphragm.
[0009] As a further improvement to the above technical solution, a transition roller module is also included along the conveying path of the diaphragm, and the transition roller module has multiple sets.
[0010] As a further improvement to the above technical solution, the first diaphragm compensation module and / or the second diaphragm compensation module both include a compensation module linear motor and a buffer roller mounting plate disposed on the mover of the compensation module linear motor. The buffer roller mounting plate is provided with a buffer roller mounting seat, and there are two buffer roller mounting seats with a buffer roller disposed between the two buffer roller mounting seats.
[0011] As a further improvement to the above technical solution, the diaphragm unwinding module includes a diaphragm unwinding motor and a diaphragm unwinding roller. The output end of the diaphragm unwinding motor is connected to the diaphragm unwinding roller through a reducer and a coupling and is used to drive the diaphragm unwinding roller to rotate. The diaphragm unwinding motor is the unwinding drive device of the diaphragm unwinding assembly.
[0012] As a further improvement to the above technical solution, the diaphragm tension control module includes a tension control motor unit and a tension control swing arm disposed at the output end of the tension control motor unit. A tension control swing roller is disposed on the tension control swing arm. The tension control motor unit is used to drive the tension control swing arm to swing and synchronously drive the tension control swing roller to swing to adjust the tension of the diaphragm passing over the tension control swing roller.
[0013] As a further improvement to the above technical solution, the diaphragm oscillation module includes an oscillation drive assembly and an oscillation frame. The oscillation drive assembly is used to control the oscillation frame to oscillate back and forth. The oscillation frame is provided with an infeed roller group, an outfeed roller group, and a transmission roller located between the infeed roller group and the outfeed roller group.
[0014] This utility model also provides:
[0015] A stacking machine, the stacking machine comprising a stacking table module and the aforementioned dual-compensation diaphragm belt system.
[0016] As a further improvement to the above technical solution, the stacking machine also includes an electrode stacking mechanism, which includes a positive electrode stacking mechanism and a negative electrode stacking mechanism.
[0017] The beneficial effects of this utility model are as follows: This utility model provides a dual-compensation diaphragm belt system and a stacking machine. This dual-compensation diaphragm belt system and stacking machine are equipped with a first diaphragm compensation module and a second diaphragm compensation module. Through the coordinated compensation movement of the first diaphragm compensation module and the second diaphragm compensation module, it can avoid large tension fluctuations in the diaphragm when the diaphragm swaying module is performing Z-shaped stacking, improve the stability of the diaphragm tension, and thus improve the consistency of tension during diaphragm stacking. This is beneficial to improving product quality and production efficiency. At the same time, it can also reduce the performance requirements of the supplementary module when the diaphragm swaying module is performing Z-shaped stacking, thereby reducing equipment costs.
[0018] In summary, this dual-compensation diaphragm belt system and stacking machine effectively solve the technical problems of large diaphragm tension fluctuations, uneven stacking, poor stacking quality, and low stacking efficiency in existing technologies. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Figure 1 This is an assembly diagram of the dual-compensation diaphragm belt system in this utility model;
[0021] Figure 2 This is another assembly diagram of the dual-compensation diaphragm belt system in this utility model;
[0022] Figure 3 This is an assembly diagram of the third angle of the dual-compensation diaphragm belt system in this utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the first diaphragm compensation module in this utility model. Detailed Implementation
[0024] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other, as described above. Figure 1-4 .
[0025] Specific reference Figure 1-3 This utility model provides:
[0026] A dual-compensation diaphragm conveyor system, along the conveying path of the diaphragm 9, includes a diaphragm unwinding module 1, a diaphragm splicing module 71, a diaphragm iron removal module 72, a diaphragm tension detection module 2, a diaphragm tension control module 3, a first diaphragm compensation module 41, a second diaphragm compensation module 42, and a diaphragm sway module 5. It also includes a transition roller module 8, which has multiple sets. The diaphragm splicing module 71 performs diaphragm splicing operations; the diaphragm iron removal module 72 cleans the diaphragm by removing dust; the diaphragm unwinding module 1 has an unwinding drive device; the diaphragm tension detection module 2 detects the diaphragm tension on the conveyor path of the diaphragm 9; the diaphragm tension control module 3 controls the diaphragm tension on the conveyor path of the diaphragm 9; the first diaphragm compensation module 41 and the second diaphragm compensation module 42 both buffer the diaphragm 9; and the diaphragm sway module 5 drives the diaphragm 9 to sway to achieve a Z-shaped stacking motion.
[0027] In the specific implementation of this technical solution, after the dual-compensation diaphragm belt system performs Z-shaped stacking, the diaphragm swaying module 5 sways left and right to perform Z-shaped stacking. Each time it reaches the middle of the stack, the diaphragm 9 will go from a high-speed contraction state to a sudden high-speed release state. Traditional single-diaphragm compensation mechanisms need to perform high-speed left and right movements to follow the contraction and release of the diaphragm 9 in the face of such high-speed rapid direction changes, so that the tension of the diaphragm 9 and the entire diaphragm belt are in a stable transmission state. This places extremely high demands on the responsiveness and performance of the diaphragm compensation module. This solution adopts a dual-compensation module layout, namely, a first diaphragm compensation module 41 and a second diaphragm compensation module 42. Through the coordinated processing of the two compensation modules, the buffer rollers 404 of the first diaphragm compensation module 41 and the buffer rollers 404 of the second diaphragm compensation module 42 move towards each other, avoiding the abrupt reversal of a single diaphragm compensation mechanism. It can achieve perfect diaphragm take-up and release following performance using a lower-performance compensation module, avoiding tension fluctuations in the diaphragm belt. It successfully solves a series of key problems such as large diaphragm tension fluctuations, diaphragm vibration, and diaphragm wrinkles during Z-stacking, providing a strong guarantee for the efficient and stable operation of the stacking machine and the production of high-quality stacked wafers.
[0028] In some embodiments, the diaphragm unwinding module 1 includes a diaphragm unwinding motor and a diaphragm unwinding roller. The output end of the diaphragm unwinding motor is connected to the diaphragm unwinding roller via a reducer and a coupling, and is used to drive the diaphragm unwinding roller to rotate. The diaphragm unwinding motor is an unwinding drive device for the diaphragm unwinding assembly. The diaphragm unwinding motor is a servo motor, which can precisely control the unwinding speed of the diaphragm 9, helping to improve the consistency of the tension of the diaphragm 9 and improve the stacking quality.
[0029] In some embodiments, the diaphragm splicing module 71 is a manual splicing module, which enables manual splicing of the diaphragm 9. In this embodiment, the diaphragm iron removal module 72 has two sets, which are distributed on both sides of the diaphragm 9 and clean the first and second surfaces of the diaphragm 9.
[0030] In some embodiments, the diaphragm tension control module 3 includes a tension control motor assembly and a tension control swing arm disposed at the output end of the tension control motor assembly. A tension control swing roller is disposed on the tension control swing arm. The tension control motor assembly drives the tension control swing arm to swing and simultaneously drives the tension control swing roller to swing, thereby adjusting the tension of the diaphragm passing over the tension control swing roller. In application, the diaphragm tension control module 3 controls the swing direction and amplitude of the tension control swing roller based on the diaphragm tension data detected by the diaphragm tension detection module 2, thereby maintaining the tension of the diaphragm 9 within a certain controllable range and improving the stability of the diaphragm tension.
[0031] Reference Figure 4 In some embodiments, the first diaphragm compensation module 41 and the second diaphragm compensation module 42 have the same structure. In other embodiments, the first diaphragm compensation module 41 and the second diaphragm compensation module 42 may have different structures. In this embodiment, both the first diaphragm compensation module 41 and / or the second diaphragm compensation module 42 include a compensation module linear motor 401 and a buffer roller mounting plate 402 disposed on the mover of the compensation module linear motor 401. The buffer roller mounting plate 402 is provided with a buffer roller mounting seat 403, and there are two buffer roller mounting seats 403, with a buffer roller 404 disposed between the two buffer roller mounting seats 403. In this embodiment, the compensation module linear motor 401 serves as a driving component for driving the buffer roller 404 to move. In some other embodiments, provided that performance requirements are met, the implementer may also use existing technologies such as motor screw devices, motor pulley devices, and electric cylinder devices to replace the compensation module linear motor 401. The linear motor 401 of the compensation module used in this embodiment is only one preferred embodiment. In application, the linear drive motor 401 of the compensation module drives the buffer roller mounting plate 402 and the buffer roller mounting seat 403 to move left and right through its mover, and finally drives the buffer roller 404 to move left and right. The diaphragm 9 bypasses the buffer roller 404, and the buffer roller 404 uses the distance of its left and right movement to realize the buffering function of the diaphragm 9.
[0032] In this embodiment, both the first diaphragm compensation module 41 and the second diaphragm compensation module 42 are horizontally arranged. In some other embodiments, the first diaphragm compensation module 41 and the second diaphragm compensation module 42 can be vertically arranged or arranged in a horizontal and vertical manner. The implementer can choose the appropriate layout according to the specific needs, which will not be elaborated here.
[0033] In some embodiments, the diaphragm oscillation module 5 includes an oscillation drive assembly and an oscillation frame. The oscillation drive assembly controls the reciprocating oscillation of the oscillation frame. The oscillation frame is provided with an infeed roller group, an outfeed roller group, and a transmission roller located between the infeed roller group and the outfeed roller group. In application, the diaphragm 9 led from the second diaphragm compensation module 42 passes through the gap between the rollers of the infeed roller group, and then passes around the transmission roller and exits through the gap between the rollers of the outfeed roller group. The diaphragm 9 exiting the outfeed roller group performs a Z-shaped oscillation motion under the drive of its oscillation drive assembly, thereby enabling stacking operations in conjunction with the stacking table module 8.
[0034] Based on the above-mentioned dual-compensation diaphragm belt system, this utility model also provides:
[0035] A wafer stacking machine includes a stacking stage module 6 and the aforementioned dual-compensation diaphragm belt system. It also includes an electrode stacking mechanism, comprising a positive electrode stacking mechanism and a negative electrode stacking mechanism.
[0036] The workflow of the technical solution provided by this utility model is as follows:
[0037] The diaphragm roll is sleeved on the diaphragm unwinding roller. The unwinding drive motor in the diaphragm unwinding module 1 drives the diaphragm unwinding roller to rotate for unwinding. The unwound diaphragm 9 enters the diaphragm splicing module 71 to complete the splicing of the diaphragm 9. After the splicing is completed, the diaphragm 9 passes through the transition roller module 8 and enters the diaphragm tension control module 3, where the tension of the diaphragm 9 is controlled. Further, the diaphragm 9 passes through the transition roller module 8 and enters the first diaphragm compensation module 41 and the second diaphragm compensation module 42. The diaphragm 9 coming out of the second diaphragm compensation module 42 enters the diaphragm sway module 5. Finally, the diaphragm sway module 5 and the stacking table module 6 are used to achieve the Z-shaped stacking operation.
[0038] In this technical solution, through the coordinated processing of two sets of compensation modules, the buffer roller 404 of the first diaphragm compensation module 41 and the buffer roller 404 of the second diaphragm compensation module 42 move towards each other, avoiding the abrupt reversal of a single diaphragm compensation mechanism. A lower-performance compensation module can be used to achieve perfect diaphragm take-up and release following performance, avoiding tension fluctuations in the diaphragm belt. This successfully solves a series of key problems such as large diaphragm tension fluctuations, diaphragm vibration, and diaphragm wrinkles during Z-stacking, providing a strong guarantee for the efficient and stable operation of the stacking machine and the production of high-quality stacked wafers.
[0039] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A dual-compensation diaphragm belt conveyor system, characterized in that: Along the conveying path of the diaphragm (9), there are a diaphragm unwinding module (1), a diaphragm tension detection module (2), a diaphragm tension control module (3), a first diaphragm compensation module (41), a second diaphragm compensation module (42), and a diaphragm swaying module (5). The diaphragm unwinding module (1) has an unwinding drive device. The diaphragm tension detection module (2) is used to detect the diaphragm tension on the diaphragm (9) belt. The diaphragm tension control module (3) is used to control the diaphragm tension on the diaphragm (9) belt. The first diaphragm compensation module (41) and the second diaphragm compensation module (42) are both used to buffer the diaphragm (9). The diaphragm swaying module (5) is used to drive the diaphragm (9) to sway to achieve Z-shaped stacking motion.
2. The dual-compensation diaphragm belt conveyor system according to claim 1, characterized in that: Along the conveying path of the diaphragm (9), a diaphragm splicing module (71) is provided between the diaphragm unwinding module (1) and the diaphragm tension detection module (2).
3. The dual-compensation diaphragm belt conveyor system according to claim 2, characterized in that: Along the conveying path of the diaphragm (9), a diaphragm iron removal module (72) is provided between the diaphragm tape module (71) and the diaphragm tension detection module (2).
4. A dual-compensation diaphragm belt conveyor system according to any one of claims 1-3, characterized in that: Along the conveying path of the diaphragm (9), there is also a transition roller module (8), which has multiple sets.
5. The dual-compensation diaphragm belt conveyor system according to claim 1, characterized in that: The first diaphragm compensation module (41) and / or the second diaphragm compensation module (42) both include a compensation module linear motor (401) and a buffer roller mounting plate (402) disposed on the mover of the compensation module linear motor (401). A buffer roller mounting seat (403) is disposed on the buffer roller mounting plate (402), and there are two buffer roller mounting seats (403) with a buffer roller (404) disposed between the two buffer roller mounting seats (403).
6. The dual-compensation diaphragm belt conveyor system according to claim 1, characterized in that: The diaphragm unwinding module (1) includes a diaphragm unwinding motor and a diaphragm unwinding roller. The output end of the diaphragm unwinding motor is connected to the diaphragm unwinding roller through a reducer and a coupling and is used to drive the diaphragm unwinding roller to rotate. The diaphragm unwinding motor is the unwinding drive device of the diaphragm unwinding assembly.
7. The dual-compensation diaphragm belt conveyor system according to claim 1, characterized in that: The diaphragm tension control module (3) includes a tension control motor unit and a tension control swing arm disposed at the output end of the tension control motor unit. A tension control swing roller is disposed on the tension control swing arm. The tension control motor unit is used to drive the tension control swing arm to swing and simultaneously drive the tension control swing roller to swing in order to adjust the tension of the diaphragm that passes over the tension control swing roller.
8. A dual-compensation diaphragm belt conveyor system according to claim 1, characterized in that: The diaphragm oscillation module (5) includes an oscillation drive assembly and an oscillation frame. The oscillation drive assembly is used to control the oscillation frame to oscillate back and forth. The oscillation frame is provided with an infeed roller group, an outfeed roller group and a transmission roller located between the infeed roller group and the outfeed roller group.
9. A stacking machine, characterized in that: The stacking machine includes a stacking table module (6) and a dual-compensation diaphragm belt system as described in any one of claims 1-8.
10. A stacking machine according to claim 9, characterized in that: The stacking machine also includes an electrode stacking mechanism, which includes a positive electrode stacking mechanism and a negative electrode stacking mechanism.