Battery cell vacuumizing and sealing device
By designing an integrated cell vacuuming and sealing device, the cell can be simultaneously vacuumed and sealed in a vacuum environment, solving the problems of low production efficiency and impurity residue in existing technologies, and improving the production quality and consistency of lithium batteries.
Patent Information
- Application Number
- CN202423270332.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing cell vacuuming and sealing devices are separate, resulting in insufficient integration, low production efficiency, and easy retention of gaseous impurities inside the cells.
Design a battery cell vacuuming and sealing device, which includes a primary vacuuming mechanism and a secondary vacuuming and sealing mechanism. The battery cells are sequentially transported to each mechanism by a conveying mechanism for preliminary and secondary vacuuming treatment, and the sealing operation is completed in a vacuum environment, integrating the vacuuming and sealing processes.
It improves the integration and efficiency of cell production, ensures the vacuum level inside the cell, reduces impurity residue, and enhances the production quality and consistency of lithium batteries.
Smart Images
Figure CN223941809U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of lithium battery production, and in particular to a cell vacuuming and sealing device. Background Technology
[0002] After the electrolyte injection process is completed, vacuuming and sealing processes are required to form the final finished battery cell. Vacuuming can effectively remove residual air inside the battery cell pouch, thereby reducing the vacuum level inside the battery cell pouch and preventing battery capacity decay and short circuit risks caused by excessively low vacuum. Battery cell sealing refers to the process of sealing its internal components such as positive electrode, negative electrode, electrolyte, separator, and battery pouch together to form a complete battery cell or battery pack. Both steps aim to ensure the battery's performance, safety, and stability, and adapt to the needs of various application scenarios.
[0003] Currently, the battery cell vacuuming and sealing devices on the market have the following problems: the battery cell vacuuming device and the battery cell sealing device are usually assembled separately, the integration between the two processes is insufficient, the battery cell production efficiency is low, and there is a lack of multiple vacuum treatment processes after the battery cell is injected with electrolyte, which makes it easy for excess gas impurities to accumulate inside the battery cell, which urgently needs to be solved. Utility Model Content
[0004] To address the shortcomings of the prior art, this application provides a battery cell vacuuming and sealing device.
[0005] The above-mentioned inventive objective of this application is achieved through the following technical solutions:
[0006] A work board, wherein the work board is provided with a number of workstations for placing power supply cores;
[0007] The primary vacuuming mechanism performs a preliminary vacuuming process inside the battery bag of the battery cell and places the battery cell in a vacuum environment for static placement.
[0008] The secondary vacuum sealing mechanism performs a secondary vacuuming and sealing process on the battery bag of the battery cell after the primary vacuuming mechanism has been processed in a vacuum environment.
[0009] A conveying mechanism is provided, wherein the working plate is connected to the conveying mechanism, and the conveying mechanism is used to sequentially convey the working plate to the primary vacuuming mechanism and the secondary vacuuming and sealing mechanism.
[0010] By adopting the above technical solution, the battery cell is placed on the workstation to ensure its positioning stability during the subsequent vacuuming process. Under the action of the conveying mechanism, the battery cell can sequentially enter the primary vacuuming mechanism and the secondary vacuuming and sealing mechanism to complete the vacuuming and sealing processes in sequence. In the primary vacuuming mechanism, the battery cell's internal battery bag can undergo preliminary vacuuming to remove most of the air and impurities. Simultaneously, the battery cell is placed in a vacuum environment for settling. During this settling phase, the internal gas is further expelled and the internal pressure gradually stabilizes, preparing for the subsequent secondary vacuuming and sealing. This ensures the quality of the subsequent sealing process and also... This improves the consistency of mass production of battery cells. After the first vacuuming and settling, the battery cells are transported to the secondary vacuuming and sealing mechanism. In the secondary vacuuming and sealing mechanism, the battery cell bag undergoes a second vacuuming process to ensure that the vacuum level inside the battery bag meets the standard before sealing the battery cell bag to form the finished battery cell. The secondary vacuuming and sealing mechanism can remove excess gas impurities from the battery cell and integrate the vacuuming and sealing processes into the same mechanism, allowing the battery cells to be sealed simultaneously in a vacuum environment. This improves the integration of processes and equipment, thereby increasing the production efficiency of lithium batteries.
[0011] In a preferred embodiment, this application can be further configured as follows: the primary vacuuming mechanism includes a vertically arranged first mounting frame, a first vacuum cylinder, and a first vacuum chamber. The first vacuum cylinder is vertically mounted on the first mounting frame. The top of the first vacuum chamber is fixedly connected to the piston rod of the first vacuum cylinder. There is a closed position on the moving path of the first vacuum chamber. When the first vacuum chamber is in the closed position and the working plate is located directly below the first vacuum chamber, a closed cavity is formed between the first vacuum chamber and the working plate. The first vacuum chamber has a first air extraction port, which is connected to an external air pump.
[0012] By adopting the above technical solution, when the conveying mechanism moves the working plate to the first vacuum chamber, the piston rod driven by the first vacuum cylinder is controlled to lift the first vacuum chamber, so as to form a closed cavity with the working plate. This allows the cells in each workstation to be in a stable and controlled environment, which can effectively improve the accuracy and consistency of vacuuming. Then, the external air pump performs vacuuming treatment on the closed cavity through the first air extraction port to remove air and impurities from inside the battery cell bag.
[0013] In a preferred embodiment, this application can be further configured as follows: the secondary vacuum sealing mechanism includes a vertically arranged second mounting frame, a second vacuum cylinder, and a second vacuum chamber. The second vacuum cylinder is vertically mounted on the second mounting frame. The top of the second vacuum chamber is fixedly connected to the piston rod of the second vacuum cylinder. There is a closed position on the moving path of the second vacuum chamber. When the second vacuum chamber is in the closed position and the working plate is directly below the second vacuum chamber, a closed cavity is formed between the second vacuum chamber and the working plate. The second vacuum chamber has a second air extraction port connected to an external air pump. A plurality of sealing modules are arranged inside the second vacuum chamber corresponding to the number of workstations. When a closed cavity is formed between the second vacuum chamber and the working plate, the sealing modules are used to seal the battery cells and bags on the corresponding workstations.
[0014] By adopting the above technical solution, when the conveying mechanism moves the working plate to the second vacuum chamber, the piston rod driven by the second vacuum cylinder is controlled to lift and lower the second vacuum chamber, forming a closed cavity with the working plate. This ensures that the cells in each workstation are in a stable and controlled environment, further improving the accuracy and consistency of vacuuming. Then, an external air pump further evacuates the closed cavity through the second air extraction port, and the sealing process is completed simultaneously through the corresponding sealing module in a vacuum environment. This allows for the simultaneous vacuuming and sealing of the battery cells and battery bags, improving the integration of processes and equipment, and thus increasing the production efficiency of lithium batteries.
[0015] In a preferred embodiment, the sealing module may be further configured as follows: the sealing module includes a lifting cylinder, a lifting and hot-pressing linkage assembly, and two hot-pressing sealing blocks arranged opposite each other. The lifting cylinder is vertically installed and extends through the top of the second vacuum cylinder. Both hot-pressing sealing blocks are connected to the lifting cylinder and have heating elements inside. The heating elements are used to heat the hot-pressing sealing blocks. The lifting and hot-pressing linkage assembly is connected to the lifting cylinder and drives the two hot-pressing sealing blocks to move towards or away from each other when the lifting cylinder drives the piston rod to move the two hot-pressing sealing blocks downward or upward.
[0016] By adopting the above technical solution, after the second vacuum chamber and the working plate form a closed cavity and the secondary vacuuming process is completed, the lifting cylinder drives two oppositely arranged hot-press sealing blocks to move downwards towards the battery cell bag on the workstation seat. At the same time, the lifting hot-press linkage component drives the two hot-press sealing blocks to move towards each other until the two hot-press sealing blocks abut against the opposite sides of the battery cell bag. Then, the hot-press sealing blocks are heated by the heating element to complete the hot-press sealing operation of the battery cell bag. By setting the lifting hot-press linkage component, the two opposite hot-press sealing blocks can perform dual-axis movement synchronously, which can improve the sealing efficiency of the battery cell bag.
[0017] In a preferred embodiment, the present application may be further configured as follows: the lifting and hot-pressing linkage assembly includes a lifting moving frame and a connecting plate, both of which are fixedly connected to the piston rod of the lifting cylinder. The connecting plate has two symmetrical and inclined strip-shaped sliding holes, and a slider is slidably disposed in the strip-shaped sliding holes. The two hot-pressing sealing blocks are respectively fixedly connected to the two sliders and are slidably connected to the lifting moving frame.
[0018] By adopting the above technical solution, when the piston rod driven by the lifting cylinder moves downward, it will drive the lifting moving frame and the connecting plate to move downward synchronously. At this time, the connecting plate abuts against the slider located in the strip sliding hole. Since the strip sliding hole is inclined, the slider will generate horizontal displacement synchronously during the downward movement, so as to drive the hot-press sealing block fixedly connected to it to generate horizontal displacement synchronously on the lifting moving frame, thereby realizing the synchronous lifting and horizontal movement of the hot-press sealing block and improving the sealing efficiency of the battery cell.
[0019] In a preferred embodiment, this application can be further configured such that: the lifting and moving frame is provided with a guide rail, and both of the hot-press sealing blocks are slidably connected to the guide rail.
[0020] By adopting the above technical solution and setting guide rails, the hot-press sealing block can be guided and its sliding stability can be improved.
[0021] In summary, this application includes at least one of the following beneficial technical effects:
[0022] 1. Under the action of the conveying mechanism, the battery cells can sequentially enter the primary vacuuming mechanism and the secondary vacuuming and sealing mechanism to complete the vacuuming and sealing processes in sequence. In the primary vacuuming mechanism, the battery cell's internal battery bag can undergo preliminary vacuuming to remove most of the air and impurities inside the battery bag. At the same time, the battery cell is placed in a vacuum environment for settling. During the settling stage, the gas inside the battery cell is further discharged and the internal pressure gradually stabilizes, preparing for the subsequent secondary vacuuming and sealing. This ensures the quality of the subsequent sealing process and improves the consistency of mass battery cell production, completing the primary vacuuming process. After vacuuming and settling, the battery cells are transported to a secondary vacuum sealing mechanism. In this mechanism, the battery cell pouch undergoes a second vacuuming process to ensure that the vacuum level inside the pouch meets the standard before sealing, forming the finished battery cell. This secondary vacuum sealing mechanism removes excess gas and impurities from the battery cell and integrates the vacuuming and sealing processes into the same mechanism. This allows the battery cells to be sealed simultaneously in a vacuum environment, improving the integration of processes and equipment, and thus increasing the production efficiency of lithium batteries.
[0023] 2. By controlling the piston rod driven by the first vacuum cylinder to raise and lower the first vacuum chamber, a closed cavity is formed in conjunction with the working plate, so that the cells in each workstation can be in a stable and controlled environment, which can effectively improve the accuracy and consistency of vacuuming. Then, the external air pump performs vacuuming treatment on the closed cavity through the first air extraction port to remove air and impurities from inside the battery cell bag.
[0024] 3. By controlling the piston rod driven by the second vacuum cylinder to raise and lower the second vacuum chamber, a closed cavity is formed in conjunction with the working plate. This ensures that the cells in each workstation are in a stable and controlled environment, further improving the accuracy and consistency of vacuuming. Then, an external air pump further evacuates the closed cavity through the second air extraction port, and the sealing process is completed simultaneously through the corresponding sealing module in a vacuum environment. This allows for the simultaneous vacuuming and sealing of the battery cells and bags, improving the integration of processes and equipment, and thus increasing the production efficiency of lithium batteries.
[0025] 4. When the piston rod driven by the lifting cylinder moves downward, it will drive the lifting moving frame and the connecting plate to move downward synchronously. At this time, the connecting plate abuts against the slider located in the strip sliding hole. Since the strip sliding hole is inclined, the slider will generate horizontal displacement synchronously during the downward movement, so as to drive the hot-press sealing block fixedly connected to it to generate horizontal displacement synchronously on the lifting moving frame, thereby realizing the synchronous lifting and horizontal movement of the hot-press sealing block, improving the sealing efficiency of the battery cell. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the cell vacuuming and sealing device after removing part of the conveying mechanism in one embodiment of this application;
[0027] Figure 2 This is a schematic diagram of the structure of a primary vacuuming mechanism in one embodiment of this application;
[0028] Figure 3 This is a schematic diagram of the overall structure of the secondary vacuum sealing mechanism in one embodiment of this application;
[0029] Figure 4 This is a schematic diagram of the secondary vacuum sealing mechanism after removing the second vacuum chamber in one embodiment of this application;
[0030] Figure 5 This is a schematic diagram of the sealing module in one embodiment of this application.
[0031] Reference numerals: D1, working plate; D2, primary vacuuming mechanism; D21, first mounting bracket; D22, first vacuuming cylinder; D23, first vacuuming chamber; D24, first air extraction port; D3, secondary vacuuming and sealing mechanism; D31, second mounting bracket; D32, second vacuuming cylinder; D33, second vacuuming chamber; D34, second air extraction port; D35, sealing module; D351, lifting cylinder; D352, lifting and hot-pressing linkage assembly; D3521, lifting moving frame; D3522, connecting plate; D3523, strip-shaped sliding hole; D3524, slider; D353, hot-pressing sealing block; D4, conveying mechanism; D5, workstation base; D6, guide rail. Detailed Implementation
[0032] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.
[0033] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.
[0034] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.
[0035] A battery cell vacuuming and sealing device of this application is described below with reference to the accompanying drawings.
[0036] Reference Figures 1 to 5 Among them, such as Figure 1 As shown, the battery cell vacuuming and sealing device includes a working plate D1, a primary vacuuming mechanism D2, a secondary vacuuming and sealing mechanism D3, and a conveying mechanism D4. The working plate D1 is connected to the conveying mechanism D4 and is equipped with several workstations D5 for placing battery cells. The primary vacuuming mechanism D2 is used to perform preliminary vacuuming treatment on the battery cell pouch and place the battery cell in a vacuum environment for static treatment. The secondary vacuuming and sealing mechanism D3 is used to perform secondary vacuuming treatment and sealing treatment on the battery cell pouch after the primary vacuuming mechanism D2 in a vacuum environment. The conveying mechanism D4 is used to sequentially convey the working plate D1 to the primary vacuuming mechanism D2 and the secondary vacuuming and sealing mechanism D3. The battery cell is placed on the workstation D5 to ensure the positioning stability of the battery cell during the subsequent vacuuming process. Under the action of the conveying mechanism D4, the battery cell can sequentially enter the primary vacuuming mechanism D2 and the secondary vacuuming and sealing mechanism D3 to complete the vacuuming and sealing processes in sequence. In the primary vacuuming mechanism D2, the battery cell... The battery bag undergoes initial vacuuming to remove most of the air and impurities, while simultaneously allowing the battery cells to settle in a vacuum environment. During this settling phase, the gas inside the battery cells is further expelled, and the internal pressure gradually stabilizes, preparing for subsequent secondary vacuuming and sealing. This ensures the quality of the subsequent sealing process and improves the consistency of mass-produced battery cells. After the first vacuuming and settling, the battery cells are transported to the secondary vacuuming and sealing mechanism D3. In D3, the battery cell bag undergoes a second vacuuming process to ensure that the vacuum level inside the battery bag meets the standard before sealing, forming the finished battery cell. The secondary vacuuming and sealing mechanism D3 removes excess gas and impurities from the battery cells and integrates the vacuuming and sealing processes into the same mechanism, allowing the battery cells to be sealed simultaneously in a vacuum environment. This improves the integration of processes and equipment, thereby increasing the production efficiency of lithium batteries.
[0037] It should be noted that the conveying mechanism D4 can use conventional conveying equipment on the market, such as linear track modules, belt conveyor modules, etc. The working plate D1 is slidably installed onto the conveying equipment to realize the movement and conveying of the working plate D1.
[0038] Specifically, in this embodiment, such as Figure 1 and Figure 2 As shown, the vacuuming mechanism D2 includes a vertically arranged first mounting frame D21, a first vacuum cylinder D22, and a first vacuum chamber D23. The first vacuum cylinder D22 is vertically mounted on the first mounting frame D21. The top of the first vacuum chamber D23 is fixedly connected to the piston rod of the first vacuum cylinder D22. There is a closed position on the moving path of the first vacuum chamber D23. When the first vacuum chamber D23 is in the closed position and the working plate D1 is directly below the first vacuum chamber D23, a closed cavity is formed between the first vacuum chamber D23 and the working plate D1. The body D23 has a first air extraction port D24, which is connected to an external air pump. When the conveying mechanism D4 moves the working plate D1 to the first vacuum chamber D23, the piston rod of the first vacuum cylinder D22 is controlled to lift the first vacuum chamber D23, so as to form a closed cavity with the working plate D1. This allows the cells in each workstation D5 to be in a stable and controlled environment, which can effectively improve the accuracy and consistency of vacuuming. Then, the external air pump performs vacuuming on the closed cavity through the first air extraction port D24 to remove air and impurities from inside the battery cell bag.
[0039] like Figure 3 and Figure 4As shown, the secondary vacuum sealing mechanism D3 includes a vertically arranged second mounting frame D31, a second vacuum cylinder D32, and a second vacuum chamber D33. The second vacuum cylinder D32 is vertically mounted on the second mounting frame D31. The top of the second vacuum chamber D33 is fixedly connected to the piston rod of the second vacuum cylinder D32. There is a closed position on the moving path of the second vacuum chamber D33. When the second vacuum chamber D33 is in the closed position and the working plate D1 is directly below the second vacuum chamber D33, a closed cavity is formed between the second vacuum chamber D33 and the working plate D1. The second vacuum chamber D33 has a second air extraction port D34, which is connected to an external air pump. Several sealing modules D35 are arranged inside the second vacuum chamber D33 corresponding to the number of workstations D5. When a closed cavity is formed between the cells, the sealing module D35 is used to seal the battery bags on the corresponding workstation D5. When the conveying mechanism D4 moves the working plate D1 to the second vacuum chamber D33, the piston rod driven by the second vacuum cylinder D32 is controlled to lift and lower the second vacuum chamber D33 to cooperate with the working plate D1 to form a closed cavity. This ensures that the cells in each workstation D5 are in a stable and controlled environment, further improving the accuracy and consistency of vacuuming. Then, the external air pump further evacuates the closed cavity through the second air extraction port D34, and the sealing process is completed simultaneously by the corresponding sealing module D35 in a vacuum environment. This allows for the sealing of the battery bags while further evacuating in a vacuum environment, improving the integration of processes and equipment, and thus increasing the production efficiency of lithium batteries.
[0040] Specifically, the sealing module D35 includes a lifting cylinder D351, a lifting and hot-pressing linkage component D352, and two hot-pressing sealing blocks D353 arranged opposite each other. The lifting cylinder D351 is vertically installed and passes through the top of the second vacuum cylinder D32. Both hot-pressing sealing blocks D353 are connected to the lifting cylinder D351 and have heating elements inside. The heating elements are used to heat the hot-pressing sealing blocks D353. The lifting and hot-pressing linkage component D352 is connected to the lifting cylinder D351 and drives the two hot-pressing sealing blocks D353 to move towards or away from each other when the lifting cylinder D351 drives the piston rod to move the two hot-pressing sealing blocks D353 downward or upward. The second vacuum chamber D33 and the working plate D1... After forming a closed cavity and completing the secondary vacuuming process, the lifting cylinder D351 drives two opposing hot-press sealing blocks D353 to move downwards towards the battery cell bag on the workstation seat D5. At the same time, the lifting hot-press linkage component D352 drives the two hot-press sealing blocks D353 to move towards each other until the two hot-press sealing blocks D353 respectively abut against the opposite sides of the battery cell bag. Then, the hot-press sealing blocks D353 are heated by the heating element, thereby completing the hot-press sealing operation of the battery cell bag. By setting the lifting hot-press linkage component D352, the two opposing hot-press sealing blocks D353 can perform dual-axis movement synchronously, which can improve the sealing efficiency of the battery cell bag.
[0041] Preferably, such as Figure 5 As shown, the lifting and hot-pressing linkage assembly D352 includes a lifting moving frame D3521 and a connecting plate D3522. Both the lifting moving frame D3521 and the connecting plate D3522 are fixedly connected to the piston rod of the lifting cylinder D351. The connecting plate D3522 has two symmetrically arranged and inclined strip-shaped sliding holes D3523. A slider D3524 is slidably disposed within each strip-shaped sliding hole D3523. Two hot-pressing sealing blocks D353 are respectively fixedly connected to the two sliders D3524 and are also slidably connected to the lifting moving frame D3521. The lifting cylinder D351 drives the piston... When the rod moves downward, it will drive the lifting and moving frame D3521 and the connecting plate D3522 to move downward synchronously. At this time, the connecting plate D3522 abuts against the slider D3524 located in the strip sliding hole D3523. Since the strip sliding hole D3523 is inclined, the slider D3524 will generate horizontal displacement synchronously during the downward movement, so as to drive the hot-press sealing block D353 fixedly connected to it to generate horizontal displacement synchronously on the lifting and moving frame D3521. This realizes that the hot-press sealing block D353 is driven to lift and move horizontally synchronously, improving the sealing efficiency of the battery cell.
[0042] Furthermore, the lifting and moving frame D3521 is equipped with a guide rail D6, and both hot-press sealing blocks D353 are slidably connected to the guide rail D6. By setting the guide rail D6, the hot-press sealing blocks D353 can be guided and their sliding stability can be improved.
[0043] The implementation principle of the battery cell vacuuming and sealing device in this application embodiment is as follows: During operation, the battery cell after liquid injection is placed vertically on the workstation D5. The conveying mechanism D4 conveys the workstation plate and drives the battery cell on the workstation D5 to the primary vacuuming mechanism D2. By starting and controlling the first vacuuming cylinder D22, the piston rod drives the first vacuuming chamber D23 to rise and fall, so as to cooperate with the work plate D1 to form a closed cavity. Then, the external air pump completes the primary vacuuming process of the closed cavity through the first air extraction port D24. After the battery bag completes the primary vacuuming process, the conveying mechanism D4 conveys the workstation plate to the secondary vacuuming and sealing mechanism D3. By controlling the second vacuuming cylinder D32, the piston rod drives the second vacuuming chamber D33 to rise and fall, so as to cooperate with the work plate D1 to form a closed cavity. Then, the external air pump performs further vacuuming process of the closed cavity through the second air extraction port D34, and the sealing process is completed simultaneously through the corresponding sealing module D35 in a vacuum environment, thus completing the sealing process of the battery cell and battery bag.
[0044] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A battery cell vacuuming and sealing device, characterized in that, include: The work board (D1) is provided with a number of workstations (D5) for placing power supply cores; The primary vacuuming mechanism (D2) performs preliminary vacuuming inside the battery bag of the battery cell and places the battery cell in a vacuum environment for static placement. The secondary vacuum sealing mechanism (D3) performs a secondary vacuuming and sealing process on the battery bag of the battery cell after the primary vacuuming mechanism (D2) in a vacuum environment. The conveying mechanism (D4) is connected to the working plate (D1), and the conveying mechanism (D4) is used to sequentially convey the working plate (D1) to the primary vacuuming mechanism (D2) and the secondary vacuuming and sealing mechanism (D3).
2. The cell vacuuming and sealing device as described in claim 1, characterized in that, The vacuuming mechanism (D2) includes a vertically arranged first mounting frame (D21), a first vacuum cylinder (D22), and a first vacuum chamber (D23). The first vacuum cylinder (D22) is vertically mounted on the first mounting frame (D21). The top of the first vacuum chamber (D23) is fixedly connected to the piston rod of the first vacuum cylinder (D22). There is a closed position on the moving path of the first vacuum chamber (D23). When the first vacuum chamber (D23) is in the closed position and the working plate (D1) is located directly below the first vacuum chamber (D23), a closed cavity is formed between the first vacuum chamber (D23) and the working plate (D1). The first vacuum chamber (D23) has a first air extraction port (D24), which is connected to an external air pump.
3. The cell vacuuming and sealing device as described in claim 1, characterized in that, The secondary vacuum sealing mechanism (D3) includes a vertically arranged second mounting bracket (D31), a second vacuum cylinder (D32), and a second vacuum chamber (D33). The second vacuum cylinder (D32) is vertically mounted on the second mounting bracket (D31). The top of the second vacuum chamber (D33) is fixedly connected to the piston rod of the second vacuum cylinder (D32). There is a closed position on the moving path of the second vacuum chamber (D33). When the second vacuum chamber (D33) is in the closed position and the working plate (D1) is located in the second vacuum chamber (D32), the sealing mechanism includes a vertically arranged second mounting bracket (D31), a second vacuum cylinder (D32), and a second vacuum chamber (D33). 33) When directly below, a closed cavity is formed between the second vacuum chamber (D33) and the working plate (D1). The second vacuum chamber (D33) has a second air extraction port (D34) which is connected to an external air pump. The second vacuum chamber (D33) has a number of sealing modules (D35) inside corresponding to the number of workstations (D5). When a closed cavity is formed between the second vacuum chamber (D33) and the working plate (D1), the sealing modules (D35) are used to seal the battery cells on the corresponding workstations (D5).
4. The cell vacuuming and sealing device as described in claim 3, characterized in that, The sealing module (D35) includes a lifting cylinder (D351), a lifting and hot-pressing linkage assembly (D352), and two hot-pressing sealing blocks (D353) arranged opposite each other. The lifting cylinder (D351) is vertically installed and passes through the top of the second vacuum cylinder (D32). The two hot-pressing sealing blocks (D353) are both connected to the lifting cylinder (D351) and are equipped with heating elements inside. The heating elements are used to heat the hot-pressing sealing blocks (D353). The lifting and hot-pressing linkage assembly (D352) is connected to the lifting cylinder (D351) and drives the two hot-pressing sealing blocks (D353) to move downward or upward when the lifting cylinder (D351) drives the piston rod to move the two hot-pressing sealing blocks (D353) towards each other or away from each other.
5. The cell vacuuming and sealing device as described in claim 4, characterized in that, The lifting and hot-pressing linkage assembly (D352) includes a lifting moving frame (D3521) and a connecting plate (D3522). Both the lifting moving frame (D3521) and the connecting plate (D3522) are fixedly connected to the piston rod of the lifting cylinder (D351). The connecting plate (D3522) has two symmetrical and inclined strip-shaped sliding holes (D3523). A slider (D3524) is slidably disposed in the strip-shaped sliding hole (D3523). The two hot-pressing sealing blocks (D353) are respectively fixedly connected to the two sliders (D3524) and are both slidably connected to the lifting moving frame (D3521).
6. The cell vacuuming and sealing device as described in claim 5, characterized in that, The lifting and moving frame (D3521) is equipped with a guide rail (D6), and both of the hot-press sealing blocks (D353) are slidably connected to the guide rail (D6).