A vacuum injection machine for electrolyte filling in lithium battery processing

Abstract

This invention relates to the field of electrolyte filling technology, and specifically discloses a vacuum filling machine for electrolyte filling in lithium battery processing. The machine includes a worktable, a transmission component fixedly connected to the inner side of the worktable, a feeding component slidably connected to the inner side of the worktable, and the inner side of the feeding component fixedly connected to the output end of the transmission component. A bracket is fixedly connected to the top of the worktable. In this vacuum filling machine for electrolyte filling in lithium battery processing, the scraper, relying on a contact shaft, a first spring, and an arc-shaped guide plate, forms an elastic floating structure. This allows it to closely conform to the side contour of the filling needle, scraping away waste liquid and impurities without dead angles, while avoiding rigid contact that could scratch the needle. The arc-shaped design of the inner side of the guide plate directs and collects the scraped waste liquid, preventing random splashing and structurally reducing waste liquid residue and crystal accumulation. The scraped waste liquid can be quickly drawn into the collection mechanism by negative pressure through the slot plate and connecting pipe.

Description

Technical Field

[0001] This invention relates to the field of electrolyte filling technology, specifically to a vacuum filling machine for electrolyte filling in lithium battery processing. Background Technology

[0002] The vacuum electrolyte filling machine for lithium battery processing is a core automated device specifically designed for electrolyte filling. It uses a vacuum system to create a negative pressure environment inside the battery cell, expelling air between the electrodes and the casing. The pressure difference drives the electrolyte to quickly and evenly wet the cell, effectively preventing air bubbles and improving filling consistency and cell performance. The equipment integrates a high-precision filling pump, vacuum control, vacuum settling, and pressurized immersion functions. A PLC precisely controls the filling volume and vacuum level, adapting to various cell specifications such as cylindrical, prismatic, and pouch cells. It completes sealed electrolyte filling in a low-humidity, clean environment, combining high filling accuracy, stable efficiency, and anti-pollution and anti-electrolyte volatilization characteristics. It is a key piece of equipment for ensuring lithium battery capacity, cycle life, and production yield.

[0003] Chinese patent CN219350615U discloses an automatic electrolyte injection machine for lithium battery processing, including a base plate with a mounting frame fixedly connected to the upper end of the base plate. Two grooves are formed on the inner walls of both sides of the mounting frame. The machine also includes an injection mechanism. The injection mechanism includes two sliders slidably connected to the two grooves on opposite sides, and a protective cover slidably connected to the two sliders on opposite sides. An electric telescopic rod is used to lower the protective cover during electrolyte injection, facilitating protection during lithium battery processing and improving safety and production quality. An electric level sensor controls the measurement of electrolyte in the metering chamber, allowing for equal-volume electrolyte injection during injection, increasing the usability of subsequent lithium batteries. While this technical solution can achieve quantitative electrolyte injection, the electrolyte inside the cell will stick and scrape when the needle is inserted into or removed from the cell. When multiple needles are injected at the same time, the droplets from adjacent needles will also splash onto the side of the needle. In addition, the lithium battery electrolyte itself has a high surface tension and strong fluidity, and it is very easy to be adsorbed on the surface of stainless steel or PTFE needles to form a liquid film. After long-term continuous operation, the liquid film dries and generates white lithium salt crystals with strong adhesion, which in turn causes a decrease in injection accuracy and cell appearance contamination. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vacuum electrolyte filling machine for lithium battery processing, comprising a worktable, a transmission component fixedly connected to the inner side of the worktable, a feeding component slidably connected to the inner side of the worktable, the inner side of the feeding component being fixedly connected to the output end of the transmission component, a bracket fixedly connected to the top of the worktable, an filling component fixedly connected to the top of the bracket, and a contact component fixedly connected to the inner side of the bracket. The contact component includes a connecting tube, the side of which is fixedly connected to the inner side of the support. One end of the connecting tube is fixedly connected to a contact shell, which is concentrically arranged with the injection needle tube in the injection component. The side of the contact shell is fixedly connected to the inner side of the support. The other end of the connecting tube is fixedly connected to a collecting mechanism. A slotted plate is fixedly connected to the inner side of the contact shell, and a guide plate is fixedly connected to the inner side of the slotted plate. Contact shafts are slidably connected to both sides of the guide plate. The end of the contact shaft away from the scraper is slidably connected to the inner side of the guide plate. A scraper is fixedly connected to one end of the contact shaft. The side of the scraper is slidably connected to the inner side of the guide plate. A first spring is sleeved on the contact shaft in the middle. One end of the first spring is fixedly connected to the scraper, and the other end of the first spring is fixedly connected to the inner side of the guide plate. Furthermore, the collection mechanism includes a collection box, the bottom of which is fixedly connected to the top of the support, a suction mechanism fixedly connected to the top of the collection box, the output end of which is fixedly connected to the end of the connecting pipe away from the contact shell, a mesh plate fixedly connected to the inside of the collection box, an inclined plate provided on the inside of the collection box, the side of which is fixedly connected to the inside of the collection box, a guide block fixedly connected to the top of the inclined plate, a connecting shell fixedly connected to the other side of the top of the inclined plate, a driving component fixedly connected to the inside of the connecting shell, a cleaning mechanism fixedly connected to the output end of the driving component, the bottom of the cleaning mechanism contacting the top of the inclined plate, and a blocking mechanism fixedly connected to the side of the top of the inclined plate near the connecting shell. Furthermore, the cleaning mechanism includes a cleaning sleeve, the side of which is fixedly connected to the output end of the drive component, a cleaning plate is slidably connected to the inner side of the cleaning sleeve, the bottom of the cleaning plate contacts the top of the inclined plate, connecting shafts are fixedly connected to both sides of the top of the cleaning plate, the top of the connecting shafts is slidably connected to the inner side of the cleaning sleeve, a third spring is sleeved on the connecting shaft, the top of the third spring is fixedly connected to the inner side of the cleaning sleeve, and the bottom of the third spring is fixedly connected to the top of the cleaning plate. Furthermore, the blocking mechanism includes a blocking plate, the side of which is slidably connected to the inner side of the inclined plate, and a sliding rod fixedly connected to both sides of the blocking plate. The top of the sliding rod is slidably connected to the bottom of the inclined plate, and a second spring is sleeved on the sliding rod. The top of the second spring is fixedly connected to the bottom of the inclined plate, and the bottom of the second spring is fixedly connected to the side of the blocking plate.

[0005] This invention provides a vacuum electrolyte filling machine for lithium battery processing. It has the following advantages: 1. The vacuum liquid injection machine for electrolyte filling in lithium battery processing has a scraper that forms an elastic floating structure based on the contact shaft, the first spring and the arc-shaped guide plate. It can closely fit the side contour of the injection needle and scrape off waste liquid and impurities without dead corners. At the same time, it avoids rigid contact that scratches the needle. The inner side of the guide plate adopts an arc design, which can guide and collect the scraped waste liquid in a directional manner to avoid the waste liquid splashing randomly. The structure reduces the waste liquid residue and crystal accumulation. The scraped waste liquid can be quickly sucked into the collection mechanism by negative pressure through the slot plate and connecting pipe.

[0006] 2. The vacuum liquid injection machine for electrolyte filling in lithium battery processing relies on the negative pressure suction generated by the suction mechanism to quickly and tightly transport the waste liquid and impurities scraped off by the scraper to the collection box. The waste liquid, dry solid liquid film and solid impurities are separated by the inclined plate and the screen plate, which separates the crystallized and dried impurities in the waste liquid, which is convenient for the subsequent classification and disposal of waste liquid.

[0007] 3. The vacuum liquid filling machine for electrolyte filling in lithium battery processing uses a third spring to achieve elastic clamping of the cleaning plate, which is always in close contact with the top surface of the inclined plate. It can scrape off the dried liquid film, crystallized impurities and other attachments on the plate, avoiding the accumulation of impurities. The inclined plate's slope design can automatically guide impurities to gather at the lower end, preventing impurities from scattering and greatly reducing the difficulty of cleaning. The guide block adopts a slope structure, which can guide impurities to gather, making the cleaning plate cleaning work easier and solving the problem of impurities not being cleaned properly at the edges and corners of the inclined plate.

[0008] 4. The vacuum filling machine for electrolyte filling in lithium battery processing has a baffle plate with a top sloping structure. The cleaning plate can sink smoothly when squeezed, and the automatic reset is achieved with the help of the slide rod and the second spring. The impurities on the inclined plate are pushed into the connecting shell for centralized collection, preventing impurities from remaining in the collection box. The second spring provides a stable reset force for the baffle plate. The channel can be automatically closed after use to prevent impurities from flowing back and overflowing. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the vacuum liquid injection machine for electrolyte filling in lithium battery processing according to the present invention; Figure 2 This is an axonometric view of the present invention; Figure 3This is a schematic diagram of the structure of the bracket of the present invention; Figure 4 This is a schematic diagram of the contact component of the present invention; Figure 5 This is a schematic diagram of the structure of the guide plate of the present invention; Figure 6 This is a schematic diagram of the scraper structure of the present invention; Figure 7 This is a schematic diagram of the collection mechanism of the present invention; Figure 8 This is a schematic diagram of the inclined plate of the present invention; Figure 9 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 10 This is a schematic diagram of the blocking mechanism of the present invention.

[0010] In the diagram: 1. Workbench; 2. Transmission component; 3. Feeding component; 4. Support; 5. Liquid injection component; 6. Contact component; 61. Connecting pipe; 62. Contact housing; 63. Collection mechanism; 631. Collection box; 632. Suction mechanism; 633. Mesh plate; 634. Inclined plate; 635. Guide block; 636. Connecting housing; 637. Driving component; 638. Blocking mechanism; 6381. Blocking plate; 6382. Slide rod; 6383. Second spring; 639. Cleaning mechanism; 6391. Cleaning sleeve; 6392. Cleaning plate; 6393. Connecting shaft; 6394. Third spring; 65. Groove plate; 66. Guide plate; 67. Scraper; 68. Contact shaft; 69. First spring. Detailed Implementation

[0011] Please see Figures 1-3 The present invention provides a vacuum liquid injection machine for electrolyte filling in lithium battery processing, including a worktable 1, a transmission component 2 fixedly connected to the inner side of the worktable 1, a feeding component 3 slidably connected to the inner side of the worktable 1, the inner side of the feeding component 3 being fixedly connected to the output end of the transmission component 2, a support 4 fixedly connected to the top of the worktable 1, a liquid injection component 5 fixedly connected to the top of the support 4, and a contact component 6 fixedly connected to the inner side of the support 4. The output end of the transmission component 2 drives the feeding component 3 to transport the lithium battery cell to be injected to the injection station and complete the precision positioning and clamping. The equipment then activates the vacuum system to simultaneously evacuate the liquid injection chamber and the inside of the battery cell, expelling the air between the electrode and the diaphragm, thus maintaining a stable negative pressure environment inside the chamber. Once the vacuum level reaches the set value, the electrolyte injection component 5 injects electrolyte into the battery cell according to the preset injection volume. Under the action of negative pressure difference, the electrolyte quickly penetrates into the gap between the electrode and the diaphragm; After the electrolyte injection is completed, the cell enters a vacuum settling stage to allow the electrolyte to fully wet the internal structure of the cell and further reduce residual air bubbles. After the soaking is completed, the equipment is gradually filled with nitrogen to break the vacuum and return to normal pressure. Then the clamp positioning is released, and the battery cells that have completed the liquid injection are automatically unloaded and flow into the next process. The entire process is completed in a closed environment to ensure injection accuracy and wetting effect, while preventing electrolyte evaporation and leakage. After the injection needle in the injection component 5 completes the injection operation, it moves upward to reset. When it passes the contact component 6, the contact component 6 scrapes off and cleans the residual liquid adhering to the outer wall of the needle, and scrapes off and collects the waste liquid. Example 1, please refer to Figures 4-6 The present invention also includes a contact component 6, the side of the scraper 67 is slidably connected to the inner side of the guide plate 66, and the injection needle in the injection component 5 moves upward after completing the electrolyte injection operation, and in the process, it forms a close contact with the two scrapers 67 symmetrically arranged on the inner side of the guide plate 66. A guide plate 66 is fixedly connected to the inner side of the slot plate 65. A contact shaft 68 is slidably connected to both sides of the guide plate 66. The end of the contact shaft 68 away from the scraper 67 is slidably connected to the inner side of the guide plate 66. A scraper 67 is fixedly connected to one end of the contact shaft 68. When the scraper 67 moves on the needle head, it scrapes and cleans the waste liquid and impurities attached to the outer wall and side of the needle head. A first spring 69 is sleeved on the central contact shaft 68. One end of the first spring 69 is fixedly connected to the scraper 67, and the other end of the first spring 69 is fixedly connected to the inner side of the guide plate 66. The scraper 67 slides on the inner side of the arc-shaped guide plate 66 through the contact shaft 68, while squeezing the first spring 69 sleeved on the contact shaft 68 to achieve elastic and close scraping. One end of the connecting pipe 61 is fixedly connected to a contact housing 62. The contact housing 62 is concentrically arranged with the injection needle tube in the injection component 5. A slot plate 65 is fixedly connected to the inner side of the contact housing 62. The scraped waste liquid is guided and converged to the slot plate 65 through the inner arc surface of the arc guide plate 66. At this time, the collection mechanism 63 is opened. Under the action of negative pressure, the waste liquid is sucked into the connecting pipe 61 through the slot plate 65 on the inner side of the contact housing 62 and finally transported to the collection mechanism 63 to complete centralized recycling, which provides convenience for subsequent waste liquid treatment. Please see Figures 7-8 It also includes a collection mechanism 63, and the injection needle of the injection component 5 moves upward to reset after completing the electrolyte injection operation, and the waste liquid attached to its outer wall moves upward synchronously with the needle. A suction mechanism 632 is fixedly connected to the top of the collection box 631. The output end of the suction mechanism 632 is fixedly connected to the end of the connecting pipe 61 away from the contact shell 62. At this time, the suction mechanism 632 is activated and generates negative pressure suction. The waste liquid scraped off by the scraper 67 enters the inside of the collection shell through the connecting pipe 61 under the action of suction, completing the preliminary filtration and separation of the waste liquid and the liquid film formed by the solidification of the waste liquid. A mesh plate 633 is fixedly connected to the inner side of the collection box 631, and an inclined plate 634 is provided on the inner side of the collection box 631. The side of the inclined plate 634 is fixedly connected to the inner side of the collection box 631. The waste liquid entering the collection box 631 flows through the inclined plate 634 and the mesh plate 633 in sequence to achieve secondary separation and filtration of solid and liquid impurities. A drive unit 637 is fixedly connected to the inner side of the connecting housing 636. A cleaning mechanism 639 is fixedly connected to the output end of the drive unit 637. The bottom of the cleaning mechanism 639 contacts the top of the inclined plate 634. After the filtration operation is completed, the drive unit 637, which is installed above the inclined plate 634 and inside the connecting housing 636, is activated. The output end of the drive unit 637 drives the cleaning mechanism 639 to reciprocate and move on the surface of the inclined plate 634 to continuously clean the impurities and dried liquid film remaining on the top of the inclined plate 634. Please see Figure 9 It also includes a cleaning mechanism 639. The top of the inclined plate 634 is fixedly connected to a guide block 635. Before the filtration work is carried out, the drive unit 637 is turned on, and its output end drives the cleaning sleeve 6391 to disengage from the inner side of the connecting shell 636 until it contacts the slope of the guide block 635. The inclined plate 634 is inclinedly arranged inside the collection box 631, which can guide the impurities intercepted by the cleaning plate 6392, so that the impurities converge along the slope to the lower end of the inclined plate 634 and the guide block 635 on one side. The side of the cleaning sleeve 6391 is fixedly connected to the output end of the drive component 637. The cleaning plate 6392 is slidably connected to the inner side of the cleaning sleeve 6391. After the inclined plate 634 intercepts the solid impurities in the waste liquid, after the drive component 637 is started, its output end drives the cleaning sleeve 6391 to reset and move towards the connecting shell 636 at the top of the inclined plate 634. The bottom of the cleaning plate 6392 contacts the top of the inclined plate 634. Both sides of the top of the cleaning plate 6392 are fixedly connected to the connecting shaft 6393. The top of the connecting shaft 6393 is slidably connected to the inner side of the cleaning sleeve 6391. Since the other side of the inclined plate 634 is provided with a guide block 635 with a slope, when the cleaning plate 6392 slides and repositions along the slope of the guide block 635 with the cleaning sleeve 6391, the guiding action of the slope guide block 635 can avoid the appearance of cleaning dead corners on the inclined plate 634. This ensures that the cleaning plate 6392 can completely drive the accumulated impurities to reset and transport and collect them during the process of moving along the slope of the guide block 635, and finally send the impurities into the connecting shell 636 for centralized collection. A third spring 6394 is sleeved on the connecting shaft 6393. The top of the third spring 6394 is fixedly connected to the inner side of the cleaning sleeve 6391, and the bottom of the third spring 6394 is fixedly connected to the top of the cleaning plate 6392. The cleaning sleeve 6391, through the connecting shaft 6393 and the third spring 6394 sleeved on the shaft, ensures that the cleaning plate 6392 always elastically fits the top surface of the inclined plate 634, thereby achieving follow-up contact cleaning. Please see Figure 10 It also includes a blocking mechanism 638, and the output end of the driving component 637 drives the cleaning plate 6392 through the cleaning sleeve 6391 to reset and move the collected impurities along the inclined plate 634. The side of the baffle 6381 is slidably connected to the inside of the inclined plate 634. During the movement, the cleaning plate 6392 contacts the top inclined surface of the baffle 6381 inside the inclined plate 634 and generates pressure, causing the baffle 6381 to move downward. Both sides of the baffle plate 6381 are fixedly connected to slide rods 6382. The top of the slide rods 6382 is slidably connected to the bottom of the inclined plate 634. A second spring 6383 is sleeved on the slide rods 6382. The top of the second spring 6383 is fixedly connected to the bottom of the inclined plate 634, and the bottom of the second spring 6383 is fixedly connected to the side of the baffle plate 6381. The baffle plate 6381 synchronously drives the bottom slide rod 6382 to move down, compressing the second spring 6383 sleeved on the slide rod 6382. As the baffle plate 6381 sinks to form a material passage, the cleaning plate 6392 pushes the impurities through the clearance channel of the baffle plate 6381 into the interior of the connecting shell 636 for centralized collection, thus realizing the unified collection and subsequent processing of impurities.

[0012] Specific workflow: The output end of the transmission component 2 drives the feeding component 3 to transport the lithium battery cell to be injected to the injection station and complete the precision positioning and clamping. The equipment then activates the vacuum system to simultaneously evacuate the liquid injection chamber and the inside of the battery cell, expelling the air between the electrode and the diaphragm, thus maintaining a stable negative pressure environment inside the chamber. Once the vacuum level reaches the set value, the electrolyte injection component 5 injects electrolyte into the battery cell according to the preset injection volume. Under the action of negative pressure difference, the electrolyte quickly penetrates into the gap between the electrode and the diaphragm; After the electrolyte injection is completed, the cell enters a vacuum settling stage to allow the electrolyte to fully wet the internal structure of the cell and further reduce residual air bubbles. After the soaking is completed, the equipment is gradually filled with nitrogen to break the vacuum and return to normal pressure. Then the clamp positioning is released, and the battery cells that have completed the liquid injection are automatically unloaded and flow into the next process. The entire process is completed in a closed environment to ensure injection accuracy and wetting effect, while preventing electrolyte evaporation and leakage. After the injection needle in the injection component 5 completes the injection operation, it moves upward to reset. When it passes the contact component 6, the contact component 6 scrapes off and cleans the residual liquid adhering to the outer wall of the needle, and scrapes off and collects the waste liquid. After completing the electrolyte injection operation, the injection needle in the injection component 5 moves upward to reset and during the process, it forms a close contact with the two scrapers 67 symmetrically arranged inside the guide plate 66. When the scraper 67 moves on the needle head, it scrapes and cleans the waste liquid and impurities attached to the outer wall and sides of the needle head. The scraper 67 slides inside the arc-shaped guide plate 66 via the contact shaft 68, while simultaneously squeezing the first spring 69 sleeved on the contact shaft 68 to achieve elastic and adhesive scraping. The scraped waste liquid is guided and converged by the inner arc surface of the arc-shaped guide plate 66 and flows towards the slot plate 65. At this time, the collection mechanism 63 is opened. Under the action of negative pressure, the waste liquid is sucked into the connecting pipe 61 through the slot plate 65 that contacts the inner side of the outer shell 62, and finally transported to the collection mechanism 63 to complete centralized recycling, which provides convenience for subsequent waste liquid treatment. After the injection needle of the injection component 5 completes the electrolyte injection operation, it moves upward to reset and the waste liquid attached to its outer wall moves upward synchronously with the needle. At this time, the suction mechanism 632 is activated and generates negative pressure suction. The waste liquid scraped off by the scraper 67 enters the collection shell through the connecting pipe 61 under the action of suction, completing the preliminary filtration and separation of the waste liquid and the liquid film formed by the dried waste liquid. The waste liquid entering the collection box 631 flows sequentially through the inclined plate 634 and the screen plate 633 to achieve secondary separation and filtration of solid and liquid impurities. After the filtration operation is completed, the drive unit 637, which is installed above the inclined plate 634 and connected to the inside of the housing 636, is activated. The output end of the drive unit 637 drives the cleaning mechanism 639 to reciprocate and move on the surface of the inclined plate 634 to continuously clean the impurities and dried liquid film remaining on the top of the inclined plate 634. Before filtration, the drive unit 637 is turned on, and its output end drives the cleaning sleeve 6391 to disengage from the inner side of the connecting housing 636 until it contacts the slope of the guide block 635. The inclined plate 634 is inclinedly arranged inside the collection box 631, which can guide the impurities intercepted by the cleaning plate 6392, so that the impurities converge along the slope to the lower end of the inclined plate 634 and the guide block 635 on one side. After the inclined plate 634 intercepts solid impurities in the waste liquid, the drive unit 637 is activated, and its output end drives the cleaning sleeve 6391 to move back to the connecting housing 636 at the top of the inclined plate 634. Since the other side of the inclined plate 634 is provided with a guide block 635 with a slope, when the cleaning plate 6392 slides and repositions along the cleaning sleeve 6391 through the slope of the guide block 635, the guiding action of the slope guide block 635 can avoid cleaning dead corners on the inclined plate 634, ensuring that the cleaning plate 6392 can completely drive the accumulated impurities to reposition and transport and collect them during the process of moving along the slope of the guide block 635, and finally send the impurities into the connecting shell 636 to complete centralized collection; The cleaning sleeve 6391, through the connecting shaft 6393 and the third spring 6394 sleeved on the shaft, ensures that the cleaning plate 6392 always elastically fits the top surface of the inclined plate 634, thereby achieving follow-up contact cleaning; The output end of the drive unit 637 drives the cleaning plate 6392 through the cleaning sleeve 6391, which resets and moves the collected impurities along the inclined plate 634. During the movement, the cleaning plate 6392 comes into contact with the top inclined surface of the baffle 6381 inside the inclined plate 634 and generates pressure, causing the baffle 6381 to move downward. The baffle 6381 synchronously drives the bottom slide bar 6382 to move down, compressing the second spring 6383 sleeved on the slide bar 6382; As the baffle plate 6381 sinks to form a material passage, the cleaning plate 6392 pushes the impurities through the clearance channel of the baffle plate 6381 into the interior of the connecting shell 636 for centralized collection, thus realizing the unified collection and subsequent processing of impurities.

[0013] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vacuum electrolyte filling machine for lithium battery processing, characterized in that, The system includes a workbench (1), a transmission component (2) fixedly connected to the inner side of the workbench (1), a feeding component (3) slidably connected to the inner side of the workbench (1), the inner side of the feeding component (3) being fixedly connected to the output end of the transmission component (2), a bracket (4) fixedly connected to the top of the workbench (1), a liquid injection component (5) fixedly connected to the top of the bracket (4), and a contact component (6) fixedly connected to the inner side of the bracket (4). The contact component (6) includes a connecting tube (61), one end of which is fixedly connected to a contact housing (62). The side of the contact housing (62) is fixedly connected to the inside of the bracket (4). The other end of the connecting tube (61) is fixedly connected to a collecting mechanism (63). The inside of the contact housing (62) is fixedly connected to a slotted plate (65). The inside of the slotted plate (65) is fixedly connected to a guide plate (66). Both sides of the guide plate (66) are slidably connected to contact shafts (68). One end of the contact shaft (68) is fixedly connected to a scraper (67). A first spring (69) is sleeved on the contact shaft (68) located in the middle.

2. The vacuum electrolyte filling machine for lithium battery processing according to claim 1, characterized in that: The contact shell (62) is concentrically arranged with the injection needle tube in the injection component (5), the side of the connecting tube (61) is fixedly connected to the inner side of the bracket (4), and the side of the scraper (67) is slidably connected to the inner side of the guide plate (66).

3. The vacuum electrolyte filling machine for lithium battery processing according to claim 2, characterized in that: The end of the contact shaft (68) away from the scraper (67) is slidably connected to the inner side of the guide plate (66), one end of the first spring (69) is fixedly connected to the scraper (67), and the other end of the first spring (69) is fixedly connected to the inner side of the guide plate (66).

4. The vacuum electrolyte filling machine for lithium battery processing according to claim 1, characterized in that: The collection mechanism (63) includes a collection box (631), a suction mechanism (632) is fixedly connected to the top of the collection box (631), a mesh plate (633) is fixedly connected to the inner side of the collection box (631), an inclined plate (634) is provided on the inner side of the collection box (631), a guide block (635) is fixedly connected to the top of the inclined plate (634), a connecting shell (636) is fixedly connected to the other side of the top of the inclined plate (634), a driving component (637) is fixedly connected to the inner side of the connecting shell (636), a cleaning mechanism (639) is fixedly connected to the output end of the driving component (637), the bottom of the cleaning mechanism (639) is in contact with the top of the inclined plate (634), and a blocking mechanism (638) is fixedly connected to the side of the top of the inclined plate (634) near the connecting shell (636).

5. A vacuum electrolyte filling machine for lithium battery processing according to claim 4, characterized in that: The bottom of the collection box (631) is fixedly connected to the top of the bracket (4), the output end of the suction mechanism (632) is fixedly connected to the end of the connecting pipe (61) away from the contact shell (62), and the side of the inclined plate (634) is fixedly connected to the inside of the collection box (631).

6. A vacuum electrolyte filling machine for lithium battery processing according to claim 4, characterized in that: The cleaning mechanism (639) includes a cleaning sleeve (6391), the side of which is fixedly connected to the output end of the drive component (637), and a cleaning plate (6392) is slidably connected to the inner side of the cleaning sleeve (6391). A connecting shaft (6393) is fixedly connected to both sides of the top of the cleaning plate (6392), and a third spring (6394) is sleeved on the connecting shaft (6393).

7. A vacuum electrolyte filling machine for lithium battery processing according to claim 6, characterized in that: The top of the connecting shaft (6393) is slidably connected to the inner side of the cleaning sleeve (6391), the bottom of the cleaning plate (6392) is in contact with the top of the inclined plate (634), the top of the third spring (6394) is fixedly connected to the inner side of the cleaning sleeve (6391), and the bottom of the third spring (6394) is fixedly connected to the top of the cleaning plate (6392).

8. A vacuum electrolyte filling machine for lithium battery processing according to claim 4, characterized in that: The blocking mechanism (638) includes a blocking plate (6381), and slide rods (6382) are fixedly connected to both sides of the blocking plate (6381). The top of the slide rods (6382) is slidably connected to the bottom of the inclined plate (634), and a second spring (6383) is sleeved on the slide rods (6382).

9. A vacuum electrolyte filling machine for lithium battery processing according to claim 8, characterized in that: The side of the stop plate (6381) is slidably connected to the inside of the inclined plate (634), the top of the second spring (6383) is fixedly connected to the bottom of the inclined plate (634), and the bottom of the second spring (6383) is fixedly connected to the side of the stop plate (6381).

Images