Cleaning device and method for battery cell liquid injection port

Abstract

The present invention discloses a cleaning device and method for a battery cell liquid injection port, relates to the field of battery cell manufacturing, and solves the problems of inconsistent manual cleaning effects and low cleaning efficiency of the battery cell liquid injection port, comprising: a conveying platform and a collaborative robot arm, wherein a brush is provided at the end of the collaborative robot arm, a baffle is provided above the conveying platform, and electric telescopic rods are installed at both ends of the baffle; and further comprises: a spray brush mechanism for air showering and drying the battery cell liquid injection port, the spray brush mechanism is installed on the outside of the brush, the spray brush mechanism comprises a reciprocating motor frame installed on the top of the brush, and the reciprocating motor frame is installed at the end of the collaborative robot arm, and the reciprocating motor frame can make the brush move back and forth; the present invention can spray a cleaning solution into the battery cell liquid injection port through the spray brush mechanism, and adopts a reciprocating scraping brush method to enable the brush to quickly clean the battery cell liquid injection port, and then air shower and dry the cleaned battery cell liquid injection port, thereby improving cleaning efficiency and reducing labor intensity and production costs.

Description

Technical Field

[0001] The present invention relates to the field of battery core manufacturing, and in particular to a cleaning device and method for a battery core liquid injection port. Background Art

[0002] The battery cell is the core component of the battery, responsible for storing and releasing electrical energy. It is the key component for electrochemical reactions in the battery. It is composed of positive electrode, negative electrode, electrolyte, diaphragm and other materials. The outside is usually protected by packaging, but the battery cell itself does not include peripheral components such as the battery casing and protection circuit.

[0003] Cleaning the filling port of the battery cell is a key step in the battery manufacturing process. The filling port is the channel for injecting electrolyte into the battery cell. If there is electrolyte residue or other impurities around the filling port, it may affect the normal operation of the battery cell and even cause safety problems. The main purpose is to ensure the performance, safety and yield of the battery cell. Currently, the most common method of cleaning the filling port in lithium battery production is to manually use a brush dipped in DMC to clean the filling port. Electrolyte residue will cause explosive points, explosive welding and other adverse phenomena when welding the sealing pins, affecting the yield and safety of the battery. Manual cleaning of the filling port may usually lead to inconsistent cleaning results due to differences in skills and experience of different operators. In addition, manual cleaning takes a long time, easily fatigues the personnel, and is costly. Summary of the Invention

[0004] The object of the present invention is to provide a cleaning device and method for a battery cell liquid injection port, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The cleaning device for the battery cell liquid injection port comprises: a conveying platform and a collaborative robot arm arranged on the outside of the conveying platform, a brush is arranged at the end of the collaborative robot arm, a barrier rod is arranged above the conveying platform, and an electric telescopic rod is installed between the two ends of the barrier rod and the outside of the conveying platform; it also comprises: a spray brush mechanism for air-drying the battery cell liquid injection port, the spray brush mechanism is installed on the outside of the brush, the spray brush mechanism comprises a reciprocating motor frame installed on the top of the brush, and the reciprocating motor frame is installed at the end of the collaborative robot arm, The reciprocating motor frame can make the brush move back and forth; the brush cleaning mechanism is used to clean impurities on the brush, and the brush cleaning mechanism is installed on the outside of the conveying platform. The brush cleaning mechanism includes a cleaning box arranged above the conveying platform, and the brush can be inserted into the cleaning box for cleaning; the material removal mechanism is used to improve the discharge efficiency of impurities in the cleaning box. The material removal mechanism is installed inside the cleaning box, and the material removal mechanism includes a sewage box arranged on the outside of the cleaning box, and the sewage box is used to store and discharge sewage in the cleaning box.

[0007] Preferably, the spray brushing mechanism also includes a plurality of spray valves fixedly installed at equal intervals on the outside of the reciprocating motor frame, a battery cell strip is fixedly installed on the outside of the battery cell strip, a plurality of equidistantly distributed air knives are fixedly installed on the outside of the battery cell strip, an air storage tank is provided at the bottom of the conveying platform, a pressure barrel is provided on the outside of the air storage tank, the pressure barrel is connected to the spray valve through a hose, and a plurality of equidistantly distributed guide strips are installed on the top of the conveying platform.

[0008] Preferably, the cleaning mechanism also includes a mounting base fixedly mounted on the bottom of the cleaning box, a mounting bracket fixedly mounted on the bottom of the mounting base, a lifting cylinder fixedly mounted on the outside of the mounting bracket, a flip cylinder fixedly mounted on the top of the lifting cylinder, a sealing cover fixedly mounted on the top of the flip cylinder, a cleaning grid frame is provided on the inside of the cleaning box, an insert is slidably mounted on the inside of the cleaning grid frame, the insert is fixedly mounted on the top of the mounting base, and a space for the cleaning is opened on the top of the mounting base. The grid frame is limited and inserted into a slot, and a plurality of overflow holes equidistantly distributed are provided on the outside of the cleaning grid frame. A water injection valve is fixedly installed on the outside of the cleaning box, and a water injection hole is provided on the outside of the cleaning grid frame, and the height of the water injection hole is less than the height of the overflow hole. A plurality of equidistantly distributed support rods are rotatably installed on both sides of the cleaning grid frame, and a cavity for inserting the support rod is provided on the inner side of the mounting base plate, and a mounting block is fixedly installed on the bottom of the support rod, and a spring is provided between the bottom of the mounting block and the inner side of the cavity.

[0009] The top end of the support leg is connected with the support frame, and the support frame is connected with the support frame of the support leg. The support leg is connected with the support frame of the support leg.

[0010] Preferably, a stopper is installed on the top of the guide bar, and the stopper is located on the outside of the stop rod.

[0011] Preferably, a rubber gasket is fixedly installed on one end of the water injection valve close to the cleaning grid frame.

[0012] Preferably, an aeration stone is fixedly installed on the top of the rotating drum.

[0013] Preferably, a positioning frame is rotatably mounted on the bottom end of the rotating drum, and the positioning frame is fixedly mounted on the bottom of the mounting base plate.

[0014] Preferably, a guide rod for limiting the sliding of the pressure plate is fixedly installed in the installation cavity of the installation base plate.

[0015] A cleaning method, the method steps are as follows:

[0016] S1: In the loading stage, multiple battery cells are sequentially loaded into the gaps between adjacent guide bars, so that the conveying platform conveys the battery cells to the outside of the barrier rod, and the spray valve sprays the solution in the pressure barrel into the battery cell filling port;

[0017] S2: During the cleaning phase, the reciprocating motor frame drives the brush to move back and forth along the battery cell injection port to clean the impurities inside the battery cell injection port, and the air knife blows the battery cell injection port dry;

[0018] S3: During the cleaning and brushing stage, the conveying platform delivers the cleaned battery cells out of the container, and the collaborative robot arm inserts the brush into the cleaning box, allowing the brush to soak and scrape in the cleaning grid frame;

[0019] S4: In the sewage discharge stage, the brush presses down the cleaning grid frame, causing the pressure plate to compress the elastic airbag, injecting air into the cleaning grid frame, and causing the fan blades on the rotating drum to rotate, so that the impurities are mixed with the impurities in the cleaning grid frame and discharged into the sewage discharge box.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention can spray cleaning solution into the battery cell injection port through the spray brush mechanism, and adopts a reciprocating scraping brush method to enable the brush to quickly clean the battery cell injection port, and then air-dry the cleaned battery cell injection port, thereby improving cleaning efficiency and reducing labor intensity and production costs.

[0022] The present invention uses a cleaning mechanism, and a cooperative robot arm can insert the brush into the cleaning grid frame to soak and scrape the brush to maintain the cleanliness of the brush. When the brush presses down the cleaning grid frame, the insert block can discharge the sewage in the cleaning grid frame, which is convenient for re-filling the cleaning grid frame and preventing impurities from remaining in the cleaning grid frame, thereby ensuring the cleaning effect of the brush each time, thereby facilitating the continuous use of the brush and improving the durability of the brush.

[0023] The present invention uses a material removal mechanism to inject air into the cleaning grid frame during the downward movement of the cleaning grid frame, and to make the fan blades rotate in the water of the cleaning grid frame, so that the impurities discharged from the brush are quickly mixed with the water, and the sewage in the cleaning grid frame is made to flow, which is convenient for the sewage to be discharged from the overflow hole of the cleaning grid frame, thereby achieving the effect of rapid sewage discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of area A;

[0026] Figure 3 Schematic diagram of the spray valve and air knife structure in the present invention;

[0027] Figure 4 This is a schematic diagram of the cover plate and mounting bracket structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the water injection valve and cleaning box structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the plug block and the cleaning grid frame in the present invention;

[0030] Figure 7 This is a schematic diagram of the installation base plate and the sewage box structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the pressure plate and elastic airbag of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the prismatic inserting rod and the fixed sleeve in the present invention.

[0033] Figure: 1. Conveying platform; 2. Collaborative robot arm; 3. Brush; 4. Stop bar; 5. Electric telescopic rod; 6. Reciprocating motor frame; 7. Cleaning box; 8. Drain box; 9. Spray valve; 10. Cell pressure strip; 11. Air knife; 12. Gas tank; 13. Pressure barrel; 14. Guide bar; 15. Mounting base; 16. Mounting bracket; 17. Lifting cylinder; 18. Flipping cylinder; 19. Sealing cover; 20. Cleaning Grid frame; 21. Insert block; 22. Support rod; 23. Mounting block; 24. Spring; 25. Mounting box; 26. Elastic airbag; 27. Pressure plate; 28. Rotating drum; 29. Prismatic insert rod; 30. Positioning cylinder; 31. Synchronous belt; 32. Fixed sleeve; 33. Spiral strip; 34. Fan blade; 35. Stop block; 36. Rubber gasket; 37. Aeration stone; 38. Positioning frame; 39. Guide rod; 40. Water injection valve. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1-8 The cleaning device for the liquid injection port of the battery cell shown in the figure includes a conveying platform 1 and a collaborative robot arm 2 arranged on the outside of the conveying platform 1. A brush 3 is provided at the end of the collaborative robot arm 2. The collaborative robot arm 2 cleans the liquid injection port of the battery cell on the conveying platform 1 through the brush 3. A baffle 4 is provided above the conveying platform 1. An electric telescopic rod 5 is installed between the two ends of the baffle 4 and the outside of the conveying platform 1. The baffle 4 is raised and lowered by the electric telescopic rod 5, so that the baffle 4 can block the movement of the battery cell, making it convenient for the brush 3 to clean the liquid injection port of the battery cell; it also includes: a spray brush mechanism for air showering and drying the liquid injection port of the battery cell, and the spray brush mechanism is installed on the outside of the brush 3.

[0036] The spray brush mechanism includes a reciprocating motor frame 6 installed on the top of the brush 3, and the reciprocating motor frame 6 is installed on the end of the collaborative robot arm 2. The reciprocating motor frame 6 can make the brush 3 move back and forth. The spray brush mechanism also includes a plurality of spray valves 9 fixedly installed at equal distances on the outside of the reciprocating motor frame 6, so that the collaborative robot arm 2 first sprays and humidifies the battery cell injection port through the spray valve 9, which is convenient for the brush 3 to clean the battery cell injection port. A battery cell strip 10 is fixedly installed on the outside of the battery cell strip 10. A plurality of air knives 11 distributed at equal distances are fixedly installed on the outside of the conveying platform 1. A gas tank 12 is provided at the bottom of the conveying platform 1. The gas tank 12 can spray the air The knife 11 supplies air, so that the wind knife 11 blows the liquid injection port of the battery cell cleaned by the brush 3 to dry it. A pressure barrel 13 is provided on the outside of the gas storage tank 12. The pressure barrel 13 is connected to the spray valve 9 through a hose, so that the pressure barrel 13 transports the cleaning solution into the spray valve 9. A plurality of equally distributed guide bars 14 are installed on the top of the conveying platform 1. The gaps between the plurality of guide bars 14 separate the plurality of conveyed battery cells to prevent collisions. A block 35 is installed on the top of the guide bar 14, and the block 35 is located on the outside of the baffle 4, so that the block 35 provides support for the outside of the battery cell, which is convenient for the brush 3 to clean the liquid injection port of the battery cell back and forth.

[0037] Example 2: Please refer to Figure 3-Figure 6, this embodiment further explains Example 1. The cleaning mechanism in the figure includes a cleaning box 7 arranged above the conveying platform 1. The brush 3 can be inserted into the cleaning box 7 for cleaning. The cleaning mechanism also includes a mounting base 15 fixedly mounted on the bottom of the cleaning box 7. The bottom of the mounting base 15 is fixedly mounted with a mounting bracket 16. The outer side of the mounting bracket 16 is fixedly mounted with a lifting cylinder 17. The top of the lifting cylinder 17 is fixedly mounted with a flip cylinder 18. The top of the flip cylinder 18 is fixedly mounted with a sealing cover 19. The lifting cylinder 17 can cooperate with the flip cylinder 18 to push the sealing The cover 19 moves and contacts the top of the cleaning box 7 to realize the opening and closing of the cleaning box 7. A cleaning grid frame 20 is provided on the inner side of the cleaning box 7. A plug-in block 21 is slidably installed on the inner side of the cleaning grid frame 20. The plug-in block 21 is fixedly installed on the top of the mounting base 15, and a slot for limiting the insertion of the cleaning grid frame 20 is provided on the top of the mounting base 15. A plurality of overflow holes equidistantly distributed are provided on the outside of the cleaning grid frame 20. A water injection valve 40 is fixedly installed on the outside of the cleaning box 7. A water injection hole is provided on the outside of the cleaning grid frame 20, so that the water injection valve 40 can pass the water injection hole to fill the water. Water is injected into the cleaning grid frame 20, and each partition area is filled with water through the overflow hole, and the height of the water injection hole is smaller than the height of the overflow hole, so that when the brush 3 is inserted into the cleaning box 7, it can press the cleaning grid frame 20 downward along the inner side of the insert block 21, so that the water injection valve 40 is staggered with the overflow hole, and the water injection valve 40 is sealed by the cleaning grid frame 20. As the brush 3 moves back and forth, the brush 3 is cleaned, so that the insert block 21 pushes the water in the cleaning grid frame 20 into the overflow hole, and the sewage after cleaning can be discharged into the cleaning box 7 and discharged from the sewage box 8, and the cleaning grid frame A plurality of equally spaced support rods 22 are rotatably mounted on both sides of 20. A cavity for inserting the support rods 22 is opened on the inner side of the mounting base 15. A mounting block 23 is fixedly mounted on the bottom of the support rod 22. A spring 24 is provided between the bottom of the mounting block 23 and the inner side of the cavity, so that when the cleaning grid frame 20 moves downward, the spring 24 can be compressed, so that when the brush 3 is reset, the cleaning grid frame 20 can be automatically reset. A rubber gasket 36 is fixedly mounted on one end of the water injection valve 40 near the cleaning grid frame 20 to improve the sealing performance of the contact between the water injection valve 40 and the cleaning grid frame 20.

[0038] Example 3: Please refer to Figure 5-Figure 8, this embodiment is further explained for other embodiments. The material removal mechanism in the figure includes a sewage box 8 arranged on the outside of the cleaning box 7. The sewage box 8 is used to store and discharge the sewage in the cleaning box 7. The material removal mechanism also includes a mounting box 25 fixedly mounted in the mounting cavity of the mounting base 15. An elastic airbag 26 is fixedly mounted on the inner side of the mounting box 25. The elastic airbag 26 is docked with the outer side of the mounting box 25 through a one-way air inlet valve. A pressure plate 27 is rotatably mounted on the outer side of the mounting block 23. The pressure plate 27 is fixedly connected to the top of the elastic airbag 26. When the cleaning grid frame 20 moves downward, it can push the pressure plate 27 downward through the mounting block 23 on the support rod 22, so that the pressure plate 27 can contact the elastic airbag. The airbag 26 is compressed, and a rotating drum 28 is rotatably installed on the inner side of the plug block 21. The bottom end of the rotating drum 28 is connected to the elastic airbag 26 through a hose, and the top of the rotating drum 28 is a one-way exhaust valve structure, so that the elastic airbag 26 can inject air into the rotating drum 28 through the hose when compressed, and after the elastic airbag 26 is reset, it can inhale the outside air through the one-way air intake valve. A prismatic plug rod 29 is fixedly installed on the bottom of the mounting block 23, and a positioning cylinder 30 is rotatably installed on the bottom of the mounting box 25. The prismatic plug rod 29 is slidably installed on the inner side of the positioning cylinder 30, and a synchronous belt 31 is rotatably installed between the positioning cylinder 30 and the rotating drum 28. A fixed sleeve 32 is fixedly installed on the top of the mounting box 25. Two symmetrically distributed spiral strips 33 are fixedly installed on the inner side of the fixed sleeve 32, and a spiral groove that matches the spiral strip 33 is opened on the outer side of the support rod 22, so that when the support rod 22 moves, the spiral groove on the outer side can move along the outer side of the spiral strip 33, and the support rod 22 can be in a rotating state. The support rod 22 can drive the positioning cylinder 30 to rotate through the prismatic plug rod 29, so that the positioning cylinder 30 drives the rotating cylinder 28 to rotate through the synchronous belt 31. A plurality of fan blades 34 with a central symmetrical distribution are fixedly installed on the outer side of the rotating cylinder 28, so that the rotating cylinder 28 can cooperate with the air discharged from the rotating cylinder 28 through the fan blades 34 to improve the mixing efficiency of impurities and water, thereby improving the cleaning efficiency of the brush 3, and the rotating cylinder 28 An aeration stone 37 is fixedly installed on the top of the rotating drum 28, so that the rotating drum 28 injects air into the cleaning grid frame 20 through the aeration stone 37, thereby improving the mixing efficiency of impurities and water, facilitating the rapid removal of impurities in the brush 3, and making the sewage in the cleaning grid frame 20 flow, which is convenient for discharge into the sewage box 8 to prevent impurities from sinking to the bottom. A positioning frame 38 is rotatably installed on the bottom end of the rotating drum 28, and the positioning frame 38 is fixedly installed on the bottom of the mounting base 15 to improve the stability of the rotation of the rotating drum 28. A guide rod 39 for limiting the sliding of the pressure plate 27 is fixedly installed in the mounting cavity of the mounting base 15 to provide guidance and support for the movement of the pressure plate 27, so that the pressure plate 27 can smoothly press down the elastic airbag 26.

[0039] Working principle: First, the staff will load multiple battery cells into the gaps between multiple guide bars 14, so that the conveying platform 1 can convey the battery cells. The battery cells move above the spray valve 9, so that the cleaning solution in the pressure barrel 13 is discharged from the spray valve 9, and the spray valve 9 sprays the cleaning solution on the battery cell injection port. Then, the battery cells come into contact with the baffle 4, and the reciprocating motor frame 6 drives the brush 3 to move back and forth, so that the brush 3 cleans the battery cell injection port back and forth, and the air storage tank 12 delivers air to the wind knife 11, so that the wind knife 11 blows the battery cell injection port dry, and the electric telescopic rod 5 lifts the baffle 4, so that the conveying platform 1 can clean the battery cell injection port. The core is conveyed and discharged to complete the cleaning of the battery core. After the brush 3 has been used for a long time, the collaborative robot arm 2 inserts the brush 3 into the cleaning box 7, inserts the brush 3 into the cleaning grid frame 20, and makes the brush 3 move back and forth to achieve the soaking and scraping of the brush 3. Then, the brush 3 presses down the cleaning grid frame 20, so that the cleaning grid frame 20 moves downward along the outside of the insertion block 21. At the same time, the cleaning grid frame 20 pushes the support rod 22 to move downward, and the spiral groove on the support rod 22 can move along the outside of the spiral strip 33, so that the support rod 22 is in a rotating state, and the support rod 22 drives the prismatic insertion rod 29 to rotate through the mounting block 23. The prismatic inserting rod 29 moves downward along the inner side of the positioning cylinder 30, driving the positioning cylinder 30 to rotate. The positioning cylinder 30 drives the rotating cylinder 28 to rotate synchronously through the synchronous belt 31. The rotating cylinder 28 drives the fan blades 34 to rotate, stirring the water in the cleaning grid frame 20. At the same time, the mounting block 23 drives the pressure plate 27 to move downward, causing the pressure plate 27 to compress the elastic airbag 26. The elastic airbag 26 injects air into the rotating cylinder 28 through the hose, so that the air is discharged from the aeration stone 37 at the top of the rotating cylinder 28. The impurities in the cleaning grid frame 20 can be quickly mixed with the water along with the bubbles, and the water is stirred at the overflow hole and the inserting rod 29. When the top of the block 21 is aligned, under the rotation of the fan blade 34, the sewage in the cleaning grid frame 20 can be in a flowing state and discharged from the overflow hole of the cleaning grid frame 20 to avoid impurities sinking to the bottom, and then enter the sewage box 8 to complete the discharge of sewage. Finally, the rebound force of the spring 24 is used to make the spring 24 push the mounting block 23 to reset, so that the cleaning grid frame 20 is reset upward, the water injection holes of the cleaning grid frame 20 are aligned, and the water injection valve 40 injects water into the cleaning grid frame 20 to complete the water injection of the cleaning grid frame 20, thereby achieving the effect of efficiently cleaning the battery cell injection port and improving the durability of the brush 3.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for a battery cell liquid injection port, characterized in that: include: The conveying platform and the collaborative robot arm are provided with a brush at the end of the collaborative robot arm, and a barrier rod is provided above the conveying platform, and electric telescopic rods are installed at both ends of the barrier rod; Also includes: The spray brush mechanism is used to dry the battery cell filling port with air shower. The spray brush mechanism is installed on the outside of the brush. The spray brush mechanism includes a reciprocating motor frame installed on the top of the brush. The reciprocating motor frame is installed at the end of the collaborative robot arm. The reciprocating motor frame can make the brush move back and forth. The cleaning brush mechanism is used to clean impurities on the brush, and the cleaning brush mechanism is installed on the outside of the conveying platform. The cleaning brush mechanism includes a cleaning box arranged above the conveying platform, and the brush can be inserted into the cleaning box for cleaning. The cleaning brush mechanism also includes a mounting base installed on the bottom of the cleaning box, and a mounting bracket is installed at the bottom of the mounting base. A lifting cylinder is fixedly installed on the outside of the mounting bracket, and a turning cylinder is installed on the top of the lifting cylinder. A sealing cover is installed on the top of the turning cylinder. A cleaning grid frame is provided on the inner side of the cleaning box, and an insert block is slidably installed on the inner side of the cleaning grid frame. The insert block is installed on the top of the mounting base, and a slot is provided on the top of the mounting base. A plurality of overflow holes are provided on the outside of the cleaning grid frame, and a water injection valve is fixedly installed on the outside of the cleaning box. A water injection hole is provided on the outside of the cleaning grid frame. A plurality of support rods are rotatably installed on both sides of the cleaning grid frame, and a cavity is provided on the inner side of the mounting base, and a mounting block is installed on the bottom of the support rod. A spring is provided between the bottom of the mounting block and the inner side of the cavity. The material removal mechanism is used to improve the discharge efficiency of impurities in the cleaning box. The material removal mechanism is installed inside the cleaning box. The material removal mechanism includes a sewage box arranged outside the cleaning box. The sewage box is used to store and discharge sewage in the cleaning box.

2. The cleaning device for the battery cell liquid injection port according to claim 1, characterized in that: The spray brushing mechanism also includes multiple spray valves installed on the outside of the reciprocating motor frame, a battery cell strip is installed on the outside of the reciprocating motor frame, multiple air knives are installed on the outside of the battery cell strip, an air storage tank is provided at the bottom of the conveying platform, a pressure barrel is provided on the outside of the air storage tank, the pressure barrel is connected to the spray valve through a hose, and multiple guide strips are installed on the top of the conveying platform.

3. The cleaning device for the battery cell liquid injection port according to claim 2, characterized in that: The material removal mechanism also includes a mounting box installed in the mounting cavity of the mounting base plate, an elastic airbag is fixedly installed on the inner side of the mounting box, a pressure plate is rotatably installed on the outer side of the mounting block, the pressure plate is fixedly connected to the top of the elastic airbag, a rotating drum is rotatably installed on the inner side of the plug block, the bottom end of the rotating drum is docked with the elastic airbag through a hose, a prismatic insertion rod is installed at the bottom of the mounting block, a positioning cylinder is rotatably installed at the bottom of the mounting box, the prismatic insertion rod is slidably installed on the inner side of the positioning cylinder, and a synchronous belt is rotatably installed between the positioning cylinder and the rotating drum, a fixed sleeve is installed on the top of the mounting box, two spiral strips are fixedly installed on the inner side of the fixed sleeve, and a spiral groove matching the spiral strip is opened on the outer side of the support rod, and a plurality of fan blades are fixedly installed on the outer side of the rotating drum.

4. The cleaning device for the battery cell liquid injection port according to claim 3, characterized in that: A stopper is installed on the top of the guide bar, and the stopper is located on the outside of the stop rod.

5. The cleaning device for the battery cell liquid injection port according to claim 4, characterized in that: A rubber gasket is fixedly installed on one end of the water injection valve.

6. The cleaning device for the battery cell liquid injection port according to claim 5, characterized in that: An aeration stone is installed on the top of the rotating drum.

7. The cleaning device for the battery cell liquid injection port according to claim 6, characterized in that: A positioning frame is rotatably mounted on the bottom end of the rotating drum, and the positioning frame is mounted on the bottom of the mounting base plate.

8. The cleaning device for the battery cell liquid injection port according to claim 7, characterized in that: A guide rod is fixedly installed in the installation cavity of the installation base plate.

9. A cleaning method, characterized in that: The cleaning device for the battery cell liquid injection port according to claim 8, wherein the method comprises: S1: In the loading stage, multiple battery cells are sequentially loaded into the gaps between adjacent guide bars, so that the conveying platform conveys the battery cells to the outside of the barrier rod, and the spray valve sprays the solution in the pressure barrel into the battery cell filling port; S2: During the cleaning phase, the reciprocating motor frame drives the brush to move back and forth along the battery cell injection port to clean the impurities inside the battery cell injection port, and the air knife blows the battery cell injection port dry; S3: During the cleaning and brushing stage, the conveying platform delivers the cleaned battery cells out of the container, and the collaborative robot arm inserts the brush into the cleaning box, allowing the brush to soak and scrape in the cleaning grid frame; S4: In the sewage discharge stage, the brush presses down the cleaning grid frame, causing the pressure plate to compress the elastic airbag, injecting air into the cleaning grid frame, and causing the fan blades on the rotating drum to rotate, so that the impurities are mixed with the impurities in the cleaning grid frame and discharged into the sewage discharge box.

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