Cleaning device and method for battery cell liquid injection port

Abstract

The 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 effect and low cleaning efficiency of the battery cell liquid injection port. The cleaning device comprises a conveying platform and a cooperative mechanical arm, a brush is arranged at the end of the cooperative mechanical arm, and a stop lever is arranged above the conveying platform; electric telescopic rods are mounted at the two ends of the stop lever; the spraying and brushing mechanism is used for carrying out air showering and blow-drying treatment on the battery cell liquid injection opening, the spraying and brushing mechanism is installed on the outer side of the brush, the spraying and brushing mechanism comprises a reciprocating motor frame installed at the top of the brush, the reciprocating motor frame is installed at the end of the cooperative mechanical arm, and the reciprocating motor frame can make the brush move in a reciprocating mode; by means of the spraying mechanism, a cleaning solution can be sprayed into the battery cell liquid injection opening, the battery cell liquid injection opening is rapidly cleaned through a brush in a reciprocating scraping and brushing mode, then the cleaned battery cell liquid injection opening is subjected to air showering and blow-drying, the cleaning efficiency is improved, and therefore the labor intensity and the production cost are reduced.

Description

Technical Field

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

[0002] A battery cell is the core component of a battery, responsible for storing and releasing electrical energy. It is a key component where electrochemical reactions occur in the battery, and is composed of materials such as a positive electrode, a negative electrode, an electrolyte, and a separator. It is usually protected by packaging on the outside, but the battery cell itself does not include peripheral components such as the battery housing and protection circuit.

[0003] Cleaning the liquid injection port of the battery cell is a key step in the battery manufacturing process. The liquid injection port is the channel for injecting the electrolyte inside the battery cell. If there is electrolyte residue or other impurities around the liquid injection 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 rate of the battery cell. Currently, the most common method for cleaning the liquid injection port in lithium battery production is for workers to use a brush dipped in DMC to clean the liquid injection port. Electrolyte residue will cause problems such as explosion points and welding explosions during the welding of the sealing nail, affecting the excellent rate and safety of the battery. When workers clean the liquid injection port, due to differences in the skills and experience of different operators, the cleaning effect may be inconsistent, and the time required for manual cleaning is relatively long, the workers are prone to fatigue, and the cost is relatively high. Summary of the Invention

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

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A cleaning device for the liquid injection port of a battery cell, comprising: a conveying platform and a collaborative robotic arm arranged outside the conveying platform. A brush is arranged at the end of the collaborative robotic arm. A blocking rod is arranged above the conveying platform, and an electric telescopic rod is installed between both ends of the blocking rod and the outside of the conveying platform. It further includes: a spraying and brushing mechanism for air-blowing and drying the liquid injection port of the battery cell. The spraying and brushing mechanism is installed outside the brush. The spraying and brushing mechanism includes a reciprocating motor frame installed on the top of the brush, and the reciprocating motor frame is installed at the end of the collaborative robotic arm, and the reciprocating motor frame can make the brush reciprocate; a cleaning mechanism for cleaning impurities on the brush. The cleaning mechanism is installed outside the conveying platform. The cleaning mechanism includes a cleaning box arranged above the conveying platform, and the brush can be inserted into the cleaning box for cleaning; a material removal mechanism for improving 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 discharge box arranged outside the cleaning box, and the sewage discharge box is used for storing and discharging the sewage in the cleaning box.

[0006] Preferably, the spraying mechanism further includes a plurality of spray valves fixedly installed at equal intervals on the outer side of the reciprocating motor frame. A battery core pressing strip is fixedly installed on the outer side of the reciprocating motor frame. A plurality of air knives are fixedly installed at equal intervals on the outer side of the battery core pressing strip. An air storage tank is arranged at the bottom of the conveying platform. A pressure barrel is arranged on the outer side of the air storage tank. The pressure barrel is docked with the spray valve through a hose. A plurality of guide strips are installed at equal intervals on the top of the conveying platform.

[0007] Preferably, the cleaning mechanism further includes a mounting bottom plate fixedly installed at the bottom of the cleaning box. A mounting bracket is fixedly installed at the bottom of the mounting bottom plate. A lifting cylinder is fixedly installed on the outer side of the mounting bracket. The top end of the lifting cylinder is fixedly installed with a flipping cylinder. The top of the flipping cylinder is fixedly installed with a sealing cover. A cleaning grid frame is arranged inside the cleaning box. A plug is slidably installed inside the cleaning grid frame. The plug is fixedly installed on the top of the mounting bottom plate. A slot for limiting and plugging the cleaning grid frame is formed on the top of the mounting bottom plate. A plurality of water overflow holes are arranged at equal intervals on the outer side of the cleaning grid frame. A water injection valve is fixedly installed on the outer side of the cleaning box. A water injection hole is formed on the outer side of the cleaning grid frame, and the height of the water injection hole is less than that of the water overflow hole. A plurality of support rods are rotatably installed at equal intervals on both sides of the cleaning grid frame. A cavity for inserting the support rods is formed inside the mounting bottom plate. An installation block is fixedly installed at the bottom of the support rod. A spring is arranged between the bottom of the installation block and the inner side of the cavity.

[0008] Preferably, the material removing mechanism further includes a mounting box fixedly installed in the installation cavity of the mounting bottom plate. An elastic airbag is fixedly installed inside the mounting box. The elastic airbag is docked with the outer side of the mounting box through a one-way air inlet valve. A pressing plate is rotatably installed on the outer side of the mounting block. The pressing plate is fixedly connected with the top of the elastic airbag. A rotating cylinder is rotatably installed inside the plug. The bottom end of the rotating cylinder is docked with the elastic airbag through a hose, and the top end of the rotating cylinder is of a one-way exhaust valve structure. A rhombic insertion rod is fixedly installed at the bottom of the mounting block. A positioning cylinder is rotatably installed at the bottom of the mounting box. The rhombic insertion rod is slidably installed inside the positioning cylinder. A synchronous belt is rotatably installed between the positioning cylinder and the rotating cylinder. A fixed sleeve is fixedly installed on the top of the mounting box. Two symmetrically distributed spiral strips are fixedly installed inside the fixed sleeve. A spiral groove matching with the spiral strips is formed on the outer side of the support rod. A plurality of fan blades are fixedly installed at central symmetry on the outer side of the rotating cylinder.

[0009] Preferably, a blocking block is installed on the top of the guide strip, and the blocking block is located outside the blocking rod.

[0010] Preferably, a rubber gasket is fixedly installed at one end of the water injection valve close to the cleaning grid frame.

[0011] Preferably, an aeration stone is fixedly installed at the top end of the rotating cylinder.

[0012] Preferably, a positioning frame is rotatably installed at the bottom end of the rotating cylinder, and the positioning frame is fixedly installed at the bottom of the installation base plate.

[0013] Preferably, a guide rod for the limiting sliding of the pressing plate is fixedly installed in the installation cavity of the installation base plate.

[0014] A cleaning method, the method steps are as follows: S1: In the feeding stage, a plurality of battery cells are sequentially loaded into the gaps between adjacent guide strips, so that the conveying platform conveys the battery cells to the outside of the stop rod, and the spray valve sprays the solution in the pressure barrel into the liquid injection port of the battery cell; S2: In the cleaning stage, the reciprocating motor frame drives the brush to move reciprocally along the liquid injection port of the battery cell to clean the impurities in the liquid injection port of the battery cell, and the air knife blows and dries the liquid injection port of the battery cell; S3: In the cleaning and brushing stage, the conveying platform conveys the battery cells that have been cleaned out of the material, and the cooperative robotic arm inserts the brush into the cleaning box, so that the brush is soaked and scrubbed in the cleaning grid frame; S4: In the sewage discharge stage, the brush presses down the cleaning grid frame, so that the pressing plate compresses the elastic air bag, injects air into the cleaning grid frame, and rotates the fan blades on the rotating cylinder, so that the impurities are mixed with the impurities in the cleaning grid frame and discharged into the sewage discharge box.

[0015] Compared with the prior art, the beneficial effects of the present invention are: Through the spraying and brushing mechanism, the present invention can spray a cleaning solution into the liquid injection port of the battery cell, and adopt a reciprocating scraping and brushing method to quickly clean the liquid injection port of the battery cell with the brush, and then blow and dry the liquid injection port of the battery cell that has been cleaned, improving the cleaning efficiency, thereby reducing the labor intensity and production cost.

[0016] Through the cleaning and brushing mechanism, the cooperative robotic arm can insert the brush into the cleaning grid frame to soak and scrub the brush, maintaining the cleanliness of the brush, and when the brush presses down the cleaning grid frame, the insertion block can discharge the sewage in the cleaning grid frame, facilitating re-supplying water to the cleaning grid frame, preventing the situation of impurity residue in the cleaning grid frame, ensuring the cleaning effect of the brush each time, thereby facilitating the continuous use of the brush and improving the durability of the brush.

[0017] Through the material removal mechanism, the present invention can inject air into the cleaning mesh frame during the downward movement of the cleaning mesh frame, and make the fan blades rotate in the water of the cleaning mesh frame, facilitating the rapid mixing of the impurities discharged from the brush with the water, and making the sewage in the cleaning mesh frame in a flowing state, facilitating the discharge of the sewage from the overflow holes of the cleaning mesh frame, thereby achieving the effect of rapid sewage discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is Figure 1 an enlarged schematic diagram of area A in Figure 3 It is a schematic diagram of the spray valve and the air knife structure in the present invention; Figure 4 It is a schematic diagram of the cover plate and the mounting bracket structure in the present invention; Figure 5 It is a schematic diagram of the water injection valve and the cleaning box structure in the present invention; Figure 6 It is a schematic diagram of the plug and the cleaning mesh frame structure in the present invention; Figure 7 It is a schematic diagram of the mounting base plate and the sewage discharge box structure in the present invention; Figure 8 It is a schematic diagram of the pressing plate and the elastic airbag structure in the present invention; Figure 9 It is a schematic diagram of the rhombic insertion rod and the fixed sleeve structure in the present invention.

[0019] In the figure: 1, conveying platform; 2, collaborative robotic arm; 3, brush; 4, baffle; 5, electric telescopic rod; 6, reciprocating motor frame; 7, cleaning box; 8, sewage discharge box; 9, spray valve; 10, battery cell pressing strip; 11, air knife; 12, air storage tank; 13, pressure barrel; 14, guide strip; 15, mounting base plate; 16, mounting bracket; 17, lifting cylinder; 18, flipping cylinder; 19, sealing cover; 20, cleaning mesh frame; 21, plug; 22, support rod; 23, mounting block; 24, spring; 25, mounting box; 26, elastic airbag; 27, pressing plate; 28, rotating cylinder; 29, rhombic insertion rod; 30, positioning cylinder; 31, synchronous belt; 32, fixed sleeve; 33, spiral strip; 34, fan blade; 35, baffle block; 36, rubber gasket; 37, aeration stone; 38, positioning frame; 39, guide rod; 40, water injection valve. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1-8 , the cleaning device for the liquid injection port of the battery cell in the figure includes a conveying platform 1 and a cooperative robotic arm 2 arranged outside the conveying platform 1. A brush 3 is arranged at the end of the cooperative robotic arm 2. The cooperative robotic arm 2 cleans the liquid injection port of the battery cell on the conveying platform 1 through the brush 3. A blocking rod 4 is arranged above the conveying platform 1. Electric telescopic rods 5 are installed between both ends of the blocking rod 4 and the outside of the conveying platform 1. The blocking rod 4 is lifted and lowered through the electric telescopic rods 5, so that the blocking rod 4 can block the movement of the battery cell, facilitating the brush 3 to clean the liquid injection port of the battery cell; further includes: a spraying and brushing mechanism for performing air shower drying treatment on the liquid injection port of the battery cell. The spraying and brushing mechanism is installed outside the brush 3.

[0022] The spraying and brushing mechanism includes a reciprocating motor frame 6 installed on the top of the brush 3, and the reciprocating motor frame 6 is installed at the end of the cooperative robotic arm 2. The reciprocating motor frame 6 can make the brush 3 reciprocate. The spraying and brushing mechanism further includes a plurality of spray valves 9 fixedly installed at equal intervals outside the reciprocating motor frame 6, so that the cooperative robotic arm 2 first sprays and humidifies the liquid injection port of the battery cell through the spray valves 9, facilitating the brush 3 to clean the liquid injection port of the battery cell. An electric core pressing strip 10 is fixedly installed outside the reciprocating motor frame 6, and a plurality of air knives 11 are fixedly installed at equal intervals outside the electric core pressing strip 10. An air storage tank 12 is arranged at the bottom of the conveying platform 1. The air storage tank 12 can supply air to the air knives 11, so that the air knives 11 perform air shower drying on the liquid injection port of the battery cell after being cleaned by the brush 3. A pressure barrel 13 is arranged outside the air storage tank 12. The pressure barrel 13 is connected to the spray valves 9 through a hose, so that the pressure barrel 13 conveys a cleaning solution into the spray valves 9. A plurality of guiding strips 14 are installed at equal intervals on the top of the conveying platform 1. The plurality of conveyed battery cells are separated through the gaps between the plurality of guiding strips 14 to prevent collision. A blocking block 35 is installed on the top of the guiding strip 14, and the blocking block 35 is located outside the blocking rod 4, so that the blocking block 35 provides support for the outside of the battery cell, facilitating the brush 3 to reciprocally clean the liquid injection port of the battery cell.

[0023] Embodiment 2: Please refer to Figures 3-6, this embodiment further explains the first embodiment, 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, and the cleaning mechanism also includes a mounting base 15 fixedly mounted on the bottom of the cleaning box 7, a mounting bracket 16 is fixedly mounted on the bottom of the mounting base 15, a lifting cylinder 17 is fixedly mounted on the outer side of the mounting bracket 16, a flip cylinder 18 is fixedly mounted on the top of the lifting cylinder 17, a sealing cover 19 is fixedly mounted on the top of the flip cylinder 18, and 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 arranged 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. 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 outer side of the cleaning grid frame 20. A water injection valve 40 is fixedly installed on the outer side of the cleaning box 7. A water injection hole is provided on the outer side of the cleaning grid frame 20 so that the water injection valve 40 can be filled with water through the water injection hole. 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, the cleaning grid frame 20 can be pressed downward along the inner side of the plug 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, and the brush 3 is cleaned with the reciprocating movement of the brush 3, so that the plug 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 20 is cleaned. 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 plate 15, a mounting block 23 is fixedly mounted on the bottom of the support rod 22, a spring 24 is arranged 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, and a rubber gasket 36 is fixedly mounted on one end of the water injection valve 40 close to 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.

[0024] Example 3: Please refer to Figures 5-8, this embodiment further illustrates other embodiments. The material removal mechanism in the figure includes a sewage discharge box 8 arranged outside the cleaning box 7. The sewage discharge box 8 is used to store and discharge the sewage in the cleaning box 7. The material removal mechanism further includes a mounting box 25 fixedly installed in the installation cavity of the installation base plate 15. An elastic airbag 26 is fixedly installed inside the mounting box 25. The elastic airbag 26 is connected to the outside of the mounting box 25 through a one-way intake valve. A pressing plate 27 is rotatably installed on the outside of the mounting block 23. The pressing 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 pressing plate 27 downward through the mounting block 23 on the support rod 22, so that the pressing plate 27 compresses the elastic airbag 26. A rotating cylinder 28 is rotatably installed inside the plug 21. The bottom end of the rotating cylinder 28 is connected to the elastic airbag 26 through a hose, and the top end of the rotating cylinder 28 is a one-way exhaust valve structure. When the elastic airbag 26 is compressed, it can inject air into the rotating cylinder 28 through the hose, and after the elastic airbag 26 resets, it can inhale the outside air through the one-way intake valve. A rhombic insertion rod 29 is fixedly installed at the bottom of the mounting block 23. A positioning cylinder 30 is rotatably installed at the bottom of the mounting box 25. The rhombic insertion rod 29 is slidably installed inside the positioning cylinder 30, and a synchronous belt 31 is rotatably installed between the positioning cylinder 30 and the rotating cylinder 28. A fixed sleeve 32 is fixedly installed at the top of the mounting box 25. Two symmetrically distributed spiral strips 33 are fixedly installed inside the fixed sleeve 32, and spiral grooves matching the spiral strips 33 are opened on the outside of the support rod 22. When the support rod 22 moves, the spiral groove on its outside can move along the outside 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 rhombic insertion 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 symmetrically distributed around the center are fixedly installed on the outside of the rotating cylinder 28. The rotating cylinder 28 discharges air through the fan blades 34 in cooperation with the rotating cylinder 28, improving the mixing efficiency of impurities and water, and further improving the cleaning efficiency of the brush 3. An aeration stone 37 is fixedly installed at the top end of the rotating cylinder 28. The rotating cylinder 28 injects air into the cleaning grid frame 20 through the aeration stone 37, 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 in a flowing state, facilitating it to be discharged into the sewage discharge box 8 to prevent the situation of impurities sinking to the bottom. A positioning frame 38 is rotatably installed at the bottom end of the rotating cylinder 28. The positioning frame 38 is fixedly installed at the bottom of the installation base plate 15, improving the stability of the rotation of the rotating cylinder 28. A guide rod 39 for limiting the sliding of the pressing plate 27 is fixedly installed in the installation cavity of the installation base plate 15, providing guidance and support for the movement of the pressing plate 27, and facilitating the pressing plate 27 to press the elastic airbag 26 smoothly.

[0025] Working principle: First, the staff separately installs multiple battery cells into the intervals between multiple guide bars 14, and the conveying platform 1 conveys the battery cells. When the battery cells move above the spray valve 9, 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 liquid injection port of the battery cell. Then, the battery cell contacts the stop bar 4, and the reciprocating motor frame 6 drives the brush 3 to move reciprocally, so that the brush 3 reciprocally cleans the liquid injection port of the battery cell. The air storage tank 12 conveys air to the air knife 11, so that the air knife 11 blows and dries the liquid injection port of the battery cell. The electric telescopic rod 5 raises the stop bar 4, and the conveying platform 1 conveys the cleaned battery cells out of the machine, completing the cleaning of the battery cells. After the brush 3 has been used for a long time, the collaborative robotic arm 2 inserts the brush 3 into the cleaning box 7, and the brush 3 is inserted into the cleaning grid frame 20. When the brush 3 moves reciprocally, the soaking and scraping of the brush 3 are realized. 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 downward. The spiral groove on the support rod 22 can move along the outside of the spiral bar 33, so that the support rod 22 is in a rotating state. The support rod 22 drives the rhombic insertion rod 29 to rotate through the mounting block 23. When the rhombic insertion rod 29 moves downward along the inside of the positioning cylinder 30, it drives 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 blade 34 to rotate, stirring the water in the cleaning grid frame 20. At the same time, the mounting block 23 drives the pressing plate 27 downward, so that the pressing plate 27 compresses the elastic airbag 26. The elastic airbag 26 injects air into the rotating cylinder 28 through the hose, and 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. When the overflow hole of the cleaning grid frame 20 is aligned with the top of the insertion block 21, 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, avoiding the situation of impurities sinking to the bottom, and then entering the sewage discharge box 8 to complete the discharge of the sewage. Finally, using the resilience of the spring 24, the spring 24 pushes the mounting block 23 to reset, so that the cleaning grid frame 20 resets upward, and the water injection holes of the cleaning grid frame 20 are aligned. The water injection valve 40 injects water into the cleaning grid frame 20 to complete the water injection of the cleaning grid frame 20, thus achieving the effects of efficiently cleaning the liquid injection port of the battery cell and improving the durability of the brush 3.

[0026] It should be noted that in this text, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for the liquid injection port of an electric cell, characterized in that, Including: A conveying platform (1) and a collaborative robotic arm (2), with a brush (3) provided at the end of the collaborative robotic arm (2), a stop bar (4) provided above the conveying platform (1), and electric telescopic rods (5) installed at both ends of the stop bar (4); Also including: A spraying and brushing mechanism for air-blowing and drying the liquid injection port of the battery cell. The spraying and brushing mechanism is installed outside the brush (3). The spraying and brushing mechanism includes a reciprocating motor frame (6) installed on the top of the brush (3), and the reciprocating motor frame (6) is installed at the end of the collaborative robotic arm (2). The reciprocating motor frame (6) can make the brush (3) reciprocate; A cleaning mechanism for cleaning impurities on the brush (3). The cleaning mechanism is installed outside the conveying platform (1). The cleaning mechanism includes a cleaning box (7) provided above the conveying platform (1), and the brush (3) can be inserted into the cleaning box (7) for cleaning; A material removal mechanism for improving the discharge efficiency of impurities in the cleaning box (7). The material removal mechanism is installed inside the cleaning box (7). The material removal mechanism includes a sewage discharge box (8) provided outside the cleaning box (7), and the sewage discharge box (8) is used for storing and discharging the sewage in the cleaning box (7).

2. The cleaning device for the liquid injection port of the battery cell according to claim 1, wherein: The spraying and brushing mechanism further includes a plurality of spray valves (9) installed outside the reciprocating motor frame (6), a battery cell pressing strip (10) installed outside the reciprocating motor frame (6), a plurality of air knives (11) installed outside the battery cell pressing strip (10), an air storage tank (12) provided at the bottom of the conveying platform (1), a pressure barrel (13) provided outside the air storage tank (12), the pressure barrel (13) is docked with the spray valve (9) through a hose, and a plurality of guiding strips (14) are installed on the top of the conveying platform (1).

3. The cleaning device for the liquid injection port of the battery cell according to claim 2, wherein: The cleaning mechanism further includes a mounting base plate (15) installed at the bottom of the cleaning box (7), a mounting bracket (16) installed at the bottom of the mounting base plate (15), a lifting cylinder (17) fixedly installed outside the mounting bracket (16), a flipping cylinder (18) installed at the top of the lifting cylinder (17), a sealing cover (19) installed at the top of the flipping cylinder (18), a cleaning grid frame (20) provided inside the cleaning box (7), an insertion block (21) slidably installed inside the cleaning grid frame (20), the insertion block (21) is installed on the top of the mounting base plate (15), and a slot is provided on the top of the mounting base plate (15). A plurality of water overflow holes are provided outside the cleaning grid frame (20), a water injection valve (40) is fixedly installed outside the cleaning box (7), a water injection hole is provided outside the cleaning grid frame (20), a plurality of support rods (22) are rotatably installed on both sides of the cleaning grid frame (20), a cavity is provided inside the mounting base plate (15), a mounting block (23) is installed at the bottom of the support rod (22), and a spring (24) is provided between the bottom of the mounting block (23) and the inside of the cavity.

4. The cleaning device for the liquid injection port of the battery cell according to claim 3, wherein: The material removing mechanism further includes an installation box (25) installed in the installation cavity of the installation bottom plate (15). An elastic airbag (26) is fixedly installed inside the installation box (25). A pressing plate (27) is rotatably installed on the outer side of the installation block (23). The pressing plate (27) is fixedly connected to the top of the elastic airbag (26). A rotating cylinder (28) is rotatably installed inside the insertion block (21). The bottom end of the rotating cylinder (28) is butted against the elastic airbag (26) through a hose. A rhombic insertion rod (29) is installed at the bottom of the installation block (23). A positioning cylinder (30) is rotatably installed at the bottom of the installation box (25). The rhombic insertion rod (29) is slidably installed inside the positioning cylinder (30). A synchronous belt (31) is rotatably installed between the positioning cylinder (30) and the rotating cylinder (28). A fixed sleeve (32) is installed at the top of the installation box (25). Two spiral strips (33) are fixedly installed inside the fixed sleeve (32). A spiral groove matching with the spiral strip (33) is formed on the outer side of the support rod (22). A plurality of fan blades (34) are fixedly installed on the outer side of the rotating cylinder (28).

5. The cleaning device for the liquid injection port of the battery cell according to claim 4, wherein: A stop block (35) is installed at the top of the guiding strip (14), and the stop block (35) is located outside the stop rod (4).

6. The cleaning device for the liquid injection port of the battery cell according to claim 5, wherein: A rubber washer (36) is fixedly installed at one end of the water injection valve (40).

7. The cleaning device for the liquid injection port of the battery cell according to claim 6, wherein: An aeration stone (37) is installed at the top end of the rotating cylinder (28).

8. The cleaning device for the liquid injection port of the battery cell according to claim 7, characterized in that: A positioning frame (38) is rotatably installed at the bottom end of the rotating cylinder (28), and the positioning frame (38) is installed at the bottom of the installation bottom plate (15).

9. The cleaning device for the liquid injection port of the battery cell according to claim 8, wherein: A guiding rod (39) is fixedly installed in the installation cavity of the installation bottom plate (15).

10. A cleaning method, characterized in that, Applied to the cleaning device for the electrolyte injection port of the battery cell according to claim 9, the method includes: S1: In the feeding stage, a plurality of battery cells are sequentially loaded into the gaps between adjacent guiding strips (14), so that the conveying platform (1) conveys the battery cells to the outside of the stop rod (4), and the spray valve (9) sprays the solution in the pressure barrel (13) into the electrolyte injection port of the battery cell; S2: In the cleaning stage, the reciprocating motor frame (6) drives the brush (3) to move reciprocally along the electrolyte injection port of the battery cell to clean the impurities in the electrolyte injection port of the battery cell, and the air knife (11) blows and dries the electrolyte injection port of the battery cell; S3: In the cleaning and brushing stage, the conveying platform (1) conveys the battery cells that have been cleaned out of the machine, and the cooperative robotic arm (2) inserts the brush (3) into the cleaning box (7) so that the brush (3) soaks and scrubs in the cleaning grid frame (20); S4: In the sewage discharging stage, the brush (3) presses down the cleaning grid frame (20) to compress the elastic airbag (26) by the pressing plate (27), inject air into the cleaning grid frame (20), and rotate the fan blades (34) on the rotating cylinder (28) to mix the impurities with the impurities in the cleaning grid frame (20) and discharge them into the sewage discharging box (8).

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