Deionized water cleaning solution and method for cleaning surface of lithium battery by using same

Abstract

The invention relates to a deionized water cleaning solution which is prepared by mixing 30%-100% of deionized water, 70%-0% of dimethyl carbonate and 60%-0% of absolute ethyl alcohol, and also relates to a method for cleaning the surface of a lithium battery by using the cleaning solution. The method sequentially comprises the following steps: S1, mixing deionized water with dimethyl carbonate to obtain a first cleaning solution; s2, mixing deionized water with absolute ethyl alcohol to obtain a second cleaning solution; s3, the first cleaning solution or the second cleaning solution is added into the cleaning device to clean the surface of the lithium battery, by means of the method, white spots of lithium hexafluorophosphate can be completely eliminated from the aluminum shell and other base materials, cleaning of the aluminum shell lithium battery is achieved, corrosion of the white spots to the aluminum shell is reduced, and the product quality is improved.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery technology, and more particularly to a deionized water cleaning liquid and a method for cleaning the surface of a lithium battery using the cleaning liquid. Background Art

[0002] Some aluminum-shell lithium batteries have residual electrolyte white spots on their surfaces from the production process, the main component of which is white powder crystals of lithium hexafluorophosphate. The current method for cleaning such white spots is to manually wipe the lithium battery shell with anhydrous ethanol or DMC (dimethyl carbonate). After cleaning, there will still be residual white spots that cannot be completely removed by anhydrous ethanol or DMC (dimethyl carbonate). Such white spots will not only affect the cleanliness of the battery appearance, but also corrode the aluminum shell and the pole, affecting the battery quality. Therefore, it is urgent to develop a more effective method for cleaning aluminum shells and other substrates, in order to reduce damage to the aluminum shell of lithium batteries and extend the service life of the aluminum shell.

[0003] The Chinese patent with publication number CN114865251B discloses a lithium battery shell electrolyte removal structure and a cleaning method thereof, which starts a hydraulic lifting plate to drive the cleaning device to descend, so that the cotton cloth clamped by the threaded cover is against the battery shell, and then starts the second servo motor to drive the first gear and the second gear of the inner cavity of the mounting plate to rotate on the top of the top cover, and drives the mounting head and the threaded cover on the surface to rotate together, so that the cotton cloth is used to wipe the battery shell with one end of the electrolyte to eliminate the electrolyte at the end, so as to solve the existing cleaning method of manually holding a wiping cloth to wipe the port of the battery shell, but the manual method will result in a relatively slow wiping effect, and in addition, manual wiping will result in omissions, resulting in partial The problem of not wiping clean and needing to rework and wipe again; Chinese patent with publication number CN117772699A discloses a clamp for cleaning aluminum shells of lithium batteries. When cleaning cylindrical aluminum shells of lithium batteries, multiple aluminum shells are placed equidistantly on the filter plate, and the aluminum shells are located between two opposite first clamping blocks. After placement, the first hydraulic rod is retracted to drive multiple groups of connecting rods to move relative to each other, clamp the cylindrical aluminum shell, and immerse the aluminum shell in the cleaning tank for cleaning. When cleaning, the first hydraulic rod is started again to realize the movement of the rack away from the slide board. At this time, the first clamp is separated from the aluminum shell, and the aluminum shell falls on the filter plate. The second hydraulic rod is started to realize the lowering of the filter plate. When the first hydraulic rod is started, the first clamp is realized to clamp different positions of the aluminum shell, so that the reaction between the aluminum shell and the cleaning agent is more comprehensive, thereby improving the cleaning effect.

[0004] However, the inventors found that in practice, white spots existed on all six sides of the lithium battery shell, and the clamping parts of the lithium battery were not properly cleaned when wiping. The above two cleaning methods were inefficient and did not clean properly, and could not achieve a thorough cleaning effect, thus affecting the service life of the lithium battery. Summary of the invention

[0005] The purpose of the present invention is to provide a deionized water cleaning solution in view of the deficiencies in the prior art. The deionized water cleaning solution is deionized water, a mixed solution of deionized water and anhydrous ethanol, or a mixed solution of deionized water and dimethyl carbonate. The method can completely eliminate lithium hexafluorophosphate white spots from substrates such as aluminum shells, thereby cleaning aluminum shell lithium batteries, reducing the corrosion of the white spots on the aluminum shells, and improving product quality.

[0006] The purpose of the present invention is to address the deficiencies of the prior art and also provide a method for cleaning the surface of a lithium battery using a cleaning liquid. Deionized water and dimethyl carbonate are mixed to obtain a first cleaning liquid, and deionized water and anhydrous ethanol are mixed to obtain a second cleaning liquid. The first cleaning liquid or the second cleaning liquid is sprayed out by a first nozzle in a spiral shape through a cleaning component and a blowing component, so that it can fully contact the white spots on the four sides of the lithium battery shell. The top and bottom surfaces of the lithium battery shell are cleaned through the cleaning component to achieve a fully automatic cleaning effect, replacing the manual wiping method and improving the cleaning quality.

[0007] The technical solutions of the present invention are as follows:

[0008] A deionized water cleaning solution comprises the following solution ratio range: 30%-100% deionized water, 70%-0% dimethyl carbonate, and 60%-0% anhydrous ethanol.

[0009] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0010] S1, mixing deionized water and dimethyl carbonate to obtain a first cleaning solution;

[0011] S2, mixing deionized water and anhydrous ethanol to obtain a second cleaning solution;

[0012] S3. Add the first cleaning liquid or the second cleaning liquid into the cleaning device to clean the surface of the lithium battery.

[0013] As a preferred embodiment, in S3, the cleaning device includes a workbench, a top extension assembly is arranged on the workbench, a lifting assembly is arranged above the top extension assembly, and a cleaning assembly and a blowing assembly driven by the lifting assembly are arranged, the cleaning assembly includes a plurality of first nozzles and an air nozzle rotatably arranged on the first nozzle, the blowing assembly includes a first blowing head and a second blowing head respectively arranged on the upper and lower sides of the first nozzle, a clamping assembly is arranged on both sides of the workbench, and a cleaning assembly is arranged on the workbench, the top extension assembly is used to drive the lithium battery to be top extended, the cleaning assembly is used to spray the first cleaning liquid or the second cleaning liquid on the four sides of the lithium battery through the first nozzle, and at the same time, the first cleaning liquid or the second cleaning liquid layer is spirally sprayed through the air nozzle, the blowing assembly is used to slow down the flow speed of the first cleaning liquid or the second cleaning liquid through the second blowing head, and at the same time, clean the impurities on the surface of the lithium battery through the first blowing head, and the cleaning assembly is used to clean the top and bottom surfaces of the lithium battery after the clamping assembly clamps the lithium battery.

[0014] As a preferred embodiment, the extension assembly includes a through slot opened on the workbench, a fixed rod fixedly set on the workbench, an extension plate slidably set on the fixed rod, and a first cylinder fixedly set on the workbench, the output shaft of the first cylinder is fixedly connected to the extension plate, and the extension plate is matched with the through slot and the lithium battery.

[0015] Preferably, the lifting assembly includes a motor fixedly mounted on the workbench, a plurality of screw rods rotatably mounted on the workbench, and a slide plate slidably mounted on the screw rods, wherein the motor output shaft is fixedly connected to one side of the screw rods and the plurality of screw rods are connected via belts.

[0016] As a preferred embodiment, the cleaning component also includes a rectangular frame fixedly arranged on the skateboard, a first water pipe fixedly arranged in the rectangular frame, a through hole opened on one side of the rectangular frame, a driving tooth fixedly arranged on the air nozzle, a rack fixedly arranged on the workbench, a first bevel tooth and a second bevel tooth rotatably arranged on the rectangular frame, a passive tooth fixedly arranged on the first bevel tooth and the second bevel tooth, and a first sponge fixedly arranged on the skateboard, the air nozzle is rotatably arranged on the through hole, the first bevel tooth is meshed with the second bevel tooth, the driving tooth is meshed with the passive tooth, a plurality of the driving teeth are meshed, the first sponge cooperates with four sides of the lithium battery, and the first nozzle is fixedly arranged on the first water pipe.

[0017] Preferably, the blowing assembly further comprises a first air hole and a second air hole opened on the upper and lower sides of the rectangular frame, the first blowing head and the second blowing head are respectively arranged on the first air hole and the second air hole, and the first blowing head, the second blowing head and the air nozzle are connected.

[0018] Preferably, the clamping assembly includes extension rods fixedly arranged on both sides of the workbench, clamping rods slidably arranged on the extension rods, clamping plates fixedly arranged on the clamping rods, and blowing holes obliquely opened on the clamping plates, and the clamping plates cooperate with the lithium battery.

[0019] Preferably, the cleaning assembly includes a second cylinder fixedly arranged on one side of the workbench, a sliding rod slidably arranged on the workbench, a connecting frame fixedly arranged on the sliding rod, a second water pipe fixedly arranged in the connecting frame, a second nozzle fixedly arranged on the second water pipe, and a second sponge fixedly arranged on the connecting frame, and the second sponge cooperates with the top and bottom surfaces of the lithium battery.

[0020] As a preferred embodiment, a positioning block is also provided on the workbench.

[0021] The beneficial effects of the present invention are

[0022] 1. The present invention uses 100% deionized water, a mixed solution of deionized water and dimethyl carbonate, and a mixed solution of deionized water and anhydrous ethanol to clean white spots on the surface of the battery. After being wiped and cleaned by deionized water and some solutions in different proportions, there is no residual white spot on the battery, thereby eliminating the risk of corroding the aluminum shell and making the battery appearance clean and pollution-free. In addition, there is no risk of short-circuiting the battery due to conduction during the process of wiping the battery with deionized water, and the surface of the aluminum shell will not be corroded. In addition, the use of deionized water and the control of temperature can avoid the hydrolysis of lithium hexafluorophosphate to generate hydrogen fluoride, thereby preventing the hydrogen fluoride from corroding the lithium battery.

[0023] 2. The present invention is provided with a cleaning device, which enables the first nozzle to spray the first cleaning liquid or the second cleaning liquid in a spiral shape through a cleaning component and a blowing component, and at the same time slows down the downward flow speed of the liquid, so that the liquid is in full contact with the white spots on the four sides of the lithium battery shell to clean the white spots. The white spots on the top and bottom surfaces of the lithium battery are cleaned through the clamping component and the cleaning component, thereby achieving a fully automatic cleaning effect, replacing the manual wiping method, and improving the cleaning efficiency.

[0024] In summary, the present invention has the advantages of good cleaning effect and high cleaning efficiency, and is suitable for the field of lithium battery technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings:

[0026] Figure 1 The test results of the first cleaning solution and the second cleaning solution in 8 embodiments of the present invention are shown in FIG.

[0027] Figure 2 is a schematic diagram of the structure of the cleaning device;

[0028] Figure 3is a schematic diagram of the structure of the cleaning component;

[0029] Figure 4 It is a structural schematic diagram of the blowing component;

[0030] Figure 5 is a schematic diagram of the structure of the through hole;

[0031] Figure 6 It is a schematic diagram of the structure of the cleaning component;

[0032] Figure 7 This is a schematic diagram of the state when the cleaning component descends after the top extension plate drives the lithium battery to rise;

[0033] Figure 8 This is a schematic diagram of the state when the first nozzle sprays the lithium battery shell and the air nozzle blows air to the liquid;

[0034] Fig. 9 for Figure 8 Enlarged view of point A in the middle;

[0035] Fig.10 It is a schematic diagram of the state when the active tooth and the rack are meshed to drive the air nozzle to rotate;

[0036] Fig.11 It is a schematic diagram of the state when the active teeth are meshing;

[0037] Fig.12 This is a schematic diagram of the state when the first sponge is wiping the lithium battery housing;

[0038] Fig.13 It is a schematic diagram of the state when the clamping plate clamps the lithium battery;

[0039] Fig.14 for Fig.13 Enlarged view of point B in the middle;

[0040] Fig.15 A schematic diagram of the state when the second nozzle and the second sponge clean the top and bottom surfaces of the lithium battery;

[0041] Fig.16 for Fig.15 Enlarged view of point C in the middle;

[0042] Figure numerals: 1 cleaning device, 2 workbench, 3 extension assembly, 31 through slot, 32 fixing rod, 33 extension plate, 34 first cylinder, 4 lifting assembly, 41 motor, 42 screw rod, 43 slide plate, 5 cleaning assembly, 51 first nozzle, 52 air nozzle, 53 rectangular frame, 54 first water pipe, 55 through hole, 56 active tooth, 57 rack, 58 first bevel tooth, 59 second bevel tooth, 511 passive tooth, 512 first sponge, 6 blowing assembly, 61 first blowing head, 62 second blowing head, 63 first air hole, 64 second air hole, 7 clamping assembly, 71 extension rod, 72 clamping rod, 73 clamping plate, 74 blowing hole, 8 cleaning assembly, 81 second cylinder, 82 sliding rod, 83 connecting frame, 84 second water pipe, 85 second nozzle, 86 second sponge, 9 lithium battery, 10 positioning block. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0044] Embodiment 1

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0046] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0047] S1, mixing 80% deionized water and 20% dimethyl carbonate to obtain a first cleaning solution;

[0048] S2, mixing 100% deionized water and 0% anhydrous ethanol to obtain a second cleaning solution;

[0049] S3. Add the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery.

[0050] It is worth mentioning that Figure 2As shown in S3, the cleaning device 1 includes a workbench 2, a top extension assembly 3 is arranged on the workbench 2, a lifting assembly 4 is arranged above the top extension assembly 3, and a cleaning assembly 5 and a blowing assembly 6 driven by the lifting assembly 4 are arranged, the cleaning assembly 5 includes a plurality of first nozzles 51 and an air nozzle 52 rotatably arranged on the first nozzle 51, the blowing assembly 6 includes a first blowing head 61 and a second blowing head 62 respectively arranged on the upper and lower sides of the first nozzle 51, a clamping assembly 7 is arranged on both sides of the workbench 2, a cleaning assembly 8 is arranged on the workbench 2, and the top extension assembly 4 is arranged above the top extension assembly 4. Component 3 is used to drive the lithium battery 9 to extend upward, the cleaning component 5 is used to spray the first cleaning liquid or the second cleaning liquid on the four sides of the lithium battery 9 through the first nozzle 51, and at the same time, the first cleaning liquid or the second cleaning liquid layer is sprayed in a spiral shape through the air nozzle 52, the blowing component 6 is used to slow down the flow speed of the first cleaning liquid or the second cleaning liquid through the second blowing head 62, and at the same time, the impurities on the surface of the lithium battery 9 are cleaned through the first blowing head 61, and the cleaning component 8 is used to clean the top and bottom surfaces of the lithium battery 9 after the clamping component 7 clamps the lithium battery 9.

[0051] It is worth mentioning that Figure 7 As shown, the extension assembly 3 includes a through slot 31 opened on the workbench 2, a fixed rod 32 fixedly arranged on the workbench 2, a top extension plate 33 slidably arranged on the fixed rod 32, and a first cylinder 34 fixedly arranged on the workbench 2. The output shaft of the first cylinder 34 is fixedly connected to the top extension plate 33. The top extension plate 33 cooperates with the through slot 31 and the lithium battery 9. The lithium battery 9 is placed on the workbench 2 manually or by a robot. A negative pressure hole is opened on the top extension plate 33, and a negative pressure device is connected to the top extension plate 33. The negative pressure hole is used to drive the lithium battery 9 to be raised and lowered to adsorb it. This technology is an existing mature technology, so it will not be described in detail. When in use, after the lithium battery 9 is placed, the first cylinder 34 drives the top extension plate 33 to lift the lithium battery 9, and adsorbs it through the negative pressure device during the lifting process to prevent the lithium battery from tipping over and improve the degree of automation of lithium battery cleaning.

[0052] It is worth mentioning that Figure 7 As shown, the lifting assembly 4 includes a motor 41 fixedly arranged on the workbench 2, a plurality of screw rods 42 rotatably arranged on the workbench 2, and a slide plate 43 slidably arranged on the screw rods 42. The output shaft of the motor 41 is fixedly connected to one side of the screw rods 42 and the plurality of screw rods 42 are connected by belts. When in use, after the lithium battery 9 is lifted, the motor 41 rotates to drive the plurality of screw rods 42 to rotate at the same time, driving the slide plate 43 to descend, so that the first nozzle 51 descends and passes through the four sides of the lithium battery shell to clean it, thereby solving the problem of improper cleaning caused by manual wiping.

[0053] It is worth mentioning that Figures 8 to 12As shown, the cleaning assembly 5 also includes a rectangular frame 53 fixedly arranged on the slide plate 43, a first water pipe 54 fixedly arranged in the rectangular frame 53, a through hole 55 opened on one side of the rectangular frame 53, an active tooth 56 fixedly arranged on the air nozzle 52, a rack 57 fixedly arranged on the workbench 2, a first bevel tooth 58 and a second bevel tooth 59 rotatably arranged on the rectangular frame 53, a passive tooth 511 fixedly arranged on the first bevel tooth 58 and the second bevel tooth 59, and a first sponge 512 fixedly arranged on the slide plate 43, the air nozzle 52 is rotatably arranged on the through hole 55, the first bevel tooth 58 is meshed with the second bevel tooth 59, the active tooth 56 is meshed with the passive tooth 511, and a plurality of active teeth 56 are meshed. The first sponge 512 cooperates with the lithium battery 9 on four sides, and the first nozzle 51 is fixedly arranged on the first water pipe 54, wherein the first water pipe 54 is connected with a liquid supply pipe, and the first cleaning liquid or the second cleaning liquid enters the first water pipe 54 through the liquid supply pipe. In a water pipe 54, in addition, an air supply pipe is connected to the rectangular frame 53, and the gas enters the air nozzle 52 through the air supply pipe. When in use, the slide plate 43 drives the rectangular frame 53, the first nozzle 51 and the air nozzle 52 to descend, and the first cleaning liquid or the second cleaning liquid is sprayed through the first nozzle 51 to spray the four sides of the lithium battery 9 shell. During the spraying process, the gas flows into the air nozzle 52 from the rectangular frame 53, and the air nozzle 52 blows the liquid sprayed by the first nozzle 51. At the same time, the active teeth 56 rotate when passing through the rack 57, and the active teeth 57 engage and rotate with each other, thereby driving the passive teeth 511, the first bevel teeth 58 and the second bevel teeth 59 to rotate, so that the active teeth 56 on the air nozzle 52 are all rotated, thereby driving the air nozzle 52 to rotate. In this way, the liquid layer can be spirally sprayed, so that the liquid can fully contact the white spot and can produce a flushing action on the white spot, thereby improving the cleaning effect.

[0054] It is worth mentioning that Figure 8 and Fig. 9As shown, the blowing assembly 6 also includes a first air hole 63 and a second air hole 64 opened on the upper and lower sides of the rectangular frame 53. The first air blowing head 61 and the second air blowing head 62 are respectively arranged on the first air hole 63 and the second air hole 64. The first air blowing head 61, the second air blowing head 62 and the air nozzle 52 are connected. When in use, when the first nozzle 51 starts to spray, the liquid flows downward along the shell. At this time, the second air blowing head 62 blows air to the liquid flowing downward, slows down the downward flow speed of the liquid, prolongs the residence time of the liquid on the shell, and fully reacts with the white spot. In addition, since the first air blowing head 61 and the first nozzle 51 have a long travel distance, when the first nozzle 51 is spraying, the first air blowing head 61 will not interfere with the operation of the first nozzle 51, and in the process of the first nozzle 51 descending after cleaning the white spots, the first air blowing head 61 will blow the impurities and waste liquid with white spots remaining on the shell of the lithium battery 9, and clean the shell of the lithium battery 9 again. Finally, the first sponge 512 wipes the shell of the lithium battery 9 from top to bottom to completely remove the residual white spots, thereby solving the problem of rework due to improper manual wiping and improving the cleaning efficiency.

[0055] It is worth mentioning that Fig.13 As shown, the clamping assembly 7 includes an extension rod 71 fixedly arranged on both sides of the workbench 2, a clamping rod 72 slidably arranged on the extension rod 71, a clamping plate 73 fixedly arranged on the clamping rod 72, and a blowing hole 74 obliquely opened on the clamping plate 73, the clamping plate 74 cooperates with the lithium battery 9, wherein a driving device is arranged on the extension rod 71 to drive the clamping plate 73 to extend and retract. When in use, after the four sides of the lithium battery 9 shell are cleaned, the slide plate 43 drives the first nozzle 51 to rise and reset. During the resetting process, the first sponge 512 wipes the shell again. After the first nozzle 51 is reset, the clamping plates 73 on both sides move relatively until the lithium battery 9 is clamped, and the top extension plate 33 descends and resets to prepare for cleaning the top and bottom surfaces of the lithium battery 9.

[0056] It is worth mentioning that Fig.15 and Fig.16As shown, the cleaning assembly 8 includes a second cylinder 81 fixedly arranged on one side of the workbench 2, a sliding rod 82 slidably arranged on the workbench 2, a connecting frame 83 fixedly arranged on the sliding rod 82, a second water pipe 84 fixedly arranged in the connecting frame 83, a second nozzle 85 fixedly arranged on the second water pipe 84, and a second sponge 86 fixedly arranged on the connecting frame 83. The second sponge 86 cooperates with the top and bottom surfaces of the lithium battery 9, wherein the second water pipe 84 is also connected to a water supply pipe, and the first cleaning liquid and the second cleaning liquid are sprayed through the water supply pipe and the second nozzle 85. When in use, after the clamping plate 73 clamps the lithium battery 9, the second cylinder 81 pushes the second nozzle 85 to approach the lithium battery 9, and the top and bottom surfaces of the lithium battery 9 are sprayed by the second nozzle 85, and then the top and bottom surfaces are wiped by the second sponge 86, thereby completing the cleaning of the white spots on the lithium battery, thereby solving the problems of slow efficiency and incomplete wiping caused by manual wiping.

[0057] It is worth mentioning that Figure 2 As shown, a positioning block 10 is also provided on the workbench 2 , and the lithium battery 9 is limited by the positioning block 10 so that the lithium battery 9 is accurately located above the top extension plate 33 .

[0058] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 .

[0059] Embodiment 2

[0060] The only difference from the first embodiment is the following operating parameters of the first cleaning liquid and the second cleaning liquid.

[0061] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0062] S1, mixing 60% deionized water and 40% dimethyl carbonate to obtain a first cleaning solution;

[0063] S2, mixing 80% deionized water and 20% anhydrous ethanol to obtain a second cleaning solution;

[0064] S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery 9.

[0065] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 .

[0066] Embodiment 3

[0067] The only difference from the first embodiment is the following operating parameters of the first cleaning liquid and the second cleaning liquid.

[0068] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0069] S1, mixing 50% deionized water and 50% dimethyl carbonate to obtain a first cleaning solution;

[0070] S2, mixing 60% deionized water and 40% anhydrous ethanol to obtain a second cleaning solution;

[0071] S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery 9.

[0072] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 .

[0073] Embodiment 4

[0074] The only difference from the first embodiment is the following operating parameters of the first cleaning liquid and the second cleaning liquid.

[0075] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0076] S1, mixing 40% deionized water and 60% dimethyl carbonate to obtain a first cleaning solution;

[0077] S2, mixing 50% deionized water and 50% anhydrous ethanol to obtain a second cleaning solution;

[0078] S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery 9.

[0079] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 .

[0080] Embodiment 5

[0081] The only difference from the first embodiment is the following operating parameters of the first cleaning liquid and the second cleaning liquid.

[0082] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0083] S1, mixing 30% deionized water and 70% dimethyl carbonate to obtain a first cleaning solution;

[0084] S2, mixing 40% deionized water and 60% anhydrous ethanol to obtain a second cleaning solution;

[0085] S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery 9.

[0086] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 .

[0087] Embodiment 6

[0088] The only difference from the first embodiment is the following operating parameters of the first cleaning liquid and the second cleaning liquid.

[0089] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0090] S1, mixing 20% ​​deionized water and 80% dimethyl carbonate to obtain a first cleaning solution;

[0091] S2, mixing 30% deionized water and 70% anhydrous ethanol to obtain a second cleaning solution;

[0092] S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery 9.

[0093] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 .

[0094] Embodiment 7

[0095] The only difference from the first embodiment is the following operating parameters of the first cleaning liquid and the second cleaning liquid.

[0096] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0097] S1, mixing 0% deionized water and 100% dimethyl carbonate to obtain a first cleaning solution;

[0098] S2, mixing 20% ​​deionized water and 80% anhydrous ethanol to obtain a second cleaning solution;

[0099] S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery 9.

[0100] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 .

[0101] Embodiment 8

[0102] The only difference from the first embodiment is the following operating parameters of the first cleaning liquid and the second cleaning liquid.

[0103] A method for cleaning the surface of a lithium battery using a cleaning liquid comprises the following steps in sequence:

[0104] S1, mixing 0% deionized water, 50% dimethyl carbonate and 50% anhydrous ethanol to obtain a first cleaning solution;

[0105] S2, mixing 0% deionized water and 100% anhydrous ethanol to obtain a second cleaning solution;

[0106] S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device 1 to clean the surface of the lithium battery 9.

[0107] Finally, the cleaning performance of the first cleaning solution and the second cleaning solution finally obtained in this embodiment was tested. The test results are shown in the attached Figure 1 , from the attached Figure 1 The following conclusions can be drawn from the test data:

[0108] The following solution ratio range can achieve effective cleaning without white spot residue:

[0109] Deionized water and dimethyl carbonate mixed solution: 30%-100% deionized water, 70%-0% dimethyl carbonate;

[0110] The mixed solution of deionized water and anhydrous ethanol contains 40%-100% deionized water and 60%-0% anhydrous ethanol.

[0111] Working process

[0112] When the lithium battery 9 is placed, the first cylinder 34 drives the top extension plate 33 to lift the lithium battery 9, the motor 41 rotates to drive the plurality of screw rods 42 to rotate at the same time, and drives the slide plate 43 to descend. During the process of the slide plate 43 driving the rectangular frame 53, the first nozzle 51 and the air nozzle 52 to descend, the first cleaning liquid or the second cleaning liquid is sprayed through the first nozzle 51 to spray the four sides of the lithium battery 9 shell. During the spraying process, the gas flows from the rectangular frame 53 into the air nozzle 52, and the air nozzle 52 blows the liquid sprayed by the first nozzle 51. At the same time, the active tooth 56 rotates when passing through the rack 57. The active teeth 57 mesh with each other and rotate with each other, thereby driving the passive teeth 511, the first bevel teeth 58 and the second bevel teeth 59 to rotate, so that the active teeth 56 on the air nozzle 52 rotate, thereby driving the air nozzle 52 to rotate. In this way, the liquid layer can be sprayed out in a spiral shape, so that the liquid can fully contact the white spot and flush the white spot, thereby improving the cleaning effect. When the first nozzle 51 starts to spray, the liquid flows downward along the shell. At this time, the second blowing head 62 blows air to the liquid flowing downward, slowing down the downward flow speed of the liquid and prolonging the liquid. The first air blowing head 61 and the first nozzle 51 have a long travel distance, so when the first nozzle 51 is spraying, the first air blowing head 61 will not interfere with the operation of the first nozzle 51. In the process of the first nozzle 51 descending after cleaning the white spots, the first air blowing head 61 will blow the impurities and waste liquid with white spots remaining on the shell of the lithium battery 9, and clean the shell of the lithium battery 9 again. Finally, the first sponge 512 wipes the shell of the lithium battery 9 from top to bottom. When the four sides of the shell of the lithium battery 9 are cleaned, the slide plate 43 The first nozzle 51 is driven to rise and reset. During the resetting process, the first sponge 512 wipes the shell again. After the first nozzle 51 is reset, the clamping plates 73 on both sides move relatively until the lithium battery 9 is clamped. The top extension plate 33 descends and resets. The second cylinder 81 pushes the second nozzle 85 toward the lithium battery 9, and the top and bottom surfaces of the lithium battery 9 are sprayed by the second nozzle 85. Then, the top and bottom surfaces are wiped by the second sponge 86 to complete the cleaning of the white spots on the lithium battery, thereby solving the problems of slow efficiency and incomplete wiping caused by manual wiping.

[0113] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0114] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0115] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention, which should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A deionized water cleaning solution, characterized in that: The solution ratio range includes: 30%-100% deionized water, 70%-0% dimethyl carbonate, and 60%-0% anhydrous ethanol.

2. A method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 1, characterized in that: The following steps are included in sequence: S1, mixing deionized water and dimethyl carbonate to obtain a first cleaning solution; S2, mixing deionized water and anhydrous ethanol to obtain a second cleaning solution; S3, adding the first cleaning liquid or the second cleaning liquid into the cleaning device (1) to clean the surface of the lithium battery.

3. A method for cleaning the surface of a lithium battery using the cleaning solution according to any one of claims 1 to 2, characterized in that: In S3, the cleaning device (1) comprises a workbench (2), a top extension assembly (3) is arranged on the workbench (2), a lifting assembly (4) and a cleaning assembly (5) and a blowing assembly (6) driven by the lifting assembly (4) are arranged above the top extension assembly (3), the cleaning assembly (5) comprises a plurality of first nozzles (51) and an air nozzle (52) rotatably arranged on the first nozzle (51), the blowing assembly (6) comprises a first blowing head (61) and a second blowing head (62) respectively arranged on the upper and lower sides of the first nozzle (51), a clamping assembly (7) is arranged on both sides of the workbench (2), and a cleaning assembly (5) is arranged on the workbench (2). The assembly (8) comprises a lifting assembly (3) for driving the lithium battery (9) to be lifted, the cleaning assembly (5) for spraying the first cleaning liquid or the second cleaning liquid on the four sides of the lithium battery (9) through the first spray head (51) and spraying the first cleaning liquid or the second cleaning liquid layer in a spiral shape through the air nozzle (52), the blowing assembly (6) for slowing down the flow rate of the first cleaning liquid or the second cleaning liquid through the second blowing head (62) and cleaning impurities on the surface of the lithium battery (9) through the first blowing head (61), and the cleaning assembly (8) for cleaning the top surface and the bottom surface of the lithium battery (9) after the clamping assembly (7) clamps the lithium battery (9).

4. A method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 3, characterized in that: The extension assembly (3) comprises a through slot (31) provided on the workbench (2), a fixing rod (32) fixedly arranged on the workbench (2), an extension plate (33) slidably arranged on the fixing rod (32), and a first cylinder (34) fixedly arranged on the workbench (2); an output shaft of the first cylinder (34) is fixedly connected to the extension plate (33); and the extension plate (33) is matched with the through slot (31) and the lithium battery (9).

5. The method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 3, characterized in that: The lifting assembly (4) comprises a motor (41) fixedly arranged on the workbench (2), a plurality of screw rods (42) rotatably arranged on the workbench (2), and a slide plate (43) slidably arranged on the screw rods (42); the output shaft of the motor (41) is fixedly connected to one side of the screw rod (42), and the plurality of screw rods (42) are connected via belts.

6. A method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 5, characterized in that: The cleaning assembly (5) further comprises a rectangular frame (53) fixedly arranged on the slide plate (43), a first water pipe (54) fixedly arranged in the rectangular frame (53), a through hole (55) opened on one side of the rectangular frame (53), a driving tooth (56) fixedly arranged on the air nozzle (52), a rack (57) fixedly arranged on the workbench (2), a first bevel tooth (58) and a second bevel tooth (59) rotatably arranged on the rectangular frame (53), and a toothed wheel (58) fixedly arranged on the first bevel tooth (58) and the second bevel tooth (59). The invention relates to a passive tooth (511) on a slide plate (43), a first sponge (512) fixedly arranged on a slide plate (43), the air nozzle (52) being rotatably arranged on a through hole (55), the first bevel tooth (58) being meshed with the second bevel tooth (59), the active tooth (56) being meshed with the passive tooth (511), a plurality of the active teeth (56) being meshed, the first sponge (512) being matched with the four sides of a lithium battery (9), and the first nozzle (51) being fixedly arranged on a first water pipe (54).

7. A method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 6, characterized in that: The blowing assembly (6) further comprises a first air hole (63) and a second air hole (64) which are provided on the upper and lower sides of the rectangular frame (53); the first air blowing head (61) and the second air blowing head (62) are respectively arranged on the first air hole (63) and the second air hole (64); the first air blowing head (61), the second air blowing head (62) and the air nozzle (52) are connected to each other.

8. The method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 3, characterized in that: The clamping assembly (7) comprises an extension rod (71) fixedly arranged on both sides of the workbench (2), a clamping rod (72) slidably arranged on the extension rod (71), a clamping plate (73) fixedly arranged on the clamping rod (72), and a blowing hole (74) obliquely opened on the clamping plate (73), wherein the clamping plate (74) cooperates with the lithium battery (9).

9. The method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 3, characterized in that: The cleaning assembly (8) comprises a second cylinder (81) fixedly arranged on one side of the workbench (2), a sliding rod (82) slidably arranged on the workbench (2), a connecting frame (83) fixedly arranged on the sliding rod (82), a second water pipe (84) fixedly arranged in the connecting frame (83), a second nozzle (85) fixedly arranged on the second water pipe (84), and a second sponge (86) fixedly arranged on the connecting frame (83), wherein the second sponge (86) cooperates with the top surface and the bottom surface of the lithium battery (9).

10. The method for cleaning the surface of a lithium battery using a cleaning liquid according to claim 3, characterized in that: A positioning block (10) is also provided on the workbench (2).

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