CN116140266A

CN116140266A - Surface cleaning device, cleaning line and surface cleaning method

Info

Publication number: CN116140266A
Application number: CN202111397827.7A
Authority: CN
Inventors: 徐冶; 伍顺宏
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2023-05-23

Abstract

The application provides a surface cleaning device, a cleaning line and a surface cleaning method, and belongs to the technical field of battery production. Wherein, surface cleaning device includes positioning mechanism, liquid feed mechanism and drainage piece. The positioning mechanism is used for being connected with the shell and blocking the opening. The liquid supply mechanism is used for supplying cleaning liquid for cleaning the shell. The drainage piece is arranged on at least one side of the positioning mechanism and is used for guiding the cleaning liquid to the outer side face of the shell so as to clean the outer side face of the shell. The surface cleaning device adopting the structure can reduce the kinetic energy of the cleaning liquid on one hand so as to reduce the scouring force of the cleaning liquid, thereby being beneficial to relieving the deformation of the shell, and on the other hand, the cleaning liquid is enabled to present parabolic form to wash the shell, thereby being capable of relieving the atomization phenomenon of the cleaning liquid, reducing the capillary phenomenon of the cleaning liquid on the positioning mechanism and the shell, and being beneficial to reducing the risk of the cleaning liquid penetrating into the shell from a tiny gap between the positioning mechanism and the shell.

Description

Surface cleaning device, cleaning line and surface cleaning method

Technical Field

The application relates to the technical field of battery production, in particular to a surface cleaning device, a cleaning line and a surface cleaning method.

Background

Along with the great popularization of new energy automobiles, power batteries are widely developed. The power battery generally has a plurality of battery cells, and the battery cells are obtained by assembling an electrode assembly by winding or laminating a positive electrode sheet, a negative electrode sheet and a separator, and then filling the electrode assembly into a housing, covering an end cover, and then injecting electrolyte. With the increasing surface technical requirements of power batteries on the outer surfaces of battery monomers, conventional alcohol wiping, laser cleaning and plasma cleaning cannot meet the technical requirements, and chemical agent cleaning methods are required to be introduced to carry out surface treatment (including but not limited to degreasing, acid cleaning, passivation, water cleaning and other procedures). However, in the existing battery cell production line, the surface cleaning device for the battery cell easily affects the quality of the battery cell or causes damage to the battery cell when cleaning the outer surface of the battery cell, thereby resulting in higher rejection rate of the battery cell.

Disclosure of Invention

The embodiment of the application provides a surface cleaning device, a cleaning line and a surface cleaning method, which can effectively reduce the rejection rate of single batteries in the existing production line.

In a first aspect, embodiments of the present application provide a surface cleaning apparatus for cleaning a housing of a battery cell, the housing having an opening, the surface cleaning apparatus including a positioning mechanism, a liquid supply mechanism, and a drainage member; the positioning mechanism is used for being connected with the shell and sealing the opening; the liquid supply mechanism is used for providing a cleaning liquid for cleaning the shell; the drainage piece set up in at least one side of positioning mechanism, the drainage piece be used for with the washing liquid is directed to the lateral surface of shell, so as to right the lateral surface of shell washs, the lateral surface of shell with the face intersection at opening place.

In the above technical scheme, surface cleaning device is provided with positioning mechanism, liquid supply mechanism and drainage piece, can fix the shell through positioning mechanism to carry out the shutoff with the opening part of shell, so that the drainage piece that sets up in one side of positioning mechanism can guide the washing liquid that liquid supply mechanism provided to one side of shell, thereby wash the lateral surface of shell, in order to realize carrying out abluent function to the surface of shell. Although the opening of the shell is plugged through the positioning mechanism, a tiny gap is inevitably reserved between the positioning mechanism and the shell, when the shell is cleaned by the surface cleaning device with the structure, on one hand, the kinetic energy of the cleaning liquid provided by the liquid supply mechanism can be reduced by draining the cleaning liquid through the drainage piece, so that the scouring force of the cleaning liquid on the shell is reduced, the deformation phenomenon of the shell under the condition of larger scouring force of the cleaning liquid is reduced, and the situation that the tiny gap between the shell and the positioning mechanism is enlarged can be effectively relieved, so that the risk that the cleaning liquid enters the shell is reduced; on the other hand after carrying out the drainage through the washing liquid that the drainage piece provided liquid feed mechanism for the washing liquid can present parabolic form's fluid and wash the lateral surface of shell, and make the washing liquid flow on the lateral surface of shell, thereby can effectively reduce the atomizing phenomenon of washing liquid appearance, in order to alleviate the circumstances that the washing liquid after atomizing produced capillary phenomenon on positioning mechanism and shell, be favorable to reducing the risk that the washing liquid from the tiny gap infiltration in the shell between positioning mechanism and the shell, and then can reduce the washing liquid and get into in the shell in influence the free quality of battery or cause the free phenomenon of damaging of battery, in order to improve the higher problem of the disability rate of battery monomer in production process.

In some embodiments, the drainage member comprises a receptacle, a connection, and a drainage portion arranged in sequence in a vertical direction; the receiving part is used for receiving the cleaning liquid provided by the liquid supply mechanism; the connecting part is connected between the bearing part and the drainage part and is used for guiding the cleaning liquid on the bearing part to the drainage part; the drainage part extends along the horizontal direction and is used for guiding the cleaning liquid to the outer side surface of the shell.

In the technical scheme, the drainage piece is provided with the bearing part for bearing the cleaning liquid provided by the liquid supply mechanism, so that the cleaning liquid can be buffered and temporarily stored on the bearing part of the drainage piece and then flows to the connecting part, the bearing part can play a role in stabilizing the cleaning liquid provided by the liquid supply mechanism, the stability of the flow velocity of the cleaning liquid flowing from the bearing part to the connecting part is improved, and the cleaning liquid can flush the shell at a constant flow velocity. In addition, the drainage part is arranged along the horizontal direction, so that after the connection part guides the cleaning liquid on the bearing part to the drainage part, the cleaning liquid can flow to the shell along the horizontal direction and the shell is flushed by the fluid with a stable parabolic shape, and the cleaning quality of the shell is improved.

In some embodiments, the drain is closer to the positioning mechanism than the receptacle in the horizontal direction, and the drain is located on an underside of the receptacle in the vertical direction.

In the above technical scheme, the drainage part is arranged closer to the receiving part in the horizontal direction, and the drainage part is arranged at the lower side of the receiving part in the vertical direction, so that the connecting part is connected between the receiving part and the drainage part to form the drainage piece with a stepped structure, and the cleaning liquid is conveniently guided to the outer side surface of the shell, so that the cleaning liquid can flow to the shell along the horizontal direction and the shell is flushed by the fluid with a stable parabolic shape through the structure.

In some embodiments, the connection comprises a plurality of first connectors and at least one second connector; the second connector extends along the horizontal direction, two ends of the second connector are respectively connected with two adjacent first connectors, the second connector is arranged between the two adjacent first connectors in the horizontal direction and the vertical direction, and the second connector is used for receiving the cleaning liquid on the first connector positioned on the upper side of the second connector in the vertical direction and guiding the cleaning liquid to the first connector positioned on the lower side of the second connector in the vertical direction; the two first connectors positioned at the two ends of the connecting part are respectively connected with the bearing part and the drainage part.

In the above technical scheme, the connecting portion has a plurality of first connecting bodies and at least one second connecting body, two first connecting bodies at both ends of the connecting portion link to each other with the adapting portion and the drainage portion respectively, the second connecting body is arranged along the horizontal direction, both ends of the second connecting body in the horizontal direction are connected with two adjacent first connecting bodies respectively, and the second connecting body is located between two adjacent first connecting bodies in the horizontal direction and the vertical direction, so that the connecting portion forms a ladder structure, thereby enabling the second connecting body to accept the cleaning liquid on the first connecting body located on the upper side in the vertical direction, and guiding the cleaning liquid to the first connecting body located on the lower side in the vertical direction, thereby enabling the cleaning liquid adopting the connecting portion of the structure to present a form of multistage waterfall flow on the connecting portion, being favorable for further consumed kinetic energy of the cleaning liquid to reduce the scouring force of the cleaning liquid to the housing, and being favorable for further stable flow rate.

In some embodiments, the first connecting body has opposite first and second ends in its direction of extension; in the horizontal direction, the first end is closer to the receptacle than the second end; in the vertical direction, the first end is closer to the receiving portion than the second end.

In the above technical scheme, the first end of the first connector is closer to the receiving part than the second end in the horizontal direction and the vertical direction, that is, the first connector is in an inclined arrangement state relative to the second connector, so that the inclined first connector can be used for cleaning liquid to flow, the surface of the first connector, through which the cleaning liquid flows, and the surface of the second connector, through which the cleaning liquid flows, form an obtuse angle arrangement, and therefore when the cleaning liquid flows through the first connector, the kinetic energy of the cleaning liquid can be reduced through friction between the first connector and the cleaning liquid, and further the scouring force of the cleaning liquid to the shell can be further reduced.

In some embodiments, the connecting portion has an arc structure, and two ends of the connecting portion are respectively connected to the receiving portion and the drainage portion.

In some embodiments, the connecting portion is a flat plate structure which is obliquely arranged, and two ends of the connecting portion are respectively connected to the receiving portion and the drainage portion.

In some embodiments, the surface cleaning apparatus includes two of the drainage pieces disposed on both sides of the positioning mechanism in a horizontal direction.

In the above technical scheme, the positioning mechanism is provided with the drainage piece in the both sides on the horizontal direction to make two drainage pieces wash the both sides of shell in the horizontal direction after the drainage of washing liquid respectively, thereby can carry out the washing of the aspect to the lateral surface of shell, and be favorable to improving the cleaning efficiency to the shell in actual production process.

In some embodiments, the surface cleaning apparatus further comprises a reservoir for recovering the cleaning fluid after cleaning the housing; the liquid supply mechanism is used for conveying the cleaning liquid in the liquid storage tank to the drainage piece.

In the technical scheme, the surface cleaning device is further provided with the liquid storage tank, the cleaning liquid can be recovered after the outer surface of the shell is cleaned through the liquid storage tank, and the liquid supply mechanism can convey the cleaning liquid in the liquid storage tank to the drainage piece again so as to reutilize the cleaning liquid.

In some embodiments, the liquid storage tank is arranged on the lower side of the positioning mechanism along the vertical direction, and is provided with a first liquid storage tank for inserting one end of the shell, which is away from the opening in the vertical direction, and the first liquid storage tank is used for recovering the cleaning liquid after cleaning the shell.

In the technical scheme, the liquid storage tank is arranged on the lower side of the positioning mechanism in the vertical direction, so that the liquid storage tank is positioned on the lower side of the shell in the vertical direction, and the first liquid storage tank of the liquid storage tank can be used for receiving cleaning liquid after the shell is cleaned, so that the structure is simple, and the realization is convenient. In addition, the first reservoir is used for supplying the shell to deviate from open-ended one end and insert in vertical direction to make the washing liquid of retrieving in the first reservoir can wash the bottom of shell in vertical direction simultaneously, and then is favorable to promoting the cleaning efficiency to the surface of shell.

In some embodiments, the reservoir further has a second reservoir positioned on one side of the first reservoir; an overflow hole is formed in the side wall of the first liquid storage tank, the overflow hole is communicated with the first liquid storage tank and the second liquid storage tank, and the overflow hole is used for guiding the cleaning liquid in the first liquid storage tank into the second liquid storage tank; the liquid supply mechanism is used for conveying the cleaning liquid in the second liquid storage tank to the drainage piece.

In the technical scheme, the liquid storage tank is further provided with the second liquid storage tank, the second liquid storage tank is arranged on one side of the first liquid storage tank, and the overflow holes used for communicating the first liquid storage tank and the second liquid storage tank are formed in the side wall of the first liquid storage tank, so that cleaning liquid in the first liquid storage tank can flow into the second liquid storage tank through the overflow holes when the height of the cleaning liquid in the first liquid storage tank in the vertical direction exceeds the height of the overflow holes in the vertical direction, the liquid level of the cleaning liquid in the first liquid storage tank can be guaranteed to be in a constant state, and the cleaning of the bottom of the shell is facilitated. In addition, the liquid supply mechanism is used for conveying the cleaning liquid of the second liquid storage tank to the drainage piece, so that the influence of the liquid supply mechanism on the liquid level of the cleaning liquid in the first liquid storage tank during conveying the cleaning liquid can be reduced, and the constant liquid level of the cleaning liquid in the first liquid storage tank can be further guaranteed.

In some embodiments, the surface cleaning apparatus further comprises a transport mechanism coupled to the positioning mechanism for driving the positioning mechanism to move.

In the above technical scheme, the surface cleaning device is further provided with a conveying mechanism, and the conveying mechanism can drive the positioning mechanism to move so as to drive the shell to move, thereby being beneficial to realizing the cleaning of the shell in a flow way, improving the degree of automation of the surface cleaning device, and further effectively improving the production efficiency of the battery monomers.

In a second aspect, embodiments of the present application further provide a cleaning line including a plurality of the surface cleaning apparatuses described above.

In a third aspect, embodiments of the present application further provide a surface cleaning method for cleaning a housing of a battery cell, the housing having an opening, the surface cleaning method including:

the shell is connected with the opening of the shell through a positioning mechanism and is blocked;

providing a cleaning liquid for cleaning the shell through a liquid supply mechanism;

the cleaning liquid is guided to the outer side surface of the shell through a drainage piece so as to clean the outer side surface of the shell;

wherein, the drainage piece set up in at least one side of positioning mechanism.

In some embodiments, the surface cleaning method further comprises:

inserting one end of the shell, which is away from the opening in the vertical direction, into the cleaning liquid in a first liquid storage tank of the liquid storage tank;

the liquid storage tank is arranged on the lower side of the positioning mechanism along the vertical direction, and the first liquid storage tank of the liquid storage tank is used for recycling and cleaning the cleaning liquid after the shell.

In the technical scheme, one end of the shell, deviating from the opening in the vertical direction, is inserted into the cleaning liquid in the first liquid storage tank, so that the outer side surface of the shell can be cleaned, the bottom of the shell in the vertical direction can be cleaned, and the surface cleaning method is further adopted to be favorable for improving the cleaning efficiency of the outer surface of the shell.

In some embodiments, in the vertical direction, the depth of the housing inserted into the cleaning solution of the first reservoir is greater than or equal to the height of the rounded corners; wherein, the one end of the shell facing away from the opening in the vertical direction is formed with the fillet.

In the technical scheme, the depth of inserting the end, deviating from the opening, of the shell in the cleaning liquid is set to be greater than or equal to the height of the round corners of the shell, so that the whole bottom of the shell in the vertical direction is soaked in the cleaning liquid, the whole bottom of the shell can be cleaned by the cleaning liquid in the first liquid storage tank, and the surface cleaning method is further adopted to be beneficial to improving the cleaning quality of the bottom of the shell.

In some embodiments, in the vertical direction, the depth of the housing inserted within the cleaning fluid of the first reservoir is less than or equal to 5% of the height of the housing; the positioning mechanism is connected to the conveying mechanism, and the conveying mechanism is used for driving the positioning mechanism to move.

According to the technical scheme, the depth of inserting the end, deviating from the opening, of the shell in the cleaning liquid is set to be less than or equal to 5% of the height of the shell, so that resistance of the cleaning liquid to the shell can be reduced when the conveying mechanism drives the shell to move, shaking of the shell in the moving process is reduced, and stability and reliability of the shell in the cleaning process can be effectively improved by adopting the surface cleaning method.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a surface cleaning apparatus according to some embodiments of the present disclosure;

FIG. 2 is a schematic structural view of a housing provided in some embodiments of the present application;

FIG. 3 is a schematic structural view of a drainage member according to some embodiments of the present disclosure;

FIG. 4 is a schematic structural view of a drainage member according to further embodiments of the present disclosure;

FIG. 5 is a schematic structural view of a drainage member according to further embodiments of the present application;

FIG. 6 is a cross-sectional view of a fluid reservoir according to some embodiments of the present disclosure;

FIG. 7 is an enlarged view of a portion of the surface cleaning apparatus shown in FIG. 1 at A;

FIG. 8 is a partial cross-sectional view of a surface cleaning apparatus provided in some embodiments of the present application;

fig. 9 is a schematic flow chart of a surface cleaning method according to some embodiments of the present application.

Icon: 100-a surface cleaning device; 10-a positioning mechanism; 11-a jig; 12-a hanger; 20-a liquid supply mechanism; 21-a conveying pipe; 22-pumping means; a 23-filter; 24-control valve; 30-drainage piece; 31-a receiving portion; 32-drainage part; 33-a connection; 331-first connector; 332-a second linker; 34-a fixing part; 40-a housing; 41-opening; 42-a bottom wall; 43-side walls; 44-fillets; 50-cleaning liquid; 60-a liquid storage tank; 61-a first reservoir; 62-a second reservoir; 63-overflow aperture; 70-a conveying mechanism; 71-connecting piece; 72-a drive assembly; x-horizontal direction; y-vertical direction; z-preset direction.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.

The term "plurality" as used herein refers to more than two (including two).

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited by the embodiment of the present application. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft pack battery cell are not limited thereto.

The battery monomer includes shell, end cover, electrode assembly and electrolyte, and the one end of shell has the opening, and electrode assembly and electrolyte all hold in the shell, and the end cover is used for closing in the opening of shell to the opening of shutoff shell. The electrode assembly consists of a positive electrode plate, a negative electrode plate and a separation film. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together.

The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

Batteries are widely applied in the world nowadays, and are also an important component of new energy development. With the increasing technical requirements of batteries on the surfaces of the outer surfaces of the battery monomers, conventional alcohol wiping, laser cleaning and plasma cleaning cannot meet the technical requirements, and chemical agent cleaning methods are required to be introduced for carrying out surface treatment (including but not limited to degreasing, acid cleaning, passivation, water cleaning and other procedures).

The inventor finds that in order to realize the omnibearing cleaning of the outer surface of the shell of the battery cell and improve the cleaning efficiency, an automatic production line is generally adopted to clean the outer surface of the shell at present so as to improve the production efficiency. In the prior art, the outer surface of the shell of the battery cell is often treated in a spraying mode and the like, under the cleaning mode, although a sealing tape, a sealing piece or a jig is adopted to seal and protect the end cover of the battery cell or the opening of the shell in the cleaning process, a tiny gap is inevitably reserved under the sealing condition, and because the flushing force of the cleaning liquid on the shell of the battery cell is large, a great amount of atomization phenomenon is extremely easy to occur in the cleaning liquid spraying process, so that the capillary phenomenon (capillary action caused by surface tension) of the cleaning liquid on the sealing tape, the sealing piece or the jig is easy to aggravate, the cleaning liquid is led to permeate into the shell, and then the cleaning liquid remains in the shell, and after the battery cell is assembled, the cleaning liquid in the shell is easy to cause the short circuit phenomenon of the battery cell or influence the performance of the battery cell. In addition, the shell is easy to cause the phenomenon that the shell is deformed locally under the larger scouring force of the cleaning liquid, so that the sealing gap between the jig and the shell is enlarged, the cleaning liquid is easy to permeate into the shell, the quality of the battery monomer is further influenced, or the phenomenon that the battery monomer is damaged is caused, and the rejection rate of the battery monomer is higher.

Based on the above, in order to solve the problem that the cleaning liquid easily permeates into the outer shell when cleaning the outer surface of the outer shell of the battery cell, the inventor has conducted intensive studies and has devised a surface cleaning device, the surface cleaning device is provided with a positioning mechanism, a liquid supply mechanism and a drainage member, the positioning mechanism can position the outer shell, the liquid supply mechanism is used for supplying the cleaning liquid, the drainage member is arranged on one side of the positioning mechanism, and the drainage member can guide the cleaning liquid supplied by the liquid supply mechanism to the outer side surface of one side of the outer shell so as to clean the outer side surface of the outer shell.

The surface cleaning device adopting the structure can reduce the kinetic energy of the cleaning fluid by draining the cleaning fluid provided by the fluid supply mechanism through the drainage piece when the shell is cleaned, so as to reduce the scouring force of the cleaning fluid on the shell, thereby being beneficial to solving the problem that the scouring force of the cleaning fluid on the battery shell is larger, reducing the phenomenon that the shell is locally deformed, reducing the atomization phenomenon of the cleaning fluid, being beneficial to relieving the capillary phenomenon of the cleaning fluid on the positioning mechanism and the shell, reducing the risk of the cleaning fluid penetrating into the shell, and further being beneficial to reducing the influence on the quality of the battery and reducing the phenomenon that the battery is damaged.

The embodiment of the application provides a surface cleaning device, and it can improve current battery monomer production line and cause the phenomenon of washing liquid infiltration shell easily when wasing the surface of battery monomer's shell to influence battery monomer's quality or cause the phenomenon that battery monomer damaged appears, and then lead to the higher scheduling problem of battery monomer's disability rate, the following concrete structure that combines the figure to describe surface cleaning device in detail.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a surface cleaning apparatus 100 according to some embodiments of the present application, and fig. 2 is a schematic structural diagram of a housing 40 according to some embodiments of the present application. The embodiment of the application provides a surface cleaning device 100, and the surface cleaning device 100 comprises a positioning mechanism 10, a liquid supply mechanism 20 and a drainage piece 30. The positioning mechanism 10 is used for connecting with the housing 40 and blocking the opening 41 of the housing 40. The liquid supply mechanism 20 is used to supply a cleaning liquid 50 for cleaning the housing 40. The drainage member 30 is disposed on at least one side of the positioning mechanism 10, and the drainage member 30 is configured to guide the cleaning solution 50 to an outer side surface of the housing 40, so as to clean the outer side surface of the housing 40, where the outer side surface of the housing 40 intersects with a surface where the opening 41 is located.

In the actual production process, the drainage member 30 is disposed on one side of the positioning mechanism 10 in the horizontal direction X, so that the drainage member 30 can guide the cleaning fluid 50 onto the outer side surface of the one side of the housing 40 in the horizontal direction X, and the cleaning fluid 50 washes the outer side surface of the housing 40 in a parabolic shape after being guided by the drainage member 30.

Illustratively, the opening 41 of the housing 40 is disposed at one end of the housing 40 in the vertical direction Y, and the outer side surface of the housing 40 in the horizontal direction X is perpendicular to the surface where the opening 41 is located.

Alternatively, the cleaning liquid 50 may be a chemical liquid for degreasing, washing, pickling, washing, passivating, washing, or washing with pure water, etc., the outer surface of the housing 40.

In some embodiments, as shown in fig. 1, the positioning mechanism 10 includes a jig 11 and a hanging member 12, the jig 11 is used for fixing the housing 40 and blocking the opening 41, the hanging member 12 is connected to the jig 11, and the hanging member 12 is used for hanging the jig 11, so that the housing 40 is hung on the lower side of the positioning mechanism 10 in the vertical direction Y. The specific structure of the jig 11 can be referred to in the related art, and will not be described herein.

The jig 11 is made of a non-metal material with a surface tension lower than 40mN/m, and the surface tension of the jig 11 can be reduced by the jig 11 with the structure, so that the wettability of the jig 11 by the cleaning liquid 50 is reduced, and the capillary phenomenon between the jig 11 and the housing 40 is relieved. For example, the jig 11 may be made of teflon, acryl, or the like.

Of course, in other embodiments, the positioning mechanism 10 may also have other structures, for example, the positioning mechanism 10 includes a fixture table and a fixture 11, where the fixture table is used to place the housing 40 and is used to clamp the housing 40 to fix the housing 40, and the fixture 11 is disposed at an end of the housing 40 near the opening 41 in the vertical direction Y to seal the opening 41.

It should be noted that, the surface cleaning apparatus 100 provided in the embodiment of the present application may not only clean the housing 40 alone, but also clean the assembled battery cell. When the individual shell 40 is cleaned, the jig 11 of the positioning mechanism 10 is used for sealing the opening 41 of the shell 40 so as to relieve adverse effects on the quality of the battery cells assembled subsequently caused by the entering of the cleaning liquid 50 into the shell 40; when the assembled battery cell is cleaned, the jig 11 of the positioning mechanism 10 is used for sealing the end cover of the battery cell, so that the phenomenon that the battery cell is scrapped due to the fact that some electric connection parts arranged on the end cover are in contact short circuit with the cleaning liquid caused by the cleaning liquid 50 entering the end cover of the battery cell is reduced.

The positioning mechanism 10 can fix the outer shell 40 and seal the opening 41 of the outer shell 40, so that the drainage member 30 arranged on one side of the positioning mechanism 10 in the horizontal direction X can guide the cleaning liquid 50 provided by the liquid supply mechanism 20 to one side of the outer shell 40 in the horizontal direction X, and the outer side surface of the outer shell 40 is washed, so that the outer surface of the outer shell 40 is washed. Although the opening 41 of the housing 40 is plugged by the positioning mechanism 10, a tiny gap is inevitably remained between the positioning mechanism 10 and the housing 40, when the surface cleaning device 100 adopting the structure is used for cleaning the housing 40, on one hand, the kinetic energy of the cleaning liquid 50 provided by the liquid supply mechanism 20 can be reduced by draining the cleaning liquid 50 through the drainage piece 30, so as to reduce the scouring force of the cleaning liquid 50 on the housing 40, thereby being beneficial to reducing the deformation phenomenon of the housing 40 under the condition of larger scouring force of the cleaning liquid 50, and further effectively relieving the situation that the tiny gap between the housing 40 and the positioning mechanism 10 is enlarged, so as to reduce the risk of the cleaning liquid 50 entering the housing 40; on the other hand, after the cleaning solution 50 provided by the solution supply mechanism 20 is drained through the drainage piece 30, the cleaning solution 50 can be used for flushing the outer side surface of the shell 40 by using fluid in a parabolic form, and the cleaning solution 50 can flow on the outer side surface of the shell 40, so that the phenomenon of atomization of the cleaning solution 50 can be effectively reduced, the situation that the atomized cleaning solution 50 generates capillary phenomenon on the positioning mechanism 10 and the shell 40 is relieved, the risk that the cleaning solution 50 permeates into the shell 40 from a tiny gap between the positioning mechanism 10 and the shell 40 is reduced, and further the phenomenon that the quality of a battery monomer is influenced or the battery monomer is damaged after the cleaning solution 50 enters the shell 40 can be reduced, so that the problem that the rejection rate of the battery monomer is higher in the production process is solved.

Referring to fig. 1 and further referring to fig. 3, fig. 3 is a schematic structural diagram of a drainage member 30 according to some embodiments of the present application. The drainage member 30 includes a receiving portion 31, a drainage portion 32, and a connection portion 33, and the receiving portion 31, the connection portion 33, and the drainage portion 32 are sequentially arranged in the vertical direction Y. The receiving portion 31 is used for receiving the cleaning liquid 50 provided by the liquid supply mechanism 20. The connection portion 33 is connected between the receiving portion 31 and the drainage portion 32, and the connection portion 33 is used for guiding the cleaning liquid 50 located on the receiving portion 31 to the drainage portion 32. The drainage portion 32 extends in the horizontal direction X, and the drainage portion 32 is for guiding the cleaning liquid 50 to the outer side surface of the housing 40.

The receiving portion 31 is used for receiving the cleaning solution 50 provided by the solution supply mechanism 20, that is, the solution supply mechanism 20 firstly conveys the cleaning solution 50 to the receiving portion 31 of the drainage member 30, then the cleaning solution 50 on the receiving portion 31 is guided to the drainage portion 32 through the connecting portion 33, and finally the cleaning solution 50 is guided to one side of the housing 40 in the horizontal direction X through the drainage member 30.

Alternatively, the receiving portion 31 is a plate-like structure extending along the horizontal direction X, and in other embodiments, the receiving portion 31 may also be an arc-shaped structure recessed downward along the vertical direction Y, so that the receiving portion 31 forms a buffer tank for receiving the cleaning liquid 50 provided by the liquid supply mechanism 20.

Optionally, in fig. 3, the drainage member 30 may further include a fixing portion 34, where the fixing portion 34 is connected to the receiving portion 31, and the fixing portion 34 is used for fixing to a fixture to mount and fix the drainage member 30.

It should be noted that, in other embodiments, the drainage member 30 may be integrally formed as an arc-shaped structure or a flat plate structure.

The drainage member 30 has a receiving portion 31 for receiving the cleaning solution 50 provided by the liquid supply mechanism 20, so that the cleaning solution 50 can be buffered and temporarily stored on the receiving portion 31 of the drainage member 30 before flowing to the connection portion 33, so that the receiving portion 31 can stabilize the cleaning solution 50 provided by the liquid supply mechanism 20, which is beneficial to improving the stability of the flow rate of the cleaning solution 50 flowing from the receiving portion 31 to the connection portion 33, and further the cleaning solution 50 can flush the housing 40 at a constant flow rate. In addition, by arranging the drainage portion 32 along the horizontal direction X, the cleaning liquid 50 on the receiving portion 31 is guided onto the drainage portion 32 by the connection portion 33, and then the cleaning liquid 50 can flow to the housing along the horizontal direction X and the housing 40 is flushed by the fluid in a stable parabolic form, so that the cleaning quality of the housing 40 is improved.

Further, the drainage portion 32 is closer to the positioning mechanism 10 than the receiving portion 31 in the horizontal direction X, and the drainage portion 32 is located on the lower side of the receiving portion 31 in the vertical direction Y.

By disposing the drainage portion 32 closer to the receiving portion 31 in the horizontal direction X and disposing the drainage portion 32 on the lower side of the receiving portion 31 in the vertical direction Y, the connection portion 33 forms the drainage member 30 of a stepped structure after being connected between the receiving portion 31 and the drainage portion 32, thereby facilitating the guiding of the cleaning liquid 50 to the outer side surface of the housing 40, so that by this structure, it is achieved that the cleaning liquid 50 can flow toward the housing 40 in the horizontal direction X and the housing 40 is washed by the fluid exhibiting a stable parabolic shape.

Referring to fig. 3, the connection portion 33 includes a plurality of first connection bodies 331 and at least one second connection body 332 according to some embodiments of the present application. The second connector 332 extends along a horizontal direction X, two ends of the second connector 332 are respectively connected to two adjacent first connectors 331, the second connector 332 is disposed between the two adjacent first connectors 331 in the horizontal direction X and the vertical direction Y, the second connector 332 is configured to receive the cleaning solution 50 on the first connector 331 located on the upper side of the second connector 332 in the vertical direction Y, and guide the cleaning solution 50 to the first connector 331 located on the lower side of the second connector 332 in the vertical direction Y. The two first connectors 331 located at both ends of the connecting portion 33 are connected to the receiving portion 31 and the drainage portion 32, respectively.

The second connectors 332 extend along the horizontal direction X, two ends of the second connectors 332 are respectively connected to two adjacent first connectors 331, the second connectors 332 are disposed between two adjacent first connectors 331 in the horizontal direction X and the vertical direction Y, that is, the first connectors 331 and the second connectors 332 are alternately connected in sequence, and after being connected to each other, the connecting portions 33 form a step structure, so that the second connectors 332 can receive the cleaning liquid 50 on the first connector 331 located on the upper side in the vertical direction Y, and guide the cleaning liquid 50 to the first connector 331 located on the lower side in the vertical direction Y, that is, the cleaning liquid 50 can flow in sequence on the first connector 331 and the second connector 332, so that the whole drainage member 30 forms a multi-step structure.

According to the principle of conservation of energy, when the spacing between the receiving portion 31 and the drainage portion 32 in the horizontal direction X and the vertical direction Y is uniform, that is, in fig. 3, when the magnitudes of h and d are constant, the connection portion 33 is provided in a multistage stepped structure to facilitate reducing the kinetic energy of the cleaning liquid 50, for example, since the magnitudes of h and d are constant so that the cleaning liquid 50 has a potential energy of a constant value, when the cleaning liquid 50 flows through the connection portion 33, a part of the potential energy of the cleaning liquid 50 is consumed by the frictional damping of the first connection body 331 and the second connection body 332 (when the distance by which the cleaning liquid 50 flows on the connection portion 33 is larger, the potential energy consumed by the frictional damping is larger), and a part of the potential energy of the cleaning liquid 50 is consumed by the heat generated by the collision between the cleaning liquid 50 and the second connection body 332, so that the connection portion 33 of the multistage stepped structure facilitates reducing the kinetic energy of the cleaning liquid 50.

In fig. 3, the number of the first connectors 331 is two, the number of the second connectors 332 is one, the second connectors 332 are connected between the two first connectors 331, and two ends of the second connectors 332 are respectively connected to the receiving portion 31 and the drainage portion 32 through one first connector 331, so that the drainage member 30 forms a multi-stage ladder structure. Of course, in other embodiments, the first connectors 331 and the second connectors 332 may be other numbers, for example, three first connectors 331 and two second connectors 332, and the first connectors 331 and the second connectors 332 are alternately connected in turn.

Alternatively, the drainage member 30 is an integral structure, i.e., the receiving portion 31, the drainage portion 32, and the connecting portion 33 are an integral structure. In other embodiments, the drainage member 30 may be a split structure, for example, the receiving portion 31, the drainage portion 32, and the connecting portion 33 are connected by adhesion, bolting, or clamping.

The connecting part 33 with the structure enables the cleaning liquid 50 to present a multi-stage waterfall flow form on the connecting part 33, which is beneficial to further consuming the kinetic energy of the cleaning liquid 50, reducing the scouring force of the cleaning liquid 50 to the shell 40 and being beneficial to further stabilizing the flow rate of the cleaning liquid 50.

Further, as shown in fig. 3, the first connector 331 has opposite first and second ends in the extending direction thereof. In the horizontal direction X, the first end is closer to the receiving portion 31 than the second end. In the vertical direction Y, the first end is closer to the receiving portion 31 than the second end.

In the horizontal direction X, the first end is closer to the receiving portion 31 than the second end, and in the vertical direction Y, the first end is closer to the receiving portion 31 than the second end, that is, the first connecting body 331 is obliquely arranged relative to the second connecting body 332, that is, the arrangement direction of the first connecting body 331 is set at a non-zero angle with respect to the horizontal direction X, and the oblique direction of the first connecting body 331 is that the lower end (the second end) of the first connecting body 331 in the vertical direction Y is closer to the drainage portion 32, that is, the receiving surface of the first connecting body 331 for receiving the cleaning liquid 50 is arranged at an obtuse angle with the receiving surface of the second connecting body 332 for receiving the cleaning liquid 50.

By setting the first connector 331 in an inclined state, the first connector 331 after being arranged in an inclined manner can allow the cleaning liquid 50 to flow, so that the kinetic energy of the cleaning liquid 50 can be reduced through the friction between the first connector 331 and the cleaning liquid 50 when the cleaning liquid 50 flows through the first connector 331, and further the scouring force of the cleaning liquid 50 to the housing 40 can be further reduced.

Referring to fig. 4, fig. 4 is a schematic structural view of a drainage member 30 according to still other embodiments of the present application. The connecting portion 33 has an arc-shaped structure, and both ends of the connecting portion 33 are respectively connected to the receiving portion 31 and the drainage portion 32.

Referring to fig. 5, fig. 5 is a schematic structural view of a drainage member 30 according to still other embodiments of the present application. The connection portion 33 has a flat plate structure arranged obliquely, and both ends of the connection portion 33 are connected to the receiving portion 31 and the drainage portion 32, respectively.

According to some embodiments of the present application, referring to fig. 1, the surface cleaning apparatus 100 includes two drainage members 30, and the two drainage members 30 are disposed on two sides of the positioning mechanism 10 in the horizontal direction X.

Wherein, two drainage pieces 30 are oppositely arranged at two sides of the positioning mechanism 10 in the horizontal direction X, so that the two drainage pieces 30 can respectively guide the cleaning liquid 50 to the outer side surfaces of two sides of the shell 40 in the horizontal direction X.

The number of the liquid supply mechanisms 20 may be one or two, that is, one liquid supply mechanism 20 may supply the cleaning liquid 50 to the two drainage members 30, or the two liquid supply mechanisms 20 may supply the cleaning liquid 50 to the one drainage member 30, respectively. Illustratively, in FIG. 1, the surface cleaning apparatus 100 is provided with two liquid supply mechanisms 20.

The two sides of the positioning mechanism 10 in the horizontal direction X are provided with the drainage pieces 30, so that the two drainage pieces 30 can clean the two sides of the housing 40 in the horizontal direction X after draining the cleaning liquid 50 respectively, so that the outer side surface of the housing 40 can be cleaned in an all-around manner, and the cleaning efficiency of the housing 40 is improved in the actual production process.

With continued reference to fig. 1, according to some embodiments of the present application, the surface cleaning apparatus 100 further includes a reservoir 60, the reservoir 60 being configured to recover the cleaning fluid 50 after cleaning the housing 40. The liquid supply mechanism 20 is used for delivering the cleaning liquid 50 in the liquid reservoir 60 to the drainage member 30.

Wherein the reservoir 60 is disposed below the positioning mechanism 10 in the vertical direction Y such that the reservoir 60 is located below the housing 40 in the vertical direction Y.

In some embodiments, the fluid supply mechanism 20 includes a delivery tube 21 and a pumping device 22, where the delivery tube 21 has an opposite input end and an output end, the input end is inserted into the fluid reservoir 60, and the output end is disposed corresponding to the receiving portion 31 of the flow guide 30. The pumping device 22 is disposed on the delivery tube 21, and the pumping device 22 is used for pumping the cleaning liquid 50 in the liquid reservoir 60 to the drainage member 30 through the delivery tube 21.

Alternatively, the pumping device 22 may be a screw pump, a plunger pump, a diaphragm pump, a gear pump, a vane pump, or the like.

Further, the liquid supply mechanism 20 may further include a filter 23, the filter 23 is disposed on the delivery pipe 21, and the filter 23 is used for filtering the cleaning liquid 50 in the delivery pipe 21. The cleaning liquid 50 in the conveying pipe 21 can be filtered through the filter 23 arranged on the conveying pipe 21, so that impurities in the cleaning liquid 50 can be filtered, and the quality of the cleaning liquid 50 can be improved. The specific structure of the filter 23 can be referred to in the related art, and will not be described herein.

Optionally, the liquid supply mechanism 20 may further include a control valve 24, where the control valve 24 is disposed on the delivery pipe 21, and the control valve 24 is used to control the flow rate of the cleaning liquid 50 in the delivery pipe 21.

The position of the control valve 24 is not limited, and the control valve 24 may be disposed between the input end of the delivery pipe 21 and the pumping device 22, between the pumping device 22 and the filter 23, or between the filter 23 and the output end of the delivery pipe 21. In this embodiment, in fig. 1, a control valve 24 is provided between the filter 23 and the output end of the delivery pipe 21.

Illustratively, the control valve 24 is a throttle valve, by which the flow rate of the cleaning liquid 50 in the delivery pipe 21 can be controlled, so that the delivery amount of the cleaning liquid 50 can be further precisely controlled to meet the production needs. Of course, in other embodiments, the control valve 24 may also be a shut-off valve, a regulator valve, or the like.

The cleaning solution 50 after cleaning the outer surface of the shell 40 can be recovered through the liquid storage tank 60, and the cleaning solution 50 in the liquid storage tank 60 can be conveyed to the drainage piece 30 again by the liquid supply mechanism 20 so as to reutilize the cleaning solution 50, and the surface cleaning device 100 adopting the structure realizes the recycling of the cleaning solution 50, so that the consumption of the cleaning solution 50 is reduced in the cleaning process of the shell 40, and the production cost of a battery monomer can be effectively reduced.

Referring to fig. 1 and further referring to fig. 6, fig. 6 is a cross-sectional view of a liquid reservoir 60 according to some embodiments of the present application. The liquid reservoir 60 is disposed at the lower side of the positioning mechanism 10 along the vertical direction Y, and the liquid reservoir 60 has a first liquid reservoir 61 into which one end of the housing 40 facing away from the opening 41 in the vertical direction Y is inserted, the first liquid reservoir 61 being used for recovering the cleaning liquid 50 after cleaning the housing 40.

The first liquid storage groove 61 of the liquid storage tank 60 is used for inserting one end of the housing 40 away from the opening 41 in the vertical direction Y, that is, the opening 41 of the housing 40 is disposed at one end of the housing 40 in the vertical direction Y, and one end of the housing 40 close to the opening 41 in the vertical direction Y is connected to the positioning mechanism 10, so that the housing 40 hangs on the lower side of the positioning mechanism 10 along the vertical direction Y, and one end of the housing 40 away from the opening 41 in the vertical direction Y can be inserted into the cleaning liquid 50 of the first liquid storage groove 61 during the cleaning process of the housing 40, so as to clean the bottom of the housing 40 in the vertical direction Y.

In some embodiments, as shown in fig. 7, fig. 7 is an enlarged view of a portion of the surface cleaning apparatus 100 shown in fig. 1 at a. The housing 40 includes a bottom wall 42 and a side wall 43, the side wall 43 is provided around the bottom wall 42, one end of the side wall 43 in the vertical direction Y is connected to the bottom wall 42 and forms a rounded corner 44 at the connection, and the other end of the side wall 43 in the vertical direction Y forms an opening 41. In the vertical direction Y, the depth of the cleaning liquid 50 in the first liquid storage tank 61 for the housing 40 to be inserted into the end away from the opening 41 is greater than or equal to the height of the round corner 44, so that the cleaning liquid 50 in the first liquid storage tank 61 can clean the entire bottom of the housing 40 in the vertical direction Y, which is beneficial to improving the cleaning quality of the bottom of the housing 40 in the vertical direction Y.

The liquid storage tank 60 is arranged on the lower side of the positioning mechanism 10 in the vertical direction Y, so that the liquid storage tank 60 is positioned on the lower side of the shell 40 in the vertical direction Y, and the first liquid storage tank 61 of the liquid storage tank 60 can receive the cleaning liquid 50 after the shell 40 is cleaned, so that the structure is simple, and the cleaning liquid is convenient to realize. In addition, the first liquid storage tank 61 is used for inserting one end of the housing 40, which is far away from the opening 41 in the vertical direction Y, so that the cleaning liquid 50 recovered in the first liquid storage tank 61 can simultaneously clean the bottom of the housing 40 in the vertical direction Y, and further the cleaning efficiency of the outer surface of the housing 40 is improved.

According to some embodiments of the present application, referring to fig. 1 and 6, the reservoir 60 further has a second reservoir 62, the second reservoir 62 being located on one side of the first reservoir 61. The side wall of the first liquid storage tank 61 is provided with an overflow hole 63, the overflow hole 63 is communicated with the first liquid storage tank 61 and the second liquid storage tank 62, and the overflow hole 63 is used for guiding the cleaning liquid 50 in the first liquid storage tank 61 into the second liquid storage tank 62. The liquid supply mechanism 20 is used for conveying the cleaning liquid 50 in the second liquid storage tank 62 to the drainage member 30.

Wherein the second liquid storage tank 62 is located at one side of the first liquid storage tank 61, an overflow hole 63 is formed on a tank sidewall of the first liquid storage tank 61, the overflow hole 63 is used for guiding the cleaning liquid 50 in the first liquid storage tank 61 into the second liquid storage tank 62, that is, the overflow hole 63 which is communicated with the first liquid storage tank 61 and the second liquid storage tank 62 is formed on the tank sidewall of the first liquid storage tank 61, when the height of the cleaning liquid 50 in the first liquid storage tank 61 in the vertical direction Y exceeds the height of the overflow hole 63 in the vertical direction Y, the cleaning liquid 50 in the first liquid storage tank 61 can flow into the second liquid storage tank 62 through the overflow hole 63.

Illustratively, two second liquid storage tanks 62 are provided, the liquid supply mechanism 20 is correspondingly arranged with the second liquid storage tanks 62, the two second liquid storage tanks 62 are respectively arranged at two sides of the first liquid storage tank 61 along the horizontal direction X, overflow holes 63 are respectively formed on two opposite tank side walls of the first liquid storage tank 61 along the horizontal direction X, and the heights of the overflow holes 63 in the vertical direction Y are the same, so that the cleaning liquid 50 in the first liquid storage tank 61 can flow to the second liquid storage tanks 62 at two sides.

Alternatively, the number of overflow holes 63 provided in one tank side wall of the first liquid storage tank 61 may be one or plural, and when the number of overflow holes 63 provided in one tank side wall of the first liquid storage tank 61 is plural, the heights of the plurality of overflow holes 63 in the vertical direction Y are the same.

By providing the overflow hole 63 for communicating the first liquid storage tank 61 and the second liquid storage tank 62 on the tank sidewall of the first liquid storage tank 61, the cleaning liquid 50 in the first liquid storage tank 61 can flow into the second liquid storage tank 62 through the overflow hole 63, so that the liquid level of the cleaning liquid 50 in the first liquid storage tank 61 can be ensured to be in a constant state, and cleaning of the bottom of the housing 40 is facilitated. In addition, the liquid supply mechanism 20 is used for conveying the cleaning liquid 50 in the second liquid storage tank 62 to the drainage member 30, so that the influence of the liquid supply mechanism 20 on the liquid level of the cleaning liquid 50 in the first liquid storage tank 61 when conveying the cleaning liquid 50 can be reduced, and the constant liquid level of the cleaning liquid 50 in the first liquid storage tank 61 can be further ensured.

Referring to fig. 1 and further referring to fig. 8, fig. 8 is a partial cross-sectional view of a surface cleaning apparatus 100 according to some embodiments of the present application. The surface cleaning apparatus 100 further includes a conveying mechanism 70, the conveying mechanism 70 is connected to the positioning mechanism 10, and the conveying mechanism 70 is used for driving the positioning mechanism 10 to move.

The conveying mechanism 70 is used for driving the positioning mechanism 10 to move along a preset direction Z, so as to drive the housing 40 to move along the preset direction Z, wherein the preset direction Z is perpendicular to the arrangement direction of the two drainage pieces 30 and is located in the horizontal plane, i.e., the preset direction Z is perpendicular to both the horizontal direction X and the vertical direction Y.

When the surface cleaning device 100 is used for cleaning the housing 40 of the battery unit, in the vertical direction Y, the depth of the cleaning liquid 50 in the first liquid storage tank 61 for the housing 40 to be inserted into the end away from the opening 41 is less than or equal to 5% of the height of the housing 40, so that the resistance of the cleaning liquid 50 to the housing 40 can be reduced in the process of the conveying mechanism 70 driving the housing 40 to move along the preset direction Z, and further the shaking phenomenon of the housing 40 in the moving process can be reduced.

In some embodiments, the conveyor mechanism 70 includes a connector 71 and a drive assembly 72, the drive assembly 72 being for securing to a fixture (illustratively, in this embodiment, the drive assembly 72 is secured to the ceiling of a building). The connecting piece 71 is connected to a driving assembly 72, and the driving assembly 72 is used for driving the connecting piece 71 to move along a preset direction Z. Wherein the connecting piece 71 is used for hanging the hanging piece 12 of the positioning mechanism 10.

Illustratively, the drive assembly 72 is a conveyor chain.

Alternatively, the positioning mechanism 10 may be multiple, and correspondingly, the number of the connecting members 71 of the conveying mechanism 70 may be multiple, and each connecting member 71 is used for connecting one positioning mechanism 10, so that the conveying mechanism 70 can drive the multiple positioning mechanisms 10 to move along the preset direction Z, so that the surface cleaning device 100 can clean multiple shells 40 at the same time, and further, the cleaning efficiency of the shells 40 is improved.

The positioning mechanism 10 can be driven to move by the conveying mechanism 70 so as to drive the shell 40 to move, so that the shell 40 is favorably cleaned in a flow manner, the degree of automation of the surface cleaning device 100 is improved, and the production efficiency of the battery monomers can be effectively improved.

According to some embodiments of the present application, there is also provided a cleaning line comprising a plurality of surface cleaning apparatuses 100 according to any of the above aspects.

Since the cleaning process of the battery cell case 40 is various, for example, degreasing, washing, acid washing, passivation, washing, pure washing, etc. By providing a plurality of surface cleaning apparatuses 100 in the cleaning line, a plurality of cleaning processes of the battery cell casing 40 can be completed, and the risk of penetration of different cleaning liquids 50 into the battery cell casing 40 can be effectively reduced in each process.

Referring to fig. 1-3 and 6, a surface cleaning apparatus 100 is provided according to some embodiments of the present application, including a positioning mechanism 10, a fluid supply mechanism 20, a drainage member 30, a reservoir 60, and a delivery mechanism 70. The positioning mechanism 10 comprises a hanging piece 12 and a jig 11, the hanging piece 12 is connected to a conveying mechanism 70, the conveying mechanism 70 is used for driving the hanging piece 12 to move, the jig 11 is connected to the hanging piece 12, and the jig 11 is used for hanging the shell 40 and blocking the opening 41 of the shell 40 so that the shell 40 is hung below the jig 11 along the vertical direction Y. The two drainage pieces 30 are arranged on two sides of the positioning mechanism 10 along the horizontal direction X so as to guide the cleaning liquid 50 provided by the liquid supply mechanism 20 to the outer side surfaces of two sides of the housing 40 in the horizontal direction X, the drainage piece 30 comprises a bearing portion 31, a connecting portion 33 and a drainage portion 32, the bearing portion 31 is used for bearing the cleaning liquid 50 provided by the liquid supply mechanism 20, the drainage portion 32 is used for guiding the cleaning liquid 50 to the outer side surface of the housing 40, the bearing portion 31 and the drainage portion 32 extend along the horizontal direction X, the drainage portion 32 and the bearing portion 31 are arranged at intervals along the horizontal direction X, the drainage portion 32 is closer to the positioning mechanism 10 than the bearing portion 31 in the horizontal direction X, the drainage portion 32 and the bearing portion 31 are arranged at intervals along the vertical direction Y, the drainage portion 32 is located on the lower side of the bearing portion 31 in the vertical direction Y, the connecting portion 33 is connected between the bearing portion 31 and the drainage portion 32, the connecting portion 33 is provided with two first connecting bodies 331 and one second connecting body 332, the second connecting body 332 extends along the horizontal direction X, and the two connecting bodies are located between the two connecting bodies 331 and the two connecting bodies 32 in the horizontal direction X and the vertical direction Y are respectively arranged at intervals along the vertical direction Y, and the two connecting bodies are arranged at intervals of the steps of the first connecting bodies 332 and the two connecting bodies 332. The liquid storage tank 60 is arranged below the positioning mechanism 10 along the vertical direction Y, the liquid storage tank 60 is provided with a first liquid storage tank 61 and second liquid storage tanks 62 which are positioned on two sides of the first liquid storage tank 61 in the horizontal direction X, the first liquid storage tank 61 is used for recovering the cleaning liquid 50 after the cleaning shell 40, the first liquid storage tank 61 is used for allowing one end of the shell 40, which is far away from the opening 41, to be inserted in the vertical direction Y, an overflow hole 63 which is communicated with the second liquid storage tank 62 is formed in the side wall of the first liquid storage tank 61, so that the cleaning liquid 50 in the first liquid storage tank 61 can flow into the second liquid storage tank 62 through the overflow hole 63, and the liquid supply mechanism 20 is used for conveying the cleaning liquid 50 in the second liquid storage tank 62 to the receiving part 31 of the drainage member 30.

The application further provides a surface cleaning method, please refer to fig. 9, fig. 9 is a schematic flow chart of the surface cleaning method provided in some embodiments of the application, and the surface cleaning method includes:

s100: the positioning mechanism 10 is connected with the shell 40 and seals the opening 41 of the shell 40;

s200: providing a cleaning liquid 50 for cleaning the housing 40 by the liquid supply mechanism 20;

s300: the cleaning liquid 50 is guided to the outer side of the housing 40 by the drainage member 30 to clean the outer side of the housing 40.

Wherein the drainage member 30 is disposed on at least one side of the positioning mechanism 10.

It should be noted that, the related structure of the surface cleaning apparatus 100 can be referred to the surface cleaning apparatus 100 provided in the foregoing embodiments, and will not be described herein.

With continued reference to fig. 9, in accordance with some embodiments of the present application, the surface method further includes:

s400: an end of the housing 40 facing away from the opening 41 in the vertical direction Y is inserted into the cleaning liquid 50 of the first liquid reservoir 61.

The liquid storage tank 60 is disposed at the lower side of the positioning mechanism 10 along the vertical direction Y, and the first liquid storage tank 61 of the liquid storage tank 60 is used for recovering the cleaning liquid 50 after the cleaning of the casing 40.

Further, the opening 41 of the housing 40 is provided at one end of the housing 40 in the vertical direction Y, and one end of the housing 40 near the opening 41 in the vertical direction Y is connected to the positioning mechanism 10 so that the housing 40 hangs from the lower side of the positioning mechanism 10 in the vertical direction Y.

In the above method, the sequence of step S400 is not limited. Step S400 may be performed first, then step S100 may be performed, step S400 may be provided between step S100 and step S200 or between step S200 and step S300, or step S300 may be performed first, and then step S400 may be performed. Illustratively, in fig. 9, step S400 is disposed after step S300, that is, step S300 is performed first and then step S400 is performed.

The end of the housing 40 facing away from the opening 41 in the vertical direction Y may be inserted into the cleaning liquid 50 in the first liquid reservoir 61, or may not be inserted into the cleaning liquid 50 in the first liquid reservoir 61. If one end of the housing 40 facing away from the opening 41 in the vertical direction Y is not inserted into the cleaning liquid 50 in the first liquid storage tank 61, that is, the bottom of the housing 40 is not in contact with the cleaning liquid 50 in the first liquid storage tank 61, at this time, the bottom of the housing 40 can only be naturally infiltrated to the outer surface of the bottom of the housing 40 by the cleaning liquid 50 flowing down from the side surface of the housing 40 for cleaning, that is, the bottom of the housing 40 needs to be infiltrated to the outer surface of the bottom of the housing 40 by means of its surface tension, so as to realize natural infiltration type cleaning. However, in this case, the limitation of the structure of the housing 40 itself is large, and it is verified by experiments that this method is only suitable for the housing 40 having a width of 50mm or less in the horizontal direction X, and the outer surface of the housing 40 is surface-treated so that the surface tension of the housing 40 is sufficiently large, and in general, the housing 40 of a material having a low surface tension property cannot clean the bottom of the housing 40 by this method.

By inserting one end of the housing 40, which is away from the opening 41 in the vertical direction Y, into the cleaning liquid 50 in the first liquid storage tank 61, the bottom of the housing 40 in the vertical direction Y can be cleaned while the outer side surface of the housing 40 is cleaned, and the surface cleaning method is further beneficial to improving the cleaning efficiency of the outer surface of the housing 40.

According to some embodiments of the present application, the depth of the housing 40 inserted into the cleaning liquid 50 of the first liquid reservoir 61 is greater than or equal to the height of the rounded corners 44 in the vertical direction Y.

Wherein an end of the housing 40 facing away from the opening 41 in the vertical direction Y is formed with a rounded corner 44.

Illustratively, the housing 40 includes a bottom wall 42 and a side wall 43, the side wall 43 being disposed around the bottom wall 42, one end of the side wall 43 in the vertical direction Y being connected to the bottom wall 42 and forming a rounded corner 44 at the connection, the other end of the side wall 43 in the vertical direction Y forming the opening 41.

The depth of inserting the end, away from the opening 41, of the shell 40 in the vertical direction Y into the cleaning solution 50 is set to be greater than or equal to the height of the rounded corners 44 of the shell 40, so that the whole bottom of the shell 40 in the vertical direction Y is soaked in the cleaning solution 50, the cleaning solution 50 in the first liquid storage tank 61 can clean the whole bottom of the shell 40, and the surface cleaning method is further beneficial to improving the cleaning quality of the bottom of the shell 40.

According to some embodiments of the present application, the depth of the housing 40 inserted into the cleaning liquid 50 of the first liquid reservoir 61 in the vertical direction Y is less than or equal to 5% of the height of the housing 40.

The positioning mechanism 10 is connected to the conveying mechanism 70, and the conveying mechanism 70 is used for driving the positioning mechanism 10 to move. That is, the positioning mechanism 10 is connected to the conveying mechanism 70, so that the conveying mechanism 70 can drive the housing 40 to move while driving the positioning mechanism 10 to move, so as to realize the streamlined cleaning of the housing 40.

The depth of the end, away from the opening 41, of the shell 40 in the vertical direction Y, inserted into the cleaning solution 50 is set to be less than or equal to 5% of the height of the shell 40, so that the resistance of the cleaning solution 50 to the shell 40 can be reduced when the conveying mechanism 70 drives the shell 40 to move, the shaking phenomenon of the shell 40 in the moving process can be reduced, and the stability and reliability of the shell 40 in the cleaning process can be effectively improved by adopting the surface cleaning method.

It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A surface cleaning apparatus for cleaning a housing of a battery cell, the housing having an opening, the surface cleaning apparatus comprising:

the positioning mechanism is used for being connected with the shell and sealing the opening;

a liquid supply mechanism for supplying a cleaning liquid for cleaning the housing; and

the drainage piece is arranged on at least one side of the positioning mechanism and used for guiding the cleaning liquid to the outer side face of the shell so as to clean the outer side face of the shell, and the outer side face of the shell is intersected with the face where the opening is located.

2. The surface cleaning apparatus of claim 1, wherein the drainage member comprises a receiving portion, a connecting portion, and a drainage portion arranged in order in a vertical direction;

the receiving part is used for receiving the cleaning liquid provided by the liquid supply mechanism;

the connecting part is connected between the bearing part and the drainage part and is used for guiding the cleaning liquid on the bearing part to the drainage part;

the drainage part extends along the horizontal direction and is used for guiding the cleaning liquid to the outer side surface of the shell.

3. The surface cleaning apparatus of claim 2 wherein the drain is closer to the positioning mechanism than the receptacle in the horizontal direction and the drain is located on an underside of the receptacle in the vertical direction.

4. A surface cleaning apparatus as claimed in claim 3, wherein the connection portion comprises:

a plurality of first connecting bodies;

the second connector extends along the horizontal direction, two ends of the second connector are respectively connected with two adjacent first connectors, the second connector is arranged between the two adjacent first connectors in the horizontal direction and the vertical direction, and the second connector is used for receiving the cleaning liquid on the first connector positioned on the upper side of the second connector in the vertical direction and guiding the cleaning liquid to the first connector positioned on the lower side of the second connector in the vertical direction;

the two first connectors positioned at the two ends of the connecting part are respectively connected with the bearing part and the drainage part.

5. The surface cleaning apparatus of claim 4, wherein the first connecting body has opposite first and second ends in an extension direction thereof;

In the horizontal direction, the first end is closer to the receptacle than the second end;

in the vertical direction, the first end is closer to the receiving portion than the second end.

6. The surface cleaning apparatus of claim 3, wherein the connecting portion has an arc-shaped structure, and two ends of the connecting portion are respectively connected to the receiving portion and the drainage portion.

7. A surface cleaning apparatus as claimed in claim 3, wherein the connecting portion is of a flat plate structure arranged obliquely, and both ends of the connecting portion are connected to the receiving portion and the drainage portion, respectively.

8. The surface cleaning apparatus of claim 1, wherein the surface cleaning apparatus comprises:

the two drainage pieces are arranged on two sides of the positioning mechanism in the horizontal direction.

9. The surface cleaning apparatus of any one of claims 1-8, further comprising:

the liquid storage tank is used for recycling the cleaning liquid after the shell is cleaned;

the liquid supply mechanism is used for conveying the cleaning liquid in the liquid storage tank to the drainage piece.

10. The surface cleaning apparatus of claim 9, wherein the reservoir is disposed on a lower side of the positioning mechanism in a vertical direction, the reservoir having a first reservoir into which an end of the housing facing away from the opening in the vertical direction is inserted, the first reservoir being for recovering the cleaning liquid after cleaning the housing.

11. The surface cleaning apparatus of claim 10, wherein the reservoir further has a second reservoir positioned on one side of the first reservoir;

an overflow hole is formed in the side wall of the first liquid storage tank, the overflow hole is communicated with the first liquid storage tank and the second liquid storage tank, and the overflow hole is used for guiding the cleaning liquid in the first liquid storage tank into the second liquid storage tank;

the liquid supply mechanism is used for conveying the cleaning liquid in the second liquid storage tank to the drainage piece.

12. The surface cleaning apparatus of any one of claims 1-8, further comprising:

and the conveying mechanism is connected with the positioning mechanism and used for driving the positioning mechanism to move.

13. A cleaning line comprising a plurality of surface cleaning apparatus according to any one of claims 1 to 12.

14. A surface cleaning method for cleaning a housing of a battery cell, the housing having an opening, the surface cleaning method comprising:

15. The surface cleaning method of claim 14, further comprising:

16. The surface cleaning method according to claim 15, wherein a depth of the housing inserted into the cleaning liquid in the first reservoir in the vertical direction is greater than or equal to a height of a rounded corner;

Wherein, the one end of the shell facing away from the opening in the vertical direction is formed with the fillet.

17. The surface cleaning method according to claim 15, wherein a depth of the housing inserted into the cleaning liquid in the first reservoir in the vertical direction is less than or equal to 5% of a height of the housing;

the positioning mechanism is connected to the conveying mechanism, and the conveying mechanism is used for driving the positioning mechanism to move.