Welding slag cleaning equipment and battery production system

Abstract

The utility model is applicable to the technical field of power batteries, and provides welding slag cleaning equipment and a battery production system.The welding slag cleaning equipment comprises a mounting position, a welding slag cleaning device and a welding slag cleaning device, the at least one polishing assembly is arranged on one side of the mounting position, and the polishing assembly is used for polishing the side surface of the battery monomer; according to the welding slag cleaning equipment provided by the invention, the welding slag on the single battery is polished through the polishing assembly, so that the polishing assembly is in direct contact with the single battery and achieves polishing, and the welding slag on the single battery can be directly and efficiently cleaned through the polishing mode, so that the situation that the welding slag enters the interior of the battery is reduced; and meanwhile, by means of the grinding mode, welding slag can be efficiently cleaned, other uneven positions on the single battery can be flattened, and therefore the negative effects caused by follow-up welding slag and unevenness of the single battery on film coating are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to a welding slag cleaning device and a battery production system. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] In the existing battery manufacturing process, welding process is usually required. However, welding will form slag after completion. The slag will cause the battery film to be uneven, thus having a negative impact on the appearance of the battery. In addition, the slag may also enter the battery and cause safety problems such as short circuits, resulting in safety hazards to the battery. Utility Model Content

[0004] In view of the above problems, the present application provides a welding slag cleaning device and a battery production system to alleviate the negative impact of welding slag on the appearance and safety performance of the battery.

[0005] In a first aspect, an embodiment of the present application provides a welding slag cleaning device, comprising:

[0006] A mounting position for accommodating a battery cell;

[0007] At least one grinding assembly is arranged on one side of the installation position, and the grinding assembly is used for grinding the side surface of the battery cell.

[0008] In the technical solution of this embodiment, the welding slag on the battery cell is polished by a polishing assembly, so that the polishing assembly directly contacts the battery cell and realizes polishing. The polishing method can directly clean the welding slag on the battery cell more efficiently to reduce the occurrence of welding slag entering the interior of the battery; at the same time, the polishing method can not only clean the welding slag more efficiently, but also level other uneven positions on the battery cell to reduce the negative impact of subsequent welding slag and uneven battery cells on the envelope.

[0009] In some embodiments, the welding slag cleaning device further includes: a first working position, a second working position and a third working position which are sequentially arranged at intervals, the second working position being arranged at one side of the installation position so that the grinding assembly can grind the battery cell in the second working position;

[0010] The grinding assembly can move from the first working position to the third working position via the second working position.

[0011] In the technical solution of this embodiment, a second working position is set and the second working position is opposite to the installation position, so that the polishing component can polish the battery cell at the installation position when passing through the second working position; at the same time, a first working position and a third working position are set and the first working position and the third working position are spaced apart from the second working position, so as to provide the polishing component with adjustment time for parameters such as polishing frequency and movement speed.

[0012] In some embodiments, the first working station, the second working station and the third working station are arranged in sequence along the first direction;

[0013] During the movement of the grinding assembly from the first working position to the third working position, the distance between the grinding assembly and the mounting position in the direction perpendicular to the first direction remains equal.

[0014] In the technical solution of this embodiment, the grinding component is kept at the same distance from the installation position during the movement from the first working position to the third working position, so that the grinding component can always maintain an equal or approximately equal distance from the battery cell during the process, and the grinding component can grind different locations of the corresponding sides of the battery cell more evenly, thereby reducing the occurrence of uneven treatment at various locations, enhancing the welding slag cleaning effect, and reducing the occurrence of welding slag residue due to the displacement of the grinding component position.

[0015] In some embodiments, the grinding assembly can move at the same speed in the second working station.

[0016] The technical solution of this embodiment enables the grinding assembly to move at a uniform speed while passing through the second working position, so as to further enable the grinding assembly to grind different locations of the corresponding sides of the battery cell more evenly, while also reducing the occurrence of welding slag residue that may be caused by insufficient grinding time.

[0017] In some embodiments, the second working position and the third working position are respectively arranged on two adjacent sides of the mounting position, so that the polishing assembly can perform polishing processing on the battery cell in both the second working position and the third working position.

[0018] The technical solution of this embodiment arranges the second working position and the third working position on the adjacent two sides of the installation position respectively; because the grinding component moves from the first working position to the third working position via the second working position, the second working position and the third working position are respectively located on the adjacent two sides of the installation position, so that the grinding component can grind the two sides of the battery cell during the movement, thereby saving the process of adjusting the position of the battery cell multiple times and grinding again, and improving the efficiency of welding slag cleaning.

[0019] In some embodiments, the movement trajectory of the grinding assembly in the second working position is parallel to the side surface of the opposite battery cell, and the movement trajectory of the grinding assembly in the third working position is parallel to the side surface of the opposite battery cell.

[0020] In the technical solution of this embodiment, the movement trajectory of the grinding assembly in the second working position is parallel to the side of the relative battery cell, and the movement trajectory of the grinding assembly in the third working position is parallel to the side of the relative battery cell; this setting can keep the distance between the grinding assembly and the side of the relative battery cell equal or approximately equal at all times, so that the grinding assembly can more evenly grind different locations of the corresponding side of the battery cell, thereby reducing the occurrence of uneven treatment at various positions.

[0021] In some embodiments, the distance between the movement trajectory of the polishing assembly in the second working position and the side surface of the opposite battery cell is equal to the distance between the movement trajectory of the polishing assembly in the third working position and the side surface of the opposite battery cell.

[0022] In the technical solution of the present embodiment, the distance between the grinding assembly and the side surface of the battery cell relative to the second working position is equal to the distance between the grinding assembly and the side surface of the battery cell relative to the third working position, so that the grinding assembly can grind the adjacent sides of the battery cell more evenly, so that the grinding effect of the grinding assembly on the adjacent sides of the battery cell can be the same or approximately the same, and the appearance of the adjacent sides of the battery cell after grinding can be the same or approximately the same, so as to reduce the negative impact such as appearance changes that may be caused by the grinding of different sides of the battery cell by the grinding assembly.

[0023] In some embodiments, the grinding assembly can move at the same speed in the second working station and / or the third working station.

[0024] In the technical solution of this embodiment, the grinding component can move at a uniform speed while passing through the second working position or the third working position, so as to further enable the grinding component to grind different locations of the corresponding sides of the battery cell more evenly, while also reducing the occurrence of welding slag residue that may be caused by insufficient grinding time; the grinding component can also move at the same speed in the second working position and the third working position, so that the grinding effect of the grinding component on adjacent sides of the battery cell can be the same or approximately the same, and the appearance of adjacent sides of the battery cell after grinding can be the same or approximately the same, so as to reduce the negative effects such as appearance changes that may be caused by the grinding of different sides of the battery cell by the grinding component.

[0025] In some embodiments, the welding slag cleaning device also includes an avoidance position located on the side of the third working position away from the installation position, and the grinding component can move from the third working position to the avoidance position.

[0026] The technical solution of this embodiment sets an avoidance position so that the grinding assembly can move from the third working position to the avoidance position to reduce the situation where the grinding assembly accidentally grinds the battery cell after the grinding process is completed, and can also reduce the situation where the grinding assembly accidentally grinds other structures in the welding slag cleaning equipment.

[0027] In some embodiments, the welding slag cleaning equipment also includes a waiting position located on the side of the first working position away from the installation position, and the grinding component can move from the avoidance position to the waiting position, and the grinding component can move from the waiting position to the first working position.

[0028] The technical solution of this embodiment sets a waiting position so that the polishing assembly can move to the waiting position by itself and can also move from the waiting position to the first working position, thereby facilitating the polishing assembly to polish the next battery cell.

[0029] In some embodiments, the welding slag cleaning device further includes a moving component, and the moving component is used to drive the grinding component to move relative to the mounting position.

[0030] In the technical solution of this embodiment, the welding slag cleaning device also includes a moving component, and the moving component drives the grinding component to move, so that the grinding component can clean and grind the welding slag at different positions on the battery cell.

[0031] In some embodiments, the welding slag cleaning device further includes a material moving component for moving battery cells.

[0032] The technical solution of this embodiment is to set up a material moving assembly, so that the battery cell can be placed on the installation position through the material moving assembly, and the battery cell can also be taken out from the installation position through the material moving assembly, thereby achieving the effect of loading and unloading.

[0033] In some embodiments, on the side of the material moving assembly facing the polishing assembly, the material moving assembly covers a portion of the battery cell and forms a covering area, and the material moving assembly can also form a non-covering area outside the covering area on the battery cell;

[0034] The grinding component can grind the non-covered area.

[0035] In the technical solution of this embodiment, the material moving assembly is able to cover a partial area of ​​the battery cell and form a covering area. At this time, the material moving assembly can protect the corresponding surface of the battery cell in the covering area to reduce the negative impact that metal chips or other impurities formed by the grinding assembly during grinding may have on the corresponding surface of the battery cell; at the same time, the material moving assembly can also form a non-covered area on the corresponding surface of the battery cell that is not covered by the material moving assembly, so that the grinding assembly can emit and grind the welding slag in the non-covered area.

[0036] In some embodiments, in the height direction of the battery cell, the size of the non-covered area ranges from 1 mm to 5 mm.

[0037] The technical solution of this embodiment provides some specific sizes of non-covered areas, so that the size of the non-covered area in the height direction of the battery cell is between 1mm and 5mm. Since the welding slag generated during the formation of the weld is usually formed in the area of ​​1mm to 5mm near the weld, setting this range can enable the grinding assembly to clean most of the welding slag on the corresponding surface of the battery cell, and can also reduce the negative impact that the grinding assembly may have on other areas of the battery cell.

[0038] In some embodiments, the material moving assembly includes two clamping plates arranged opposite to each other to clamp the battery cells.

[0039] The technical solution of this embodiment provides some specific structures of the material moving assembly, so that the material moving assembly includes two relatively arranged clamping plates, so as to clamp the battery cell through the two clamping plates and drive the battery cell to move; at the same time, the clamping plates can also cover part of the battery cell to form a covering area and a non-covering area.

[0040] In some embodiments, the welding slag cleaning device includes two grinding assemblies, and the two grinding assemblies are respectively arranged on opposite sides of the installation position.

[0041] In the technical solution of this embodiment, the welding slag cleaning equipment includes two grinding components, so that the two grinding components can grind two opposite side surfaces of the battery cell at the same time, thereby improving the cleaning efficiency of the welding slag.

[0042] In some embodiments, the two grinding assemblies can move relative to the mounting position in the same direction;

[0043] Or the two grinding components can move relative to the mounting position in opposite directions.

[0044] In the technical solution of this embodiment, the two grinding components can move in the same direction to synchronously clean the welding slag on the opposite side surfaces of the battery cell, thereby improving the welding slag cleaning efficiency; the two grinding components can also move in opposite directions so that the two grinding components can synchronously clean the welding slag, thereby improving the welding slag cleaning efficiency; at the same time, it can also reduce the damage of the grinding components caused by the collision and friction between the two grinding components, thereby reducing the failure rate of the welding slag cleaning equipment and increasing its service life.

[0045] In some embodiments, the grinding assembly includes a first base, a grinding wheel disposed on the first base, and a first driving structure. The grinding wheel is rotatably disposed on the first base, and the first driving structure is used to drive the grinding wheel to rotate.

[0046] The technical solution of this embodiment provides some specific structures of the grinding components, and the grinding wheel and the first driving structure are both arranged on the first base, so that the first driving structure and the grinding wheel are supported by the first base, so as to facilitate controlling the grinding position of the grinding wheel by controlling the position of the first base; the grinding wheel is driven to rotate by the first driving structure, so that the grinding wheel can grind the sides of the opposite battery cell.

[0047] In some embodiments, the grinding wheel includes a base portion rotatably connected to the first base and a grinding portion disposed around the base portion;

[0048] The grinding part includes a stainless steel structure, a ceramic structure or a wire brush structure.

[0049] This embodiment provides some specific structures of the grinding wheel, so that the base can be connected to the first base, and the first driving structure can be connected to the base to drive the grinding wheel to rotate; it also enables the grinding wheel to grind the battery cell through the grinding part; the grinding part can be a wire brush structure, because the wire brush structure has a certain deformation ability on the basis of being able to grind welding slag, and on the basis of being able to clean welding slag, this setting can reduce the wear of the grinding part on the side of the battery cell; the grinding part can also be a ceramic structure or a stainless steel structure, because the ceramic structure and the stainless steel structure are smoother, and on the basis of being able to clean welding slag, this setting can reduce the wear of the grinding part on the side of the battery cell, and at the same time enable the grinding wheel to have higher grinding accuracy.

[0050] In some embodiments, the grinding wheel has a thickness ranging from 1 mm to 5 mm.

[0051] The technical solution of this embodiment provides some specific structures of grinding wheels. Since the welding slag generated during the formation of the weld is usually formed in the area of ​​1mm to 5mm near the weld, the size of the grinding wheel corresponds to the area where the welding slag is formed, so that the grinding wheel can cover the area where the welding slag is formed, so that the grinding assembly can clean the welding slag on the side relative to the battery cell with a single movement without the need for reciprocating movement and adjusting the height or angle, thereby improving the efficiency of welding slag cleaning.

[0052] In some embodiments, the polishing assembly further includes a second base and a second driving structure disposed on the second base. The first base is further disposed on the second base, and the second driving structure is used to drive the first base to move closer to or away from the installation position.

[0053] The technical solution of this embodiment further provides some specific structures of the grinding components, in which the first base is supported by the second base, so that the grinding position of the grinding wheel can be controlled by controlling the position of the second base; the position of the first base relative to the second base is adjusted by the second driving structure, and the second driving structure can drive the first base close to or away from the battery cell to adjust the pressure between the grinding wheel and the side of the relative battery cell, thereby realizing the adjustment of the friction force and the grinding effect. At the same time, the setting of the second driving structure can also enable the welding slag cleaning equipment to adapt to battery cells of various sizes, thereby increasing the compatibility of the welding slag cleaning equipment.

[0054] In some embodiments, the polishing assembly further includes a third base and a third driving structure disposed on the third base. A second base is further disposed on the third base, and the third driving structure is used to drive the second base to move relative to the third base.

[0055] The technical solution of this embodiment further provides some specific structures of the grinding assembly, in which the second base is supported by the third base to control the grinding position of the grinding wheel; the movement of the second base is driven by the third driving structure to adjust the position of the grinding wheel, so that the grinding wheel can move relative to the battery cell and cover the area that needs to be polished on the side relative to the battery cell.

[0056] In some embodiments, the sanding assembly further includes a dust suction structure.

[0057] The technical solution of this embodiment enables the grinding assembly to also include a dust suction structure to capture welding slag, metal chips or other impurities dropped by grinding, so as to reduce the negative impact of impurities formed after grinding on battery cells, welding slag cleaning equipment or working environment.

[0058] In a second aspect, some embodiments of the present application further provide a battery production system, including the welding slag cleaning equipment provided by some embodiments of the first aspect.

[0059] In some embodiments, the battery production system includes one or two weld slag cleaning devices.

[0060] The technical solution of this embodiment enables the battery production system to include not only one welding slag cleaning device, in which case the welding slag can be cleaned on the side of the battery cell by rotating the battery cell with a clamp, or by the reverse movement of two grinding components; it also enables the battery production system to include two welding slag cleaning devices, in which case the two opposite sides of the battery cell can be cleaned separately by the two welding slag cleaning devices.

[0061] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0063] Figure 1 An exploded schematic diagram of a battery cell provided in some embodiments of the present application.

[0064] Figure 2 A schematic diagram of the locations of various workstations in the welding slag cleaning equipment provided in some embodiments of the present application.

[0065] Figure 3 A schematic diagram of the locations of various workstations in welding slag cleaning equipment provided in other embodiments of the present application.

[0066] Figure 4 A schematic diagram of the positions of various workstations in welding slag cleaning equipment provided in some embodiments of the present application.

[0067] Figure 5 A schematic diagram of the positions of various workstations in welding slag cleaning equipment provided in some further embodiments of the present application.

[0068] Figure 6 A front view schematic diagram of a material moving assembly in a welding slag cleaning device provided in some embodiments of the present application.

[0069] Figure 7 A three-dimensional schematic diagram of a grinding component in a welding slag cleaning device provided in some embodiments of the present application.

[0070] Figure 8 A schematic side view of a grinding assembly in a welding slag cleaning device provided for some embodiments of the present application.

[0071] Fig. 9 A schematic top view of a grinding assembly in a welding slag cleaning device provided in some embodiments of the present application.

[0072] Fig.10 A three-dimensional schematic diagram of a partial structure of a grinding component in a welding slag cleaning device provided in some embodiments of the present application.

[0073] Fig.11A front schematic diagram of a grinding wheel in a grinding assembly in a welding slag cleaning device provided in some embodiments of the present application.

[0074] The meanings of the marks in the figure are:

[0075] 100. Battery cell;

[0076] 11. end cap; 12. electrode assembly; 13. housing; 131. covering area; 132. non-covering area;

[0077] 200. Welding slag cleaning equipment;

[0078] 21. Installation position; 22. First working position; 23. Second working position; 24. Third working position; 25. Avoidance position; 26. Waiting position;

[0079] 30. grinding assembly; 31. first base; 32. grinding wheel; 321. base; 322. grinding part; 33. first driving structure; 34. second base; 35. second driving structure; 36. third base; 37. third driving structure; 38. dust collecting structure; 39. transmission structure;

[0080] 40. Material transfer assembly; 41. Clamp. DETAILED DESCRIPTION

[0081] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0082] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0083] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0084] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0085] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0086] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0087] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0088] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0089] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0090] In the existing battery manufacturing process, welding processes are usually required. For example, the end caps of the battery cells need to be welded to the shell to form an internal environment isolated from the external environment. However, during the welding process, it is easy for the solution in the molten pool to splash near the welding part. The splashed solution can cool and solidify on the shell to form welding slag. The welding slag may fall off and enter the battery cell during the subsequent processing or use of the battery, which may easily cause safety problems such as short circuits in the battery cells and have a negative impact on the safety performance of the battery. At the same time, some welding slags are large in volume and protrude from the shell to a high height. These welding slags will also have a negative impact on the battery cell envelope and affect the appearance of the battery cell.

[0091] Based on the above considerations, in order to alleviate the negative impact of welding slag on the appearance and safety performance of battery cells, some embodiments of the present application use grinding to clean the welding slag. Specifically, the areas of the battery cells with more welding slag are ground by a grinding component.

[0092] During the grinding process, the grinding assembly can directly grind the welding slag on the battery cell to make it smooth, so as to reduce the negative impact of the welding slag on the subsequent battery packaging, and also reduce the occurrence of welding slag entering the battery. At the same time, the grinding assembly is usually easy to control, and the friction between the grinding assembly and the battery cell can be adjusted as needed to reduce the damage of the grinding assembly to the shell. At the same time, the grinding assembly can also leave cleaning marks on the shell, so that the staff or identification equipment in the subsequent process can more quickly confirm whether the battery has undergone the welding slag cleaning process.

[0093] Based on the above considerations, in order to alleviate the negative impact of welding slag on the appearance and safety performance of battery cells, some embodiments of the present application use grinding to clean the welding slag. Specifically, the areas of the battery cells with more welding slag are ground by a grinding component.

[0094] During the grinding process, the grinding component directly contacts the battery cell and performs grinding. The grinding method can directly and efficiently clean the welding slag on the battery cell, so as to reduce the occurrence of welding slag entering the battery, and also reduce the negative impact of welding slag on the subsequent battery package. At the same time, the grinding method can not only clean the welding slag more efficiently, but also level other uneven positions on the battery cell, so as to further reduce the negative impact of subsequent welding slag and uneven battery cells on the package.

[0095] The welding slag cleaning equipment disclosed in the embodiment of the present application can be used to clean the welding slag on the battery cell shell, and can also be used to clean the welding slag of other workpieces; the battery cell can be used in an electrical device that uses a battery as a power source or various energy storage systems that use a battery as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0096] For the convenience of explanation, the following embodiments are described by taking the welding slag cleaning device 200 of some embodiments of the present application as an example for cleaning welding slag on the shell 13 of the battery cell 100.

[0097] refer to Figure 1 FIG1 is a schematic diagram of the exploded structure of a battery cell 100 provided in some embodiments of the present application. The battery cell 100 refers to the smallest unit constituting a battery. As shown in the figure, the battery cell 100 includes an end cap 11, a housing 13, an electrode assembly 12 and other functional components.

[0098] The end cap 11 refers to a component that covers the opening of the shell 13 to isolate the internal environment of the battery cell 100 from the external environment. Without limitation, the shape of the end cap 11 can be adapted to the shape of the shell 13 to match the shell 13. Optionally, the end cap 11 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 11 is not easily deformed when squeezed and collided, so that the battery cell 100 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals can be provided on the end cap 11. The electrode terminal can be used to electrically connect to the electrode assembly 12 for outputting or inputting electrical energy of the battery cell 100. In some embodiments, the end cap 11 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 100 reaches a threshold. The material of the end cap 11 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 11, and the insulating member may be used to isolate the electrical connection components in the housing 13 from the end cap 11 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0099] The shell 13 is a component used to cooperate with the end cap 11 to form the internal environment of the battery cell 100, wherein the formed internal environment can be used to accommodate the electrode assembly 12, the electrolyte and other components. The shell 13 and the end cap 11 can be independent components, and an opening can be set on the shell 13, and the internal environment of the battery cell 100 is formed by covering the opening with the end cap 11 at the opening. Without limitation, the end cap 11 and the shell 13 can also be integrated. Specifically, the end cap 11 and the shell 13 can form a common connection surface before other components are put into the shell, and when the interior of the shell 13 needs to be encapsulated, the end cap 11 is covered with the shell 13. The shell 13 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 13 can be determined according to the specific shape and size of the electrode assembly 12. The material of the shell 13 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0100] The end cover 11 and the shell 13 are usually connected by welding and a weld is formed at the connection. The weld is usually formed on each side where the shell 13 is connected to the end cover 11. Due to the influence of the welding process, welding slag is easily formed in the area near the weld. The area where welding slag is easily formed can be called a non-covered area 132, and other areas of the side of the shell 13 different from the non-covered area 132 are called covered areas 131.

[0101] The electrode assembly 12 is a component in the battery cell 100 where electrochemical reactions occur. One or more electrode assemblies 12 may be included in the housing 13. The electrode assembly 12 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 12, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive tab and the negative tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0102] In a first aspect, some embodiments of the present application provide a welding slag cleaning device 200, referring to Figure 1 , Figures 2 to 5 , Figure 7 ,in, Figure 1 Schematic diagram of an explosion of a battery cell 100 provided in some embodiments of the present application, Figures 2 to 5 A schematic diagram of the positions of various workstations in a welding slag cleaning device 200 provided for some different embodiments of the present application, Figure 7 A three-dimensional schematic diagram of a grinding assembly 30 in a welding slag cleaning device 200 provided in some embodiments of the present application.

[0103] Figure 1 In the diagram, the direction of the X-axis is the length direction of the battery cell 100 , the direction of the Y-axis is the width direction of the battery cell 100 , and the direction of the Z-axis is the height direction of the battery cell 100 .

[0104] In some embodiments of the present application, the welding slag cleaning device 200 includes a mounting position 21 and at least one grinding component 30, the mounting position 21 is used to accommodate the battery cell 100; the grinding component 30 is arranged on one side of the mounting position 21, and the grinding component 30 is used to grind the side of the battery cell 100.

[0105] The installation position 21 refers to the position in the welding cleaning equipment for accommodating the battery cell 100. The staff or the feeding device can place the battery cell 100 that needs to be cleaned of welding slag in the installation position 21, and can also take the battery cell 100 after the welding slag is cleaned out from the installation position 21; the installation position 21 can be a spatial structure set in a space, or it can be a spatial structure surrounded by structural parts; the shape of the installation position 21 can be square, circular or other shapes.

[0106] The grinding component 30 refers to the structure in the welding slag cleaning equipment 200 used to grind the battery cell 100. The grinding component 30 may include a grinding wheel, a wire brush or other friction structures that can rub against the battery cell 100. The grinding component 30 may also include a structure or other structure for providing a lubricating fluid; according to the friction method of the grinding component 30, when the grinding component 30 grinds the battery cell 100 by rotation, the grinding component 30 may include a rotating wheel-shaped friction structure, such as a grinding wheel, a ceramic wheel, etc., when the grinding component 30 grinds the battery cell 100 by vibration or reciprocating motion, the grinding component 30 may include a friction block, a wire brush, etc.

[0107] The number of grinding components 30 can be one or two or more; the grinding component 30 is arranged on one side of the mounting position 21 to facilitate relative friction between the grinding component 30 and the battery cell 100 in the mounting position 21; when there is only one grinding component 30, the grinding component 30 can have different movement trajectories so that the grinding component 30 can grind the sides of one or more battery cells 100 to improve the efficiency of cleaning welding slag; when there are two or more grinding components 30, multiple grinding components 30 can be arranged around the mounting position 21, so that the grinding component 30 can grind different sides of the battery cell 100 to improve the efficiency of cleaning welding slag.

[0108] The grinding process means that the grinding component 30 can rub against the side of the battery cell 100, and gradually reduce the height of the welding slag or other protrusions on the shell 13 through friction, so as to clean the welding slag; the grinding component 30 can move along a preset path on the side of the battery cell 100 to more comprehensively clean the area that needs to be cleaned and reduce the missed area; according to the area that the grinding component 30 can cover, the preset path can be a straight line, U-shaped, S-shaped or other shaped path.

[0109] The grinding assembly 30 can move frictionally relative to the battery cell 100 to gradually reduce the height of the welding slag or other structures protruding from the shell 13, so as to clean the welding slag; the grinding assembly 30 can control the grinding effect by adjusting the friction frequency, controlling the pressure of the grinding assembly 30 on the shell 13, etc.

[0110] In this embodiment, the welding slag on the battery cell 100 is ground by the grinding component 30, so that the grinding component 30 directly contacts the battery cell 100 and performs grinding. The grinding method can directly clean the welding slag on the battery cell 100 more efficiently to reduce the occurrence of welding slag entering the interior of the battery; at the same time, the grinding method can not only clean the welding slag more efficiently, but also level other uneven positions on the battery cell 100 to reduce the negative impact of subsequent welding slag and uneven battery cell 100 on the envelope.

[0111] According to some embodiments of the present application, reference Figures 2 to 5 ,in, Figure 2 A schematic diagram of the positions of various workstations in the welding slag cleaning equipment 200 provided in some embodiments of the present application, Figure 3 A schematic diagram of the positions of various workstations in a welding slag cleaning device 200 provided in other embodiments of the present application, Figure 4 A schematic diagram of the positions of various workstations in a welding slag cleaning device 200 provided in some embodiments of the present application, Figure 5 A schematic diagram of the positions of various workstations in the welding slag cleaning equipment 200 provided in some further embodiments of the present application.

[0112] In some embodiments of the present application, the welding slag cleaning equipment 200 also includes: a first work station 22, a second work station 23 and a third work station 24 arranged in sequence, and the second work station 23 is arranged on one side of the installation position 21, so that the grinding assembly 30 can grind the battery cell 100 in the second work station 23; the grinding assembly 30 can move from the first work station 22 to the third work station 24 via the second work station 23.

[0113] The first working position 22 refers to a spatial structure in the welding cleaning equipment for accommodating the grinding assembly 30. The grinding assembly 30 can enter the first working position 22 and can also move from the first working position 22 to other positions; the first working position 22 can be a spatial structure set in a space, or it can be a spatial structure surrounded by structural parts; the shape of the first working position 22 can be square, circular or other shapes.

[0114] Similar to the first workstation 22, the second workstation 23 also refers to a spatial structure in the welding cleaning equipment for accommodating the grinding assembly 30. The grinding assembly 30 can enter the second workstation 23 and can also move from the second workstation 23 to other positions; the second workstation 23 can be a spatial structure set in a space, or it can be a spatial structure surrounded by structural parts; the shape of the second workstation 23 can be square, circular or other shapes.

[0115] The second working position 23 is opposite to the installation position 21. When the polishing component 30 passes through the second working position 23, the polishing component 30 can polish the battery cell 100 in the installation position 21. According to the specific structure of the polishing component 30, the second working position 23 can be set to be adjacent to the installation position 21, and the second working position 23 can also be set to be spaced apart from the installation position 21.

[0116] Similar to the first workstation 22, the third workstation 24 also refers to a spatial structure in the welding cleaning equipment for accommodating the grinding assembly 30. The grinding assembly 30 can enter the third workstation 24 and can also move from the third workstation 24 to other positions; the third workstation 24 can be a spatial structure set in a space, or it can be a spatial structure surrounded by structural parts; the shape of the third workstation 24 can be square, circular or other shapes.

[0117] The first working position 22, the second working position 23 and the third working position 24 are arranged in sequence, that is, the first working position 22, the second working position 23 and the third working position 24 can be in a straight line or staggered; in some embodiments, the first working position 22, the second working position 23 and the third working position 24 are in a straight line, and the straight line is parallel to the length direction (X) of the battery cell 100.

[0118] Since the grinding component 30 can move from the first working position 22 to the second working position 23 to the third working position 24, and the second working position 23 is opposite to the installation position 21, the process of the grinding component 30 moving from the first working position 22 to the second working position 23 is the action before the grinding component 30 starts the grinding process, which can be called the preparation process, and the process of the grinding component 30 moving from the second working position 23 to the third working position 24 is the action of the grinding component 30 after the grinding process, which can be called the exit process.

[0119] Because the grinding component 30 can grind the battery cell 100 in the installation position 21 at the second working position 23, and before the relevant parameters of the grinding component 30 reach the required standards, there is a process of adjusting the grinding frequency, the pressure on the shell 13, the movement speed and other parameters. Therefore, the first working position 22 and the third working position 24 are set, so that the grinding component 30 can adjust the relevant parameters to reach the required standards during the preparation process, and also allow the grinding component 30 to adjust the relevant parameters during the exit process to reduce the negative impact of grinding on other structures and other structures, and can also reduce the problems such as the shortened life of the grinding component 30 due to long-term operation.

[0120] In this embodiment, a second working position 23 is set and the second working position 23 is opposite to the installation position 21, so that the grinding component 30 can grind the battery cell 100 at the installation position 21 when passing through the second working position 23; at the same time, a first working position 22 and a third working position 24 are set and the first working position 22 and the third working position 24 are spaced apart from the second working position 23, so as to provide the grinding component 30 with adjustment time for parameters such as grinding frequency and movement speed.

[0121] refer to Figure 2 In some embodiments, the first working position 22, the second working position 23 and the third working position 24 are arranged in sequence along the first direction; when the grinding component 30 moves from the first working position 22 to the third working position 24, the distance between the grinding component 30 and the mounting position 21 in the direction perpendicular to the first direction remains equal.

[0122] The first workstation 22, the second workstation 23 and the third workstation 24 are arranged along the first direction, which means that the first workstation 22, the second workstation 23 and the third workstation 24 are in a straight line, and the movement path of the grinding assembly 30 from the first workstation 22 to the third workstation 24 is a straight line; in some embodiments, the first direction is parallel to the length direction (X) of the battery cell 100.

[0123] The distance between the polishing assembly 30 and the mounting position 21 in the direction perpendicular to the first direction is the distance shown by H1 in the figure, which is always kept equal, that is, the movement path of the polishing assembly 30 is parallel to the side of the battery cell 100 toward the polishing assembly 30.

[0124] Because the cleaning ability of the grinding component 30 for welding slag is also affected by the distance between the grinding component 30 and the side of the relative battery cell 100, specifically, in the process of the grinding component 30 moving in the second working position 23 and grinding the corresponding battery cell 100 side, if the distance between the grinding component 30 and the side of the relative battery cell 100 changes, the pressure applied by the grinding component 30 on the side of the relative battery cell 100 will also change accordingly, thereby causing the grinding effect of the grinding component 30 on the side of the relative battery cell 100 to change accordingly, which may easily lead to poor welding slag cleaning effect at certain positions of the battery cell 100, and excessive wear of the shell 13 at certain positions of the battery cell 100, causing the side of the battery cell 100 to become uneven.

[0125] The grinding component 30 is kept at the same distance from the mounting position 21 during the movement, so as to reduce the negative impact of the distance change between the grinding component 30 and the side of the battery cell 100 on the removal of welding slag. In this way, during the grinding process, the friction of various parts of the battery cell 100 that need to be covered in the non-covered area 132 can be the same or approximately the same, thereby reducing the situation where some welding slag cannot be effectively cleaned due to the long distance between the grinding component 30 and the side of the battery cell 100, and reducing the situation where some parts of the battery cell 100 are excessively worn due to the close distance between the grinding component 30 and the side of the battery cell 100.

[0126] In this embodiment, the grinding component 30 is kept at the same distance from the installation position 21 during the movement from the first working position 22 to the third working position 24, so that the grinding component 30 can always maintain an equal or approximately equal distance from the battery cell 100 during the process, and the grinding component 30 can grind different locations of the corresponding sides of the battery cell 100 more evenly, thereby reducing the occurrence of uneven treatment at various locations, enhancing the welding slag cleaning effect, reducing the occurrence of welding slag residue due to position offset of the grinding component 30, and reducing excessive wear of the shell 13.

[0127] refer to Figure 4 In some embodiments, the grinding assembly 30 can move at the same speed in the second working station 23 .

[0128] The grinding component 30 moves at the same speed in the second working position 23, which means that the grinding component 30 can pass through the second working position 23 at a uniform speed; the specific speed of the grinding component 30 in the second working position 23 can be determined according to parameters such as the friction frequency of the grinding component 30 and the distance between the grinding component 30 and the side of the relative battery cell 100, so that the grinding component 30 can effectively rub the welding slag to the desired size during the movement on the shell 13.

[0129] It can be understood that the moving speed of the grinding assembly 30 should not be too slow to reduce the negative impact on the grinding efficiency; the moving speed of the grinding assembly 30 should not be too fast so that the grinding assembly 30 can fully grind each area of ​​the shell 13 to reduce the occurrence of excessive size of the welding slag after grinding, so that the grinding assembly 30 has a better welding slag cleaning effect.

[0130] Due to the influence of the grinding time of the welding slag, the grinding component 30 moves at a uniform speed in the second working position 23, so that the grinding component 30 can move at a uniform speed on the shell 13, so that the grinding component 30 can grind the different parts of the corresponding surface of the battery cell 100 more evenly, thereby reducing the uneven treatment of various positions, enhancing the welding slag cleaning effect, and reducing the welding slag residue caused by the position offset of the grinding component 30.

[0131] This embodiment enables the grinding assembly 30 to move at a constant speed while passing through the second working position 23, so as to further enable the grinding assembly 30 to grind different locations of the corresponding side surfaces of the battery cell 100 more evenly, while also reducing the occurrence of welding slag residue that may be caused by insufficient grinding time.

[0132] refer to Figure 5 In some embodiments, the second working position 23 and the third working position 24 are respectively arranged on two adjacent sides of the mounting position 21, so that the grinding assembly 30 can grind the battery cell 100 in both the second working position 23 and the third working position 24.

[0133] The second working position 23 and the third working position 24 are respectively arranged on the adjacent two sides of the installation position 21, that is, the second working position 23 and the third working position 24 can be located on the adjacent two sides of the battery cell 100; the grinding component 30 can grind the battery cell 100 in both the second working position 23 and the third working position 24, that is, when the grinding component 30 moves to the second working position 23 or the third working position 24, the grinding component 30 can be opposite to different sides of the battery cell 100 and can grind the opposite sides of the battery cell 100.

[0134] Because the grinding assembly 30 can move from the first working position 22 to the second working position 23 to the third working position 24, and the second working position 23 and the third working position 24 are respectively located on the adjacent two sides of the installation position 21, in the process of the grinding assembly 30 moving from the first working position 22 to the third working position 24, the grinding assembly 30 can respectively grind two different sides of the battery cell 100, thereby improving the grinding efficiency of the grinding assembly 30 in one movement.

[0135] If the grinding assembly 30 only grinds one side of the battery cell 100 during the movement from the first working position 22 to the third working position 24, the position of the battery cell 100 needs to be adjusted by staff or other equipment so that the grinding assembly 30 can grind other positions of the battery cell 100, and multiple adjustments are required to achieve the grinding of one battery cell 100. In contrast, the second working position 23 and the third working position 24 are respectively located on the adjacent sides of the mounting position 21. When there is only one grinding assembly 30, the battery cell 100 only needs to adjust the position once to complete the welding slag cleaning. When there are two grinding assemblies 30, the welding slag can be completely cleaned without adjusting the position of the battery cell 100, which saves the process of adjusting the position of the battery cell 100 and improves the efficiency of welding slag cleaning.

[0136] In this embodiment, the second working position 23 and the third working position 24 are respectively arranged on the adjacent two sides of the installation position 21; because the grinding component 30 moves from the first working position 22 to the third working position 24 via the second working position 23, the second working position 23 and the third working position 24 are respectively located on the adjacent two sides of the installation position 21, so that the grinding component 30 can grind the two sides of the battery cell 100 during the movement, thereby saving the process of adjusting the position of the battery cell 100 multiple times and grinding again, and improving the efficiency of welding slag cleaning.

[0137] refer to Figure 5 In some embodiments, the movement trajectory of the grinding assembly 30 in the second working position 23 is parallel to the side of the opposite battery cell 100 , and the movement trajectory of the grinding assembly 30 in the third working position 24 is parallel to the side of the opposite battery cell 100 .

[0138] The movement trajectory of the grinding component 30 in the second working position 23 is parallel to the side of the relative battery cell 100, which means that during the movement of the grinding component 30 in the second working position 23, the distance between the grinding component 30 and the side of the relative battery cell 100 remains equal or approximately equal, that is, during the movement of the grinding component 30 in the second working position 23, the value of H1 in the figure remains equal.

[0139] The movement trajectory of the grinding assembly 30 in the third working position 24 is parallel to the side of the relative battery cell 100, which means that during the movement of the grinding assembly 30 in the third working position 24, the distance between the grinding assembly 30 and the side of the relative battery cell 100 remains equal or approximately equal, that is, during the movement of the grinding assembly 30 in the third working position 24, the value of H1 in the figure remains equal.

[0140] Because the ability of the grinding assembly 30 to clean welding slag is also affected by the distance between the grinding assembly 30 and the side of the relative battery cell 100, if the distance between the grinding assembly 30 and the side of the relative battery cell 100 changes, the pressure applied by the grinding assembly 30 to the side of the relative battery cell 100 will also change accordingly, which can easily cause the side of the battery cell 100 to become uneven.

[0141] The grinding assembly 30 always maintains the same distance from the mounting position 21 during the movement in the second working position 23 and the third working position 24, so that during the grinding process, the friction of various parts of the battery cell 100 that need to be in the non-covered area 132 can be the same or approximately the same, so that the side surfaces of the battery cell 100 relative to the second working position 23 can be uniformly polished and form a relatively flat surface after grinding, and the side surfaces of the battery cell 100 relative to the third working position 24 can be uniformly polished and form a relatively flat surface after grinding.

[0142] In this embodiment, the movement trajectory of the grinding component 30 in the second working position 23 is parallel to the side of the relative battery cell 100, and the movement trajectory of the grinding component 30 in the third working position 24 is parallel to the side of the relative battery cell 100; this setting can ensure that the distance between the grinding component 30 and the side of the relative battery cell 100 is always equal or approximately equal, so that the grinding component 30 can more evenly grind different locations of the corresponding side of the battery cell 100, thereby reducing the occurrence of uneven treatment at various locations.

[0143] refer to Figure 5 In some embodiments, the distance between the movement trajectory of the grinding assembly 30 in the second working position 23 and the side of the relative battery cell 100 is equal to the distance between the movement trajectory of the grinding assembly 30 in the third working position 24 and the side of the relative battery cell 100 .

[0144] The distance between the movement trajectory of the grinding assembly 30 in the second working position 23 and the side surface of the corresponding battery cell 100 is the distance shown by H1 in the figure; the distance between the movement trajectory of the grinding assembly 30 in the third working position 24 and the side surface of the corresponding battery cell 100 is the distance shown by H2 in the figure.

[0145] When the grinding component 30 moves from the first working position 22 to the second working position 23 to the third working position 24, H1 is equal to H2, so that the grinding component 30 can grind the two adjacent sides of the battery cell 100 more evenly, so that the sides of the battery cell 100 opposite to the second working position 23 and the third working position 24 have the same or approximately the same state after being polished by the grinding component 30, that is, the welding slag grinding condition, flatness, etc. on the two adjacent sides of the battery cell 100 are the same or approximately the same, thereby reducing the negative impact of the grinding process of the grinding component 30 on the battery cell 100.

[0146] In this embodiment, the distance between the grinding component 30 and the side of the battery cell 100 when it is in the second working position 23 is equal to the distance between the grinding component 30 and the side of the battery cell 100 when it is in the third working position 24, so that the grinding component 30 can grind the adjacent sides of the battery cell 100 more evenly, so that the grinding effects of the grinding component 30 on the adjacent sides of the battery cell 100 can be the same or approximately the same, and the appearances of the adjacent sides of the battery cell 100 after grinding can be the same or approximately the same, so as to reduce the negative effects such as appearance changes that may be caused by the grinding of different sides of the battery cell 100 by the grinding component 30.

[0147] refer to Figure 5 In some embodiments, the grinding assembly 30 can move at the same speed in the second working station 23 and / or the third working station 24 .

[0148] The grinding assembly 30 can move at the same speed in the second working position 23, that is, the grinding assembly 30 can pass through the second working position 23 at a uniform speed; the specific speed of the grinding assembly 30 in the second working position 23 can be determined according to parameters such as the friction frequency of the grinding assembly 30 and the distance between the grinding assembly 30 and the side of the relative battery cell 100, so that the grinding assembly 30 can effectively rub the welding slag to the desired size during the movement on the shell 13.

[0149] The grinding component 30 can also move at the same speed in the third working position 24, that is, the grinding component 30 can pass through the third working position 24 at a uniform speed; the specific speed of the grinding component 30 in the third working position 24 can be determined according to parameters such as the friction frequency of the grinding component 30 and the distance between the grinding component 30 and the side of the relative battery cell 100, so that the grinding component 30 can effectively rub the welding slag to the desired size during the movement on the shell 13.

[0150] The polishing assembly 30 can also move at the same speed in the second working position 23 and the third working position 24, that is, the polishing assembly 30 moves uniformly in the second working position 23 and the third working position 24; it can be understood that according to the different polishing requirements of different sides of the battery cell 100, the polishing assembly 30 can also move uniformly in the second working position 23 and the third working position 24 at different speeds.

[0151] Due to the influence of the grinding time of the welding slag, the grinding component 30 moves at a uniform speed in the second working position 23 and the third working position 24, so that the grinding component 30 can grind the different locations of the corresponding surface of the battery cell 100 more evenly, thereby reducing the uneven treatment of various locations, enhancing the welding slag cleaning effect, and reducing the welding slag residue caused by the position offset of the grinding component 30.

[0152] In this embodiment, the grinding component 30 can move at a uniform speed while passing through the second working station 23 or the third working station 24, so as to further enable the grinding component 30 to grind different locations of the corresponding sides of the battery cell 100 more evenly, and at the same time reduce the occurrence of welding slag residue that may be caused by insufficient grinding time; the grinding component 30 can also move at the same speed in the second working station 23 and the third working station 24, so that the grinding effect of the grinding component 30 on the adjacent sides of the battery cell 100 can be the same or approximately the same, and the appearance of the adjacent sides of the battery cell 100 after grinding can be the same or approximately the same, so as to reduce the negative effects such as appearance changes that may be caused by the grinding of different sides of the battery cell 100 by the grinding component 30.

[0153] refer to Figure 2 In some embodiments, the welding slag cleaning device 200 further includes an avoidance position 25 disposed on a side of the third working position 24 away from the mounting position 21 , and the grinding assembly 30 can move from the third working position 24 to the avoidance position 25 .

[0154] The avoidance position 25 refers to a spatial structure in the welding cleaning equipment for accommodating the grinding assembly 30. The grinding assembly 30 can enter the avoidance position 25 and can also move from the avoidance position 25 to other positions; the avoidance position 25 can be a spatial structure set in a space, or it can be a spatial structure surrounded by structural parts; the shape of the avoidance position 25 can be square, circular or other shapes.

[0155] The avoidance position 25 is arranged on the side of the third working position 24 away from the installation position 21, and the distance between the avoidance position 25 and the installation position 21 is larger than the distance between the third working position 24 and the installation position 21; the avoidance position 25 is used to accommodate the grinding component 30 after grinding, that is, the grinding component 30 can move to the avoidance position 25 after grinding. Because the avoidance position 25 is far away from the installation position 21, before the grinding component 30 is closed, when the grinding component 30 is in the avoidance position 25, it can reduce accidental touching and accidental grinding of the battery cell 100, and can also reduce accidental touching and accidental grinding of other structures or devices in the welding slag cleaning equipment 200.

[0156] Based on the function of the avoidance position 25 to reduce accidental contact and accidental grinding of the grinding component 30, a shielding structure can be set around the avoidance position 25 to shield the grinding component 30, or the avoidance position 25 can be set at a certain position so that the grinding component 30 is not likely to accidentally touch the battery cell 100 or other structures when in the avoidance position 25.

[0157] The grinding assembly 30 can move from the third working position 24 to the avoidance position 25, so that the grinding assembly 30 can move to the avoidance position 25 after the grinding process to reduce accidental contact and accidental grinding of the battery cell 100 or other structures. When the grinding assemblies 30 are arranged on the opposite sides of the installation position 21, this arrangement can also reduce the occurrence of collision or mutual influence between the two grinding assemblies 30.

[0158] In this embodiment, an avoidance position 25 is provided to enable the grinding component 30 to move from the third working position 24 to the avoidance position 25, so as to reduce the occurrence of the grinding component 30 accidentally grinding the battery cell 100 after the grinding process is completed, and also reduce the occurrence of the grinding component 30 accidentally grinding other structures in the welding slag cleaning equipment 200.

[0159] refer to Figure 2 In some embodiments, the welding slag cleaning equipment 200 also includes a waiting position 26 located on the side of the first working position 22 away from the installation position 21, and the grinding component 30 can move from the avoidance position 25 to the waiting position 26, and the grinding component 30 can move from the waiting position 26 to the first working position 22.

[0160] The waiting position 26 refers to a spatial structure in the welding cleaning equipment for accommodating the grinding assembly 30. The grinding assembly 30 can enter the waiting position 26 and can also move from the waiting position 26 to other positions; the waiting position 26 can be a spatial structure set in a space, or it can be a spatial structure surrounded by structural parts; the shape of the waiting position 26 can be square, circular or other shapes.

[0161] The waiting position 26 is arranged on the side of the first working position 22 away from the installation position 21, and the distance between the waiting position 26 and the installation position 21 is larger than the distance between the first working position 22 and the installation position 21; the waiting position 26 is used to accommodate the grinding assembly 30 before the battery cell 100 is placed in the installation position 21, and to enable the grinding assembly 30 to move from the waiting position 26 to the first working position 22. Because the waiting position 26 is far away from the installation position 21, during the startup process of the grinding assembly 30, when the grinding assembly 30 is at the waiting position 26, it can reduce accidental touching and grinding of the battery cell 100, and can also reduce accidental touching and grinding of other structures or devices in the welding slag cleaning equipment 200.

[0162] The polishing assembly 30 can move from the avoidance position 25 to the waiting position 26, so that the polishing assembly 30 can move to the waiting position 26 after the polishing process and wait for the battery cell 100 to be placed in the installation position 21; the polishing assembly 30 can also move from the waiting position 26 to the first working position 22. During this process, the polishing assembly 30 can be started and related parameters such as polishing frequency and movement speed can be adjusted.

[0163] In this embodiment, a waiting position 26 is provided so that the polishing assembly 30 can move from the avoidance position 25 to the waiting position 26 or from the waiting position 26 to the first working position 22 , thereby facilitating the polishing assembly 30 to polish the next battery cell 100 .

[0164] In some embodiments, the welding slag cleaning device 200 further includes a moving component, which is used to drive the grinding component 30 to move relative to the mounting position 21.

[0165] The moving component refers to the structure in the welding slag cleaning equipment 200 that drives the grinding component 30 to move. The moving component may include a trolley, a manipulator and other structures to drive the grinding component 30 to move; the moving component can drive the grinding component 30 to move between the first working position 22, the second working position 23, the third working position 24, the avoidance position 25 and the waiting position 26, and the moving component can also drive the grinding component 30 to move in the first working position 22, the second working position 23, the third working position 24, the avoidance position 25 and the waiting position 26.

[0166] Specifically, the mobile component may include a track and a trolley running on the track, the trolley can carry the grinding component 30, and the track should be able to pass through the first working position 22, the second working position 23, the third working position 24, the avoidance position 25 and the waiting position 26; the mobile component may also include a manipulator, and the manipulator can drive the grinding component 30 to move; the mobile component may also include a conveyor belt, and the conveyor belt can carry the grinding component 30. At this time, the grinding component 30 is arranged on the conveyor belt, and the conveyor belt can pass through the first working position 22, the second working position 23, the third working position 24, the avoidance position 25 and the waiting position 26; it can be understood that the mobile component can also include other structures that can drive the grinding component 30 to move, and is not limited to the above-mentioned ones.

[0167] In this embodiment, the welding slag cleaning device 200 further includes a moving component, and the moving component drives the grinding component 30 to move, so that the grinding component 30 can grind the welding slag at different positions on the battery cell 100 .

[0168] According to some embodiments of the present application, reference Figure 6 , Figure 6 A front schematic diagram of a material moving assembly 40 in a welding slag cleaning device 200 provided in some embodiments of the present application.

[0169] In some embodiments of the present application, the welding slag cleaning device 200 further includes a material moving assembly 40 for moving the battery cells 100 .

[0170] The material moving assembly 40 refers to a structure in the welding slag cleaning equipment 200 for obtaining and transporting battery cells 100. The material moving assembly 40 can obtain battery cells 100 from other locations or other equipment and transport the battery cells 100 to the installation position 21. The material moving assembly 40 can also obtain battery cells 100 from the installation position 21 and transport the battery cells 100 to other locations or other equipment; that is, in the welding slag cleaning equipment 200, the material moving assembly 40 is mainly used for loading and unloading battery cells 100; the material moving assembly 40 may include a splint, a manipulator or other structures.

[0171] After the grinding component 30 passes through the battery cell 100 and the grinding process is completed, the material moving component 40 can take the battery cell 100 out of the installation position 21 and place it in other required positions, that is, the material moving component 40 can perform a material unloading action, and then the material moving component 40 can also obtain the battery cell 100 that has not been cleaned by welding slag and place the battery cell 100 in the installation position 21, that is, the material moving component 40 can also perform a material loading action; in the process of the material moving component 40 performing the unloading action and the loading action, the grinding component 30 moves to the waiting position 26 via the third working position 24 and the avoidance position 25 in turn; when the battery cell 100 is placed in the installation position 21, the grinding component 30 can move from the waiting position 26 via the first working position 22 to the second working position 23, and move in the second working position 23 to grind the battery cell 100.

[0172] In this embodiment, a material moving assembly 40 is provided to place the battery cell 100 on the installation position 21 through the material moving assembly 40 , and the battery cell 100 can also be taken out from the installation position 21 through the material moving assembly 40 , thereby achieving the effect of loading and unloading.

[0173] refer to Figure 6 In some embodiments, on the side of the material moving assembly 40 facing the polishing assembly 30, the material moving assembly 40 covers a portion of the battery cell 100 and forms a covering area 131. The material moving assembly 40 can also form a non-covering area 132 on the battery cell 100 outside the covering area 131; the polishing assembly 30 can polish the non-covering area 132.

[0174] The coverage area 131 refers to the area on the side of the battery cell 100 covered by the material moving component 40. Specifically, after the material moving component 40 obtains the battery cell 100, the material moving component 40 will cover most of the side of the battery cell 100, and the area covered by the material moving component 40 is called the coverage area 131; the area size of the coverage area 131 can be determined by setting relevant parameters of the material moving component 40. For example, the area size of the side of the battery cell 100 covered by the material moving component 40 can be limited by limiting the material picking position of the material moving component 40.

[0175] The non-covered area 132 refers to the area on the battery cell 100 that is not covered by the material moving assembly 40 and is exposed to the outside world. According to the arrangement of the welding slag, the non-covered area 132 may refer to all areas on the battery cell 100 that are not covered by the material moving assembly 40, or may only be part of the area that is not covered by the material moving assembly 40; the grinding assembly 30 may move in the non-covered area 132 and grind the welding slag in the non-covered area 132; because the welding slag is usually formed near the weld, the non-covered area 132 may be near the weld between the end cover 11 and the shell 13.

[0176] The range of the non-covered area 132 is generally determined according to the range of slag formation, so that most of the slag on the battery cell 100 can be within the non-covered area 132 .

[0177] After the material moving component 40 places the battery cell 100 at the installation position 21, the material moving component 40 can cover the covering area 131 of the battery cell 100 to reduce the situation where the covering area 131 is accidentally touched by the grinding component 30 without friction, and can also reduce the negative impact of impurities generated during the grinding process on the covering area 131, thereby protecting the covering area 131 of the battery cell 100 and the corresponding part of the covering area 131.

[0178] In this embodiment, the material moving component 40 is able to cover a partial area of ​​the battery cell 100 and form a covering area 131. At this time, the material moving component 40 can protect the corresponding surface of the battery cell 100 in the covering area 131 to reduce the negative impact that metal chips or other impurities formed during grinding by the grinding component 30 may have on the corresponding surface of the battery cell 100; at the same time, the material moving component 40 can also form a non-covering area 132 on the corresponding surface of the battery cell 100 that is not covered by the material moving component 40, so that the grinding component 30 can emit and grind the welding slag in the non-covering area 132.

[0179] refer to Figure 6 In some embodiments, in the height direction of the battery cell 100 , the size of the non-covered area 132 ranges from 1 mm to 5 mm.

[0180] The height direction of the battery cell 100 is Figure 6 In the direction where the middle Z axis is located, the dimension of the non-covered area 132 in the height direction of the battery cell 100 is the height of the non-covered area 132 .

[0181] The size of the non-covered area 132 in the height direction (Z) of the battery cell 100 ranges from 1 mm to 5 mm, and may specifically be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm or other values.

[0182] Since the distance between the welding slag and the weld between the end cover 11 and the shell 13 is usually between 1mm and 5mm, and since the non-covered area 132 is the area where the grinding assembly 30 performs grinding processing, the range of the non-covered area 132 is 1mm to 5mm, so that most of the welding slag on the battery cell 100 can be within the non-covered area 132, and the grinding of other positions of the battery cell 100 by the grinding assembly 30 can be reduced, thereby reducing the negative impact that the grinding assembly 30 may have on the battery cell 100, and at the same time, it can also reduce the cleaning time of the grinding assembly 30 for each battery cell 100, thereby improving the cleaning efficiency.

[0183] This embodiment provides some specific dimensions of the non-covered area 132, so that the dimension of the non-covered area 132 in the height direction of the battery cell 100 is between 1mm and 5mm. Since the welding slag generated during the formation of the weld is usually formed in the area of ​​1mm to 5mm near the weld, setting this range can enable the grinding assembly 30 to clean most of the welding slag on the corresponding surface of the battery cell 100, and can also reduce the negative impact that the grinding assembly 30 may have on other areas of the battery cell 100.

[0184] refer to Figure 6 In some embodiments, the material moving assembly 40 includes two oppositely disposed clamping plates 41 to clamp the battery cell 100 .

[0185] The clamping plate 41 refers to a component in the material transfer assembly 40 that can contact the battery cell 100 . The shape of the clamping plate 41 can be a plate, a strip, or other shapes; the material of the clamping plate 41 can be plastic, metal, or other materials.

[0186] The two clamps 41 can be close to each other and clamp the battery cell 100, or the two clamps 41 can be away from each other and release the battery cell 100; the two clamps 41 can be clamped on the opposite sides of the battery cell 100, and form a covering area 131 and a non-covering area 132 on the corresponding sides of the shell 13; the clamps 41 can be driven by electronic devices such as cylinders and hydraulic cylinders, or by mechanical structures such as motors and screws; the material moving assembly can also include a bracket to provide a fixed foundation for the clamps 41 and other structures.

[0187] This embodiment provides some specific structures of the material moving assembly 40, so that the material moving assembly 40 includes two relatively arranged clamping plates 41, so as to clamp the battery cell 100 through the two clamping plates 41 and drive the battery cell 100 to move; at the same time, the clamping plates 41 can also cover part of the battery cell 100 to form a covering area 131 and a non-covering area 132.

[0188] According to some embodiments of the present application, reference Figures 3 to 5 , Figures 3 to 5 A schematic diagram of the positions of various workstations in a welding slag cleaning device 200 provided for some different embodiments of the present application.

[0189] In some embodiments of the present application, the welding slag cleaning device 200 includes two grinding assemblies 30 , and the two grinding assemblies 30 are respectively disposed on opposite sides of the installation position 21 .

[0190] The two grinding assemblies 30 are respectively arranged on opposite sides of the installation position 21. After the battery cell 100 is placed in the installation position 21, the two grinding assemblies 30 can grind the two opposite sides of the battery cell 100 at the same time, thereby further improving the efficiency of welding slag cleaning.

[0191] When processing the same battery cell 100 , the movement directions of the two polishing assemblies 30 may be the same or different; the two polishing assemblies 30 may start and stop moving at the same time, or may start and stop moving one after another.

[0192] It can be understood that when grinding assemblies 30 are provided on both sides of the mounting position 21, the first working position 22, the second working position 23, the third working position 24, the avoidance position 25 and the waiting position 26 are respectively provided on both sides of the mounting position 21, and each grinding assembly 30 is correspondingly configured with a moving assembly.

[0193] In this embodiment, the welding slag cleaning device 200 includes two grinding assemblies 30, so that the two grinding assemblies 30 can grind two opposite side surfaces of the battery cell 100 at the same time, thereby improving the cleaning efficiency of the welding slag.

[0194] refer to Figures 2 to 5 In some embodiments, the two grinding assemblies 30 can move relative to the mounting position 21 in the same direction; or the two grinding assemblies 30 can move relative to the mounting position 21 in opposite directions.

[0195] The two grinding assemblies 30 move in the same direction, which means that the first working position 22 , the second working position 23 and the third working position 24 on both sides of the installation position 21 are arranged relatively.

[0196] The two grinding assemblies 30 move in different ways along the same direction. In some embodiments, the two grinding assemblies 30 move synchronously in the same direction, that is, the two grinding assemblies 30 can move from the first working position 22 to the second working position 23 to the third working position 24 at the same time, and can also move from the third working position 24 to the waiting position 26 via the avoidance position 25 at the same time, and can also move from the waiting position 26 to the first working position 22 at the same time; in other embodiments, the two grinding assemblies 30 can move in the same direction successively, that is, the two grinding assemblies 30 can move from the first working position 22 to the second working position 23 successively. At the third working position 24, when the grinding component 30 that moves first moves from the third working position 24 to the avoidance position 25, the grinding component 30 that moves later moves from the second working position 23 to the third working position 24; when the grinding component 30 that moves first moves from the first working position 22 to the second working position 23, the grinding component 30 that moves later moves from the waiting position 26 to the first working position 22. This arrangement can reduce the situation where the two grinding components 30 are facing each other, thereby reducing the mutual influence that may be caused by the two grinding components 30 accidentally touching or grinding.

[0197] The two grinding assemblies 30 move in opposite directions respectively, which means that the first working position 22 on one side of the installation position 21 is opposite to the third working position 24 on the other side, and the third working position 24 on one side of the installation position 21 is opposite to the first working position 22 on the other side.

[0198] Both of the two grinding assemblies 30 move in sequence along the first working position 22, the second working position 23, the third working position 24, the avoidance position 25 and the waiting position 26. Due to the different positions of the first working position 22, the third working position 24, the avoidance position 25 and the waiting position 26, the two grinding assemblies 30 can move in opposite directions respectively.

[0199] Making the two grinding assemblies 30 move in opposite directions can further reduce the occurrence of the two grinding assemblies 30 facing each other, thereby reducing the negative impact that may be caused by the two grinding assemblies 30 hitting each other.

[0200] The two grinding assemblies 30 can move simultaneously, that is, the two grinding assemblies 30 move simultaneously from the waiting position 26 to the first working position 22, and then return to the waiting position 26 via the second working position 23, the third working position 24 and the avoidance position 25; the two grinding assemblies 30 can also move separately in sequence.

[0201] In this embodiment, the two grinding assemblies 30 are enabled to move in the same direction to simultaneously clean the welding slag on the two opposite sides of the battery cell 100, thereby improving the cleaning efficiency of the welding slag; the two grinding assemblies 30 are also enabled to move in opposite directions so that the two grinding assemblies 30 can simultaneously clean the welding slag, thereby improving the cleaning efficiency of the welding slag; at the same time, it can also reduce the damage of the grinding assemblies 30 that may be caused by the collision and friction between the two grinding assemblies 30, thereby reducing the failure rate of the welding slag cleaning equipment 200 and improving its service life.

[0202] According to some embodiments of the present application, reference Figures 7 to 11 ,in, Figure 7 A three-dimensional schematic diagram of a grinding assembly 30 in a welding slag cleaning device 200 provided in some embodiments of the present application, Figure 8 A schematic side view of a grinding assembly 30 provided in some embodiments of the present application, Fig. 9 A schematic top view of a grinding assembly 30 provided in some embodiments of the present application, Fig.10 A three-dimensional schematic diagram of a part of the structure of the grinding assembly 30 provided in some embodiments of the present application, Fig.11 A front view schematically shows a grinding wheel 32 in a grinding assembly 30 provided in some embodiments of the present application.

[0203] In some embodiments of the present application, the grinding assembly 30 includes a first base 31 and a grinding wheel 32 and a first driving structure 33 disposed on the first base 31 . The grinding wheel 32 is rotatably disposed on the first base 31 , and the first driving structure 33 is used to drive the grinding wheel 32 to rotate.

[0204] The first base 31 refers to a structure in the grinding assembly 30 that provides a fixed foundation for the grinding wheel 32, the first driving structure 33 or other structures. The first base 31 can move with the movement of the grinding assembly 30 to drive the grinding wheel 32, the first driving structure 33 and other structures carried on the first base 31 to move; the material of the first base 31 can be plastic, metal or other materials; the first base 31 can be rectangular, circular or other shapes.

[0205] The grinding wheel 32 refers to the structure for grinding the battery cell 100 in the grinding assembly 30. The material of the grinding wheel 32 may include corundum, silicon carbide, ceramic or other materials. In order to increase friction and enhance the grinding ability, friction lines, friction protrusions and other structures for increasing friction may be set on the surface of the grinding wheel 32 that contacts the battery cell 100; the thickness of the grinding wheel 32 can be determined according to the height of the non-covered area 132, so that the grinding wheel 32 can cover the non-covered area 132 in the height direction, so that the grinding assembly 30 can move from the first working position 22 to the third working position 24 once to grind the entire non-covered area 132 once.

[0206] The grinding wheel 32 is arranged on the first base 31 and can rotate relative to the first base 31. When the grinding assembly 30 grinds the shell 13, the grinding wheel 32 can also rotate relative to the shell 13 to gradually grind the welding slag or other protrusions on the shell 13, thereby increasing the flatness of the side of the battery cell 100 and reducing the occurrence of welding slag entering the interior of the battery.

[0207] The first driving structure 33 refers to a structure in the grinding assembly 30 for driving the grinding wheel 32 to rotate. The first driving structure 33 is arranged on the first base 31; the first driving structure 33 may include electronic components such as motors and rotary cylinders that can provide rotary force. The first driving structure 33 may also include structures such as crank rocker mechanisms to convert linear power into rotational power and drive the grinding wheel 32 to rotate. The first driving structure 33 may also include a transmission structure 39 and drive the grinding wheel 32 to rotate through the transmission structure 39. The transmission structure 39 may include a gear set, a pulley set, a sprocket set or other transmission structures 39.

[0208] When the battery cell 100 needs to be polished, the first driving structure 33 is started and drives the polishing wheel 32 to rotate, and the first base 31 can approach and contact the side of the battery cell 100 to polish the corresponding side of the battery cell 100 .

[0209] The present embodiment provides some specific structures of the grinding assembly 30, wherein the grinding wheel 32 and the first driving structure 33 are both arranged on the first base 31, so that the first driving structure 33 and the grinding wheel 32 are supported by the first base 31, thereby facilitating the control of the grinding position of the grinding wheel 32 by controlling the position of the first base 31; the grinding wheel 32 is driven to rotate by the first driving structure 33, so that the grinding wheel 32 can grind the side surfaces of the opposite battery cell 100.

[0210] refer to Fig.11 In some embodiments, the grinding wheel 32 includes a base 321 rotatably connected to the first base 31 and a grinding portion 322 disposed around the base 321; the grinding portion 322 includes a stainless steel structure, a ceramic structure or a wire brush structure.

[0211] The base 321 refers to a structure in the grinding wheel 32 that is connected to the first base 31 and the first driving structure 33. The base 321 can be rotatably connected to the first base 31, and the base 321 can be connected to the first driving structure 33; the material of the base 321 can include corundum, silicon carbide, ceramics or other materials used for grinding, and can also include plastics, metals and other materials mainly used to provide support; the shape of the base 321 can be circular, rectangular, diamond or other shapes.

[0212] The grinding portion 322 refers to a structure in the grinding wheel 32 used for relative friction with the shell 13. The grinding portion 322 is arranged on the base 321. Specifically, the grinding portion 322 can be detachably connected to the base 321 by bolts, snaps and other structures, and the grinding portion 322 can also be fixedly connected to the base 321 by welding or gluing. Because the grinding portion 322 is used to contact and grind the shell 13, and the grinding portion 322 is a circular structure, and because the grinding portion 322 is arranged around the base 321, a space for accommodating the base 321 is provided inside the grinding portion 322. When the base 321 rotates, the grinding portion 322 can rotate with the base 321 and rub against the shell 13 to grind the welding slag on the shell 13.

[0213] The material of the grinding part 322 includes a stainless steel structure, a ceramic structure or a wire brush structure, wherein the grinding part 322 of the stainless steel structure has the advantages of high strength, high wear resistance, and low surface roughness. The grinding part 322 of the stainless steel structure is not easy to leave rough grinding marks on the shell 13, which can reduce the damage to the shell 13, and the grinding precision is easy to control; the grinding part 322 of the ceramic structure has the advantages of high strength, good heat resistance, and low surface roughness. The grinding part 322 of the ceramic structure is not easy to leave rough grinding marks on the shell 13, which can reduce the damage to the shell 13, and the grinding precision is easy to control; the wire brush structure refers to a structure including a plurality of wire bristles. The grinding part 322 of the wire brush structure makes the wire brush bristles contact with the shell 13 when in use. The grinding part 322 of the wire brush structure has a certain deformation ability during the grinding process, thereby reducing the damage to the shell 13.

[0214] This embodiment provides some specific structures of the grinding wheel 32, so that the base 321 can be connected to the first base 31, and the first driving structure 33 can be connected to the base 321 to drive the grinding wheel 32 to rotate; the grinding wheel 32 can also grind the battery cell 100 through the grinding part 322; the grinding part 322 can be a wire brush structure, because the wire brush structure has a certain deformation ability on the basis of being able to grind welding slag, and on the basis of being able to clean welding slag, this setting can reduce the wear of the grinding part 322 on the side of the battery cell 100; the grinding part 322 can also be a ceramic structure or a stainless steel structure, because the ceramic structure and the stainless steel structure are smoother, and on the basis of being able to clean welding slag, this setting can reduce the wear of the grinding part 322 on the side of the battery cell 100, and at the same time enable the grinding wheel 32 to have higher grinding accuracy.

[0215] In some embodiments, the grinding assembly 30 further includes an auxiliary mechanism disposed on the first base 31. The auxiliary structure may include an angle adjustment structure to adjust the angle between the grinding wheel 32 and the side of the housing 13 to meet different requirements; the auxiliary structure may also include a distance sensor to obtain the distance between the first base 31 and the side of the housing 13, thereby facilitating the control of the pressure between the grinding wheel 32 and the housing 13.

[0216] In some embodiments, the grinding wheel 32 has a thickness ranging from 1 mm to 5 mm.

[0217] The thickness of the grinding wheel 32 refers to the size of the grinding wheel 32 in the height direction (Z) of the battery cell 100. Specifically, the thickness of the grinding wheel 32 may be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm or other values.

[0218] Since the distance between the welding slag and the weld between the end cover 11 and the shell 13 is usually between 1mm and 5mm, the thickness range of the grinding wheel 32 is also between 1mm and 5mm, so that the grinding wheel 32 can clean most of the welding slag on the battery cell 100 in one movement of the grinding assembly 30 from the first working position 22 to the third working position 24, thereby improving the cleaning efficiency; at the same time, it can also reduce the grinding of other positions of the battery cell 100 by the grinding wheel 32, thereby reducing the negative impact that the grinding wheel 32 may have on the battery cell 100; and since the range of the non-covered area 132 is between 1mm and 5mm, the thickness range of the grinding wheel 32 is also between 1mm and 5mm to adapt to the range of the non-covered area 132.

[0219] The present embodiment provides some specific structures of the grinding wheel 32. Since the welding slag generated during the welding process is usually formed in the area of ​​1mm to 5mm near the welding seam, the size of the grinding wheel 32 corresponds to the area where the welding slag is formed, so that the grinding wheel 32 can cover the area where the welding slag is formed, so that the grinding assembly 30 can clean the welding slag on the side relative to the battery cell 100 with a single movement without reciprocating motion and adjusting the height or angle, thereby improving the efficiency of welding slag cleaning.

[0220] refer to Figures 7 to 10 In some embodiments, the grinding assembly 30 further includes a second base 34 and a second driving structure 35 disposed on the second base 34 . A first base 31 is further disposed on the second base 34 , and the second driving structure 35 is used to drive the first base 31 to move closer to or away from the mounting position 21 .

[0221] The second base 34 refers to a structure in the grinding assembly 30 that provides a fixed foundation for the first base 31, the second driving structure 35 or other structures. The second base 34 can move with the movement of the grinding assembly 30 to drive the grinding wheel 32, the second driving structure 35 and other structures carried on the second base 34 to move; the material of the second base 34 can be plastic, metal or other materials; the second base 34 can be rectangular, circular or other shapes.

[0222] The second driving structure 35 refers to a structure in the grinding assembly 30 for driving the first base 31 to move relative to the second base 34. The second driving structure 35 is arranged on the second base 34. The second driving structure 35 may include electronic components such as cylinders, hydraulic cylinders, and electric cylinders that can provide linear power. The second driving structure 35 may also include structures such as ball screw structures to convert rotational power into linear power and drive the first base 31 to move relative to the second base 34.

[0223] The second driving structure 35 is used to drive the first base 31 to move relative to the second base 34, so that the first base 31 can be close to or away from the side of the shell 13, and thereby control the pressure between the grinding wheel 32 and the side of the shell 13, thereby controlling the grinding effect; at the same time, the second driving structure 35 can also play a role in maintaining the position of the grinding wheel 32, so that the grinding wheel 32 can provide the same or approximately the same pressure to the shell 13 during the process of the grinding assembly 30 moving from the first working position 22 to the third working position 24, so that the grinding effect of the grinding wheel 32 on the shell 13 can be consistent or approximately consistent.

[0224] The second driving structure 35 drives the first base 31 to move in a direction close to or away from the battery cell 100 , and can also enable the welding slag cleaning device 200 to adapt to battery cells 100 of various sizes, thereby increasing the compatibility of the welding slag cleaning device 200 .

[0225] The present embodiment further provides some specific structures of the grinding assembly 30, in which the first base 31 is supported by the second base 34, so that the grinding position of the grinding wheel 32 can be controlled by controlling the position of the second base 34; the position of the first base 31 relative to the second base 34 is adjusted by the second driving structure 35, and the second driving structure 35 can drive the first base 31 to approach or move away from the battery cell 100, so as to adjust the pressure between the grinding wheel 32 and the side of the relative battery cell 100, thereby achieving the adjustment of the friction force and the adjustment of the grinding effect. At the same time, the setting of the second driving structure 35 can also enable the welding slag cleaning device 200 to adapt to battery cells 100 of various sizes, thereby increasing the compatibility of the welding slag cleaning device 200.

[0226] refer to Figures 7 to 10 In some embodiments, the grinding assembly 30 also includes a third base 36 and a third driving structure 37 disposed on the third base 36 . A second base 34 is also disposed on the third base 36 , and the third driving structure 37 is used to drive the second base 34 to move relative to the third base 36 .

[0227] The third base 36 refers to a structure in the grinding assembly 30 that provides a fixed foundation for the second base 34, the third driving structure 37 or other structures; the material of the third base 36 can be plastic, metal or other materials; the third base 36 can be rectangular, circular or other shapes.

[0228] The third driving structure 37 refers to a structure in the grinding assembly 30 for driving the second base 34 to move relative to the third base 36. The third driving structure 37 is arranged on the third base 36; the third driving structure 37 is used to drive the second base 34 to move relative to the third base 36, so that the second base 34 can move relative to the shell 13 and clean the welding slag on the side of the shell 13.

[0229] The third driving structure 37 may include electronic components such as air cylinders, hydraulic cylinders, and electric cylinders that can provide linear power. The third driving structure 37 may also include structures such as ball screw structures to convert rotary power into linear power and drive the second base 34 to move relative to the third base 36; at this time, the welding slag cleaning equipment 200 includes a structure that can drive the grinding assembly 30 to move along the trajectory of the first working position 22, the second working position 23, the third working position 24, the avoidance position 25, and the waiting position 26, such as a conveyor belt structure, a tracking trolley structure, etc.

[0230] The third driving structure 37 may also include a conveyor belt structure and other structures to drive the second base 34 and the third driving structure 37 to move along the trajectory of the first working position 22, the second working position 23, the third working position 24, the avoidance position 25, and the waiting position 26.

[0231] The present embodiment further provides some specific structures of the grinding assembly 30, wherein the second base 34 is supported by the third base 36 to control the grinding position of the grinding wheel 32; the movement of the second base 34 is driven by the third driving structure 37 to adjust the position of the grinding wheel 32, so that the grinding wheel 32 can move relative to the battery cell 100 and cover the area that needs to be polished on the side relative to the battery cell 100.

[0232] refer to Figures 7 to 10 In some embodiments, the grinding assembly 30 further includes a dust suction structure 38 .

[0233] The dust suction structure 38 refers to a structure in the grinding component 30 for absorbing fallen welding slag. The dust suction structure 38 can also be used to absorb other impurities that may be generated during the grinding process; the dust suction structure 38 may include a fan, and may also include an impurity container, a motor or other structures; the dust suction structure 38 may be arranged on the first base 31, or on the second base 34 or the third base 36.

[0234] During the grinding process of the grinding component 30, the dust suction structure 38 can absorb the fallen welding slag, metal debris or impurities that may be generated by the grinding process, so as to reduce the negative impacts such as short circuit and wear that the impurities may cause to the welding slag cleaning equipment 200 or other adjacent equipment, and also reduce the negative impact of the grinding process on the working environment.

[0235] In this embodiment, the grinding assembly 30 also includes a dust suction structure 38 to capture welding slag, metal chips or other impurities dropped by grinding, so as to reduce the negative impact of impurities formed after grinding on the battery cell 100, welding slag cleaning equipment 200 or the working environment.

[0236] According to some embodiments of the present application, the weld cleaning equipment includes a mounting position 21 and two grinding assemblies 30 arranged on opposite sides of the mounting position 21. The first mounting position 21, the second mounting position 21, the third mounting position 21, the avoidance position 25 and the waiting position 26 are axially symmetrically arranged on the opposite sides of the mounting position 21 so that the two grinding assemblies 30 can move in the same direction.

[0237] The grinding assembly 30 includes a first base 31 , on which a dust collecting structure 38 , a grinding wheel 32 , a first driving structure 33 and a transmission structure 39 are disposed. The first driving structure 33 drives the grinding wheel 32 to rotate via the transmission structure 39 .

[0238] The polishing assembly 30 further includes a second base 34 , on which the first base 31 and a second driving structure 35 are disposed. The second driving structure 35 is used to drive the first base 31 to move closer to or away from the mounting position 21 .

[0239] The polishing assembly further includes a third base 36 , on which a second base 34 and a third driving structure 37 are disposed. The third driving structure 37 is used to drive the second base 34 to move along a preset trajectory.

[0240] In some embodiments, referring to Table 1, Table 1 specifically provides the wear and service life of grinding wheels 32 of different materials under the conditions that the rotation speed of the grinding wheel 32 is 3000 revolutions per minute (r / min), the movement speed of the grinding assembly 30 in the second working position 23 is 300 millimeters per second (mm / s), the second driving structure 35 is a cylinder with a cylinder diameter of 10 mm and a pressure of 0.2 megapascals (MPa), and the grinding wheel 32 is perpendicular to the side of the shell 13.

[0241] Specifications Stainless steel grinding wheel Wire Brush Grinding Wheel Ceramic grinding wheel Initial diameter (mm) 59.9 59.9 78 Diameter after wear (mm) 59 59.6 68.8 Grinding times (times) 32000 64000 20000

[0242] Table 1

[0243] According to Table 1, compared with the grinding wheel 32 with a stainless steel structure and the grinding wheel 32 with a ceramic structure, the grinding wheel 32 with a wire brush structure has less wear and can be used more times, so the grinding portion 322 of the grinding wheel 32 can be a wire brush structure.

[0244] In a second aspect, some embodiments of the present application provide a battery production system, including the welding slag cleaning device 200 provided by some embodiments of the first aspect.

[0245] In some embodiments, the battery production system may include a first or two slag cleaning devices 200 .

[0246] When the battery production system includes a welding slag cleaning device 200, the position of the battery cell 100 can be adjusted so that the various side surfaces of the battery cell 100 are sequentially oriented toward the grinding assembly 30 to achieve welding slag cleaning on various side surfaces of the battery cell 100; or a welding slag cleaning device 200 can include two grinding assemblies 30, and each grinding assembly 30 can clean two adjacent sides of the battery cell 100, thereby achieving welding slag cleaning on various side surfaces of the battery cell 100.

[0247] When the battery production system includes two welding slag cleaning devices 200 , the two welding slag cleaning devices 200 can be used to clean two groups of opposite side surfaces of the battery cell 100 respectively, thereby achieving welding slag cleaning on each side surface of the battery cell 100 .

[0248] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A welding slag cleaning device, characterized in that: include: A mounting position for accommodating a battery cell; At least one polishing assembly, disposed on one side of the mounting position, the polishing assembly being used to polish the side surface of the battery cell; The welding slag cleaning device further includes a first working position, a second working position and a third working position which are sequentially arranged at intervals, wherein the second working position is arranged at one side of the mounting position so that the grinding assembly can grind the battery cell in the second working position; The grinding assembly can move from the first working position to the third working position via the second working position.

2. The welding slag cleaning equipment according to claim 1, characterized in that: The first working station, the second working station and the third working station are arranged in sequence along the first direction; During the movement of the grinding assembly from the first working position to the third working position, the distance between the grinding assembly and the mounting position in a direction perpendicular to the first direction remains equal.

3. The welding slag cleaning equipment according to claim 2, characterized in that: The grinding assembly can move at the same speed in the second working position.

4. The welding slag cleaning equipment according to claim 1, characterized in that: The second working position and the third working position are respectively arranged on two adjacent sides of the mounting position, so that the polishing assembly can perform polishing processing on the battery cell in both the second working position and the third working position.

5. The welding slag cleaning equipment according to claim 4, characterized in that: The movement trajectory of the grinding assembly in the second working position is parallel to the opposite side of the battery cell, and the movement trajectory of the grinding assembly in the third working position is parallel to the opposite side of the battery cell.

6. The welding slag cleaning equipment according to claim 5, characterized in that: The distance between the movement track of the grinding assembly in the second working position and the side surface of the battery cell opposite thereto is equal to the distance between the movement track of the grinding assembly in the third working position and the side surface of the battery cell opposite thereto.

7. The welding slag cleaning equipment according to claim 5, characterized in that: The grinding assembly can move at the same speed in the second working position and / or the third working position.

8. The welding slag cleaning equipment according to any one of claims 1 to 7, characterized in that: The welding slag cleaning device also includes an avoidance position arranged on a side of the third working position away from the installation position, and the grinding component can move from the third working position to the avoidance position.

9. The welding slag cleaning equipment according to claim 8, characterized in that: The welding slag cleaning equipment also includes a waiting position arranged on the first working position away from the installation position. The grinding component can move from the avoidance position to the waiting position, and the grinding component can move from the waiting position to the first working position.

10. The welding slag cleaning equipment according to any one of claims 1 to 7, characterized in that: The welding slag cleaning device also includes a moving component, and the moving component is used to drive the grinding component to move relative to the installation position.

11. The welding slag cleaning device according to any one of claims 1 to 7, characterized in that: The welding slag cleaning device also includes a material transfer assembly for transferring the battery cells.

12. The welding slag cleaning equipment according to claim 11, characterized in that: On a side of the material moving assembly facing the polishing assembly, the material moving assembly covers a portion of the battery cell and forms a covering area, and the material moving assembly can also form a non-covering area on the battery cell outside the covering area; The grinding component can perform grinding processing on the non-covered area.

13. The welding slag cleaning equipment according to claim 12, characterized in that: In the height direction of the battery cell, the size of the non-covered area ranges from 1 mm to 5 mm.

14. The welding slag cleaning equipment according to claim 12, characterized in that: The material moving assembly includes two clamping plates arranged opposite to each other to clamp the battery monomer.

15. The welding slag cleaning device according to any one of claims 1 to 7, characterized in that: The welding slag cleaning device comprises two grinding components, and the two grinding components are respectively arranged on opposite sides of the installation position.

16. The welding slag cleaning equipment according to claim 15, characterized in that: The two grinding assemblies can move relative to the mounting position in the same direction; Or the two grinding assemblies can move relative to the mounting position in opposite directions.

17. The welding slag cleaning equipment according to any one of claims 1 to 7, characterized in that: The grinding assembly includes a first base, a grinding wheel disposed on the first base, and a first driving structure. The grinding wheel is rotatably disposed on the first base, and the first driving structure is used to drive the grinding wheel to rotate.

18. The welding slag cleaning equipment according to claim 17, characterized in that: The grinding wheel comprises a base portion rotatably connected to the first base and a grinding portion arranged around the base portion; The grinding part includes a stainless steel structure, a ceramic structure or a wire brush structure.

19. The welding slag cleaning equipment according to claim 17, characterized in that: The thickness of the grinding wheel ranges from 1 mm to 5 mm.

20. The welding slag cleaning device according to claim 17, characterized in that: The polishing assembly also includes a second base and a second driving structure disposed on the second base. The first base is also disposed on the second base, and the second driving structure is used to drive the first base to approach or move away from the installation position.

21. The welding slag cleaning equipment according to claim 20, characterized in that: The polishing assembly further includes a third base and a third driving structure disposed on the third base. The second base is also disposed on the third base, and the third driving structure is used to drive the second base to move relative to the third base.

22. The welding slag cleaning equipment according to claim 17, characterized in that: The polishing assembly also includes a dust suction structure.

23. A battery production system, characterized in that: Comprising the welding slag cleaning equipment as described in any one of claims 1-22.

24. The battery production system according to claim 23, characterized in that: The battery production system comprises one or two of the welding slag cleaning devices.

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