Battery polishing device

Abstract

This utility model belongs to the field of battery technology and discloses a battery polishing device, including a clamping assembly and a polishing assembly. The clamping assembly is used to clamp a cylindrical battery. The polishing assembly is spaced apart on one side of the clamping assembly along the central axis of the cylindrical battery. The polishing assembly includes a rotary drive, a first drive, and at least two polishing components. All the polishing components together form a space for clamping the cylindrical battery. The first drive is used to drive the polishing components to move so as to selectively press against or space between the polishing components and the outer periphery of the welded end of the cylindrical battery. The first drive is located at the drive end of the rotary drive. The battery polishing device of this utility model clamps the cylindrical battery with the clamping assembly, and the first drive drives the polishing components to press against the outer periphery of the cylindrical battery. The rotary drive drives the polishing components to continuously rotate around the outer periphery of the cylindrical battery to achieve automatic polishing. The polishing is uniform and efficient, reducing the intensity of manual labor.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery polishing device. Background Technology

[0002] With the continuous development of the new energy vehicle industry, the market demand for lithium-ion batteries is also expanding. There are many types of lithium-ion batteries, mainly including cylindrical lithium-ion batteries, prismatic lithium-ion batteries, and irregularly shaped lithium-ion batteries.

[0003] A typical cylindrical lithium-ion battery consists of a cylindrical casing, a core housed within the cylindrical casing, and a cap sealing the opening of the cylindrical casing. To ensure a tight seal between the cap and the cylindrical casing, the cap is typically welded to the casing. However, after welding, a protruding structure protrudes from the outer circumference of the cylindrical casing at the weld seam. A cylindrical lithium-ion battery with a diameter exceeding the 3% limit after welding is considered a defective product. Therefore, the weld seam needs to be manually polished after welding to meet the production requirements of cylindrical lithium-ion batteries. Existing technology has the following drawbacks: manual polishing is inefficient; prolonged, repetitive, and inefficient manual work can easily cause fatigue for operators; and there is a risk of missed polishing, affecting the production quality of cylindrical lithium-ion batteries. Utility Model Content

[0004] The purpose of this invention is to provide a battery polishing device with a simple structure, and its polishing components can effectively improve the polishing efficiency of cylindrical batteries.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A battery polishing apparatus is provided, including a clamping assembly and a polishing assembly. The clamping assembly is used to clamp a cylindrical battery, and the welded end of the cylindrical battery is exposed in the clamping assembly. The polishing assemblies are spaced apart on one side of the clamping assembly along the central axis of the cylindrical battery. The polishing assembly includes a rotary drive, a first drive, and at least two polishing elements. All the polishing elements together form a space for clamping the cylindrical battery. The first drive is used to drive the polishing elements to move to selectively abut against or space from the outer periphery of the welded end. The first drive is disposed at the drive end of the rotary drive, and the rotation axis of the rotary drive is aligned with the central axis of the cylindrical battery.

[0007] As a preferred embodiment of the battery polishing device, the polishing assembly further includes a mounting block and an elastic element. The mounting block is disposed at the driving end of the first driving element. A limiting groove is formed on the side of the mounting block facing the clamping assembly. The length of the limiting groove extends along the radial direction of the cylindrical battery. The polishing element has a connecting portion away from the clamping assembly. The connecting portion is slidably disposed in the limiting groove. The elastic element is disposed in the limiting groove, and its two ends are respectively connected to a groove wall of the limiting groove along its own length direction and the connecting portion. The elastic element has a tendency to drive the connecting portion so that the polishing element is always pressed against the outer periphery of the welding end.

[0008] As a preferred embodiment of the battery polishing device, the limiting groove has two groove walls protruding from it along the length direction of the limiting groove, and the limiting groove has a groove opening adjacent to the clamping assembly and a groove bottom opposite to the groove opening. The limiting part is disposed adjacent to the groove opening, and the connecting part is slidably disposed between the limiting part and the groove bottom.

[0009] As a preferred embodiment of the battery polishing device, the polishing assembly further includes a mounting block, which is disposed at the driving end of the first driving member along the radial direction of the cylindrical battery. The polishing member is slidably disposed on the mounting block and can be selectively fixed.

[0010] As a preferred embodiment of the battery polishing device, the battery polishing device further includes a base and a first mounting seat. The rotary drive component is disposed on the base via the first mounting seat. The clamping assembly is disposed on the base, and the clamping assembly and the first mounting seat are spaced apart along a first direction, which is the direction of the central axis of the cylindrical battery. The first mounting seat is slidably disposed on the base along the first direction and can be selectively fixed.

[0011] As a preferred embodiment of the battery polishing device, the first mounting base includes a first support block, a second support block, and a third support block. The first support block is slidably disposed on the base along the first direction and can be selectively fixed. The second support block is slidably disposed on the first support block along the second direction and can be selectively fixed. The third support block is slidably disposed on the second support block along the third direction and can be selectively fixed. The rotary drive member is disposed on the third support block, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0012] As a preferred embodiment of the battery polishing device, the first mounting base further includes a limiting component, which includes a limiting block and a bolt;

[0013] The base is provided with the limiting component, and the limiting component is located on one side of the first support block along the first direction. The limiting block is fixedly disposed on the base, and a threaded hole is provided through the limiting block on one side along the first direction. Part of the bolt passes through the threaded hole and abuts against the first support block; and / or,

[0014] The first support block is provided with the limiting component, and the limiting component is located on one side of the second support block along the second direction. The limiting block is fixed on the first support block, and a threaded hole is provided through the limiting block on one side along the second direction. Part of the bolt passes through the threaded hole and abuts against the second support block.

[0015] As a preferred embodiment of the battery polishing device, the clamping assembly includes a second driving member and at least two clamping members. Each clamping member is provided with a clamping groove, the opening of which gradually increases from the bottom to the top. The clamping grooves together form a space for clamping a cylindrical battery, and at least some of the clamping members are movable clamping members. The second driving member is kinetically connected to the movable clamping members to selectively clamp or release the cylindrical battery.

[0016] As a preferred embodiment of the battery polishing device, the battery polishing device further includes a base and a bracket. The clamping assembly includes two clamping members, namely a fixed clamping member and a movable clamping member. The fixed clamping member and the bracket are both disposed on the base. The second driving member is disposed on the bracket. The movable clamping member is disposed on the driving end of the second driving member and is located above the fixed clamping member.

[0017] As a preferred embodiment of the battery polishing device, the battery polishing device further includes a second mounting base, which is slidably disposed on the base along a second direction and can be selectively fixed, wherein the second direction is perpendicular to the central axis direction of the cylindrical battery.

[0018] The beneficial effects of this utility model are as follows: By clamping the cylindrical battery with the clamping component, the stability of the cylindrical battery during the polishing process is ensured, avoiding displacement or damage during polishing. Combined with the first driving component of the polishing component driving the polishing component to press against the outer periphery of the welded end of the cylindrical battery, and with the drive of the rotation driving component, the polishing component can continuously rotate around the outer periphery of the cylindrical battery to achieve polishing. The polishing is uniform and efficient, reducing the intensity of manual labor, effectively ensuring the polishing efficiency and consistency of the cylindrical battery, and improving the production quality of the cylindrical battery. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the battery polishing device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the grinding component according to an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 The intention to magnify point A;

[0023] Figure 4 This is a schematic diagram of the clamping assembly according to an embodiment of the present invention.

[0024] In the picture:

[0025] 100. Cylindrical battery; 101. Welded end;

[0026] 1. Clamping assembly; 11. Second drive component; 12. Clamping component; 121. Clamping groove; 2. Grinding assembly; 21. Rotation drive component; 22. First drive component; 23. Grinding component; 231. Connecting part; 24. Mounting block; 241. Limiting groove; 25. Elastic component; 3. Base; 4. First mounting seat; 41. First support block; 42. Second support block; 43. Third support block; 44. Limiting assembly; 441. Limiting block; 5. Second mounting seat. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] like Figure 1 As shown, the battery polishing device of this utility model embodiment includes a clamping assembly 1 and a polishing assembly 2. The clamping assembly 1 is used to clamp a cylindrical battery 100, and the welding end 101 of the cylindrical battery 100 is exposed in the clamping assembly 1. The polishing assembly 2 is spaced apart on one side of the clamping assembly 1 along the central axis of the cylindrical battery 100. The polishing assembly 2 includes a rotary drive 21, a first drive 22 and at least two polishing parts 23. All the polishing parts 23 together form a space for clamping the cylindrical battery 100. The first drive 22 is used to drive the polishing parts 23 to move to selectively abut or space them against the outer periphery of the welding end 101. The first drive 22 is disposed at the drive end of the rotary drive 21. The rotation axis of the rotary drive 21 is consistent with the central axis of the cylindrical battery 100. The alignment of the rotation axis of the rotary drive 21 with the central axis of the cylindrical battery 100 ensures the accuracy and consistency of the polishing.

[0032] Understandably, by clamping the cylindrical battery 100 with the clamping component 1, the stability of the cylindrical battery 100 during the polishing process is ensured, preventing displacement or damage during polishing. Combined with the first drive component 22 of the polishing component 2 driving the polishing component 23 to press against the outer periphery of the welded end 101 of the cylindrical battery 100, and the drive of the rotation drive component 21 enabling the polishing component 23 to continuously rotate around the outer periphery of the cylindrical battery 100 for polishing, the polishing is uniform and efficient, reducing manual labor intensity and effectively ensuring the polishing efficiency and consistency of the cylindrical battery 100, thus improving the production quality of the cylindrical battery 100. Furthermore, by using multiple polishing components 23 to form a clamping space, more efficient multi-point polishing of the weld seam on the outer periphery of the cylindrical battery 100 can be achieved, improving the polishing quality of the outer periphery of the cylindrical battery 100.

[0033] In this design, two grinding components 23 are provided. The first driving component 22 can be a clamping cylinder. The two grinding components 23 are respectively disposed at the two driving ends of the clamping cylinder. The clamping cylinder drives the two grinding components 23 to move closer to each other so that the grinding components 23 abut against the weld seam on the outer periphery of the cylindrical battery 100. In other embodiments, clamping driving components with three or more driving ends can also be used.

[0034] Furthermore, such as Figure 2 and Figure 3 As shown, the grinding assembly 2 also includes a mounting block 24 and an elastic member 25. The mounting block 24 is disposed at the driving end of the first driving member 22. The mounting block 24 has a limiting groove 241 on the side facing the clamping assembly 1. The length of the limiting groove 241 extends along the radial direction of the cylindrical battery 100. The grinding member 23 has a connecting portion 231 away from the clamping assembly 1. The connecting portion 231 is slidably disposed in the limiting groove 241. The elastic member 25 is disposed in the limiting groove 241, and the two ends of the elastic member 25 are respectively connected to a groove wall of the limiting groove 241 along its own length direction and the connecting portion 231. The elastic member 25 has a tendency to drive the connecting portion 231 so that the grinding member 23 is always pressed against the outer periphery of the welding end 101. By using the elastic element 25, on the one hand, the pushing action of the elastic element 25 ensures that the grinding part 23 always abuts against the outer peripheral wall of the cylindrical battery 100, preventing incomplete grinding caused by insufficient driving of the first driving element 22 or wear of the grinding part 23 and gaps between the grinding part 23 and the outer peripheral side of the cylindrical battery 100; on the other hand, it prevents rigid collision between the grinding part 23 and the driving element of the first driving element 22 and the outer peripheral side of the cylindrical battery 100, ensuring the production quality of the cylindrical battery 100. Furthermore, the setting of the limiting groove 241 allows the connecting part 231 to slide within the limiting groove 241, effectively ensuring the smooth movement of the grinding part 23 and reducing the possibility of tilting.

[0035] Furthermore, the limiting groove 241 has limiting portions protruding from its two groove walls along the length direction perpendicular to the limiting groove 241. The limiting groove 241 has an opening adjacent to the clamping component 1 and a bottom opposite the opening. The limiting portions are located adjacent to the opening, and the connecting portion 231 is slidably disposed between the limiting portion and the bottom of the limiting groove 241. By limiting the connecting portion 231 through the limiting portions and the bottom of the limiting groove 241, the connecting portion 231 can be effectively prevented from dislodging from the opening of the limiting groove 241, ensuring the installation stability of the grinding part 23. In addition, by utilizing the two groove walls of the limiting groove 241 along the width direction, the bottom of the limiting groove 241, and the limiting portions to limit and guide the connecting portion 231, the smooth movement of the connecting portion 231 can be effectively ensured.

[0036] Of course, a guide shaft can also be set within the limit. The two ends of the guide shaft are respectively connected to the two groove walls of the limit groove 241 along its own length direction. A guide hole is provided through the connecting part 231. The guide shaft is inserted into the guide hole and the guide hole is slidably connected to the guide shaft. The elastic element 25 is a spring. The spring is sleeved on the outer periphery of the guide shaft. By setting the guide shaft, the movement guidance and stability of the connecting part 231 can be effectively improved, and the compression and extension of the spring can also be guided.

[0037] In some embodiments, the polishing assembly 2 further includes a mounting block 24, which is disposed at the driving end of the first driving member 22 along the radial direction of the cylindrical battery 100. The polishing member 23 is slidably disposed on the mounting block 24 and can be selectively fixed. By adjusting and locking the position of the polishing member 23 relative to the mounting block 24 along the radial direction of the cylindrical battery 100, the polishing member 23 can more accurately fit the outer periphery of the cylindrical battery 100, improving the polishing accuracy of the polishing member 23. Furthermore, by adjusting the spacing between the two polishing members 23, it can also adapt to the polishing of cylindrical batteries 100 of various diameters, improving the versatility of the battery polishing device.

[0038] For example, the mounting block 24 has a strip-shaped hole, the length of which extends radially along the cylindrical battery 100. The polishing part 23 has a threaded hole. After adjusting the polishing part 23 radially along the cylindrical battery 100, a bolt is screwed through the strip-shaped hole into the threaded hole to fix the polishing part 23 to the mounting block 24. Further, the battery polishing device also includes a base 3 and a first mounting seat 4. The rotation drive 21 is mounted on the base 3 via the first mounting seat 4. The clamping assembly 1 is mounted on the base 3, and the clamping assembly 1 and the first mounting seat 4 are spaced apart along a first direction (the first direction is the X direction shown in the figure). The first direction is the direction of the central axis of the cylindrical battery 100. The first mounting seat 4 is slidably mounted on the base 3 along the first direction and can be selectively fixed. By adjusting the distance between the first mounting base 4 and the clamping assembly 1 along the first direction, the distance between the grinding part 23 on the first mounting base 4 and the cylindrical battery 100 inside the clamping assembly 1 is adjusted so that the grinding part 23 can be accurately positioned at the weld seam located on the outer periphery of the cylindrical battery 100, thereby improving the grinding position accuracy of the grinding part 23.

[0039] Specifically, such as Figure 2 As shown, the first mounting base 4 includes a first support block 41, a second support block 42, and a third support block 43. The first support block 41 is slidably disposed on the base 3 along a first direction and can be selectively fixed. The second support block 42 is slidably disposed on the first support block 41 along a second direction (the second direction is the Y direction shown in the figure) and can be selectively fixed. The third support block 43 is slidably disposed on the second support block 42 along a third direction (the third direction is the Z direction shown in the figure). The rotation drive 21 is disposed on the third support block 43. The first direction, the second direction, and the third direction are perpendicular to each other.

[0040] In other words, the first support block 41 has multiple first oblong holes extending along a first direction, and the base 3 has multiple corresponding third threaded holes. After the first support block 41 is adjusted in the first direction, a first screw is passed through the first oblong hole and screwed into the third threaded hole to fix the first support block 41 to the base 3. Similarly, the second support block 42 has multiple second oblong holes extending along a second direction, and the first support block 41 has multiple corresponding fourth threaded holes. After the second support block 42 is adjusted relative to the first support block 41 in the second direction, a second bolt is passed through the second oblong hole and screwed into the fourth threaded hole to fix the second support block 42 to the first support block 41. The third support block 43 has multiple third oblong holes extending along a third direction, and the second support block 42 has multiple corresponding fifth threaded holes. After the third support block 43 is adjusted relative to the second support block 42 in the third direction, a third bolt is passed through the third oblong hole and screwed into the fifth threaded hole to fix the third support block 43 to the second support block 42. By adjusting the movement of the second support block 42 and the third support block 43, the rotation axis of the rotary drive 21 is aligned with the central axis of the cylinder, ensuring the precision of the grinding of the cylindrical battery 100 by the multiple grinding parts 23.

[0041] Optionally, the first mounting base 4 further includes a limiting component 44, which includes a limiting block 441 and bolts. The limiting component 44 is provided on the base 3 and is located on one side of the first support block 41 along the first direction. The limiting block 441 is fixedly mounted on the base 3, and a threaded hole is provided through the limiting block 441 along the first direction. Part of the bolt passes through the threaded hole and abuts against the first support block 41. When the first support block 41 is moved and adjusted, the adjusting bolt is adjusted so that the end of the screw abuts against the first support block 41 along the first direction to limit the position of the first support block 41. At this time, the first bolt is then screwed through the first oblong hole into the third threaded hole for locking and fixing. By setting the limiting component 44, the positional stability of the first support block 41 after adjustment is effectively improved, thereby effectively improving the connection accuracy between the first support block 41 and the base 3.

[0042] Preferably, a limiting component 44 is provided on the first support block 41, and the limiting component 44 is located on one side of the second support block 42 along the second direction. The limiting block 441 is fixed to the first support block 41, and a threaded hole is provided through the limiting block 441 along the second direction. Part of the bolt passes through the threaded hole and abuts against the second support block 42. After the second support block 42 is moved and adjusted, the limiting component 44 is used to make the bolt abut against the second support block 42 along the second direction before the second support block 42 is fixed. This effectively improves the positional stability of the second support block 42 after adjustment and avoids the need to readjust the position of the second support block 42 if it is accidentally bumped before it is fixed.

[0043] In other embodiments, such as Figure 4 As shown, the clamping assembly 1 includes a second driving member 11 and at least two clamping members 12. Each clamping member 12 is provided with a clamping groove 121. The opening of the clamping groove 121 gradually increases from the bottom to the top. The clamping grooves 121 together form a space for clamping the cylindrical battery 100. At least some of the clamping members 12 are movable clamping members 12. The second driving member 11 is connected to the movable clamping members 12 to drive the movable clamping members 12 to selectively clamp or release the cylindrical battery 100. The second driving member 11 drives the movable clamping members 12 to clamp the cylindrical battery 100, thereby ensuring the positional stability of the battery during the packaging process. Of course, by adjusting the driving distance of the second driving member 11, it is possible to clamp cylindrical batteries 100 of different diameters, improving the versatility of the clamping assembly 1. The cross-sectional shape of the clamping groove 121 is not limited and can be arc-shaped, U-shaped, V-shaped, etc., as long as it can enclose and form a space for clamping and fixing the cylindrical battery 100. Preferably, the bottom wall of the clamping groove 121 on each clamping block is an arc-shaped surface, and the side wall of the clamping groove 121 is smoothly connected to the bottom wall. Compared with the V-shaped clamping groove 121, the opening of the clamping groove 121 with the arc-shaped bottom is larger and easier to process.

[0044] Furthermore, the battery polishing device also includes a base 3 and a bracket. The clamping assembly 1 includes two clamping members 12, namely a fixed clamping member 12 and a movable clamping member 12. The fixed clamping member 12 and the bracket are both disposed on the base 3. The second driving member 11 is disposed on the bracket. The movable clamping member 12 is disposed at the driving end of the second driving member 11 and is located above the fixed clamping member 12. The cylindrical battery 100 is placed in the clamping groove 121 of the fixed clamping member 12, and the movable clamping member 12 is moved down by the second driving member 11 to clamp the cylindrical battery 100. The structure is simple and the operation is convenient.

[0045] Furthermore, the battery polishing device also includes a second mounting base 5, which is slidably disposed on the base 3 along a second direction and can be selectively fixed. The second direction is perpendicular to the central axis of the cylindrical battery 100. By adjusting the position of the second mounting base 5 along the second direction, the central axis of the cylindrical battery 100 on the second mounting base 5 can be aligned with the rotation axis of the rotary drive 21, ensuring the accuracy of the polishing position of the cylindrical battery 100.

[0046] Of course, in some embodiments, guide blocks may also be provided on both sides of the second mounting base 5 along the second direction. The length of the guide blocks extends along the third direction, and the movable clamping member 12 slides and cooperates with the two guide blocks on both sides of the second direction, effectively improving the guiding and moving stability of the movable clamping member under the drive of the second driving member 11.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery polishing device, characterized by, include: A clamping assembly for clamping a cylindrical battery, wherein the welded end of the cylindrical battery is exposed in the clamping assembly; A polishing assembly is provided, spaced apart on one side of the clamping assembly along the central axis of the cylindrical battery. The polishing assembly includes a rotary drive, a first drive, and at least two polishing elements. All the polishing elements together form a space for clamping the cylindrical battery. The first drive is used to drive the polishing elements to move to selectively abut against or space between the polishing elements and the outer periphery of the welding end. The first drive is located at the drive end of the rotary drive, and the rotation axis of the rotary drive is aligned with the central axis of the cylindrical battery.

2. The battery polisher of claim 1, wherein, The grinding assembly further includes a mounting block and an elastic element. The mounting block is disposed at the driving end of the first driving element. The mounting block has a limiting groove on the side facing the clamping assembly. The length of the limiting groove extends along the radial direction of the cylindrical battery. The grinding element has a connecting portion away from the clamping assembly. The connecting portion is slidably disposed in the limiting groove. The elastic element is disposed in the limiting groove, and its two ends are respectively connected to a groove wall of the limiting groove along its own length direction and the connecting portion. The elastic element has a tendency to drive the connecting portion so that the grinding element is always pressed against the outer periphery of the welding end.

3. The battery polisher of claim 2, wherein, The limiting groove has two protruding limiting portions along its two groove walls perpendicular to its length direction. The limiting groove has an opening adjacent to the clamping assembly and a groove bottom opposite to the opening. The limiting portions are located adjacent to the opening, and the connecting portion is slidably disposed between the limiting portions and the groove bottom.

4. The battery polisher of claim 1, wherein, The polishing assembly also includes a mounting block, which is disposed at the driving end of the first driving member along the radial direction of the cylindrical battery. The polishing member is slidably disposed on the mounting block and can be selectively fixed.

5. The battery polisher of any one of claims 1-4, wherein, It also includes a base and a first mounting base. The rotary drive is disposed on the base via the first mounting base. The clamping assembly is disposed on the base and the clamping assembly and the first mounting base are spaced apart along a first direction, which is the direction of the central axis of the cylindrical battery. The first mounting base is slidably disposed on the base along the first direction and can be selectively fixed.

6. The battery polisher of claim 5, wherein, The first mounting base includes a first support block, a second support block, and a third support block. The first support block is slidably disposed on the base along the first direction and can be selectively fixed. The second support block is slidably disposed on the first support block along the second direction and can be selectively fixed. The third support block is slidably disposed on the second support block along the third direction and can be selectively fixed. The rotation drive member is disposed on the third support block. The first direction, the second direction, and the third direction are perpendicular to each other.

7. The battery polisher of claim 6, wherein, The first mounting base further includes a limiting component, which includes a limiting block and a bolt; The base is provided with the limiting component, and the limiting component is located on one side of the first support block along the first direction. The limiting block is fixedly disposed on the base, and a threaded hole is provided through the limiting block on one side along the first direction. Part of the bolt passes through the threaded hole and abuts against the first support block; and / or, The first support block is provided with the limiting component, and the limiting component is located on one side of the second support block along the second direction. The limiting block is fixed on the first support block, and a threaded hole is provided through the limiting block on one side along the second direction. Part of the bolt passes through the threaded hole and abuts against the second support block.

8. The battery polisher of any one of claims 1-4, wherein, The clamping assembly includes a second driving member and at least two clamping members. Each clamping member is provided with a clamping groove. The opening of the clamping groove gradually increases from the bottom of the groove to the opening. The clamping grooves together form a space for clamping the cylindrical battery. At least some of the clamping members are movable clamping members. The second driving member is tractively connected to the movable clamping members to selectively clamp or release the cylindrical battery.

9. The battery polishing apparatus according to claim 8, characterized in that, It also includes a base and a bracket. The clamping assembly includes two clamping members, namely a fixed clamping member and a movable clamping member. The fixed clamping member and the bracket are both disposed on the base. The second driving member is disposed on the bracket. The movable clamping member is disposed on the driving end of the second driving member and is located above the fixed clamping member.

10. The battery polisher of claim 9, wherein, It also includes a second mounting base, which is slidably disposed on the base along a second direction and can be selectively fixed, the second direction being perpendicular to the central axis of the cylindrical battery.

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