Clamping device and milling equipment

Abstract

The utility model provides a clamping device and milling equipment, the clamping device is used for clamping a battery monomer, the battery monomer comprises a shell and an electrode terminal, the electrode terminal is arranged at the end part of the shell along a first direction, the clamping device comprises a first clamping assembly and a second clamping assembly, the second clamping assembly and the first clamping assembly are oppositely arranged along the first direction, and the first clamping assembly and the second clamping assembly are oppositely arranged along the second direction. The first clamping assembly and the second clamping assembly are used for clamping the two sides of the shell in the first direction, and the second clamping assembly is configured to enable the electrode terminal to be exposed to the side, back to the first clamping assembly, of the second clamping assembly. According to the clamping device provided by the invention, a good positioning effect can be provided for the battery monomer, and the milling process of the electrode terminal can be smoothly carried out.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a clamping assembly and a milling device. Background Art

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] A battery includes multiple battery cells. When one battery cell of the battery is damaged, the other battery cells may be reused. In order to facilitate the reuse of the battery cells, the electrode terminals of the battery cells need to be milled. During the milling of the electrode terminals, the battery cells need to be clamped. However, in the related art, the clamping force of the related clamping device is insufficient during the clamping of the battery cells, and the positioning is difficult. Utility Model Content

[0004] The present application provides a clamping device and a milling device, so as to improve the clamping force on the battery cell during the milling process of the battery cell, so as to facilitate the stable positioning of the battery cell.

[0005] This application is achieved through the following technical solutions:

[0006] In the first aspect, the clamping device provided in the embodiment of the present application is used to clamp a battery cell, the battery cell includes a shell and an electrode terminal, the electrode terminal is arranged at the end of the shell along a first direction, the clamping device includes a first clamping component and a second clamping component, the second clamping component is arranged opposite to the first clamping component along the first direction, the first clamping component and the second clamping component are used to clamp the two sides of the shell along the first direction, and the second clamping component is configured to enable the electrode terminal to be exposed to the side of the second clamping component facing away from the first clamping component.

[0007] The clamping device provided in the embodiment of the present application only clamps the two sides of the shell of the battery cell along the first direction through the first clamping assembly and the second clamping assembly. Since the walls of the shell on both sides along the first direction are relatively flat, in the process of milling the electrode terminal at the end of the battery cell along the first direction, it is helpful to improve the clamping force of the clamping device on the shell and provide the battery cell with friction along the direction intersecting with the first direction, without having to clamp the wall of the shell parallel to the first direction. In this way, the clamping device can limit the freedom of the battery cell in multiple directions, has a good positioning effect on the battery cell, and facilitates the smooth milling process of the electrode terminal.

[0008] According to some embodiments of the present application, the second clamping assembly has an avoidance hole that is arranged to penetrate along the first direction, and the avoidance hole is used to penetrate the electrode terminal.

[0009] In the above scheme, the second clamping assembly is provided with an avoidance hole penetrating along the first direction, so that the electrode terminal can be avoided through the avoidance hole, the battery cell can be clamped conveniently, and the clamping force of the clamping device on the battery cell can be balanced.

[0010] According to some embodiments of the present application, the clamping device further includes a driving member, which is connected to the first clamping assembly and is used to drive the first clamping assembly to move along the first direction.

[0011] In the above scheme, by providing a driving member, it is convenient to adjust the displacement of the first clamping assembly and the second clamping assembly along the first direction, so as to facilitate operations such as clamping the battery cell, which is beneficial to improving the convenience of the clamping device in clamping the battery cell, and is beneficial to improving the adaptability of the clamping device to battery cells of different specifications or sizes.

[0012] According to some embodiments of the present application, the first clamping assembly includes a first flexible clamping member, and the first flexible clamping member is arranged toward the second clamping assembly.

[0013] In the above scheme, the first flexible clamping member is provided, which is beneficial to improve the friction force generated by the first clamping assembly on the housing along the direction intersecting with the first direction, further beneficial to improve the stability of the clamping device in positioning the battery cell, and beneficial to reduce the damage of the clamping device to the battery cell.

[0014] According to some embodiments of the present application, the first flexible clamping member includes a sponge member.

[0015] In the above scheme, the sponge member has a certain flexibility and can adapt to the surface deformation of the shell by deformation after being squeezed with the shell, which is beneficial to increasing the friction force of the first flexible clamping member on the shell along the direction intersecting with the first direction. The sponge member is lighter and less expensive, which is beneficial to reducing the weight and production cost of the clamping device.

[0016] According to some embodiments of the present application, the second clamping assembly includes a second flexible clamping member, and the second flexible clamping member is arranged toward the first clamping assembly.

[0017] In the above scheme, the second flexible clamping member is provided to increase the friction force generated by the second clamping assembly on the housing along the direction intersecting with the first direction, further to improve the stability of the clamping device in positioning the battery cell, and to reduce the damage of the clamping device to the battery cell.

[0018] According to some embodiments of the present application, the second flexible clamping member includes a resin member.

[0019] In the above solution, the second flexible clamping member includes a resin member, which is conducive to improving the friction force of the second flexible clamping member on the housing along the intersection with the first direction, and further conducive to improving the stability of the clamping device in positioning the battery cell.

[0020] According to some embodiments of the present application, the second clamping component has an avoidance hole for inserting the electrode terminal. The second flexible clamping member has a first mating surface facing the first clamping component, the first mating surface is used to fit with the housing, and the first mating surface is arranged around the avoidance hole.

[0021] In the above scheme, the first mating surface is arranged around the avoidance hole. When the clamping device clamps the battery cell, it is beneficial to improve the balance of the friction force of the second clamping component on the shell in all directions perpendicular to the first direction, and further helps to improve the stability of the positioning of the battery cell by the clamping device, and further facilitates the smooth milling of the electrode terminal.

[0022] According to some embodiments of the present application, the first direction is the direction of gravity, and the second clamping assembly is disposed below the first clamping assembly along the direction of gravity.

[0023] In the above scheme, a second clamping assembly is arranged below the first clamping assembly along the direction of gravity. The debris generated during the milling of the electrode terminal falls downward under the action of gravity, thereby reducing the risk of the debris generated during the milling of the electrode terminal adhering to the outer shell of the battery cell, thereby reducing the risk of abnormal insulation on the surface of the battery cell, and improving the reliability of the battery cell after reuse.

[0024] In the second aspect, the milling equipment provided in the embodiment of the present application is used for milling the electrode terminals of the battery cells. The milling equipment includes a support frame, a clamping device provided in any of the above embodiments, and a milling device. The clamping device is arranged on the support frame, and the milling device is arranged on the side of the second clamping component facing away from the first clamping component, and is used for milling the electrode terminals.

[0025] The milling equipment provided in the embodiment of the present application has the same technical effect as the clamping device provided in any of the above embodiments, and will not be described in detail here.

[0026] According to some embodiments of the present application, the support frame has a workbench, the workbench has a mounting groove, and the second clamping assembly is arranged in the mounting groove.

[0027] In the above solution, the second clamping assembly can be provided with a certain limiting effect by the mounting groove, which is beneficial to improving the structural stability of the second clamping assembly, and further beneficial to improving the clamping stability of the battery cell by the clamping device.

[0028] According to some embodiments of the present application, the second clamping assembly has an avoidance hole, and the avoidance hole is used to pass the electrode terminal. The second clamping assembly has a first mating surface and a second mating surface, the first mating surface is used to fit with the housing, and the first mating surface is arranged around the avoidance hole. The second mating surface fits with the workbench and is arranged around the avoidance hole.

[0029] In the above scheme, it is helpful to isolate the debris generated by the electrode terminal during milling from the side of the shell, so as to reduce the risk of the debris adhering to the shell and causing the insulation failure of the battery cell surface, which is helpful to improve the reliability of the battery cell during recycling.

[0030] According to some embodiments of the present application, the support frame has a closed cavity, the milling device is accommodated in the closed cavity, and the second clamping assembly is configured to expose the electrode terminal to a side of the second clamping assembly facing the closed cavity.

[0031] In the above scheme, the milling device can perform milling operations on the electrode terminal in the closed cavity, and the generated debris splashes and is blocked by the inner wall of the closed cavity, which is beneficial to reducing the risk of debris splashing generated by milling and improving the cleanliness of the milling process.

[0032] According to some embodiments of the present application, the milling device further includes a blowing device, a collecting pipe and a collecting container. The blowing device is arranged in the closed cavity, the collecting pipe is opposite to the blowing device, and the blowing device is used to blow the debris milled by the milling device to the collecting pipe. The collecting container is arranged outside the closed cavity, the collecting container is connected to the collecting pipe, and is used to collect the debris.

[0033] In the above scheme, the milling equipment includes a blowing device, a collecting pipe and a collecting container, which is convenient for collecting the debris milled by the milling device, further reducing the risk of debris remaining on the surface of the electrode terminal, which is beneficial to improving the reliability of the battery cell during recycling.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the structure of a milling device provided in an embodiment of the present application;

[0037] Figure 2 A front view of a second clamping assembly in a clamping device provided in an embodiment of the present application;

[0038] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along AA;

[0039] Figure 4 A schematic structural diagram of a workbench of a support frame in a milling device provided in an embodiment of the present application.

[0040] In the drawings, the figures are not necessarily drawn to scale.

[0041] Description of reference numerals:

[0042] 1- Milling equipment;

[0043] 10-clamping device; 11-first clamping assembly; 111-first flexible clamping member; 12-second clamping assembly; 12a-avoidance hole; 12b-first mating surface; 12c-second mating surface; 121-second flexible clamping member; 13-driving member;

[0044] 20-support frame; 20a-enclosed cavity; 21-workbench; 21a-installation slot;

[0045] 30- milling device;

[0046] 40- blowing device;

[0047] 50-collection pipe;

[0048] 60-collection container;

[0049] 2-battery cell; 2a-housing; 2b-electrode terminal;

[0050] X - first direction. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application 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 drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0053] Reference to "embodiments" in this application 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 in this application may be combined with other embodiments.

[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can 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 application generally indicates that the associated objects before and after are in an "or" relationship.

[0056] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0057] For recycled battery cells or second-hand battery cells, since they have undergone varying degrees of surface deformation during the cyclic operation, problems such as positioning or clamping difficulties may occur during milling. The clamping force of the clamping device on the battery cell is insufficient, which is not conducive to the normal milling of the electrode terminal.

[0058] To this end, the inventor conducted a series of experiments and studies, and found that as the battery cell is continuously cycled, the wall on the side of the outer shell of the recycled battery cell where the electrode terminal is provided and the wall opposite thereto expand to the minimum and are the most flat. For this reason, the present application improves the clamping device and the milling device to improve the stability of the clamping device in positioning the battery cell, so as to facilitate the smooth milling of the battery cell.

[0059] First, as Figure 1 As shown, the clamping device 10 provided in the embodiment of the present application is used to clamp a battery cell 2, the battery cell 2 includes a shell 2a and an electrode terminal 2b, the electrode terminal 2b is arranged at the end of the shell 2a along the first direction X, the clamping assembly includes a first clamping assembly 11 and a second clamping assembly 12, the second clamping assembly 12 is arranged opposite to the first clamping assembly 11 along the first direction X, the first clamping assembly 11 and the second clamping assembly 12 are used to clamp the two sides of the shell 2a along the first direction X, and the second clamping assembly 12 is configured to enable the electrode terminal 2b to be exposed to the side of the second clamping assembly 12 facing away from the first clamping assembly 11.

[0060] The electrode terminal 2b is arranged at the end of the shell 2a along the first direction X, and the first clamping assembly 11 and the second clamping assembly 12 are arranged opposite to each other along the first direction X, so that the first clamping assembly 11 and the second clamping assembly 12 clamp the two sides of the shell 2a along the first direction X together.

[0061] After the battery cell 2 has undergone multiple cycles of charge and discharge, the deformation of the wall portion of the shell 2a on the side where the electrode terminal 2b is provided and the wall portion opposite thereto is small, that is, the deformation of the wall portions on the two sides opposite to each other along the first direction X of the shell 2a is small. Therefore, the wall portions on the two sides opposite to each other along the first direction X of the shell 2a are relatively flat. The first clamping assembly 11 and the second clamping assembly 12 are respectively arranged on the two sides of the shell 2a along the first direction X to provide the shell 2a with a clamping force only along the first direction X, and a friction force intersecting with the first direction X is generated under the action of the clamping force. In this way, when the battery cell 2 is clamped by the clamping device 10, the freedom of the battery cell 2 along the first direction X and other directions intersecting with the first direction X is restricted, without the need to clamp the wall portion of the shell 2a parallel to the first direction X.

[0062] The second clamping assembly 12 is configured to expose the electrode terminal 2b to the side of the second clamping assembly 12 facing away from the first clamping assembly 11. Optionally, the electrode terminal 2b may be inserted into the second clamping assembly 12 and arranged beyond the second clamping assembly 12 along the first direction X, or a through hole may be provided in the second clamping assembly 12 that passes through along the first direction X, and the electrode terminal 2b is located in the through hole. The above methods can achieve the purpose of exposing the electrode terminal 2b to the side of the second clamping assembly 12 facing away from the first clamping assembly 11, so as to facilitate the milling operation of the electrode terminal 2b from the side of the second clamping assembly 12 facing away from the first clamping assembly 11.

[0063] It is understandable that the battery cell 2 may be a cylindrical battery cell, or the battery cell 2 may be a square battery cell.

[0064] The electrode terminal 2b may be provided only at one end of the outer shell 2a along the first direction X, or the electrode terminal 2b may be provided at both ends of the outer shell 2a along the first direction X. In the case where the electrode terminal 2b is provided at both ends of the outer shell 2a along the first direction X, after the electrode terminal 2b at one end of the outer shell 2a is milled, the battery cell 2 may be reversed along the first direction X to mill the electrode terminal 2b at the other end of the outer shell 2a.

[0065] Optionally, in the case where electrode terminals 2b are provided at both ends of the housing 2a along the first direction X, relevant through holes may be provided on the first clamping assembly 11 to avoid the electrode terminals 2b.

[0066] Optionally, the first clamping component 11 and the second clamping component 12 respectively have a plate-shaped structure, so that the first clamping component 11 and the second clamping component 12 are respectively in surface contact with the two sides of the shell 2a along the first direction X, so as to increase the friction force of the first clamping component 11 and the second clamping component 12 on the two sides of the shell 2a along the first direction X.

[0067] The clamping device 10 provided in the present application only clamps the outer shell 2a of the battery cell 2 along the first direction X on both sides through the first clamping assembly 11 and the second clamping assembly 12. Since the walls of the outer shell 2a on both sides along the first direction X are relatively flat, in the process of milling the electrode terminal 2b at the end of the battery cell 2 along the first direction X, it is beneficial to improve the clamping force of the clamping device 10 on the outer shell 2a and provide the battery cell 2 with friction in the direction intersecting with the first direction X, without having to clamp the wall of the outer shell 2a parallel to the first direction X. In this way, the clamping device 10 can limit the freedom of the battery cell 2 in multiple directions, has a good positioning effect on the battery cell 2, and facilitates the smooth milling process of the electrode terminal 2b.

[0068] Optionally, the second clamping assembly 12 may be on the side of the housing 2a facing the electrode terminal 2b, the second clamping assembly 12 may be disposed on the side of the electrode terminal 2b, or the second clamping assembly 12 may be disposed around the electrode terminal 2b.

[0069] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the second clamping assembly 12 has an escape hole 12 a penetratingly arranged along the first direction X, and the escape hole 12 a is used for passing the electrode terminal 2 b.

[0070] The avoidance hole 12a can be arranged through the second clamping assembly 12 along the first direction X, so that the electrode terminal 2b can pass through the avoidance hole 12a. According to the number of electrode terminals 2b at the end of the battery cell 2 along the first direction X that cooperates with the clamping device 10, the second clamping assembly 12 can be arranged to have one or two avoidance holes 12a arranged at intervals.

[0071] Optionally, the end surface of the electrode terminal 2b facing away from the housing 2a may be located in the avoidance hole 12a, or the end surface of the electrode terminal 2b facing away from the housing 2a may be arranged beyond the second clamping assembly 12 along the first direction X. In other words, the size of the avoidance hole 12a along the first direction X may be set to be larger or smaller than the size of the electrode terminal 2b along the first direction X.

[0072] In this way, the second clamping assembly 12 is disposed around the electrode terminal 2b, and the clamping assembly has a clamping force on the shell 2a along the circumference of the electrode assembly, which is beneficial to improving the balance of the clamping force of the clamping device 10 on the shell 2a.

[0073] Therefore, by providing the second clamping assembly 12 with an avoidance hole 12a extending through the first direction X, the electrode terminal 2b can be avoided through the avoidance hole 12a, thereby facilitating clamping of the battery cell 2 and improving the balance of the clamping force of the clamping device 10 on the battery cell 2.

[0074] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the second clamping component 12 has a first mating surface 12b facing the first clamping component 11, and the first mating surface 12b is used to fit with the housing 2a. The first mating surface 12b is arranged around a circle of the avoidance hole 12a.

[0075] The first mating surface 12b is used to fit with the outer shell 2a, and the first mating surface 12b is arranged around the avoidance hole 12a. When the clamping device 10 clamps the battery cell 2, the first mating surface 12b is mated with the outer shell 2a along the peripheral side of the electrode terminal 2b, and the area of ​​the outer shell 2a located on the peripheral side of the electrode terminal 2b can be subjected to the friction force of the second clamping component 12.

[0076] Therefore, the first mating surface 12b is arranged around the avoidance hole 12a. When the clamping device 10 clamps the battery cell 2, it is beneficial to improve the balance of the friction force of the second clamping component 12 on the outer shell 2a in all directions perpendicular to the first direction X, and further helps to improve the stability of the positioning of the battery cell 2 by the clamping device 10, and further facilitates the smooth milling of the electrode terminal 2b.

[0077] In some embodiments, Figure 1 As shown, the clamping device 10 further includes a driving member 13, which is connected to the first clamping assembly 11 and is used to drive the first clamping assembly 11 to move along the first direction X.

[0078] It is understandable that in the process of clamping or disassembling the battery cell 2, or in order to adapt to battery cells 2 of different sizes, it is necessary to adjust the displacement of the first clamping assembly 11 and the second clamping assembly 12 along the first direction X. Therefore, a driving member 13 is provided to be connected to the first clamping assembly 11 so that the first clamping assembly 11 can move toward or away from the second clamping assembly 12 along the first direction X to adjust the distance between the first clamping assembly 11 and the second clamping assembly 12 along the first direction X.

[0079] Optionally, the driving member 13 may be a motor, a hydraulic cylinder or a pneumatic cylinder.

[0080] By providing the driving member 13, it is convenient to adjust the displacement of the first clamping assembly 11 and the second clamping assembly 12 along the first direction X, so as to facilitate operations such as clamping the battery cell 2, which is beneficial to improving the convenience of the clamping device 10 in clamping the battery cell 2, and is beneficial to improving the adaptability of the clamping device 10 to battery cells 2 of different specifications or sizes.

[0081] In some embodiments, the first direction X is the direction of gravity, and the second clamping assembly 12 is disposed below the first clamping assembly 11 along the direction of gravity.

[0082] The second clamping assembly 12 is arranged below the first clamping assembly 11 along the direction of gravity. Since the electrode terminal 2b of the battery cell 2 is exposed to the side of the second clamping assembly 12 facing away from the first clamping assembly 11, when the clamping device 10 clamps the battery cell 2, the electrode terminal 2b is arranged downward along the direction of gravity. In the process of milling the electrode terminal 2b by the side of the second clamping assembly 12 facing away from the first clamping assembly 11, the generated debris falls downward under the action of gravity.

[0083] Therefore, the second clamping assembly 12 is arranged below the first clamping assembly 11 along the direction of gravity, and the debris generated during the milling of the electrode terminal 2b falls downward under the action of gravity, thereby reducing the risk of the debris generated during the milling of the electrode terminal 2b adhering to the outer shell 2a of the battery cell 2, thereby helping to reduce the risk of abnormal insulation on the surface of the battery cell 2, and helping to improve the reliability of the battery cell 2 after reuse.

[0084] In some embodiments, Figure 1 As shown, the first clamping assembly 11 includes a first flexible clamping member 111 , and the first flexible clamping member 111 is disposed toward the second clamping assembly 12 .

[0085] Optionally, the entire first clamping component 11 may be configured as the first flexible clamping member 111 , or a portion of the first clamping component 11 facing the second clamping component 12 may be configured as the first flexible clamping member 111 .

[0086] The first flexible clamping member 111 is arranged toward the second clamping assembly 12. In the process of clamping the battery cell 2, the first flexible clamping member 111 abuts against the outer shell 2a of the battery cell 2. The first flexible clamping member 111 can deform to adapt to the uneven surface of the outer shell 2a abutting against it, which is beneficial to increase the fitting area between the first clamping assembly 11 and the outer shell 2a. Moreover, the first flexible clamping member 111 contacts the outer shell 2a, which is beneficial to reduce the damage of the clamping device 10 to the outer shell 2a.

[0087] Therefore, providing the first flexible clamping member 111 is beneficial to improving the friction force generated by the first clamping assembly 11 on the housing 2a along the direction intersecting with the first direction X, further helping to improve the stability of the clamping device 10 in positioning the battery cell 2, and helping to reduce damage to the battery cell 2 caused by the clamping device 10.

[0088] The first flexible clamping member 111 can be made of any material that can produce a certain elastic deformation, and the material can be selected according to actual needs.

[0089] In some embodiments, the first flexible clamping member 111 includes a sponge member.

[0090] The sponge piece has a certain flexibility and can adapt to the surface deformation of the shell 2a by deformation after being squeezed with the shell 2a, which is beneficial to increasing the friction force of the first flexible clamping piece 111 on the shell 2a along the direction intersecting with the first direction X. The sponge piece is light and low in price, which is beneficial to reducing the weight and production cost of the clamping device 10.

[0091] In some embodiments, Figure 2 As shown, the second clamping assembly 12 includes a second flexible clamping member 121 , and the second flexible clamping member 121 is disposed toward the first clamping assembly 11 .

[0092] The second flexible clamping member 121 is arranged toward the first clamping assembly 11. In the process of clamping the battery cell 2, the second flexible clamping member 121 abuts against the outer shell 2a of the battery cell 2. The second flexible clamping member 121 can deform to adapt to the uneven surface of the outer shell 2a abutting against it, which is beneficial to increase the fitting area between the second clamping assembly 12 and the outer shell 2a. The second flexible clamping member 121 contacts the outer shell 2a, which is beneficial to reduce the damage of the clamping device 10 to the outer shell 2a.

[0093] Therefore, providing the second flexible clamping member 121 is beneficial to improving the friction force generated by the second clamping assembly 12 on the housing 2a along the direction intersecting with the first direction X, further beneficial to improving the stability of the clamping device 10 in positioning the battery cell 2, and beneficial to reducing the damage of the clamping device 10 to the battery cell 2.

[0094] The second flexible clamping member 121 can be made of any material that can produce a certain degree of deformation, and can be selected according to specific needs.

[0095] In some embodiments, the second flexible clamp 121 includes a resin.

[0096] The resin part has a certain elasticity. When a clamping force is applied to the shell 2a, less damage is caused to the shell 2a. The contact area between the second flexible part and the shell 2a can be increased by deformation, which is beneficial to increase the friction force generated by the second flexible clamping part 121 on the shell 2a along the first direction X.

[0097] Therefore, the second flexible clamping member 121 includes a resin member, which is beneficial to improving the friction force of the second flexible clamping member 121 on the housing 2a along the first direction X, and further beneficial to improving the stability of the clamping device 10 in positioning the battery cell 2.

[0098] Second, as Figure 1As shown, the milling device 1 provided in the embodiment of the present application is used for milling the electrode terminal 2b of the battery cell 2. The milling device 1 includes a support frame 20, a clamping device 10 provided in any of the above embodiments, and a milling device 30. The clamping device 10 is arranged on the support frame 20, and the milling device 30 is arranged on the side of the second clamping component 12 facing away from the first clamping component 11, and is used for milling the electrode terminal 2b.

[0099] The milling device 30 may include structures such as a milling cutter. After the clamping device 10 clamps the battery cell 2, the electrode terminal 2b is exposed to the side of the second clamping component 12 facing the milling device 30. The clamping device 10 can provide a relatively stable positioning effect for the battery cell 2, facilitating the smooth milling process of the electrode terminal 2b by the milling device 30.

[0100] The milling equipment 1 provided in the embodiment of the present application has the same technical effect as that provided in any of the above-mentioned embodiments because it adopts the clamping device 10 provided in any of the above-mentioned embodiments, and thus will not be described in detail here.

[0101] In some embodiments, Figure 1 and Figure 4 As shown, the support frame 20 has a workbench 21, the workbench 21 has a mounting groove 21a, and the second clamping assembly 12 is disposed in the mounting groove 21a.

[0102] Optionally, the second clamping assembly 12 can be installed in the mounting groove 21a by means of a snap connection or a threaded connection, and the mounting groove 21a can provide a certain limiting effect on the second clamping assembly 12, which is beneficial to improve the structural stability of the second clamping assembly 12, and further help improve the clamping stability of the clamping device 10 on the battery cell 2.

[0103] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the second clamping assembly 12 has an avoidance hole 12a, and the avoidance hole 12a is used to pass the electrode terminal 2b. The second clamping assembly 12 has a first mating surface 12b and a second mating surface 12c. The first mating surface 12b is used to fit with the housing 2a, and the first mating surface 12b is arranged around the avoidance hole 12a. The second mating surface 12c fits with the workbench 21 and is arranged around the avoidance hole 12a.

[0104] The first mating surface 12b and the second mating surface 12c are both arranged around the avoidance hole 12a. When the clamping device 10 clamps the battery cell 2, the mating interface between the battery cell 2 and the second clamping assembly 12 and the mating interface between the second clamping assembly 12 and the workbench 21 are both arranged around the electrode terminal 2b. In this way, during the milling of the electrode terminal 2b, it is difficult for the generated debris to pass through the mating interfaces between the second clamping assembly 12 and the workbench 21 and the battery cell 2 respectively. In this way, the workbench 21 and the second clamping assembly 12 together isolate the end face of the electrode terminal 2b from the outer shell 2a to reduce the risk of the debris generated during the milling process adhering to the side wall of the outer shell 2a.

[0105] Therefore, such a configuration is conducive to isolating the debris generated during the milling process of the electrode terminal 2b from the side of the shell 2a, so as to reduce the risk of the debris adhering to the shell 2a and causing the surface insulation failure of the battery cell 2, which is conducive to improving the reliability of the battery cell 2 during the reuse process.

[0106] In some embodiments, Figure 1 As shown, the support frame 20 has a closed cavity 20a, the milling device 30 is accommodated in the closed cavity 20a, and the second clamping assembly 12 is configured to expose the electrode terminal 2b to the side of the second clamping assembly 12 facing the closed cavity 20a.

[0107] The closed cavity 20a is not necessarily airtight, and may have an opening or other related structures. The milling device 30 is accommodated in the closed cavity 20a, and when the second clamping assembly 12 clamps the battery cell 2, the electrode terminal 2b is exposed on the side of the second clamping assembly 12 facing the closed cavity 20a.

[0108] With such arrangement, the milling device 30 can perform milling operation on the electrode terminal 2b in the closed cavity 20a, and the generated debris splashes and is blocked by the inner wall of the closed cavity 20a, which is beneficial to reducing the risk of debris splashing generated by milling and improving the cleanliness of the milling process.

[0109] In some embodiments, Figure 1 As shown, the milling device 1 further includes a blowing device 40, a collecting pipe 50 and a collecting container 60. The blowing device 40 is arranged in the closed cavity 20a, and the collecting pipe 50 is opposite to the blowing device 40. The blowing device 40 is used to blow the debris milled by the milling device 30 to the collecting pipe 50. The collecting container 60 is arranged outside the closed cavity 20a, and the collecting container 60 is connected to the collecting pipe 50 and is used to collect the debris.

[0110] The air blowing device 40 may be a fan or the like, and the air blowing device 40 may be connected to the outside of the closed cavity 20a through a pipe in the closed cavity 20a to guide the air flow from the outside of the closed cavity 20a to the surface of the electrode terminal 2b. The air blowing device 40 may face the position where the milling cutter of the milling device 30 contacts the electrode terminal 2b, and the milling device 30 is located between the air blowing device 40 and the inlet of the collecting pipe 50, so that the debris milled by the milling device 30 can be blown into the collecting pipe 50 by the air blowing device 40 in time.

[0111] In this way, most of the debris generated by the milling device 30 will be blown into the collection pipe 50 by the blowing device 40 and guided to the collection container 60 through the collection pipe 50 . Finally, the debris will be collected by the collection container 60 .

[0112] Therefore, the milling equipment 1 includes a blowing device 40, a collecting pipe 50 and a collecting container 60, which is convenient for collecting the debris milled by the milling device 30, further reducing the risk of debris remaining on the surface of the electrode terminal 2b, which is beneficial to improving the reliability of the battery cell 2 during the reuse process.

[0113] In some embodiments, Figures 1 to 4As shown, the milling device 1 provided in the embodiment of the present application includes a support frame 20, a clamping device 10, a milling device 30, a blowing device 40, a collecting pipe 50 and a collecting container 60. The support frame 20 has a workbench 21 and a closed cavity 20a. The milling device 30 and the blowing device 40 are accommodated in the closed cavity 20a. The collecting pipe 50 is opposite to the blowing device 40 and is used to blow the debris milled by the milling device 30 to the collecting pipe 50. The collecting container 60 is arranged outside the closed cavity 20a, and the collecting container 60 is connected to the collecting pipe 50. The clamping device 10 includes a driving member 13, a first clamping assembly 11 and a second clamping assembly 12. The first clamping assembly 11 and the second clamping assembly 12 are arranged opposite to each other along the first direction X, and are used to clamp the housing 2a of the battery cell 2 on both sides along the first direction X. The second clamping assembly 12 is configured to enable the electrode terminal 2b to be exposed to the side of the second clamping assembly 12 facing away from the first clamping assembly 11 and toward the closed cavity 20a. The second clamping assembly 12 is arranged in the mounting groove 21a of the workbench 21. The driving member 13 is connected to the first clamping assembly 11 and is used to drive the first clamping assembly 11 to move along the first direction X. The first clamping assembly 11 includes a first flexible clamping member 111, which is arranged toward the second clamping assembly 12, and the first flexible clamping member 111 includes a sponge member. The second clamping assembly 12 includes a second flexible clamping member 121, which is arranged toward the first clamping assembly 11, and the second flexible clamping member 121 includes a resin member. The second clamping assembly 12 has an avoidance hole 12a, and the avoidance hole 12a is used to penetrate the electrode terminal 2b. The second flexible clamping member 121 has a first mating surface 12b facing the first clamping assembly 11, and the first mating surface 12b is used to fit with the housing 2a, and the first mating surface 12b is arranged around the avoidance hole 12a. The second clamping assembly 12 is arranged below the first clamping assembly 11 along the gravity direction.

[0114] The milling device 1 provided in the present application only clamps the outer shell 2a of the battery cell 2 along the first direction X on both sides through the first clamping assembly 11 and the second clamping assembly 12. Since the walls of the outer shell 2a on both sides along the first direction X are relatively flat, in the process of milling the electrode terminal 2b at the end of the battery cell 2 along the first direction X, it is beneficial to improve the clamping force of the clamping device 10 on the outer shell 2a and provide the battery cell 2 with friction in the direction intersecting with the first direction X, without having to clamp the wall of the outer shell 2a parallel to the first direction X. In this way, the clamping device 10 can limit the freedom of the battery cell 2 in multiple directions, has a good positioning effect on the battery cell 2, and facilitates the smooth milling process of the electrode terminal 2b.

[0115] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A clamping device, characterized in that: Used to clamp a battery cell, the battery cell includes a shell and an electrode terminal, the electrode terminal is arranged at the end of the shell along a first direction, the clamping device includes: a first clamping assembly; A second clamping assembly is arranged opposite to the first clamping assembly along the first direction, the first clamping assembly and the second clamping assembly are used to clamp the two sides of the shell along the first direction, and the second clamping assembly is configured to expose the electrode terminal to the side of the second clamping assembly facing away from the first clamping assembly.

2. The clamping device according to claim 1, characterized in that: The second clamping assembly has an escape hole extending through the first direction, and the escape hole is used for passing the electrode terminal.

3. The clamping device according to claim 2, characterized in that: The second clamping component has a first mating surface facing the first clamping component, the first mating surface is used to fit with the shell, and the first mating surface is arranged around the avoidance hole.

4. The clamping device according to claim 1, characterized in that: The clamping device also includes a driving member, which is connected to the first clamping assembly and is used to drive the first clamping assembly to move along the first direction.

5. The clamping device according to claim 1, characterized in that: The first direction is the direction of gravity, and the second clamping assembly is arranged below the first clamping assembly along the direction of gravity.

6. The clamping device according to any one of claims 1 to 5, characterized in that: The first clamping assembly includes a first flexible clamping member, and the first flexible clamping member is disposed toward the second clamping assembly.

7. The clamping device according to claim 6, characterized in that: The first flexible clamping member includes a sponge member.

8. The clamping device according to any one of claims 1 to 5, characterized in that: The second clamping assembly includes a second flexible clamping member, and the second flexible clamping member is disposed toward the first clamping assembly.

9. The clamping device according to claim 8, characterized in that: The second flexible clamping member includes a resin member.

10. A milling device, characterized in that: Used for milling the electrode terminal of a battery cell, the milling equipment comprises: Support frame; The clamping device according to any one of claims 1 to 9, wherein the clamping device is arranged on the support frame; A milling device is arranged on a side of the second clamping assembly facing away from the first clamping assembly and is used for milling the electrode terminal.

11. The milling device according to claim 10, characterized in that The support frame has a workbench, the workbench has a mounting groove, and the second clamping assembly is arranged in the mounting groove.

12. The milling device according to claim 11, characterized in that The second clamping assembly has an avoidance hole, and the avoidance hole is used to penetrate the electrode terminal; The second clamping assembly has a first mating surface and a second mating surface, the first mating surface is used to fit with the housing, and the first mating surface is arranged around the avoidance hole; The second matching surface is in contact with the workbench and is arranged around the avoidance hole.

13. The milling device according to any one of claims 10 to 12, characterized in that The support frame has a closed cavity, the milling device is accommodated in the closed cavity, and the second clamping assembly is configured to enable the electrode terminal to be exposed to a side of the second clamping assembly facing the closed cavity.

14. The milling device according to claim 13, characterized in that The milling equipment also includes: An air blowing device is arranged in the closed cavity; a collecting pipe, opposite to the blowing device, the blowing device being used to blow the debris milled by the milling device toward the collecting pipe; The collecting container is arranged outside the closed cavity, the collecting container is communicated with the collecting pipe, and is used for collecting debris.

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