Battery cell welding and pressing tool
By designing a cell welding clamping fixture, using brackets, pressure blocks, and a rotation mechanism to protect the terminals during the cell welding process, the problem of traditional protection measures being unable to effectively protect the terminals is solved, thus improving safety during the welding process.
Patent Information
- Application Number
- CN202520127963.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-20
AI Technical Summary
In the manufacturing process of lithium-ion batteries, traditional protective measures are insufficient to effectively protect the terminals during the welding process of the long and thin-walled cell cover plate and the terminal post, resulting in damage to the terminal post during the welding process, which affects the product qualification rate and cost.
A battery cell welding clamping fixture was designed, including a bracket, a pressure block, a rotating mechanism, and a floating part. The bracket is assembled on an external carrier, the pressure block houses the electrode post, the rotating mechanism drives the pressure block to rotate, and the elastic element and protective element in the floating part protect the electrode post and ensure the safety of the electrode post during the welding process.
This improves the protection of the terminals during cell welding, reduces the risk of collisions during welding, and enhances the safety and product qualification rate of cell welding.
Smart Images
Figure CN223734225U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of electric core welding, especially relates to a electric core welding pressure tool. BACKGROUND
[0002] In the precise manufacturing process of lithium ion batteries, the integration of the positive and negative cover plates and the aluminum shell is a key link. This step requires that the two be tightly pressed and preliminarily spot-welded, and then fully welded to ensure the stability of the structure. When full welding is performed, it is crucial to effectively protect the pole column on the battery cover plate, because the pole column is made of non-metallic material and is extremely sensitive to spatter and light leakage during the welding process. Once damaged, it is difficult to repair, directly affecting the product's pass rate and cost.
[0003] In the past, the top cover pressure block was used as a protective measure to cover the top cover. However, in the face of such special designs as blade electric cores, which are long and thin-walled, the space between the pole column and the edge of the top cover is extremely limited, making it difficult for the pressure block to fully adhere to the top cover. In addition, considering that the welding process uses a side seam welding method, any small gap can become a loophole for laser penetration, directly threatening the safety of the pole column, making the traditional method ineffective in ensuring the protective effect of mass production, and not conducive to protecting the pole column during the electric core cover plate welding process. SUMMARY
[0004] Therefore, the utility model aims to provide an electric core welding pressure tool to improve the safety of the pole column during electric core cover plate welding.
[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:
[0006] An electric core welding pressure tool for pressing the top cover of an electric core during welding, the pressure tool comprising:
[0007] a bracket capable of assembling the pressure tool on an external carrier;
[0008] a pressure block capable of accommodating the pole column of the electric core to protect the pole column during welding of the electric core top cover;
[0009] a rotating mechanism provided on the bracket, and the rotating mechanism can drive the pressure block to rotate with the electric core during welding of the electric core top cover.
[0010] Further, the pressure block is recessed inward from the pressure block to form a sink, when the pressure block presses the electric core top cover, the pole column is located in the sink, and the side wall of the pressure block towards the electric core cover plate abuts on the electric core cover plate.
[0011] Further, the sink groove is slidably provided with a floating part, when the pole column is accommodated in the sink groove, the floating part abuts on the pole column, and the pole column is accommodated in the floating part.
[0012] Further, the floating part comprises a connecting piece arranged in the sink groove, a protection piece slidably arranged on the connecting piece, and an elastic piece arranged between the connecting piece and the protection piece; the connecting piece comprises a column body and a boss arranged at the end of the column body, the column body passes through the protection piece and is connected to the pressing block, and the boss is arranged on the side of the protection piece facing the pole column, so as to constrain the protection piece in the sink groove; when the pole column is accommodated in the floating part, the protection piece covers the pole column, and the elastic piece can be compressed.
[0013] Further, the elastic piece is sleeved on the connecting piece.
[0014] Further, the elastic piece is a spring.
[0015] Further, a groove is arranged on the side wall of the protection piece facing the pole column, when the bottom of the boss abuts on the protection piece, the boss can be accommodated in the groove.
[0016] Further, a buffer layer is arranged on the inner wall of the protection piece facing the pole column.
[0017] Further, the support comprises a bottom plate, a base plate arranged on the bottom plate, and a first plate body and a second plate body oppositely arranged on the base plate; the support is assembled on the external carrier through the first plate body and the second plate body, and first and second reinforcing plates are arranged at the connection of the bottom plate and the base plate.
[0018] Further, the rotating mechanism comprises a rotating motor arranged on the base plate, and a rotating shaft outwardly extending from the output end of the rotating motor; the rotating shaft extends out of the base plate and is connected to the pressing block.
[0019] Compared with the prior art, the utility model has the following advantages:
[0020] The electric core welding and pressing tool can press the electric core top cover during welding, the support is arranged to facilitate assembly on the external carrier, the pressing block is arranged to press the electric core top cover and accommodate the pole column in the pressing block to protect the pole column, the rotating mechanism is arranged to press the electric core top cover in cooperation with the pressing block during rotation of the electric core in the welding process, thereby helping to improve the protection effect of the pole column during the electric core top cover welding process and improving the safety of the pole column during the electric core top cover welding process.
[0021] In addition, the setting of the sink groove facilitates the accommodation of the pole, and the structure is simple and beneficial to design implementation. Through the setting of the floating part, the floating part set by sliding can better accommodate the pole, so as to improve the protection effect of the pole and facilitate design implementation. Through the setting of the connecting column and the elastic piece cooperating with the protection piece, the pole is facilitated to be accommodated in the floating part. Through the setting of the connecting column, the protection piece is constrained in the sink groove, and the setting of the elastic piece facilitates the sliding of the floating part in the sink groove. The elastic piece is sleeved on the connecting piece, which facilitates assembly, and the elastic piece is limited by the connecting piece to prevent the elastic piece from deviating from the preset position, which is beneficial to design implementation.
[0022] In addition, the elastic piece is a spring, which facilitates assembly and is beneficial to design implementation. Through the setting of the groove, the boss is facilitated to be accommodated, so as to reduce the friction risk of the boss to the pole and facilitate to improve the movement space of the protection piece, which is beneficial to design implementation. Through the setting of the buffer layer, the extrusion of the protection piece and the pole is buffered, and the pole is better protected through the setting of the buffer layer. Through the setting of the bottom plate and the base plate, the arrangement of the pressing block and the rotating mechanism is facilitated. Through the setting of the first reinforcing plate and the second reinforcing plate, the structural strength of the support can be improved, and the setting of the first plate body and the second plate body facilitates the assembly of the support on the external carrier, which is beneficial to design implementation. The rotating mechanism includes a rotating motor and a rotating shaft, which has a simple structure, and the rotating motor and the pressing block are distributed on both sides of the base plate, which facilitates to reduce other structures in the working space during the welding of the battery cell, so as to reduce the collision risk during the welding and transfer of the battery cell, which is beneficial to design implementation. BRIEF DESCRIPTION OF DRAWINGS
[0023] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application. In the drawings:
[0024] Figure 1 A structural schematic view of the battery cell welding and pressing tool according to the embodiment of the present application;
[0025] Figure 2 A front view of the battery cell welding and pressing tool according to the embodiment of the present application;
[0026] Figure 3 An enlarged view of A in Figure 2
[0027] Figure 4 A sectional view of the pressing block according to the embodiment of the present application;
[0028] BRIEF DESCRIPTION OF DRAWINGS
[0029] 1, support;
[0030] 101, bottom plate; 102, base plate; 103, first plate body; 104, second plate body; 105, first reinforcing plate; 106, second reinforcing plate;
[0031] 2, briquetting; 3, sink;
[0032] 4, floating part;
[0033] 401, connecting piece;
[0034] 4011, column; 4012, boss;
[0035] 402, protection piece;
[0036] 4021, groove;
[0037] 403, elastic piece;
[0038] 5, rotating mechanism;
[0039] 501, rotating motor; 502, rotating shaft. DETAILED DESCRIPTION
[0040] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.
[0041] In the description of the utility model, it should be noted that if the terms indicating the orientation or position relationship such as "up", "down", "inner", "outer" appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, if the terms "first", "second" appear, they are also used for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0042] Taking the cell welding and pressing tool described in the utility model as an example, the orientation words used in the embodiments such as "up, down, left, right, front, back" are defined with the up-down direction (also called height direction), left-right direction (also called width direction) and front-back direction (also called length direction) of the cell welding and pressing tool as the reference. "Inner, outer" is defined with the contour of the corresponding component as the reference, for example, "inner" and "outer" are defined with the contour of the cell welding and pressing tool as the reference, the side close to the middle of the cell welding and pressing tool is "inner", and vice versa.
[0043] Further, in the description of the utility model, unless otherwise expressly limited, the terms "mounting", "connecting", "connection" and "connector" should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate media, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.
[0044] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.
[0045] Embodiment one
[0046] The embodiment relates to a battery cell welding and pressing tool, which can improve the safety of the pole during the welding of the battery cell cover plate by optimizing the structure of the pressing tool.
[0047] As a whole, as shown in the drawing, Figures 1 to 4 The battery cell welding and pressing tool in the embodiment is used to press the battery cell top cover during the welding of the battery cell, and comprises a support 1, a pressing block 2 and a rotating mechanism 5.
[0048] The support 1 can assemble the pressing tool on an external carrier, the pressing block 2 can accommodate the pole of the battery cell to protect the pole during the welding of the battery cell top cover, and the rotating mechanism 5 is arranged on the support 1 and can drive the pressing block 2 to rotate with the battery cell during the welding of the battery cell top cover.
[0049] As arranged above, the battery cell welding and pressing tool in the embodiment can press the battery cell top cover during the welding of the battery cell, the support 1 is arranged to facilitate assembly on the external carrier, the pressing block 2 is arranged to press the battery cell top cover and accommodate the pole in the pressing block 2 to protect the pole, and the rotating mechanism 5 is arranged to press the battery cell top cover in cooperation with the pressing block 2 to rotate with the battery cell during the welding process, thereby helping to improve the protection effect of the pole during the welding process of the battery cell top cover and improving the safety of the pole during the welding process of the battery cell top cover.
[0050] The support 1 of the battery cell welding and pressing tool in the embodiment can assemble the pressing tool on an external carrier to adapt to other cooperating tools during the welding of the battery cell cover plate, wherein the external carrier can comprise a front pushing mechanism for clamping the battery cell and pushing the end of the battery cell to be welded into the pressing tool and a laser welding mechanism for completing the welding.
[0051] Specifically, in the embodiment, as an exemplary structure, in combination with Figures 1 to 4As shown, the support 1 of the cell welding and pressing tool in the embodiment includes a bottom plate 101, a base plate 102 arranged on the bottom plate 101, and a first plate body 103 and a second plate body 104 arranged on the bottom plate 101, the support 1 is assembled on an external carrier through the first plate body 103 and the second plate body 104, and the first plate body 103 and the second plate body 104 are respectively provided with a first reinforcing plate 105 and a second reinforcing plate 106 at the connection positions with the base plate 102, the arrangement of the bottom plate 101 and the base plate 102 facilitates the arrangement of the pressing block 2 and the rotating mechanism 5, the arrangement of the first reinforcing plate 105 and the second reinforcing plate 106 can improve the structural strength of the support 1, and the arrangement of the first plate body 103 and the second plate body 104 facilitates the assembly of the support 1 on the external carrier, which is beneficial to design and implementation.
[0052] The pressing block 2 in the embodiment cooperates with the rotating mechanism 5, which can press the cell cover plate to protect the pole and rotate the cell to cooperate with the welding mechanism to complete welding. In order to better protect the pole of the cell, the pressing block 2 in the embodiment is recessed inwardly from the side of the pressing block 2 facing the pole to form a sink 3, when the pressing block 2 presses the cell top cover, the pole is located in the sink 3, and the side wall of the pressing block 2 facing the cell cover plate abuts on the cell cover plate. Through the arrangement of the sink 3, the pole can be conveniently accommodated, and the structure is simple, which is beneficial to design and implementation.
[0053] Specifically, in combination with Figures 1 to 4 As shown, the sink 3 on the pressing block 2 in the embodiment is slidably provided with a floating part 4, when the pole is accommodated in the sink 3, the floating part 4 abuts on the pole, and the pole is accommodated in the floating part 4. Through the sliding arrangement of the floating part 4, the pole can be better accommodated to improve the protection effect of the pole, which is beneficial to design and implementation.
[0054] In more detail, the floating part 4 in the pressing block 2 in the embodiment includes a connecting piece 401 arranged in the sink 3, a protection piece 402 slidably arranged on the connecting piece 401, and an elastic piece 403 arranged between the connecting piece 401 and the protection piece 402, the connecting piece 401 includes a column body 4011 and a boss 4012 arranged at the end of the column body 4011, the column body 4011 passes through the protection piece 402 and is connected to the pressing block 2, and the boss 4012 is located at the side of the protection piece 402 facing the pole to constrain the protection piece 402 in the sink 3, when the pole is accommodated in the floating part 4, the protection piece 402 covers the pole, and the elastic piece 403 can be compressed. Through the arrangement of the connecting column and the elastic piece 403 cooperating with the protection piece 402, the accommodation of the pole in the floating part 4 is facilitated, through the arrangement of the connecting column to constrain the protection piece 402 in the sink 3, and the arrangement of the elastic piece 403, the sliding of the floating part 4 in the sink 3 is facilitated.
[0055] The elastic member 403 in the embodiment may be a spring, for example, which is sleeved on the column body 4011 of the connecting member 401 and is compressed when the pressing block 2 is pressed against the cell cover plate, so that the elastic member 403 is sleeved on the connecting member 401, facilitating assembly, and the elastic member 403 is limited by the connecting member 401 to prevent the elastic member 403 from deviating from the preset position. Since the elastic member 403 is a spring, assembly is facilitated and design implementation is facilitated.
[0056] In addition, the protection member 402 in the embodiment is provided with a groove 4021 on the side wall facing the pole, and when the bottom of the boss 4012 abuts against the protection member 402, the boss 4012 can be accommodated in the groove 4021. The groove 4021 facilitates accommodation of the boss 4012, reduces the risk of friction of the boss 4012 against the pole, and facilitates improvement of the movement space of the protection member 402, facilitating design implementation.
[0057] In order to better protect the pole, the protection member 402 in the embodiment is provided with a buffer layer on the inner wall facing the pole. The buffer layer may be a rubber layer or a buffer foam, for example. The buffer layer facilitates buffer protection of the protection member 402 from extrusion by the pole, and better protects the pole through the buffer layer.
[0058] In addition, as shown in Figures 1 to 4 The rotating mechanism 5 in the embodiment includes a rotating motor 501 provided on the base plate 102 and a rotating shaft 502 extending outward from the output end of the rotating motor 501. The rotating shaft 502 extends out of the base plate 102 and is connected to the pressing block 2. The rotating mechanism 5 includes the rotating motor 501 and the rotating shaft 502, which is simple in structure. The rotating motor 501 and the pressing block 2 are distributed on both sides of the base plate 102, which facilitates reduction of other structures in the working space during welding of the cells, reduces the risk of collision during welding and transfer of the cells, and facilitates design implementation.
[0059] When the cell welding and pressing tool in the embodiment is used, the cells that have been pre-welded by a supporting facility are first fed to the pressing tool, and the front pushing mechanism pushes the end of the cell into the pressing block 2. At this time, the pole is accommodated in the protection member 402, and the rotating mechanism 5 drives the pressing block 2 to rotate the cell in cooperation with the laser welding mechanism to complete welding of the cell cover plate.
[0060] The cell welding and pressing tool in the embodiment can press the cell top cover during welding of the cell and accommodate the pole in the pressing block 2 to protect the pole. The pressing block 2 can press the cell top cover during rotation of the cell during welding, thereby facilitating improvement of the protection effect of the pole during welding of the cell top cover and improving the safety of the pole during welding of the cell top cover.
[0061] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A battery cell welding clamping fixture, used to clamp the top cover of the battery cell during battery cell welding, characterized in that, The pressing tool comprises: a support capable of assembling the pressing tool on an external carrier; a pressing block capable of accommodating a pole of the battery cell to protect the pole when the battery cell top cover is welded; a rotating mechanism arranged on the support and capable of driving the pressing block to rotate with the battery cell when the battery cell top cover is welded.
2. The battery cell welding pressing tool according to claim 1, wherein: the pressing block is inwardly recessed from the pressing block to form a recess, when the pressing block presses the battery cell top cover, the pole is located in the recess, and the side wall of the pressing block towards the battery cell top cover abuts on the battery cell top cover.
3. The battery cell welding pressing tool according to claim 2, wherein: a floating part is slidably arranged in the recess, when the pole is accommodated in the recess, the floating part abuts on the pole, and the pole is accommodated in the floating part.
4. The battery cell welding pressing tool according to claim 3, wherein: the floating part comprises a connecting piece arranged in the recess, a protection piece slidably arranged on the connecting piece, and an elastic piece arranged between the connecting piece and the protection piece; the connecting piece comprises a column and a boss arranged at the end of the column, the column passes through the protection piece and is connected to the pressing block, and the boss is located on the side of the protection piece towards the pole to constrain the protection piece in the recess; when the pole is accommodated in the floating part, the protection piece covers the pole, and the elastic piece can be compressed.
5. The battery cell welding pressing tool according to claim 4, wherein: the elastic piece is sleeved on the connecting piece.
6. The battery cell welding pressing tool according to claim 5, wherein: the elastic piece is a spring.
7. The battery cell welding pressing tool according to claim 4, wherein: a groove is arranged on the side wall of the protection piece towards the pole, when the bottom of the boss abuts on the protection piece, the boss can be accommodated in the groove.
8. The battery cell welding pressing tool according to claim 4, wherein: a buffer layer is arranged on the inner wall of the protection piece towards the pole.
9. The battery cell welding pressing tool according to any one of claims 1 to 8, wherein: the support comprises a bottom plate, a base plate arranged on the bottom plate, and a first plate body and a second plate body oppositely arranged on the base plate; the support is assembled on the external carrier through the first plate body and the second plate body, and first and second reinforcing plates are arranged at the connection of the bottom plate and the base plate, respectively.
10. The battery cell welding pressing tool according to claim 9, wherein: the rotating mechanism comprises a rotating motor arranged on the base plate, and a rotating shaft outwardly extending from the output end of the rotating motor; the rotating shaft extends out of the base plate and is connected to the pressing block.