blue film coating tooling for square-shell battery cells
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2026-08-11
AI Technical Summary
[0005]本实用新型的目的在于：提供方壳电芯包覆蓝膜工装，以解决相关技术中手工对电芯进行蓝膜包覆，由于不同操作人员的操作手法不同，很难保证电芯和蓝膜的相对位置不发生偏移的问题
[0022]本实用新型提供方壳电芯包覆蓝膜工装，该方壳电芯包覆蓝膜工装包括支撑架、限位件和料辊，限位件设置于支撑架且与支撑架相对固定，限位件凹设有矩形限位凹槽，限位凹槽被配置为容纳方壳电芯，限位件被配置为限制方壳电芯相对支撑架移动；料辊设置于支撑架，沿限位凹槽的长度方向，料辊位于限位凹槽的一侧，蓝膜料卷被配置为转动设置于料辊，且蓝膜料卷的轴线沿限位凹槽的宽度方向延伸。使用该方壳电芯包覆蓝膜工装对方壳电芯包覆蓝膜时，首先将方壳电芯放置于限位凹槽内，限位件限制方壳电芯沿限位凹槽的长度方向和宽度方向移动。随后将蓝膜料卷设置于料辊上，此时，蓝膜可以沿限位凹槽的长度方向从蓝膜料卷上卷下，以方便将蓝膜贴附于方壳电芯位于限位凹槽外的壁面上。该工装对方壳电芯和蓝膜料卷的相对位置在支撑架上进行了限位，进而可以有效的改善电芯和蓝膜的相对位置发生偏移的问题，避免蓝膜边缘不齐、电芯表面出现褶皱或气泡等，改善电芯的外观和绝缘性能。提升电芯的可靠性，保证产品的一致性。
Smart Images
Figure CN224625595U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery production technology, and in particular to a tooling for coating prismatic battery cells with blue film. Background Technology
[0002] The blue film coating on the battery cell is a crucial step in lithium-ion battery production. Its functions encompass multiple dimensions, including physical protection, electrical insulation, thermal management assistance, and identification and traceability, directly impacting the battery's safety, stability, and lifespan. The blue film acts like a "blue shield" for the battery, providing reliable protection throughout its entire lifecycle through material properties and structural design.
[0003] In existing technologies, the blue film coating of battery cells is typically applied manually. During the coating process, due to varying techniques among operators, it is difficult to ensure that the relative positions of the battery cell and the blue film do not shift. This can lead to uneven edges of the blue film, wrinkles or bubbles on the battery cell surface, affecting the cell's appearance and insulation performance. Consequently, the quality of the coated blue film is inconsistent, reducing the reliability of the battery cells and making it difficult to guarantee product consistency.
[0004] Therefore, there is an urgent need for a tooling system for coating square-shell battery cells with blue film to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a tooling for coating blue film onto square-shell battery cells, so as to solve the problem in the related technology that when manually coating blue film onto battery cells, it is difficult to ensure that the relative position of the battery cell and the blue film does not shift due to different operating techniques of different operators.
[0006] This utility model provides a tooling for coating blue film onto square-shell battery cells, the tooling comprising:
[0007] Support frame;
[0008] A limiting member is disposed on the support frame and fixed relative to the support frame. The limiting member is recessed with a rectangular limiting groove, which is configured to accommodate a square-shell battery cell. The limiting member is configured to restrict the movement of the square-shell battery cell relative to the support frame.
[0009] A material roller is disposed on the support frame along the length direction of the limiting groove, the material roller is located on one side of the limiting groove, and the blue film roll is configured to be rotatably disposed on the material roller, and the axis of the blue film roll extends along the width direction of the limiting groove.
[0010] As a preferred technical solution for the blue film coating tooling for square-shell battery cells, the limiting member is provided with a first slot and a second slot that communicate with the limiting groove along the width direction.
[0011] The first slot and the second slot are configured to accommodate the positive and negative electrodes of the prismatic battery cell, respectively.
[0012] As a preferred technical solution for the blue film coating tooling for square-shell battery cells, the material roller includes a bracket and a roller shaft. The bracket is fixed to the support frame, the roller shaft is rotatably mounted on the bracket, and the blue film roll is coaxially fixed to the roller shaft.
[0013] As a preferred technical solution for the tooling of coating blue film onto square-shell battery cells, the two ends of the blue film roll are located on both sides of the width direction.
[0014] As a preferred technical solution for the blue film coating tooling for square battery cells, it also includes a rolling assembly. When the blue film of the blue film roll is laid on the limiting groove and covers the square battery cell, the rolling assembly is configured to roll the blue film on the square battery cell.
[0015] As a preferred technical solution for the blue film coating tooling of square-shell battery cells, the support frame includes a base plate and two side plates fixed on the base plate. The two side plates are arranged on both sides of the limiting member along the width direction. The side plates are provided with sliding holes extending along the length direction, and the sliding holes of the two side plates are arranged opposite to each other.
[0016] The rolling assembly includes a pressure roller, with its two ends respectively inserted into the two sliding holes, so that the pressure roller presses the blue film and the square-shell battery cell together, and the pressure roller can roll in the sliding holes along the length direction.
[0017] As a preferred technical solution for the blue film coating tooling for square-shell battery cells, the rolling assembly further includes two grips, which are respectively disposed on both sides of the support frame along the width direction, and the two grips are connected to the two ends of the pressure roller in a one-to-one correspondence.
[0018] As a preferred technical solution for the blue film coating tooling for square-shell battery cells, the grip part is coaxially rotated with the pressure roller.
[0019] As a preferred technical solution for the blue film coating tooling for square-shell battery cells, the pressure roller is covered with an elastic adhesive layer.
[0020] As a preferred technical solution for the blue film coating tooling for square-shell battery cells, multiple limiting members are provided, each with a different size of limiting groove, and one of the multiple limiting members is selectively provided on the support frame.
[0021] The beneficial effects of this utility model are as follows:
[0022] This utility model provides a tooling for coating blue film onto prismatic battery cells. The tooling includes a support frame, a limiting member, and a material roller. The limiting member is disposed on and fixed relative to the support frame, and has a rectangular limiting groove configured to accommodate the prismatic battery cell. The limiting member is configured to restrict the movement of the prismatic battery cell relative to the support frame. The material roller is disposed on the support frame, along the length of the limiting groove, and is located on one side of the limiting groove. The blue film roll is rotatably mounted on the material roller, and the axis of the blue film roll extends along the width of the limiting groove. When using this tooling to coat blue film onto a prismatic battery cell, the prismatic battery cell is first placed in the limiting groove, and the limiting member restricts the movement of the prismatic battery cell along the length and width of the limiting groove. The blue film roll is then placed on the roller. At this point, the blue film can be rolled off the roll along the length of the limiting groove, facilitating its attachment to the wall surface of the square-shell battery cell located outside the limiting groove. This fixture limits the relative position of the square-shell battery cell and the blue film roll on the support frame, effectively improving the problem of relative positional misalignment between the cell and the blue film. This avoids uneven edges of the blue film, wrinkles or bubbles on the cell surface, improving the cell's appearance and insulation performance. It also enhances cell reliability and ensures product consistency. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of the blue film coating tooling for square-shell battery cells in this embodiment of the present invention.
[0024] In the picture:
[0025] X: Length direction; Y: Width direction; Z: Height direction;
[0026] 1. Support frame; 11. Base plate; 12. Side plate; 121. Sliding hole;
[0027] 2. Limiting component; 21. Limiting groove; 22. First slot; 23. Second slot;
[0028] 3. Material roller; 31. Support; 32. Roller shaft;
[0029] 4. Roller assembly; 41. Pressure roller; 42. Hand grip. Detailed Implementation
[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.
[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0034] like Figure 1As shown, this embodiment provides a blue film coating fixture for square-shell battery cells. The fixture includes a support frame 1, a limiting member 2, and a material roller 3. The limiting member 2 is disposed on and fixed relative to the support frame 1. The limiting member 2 has a rectangular limiting groove 21 recessed therein, configured to accommodate the square-shell battery cell and restrict the movement of the square-shell battery cell relative to the support frame 1. The material roller 3 is disposed on the support frame 1, along the length direction X of the limiting groove 21, and is located on one side of the limiting groove 21. The blue film roll is rotatably mounted on the material roller 3, and the axis of the blue film roll extends along the width direction Y of the limiting groove 21. When using this blue film coating fixture to coat a square-shell battery cell with blue film, the square-shell battery cell is first placed in the limiting groove 21. The limiting member 2 restricts the movement of the square-shell battery cell along the length direction X and the width direction Y of the limiting groove 21. The blue film roll is then placed on the roller 3. At this point, the blue film can be rolled off the roll along the length X of the limiting groove 21, facilitating its attachment to the wall surface of the square-shell battery cell outside the limiting groove 21. This fixture limits the relative position of the square-shell battery cell and the blue film roll on the support frame 1, effectively improving the problem of relative positional misalignment between the battery cell and the blue film. This avoids uneven edges of the blue film, wrinkles or bubbles on the battery cell surface, improving the battery cell's appearance and insulation performance. It also enhances the reliability of the battery cell and ensures product consistency.
[0035] Specifically, after installing the square battery cell and the blue film roll into place, the free end of the blue film is pulled out from the blue film roll. Then, the free end of the blue film is attached to the side of the square battery cell away from the material roller 3 along the length X of the limiting groove 21. Next, the blue film is attached to the side of the square battery cell exposed in the limiting groove 21. Then, the square battery cell is removed, and after rotating the square battery cell 180° around the width Y of the limiting groove 21, the square battery cell is placed back into the limiting groove 21. At this point, the blue film is applied to the other side of the square battery cell exposed in the limiting groove 21. The blue film is attached to two side walls of the square battery cell along the height direction Z of the limiting groove 21, and one side wall of the square battery cell along the length direction X of the limiting groove 21. When cutting the blue film, an extra section of the blue film is cut off so that the extra section of the blue film can cover the other side wall of the square battery cell along the length direction X of the limiting groove 21. In summary, it is possible to apply the blue film to the four consecutive side walls of the square battery cell.
[0036] Optionally, along the width direction Y of the limiting groove 21, the limiting member 2 is recessed with a first slot 22 and a second slot 23 communicating with the limiting groove 21; the first slot 22 and the second slot 23 are configured to respectively accommodate the positive and negative electrodes of the prismatic battery cell. In this embodiment, based on the limiting effect of the limiting member 2 on the prismatic battery cell by the groove wall of the limiting groove 21, the limiting effect of the limiting member 2 on the prismatic battery cell is further improved by the limiting effect of the first slot 22 and the second slot 23 by the groove walls of the first slot 22 and the second slot 23.
[0037] Optionally, the material roller 3 includes a bracket 31 and a roller shaft 32. The bracket 31 is fixed to the support frame 1, and the roller shaft 32 is rotatably mounted on the bracket 31. The blue film roll is coaxially fixed to the roller shaft 32. In this embodiment, one end of the bracket 31 is fixed to the support frame 1, and the other end of the bracket 31 is rotatably engaged with the roller shaft 32 through a bearing, thereby enabling the blue film roll to rotate around the roller shaft 32 to achieve the winding and unwinding of the blue film. At the same time, the blue film roll is coaxially fixed to the roller shaft 32, thereby preventing the blue film roll from moving relative to the roller shaft 32 along the axial direction of the roller shaft 32.
[0038] Optionally, the two ends of the blue film roll are located on both sides of the limiting groove 21 along the width direction Y. In this embodiment, after the blue film is applied to the four side walls of the square battery cell along the height direction Z and length direction X of the limiting groove 21, if the two ends of the blue film roll are located on both sides of the limiting groove 21 along the width direction Y, thus causing the two ends of the blue film along the width direction Y of the limiting groove 21 to extend beyond the square battery cell, this part of the blue film can cover the two end faces of the square battery cell along the width direction Y of the limiting groove 21.
[0039] Optionally, the limiting member 2 has a rectangular structure, and the length direction X and width direction Y of the limiting groove 21 are consistent with the length direction X and width direction Y of the limiting member 2. The two ends of the blue film roll are flush with the two ends of the limiting member 2 along the width direction Y. In this embodiment, when the blue film is covered on the square battery cell, the two sides of the blue film can be aligned with the two sides of the limiting member 2 along the width direction Y, further improving the consistency of position between the blue film and the square battery cell and preventing positional deviation.
[0040] Optionally, the blue film coating fixture for the prismatic battery cell further includes a rolling assembly 4. When the blue film roll is laid on the limiting groove 21 and covers the prismatic battery cell, the rolling assembly 4 is configured to roll the blue film on the prismatic battery cell. In this embodiment, this setting can roll out air bubbles between the blue film and the prismatic battery cell, and can also roll flat the wrinkled areas of the blue film.
[0041] Optionally, the support frame 1 includes a base plate 11 and two side plates 12 fixed on the base plate 11. The two side plates 12 are disposed on both sides of the limiting member 2 along the width direction Y of the limiting groove 21. The side plates 12 are provided with sliding holes 121 extending along the length direction X of the limiting groove 21. The sliding holes 121 of the two side plates 12 are arranged opposite to each other. The rolling assembly 4 includes a pressure roller 41, the two ends of which are respectively inserted into the two sliding holes 121 so that the pressure roller 41 presses the blue film and the square battery cell together. The pressure roller 41 can roll within the sliding holes 121 along the length direction X of the limiting groove 21. In this embodiment, by rolling the pressure roller 41 along the length direction X of the limiting groove 21, the blue film and the square battery cell can be pressed together to remove air bubbles and wrinkles between the blue film and the square battery cell. When the two ends of the pressure roller 41 are respectively inserted into the sliding holes 121 on the two side walls, the sliding holes 121 limit the pressure roller 41 along the side wall of the limiting groove 21 in the height direction Z, thereby pressing the blue film and the square battery cell together to expel air bubbles and improve the flatness.
[0042] Optionally, the rolling assembly 4 further includes two grips 42, which are respectively disposed on both sides of the support frame 1 along the width direction Y of the limiting groove 21, and the two grips 42 are connected to the two ends of the pressure roller 41 respectively. In this embodiment, the operator holds the two grips 42 with both hands and then drags the pressure roller 41 to slide along the length direction X of the limiting groove 21.
[0043] Optionally, the grip portion 42 is rotatably coupled to the pressure roller 41 along the same axis. In this embodiment, this arrangement allows the operator to push the pressure roller 41 to roll simply by gripping both grip portions 42. In this case, the grip portions 42 will not roll along with the pressure roller 41, thus facilitating the operator's operation.
[0044] Optionally, the grip 42 and the pressure roller 41 are coaxially rotated through a bearing.
[0045] Optionally, the outer ring of the bearing is fixed to the grip portion 42, and the inner ring of the bearing is sleeved on the pressure roller 41 and is interference-fitted with the pressure roller 41.
[0046] Optionally, the pressure roller 41 is covered with an elastic adhesive layer. In this embodiment, this feature can protect the battery cell from pressure damage and deformation. At the same time, the elastic adhesive layer can increase the friction between the pressure roller 41 and the blue film, preventing sliding friction between them and thus avoiding scratches on the blue film.
[0047] Optionally, multiple limiting members 2 are provided, each with a different size limiting groove 21, and one of the multiple limiting members 2 is selectively disposed on the support frame 1. In this embodiment, since the sizes of different models of prismatic battery cells vary, multiple limiting members 2 are provided to adapt the tooling to different models of prismatic battery cells. The multiple limiting members 2 are matched one-to-one with multiple models of support frames 1, so that the corresponding size of the limiting member 2 can be selectively installed on the support frame 1 according to the model of the prismatic battery cell.
[0048] 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 other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations 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 tooling for coating square-shell battery cells with blue film, characterized in that, include: Support frame (1); A limiting member (2) is disposed on the support frame (1) and fixed relative to the support frame (1). The limiting member (2) has a rectangular limiting groove (21) recessed therein. The limiting groove (21) is configured to accommodate a square-shell battery cell. The limiting member (2) is configured to restrict the square-shell battery cell from moving relative to the support frame (1). Material roller (3) is disposed on the support frame (1) along the length direction (X) of the limiting groove (21). The material roller (3) is located on one side of the limiting groove (21). The blue film roll is configured to be rotatably disposed on the material roller (3), and the axis of the blue film roll extends along the width direction (Y) of the limiting groove (21).
2. The blue film coating fixture for square-shell battery cells according to claim 1, characterized in that, Along the width direction (Y), the limiting member (2) is recessed with a first slot (22) and a second slot (23) that communicate with the limiting groove (21); The first slot (22) and the second slot (23) are configured to accommodate the positive and negative electrodes of the prismatic battery cell, respectively.
3. The blue film coating fixture for square-shell battery cells according to claim 1, characterized in that, The material roller (3) includes a bracket (31) and a roller shaft (32). The bracket (31) is fixed to the support frame (1), and the roller shaft (32) is rotatably mounted on the bracket (31). The blue film roll is coaxially fixed to the roller shaft (32).
4. The blue film coating fixture for square-shell battery cells according to claim 3, characterized in that, The two ends of the blue film roll are located on both sides of the limiting groove (21) along the width direction (Y).
5. The blue film coating fixture for square-shell battery cells according to any one of claims 1-4, characterized in that, It also includes a rolling assembly (4), which is configured to roll the blue film on the square-shell battery cell when the blue film roll is laid on the limiting groove (21) and covers the square-shell battery cell.
6. The blue film coating fixture for square-shell battery cells according to claim 5, characterized in that, The support frame (1) includes a base plate (11) and two side plates (12) fixed on the base plate (11). The two side plates (12) are arranged on both sides of the limiting member (2) along the width direction (Y). The side plates (12) are provided with sliding holes (121) extending along the length direction (X). The sliding holes (121) of the two side plates (12) are arranged opposite to each other. The rolling assembly (4) includes a pressure roller (41), with both ends of the pressure roller (41) inserted into the two sliding holes (121) respectively, so that the pressure roller (41) presses the blue film and the square battery cell together, and the pressure roller (41) can roll in the sliding hole (121) along the length direction (X).
7. The blue film coating fixture for square-shell battery cells according to claim 6, characterized in that, The rolling assembly (4) also includes two grips (42), which are respectively disposed on both sides of the support frame (1) along the width direction (Y), and the two grips (42) are connected to the two ends of the pressure roller (41) in a one-to-one correspondence.
8. The blue film coating fixture for square-shell battery cells according to claim 7, characterized in that, The grip (42) is rotatably coupled to the pressure roller (41) on the same axis.
9. The blue film coating fixture for square-shell battery cells according to claim 6, characterized in that, The pressure roller (41) is covered with an elastic rubber layer.
10. The blue film coating fixture for square-shell battery cells according to claim 1, characterized in that, Multiple limiting members (2) are provided, and the limiting groove (21) of each limiting member (2) has a different size. One of the multiple limiting members (2) is selected and disposed on the support frame (1).