Lamination pressing claw of battery cell
By setting up a avoidance groove on the pressing plate of the cell stacking claw, the problem of pole R corner burr piercing the diaphragm is solved, and more efficient and high-quality battery cell production is achieved.
Patent Information
- Application Number
- CN202422283542.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-18
AI Technical Summary
When the traditional pressure claws press the electrode plate of the battery cell, the diaphragm at the R-angle position of the electrode plate is easily punctured by burrs, resulting in cell quality problems.
A battery cell laminated pressure claw is designed, and a avoiding groove is provided on the press-fit plate to avoid burrs at the R corner of the pole plate to avoid puncture of the diaphragm, and is formed integrally with the press-fit plate to enhance the overall strength.
Effectively prevent burrs at the R corner of the pole sheet from punctured through the diaphragm, improve the efficiency and quality of the production process, and reduce the occurrence of abnormal situations.
Smart Images
Figure CN223123944U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of new energy battery cells, and particularly to a lamination press jaw for a battery cell. Background Art
[0002] During the production and manufacturing process of lithium-ion soft-pack battery cells, it is necessary to perform standardized slicing on the pole coil of the single-sided foil material. After cutting, the positive and negative electrode materials and the separator are stacked in a "Z" shape together to complete the lamination of the battery cell. The lamination process is one of the most critical steps in the production of soft-pack battery cells. The structural state, pole piece coating, and insulation during the lamination process are key indicators for judging the performance of the battery cell.
[0003] During the lamination process, burrs will be generated at the R corner position after the pole piece contacts components such as the cutting knife. And during the lamination process, it is always necessary to use traditional press jaws to press the pole piece to ensure the stability of the internal structure of the battery cell. As a result, the separator at the R corner position of the pole piece is easily punctured by the burrs, which in turn leads to quality problems of the battery cell. Utility Model Content
[0004] This application provides a lamination press jaw for a battery cell, aiming to solve the problem that the separator at the R corner position of the pole piece is easily punctured by burrs when the traditional press jaw presses the pole piece of the battery cell.
[0005] To solve the above technical problems, this application proposes a lamination press jaw for a battery cell, which includes:
[0006] A pressing plate, including a first surface for pressing the lamination, and an avoidance groove is provided on the first surface.
[0007] Further, a side opening is provided on one side of the avoidance groove close to the edge of the pressing plate.
[0008] Further, a first rounded corner is provided on one side of the avoidance groove away from the side opening, and the center of the first rounded corner is located in the avoidance groove.
[0009] Further, a second rounded corner is provided on one side of the avoidance groove close to the side opening, and the center of the second rounded corner is located outside the avoidance groove.
[0010] Further, the lamination press jaw for the battery cell further includes a fixing plate, and the fixing plate is fixedly connected to the pressing plate.
[0011] Further, a plurality of fixing through holes are provided on the fixing plate to facilitate the fixing of the lamination press jaw for the battery cell.
[0012] Further, a positioning through hole is also provided on the fixing plate, and the positioning through hole is located at the center position of the fixing plate.
[0013] Further, the pressing plate and the fixing plate are integrally formed.
[0014] Further, the pressing plate includes a second surface, and the second surface is arched.
[0015] Further, the width of the avoiding groove is less than or equal to one-third of the width of the pressing plate.
[0016] The beneficial effect of the present application is that in the laminated pressing claw of the battery cell provided in the present application, by providing an avoiding groove on the pressing plate to avoid the burr at the R corner of the pole piece, when the pressing plate presses the pole piece, the burr at the R corner of the pole piece will not pierce the diaphragm, thereby reducing the occurrence of abnormal situations in the production line and improving the efficiency and quality of the production process. Description of the Drawings
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:
[0018] Figure 1 is the front view of the laminated pressing claw of the battery cell in an embodiment of the present utility model;
[0019] Figure 2 is the side view of the laminated pressing claw of the battery cell in an embodiment of the present utility model.
[0020] Explanation of the reference numerals: 100, pressing plate; 110, first surface; 111, avoiding groove; 112, first rounded corner; 113, second rounded corner; 114, side opening; 120, second surface; 200, fixing plate; 210, fixing through hole; 220, positioning through hole. Detailed Embodiment
[0021] In order to make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the present application in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.
[0022] Those skilled in the art of the present technology can understand that, unless specifically stated, the singular forms "a", "an", "the above" and "the" used herein may also include the plural forms. It should be further understood that the term "including" used in the description of the present application means the presence of features, integers, steps, operations, elements, modules, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, modules, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any module and all combinations of one or more related listed items.
[0023] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.
[0024] As Figure 1 shown, the present application provides a lamination press jaw for an electric core. The lamination press jaw for an electric core is used to press the electrode sheet during the production and manufacturing process of the electric core. The lamination press jaw for an electric core includes a pressing plate 100. The pressing plate 100 includes a first surface 110, and an avoidance groove 111 is provided on the first surface 110.
[0025] In a specific embodiment, the lamination press jaw for an electric core includes a pressing plate 100. The pressing plate 100 is generally rectangular. The pressing plate 100 includes a first surface 110. The first surface 110 is generally a rectangular plane. The avoidance groove 111 is generally a rectangular groove. The avoidance groove 111 is provided on the first surface 110. The depth of the avoidance groove 111 is less than the thickness of the pressing plate 100. The avoidance groove 111 is used to make way for the burrs at the R corner of the electrode sheet. Preferably, the length of the avoidance groove 111 is 15 mm, the width is 7 mm, and the depth is 0.3 mm.
[0026] As Figure 1 shown, a side opening 114 is provided on one side of the avoidance groove 111 close to the edge of the pressing plate 100.
[0027] In a specific embodiment, preferably, the avoidance groove 111 is provided in the middle of the edge of the first surface 110. In another specific embodiment, the position of the avoidance groove 111 can be selected according to the actual situation. The avoidance groove 111 communicates with the edge of the pressing plate 100, so that the avoidance groove 111 has a side opening 114 on one side to make way for the R corner of the pole piece.
[0028] As Figure 1 shown, a first rounded corner 112 is provided on the side of the avoidance groove 111 away from the side opening 114, and the center of the first rounded corner 112 is located in the avoidance groove 111.
[0029] In a specific embodiment, at the positions of both corners on the side of the avoidance groove 111 away from the side opening 114, a first rounded corner 112 is provided. The center of the first rounded corner 112 is located in the avoidance groove 111. The setting of the first rounded corner 112 can effectively prevent the laminating claws of the battery cell from leaving indentations on the pole piece. Preferably, the radius of the first rounded corner 112 is 2 mm.
[0030] As Figure 1 shown, a second rounded corner 113 is provided on the side of the avoidance groove 111 close to the edge of the pressing plate 100, and the center of the second rounded corner 113 is located outside the avoidance groove 111.
[0031] In a specific embodiment, at the positions of both corners on the side of the avoidance groove 111 close to the side opening 114, a second rounded corner 113 is provided. The center of the second rounded corner 113 is located outside the avoidance groove 111. The setting of the second rounded corner 113 can effectively prevent the laminating claws of the battery cell from leaving indentations on the pole piece. Preferably, the radius of the second rounded corner 113 is 0.2 mm.
[0032] As Figure 1 shown, the width of the avoidance groove 111 is less than or equal to one-third of the width of the pressing plate 100.
[0033] In a specific embodiment, preferably, the width of the avoidance groove 111 is less than or equal to one-third of the width of the pressing plate 100 to prevent the area of the avoidance groove 111 from being too large and affecting the pressing effect of the pressing plate 100. In another specific embodiment, the width of the avoidance groove 111 can be greater than one-third of the width of the pressing plate 100.
[0034] As Figure 2 shown, the pressing plate 100 includes a second surface 120, and the second surface 120 is arched.
[0035] In a specific embodiment, the opposite side of the first surface 110 on the pressing plate 100 is the second surface 120. The second surface 120 is arched, and the second surface 120 protrudes toward the side away from the first surface 110. The arched second surface 120 can reduce the contact area between the second surface 120 and the diaphragm, thereby effectively preventing the pressing plate 100 from scratching the diaphragm, and can effectively prevent the diaphragm from forming wrinkles when the pressing plate 100 is withdrawn.
[0036] As Figure 1 shown, the laminating claw of the battery cell further includes a fixing plate 200, and the fixing plate 200 is fixedly connected to the pressing plate 100.
[0037] In a specific embodiment, the laminating claw of the battery cell further includes a fixing plate 200. The fixing plate 200 is rectangular, the fixing plate 200 is arranged on the side of the pressing plate 100, and the fixing plate 200 is integrally formed with the pressing plate 100 to facilitate enhancing the overall strength of the laminating claw of the battery cell.
[0038] As Figure 1 shown, a plurality of fixing through holes 210 are provided on the fixing plate 200 to facilitate fixing the laminating claw of the battery cell.
[0039] In a specific embodiment, four fixing through holes 210 are provided on the fixing plate 200. The fixing through holes 210 are circular, the fixing through holes 210 penetrate through the fixing plate 200, and the connecting lines of the centers of the four fixing through holes 210 form a rectangle to facilitate the fixed installation of the laminating claw of the battery cell and an external mechanical structure through the fixing through holes 210.
[0040] As Figure 1 shown, a positioning through hole 220 is further provided on the fixing plate 200, and the positioning through hole 220 is located at the central position of the fixing plate 200.
[0041] In a specific embodiment, a positioning through hole 220 is further provided at the central position of the fixing plate 200. The positioning through hole 220 is circular, the positioning through hole 220 penetrates through the fixing plate 200. After the laminating claw of the battery cell is fixedly installed with an external machine, the position of the laminating claw of the battery cell can be further locked through the positioning through hole 220. In another specific embodiment, multiple positioning through holes 220 can be provided.
[0042] In a specific embodiment, both the pressing plate 100 and the fixing plate 200 are made of stainless steel to prevent the laminating claw of the battery cell from rusting and polluting the battery cell.
[0043] In summary, the laminating jaw of the battery cell includes two parts: a pressing plate 100 and a fixing plate 200. The pressing plate 100 and the fixing plate 200 are integrally formed. The fixing plate 200 is used to fixedly connect the laminating jaw of the battery cell to an external mechanical structure. During the actual working process, the first layer of electrode sheet is laid on the first layer of separator. Driven by the external mechanical structure, the laminating jaw of the battery cell moves towards the first layer of electrode sheet, so that the first surface 110 of the pressing plate 100 presses the first layer of electrode sheet. At this time, the avoidance groove 111 on the first surface 110 corresponds to the R corner of the first layer of electrode sheet, so as to make way for the R corner and prevent the burr at the R corner position of the electrode sheet from piercing the separator. Immediately afterwards, the second layer of separator is laid on the surface of the first electrode sheet, and the second layer of electrode sheet is laid on the second layer of separator. After the second layer of electrode sheet is laid, the laminating jaw of the battery cell is withdrawn from the first layer of electrode sheet and the second layer of separator, and then moves towards the second layer of electrode sheet again, so that the first surface 110 of the pressing plate 100 presses the second layer of electrode sheet, and so on, to stack the separator and the electrode sheet.
[0044] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.
Claims
1. A laminating jaw for an electric cell, characterized in that Comprising: A pressing plate, including a first surface for pressing the stacked sheets, and an avoidance groove is provided on the first surface.
2. The laminating pawl of the battery cell according to claim 1, wherein A side opening is provided on one side of the avoidance groove close to the edge of the pressing plate.
3. The lamination pawl of the battery cell according to claim 2, characterized in that, A first rounded corner is provided on one side of the avoidance groove away from the side opening, and the center of the first rounded corner is located in the avoidance groove.
4. The laminating pawl of the battery cell according to claim 2, wherein, A second rounded corner is provided on one side of the avoidance groove close to the side opening, and the center of the second rounded corner is located outside the avoidance groove.
5. The lamination pawl of the battery cell according to claim 1, wherein The stacked sheet pressing claw of the battery cell further includes a fixing plate, and the fixing plate is fixedly connected to the pressing plate.
6. The laminating pawl of the battery cell according to claim 5, characterized in that, A plurality of fixing through holes are provided on the fixing plate to facilitate fixing the stacked sheet pressing claw of the battery cell.
7. The laminating jaws of the battery cell according to claim 5, characterized in that, A positioning through hole is further provided on the fixing plate, and the positioning through hole is located at the center position of the fixing plate.
8. The laminating pawl of the battery cell according to claim 5, wherein The pressing plate and the fixing plate are integrally formed.
9. The laminating pawl of the battery cell according to claim 1, wherein, The pressing plate includes a second surface, and the second surface is arched.
10. The laminating pawl of the battery cell according to claim 1, wherein The width of the avoidance groove is less than or equal to one-third of the width of the pressing plate.