Lithium battery positive electrode tabletting die

Abstract

The utility model discloses a lithium battery positive electrode tabletting mold which comprises a main mold, the main mold is fixed to a base, a mold cavity with an opening in the top is formed in the main mold, the lithium battery positive electrode tabletting mold further comprises a flattening plate, the flattening plate is slidably connected to the top of the main mold, and the flattening plate is driven by a driving device to shield or open the mold cavity. After raw materials are poured into the mold cavity, the materials higher than the mold are bulldozed through the bulldozing plate, so that air in the mold cavity is exhausted, the air volume is reduced, the bulldozing plate is controlled to open the mold cavity for pressing, the sprayed raw materials are reduced or avoided, and the production quality of products is improved.

Description

Technical Field

[0001] This application belongs to the field of lithium battery cathode production, and specifically relates to a lithium battery cathode pressing mold. Background Technology

[0002] With the development of electric vehicles, electronic products, and other technologies, the performance of lithium batteries is becoming increasingly important, and the demand for lithium batteries is also increasing. As one of the important components, the production efficiency and product quality of lithium battery cathodes are becoming increasingly important.

[0003] In the production process of lithium battery cathodes, lithium source and metal oxide need to be mixed evenly in a certain proportion, then pressed into shape in a pressing mold, and finally cut to complete the production of lithium battery cathodes. The above method requires two steps, which not only increases equipment costs, but also affects product production efficiency due to multiple processes. However, because lithium battery cathode sheets are small in size, direct pressing requires strict process requirements, especially high precision in the weight of raw materials.

[0004] After miniaturizing the positive electrode tableting mold, the raw materials are directly added and piled up in a cone shape. Direct tableting will cause more raw materials to be ejected due to the retention of air, which will affect the product precision.

[0005] Therefore, a new type of lithium battery cathode pressing mold is needed to solve the above problems. Utility Model Content

[0006] To address the shortcomings of the prior art, this application provides a lithium battery cathode pressing mold that can flatten the surface of the raw material before pressing, thereby reducing material ejection during the pressing process.

[0007] The technical effect to be achieved in this application is accomplished through the following solution:

[0008] According to a first aspect of this application, a lithium battery positive electrode pressing mold is provided, including a main mold fixed to a base, the main mold having a cavity with a top opening, and a push plate slidably connected to the top of the main mold, the push plate being driven by a driving device to cover or open the cavity.

[0009] According to this solution, after the raw materials are poured into the mold cavity, the push plate is used to push the material that is higher than the mold to flatten it, thereby expelling the air in the mold cavity, reducing the air volume, controlling the push plate to open the mold cavity before pressing, reducing or avoiding the ejection of raw materials, and improving the product production quality.

[0010] Preferably, the main mold is provided with a plurality of mold cavities, and the push plate can completely cover all of the mold cavities.

[0011] This solution enables the simultaneous production of multiple lithium battery cathodes, improving production efficiency; moreover, the pusher plate can flatten multiple mold cavities at once.

[0012] Preferably, the push plate is provided with through holes, each of which corresponds to a mold cavity, and the inner diameter of the through hole is the same as that of the mold cavity.

[0013] With this solution, after the push plate is pushed, it can be directly placed on top of the main mold and expose the mold cavity. It can be pressed directly without retraction, which improves the production cycle. Moreover, it can block the gap between the mold cavity and the pressure rod, further reducing material ejection and improving accuracy.

[0014] Preferably, the through hole is a funnel-shaped opening facing upwards.

[0015] This design allows the through-hole to act as a guide, preventing collisions with the push plate.

[0016] Preferably, a limiting protrusion is provided on the side of the main mold away from the push plate.

[0017] This design allows the limiting protrusion to restrict the position of the push plate, improving the alignment accuracy between the through hole and the mold cavity.

[0018] Preferably, the driving device is a cylinder, and the two sides of the push plate are provided with light rods arranged parallel to the cylinder, and the light rods are slidably connected to the two sides of the main mold.

[0019] With this solution, the smooth rod acts as a left and right limit, preventing the twisting of the push plate from damaging the cylinder piston rod.

[0020] Preferably, the main mold has a receiving groove in the middle, the cylinder is connected to the bottom of the receiving groove, the mold cavity is divided into two sides of the receiving groove, and the push plate has a groove that matches the receiving groove, the width of the groove being greater than the width of the cylinder.

[0021] This design allows the cylinder to fully enter the groove, which helps reduce the width of the device and facilitates its installation on the hydraulic press's operating table.

[0022] According to one embodiment of this application, the beneficial effect of using this lithium battery positive electrode pressing mold is that it can simultaneously flatten the raw materials in multiple mold cavities to reduce the residual air in the mold cavities, reduce the raw materials ejected due to internal high pressure during the pressing process, and improve the production quality of the product. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this application or the existing technical solutions, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a side view of a lithium battery positive electrode pressing mold according to one embodiment of this application;

[0025] Figure 2 for Figure 1 A top view of the positive electrode pressing mold for lithium batteries;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of a lithium battery cathode pressing mold during pressing;

[0027] Figure 4 for Figure 2 Schematic diagram of the structure of the push plate;

[0028] Figure 5 for Figure 2 A schematic diagram of the structure of the main mold. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] like Figures 1 to 5 As shown, a lithium battery positive electrode pressing mold in one embodiment of this application includes a main mold 200, which is fixed to a base 100. The main mold 200 has a cavity 201 with a top opening. It also includes a push plate 300, which is slidably connected to the top of the main mold 200. The push plate 300 is driven by a drive device 320 to cover or open the cavity 201.

[0031] According to this embodiment, after the raw material is poured into the mold cavity 201, the push plate 300 is used to push the material that is higher than the mold to flatten it, thereby venting the air in the mold cavity 201, reducing the air volume, controlling the push plate 300 to open the mold cavity 201 and then press it, reducing or avoiding the ejection of raw material, and improving the product production quality.

[0032] The base 100 is used to fix the main mold 200 and is fixed to the worktable of the hydraulic press. The bottom of the piston rod of the hydraulic press is fixed with a mold head that matches the mold cavity 201.

[0033] The base 100, main mold 200 and push plate 300 are all made of carbon steel, which has high strength and rigidity. The drive device 320 can be a hydraulic cylinder, pneumatic cylinder, electric cylinder, etc.

[0034] In one embodiment of this application, the main mold 200 is provided with a plurality of mold cavities 201, and the push plate 300 can completely cover all the mold cavities 201, enabling the simultaneous production of multiple lithium battery cathodes and improving production efficiency; moreover, the push plate 300 can flatten multiple mold cavities 201 at one time.

[0035] In one embodiment of this application, the push plate 300 is provided with through holes 310, which correspond one-to-one with the mold cavities 201, and the inner diameter of the through holes 310 is consistent with that of the mold cavities 201. After the push plate 300 is pushed, it can directly cover the top of the main mold 200 and expose the mold cavities 201, allowing for direct pressing without retraction, thus improving the production cycle. Moreover, it can shield the gap between the mold cavity 201 and the pressure rod, further reducing material ejection and improving accuracy.

[0036] In one embodiment of this application, the through hole 310 is a funnel shape facing upwards. This allows the through hole 310 to act as a guide, preventing collisions with the push plate 300.

[0037] In one embodiment of this application, a limiting protrusion 210 is provided on the side of the main mold 200 away from the push plate 300. The limiting protrusion 210 can limit the position of the push plate 300 and improve the alignment accuracy between the through hole 310 and the mold cavity 201.

[0038] In one embodiment of this application, the driving device 320 is a cylinder, and the push plate 300 has two sides with guide rods 330 arranged parallel to the cylinder. The guide rods 330 are slidably connected to the two sides of the main mold 200. The guide rods 330 serve to limit left and right movement, preventing the twisting of the push plate 300 from damaging the cylinder piston rod.

[0039] In one embodiment of this application, a receiving groove 202 is provided in the middle of the main mold 200, a cylinder is connected to the bottom of the receiving groove 202, and the mold cavity 201 is located on both sides of the receiving groove 202. A groove 301 matching the receiving groove 202 is provided on the push plate 300, and the width of the groove 301 is greater than the width of the cylinder. The arrangement of the receiving groove 202 and the groove 301 allows the cylinder to be completely inserted into the groove 301, which helps to reduce the width of the device and facilitates its installation on the operating table of a hydraulic press.

[0040] According to one embodiment of this application, the beneficial effect of using this lithium battery positive electrode pressing mold is that it can simultaneously flatten the raw materials in multiple mold cavities to reduce the residual air in the mold cavities, reduce the raw materials ejected due to internal high pressure during the pressing process, and improve the production quality of the product.

[0041] It should be noted that the above detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0044] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] In the detailed description above, reference has been made to the accompanying drawings, which form part of this document. In the drawings, similar symbols typically identify similar parts unless the context otherwise indicates otherwise. The illustrated embodiments described in the detailed specification, drawings, and claims are not intended to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lithium battery cathode tabletting die comprising a main die fixed to a base, said main die having a top open die cavity therein, characterised in that, The push flat plate is slidably connected to the top of the main mold, and is driven by a driving device to shield or open the mold cavity.

2. The lithium battery cathode tabletting die according to claim 1, characterized in that, The main mold is provided with a plurality of mold cavities, and the push flat plate can completely cover all the mold cavities.

3. The lithium battery cathode tabletting die according to claim 1, characterized in that, The push flat plate is provided with a through hole corresponding to the mold cavity, and the inner diameter of the through hole is consistent with the mold cavity.

4. The lithium battery cathode tablet press die of claim 3, wherein, The through hole is a horn-shaped opening arranged upward.

5. The lithium battery cathode tablet press die of claim 3, wherein, The main mold is provided with a limiting protrusion away from the push flat plate.

6. The lithium battery cathode tablet press die of claim 1, wherein, The driving device is a pneumatic cylinder, and the push flat plate is provided with a polished rod arranged in parallel with the pneumatic cylinder on both sides, and the polished rod is slidably connected to both sides of the main mold.

7. The lithium battery cathode tablet press die of claim 6, wherein, The main mold is provided with a receiving groove in the middle, the pneumatic cylinder is connected to the bottom of the receiving groove, the mold cavities are arranged on both sides of the receiving groove, the push flat plate is provided with a groove matched with the receiving groove, and the width of the groove is greater than the width of the pneumatic cylinder.

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