Pole piece feeding device
By designing an electrode feeding device with a stacked heating plate and pressure plate structure, the problems of long baking time and electrode sticking for large-size electrodes were solved, achieving uniform heating and efficient production of electrodes.
Patent Information
- Application Number
- CN202520537400.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-25
AI Technical Summary
In the battery electrode processing, large-size electrodes take too long to dry, and after baking, the electrodes are prone to sticking together, which increases the risk of overlapping in the stacking process and reduces production efficiency.
Design an electrode feeding device that uses a stacked structure of multiple heating plates and pressure plates, with electrode sheets placed between adjacent pressure plates to form a multi-layer heating layer, thus preventing electrode sheets from sticking together. A robotic arm is used to alternately place the electrode sheets and pressure plates to ensure that each electrode sheet is heated evenly and to shorten the baking time.
It effectively avoids the phenomenon of electrode sticking, shortens the time for electrode baking to the target moisture content, improves production efficiency, and reduces the risk of electrode bending and breakage.
Smart Images
Figure CN223836235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, and in particular to an electrode feeding device. Background Technology
[0002] In the processing of battery electrodes, a clip structure is typically used to transport the electrodes. For example, in the electrode stacking process, the positive or negative electrode is transported using a combination of a clip structure and a robotic arm. Before electrode stacking, the electrodes need to be dried to the target moisture content; however, this process introduces several problems. Utility Model Content
[0003] Because the drying process requires prolonged negative pressure baking of the electrode sheets, it is time-consuming and reduces the production efficiency of the electrode sheets. In addition, when the electrode sheets are loaded into the magazine structure by vacuum suction cup of the robotic arm after baking, the electrode sheets are prone to sticking together, especially large-sized electrode sheets (e.g., electrode sheets larger than 500*200mm). The probability of electrode sheet sticking is even higher, which greatly increases the risk of overlapping caused by the direct stacking of multiple positive / negative electrode sheets in the stacking process.
[0004] In order to overcome the shortcomings and deficiencies of the above-mentioned technologies, the purpose of this utility model is to provide a feeding device that solves the problems of large-size electrode sheet sticking and the problem of excessive time spent baking the electrode sheet to the target moisture content, thereby improving production efficiency.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] An electrode feeding device includes a support and multiple pressure plates, wherein the multiple pressure plates are stacked within a space defined by the support, the pressure plates are heating plates, and the space between adjacent pressure plates is used to place electrode sheets.
[0007] In one embodiment, along the stacking direction of the pressure plate, the projection area of the electrode overlaps with the projection area of the pressure plate, or the projection area of the electrode is located within the projection area of the pressure plate.
[0008] In one embodiment, the bracket includes at least two crossbars and three support members, the support members enclosing and defining the outer periphery of the pressure plate, and the support members being connected to an adjacent support member via at least one of the crossbars.
[0009] In one embodiment, the bracket further includes a base plate, and the bottom end of each of the supporting members is connected to the base plate.
[0010] In one embodiment, the pressure plate includes a pressure plate side and a pressure plate body, and the pressure plate side is provided on at least one side of the pressure plate body; the electrode is placed between adjacent pressure plate bodies, and the pressure plate side is used to connect to an external power supply.
[0011] In one embodiment, when the pressure plate body is provided with the pressure plate side only on the same side, a plurality of the pressure plate side located on the same side are stacked and adjacent pressure plate side are in contact with each other, and the electrode includes an electrode tab, which is provided on a side different from where the pressure plate side is provided.
[0012] In one embodiment, a gap for placing the electrode is provided between adjacent pressure plate bodies, the thickness of the side of the pressure plate is T1, the thickness of the pressure plate body is T2, T1 > T2; the width of the gap is W1, W1 = T1 - T2.
[0013] In one embodiment, 200 μm ≤ T2 ≤ 350 μm, and / or, 100 μm ≤ W1 ≤ 250 μm.
[0014] In one embodiment, the electrode feeding device further includes a pressure block, which is connected to the sides of a plurality of stacked pressure plates and is connected to an external power supply.
[0015] In one embodiment, a plurality of the pressure plates are detachably disposed within the space defined by the bracket.
[0016] The advantages of this invention are as follows: multiple pressure plates are heating plates, and the stacked pressure plates form multiple heating layers. The electrode sheets to be heated are placed between adjacent pressure plates. The electrode sheets are separated and heated by the multi-layered pressure plates, which avoids the phenomenon of electrode sheets sticking together. Moreover, each electrode sheet can fully contact the heating plate, which shortens the time for the electrode sheet to be baked to the target moisture content and improves production efficiency. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the electrode feeding device according to an embodiment of the present invention when electrode sheets are installed;
[0019] Figure 2 This is a schematic diagram of the electrode feeding device according to another embodiment of the present invention when electrode sheets are installed;
[0020] Figure 3 This is a schematic diagram of the electrode feeding device according to another embodiment of the present invention when electrode sheets are installed;
[0021] Figure 4This is a schematic diagram of the electrode feeding device according to another embodiment of the present invention when electrode sheets are installed;
[0022] Figure 5 yes Figure 3 Top view;
[0023] Figure 6 This is a schematic diagram of the structure of a bracket according to an embodiment of the present invention;
[0024] Figure 7 This is a structural view of a bracket according to another embodiment of the present invention;
[0025] Figure 8 This is a structural view of a bracket according to another embodiment of the present invention;
[0026] Figure 9 This is a schematic diagram of the structure of the pressure plate of this utility model;
[0027] Figure 10 This is a schematic diagram of the stacked pressure plate and electrode sheet according to an embodiment of the present invention;
[0028] Figure 11 This is a schematic diagram of the stacked pressure plate and electrode sheet structure of another embodiment of this utility model.
[0029] In the diagram: 1. Pressure plate; 11. Side of pressure plate; 12. Pressure plate body; 2. Bracket; 21. Support component; 22. Crossbar; 23. Base plate; 3. Pressure block; 4. Gap; 5. Placement slot; 6. Electrode; 61. Electrode tab. Detailed Implementation
[0030] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., 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. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0032] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, 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.
[0033] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.
[0034] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0035] This utility model provides an electrode feeding device, such as... Figures 1 to 5 As shown, it includes a support 2 and multiple pressure plates 1. The multiple pressure plates 1 are stacked and arranged in the space defined by the support 2. The pressure plates 1 are heating plates, and single electrode sheets 6 are placed between adjacent pressure plates 1.
[0036] In this embodiment, multiple pressure plates 1 are all heating plates. The stacked pressure plates 1 form multiple heating layers. The electrode sheets 6 to be heated are placed between adjacent pressure plates 1. The electrode sheets 6 are separated and heated by the multi-layered pressure plates 1, avoiding the phenomenon of electrode sheets 6 sticking together. Each electrode sheet 6 can fully contact the pressure plate 1 (heating plate), shortening the time for the electrode sheet 6 to be baked to the target moisture content and improving production efficiency. At the same time, the multiple stacked pressure plates 1 are limited by the bracket 2 to prevent the electrode sheets 6 from bending and breaking due to misalignment between the pressure plates 1 during the stacking process.
[0037] As one implementation method, such as Figures 1 to 5 As shown, along the stacking direction of the pressure plate 1, the projection area of the electrode 6 overlaps with the projection area of the pressure plate 1, or the projection area of the electrode 6 is located within the projection area of the pressure plate 1, so as to ensure that the edges and corners of the electrode 6 can be pressed by the pressure plate 1, to avoid bending and warping of the electrode 6 around its perimeter during the heating process, and to ensure that the electrode 6 is heated evenly and has a flat surface during the heating process.
[0038] As one implementation method, such as Figures 5 to 8 As shown, the bracket 2 includes at least two crossbars 22 and three support members 21. The support members 21 enclose and define the outer periphery of the pressure plate 1. The support member 21 is connected to an adjacent support member 21 through at least one crossbar 22.
[0039] Specifically, in this embodiment, both the pressure plate 1 and the electrode 6 are rectangular or square. To limit the pressure plate 1, at least three corners of the pressure plate 1 can be restricted, thus three or four support members 21 can be provided to limit the pressure plate 1; for example... Figure 8 As shown, when there are three support members 21, the three support members 21 are located at the three corners of the pressure plate 1. Along the outer periphery of the pressure plate 1, the three support members 21 are fixedly connected to form a stable bracket 2 by two crossbars 22; as shown Figure 6 and Figure 7 As shown, when there are four support members 21, the four support members 21 are located at the four corners of the pressure plate 1, and along the outer periphery of the pressure plate 1, are three crossbars 22 (such as...). Figure 6 (as shown) or four crossbars 22 (as shown) Figure 7 (As shown) Two adjacent support members 21 are connected to form a stable bracket 2; multiple pressure plates 1 are stacked within the space defined by the support members 21. The support members 21 are L-shaped to limit the adjacent right-angled sides of the pressure plates 1.
[0040] As one implementation method, such as Figure 1 As shown, the support 2 also includes a base plate 23, and the bottom ends of each support member 21 are fixedly or detachably connected to the base plate 23, making the structure of the support 2 more stable. By setting the base plate 23, during the stacking process, the electrode 6 can be placed on the base plate 23 of the support 2 first, and then the pressure plate 1 and the electrode 6 can be placed alternately in sequence to form a stacking structure in which the electrode 6 and the pressure plate 1 are alternately arranged; as shown Figure 2 and Figure 3 As shown, at this time, the support 2 does not have a base plate 23. The bottom of the support 2 can first have a pressure plate 1 placed on it, and then the electrode 6 and pressure plate 1 can be placed alternately to form a stacked structure where pressure plate 1 and electrode 6 are alternately arranged. As one implementation method, such as... Figure 4 As shown, when the support 2 is not equipped with a base plate 23, a pressure plate 1 or a top plate (not shown) can be installed on the top of the stacked structure. Figure 3 A top plate is provided at the top to press down the electrode 6 installed at the top, preventing the top electrode 6 from curling.
[0041] As one implementation method, such as Figure 1 and Figure 9 As shown, the pressure plate 1 includes a pressure plate side 11 and a pressure plate body 12. At least one side of the pressure plate body 12 is provided with a pressure plate side 11. The adjacent pressure plate bodies 12 are used to place the electrode 6. The pressure plate side 11 is used to connect to an external power supply to heat the pressure plate 1.
[0042] As one implementation method, such as Figures 1 to 4As shown, when the pressure plate body 12 is provided with pressure plate side 11 only on the same side, multiple pressure plate side 11 located on the same side are stacked and adjacent pressure plate side 11 are in contact with each other, so that multiple pressure plate side 11 of each pressure plate 1 are electrically connected to each other. When one pressure plate side 11 is energized, the other pressure plate side 11 can also be energized, so as to reduce the number of external power supply settings.
[0043] As one implementation method, such as Figure 3 As shown, the electrode 6 includes an electrode tab 61, which is located on a side different from the side of the pressure plate 11. Specifically, the electrode tab 61 is located on a side adjacent to or opposite to the side of the pressure plate 11, so as to avoid interference between the electrode tab 61 and the side of the pressure plate 11.
[0044] As one implementation method, such as Figure 1 and Figure 2 As shown, a gap 4 for placing electrode plates 6 is provided between adjacent pressure plate bodies 12 to avoid the situation where, if there is no gap 4 between the pressure plate bodies 12, the electrode plates 6 will be placed between the two pressure plate bodies 12, causing the adjacent pressure plate sides 11 to separate and become unable to be electrically connected.
[0045] As one implementation method, such as Figure 1 and Figure 10 As shown, the thickness of the pressure plate side 11 is T1, and the thickness of the pressure plate body 12 is T2, where T1 > T2; the width of the gap 4 is W1, where W1 = T1 - T2. In this embodiment, by setting the thickness of the pressure plate side 11 to be greater than the thickness of the pressure plate body 12, a gap 4 for placing the electrode 6 is formed between two adjacent pressure plate bodies 12. The thickness of the electrode 6 is T3, where T3 ≤ W1. As one implementation method, T3 = W1, allowing the electrode 6 to fully contact the pressure plate 1, thus improving the efficiency of heating the electrode 6. Of course, as... Figure 11 As shown, when T1 = T2, a placement groove 5 can also be opened on the pressure plate body 12. The placement groove 5 is equivalent to the gap 4 for placing the electrode 6. The depth of the placement groove 5 is T4, T3 ≤ T4. In one embodiment, T3 = T4.
[0046] As one implementation, 200μm≤T2≤350μm, further 250μm≤T2≤350μm, and even further T2=300μm; and / or, 100μm≤W1≤250μm, as one implementation, 150μm≤W1≤250μm, and even further W1=180μm.
[0047] As one implementation method, such as Figure 1 and Figure 2As shown, the electrode feeding device also includes a pressure block 3, which is connected to the sides 11 of multiple stacked pressure plates. The pressure block 3 is conductive and connected to an external power supply. The pressure block 3 can be disposed on the upper surface of the sides 11 of the stacked pressure plates for easy connection to an external power supply.
[0048] In one implementation, multiple pressure plates 1 are detachably disposed within the space defined by the bracket 2, so that multiple pressure plates 1 and multiple electrode plates 6 can be alternately placed in the bracket 2.
[0049] In one implementation, the pressure plate 1 is made of metal, which is conductive and can heat the electrode 6.
[0050] In one embodiment, the electrode 6 is disposed in the gap 4 between adjacent pressure plate bodies 12, so that the pressure plate bodies 12 and the electrode 6 are alternately stacked in the space defined by the support 2.
[0051] The electrode feeding device of this invention solves the problem of electrode sticking when feeding via a spring clip structure, and also shortens the time required for electrode 6 to reach the target moisture content during baking. Specifically, this invention sets up multiple layers of rigid (e.g., made of metal, with a thickness slightly greater than the electrode 6) detachable pressure plates 1 within a conventional spring clip structure. The side 11 of the pressure plate 1 is thickened (e.g., the increased thickness is the same as the electrode 6 thickness). Thus, a robotic arm (such as a robotic arm with a vacuum suction cup) can alternately place the electrode 6 and pressure plate 1 into the support 2. When fully loaded, the side 11 of the pressure plate is pressed by a voltage-conducting block 3, and an external power supply is connected to heat each layer of metal pressure plate 1, achieving uniform heating of the electrode 6 and shortening the time required for electrode 6 to reach the target moisture content. At the same time, the pressure plate 1 acts as a barrier between the electrode 6, preventing the electrode 6 from sticking after baking. Furthermore, the cooling rate of the electrode 6 is significantly accelerated after heating, improving production efficiency.
[0052] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present utility model. These are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An electrode feeding device, characterized in that, It includes a support (2) and multiple pressure plates (1), the multiple pressure plates (1) are stacked in the space defined by the support (2), the pressure plates (1) are heating plates, and the adjacent pressure plates (1) are used to place electrode sheets (6).
2. The electrode feeding device as described in claim 1, characterized in that, Along the stacking direction of the pressure plate (1), the projection area of the electrode (6) overlaps with the projection area of the pressure plate (1), or the projection area of the electrode (6) is located within the projection area of the pressure plate (1).
3. The electrode feeding device as described in claim 1, characterized in that, The bracket (2) includes at least two crossbars (22) and three support members (21), the support members (21) enclosing and defining the outer periphery of the pressure plate (1), and the support members (21) are connected to an adjacent support member (21) by at least one of the crossbars (22).
4. The electrode feeding device as described in claim 3, characterized in that, The bracket (2) also includes a base plate (23), and the bottom end of each of the support members (21) is connected to the base plate (23).
5. The electrode feeding device as described in claim 1, characterized in that, The pressure plate (1) includes a pressure plate side (11) and a pressure plate body (12). The pressure plate side (11) is provided on at least one side of the pressure plate body (12). The electrode (6) is placed between adjacent pressure plate bodies (12), and the pressure plate side (11) is used to connect to an external power supply.
6. The electrode feeding device as described in claim 5, characterized in that, When the pressure plate body (12) is provided with the pressure plate side (11) only on the same side, the multiple pressure plate side (11) located on the same side are stacked and arranged, and the adjacent pressure plate side (11) are in contact with each other. The electrode (6) includes an electrode tab (61), which is located on a side different from the side where the pressure plate side (11) is located.
7. The electrode feeding device as described in claim 6, characterized in that, A gap (4) for placing the electrode (6) is provided between adjacent pressure plate bodies (12). The thickness of the side (11) of the pressure plate is T1, and the thickness of the pressure plate body (12) is T2, T1 > T2; the width of the gap (4) is W1, W1 = T1 - T2.
8. The electrode feeding device as described in claim 7, characterized in that, 200μm≤T2≤350μm, and / or, 100μm≤W1≤250μm.
9. The electrode feeding device as described in claim 6, characterized in that, The electrode feeding device also includes a pressure block (3), which is connected to the sides (11) of the stacked pressure plates and is connected to an external power supply.
10. The electrode feeding device according to any one of claims 1-9, characterized in that, Multiple pressure plates (1) are detachably disposed within the space defined by the bracket (2).