Hot-pressing apparatus
By setting guide holes and lubrication components on the layers and push plates of the hot press, the problem of uneven pressure caused by poor guiding effect is solved, and the uniformity of pressure and the compactness of the equipment are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CALB GROUP CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-10
AI Technical Summary
Existing hot pressing equipment suffers from poor guiding effect of the guide shaft, resulting in inconsistent pressure on the battery from adjacent layers.
Guide holes are provided on the shelf and push plate. The ratio of the radial cross-sectional area of the guide hole to the surface area of the shelf is 0.02-0.1. Lubrication components are also provided to ensure the stability and uniformity of the guide components.
This achieves uniform and consistent pressure of the battery in each layer of the channel, and avoids the guide components occupying too much space, thus reducing the overall size and manufacturing cost of the equipment.
Smart Images
Figure CN224480976U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of equipment for battery production, and in particular to a hot pressing device. Background Technology
[0002] Formation is a crucial step in the manufacturing process of lithium-ion batteries. It primarily involves the initial charging of newly assembled and electrolyte-filled batteries. The purpose is to activate the electrode materials, form a stable solid electrolyte interphase (SEI) film, and conduct preliminary performance evaluations of the battery. Formation is typically performed in specialized battery formation equipment. This equipment needs to simultaneously heat, pressurize, and charge multiple batteries. Conventional pouch battery formation equipment is divided into vertical and horizontal types. Horizontal formation equipment is commonly used in automated loading and unloading formation production lines, while vertical formation equipment is commonly used in manually loaded and unloaded formation production lines.
[0003] In related technologies, hot pressing equipment typically includes a fixed base, a power unit, and several layers. Batteries need to be placed on the layers one by one. The power unit is set on the fixed base and applies pressure to the layers, squeezing the layers together to provide pressure for the batteries between adjacent layers.
[0004] In existing hot pressing equipment, several layers are suspended on a guide shaft. When a power unit applies pressure to the layers, the layers slide along the guide shaft and press against each other to apply sufficient pressure to the battery between the layers. However, existing technology often results in inconsistent pressure on the battery from adjacent layers due to poor guiding effect of the guide shaft. Utility Model Content
[0005] The purpose of this invention is to provide a hot pressing device that solves the problem that the pressure on the battery by adjacent layers is inconsistent due to the poor guiding effect of the guide shaft when the hot pressing device performs hot pressing on the battery in the prior art. This hot pressing device can ensure the guiding stability of the guide component, improve the guiding effect, and ensure that the pressure applied to the battery in each layer channel is uniform.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A hot pressing device, comprising:
[0008] Base;
[0009] A push plate is provided between the push plate and the base, and several parallel and spaced shelves are provided between the push plate and the base. The push plate can move toward the base so that the push plate can apply pressure to the several shelves.
[0010] The guide structure includes at least two guide members, one end of which is connected to the base and the other end of which is connected to the base. Several of the shelf plates and the push plate are provided with guide holes for the guide members to slide through. The ratio of the sum of the radial cross-sectional areas of all the guide holes on a single shelf plate to the surface area of the single shelf plate is 0.02-0.1.
[0011] The beneficial effects of this utility model are:
[0012] The hot pressing equipment provided by this utility model provides guide holes for the sliding passage of guide components in several layers and push plates. The ratio of the sum of the radial cross-sectional areas of all guide holes on a single layer plate to the surface area of the single layer plate is 0.02-0.1. This ensures the guiding stability of the guide components in the guide holes, improves the guiding effect, and ensures that the pressure applied to the batteries in each layer plate channel is uniform. It also avoids the guide components in the guide holes occupying a large space and increasing the overall volume of the equipment. Attached Figure Description
[0013] Figure 1 This is a front view of the hot pressing equipment provided in this embodiment of the utility model;
[0014] Figure 2 This is a three-dimensional view of the hot pressing equipment provided in this embodiment of the utility model;
[0015] Figure 3 This is a schematic diagram of the assembly structure of the guide structure and the shelf provided in this embodiment of the utility model;
[0016] Figure 4 This is an assembly diagram of the lubrication assembly, guide, and shelf provided in an embodiment of the present invention;
[0017] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle;
[0018] Figure 6 This is a schematic diagram of the distribution of the lubrication components in a single layer plate according to an embodiment of the present invention;
[0019] Figure 7 This is an assembly diagram of the bushing and ball provided in an embodiment of the present utility model;
[0020] Figure 8 This is a schematic diagram showing the distribution of guide holes on a single layer plate provided in an embodiment of this utility model.
[0021] In the picture:
[0022] 100, Base; 200, Fixing seat; 300, Guide column; 400, Power assembly; 500, Push plate; 600, Shelf; 610, Guide hole; 700, Guide structure; 710, Guide component; 720, Lubrication assembly; 721, Bushing; 722, Ball bearing; 723, Clamp; 730, Support structure; 731, Retaining sleeve; 732, Support boss. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.
[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0026] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0027] like Figures 1 to 7As shown, this embodiment provides a hot pressing device, including a base 100, a fixed seat 200, a push plate 500, and a guide structure 700. A plurality of evenly distributed guide posts 300 are disposed between the fixed seat 200 and the base 100, and a power assembly 400 is mounted on the fixed seat 200. Preferably, an even number of guide posts 300 are provided, symmetrically distributed on both sides of the fixed seat 200 and the base 100, to stabilize the guide. Exemplarily, the power assembly 400 can be configured as a cylinder, a motor, or a push rod structure. A push plate 500 is disposed between the base 100 and the fixed seat 200 and slidably sleeved on the guide post 300. Several parallel and spaced shelf plates 600 are disposed between the push plate 500 and the base 100. The output end of the power component 400 can push the push plate 500 to move towards the base 100 so that the push plate 500 presses on the shelf plates 600. The guide structure 700 includes at least two guide members 710. One end of the guide member 710 is connected to the base 100 and the other end of the guide member 710 is connected to the fixed seat 200. Several shelf plates 600 and the push plate 500 are provided with guide holes 610 for the guide members 710 to slide through. The ratio of the sum of the radial cross-sectional areas of all guide holes 610 on a single shelf plate 600 to the surface area of a single shelf plate 600 is 0.02-0.1.
[0028] The hot pressing device provided in this embodiment provides guide holes 610 for the sliding passage of guide members 710 in several layers 600 and push plates 500. The ratio of the sum of the radial cross-sectional areas of all guide holes 610 on a single layer 600 to the surface area of a single layer 600 is 0.02-0.1. This ensures the guiding stability of the guide members 710 in the guide holes 610, improves the guiding effect, and ensures that the pressure applied to the batteries in the channels of each layer 600 is uniform. It also avoids the guide members 710 in the guide holes 610 occupying a large space and increasing the overall volume of the device.
[0029] Optionally, the guide structure 700 further includes a plurality of lubrication components 720. At least one guide hole 610 of the shelf 600 is provided with a lubrication component 720, and the guide member 710 can slidably pass through the lubrication component 720. By providing the lubrication component 720, during the compression process of the shelf 600, the lubrication component 720 can effectively reduce the friction between the guide member 710 and the shelf 600, so that when the shelf 600 is compressed and slides along the guide member 710, the pressure applied to the batteries in each shelf 600 channel is uniform.
[0030] In this embodiment, the lubrication assembly 720 includes a kit and multiple rolling elements. The kit is fixed to the layer plate 600, and the rolling elements are rolled and embedded in the inner wall of the kit. The multiple rolling elements are evenly distributed along the circumference of the kit. The guide member 710 passes through the kit and makes rolling contact with the rolling elements. The rolling elements effectively reduce the contact area between the guide member 710 and the kit, thereby reducing the contact friction between the guide member 710 and the kit. This ensures that the layer plate 600 slides smoothly along the guide member 710 and avoids inconsistent pressure applied to the batteries in the channels of each layer plate 600 due to excessive friction between the layer plate 600 and the guide member 710.
[0031] Optionally, the radial cross-section of the guide 710 is triangular, and the radial cross-section of the kit is triangular; or the radial cross-section of the guide 710 is square, and the radial cross-section of the kit is square; or the radial cross-section of the guide 710 is circular, and the radial cross-section of the kit is circular. In actual implementation, the radial cross-sectional shapes of the guide 710 and the kit can be set as needed, as long as the radial cross-sectional shape of the kit matches the radial cross-sectional shape of the guide 710.
[0032] Preferably, multiple rolling elements form a rolling element group, and multiple rolling element groups are arranged at intervals along the axial direction of the assembly. This arrangement can effectively improve the smoothness of the slide of the shelf 600 along the guide 710. For example, the rolling element group can be set to three, four, or five, or other numbers, as needed.
[0033] In this embodiment, the guide 710 has a rod-like structure, the kit is a bushing 721, and the rolling element is a ball bearing 722. The rod-like structure of the guide 710 facilitates manufacturing and reduces production costs. The lubrication assembly 720 includes the bushing 721, which can be a standard part, further reducing manufacturing costs. In other embodiments, the guide 710 can also be a cuboid structure, with a square radial cross-section for the kit. The radial cross-sectional shape of the kit matches the radial cross-sectional shape of the guide 710, and can be set as needed.
[0034] like Figure 5 As shown, in one possible implementation, the bushing 721 is fixed to the shelf 600 by clamps 723. The clamps 723 are tightly fitted onto the bushing 721. Two clamps 723 are provided, spaced apart and located on opposite sides of the shelf 600 along its thickness direction, and are connected to the shelf 600. Using independent clamps 723 to fix both ends of the bushing 721 simplifies the overall structure of the bushing 721 and reduces manufacturing costs.
[0035] Alternatively, in another possible implementation, a protruding ring is provided at one end of the outer peripheral surface of the bushing 721. The bushing 721 passes through the shelf 600, such that the protruding ring abuts against one side of the shelf 600 along the thickness direction. A clamp 723 is fitted at the other end of the outer peripheral surface of the bushing 721, and the clamp 723 abuts against the other side of the shelf 600 along the thickness direction, thus locking the bushing 721 to the shelf 600. When the bushing 721 is installed, the protruding ring abuts against one side of the shelf 600, improving the fixing stability and reliability of the bushing 721.
[0036] like Figure 7 As shown, optionally, the ball bearing 722 is embedded in the bushing 721 through the support structure 730. The support structure 730 includes a retaining sleeve 731 and a plurality of support bosses 732. The plurality of support bosses 732 are spaced apart on the inner wall of the bushing 721 and are evenly distributed along the circumference of the bushing 721. The end face of the support bosses 732 away from the bushing 721 is provided with an arc-shaped groove. The arc-shaped grooves of adjacent support bosses 732 form a mounting position. The ball bearing 722 is mounted in the mounting position. The retaining sleeve 731 is installed on the inner wall of the bushing 721. The retaining sleeve 731 is provided with a plurality of retaining holes. The plurality of retaining holes correspond one-to-one with the plurality of ball bearings 722. The inner side of the ball bearing 722 is located in the retaining hole, and the outer side of the ball bearing 722 contacts the arc-shaped groove. This design simplifies the installation of the ball bearing 722. The ball bearing 722 contacts the two support bosses 732 and the retaining sleeve 731 respectively, with the contacts arranged in a triangular pattern, resulting in good stability and smoother operation of the ball bearing 722.
[0037] Preferably, heat dissipation ribs are provided between adjacent support bosses 732, and the heat dissipation ribs are in clearance fit with the ball bearings 722. The heat dissipation ribs can conduct internal heat away, improve heat dissipation performance, and prevent the ball bearings 722 from overheating and deforming due to friction.
[0038] like Figure 3 and Figure 4 As shown, in actual implementation, optionally, at least four guide members 710 are provided, symmetrically distributed on both sides of the shelf 600. The guide holes 610 at both ends along a diagonal direction of the shelf 600 are slidably connected to the guide members 710 through lubrication components 720. This reduces the number of lubrication components 720, thereby reducing the cost of the guide structure 700 while still providing lubrication. In addition, the slidable connection between the guide holes 610 at both ends along a diagonal direction of the shelf 600 and the guide members 710 through lubrication components 720 ensures that the guide members 710 on both sides provide relatively uniform guidance to both sides of the shelf 600, which helps to ensure that the pressure applied to the batteries in the channels of each shelf 600 is uniform.
[0039] Furthermore, the diagonals of the lubrication components 720 on adjacent shelves 600 intersect the projection of the lubrication components 720 onto the push plate 500. This results in a staggered distribution of the lubrication components 720 installed on adjacent shelves 600. In the prior art, the spacing between adjacent shelves 600 is small, and it is often impossible to connect all adjacent shelves 600 to the guide member 710 using lubrication components 720. Provided that the spacing between adjacent shelves 600 meets the requirements, the staggered distribution of the lubrication components 720 installed on adjacent shelves 600 allows the use of standard bushings 721, thereby reducing manufacturing costs.
[0040] For example, see Figure 3 and Figure 6 Four guide members 710 are provided, with two guide members 710 on each side of the shelf 600. For the same shelf 600, one of the two guide members 710 on the same side is directly inserted through the shelf 600 at intervals, while the other guide member 710 is slidably connected to the shelf 600 via a lubrication assembly 720. The lubrication assemblies 720 on both sides are axially symmetrical with respect to the central axis of the shelf 600. Alternatively, by example, eight guide members 710 are provided, symmetrically distributed on both sides of the shelf 600. For the guide holes 610 on the same side of the same shelf 600, non-adjacent guide holes 610 are slidably connected to the guide members 710 via lubrication assemblies 720. All lubrication assemblies 720 on both sides are axially symmetrical with respect to the central axis of the shelf 600. This effectively ensures lubrication and reduces the cost of the guide structure 700. Furthermore, the lubrication assemblies 720 installed on adjacent shelves 600 are staggered. This allows the use of standard bushing 721 pieces, thereby reducing manufacturing costs. In other embodiments, the guide members 710 may be provided in six or ten or other quantities, as needed.
[0041] like Figure 8 As shown, in one possible implementation, at least four guide holes 610 are provided, and the at least four guide holes 610 are symmetrically distributed on both sides of the shelf 600. The line connecting the centers of adjacent guide holes 610 on the same side is parallel to the width direction of the shelf 600. This can improve the guiding effect.
[0042] Alternatively, in another possible implementation, at least four guide holes 610 are provided, and the at least four guide holes 610 are symmetrically distributed on both sides of the shelf 600. The line connecting the centers of adjacent guide holes 610 on the same side is set at an angle to the width direction of the shelf 600, so as to avoid stress concentration in the shelf 600 and improve the reliability of use.
[0043] Optionally, at least four guide holes 610 are provided, symmetrically distributed on both sides of the shelf 600. The minimum spacing L between adjacent guide holes 610 on the same side is greater than 50mm, preferably 60mm-80mm. If the value of L is too large, the spacing between adjacent guide holes 610 will be too large, resulting in excessive redundancy in the shelf 600, increasing manufacturing costs and wasting raw materials. If the value of L is too small, the spacing between adjacent guide holes 610 will be too small, resulting in poor structural strength of the shelf 600, and deformation is likely to occur at the guide holes 610, reducing the guiding effect.
[0044] Optionally, the diameter d of the guide hole 610 ranges from 30mm to 50mm. If the value of d is too large, the corresponding guide component 710 will have a larger volume, increasing manufacturing costs; if the value of d is too small, the guide area on the shelf 600 will be smaller, reducing the guiding effect.
[0045] In this embodiment, the minimum distance M between the guide hole 610 and the edge of the nearest layer 600 along the length direction is greater than 6mm, preferably 7mm-9mm. If the value of M is too large, the distance between the guide hole 610 and the edge of the nearest layer 600 along the length direction is too large, resulting in excessive redundancy in the layer 600, increasing manufacturing costs and wasting raw materials; if the value of M is too small, the distance between the guide hole 610 and the edge of the nearest layer 600 along the length direction is too small, resulting in poor structural strength of the layer 600, making it prone to deformation at the guide hole 610 and reducing the guiding effect.
[0046] Optionally, The range of M is 3.5-8. If the value of M is too large, the layer 600 will have too much redundancy, increasing manufacturing costs and wasting raw materials; if the value of M is too small, the structural strength of the layer 600 will be poor, and deformation will easily occur at the guide hole 610, reducing the guiding effect.
[0047] Optionally, the shelf 600 includes a heating area, which is spaced apart from the guide hole 610 to avoid the guide hole 610 affecting the heating treatment of the battery by the heating area.
[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 various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments 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 hot pressing device, characterized in that, include: Base (100); A push plate (500) is provided between the push plate (500) and the base (100) and a plurality of parallel and spaced shelves (600) are provided. The push plate (500) can move toward the base (100) so that the push plate (500) presses on the plurality of shelves (600). The guide structure (700) includes at least two guide members (710), one end of which is connected to the base (100). Several of the shelf plates (600) and the push plate (500) are provided with guide holes (610) for the guide members (710) to slide through. The ratio of the sum of the radial cross-sectional areas of all the guide holes (610) on a single shelf plate (600) to the surface area of a single shelf plate (600) is 0.02-0.
1.
2. The hot pressing equipment according to claim 1, characterized in that, The guide structure (700) further includes a plurality of lubrication components (720), and the lubrication components (720) are disposed in at least one of the guide holes (610) of the layer plate (600), and the guide (710) can slide through the lubrication components (720).
3. The hot pressing equipment according to claim 2, characterized in that, At least four guide members (710) are provided, and the at least four guide members (710) are symmetrically distributed on both sides of the layer plate (600). The guide holes (610) at both ends along a diagonal direction of the layer plate (600) are slidably connected to the guide members (710) through the lubrication assembly (720).
4. The hot pressing equipment according to claim 3, characterized in that, The diagonals of the lubrication components (720) provided on adjacent shelves (600) intersect the projection of the lubrication components on the pusher plate (500).
5. The hot pressing equipment according to claim 2, characterized in that, The lubrication assembly (720) includes a kit and a plurality of rolling elements. The kit is fixed to the layer plate (600), and the rolling elements are rolled and embedded in the inner wall of the kit. The plurality of rolling elements are evenly distributed along the circumference of the kit, and the guide (710) is inserted through the kit and rolls in contact with the rolling elements.
6. The hot pressing equipment according to claim 5, characterized in that, The radial cross-section of the guide (710) is triangular, and the radial cross-section of the kit is triangular; or the radial cross-section of the guide (710) is square, and the radial cross-section of the kit is square; or the radial cross-section of the guide (710) is circular, and the radial cross-section of the kit is circular.
7. The hot pressing equipment according to claim 5, characterized in that, The guide (710) has a rod-shaped structure, the kit is configured as a bushing (721), the rolling element is configured as a ball (722), the bushing (721) is fixed to the shelf (600) by a clamp (723), the clamp (723) is tightly fitted onto the bushing (721), there are two clamps (723), the two clamps (723) are spaced apart and located on both sides of the shelf (600) along the thickness direction, and the clamps (723) are connected to the shelf (600).
8. The hot pressing equipment according to claim 1, characterized in that, At least four guide holes (610) are provided, and the at least four guide holes (610) are symmetrically distributed on both sides of the layer plate (600). The line connecting the centers of adjacent guide holes (610) on the same side is parallel to the width direction of the layer plate (600).
9. The hot pressing equipment according to claim 1, characterized in that, At least four guide holes (610) are provided, and the at least four guide holes (610) are symmetrically distributed on both sides of the layer plate (600). The line connecting the centers of adjacent guide holes (610) on the same side is set at an angle to the width direction of the layer plate (600).
10. The hot pressing equipment according to claim 1, characterized in that, At least four guide holes (610) are provided, and the at least four guide holes (610) are symmetrically distributed on both sides of the layer plate (600), and the minimum distance L between adjacent guide holes (610) on the same side is greater than 50mm.
11. The hot pressing equipment according to claim 10, characterized in that, The minimum distance M between the guide hole (610) and the edge of the adjacent layer (600) along the length direction is greater than 6 mm.
12. The hot pressing equipment according to claim 11, characterized in that, The range is 3.5-8.
13. The hot pressing equipment according to claim 1, characterized in that, The layer (600) includes a heating area, which is spaced apart from the guide hole (610).
14. The hot pressing equipment according to claim 1, characterized in that, The diameter d of the guide hole (610) ranges from 30mm to 50mm.