A hot plate, a hot pressing assembly and a laminating machine

Abstract

The utility model belongs to the field of lamination equipment, especially relates to a hot pressing plate, hot pressing subassembly and laminating machine for laminating structure hot pressing is polar core, laminating structure is formed by the alternative lamination of multiple negative pole piece, multiple positive pole piece and multiple diaphragm, the middle part of hot pressing plate is provided with the placement area, be provided with a plurality of through -hole in the placement area, the through -hole is along first direction and penetrates hot pressing plate, the placement area has the containing area of placing laminating structure, the containing area has a plurality of corners, every the corner and a the through -hole correspond, the containing area's any corner passes through and covers the partial area of the top end opening of corresponding through -hole, the utility model can reduce the extrusion deformation to the laminated core.

Description

Technical Field

[0001] This utility model belongs to the field of lamination equipment, and particularly relates to a hot press plate, a hot press assembly and a lamination machine. Background Technology

[0002] The existing hot pressing mechanism of the stacking machine usually uses guide posts to pre-clamp the stacked cores that have completed the stacking process of electrode sheets. However, the guide posts usually clamp the middle of the stacked core in the length direction or the middle of the width direction, so that the pressing position of the guide posts is located inside the stacked core, which can easily cause the electrode sheets to bend and result in poor alignment of the cells. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that the clamping position of the existing guide post is located in the inner cavity of the stacked core, which easily causes the electrode sheet to bend. This utility model provides a hot press plate, a hot press assembly and a stacking machine.

[0004] To address the aforementioned issues, this utility model provides a hot press plate for hot pressing a laminated structure into an electrode core. The laminated structure is composed of multiple negative electrode sheets, multiple positive electrode sheets, and multiple diaphragms stacked alternately. A placement area is provided in the middle of the hot press plate, and multiple through holes are provided in the placement area. The through holes penetrate the hot press plate along the first direction.

[0005] The placement area has a receiving area for placing the stacked structure, and the receiving area has multiple corners, each corner corresponding to a through hole;

[0006] Any corner of the receiving area passes through and covers a portion of the top opening of the corresponding through hole.

[0007] Optionally, any corner of the receiving area covers at least half of the top opening of the corresponding through hole.

[0008] Optionally, the receiving area is a rectangular area, and four through holes are provided.

[0009] Optionally, any corner of the receiving area may cover half of the top opening of the corresponding through hole.

[0010] Optionally, the diameter of the through hole is r, and four through holes are arranged in an array along a second direction and a third direction; in the second direction, the center distance between two adjacent through holes is a; in the third direction, the center distance between two adjacent through holes is b, and a < b; the length of the receiving area along the second direction is c, and the length of the receiving area along the third direction is d; where the units of r, a, b, c, and d are mm;

[0011] a = c - 4r - 2mm; b = d - 4r - 1mm;

[0012] Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

[0013] On the other hand, this utility model embodiment provides a hot pressing assembly, including a guide column and the aforementioned hot pressing plate. Two hot pressing plates are provided, and the two hot pressing plates are arranged opposite to each other along the first direction. The multiple through holes on the two hot pressing plates correspond one-to-one, and the two corresponding through holes are coaxially arranged.

[0014] The guide post is provided in multiple ways. Each guide post is movably disposed in a through hole along the axial direction of the through hole. Two guide posts opposite each other along the first direction are used to pre-clamp the stacked structure.

[0015] On the other hand, this utility model embodiment provides a stacking machine, including the hot pressing assembly described above.

[0016] This utility model provides a hot press plate, hot press assembly, and stacking machine. Unlike existing technologies, the through holes in this embodiment are positioned directly opposite each corner of the stacked structure. Taking a common square stacked structure as an example, the four through holes are located at each corner of the square stacked structure, allowing the guide posts to clamp the stacked structure from the four corners and perform hot pressing to form a stacked core. This arrangement helps to avoid squeezing the width or length of the stacked core during pre-clamping of the stacked structure, preventing contact with the center of the stacked core and thus reducing the occurrence of cell bending. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of a hot press plate provided in one embodiment of the present utility model;

[0019] Figure 2 This is a top view of a hot press plate provided in one embodiment of the present invention.

[0020] The reference numerals in the accompanying drawings are as follows:

[0021] 1. Hot press plate; 11. Through hole; 12. Receiving area. Detailed Implementation

[0022] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] 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.

[0025] like Figure 1 and Figure 2 As shown, one embodiment of this utility model provides a hot press plate for hot pressing a laminated structure into an electrode core. The laminated structure is formed by alternating layers of multiple negative electrode plates, multiple positive electrode plates, and multiple diaphragms. A placement area is provided in the middle of the hot press plate 1, and multiple through holes 11 are provided in the placement area. The through holes 11 penetrate the hot press plate 1 along a first direction. The placement area has a receiving area 12 for placing the laminated structure. The shape of the receiving area 12 is consistent with the shape of the laminated structure. The receiving area 12 has multiple corners, and each corner corresponds to a through hole 11. Any corner of the receiving area 12 passes through and covers a portion of the top opening of the corresponding through hole 11.

[0026] During hot pressing of the stacked core, guide posts within the through holes 11 on the hot pressing plate 1 support the stacked structure. These guide posts, along with those on another hot pressing plate 1, hot press the stacked structure from opposite sides. Unlike existing technologies, in this embodiment, the through holes 11 are positioned directly opposite each corner of the stacked structure. Taking a common square stacked structure as an example, the receiving area 12 is rectangular, with the four through holes 11 located at each corner of the square stacked structure. This allows the guide posts to clamp the stacked structure from its four corners, hot pressing the structure to form the stacked core. This arrangement helps to prevent compression in the width or length direction of the stacked core during pre-clamping, avoiding contact with the center of the stacked core and thus reducing the occurrence of cell bending.

[0027] In one embodiment, any corner of the receiving area 12 covers at least half of the top opening of its corresponding through hole 11. In this embodiment, the receiving area 12 covers at least half but not all of the top opening of the through hole 11, or the receiving area 12 completely covers the top opening of the through hole 11. That is, the area of ​​the receiving area 12 covering the top opening of the through hole 11 is 1 / 2 to 1. This increases the clamping area of ​​the guide post on the stacked structure and improves the stability during the clamping process.

[0028] In one embodiment, any corner of the receiving area 12 covers half of the top opening of its corresponding through hole 11.

[0029] In one embodiment, the diameter of the through hole 11 is r, and four through holes 11 are arranged in an array along the second direction and the third direction; in the second direction, the center distance between two adjacent through holes 11 is a; in the third direction, the center distance between two adjacent through holes 11 is b, and a < b; the length of the receiving area 12 along the second direction is c, and the length of the receiving area 12 along the third direction is d; where the units of r, a, b, c, and d are mm;

[0030] Where r, a, b, c, and d satisfy the following relationship:

[0031] a = c - 4r - 2mm; b = d - 4r - 1mm;

[0032] In this embodiment, the first direction, the second direction, and the third direction are all perpendicular to each other. The first direction is the thickness direction of the electrode, the second direction is the width direction of the electrode, and the third direction is the length direction of the electrode.

[0033] The center distance between two adjacent through holes 11 is related to the length and width of the electrode sheets in the stacked core. In this embodiment, the value of a is the width of the electrode sheet - 2 times the diameter of the through hole 11 - 2 mm, and the value of b is the length of the electrode sheet - 2 times the diameter of the through hole 11 - 1 mm. This arrangement ensures that any corner of the receiving area 12 covers at least half of the top opening of its corresponding through hole 11, and ensures that the through holes 11 are located at the four corners of the receiving area 12.

[0034] In addition, this utility model embodiment provides a hot pressing assembly, including a guide post and the aforementioned hot pressing plate 1. Two hot pressing plates 1 are provided, and the two hot pressing plates 1 are arranged opposite each other along a first direction. The multiple through holes 11 on the two hot pressing plates 1 correspond one-to-one, and the two corresponding through holes 11 are coaxially arranged. In actual production, the hot pressing plates 1 are arranged opposite each other along the vertical direction. The hot pressing plate 1 located above is called the upper hot pressing plate 1, and the hot pressing plate 1 located below is called the lower hot pressing plate 1. The receiving area 12 of the upper hot pressing plate 1 and the receiving area 12 of the lower hot pressing plate 1 are directly opposite each other, clamping the stacked structure from the upper and lower sides. The four through holes 11 of the upper hot pressing plate 1 and the four through holes 11 of the lower hot plate are directly opposite each other, so that the through holes 11 of the upper hot pressing plate 1 and the corresponding through holes 11 of the lower hot plate clamp one corner of the stacked structure, until the four corners of the stacked structure are clamped.

[0035] Multiple guide posts are provided, each guide post is movably disposed in a through hole 11 along a third direction, and two guide posts opposite each other along the first direction are used to pre-clamp the stacked structure.

[0036] In addition, this utility model embodiment provides a stacking machine, including the hot pressing assembly described above.

[0037] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A hot-pressing plate for hot-pressing a laminated structure into an electrode core, said laminated structure being formed by alternating layers of multiple negative electrode plates, multiple positive electrode plates, and multiple separators, characterized in that, The hot press plate (1) has a placement area in the middle, and a plurality of through holes (11) are provided in the placement area. The through holes (11) penetrate the hot press plate (1) along a first direction. The placement area has a receiving area (12) for placing the stacked structure, the receiving area (12) has multiple corners, each corner corresponding to a through hole (11); Any corner of the receiving area (12) passes through and covers a portion of the top opening of the corresponding through hole (11).

2. The hot press plate according to claim 1, characterized in that, Any corner of the receiving area (12) covers at least half of the top opening of the corresponding through hole (11).

3. The hot press plate according to claim 1, characterized in that, The accommodating area (12) is a rectangular area, and four through holes (11) are provided.

4. The hot press plate according to claim 1, characterized in that, Any corner of the receiving area (12) covers half of the top opening of the corresponding through hole (11).

5. The hot press plate according to claim 1, characterized in that, The diameter of the through hole (11) is r, and four through holes (11) are arranged in an array along the second direction and the third direction; in the second direction, the center distance between two adjacent through holes (11) is a; in the third direction, the center distance between two adjacent through holes (11) is b, a < b; the length of the receiving area (12) along the second direction is c, and the length of the receiving area (12) along the third direction is d; where the units of r, a, b, c, and d are mm; a = c - 4r - 2mm; b = d - 4r - 1mm; Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

6. A hot-pressing assembly, characterized in that, Includes guide posts and hot press plates (1) as described in any one of claims 1-5, wherein two hot press plates (1) are provided, the two hot press plates (1) are arranged opposite to each other along the first direction, and the multiple through holes (11) on the two hot press plates (1) correspond one-to-one, and the two corresponding through holes (11) are coaxially arranged; The guide post is provided in multiple ways. Each guide post is movably disposed in a through hole (11) along the axial direction of the through hole. Two guide posts opposite each other along the first direction are used to pre-clamp the stacked structure.

7. A stacking machine, characterized in that, Includes the hot-pressing assembly as described in claim 6.

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