Honeycomb graphitization material box

Abstract

The utility model provides a honeycomb graphitization material box. The honeycomb graphitization material box comprises a box body and a plurality of honeycomb boxes which are sequentially spliced in the box body, carbon plates are arranged on the side walls of the honeycomb boxes, the honeycomb boxes form up-down through hexagons through enclosing of the carbon plates, the bottoms of the honeycomb boxes are attached to the inner bottom face of the box body, and a cover plate is arranged on the top of each honeycomb box. According to the utility model, the honeycomb box is arranged in the box body, so that the unit cavities in the box body are optimized into hexagons from rectangles, the stress is uniform, the stability is high, the current transmission efficiency is improved, the heating efficiency of the graphitization furnace is improved, and the service life of the graphitization furnace is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type graphitization furnaces, in particular to a honeycomb graphitization material box. Background Art

[0002] New energy negative electrode materials are an important part of power batteries. With the development of new energy vehicles, the demand for negative electrode materials for batteries has also increased by leaps and bounds. The graphitization process is the most important link in the production of negative electrode materials. It is a process that makes full use of resistance heat to heat carbonaceous materials to 2300~3000℃, so that the carbon with amorphous chaotic layer structure is converted into an ordered graphite crystalline structure. At present, the market mainly uses Acheson graphitization furnace, internal heat series graphitization furnace and box-type graphitization furnace to complete graphitization production. Among them, the box-type graphitization furnace is widely used because of its large one-time furnace loading and low graphitization per ton powder cost. The box-type graphitization furnace in the prior art divides the entire furnace core into several equal volume chambers, and the negative electrode material is directly placed in the material box surrounded by graphite plates. Because the graphite plates are conductive, the material box itself heats up after power is turned on. The material box can achieve the purpose of heating the material while serving as a container for negative electrode materials.

[0003] At present, the material box structure of the box-type graphitization furnace, such as the box plate of the box-type graphitization furnace disclosed by the existing patent announcement number CN220322038U, and the material box structure of the box-type graphitization furnace disclosed by the patent publication number CN116086189A, has multiple unit cavities in the box body formed by splicing rectangular box structures. After power is turned on, the carbon plate is easily deformed or broken due to the thermal expansion of the carbon plate itself and the thermal expansion of the material, which affects the life of the material box. Utility Model Content

[0004] The utility model aims to provide a honeycomb graphitized material box with uniform force and high stability.

[0005] The technical solution of the utility model is: a honeycomb graphitized material box, comprising a box body and a plurality of honeycomb boxes sequentially spliced ​​in the box body, the side walls of the honeycomb boxes are carbon plates, the carbon plates enclose the honeycomb boxes to form a hexagon that penetrates from top to bottom, the bottom of the honeycomb boxes is in contact with the inner bottom surface of the box body, and a cover plate is provided on the top of each honeycomb box.

[0006] Preferably, the carbon plate comprises a first plate and a second plate, the thickness of the first plate is greater than that of the second plate, and in the hexagonal honeycomb box, two first plates are arranged diagonally, and the second plates are arranged on the remaining sides.

[0007] Preferably, n first plates are provided in the thickness direction of the box body, and m second plates are provided in the thickness direction of the box body, where n<m.

[0008] Preferably, the honeycomb graphitized material box further comprises a carbon column, and three slots are circumferentially provided on the carbon column, and the carbon plates are inserted into the slots.

[0009] Preferably, the height of the carbon column is consistent with the thickness of the box, and a plurality of the carbon plates are arranged in the height direction of the carbon column.

[0010] Preferably, the cover plate includes an upper plate and a lower plate which are fitted together, and the upper plate and the lower plate are staggered in at least one direction so that the lower plate extends out of the outer edge of the upper plate to form a first overlapping edge, and the upper plate extends out of the outer edge of the lower plate to form a second overlapping edge, and the second overlapping edges in adjacent cover plates overlap with the first overlapping edges.

[0011] Preferably, a heat preservation layer and an insulating layer are sequentially provided on the inner wall surface of the box body.

[0012] Preferably, the cover plate is hexagonal.

[0013] Compared with the related art, the beneficial effects of the utility model are as follows: a honeycomb box is arranged in the box body, so that the unit cavity in the box body is optimized from a rectangle to a hexagon, the force is evenly distributed, the stability is high, the current transmission efficiency is improved, the heating efficiency of the graphitization furnace is improved, and the service life of the graphitization furnace is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a honeycomb graphitized material box provided by the utility model with a portion of the honeycomb box without a cover plate;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure of a single honeycomb box;

[0016] Figure 3 for Figure 2 Schematic diagram of the structure of the carbon column in;

[0017] Figure 4 It is a structural schematic diagram of the carbon plate module;

[0018] Figure 5 is a schematic diagram of the structure of the cover plate;

[0019] Figure 6 This is the current density distribution diagram of the honeycomb carbon plate. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0021] like Figure 1 As shown, a honeycomb graphitized material box provided in this embodiment includes a box body 1, a honeycomb box 2, a cover plate 3, a thermal insulation layer 4 and an insulating layer 5.

[0022] The box body 1 has a thickness direction X, and a wiring port 11 is provided on one of the side walls for wiring and conducting electricity into the box body 1. A heat preservation layer 4 and an insulating layer 5 are provided on the inner wall surface of the box body 1 in sequence.

[0023] like Figure 2 As shown, the side wall of the honeycomb box 2 is a carbon plate 21, and the carbon plate 21 encloses the honeycomb box 2 to form a hexagon that is connected from top to bottom. The carbon plate 21 includes a first plate 211 and a second plate 212. The thickness of the first plate 211 is greater than the thickness of the second plate 212. In the hexagonal honeycomb box 2, two first plates 211 are arranged diagonally, and the remaining sides are all provided with the second plates 212. Adjacent carbon plates 21 are connected by carbon columns 22.

[0024] like Figure 3 As shown, the carbon column 22 is cylindrical, and three slots 221 are circumferentially provided thereon, wherein one slot 221 is adapted to the first plate 211 , and the other two slots 221 are adapted to the second plate 212 .

[0025] like Figure 1 As shown, the carbon column 22 is arranged vertically, and its height direction is consistent with the thickness direction X of the box body 1. Figure 2 As shown, a plurality of carbon plates 21 are inserted in the height direction of the carbon column 22, wherein the number of the first plates 211 is n, and the number of the second plates 212 is m, where n<m, and n and m are both natural numbers greater than 1. In this embodiment, n=2, and m=3. That is, the height of a single second plate 212 is less than the height of a single first plate 211.

[0026] like Figure 1 As shown, the honeycomb boxes 2 are sequentially spliced ​​in the box body 1. Due to the size limitation of the inner cavity of the box body 1, the honeycomb boxes 2 near the insulating layer 5 are disconnected, such as half of a triangle or hexagon formed after disconnection. Figure 1 As shown, the cover plate 3 is not provided at the disconnected portion of the honeycomb box 2 .

[0027] In order to facilitate the lifting and splicing of the honeycomb box 2, the carbon plates 21 and the carbon columns 22 can be assembled outside the box body 1 (i.e., offline) as shown in the following figure: Figure 4The carbon plate module shown in the figure includes two carbon columns 22, two second plates 212 and a first plate 211. One of the carbon columns 22 is located in the center, and the two second plates 212 and the first plate 211 are inserted in the carbon column 22, and the other carbon column 22 is inserted at the end of one of the second plates 212. During installation, a special lifting device is used to place the first carbon plate module in the box body 1, and then the second carbon plate module is lifted into the box body 1 and the second plate 212 of the second carbon plate module is inserted into the corresponding slot 221 of the carbon column 22 on the first carbon plate module, and then the third carbon plate module is lifted into the box body 1 and the first plate 211 of the third carbon plate module is inserted into the corresponding slot 221 of the carbon column 22 on the first carbon plate module, and the above is repeated until the box body 1 is filled, thereby forming a plurality of hexagonal honeycomb boxes 2, and the honeycomb boxes 2 are hexagonal unit cavities.

[0028] like Figure 1 As shown, the carbon plate 21 encloses the honeycomb box 2 to form a hexagon that penetrates from top to bottom, the bottom of the honeycomb box 2 is in contact with the inner bottom surface of the box body 1, and a cover plate 3 is provided on the top of each honeycomb box 2.

[0029] like Figure 5 As shown, the cover plate 3 includes an upper plate 31 and a lower plate 32 that are attached to each other. The upper plate 31 and the lower plate 32 are hexagonal with the same shape. The upper plate 31 and the lower plate 32 are staggered in at least one direction, so that the lower plate 32 extends out of the outer edge of the upper plate 31 to form a first overlapping edge 321. The upper plate 31 extends out of the outer edge of the lower plate 32 to form a second overlapping edge 311. Figure 1 As shown, the area of ​​the lower plate 32 is larger than the opening of the honeycomb box 2, so that the lower plate 32 is placed on the carbon plate 21. In two adjacent cover plates 3, the second overlap edge 311 on one cover plate 3 overlaps the first overlap edge 321 on the other cover plate 3 to facilitate conduction. When the upper plate 31 and the lower plate 32 are staggered in one direction on the horizontal plane, the first overlap edge 321 and the second overlap edge 311 are both one, and when they are staggered in both directions on the horizontal plane, the first overlap edge 321 and the second overlap edge 311 are both two.

[0030] like Figure 6 As shown, the current density of the hexagonal honeycomb box 2 is higher, and the carbon plate 21 can transmit current more effectively. In addition, the carbon powder in the honeycomb graphitized material box has a higher heating efficiency and a more uniform heating.

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A honeycomb graphitization material box, comprising a box body, characterized in that: It also includes a plurality of honeycomb boxes sequentially spliced ​​in the box body, wherein the side walls of the honeycomb boxes are carbon plates, and the carbon plates enclose the honeycomb boxes to form a hexagon that passes through from top to bottom, the bottom of the honeycomb boxes is in contact with the inner bottom surface of the box body, and each honeycomb box is provided with a cover plate on the top.

2. The honeycomb graphitization material box according to claim 1, characterized in that: The carbon plate comprises a first plate and a second plate, the thickness of the first plate is greater than that of the second plate, and in the hexagonal honeycomb box, two first plates are arranged diagonally, and the second plates are arranged on the remaining sides.

3. The honeycomb graphitization material box according to claim 2, characterized in that: There are n first plates in the thickness direction of the box body, and there are m second plates in the thickness direction of the box body, where n<m.

4. The honeycomb graphitization material box according to claim 1, characterized in that: It also includes a carbon column, on which three slots are circumferentially arranged, and the carbon plates are inserted into the slots.

5. The honeycomb graphitization material box according to claim 4, characterized in that: The height of the carbon column is consistent with the thickness of the box, and a plurality of the carbon plates are arranged in the height direction of the carbon column.

6. The honeycomb graphitization material box according to claim 1, characterized in that: The cover plate includes an upper plate and a lower plate which are fitted together, and the upper plate and the lower plate are staggered in at least one direction so that the lower plate extends out of the outer edge of the upper plate to form a first overlapping edge, and the upper plate extends out of the outer edge of the lower plate to form a second overlapping edge, and the second overlapping edges in adjacent cover plates overlap with the first overlapping edges.

7. The honeycomb graphitization material box according to claim 1, characterized in that: A heat preservation layer and an insulating layer are arranged in sequence on the inner wall surface of the box body.

8. The honeycomb graphitization material box according to claim 1, characterized in that: The cover plate is hexagonal.

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