A kind of sagger for sintering lithium battery positive electrode material

Abstract

The utility model discloses a kind of for sintering lithium battery positive electrode material's sagger, comprising: shell;The upper surface of shell is provided with containing cavity, shell top is provided with several flow-through grooves, the bottom inner wall of several flow-through grooves is provided with the ventilation groove that penetrates, the setting outer wall of shell is provided with heat dissipation unit, heat dissipation unit includes: several first heat dissipation dry way and several second heat dissipation dry way, several first heat dissipation dry way and several second heat dissipation dry way cross distribution is X, several reinforcing bars are fixedly connected between the inner wall of both sides of ventilation groove;Through several flow-through grooves of shell top and the ventilation groove that bottom penetrates, air flow channel is formed;When sagger is used for sintering lithium battery positive electrode material, hot air can enter flow-through groove by ventilation groove, the flowability of air is enhanced, so that the air in sagger interior can be fully circulated, guarantee the stability and uniformity of positive electrode material sintering environment, help to improve the sintering quality of positive electrode material.

Description

Technical Field

[0001] This utility model relates to the technical field of saggers, and more particularly to a sagger for sintering lithium battery cathode materials. Background Technology

[0002] In the preparation of lithium-ion high-nickel cathode materials, the raw materials need to be loaded into saggers and then placed in a sintering furnace for high-temperature calcination under oxygen-filled conditions. Currently, the most widely used saggers are square saggers with uniform outer wall thickness. The saggers are placed tightly side by side inside the furnace, and oxygen is introduced from bottom to top for calcination.

[0003] Chinese utility model patent CN210321230U discloses a sagger. Although this device can solve the technical problem that grinding the bottom surface of the sagger to avoid misalignment can easily damage the bottom of the sagger and reduce its service life, and achieve the technical effect of reducing wear on the bottom surface of the sagger and extending its service life, the device does not have a dedicated ventilation and heat dissipation channel during use. It is difficult to form good air circulation, and it cannot timely discharge sintering waste gas and dissipate heat inside the sagger, which affects the sintering effect of lithium battery cathode material.

[0004] Therefore, in order to address the shortcomings of the above-mentioned problems, a sagger for sintering lithium battery cathode materials is proposed. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a crucible for sintering lithium battery cathode materials.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a sagger for sintering lithium battery cathode materials, comprising: a shell;

[0007] The upper surface of the housing is provided with a receiving cavity, the top of the housing is provided with a plurality of flow grooves, the bottom inner wall of each of the plurality of flow grooves is provided with a through ventilation groove, and the outer wall of the housing is provided with a heat dissipation unit.

[0008] The heat dissipation unit includes: a plurality of first heat dissipation channels and a plurality of second heat dissipation channels, which are distributed in an X-shape.

[0009] In a preferred embodiment of this utility model, a number of reinforcing rods are fixedly connected between the inner walls of the two sides of the ventilation slot.

[0010] In a preferred embodiment of this utility model, a plurality of interconnected flow channels are provided between the two opposite ventilation channels.

[0011] In a preferred embodiment of this invention, several of the flow channels are formed at the bottom of the housing.

[0012] In a preferred embodiment of this utility model, the depth of the plurality of first heat dissipation channels and the plurality of second heat dissipation channels is 1 cm.

[0013] In a preferred embodiment of this utility model, the width of each of the plurality of first heat dissipation channels and the plurality of second heat dissipation channels is 1.2cm.

[0014] In a preferred embodiment of this utility model, the shell is made of high-temperature resistant and high-strength corundum material.

[0015] In a preferred embodiment of this utility model, the width of the ventilation slot is 0.5cm, the reinforcing rod is made of the same corundum material as the shell, and the diameter of the reinforcing rod is 0.2cm.

[0016] In a preferred embodiment of this utility model, the outer walls of the shell are coated with an aluminum oxide coating with a thickness of 0.1 mm.

[0017] In a preferred embodiment of this invention, several of the flow channels are distributed in a cross pattern.

[0018] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0019] (1) This utility model provides a sagger for sintering lithium battery cathode materials. Several flow grooves opened on the top of the shell and ventilation grooves penetrating the bottom cooperate to form a good air flow channel. When the sagger is used to sinter lithium battery cathode materials, hot air can enter the flow groove through the ventilation groove and through several interconnected flow grooves, and the flow grooves are cross-distributed to enhance the air flow, so that the air inside the sagger can be fully circulated. This ventilation design can remove the waste gas and heat generated during the sintering process in time, ensure the stability and uniformity of the cathode material sintering environment, and help improve the sintering quality of the cathode material.

[0020] (2) This utility model provides a sagger for sintering lithium battery cathode materials. Through the arrangement of a heat dissipation unit, which consists of several first heat dissipation channels and several second heat dissipation channels arranged in an X-shape, this cross-distribution structure greatly increases the heat dissipation area. During the sintering process, heat can be quickly dissipated through the first and second heat dissipation channels. Furthermore, the first and second heat dissipation channels have suitable depths and widths, both 1 cm deep and 1.2 cm wide. This ensures unobstructed heat dissipation channels, sufficient heat dissipation space, and rapid and effective temperature reduction, minimizing heat accumulation within the sagger and extending its service life. It also helps improve sintering efficiency.

[0021] (3) This utility model provides a sagger for sintering lithium battery cathode materials. Through a number of reinforcing rods between the inner walls on both sides of the ventilation slot, the reinforcing rods are made of the same corundum material as the shell. While ensuring the ventilation effect, the structural strength of the ventilation slot is enhanced, and the ventilation slot is prevented from deforming or being damaged during use. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a three-dimensional structural diagram of the first-view device body according to a preferred embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the second-view device body according to a preferred embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional view of the device body according to a preferred embodiment of the present invention.

[0026] In the figure: 1. Housing; 2. Heat dissipation unit; 201. First heat dissipation channel; 202. Second heat dissipation channel; 3. Ventilation slot; 4. Flow channel; 5. Reinforcing rod; 6. Receiving cavity. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] like Figure 1 As shown, a sagger for sintering lithium battery cathode materials includes: a shell 1;

[0029] like Figures 2-3 As shown, the upper surface of the housing 1 is provided with a receiving cavity 6, the top of the housing 1 is provided with several flow grooves 4, the bottom inner wall of each of the several flow grooves 4 is provided with a through ventilation groove 3, and the outer wall of the housing 1 is provided with a heat dissipation unit 2.

[0030] The heat dissipation unit 2 includes: a plurality of first heat dissipation channels 201 and a plurality of second heat dissipation channels 202, which are distributed in an X-shape. A plurality of reinforcing rods 5 are fixedly connected between the inner walls of the two sides of the ventilation slot 3. A plurality of interconnected flow slots 4 are provided between two opposite ventilation slots 3.

[0031] Several flow channels 4 are formed at the bottom of the shell 1. Several first heat dissipation channels 201 and several second heat dissipation channels 202 are 1cm deep and 1.2cm wide. The shell 1 is made of high-temperature resistant and high-strength corundum material. The ventilation channel 3 is 0.5cm wide. The reinforcing rod 5 is made of the same corundum material as the shell 1. The diameter of the reinforcing rod 5 is 0.2cm. The outer walls of the shell 1 are coated with an aluminum oxide coating with a coating thickness of 0.1mm. Several flow channels 4 are distributed in a cross pattern.

[0032] It should be noted that the receiving cavity 6 is used to place the lithium battery positive electrode material. The top flow groove 4 and the through ventilation groove 3 constitute a high-efficiency ventilation system, allowing air to flow fully and promptly expel sintering exhaust gas, ensuring a stable and uniform environment inside the receiving cavity 6. The reinforcing rod 5, made of the same material as the shell 1, inside the ventilation groove 3 enhances the structural strength of the ventilation groove 3, preventing high-temperature deformation and damage, ensuring stable operation of the ventilation system, and guaranteeing the sintering effect. The first heat dissipation channel 201 and the second heat dissipation channel 2, which are distributed in an X-shape in the heat dissipation unit 2, have a depth of 1cm and a width of 1.2cm, ensuring unobstructed heat dissipation channels and sufficient space, greatly increasing the heat dissipation area, and quickly dissipating the heat of the sagger, reducing heat accumulation. Furthermore, the alumina coating can effectively prevent the material from corroding the sagger and has excellent anti-adhesion effect.

[0033] In this invention, high-temperature resistant and high-strength corundum material is selected as the raw material for manufacturing the shell 1 to ensure that the sagger can withstand the high-temperature environment during the sintering process. The lithium battery positive electrode material to be sintered is carefully placed into the receiving cavity 6, and the device body filled with the material is placed in the high-temperature sintering furnace. During the sintering process, the ventilation system consisting of the top flow channel 4 and the ventilation channel 3 begins to function. Hot air and sintering exhaust gas enter the flow channel 4 through the ventilation channel 3 and are discharged outside the sagger, ensuring a stable and uniform environment inside the receiving cavity 6. At the same time, the first heat dissipation channel 201 and the second heat dissipation channel 2 in the heat dissipation unit 2 quickly dissipate the heat of the sagger, reducing heat accumulation. After sintering is completed, the device body is cooled to a safe temperature and then removed from the sintering equipment.

[0034] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sagger for sintering lithium battery cathode materials, comprising: The shell (1) is characterized in that; The upper surface of the housing (1) is provided with a receiving cavity (6), the top of the housing (1) is provided with a plurality of flow grooves (4), the bottom inner wall of the plurality of flow grooves (4) is provided with a through ventilation groove (3), and the outer wall of the housing (1) is provided with a heat dissipation unit (2). The heat dissipation unit (2) includes: a plurality of first heat dissipation channels (201) and a plurality of second heat dissipation channels (202), which are distributed in an X-shape.

2. The sagger for sintering lithium battery cathode materials according to claim 1, characterized in that: Several reinforcing rods (5) are fixedly connected between the inner walls of the two sides of the ventilation slot (3).

3. The sagger for sintering lithium battery cathode materials according to claim 1, characterized in that: Several interconnected flow channels (4) are provided between the two opposite ventilation channels (3).

4. A sagger for sintering lithium battery cathode materials according to claim 1, characterized in that: Several of the aforementioned flow channels (4) are formed at the bottom of the housing (1).

5. A sagger for sintering lithium battery cathode materials according to claim 4, characterized in that: The depth of several first heat dissipation channels (201) and several second heat dissipation channels (202) is 1 cm.

6. A sagger for sintering lithium battery cathode materials according to claim 1, characterized in that: The width of several first heat dissipation channels (201) and several second heat dissipation channels (202) is 1.2cm.

7. A sagger for sintering lithium battery cathode materials according to claim 1, characterized in that: The shell (1) is made of corundum material that is resistant to high temperature and has high strength.

8. A sagger for sintering lithium battery cathode materials according to claim 2, characterized in that: The ventilation slot (3) has a width of 0.5cm, the reinforcing rod (5) is made of the same corundum material as the shell (1), and the diameter of the reinforcing rod (5) is 0.2cm.

9. A sagger for sintering lithium battery cathode materials according to claim 1, characterized in that: The outer walls of the shell (1) are coated with an aluminum oxide coating with a thickness of 0.1 mm.

10. A sagger for sintering lithium battery cathode materials according to claim 1, characterized in that: Several of the aforementioned flow channels (4) are distributed in a cross pattern.

Images