Sagger for sintering battery positive electrode material

Abstract

The utility model discloses a sagger for sintering a battery positive electrode material, which comprises a sagger body, the sagger body is provided with an accommodating groove for accommodating the battery positive electrode material, the top of the sagger body is provided with a vent groove communicated with the accommodating groove, and the outer side wall of the sagger body is provided with a bulge. The outer side wall of the sagger body is provided with a plurality of vent holes communicating with the containing groove, and the vent holes are formed below the vent groove. The vent holes are formed in the lower position of the side face of the sagger, so that the space use efficiency of the sagger is not reduced, the simple structure of the sagger is guaranteed, the flowability of gas in the sagger is improved, and the sintering uniformity of materials is improved; furthermore, through the design of arc-shaped fillets, vent grooves and protrusions, when multiple layers and multiple columns of saggars are sintered at the same time, airflow channels can be formed between the saggars, flowing of gas between the saggars is effectively promoted, the problem that in the prior art, gas circulation of lower saggars is not smooth is solved, the material sintering sufficiency and uniformity are improved, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery materials, in particular to a sagger for sintering battery positive electrode materials. Background Art

[0002] Patent document CN218723173U discloses a high-temperature sintering sagger, comprising a sagger body with a sintering cavity; the sagger body comprises an outer wall and an inner wall arranged in the outer wall; the inner wall is located at the center of the sintering cavity, a ventilation cavity is arranged in the inner wall, the inlet of the ventilation cavity is located in the outer wall, and several outlets of the ventilation cavity are dispersed on the surface of the inner wall. Thus, it is used to balance the oxygen flow in different parts of the sintering cavity and ensure that the gas and the material are fully in contact.

[0003] However, the sagger structure design is relatively complex, and components are added inside the sagger, which reduces the space utilization rate of the sagger. When multi-layer and multi-row saggers are sintered, the gas fluidity of the lower sagger is poor, the material reaction efficiency is low, and the product sintering is uneven. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a sagger for sintering positive electrode materials of batteries.

[0005] In order to solve the above technical problems, the technical solution proposed by the utility model is:

[0006] A sagger for sintering positive electrode materials of a battery comprises a sagger body, the sagger body is provided with a receiving groove for receiving positive electrode materials of the battery, a ventilation groove connected to the receiving groove is arranged on the top of the sagger body, a protrusion is arranged on the outer wall of the sagger body, a plurality of ventilation holes connected to the receiving groove are arranged on the outer wall of the sagger body, and the ventilation holes are arranged below the ventilation groove.

[0007] Furthermore, the ventilation groove extends along the length direction and the width direction of the sagger body, and a plurality of the ventilation grooves are arranged around the sagger body.

[0008] Furthermore, the ventilation holes are evenly distributed along the length direction and the width direction of the sagger body, and a plurality of the ventilation holes are arranged circumferentially of the sagger body.

[0009] Furthermore, the vent hole is arranged at an inclination, and the inclination direction of the vent hole is arranged from the inside of the containing groove to the outside and upward.

[0010] Furthermore, the angle between the vent hole and the side surface of the sagger body is 0-15°.

[0011] Furthermore, an arc-shaped fillet is formed between two side surfaces of the sagger body.

[0012] Furthermore, the protrusions are arranged on both sides of the arc-shaped fillet.

[0013] Furthermore, the protrusion is arranged on the top of the sagger body, and the protrusion and the top of the sagger body form a supporting plane.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] The utility model arranges ventilation holes at the lower part of the side of the sagger, which does not reduce the efficiency of using the sagger space and ensures the simplicity of the sagger structure, while improving the fluidity of the gas in the sagger and improving the uniformity of material sintering; further, through the design of arc fillets, ventilation grooves and protrusions, when multiple layers and multiple rows of saggers are sintered at the same time, gas channels can be formed between the saggers, which effectively promotes the flow of gas between the saggers, solves the problem of poor gas circulation in the lower sagger in the prior art, improves the sufficiency and uniformity of material sintering, and improves product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a sagger for sintering positive electrode materials of a battery disclosed in a preferred embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the first airflow channel and the second airflow channel disclosed in the preferred embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the airflow direction disclosed in the preferred embodiment of the utility model.

[0019] Legend:

[0020] 1. sagger body; 2. containing groove; 3. ventilation groove; 4. ventilation hole; 5. protrusion; 6. first air flow channel; 7. second air flow channel. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0022] like Figure 1-3As shown, this embodiment discloses a sagger for sintering positive electrode materials of a battery, including a sagger body 1, the whole material of which is a mullite part, a quartz part or a corundum part. The sagger body 1 is provided with a receiving groove 2 for accommodating positive electrode materials of the battery. Specifically, the length of the sagger body 1 is preferably 330 mm, the width is preferably 330 mm, the height is preferably 130 mm, the bottom thickness is preferably 10 mm, and the side thickness is preferably 10 mm. A vent 3 connected to the receiving groove 2 is provided on the top of the sagger body 1. The vent 3 forms a structure similar to an arc opening, and the length is preferably 250 mm, the width is preferably 10 mm, and the height is preferably 30 mm; a protrusion 5 is provided on the outer wall of the sagger body 1, and the length is preferably 40 mm, the width is preferably 8 mm, and the height is preferably 20 mm. There are 2 protrusions on each outer wall, which are located at the four corners of the top of the sagger. Through the interval of the protrusion 5, the airflow can move from bottom to top; a plurality of vent holes 4 connected to the receiving groove 2 are provided on the outer wall of the sagger body 1, and the vent holes 4 are arranged below the vent trough 3. The diameter of the vent hole 4 is preferably 3 mm, 30 mm from the bottom of the sagger, and the angle with the side is 7.5°. Thus, the vent hole 4 can promote the flow of gas inside the sagger body 1, increase the contact area between the material and the gas, speed up the exhaust gas discharge, and improve the sufficiency and uniformity of the material sintering.

[0023] In this embodiment, the ventilation grooves 3 extend along the length and width directions of the sagger body 1, and four ventilation grooves 3 are arranged circumferentially of the sagger body 1, and the bottoms of the four ventilation grooves 3 form arc angles, so as to facilitate the formation of the second air flow channel 7 between adjacent saggers.

[0024] In the present embodiment, the vents 4 are evenly distributed along the length and width directions of the sagger body 1, and a plurality of vents 4 are evenly distributed on the four circumferential surfaces of the sagger body 1. In the specific setting, the vents 4 are arranged obliquely, and the inclination direction of the vents 4 is arranged obliquely upward from the inside of the receiving tank 2. Thus, the positive electrode material of the battery in the receiving tank 2 will not easily escape from the vents 4 to the outside (the positive electrode material of the battery is easily slipped out under the action of gravity when it is arranged obliquely downward). The angle between the vents 4 and the side of the sagger body 1 is preferably 7.5°.

[0025] In this embodiment, in order to form a first airflow channel 6 with smooth airflow between the four corners of the four sagger bodies 1, arc-shaped fillets are formed between the two side surfaces of the sagger bodies 1, which can also prevent the four corner tips from being damaged by collision. The protrusions 5 are arranged on both sides of the arc-shaped fillets.

[0026] In this embodiment, in order to facilitate the molding and demoulding of the sagger body 1, the protrusion 5 is arranged on the top of the sagger body 1. The protrusion 5 and the top of the sagger body 1 form a supporting plane, which is convenient for stacking multiple sagger bodies 1.

[0027] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A sagger for sintering positive electrode materials of a battery, comprising a sagger body (1), wherein the sagger body (1) is provided with a receiving groove (2) for receiving the positive electrode materials of the battery, characterized in that: A ventilation groove (3) connected to the containing groove (2) is arranged on the top of the sagger body (1); a protrusion (5) is arranged on the outer wall of the sagger body (1); a plurality of ventilation holes (4) connected to the containing groove (2) are arranged on the outer wall of the sagger body (1); and the ventilation holes (4) are arranged below the ventilation groove (3).

2. The sagger for sintering positive electrode materials of a battery according to claim 1, characterized in that: The ventilation groove (3) extends along the length direction and the width direction of the sagger body (1), and a plurality of the ventilation grooves (3) are arranged in the circumference of the sagger body (1).

3. The sagger for sintering positive electrode materials of a battery according to claim 1, characterized in that: The ventilation holes (4) are evenly distributed along the length direction and the width direction of the sagger body (1), and a plurality of the ventilation holes (4) are arranged in the circumference of the sagger body (1).

4. The sagger for sintering positive electrode materials of a battery according to claim 1, characterized in that: The vent hole (4) is arranged obliquely, and the inclination direction of the vent hole (4) is arranged obliquely upward from the inside of the containing groove (2) to the outside.

5. The sagger for sintering positive electrode materials of a battery according to claim 4, characterized in that: The included angle between the ventilation hole (4) and the side surface of the sagger body (1) is 0-15°.

6. The sagger for sintering positive electrode materials of a battery according to any one of claims 1 to 5, characterized in that: An arc-shaped fillet is formed between the two side surfaces of the sagger body (1).

7. The sagger for sintering positive electrode materials of a battery according to claim 6, characterized in that: The protrusions (5) are arranged on both sides of the arc-shaped fillet.

8. The sagger for sintering positive electrode materials of a battery according to claim 6, characterized in that: The protrusion (5) is arranged on the top of the sagger body (1), and the protrusion (5) and the top of the sagger body (1) form a supporting plane.

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