KR-102962089-B1 - SAGGER FOR HEAT TREATMENT OF WASTE BATTERIES

KR102962089B1KR 102962089 B1KR102962089 B1KR 102962089B1KR-102962089-B1

Abstract

A saga for heat treatment of waste batteries according to various embodiments of the present invention for realizing the aforementioned objectives is disclosed. The saga for heat treatment of waste batteries may include a housing forming an internal space in which the waste battery is located, a cover portion provided at the top of the housing and reducing the effective cross-sectional area of the upper open surface by covering at least a portion of the open upper surface of the housing, and a sieve disposed inside the housing and having a plate-like structure having a plurality of perforations, which divides the internal space into an upper space and a lower space.

Inventors

윤정숙

Assignees

주식회사 알디솔루션

Dates

Publication Date: 20260508
Application Date: 20250617

Claims (10)

In a saga used for the heat treatment of spent batteries, A housing forming an internal space where the above-mentioned waste battery is located; A cover portion provided at the top of the housing, which reduces the effective cross-sectional area of the upper open surface by covering at least a portion of the open upper surface of the housing; and A sieve disposed inside the above housing, dividing the internal space into an upper space and a lower space, and having a plate-like structure with a plurality of perforations formed therein; Includes, The above cover part is, A first wing portion and a second wing portion having a plate-like structure arranged to face each other and having a plurality of perforations formed therein; and A connecting part connecting the first wing portion and the second wing portion to the housing; Includes, The first wing portion and the second wing portion are provided with an inclined surface structure to limit the effective area of the upper cross-section opened during the heat treatment process, and The above connecting portion connects the first wing portion and the second wing portion to the housing so that the first wing portion and the second wing portion can be tilted toward the center of the housing at a predetermined angle. Saga for heat treatment of waste batteries.
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In paragraph 1, The above housing is, A lower portion located at the bottom and having a plurality of perforations formed therein; and A side portion extending upward from the lower portion above, having a plurality of perforations formed on the outer surface and a reinforcing structure with a protruding shape formed in a portion of the area; including, Saga for heat treatment of waste batteries.
In paragraph 3, The above side portion is, A horizontal support member positioned at the top and formed flat to enable surface contact with the upper structure; and A plurality of side protrusions formed in a band shape protruding from the outer surface of the side portion at a predetermined interval below the horizontal support portion; including, Saga for heat treatment of waste batteries.
In paragraph 4, The above saga is, Further comprising: an insertion portion formed between a first side protrusion located at the uppermost of the above side protrusions and a second side protrusion disposed at a predetermined distance from the first side protrusion; The above insertion part is composed of a plurality of insertion spaces having an open shape so that an external insertion structure can be inserted laterally. Saga for heat treatment of waste batteries.
In paragraph 5, The above saga is, A through-hole formed in the gap between adjacent insertion spaces; and A reinforcing rib provided between the above-mentioned penetration portions, connecting the first side protrusion and the second side protrusion, and having a shape in which the cross-sectional width increases from the outer side to the inner side of the side portion; including, Saga for heat treatment of waste batteries.
In paragraph 3, The above lower portion is, A plurality of circular protrusions protruding downward and arranged with a plurality of circular steps in which the diameter gradually increases along the outer direction from the center; including, Saga for heat treatment of waste batteries.
In paragraph 3, The above lower portion is, A perforated area having multiple lower holes formed; A non-perforated connecting part arranged to connect the perforated area, wherein the plurality of lower holes are not formed; and A central hole formed in the central region of the above-mentioned non-perforated connection part; including, Saga for heat treatment of waste batteries.
In paragraph 1, The above sieve is, Multiple leg portions; and A support member having a flat plate structure that is supported to a predetermined height by the above-mentioned leg portion and has a plurality of perforations formed therein; Includes, The above internal space is divided into the upper space and the lower space based on the support member, and the waste battery is located in the upper space during the heat treatment process. Saga for heat treatment of waste batteries.
In Paragraph 9, The above support member is, A planar shape formed to match the internal shape of the housing, formed smaller than the inner circumference of the housing so as to be inserted into the housing. Saga for heat treatment of waste batteries.

Description

Saga for Heat Treatment of Waste Batteries The present invention relates to a perforated heat treatment container used in a heat treatment process for waste batteries, and more specifically, to a sagger for heat treatment of waste batteries having structural features for safely and efficiently heating waste batteries in a high-temperature environment. With the rapid increase in the use of various rechargeable batteries, such as lithium-ion and nickel-hydrogen batteries, across all industries, the importance of recovering end-of-life batteries and recycling resources is continuously being emphasized. In particular, for high-capacity batteries used in electric vehicles (EVs), energy storage systems (ESS), and power tools, the technology to recover and recycle valuable metals (e.g., lithium, cobalt, nickel, etc.) contained within the batteries is emerging as a critical task in terms of both economic and environmental aspects. Among these recycling processes, a heat treatment process to remove electrolyte and organic components contained in waste batteries is used as an essential pretreatment step, and the efficiency and safety of this process are directly linked to the yield of the subsequent metal recovery process. Therefore, the structural completeness of the heat treatment saga, which is designed to stably maintain waste batteries at high temperatures while simultaneously enabling efficient combustion and decomposition, is considered one of the key elements of the overall recycling system. Conventional saga are primarily composed of materials such as ceramics or refractory metals and have performed a passive role of simply accommodating spent batteries and inserting them into a high-temperature furnace. However, such saga structures have the following limitations. First, depending on the shape and arrangement of the waste batteries, the heat distribution may be uneven, which may cause problems such as some batteries overheating or, conversely, insufficient heat treatment. Furthermore, while structural strength and durability are required to enable repeated use even after exposure to high temperatures, conventional saga often suffer from cracking or deformation during repeated thermal cycles due to a lack of design consideration for proper stress distribution and mechanical support. Additionally, when attempting to process multiple stacked waste batteries during the heat treatment process, alignment or stable support between the upper and lower structures becomes difficult, leading to reduced work efficiency and limited compatibility with automated processes. Therefore, there is a demand for a new structure of waste battery heat treatment saga that can increase the thermal efficiency of the heat treatment process, maintain mechanical stability even in high-temperature repetitive environments, and allow for efficient gas flow with a perforated structure, while also being flexible enough to respond to multi-layer stacking operation and automation systems. Various aspects are now described with reference to the drawings, wherein similar reference numbers are used to collectively refer to similar components. In the following embodiments, for illustrative purposes, a number of specific details are presented to provide a comprehensive understanding of one or more aspects. However, it will be apparent that such aspect(s) may be practiced without these specific details. FIG. 1 is a schematic example of a saga for heat treatment of waste batteries related to one embodiment of the present invention. FIGS. 2 to 6 are illustrative diagrams for explaining the components of a saga for heat treatment of waste batteries related to one embodiment of the present invention. FIG. 7 is an illustrative diagram for explaining a sieve placed inside a saga for heat treatment of waste batteries related to one embodiment of the present invention. FIGS. 8 to 12 are drawings showing experimental results related to temperature distribution, flow rate distribution, and pressure distribution related to the saga for heat treatment of waste batteries according to the present invention. Various embodiments and/or aspects are now disclosed with reference to the drawings. For illustrative purposes, numerous specific details are disclosed in the following description to aid in a general understanding of one or more aspects. However, it will be apparent to those skilled in the art that these aspects may be practiced without such specific details. The following description and the accompanying drawings describe specific exemplary aspects of one or more aspects in detail. However, these aspects are exemplary, and some of the various methods in the principles of the various aspects may be used, and the descriptions are intended to include all such aspects and their equivalents. Specifically, terms such as “exemplary,” “example,” “aspect,” and “example” as used herein may not be interpreted as implying that any described aspect or design is superior