• International Journal of Internet, Broadcasting and Communication
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• 제15권3호
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• pp.118-121
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• 2023

Recently, green energy support policies have been announced around the world in accordance with environmental regulations, and asthe market grows rapidly, demand for batteries is also increasing. Therefore, various methodologies for battery diagnosis and recycling methods are being discussed, but current accurate life prediction of batteries has limitations due to the nonlinear form according to the internal structure or chemical change of the battery. In this paper, CS2 lithium-ion battery measurement data measured at the A. James Clark School of Engineering, University of Marylan was used to predict battery performance with high accuracy using a convolutional neural network (CNN) model among deep learning-based models. As a result, the battery performance was predicted with high accuracy. A data structure with a matrix of total data 3,931 ☓ 19 was designed as test data for the CS2 battery and checking the result values, the MAE was 0.8451, the RMSE was 1.3448, and the accuracy was 0.984, confirming excellent performance.

• 자원리싸이클링
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• 제31권6호
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• pp.81-91
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• 2022

리튬이온 배터리의 사용은 전자기기 및 전기차 등의 생산량 증가로 인해 사용량이 크게 증가하고 있으며, 이와 맞물려 향후 폐배터리의 발생량 증가도 예상된다. 따라서 폐배터리를 구성하고 있는 여러 유가 자원 중 Ni, Co, Mn, Li 등이 함유되어 있는 양극 활물질이 매우 중요한 유가 자원으로, 이를 재활용하기 위한 많은 연구가 진행되고 있다. 양극 활물질 회수를 위해서 일반적으로 폐배터리로부터 블랙 매스(Black mass)를 회수하고, 이를 처리하여 주요 금속 자원을 회수한다. 블랙 매스를 회수하는 공정은 폐배터리를 수거-방전-해체-파쇄-분급의 순서로 이루어지며, 본 연구에서는 블랙 매스 회수를 위한 파쇄/분급 공정을 분석하였다. 파쇄/분급 공정을 통해 다양한 공정 산물의 입도 특성을 분석하고, 이 과정에서 생산된 산물의 입도별 형상을 현미경 및 SEM(Scanning Electron Microscopy)-EDS(Energy Dispersive Spectrometer)로 분석하였다. 분석 결과 블랙 매스로 회수되는 입자 중 74 ㎛의 미세한 입자들은 양극/음극 활물질이 전극으로부터 단체분리되어 존재하였지만, 100 ㎛ 이상의 입자들은 전극과 활물질이 붙어있는 상태에서 파쇄에 의해 입도가 감소되어 존재함을 확인하였다. 또한 배터리의 특징인 2종 혼합물(전극과 활물질)이 결합되어 있는 시료에 대해 파분쇄 특성을 모사할 수 있는 PBM(Population Balance Model) 을 개발하였으며, 2종 혼합물의 분쇄 상수를 도출하고 입도 분포 예측 성능을 검증하였다.

• 디지털산업정보학회논문지
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• 제9권1호
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• pp.53-58
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• 2013

In this paper, we proposed low power algorithm for battery residual capacity and a task. Algorithm the mobile devices power of the battery residual capacity for the task to perform power consumption to reduce the frequency alters. Task is different in power consumption according to kinds of in time accomplishment device to use. Adjustment of power consumption analyzes kinds of given tasks from having the minimum power consumption task to having the maximum power consumption task. Control frequency so that power consumption waste to be exposed to battery residual capacity can be happened according to the results analyzed. Experiment the frequency by adjusting power consumption a method to reduce using [7] and in the same environment power of the battery residual capacity consider the task to perform frequency were controlled. Efficiency was proved compare with the experiment results [7]. The experiments results show increment in the number of processing by 45.46% comparing with that [7] algorithm.

• Journal of information and communication convergence engineering
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• 제19권2호
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• pp.84-92
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• 2021

The research on waste power batteries in China in the past ten years reveals that the power battery recycling industry is enormous but marred with several challenges. A study of China's current power battery closed-loop supply chain revealed some issues in the power battery recycling industry, such as imperfect supply chain, small recycling scale, asymmetric information, and imperfect profit distribution mechanism. This paper uses the theory of corporate social responsibility and consumer choice to propose a closed-loop network of power batteries based on block chain technology and analyzes the existing closed-loop supply chain of power batteries. Consequently, this study provides a new idea for developing the power battery closed-loop supply chain by proposing the closed-loop network of power batteries based on blockchain technology.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.252-256
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• 2001

The rapid development of communication equipment and information processing technology has led to a constant improvement in cordless communication. Lithium ion batteries used in cellular phones and laptop computers, in particular, have been in the forefront of the above revolution. These batteries use high value added raw materials and have a high and stable energy output and are increasingly coming into common use. The development of the material for the negative terminal has led to an improvement in the quality and efficiency of the batteries, whereas a reduction in the cost of the battery by researching new materials for the positive anode has become a research theme by itself. These long life batteries, it is being increasingly realized, can have value added to them by recycling. Research is increasingly being done on recycling the aluminum case and the load casing for the negative diode. This paper aims to introduce the current situation of recycling of lithium ion batteries. 1. Introduction 2. Various types of batteries and the situation of their recycling and the facts regarding recycling. 3. Example of cobalt recycling from waste Lithium ion secondary cell. 3-1) Flow Chart of Lithium ion battery recycling 3-2) Materials that make a lithium ion secondary cell. 3-3) Coarse grinding of Lithium ion secondary cell, and stabilization of current discharge 3-4) Burning 3-5) Grinding 3-6) Magnetic Separation 3-7) Dry sieving 3-8) Dry Classifying 3-9) Content Ratio of recycled cobalt parts 3-10) Summary of the Line used for the recovery of Cobalt from waste Lithium ion battery. 4. Conclusion.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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• pp.1368-1370
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• 2005

Satellite is operated only with internal battery when separated from rocket. Internal battery is charged only from SAR(solar Array Regulator), solar cell. So battery will be exhausted and purpose of satellite will be failed if load module is out of order or short. This paper proposed real time current limiter which operated by telemetry of outer processor. This current limiter operates by control signal simultaneously cuts off over current by self over current sensing circuit. So it can reduce waste of battery energy and over load of outer processor.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 춘계학술대회
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• pp.680-682
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• 2022

The closed-loop supply chain's central enterprises aim to maximize the revenue and reduce the reclaiming channel level to the greatest extent by using blockchain and modern management methods. The traditional recycling network has more links, and there is less communication between enterprises in each link. There is a particular "bullwhip effect" in the channel link, making it difficult for power battery manufacturers to respond to the dynamic market quickly. It is often challenging to obtain scaled waste power batteries, which aggravates how power battery raw materials are expensive and difficult to recycle. Therefore, the closed-loop supply chain design of power batteries adopting blockchain shall minimize channel links and reduce transaction levels to reduce costs.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.570-571
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• 2021

The research on waste power batteries in China in the past ten years reveals that the power battery recycling industry is enormous but marred with several challenges. A study of China's current power battery closed-loop supply chain revealed some issues in the power battery recycling industry, such as imperfect supply chain, small recycling scale, asymmetric information, and imperfect profit distribution mechanism. This paper uses the theory of corporate social responsibility and consumer choice to propose a closed-loop network of power batteries based on block chain technology and analyzes the existing closed-loop supply chain of power batteries. Consequently, this study provides a new idea for developing the power battery closed-loop supply chain by proposing the closed-loop network of power batteries based on blockchain technology

• 한국분말재료학회지
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• 제21권4호
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• pp.286-293
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• 2014

The electrochemical properties of cells assembled with the $LiNiO_2$ (LNO) recycled from cathode materials of waste lithium secondary batteries ($Li[Ni,Co,Mn]O_2$), were evaluated in this study. The leaching, neutralization and solvent extraction process were applied to produce high-purity $NiSO_4$ solution from waste lithium secondary batteries. High-purity NiO powder was then fabricated by the heat-treatment and mixing of the $NiSO_4$ solution and $H_2C_2O_4$. Finally, $LiNiO_2$ as a cathode material for lithium ion secondary batteries was synthesized by heat treatment and mixing of the NiO and $Li_2CO_3$ powders. We assembled the cells using the $LiNiO_2$ powders and evaluated the electrochemical properties. Subsequently, we evaluated the recycling possibility of the cathode materials for waste lithium secondary battery using the processes applied in this work.

• 대한화학회지
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• 제63권6호
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• pp.440-445
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• 2019

본 연구는 자동차 폐리튬 이차전지의 모듈로부터 재생할 수 있는 자원을 효율적으로 회수하는 방법을 개발하는 것이다. 모듈의 셀은 구리 박막, 알루미늄 박막, 그리고 이들 사이는 폴리머 재질의 격막으로 이루어져 있다. 셀은 특별히 제작한 글러브 상자 안에서 그리고 여러 번의 단계를 거쳐 손상 없이 완전히 해체 하였다. 우선적으로 양극활물질은 400 ℃에서 열처리하여 알루미늄 박막으로부터 분리하였다. 그런 후 분리된 양극활물질은 잔류되어 있는 탄소 성분을 제거하기 위해 800 ℃에서의 소성 후에 최종적으로 높은 순도로 회수되었다. 본 연구 결과를 바탕으로 해서, 알루미늄 박막으로부터 양극활물질을 구성하고 있는 코발트(Co), 니켈(Ni), 망간(Mn), 리튬(Li)과 같은 희유금속들을 80% 이상 회수할 수 있었다.