• Title, Summary, Keyword: Lithium-ion battery

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Lithium-ion Stationary Battery Capacity Sizing Formula for the Establishment of Industrial Design Standard

  • Chang, Choong-koo;Sulley, Mumuni
    • Journal of Electrical Engineering and Technology
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    • v.13 no.6
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    • pp.2561-2567
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    • 2018
  • The extension of DC battery backup time in the DC power supply system of nuclear power plants (NPPs) remains a challenge. The lead-acid battery is the most popular at present. And it is generally the most popular energy storage device. However, extension of backup time requires too much space. The lithium-ion battery has high energy density and advanced gravimetric and volumetric properties. The aim of this paper is development of the sizing formula of stationary lithium-ion batteries. The ongoing research activities and related industrial standards for stationary lithium-ion batteries are reviewed. Then, the lithium-ion battery sizing calculation formular is proposed for the establishment of industrial design standard which is essential for the design of stationary batteries of nuclear power plants. An example of calculating the lithium-ion battery capacity for a medium voltage UPS is presented.

Design Considerations of a Lithium Ion Battery Management System (BMS) for the STSAT-3 Satellite

  • Park, Kyung-Hwa;Kim, Chol-Ho;Cho, Hee-Keun;Seo, Joung-Ki
    • Journal of Power Electronics
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    • v.10 no.2
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    • pp.210-217
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    • 2010
  • This paper introduces a lithium ion battery management system (BMS) for the STSAT-3 satellite. The specifications of a lithium ion battery unit are proposed to supply power to the satellite and the overall electrical and mechanical designs for a lithium ion battery management system are presented. The structural simulation results will be shown to confirm the behavior of both the BMS and the cells.

Space Qualification of Small Satellite Li-ion Battery System for the Secured Reliability (소형인공위성용 리튬이온 배터리시스템의 신뢰성 확보을 위한 우주인증시험)

  • Park, Kyung-Hwa;Yi, Kang-Hyun
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.42 no.4
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    • pp.351-359
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    • 2014
  • This paper introduces the lithium ion battery system for LEO(Low Earth Orbit) small satellites. This study proves the reliability of lithium ion batteries applying to the space application. The specifications for lithium ion battery unit are proposed to supply power to the satellite and the overall mechanical design including structural simulation to confirm the reliability of the lithium ion BMS(Battery Management System) under the space environment and launching conditions. The results of structural simulation, functional tests, and space environmental tests show the lithium ion battery system is space qualified. Space qualification of the small satellite battery system to secure reliability of BMS and lithium ion batteries lend credibility for using lithium ion batteries in space application.

Development of a new Li-Ion Pack-Battery for improving the electrical properties (전기적인 특성향상을 위한 리튬이온전지팩 개발)

  • Gang, Young-Gu;Kweon, Hyun-Kyu;Seo, Myung-Su;Park, Chang-Yong
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.8 no.2
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    • pp.90-95
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    • 2009
  • This paper presents a new lithium ion unit-cell and pack battery by using a new formulation ratio of material. The three types of formulation ratio for the unit-cell were used. The life cycle and basic properties of the lithium ion unit-cell$({\Psi}18{\times}65(mm))$ about one of them were acquired by the charge-discharge experiment. The nominal voltage, nominal capacity and cycle life output of the lithium ion unit-cell is respectively 3.7V, 2.4Ah, and above 500cycle. Pack type lithium ion battery has the size of $29.5{\times}73.5{\times}115(mm)$ and the weight of 300g. As the results, the weight and bulk of lithium ion battery used to a safety lamp were decreased to 1/4 and 1/7. In addition, the comparison of the new lithium ion battery and lead storge battery for confirming the effectiveness of the new lithium ion battery have been performed.

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Improvement of Available Battery Capacity in Electric Vehicles

  • Liu, Yow-Chyi
    • Journal of Power Electronics
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    • v.13 no.3
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    • pp.497-506
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    • 2013
  • This paper proposes a new method to improve the available battery capacity in electric vehicles by connecting lead-acid batteries with lithium-ion battery in parallel to supply power. In addition, this method combines the discharge characteristics of batteries to improve their efficiency and lower their cost for electric vehicles. A lithium-ion battery set is used to connect with N sets of lead-acid batteries in parallel. The lead-acid battery supplies the initial power. When the lead-acid battery is discharged by the load current until its output voltage drops to the cut-off voltage, the power management unit controls the lead-acid battery and changes it to discharge continuously with a small current. This discharge can be achieved by connecting the lead-acid battery to a lithium-ion battery in parallel to supply the load power or to discharge its current to another lead-acid or lithium-ion battery. Experimental results demonstrates that the available capacity can be improved by up to 30% of the rated capacity of the lead-acid batteries.

Lifetime Management Method of Lithium-ion battery for Energy Storage System

  • Won, Il-Kuen;Choo, Kyoung-Min;Lee, Soon-Ryung;Lee, Jung-Hyo;Won, Chung-Yuen
    • Journal of Electrical Engineering and Technology
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    • v.13 no.3
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    • pp.1173-1184
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    • 2018
  • The lifetime of a lithium-ion battery is one of the most important issues of the energy storage system (ESS) because of its stable and reliable operation. In this paper, the lifetime management method of the lithium-ion battery for energy storage system is proposed. The lifetime of the lithium-ion battery varies, depending on the power usage, operation condition, and, especially the selected depth of discharge (DOD). The proposed method estimates the total lifetime of the lithium-ion battery by calculating the total transferable energy corresponding to the selected DOD and achievable cycle (ACC) data. It is also demonstrated that the battery model can obtain state of charge (SOC) corresponding to the ESS operation simultaneously. The simulation results are presented performing the proposed lifetime management method. Also, the total revenue and entire lifetime prediction of a lithium-ion battery of ESS are presented considering the DOD, operation and various condition for the nations of USA and Korea using the proposed method.

The Simulation of Single Phase Multi-Level Converter which can control the SOC of Lithium-Ion Battery Units (리튬이온 배터리의 SOC 제어가 가능한 단상 멀티레벨 컨버터 시뮬레이션)

  • Kim, Jae-Hong;Kim, Eel-Hwan
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.25 no.6
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    • pp.122-128
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    • 2011
  • This paper proposes a new control scheme of lithium ion battery units based on single phase multi-level converter. In the DC/AC converter applications using battery storage system, it is necessary to control the balancing voltage of individual battery units for high efficiency utilization. Using the proposed control scheme, the DC/AC single phase converter system is applied. To verify the effectiveness of the proposed control scheme, computer simulation is accomplished. In the computer simulation, lithium-ion battery units and single phase multi-level converter system are modeled and carried out using Psim simulation program. It will be helpful for design and applications of energy storage system with lithium-ion battery.

Design and development of less than 1Kw Lithium rechargeable battery pack

  • Kim, Sang-Bum;Lee, Sang-Hyun
    • International Journal of Internet, Broadcasting and Communication
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    • v.10 no.3
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    • pp.104-108
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    • 2018
  • Lithium-ion batteries have been used in energy storage systems (ESS), electric vehicles (EVs), etc. due to their high safety, fast charging and long lifecycle. This paper aims to improve the convenience of users by changing the wired battery stack used in the battery pack, wirelessly using RFID, reducing the internal volume of the battery pack, reducing the size of the battery pack. In this paper, we propose a battery management system which can provide the flexibility of battery pack expansion and maintenance by using lithium ion battery, battery management system (BMS) and wireless communication for light weight of 1Kw small battery pack. Also, by flexibly arranging the cell layout inside the battery pack and designing to reduce the size of the outer shape of the battery pack.

Intercalation Voltage and Lithium Ion Conduction in Lithium Cobalt Oxide Cathode for Lithium Ion Battery (리튬 이온 전지용 리튬 코발트 산화물 양극에서의 삽입 전압과 리튬 이온 전도)

  • Kim, Dae-Hyun;Kim, Dae-Hee;Seo, Hwa-Il;Kim, Yeong-Cheol
    • Journal of the Korean Electrochemical Society
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    • v.13 no.4
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    • pp.290-294
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    • 2010
  • We performed a density functional theory study to investigate the intercalation voltage and lithium ion conduction in lithium cobalt oxide for lithium ion battery as a function of the lithium concentration. There were two methods for the intercalation of lithium ions; the intercalation of a lithium ion at a time in the individual layer and the intercalation of lithium ions in all the sites of one layer after all the sites of another layer. The average intercalation voltage was the same value, 3.48 V. However, we found the former method was more favorable than the latter method. The lattice parameter c was increased as the increase of the lithium concentration in the range of x < 0.25 while it was decreased as increase of the lithium concentration in the range of x > 0.25. The energy barrier for the conduction of lithium ion in lithium cobalt oxide was increased as the lithium concentration was increased. We demonstrated that the decrease of the intercalation voltage and increase of the energy barrier as the increase of the lithium concentration caused lower output voltage during the discharge of the lithium ion battery.

Technology Developments for Recycling of Lithium Battery Wastes

  • Sohn, Jeong-Soo;Lee, Churl-Kyung
    • Journal of the Korean Institute of Resources Recycling
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    • v.12 no.1
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    • pp.65-74
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    • 2003
  • As new functional electronics are being developed fast, the commercialization rate of advanced battery as a power source proceeds rapidly. Lithium battery is satisfying the needs of high-energy source for its lightness and good electrochemical property. Especially lithium ion battery, adopted as a new power source for portable electronic equipments around the globe, has been mass-produced. Under the circumstance, the generation of lithium battery wastes is becoming a new environmental problem. In this paper, we are going to inspect technology developments for recycling of lithium battery wastes and scraps in domestic and foreign area, and to suggest how to treat domestic lithium battery wastes and scraps better.