• Title/Summary/Keyword: 리튬폴리머 배터리

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A Simulation Study of the Performance of a Propulsion Equipment for Bimodal Tram (바이모달 트램의 추진장치 성능 모의)

  • Bae, Chang-Han;Mok, Jai-Kyun;Chang, Se-Ky;Lee, Kang-Won
    • Journal of the Korean Society for Railway
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    • v.12 no.1
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    • pp.122-128
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    • 2009
  • A bimodal low-floor tram is designed to provide the flexibility of bus and the punctuality of trains together to the passengers. The propulsion equipment of the bimodal tram is a series hybrid type using a set of CNG engine generator and Li-polymer battery. The present paper describes the specifications of the propulsion system in the bimodal tram which was drawn by a desirable driving cycle. In addition, it shows how the propulsion system of the bimodal tram can be controlled. With using a computer simulation tool of hybrid vehicles, ADVISOR, the performance of the bimodal tram was verified.

Study of Energy Consumption Efficiency of Electric Two-wheeled Vehicle by Change of Environment Variation (환경변화에 따른 전기이륜차의 에너지소비효율에 관한 연구)

  • Kil, Bum-Soo;Kim, Gang-Chul
    • Transactions of the Korean Society of Automotive Engineers
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    • v.20 no.2
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    • pp.56-63
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    • 2012
  • Environment has become a main issue nowadays. People began to show big interest in "futuristic means of transportation", which is an efficient method in $CO_2$ emissions reduction and decreasing use of oil. Due to the noise and emissions of two-wheel vehicle of internal combustion engine, electric two-wheeled vehicles have been supplied in downtown. The electric two-wheeled vehicles use battery as power source. The performance of lithium-ion battery changes as the ambient temperature changes. In this paper, analysis of performance variance of electric two-wheeled vehicles influenced by the temperature using the chassis dynamometer and the environmental chamber was carried out.

Battery Based High Voltage Capacitor Charger for HEMP Driving (HEMP 구동을 위한 배터리 기반 고전압 충전기)

  • Cho, Chan-Gi;Jia, Ziyi;Ryoo, Hong-Je
    • Proceedings of the KIPE Conference
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    • 2019.07a
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    • pp.124-126
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    • 2019
  • 본 논문은 리튬 폴리머 배터리를 기반으로 하여 High-altitude Electromagnetic Pulse (HEMP)를 구동하는 고전압 충전기의 2단 충전과 직접 충전 방법에 관하여 다룬다. 2단 충전 방법은 삼상 변압기의 출력 전압을 정류한 600 V의 전압에 공진 현상을 이용하여 최종 출력 전압 1.0 kV을 생성하는 반면, 직접 충전 방법은 공진 현상을 이용하지 않고 삼상 변압기의 출력 전압을 정류하여 1.0 kV를 생성한다. 두 방법 모두 1.0 kV의 출력 전압을 생성하는 점은 동일하지만, HEMP 구동을 위해서는 서로 다른 고려사항을 갖는다. 이에 따라, 시뮬레이션 및 기초 부하 실험을 통해 2단 충전 구조와 직접 충전 구조의 차이점, 그리고 충전기와 부하의 결선에 따른 차이점이 비교되었다.

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The State of Charge Estimation for Lithium-Polymer Battery using a PI Observer (PI 상태관측기를 이용한 리튬폴리머 배터리 SOC 추정)

  • Lee, Junwon;Jo, Jongmin;Kim, Sungsoo;Cha, Hanju
    • The Transactions of the Korean Institute of Power Electronics
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    • v.20 no.2
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    • pp.175-181
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    • 2015
  • In this study, a lithium polymer battery (LiPB) is simply expressed by a primary RC equivalent model. The PI state observer is designed in Matlab/Simulink. The non-linear relationship with the OCV-SOC is represented to be linearized with 0.1 pu intervals by using battery parameters obtained by constant-current pulse discharge. A state equation is configured based on battery parameters. The state equation, which applied Peukert's law, can estimate SOC more accurately. SOC estimation capability was analyzed by utilizing reduced Federal Test Procedure (FTP-72) current profile and using a bi-directional DC-DC converter at temperature ($25^{\circ}C$). The PI state observer, which is designed in this study, indicated a SOC estimation error rate of ${\pm}2%$ in any of the initial SOC states. The PI state observer confirms a strong SOC estimation performance despite disturbances, such as modeling errors and noise.

FM송신 무선핸즈프리 기반 사운드 확장과 성능향상에 관한 연구

  • Lee, Hyo-Jin;Gang, Sang-Uk;Jo, Yeong-Chang;Yun, Jeong-O
    • Proceedings of the Korea Society for Industrial Systems Conference
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    • 2008.10b
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    • pp.617-622
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    • 2008
  • 최근 멀티미디어 산업의 급속한 발달로 다양한 목적의 멀티미디어 제품 군들이 있다. 이러한 멀티미디어 제품은 대부분 휴대용으로 리튬폴리머 배터리를 내장하여 언제 어디서나 듣고, 청취하기 위해 대부분이 소형화된 기기들이다. 본 논문은 모바일 휴대폰에 소형의 FN 송신무선 핸즈프리 기반을 접목하여 사운드 확장과 성능향상에 대하여 연구하였다 FM 주파수대역은 할당 받지 않은 개인이 사용하기에는 출력 제약을 받기 때문에 무선 성능이 좋지 않다. 이를 향상하기 위해 PCB 패턴 안테나를 설계와 함께 안테나 급전부 연결방법 연구 결과로 통화 잡음을 제거하여 좋은 출력특성결과를 가져왔다. 이후 이를 모바일 존에 적용하여 거리에 따른 통화 감도를 높이기 위한 마이 이득 조절기능과 무선 FM 송신으로 수신 측 스피커를 이용하여 청취하므로 사운드확장 장점이 있으며, 통화 잡음을 제거하기 위한 검증시험 및 통합시험을 수행하였다.

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Development of a Battery Model for Electric Vehicle Virtual Platform (전기 자동차 가상 플랫폼용 배터리 모델 개발 및 검증)

  • Kim, Sunwoo;Jo, Jongmin;Han, Jaeyoung;Kim, Sung-Soo;Cha, Hanju;Yu, Sangseok
    • Transactions of the Korean Society of Automotive Engineers
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    • v.23 no.5
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    • pp.486-493
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    • 2015
  • In this paper, a battery model for electric vehicle virtual platform was developed. A battery model consisted of a battery cell model and battery thermal management system. A battery cell model was developed based on Randles equivalent circuit model. Circuit parameters in the form of 3D map data was obtained by charge-discharge experiment of Li-Polymer battery in various temperature condition. The developed battery cell model was experimentally verified by comparing voltages. Thermal management system model was also developed using heat generator, heat transfer and convection model, and cooling fan. For verification of the developed battery model in vehicle level, the integrated battery model was applied in to EV(electric vehicle) virtual platform, and virtual driving simulation using UDDS velocity profile was conducted. The accuracy of the developed battery model has been verified by comparing the simulation results from EV platform with the experimental data.

Development of 50kW Grid-Connected Power Station Based on Li-Polymer Battery (리튬 폴리머 배터리 기반의 50kW급 계통연계형 파워스테이션 개발)

  • Jung, Doo-Yong;Won, Chung-Yuen;Choi, Byung-Jun;Kim, Dong-Sung;Han, Hee-Min;Seo, Kwang-Duk
    • Proceedings of the KIPE Conference
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    • 2009.11a
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    • pp.249-251
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    • 2009
  • In this paper, we present a study on the 50kW class power station development using lithium-polymer battery. The 50kW class power station purposes to compensate for peak load using 326[V] lithium-polymer battery bank. The output voltage is 380[V] in three-phase, peak load compensation is controlled based on load power. Finally, a 50kW power station system is built to verify the experiment.

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A SOC Estimation using Kalman Filter for Lithium-Polymer Battery (칼만 필터를 이용한 리튬-폴리머 배터리의 SOC 추정)

  • Jang, Ki-Wook;Chung, Gyo-Bum
    • The Transactions of the Korean Institute of Power Electronics
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    • v.17 no.3
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    • pp.222-229
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    • 2012
  • The SOC estimation method based on Kalman Filter(KF) requires the accurate battery model to express the electrical characteristics of the battery. However, the performance of KF SOC estimator can hardly be improved because of the nonlinear characteristic of the battery. This paper proposes the new KF SOC estimator of Lithium-Polymer Battery(LiPB), which considers the variation of parameters based on the hysteresis effect, the magnitude of SOC, the charging/discharging mode and the on/off load conditions. The proposed SOC estimation method is verified with the PSIM simulation combined the experimental data of the LiPB.

A Study on the Mathematical Modeling Techniques for HEV High-power Lithium-Polymer Battery (HEV용 고출력 리튬 폴리머 배터리(LIPB)의 수학적 모델링 기법 연구)

  • Seo, Dong-Woo;Koo, Ja-Kyeong;Kim, Il-Song
    • The Transactions of the Korean Institute of Power Electronics
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    • v.17 no.6
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    • pp.532-538
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    • 2012
  • This paper proposes the Mathematical Modeling for HEV High-power Lithium-Polymer Battery. The nonlinear system of the Lithium Battery electrical characteristic express mathematical state equation. We also test charge/discharge and temperature experimental used to identify parameters of the cell find parameter of the least error. The proposed model experimental results is used with battery cycler to verify of the proposed model.

Driving Characteristics Analysis with Temperatures of Lithium Polymer Battery Pack for Bimodal Tram (바이모달트램에 탑재된 리튬폴리머배터리팩의 온도에 따른 운전특성분석)

  • Lee, Kang-Won;Jang, Se-Ky
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2010.06a
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    • pp.292-292
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    • 2010
  • Bimodal Tram is driven by both engine and Lithium Polymer battery pack which consists with 168 cells of LPB(80Ah, 650Vdc). LPB pack is very frequently charged and discharged in driving. Temperature inside of LPB pack makes an great effect on both charging and discharging capacity which seem to be related with LPB internal resistance. LPB internal resistance is increasing or little decreasing with the decreased temperature under 10 - $20^{\circ}C$ and the increased temperature over $30^{\circ}C$ which is similar to the temperature characteristics of single LPB cell. This paper has analyzed the driving characteristics of LPB pack for bimodal tram is running with either battery mode or hybrid mode.

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