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스마트 교통 체계 적용을 위한 배터리 교체형 전기버스의 주행 성능 시험
고재윤(Jaeyoon Ko),김정용(Jungyong Kim),최웅철(Woongchul Choi),이상준(Sangjun Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
A research on the driving performance test of the electric bus with a battery swapping system is presented in this paper. For a successful and smooth operation of the battery swappable electric bus, there are two critical infrastructures among many others. Firstly, since the battery swappable electric bus is operated in conjunction with a Quick Changing Machine (QCM) which are installed at predefined locations, it is important to satisfy the specifically targeted mileage per battery change. Secondly, as wireless communication technologies for the intelligent operation of the battery swappable electric bus along with the QCM are applied, it is significant to establish the redundant reliability of the information system that is related to management of the battery status, the electric bus status and the QCM status in terms of the system integration. In this paper, along with the description of the battery swappable electric bus and the related infrastructures, actual driving performance data is presented and discussed. Finally, based on the results of the directly measured acceleration and driving performance of the battery swappable electric bus, direction for the further research is presented.
스마트 교통 체계를 위한 배터리 교체형 전기버스 개조 차량 개발
고재윤(Jaeyoon Ko),김정용(Jungyong Kim),최웅철(Woongchul Choi),이상준(Sangjun Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
The research on the electric bus with a swappable battery is introduced in this study. Currently, efforts for the reduction of carbon emissions across all of the industries around the world are spreading due to global warming. For that matter, utilization of electric vehicles increases in the transportation sector, which account for about 20% of total carbon emissions. In an effort to promote the wider use of electric vehicle, many legislative efforts are being conducted. However, the use of electric vehicle is spreading rather slowly than expected due to charging time of the battery. In this paper, the battery swappable electric bus technology in conjunction with a Quick Changing Machine (QCM) for battery charging and swapping is presented. Also, wireless communication technology for the smart transportation system is presented. To solve the problem of battery charging time, the battery swappable electric bus can be a suitable choice for an effective electric public transportation system.
대중교통에 활용하기 위한 배터리 교체형 전기버스의 개조에 대한 고찰
고재윤(Jaeyoon Ko),차웅철(Woongchul Choi),허승진(Seungjin Heo),정재일(Jayil Jeong) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
The research on the electric bus(E-Bus) with replaceable battery is introduced in this study. Currently, the spread of electric vehicle(EV) is moving rather slowly than expected due to various reasons. One of the major stumbling block is a lack of charging infrastructure to support the easy recharging of the battery. In an effort to promote the wider use of EV for greener environment, many legislative efforts are being conducted. Recently, EV application to public transportation attracts major attention since the bus routes are known for each course and therefore, the electric powertrain and the energy storage system(ESS) for EV can be optimized to its maximum efficiency. However, even under this favorable condition of the public transportation, a major deficiency of EV such as a long recharging time still exists. In order to address this problem, an E-Bus with a replaceable battery system is being studied along with a battery change infrastructure. Number of scenarios have been evaluated and one of the recommended system is being discussed in the paper. An E-Bus with a quick battery change module, named as Quick Top Pick-up(QTP) is converted from an existing compressed natural gas (CNG) bus. The QTP module for the battery replacement is mounted on top of the roof panel replacing the CNG tank which is no longer in use. This paper reports the preliminary results from the conceptual design stage of the E-Bus concept with a replaceable battery system, named as QTP E-Bus, along with the battery change infrastructure, named as Quick Changing Machine (QCM). Future direction and works for the implementation of the QTP E-Bus is also presented.
스마트 교통 체계 적용을 위한 배터리 교환형 전기버스의 배터리 교환 메커니즘
김정용(Jungyoung Kim),고재윤(Jaeyoon Ko),최웅철(Woongchul Choi),이상준(Sangjun Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Over the last few decades, consistent effort to reduce the major cause of global warming, carbon emission, has been made in many areas. Since the transportation sector has been identified as one of main contributor to the issue, tremendous effort has been made to replace conventional vehicles with low or zero carbon emission vehicles such as hybrid, plug-in hybrid, electric and fuel cell vehicles. In the area of mass transportation application, similar efforts are made. However, typical electric bus with a fixed battery system has a critical limitation of battery recharging time due to the limited energy density of the battery to be used as a inner-city transportation system. Therefore, as an alternative, a smart electric bus with a swappable battery system integrated with a quick top pick-up (QTP) has been developed and discussed in this paper. While there are number of core systems to make the smart electric bus system to function harmoniously and flawlessly, in this paper, a focus has been made to present the details of the battery swapping mechanism which would resolve the major issue of long battery charging time by simply swapping an energy depleted battery with a fully charged battery at a quick change machine (QCM). Also, the communication protocol between the QTP and the QCM is presented as well to promote the better understanding of the fully integrated solution. The QCM is strategically located along the bus route for convenience. At the end of the discussion, plans for future development are provided as well.