Technology Development for High Efficiency High Power Density EV DC - DC Converter

高效率高功率密度EV DC-DC转换器技术开发

• 批准号: 549915-2020
• 负责人: Liu, YanFei
• 金额: $ 6.99万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721206
• 关键词: Technology; Development; Efficiency; Power; Density

Greenhouse gas (GHG) traps the earth's heat and contributes to global warming. Electric Vehicles (EVs) can play a very important role in supporting Canada's GHG reduction goals under the Paris Agreement. Canada has set the ambitious goal of 100% new vehicles sold in Canada to be EVs by 2040. To meet this goal, smaller and highly efficient EV DC - DC converters are needed to help EVs achieve lighter weight and higher energy efficiency. One of the major factors to slow EV's adoption rate is the limited driving range. This research project focuses on reducing the energy needed for driving by lightening the weight carried by the EV (reducing the weight / size of the power converters) and increasing efficiency. This project will develop the technologies to simultaneously achieve both goals by designing a high power (3,800W), high efficiency, and high power density DC - DC converter, which will convert the high voltage (~330V) from the high power battery to low voltage (~14V) for information processing and auxiliary power in the EV. Switch-Controlled-Capacitor (SCC) technology will be applied to LLC resonant converters to achieve current sharing and interleaving operation of the resonant converters. When SCC - LLC technology is combined with the next generation GaN (Gallium Nitride) switches, the proposed EV DC - DC converter will more than double the power density and reduce the power loss by 50% as compared with existing products.Upon the completion of this project, the Canadian companies will be able to produce the smallest EV DC - DC converter with the highest efficiency. It will establish the Canadian companies in a leading position as suppliers in the booming EV market. It will also expedite the adoption rate of EVs.

温室气体 (GHG) 会吸收地球的热量并导致全球变暖。电动汽车 (EV) 在支持加拿大根据《巴黎协定》实现温室气体减排目标方面可以发挥非常重要的作用。加拿大制定了雄心勃勃的目标，即到 2040 年加拿大销售的新车 100% 为电动汽车。为了实现这一目标，需要更小、更高效的电动汽车 DC-DC 转换器，以帮助电动汽车实现更轻的重量和更高的能效。减缓电动汽车采用率的主要因素之一是有限的行驶里程。该研究项目的重点是通过减轻电动汽车的重量（减少电源转换器的重量/尺寸）和提高效率来减少驾驶所需的能量。该项目将开发同时实现这两个目标的技术，通过设计高功率（3,800W）、高效率和高功率密度的DC-DC转换器，将高功率电池的高电压（~330V）转换为低电压。电压（~14V）用于电动汽车中的信息处理和辅助电源。开关控制电容器（SCC）技术将应用于LLC谐振转换器，以实现谐振转换器的均流和交错操作。当SCC-LLC技术与下一代GaN（氮化镓）开关相结合时，所提出的EV DC-DC转换器与现有产品相比，功率密度将提高一倍以上，功率损耗将降低50%。通过这个项目，加拿大公司将能够生产出体积最小、效率最高的EV DC-DC转换器。它将确立加拿大公司在蓬勃发展的电动汽车市场中作为供应商的领先地位。它还将加快电动汽车的采用率。