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Battery technology: the key to the popularity of electric vehicles
Source: | Author:YCY | Published time: 2016-04-19 | 6304 Views | Share:
Global Energy Technology Roadmap Interpretation of the four


The International Energy Agency (IEA) was in the "Energy Technology Perspectives 2010" assume that if 2050 has 500 million electric vehicle (EV) and 800 million plug-in hybrid (PHEV) on the road, it will be a year worldwide 2.5 billion tons of carbon dioxide emissions. According to that the vision IEA published "EV and PHEV technology roadmap," by the year 2050, EV and PHEV annual sales will reach 50 million, to achieve a wide range of applications worldwide, significantly reduce greenhouse gas emissions and fossil fuel consumption.


Industry sources say, to achieve the ambitious vision 2050 sales target, countries need to sell as much as EV and PHEV in 2015 to 2020. By 2020, global EV and PHEV total annual sales of at least 5 million. The current problems to be solved include increasing the number of models, a variety of models and reasonable increase productivity, reduce costs and provide enough battery charging infrastructure. Among them, the lithium battery is the EV and PHEV need to focus on improvement of key technologies.


Roadmap pointed out the direction of future improvements in battery technology in three areas, namely, improving the battery storage capacity, increase the number of battery discharge cycles, improve durability of the battery. IEA forecast, after 2015, the development of new chemical batteries higher energy density and applied to all-electric driving range of EV and PHEV. The new battery cathode material for the application of high-capacity, stable alloy electrode and an electrolyte 5 volts.


It is understood that, at present, the US Department of Energy research is exploring several new lithium-ion battery chemistry support. Relates to a high-voltage lithium alloy anode material, lithium-sulfur batteries, lithium metal batteries lithium polymer battery research / / etc. These policies will accelerate and enhance the development and application of technology. In addition, it can enhance the energy density of new chemical battery cell design will bring important changes. This means that the energy storage system requires less active material, the battery cell and hardware components, these improvements will allow EV and PHEV lighter, smaller, and cheaper.


Roadmap also suggested that governments should strongly encourage and support those promising battery manufacturer, especially those manufacturers with innovative technologies, in order to ensure that the investment costs and risks will not hinder the construction and development of the battery manufacturer. In response to EV and PHEV increased production and capacity expansion, all manufacturers must ensure adequate battery and production materials. To avoid supply bottlenecks, lithium and rare earth supply and its cost should be concerned about is the mid-field.


It is noteworthy that, since the EV and PHEV need to meet different standards and its performance related to maximize market potential. Therefore, the car original cost, efficiency and cost of combustion, maintenance costs, electricity driving range, charging speed, carbon dioxide and pollutant emissions, and other performance indicators will EV and PHEV marketing play an important role. EV and PHEV should be made to achieve a similar size and use of internal combustion engine vehicles comparable levels of performance and value. Roadmap recommends short term to represent the establishment of a worldwide EV and PHEV features unified index.


According to IEA analysis, implementation of the road map to be successful, we need to coordinate the interests of all parties. For example, to ensure that EV and PHEV cost-competitiveness, provide sufficient charging infrastructure and to protect the power supply; attention to the study of users of consumer demand and consumer behavior, enhance data collection and analysis, in order to develop marketing strategies for the foundation and to assist the Government to develop proper industrial policy.


IEA also pointed out in the road map, Governments should strengthen cooperation to ensure the development of coherent direction, while taking the most efficient way to accelerate technological development. Particularly in shared technology research and development, charging infrastructure in areas such as hardware and software resources should be shared, countries discuss lithium material, the supply of rare earth metals and other outstanding issues. In addition, car manufacturers, battery manufacturers, power companies and other stakeholders need to work together with the government to achieve this goal.




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