Partager l'article ! The development of electric vehicles, lithium-supply tight: The development of electric vehicles, lithium-supply tight Germany 9 issued a research rep ...
Hamburg, Germany, Institute of World Economics and Berenberg Bank jointly issued by the challenges facing the automotive industry reported that the lithium-ion battery technology is currently developed into electric and hybrid electric vehicle application prospects of the most extensive technical, but also in maximum range, energy density, safety, charging time and size, and so there is still great potential for development. Date, no other material can replace the lithium battery technology in the car's special status. In the long run, which could result in supply shortages and price of lithium to rise significantly.
Reported that, at present mainly in Chile, panasonic CGA-DU21 battery Argentina and other South American countries and China, Tibet, the total recoverable reserves of lithium ore is estimated that only 400 million tons, while the current global annual mining capacity lithium reached more than 90,000 tons.
Car battery demand is relatively high, high specific energy, high specific power, fast charge and has a depth of discharge function, circulation and long service life, the biggest bottleneck
constraints of electric vehicles is the battery. From the use of point of view, lead-acid batteries as a relatively mature technology, mass production, its high cost-effective and high-rate
discharge characteristics, but the specific energy, specific power and energy density are relatively low.
Ni-MH battery safety performance than the lithium batteries is better, but the lithium battery a higher energy density and cycle life. At present, the domestic panasonic VW-VBD210
battery lithium battery production enterprises more, especially the rapid development of lithium iron phosphate batteries.
At present, more and more researchers use lithium-ion battery electric vehicles as a motive power batteries, because the lithium-ion battery has the following advantages: a high voltage, which is
equivalent hydride nickel-cadmium batteries - nickel batteries three times; than the energy of large, up to 165WH / kg, nickel-hydrogen batteries three times; size small; the quality of light;
cycle life long; self-discharge rate is low; no memory effect; no pollution. If the use of lithium-ion batteries, hard to reduce the cost of electric vehicles. Lithium iron phosphate battery is
also a lithium battery, its specific energy less than half of lithium cobalt oxide batteries, but its high security, cycles can reach 2000 times, discharge stability, panasonic PV-BP17
battery cheap, a new car with power options.
In addition to increase the lithium battery research, business is also set out to find a new breakthrough in battery power. Currently BYD electric vehicle using battery power is called the "ET-POWER" iron motive power batteries, it is BYD latest achievements in the battery area. Iron battery raw materials, a broad, non-polluting, recyclable, its heat resistance, resistance to stress and capacity are far stronger than ordinary batteries, battery charge of up to 2000 cycles over the battery life of more than 60 continuous miles kilometers. To F3DM, for example, in pure electric mode can be life 100 panasonic NV-DS30 battery kilometers.