Lithium iron phosphate battery will lead the new energy automotive industry
10000 UFJ Securities analysts believe that the new energy research group, Ni-MH battery technology is mature, the purchase and use of lower cost, but with difficult to overcome the shortcomings of the lithium iron phosphate battery will lead the new energy future of the automobile industry.
According to China Securities Journal reported June 2, 10000 UFJ Securities analysts believe that the new energy research group, the new energy automotive industry chain, the main part of the new energy vehicle manufacturing, power batteries and power battery materials, among which the most promising lithium iron phosphate power battery cathode materials, investment opportunities, are not optimistic about the transition of products as a mild hybrid vehicle nickel metal hydride batteries.
Hybrid cars and electric vehicles generally, including the composition of the batteries, drive motor, motor speed control systems, battery management system and the body of five parts. Electric drive and control system is hybrid and electric vehicles at the heart of the biggest different from the internal combustion engine vehicle differences. Electric drive and control system consists of power supply, drive motor and motor speed control device so on. System, the most critical component is the motive power.
Power compaq evo n620c battery performance, cost and safety, will largely determine hybrid vehicles and pure electric vehicles, the development process, while the performance, cost and safety have also determined the motive power line, the prospects for various technologies.
Moreover, the power battery technology breakthroughs that may bring the whole industry chain development of new energy, wind power, nuclear power, solar energy, power peaking, new energy vehicles are inseparable from the motive power batteries, power batteries will be a variety of new energy storage able tool for moving energy to replace oil as the main supply of equipment.
Hybrid vehicles and electric vehicle power batteries include lead-acid batteries, nickel metal batteries, lithium-ion batteries, high-temperature sodium batteries, metal-air battery, super capacitor, flywheel batteries, as well as a more long-term fuel cells and solar cells. The current mainstream technology is the application of lead-acid batteries, nickel-metal hydride batteries, lithium-ion battery.
Depends on the economic benefits of power compaq presario 2100 battery life, battery cycle life, such as up to less than 1,000 times more than the advantages of electric vehicles will not be reflected. Battery cycle life is not a single cell, therefore, the consistency of the battery, power management system to use is very important. Another key factor in cost reduction in the electrode material.
Electric cars on the basic requirements of power batteries can be summarized as follows: (1) high energy density; (2) high power density; (3) a longer cycle life; (4), good charge-discharge performance; (5 ) batteries good consistency; (6) lower price; (7) use and easy maintenance.
Ni-MH battery technology is currently the most mature, the purchase and use of lower cost, does not change people’s driving habits, is the HEV market, the mainstream products. Ni-MH battery positive and negative respectively, nickel hydroxide and hydrogen storage alloys, there is no heavy metal pollution, and its course of their work does not appear in the electrolyte changes in the phenomenon, the compaq presario 2500 battery sealed design can be achieved.
However, the nickel-metal hydride battery with a difficult to overcome the shortcomings, the memory effect to the nickel-metal hydride battery inconvenience. Memory effect refers to the battery charging and discharging process, the battery pole plate produces many small bubbles and over time, these bubbles will reduce the size of the battery plates, but also indirectly affect the battery capacity. Ni-MH battery memory effect and rechargeable fever and other aspects of the direct impact to the battery. In addition, Ni-MH battery self-discharge rate, less than the energy can only be used in HEV, the presence of these shortcomings Ni-MH battery can only be a transitional product.
90 years developed high-capacity rechargeable battery, will be better than nickel-metal hydride batteries is stored more energy than the energy of large, long cycle life, self-discharge rate is small, no memory effect and environmental pollution. Lithium-ion compaq presario r3000 battery cathode material is lithium cobalt oxide, lithium manganese oxide and lithium iron phosphate, etc., the negative electrode of carbon material. According to lithium-ion batteries used in different electrolyte materials, lithium-ion batteries can be divided into liquid lithium-ion battery and polymer lithium-ion battery two categories, power lithium batteries include lithium cobalt oxide batteries, nickel-lithium batteries, lithium manganese batteries, phosphorus acid iron lithium batteries, because the raw materials, cobalt, nickel, high prices and pollution are serious, lively performance, easy to explode the current into the battery industry, concentrated in the low-cost lithium-manganese lithium iron phosphate power battery and power battery.
As the automotive lithium-ion batteries are bulky, its heat dissipation worse, security, sharp decline in the importance of how to resolve the issue. The most commonly used lithium cobalt oxide-ion batteries in large-scale, there would overheat and catch fire or explosion risk, relatively speaking, for the manganese oxide cathode material of lithium and lithium iron phosphate lithium-ion battery and better safety performance. In addition, the liquid organic electrolyte lithium-ion battery components for the carbonate, a low flash point, boiling point is low, is an extremely strong oxidizing compounds, the negative is extremely strong reducing compound, when the battery internal pressure is too large or overheating, it will cause an explosion, or a shell burst in contact with air due to high temperature and high-lithium anode ignited a lively fire. Polymer lithium-ion compaq presario v4000 battery safety is better.
From a technical maturity of speaking, lithium manganese oxide material is more mature, but the safety of lithium iron phosphate, and cost. Lithium iron phosphate material in the United States and Canada, has achieved mass production, domestic enterprises BYD, Tianjin Stellan, Shenzhen Bei Terui, Shenzhen Tianjiao such small quantities.
Determines the capacity of the battery powered electric vehicle life, the nickel-metal hydride batteries battery capacity is 70-80wh/kg, lithium-ion battery is 150-200wh/kg, the latter is two times higher than the former. Charging the battery life and memory effect determines the battery performance, Ni-MH battery charge life span of only 500-700 times, life rechargeable lithium-ion batteries are 800-2000 times, which will greatly affect the cost. Both the extent of environmental pollution are very few. Ni-MH battery safety performance is better, the safety of lithium-ion battery performance is poor, but the lithium iron phosphate lithium-ion compaq presario v5000 battery have improved significantly. The final cost comparison, the energy efficiency of conventional cars converted for 50 $ / kWh, but the need for oil, nickel-metal hydride battery hybrid electric vehicle converted into the energy efficiency of 300-700 $ / kWh, lithium-ion battery electric vehicles, energy efficiency of conversion for 180-220 $ / kWh, without oil. Thus, in the long term, industrial development must be lithium-ion battery electric vehicles. If the Ni-MH battery hybrid electric vehicle market, short-lived, its valuation to be low.
Every electric car has about 200-300 kilograms of lithium batteries, lithium batteries they need 60 kilograms of lithium iron phosphate, an annual output of 1 million electric cars would require 60,000 tons per year lithium iron phosphate. However, the current global production capacity to be investigated is 1,500 tons, the potential supply and demand gap is very large, leading to lithium iron phosphate profit margins as high as 70%. In contrast, ordinary new energy vehicles, only 20% of the profit margin, moving
Li Battery margin of 30% to 40%, the battery materials, profit margins are highest in the cathode material is currently the lithium compaq presario v2000 battery industry chain of development.
A global supplier of lithium iron phosphate, including the United States A123, Valence, Canada Phostech, Taiwan’s long garden of energy, Li Kai electricity, Hisashi precision and macro Seto technology. In 2008 the world’s supply is only 1,500 tons, the biggest supplier is A123, the supply of 750 tons, domestic manufacturers supply only a few hundred tons. To statistics from the public point of view, the compaq presario 1700 battery National lithium iron phosphate production capacity of about 6,400 tons of vendors, but the actual volume of births far lower than the capacity of a few, the market in short supply. The leading domestic manufacturers, including Tianjin, Stellan, Peking University first, Hunan Shanshan, Shenzhen Bei Terui, and Tianjiao technology.