Lead-acid batteries have great vitality and look forward to days with greater development
Battery base, and with the days to the Group Chairman of the Board of China's Zhang Tian any prospects for the development of new energy battery made the exchange and discussion, to group vice president Yang Yuanling day, deputy chief engineer Renan Fu, Chief Investment Officer Wang Zhikun and well-known Chinese experts in electrochemistry Dr. Cao Gaoping join the discussion. Academician Yang believes that from the state, national interests and economic development to take into account the overall development of China's new energy battery. Good prospects for the future development of lithium batteries, but the main problem is that the battery safety and compliance rate, lead-acid batteries in the field of electric vehicles and energy storage battery accomplish much, the key is to continue to make technological progress and environmental protection .
Lead-acid batteries have great vitality, there will be new as
Academician Yang introduced, lead-acid batteries through 150 years without failure, in the nickel - cadmium batteries, nickel - hydride batteries, lithium ion batteries, new battery has been launched in several decades, still firmly occupy the majority of market share; China annual output of nearly 20 million electric bicycles, most equipped with lead-acid batteries; the world's various locomotive, every car is a piece of lead-acid batteries, they are not. In addition to its technology is mature, inexpensive cell cheap, safe outstanding advantages of the traditional, with its competition in recent years in the development of many new technologies are closely related, such as three-dimensional and two-dimensional structure of the electrode and the whole sealed, tubular, Horizontal and other new structures; use the new lead alloy electrode, can promote the gradual increase in specific energy and cycle life of up to 4500 times. Lead-acid "super battery" is also one of them the latest technology. Therefore, lead-acid batteries are not outdated, lead-acid battery technology.
What is a lead-acid "super battery"? The so-called lead-acid "super batteries", UltraBattery, is the super capacitor in parallel with the use of lead-acid batteries (can be called "external and"), evolution is "in and" is the double-layer capacitors with high specific power, long life the advantages of integration into the lead-acid batteries, while maintaining the "outside and" increase the power, extend battery life while the merits, but also simplify the circuit and improve the specific energy, and reduce the total cost. It has been great development in China's electric bicycles and electric vehicles is starting, will have a huge economic and social benefits. Lead-acid "super cell" There are two key technologies, one for high-performance capacitance in sulfuric acid electrolyte carbon, and second capacitor anode of carbon and lead compound.
In a combination of new technology, lead-acid battery energy density can be increased to 60-80wh/kg, power can be increased to 600-700w, which is close to lithium battery technology indicators.
863 should support the development of lead-acid battery technology
Recently, the U.S. President Barack Obama announced 2.4 billion dollars funding 48 projects to support the development of the United States, "the next generation of battery and electric car" production, including lead-acid batteries, were arranged $ 34,300,000 and $ 32,500,000 to support the two companies Lead the development of "super cells" project. Remarkably, the plan does not mention hydrogen batteries and fuel cells.
Academician Yu-Sheng Yang called it "a monk from the Scriptures", to move China's "Buddha", is no longer biased against lead-acid batteries should be solid support for a lead-acid batteries. Academician Yang suggested that China's 863 plan should be clear support for lead-acid "super batteries", not hesitation. To this end, he suggested the Government to produce 45 million yuan (equivalent to U.S. 1 / 10), support the 2,3-producing - research portfolio, coupled with 1:1 matching funds of enterprises, with two years to develop lead-acid "Super Battery" and capacitance of carbon, and formed a certain scale of production capacity. This is to address the financial crisis, the best one of the measures to stimulate domestic demand.
Lithium is the future direction of development, but the technology still needs to be improved
Academician Yang that lithium is a good direction, but we must first solve the problem of security and compliance rates.
The safety of lithium has been concern for everyone. 2009 cell phone lithium battery exploded in China, 7, 3 people died, technically speaking, mobile phone lithium battery is relatively simple, with no serial, parallel problems. It is understood that the energy of lithium is probably the phone 2wh, according to international statistics, one ten-millionth the probability of an explosion, but a bus is probably the energy of lithium batteries 20 million wh, if you press the number of hours and mobile phone Li-watt battery, the probability of explosion may be one per cent, which can not be ignored. Lithium battery industry is to really solve the security problem, otherwise the consequences will be unimaginable. In the end is pretty important, or important to safety, industry professionals should pay attention.
The second problem is the passing rate of lithium batteries. In addition to large-capacity lithium-ion battery technology to enhance, but also further enhance the rate of quality.
The most energy saving electric car
Bottleneck in the development of electric vehicles is the concept, rather than simply technology. In various types of electric vehicles, the biggest advantage of pure electric vehicles: one without oil, 1 million electric cars per day to replace 1 million tons of gasoline; Second, pollution-free; Third, all costs (purchase price + energy prices ) may be lower than fuel vehicles; Fourth, simple, non-oil and water, use, and easy maintenance; Fifth, the battery can be used at night cheap "Valley Electric" and the existing power line charging, not only to promote the "Valley Electric" (mainly nuclear power and wind power), for the grid "distributed peaking", but also save a lot of funding for building energy storage power station.
Leapfrog China should give priority to the development of a single charge can travel 150-200 kilometers of pure electric vehicles.
In addition, the used battery electric vehicles have a variety of development, all kinds of batteries to be "beyond the exhibition and fair competition."
Lead-acid storage batteries in the field of new energy scale has an advantage in competition
On China's new energy development, Academician Yang pointed out that the field of lead-acid battery energy storage in the size of the competition advantage. In the field of new energy storage batteries, the industry has completed a long cycle life for lead-acid battery power storage system test. The system is connected with the overall power supply system, the peaking operation. Test the power storage system, three units were the maximum power of 100kW, 100kW, 400kW, continuous operation of the two and a half, not a battery voltage drop, the voltage difference increases and other issues, the system runs well. Identified lead-acid battery power storage system is practical.
Meanwhile, the development of new energy storage battery cost and life must be considered, lead-acid battery performance and stability, and cheaper prices. Chemistry Institute of Chemical Defense military power of China Research and Development Center has ten years of military batteries, the battery needs of the accumulation of proof, the overall research, technology development experience, particularly concerned about the development of large-scale energy storage battery technology, especially the recommended lead-acid battery The application in this field.
Lead-acid battery industry to focus on pollution prevention and control of lead
When it comes to lead-acid batteries that people often will say, there are environmental problems of lead. In fact lead-acid battery is the highest rate of all varieties of batteries, and lead production process of large enterprises has also been strictly controlled. To effectively solve the problem of lead ore mining and smelting of lead battery recycling waste, acid pollution; as long as serious and responsible step up environmental protection departments, enterprises attach importance to the implementation of environmental protection measures, the problem is not difficult to resolve.
Current lead battery industry should strive to achieve from lead mining, battery production, recycling of old batteries closed operation, this can minimize lead contamination. Why did not pollute the environment of nuclear power concern, because the raw materials of nuclear power to the recovery of uranium from mining, the whole process of environmental protection have done well. Lead-acid battery industry chain can learn from the experience of nuclear power production.
Another new lead-acid "super cell" within the existing lead-acid battery much less than, longer life but also reduce the workload of regeneration, which are of direct benefit to reduce lead contamination.
Lead-acid battery production equipment to achieve domestic
Finally, the Academician Yang comes to lead-acid batteries made equipment problems. He said that now the new lead-acid batteries (such as tubular cells) and the old equipment, a lot of battery recycling business or the use of imported equipment. Expensive imported equipment, prevented large-scale application. Chinese battery company in the import of equipment, be sure to consider the localization of the equipment as soon as possible. Imports of equipment at home is a good opportunity, but also to promote technical progress in China battery industry opportunities. Equipment prices down, companies can use the advanced equipment does not produce pollution. Lead-acid battery industry in China who want to work together, from mining to the old battery recycling throughout the process, as soon as there are plans to promote the equipment in China.
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