Energy saving and new energy technology is one of the most potential technologies for human beings in the 21st century, and the increasingly mature new energy technology will also bring great changes to our lives.
The most important components of new energy electric vehicles are power batteries, electric motors and energy conversion control systems, and power batteries are the part with the highest technical threshold and the most concentrated profits in order to achieve high performance such as fast charging and safety. New energy vehicles have high requirements on batteries, which must have high specific energy, high specific power, fast charging and deep discharge performance, and require the lowest cost and longest service life.
The development of the battery industry has experienced a course from the earliest lead-acid batteries to nickel-cadmium batteries, and then to nickel-metal hydride batteries, lithium-ion batteries, solar cells, and fuel cells. These batteries have developed in a competitive environment, creating unique application fields and investment opportunities.
Nickel batteries include series of batteries such as nickel-cadmium batteries, Ni-MH batteries and nickel-zinc batteries. Ni-MH batteries have the advantages of mature high-power technology, good safety and reliability, high cycle utilization, and low cost. In addition to nickel-cadmium batteries being gradually replaced due to environmental protection factors, nickel-zinc batteries and Ni-MH batteries have been widely used in various electrical and electronic products such as power tools, electric toys, lighting fixtures, and mobile communications. Under the background of global consumption upgrade and industrial product upgrade, the requirements for cordless and portability of electrical appliances and power tools are becoming stronger and stronger, and the application fields of Ni-MH batteries are still expanding.
In particular, Ni-MH batteries have the advantages of mature high-power battery technology. With the global industrialization upgrade, higher and higher requirements are placed on the power, capacity and cycle life of industrial secondary batteries. Ni-MH batteries are used in the field of industrial batteries. In particular, Ni-MH batteries are gradually occupying a dominant position in the market in the field of high-power industrial power batteries.
Ni-MH power battery has just entered the mature stage. Ni-MH batteries are the only battery system that has been actually verified, commercialized and large-scale in the current hybrid electric vehicle system. system. The research report shows that 99% of the existing hybrid battery market share is Ni-MH batteries, and the representative of Ni-MH batteries commercialization is Toyota's Prius. At present, the world's major automotive power battery manufacturers mainly include Japan's PEVE and Sanyo. PEVE occupies 85% of the global market share of Ni-MH batteries for hybrid vehicles. The main commercial hybrid vehicles, such as Toyota's Prius, Alphard and Estima, and Honda's Civic, Insight, etc. all use PEVE's Ni-MH batteries.
In the development of new energy vehicles, Ni-MH batteries technology is the most mature. In the next three years after 2009, Ni-MH batteries will still be the mainstream of new energy vehicles. After that, Ni-MH batteries technology will be divided into three points with lithium iron phosphate and Ni-MH batteries. The world will be gradually replaced by lithium batteries and fuel cells after 5 years. Battery giants Panasonic and Sanyo also believe that it is impossible for lithium-ion power batteries to release 100% of the electrical energy at 20°C, and 89% of the electrical energy can be retained at 45°C for 480 days. Fourth, it is made of this material. The battery has a long service life. After 5000 cycles of charging and discharging, it can still store 80% of the electric energy. If the electric vehicle is charged and discharged twice a day, the battery life is about 10 years. Fifth, it has good internal safety and will not generate heat. Out of control, can completely solve the safety hazards of lithium battery use. Due to these excellent properties, this battery has been applied to the green car in the 2010 Shanghai World Expo, and the Ni-MH batteries will also be gradually replaced. Shide Southern Chemical Company said that electric vehicles are one of the development directions of new energy vehicles, and Southern Chemical will provide the best raw materials for lithium battery production in the Chinese market. In order to achieve localized production, Shide Southern Chemical applied to the German headquarters to invest in the establishment of a new factory in China to meet the demand for new materials in the rapidly developing Chinese lithium battery industry.
