Whether for power vehicles, wind turbines, or a variety of household appliances, as a magnetic field conversion of mechanical and electrical energy motor device is the most important component. Traditional motors generate magnetic field by means of electric current, which is called electric excitation. Another way is with a flexible magnet that doesn't require extra energy to generate a magnetic field. This so-called flexible Magnets motor has no excitation winding and dc excitation power supply, with simpler structure, more reliable operation, less loss and more extensive application, which has become a hot pursuit in the field of investment.
A core part of the flexible Magnets motor is a flexible magnet material that generates magnetic fields in the surrounding space without the need for additional energy. Among all flexible Magnets, NdFeB has the highest performance and is currently the most commonly used material. The ferrite Flexible Magnets are the most commonly used magnetic material, second only to the NdFeB.
The flexible Magnets are the driving force for industrial development
The NdFeB offers more excellent performance than materials such as the samarium cobalt flexible Magnets, which were developed earlier, and the raw materials aren't as scarce or expensive as the metals such as samarium and cobalt. When this came in, the use of the rare earth flexible Magnets material shifted from more sophisticated fields such as aerospace to industrial and civil motors. Currently,NdFeB flexible Magnetsflexible Magnets have been widely used in markets such as hard disk coil motors (VCM), DVD drives, and mri devices, but the biggest driver for this market development in the future will come from the emergence of a low-carbon economy.
The low carbonization of the automobile industry was the largest engine driving the growth in demand for the NdFeB flexible Magnets. At present, most of the flexible Magnets in high performance NdFeB flexible Magnets are used for the main power motors of hybrid electric vehicles (HEV) worldwide. According to the source, a Toyota prius hybrid used more than 2 kg of NdFeB flexible Magnetsflexible Magnets for the main drive motor. Kearney, a consultancy, predicts that hybrid cars will account for 17% of global car production by 2020. Then, based on a rough estimate, the annual demand for the NdFeB flexible Magnets alone in the future for the main power motor of the hybrid vehicle alone will exceed 24,000 tons. In contrast, as one of the main application areas of the NdFeB flexible Magnets, the market for hard disk coil motors had an annual demand not exceeding 20,000 tons.
In addition to using electricity to replace traditional fuel oil as power, the development of lightweight cars can reduce a lot of energy consumption, which is also the trend of the low-carbon era. At present, each car is equipped with an average of more than 40 motors, and even more than 100 micromotors are used in luxury cars, among which there are not many NdFeB flexible Magnetsflexible Magnets motors. When you replace all these car motors with the NdFeB flexible Magnetsflexible Magnets motor, you will lose 40% weight for the car. Even if the application ratio of NdFeB flexible Magnetsflexible Magnets in all types of motor vehicles is increased to 50%, an average of 0.5 kg of NdFeB flexible Magnets is needed for each vehicle. Based on the global annual production of 53 million vehicles in 2009 (under 3.5 tons), the corresponding NdFeB flexible Magnetsflexible Magnets will have a material requirement of more than 30,000 tons.
Another new requirement for the NdFeB flexible Magnetsflexible Magnets material and motor market comes from the flexible Magnets market for direct drives. The flexible Magnets direct-drive fan has no gearbox so that the wind wheel and the motor rotor are coupled directly. Direct drive fans are more popular in offshore wind markets because they do not require complicated gearbox maintenance. Therefore, the launch of offshore wind power market at home and abroad will greatly enhance the demand for it. According to a study by the China wind energy association, the worldwide market share of flexible Magnets in direct-drive fans will increase from 20% in 2009 to 50% in 2014, with China in line with the world. Then, according to the demand for 1.2 tons of NdFeB flexible Magnetsflexible Magnets materials from a 1.5-megawatt flexible Magnets direct drive, the global demand for NdFeB flexible Magnets in the wind power field in 2014 will be 25,000 tons.
The requirement for the NdFeB flexible Magnetsflexible Magnets and the motor in the field of energy saving household appliances could not be ignored, in which the first one was the promotion of variable frequency air conditioning which could adjust the refrigeration speed according to the change of indoor temperature. In recent years, the proportion of variable frequency air-conditioners produced with NdFeB flexible Magnetsflexible Magnets increased rapidly. According to the forecast of China home appliance association, by 2015, 90% of the market will be occupied by variable frequency air conditioners. By using the NdFeB flexible Magnetsflexible Magnets material 0.25kg per air conditioner on average, the demand for the NdFeB flexible Magnets in the Chinese variable frequency air conditioning market alone in 2014 was nearly 6000 tons. In addition, the market such as energy-saving TV, energy-saving freezer is hiding likewise huge potential.
The strong demand for flexible Magnets motors, whether in power cars, direct-drive fans, or energy-saving household appliances, gave rise to this market undercurrent. An investor bluntly, the potential of this market is no less than the new energy investment field hot LED market.