Britain developed a micro-engine is expected to replace the battery
June 17, University of Birmingham announced that manufacturing and mechanical engineering university college lecturer, Chinese scientists led by Dr. Jiang Kaichun research group developed a micro-engine is only a few millimeters in size. Do not look at this small enough to be placed on the engine cover nails look like much, but the energy provided is 300 times that of ordinary batteries.
To understand the results of this study the situation, the reporter interviewed Dr. Jiang Kaichun.
About their research results, Jiang Kaichun showed great interest. He says that when they designed this engine's main purpose is to replace the traditional battery. Since the battery 发明, despite the miniaturization of electronic devices and portable and has played an important role, but the charge capacity of batteries is limited, so that electronic equipment Wei Liao continued work Bixujingchang replace or recharge in energy Persistence and Lianxu Xing Gong Ying there are some restrictions on gasoline and other fuels in this regard carbohydrates showed a clear advantage. In the development of the engine before they have specialized in different types of batteries and fuel were compared to results found in the weight of the same case, gasoline, hydrogen and other fuels to provide energy carbohydrates, 300 times the average for the battery. This means that the same is to supplement the primary energy, using micro-motor-driven device, battery-powered device than a much longer working hours.
In addition, it has been calculated to create the energy consumption of a battery than the battery itself provides 2000 times the energy of a large, if the processing of used batteries consider the energy consumption, then the battery life up costs. In contrast, micro-engine is much simpler, as long as it is added to a fuel, it can continuously work months or even a year or two. Not only eliminates the need for frequent battery changes or recharging the battery trouble, and the device itself could be more compact and lightweight.
On the engine design and manufacture, Jiang Kaichun said micro-engine manufacturing is very different from conventional engines. Conventional engine is usually full of noise produced by the plant in, but micro-engine is in the universities and research institutions in the clean room finished. They are now developing a kind of micro-internal combustion engine, this engine developed by U.S. scientists in different micro-turbine engine, the internal temperature is much higher. In order to withstand the engine running as high as 1,000 degrees Celsius resulting heat, they selected materials in the manufacture of alumina and silicon carbide. Both materials can be resistant to temperatures above 1,500 degrees Celsius, which was provided to ensure the safe operation of the engine.
As the micro-engine compact, and some internal components only a few microns, so the production process, they have adopted similar with the production of large scale integrated circuit technology. The difference is that required components do large scale integrated circuits as small as possible, but use the same process of production engines, you need bigger parts as possible. Because of fuel combustion in the engine requires a certain space, space is too small will not ignite the fuel, which requires the engine components to maintain a certain size. To achieve this, they use a lot of new technology. One of the most unique features is their "big thick layer of light plastic processing" technology. Using this technology, and now they have to process the material thickness is about 1 mm, which is very advanced world. In order to meet the needs of different devices, scientists can also output power of this engine to adjust. Approach is not a production of engines of different sizes, but the number of the same specifications as the engine output to connect different energy. For example, for mobile phones provide enough energy may be an engine, providing power for the laptop you need to put together a number of engines to work Caixing.
Micro-engine wide range of applications, in addition to mobile phones and portable computers can replace the battery, the military, medical and engineering manufacturing and other fields have wide applications. For example, with the increase in portable electronic devices, this should be traveling light soldiers will now have to carry more than 30 kg backpack in front of the war, including at least 1 / 8 load is designed to provide energy for the electronic equipment batteries. Some used for reconnaissance and liaison aircraft and micro-micro-robots as they have to carry heavy batteries and their role in severely affected. If these heavy batteries for micro-engines, their efficiency will be greatly changed. In the medical field, this engine also has a vast battlefield. Scientists, they can be installed in the diabetes and heart disease patients with medical devices, using them to provide lasting power, timing in vivo delivery of insulin for diabetics or people with heart pacemakers to provide energy. In addition, pharmaceutical, chemical manufacturing and processing, micro-mechanical components, this engine has great potential.
Therefore, Jiang Kaichun this engine is very optimistic about the prospects for development. He believes that this research is likely to first use the mobile phone industry. With the constant improvement of engine performance, six years later, the laptop computer and mobile phone battery will be gradually replaced by micro-engines, which will supply energy for portable devices have a profound impact.
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