Using Charge Circuit and Rechargeable Battery Extend the Electric Power Ages of Battery

• Main Author: 李榮欽
• Other Authors: 翁琳松
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/59837328538513550223

碩士 === 明新科技大學 === 電子工程研究所 === 99 === Since the Italian researcher Alexandro G.A.A. Volta (1745-1827) invented the battery at about 1800, people have benefited greatly from the convenience provided. However, the enormous use of batteries also brought an invisible threat to earth. The large variety of personal electronic products in the consumer markets in recent years has led to an enormous increase in dry battery use. Under the goal of achieving energy saving and carbon reduction, the use of personal electronic products does indeed prove to be a negative contrast. When using dry batteries, the voltage will weaken after extended use, similar to the situations of light bulbs growing dim or toy motors slowing down. Most users would throw away the old battery for a new replacement by this time. Thus, in order to utilize the remaining electrical energy of the battery for effective use, this study proposed an extracting system that includes a charging circuit with a rechargeable battery. The charging circuit extracts the electric energy from ordinary dry batteries, and stores it within the “rechargeable batteries”, making the energy available for use. The extraction process extracts more from dry batteries by continuing and extending the duration of chemical reactions within the batteries, and leaves less energy behind. With a more efficient electrical energy extraction, dry batteries would be able to contribute more energy and extended usage before being discarded. This will lower the use of dry batteries and achieve the objectives of energy saving and carbon reduction. Currently, various countries in the world and Taiwan do not have a professional research into the re-extraction of remaining energy in used dry batteries. Usable energy of dry batteries comes from its internal composition and a chemical reaction that gives off energy. When dry batteries are inserted or combined with different external loads, significant amounts of stored electrical energy are left inside which can only be provided slowly to the external load. However, most external loads of dry batteries require a large voltage to operate. As a result, once the internal resistance of the dry battery becomes too large or the internal chemical reaction becomes too slow, the battery will no longer be able to provide electrical power to the load, forcing the user to discard and replace the battery. By adopting the electrical energy extraction circuit, which can extract remaining electrical energies from batteries with high internal resistances or slowing electro-chemical reactions, we can give batteries a longer life until it has little or no electrical energy left. The proposed method will extend a battery’s energy-life by at least 20%. According to the estimates of the Environmental Protection Administration of Taiwan, annual use of dry batteries is about 9,392 metric tons. If only AA batteries are used for common civilian use, then over 540 million batteries are used annually. An extension of battery life of 20% would translate into 108 million batteries saved per year, and provide significant help in the efforts to save energy and reduce carbon emissions.