基于单片机的太阳能路灯的铅酸蓄电池的快速充电系统外文文献翻译.doc

原 文 Title：R CHARGE SYSTEM FOR LEAD-ACID BATTERY OF SOLAR ENERGY STREET LIGHT BASED ON SINGLE-CHIP MICROCOMPUTER 1. Introduction Our country is very rich in solar energy resources and the utilization of solar energy heat is one of the technologies that are of the highest commercial degree and the most universal application in new and renewable energy resources. Under the initiative of building saving society, the solar energy electro-optic illumination is our countrys realistic choice under the existing national condition and it reduces the expenditures of municipal administration on street lamp to a certain extent. Especially in the newly-built urban road section and remote border district that has difficulty in using electricity, it is of the strongest promotion and is taken seriously by Finance department; it is honored as the 21st centurys green project. 2. The basic theory of battery charging In the mid-1960s, American scientist Mas has done the massive experimental study to the charging-up process of ringent accumulator cell, and proposed acceptable charging curve taken by the accumulator by the lowest gas efficiency for premise, the curve function is i ??I 0 ??e ?∞?. The experiment indicated that if the charging current changes according to this curve,it may reduce the duration of charging greatly, and has not affect on batterys capacity and its life, thus it had established research direction to the method of the fast charging. is called the curve the best charge pattern in principle. It May see that the initial charging current is very big from the Mas curve, but weakens very quickly. The primary cause is that it comes into being the phenomenon of polarization during the process of charging. The phenomenon of polarization is refers to that the interior the sealed accumulator has produced the oxygen and the hydrogen during its process of charging, when the oxygen cannot be absorbed promptly, then it piles up on the positive plate, enlarge the pressure of the