目前,我国现有“大哥大”用户500万,成为世界第四大移动通信消费国。专家预测,到2000年将达到1800万户。大哥大用户的激增,对大哥大的充电问题提出了更高的要求。然而,目前市场上的充电器普遍采用恒流方式充电,弊病很多。不仅充电时间很长(一般充一次电要用3～4小时),而且容易产生“记忆效应”。这类充电器即使改为大电流充电,也会因出现过热过充现象而影响电池寿命。 At present, China’s existing “Big Brother” user 5 million, becoming the world’s fourth largest consumer of mobile communications. Experts predict that by the year 2000 it will reach 18 million. Big Brother users surge, the Big Brother charge raised a higher demand. However, the chargers currently on the market are generally charged by the constant current method, and have many disadvantages. Not only charging time is very long (generally charge a power to use 3 to 4 hours), but also prone to “memory effect.” Even if this type of charger to a large current charge, but also due to overheating phenomenon will affect the battery life.