|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||320/22 ; 320/32 ; 320/39 ; 320/48|
|우선권정보||JP-0046812 (1990-02-27); JP-0046814 (1990-02-27)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 22 인용 특허 : 0|
A voltage setting value for charging a battery starts from a first constant voltage level less than a full battery voltage and after a period of time the battery voltage reaches that first level and the charging current begins to decrease. The charging current decrease is detected and the voltage value is increased to a next constant voltage level and the process is repeated until the constant voltage level is reached that equals the full battery voltage. Each time the voltage level is changed the corresponding percentage of the battery voltage is displa...
A charging apparatus in which a secondary battery is charged by a constant voltage and a charging level is detected, comprising: charging voltage means for selectively producing battery charging voltages of different voltage levels; voltage setting means for selecting a voltage setting value in said charging voltage means for charging said secondary battery by successive, different constant voltage levels and detecting means for detecting changes of current at said different constant voltage levels and producing an output indicating the charging amount f...