公开(公告)号：US5691624A

公开(公告)日：1997-11-25

申请号：US639098

申请日：1996-04-24

申请人： Sang-tae Im ,  Hwan-Ho Seoung ,  Byung-Cho Choi

发明人： Sang-tae Im ,  Hwan-Ho Seoung ,  Byung-Cho Choi

IPC分类号： G01R19/165 ,  G01R31/36 ,  H01M10/44 ,  H02J7/00 ,  H02J7/10 ,  H01M10/46 ,  H01M10/48

CPC分类号： H02J7/0081 ,  G01R19/16542 ,  G01R31/3627 ,  Y10S320/21

摘要： Secondary batteries, also called rechargeable batteries, are subject to damage from overcharging during rapid charging. A fully-charged condition of a battery undergoing recharging, for example a NiCd or NiMH battery, is detected by a signature drop in battery voltage called a negative delta voltage (NDV). Low-cost analog circuits and methods are disclosed for detecting the NDV. Op amp circuits are arranged to charge one capacitor while the battery voltage is rising to determine a peak voltage, and charge another capacitor while the battery voltage is falling below the peak voltage. The second capacitor voltage is compared to a reference voltage to determine when the battery voltage drop exceeds a predetermined NDV, indicating a fully-charged battery. The invention is useful in battery chargers, battery conditioners, and the like.

摘要翻译： 也称为可充电电池的二次电池在快速充电期间会因过充电而受到损坏。 通过称为负三角洲电压（NDV）的电池电压的签名下降来检测进行再充电的电池的完全充电状态，例如NiCd或NiMH电池。 公开了用于检测NDV的低成本模拟电路和方法。 运算放大器电路被布置为在电池电压上升以确定峰值电压时对一个电容器充电，并且当电池电压低于峰值电压时对另一个电容器充电。 将第二电容器电压与参考电压进行比较，以确定电池电压下降何时超过预定的NDV，表示充满电的电池。 本发明在电池充电器，电池调节器等中是有用的。

公开(公告)号：US5717311A

公开(公告)日：1998-02-10

申请号：US639088

申请日：1996-04-24

申请人： Sang-Tae Im ,  Hwan-Ho Seoung ,  Byung-Cho Choi

发明人： Sang-Tae Im ,  Hwan-Ho Seoung ,  Byung-Cho Choi

IPC分类号： H02J7/10 ,  H01M10/34 ,  H01M10/44 ,  H01M10/46 ,  H02J7/00 ,  H02J7/02 ,  H02M3/28 ,  H02J7/04

CPC分类号： H01M10/46 ,  H02J7/0081 ,  H02J7/022 ,  H01M10/345 ,  Y10S320/22

摘要： A battery charging device for providing a fast charging a rechargeable battery and controlling the charging process to prevent overcharging. The battery charging device detects a decrease in the voltage of the rechargeable battery as it is being charged and approaches a full charge, and modulates the switching of a switching power supply supplying current to the rechargeable battery in response thereto. The battery charging device has a first resistor in series with the rechargeable battery which is to be charged, a power supply which charges the rechargeable battery, a charging control unit which detects a decrease in the voltage across the rechargeable battery using capacitors and which outputs battery condition signals and battery error signals in response thereto, and a power supply control unit which accepts a mode change signal and a battery error signal from the charging control unit and outputs a control signals for controlling the power supply.

摘要翻译： 一种电池充电装置，用于对可再充电电池进行快速充电并控制充电过程以防止过充电。 电池充电装置在充电时检测可再充电电池的电压的降低，并且接近完全充电，并响应于此对可再充电电池供电的开关电源的开关进行调制。 电池充电装置具有与要充电的可再充电电池串联的第一电阻器，为可再充电电池充电的电源;充电控制单元，其使用电容器检测可再充电电池两端的电压的降低，并且输出电池 条件信号和电池错误信号;以及电源控制单元，其从充电控制单元接收模式改变信号和电池错误信号，并输出用于控制电源的控制信号。