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    • 6. 发明申请
    • METHOD AND SYSTEM FOR BATTERY CHARGING
    • 电池充电方法与系统
    • WO2005117231A8
    • 2008-05-02
    • PCT/US2005018534
    • 2005-05-24
    • MILWAUKEE ELECTRIC TOOL CORPJOHNSON TODD WROSENBECKER JAY JMEYER GARY DZEILER JEFFREY MGLASGOW KEVIN LZICK JONATHAN ABROZEK JEFFREY MSCHEUCHER KARL F
    • JOHNSON TODD WROSENBECKER JAY JMEYER GARY DZEILER JEFFREY MGLASGOW KEVIN LZICK JONATHAN ABROZEK JEFFREY MSCHEUCHER KARL F
    • H02J7/00H01M2/10H01M6/50H01M10/42H01M10/46H02J7/02
    • H01M2/1038H01M6/50H01M10/4207
    • A combination including a battery pack and a battery charger operable to supply a charging current to the battery pack. The battery pack includes a first battery terminal, a second battery terminal, and a battery cell having a present state of charge. The battery cell is coupled to at least one of the first battery terminal and the second battery terminal. The battery pack also includes a battery microcontroller coupled to at least one of the first battery terminal and the second battery terminal. The microcontroller is operable to measure the present state of charge of the battery cell to produce battery cell present state of charge measurements. The battery charger includes a first charger terminal configured to couple to at least one of the first battery terminal and the second battery terminal and a second charger terminal configured to couple to at least one of the first battery terminal and the second battery terminal. The first charger terminal is configured to supply charging current to the battery pack. The battery charger also includes a charger microcontroller coupled to the second charger terminal and operable to receive the battery cell present state of charge measurements from the battery microcontroller. The charger microcontroller is also operable to supply the charging current to the battery pack in pulses, wherein each pulse includes a first time interval where charging current is being supplied to the battery and a second time interval where charging current is being suspended from the battery. The microcontroller is further operable to modify the first time interval of a pulse based at least in part on the battery cell present state of charge measurements received from the battery microcontroller.
    • 包括电池组和电池充电器的组合,其可操作以向电池组提供充电电流。 电池组包括第一电池端子,第二电池端子和具有当前充电状态的电池单元。 电池单元耦合到第一电池端子和第二电池端子中的至少一个。 电池组还包括耦合到第一电池端子和第二电池端子中的至少一个的电池微控制器。 微控制器可操作地测量电池单元的当前充电状态,以产生电池单元当前的充电测量状态。 电池充电器包括被配置为耦合到第一电池端子和第二电池端子中的至少一个的第一充电器端子和被配置为耦合到第一电池端子和第二电池端子中的至少一个的第二充电器端子。 第一充电器端子被配置为向电池组提供充电电流。 电池充电器还包括耦合到第二充电器端子的充电器微控制器,并且可操作以从电池微控制器接收电池单元当前的充电测量状态。 充电器微控制器还可操作以脉冲向电池组提供充电电流,其中每个脉冲包括第一时间间隔,其中充电电流被提供给电池以及第二时间间隔,其中充电电流正在从电池暂停。 微控制器还可操作以至少部分地基于从电池微控制器接收的电池单元现在的电荷测量状态来修改脉冲的第一时间间隔。