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    • 3. 发明授权
    • Power fault battery protection circuit
    • 电源故障电池保护电路
    • US06903533B1
    • 2005-06-07
    • US10737021
    • 2003-12-16
    • Michael D. GerenRoger L. BoyerJohn E. HerrmannJenny Collier
    • Michael D. GerenRoger L. BoyerJohn E. HerrmannJenny Collier
    • H02J7/00
    • H02J7/0031H02J2007/0039
    • A battery protection circuit is provided that includes a safety circuit and an overpower circuit. The safety circuit monitors the voltage and current of at least one rechargeable cell within the battery pack, and disconnects the cell(s) from the external terminals of the battery pack when either the voltage becomes too high or low, or when excessive current is being drawn from the battery pack. The overpower circuit monitors the power being delivered to or sourced from the battery pack to the load. The overpower circuit actuates when the power exceeds a predetermined threshold, thereby simulating an overcurrent condition in the safety circuit. The overcurrent condition causes a disconnect means, like a transistor, to open, thereby disconnecting the cell(s) from the external terminals. The battery protection circuit then latches in this disconnected state until a load is removed from the terminals of the battery pack.
    • 提供一种电池保护电路,其包括安全电路和过功率电路。 安全电路监视电池组内的至少一个可再充电电池的电压和电流,并且当电压变得过高或过低时,或者当电流过大时,将电池从电池组的外部端子断开 从电池组中抽出。 过功率电路监测从电池组输送或从电池组提供给负载的电力。 当功率超过预定阈值时,过功率电路启动,从而模拟安全电路中的过电流状况。 过电流状态导致诸如晶体管的断开装置打开,从而将电池从外部端子断开。 然后电池保护电路锁定在该断开状态,直到从电池组的端子移除负载。
    • 9. 发明授权
    • Method for rapid charge control in lithium batteries
    • 锂电池快速充电控制方法
    • US06859014B2
    • 2005-02-22
    • US10322263
    • 2002-12-17
    • William C. BohneJohn E. Herrmann
    • William C. BohneJohn E. Herrmann
    • H02J7/00H02J7/04H02J7/16
    • H02J7/0073H02J7/0004H02J7/042
    • This invention includes a method for charging lithium-based batteries. Battery type is identified by a charger by way of a third terminal. For nickel-based cells, the third terminal is coupled to a thermistor for sensing temperature. For lithium-based cells, the third terminal is coupled to the rechargeable cell disposed within the battery pack. If a nickel cell is identified, the cell is charged by conventional means. If a lithium cell is identified, the charger applies a full current until any serial elements disposed between the battery pack terminals and the cell reach a high impedance state. The charger then reduces the charging current to a low level for a predetermined time. After this time has elapsed, the charger then reapplies a high current. If the voltage across the serial elements remains low, charging continues. However, if the voltage across the serial elements exceeds a predetermined threshold, the charger then decrements the current by a predetermined amount.
    • 本发明包括一种锂基电池的充电方法。 电池类型由充电器通过第三个端子识别。 对于镍基电池,第三端子耦合到用于感测温度的热敏电阻。 对于锂基电池,第三端子耦合到设置在电池组内的可充电电池。 如果镍电池被识别,则电池通过常规方式充电。 如果识别出锂电池,则充电器施加全电流,直到设置在电池组端子和电池之间的任何串联元件达到高阻抗状态。 然后,充电器将充电电流降低到低电平达预定时间。 在这段时间过去之后,充电器然后重新应用高电流。 如果串行元件上的电压保持不变,则继续充电。 然而,如果串联元件两端的电压超过预定阈值,则充电器将电流减小预定量。