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    • 4. 发明申请
    • ELECTROCHEMICAL DEVICE
    • 电化学装置
    • US20140197797A1
    • 2014-07-17
    • US14153510
    • 2014-01-13
    • SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    • Shunpei YAMAZAKI
    • H02J7/00
    • H02J7/0029H01M10/0525H01M10/44H02J7/0068H02J7/041H02J2007/105
    • To prevent deterioration of a battery or reduce the degree of deterioration of a battery and to maximize charge and discharge performance of the battery and maintain charge and discharge performance of the battery for a long time. A reaction product formed on an electrode surface causes various malfunctions and deterioration of a battery typified by a lithium-ion secondary battery. The present inventors have found a breakthrough technological idea that a reaction product is prevented from being deposited on an electrode in charging or discharging or a formed reaction product is dissolved by application of an electrical stimulus to an electrochemical device that operates utilizing an electrochemical reaction, typified by a lithium-ion secondary battery. Specifically, the reaction product is dissolved by supplying a signal (inversion pulse current) with which a current flows in the reverse direction of a current with which a reaction product is formed.
    • 为了防止电池劣化或者降低电池的劣化程度,并且使电池的充放电性能最大化,并且长时间保持电池的充放电性能。 形成在电极表面上的反应产物引起锂离子二次电池所代表的电池的各种故障和劣化。 本发明人已经发现了一种突破性的技术思想,即防止反应产物在充电或放电中沉积在电极上,或者形成的反应产物通过对电化学反应进行电刺激而溶解,所述电化学装置使用电化学反应 通过锂离子二次电池。 具体地说,反应产物通过提供电流沿与反应产物形成的电流相反的方向流动的信号(反转脉冲电流)而溶解。
    • 10. 发明申请
    • Battery Protection and Zero-Volt Battery Recovery System for an Implantable Medical Device
    • 可植入医疗器械的电池保护和零伏电池恢复系统
    • US20070129768A1
    • 2007-06-07
    • US11550872
    • 2006-10-19
    • Yuping HeDavid Peterson
    • Yuping HeDavid Peterson
    • A61N1/378
    • A61N1/378A61N1/08A61N1/37A61N1/3787H01M10/44H02J7/00H02J7/025H02J7/041H02J50/10H02J2007/105
    • Circuitry useable to protect and reliably charge a rechargeable battery, even from a zero-volt state, is disclosed, and is particularly useful when employed in an implantable medical device. The circuit includes two charging paths, a first path for trickle charging the battery at a relatively low current when the battery voltage is below a threshold, and a second path for charging the battery at relatively higher currents that the battery voltage is above a certain threshold. A passive diode is used in the first trickle-charging path which allows trickle charging even when the battery voltage is too low for reliable gating, while a gateable switch (preferably a PMOS transistor) is used in the second higher-current charging path when the voltage is higher and the switch can therefore be gated more reliably. A second diode between the two paths ensures no leakage to the substrate through the gateable switch during trickle charging. The load couples to the battery through the switch, and preferably through a second switch specifically used for decoupling the load.
    • 公开了用于保护和可靠地对可再充电电池进行充电的电路,即使是从零伏状态,并且当用于可植入医疗装置时特别有用。 该电路包括两个充电路径,当电池电压低于阈值时,第一路径用于以相对低的电流对电池进行涓流充电;以及第二路径,用于以相对较高的电流对电池充电以使得电池电压高于某一阈值 。 在第一涓流充电路径中使用无源二极管,即使当电池电压太低以至于可靠的选通时也允许涓流充电,而当第二高电流充电路径中使用可选择的开关(优选为PMOS晶体管)时 电压较高,因此开关更可靠地选通。 在两个路径之间的第二个二极管确保在滴流充电期间通过可切换开关不会泄漏到衬底。 负载通过开关耦合到电池,并且优选地通过专门用于去耦负载的第二开关。