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    • 3. 发明授权
    • Atmospheric explosive battery protection circuit having a robust protection system
    • 大气爆炸电池保护电路具有强大的保护系统
    • US07068012B1
    • 2006-06-27
    • US11169837
    • 2005-06-29
    • Michael D. GerenJennifer K. CollierJohn E. Herrmann
    • Michael D. GerenJennifer K. CollierJohn E. Herrmann
    • H01M10/46
    • H01M10/443H01M2/348H01M10/48H02J7/0031
    • A battery protection circuit is provided that includes current monitoring circuit. The current monitoring circuit senses current flowing from a rechargeable cell. When the current exceeds a maximum value, the current monitoring circuit actuates, whereby opening a transistor. The transistor has a resistor coupled in parallel. When the transistor opens, current is forced through the resistor coupled in parallel with the transistor, thereby limiting the current to a maximum value. When the voltage across the resistor exceeds a predetermined threshold, an overcurrent condition is simulated in the lithium ion protection IC. The overcurrent condition causes a disconnect switch to open, thereby disconnecting the cell(s) from the external terminals. The circuit additionally includes three current blocking elements coupled between charging terminals and the cells to ensure that fault conditions occurring within the charger do not adversely affect the performance of either the cells or a host electronic device.
    • 提供了包括电流监视电路的电池保护电路。 电流监视电路感测从可再充电电池流出的电流。 当电流超过最大值时,电流监控电路启动,由此打开晶体管。 晶体管具有并联耦合的电阻器。 当晶体管断开时,电流被强制通过与晶体管并联耦合的电阻,从而将电流限制到最大值。 当电阻上的电压超过预定阈值时,在锂离子保护IC中模拟过电流条件。 过电流状态导致断开开关断开,从而将电池从外部端子断开。 电路还包括耦合在充电端子和电池之间的三个电流阻塞元件,以确保在充电器内发生的故障状况不会不利地影响电池或主机电子设备的性能。
    • 5. 发明授权
    • Polyphase motor control system
    • 多相电机控制系统
    • US5041768A
    • 1991-08-20
    • US336474
    • 1989-04-12
    • John E. Herrmann
    • John E. Herrmann
    • H02P6/08
    • H02P6/085
    • In a three phase full wave type brushless DC motor control system, the neutral (common) terminal (15) is connected to the positive terminal (14A) of a battery (14) with the negative battery terminal (14B) connected to ground comprising a reference terminal (27) for the control system. Pairs of upper and lower controllable switching drive devices (21A-22A, 23B-24B, 25C-26C) are utilized to control current in windings (13A-13C) of the motor (13). Diodes (29-34) are connected across each of the switching devices for handling inductive transient signals. An effective storage capacitor, preferably comprising individual storage capacitors (36-38) connected across each pair of switching devices, is used to store a boost voltage, above battery voltage, which is generated by inductive transient signals. This configuration not only returns inductive energy in the windings to the battery and/or other windings in the motor, but also substantially reduces radiated noise and conducted noise and therefore provides less battery voltage ripple.
    • 在三相全波型无刷直流电动机控制系统中,中性(公共)端子(15)连接到电池(14)的正极端子(14A),负极电池端子(14B)连接到包括一个 用于控制系统的参考端(27)。 上下两个可控开关驱动装置(21A-22A,23B-24B,25C-26C)被用来控制马达(13)的绕组(13A-13C)中的电流。 二极管(29-34)连接在每个开关器件上,用于处理感应瞬态信号。 一个有效的存储电容器,优选地包括连接在每对开关器件上的各个存储电容器(36-38),用于存储高于电感电压的升压电压,该升压电压由感应瞬态信号产生。 该配置不仅将绕组中的感应能量返回到电动机中的电池和/或其他绕组,而且还显着降低辐射噪声和传导噪声,并因此提供较少的电池电压纹波。
    • 6. 发明授权
    • DC power switch with inrush prevention
    • 直流电源开关,防浪涌
    • US5030844A
    • 1991-07-09
    • US542622
    • 1990-06-25
    • Edward LiJohn E. Herrmann
    • Edward LiJohn E. Herrmann
    • H02H9/00H03K4/00H03K17/00H03K17/082H03K17/16H03K17/567
    • H03K17/164H02H9/001H03K17/0822H03K17/168H03K17/567H03K4/00H03K2217/0036Y10S323/908Y10T307/76Y10T307/918
    • A DC power switch (10) for a capacitive load (11) has a main transistor (Q1) in series with the load between positive and negative DC bus terminals (B.sup.+, B.sup.-). A secondary transistor (Q2) and a resistor (R.sub.1) are connected in series and this series connection is connected in parallel to the main transistor (Q1). A control circuit (20; 50) is connected to the main and secondary transistors (Q1, Q2) and controls them. In response to an enable signal (26), the secondary transistor (Q2) is initially turned on such that it and the resistor provide the initial charging current for the capacitor load (11) and subsequently the secondary transistor is turned off and the main transistor is turned on such that it provides the subsequent current required by the load. This configuration minimizes the power dissipation ratings required for the transistors while balancing this requirement with the relative rapid providing of charging current for the capacitive load. Fault detection circuitry (30-33) makes sure both the main and secondary transistors are off and interrupts the supply of DC power to the load (11) in the event of a detected fault.
    • 用于电容性负载(11)的DC电源开关(10)具有与正和负DC总线端子(B +,B-)之间的负载串联的主晶体管(Q1)。 二级晶体管(Q2)和电阻(R1)串联连接,该串联连接与主晶体管(Q1)并联。 控制电路(20; 50)连接到主晶体管(Q1和Q2)并控制它们。 响应于使能信号(26),次级晶体管(Q2)最初导通,使得其和电阻器为电容器负载(11)提供初始充电电流,随后次级晶体管截止,并且主晶体管 被打开,使得它提供负载所需的后续电流。 这种配置最大限度地降低了晶体管所需的功耗额定值,同时平衡了这一要求,同时为电容性负载提供充电电流。 故障检测电路(30-33)确保主和次级晶体管关断,并在检测到故障时中断负载(11)的直流电源供应。
    • 10. 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。