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1. 发明授权

US4396880A Method and apparatus for charging a battery 失效
标题翻译：用于对电池充电的方法和装置
公开(公告)号：US4396880A
公开(公告)日：1983-08-02
申请号：US270824
申请日：1981-06-05
申请人： Robert W. Windebank
发明人： Robert W. Windebank
IPC分类号： G01R31/36 , H01M10/44 , H02J7/00 , H02J7/04
CPC分类号： H02J7/0085 , H01M10/44 , H02J7/0073 , Y10S320/13
摘要： A battery is charged by repeatedly alternating between test and charge cycles. During the test cycle, the dynamic voltage-current characteristic of the battery is obtained as a function of the charge condition of the battery. During the charge cycle, a gradually varying voltage is supplied to the battery, substantially without controlling the current supplied thereto, for a predetermined time. The rate at which this supplied voltage varies is related to the dynamic voltage-current characteristic obtained during the test cycle. Alternating between test and charge cycles continues until the dynamic voltage-current characteristic last obtained is substantially identical to the preceding dynamic voltage-current characteristic, whereupon the charging of the battery is terminated.
摘要翻译：电池通过在测试和充电循环之间反复交替进行充电。在测试周期期间，根据电池的充电状态获得电池的动态电压 - 电流特性。在充电循环期间，在预定时间内，基本上不向电池供应逐渐变化的电压。该供电电压变化的速率与在测试周期中获得的动态电压 - 电流特性有关。在测试和充电循环之间的交替持续，直到最后获得的动态电压 - 电流特性基本上与先前的动态电压 - 电流特性相同，于是终止电池的充电。

2. 发明授权

US4118658A Control circuit for shuttle car 失效
标题翻译：班车控制电路
公开(公告)号：US4118658A
公开(公告)日：1978-10-03
申请号：US790304
申请日：1977-04-25
申请人： John P. Salva , Gregory M. Mudzinski , John A. Mills , Shashi B. Dewan
发明人： John P. Salva , Gregory M. Mudzinski , John A. Mills , Shashi B. Dewan
IPC分类号： H02P7/00 , H02P7/29 , H02M7/68
CPC分类号： H02P7/29 , H02P7/05
摘要： A control circuit for use with a shuttle car used in mining operations and circuitry associated therewith. The control circuit generally comprises a chopper circuit in series with a reversing circuit and a traction motor which drives the shuttle car. The chopper circuit essentially comprises two separate current paths each through a separate set of silicon controlled rectifiers or SCRs and a common capacitor. A logic circuit controlled by the operator alternately gates the sets of SCRs thereby placing voltage across the traction motor. The magnitude of this voltage and hence the speed of the motor are directly proportional to the frequency of the gating pulses. The reversing section also employs two sets of SCRs and a common field inductance. The operator, through the logic circuit, triggers one set of SCRs and current flows through the field inductance in a forward direction causing the traction motor to operate in a forward mode. When the second set of SCRs are triggered, the current through the field inductance is reversed, and accordingly, the current through the motor will also be reversed causing it to reverse direction. Consequently, the chopper circuit controls the car's speed while the reversing circuit controls its direction. The control circuit is also provided with a power circuit which creates the voltage for the logic circuit as well as a pump motor circuit which controls the car's hydraulics and a conveyor motor circuit which controls the loading and unloading functions.
摘要翻译：用于采矿作业中使用的穿梭车和与其相关的电路的控制电路。控制电路通常包括与反转电路串联的斩波电路和驱动梭车的牵引电动机。斩波电路基本上包括两个单独的电流路径，每个电流路径分别通过一组单独的可控硅整流器或SCR和公共电容器。由操作者控制的逻辑电路交替地浇注SCR组，从而将电压跨越牵引电动机。该电压的大小以及因此电动机的速度与门控脉冲的频率成正比。反向部分还采用两组SCR和一个公共场电感。操作员通过逻辑电路触发一组SCR和电流在正向上穿过励磁电感，使牵引电动机以正向模式工作。当第二组SCR被触发时，通过场电感的电流反转，因此，通过电动机的电流也将反转，使其反向。因此，当逆变电路控制其方向时，斩波电路控制汽车的速度。该控制电路还具有电源电路，其产生用于逻辑电路的电压以及控制汽车液压的泵电机电路和控制加载和卸载功能的输送机电机电路。

3. 发明授权

US4433294A Method and apparatus for testing a battery 失效
标题翻译：用于测试电池的方法和装置
公开(公告)号：US4433294A
公开(公告)日：1984-02-21
申请号：US270823
申请日：1981-06-05
申请人： Robert W. Windebank
发明人： Robert W. Windebank
IPC分类号： G01R31/36 , G01N27/46
CPC分类号： G01R31/3627 , G01R31/3651 , Y10S320/13 , Y10S320/21
摘要： The operating condition and/or characteristics of a battery is tested by obtaining the dynamic voltage-current characteristic of the battery as a function of the charge condition thereof. A controllably varying charging current is supplied to the battery, and the voltage produced across the battery while that current is supplied is measured. The dynamic voltage-current characteristic is obtained as a function of the measured voltage and supplied current. This voltage-current characteristic is compared to predetermined voltage-current characteristics representing batteries of the type being tested in order to determine the operating condition and/or characteristics of the battery under test.
摘要翻译：通过根据其充电条件获得电池的动态电压 - 电流特性来测试电池的操作条件和/或特性。对电池供给可控地变化的充电电流，并且测量在供给电流时在电池两端产生的电压。获得动态电压 - 电流特性作为测量电压和供电电流的函数。将该电压 - 电流特性与表示所测试类型的电池的预定电压 - 电流特性进行比较，以便确定被测电池的工作状态和/或特性。

4. 发明授权

US4112286A Power circuit for induction heating 失效
标题翻译：感应加热电源电路
公开(公告)号：US4112286A
公开(公告)日：1978-09-05
申请号：US700601
申请日：1976-06-28
申请人： Arnold N. Alderman , Shashi B. Dewan
发明人： Arnold N. Alderman , Shashi B. Dewan
IPC分类号： H02M7/523 , H05B6/06 , H05B5/04
CPC分类号： H02M7/523 , H05B6/06
摘要： A power circuit for use in billet heating, surface heat treating and melting and protective circuitry associated therewith. The power circuit generally comprises a source of potential in series with a pair of inductances and an inverter module. The inverter module has two sections each comprised of a thyristor in parallel with a diode. A pair of series connected charging capacitors are connected across the source of potential and a load is connected from between the capacitors to between the two sections of the inverter module. Current flows through one thyristor, through the load and charges the capacitors. The capacitors discharge and a reverse current flows through the load and through the corresponding diode. This cycle is repeated then with the opposite section of the inverter module. A commutation failure protection circuit is provided which detects the voltage collapse condition accompanying a short circuit through the inverter module and when this occurs, it acts to shut off the thyristors. An open load detect circuit is provided which senses the voltage build up which occurs when the load is open, and this circuit also acts to shut off the thyristors should this happen. The power circuit also has a peak power detect circuit which compares the phasing of the voltage and current and enables the circuit to maintain operation at maximum power by inhibiting any frequency increase when resonance operation is achieved.
摘要翻译：用于坯料加热，表面热处理和熔化的电源电路以及与其相关联的保护电路。电源电路通常包括与一对电感和逆变器模块串联的电位源。逆变器模块具有两个部分，每个部分由与二极管并联的晶闸管组成。一对串联的充电电容器连接在电源上，负载从电容器之间连接到逆变器模块的两个部分之间。电流通过一个晶闸管，通过负载并对电容器充电。电容放电，反向电流流过负载并通过相应的二极管。然后用逆变器模块的相对部分重复该循环。提供换向故障保护电路，其检测通过逆变器模块伴随短路的电压崩溃状态，并且当发生这种情况时，其用于切断晶闸管。提供一种开路负载检测电路，用于检测当负载断开时发生的电压累积，并且如果发生这种情况，该电路也用于切断晶闸管。电源电路还具有峰值功率检测电路，其比较电压和电流的相位，并且使得电路能够通过在实现谐振操作时抑制任何频率增加来保持最大功率的操作。

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