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54 条记录 (耗时 0.021 秒)

    Current leakage detection in high voltage battery pack
    3.
    发明申请
    Current leakage detection in high voltage battery pack 有权
    高压电池组中的电流泄漏检测

    公开(公告)号：US20040004481A1

    公开(公告)日：2004-01-08

    申请号：US10447042

    申请日：2003-05-28

    发明人： Jizeng Jin

    IPC分类号： G01N027/02

    CPC分类号： H01M10/482 ,  H01M6/42 ,  H01M10/052

    摘要： A method of detecting leakage currents in a high voltage battery pack system reduces detection error caused by fluctuations in battery pack voltage during the detection process. The voltages of the individual modules forming the battery pack are separately and simultaneously measured during each measurement of leakage current on the high and low sides of the leakage point. Measurements of individual module voltages are combined with the simultaneous current leakage measurements to calculate leak resistance.

    摘要翻译： 检测高压电池组系统中的泄漏电流的方法减少了在检测过程中电池组电压波动引起的检测误差。 在泄漏点的高低侧的每次测量泄漏电流期间，单独并同时测量形成电池组的单个模块的电压。 单个模块电压的测量与同时的电流泄漏测量结合以计算泄漏电阻。

    Method and device for detecting a current
    4.
    发明申请
    Method and device for detecting a current 失效
    用于检测电流的方法和装置

    公开(公告)号：US20030146756A1

    公开(公告)日：2003-08-07

    申请号：US10354975

    申请日：2003-01-31

    发明人： Masaki Yugo ,  Minoru Gyoda ,  Hiroshi Egi

    IPC分类号： G01N027/02

    CPC分类号： G01R31/3606 ,  G01R19/0092 ,  G01R19/2509

    摘要： In the method for detecting a current, the current is detected by a first current sensor in a predetermined sampling period as a digital value, and is detected by a second current sensor in a period longer than the first current sensor with high accuracy as a digital value. In the method for detecting a current, the current during detecting-incapable time period, which is incapable of detecting the current during detecting timing for detecting the current during the predetermined period by the second current sensor, is complemented with the current value detected by the first current sensor,

    摘要翻译： 在用于检测电流的方法中，电流由预定采样周期中的第一电流传感器检测为数字值，并且以比第一电流传感器长的第二电流传感器以高精度的时间被第二电流传感器检测为数字 值。 在用于检测电流的方法中，在由第二电流传感器在预定时段期间检测电流的检测定时期间不能检测电流的无检测时间段期间的电流与由第二电流传感器检测到的电流值互补 第一电流传感器，

    Circuit arrangement for operating an exhaust-gas probe
    5.
    发明申请
    Circuit arrangement for operating an exhaust-gas probe 失效
    用于操作排气探头的电路装置

    公开(公告)号：US20030011373A1

    公开(公告)日：2003-01-16

    申请号：US09737603

    申请日：2000-12-18

    发明人： Siegbert Steinlechner ,  Bernd Schumann

    IPC分类号： G01N027/02

    CPC分类号： G01N27/419

    摘要： The invention is directed to a circuit arrangement for operating an exhaust-gas probe including a NOx double chamber sensor. The exhaust-gas probe includes: a heatable solid-state electrolyte body having first and second pump chambers and diffusion barriers for separating the chambers from each other and from the exhaust gas. A third chamber communicates with the atmosphere. An external pump electrode is exposed to the exhaust gas and a first oxygen pump electrode is disposed in the first pump chamber. A second oxygen pump electrode is disposed in at least one of the first and second pump chambers and a nitrogen oxide pump electrode is disposed in the second pump chamber. An air reference electrode is disposed in the third chamber. Only one pump voltage generating circuit unit is provided and a switching device switches the pump voltage generating circuit unit between respective ones of the pump electrodes. The pump voltage generating unit functions to generate, in a controlled manner, all of the voltages applied to the pump electrodes in dependence upon respective reference voltages.

    摘要翻译： 本发明涉及一种用于操作包括NOx双室传感器的排气探头的电路装置。 排气探头包括：具有第一和第二泵室的可加热固态电解质体和用于将腔室彼此分离和与废气分离的扩散阻挡层。 第三个房间与大气层通信。 外部泵电极暴露于废气，第一氧泵电极设置在第一泵室中。 第二氧泵电极设置在第一和第二泵室中的至少一个中，并且氮氧化物泵电极设置在第二泵室中。 空气参考电极设置在第三室中。 仅提供一个泵浦电压产生电路单元，并且开关装置在泵电极之间切换泵浦电压产生电路单元。 泵电压产生单元用于以受控的方式产生根据各个参考电压施加到泵电极的所有电压。

    Method for measuring water content of fuel cell based on conductivity of electrolyte
    6.
    发明申请
    Method for measuring water content of fuel cell based on conductivity of electrolyte 失效
    基于电解质的电导率测量燃料电池的含水量的方法

    公开(公告)号：US20020180448A1

    公开(公告)日：2002-12-05

    申请号：US10151195

    申请日：2002-05-20

    发明人： Tomonori Imamura ,  Toshiyuki Kawai ,  Kunio Okamoto

    IPC分类号： G01N027/02 ,  H01M008/08

    CPC分类号： H01M8/04089 ,  G01N27/048 ,  H01M8/04119 ,  H01M8/04291 ,  H01M8/0435 ,  H01M8/04365 ,  H01M8/04388 ,  H01M8/04395 ,  H01M8/0441 ,  H01M8/04455 ,  H01M8/0447 ,  H01M8/04507 ,  H01M8/04522 ,  H01M8/04529 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04649 ,  H01M8/04708 ,  H01M8/04753 ,  H01M8/04835 ,  H01M8/04992

    摘要： A measuring method first calculates the conductivity of an electrolyte membrane based on measured output voltage and output current of a fuel cell. The water content of an oxidant channel as an index of present water content (PWC) of the fuel cell is calculated based on the calculated conductivity and the other measured physical quantities of the fuel cell. Further the method calculates the water content of the oxidant channel after the inside of the fuel cell reaches a steady state as an index of future water content (FWC) using the measured physical quantities. The PWC index and FWC index are compared, and it is finally determined, based on the result of the comparison and the difference between the previous and present values of the conductivity, whether the water content of the fuel cell is short or excessive at the present time.

    摘要翻译： 测量方法首先基于测量的燃料电池的输出电压和输出电流来计算电解质膜的电导率。 基于所计算的电导率和燃料电池的其他测量物理量，计算作为燃料电池的当前含水量（PWC）的指标的氧化剂通道的水含量。 此外，该方法使用测量的物理量计算燃料电池内部达到稳定状态之后的氧化剂通道的含水量作为未来含水量（FWC）的指标。 比较PWC指数和FWC指数，最终根据比较结果和电导率的先前和现在值之间的差异，确定燃料电池的含水量是否短或过量 时间。

    Sensor and sensor system for liquid conductivity, temperature and depth
    7.
    发明申请
    Sensor and sensor system for liquid conductivity, temperature and depth 有权
    传感器和传感器系统用于液体导电性，温度和深度

    公开(公告)号：US20020135377A1

    公开(公告)日：2002-09-26

    申请号：US10010936

    申请日：2001-12-06

    申请人： Arete Associates

    发明人： Guy J. Farruggia ,  Allan B. Fraser

    IPC分类号： G01N027/02

    CPC分类号： G01N27/06 ,  G01N33/18

    摘要： Liquid conductivity and temperature are measured in respective sensitivity fields that are collocatednulli. e., in volumes that nearly match by mathematical, geometrical, or functional criteria. Collocation is as distinct from mere adjacency or proximity; and is with respect to measurement volumes, not measuring hardware. Preferably pressure too is measured with sensitivity very generally collocated to the conductivity and temperature sensitivity. Preferably, respective temporal/spatial bandwidths of the two (or three) sensors are matched. Preferably the pressure sensor is a MEMS transducer, the conductivity sensor is a four-terminal device, the thermometer is a thermistor encapsulated in a silkscreened glass wall, and circuits (1) compensate for time lag between conductivity and temperature measurement, (2) remove artifacts due to detritus in or near either sensor, and (3) derive secondary parameters of the liquid.

    摘要翻译： 液体电导率和温度是在相应的灵敏度场测量的。 即数量，几乎与数学，几何或功能标准匹配。 搭配与邻近或接近不同; 并且是关于测量体积，而不是测量硬件。 优选地，也通过灵敏度来测量压力，这通常与电导率和温度敏感性相关。 优选地，两（或三个）传感器的相应时间/空间带宽相匹配。 优选地，压力传感器是MEMS传感器，电导率传感器是四端子装置，温度计是封装在丝网玻璃壁中的热敏电阻，电路（1）补偿电导率和温度测量之间的时滞，（2）去除 任何一个传感器内或附近的碎屑产生的伪影，以及（3）得到液体的二次参数。

    Electrochemical impedance spectroscopy apparatus and method of use thereof
    9.
    发明申请
    Electrochemical impedance spectroscopy apparatus and method of use thereof 审中-公开
    电化学阻抗谱仪及其使用方法

    公开(公告)号：US20040212370A1

    公开(公告)日：2004-10-28

    申请号：US10421243

    申请日：2003-04-23

    发明人： Robert F. Cunningham ,  Charles R. Coleman

    IPC分类号： G01N027/02

    CPC分类号： G01N27/026

    摘要： An electrochemical impedance spectroscopy apparatus includes a conduit having a first conductive probe positioned therein. One end of the conduit is coupled in a fluid tight manner to a surface of an electrically conductive object or a coating thereon whereupon an electrolyte solution disposed in the conduit is in fluid communication with the first conductive probe and the surface or the coating. A second conductive probe outside the conduit is moved into electrical contact with the object, either directly or via the coating. An AC signal applied between the first and second conductive probes is swept between a first frequency and a second frequency. A characteristic or property of the surface and/or the coating is determined from the response thereof to the swept AC signal.

    摘要翻译： 电化学阻抗谱分析装置包括具有定位在其中的第一导电探针的导管。 导管的一端以流体密封的方式联接到导电物体或涂层的表面上，其中设置在导管中的电解质溶液与第一导电探针和表面或涂层流体连通。 导管外部的第二个导电探针可以直接或通过涂层与物体电接触。 施加在第一和第二导电探针之间的AC信号在第一频率和第二频率之间扫描。 表面和/或涂层的特性或性质根据其对扫描AC信号的响应来确定。

    System, apparatus, and method for measuring an oxygen concentration of a gas
    10.
    发明申请
    System, apparatus, and method for measuring an oxygen concentration of a gas 有权
    用于测量气体的氧浓度的系统，装置和方法

    公开(公告)号：US20040149008A1

    公开(公告)日：2004-08-05

    申请号：US10699182

    申请日：2003-11-01

    发明人： Klaus K. Allmendinger

    IPC分类号： G01N027/02 ,  G01R027/02

    CPC分类号： G01N27/419

    摘要： An apparatus, system and method maximizes efficiency and accuracy of measuring an oxygen concentration of a measured gas by varying a flow of oxygen ions within a measuring cell (202) in accordance with an output signal of an oxygen sensor cell (206). The pump current (208) through a pump cell (204) is switched between a constant positive current and a constant negative current when upper and lower thresholds of the output signal are reached. The pulse width ratio of the square wave produced by the varying current is compared to a pulse width ratio function derived from a calibration procedure to determine the oxygen concentration of the measured gas.

    摘要翻译： 装置，系统和方法通过根据氧传感器单元（206）的输出信号改变测量单元（202）内的氧离子的流动来最大化测量测量气体的氧浓度的效率和精度。 当达到输出信号的上限和下限阈值时，通过泵浦单元（204）的泵浦电流（208）在恒定的正电流和恒定的负电流之间切换。 将由变化电流产生的方波的脉冲宽度比与由校准程序导出的脉冲宽度比函数进行比较，以确定测量的气体的氧浓度。