Fuel cell system with constantly accurate impedance measurement
    1.
    发明授权
    Fuel cell system with constantly accurate impedance measurement 失效
    燃料电池系统具有不间断的阻抗测量

    公开(公告)号:US08241802B2

    公开(公告)日:2012-08-14

    申请号:US13212419

    申请日:2011-08-18

    IPC分类号: H01M8/04 G01R27/02 G01R25/00

    摘要: There is provided a fuel cell system in which a constantly accurate impedance measurement is made possible regardless of a response characteristic of the voltage converting device. A superimposed signal analysis section analyzes an impedance measuring signal after passing through a DC/DC converter to thereby notify a superimposed signal amplitude control section of an analysis result. A superimposed signal amplitude control section controls an amplitude value of the impedance measuring signal generated by a superimposed signal generating section based on the result notified from the superimposed signal analysis section.

    摘要翻译: 提供了一种燃料电池系统,其中不管电压转换装置的响应特性如何,都能够进行恒定精确的阻抗测量。 叠加信号分析部分分析通过DC / DC转换器之后的阻抗测量信号,从而向分析结果的叠加信号幅度控制部通知。 叠加信号幅度控制部根据从叠加信号分析部通知的结果来控制由叠加信号生成部生成的阻抗测定信号的振幅值。

    Voltage conversion device and vehicle
    2.
    发明授权
    Voltage conversion device and vehicle 有权
    电压转换装置和车辆

    公开(公告)号:US07715217B2

    公开(公告)日:2010-05-11

    申请号:US11886791

    申请日:2006-03-30

    IPC分类号: H02M3/24

    摘要: A DC/DC converter includes a reactor, IGBT devices, a dead time generation unit, and a DC-CPU. The dead time generation unit operates in response to a reference signal for a duty ratio, to output first and second activation signals provided with an inactive period corresponding to a dead time preventing both of the IGBT devices from conducting. The DC-CPU corrects a tentative duty ratio calculated as based on a voltage control value, in accordance with a value of a current flowing through the reactor, to output the reference signal. Preferably the DC-CPU associates the value of the current of the reactor with three states and when the value approaches a value at which a state transitions to a different state, the DC-CPU gradually switches a correction value.

    摘要翻译: DC / DC转换器包括电抗器,IGBT器件,死区时间生成单元和DC-CPU。 死区时间生成单元响应于占空比的参考信号而工作,输出提供有与死区时间对应的不活动时段的第一和第二激活信号,防止两个IGBT器件导通。 DC-CPU根据流过电抗器的电流的值,校正基于电压控制值而计算的暂定占空比,以输出参考信号。 优选地,DC-CPU将电抗器的电流的值与三个状态相关联,并且当该值接近状态转变到不同状态的值时,DC-CPU逐渐切换校正值。

    Electric Vehicle Control Apparatus
    3.
    发明申请
    Electric Vehicle Control Apparatus 有权
    电动车控制装置

    公开(公告)号:US20070227788A1

    公开(公告)日:2007-10-04

    申请号:US11579731

    申请日:2005-05-26

    申请人: Masahiro Shige

    发明人: Masahiro Shige

    IPC分类号: B60K1/00

    摘要: Control apparatus of an electric vehicle controls a power supply system of the electric vehicle equipped with a first direct current power supply apparatus for supplying direct current power to a traction inverter, and a second direct current power supply apparatus connected in parallel with the first direct current power supply apparatus via a DC/DC converter. This control apparatus is also provided with a relay for cutting off supply of power from the first direct current power supply apparatus to the traction inverter in synchronization with the operation of the self-protection circuit in the event that the self-protection circuit of the traction inverter operates as a result of overcurrents supplied by the first direct current power supply apparatus.

    摘要翻译: 电动车辆的控制装置控制配备有用于向牵引逆变器供给直流电力的第一直流电力供给装置的电动车辆的供电系统和与第一直流电并联连接的第二直流电力供给装置 电源设备经由DC / DC转换器。 该控制装置还具有继电器,用于在牵引力的自保护电路的情况下,与自保护电路的动作同步地切断从第一直流电源装置向牵引逆变器供电的继电器 逆变器由于由第一直流电源装置提供的过电流而工作。

    Fuel cell system and method for removing residual fuel gas
    4.
    发明申请
    Fuel cell system and method for removing residual fuel gas 审中-公开
    燃料电池系统和除去残余燃料气体的方法

    公开(公告)号:US20060216555A1

    公开(公告)日:2006-09-28

    申请号:US11438277

    申请日:2006-05-23

    IPC分类号: H01M8/18

    摘要: A fuel battery system capable of quickly consuming residual hydrogen gas even if a surplus power consumption means has a limitation. During shutdown of the system, a fuel battery (10) is made to generate power by using the surplus fuel gas to charge a secondary battery (41), and non-storable surplus power is consumed by consumption means (22, 33, 13). When the surplus power generated by the fuel cell is consumed by the consumption means, any limitation in the system is detected, and the power generated by the fuel battery is changed depending on the detected limitation.

    摘要翻译: 能够快速消耗残留氢气的燃料电池系统,即使剩余的电力消耗装置具有限制。 在系统停机期间,燃料电池(10)通过使用剩余燃料气体来对二次电池(41)进行充电而产生电力,并且消耗装置(22,33,13)消耗不可储存的剩余电力, 。 当燃料电池产生的剩余电力被消耗装置消耗时,检测到系统中的任何限制,并且根据检测到的限制来改变燃料电池产生的电力。

    Fuel cell system
    5.
    发明授权
    Fuel cell system 有权
    燃料电池系统

    公开(公告)号:US08034498B2

    公开(公告)日:2011-10-11

    申请号:US11922874

    申请日:2006-06-30

    IPC分类号: H01M8/04

    摘要: A fuel cell system according to the present invention is characterized by comprising a fuel cell, measurement means for measuring impedances of the fuel cell in two kinds or more of frequency regions, and first judgment means for judging two or more parameters concerned with an internal state of the fuel cell based on measurement results of the impedances in the respective frequency regions. According to such a constitution, the impedances in the two or more types of frequency regions (a high frequency region, a low frequency region and the like) are measured to judge two or more parameters such as a wet state of an electrolytic film of the fuel cell and a supply state of a fuel gas, which are concerned with the internal state of the fuel cell based on this measurement result. Since such judgment is performed, as compared with the conventional technology, the internal state of the fuel cell can accurately be grasped, and highly efficient and highly robust control of the fuel cell system can be performed.

    摘要翻译: 根据本发明的燃料电池系统的特征在于包括燃料电池,用于测量两种或更多种频率区域中的燃料电池的阻抗的测量装置,以及用于判断与内部状态有关的两个或更多个参数的第一判断装置 基于各个频率区域中的阻抗的测量结果。 根据这样的结构,测定两种以上的频率区域(高频区域,低频区域等)的阻抗,以判断两个以上的参数,例如电解膜的湿态 燃料电池和燃料气体的供给状态,其基于该测量结果涉及燃料电池的内部状态。 由于进行这样的判断,因此与现有技术相比,能够精确地掌握燃料电池的内部状态,能够高效率地进行燃料电池系统的高度稳定的控制。

    Fuel Cell System
    6.
    发明申请
    Fuel Cell System 有权
    燃料电池系统

    公开(公告)号:US20090110985A1

    公开(公告)日:2009-04-30

    申请号:US11922892

    申请日:2006-06-30

    IPC分类号: H01M8/04

    摘要: A fuel cell system according to the present invention is characterized by comprising a measurement unit which measures an impedance of a fuel cell in a predetermined frequency region, and a regulation unit which regulates an amount of a gas to be supplied to the fuel cell based on a measured value of the impedance in the predetermined frequency region. According to such a constitution, the impedance of the fuel cell in the predetermined frequency region (e.g., a low frequency region) is measured, and the amount of the gas (e.g., an amount of an oxidizing gas) to be supplied to the fuel cell is regulated based on this measured value of the impedance. Here, since the impedance of the fuel cell in the predetermined frequency region largely differs with a fuel supply state (see FIG. 2), the amount of the gas to be supplied to the fuel cell can be regulated based on the measured value of the impedance to realize a highly efficient and stable operation.

    摘要翻译: 根据本发明的燃料电池系统的特征在于包括:测量预定频率区域中的燃料电池的阻抗的测量单元;以及调节单元,其调节要供应到燃料电池的气体的量,基于 在预定频率区域中的阻抗的测量值。 根据这样的结构,测量在预定频率区域(例如低频区域)中的燃料电池的阻抗,并且供给到燃料的气体量(例如,氧化气体的量) 基于阻抗的测量值调节电池。 这里,由于燃料电池在预定频率区域中的阻抗随着燃料供给状态而大幅度变化(参照图2),因此能够基于燃料电池的测量值来调节供给燃料电池的气体量 阻抗实现高效稳定运行。

    Fuel cell system and method of correcting fuel cell current
    7.
    发明申请
    Fuel cell system and method of correcting fuel cell current 审中-公开
    燃料电池系统和燃料电池电流校正方法

    公开(公告)号:US20070077467A1

    公开(公告)日:2007-04-05

    申请号:US10581912

    申请日:2005-01-05

    申请人: Masahiro Shige

    发明人: Masahiro Shige

    IPC分类号: H01M8/04

    摘要: A fuel cell system in accordance with the present invention comprises a fuel cell connected to a load for supplying power thereto; a voltage regulating unit connected between the fuel cell and the load for controlling a voltage between the terminals of the load; a rectifier, which is connected to the fuel cell side from the connection portion with the voltage regulating unit, and which is between the fuel cell and the load, for preventing the reverse flow of a fuel cell current; and a current sensor for detecting a fuel cell current. This fuel cell system detects the output of the current sensor after the voltage between the terminals of the load has been raised by the voltage regulating unit and determines the correction value of the fuel cell current detected with the current sensor based on the detected current sensor output.

    摘要翻译: 根据本发明的燃料电池系统包括连接到用于向其供电的负载的燃料电池; 连接在燃料电池和负载之间的电压调节单元,用于控制负载端子之间的电压; 整流器,其从与电压调节单元的连接部分连接到燃料电池侧,并且位于燃料电池和负载之间,用于防止燃料电池电流的反向流动; 以及用于检测燃料电池电流的电流传感器。 该燃料电池系统在负载端子之间的电压被电压调节单元升高之后检测电流传感器的输出,并且基于检测到的电流传感器输出确定用电流传感器检测到的燃料电池电流的校正值 。

    Fuel cell system and AC impedance measurement method
    8.
    发明授权
    Fuel cell system and AC impedance measurement method 有权
    燃料电池系统和交流阻抗测量方法

    公开(公告)号:US08889309B2

    公开(公告)日:2014-11-18

    申请号:US11922897

    申请日:2006-07-04

    IPC分类号: H01M8/04

    摘要: A fuel cell system capable of measuring AC impedance comprises: power generation stabilizing means for stabilizing power generation in a fuel cell, and impedance measuring means for measuring the AC impedance after power generation in the fuel cell has been stabilized. Since the AC impedance in a low frequency range is measured after power generation in the fuel cell is stabilized, no external disturbance occurs during measurement, and the AC impedance can be measured with a high degree of precision. Thus, a fuel cell system and a measuring method with which AC impedance can be measured with a high degree of precision can be provided.

    摘要翻译: 能够测量AC阻抗的燃料电池系统包括:用于稳定燃料电池中的发电的发电稳定装置,以及用于测量燃料电池发电后的AC阻抗的阻抗测量装置已经稳定。 由于在燃料电池的发电稳定后测量低频范围内的交流阻抗,所以在测量时不会发生外部干扰,可以高精度地测量交流阻抗。 因此,可以提供能够以高精度测量AC阻抗的燃料电池系统和测量方法。

    Fuel cell system
    10.
    发明授权
    Fuel cell system 有权
    燃料电池系统

    公开(公告)号:US07517599B2

    公开(公告)日:2009-04-14

    申请号:US10822837

    申请日:2004-04-13

    IPC分类号: H01M8/04 H01M8/12

    摘要: The measurement precision of a current detector of the fuel cell in a fuel cell system is improved. Where the fuel cell system 20 has not started operation, the vehicle 10 is operating under regenerative operation, the fuel cell 21 is operating under intermittent operation, or operation of the fuel cell system 20 has ended, the output terminal voltage of the fuel cell 21 is set to the OCV value of 400V via the DC/DC converter 31. As a result, even where the status of the fuel cell 21 changes from operating to stopped, the value of the current flowing over the power supply lines 411 can be immediately and reliably set to 0 A. The control unit 60 then obtains the current value Ad from the fuel cell current sensor 413 (step S150), and determines the offset correction value Ac needed in order to cancel the drift amount (i.e., in order to perform zero-point correction).

    摘要翻译: 燃料电池系统中的燃料电池的电流检测器的测量精度提高。 在燃料电池系统20未开始运转的情况下,车辆10进行再生运转,燃料电池21在间歇运转时运转,燃料电池系统20的运转结束,燃料电池21的输出端子电压 通过DC / DC转换器31将OCV值设定为400V。结果,即使燃料电池21的状态从运转状态变化到停止状态,流过电源线411的电流的值也可以立即 并可靠地设定为0A。然后,控制单元60从燃料电池电流传感器413获取当前值Ad(步骤S150),并确定为了抵消漂移量而需要的偏移校正值Ac(即,为了 执行零点校正)。