Fuel cell system
    2.
    发明授权
    Fuel cell system 有权
    燃料电池系统

    公开(公告)号:US09225028B2

    公开(公告)日:2015-12-29

    申请号:US12810127

    申请日:2008-12-18

    IPC分类号: H01M8/04 H01M8/10

    摘要: A fuel cell system capable of carrying out a proper current limiting even when decreasing a cell voltage through, e.g., a rapid warm-up is provided. When a rapid warm-up is started, an acceptable cell-voltage value setting part sets a acceptable lowest-cell-voltage value in accordance with the operation state of a fuel cell. Meanwhile, a target cell-voltage value setting part sets an initial value for a target lowest-cell-voltage value. The target cell-voltage value setting part then compares a lowest cell voltage detected by a cell monitor with the set target lowest-cell-voltage value, and judges whether or not the lowest cell voltage is near the target lowest-cell-voltage value continuously for a given time period. If the result of the judgment is positive, the target cell-voltage value setting part updates the target lowest-cell-voltage value with a value obtained by decreasing the target lowest-cell-voltage value only by an update width.

    摘要翻译: 提供了即使在通过例如快速预热来降低电池电压时也能够执行适当的电流限制的燃料电池系统。 当快速预热开始时,可​​接受的电池电压值设定部分根据燃料电池的运行状态设定可接受的最低电池电压值。 同时,目标电池电压值设定部设定目标最低电池电压值的初始值。 目标单元电压值设定部分将由单元监视器检测的最低单元电压与设定的目标最小单元电压值进行比较,并且连续地判断最低单元电压是否接近目标最小单元电压值 在给定的时间段内 如果判断结果是肯定的,则目标单元电压值设定部分用目标最小单元电压值减去更新宽度获得的值来更新目标最小单元电压值。

    Fuel cell system including soft switching boost converter
    3.
    发明授权
    Fuel cell system including soft switching boost converter 有权
    燃料电池系统包括软开关升压转换器

    公开(公告)号:US09029030B2

    公开(公告)日:2015-05-12

    申请号:US13516163

    申请日:2010-12-16

    摘要: A voltage boost converter includes: a main voltage boost portion that has a first switch and a first coil, and that raises output voltage of a direct-current power source by using counter electromotive force of the coil caused by the switch performing a switching action on the coil; and a subsidiary voltage boost portion which has a capacitor that adjusts potential difference between two poles of the switch by amount of electricity stored, and which reduces switching loss of the switch by adjusting the amount of electricity in the capacitor during the switching action, and which has a second switch and a second coil. The second coil is formed by winding a wire around at least a portion of a core formed of a magnetic body. The core is provided with a gap formed of a non-magnetic body. A core region formed of a magnetic body is adjacent to the gap.

    摘要翻译: 升压转换器包括:主升压部分,其具有第一开关和第一线圈,并且通过使用由开关执行开关动作的开关的线圈的反电动势来提高直流电源的输出电压 线圈 以及辅助升压部,其具有通过存储的电量来调节开关的两极之间的电位差的电容器,并且通过在开关动作期间调节电容器的电量来减小开关的开关损耗,并且哪个 具有第二开关和第二线圈。 第二线圈通过围绕由磁体形成的芯的至少一部分缠绕而形成。 芯部设置有由非磁性体形成的间隙。 由磁性体形成的芯部区域与间隙相邻。

    DC-DC converter with an auxiliary circuit for performing soft-switching
    4.
    发明授权
    DC-DC converter with an auxiliary circuit for performing soft-switching 有权
    DC-DC转换器,具有用于执行软切换的辅助电路

    公开(公告)号:US08970186B2

    公开(公告)日:2015-03-03

    申请号:US13635835

    申请日:2011-06-01

    摘要: A voltage conversion circuit apparatus that adjusts a timing skew between the switching control of the first switching element and the switching control of the second switching element includes: a skew storage portion that stores a timing skew between the switching controls of the first and second switching elements after the voltage conversion circuit apparatus is manufactured; and a timing adjustment portion that corrects the stored timing skew and thereby adjusts the timing relation between a first pulse signal and a second pulse signal so as to bring within a permissible range the timing skew that occurs when the switching controls of the first and second switching elements are performed by using the first pulse signal and the second pulse signal.

    摘要翻译: 调整第一开关元件的开关控制与第二开关元件的切换控制之间的定时偏差的电压变换电路装置包括:歪斜存储部,其存储第一开关元件和第二开关元件的开关控制之间的定时偏差 在电压转换电路装置制造之后; 以及定时调整部,其校正存储的定时偏差,从而调整第一脉冲信号和第二脉冲信号之间的定时关系,以便在允许范围内使得当第一和第二切换的切换控制时发生的定时偏移 通过使用第一脉冲信号和第二脉冲信号来执行元件。

    Fuel cell system, electrode catalyst degradation judgment method, and moving body
    5.
    发明授权
    Fuel cell system, electrode catalyst degradation judgment method, and moving body 有权
    燃料电池系统,电极催化剂劣化判断方法和移动体

    公开(公告)号:US08900768B2

    公开(公告)日:2014-12-02

    申请号:US12529102

    申请日:2008-02-29

    IPC分类号: H01M8/04

    摘要: Output voltage of a fuel cell 2 is decreased by a converter 51 to conduct an activation treatment to catalyst of the fuel cell 2, while measuring reduction current by a current sensor 2a while scanning output voltage of the fuel cell 2 over a certain range by the converter 51 as measurement of cyclic voltammetry under the condition that supply of oxidation gas to the fuel cell 2 is stopped from a compressor 31, and this measurement value is integrated by a control device 6. The control device 6 finds a charge amount of electrode catalyst of the fuel cell 2 based on this integration value, decides whether this charge amount is smaller or not than a degradation decision value, and displays this decision result on a display 55. A decision can be made precisely as to whether the electrode catalyst of the fuel cell is degraded or not.

    摘要翻译: 通过转换器51降低燃料电池2的输出电压,在通过电流传感器2a测量还原电流的同时,在一定范围内扫描燃料电池2的输出电压,同时对燃料电池2的催化剂进行激活处理 转换器51作为循环伏安法的测量,在向压缩机31停止向燃料电池2供给氧化气体的条件下,通过控制装置6对该测量值进行积分。控制装置6找到电极催化剂的电荷量 基于该积分值,判定该电荷量是否小于劣化判定值,并将判定结果显示在显示器55上。可以精确地判定电池催化剂是否为 燃料电池劣化或不劣化。

    Vehicle-mounted multi-phase converter and design method thereof
    6.
    发明授权
    Vehicle-mounted multi-phase converter and design method thereof 失效
    车载多相转换器及其设计方法

    公开(公告)号:US08610414B2

    公开(公告)日:2013-12-17

    申请号:US13125247

    申请日:2009-10-21

    IPC分类号: G05F1/40

    CPC分类号: H02M3/1584

    摘要: An object is to miniaturize booster coils used in a vehicle-mounted booster converter. In the design method for a vehicle-mounted multi-phase converter including multiple booster coils and a switching circuit for generating an induced electromotive force at each booster coil by switching of current flowing to each booster coil for applying an output voltage, based on an input voltage and the induced electromotive force generated at each booster coil, to a vehicle drive circuit, a coupling factor indicating the extent by which the induced electromotive force in one of multiple booster coils contributes to the voltage between terminals of another booster coil is determined on the basis of a relationship between the coupling factor and current ripple component of each booster coil.

    摘要翻译: 目的在于使用在车载升压转换器中的升压线圈小型化。 在包括多个升压线圈的车载多相转换器的设计方法中,以及用于通过切换流过每个升压线圈以提供输出电压的电流来产生每个升压线圈处的感应电动势的开关电路, 电压和在每个升压线圈处产生的感应电动势到车辆驱动电路,耦合因子表示多个升压线圈中的一个中的感应电动势对另一个升压线圈的端子之间的电压有贡献的程度, 每个增压线圈的耦合因子和电流纹波分量之间的关系的基础。

    Fuel cell system
    7.
    发明授权
    Fuel cell system 有权
    燃料电池系统

    公开(公告)号:US08451006B2

    公开(公告)日:2013-05-28

    申请号:US12597245

    申请日:2008-05-27

    IPC分类号: G01N27/416 H01M10/44

    摘要: A fuel cell system is configured to have: a voltage superimposing unit that superimposes a predetermined AC signal on an output voltage of a fuel cell; a unit that detects an output voltage value of a battery device, the output voltage value varying as the fuel cell output voltage value on which the AC signal has been superimposed varies; a battery device voltage comparison unit that compares the detected battery device output voltage value with a predetermined threshold voltage; and a measurement permission determination unit that determines whether the AC impedance measurement is permitted or not based on whether or not the battery device output voltage value exceeds the threshold voltage. The fuel cell system can protect the battery device in the impedance measurement of the fuel cell based on an AC impedance method.

    摘要翻译: 燃料电池系统被配置为具有:将预定AC信号叠加在燃料电池的输出电压上的电压叠加单元; 检测电池装置的输出电压值的单元,随着叠加了交流信号的燃料电池输出电压值而变化的输出电压值变化; 电池装置电压比较部,将检测出的电池装置输出电压值与规定的阈值电压进行比较; 以及测量许可确定单元,其基于电池装置输出电压值是否超过阈值电压来判定是否允许了AC阻抗测量。 燃料电池系统可以基于交流阻抗法在燃料电池的阻抗测量中保护电池装置。

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

    公开(公告)号:US08288050B2

    公开(公告)日:2012-10-16

    申请号:US12083611

    申请日:2006-11-20

    IPC分类号: H01M8/00 H01M8/04

    摘要: There is disclosed a fuel cell system in which a poisoned electrode catalyst can be recovered while meeting a demand for an output power. When a controller detects that an electrode catalyst is poisoned, the controller derives a target operation point adequate for recovering a function of the poisoned electrode catalyst to realize shift of an operation point so that the output power is kept constant. Specifically, a fuel cell voltage is controlled using a DC/DC converter, and an amount of an oxidizing gas to be fed from an oxidizing gas supply source is adjusted, thereby controlling a fuel cell current.

    摘要翻译: 公开了一种燃料电池系统,其中可以在满足对输出功率的需求的情况下回收中毒的电极催化剂。 当控制器检测到电极催化剂中毒时,控制器产生足以恢复中毒电极催化剂功能的目标操作点,以实现操作点的移动,使得输出功率保持恒定。 具体地,使用DC / DC转换器控制燃料电池电压,并且调节从氧化剂气体供给源供给的氧化气体的量,从而控制燃料电池电流。