公开(公告)号：US08642220B2

公开(公告)日：2014-02-04

申请号：US12567381

申请日：2009-09-25

申请人： Yanyan Zhang ,  Sriram Ganapathy ,  Loren Devries ,  Bruce J. Clingerman

发明人： Yanyan Zhang ,  Sriram Ganapathy ,  Loren Devries ,  Bruce J. Clingerman

IPC分类号： H01M8/04

CPC分类号： H01M8/0432 ,  H01M8/04492 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04992 ,  H01M2008/1095

摘要： A system and method for determining the maximum allowed stack current limit rate for a fuel cell stack that considers cell voltage. The method includes estimating a fuel cell stack voltage based on a fuel cell resistance value, stack variables and a current request signal. The fuel cell resistance value can be modeled based on stack temperature and stack relative humidity. The stack variables can include exchange current density and mass transfer coefficient. The method then uses the estimated fuel cell voltage and a look-up table based on estimated voltage to determine a current rate limit value for changing the current of the stack. The method then adds the current rate limit value and the current request signal to obtain the current set-point.

摘要翻译： 一种用于确定考虑电池电压的燃料电池堆的允许的最大电流限流速率的系统和方法。 该方法包括基于燃料电池电阻值，堆叠变量和当前请求信号来估计燃料电池堆电压。 燃料电池电阻值可以基于堆温度和堆叠相对湿度建模。 堆叠变量可以包括交换电流密度和传质系数。 该方法然后使用估计的燃料电池电压和基于估计电压的查找表来确定用于改变电池堆的电流的当前速率限制值。 然后，该方法添加当前速率限制值和当前请求信号以获得当前设定点。

公开(公告)号：US20110076582A1

公开(公告)日：2011-03-31

申请号：US12567381

申请日：2009-09-25

申请人： Yanyan Zhang ,  Sriram Ganapathy ,  Loren Devries ,  Bruce J. Clingerman

发明人： Yanyan Zhang ,  Sriram Ganapathy ,  Loren Devries ,  Bruce J. Clingerman

IPC分类号： H01M8/00 ,  H01M8/04 ,  G06F19/00

CPC分类号： H01M8/0432 ,  H01M8/04492 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04992 ,  H01M2008/1095

摘要： A system and method for determining the maximum allowed stack current limit rate for a fuel cell stack that considers cell voltage. The method includes estimating a fuel cell stack voltage based on a fuel cell resistance value, stack variables and a current request signal. The fuel cell resistance value can be modeled based on stack temperature and stack relative humidity. The stack variables can include exchange current density and mass transfer coefficient. The method then uses the estimated fuel cell voltage and a look-up table based on estimated voltage to determine a current rate limit value for changing the current of the stack. The method then adds the current rate limit value and the current request signal to obtain the current set-point.

摘要翻译： 一种用于确定考虑电池电压的燃料电池堆的允许的最大电流限流速率的系统和方法。 该方法包括基于燃料电池电阻值，堆叠变量和当前请求信号来估计燃料电池堆电压。 燃料电池电阻值可以基于堆温度和堆叠相对湿度建模。 堆叠变量可以包括交换电流密度和传质系数。 该方法然后使用估计的燃料电池电压和基于估计电压的查找表来确定用于改变电池堆的电流的当前速率限制值。 然后，该方法添加当前速率限制值和当前请求信号以获得当前设定点。

公开(公告)号：US20120019254A1

公开(公告)日：2012-01-26

申请号：US12840014

申请日：2010-07-20

申请人： Yanyan Zhang ,  Sriram Ganapathy ,  Kiran Mallavarapu

发明人： Yanyan Zhang ,  Sriram Ganapathy ,  Kiran Mallavarapu

IPC分类号： G01N27/416

CPC分类号： H01M8/04552 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04992 ,  H01M2008/1095

摘要： A system for estimating parameters of a fuel cell stack. The system includes a stack health monitor for monitoring minimum cell voltage, stack voltage and current density of the fuel cell stack. The stack health monitor also indicates when a predetermined minimum cell voltage threshold level has been achieved. The system further includes a controller configured to control the fuel cell stack, where the controller determines and records the average fuel cell voltage. The controller generates and stores artificial data points proximate to the one or more predetermined minimum cell voltage threshold levels each time the minimum cell voltage drops below the one or more predetermined minimum cell voltage threshold levels so as to provide an estimation of the fuel cell stack parameters including a minimum cell voltage trend and a minimum cell voltage polarization curve.

摘要翻译： 一种用于估计燃料电池堆的参数的系统。 该系统包括用于监测燃料电池堆的最小电池电压，堆叠电压和电流密度的堆叠健康监测器。 堆栈运行状况监视器还指示何时已经实现了预定的最小单元电压阈值电平。 该系统还包括控制器，其被配置为控制燃料电池堆，其中控制器确定并记录燃料电池的平均电压。 每当最小单元电压下降到低于一个或多个预定最小单元电压阈值电平时，控制器产生并存储靠近一个或多个预定最小单元电压阈值电平的人造数据点，以便提供燃料电池堆参数的估计 包括最小电池电压趋势和最小电池电压极化曲线。

公开(公告)号：US08405399B2

公开(公告)日：2013-03-26

申请号：US12840014

申请日：2010-07-20

申请人： Yanyan Zhang ,  Sriram Ganapathy ,  Kiran Mallavarapu

发明人： Yanyan Zhang ,  Sriram Ganapathy ,  Kiran Mallavarapu

IPC分类号： G01N27/416

CPC分类号： H01M8/04552 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04992 ,  H01M2008/1095

摘要： A system for estimating parameters of a fuel cell stack. The system includes a stack health monitor for monitoring minimum cell voltage, stack voltage and current density of the fuel cell stack. The stack health monitor also indicates when a predetermined minimum cell voltage threshold level has been achieved. The system further includes a controller configured to control the fuel cell stack, where the controller determines and records the average fuel cell voltage. The controller generates and stores artificial data points proximate to the one or more predetermined minimum cell voltage threshold levels each time the minimum cell voltage drops below the one or more predetermined minimum cell voltage threshold levels so as to provide an estimation of the fuel cell stack parameters including a minimum cell voltage trend and a minimum cell voltage polarization curve.

摘要翻译： 一种用于估计燃料电池堆的参数的系统。 该系统包括用于监测燃料电池堆的最小电池电压，堆叠电压和电流密度的堆叠健康监测器。 堆栈运行状况监视器还指示何时已经实现了预定的最小单元电压阈值电平。 该系统还包括控制器，其被配置为控制燃料电池堆，其中控制器确定并记录燃料电池的平均电压。 每当最小单元电压下降到低于一个或多个预定最小单元电压阈值电平时，控制器产生并存储靠近一个或多个预定最小单元电压阈值电平的人造数据点，以便提供燃料电池堆参数的估计 包括最小电池电压趋势和最小电池电压极化曲线。

公开(公告)号：US07185625B1

公开(公告)日：2007-03-06

申请号：US11211647

申请日：2005-08-26

申请人： Shilai Guan ,  Yanyan Zhang

发明人： Shilai Guan ,  Yanyan Zhang

IPC分类号： F02B53/00 ,  F02B53/04 ,  F01C1/00 ,  F04C18/00 ,  F04C2/00

CPC分类号： F01C1/20

摘要： The rotary piston power system includes a housing having a drum and a cover rotatably mounted on the drum. The drum has high pressure and low pressure ports defined in its peripheral wall and a central separator wall having arcuate end faces and a pair of semicylindrical recesses defined in opposing sidewalls. A pair of pistons are rotatably mounted on axles on opposite sides of the separator wall and fit closely between the separator wall and the peripheral wall. Each piston has a plurality of radially disposed cylindrical recesses defining slots in the piston's peripheral wall. The cover has a plurality of radially disposed vanes extending into the drum defining a number of cylinders or chambers double the number of recesses defined in a single piston. An input/output shaft extends from the opposite side of the cover for coupling to a prime mover or to a load.

摘要翻译： 旋转活塞动力系统包括具有滚筒和可旋转地安装在滚筒上的盖的壳体。 鼓具有限定在其周壁中的高压和低压端口以及具有弓形端面的中心隔板壁和限定在相对侧壁中的一对半圆柱形凹槽。 一对活塞可旋转地安装在分离器壁的相对侧上的轴上并且紧密地配合在分隔壁和周壁之间。 每个活塞具有多个径向设置的圆柱形凹部，其限定活塞周边壁中的槽。 盖具有多个径向设置的叶片，其延伸到滚筒中，限定多个圆柱体或多个腔室，将单个活塞中限定的凹槽数量加倍。 输入/输出轴从盖的相对侧延伸，用于联接到原动机或负载。

公开(公告)号：US20140284092A1

公开(公告)日：2014-09-25

申请号：US14178303

申请日：2014-02-12

申请人： Jing Bai ,  Yin Guo ,  Shayan Zhang ,  Yanyan Zhang

发明人： Jing Bai ,  Yin Guo ,  Shayan Zhang ,  Yanyan Zhang

IPC分类号： H05K1/02 ,  H05K1/11

CPC分类号： H05K1/112 ,  H05K1/0268 ,  H05K3/225 ,  H05K3/3421 ,  H05K2201/09663 ,  H05K2203/176

摘要： An electronic device such as a circuit board has a contact pad for connection to a contact of a component, and a pad portion interconnection. The contact pad has physically separate pad portions. The pad portion interconnection electrically connects the pad portions of the contact pad, independently of any mounted connection on the pad portions. Providing multiple pad portions for a single contact pad allows the contact pad to function even if one of the pad portions is damaged such as by peeling off. An example application is an EMC (Electromagnetic Compatibility) and/or ESD (Electro-Static Discharge) test circuit board.

摘要翻译： 诸如电路板的电子装置具有用于连接到部件的触点和焊盘部分互连的接触焊盘。 接触垫具有物理上分离的垫部分。 焊盘部分互连电连接接触焊盘的焊盘部分，独立于焊盘部分上的任何安装的连接。 为单个接触垫提供多个焊盘部分允许接触焊盘即使其中一个焊盘部分被损坏（例如通过剥离）也起作用。 示例应用是EMC（电磁兼容性）和/或ESD（静电放电）测试电路板。

公开(公告)号：US20070044751A1

公开(公告)日：2007-03-01

申请号：US11211647

申请日：2005-08-26

申请人： Shilai Guan ,  Yanyan Zhang

发明人： Shilai Guan ,  Yanyan Zhang

IPC分类号： F02B53/00

CPC分类号： F01C1/20

摘要： The rotary piston power system includes a housing having a drum and a cover rotatably mounted on the drum. The drum has high pressure and low pressure ports defined in its peripheral wall and a central separator wall having arcuate end faces and a pair of semicylindrical recesses defined in opposing sidewalls. A pair of pistons are rotatably mounted on axles on opposite sides of the separator wall and fit closely between the separator wall and the peripheral wall. Each piston has a plurality of radially disposed cylindrical recesses defining slots in the piston's peripheral wall. The cover has a plurality of radially disposed vanes extending into the drum defining a number of cylinders or chambers double the number of recesses defined in a single piston. An input/output shaft extends from the opposite side of the cover for coupling to a prime mover or to a load.

摘要翻译： 旋转活塞动力系统包括具有滚筒和可旋转地安装在滚筒上的盖的壳体。 鼓具有限定在其周壁中的高压和低压端口以及具有弓形端面的中心隔板壁和限定在相对侧壁中的一对半圆柱形凹槽。 一对活塞可旋转地安装在分离器壁的相对侧上的轴上并且紧密地配合在分隔壁和周壁之间。 每个活塞具有多个径向设置的圆柱形凹部，其限定活塞周边壁中的槽。 盖具有多个径向设置的叶片，其延伸到滚筒中，限定多个圆柱体或多个腔室，将单个活塞中限定的凹槽数量加倍。 输入/输出轴从盖的相对侧延伸，用于联接到原动机或负载。