公开(公告)号：US20110140673A1

公开(公告)日：2011-06-16

申请号：US12653212

申请日：2009-12-10

申请人： Weibiao Zhang ,  Mark A. Hamlett ,  J. Randall Cooper

发明人： Weibiao Zhang ,  Mark A. Hamlett ,  J. Randall Cooper

IPC分类号： H02J7/00

CPC分类号： H02J7/0029 ,  H02J7/041 ,  H02J2007/0037 ,  H02J2007/004

摘要： A battery management system for charging a battery by a charger includes a transistor and either a charge pump or a push-pull output driver. The transistor increases and decreases an electrical connection between the battery and a voltage from the charger and transmits a charge current from the charger to the battery by turning on and off in response to a pulse width modulated drive signal generated by the charge pump or the push-pull output driver. The charge pump or the push-pull output driver increases the drive signal when the voltage from the charger is above a pre-charge threshold voltage and decreases the drive signal when the voltage from the charger is below the pre-charge threshold voltage.

摘要翻译： 用于通过充电器对电池充电的电池管理系统包括晶体管以及电荷泵或推挽输出驱动器。 晶体管增加和减少电池与来自充电器的电压之间的电连接，并且响应于由电荷泵产生的脉冲宽度调制的驱动信号或推动电压而将充电电流从充电器传输到电池 -pull输出驱动程序。 当充电器的电压高于预充电阈值电压时，充电泵或推挽输出驱动器增加驱动信号，并且当来自充电器的电压低于预充电阈值电压时，驱动信号减小。

公开(公告)号：US08547064B2

公开(公告)日：2013-10-01

申请号：US12687173

申请日：2010-01-14

申请人： J. Randall Cooper ,  Weibiao Zhang ,  Kyl W. Scott

发明人： J. Randall Cooper ,  Weibiao Zhang ,  Kyl W. Scott

IPC分类号： H02J7/00 ,  G01R31/36

CPC分类号： H02J7/0021 ,  G01R31/3658

摘要： A battery cell tab monitoring apparatus includes a conductive element electrically connected between two battery cells. The conductive element is connected to a sensing circuit including a pull-down current source connected to pull current from the conductive element and/or a pull-up current source connected to drive current into the conductive element. A voltage measuring circuit is connected to sense voltages during operation of the pull-down current source and the pull-up current source to be used to determine the status of the conductive element. For instance, voltages beyond certain fixed or variable thresholds indicate that the conductive element is flexing or cracking, which can be a precursor to its breaking. Voltages beyond other fixed or variable thresholds indicate that the conductive element is fully disconnected. The current sources used to push and pull the sensing currents may be used to bring the battery cells into balance when an imbalance is detected.

摘要翻译： 电池单元片监视装置包括电连接在两个电池单元之间的导电元件。 导电元件连接到感测电路，该感测电路包括连接到从导电元件拉出电流的下拉电流源和/或连接到驱动电流到导电元件中的上拉电流源。 电压测量电路连接到用于确定导电元件的状态的下拉电流源和上拉电流源的操作期间的感测电压。 例如，超过某些固定或可变阈值的电压表示导电元件是弯曲或开裂的，这可能是其破坏的前兆。 超出其他固定或可变阈值的电压表示导电元件完全断开。 当检测到不平衡时，用于推和拉感测电流的电流源可用于使电池单元平衡。

公开(公告)号：US08541981B2

公开(公告)日：2013-09-24

申请号：US12943326

申请日：2010-11-10

申请人： Weibiao Zhang ,  J. Randall Cooper

发明人： Weibiao Zhang ,  J. Randall Cooper

IPC分类号： H02J7/00

CPC分类号： H02J7/0021 ,  H02J7/0026

摘要： A control circuit of a battery power-path management circuit establishes a first power path between a battery input node and an output node when the input node voltage is larger than a charger input node voltage and a second power path between the charger input node and the output node when the voltage on the charger input node is larger than the battery input node voltage. It controls the second power path to provide power to the output node, enabling battery charging and protection over a battery voltage range from about zero volts. It has low power consumption and can support wide-swing power supply voltage from as low as one volt to as high as maximum allowed Vds of drain-extended devices. It can use smaller device sizes because the PMOS switch gate voltage is 0V when the power supply is not too high.

摘要翻译： 电池电源路径管理电路的控制电路在输入节点电压大于充电器输入节点电压和充电器输入节点与充电器输入节点之间的第二电源路径时，建立电池输入节点与输出节点之间的第一电力路径 输出节点，当充电器输入节点上的电压大于电池输入节点电压时。 它控制第二个电源通路，为输出节点提供电源，从而能够在电压从零伏左右的电压范围内进行充电和保护。 它具有低功耗，并且可以支持从低至一伏的宽摆幅电源电压到最大允许的漏极扩展器件的Vds。 它可以使用较小的器件尺寸，因为当电源不太高时，PMOS开关栅极电压为0V。

公开(公告)号：US20120112686A1

公开(公告)日：2012-05-10

申请号：US12943326

申请日：2010-11-10

申请人： Weibiao Zhang ,  J. Randall Cooper

发明人： Weibiao Zhang ,  J. Randall Cooper

IPC分类号： H02J7/00

CPC分类号： H02J7/0021 ,  H02J7/0026

摘要： A control circuit of a battery power-path management circuit establishes a first power path between a battery input node and an output node when the input node voltage is larger than a charger input node voltage and a second power path between the charger input node and the output node when the voltage on the charger input node is larger than the battery input node voltage. It controls the second power path to provide power to the output node, enabling battery charging and protection over a battery voltage range from about zero volts. It has low power consumption and can support wide-swing power supply voltage from as low as one volt to as high as maximum allowed Vds of drain-extended devices. It can use smaller device sizes because the PMOS switch gate voltage is 0V when the power supply is not too high.

摘要翻译： 电池电源路径管理电路的控制电路在输入节点电压大于充电器输入节点电压和充电器输入节点与充电器输入节点之间的第二电源路径时，建立电池输入节点与输出节点之间的第一电力路径 输出节点，当充电器输入节点上的电压大于电池输入节点电压时。 它控制第二个电源通路，为输出节点提供电源，从而能够在电压从零伏左右的电压范围内进行充电和保护。 它具有低功耗，并且可以支持从低至一伏的宽摆幅电源电压到最大允许的漏极扩展器件的Vds。 它可以使用较小的器件尺寸，因为当电源不太高时，PMOS开关栅极电压为0V。