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1. 发明申请

US20070257642A1 Battery cell monitoring and balancing circuit 审中-公开
标题翻译：电池单元监控和平衡电路
公开(公告)号：US20070257642A1
公开(公告)日：2007-11-08
申请号：US11789530
申请日：2007-04-24
申请人： Sean Xiao , Kevin Sheng , Guoxing Li , Liusheng Liu
发明人： Sean Xiao , Kevin Sheng , Guoxing Li , Liusheng Liu
IPC分类号： H02J7/00
CPC分类号： H02J7/0026
摘要： A monitoring circuit for monitoring a plurality of battery cells of a battery pack includes a plurality of temperature sensors, an analog to digital converter (ADC) and a processor. The plurality of temperature sensors is used for sensing temperatures of the plurality of battery cells and outputting a plurality of analog temperature voltage signals representative of the temperature of the plurality of battery cells. The analog to digital converter (ADC) is adapted to receive the plurality of analog temperature voltage signals and to convert each of the plurality of analog temperature voltage signals to a plurality of individual digital signals. The processor is adapted to generate an alert signal when an individual digital signal is not within a predetermined range.
摘要翻译：用于监测电池组的多个电池单元的监视电路包括多个温度传感器，模数转换器（ADC）和处理器。多个温度传感器用于感测多个电池单元的温度，并且输出表示多个电池单元的温度的多个模拟温度电压信号。模数转换器（ADC）适于接收多个模拟温度电压信号，并将多个模拟温度电压信号中的每一个转换成多个独立的数字信号。当单个数字信号不在预定范围内时，处理器适于产生报警信号。

2. 发明申请

US20070075684A1 Battery charge/discharge control circuit 有权
标题翻译：电池充放电控制电路
公开(公告)号：US20070075684A1
公开(公告)日：2007-04-05
申请号：US11508865
申请日：2006-08-22
申请人： Shiqiang Liu , Sean Xiao , Guoxing Li , Liusheng Liu
发明人： Shiqiang Liu , Sean Xiao , Guoxing Li , Liusheng Liu
IPC分类号： H02J7/00
CPC分类号： H02J7/0068 , H02J7/0031
摘要： A circuit is used for controlling charging and discharging a battery. The circuit comprises a first MOSFET for controlling discharging the battery, and a second MOSFET coupled in series to the battery and the first MOSFET for controlling charging the battery. The first and second MOSFETs have body diodes respectively, and the first body diode of the first MOSFET and the second body diode of the second MOSFET are coupled in opposite directions. A load is coupled to the battery and a common node between the first and second MOSFETs such that power in the battery is delivered to said load when the first MOSFET is turned on. The circuit further comprises a power source coupled to the second switch in series and power is delivered from the power source to the battery when the first and second MOSFETs are turned on.
摘要翻译：电路用于控制电池的充放电。电路包括用于控制对电池放电的第一MOSFET和与电池串联耦合的第二MOSFET和用于控制对电池充电的第一MOSFET。第一和第二MOSFET分别具有体二极管，第一MOSFET的第一体二极管和第二MOSFET的第二体二极管以相反的方向耦合。负载耦合到电池和第一和第二MOSFET之间的公共节点，使得当第一MOSFET导通时，电池中的电力被传送到所述负载。电路还包括串联耦合到第二开关的电源，并且当第一和第二MOSFET导通时，电力从电源传送到电池。

3. 发明授权

US07701177B2 Battery pre-charging circuit comprising normal voltage and low voltage pre-charging circuits 有权
标题翻译：电池预充电电路包括正常电压和低压预充电电路
公开(公告)号：US07701177B2
公开(公告)日：2010-04-20
申请号：US11644314
申请日：2006-12-21
申请人： Shiqiang Liu , Guoxing Li , Sean Xiao , Liusheng Liu
发明人： Shiqiang Liu , Guoxing Li , Sean Xiao , Liusheng Liu
IPC分类号： H02J7/04 , H02J7/16 , H02J7/00
CPC分类号： H02J7/0075 , H01M10/44
摘要： A battery pre-charging circuit includes a pre-charging path, a pre-charging switch and a low-voltage pre-charging circuit. The pre-charging path is coupled between a charger and a battery for providing a pre-charging current from the charger to the battery. The pre-charging switch is coupled to the pre-charging path for conducting along the pre-charging path. The low-voltage pre-charging circuit is coupled to the pre-charging switch for controlling the pre-charging switch. The low-voltage pre-charging circuit is configured to switch on the pre-charging switch when the battery voltage is below a first battery voltage level.
摘要翻译：电池预充电电路包括预充电路径，预充电开关和低压预充电电路。预充电路径耦合在充电器和电池之间，用于提供从充电器到电池的预充电电流。预充电开关耦合到预充电路径以沿预充电路径导通。低压预充电电路耦合到预充电开关，用于控制预充电开关。低电压预充电电路被配置为当电池电压低于第一电池电压电平时接通预充电开关。

4. 发明授权

US07642750B2 Battery charge/discharge control circuit 有权
标题翻译：电池充放电控制电路
公开(公告)号：US07642750B2
公开(公告)日：2010-01-05
申请号：US11508865
申请日：2006-08-22
申请人： Shiqiang Liu , Sean Xiao , Guoxing Li , Liusheng Liu
发明人： Shiqiang Liu , Sean Xiao , Guoxing Li , Liusheng Liu
IPC分类号： H02J7/00 , H02J7/04
CPC分类号： H02J7/0068 , H02J7/0031
摘要： A circuit is used for controlling charging and discharging a battery. The circuit comprises a first MOSFET for controlling discharging the battery, and a second MOSFET coupled in series to the battery and the first MOSFET for controlling charging the battery. The first and second MOSFETs have body diodes respectively, and the first body diode of the first MOSFET and the second body diode of the second MOSFET are coupled in opposite directions. A load is coupled to the battery and a common node between the first and second MOSFETs such that power in the battery is delivered to said load when the first MOSFET is turned on. The circuit further comprises a power source coupled to the second switch in series and power is delivered from the power source to the battery when the first and second MOSFETs are turned on.
摘要翻译：电路用于控制电池的充放电。电路包括用于控制对电池放电的第一MOSFET和与电池串联耦合的第二MOSFET和用于控制对电池充电的第一MOSFET。第一和第二MOSFET分别具有体二极管，第一MOSFET的第一体二极管和第二MOSFET的第二体二极管以相反的方向耦合。负载耦合到电池和第一和第二MOSFET之间的公共节点，使得当第一MOSFET导通时，电池中的电力被传送到所述负载。电路还包括串联耦合到第二开关的电源，并且当第一和第二MOSFET导通时，电力从电源传送到电池。

5. 发明申请

US20080150487A1 Battery pre-charging circuit 有权
标题翻译：电池预充电电路
公开(公告)号：US20080150487A1
公开(公告)日：2008-06-26
申请号：US11644314
申请日：2006-12-21
申请人： Shiqiang Liu , Guoxing Li , Sean Xiao , Liusheng Liu
发明人： Shiqiang Liu , Guoxing Li , Sean Xiao , Liusheng Liu
IPC分类号： H02J7/00
CPC分类号： H02J7/0075 , H01M10/44
摘要： A battery pre-charging circuit. The pre-charging circuit comprises a pre-charging path, a pre-charging switch and a low-voltage pre-charging circuit. The pre-charging path is coupled between a charger and a battery for providing a pre-charging current from the charger to the battery. The pre-charging switch is coupled to the pre-charging path for conducting along the pre-charging path. The low-voltage pre-charging circuit coupled to the pre-charging switch for controlling the pre-charging switch. The low-voltage pre-charging circuit is configured to switch on the pre-charging switch when a battery voltage over the battery is below a first battery voltage level.
摘要翻译：电池预充电电路。预充电电路包括预充电路径，预充电开关和低压预充电电路。预充电路径耦合在充电器和电池之间，用于提供从充电器到电池的预充电电流。预充电开关耦合到预充电路径以沿预充电路径导通。耦合到用于控制预充电开关的预充电开关的低电压预充电电路。当电池电压低于第一电池电压电平时，低电压预充电电路被配置为接通预充电开关。

6. 发明申请

US20070188950A1 Protection device for non-common ground buses 有权
标题翻译：非共用地面总线保护装置
公开(公告)号：US20070188950A1
公开(公告)日：2007-08-16
申请号：US11645985
申请日：2006-12-27
申请人： Liusheng Liu , Guoxing Li , Shiqiang Liu , Sean Xiao
发明人： Liusheng Liu , Guoxing Li , Shiqiang Liu , Sean Xiao
IPC分类号： H02H9/00
CPC分类号： H02H7/18 , H02H9/001 , Y10T307/724 , Y10T307/729 , Y10T307/735
摘要： A protection device for non-common ground buses is disclosed. The protection circuit includes a controller, a level shifter, a first group of switches, and a second group of switches. The controller together with the level shifter controls the first group and second group of switches. The non-common ground buses will be isolated when at least one group of the switches are turned off in an abnormal condition.
摘要翻译：公开了一种用于非公共地面总线的保护装置。保护电路包括控制器，电平转换器，第一组开关和第二组开关。控制器与电平转换器一起控制第一组和第二组开关。当异常情况下至少有一组开关断开时，非公共地面总线将被隔离。

7. 发明授权

US07466104B2 System and method for balancing cells in a battery pack with selective bypass paths 有权
标题翻译：用于平衡具有选择性旁通路径的电池组中的电池的系统和方法
公开(公告)号：US07466104B2
公开(公告)日：2008-12-16
申请号：US11580507
申请日：2006-10-13
申请人： Wei Wang , Guoxing Li , Sean Xiao
发明人： Wei Wang , Guoxing Li , Sean Xiao
IPC分类号： H01M10/46
CPC分类号： H02J7/0016
摘要： A system and method for cell balancing with smart low-voltage control circuit. The cell balancing system comprises a plurality of battery cells, an external bypass path for each cell, an internal bypass path for each cell, an input terminal receiving an enable signal for each cell, an input terminal receiving a selection signal, and a cell balancing unit for generating a configuration signal to conduct the external bypass path or internal bypass path. The enable signal is configured to enable a bypass current of each cell, and the selection signal is configured to select the external bypass path or internal bypass path. The cell balancing unit is employed to receive signals from input terminals, and generate a configuration signal to control the conductance of external bypass paths or internal bypass paths.
摘要翻译：一种智能低压控制电路电池平衡的系统和方法。电池平衡系统包括多个电池单元，每个单元的外部旁路路径，每个单元的内部旁路路径，每个单元接收使能信号的输入端子，接收选择信号的输入端子和单元平衡用于产生配置信号以传导外部旁路路径或内部旁路路径的单元。使能信号被配置为启用每个单元的旁路电流，并且选择信号被配置为选择外部旁路路径或内部旁路路径。采用电池平衡单元从输入端子接收信号，并产生配置信号以控制外部旁路路径或内部旁路路径的电导。

8. 发明授权

US07821229B2 System and method for balancing cells in a battery pack with selected external and internal bypass paths 有权
标题翻译：用于平衡电池组中的电池与选定的外部和内部旁路路径的系统和方法
公开(公告)号：US07821229B2
公开(公告)日：2010-10-26
申请号：US12335325
申请日：2008-12-15
申请人： Wei Wang , Guoxing Li , Sean Xiao
发明人： Wei Wang , Guoxing Li , Sean Xiao
IPC分类号： H01M10/44 , H01M10/46
CPC分类号： H02J7/0016
摘要： A system and method for cell balancing with smart low-voltage control circuit. The cell balancing system comprises a plurality of battery cells, an external bypass path for each cell, an internal bypass path for each cell, an input terminal receiving an enable signal for each cell, an input terminal receiving a selection signal, and a cell balancing unit for generating a configuration signal to conduct the external bypass path or internal bypass path. The enable signal is configured to enable a bypass current of each cell, and the selection signal is configured to select the external bypass path or internal bypass path. The cell balancing unit is employed to receive signals from input terminals, and generate a configuration signal to control the conductance of external bypass paths or internal bypass paths.
摘要翻译：一种智能低压控制电路电池平衡的系统和方法。电池平衡系统包括多个电池单元，每个单元的外部旁路路径，每个单元的内部旁路路径，每个单元接收使能信号的输入端子，接收选择信号的输入端子和单元平衡用于产生配置信号以传导外部旁路路径或内部旁路路径的单元。使能信号被配置为启用每个单元的旁路电流，并且选择信号被配置为选择外部旁路路径或内部旁路路径。采用电池平衡单元从输入端子接收信号，并产生配置信号以控制外部旁路路径或内部旁路路径的电导。

9. 发明授权

US07629771B2 Protection device for non-common ground buses 有权
标题翻译：非共用地面总线保护装置
公开(公告)号：US07629771B2
公开(公告)日：2009-12-08
申请号：US11645985
申请日：2006-12-27
申请人： Guoxing Li , Shiqiang Liu , Sean Xiao
发明人： Guoxing Li , Shiqiang Liu , Sean Xiao
IPC分类号： H02J7/00 , H02J1/00 , H02J3/00 , H02H3/20 , H02H3/24
CPC分类号： H02H7/18 , H02H9/001 , Y10T307/724 , Y10T307/729 , Y10T307/735
摘要： A protection device for non-common ground buses is disclosed. The protection circuit includes a controller, a level shifter, a first group of switches, and a second group of switches. The controller together with the level shifter controls the first group and second group of switches. The non-common ground buses will be isolated when at least one group of the switches are turned off in an abnormal condition.
摘要翻译：公开了一种用于非公共地面总线的保护装置。保护电路包括控制器，电平移位器，第一组开关和第二组开关。控制器与电平转换器一起控制第一组和第二组开关。当异常情况下至少有一组开关断开时，非公共地面总线将被隔离。

10. 发明授权

US07656145B2 Low power bandgap voltage reference circuit having multiple reference voltages with high power supply rejection ratio 有权
标题翻译：低功率带隙电压参考电路具有多个具有高电源抑制比的参考电压
公开(公告)号：US07656145B2
公开(公告)日：2010-02-02
申请号：US11820349
申请日：2007-06-19
申请人： Sean Xiao , Tom Tang , Guoxing Li
发明人： Sean Xiao , Tom Tang , Guoxing Li
IPC分类号： G05F3/16 , G05F1/40
CPC分类号： G05F3/30
摘要： A voltage generator is used for generating a voltage reference with high power supply rejection. One embodiment of the circuit includes a voltage regulator and a bandgap voltage circuit and an amplifier. The voltage regulator including an input node is coupled to an external power supply for generating a regulated voltage source. A bandgap voltage circuit includes a first and a second resistor and a first and a second transistor to generate a voltage difference between the base-to-emitter voltages of the first and the second transistors. The second resistor is coupled to the first resistor and the first transistor for generating the first predetermined voltage in response to the voltage difference. An amplifier circuit is coupled to the first transistor of the bandgap voltage circuit for receiving a first amplifying signal and generating an amplified signal so as to regulate the regulated voltage source.
摘要翻译：电压发生器用于产生具有高电源抑制的电压基准。电路的一个实施例包括电压调节器和带隙电压电路和放大器。包括输入节点的电压调节器耦合到外部电源以产生调节电压源。带隙电压电路包括第一和第二电阻器以及第一和第二晶体管，以产生第一和第二晶体管的基极 - 发射极之间的电压差。第二电阻器耦合到第一电阻器和第一晶体管，用于响应于电压差产生第一预定电压。放大器电路耦合到带隙电压电路的第一晶体管，用于接收第一放大信号并产生放大信号以调节调节电压源。

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