公开(公告)号：US20080197812A1

公开(公告)日：2008-08-21

申请号：US11880898

申请日：2007-07-25

申请人： Stefan Maireanu ,  Chun Lu ,  Jianping Xu ,  Xiaohua Lei ,  Zhitong Lei ,  Yongqiang Yu

发明人： Stefan Maireanu ,  Chun Lu ,  Jianping Xu ,  Xiaohua Lei ,  Zhitong Lei ,  Yongqiang Yu

IPC分类号： H02J7/04

CPC分类号： H02J7/042 ,  H02J7/0068

摘要： In one embodiment, a battery management system includes a charger controller for controlling a charging current of a battery according to a status of a load which is powered by the battery, and a counter coupled to the charger controller for determining a charging time according to such status. Advantageously, a first charging current is selected when the load is off. A second charging current that is less than the first charging current is selected when the load is on. Furthermore, a frequency of the counter is set to a first frequency when the load is off. The frequency is set to a second frequency that is less than the first frequency when the load is on.

摘要翻译： 在一个实施例中，电池管理系统包括充电器控制器，用于根据由电池供电的负载的状态来控制电池的充电电流;以及计数器，其耦合到充电器控制器，用于根据此来确定充电时间 状态。 有利地，当负载关闭时，选择第一充电电流。 当负载打开时，选择小于第一充电电流的第二充电电流。 此外，当负载关闭时，计数器的频率被设置为第一频率。 当负载打开时，频率设置为小于第一个频率的第二个频率。

公开(公告)号：US20080100143A1

公开(公告)日：2008-05-01

申请号：US11906920

申请日：2007-10-04

申请人： Laszlo Lipcsei

发明人： Laszlo Lipcsei

IPC分类号： H02J1/10

CPC分类号： H02J7/0068 ,  Y10T307/696

摘要： A power management system comprises a power conversion stage and a controller. The power conversion stage has two terminals. The first terminal is coupled to a first power source which provides a first voltage. The second terminal is selectively coupled to a second power source which provides a second voltage. The controller coupled to the power conversion stage can select a mode from at least a first mode and a second mode. In the first mode, the power conversion stage receives the first voltage at the first terminal and generates a step-up voltage at the second terminal. The generated step-up voltage is greater than the first voltage. In the second mode, the power conversion stage receives the second voltage at the second terminal and generates a step-down voltage at the first terminal for charging the first power source. The generated step-down voltage is less than the second voltage.

摘要翻译： 电力管理系统包括电力转换级和控制器。 电源转换级有两个端子。 第一端子耦合到提供第一电压的第一电源。 第二端子选择性地耦合到提供第二电压的第二电源。 耦合到功率转换级的控制器可以从至少第一模式和第二模式选择模式。 在第一模式中，功率转换级在第一端接收第一电压，并在第二端产生升压电压。 所产生的升压电压大于第一电压。 在第二模式中，功率转换级在第二端接收第二电压，并在第一端产生降压电压，以对第一电源充电。 所产生的降压电压小于第二电压。

公开(公告)号：US20080067951A1

公开(公告)日：2008-03-20

申请号：US11809046

申请日：2007-05-30

申请人： Houng-Kuo Hsu ,  Chu-Chang Chen ,  Ching-Chuan Kuo

发明人： Houng-Kuo Hsu ,  Chu-Chang Chen ,  Ching-Chuan Kuo

IPC分类号： H05B41/16 ,  G06F3/038 ,  G09G3/36

CPC分类号： H05B41/245 ,  G06F2200/1612

摘要： A multi-lamp backlight system is disclosed. The multi-lamp backlight system includes a plurality of lamps, an inverter circuit and a current balance circuit. The inverter circuit is capable of converting a DC input signal to a pair of AC output signals, which have a 180 degree phase shift. The pair of AC output signals are delivered to the plurality of lamps. The current balance circuit is connected to the low voltage sides of the plurality of lamps for balancing the lamp currents.

摘要翻译： 公开了一种多灯背光系统。 多灯背光系统包括多个灯，逆变器电路和电流平衡电路。 逆变器电路能够将DC输入信号转换成具有180度相移的一对AC输出信号。 一对交流输出信号被传送到多个灯。 电流平衡电路连接到多个灯的低电压侧，用于平衡灯电流。

公开(公告)号：US20070001627A1

公开(公告)日：2007-01-04

申请号：US11516474

申请日：2006-09-05

申请人： Yung-Lin Lin ,  Da Liu

发明人： Yung-Lin Lin ,  Da Liu

IPC分类号： H05B37/00

CPC分类号： H05B41/2813 ,  Y02B20/22

摘要： The present invention provides a protection means for a driving circuit which drives a set of external electrode fluorescent lamps (EEFL). The driving circuit with protection function for driving a set of EEFLs consistent with the present invention includes: a transformer connected to the set of EEFLs; a switching network connected to the transformer which delivers power to the transformer; a sensing circuit connected to the set of EEFLs which detects disconnection if one light source is disconnected; and a controller connected to the switching network which controls the switching network to reduce the total current supplied to the EEFLs which remain connected, if the sensing circuit detects that one EEFL is disconnected. Appropriate protection can therefore be implemented when the EEFL is disconnected on one end or both ends.

摘要翻译： 本发明提供一种用于驱动一组外部电极荧光灯（EEFL）的驱动电路的保护装置。 具有与本发明一致的用于驱动一组EEFL的保护功能的驱动电路包括：连接到该组EEFL的变压器; 连接到向变压器供电的变压器的开关网络; 连接到一组EEFL的感测电路，如果一个光源断开则检测断开; 以及连接到交换网络的控制器，如果感测电路检测到一个EEFL被断开，则控制交换网络以减少提供给保持连接的EEFL的总电流。 因此，当EEFL在一端或两端断开时，可以实现适当的保护。

公开(公告)号：US20060232222A1

公开(公告)日：2006-10-19

申请号：US11105860

申请日：2005-04-14

申请人： Da Liu ,  S.T. Lee ,  C.C. Kuo

发明人： Da Liu ,  S.T. Lee ,  C.C. Kuo

IPC分类号： H05B37/02

CPC分类号： H05B41/2925

摘要： A method according to one embodiment may include supplying ignition power and steady state power to at least one lamp. The method of this embodiment may also include receiving, during an ignition period of said lamp, a feedback signal indicative of power supplied to said lamp; comparing said feedback signal to a signal that is approximately equal to a signal indicative of steady state power; and maintaining a supply of ignition power to said lamp while said feedback signal remains below said signal indicative of said steady state power. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

摘要翻译： 根据一个实施例的方法可以包括向至少一个灯提供点火功率和稳态功率。 该实施例的方法还可以包括在所述灯的点火期间接收指示供应给所述灯的功率的反馈信号; 将所述反馈信号与近似等于指示稳态功率的信号的信号进行比较; 以及当所述反馈信号保持低于指示所述稳态功率的信号时，保持向所述灯供电点火功率。 当然，在不偏离本实施例的情况下，可以进行许多替代，变化和修改。

公开(公告)号：US12081056B2

公开(公告)日：2024-09-03

申请号：US18202221

申请日：2023-05-25

申请人： O2Micro Inc.

发明人： Yingguo Zhang ,  Guoyan Qiao ,  Fu-Jen Hsieh ,  Chia-Ming Chang ,  Chih-Chung Chou ,  Hua-Yi Wang

IPC分类号： H02J7/00

CPC分类号： H02J7/0071 ,  H02J7/0013 ,  H02J7/0036 ,  H02J7/0047

摘要： A controller for managing a battery pack includes: a detection terminal, for transmitting an enable signal when values of battery parameters for the battery pack satisfy a sleep condition, where the enable signal enables the detection circuit to detect whether the battery pack is connected to a load and whether the battery pack is connected to the charger; and a receiving terminal, for receiving a detection result transmitted by the detection circuit. The detection result indicates whether the battery pack is connected to at least one of the load and charger. The controller controls the battery pack to enter a sleep mode of the sleep modes based on the detection result. The controller also includes a control terminal, for transmitting a control signal to control an on/off state of a charging switch and/or a discharging switch. The control signal is generated by the controller based on the detection result.

公开(公告)号：US12055591B2

公开(公告)日：2024-08-06

申请号：US17182087

申请日：2021-02-22

申请人： O2Micro, Inc.

发明人： Chih-Chung Chou ,  Guoxing Li ,  Hua-Yi Wang ,  Fu-Jen Hsieh ,  Lian Chen

IPC分类号： G01R31/3842 ,  G01R31/367 ,  H02J7/00

CPC分类号： G01R31/3842 ,  G01R31/367 ,  H02J7/0048

摘要： In a battery management controller, analog-to-digital conversion circuitry converts analog signals, indicative of a battery voltage, a battery current, and a battery temperature, to digital signals. A memory stores a remaining-capacity lookup table that includes multiple groups of data. Each group of data includes a voltage, a current, a temperature, and a parameter associated with a remaining capacity corresponding to the voltage, the current and the temperature. A processor searches the lookup table for a current parameter value and an end-of-discharge parameter value based on the digital signals, and determines a full available charge capacity of the battery based on the current parameter value and the end-of-discharge parameter value. The processor also counts the number of charges flowing through the battery based on a battery current. The processor further determines an available state of charge of the battery according to the full available charge capacity and the number of charges.

公开(公告)号：US20230009240A1

公开(公告)日：2023-01-12

申请号：US17940931

申请日：2022-09-08

申请人： O2Micro Inc.

发明人： Yan LI ,  Weidong XUE

IPC分类号： H01M10/42 ,  G01R19/165 ,  G01R31/3835 ,  G01R31/396 ,  H02J7/00 ,  H03K5/24

摘要： An open cell detection system includes a battery management system. The battery management system includes a control unit that transmits an open cell detection signal, to enable a balance unit for a first time period and to disable it for a second time period, and to enable an under-voltage comparison unit and an over-voltage comparison unit for a third time period. The under-voltage comparison unit compares a voltage with a first open cell threshold and outputs a first comparison result in the third time period. The over-voltage comparison unit compares a voltage with a second open cell threshold and outputs a second comparison result in the third time period. A judging unit determines whether a connection between a first battery unit and the battery management system is inoperative based on the first and second comparison results.

公开(公告)号：US11489345B2

公开(公告)日：2022-11-01

申请号：US17023118

申请日：2020-09-16

申请人： O2Micro Inc.

发明人： Mingfeng Wang ,  Xinsheng Peng

IPC分类号： H02J7/00

摘要： A controller includes: a transmission terminal, operable for transmitting a clock signal transmitted by an external device, and also operable for receiving electric power supplied by a power source to enable the controller to generate a voltage signal; a processing unit, coupled to the transmission terminal, operable for performing a logical operation on the voltage signal and generating an indication signal based on the clock signal, the indication signal includes a rectangular wave signal having a first level and a second level; and a feedback unit, coupled to the processing unit, operable for providing a configuration signal indicating a type of the charging cable when the indication signal is changed from a second level to a first level. The transmission terminal transmits the configuration signal to the external device, to enable the external device to identify the type of the charging cable based on the configuration signal.

公开(公告)号：US11362522B2

公开(公告)日：2022-06-14

申请号：US16953187

申请日：2020-11-19

申请人： O2Micro Inc.

发明人： Guoxing Li

IPC分类号： H02J7/00 ,  H01M10/48 ,  H01M10/44 ,  H01M10/42

摘要： A battery controller includes a first driving pin, a second driving pin and a third driving pin. The first driving pin is coupled to a charge switch and is operable for turning on the charge switch to enable a battery pack to be charged by a power source. The second driving pin is coupled to a first discharge switch and is operable for turning on the first discharge switch to enable the battery pack to power a first load. The third driving pin is coupled to a second discharge switch and is operable for turning on the second discharge switch to enable the battery pack to power a second load.