公开(公告)号：US09647492B2

公开(公告)日：2017-05-09

申请号：US14246379

申请日：2014-04-07

Applicant: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED ,  LITE-ON TECHNOLOGY CORP.

Inventor： Liang-Chun Lin ,  Yi-Nan Lai ,  Wei-Lieh Lai ,  Ming-Wang Cheng

IPC: H02J7/00 ,  H02J9/06

CPC classification number: H02J9/06 ,  H02J9/061 ,  H02J2009/068 ,  Y10T307/344 ,  Y10T307/625

Abstract: A DC uninterruptible power supply system includes plural uninterruptible power supply devices, each of which includes a power cord, a battery module, a voltage detecting circuit, a current detecting circuit, and a control unit. When the voltage detecting circuit detects that a voltage at the power cord is lower than a first preset value, the control unit controls the battery module to output electrical power to the power cord. When the current detecting circuit detects that current of another uninterruptible power supply device is smaller than a second preset value, the control unit controls a switch to permit current flow to the another uninterruptible power supply device.

公开(公告)号：US09473036B2

公开(公告)日：2016-10-18

申请号：US14611334

申请日：2015-02-02

Applicant: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED ,  LITE-ON TECHNOLOGY CORP.

Inventor： Wei-Lieh Lai ,  Ko-Fu Chou ,  Yi-Pin Lee

IPC: H02M3/337 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M3/3376 ,  H02M3/33592 ,  H02M2001/0058 ,  H02M2001/007 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y02P80/112

Abstract: A direct current voltage conversion device includes a buck converter receiving a direct current input voltage and outputting a direct current first voltage according to a first control signal, a series resonant converter outputting an alternating current second voltage according to a second control signal and a third control signal, a transformer that receives the alternating current second voltage, a rectifier, and an output capacitor electrically coupled with the rectifier. The rectifier generates a direct current output voltage according to a fourth control signal and a fifth control signal, which is outputted across the output capacitor.

Abstract translation: 直流电压转换装置包括：降压转换器，其接收直流输入电压，并根据第一控制信号输出直流第一电压;串联谐振变换器，根据第二控制信号输出交流第二电压;以及第三控制 信号，接收交流二次电压的变压器，整流器和与整流器电耦合的输出电容器。 整流器根据输出电容器输出的第四控制信号和第五控制信号产生直流输出电压。

公开(公告)号：US10205341B2

公开(公告)日：2019-02-12

申请号：US15059532

申请日：2016-03-03

Applicant: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED ,  LITE-ON TECHNOLOGY CORP.

Inventor： Wei-Lieh Lai

IPC: G06F1/00 ,  H02J7/00 ,  H02M7/06 ,  G06F1/28 ,  G06F1/26 ,  H01M10/42 ,  H01M10/46 ,  H02J9/06 ,  G06F1/30

Abstract: A DC backup system is for providing emergency electric power to an electronic device powered by an input power source, and includes a battery backup unit and a battery control unit. The battery backup unit is operable to output state information indicating a state thereof, and test information associated with a self test performed thereon. The battery control unit is electrically connected to the battery backup unit for receiving the state information and the test information therefrom, and is configured to control, according to the state information and the test information, the battery backup unit to output electric power to the electronic device when the input power source fails.

公开(公告)号：US09673722B2

公开(公告)日：2017-06-06

申请号：US14738984

申请日：2015-06-15

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Wing-Keung Eng ,  Po-Jung Tseng ,  Wei-Lieh Lai

IPC: H02M3/335 ,  H02M3/337 ,  H02M1/00

CPC classification number: H02M3/3376 ,  H02M2001/0032 ,  H02M2001/0054 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A quasi-resonant half-bridge converter includes a switch unit including first and second switches that are coupled in series, a capacitor unit coupled to the switch unit in parallel, a rectifier unit, an output capacitor, and a transformer coupled to the aforesaid components. The first and second switches are respectively controlled using first and second control signals that have a constant frequency. Duty cycles of the first and second control signals may be adjusted based upon a DC output voltage across the output capacitor for promoting conversion efficiency of the converter when operating at light load.

公开(公告)号：US09472952B2

公开(公告)日：2016-10-18

申请号：US14252938

申请日：2014-04-15

Applicant: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED ,  LITE-ON TECHNOLOGY CORP.

Inventor： Liang-Chun Lin ,  Te-Yu Chou ,  Ming-Wang Cheng ,  Wei-Lieh Lai

IPC: H02J7/00 ,  H02J1/10 ,  H02J7/34 ,  H02J9/06

CPC classification number: H02J1/10 ,  H02J7/34 ,  H02J9/06

Abstract: A battery module includes a plurality of battery units, each of which supplies electrical power to a load through a respective linear regulator. In a method for managing supply of electrical power by the battery module, a number of battery units that supply electrical power to the load is controlled according to magnitude of a current required by the load, so as to reduce power loss in the linear regulators.

Abstract translation: 电池模块包括多个电池单元，每个电池单元通过相应的线性调节器向负载提供电力。 在用于管理由电池模块供电的方法中，根据负载所要求的电流的大小来控制向负载提供电力的多个电池单元，以便减少线性调节器中的功率损耗。

公开(公告)号：US09281751B2

公开(公告)日：2016-03-08

申请号：US14039137

申请日：2013-09-27

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Chien-Yu Lin ,  Wei-Lieh Lai ,  Ya-Jhe Liu ,  Yu-Kang Lo ,  Huang-Jen Chiu ,  Cheng-Ting Lin

IPC: H02M3/335

CPC classification number: H02M3/33523

Abstract: A voltage control method for a power converter includes: acquiring a current of a first primary side winding of a transformer circuit of the power converter; integrating the acquired current to obtain an average voltage; comparing the average voltage with a reflected voltage associated with a current of a secondary side winding of the transformer circuit; and adjusting a duty cycle of a switch of the power converter based on an obtained comparison result for adjustment of an output voltage of the power converter.

Abstract translation: 一种电力转换器的电压控制方法，包括：获取电力变换器的变压器电路的第一一次侧绕组的电流; 积分所获得的电流以获得平均电压; 将平均电压与与变压器电路的次级侧绕组的电流相关联的反射电压进行比较; 以及基于获得的用于调节功率转换器的输出电压的比较结果来调整功率转换器的开关的占空比。