1
Liusheng Liu, Guoxing Li: Battery cell monitoring and balancing circuit. O2Micro International, Grossman Tucker Perreault & Pfleger PLLC, July 25, 2006: US07081737 (40 worldwide citation)

A monitoring circuit for accurately monitoring a voltage level from each of a plurality of battery cells of a battery pack includes an analog to digital converter (ADC) and a processor. The ADC is configured to accept an analog voltage signal from each of the plurality of battery cells and convert e ...


2
Liusheng Liu, Guoxing Li: High precision analog to digital converter. 02Micro International, Grossman Tucker Perreault & Pfleger PLLC, June 1, 2004: US06744394 (24 worldwide citation)

An analog to digital converter (ADC) includes a cross switch array coupled between an input switch array and an integrator configured to alternately transfer charges from a first input capacitor and a second input capacitor to a first integration capacitor and a second integration capacitor thereby ...


3
Wei Wang, Guoxing Li, Sean Xiao: System and method for balancing cells in a battery pack with selective bypass paths. O2 Micro International, December 16, 2008: US07466104 (23 worldwide citation)

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 ...


4
Jiwei Chen, Guoxing Li: Low dropout voltage regulator. O2 Micro, February 6, 2007: US07173402 (20 worldwide citation)

A low dropout voltage regulator (LDO) includes a regulating circuit, an amplifier, and a first compensating path. The regulating circuit is configured to receive an input signal at an input terminal and provide an output signal at an output terminal in response to a control signal received at the co ...


5
Guoxing Li, Xiaohu Tang: Conversion systems with balanced cell currents. O2Micro, June 21, 2011: US07965061 (14 worldwide citation)

A conversion system includes a conversion circuit coupled to multiple cells for generating multiple sampling signals indicative of the cell voltages of the cells respectively. Each sampling signal is with respect to the same reference level. In addition, the conversion system includes a compensation ...


6
Liusheng Liu, Guoxing Li: Battery cell monitoring and balancing circuit. O2Micro International, Grossman Tucker Perreault & Pfleger PLLC, April 13, 2010: US07696725 (12 worldwide citation)

A monitoring circuit for accurately monitoring a voltage level from each of a plurality of battery cells of a battery pack includes an analog to digital converter (ADC) and a processor. The ADC is configured to accept an analog voltage signal from each of the plurality of battery cells and convert e ...


7
Guoxing Li: Battery management system. O2Micro International, September 20, 2011: US08022669 (12 worldwide citation)

A battery management system can include a battery having a plurality of cells, a plurality of devices coupled to the battery, and a control unit coupled to a first device of the devices. The devices can assess the statuses of the cells. The control unit can communicate with a destination device of t ...


8
Guoxing Li, Wei Wang: Apparatus and method for detecting battery pack voltage. O2Micro International, Li K Wang, Wang Law Firm, April 1, 2008: US07352155 (11 worldwide citation)

An apparatus and method for detecting battery pack voltage is disclosed. The voltage detection apparatus includes a plurality of selectors for providing a cell voltage of a predetermined cell, a detector buffer for receiving the cell voltage of the predetermined cell and supplying an intermediate vo ...


9
Guoxing Li, Wei Zhang, Songtao Chen, Chutao Zhang: Systems and methods for cell balancing. O2Micro, December 25, 2012: US08339100 (9 worldwide citation)

A method for balancing multiple battery cells which are grouped into multiple battery modules includes: obtaining cell parameters of the battery cells, respectively; calculating an average cell parameter for each of the battery modules according to the cell parameters; identifying a donator module a ...


10
Han Jung Kao, Guoxing Li, Ya Tung Kao, Wei Zhang: Chargers, systems and methods for detecting a power source. O2Micro, August 14, 2012: US08242742 (9 worldwide citation)

A charger includes a detection pin, a voltage divider, and a comparator. The detection pin can couple the charger to a power source via a first data line. The voltage divider and the comparator are coupled to the detection pin. The voltage divider divides a power voltage provided by the power source ...