Ligong Wang from Seattle, WA, age 56

Resumes

Professor At School Of Radiation Medicine And Protection, Medical College Of Soochow University

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Position:

Professor at School of Radiation Medicine and Protection, Medical College of Soochow University

Location:

Suzhou, Jiangsu, China

Industry:

Research

Work:

School of Radiation Medicine and Protection, Medical College of Soochow University - 199 Ren Ai Road, Suzhou, Jiangsu Province 215123, China since Mar 2013
Professor
NYU SOM - New York City Area Sep 2006 - Feb 2013
Associate Research Scientist

Education:

Southeast University, Nanjing, China 1999 - 2004
PhD, Biomedical Engineering Southeast University, Nanjing, China 1996 - 1999
Master, Mechanics Nantong Textile Engineering Institute, Nantong, China 1989 - 1993
Bachelor, Mechanical Engineering

Us Patents

Method Of Detecting And Monitoring Master Device Communication On System Bus
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US Patent:

7380042, May 27, 2008
Filed:

Nov 22, 2005
Appl. No.:

11/285098
Inventors:

Ligong Wang - Round Rock TX, US
Shiguo Luo - Austin TX, US
Bruce A. Miller - Plano TX, US
Assignee:

Dell Products L.P. - Round Rock TX
International Classification:

G06F 13/14
H03K 19/0175
US Classification:

710305, 710110, 710316, 326 63, 713340
Abstract:

A bus monitoring device includes a detector to detect a signal on the bus. The signal is initiated by one of a plurality of devices coupled to the bus. A clamp circuit is included to clamp the signal to a first predefined level in response to the signal being initiated by a first device of the plurality of devices. A comparator circuit compares the signal and a voltage reference to determine whether the first device initiated the signal.

Systems And Methods For Integration Of Charger Regulation Within A Battery System
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US Patent:

7391184, Jun 24, 2008
Filed:

Feb 16, 2005
Appl. No.:

11/058781
Inventors:

Shiguo Luo - Austin TX, US
John J. Breen - Harker Heights TX, US
Ligong Wang - Round Rock TX, US
Assignee:

Dell Products L.P. - Round Rock TX
International Classification:

H02J 7/00
H02J 3/32
US Classification:

320137, 320112, 320128, 320136, 307 48
Abstract:

One or more charger regulation tasks (e. g. , one or more of those tasks typically performed by charger regulator circuitry of a separate battery charging apparatus) are integrated within a battery system (e. g. , a battery pack of a portable information handling system) by utilizing component/s common to the battery system (e. g. , microcontroller and FET components).

Systems And Methods For Detecting Charge Switching Element Failure In A Battery System
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US Patent:

7436151, Oct 14, 2008
Filed:

Dec 23, 2004
Appl. No.:

11/021926
Inventors:

Ligong Wang - Round Rock TX, US
Bruce A. Miller - Plano TX, US
Stephen D. Sterz - Hutto TX, US
Assignee:

Dell Products L.P. - Round Rock TX
International Classification:

H02J 7/00
US Classification:

320134, 320136
Abstract:

Systems and methods for detection of charge switching element failure (e. g. , charge FET switching element) in a battery system, such as a battery system of an information handling system (e. g. notebook computer), in which an increase in cell voltage is employed as a criteria for detecting charge switching element failure.

Parallel Hybrid Battery Pack Charging
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US Patent:

7518338, Apr 14, 2009
Filed:

Apr 13, 2006
Appl. No.:

11/403264
Inventors:

Ligong Wang - Round Rock TX, US
Stephen D. Sterz - Hutto TX, US
Assignee:

Dell Products L.P. - Round Rock TX
International Classification:

H01M 10/46
US Classification:

320125, 320126
Abstract:

For charging a rechargeable hybrid battery pack, a first cell stack coupled in parallel with a second cell stack of the hybrid battery pack are pre-charged in parallel. The cell stack to first complete the pre-charge phase, is selected to receive a normal charge with a constant current while the non-selected one of the cell stack continues to receive the pre-charge. The first cell stack and the second cell stack receive the normal charge in the selected sequence. Upon completion of the normal charge for each cell of the hybrid battery pack, the first cell stack and the second cell stack are trickle-charged in parallel to complete the charging.

Method And System For Charge Rate Adjustment To Enhance Battery Cycle Life
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US Patent:

7518340, Apr 14, 2009
Filed:

Dec 15, 2005
Appl. No.:

11/300721
Inventors:

Stephen D. Sterz - Hutto TX, US
Ligong Wang - Round Rock TX, US
Assignee:

Dell Products L.P. - Round Rock TX
International Classification:

H02J 7/00
US Classification:

320132, 320131
Abstract:

Methods and systems are disclosed for charge current adjustment to enhance battery cycle life thereby allowing batteries to be charged quickly without accelerating the aging process of the battery. As the charge capacity of the battery degrades over time, the charge current for the battery charging cycles is also reduced so that the effective charge rate for the battery is adjusted to account for the reduction in charge capacity. In this way, battery capacity life is enhanced by avoiding an accelerated charge rate as the battery capacity drops over the operational life of the battery. The methods and systems disclosed are useful for battery-powered information handling systems, as well as other devices where fast charging and long cycle life is desirable, such as cell phones, personal digital assistants (PDAs), electric vehicles and/or any other battery powered devices.

Method For Verifying Smart Battery Failures By Measuring Input Charging Voltage And Associated Systems
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US Patent:

7518341, Apr 14, 2009
Filed:

Dec 23, 2004
Appl. No.:

11/021377
Inventors:

Ligong Wang - Round Rock TX, US
Guangyong Zhu - Austin TX, US
Assignee:

Dell Product L.P. - Round Rock TX
International Classification:

H02J 7/00
H02H 3/20
H02H 3/027
H02H 3/08
H02H 7/00
US Classification:

320136, 320134, 361 90, 361 913, 361 931, 361101
Abstract:

A method and associated system are disclosed for verifying charging failures for smart batteries by measuring input charging voltage and associated systems. In one embodiment, a determination is made whether or not a charging current is indicative of a battery failure by utilizing an analog-to-digital (A/D) port to measure the input charging voltage. As long as the measured input charging voltage is below the cell pack voltage or some set voltage value, whichever is higher, the BMU considers a charging current detection to be a false failure indication. If the measured charging voltage is above the cell pack voltage and the set voltage value, the BMU considers the charging current detection to be a positive failure indication. The BMU can then disable the battery or implement other verification steps before disabling the battery, as desired.

Method For Detecting A Defective Charger Circuit
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US Patent:

7538518, May 26, 2009
Filed:

Jul 29, 2004
Appl. No.:

10/901509
Inventors:

Ligong Wang - Round Rock TX, US
John J. Breen - Harker Heights TX, US
Jay L. Taylor - Georgetown TX, US
Assignee:

Dell Products L.P. - Round Rock TX
International Classification:

H02J 7/00
US Classification:

320134, 320112
Abstract:

In a method and system for detecting charger failure, a battery is operable to receive a charge from the charger via a pair of terminals. The battery includes an analog front end (AFE) coupled to the pair of terminals. The AFE is configured to receive at least one input corresponding to voltage measured across the pair of terminals. A battery controller included in the battery is coupled to the AFE by a serial link. The battery controller receives the at least one input via the serial link. In response to the voltage being below a predefined value, the battery controller is placed in a charge_not_received state, which is indicative of the charger being defective.

Battery System Power Path Configuration And Methods For Implementing Same
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US Patent:

7595609, Sep 29, 2009
Filed:

Mar 9, 2006
Appl. No.:

11/371790
Inventors:

Ligong Wang - Round Rock TX, US
John J. Breen - Harker Heights TX, US
Assignee:

Dell Products L.P. - Round Rock TX
International Classification:

H02J 7/00
H02J 7/04
G01N 27/416
G08B 21/00
US Classification:

320134, 320132, 320149, 320155, 324426, 3406361, 34063621
Abstract:

A battery system may be provided with a battery charge current path that is different from the battery discharge current path of the battery system, for example, by providing no controlled charge circuitry (e. g. , providing no C-FETs) in the discharge current path of the battery system to avoid the power loss experienced across the C-FETs of a conventional battery system during battery system discharging operations.