Patents by Inventor Ligong Wang

Ligong Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11868191
    Abstract: Methods for providing power to electronic components (e.g., servers in a datacenter, or other devices) can include providing AC power received from an external source to the devices. During periods of high demand, when costs of external AC power exceed a threshold, or when availability of external AC power is decreased, distributed backup power supply systems can be utilized to temporarily offset or to reverse consumption of external AC power. Such distributed backup power systems can be periodically recharged during periods of low power demand, and thus consistently retain adequate charge for backup use in the event of power loss.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: January 9, 2024
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, Darin Lee Frink
  • Publication number: 20230159936
    Abstract: Provided are an immunomodulatory CpG ODN chemically modified by means of a structure as shown by general formula I and the use thereof. The CpG ODN has an immunostimulatory activity, can stimulate the proliferation of B cells, and produce specific cytokines. The above-mentioned CpG ODN can be used as a vaccine adjuvant alone or in combination with other adjuvants to exert a synergistic effect, and can also be used in the preparation of drugs for preventing or treating tumors, infections, and allergies.
    Type: Application
    Filed: March 31, 2021
    Publication date: May 25, 2023
    Inventors: Ligong WANG, Yan SHAO
  • Patent number: 11360531
    Abstract: Methods for redeploying used battery units can include capturing performance data of an energy storage unit containing a battery unit at the end of its useful life for a primary application, and determining, based on the performance data, a remaining energy output capacity. If the battery unit meets or exceeds threshold performance criteria, the battery unit can be incorporated into a second energy storage unit and reconfigured to reflect the remaining energy output capacity. The second storage unit can include the redeployed battery unit alone, or in combination with any suitable number of additional battery units.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: June 14, 2022
    Assignee: Amazon Technologies, Inc.
    Inventor: Ligong Wang
  • Patent number: 11360153
    Abstract: Methods and systems for rerating a battery pack based on fuel gauge data are described, including capturing operational or fuel gauge data for a first battery pack that contains a plurality of battery cells, and determining, based on the fuel gauge data, a remaining capacity of the first battery pack. When the remaining capacity of the first battery pack falls below the minimum capacity; a new battery pack can be configured using some or all of the battery cells, and a second fuel gauge can be configured with new initial capacity and minimum capacity ratings.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 14, 2022
    Assignee: Amazon Technologies, Inc.
    Inventor: Ligong Wang
  • Patent number: 11334135
    Abstract: Methods and systems for controlling distribution of a main power supply and backup power supply can include detecting an output load on the main power supply from one or more electronic devices in excess of a threshold, which may correspond to a high efficiency band of the main power supply, and causing a backup power supply to provide an amount of supplemental power to the one or more electronic devices based in part on a difference between the output load and the threshold.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: May 17, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, Darin Frink
  • Patent number: 11296527
    Abstract: A power supply system can include a plurality of battery backup units and a control unit. The battery backup units may be utilized to supply backup energy to a power supply unit, for example, in case of a power outage event. The control unit can gauge a respective capacity, temperature, age, and/or other characteristic of each respective battery backup unit of the plurality of battery backup units. The control unit can designate a particular battery backup unit of the plurality of battery backup units as a spared unit, e.g., to be spared in the power outage event. The designation may be based at least in part on the respective capacity or other characteristic of each respective battery backup unit gauged.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: April 5, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, Michael Jon Moen
  • Patent number: 10983785
    Abstract: Information about firmware modules for a power unit (e.g., a battery backup unit or a power supply unit) can be downloaded, along with the firmware modules themselves. The firmware modules, which may constitute less than a complete firmware re-flash, can be used to update firmware of the power unit from a first version type to a second version type.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: April 20, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: David Edward Bryan, Ligong Wang
  • Patent number: 10965148
    Abstract: A method for managing backup power in the event of a power supply deficit or disruption includes detecting the power supply deficit and recruiting some or all of the backup battery units associated with electronic devices in the system to provide a backup power supply. Depending on the severity of the power supply failure, the selected backup battery units can be reconfigured from providing power to local electronic devices to providing power along a backup power supply pathway to other electronic components in the system.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: March 30, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, David Bryan
  • Patent number: 10770911
    Abstract: Calibrating a battery capacity gage employs a controlled discharge of a backup battery unit. A method of updating a capacity gage includes charging a backup battery unit to a predetermined high charge level. A first amount of energy is discharged from the backup battery unit at a first controlled discharge rate so as to discharge the backup battery unit from the predetermined high charge level to a first low charge level. The backup battery unit is charged back to the predetermined high charge level. A power system controller estimates, based on the first amount of energy and the first controlled discharge rate, a second amount of energy that can be discharged from the backup battery unit at a second controlled discharge rate greater than the first controlled discharge rate. The capacity gage is updated based on the second amount of energy estimated by the power system controller.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: September 8, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Darin Lee Frink, Ligong Wang
  • Patent number: 10725514
    Abstract: Systems for controlling cycling operations for backup battery units in a datacenter include groups of backup battery units and power supply units that can supply power to datacenter components from either a primary power supply or, the backup battery units. Each group of multiple battery units has sufficient capacity to provide backup power to a respective electronic device even when one battery unit is offline. In operation, a controller receives requests to perform cycling operations, e.g. maintenance, on the backup batteries. Upon each request, the system retrieves status information corresponding to each backup battery unit and determines whether the remainder of the backup battery units can supply sufficient power to meet or exceed power demand, and either allow or prevent each backup battery unit from performing the cycling operation in response to determining whether the remainder of the backup battery units can or cannot supply sufficient power.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 28, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, Darin Lee Frink
  • Patent number: 10677852
    Abstract: Methods and related systems conduct a capacity check of a battery via a partial discharge cycle. A method of estimating a total capacity of a battery includes partially discharging the battery at a controlled discharge rate so as to discharge an amount of energy from the battery over a period of time. An output voltage of the battery is measured during the period of time. A total capacity of the battery is estimated based on the amount of energy discharged from the battery during the partial discharge cycle and the output voltage of the battery measured during the partial discharge cycle.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: June 9, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, Darin Lee Frink
  • Patent number: 10587140
    Abstract: A power supply system can include a plurality of battery backup units and a control unit. The battery backup units may be utilized to supply backup energy to a power supply unit, for example, in case of a power outage event. The control unit can gauge a respective capacity, temperature, age, and/or other characteristic of each respective battery backup unit of the plurality of battery backup units. The control unit can designate a particular battery backup unit of the plurality of battery backup units as a spared unit, e.g., to be spared in the power outage event. The designation may be based at least in part on the respective capacity or other characteristic of each respective battery backup unit gauged.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: March 10, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, Michael Jon Moen
  • Patent number: 10283987
    Abstract: Described herein is a smart battery unit capable of assessing its suitability to support a particular load. In some embodiments, the battery unit may receive an indication of power requirements for the particular load with respect to a period of time and may evaluate a total electrical capacity that would be required to support such a load based on those power requirements. The battery backup unit may monitor and dynamically update a full-charge capacity value related to its battery cells as well as the capacity requirement related to the load. The two values may then be compared to determine whether the battery backup unit is capable of supporting the load. If the full-charge capacity value is less than the capacity requirement for the load, then the battery unit may determine that it is not suitable for that load.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 7, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Ligong Wang, Darin Lee Frink
  • Patent number: 10270071
    Abstract: Systems and methods are provided that employ voltage regulated management of battery backup for information handling systems, such as blade server systems. The disclosed systems and methods may be implemented for an information handling system using multiple battery subsystems in a single battery backup unit (BBU) or using multiple battery backup units, and the multiple battery subsystems or BBUs may be individually controlled and managed using defined protocols and architectures.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: April 23, 2019
    Assignee: Dell Products L.P.
    Inventors: Ligong Wang, John J. Breen
  • Patent number: 10158247
    Abstract: A battery backup unit for supplying electrical energy in response to a power event affecting an ability of a power supply unit to deliver electrical energy may be configured to, in response to the power event, generate a regulated output voltage having a first voltage magnitude for a first period of time to limit power generated by the battery backup unit to a first power magnitude during the first period of time, and after the first period of time, generate the output voltage having a second voltage magnitude lesser than the first voltage magnitude for a second period of time to limit power generated by the battery backup unit to a second power magnitude lesser than the first power magnitude, wherein the second power magnitude is a function of a continuous maximum power supported by the battery backup unit based on characteristics of the battery backup unit.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: December 18, 2018
    Assignee: Dell Products L.P.
    Inventors: Ligong Wang, Guangyong Zhu
  • Patent number: 10139451
    Abstract: A method used for determining the capacity of a battery. The method includes determining, via a controller, if the battery has a first capacity sufficient to support a conditioning cycle. In response to determining that the battery has the first capacity sufficient to support the conditioning cycle, the conditioning cycle is activated. The method includes partially discharging the battery at a constant rate while measuring a plurality of battery parameters. A second capacity of the battery is estimated based on the battery parameters measured at the constant discharge rate. The method increases estimation accuracy of the battery's capacity.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: November 27, 2018
    Assignee: Dell Products, L.P.
    Inventors: Ligong Wang, Dit Charoen
  • Patent number: 10132870
    Abstract: A system for dynamic discharging to detected derated battery cells. In such a system, a battery cell capacity, cell voltage, as well as a time to discharge are used in combination to identify good or bad battery cells. More specifically, during a dynamic discharge cycle, an accumulated discharge capacity value is calculated and monitored by a charge level battery gas gauge via analog to digital (A/D) converters and an internal discharge time value is monitored. One of the values is assigned as a fixed value and the other value is used to identify good or bad batter cells.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: November 20, 2018
    Assignee: Dell Products L.P.
    Inventors: Ligong Wang, Shane Chiasson
  • Patent number: 10116012
    Abstract: Desktop power use behavior may be detected while a portable information handling system or any other type of battery powered information handling system is operating on external power such as an AC adapter. The desktop power use behavior may be detected by monitoring one or more power usage parameters to detect usage characteristics that indicate a battery powered information handling system is being operated in a manner that is similar to operation of a desktop information handling system. Upon detection of desktop behavior, one or more processing devices of the information handling system may respond by taking one or more desktop use response actions.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: October 30, 2018
    Assignee: Dell Products L.P.
    Inventors: Chia-Fa Chang, Hua Chung, Ligong Wang, Yung Fa Chueh
  • Patent number: 10052378
    Abstract: The present invention provides a pharmaceutical composition for inducing immune response in a subject, comprising: (a) an antigen with a concentration ranging from 1 ?g/ml to 100 ?g/ml; (b) CpG oligonucleotides having a sequence of 5?-tcgacgttcgtcgttcgtcgttc-3?, with a concentration ranging from 25 ?g/ml to 500 ?g/ml, and (c) an aluminum adjuvant with a concentration ranging from 25 ?g/ml to 500 ?g/ml. Such pharmaceutical composition can induce or boost immune response against antigen in the subject.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: August 21, 2018
    Assignee: Changchun Huapu Biotechnology Co., LTD.
    Inventors: Ligong Wang, Yan Shao
  • Publication number: 20180175664
    Abstract: A battery backup unit for supplying electrical energy in response to a power event affecting an ability of a power supply unit to deliver electrical energy may be configured to, in response to the power event, generate a regulated output voltage having a first voltage magnitude for a first period of time to limit power generated by the battery backup unit to a first power magnitude during the first period of time, and after the first period of time, generate the output voltage having a second voltage magnitude lesser than the first voltage magnitude for a second period of time to limit power generated by the battery backup unit to a second power magnitude lesser than the first power magnitude, wherein the second power magnitude is a function of a continuous maximum power supported by the battery backup unit based on characteristics of the battery backup unit.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 21, 2018
    Applicant: Dell Products L.P.
    Inventors: Ligong WANG, Guangyong ZHU