Patents by Inventor Zhifeng Zhang

Zhifeng Zhang 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).

  • Publication number: 20220077681
    Abstract: The present disclosure discloses a charging device, which comprises an energy storage module, an output interface, a detection unit, a switch module, a control module, and a capacitor. The output interface is configured to be electrically coupled to a load. The detection unit detects electrical parameters of the load and the energy storage module. The switch module is electrically coupled between the energy storage module and the output interface. When the load is electrically coupled to the output interface, the control module turns on the switch module based on the electrical parameters of the load and the energy storage module, to switch on an electrical connection between the energy storage module and the output interface. The capacitor is configured to keep the switch module in an on state steadily when the control module turns on the switch module. The present disclosure also discloses an emergency starting method.
    Type: Application
    Filed: November 17, 2021
    Publication date: March 10, 2022
    Inventors: Yun Lei, Mingxing Ouyang, Zhifeng Zhang
  • Publication number: 20220056877
    Abstract: This present disclosure discloses an ignition overcurrent protection device, which includes a switch, a current detection circuit, and a controller. The switch is electrically coupled between a starting power and a power-on connector; the power-on connector is configured for connecting to the automotive power. The current detection circuit is configured for detecting a current value flowing between the starting power and the power-on connector. The controller is coupled to the switch and the current detection circuit. The controller is configured to determine a current range where the current value is located, and determine a preset time threshold corresponding to the current range, and control the switch to be turned off when a duration of the current value reaches the preset time threshold. The present disclosure also provides a starting power equipment and ignition overcurrent protection.
    Type: Application
    Filed: February 25, 2021
    Publication date: February 24, 2022
    Inventors: Yun LEI, Zhifeng ZHANG, Mingxing OUYANG
  • Publication number: 20220060035
    Abstract: A shared charging cabinet and an ejecting control method thereof are provided. The method includes the steps of: a comprehensive ranking of shared power supplies (200) currently contained in the shared charging cabinet (100) is performed according to lending times and remaining power of shared power supplies; when the shared charging cabinet (100) receives a lending instruction, one of the shared power supplies (200) is controlled to be ejected according to the comprehensive ranking in response to the lending instruction. Therefore, the ejecting order of the shared power supplies (200) in this application is determined according to the lending times and the remaining power of the shared power supplies (200), so that the ejecting times of the shared power supplies (200) in the shared charging cabinet (100) is balanced, and the service life of the shared power supplies (200) can be further balanced.
    Type: Application
    Filed: October 21, 2021
    Publication date: February 24, 2022
    Inventors: Yun LEI, Zhifeng ZHANG, Bing ZHANG
  • Patent number: 11205920
    Abstract: The present disclosure discloses an emergency starting power supply, which comprises an energy storage module, an output interface, a first detection module, a switch module and a control module. The first detection module is electrically connected to the output interface, and detects a voltage of an automotive battery through the output interface when the output interface is connected to the automotive battery. The switch module is electrically connected between the energy storage module and the output interface. The control module is electrically connected to the first detection module and the switch module, respectively. The control module is used to determine whether a voltage drop of the battery within a first preset time is greater than a preset voltage drop based on the voltage detected by the first detection module.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: December 21, 2021
    Assignee: SHENZHEN CARKU TECHNOLOGY CO., LIMITED
    Inventors: Yun Lei, Mingxing Ouyang, Zhifeng Zhang
  • Publication number: 20210326460
    Abstract: Systems and methods include obtaining an expression for a Data Loss Prevention (DLP) engine, wherein the expression includes one or more DLP dictionaries that evaluate to a score for comparison with a corresponding threshold and one or more logical operators used to combine an evaluation of the one or more DLP dictionaries; storing the expression in a database associated with a DLP service; monitoring traffic from one or more users; evaluating the traffic using the DLP engine and the expression; and determining a DLP trigger based on a result of the expression that is a logical TRUE.
    Type: Application
    Filed: August 19, 2020
    Publication date: October 21, 2021
    Inventors: Zhifeng Zhang, Arun Bhallamudi, Pooja Deshmukh
  • Patent number: 11118848
    Abstract: A heat-exchanging plate (20), and plate heat exchanger (100) using same. The heat-exchanging plate (20) comprises concave locations (22) and/or convex locations (23), and is provided with multiple heat-exchanging units thereon. At least one inlet and/or at least one outlet of at least one of the heat-exchanging units is controllable.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 14, 2021
    Assignee: DANFOSS MICRO CHANNEL HEAT EXCHANGER (JIAXING) CO., LTD.
    Inventors: Zhifeng Zhang, Wenjian Wei
  • Publication number: 20210180881
    Abstract: A heat-exchanging plate (20), and plate heat exchanger (100) using same. The heat-exchanging plate (20) comprises concave locations (22) and/or convex locations (23), and is provided with multiple heat-exchanging units thereon. At least one inlet and/or at least one outlet of at least one of the heat-exchanging units is controllable.
    Type: Application
    Filed: January 25, 2017
    Publication date: June 17, 2021
    Inventors: Zhifeng Zhang, Wenjian Wei
  • Publication number: 20210135663
    Abstract: An NMOS switch driving circuit and a power supply device are provided. The NMOS switch driving circuit includes a power-supply unit, a switch unit, a power conversion unit, and a driving unit. The power-supply unit is configured to output a first voltage. The switch unit is electrically coupled between the power-supply unit and a first interface and configured to establish or disconnect an electrical coupling between the power-supply unit and the first interface. The power conversion unit includes a port coupled to the power-supply unit and another port electrically coupled to the switch unit via the driving unit. The power conversion unit is configured to convert the first voltage into a constant driving voltage and output the driving voltage to the switch unit via the driving unit to drive the switch unit to be switched on, to establish the electrical coupling between the power-supply unit and the first interface.
    Type: Application
    Filed: October 28, 2020
    Publication date: May 6, 2021
    Inventors: Yun LEI, Zhifeng ZHANG, Jianmeng WU, Changxi CHEN
  • Publication number: 20210077995
    Abstract: Provided is a method of gene sequencing based on a single molecule library preparation on a microwell array chip, the single molecule library being further amplified by PCR on the same microwell array chip, the method including: Step 1: adding a PCR amplification system containing DNA fragments to be tested into the microwell array chip, allowing microwells on the microwell array chip to each individually form reaction spaces and allowing one DNA fragment to be contained in one microwell, Step 1: subjecting the sealed microwell array chip after step 1 to PCR amplification reaction on a PCR machine, Step 3: denaturing amplified double-stranded DNA molecules of the DNA fragment in individual microwell to single-stranded DNA molecules, Step 4: allowing sequencing primer S2 molecules to be paired with the single-stranded DNA molecules of the DNA fragment in individual microwell via annealing, Step 5: the dNTP added into microwells in sequence of dGTP, dCTP, dATP and dTTP is paired with a base under sequencing, wi
    Type: Application
    Filed: April 12, 2019
    Publication date: March 18, 2021
    Inventors: Yabao Liu, Yaofei Yue, Zhifeng Zhang
  • Patent number: 10876801
    Abstract: A heat-exchanging plate (20), and plate heat exchanger (100) using same. The heat-exchanging plate (20) comprises concave locations (22) and/or convex locations (23). In at least one partial region of the heat-exchanging plate (20), a transitional curved surface between at least two adjacent concave location (22) and/or convex location (23) is configured to be controllable.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: December 29, 2020
    Assignee: DANFOSS MICRO CHANNEL HEAT EXCHANGER (JIAXING) CO., LTD.
    Inventors: Zhifeng Zhang, Wenjian Wei
  • Publication number: 20200361405
    Abstract: The present disclosure discloses an on-board starting power supply detachably installed in a vehicle. The on-board starting power supply includes: an energy storage module configured to store electrical energy; a first output interface electrically coupled to the energy storage module and a starting device of the vehicle; and a plurality of second output interfaces respectively electrically coupled to the energy storage module and a variety of electrical equipments. The energy storage module is configured to output an instantaneous large current for the starting device through the first output interface to start the starting device and output a corresponding working voltage to a corresponding electrical equipment through the plurality of second output interfaces. The present disclosure can not only start the vehicle, but also includes a plurality of second output interfaces that can be coupled to a variety of electrical equipments, thereby improving a versatility of the on-board starting power supply.
    Type: Application
    Filed: August 30, 2018
    Publication date: November 19, 2020
    Inventors: Yun LEI, Zhifeng ZHANG
  • Patent number: 10823514
    Abstract: Provided are a reinforcer (30) used for a plate heat exchanger (100) and a plate heat exchanger (100), the reinforcer (30) being used to reinforce an area around an opening (13) of at least one heat exchange plate (10). The plate heat exchanger (100) comprises multiple heat exchange plates (10); a heat exchange space formed between adjacent heat exchange plates (10) of the multiple heat exchange plates (10); a heat exchange channel (11) formed between the heat exchange plates (10), wherein the heat exchange channel (11) is used for a heat exchange medium to flow into or out of the plate heat exchanger (100), and is constituted by openings (13) in the multiple heat exchange plates (10); and a reinforcer (30), used to reinforce an area around an opening (13) in at least one heat exchange plate (10).
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: November 3, 2020
    Assignee: Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd
    Inventors: Zhifeng Zhang, Hongbing Chen, Hua Li, Pierre Olivier Pelletier, Shaoyi Chen
  • Patent number: 10782272
    Abstract: An analytical method for precipitated particles using a co-precipitation reaction in includes feeding streams and a tracking metal into a reaction vessel; collecting a precipitated product containing the tracking metal from the reaction vessel in increments of time to obtain product samples; filtering each collected product sample to separate precipitated particles from filtrate; and performing elemental analysis for the tracking metal in the precipitated particles of each collected product sample and measuring a concentration of the tracking metal in the precipitated particles, to obtain a residence time distribution of the precipitated particles in the reaction vessel according to the concentration of the tracking metal in the precipitated particles. Therefore the preferred residence time of the precipitated particles in the reaction vessel can be ascertained, so that it is clear when the precipitated particles should be collected from the reaction vessel.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: September 22, 2020
    Assignee: MICROVAST POWER SYSTEMS CO., LTD.
    Inventors: Bryan Yonemoto, Xiao Zhang, Wenjuan Liu Mattis, Zhifeng Zhang
  • Publication number: 20200295592
    Abstract: The present disclosure discloses an emergency starting power supply, which comprises an energy storage module, an output interface, a first detection module, a switch module and a control module. The first detection module is electrically connected to the output interface, and detects a voltage of an automotive battery through the output interface when the output interface is connected to the automotive battery. The switch module is electrically connected between the energy storage module and the output interface. The control module is electrically connected to the first detection module and the switch module, respectively. The control module is used to determine whether a voltage drop of the battery within a first preset time is greater than a preset voltage drop based on the voltage detected by the first detection module.
    Type: Application
    Filed: April 29, 2020
    Publication date: September 17, 2020
    Inventors: Yun LEI, Mingxing OUYANG, Zhifeng ZHANG
  • Publication number: 20200203718
    Abstract: A method of preparing cathode particles using a co-precipitation reaction in a reactor is disclosed. A feed stream (a) containing metal cations is fed into the reactor, and a feed stream (b) containing anions is fed into the reactor, wherein a ratio of the metal cations in the feed stream (a) is continuously changed from A1 at time t1 to A2 at time t2. The feed stream (a) and the feed stream (b) are contacted in the reactor to form precipitated precursor particles, and at least one transition metal component in the particle has a non-linear continuous concentration gradient profile over at least a portion along a thickness direction of the particle.
    Type: Application
    Filed: August 30, 2018
    Publication date: June 25, 2020
    Inventors: BRYAN T. YONEMOTO, HUIJIE GUO, XIAO ZHANG, ZHIFENG ZHANG, XUELEI SUN, TIANSHU DENG
  • Patent number: 10690420
    Abstract: A heat exchange tube (51) for a heat exchanger, heat exchanger and assembly method thereof. The heat exchange tube (51) is a combined heat exchange tube having a space (55) at its center, and the space (55) is configured to accommodate an insertion member (57), such that the combined heat exchange tube is expanded in and joined with a corresponding fin hole (53) in the heat exchanger. A heat exchange tube that is minute or has a small inner diameter can thus be expanded in a heat exchanger fin without employing a brazing process.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: June 23, 2020
    Assignee: DANFOSS MICRO CHANNEL HEAT EXCHANGER (JIAXING) CO., LTD.
    Inventors: Zhifeng Zhang, Wenjian Wei
  • Patent number: 10670314
    Abstract: Disclosed in the present invention is a refrigeration system, comprising: an evaporator and a condenser connected by a pipeline, wherein: at least one of the evaporator and the condenser comprises a heat exchange tube, the heat exchange tube comprising a first channel and a second channel, and the first channel and the second channel of the heat exchange tube forming different flow paths of the refrigeration system.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: June 2, 2020
    Assignee: DANFOSS MICRO CHANNEL HEAT EXCHANGER (JIAXING) CO., LTD
    Inventors: Wenjian Wei, Xiangxun Lu, Zhifeng Zhang
  • Publication number: 20200131046
    Abstract: A method for producing cathode particles is provided. The method includes: providing a plurality of precipitation zones from i=1 to N, wherein the precipitation zones are connected in series, each precipitation zone comprises a feed stream (ai) providing the precipitation cations, a feed stream (bi) providing the precipitation anions, a continuous outflow (ci) of precipitation particle slurry to the next precipitation zone, and a continuous inflow (ci?1) of precipitation particle slurry from the prior precipitation zone, and forming, in the precipitation zones, precipitated particles, and finally to form, in the precipitation zone N, precursor particles comprised of N layers, wherein layer i of each particle is precipitated and formed in the precipitation zone i, wherein N is not less than 3, and when i=1, there is no inflow (ci?1).
    Type: Application
    Filed: July 13, 2018
    Publication date: April 30, 2020
    Inventors: BRYAN YONEMOTO, WENJUAN LIU MATTIS, ZHIFENG ZHANG, XIAO ZHANG
  • Publication number: 20200006804
    Abstract: The present invention relates to a lithium ion battery silicate positive electrode material, and the preparation and an application thereof. Specifically, a silicate positive electrode material is disclosed, which includes a core LiaCoxT1-xSiyM1-yO4 and a carbon coating layer coated on an outer surface of the core. Also disclosed are the preparation and an application of the positive electrode material. A lithium ion battery prepared using the positive electrode material as a positive electrode active material has a discharge capacity greater than 130 mAh/g under a discharge density of 5 mA/g, and a discharge voltage platform greater than 4V.
    Type: Application
    Filed: April 18, 2018
    Publication date: January 2, 2020
    Inventors: Zhifeng Zhang, Zhenlien Chen, Jun Li, Xianhui Zhang
  • Publication number: 20190376749
    Abstract: A heat-exchanging plate (20), and plate heat exchanger (100) using same. The heat-exchanging plate (20) comprises concave locations (22) and/or convex locations (23), and is provided with multiple heat-exchanging units thereon. At least one inlet and/or at least one outlet of at least one of the heat-exchanging units is controllable.
    Type: Application
    Filed: January 25, 2017
    Publication date: December 12, 2019
    Inventors: Zhifeng Zhang, Wenjian Wei