Patents by Inventor Jialiang Zhang

Jialiang 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).

  • Patent number: 10135278
    Abstract: The present disclosure provides a charging method and a charging system. The charging system includes a charging adapter and a mobile terminal, the charging adapter includes a second controller and an adjusting circuit, and the mobile terminal includes a cell detection circuit and a cell. The cell detection circuit acquires a voltage value of the cell, and sends the voltage value of the cell to the second controller, the second controller searches a threshold range table for a current adjusting instruction matched with a threshold range containing the voltage value of the cell, and sends the current adjusting instruction to the adjusting circuit, and the adjusting circuit performs a current adjustment according to the current adjusting instruction and outputs a power signal after the current adjustment, in which the threshold range table records threshold ranges and current adjusting instructions having a one-to-one mapping relation with threshold ranges.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: November 20, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Wenqiang Cheng, Fuchun Liao, Liangcai Peng, Kewei Wu
  • Publication number: 20180331561
    Abstract: The present disclosure discloses a charging system and a charging method and a power adapter. The system includes a battery, a first rectifier, a switch unit, a transformer, a second rectifier, a first charging interface, a sampling unit and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current sampling value and/or a voltage sampling value sampled by the sampling unit, such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement of the battery.
    Type: Application
    Filed: July 26, 2016
    Publication date: November 15, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang ZHANG, Shebiao CHEN, Jun ZHANG, Chen TIAN, Shiming WAN, Jiada LI
  • Publication number: 20180331612
    Abstract: The present disclosure discloses a charging method, a power adapter and a charging device. The power adapter includes: a first rectification unit, configured to rectify a first alternating current and output a voltage with a first pulsating waveform; a switch unit, configured to modulate the voltage according to a control signal; a transformer, configured to output a plurality of voltages with pulsating waveforms according to the modulated voltage; a synthesizing unit, configured to synthesis the plurality of voltages to output a second alternating current; a sampling unit, configured to sample voltage and/or current of the second alternating current to obtain a voltage sampling value and/or a current sampling value; and a control unit, configured to output the control signal to the switch unit, and to adjust a duty ratio of the control signal according to the current sampling value and/or the voltage sampling value.
    Type: Application
    Filed: July 26, 2016
    Publication date: November 15, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang ZHANG, Jun ZHANG, Chen TIAN, Shebiao CHEN, Jiada LI, Shiming WAN
  • Publication number: 20180331560
    Abstract: Disclosed are an adapter and a charging control method. The adapter includes a power conversion unit, a sampling and holding unit, and a current collecting and controlling unit. The power conversion unit is configured to convert input alternating current to obtain output voltage and output current, in which the output current is first current with first pulsating waveform. The sampling and holding unit is configured to sample the first current when the sampling and holding unit is in a sampling state, and to hold a peak value of the first current when the sampling and holding unit is in a holding state. The current collecting and controlling unit is configured to determine whether the sampling and holding unit is in the holding state, and to collect the peak value of the first current when the sampling and holding unit is in the holding state.
    Type: Application
    Filed: January 7, 2017
    Publication date: November 15, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen TIAN, Jialiang ZHANG
  • Publication number: 20180331559
    Abstract: An adapter, a charging control method and charging system are disclosed. The adapter includes a primary unit, a power adjustment unit and a secondary unit. The primary unit converts an input alternating current into a first current with a first pulsating waveform. The adapter is capable of operating in a constant current mode. A peak value of the first current is greater than a current value corresponding to a current limiting point of the constant current mode. The power adjustment unit samples current outputted by the adapter to obtain a current sampling value, modules the first current according to the current sampling value. The secondary unit converts current coupled from the primary unit to the secondary unit into the current. The current outputted by the adapter is a second current with a second pulsating waveform. A peak value of the second current is equal to the current value corresponding to the current limiting.
    Type: Application
    Filed: January 7, 2017
    Publication date: November 15, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen TIAN, Jialiang ZHANG
  • Publication number: 20180331563
    Abstract: The present disclosure provides an adapter and a charging control method. The adapter includes: a power converter, configured to convert input alternating current to obtain an output voltage and an output current of the adapter, the output current of the adapter being a current with a first pulsating waveform; a sampling and holding unit, coupled to the power converter, and configured to sample the current with the first pulsating waveform in a sampling state, and to hold a peak value of the current with the first pulsating waveform in a holding state; a current sampling controller, coupled to the sampling and holding unit, and configured to determine whether the sampling and holding unit is in the holding state, and to sample the peak value of the current with the first pulsating waveform held by the sampling and holding unit when the sampling and holding unit is in the holding state.
    Type: Application
    Filed: January 7, 2017
    Publication date: November 15, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen TIAN, Jialiang ZHANG
  • Publication number: 20180331562
    Abstract: The present disclosure discloses a charging system and a charging method for a terminal, and a power adapter. The charging system includes a power adapter and a terminal. The power adapter includes a first rectification unit, a transformer, a second rectification unit, a sampling unit, and a modulating control unit. The modulating control unit modulates a voltage with a first pulsating waveform according to a voltage sampling value sampled by the sampling unit, such that a voltage with a third pulsating waveform outputted by the second rectification unit meets a charging requirement. The terminal includes a second charging interface and a battery. The second charging interface is coupled to the battery.
    Type: Application
    Filed: July 26, 2016
    Publication date: November 15, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang ZHANG, Jun ZHANG, Chen TIAN, Shebiao CHEN, Jiada LI, Shiming WAN
  • Patent number: 10128677
    Abstract: In embodiments of the present disclosure, after a mobile terminal has recognized a type of a power adapter, the mobile terminal actively initiates a quick charging request, and negotiates with the power adapter via handshake communication to determine charging parameters. The power adapter charges a battery of the mobile terminal via a multi-stage constant current mode.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: November 13, 2018
    Assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
    Inventors: Chen Tian, Jialiang Zhang
  • Patent number: 10122201
    Abstract: The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a battery, a first rectifier, a switch unit, a transformer, a compositing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a voltage sampling value and/or a current sampling value obtained by primary sampling of the sampling unit, such that a second alternating current outputted by the compositing unit meets a charging requirement. The second alternating current is applied to the battery.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: November 6, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Chen Tian, Jun Zhang, Shebiao Chen, Shiming Wan, Jiada Li
  • Patent number: 10122190
    Abstract: A power adapter, a terminal, and a method for handling an impedance anomaly in a charging loop are provided. The power adapter includes a power conversion unit and a charging interface. The power conversion unit forms a charging loop with a terminal through the charging interface. The power adapter includes a communications unit, a detection unit, and an anomaly handling unit. The communications unit is configured to receive voltage indicative information from the terminal, the voltage indicative information indicating an input voltage of the terminal. The detection unit is configured to detect an output voltage of the power adapter. The exception processing unit is configured to determine whether an impedance of the charging loop is abnormal according to a difference between the input voltage and the output voltage, and to control the charging loop to enter into a protection state if the impedance of the charging loop is abnormal.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: November 6, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Jialiang Zhang
  • Patent number: 10110028
    Abstract: A quick charging control method and system are suitable for mobile terminals. The method includes: a first controller obtaining a voltage value of a cell, and sending the voltage value to a second controller; the second controller searching a threshold segment table to find a current regulation instruction matched with a threshold segment containing the voltage value of the cell, and sending the current regulation instruction to a regulation circuit; the regulation circuit performing a current regulation according the current regulation instruction, and outputting a power signal; the second controller sending a second switch-off instruction to the first controller and a second switch circuit respectively if second abnormal charging information is detected; and the second switch circuit, controlling the charging adapter to stop sending the power signal after the current regulation if the second switch circuit receives the second switch-off instruction.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: October 23, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Kewei Wu, Jun Zhang, Liangcai Peng, Fuchun Liao
  • Publication number: 20180294666
    Abstract: A charging system for a terminal, a charge method, and a terminal are provided. The charging system includes a power adapter and the terminal. The terminal includes a battery, a fast charging circuit, a voltameter and a comparator circuit. The fast charging circuit applies the voltage with a pulsating waveform to the battery and acquires a battery voltage threshold value. The voltameter adjusts a reference voltage based on the battery voltage threshold value. The comparator circuit outputs a reverse signal to the fast charging circuit when a battery voltage reaches the reference voltage. The fast charging module adjusts a charging state through the power adapter.
    Type: Application
    Filed: January 7, 2017
    Publication date: October 11, 2018
    Inventors: Chen TIAN, Jialiang ZHANG
  • Patent number: 10090700
    Abstract: The present disclosure discloses a charging device, a charging method, a power adapter and a terminal. The device includes: a charging receiving terminal configured to receive a first alternating current; a voltage adjusting circuit, including a first rectifier configured to rectify the first alternating current and output a first voltage with a first pulsating waveform, a switch unit configured to modulate the first voltage according to a control signal to obtain a modulated first voltage, a transformer configured to output a plurality of voltages with pulsating waveforms according to the modulated first voltage, and a synthesizing unit configured to synthesize the plurality of voltages to output a second alternating current; and a central control module configured to output the control signal to the switch unit so as to adjust voltage and/or current of the second alternating current in response to a charging requirement of the battery.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: October 2, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Shebiao Chen, Jun Zhang, Chen Tian, Shiming Wan, Jiada Li
  • Publication number: 20180278068
    Abstract: An electronic device and a power adapter are provided. The power adapter comprises a power circuit, a main control circuit, a potential adjustment circuit, a current detection circuit, a voltage detection circuit and an output switch circuit. When a conventional charging or a quick charging is performed on the battery in the electronic device, the main control circuit determines whether the output current of the power adapter is greater than a current threshold according to the current detecting signal and determines whether the output voltage of the power adapter is greater than a voltage threshold according to the voltage detecting signal; if the output current of the power adapter is greater than the current threshold and/or the output voltage of the power adapter is greater than the voltage threshold, the main control circuit controls the output switch circuit to turn off the direct current output of the power adapter.
    Type: Application
    Filed: May 25, 2018
    Publication date: September 27, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang ZHANG, Fuchun LIAO, Nianfeng LIU, Kewei WU, Jun ZHANG, Yuanxiang HU
  • Publication number: 20180278069
    Abstract: A charging circuit and a mobile terminal are provided. The charging circuit is coupled between a charging interface and a battery of a mobile terminal. The charging circuit includes a first circuit, a capacitive coupling element, and a second circuit connected in series between the charging interface and the battery. The capacitive coupling element is configured to disconnect a direct current (DC) path of the charging circuit. The capacitive coupling element includes at least one capacitor and the capacitor of the capacitive coupling element is one of the following capacitors: a capacitor composed of a printed circuit board (PCB) and a capacitor composed of a flexible printed circuit (FPC) board. A size, shape, or thickness of the capacitor of the capacitive coupling element is designed based on a structure of the mobile terminal.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 27, 2018
    Inventor: Jialiang Zhang
  • Publication number: 20180278070
    Abstract: A quick charging method, a power adapter, and a mobile terminal are provided. The method includes: transmitting, by the power adapter, clock signal to the mobile terminal via a first data line of the USB interface in a process of that the power adapter is coupled to the mobile terminal, in which the clock signal indicates a communication sequence between the power adapter and the mobile terminal; conducting, by the power adapter, a bidirectional communication with the mobile terminal via a second data line of the USB interface under control of the communication sequence, so as to determine to charge the mobile terminal in the quick charging mode; and adjusting, by the power adapter, a charging current of the power adapter to the charging current corresponding to the quick charging mode to charge the mobile terminal.
    Type: Application
    Filed: May 25, 2018
    Publication date: September 27, 2018
    Inventor: Jialiang Zhang
  • Publication number: 20180278073
    Abstract: A charging circuit and a mobile terminal are provided. The charging circuit is coupled between a charging interface and a battery. The charging circuit includes a first circuit, a magnetic coupling element, and a second circuit connected in series between the charging interface and the battery. The first circuit is configured to receive a first current from the charging interface and convert the first current to a second current with magnitude and/or direction changed. The charging interface is a universal serial bus interface and the first current is a direct current. The magnetic coupling element includes a first coil and a second coil, the first coil is connected with the first circuit, the second coil is connected with the second circuit, and the first coil and the second coil are separated from each other to disconnect a direct current path of the charging circuit when the first circuit fails.
    Type: Application
    Filed: May 25, 2018
    Publication date: September 27, 2018
    Inventor: Jialiang Zhang
  • Patent number: 10082532
    Abstract: The present disclosure provides a detection circuit and a method for detecting an abnormal interface coupling. The detection circuit includes: a power circuit; a first USB interface, including a first power wire and a first signal wire, in which a power end of the first power wire is coupled to the power circuit; a second USB interface, including a second power wire and a second signal wire, in which the second USB interface is coupled with the first USB interface, such that the second signal wire is coupled with the first signal wire; and a controller, configured to acquire a voltage difference between a voltage of the first power wire and a voltage of the second power wire, and to determine whether the interface coupling is abnormal according to the voltage difference.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: September 25, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Kewei Wu, Jie Wu, Xingwei Yuan, Feiwu Shuai
  • Publication number: 20180269700
    Abstract: An adapter and a method of controlling a charging process are provided. The adapter includes a power converting circuit and a control circuit. The power converting circuit is configured to convert inputted alternating current to generate output voltage and output current of the adapter, the power converting circuit comprising a secondary filter circuit. The control circuit is coupled to the secondary filter circuit and configured to control the secondary filter circuit to operate when the adapter operates in the first charging mode, so that the adapter outputs constant direct current, and configured to control the secondary filter circuit not to operate when the adapter operates in the second charging mode, so that the adapter outputs an alternating current or a pulsating direct current.
    Type: Application
    Filed: January 7, 2017
    Publication date: September 20, 2018
    Inventors: Chen TIAN, Jialiang ZHANG
  • Publication number: 20180269697
    Abstract: A chargeable device and a charging method are proposed. The chargeable device includes a charging interface and a first charging circuit coupled to the charging interface. The first charging circuit receives voltage and current outputted by an adapter through the charging interface and to apply the voltage and current outputted by the adapter onto two terminals of multiple cells coupled in series built in the chargeable device to charge the multiple cells directly.
    Type: Application
    Filed: February 24, 2017
    Publication date: September 20, 2018
    Applicant: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
    Inventors: Jialiang ZHANG, Chen TIAN, Jun ZHANG, Shebiao CHEN, Shiming WAN, Jiada LI