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).
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Patent number: 10637276Abstract: An adapter and a method for charging control are disclosed. The adapter includes a power conversion unit, a voltage feedback unit, a current feedback unit, and a power adjustment unit. The power adjustment unit includes an input end coupled to an output end of the voltage feedback unit to an output end of the current feedback unit, and an output end coupled to the power conversion unit. The power adjustment unit is used to receive the voltage feedback signal and the current feedback signal, and stabilize the output voltage and output current of the adapter when the voltage feedback signal indicates that the output voltage of the adapter has reached the target voltage or the current feedback signal indicates the output current of the adapter has reached the target current.Type: GrantFiled: June 24, 2019Date of Patent: April 28, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Patent number: 10630096Abstract: A charging control apparatus and method for an electronic device are provided. During a process of charging, the power adapter first charges the battery with a constant-voltage direct current output, and then after the power adapter receives a quick-charging instruction, the power adapter adjusts an output voltage according to the voltage of the battery fed back by the charging control module, and if the output voltage meets a quick-charging voltage condition pre-set by the charging control module, the power adapter adjusts an output current and the output voltage respectively according to a preset quick-charging current value and a preset quick-charging voltage value for quick-charging the battery, and meanwhile the charging control module introduces direct current from the power adapter for charging the battery; during a process of quick-charging, the power adapter adjusts the output current in real time according to the output voltage thereof and the voltage of the battery.Type: GrantFiled: December 14, 2018Date of Patent: April 21, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Jialiang Zhang, Kewei Wu, Jun Zhang, Dashuai Huang, Yuanxiang Hu
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Publication number: 20200117260Abstract: Provided are a terminal device and a method and system for monitoring battery safety in a terminal device. The method includes the following. Power-off information generated upon disconnection between a battery connector of the terminal device and a main board of the terminal device is acquired. Whether the disconnection between the battery connector and the main board is an unauthorized disconnection is determined according to the power-off information. Upon determining that the disconnection between the battery connector and the main board is the unauthorized disconnection, determine that a battery of the terminal device has safety hazard and control the terminal device to send reminder information indicative of battery abnormality.Type: ApplicationFiled: December 13, 2019Publication date: April 16, 2020Inventors: Yong SUN, Zhihua HU, Shangbo LIN, Jialiang ZHANG, Hui ZHANG, Shebiao CHEN
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Patent number: 10622829Abstract: A charging system, a charging method, and a power adapter are provided. The power adapter includes a first rectification unit, a switch unit, a transformer, a second rectification unit, a first charging interface, a sampling unit, and a control unit. The control unit is configured to output a control signal to the switch unit, and adjust a duty ratio of the control signal based on a voltage sampling value and/or a current sampling value sampled by the sampling unit, in which a voltage of a third pulsating waveform output from the second rectification unit meets the charging requirements. The terminal includes a second charging interface and a battery. The second charging interface is coupled with the battery. When the second charging interface is coupled to the first charging interface, the second charging interface applies the voltage of the third pulsating waveform to the battery.Type: GrantFiled: October 4, 2017Date of Patent: April 14, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Jialiang Zhang, Shebiao Chen, Jun Zhang, Chen Tian, Shiming Wan, Jiada Li
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Publication number: 20200106276Abstract: The present disclosure provides a device to be charged and a charging method. The device to be charged includes: a charging interface; a first charging circuit, coupled with the charging interface, configured to receive an output voltage and an output current of an adapter via the charging interface and to directly apply the output voltage and the output current of the adapter to both ends of a plurality of battery cells coupled in series in the device to be charged, so as to perform a direct charging on the plurality of battery cells. With the present disclosure, heat generated in the charging process can be reduced while ensuring the charging speed.Type: ApplicationFiled: December 3, 2019Publication date: April 2, 2020Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Jialiang ZHANG, Chen TIAN, Jun ZHANG, Shebiao CHEN, Shiming WAN, Jiada LI
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Patent number: 10608462Abstract: Provided are a charging system, a protection method and a power adapter. The charging system comprises: a battery, a first rectification unit, a switch unit, a transformer, a second rectification unit), a voltage sampling circuit, a control unit, and a comparator unit. The first rectification unit outputs the voltage with the first pulsating waveform. The switch unit outputs the modulated voltage with the first pulsating waveform. The transformer outputs the voltage with the second pulsating waveform. The second rectification unit outputs the voltage with the third pulsating waveform. The control unit adjusts a duty cycle of a control signal, such that the voltage of a third pulsation waveform meets the charging requirement of the battery. The comparator unit applies a comparison signal to the switch unit when the voltage sampling value is greater than the reference voltage value, so as to control the switch unit to forcibly open.Type: GrantFiled: July 3, 2019Date of Patent: March 31, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Publication number: 20200099216Abstract: A terminal device, a method for monitoring battery safety of a terminal device, and a system for monitoring battery safety of a terminal device are provided. The method for monitoring battery safety includes the following. Acquire status information of a battery of the terminal device. Determine whether the terminal device meets a preset safety hazard condition according to the status information. Upon determining that the terminal device meets the preset safety hazard condition, control the terminal device to be in a power-off state or disconnect a power supply circuit.Type: ApplicationFiled: April 2, 2019Publication date: March 26, 2020Inventors: Wei Chen, Zhihua HU, Hui Zhang, Jialiang Zhang, Shebiao Chen
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Publication number: 20200083739Abstract: 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 ripple 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 ripple waveforms according to the modulated first voltage, and a compositing unit configured to composite 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: ApplicationFiled: November 13, 2019Publication date: March 12, 2020Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Jialiang ZHANG, Shebiao CHEN, Jun ZHANG, Chen TIAN, Shiming WAN, Jiada LI
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Patent number: 10581264Abstract: An adapter (10) and a charging control method, the adapter (10) comprising: a power conversion unit (11), used for converting an inputted alternating current so as to obtain an output voltage and an output current of the adapter (10), the output current of the adapter (10) being an alternating current or a pulsed direct current; a voltage holding unit (12), an input end of the voltage holding unit (12) being connected to the power conversion unit (11), the voltage holding unit (12) being used for obtaining an input voltage having a pulsed waveform from the power conversion unit (11) and converting the input voltage having the pulsed waveform into a target voltage, an output end of the voltage holding unit (12) being connected to a device in the adapter (10), the target voltage being used to power the device in the adapter (10), a peak value of the target voltage being between the lowest operating voltage and the highest operating voltage of the device.Type: GrantFiled: January 7, 2017Date of Patent: March 3, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Patent number: 10581262Abstract: Methods and devices are provided for quick charging. In the method, after a mobile terminal recognizes a type of a power adapter, the mobile terminal transmits indication information to the power adapter. The indication information is configured to indicate that the mobile terminal has recognized the type of the power adapter and instruct the power adapter to activate a quick charging process. The power adapter then negotiates with the mobile terminal via the quick charging process to determine charging parameters, and charges a battery of the mobile terminal in a multi-stage constant current mode.Type: GrantFiled: January 13, 2017Date of Patent: March 3, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Patent number: 10566827Abstract: 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: GrantFiled: January 7, 2017Date of Patent: February 18, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Patent number: 10566828Abstract: An adapter, a charging control method and a charging system are provided. 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 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 unit.Type: GrantFiled: January 7, 2017Date of Patent: February 18, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Patent number: 10566814Abstract: The present disclosure provides a charging control method, a charging control device, and a power adapter. The charging control method can be performed in a power adapter configured to charge an electronic equipment through a charging cable, and includes: determining temperature of a charging interface, and controlling charging for the electronic equipment according to the temperature of the charging interface, wherein the charging interface includes at least one of the following interfaces: an interface of the power adapter used for electrical connection with the charging cable, an interface of the charging cable used for electrical connection with the power adapter, an interface of the charging cable used for electrical connection with the electronic equipment; and an interface of the electronic equipment used for electrical connection with the charging cable.Type: GrantFiled: December 7, 2016Date of Patent: February 18, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventor: Jialiang Zhang
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Patent number: 10566829Abstract: An adapter and a charging control method are provided, the adapter includes a power conversion unit, a voltage feedback unit, a current feedback unit and a power adjusting unit. An input end of the power adjusting unit is coupled to an output end of the voltage feedback unit and an output end of the current feedback unit respectively, and an output end of the power adjusting unit is coupled to the power conversion unit. The power adjusting unit is configured to receive a voltage feedback signal and a current feedback signal, and to stabilize the output voltage and the output current of the adapter when the voltage feedback signal indicates that the output voltage of the adapter reaches a predetermined target voltage or when the current feedback signal indicates that the output current of the adapter reaches a predetermined target current.Type: GrantFiled: January 7, 2017Date of Patent: February 18, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Patent number: 10559969Abstract: A charging cable includes a first interface, configured to connect to a power adapter electronically; and/or a second interface, configured to connect to an electronic equipment electronically; at least one of the first interface and the second interface comprising: a contact sheet; and a first temperature measuring component, configured to measure temperature of the contact sheet, and arranged on the same thermal conductive substrate as the contact sheet. The charging cable further includes a controller, configured to determine temperature of a charging interface and control charging for the electronic equipment according to the temperature of the charging interface, wherein the charging interface comprises at least one of the following interfaces: an interface of the power adapter used for electrical connection with the charging cable, the first interface, the second interface, and an interface of the electronic equipment used for electrical connection with the charging cable.Type: GrantFiled: August 12, 2019Date of Patent: February 11, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventor: Jialiang Zhang
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Patent number: 10554067Abstract: A power adapter, an electronic equipment, a battery charging system and a battery charging method are provided. The power adapter include a communication interface and charges via the communication interface a battery of the electronic equipment; during charging a battery, the power adapter is configured to: first charge the battery in a regular charging mode; when an output current value of the power adapter falls within a regular current range for a predefined time period, send a quick charge inquiry instruction to the electronic equipment; after receiving a quick charge command sent by the electronic equipment, adjust an output voltage according to battery voltage information fed back by the electronic equipment; and if the output voltage meets a quick charge voltage requirement predefined, adjust an output current and the output voltage according to a quick charge mode so as to charge the battery.Type: GrantFiled: May 16, 2017Date of Patent: February 4, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Jialiang Zhang, Fuchun Liao, Yuanxiang Hu, Liangcai Peng, Fengshuo Liu, Kewei Wu
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Patent number: 10541541Abstract: Embodiments of the present disclosure provide an equalization circuit, a device to be charged and a charging control method. The equalization circuit includes: a first converting unit, configured to receive a direct voltage output by a first battery cell and to convert the direct voltage output by the first battery cell into a first alternating voltage; a first resonant unit, configured to receive the first alternating voltage and to convert the first alternating voltage into a second alternating voltage in a resonant manner; a first capacitive coupling unit and a second converting unit, in which the first capacitive coupling unit is configured to couple the second alternating voltage to the second converting unit in a capacitive coupling manner, and the second converting unit is configured to convert the second alternating voltage into a first charging voltage for charging a second battery cell.Type: GrantFiled: November 8, 2017Date of Patent: January 21, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Jialiang Zhang, Shiming Wan, Chen Tian, Shebiao Chen, Jiada Li, Jun Zhang
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Patent number: 10541553Abstract: 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: GrantFiled: January 7, 2017Date of Patent: January 21, 2020Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Chen Tian, Jialiang Zhang
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Publication number: 20200021148Abstract: The present disclosure provides a wireless charging device and a wireless charging method. The wireless charging device includes a communication control module. The communication control module is configured to, when a power supply device is in a sleep state, control the power supply device to enter a wakeup state; and communicate with the power supply device in the wakeup state to determine a type of the power supply device, where the type of the power supply device includes a fast charging type and a non-fast charging type, a maximum output power of a fast charging power supply device is greater than or equal to a preset value, and a maximum output power of a non-fast charging power supply device is less than the preset value.Type: ApplicationFiled: September 26, 2019Publication date: January 16, 2020Inventors: Shangbo Lin, Shiming Wan, Jialiang Zhang
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Publication number: 20200021129Abstract: The present disclosure provides a wireless charging method, a wireless charging device, a wireless charging system and a device to be charged. The method includes: after a wireless charging device is coupled to a power supply device, the wireless charging device identifying the type of the power supply device; the wireless charging device charging a battery of a device to be charged in a target wireless charging mode according to the type of the power supply device, the target wireless charging mode being a first wireless charging mode or a second wireless charging mode, wherein a charging speed of the wireless charging device charging the battery in the first wireless charging mode is greater than a charging speed of the wireless charging device charging the battery in the second wireless charging mode.Type: ApplicationFiled: September 23, 2019Publication date: January 16, 2020Inventors: Shangbo Lin, Shiming Wan, Jialiang Zhang