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1. 发明公开

EP4120537A1 POWER SUPPLY DEVICE AND CHARGING CONTROL METHOD 审中-实审
公开(公告)号：EP4120537A1
公开(公告)日：2023-01-18
申请号：EP21767371.4
申请日：2021-03-01
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： JIANG, Senlong , ZHANG, Jun , TIAN, Chen , ZHANG, Jialiang , CHIU, Chih-wei
IPC分类号： H02M3/28 , H02J7/10
摘要： The present disclosure provides a power supply device and a charging control method. The power supply device comprises: a transformer; a first rectifier circuit, connected to a primary winding of the transformer and configured to convert a received AC voltage into a first DC voltage; a first voltage conversion module, connected to a first secondary winding of the transformer; a second voltage conversion module, connected to a second secondary winding of the transformer, wherein the first voltage conversion module and the second voltage conversion module alternatively convert the DC voltage output from the secondary side of the transformer to output DC voltages; and a control unit, separately connected to the first voltage conversion module and the second voltage conversion module and configured to control the first voltage conversion module or the second voltage conversion module to adjust the output voltage and/or output current of the power supply device. ( FIG. 3 ).

2. 发明公开

EP4120507A1 POWER SUPPLY CIRCUIT AND CHARGING DEVICE 审中-实审
公开(公告)号：EP4120507A1
公开(公告)日：2023-01-18
申请号：EP21768050.3
申请日：2021-03-01
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： JIANG, Senlong , CHIU, Chih-wei , ZHANG, Jialiang , TIAN, Chen , ZHANG, Jun
IPC分类号： H02J7/04
摘要： Provided by the present disclosure are a power supply circuit and a charging device. The power supply circuit comprises a pulse transformer circuit and a first power supply conversion circuit. The pulse transformer circuit comprises a pulse transformer and a switch control circuit; a primary winding of the pulse transformer is connected to a power supply and is connected to the switch control circuit, and the switch control circuit is used to modulate the voltage on the primary winding into a pulse voltage; and the input terminal of the first power supply conversion circuit is connected to a secondary winding of the pulse transformer, and is used to transform the voltage on the secondary winding of the pulse transformer into a first preset voltage range when the voltage outputted by the secondary winding exceeds the first preset voltage range, and then output the voltage. The disclosed power supply circuit may improve the adaptability of a charging device with different power supply sources so as to ensure the adjustable range of the output voltage.

3. 发明公开

EP4075631A1 ADAPTER AND CHARGING METHOD 审中-公开
公开(公告)号：EP4075631A1
公开(公告)日：2022-10-19
申请号：EP19955940.2
申请日：2019-12-13
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. , Powerland Technology Inc.
发明人： TIAN, Chen , JI, Feng , ZHANG, Jialiang
IPC分类号： H02J7/00 , H02J7/10 , H02M3/335 , H02M7/217
摘要： Provided are an adapter and a charging method. The adapter includes: at least one filter capacitor (210) having a capacitance smaller than a predetermined threshold and configured to filter a rectified alternating current to obtain a pulsating direct current; and a voltage transformation module (220) configured to transform the pulsating direct current to obtain a voltage and a current for charging a device to be charged. The adapter for charging a battery is provided, the volume of the adapter can be reduced and the miniaturization of the volume of the adapter can be realized.

4. 发明公开

EP4075404A1 CONTROL CIRCUIT AND CONTROL METHOD FOR SWITCH TRANSISTOR 审中-公开
公开(公告)号：EP4075404A1
公开(公告)日：2022-10-19
申请号：EP20912207.6
申请日：2020-01-07
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： TIAN, Chen , ZHANG, Jialiang
IPC分类号： G08C17/00
摘要： Provided are a control circuit and a control method for a switch transistor. The control circuit includes: a control unit (210) configured to output a control signal; and a microwave unit (220) having a transmitting terminal connected to the control unit (210) and a receiving terminal connected to at least one switch transistor (230). The transmitting terminal is configured to receive the control signal and convert the control signal into a microwave signal. The receiving terminal is configured to convert the microwave signal into the control signal to control turn-on or turn-off of the at least one switch transistor (230). The control circuit may turn on or turn off the switch transistor quickly without causing crosstalk in the circuit, even if dead time of the control signal is short. In addition, since transmission of microwaves does not rely on any medium, a distance between the transmitting terminal and the receiving terminal of the microwave unit can be relatively long, thereby avoiding the crosstalk in the circuit, and preventing the switch transistor from being wrongly turned on.

5. 发明公开

EP3972079A1 DRIVING CIRCUIT, ELECTRONIC DEVICE, AND CONTROLLED CHARGING METHOD 审中-公开
公开(公告)号：EP3972079A1
公开(公告)日：2022-03-23
申请号：EP20827510.7
申请日：2020-05-27
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： LIU, Shaobin , TIAN, Chen , BU, Changjun , ZHANG, Jun
IPC分类号： H02J7/04
摘要： A driving circuit (380), an electronic device (1800), and a controlling charging method (1900), comprising: a first interface (610), used for receiving a direct-current signal inputted by an external power supply device; a second interface (620), used for receiving at least two pulse-width modulation (PWM) signals; and a processing circuit (630), used for overlaying and rectifying the direct-current signal and the at least two PWM signals so as to acquire a first direct-current signal, and outputting the first direct-current signal to a gate electrode of an MOS transistor. The driving circuit is capable of increasing a driving voltage generated by the driving circuit, thus increasing the voltage between a gate electrode and a source electrode between MOS transistors, thus preventing the voltage of a VGS from dropping too low resulting in reduced charging efficiency, a reduced fast-charging current or quitting a fast-charging mode.

6. 发明公开

EP3968491A1 CHARGING CIRCUIT, CHARGING CHIP, MOBILE TERMINAL, AND CHARGING SYSTEM 无效
公开(公告)号：EP3968491A1
公开(公告)日：2022-03-16
申请号：EP20826619.7
申请日：2020-05-28
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： LIU, Shaobin , TIAN, Chen
IPC分类号： H02J7/00
摘要： The present disclosure relates to a charging circuit, a charging chip, a mobile terminal, and a charging system. The charging circuit includes a first transistor, a second transistor, and a control circuit. The first transistor has a control electrode connected to a predetermined voltage terminal, a first electrode connected to an energy storage device of an apparatus to be charged, and a second electrode connected to a second electrode of the second transistor. A control electrode of the second transistor is connected to the control circuit. A first electrode of the second transistor is connected to a power supply device. The control circuit is configured to control a working state of the second transistor. When at least one of the first transistor and the second transistor is in a turn-off state, a difference between a voltage of the predetermined voltage terminal and a maximum value of the energy storage device when the energy storage device is fully charged is smaller than a predetermined threshold. Through embodiments of the present disclosure, it is possible to avoid the occurrence of electromigration in the two transistors when charging is not performed, thereby avoiding the problem of serious heat generation in the charging circuit during charging.

7. 发明公开

EP3930141A1 QUICK CHARGING METHOD, MOBILE TERMINAL, AND POWER ADAPTER 审中-实审
公开(公告)号：EP3930141A1
公开(公告)日：2021-12-29
申请号：EP21188892.0
申请日：2016-01-05
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： TIAN, Chen , ZHANG, Jialiang
IPC分类号： H02J7/04 , H02J7/00 , H04M19/08
摘要： 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. Thus, safety of a quick charging process can be ensured.

8. 发明公开

EP3719951A1 CHARGING METHOD, TERMINAL AND COMPUTER STORAGE MEDIUM 有权
公开(公告)号：EP3719951A1
公开(公告)日：2020-10-07
申请号：EP18936296.5
申请日：2018-10-12
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： TIAN, Chen
IPC分类号： H02J7/00
摘要： Embodiments of the present disclosure disclose a charging method, a terminal and a computer storage medium. The charging method includes: detecting a battery power and a power consumption parameter before turning on a fast charging function; determining an estimated charging time according to the battery power and the power consumption parameter; determining whether an abnormal charging occurs according to the estimated charging time after turning on the fast charging function; and turning off the fast charging function in response to determining that the abnormal charging occurs.

9. 发明公开

EP3657660A1 POWER SUPPLY CIRCUIT, POWER SUPPLY DEVICE, AND CONTROL METHOD 有权
公开(公告)号：EP3657660A1
公开(公告)日：2020-05-27
申请号：EP17925647.4
申请日：2017-09-22
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： TIAN, Chen , ZHANG, Jialiang
IPC分类号： H02M7/00 , H02H9/00 , H05B37/02
摘要： Provided are a power supply circuit, a power supply device and a control method. The power supply circuit includes a primary rectifier unit, a modulation unit, a transformer, a secondary rectifier and filtering unit, a current feedback unit, and a control unit. The power supply circuit removes a liquid electrolytic capacitor at a primary side. In the power supply circuit, the liquid electrolytic capacitor at the primary side is removed, such that a volume of the power supply circuit is smaller, and is safe to use. Moreover, the control unit may determine a type of a voltage of input alternating current, and set a current limit value in the current feedback unit according to the type of the voltage of the alternating current, such that it is flexible to use the power supply circuit.

10. 发明授权

EP3322065B1 CHARGING SYSTEM, CHARGING METHOD, AND POWER ADAPTER FOR TERMINAL 有权转让
公开(公告)号：EP3322065B1
公开(公告)日：2020-04-08
申请号：EP16889012.7
申请日：2016-07-26
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： ZHANG, Jialiang , ZHANG, Jun , TIAN, Chen , CHEN, Shebiao , LI, Jiada , WAN, Shiming
IPC分类号： H02J7/00 , H02J7/02 , H02J7/04 , H02M3/335

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