Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Shebiao Chen

Jialiang Zhang

Chen Tian

Shiming Wan

Jiada Li

Jun Zhang

Wei Chen

Wei Feng Chen

Tao Wang

Zhihua Hu

Shangbo Lin

Hongbin Xie

Bo Yang

Yong Sun

Hui Zhang

The present disclosure discloses a method for charging and discharging control, and a device. The method can be applied to a device. The device includes a first battery unit and a second battery unit which are connected in series, and a balance module. The second battery unit supplies power for the device. The method includes, when the voltage of the second battery unit is equal to or less than a first preset voltage threshold, transferring the power in the first battery unit to the second battery unit through the balance module, such that the voltage of the second battery unit is greater than the first voltage threshold.

Charging and discharging control method, and device

A wireless power reception apparatus includes a coil, a first rectifying unit, a second rectifying unit, and a charging unit. The coil includes a first end, a second end, and a tap. The coil defined by the first end and the second end is configured to provide a first voltage. The coil defined by the first end and the tap provides a second voltage. The first rectifying unit is coupled with the first end and the second end of the coil, and has a working voltage which matches a first voltage to adapt to a first wireless charging mode. The second rectifying unit is coupled with the first end and the tap of the coil, and has a working voltage which matches a second voltage to adapt to a second wireless charging mode. The charging unit is configured to select the first or second rectifying unit to charge the battery.

Wireless power reception apparatus and mobile terminal

A charging control apparatus, a device to be charged, and a charging control method are provided. The charging control apparatus includes: a first charging channel configured to charge a plurality of cells coupled in series according to a charging signal provided by a first-type power supply device; a second charging channel configured to charge a part of the cells in the plurality of cells according to a charging signal provided by a second-type power supply device; and an equalizing circuit configured to equalize a voltage of the plurality of cells during an operating process of the second charging channel.

Charging control apparatuses, devices to be charged, and charging control methods

A terminal and a device are provided. The terminal includes a charging interface and a first charging circuit. The first charging circuit is coupled with the charging interface, and is configured to receive an output voltage from the adapter via the charging interface and apply the output voltage to both ends of multiple cells connected in series in the terminal to charge the multiple cells.

Terminal with charging circuit and device thereof

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.

Terminal device and method and system for monitoring battery safety in terminal device

Battery management circuits include a first charging channel, a Cuk circuit, and a communication control circuit. A battery is charged through the first charging channel based on charging voltage and/or charging current provided by a power supply device. The battery includes a first cell and a second cell coupled in series. The communication control circuit is configured to communicate with the power supply device, to make magnitude of the charging voltage and/or charging current provided by the power supply device match a present charging stage of the battery, and the communication control circuit is further configured to send a drive signal to the Cuk circuit to drive the Cuk circuit to work, to make energy of the first cell and the second cell be transferred through the Cuk circuit to balance voltage of the first cell and voltage of the second cell.

Battery management circuit, device to be charged, and power management method

Provided is a device to be charged. The device includes: a battery supply circuit, including first and second cells configured to switch between being coupled in parallel with each other and being coupled in series with each other; a charging interface, through which the device receives output voltage and current of an adapter; a first charging circuit coupled between the charging interface and the battery supply circuit, and configured to convert the output voltage and apply the converted output voltage on both ends of the first and second cells coupled in parallel; and a second charging circuit coupled between the charging interface and the battery supply circuit, and configured to directly apply the output voltage and current on both ends of the first and second cells coupled in series, or directly apply the output voltage and current on both ends of the first and second cells coupled in parallel.

Devices to be charged and charging control methods

A device to be charged, a charging method, and a charging control circuit are provided. The device to be charged includes multiple cells coupled in series, a conversion circuit, a first charging channel, a second charging channel, and a communication control circuit. The conversion circuit is configured to receive input voltage from a power supply device, convert the input voltage into charging voltage for the multiple cells and into power supply voltage for a system of the device to be charged, charge the multiple cells according to the charging voltage, and supply power to the system of the device to be charged according to the power supply voltage.

Device to be charged with multiple charging channels, charging method, and charging control circuit with multiple charging channels

A wireless power reception apparatus and a mobile terminal are provided. The wireless power reception apparatus includes the following. A coil includes a first end, a second end, and a tap. The coil defined by the first end and the second end is configured to provide a first voltage, and the coil defined by the first end and the tap is configured to provide a second voltage. A first rectifying unit coupled with the first end and the second end of the coil. A second rectifying unit coupled with the first end and the tap of the coil. A charging unit coupled with the first rectifying unit and configured to apply the first voltage to a battery for charging. A power supply unit coupled with the second rectifying unit and configured to apply the second voltage to power a wireless receiving chip.

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.

Terminal device, method for monitoring battery safety of terminal device

A device and a method for charging control, and an electronic device are provided. The device includes an interface module configured to be connected to an external charging device; a battery unit including a plurality of battery cells connected in series; a controller connected to the interface module, and configured to identify a charging mode of the external charging device and send a control instruction correspondingly according to the charging mode; a charging circuit connected to the controller and the battery unit and configured to receive the control instruction, so as to charge the battery unit according to a charging signal output by the external charging device; and a voltage dividing circuit connected in series with the battery unit, and configured to divide an output voltage of the battery unit to obtain a power supply voltage suitable for powering the electronic device.

Device and method for charging control, electronic device

Embodiments of the present disclosure provide a charging method for multiple cells. The method includes: converting a received charging voltage to obtain a converted charging voltage; and charging multiple cells connected in series with the converted charging voltage. The technical solution according to embodiments of the present disclosure reduces the charging current and the heat generated by a terminal during the charging process. Meanwhile, when the charging current remains the same, the charging voltage is increased, achieving fast charging.

Charging method and apparatus for multiple cells, and electronic device

The present disclosure provides a battery supply circuit, a device to be charged, and a charging control method. The battery supply circuit includes a first cell, a second cell, a switch, a first switching unit and a second switching unit. A first end of the second cell is coupled to a first end of the second switching unit, and a second end of the second cell is coupled to a first end of the switch, a second end of the second switching unit is coupled to a second end of the switch; a first end of the first cell is coupled to the second end of the switch, a second end of the first cell is coupled to a first end of the first switching unit, and a second end of the first switching unit is coupled to the first end of the switch.

Battery supply circuits, devices to be charged, and charging control methods

A device to be charged, a charging method, and a charging control circuit are provided. The device to be charged includes multiple cells coupled in series and a conversion circuit. The conversion circuit is configured to receive input voltage from a power supply device, convert the input voltage into charging voltage for the multiple cells and into power supply voltage for a system of the device to be charged, charge the multiple cells according to the charging voltage, and supply power to the system of the device to be charged according to the power supply voltage.

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Dongguan, China

Shebiao Chen