Abstract: Provided are a wireless charging device, a device to-be-charged, a method for controlling charging. The wireless charging device includes a wireless transmitting circuit, a transmitting coil, and a control circuit. The transmitting coil includes multiple pairs of joints, and transmitting-coil turns defined by each pair of joints is different. The control circuit is configured to select one of the multiple pairs of joints to be electrically coupled with the wireless transmitting circuit.

Abstract: Provided are a to-be-charged device, a wireless charging device, and a wireless charging method. The to-be-charged device includes a battery, at least two wireless receiver circuits, and a control circuit. Each of the at least two wireless receiver circuits is coupled to the battery, and is configured to receive an electromagnetic signal transmitted by a wireless charging device, and convert the electromagnetic signal into a charging current for charging the battery. The control circuit is coupled with each of the at least two wireless receiver circuits, and is configured to, in various charging stages or in different charging modes, control at least one of the at least two wireless receiver circuits to charge the battery.

Abstract: A plurality of music samples and a plurality of images corresponding to the music samples may be stored in a database. The plurality of music samples may be sorted in an order of priority. Information associated with the plurality music samples may be sent to a user device. The user device may display the plurality of images corresponding to the plurality of music samples in the order of priority. The user device may receive information indicative of at least one video associated with a music sample in response to receiving user input indicative of a selection of an image among the plurality of images. The user device may display at least one sample video image corresponding to the at least one video associated with the music sample.

Abstract: The present disclosure discloses a sintered neodymium-iron-boron magnet and a preparation method thereof. The sintered neodymium-iron-boron magnet includes the following raw materials in mass percentage: 1%-40% of an iron powder or a steel powder with a magnetic induction intensity of more than 1.2 T, not more than 10% of a praseodymium-neodymium metal hydride powder, and a remainder of a neodymium-iron-boron fine powder, wherein the mass percentages of the above raw materials add up to 100%. The preparation method includes: weighing the raw materials in mass percentage; mixing the weighed raw materials uniformly, and then subjecting to magnetic-field press molding, isostatic pressing, sintering and tempering to obtain the sintered neodymium-iron-boron magnet.

Abstract: 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.

Abstract: A wireless charging device, a wireless charging method, and a device to be charged are provided. The wireless charging device includes a wireless transmission circuit, a first communication control circuit, an external interface, and a wireless data transmission circuit. The wireless charging method includes conducting, by a wireless charging device, wireless communication with a device to be charged during wireless charging to adjust transmission power of a wireless transmission circuit of the wireless charging device, to make at least one of an output voltage and an output current of a wireless reception circuit of the device to be charged match a present charging stage of a battery of the device to be charged.

Abstract: 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.

Abstract: 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.

Abstract: Terminal devices and a method for handling a charging anomaly are provided. The terminal device is configured to form a charging loop with a power adapter via power wires in a Universal Serial Bus (USB) interface of the terminal device to charge a battery of the terminal device, and the terminal device communicates with the power adapter via data wires in the USB interface. The terminal includes a processor and a non-transitory computer-readable storage medium storing instructions. The instructions are executed by the processor to cause the terminal device to determine charging parameter information of the power adapter, and protect the charging loop in response to determining that an anomaly occurs on the charging loop according to the charging parameter information, where the charging parameter information includes at least one of an output voltage of the power adapter or an output current of the power adapter.

Abstract: A wireless charging device and a device to-be-charged are provided. The wireless charging system includes a wireless charging device and a device to-be-charged. The wireless charging device is configured to charge the device to-be-charged wirelessly. The wireless charging device includes a wireless transmitting circuit and a first communication control circuit; the device to-be-charged comprises a battery, a wireless receiving circuit, a detecting circuit, and a second communication control circuit. The second communication control circuit is configured to conduct wireless communication with the first communication control circuit, to send to the first communication control circuit at least one of an output voltage and an output current of the wireless receiving circuit detected by the detecting circuit, whereby the first communication control circuit adjusts a transmission power of the wireless transmitting circuit, to meet charging requirements of the battery.

Abstract: A wireless charging device, a wireless charging method, and a device to be charged are provided. The wireless charging device includes a wireless transmission circuit, a first communication control circuit, an external interface, and a wireless data transmission circuit. The wireless charging method includes conducting, by a wireless charging device, wireless communication with a device to be charged during wireless charging to adjust transmission power of a wireless transmission circuit of the wireless charging device, to make at least one of an output voltage and an output current of a wireless reception circuit of the device to be charged match a present charging stage of a battery of the device to be charged.

Abstract: The present disclosure provides a wireless charging method, device, and system, and a device to be charged. The method includes: a wireless charging device receiving a request instruction sent by a device to be charged, the request instruction being configured to request the wireless charging device to provide a type of a power supply device to the device to be charged; the wireless charging device sending the type of power supply device identified by the wireless charging device to the device to be charged according to the request instruction. The type of power supply device including a fast charging type and a normal type, a maximum output power provided by the fast charging power supply device is greater than or equal to a preset value, and a maximum output power provided by the normal power supply device is less than the preset value.

Abstract: 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.

Abstract: A data transmission method and a sending end device are provided. The method is applied to short-range wireless communication based on a high carrier frequency. During the process of a sending end device sending data to be transmitted to a receiving end device, the method includes: after short-range wireless communication interrupted between the sending end device and the receiving end device is restored, the sending end device querying recorded transmission information, wherein the transmission information is used to indicate a data block, transmission of which is not completed, in the data to be transmitted; and the sending end device sending, to the receiving end device, the data block, transmission of which is not completed, in the data to be transmitted.

Abstract: A terminal, a power adapter, and a method for handling a charging anomaly are provided. The terminal includes a battery and a charging interface. The terminal forms a charging loop with the power adapter via the charging interface. The terminal also includes a communication unit, an anomaly detection unit, and an anomaly handling unit. The communications unit receives charging parameter information from the power adapter. The handling detection unit determines whether an anomaly occurs on the charging loop according to the charging parameter information. When the anomaly occurs on the charging loop, the anomaly handling unit controls the charging loop to enter into a protection state. Therefore, the security of the charging process is improved.

Abstract: 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.

Abstract: 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 circuit, and if the output voltage meets a quick-charging voltage condition pre-set by the charging control circuit, 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 circuit 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.

Abstract: 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.

Abstract: A mesoporous sponge spicule, a mesoporous material is synthesized on a surface of a sponge spicule to define the mesoporous sponge spicule.

Abstract: In embodiments of the present disclosure, 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.