A battery pack includes a housing, a plurality of rechargeable battery cells, a connection interface, a near-field communication (NFC) reader, a battery management system, and a communication gateway. The connection interface is in communication includes a plurality of data pins, a positive terminal, and a negative terminal. The battery management system is in communication with the NFC reader and is configured to receive information from the NFC reader including an NFC tag identification, then retrieve stored parameters corresponding to the NFC tag identification, and configure at least one of the plurality of data pins based upon the stored parameters corresponding to the NFC tag identification.

The present disclosure provides a method and apparatus for controlling a voltage of an electric machine, applied to a vehicle having an electricity-generation-starting-up integrated electric machine, which relates to the technical field of vehicle controlling. The method includes: when the vehicle is in a voltage-controlling mode, acquiring a current battery voltage, a current battery electric current and an electric-current limit value of the vehicle; according to the battery voltage, determining an initial target voltage; according to a difference between the electric-current limit value and the battery electric current, determining a superposing-voltage value; based on the superposing-voltage value and the initial target voltage, determining a target controlling voltage; and based on the target controlling voltage, controlling the battery voltage of the vehicle.

An electronic device is provided. The electronic device includes a charging circuit, a battery, and a processor operatively connected to the charging circuit and the battery, wherein the processor is configured to charge the battery with a first voltage corresponding to a first charging level, identify the number of times that supplementary charging is performed after the electronic device is detected to be in a fully-charged state, when the number of times that the supplementary charging is performed exceeds a specified number of times, configure a charging level for charging the battery to a second charging level configured to be lower than the first voltage of the first charging level, and adjust a voltage received from a power transmission device through the charging circuit to a second voltage corresponding to the second charging level and charge the battery with the adjusted second voltage.

A remote computer server communicates with a fleet of electric vehicles, and gathers telemetry data from the fleet of electric vehicles. An intelligent EVSE unit and/or a DC fast charging unit communicates with the remote server, and charges an electric vehicle based at least in part on the telemetry data from the fleet of electric vehicles. The remote computer server can generate charging instructions based at least in part on the telemetry data gathered from the fleet of electric vehicles. The intelligent EVSE unit and/or the DC fast charging unit receive the charging instructions, and charge the electric vehicle based at least in part on the charging instructions, the telemetry data, and/or an existent electrical load associated with an electrical panel of a house or a building.

According to an embodiment, a wireless power transmitting device may include a transmission coil, a power providing circuit, and at least one controller. The at least one controller may be configured to control the power providing circuit to apply first power to the transmission coil, identify a resonant frequency, based on a voltage measured at the transmission coil in response to the first power applied to the transmission coil, based on a difference between the identified resonant frequency and a reference frequency meeting a designated condition, identify that a foreign object is placed on a charging area of the wireless power transmitting device, and based on the difference between the identified resonant frequency and the reference frequency failing to meet the designated condition, control the power providing circuit to apply, to the transmission coil, at least one second power for performing communication with a wireless power receiving device.

A server includes a communication device and a processor. The communication device obtains a power rate unit price dependent on a region where external charging is performed and a time slot when external charging is performed. The processor calculates a first power rate indicating a power rate when the external charging is performed with a first power feeding facility provided at a departure place before departure of a vehicle, calculates a second power rate indicating a power rate when the external charging is performed with a second power feeding facility provided in the vicinity of a traveling route after departure of the vehicle, and when the second power rate is lower than the first power rate, reduces an amount of power feeding during the external charging with the first power feeding facility, as compared with when the second power rate is equal to or higher than the first power rate.

The invention relates to a battery cell unit (10) which comprises a rechargeable electrochemical battery cell (11), a monitoring-and-control unit (12) connected in parallel to said battery cell (11), and a coupling unit in the form of a half bridge (14) comprising a first power semi-conductor (15) and a second power semi-conductor (16). Said battery cell unit (10) is equipped with an integrated circuit (20) that has a noise source (21). A switch-on delay can be achieved by means of said noise source (21). The invention also relates to a switching method for a battery system which comprises a plurality of intrinsically-safe battery cell units (10).

The present disclosure relates to an electronic apparatus, a display panel, and an electronic device. The apparatus comprises: a photoelectric sensing module comprising a plurality of sensing units, the sensing units being used for converting optical signals into electrical signals, and the photoelectric sensing module being used for acquiring brightness information during fingerprint recognition; and a power management module electrically connected to the photoelectric sensing module and used for, when the state of the photoelectric sensing module satisfies a preset condition, charging a battery by using the electrical signals output by the plurality of sensing units. According to embodiments of the present disclosure, when the state of the photoelectric sensing module satisfies the preset condition, the apparatus can use the electric signals output by the plurality of sensing units to charge the battery, thereby prolonging the battery life.

A dual-battery charging and discharging method is described to be used for a dual-screen terminal. The method includes: obtaining a state identifier of the first display screen and a state identifier of the second display screen; determining whether the dual-screen terminal is in a charging state; in response to determining that the dual-screen terminal is in a charging state, controlling the first battery and the second battery to be charged according to the state identifier of the first display screen and the state identifier of the second display screen; and in response to determining that the dual-screen terminal is not in a charging state, controlling whether the first battery and the second battery supply power to the dual-screen terminal according to the state identifier of the first display screen and the state identifier of the second display screen.

This application relates to the field of battery technologies and discloses a method and an apparatus for battery energy recovery, a battery management system, and a battery. The method includes: sending a charge/discharge instruction to a battery pack, so that the battery pack alternately outputs a charge signal and a discharge signal according to the charge signal when a vehicle is traveling; and performing battery energy recovery for the vehicle according to the charge signal. In the method and the apparatus for battery energy recovery, the battery management system, and the battery in this application, the charge signal and the discharge signal are alternately output so as to perform battery energy recovery under a condition corresponding to the charge instruction. In this way, endurance mileage of the vehicle is effectively increased and degradation speed of the battery is reduced.