The disclosure provides a battery busbar including a conductive sheet, at least two bridge portions and at least two terminal contact portions. The conductive sheet has at least one cavity portion. Each of the at least two bridge portions has a first end and a second end which are opposite to each other, and the first ends of the bridge portions are respectively connected to different sides of the at least one cavity portion. The terminal contact portions are spaced apart from each other and are respectively connected to the second ends of the bridge portions. A width direction is defined to be substantially perpendicular to a line passing through the first end and the second end of one of the at least two bridge portions; along the width direction, a width of the bridge portion is smaller than a width of the terminal contact portion.

The energy storage system includes battery cells, a subrack, a backplane, and a battery management system BMS. The subrack reserves a plurality of battery cell slots, the battery cells are connected to the backplane through the battery cell slots. The backplane is installed in the subrack, a first power terminal is reserved at a position corresponding to the battery cell slot on the backplane, and a plug-in power terminal is formed by a second power terminal of the battery cell together with the first power terminal. A power circuit, a sampling circuit, and an equalizer circuit are integrated into the backplane, and the power circuit, the sampling circuit, and the equalizer circuit are connected after the second power terminal is plugged and docked with the first power terminal. The BMS is connected to the backplane for managing the energy storage system.

The present invention discloses a battery and an external component, which belong to the field of power supply technologies for a movie and television shooting apparatus. The battery of the present invention is used in cooperation with an external component, including at least two battery packs, a microcontroller, and a series-parallel switching circuit, and further including a connector in cooperation with the external component, the microcontroller controlling the series-parallel switching circuit according to a cooperation state of the connector and the external component, so that the battery packs are connected in series or in parallel. The present invention can be compatible with a high/low voltage camera and a high/low voltage charger automatically.

A method and system for generating inverted electrical signals includes a first string of batteries connected in series, each battery having a half-bridge circuit connected in parallel and each having upper switch and lower switches. A first H-bridge circuit is connected in parallel with the first string of batteries, and a triangle wave generator generates a plurality of triangle wave signals at a given amplitude and carrier frequency. The plurality of triangle wave signals have individual triangle wave signals phase-shifted from one another. A modulation wave generator generates a modulation signal at a modulation amplitude and at twice a fundamental frequency that is less than the carrier frequency. A controller compares an instantaneous magnitude of the individual triangle wave signals to an instantaneous magnitude of the modulation signal, and outputs commands to the upper switch of a respective half-bridge circuit based on the comparison.

A battery management system for use in charging a rechargeable battery is disclosed. The battery management system comprises a controller powered by a first power supply, at least one sensor for providing a sensor signal relating to at least one parameter of the rechargeable battery to the controller, and a data store. The controller is configured to write data to the data store based on the sensor signal. The data store is coupled to a data reader. The data reader is operable to be powered by an auxiliary power supply to read data held by the data store.

An apparatus and a method of controlling charging of a plurality of batteries connected in parallel in an electronic device are provided. The electronic device includes a charging circuit, a first battery configured to be arranged on a first electrical path connected from the charging circuit to the ground, a second battery configured to be arranged in parallel with the first battery on a second electrical path branched between the charging circuit on the first electrical path and the first battery and connected to the ground, a sensing circuit configured to identify a voltage of the second battery through a fourth electrical path branched on the second electrical path, and a processor operatively connected to the sensing circuit and the charging circuit, the charging circuit identifies a voltage of the first battery through a third electrical path branched on the first electrical path, receives a current control signal based on the voltage of the second battery through the processor, and controls a magnitude of a current supplied to the first battery or the second battery based on the current control signal.

The invention relates to a method for balancing a battery pack (5) comprising a plurality of battery cells (5a, 5b, 5c) for an electric vehicle. The method comprises: determining the state of charge (SOC) for each of said battery cells (5a, 5b, 5c); receiving information related to the expected use of the electric vehicle to a prediction horizon; and determining a state of balance value (SOB.sub.c) at the current time and an expected state of balance value (SOB.sub.p) at the end of the prediction horizon. Furthermore, the method comprises balancing the battery cells (5a, 5b, 5c) based on the state of balance value (SOB.sub.c) at the current time and the expected state of balance value (SOB.sub.p) at the end of said prediction horizon, such that the state of balance (SOB) and the use of the cell balancing process is optimized so as to minimize the energy usage of the battery pack (5). The invention also relates to an arrangement for balancing a battery pack (5).

A method for increasing temperature of a battery pack includes determining whether a temperature of a cell in the battery pack is above a lower threshold temperature. The method further includes charging, by a current directly from a charger, a balancing circuit including a resistor in proximity to the cell. The method also includes increasing the temperature of the cell in the battery pack.

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.

An apparatus coupled to an assembled battery with a plurality of serially-connected cells and for setting any one of the plurality of cells as a target cell and estimating a state of charge of the target cell includes: a cell voltage acquisition unit that acquires a measurement result of a closed circuit voltage of the target cell; a reference cell information acquisition unit that sets a reference cell with respect to the plurality of cells and acquires a closed circuit voltage and an open circuit voltage of the reference cell and a reference SOC value representing a state of charge of the reference cell; a temporary SOC operation unit that finds a temporary SOC value representing a temporary state of charge of the target cell on the basis of the closed circuit voltage of the target cell and the closed circuit voltage and the open circuit voltage of the reference cell; and an SOC operation unit that finds an SOC value representing the state of charge of the target cell by using a result of smoothing processing executed on a difference between the temporary SOC value and the reference SOC value.