A vehicle impact detection device includes: an amplifier configured to receive and amplify an impact signal of a vehicle; a comparative voltage circuit configured to generate a first reference signal; a first comparator configured to output a control signal indicating that a predetermined first impact detection condition or a predetermined second impact detection condition is satisfied, based on an amplified signal output by the amplifier and the first reference signal; and a driver configured to cut off an output of a battery on basis of the control signal, wherein the comparative voltage circuit is configured to reduce a magnitude of the first reference signal over time in response to detection of the amplified signal output by the amplifier.

A battery control apparatus may include a power supply unit connected to a charging and discharging path of a battery, a driving unit configured to operate the power supply unit by applying a starting power to the power supply unit during a preset starting time from the charging and discharging path, a switching unit connected between the charging and discharging path of the battery and the power supply unit, and a control unit configured to turn on the switching unit in response to that a first operation power output from the power supply unit is applied, and to be driven through a second operation power generated by the power supply unit after the starting time.

The present disclosure discloses a balancing control method, apparatus, and system for a battery cluster, and belongs to the field of energy storage systems. The balancing control method for the battery cluster includes: obtaining at least one of a first actual state of charge and an actual state of health of each battery cell, and a second actual state of charge of each PACK; controlling, by a first balancing module based on the at least one of the first actual state of charge and the actual state of health, at least one of state of charge balancing and state of health balancing of each battery cell; and controlling, by a second balancing module based on the second actual state of charge, state of charge balancing of the PACK.

An external battery includes a battery cell, a charging unit configured to generate a charging current with an external power supplied from a charger to an input terminal thereof and transfer the charging current to the battery cell, a main controller unit (MCU) configured to control charging of the battery cell by the charging current, and a switch unit between the charging unit and the battery cell, wherein, when the switch unit is in an on state, the MCU changes to an active mode and allows the charging current to be transferred to the battery cell, and when the switch unit is in an off state, entering by the MCU a sleep mode and cutting off the charging current transferred to the battery cell.

A battery device includes: a main processor to monitor a voltage of a battery in a wake-up state, and perform a protection operation of a battery pack depending on a monitoring result; and a sub-processor to monitor the voltage of the battery in a sleep state of the main processor, and generate a wake-up signal for waking up the main processor when an abnormality occurs in the voltage of the battery monitored by the sub-processor. The main processor is to be woken up by the wake-up signal, monitor the voltage of the battery, determine a current status of the battery pack depending on the voltage of the battery monitored by the main processor, and perform the protection operation depending on a determination result.

Improved systems and methods for balancing a state of charge (SOC) of a plurality of batteries are disclosed. For example, a system may include multiple battery strings connected in parallel to one another through a common bus. Each battery string may include a power converter and multiple battery modules connected in series. The power converter may be configured to regulate the combined power output of the battery modules. Each battery module may include multiple relays that may be controlled to discharge, charge, and/or bypass that battery module. Collectively, the power converters of the battery strings and the relays of the battery modules may be controlled to balance the battery strings with one another and to balance the battery modules within each of the battery strings.

Systems and methods for load pre-charging may include a machine having one or more machine batteries, one or more machine loads, and a pre-charge circuit intermediary to the one or more machine batteries and the one or more machine loads. The pre-charge circuit may include a power resistor electrically coupled in series with the one or more machine batteries. The pre-charge circuit may include a plurality of arrays of positive temperature control (PTC) resistors, the plurality of arrays of PTCs resistors electrically coupled in parallel with one another, and in series between the power resistor and the one or more machine loads.

A system can include a battery pack with battery cell sections connected in series, where each of the battery cell sections includes a battery cell and a bypass switch. The system can also include a control circuit. The control circuit can determine a capacity of a particular battery cell in a particular battery cell section, determine that the capacity of the particular battery cell is less than a predefined threshold, and in response, execute a bypass sequence for the particular battery cell. The bypass sequence can involve determining a bypass period for which to bypass the particular battery cell based on the capacity of the particular battery cell, and transmitting a bypass signal to a drive circuit. The drive circuit can receive the bypass signal and responsively operate the bypass switch of the particular battery cell section to bypass the particular battery cell for the bypass period.

Energy storage systems for charging an electronic device and methods of operating the same are disclosed. The energy storage system includes an AC bus, a DC bus, a plurality of batteries, a plurality of breakers, a plurality of inverters, and a controller operatively coupled with the batteries and the breakers. The method includes calculating, by the controller, an amount of power necessary to charge the electronic device; operating, by the controller, the breakers such that the batteries of a discharging station is configured to discharge through a charging station; and charging the electronic device using the batteries.

A smart electricity safety detection system for a charging station is disclosed, including: a central processor; a first detection unit for detecting and transmitting circuit information of an internal circuit of the charging station to the central processor; a relay connected to a power supply and in signal connection with the central processor and switchable by the central processor to open-circuiting or closed-circuiting; an output port connected to an output terminal of the relay for connection with an electric vehicle; a second detection unit for detecting and transmitting output information of the output port to the central processor for monitoring and analyzing a change rate and a corresponding relationship of the circuit information and the output information, so that when the change rate or the corresponding relationship is greater than or less than a preset range, the relay is switched to open-circuiting to stop outputting a current.