Embodiments of this application provide a battery equalization method and device, and a battery management system. The method includes: obtaining a first closed circuit voltage of N cells in a duration of a pulse charge current and a second closed circuit voltage of the N cells in a duration of a pulse discharge current, where the N cells constitute a battery, and N is a positive integer; determining a relationship of SOC values between the N cells based on the first closed circuit voltage and the second closed circuit voltage; and performing charge equalization on target cells, where the target cells are determined from the N cells based on the relationship of SOC values.

A battery pack is provided that includes battery cell magazines and a battery management system to control charging and discharging of the associated battery pack. The battery cell magazines may include a magazine housing and associated battery cells. The magazine housing may define a plurality of battery cell recesses to receive the battery cells. The battery management system may be configured to balance the state of charge of a battery stack of battery packs. Methods for balancing a state of charge of battery packs of a battery stack are also provided, as are systems for lifting a battery stack.

A first power storage pack wiredly transmits identification information retained in the first power storage pack to a charging device when the first power storage pack is detached from an electric movable body. The charging device wiredly transmits the identification information received from the first power storage pack to a second power storage pack. The controller of the second power storage pack transmits via near-field communication a signal including the identification information received from the charging device. The electric movable body collates whether or not the identification information included in the received signal matches the identification information retained in the first power storage pack.

A disclosed battery management system for wireless charging includes a communication circuit and a controller. The communication circuit receives information on a first state of charge (SOC) of the first battery module, a second SOC of the second battery module, and a third SOC of the third battery module. The controller controls the first wireless charging between the first battery module and the second battery module and the second wireless charging between the second battery module and the third battery module for balancing between the first SOC, the second SOC, and the third SOC. The first wireless charging is to wirelessly transmit power from one of the first battery module and the second battery module to the other battery module. The second wireless charging is to wirelessly transmit power from one of the second battery module and the third battery module to the other battery module.

An energy storage system includes N switch units and N battery packs connected in series. The N switch units are separately connected to two ends of the N battery packs in a one-to-one correspondence. Each of the N switch units is configured to: when the energy storage system is in a charging state and remaining power of a battery pack correspondingly connected to each switch unit meets a first preset condition, and/or when the energy storage system is in a discharging state and the remaining power of the battery pack correspondingly connected to each switch unit meets a second preset condition, perform disconnection processing on the battery pack correspondingly connected to each switch unit. The first preset condition includes being greater than or equal to a first preset power value. The second preset condition includes being less than or equal to a second preset power value.

A battery charging system includes a battery removably mounted on an electric power device using electric power, a charging device configured to charge the battery using renewable power which is electric power generated from renewable energy, and a server configured to communicate with the charging device. The charging device is configured to control charging of the battery accommodated in an accommodation unit on the basis of reception information received from the server. The server is configured to compare receivable power, which is the renewable power capable of being received by the charging device, with a threshold value and configured to transmit transmission information for causing the charging device to control the charging of the battery to the charging device on the basis of a result of comparing the receivable power with the threshold value.

A mobile electric vehicle charging system may include a fuel cell configured to generate electric power required to drive a vehicle, a main battery configured to store electric power generated by the fuel cell, a bidirectional power converter configured to control electric power input to and output from the main battery, a mobile charger configured to supply electric power to charge another vehicle, and a high-voltage junction box for divergence, configured to distribute electric power generated by the fuel cell to the bidirectional power converter and the mobile charger.

A charging cabinet includes a power conversion circuit, an input interface, and a plurality of output interfaces. An input end of the power conversion circuit is connected to the input interface. The power conversion circuit converts an alternating current supplied by an alternating current power grid into a direct current, and then charges a plurality of battery packs by using the direct current.

Methods, apparatus, systems and articles of manufacture are described for a wireless battery system. An example apparatus includes at least one memory, instructions, and processor circuitry to at least one of instantiate or execute the instructions to identify a first battery node to transmit an uplink command during a first superframe interval, transmit a downlink command to the first battery node and a second battery node, the first battery node to switch in the first superframe interval from a receive state to a transmit state in response to the downlink command, the first battery node to transmit the uplink command in the transmit state, and receive the uplink command from the first battery node in the first superframe interval.

A power supply unit (PSU) configured to provide electrical power to an electronic device. The PSU may include a PSU control circuit configured to, via a power meter, detect that electrical power conveyed to the electronic device is above a timer starting threshold. In a first charging mode with a first predetermined charging duration, the PSU control circuit may control the PSU to convey electrical power to the electronic device with a first power ceiling. Subsequently to the first predetermined charging duration elapsing, in a second charging mode with a second predetermined charging duration, the PSU control circuit may control the PSU to convey electrical power to the electronic device with a second power ceiling that is lower than the first power ceiling. Subsequently to the second predetermined charging duration elapsing, the PSU control circuit may control the PSU to return to the first charging mode.