A power storage management device includes: a voltage detection unit; a current detection unit; and a voltage equalization circuit that includes a plurality of transformers including a first winding connected in parallel with each of the power storage elements and a second winding connected in parallel with the power storage unit and the current detection unit, a plurality of switch units including at least one of a first switch connected in series to the first winding and a second switch connected in series to the second winding. When a first abnormality determination condition is satisfied, a process corresponding to an abnormality detection of the current detection unit is performed, the first abnormality determination condition including the necessary condition that a detection result of the current detection unit caused by the on/off operation of the switch units corresponding to the target power storage elements is outside a normal current range.

A storage battery management device for managing an assembly of series connected storage batteries having SOC-OCV characteristics including a plateau region includes: a voltage equalization circuit that performs constant current control to reduce the voltage difference of each storage battery by transferring electric charge among the storage batteries; a coulomb counting processing unit that calculates the capacity of each storage battery; a target voltage calculation unit that sets a target voltage for each storage battery based on the average voltage and the internal resistance; and a voltage equalization control unit that controls the voltage equalization circuit to cause the voltage equalization circuit to perform the constant current control. If the average voltage is within the plateau region, the voltage equalization control unit continues constant current control when the capacity difference is a first capacity difference, and stops constant current control when the capacity difference reaches a second capacity difference.

A flexible energy storing cable contains a plurality of individual supercapacitors and their respective balancing circuits, along with a single control circuit to manage all of the individual balancing circuits through a data link, which may be wired within the cable or may be wireless. The cable is preferably flexible enough to bend around a radius of about five times its diameter or less. The system may contain further modules such an AC/DC converter, DC/DC converter, DC/AC converter, source control, etc., which may be external to the cable or integrated within the cable if size permits. A supercapacitor management system and/or a hybrid energy storage isolation system may be integrated in-line into the energy storing cable.

The present application relates to a system and method for vehicle battery management, a storage medium, and a server system. The system for vehicle battery management includes: a communications subsystem configured to receive battery signal data in a distributed message queue; a metadata management subsystem configured to store battery information; and a distributed processing subsystem configured to parse the battery signal data based on the battery information, to obtain parsed data and alarm data. In this way, centralized battery management can be implemented, thereby overcoming disadvantages in terms of alarms/warnings generated by the batteries themselves.

Systems and methods are provided for state-of-charge balancing in battery management systems for Si/Li batteries. State-of-charge (SOC) of one or more lithium-ion cells may be assessed, and based on the assessing of the SOC, the one or more lithium-ion cells may be controlled. The controlling may include setting or modifying one or more operating parameters of at least one lithium-ion cell, and the controlling may be configured to equilibrate the SOC of the one or more lithium-ion cells or to modify an SOC of at least one lithium-ion cell so that the one or more lithium-ion cells have a balanced SOC.

One or more of the present embodiments provide for a battery cell balancing system and strategy that delivers more efficient use of battery capacities as needed for different use cases. For example, a balancing circuit is provided to support targeted battery cell passive and active balancing according to a balancing strategy for the use cases. Further the balancing circuit allows for cell balancing to be performed while the battery cells are collectively being charged or discharged.

A battery management system includes a battery monitor, a balancer and a control circuit to control the balancer. The control circuit determines a first voltage value indicating a no-load voltage of each battery, compensates the first voltage value of each battery using a balancing capacity of each battery by a balancing operation for a latest reference time, determines a voltage deviation or a difference between the compensated first voltage value of each battery and a reference voltage value, and detects an internal short circuit fault in each battery by comparing a change amount of the voltage deviation of each battery for the reference time with a threshold.

Provided are a circuit control method, a battery controller, a battery management system, a battery, an electrical apparatus, and a vehicle. The circuit control method includes: acquiring an apparatus wake-up signal; determining whether a power source terminal voltage of a charging circuit of a battery on the apparatus is greater than a first threshold and whether a change rate in a first time length is less than a second threshold, wherein the charging circuit is a circuit connecting the battery on the apparatus and a generator, and the power source terminal voltage is an output voltage of the generator; and issuing a first instruction when the power source terminal voltage of the charging circuit of the battery on the apparatus is greater than the first threshold and the change rate in the first time length is less than the second threshold, so that the charging circuit is turned on.

A method for operating an energy supply system having a stationary battery storage device includes operating the energy supply system and recording a chronological profile of an energy flow from the battery storage device and providing data points respectively indicative of a low-load duration and a timepoint within a period, wherein the low-load duration is indicative of a duration during which the amount of energy flow into or out of the battery storage device falls below a specified threshold. The method includes creating or further developing a data-based model based on the data points provided, wherein the data-based model is designed to determine at least one most likely timepoint within the period at which a balancing method can be performed without premature termination, and performing the balancing method at the at least one most likely timepoint.

A battery management system may include a plurality of balancing resistors respectively forming balancing discharging paths of cells connected in series to each other, a plurality of balancing switches respectively connected between the cells and the balancing resistors, and configured to control cell-balancing of each of the cells, a voltage-detecting circuit for detecting respective cell voltages of the cells, and a battery controller for acquiring respective balancing capacities of the cells based on the cell voltages, for obtaining duty cycles of the balancing switches according to the balancing capacities, and for scaling the duty cycles of the balancing switches according to a sum of duty cycles of two adjacent cells from among the cells.