A workload dependent load-sharing mechanism in a multi-battery system. The mechanism is an energy management system that operates in three modesenergy saving mode, balancer mode, and turbo mode. The energy saving mode is a normal mode where the multiple batteries provide power to their own set of loads with least resistive dissipation. In balancing mode, the batteries are connected through switches operating in active mode so that the current shared is inversely proportion to the corresponding battery state-of-charge. In turbo mode, both batteries are connected in parallel through switches (e.g., on-switches) to provide maximum power to a processor or load. A controller optimizes the sequence and charging rate for a hybrid battery to maximize both the charging current and charging speed of the battery, while enabling longer battery life. The hybrid battery comprises a fast charging battery and a high-energy density battery.

Module-based energy systems are provided having multiple converter-source modules. The converter-source modules can each include an energy source and a converter. The systems can further include control circuitry for the modules. The modules can be arranged in various ways to provide single phase AC, multi-phase AC, and/or DC outputs. Each module can be independently monitored and controlled.

Provided are a battery heating device and a control method and circuit therefor, and a power device. The battery heating device includes: a heating module including a first bridge arm, a second bridge arm, and an energy storage element; and a control module configured to control the first bridge arm and the second bridge arm, to form a circuit for discharging from a first battery cell to the energy storage element and a circuit for charging from the energy storage element and the first battery cell to a second battery cell, and/or to form a circuit for discharging from the second battery cell to the energy storage element and a circuit for charging from the energy storage element and the second battery cell to the first battery cell, for heating of the first battery cell and the second battery cell.

A battery management system includes a set of N battery modules coupled together in series, a set of N battery monitors, and a controller. Each battery monitor in the set of N battery monitors is coupled to a respective battery module in the set of N battery modules and measures a battery parameter of the respective battery module. The controller determines a preprogrammed delay for each battery monitor and provides the respective preprogrammed delay to each battery monitory. The controller transmits a synchronization command to the set of N battery monitors, which wait the respective preprogrammed delays in response to receiving the synchronization command before stopping updates to values of the respective battery parameters. The controller transmits a read command to the set of N battery monitors, which transmit read responses to the controller comprising values of the battery parameters.

The present disclosure provides a battery management system with protection and equalization functions including a dedicated battery management IC, a plurality of sampling circuits and a plurality of execution circuits. A battery protection module and an equalization module are integrated in the dedicated battery management IC. The sampling circuits and the execution circuits are coupled between the dedicated battery management IC and a lithium battery pack, respectively. The sampling circuit collects parameters including voltage, charge-discharge current and battery temperature of the lithium battery pack and inputs them into the dedicated battery management IC for analysis and processing. The dedicated battery management IC outputs control signals to the execution circuits according to a result of the analysis and processing of the parameters, to control the execution circuits to perform battery protection function and voltage equalization function of the lithium battery pack.

A method for life extension of a battery cell, provided with charge/discharge terminals to which a charging voltage can be applied with a flowing charging current, comprises: applying to terminals of the battery cell a plurality of constant voltage stages, each stage comprising intermittent voltage plateaus, letting the charging current go to zero for a rest period until an ending condition is reached, collecting data on previous discharge capacities measured during previous charge cycles, calculating a relative variation of the discharge capacity, comparing the calculated relative capacity variation to a predetermined threshold, if the calculated relative capacity variation exceeds the threshold, modifying at least one charge parameter among a selection of charge parameters including the duration of the voltage plateau, the variation of the voltage stage, and the rest time, so as to bring back the relative capacity variation below the threshold.

Proposed is a method and an apparatus for automatically detecting the number of battery packs in an ESS. According to an embodiment of the present disclosure, the method includes calculating the number of analog front-ends (AFEs) through measurement of voltage of an entire ESS, confirming the number of AFEs using serial communication with the AFEs, determining whether the number of AFEs calculated through the measurement of voltage of the entire ESS and the number of AFEs determined through the serial communication with the AFEs are the same, and when the number of AFEs calculated through the measurement of voltage of the entire ESS and the number of AFEs confirmed through the serial communication with the AFEs are the same, calculating the number of battery packs using the number of AFEs.

A method and apparatus are disclosed for a Battery Management System (BMS) for the controlling of the charging and discharging of a plurality of battery cells (12). Each battery cell has an associated plurality of control circuits (32, 36) which monitor and control the charging of individual battery cells. These units are controlled by a central microcontroller (14) which shunts current around the battery cell if fully charged and stops discharge if a battery cell is fully discharged in order to prevent damage to the other cells.

Various embodiments of the present invention are directed at a method and system for recharging batteries for wireless electronic devices. According to one embodiment, a battery charging and monitoring system is disclosed. The system includes a host machine providing a plurality of charging slots and a plurality of wireless devices coupled to and powered by a plurality of batteries. The host machine is adapted to communicate with the plurality of wireless devices through a plurality of wireless links to monitor the plurality of batteries coupled to the wireless devices. According to another embodiment, an electronic device is disclosed. The electronic device is adapted to couple with at least a rechargeable battery and to negotiate with the rechargeable battery for an agreed range of power parameters. The electronic device is further adapted to accept power from and to provide power to the rechargeable battery at the agreed range of power parameters.

The invention relates to a method for monitoring the status of a plurality of battery cells (C1-C5) in a battery pack (1), said method comprising: arranging said battery cells (C1-C5) in at least two groups (G1-G3) of cells; connecting said groups (G1-G3) of cells to a sensor unit (7b); and obtaining, by means of said sensor unit (7b), at least one sensor measurement (U.sub.1.sup.sens, U.sub.2.sup.sens, U.sub.3.sup.sens) for each group (G1-G3) which is indicative of the state of operation of said battery pack (7a). The method according to the invention further comprises: determining a cell measurement (U.sub.1.sup.cell, U.sub.2.sup.cell, . . . ) for each battery cell (C1-C5) by means of an over-determined equation system which defines said cell measurement (U.sub.1.sup.cell, U.sub.2.sup.cell, . . . ) as a function of said sensor measurement (U.sub.1.sup.sens, U.sub.2.sup.sens, U.sub.3.sup.sens); and evaluating any residual terms resulting from said equation system in order to identify any battery 1 cell having a cell measurement (U.sup.cell) which deviates from an expected value based on the remaining battery cells. The invention also relates to a battery management system (12) for monitoring the status of a plurality of connected battery cells (C1-C5) as mentioned above.