Battery power system with arrayed battery power modules

Abstract

A battery power system configured by arrayed battery power modules (BPMs) is presented. Each BPM consists of a battery pack equipped with an associated bi-directional power electronic converter for charging and discharging. The number of BPMs in the array is schemed to cope with the required output voltage, current, power as well as sustainable energy. All BPMs in the configuration are mutually interactive to each other and have to be operated collaboratively with the others, but allowed to be controlled individually, facilitating the maintenance, protection, and the management of the battery power system.

A charging scenario for parallel buck-boost battery power modules with full power utilization and charge equalization

“…The power converter can be any kind of the dc-to-dc converters or inverters. With the modular design, the BPMs can be connected both in series and/or parallel to configure a battery power bank [16]. During the operation of the battery power bank, the BPMs can not only be controlled individually but also work collaboratively to meet the load requirements or sharing the charging power from the dc source.…”

A Battery Power Bank with Series-Connected Buck–Boost-Type Battery Power Modules

“…The additional BMS and charge equalization circuits bring an additional production cost and greater energy losses. Alternatively, the concept of modular battery power, whereby each cell or single-packed battery is equipped with an associated power electronic converter to be a battery power module (BPM), has been presented to cope with this issue [10]. With such a modular configuration, battery currents can be controlled individually, facilitating battery management with SOC estimation and state-of-health (SOH) evaluation.…”