Low Power Modular Battery Management System with a Wireless Communication Interface

Abstract

The paper concerns the design and development of large electric energy storage systems made of lithium cells. Most research advances in the development of lithium-ion battery management systems focus solely on safety, functionality, and improvement of the procedures for assessing the performance of systems without considering their energy efficiency. The paper presents an alternative approach to the design and analysis of large modular battery management systems. A modular battery management system and the dedicated wireless communication system were designed to analyze and optimize energy consumption. The algorithms for assembly, reporting, management, and communication procedures described in the paper are a robust design tool for further developing large and scalable battery systems. The conducted analysis of energy efficiency for the exemplary 100S15P system shows that the energy used to power the developed battery management system is comparable to the energy dissipated due to the intrinsic self-discharge of lithium-ion cells.

Simulation of Factor on SOC Inconsistency within a Series‐Connected Lithium‐Ion Battery Pack

“…Leakage current is mainly caused by the electronic equipment of the battery monitoring system, which requires a permanent connection to the battery and contributes significantly to the discharge losses. [ 21,22 ] Considering that the individual cells in the battery pack have different leakage current levels, the leakage current of every single cell is set to be randomly and evenly distributed between 10 and 12 mA, as shown in Figure 5d. The current flowing through the battery cell can be calculated by the equation $${I}_c = I + {I}_{leak}$$, where $${I}_{leak}$$ is the leakage current of the single cell.…”

Reliable communication protocol design and simulation for wireless battery management system

“…Because of their many advantages, they are considered to be the present and future of transportation, and electric vehicles employ a BMS system for battery pack management 1 . The existing electric vehicle BMS system uses CAN bus/Daisy chain wiring harness connection 2 , with a large number of wiring harnesses and high risk for maintenance, and it is not conducive to the weight reduction of the vehicle 3 . With the enhancement of battery consistency, WBMS is in the early stage of development, which can replace traditional wired connections, lower cost, better performance, and is the future trend 4 .…”

DC Power Line Communication (PLC) on 868 MHz and 2.4 GHz Wired RF Transceivers

“…The state-of-the-art BMS technology is concentrated on power line communication (PLC) [12][13][14], wireless monitoring [15,16], and hybrid techniques combining both methods [17]. Providing a stable communication link with a local management system located in close proximity to the cell may result in faster charging for current Li-ion technology [18,19] or, alternatively, a temperature-controlled environment is required by the new fast-charging cells [20].…”