Thermal Fault-Detection method and analysis of peripheral systems for large battery packs

Nordmann, Hannes; Frisch, M.; Sauer, Dirk Uwe

doi:10.1016/j.measurement.2017.09.031

Cited by 13 publications

(6 citation statements)

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“…In addition, several interesting approaches regarding new concepts for BMS implementations exist, like fine grained modularization and different means of communication, as in [85] or [86]. In addition, regarding robustness and failure detection, there are still new ideas emerging, see, e.g., [67]. Another aspect with rising significance might be the integration of BMS functionality into the battery cell, as, e.g., mentioned in [41,85,87].…”

Section: Discussionmentioning

confidence: 99%

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Battery Management System Hardware Concepts: An Overview

et al. 2018

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This paper focuses on the hardware aspects of battery management systems (BMS) for electric vehicle and stationary applications. The purpose is giving an overview on existing concepts in state-of-the-art systems and enabling the reader to estimate what has to be considered when designing a BMS for a given application. After a short analysis of general requirements, several possible topologies for battery packs and their consequences for the BMS' complexity are examined. Four battery packs that were taken from commercially available electric vehicles are shown as examples. Later, implementation aspects regarding measurement of needed physical variables (voltage, current, temperature, etc.) are discussed, as well as balancing issues and strategies. Finally, safety considerations and reliability aspects are investigated.

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Section: Discussionmentioning

confidence: 99%

“…In addition, sensorless temperature detection methods using indirect sensing methods, like electrochemical impedance spectroscopy [64][65][66] can be used additionally. New methods to acquire temperature along wire harnesses within complex electrical systems can also be utilized to add safety [67].…”

Section: Safety and Reliabilitymentioning

confidence: 99%

Battery Management System Hardware Concepts: An Overview

et al. 2018

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“…In recent years, battery thermal fault diagnostics have received considerable awareness as many model-based approaches [13][14][15][16][17][18][19][20] along with data-driven and signal processing techniques [21][22][23] have been proposed. The review papers [24][25][26] provide a comprehensive list of existing approaches.…”

Section: Literature Review and Research Gapsmentioning

confidence: 99%

“…There are a few works in the area of fault detection and localization in battery packs. Authors in [23] monitor the wire harnesses in battery pack to obtain thermal hot-spots and localize faults based on the change in thermal characteristics of wires. However, this approach highly depends on the the types of wires and the changes in wire's physical characteristics may be influenced by other factors as well.…”

Section: Literature Review and Research Gapsmentioning

confidence: 99%

Thermal Fault Detection and Localization Framework for Large Format Batteries

Sattarzadeh,

Roy,

Dey

2021

Preprint

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Safety against thermal failures is crucial in battery systems. Real-time thermal diagnostics can be a key enabler of such safer batteries. Thermal fault diagnostics in large format pouch or prismatic cells pose additional challenges compared to cylindrical cells. These challenges arise from the fact that the temperature distribution in large format cells is at least two-dimensional in nature (along length and breadth) while such distribution can be reasonably approximated in one dimension (along radial direction) in cylindrical cells. This difference makes the placement of temperature sensor(s) non-trivial and the design of detection algorithm challenging. In this work, we address these issues by proposing a framework that (i) optimizes the sensor locations to improve detectability and isolability of thermal faults, and (ii) designs a filtering scheme for fault detection and localization based on a two dimensional thermal model. The proposed framework is illustrated by experimental and simulation studies on a commercial battery cell.

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“…Notebook or tablet computers are powered by a Li ion battery pack [1][2][3][4]. Typically, the battery pack is composed of 2-4 Li ion battery cells.…”

Section: Introductionmentioning

confidence: 99%

Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer

Ham

Choe

2019

Energies

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This paper proposes a miniature DC-DC boost converter to drive the display panel of a notebook computer. To reduce the size of the circuit, the converter was designed to operate at a switching frequency of 1 MHz. The power conversion efficiency improved using a passive snubber circuit that consisted of one inductor, two capacitors, and two diodes; it reduced the switching losses by lowering the voltage stress of the switch and increased the voltage gain using charge pumping operations. An experimental converter was fabricated at 2.5 cm × 1 cm size using small components, and tested at input voltage 5 V ≤ VIN ≤ 17.5 V and output current 30 mA ≤ IO ≤ 150 mA. Compared to existing boost converters, the proposed converter had ~7.8% higher power conversion efficiency over the entire range of VIN and IO, only ~50% as much voltage stress of the switch and diodes, and a much lower switch temperature TSW = 49.5 °C. These results indicate that the proposed converter is a strong candidate for driving the display panel of a notebook computer.

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Thermal Fault-Detection method and analysis of peripheral systems for large battery packs

Cited by 13 publications

References 1 publication

Battery Management System Hardware Concepts: An Overview

Battery Management System Hardware Concepts: An Overview

Thermal Fault Detection and Localization Framework for Large Format Batteries

Miniature DC-DC Boost Converter for Driving Display Panel of Notebook Computer

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