Direct measurement of current distribution in lithium-ion cells by magnetic field imaging

Brauchle, Felix; Grimsmann, Florian; Kessel, Otto von; Birke, Kai Peter

doi:10.1016/j.jpowsour.2021.230292

Cited by 22 publications

(22 citation statements)

References 24 publications

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“…Thus, the current distribution can be visualized by measuring the battery-induced magnetic field, and the batteries with bidirectional or unidirectional tabs coincide uniformly with the simulation results. [49] Magnetic sensor analysis of the magnetic field and current distribution can be applied to detect defects in a pack containing several batteries, beyond the simple detection of imbalances and defects in a single battery. For instance, Wu et al visualized the magnetic fields of a battery pack and detected an imbalance in the capacity across the batteries in the pack (Figure 12c).…”

Section: Magnetic Field Imaging (Mfi) Of Li-ion Pouch Cellsmentioning

confidence: 99%

“…This poses substantial limitations on data extraction concerning charge transfer in the direction of the battery depth. [49] Therefore, it is forecasted that improvements in 3D imaging analysis and the incorporation of charge Figure 12. a) i) Scheme of the experimental arrangement for measuring magnetic field.…”

Section: Magnetic Field Imaging (Mfi) Of Li-ion Pouch Cellsmentioning

confidence: 99%

“…[47,48] Recently, a novel technology has been proposed that uses a magnetic field induced by an applied current was developed to visualize the current distribution pattern. [49] In this review, various imaging tools suitable for each scale (from active material particles to battery systems) are introduced, and their case studies and recently identified phenomena are discussed. In the field of medical radiology, spatial mapping of the human body down through its hierarchy, from entire organs to their individual functional units and constituent cells, can provide a comprehensive picture of the structural information and precise details of the entire intact human body, aiding in the diagnosis and treatment of diseases and injuries.…”

Section: Introductionmentioning

confidence: 99%

“…[ 47,48 ] Recently, a novel technology has been proposed that uses a magnetic field induced by an applied current was developed to visualize the current distribution pattern. [ 49 ]…”

Section: Introductionmentioning

confidence: 99%

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Multiscale Imaging Techniques for Real‐Time, Noninvasive Diagnosis of Li‐Ion Battery Failures

Lee,

Shin

et al. 2023

Small Science

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With the increasing popularity of battery‐powered mobility, ensuring the safety and reliability of Li‐ion batteries (LIBs) has become critical for manufacturers. Despite advanced manufacturing processes for large‐scale Li‐ion cells, “latent defects” still unintentionally appear, due to imbalanced battery design, invisible faults, and extreme operating conditions. These defects cause performance degradation and can even lead to battery fires. Hence, early detection of latent defects, along with understanding the influence of cell parameters and operating conditions on battery failure scenarios, is crucial. For straightforward investigations and interpretations, noninvasive and in operando battery imaging techniques and methods have been proposed using X‐rays, neutrons, and ultrasound, as these can penetrate active and component materials and cell packaging. Moreover, magnetic‐field‐guided visualization of the current distribution pattern in cells under a current load has been proposed to identify invisible defects. This review thoroughly examines various imaging techniques for internal batteries, from the atomic and molecular levels in electrode materials and interfaces to macroscale battery systems. By assessing qualitative case studies and newly discovered phenomena, this review provides valuable insights into state‐of‐the‐art noninvasive battery imaging and its potential to improve the safety and reliability of LIB technology.

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Section: Magnetic Field Imaging (Mfi) Of Li-ion Pouch Cellsmentioning

confidence: 99%

Section: Magnetic Field Imaging (Mfi) Of Li-ion Pouch Cellsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…[ 47,48 ] Recently, a novel technology has been proposed that uses a magnetic field induced by an applied current was developed to visualize the current distribution pattern. [ 49 ]…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multiscale Imaging Techniques for Real‐Time, Noninvasive Diagnosis of Li‐Ion Battery Failures

Lee,

Shin

et al. 2023

Small Science

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“…the Magnetoresistive sensor is manufactured by thin-film technology, which allows them to be highly integrated. Brauchle et al reported an anisotropic magnetoresistive (AMR) sensor to map the magnetic field and achieve the detection of 227 mA⋅cm −2 current density [ 14 ]. The TMR sensor also plays an important role in battery magnetic imaging.…”

Section: Introductionmentioning

confidence: 99%

Power Batteries Health Monitoring: A Magnetic Imaging Method Based on Magnetoelectric Sensors

et al. 2022

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With the popularity of electric vehicles, the ever-increasing demand for high-capacity batteries highlights the need for monitoring the health status of batteries. In this article, we proposed a magnetic imaging technique (MIT) to investigate the health status of power batteries nondestructively. This technique is based on a magnetic sensor array, which consists of a 16-channel high-performance magnetoelectric sensor, and the noise equivalent magnetic induction (NEB) of each channel reaches 3–5 pT/Hz1/2@10 Hz. The distribution of the magnetic field is imaged by scanning the magnetic field variation of different positions on the surface. Therefore, the areas of magnetic anomalies are identified by distinguishing different magnetic field abnormal results. and it may be possible to classify the battery failure, so as to put forward suggestions on the use of the battery. This magnetic imaging method expands the application field of this high-performance magnetoelectric sensor and contributes to the battery’s safety monitoring. Meanwhile, it may also act as an important role in other nondestructive testing fields.

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Non‐Destructive, Spatially Resolved, Contactless Current Measurement

Kaufmann,

Band,

Lausch

2024

Photovoltaic Solar Energy

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Direct measurement of current distribution in lithium-ion cells by magnetic field imaging

Cited by 22 publications

References 24 publications

Multiscale Imaging Techniques for Real‐Time, Noninvasive Diagnosis of Li‐Ion Battery Failures

Multiscale Imaging Techniques for Real‐Time, Noninvasive Diagnosis of Li‐Ion Battery Failures

Power Batteries Health Monitoring: A Magnetic Imaging Method Based on Magnetoelectric Sensors

Non‐Destructive, Spatially Resolved, Contactless Current Measurement

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