To investigate the boundaries of CT, defects such as a partial and complete removal of the coating, a cut, or a kink, as well as particle contaminations of various sizes and materials (aluminium, copper, iron) were …
Premature battery drain, swelling and fires/explosions in lithium-ion batteries have caused wide-scale customer concerns, product recalls, and huge financial losses in a wide range of products including smartphones, laptops, e-cigarettes, hoverboards, cars, and commercial aircraft.
Lithium-ion batteries (LIBs) are widely used in electric vehicles and energy-storage power stations owing to their advantages in terms of high energy density and long cycle life [ , , , ]. However, manufacturing defects seriously affect the safety and durability of LIBs [ 5, 6 ].
According to the defect size and position, the capacity loss could be 1 to 10 2 mA h and the leakage current could be 5–50 mA. Results remove the barriers for defective battery safety risk evaluation, enabling identification, monitoring, and early warning of minor damaged batteries.
Lithium-ion batteries inevitably suffer minor damage or defects caused by external mechanical abusive loading, e.g., penetration, deformation, and scratch without triggering a hard/major short circuit. The replacement of cells becomes a dilemma if the safety risk of the defective batteries remains unknown.
In principle, destructive and non-destructive analysis methods can be used to detect defects in batteries, although only the latter are reasonable in the production environment of the value chain as they do not degrade battery performance [35].
In particular, we identify different impurity particles in the composite cathode and reveal their roles in the battery functionality. Our data suggest that the defect particles in the LIB cathode could affect the local chemistry directly through engaging in the redox reactions or indirectly through affecting the particles’ self-assembling process.
To investigate the boundaries of CT, defects such as a partial and complete removal of the coating, a cut, or a kink, as well as particle contaminations of various sizes and materials (aluminium, copper, iron) were …
We identify and recover the defective regions from the cell and conduct a comprehensive investigation from the chemical, structural, and morphological perspectives. Our results reveal how the structural defects affect the cell performance, which is highly important to industry-scale battery production.
2.1 Electrode manufacturing. Large lithium-ion batteries, for example in the context of electromobility applications, typically consist of one or more battery packs that contain multiple battery cells. Such automotive cells currently have a variety of different geometries and require their power to be precisely regulated (load distribution, thermal evolution). 13 The most …
The manufacturing of commercial lithium-ion batteries (LIBs) involves a number of sophisticated production processes. Various cell defects can be induced, and, depending on their structural...
Characterisation of Manufacturing Defects in Anode, Cathode and Separator of Lithium-ion Batteries PRATHIBHA VADAKKEMURIYIL PRASANNEN . Stockholm, Sweden, 2023. ii. Author. Prathibha Vadakkemuriyil Prasannen Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm, Sweden. Project Location. Northvolt Labs A Västerås, …
This paper addresses the safety risks posed by manufacturing defects in lithium-ion batteries, analyzes their classification and associated hazards, and reviews the research on metal foreign matter defects, with a focus on copper particle contamination. Furthermore, we …
Cathodic metal-contaminant defects are frequently introduced into lithium-ion batteries (LIBs) during production. The life-cycle evolution and influence mechanisms of …
Severe inhomogeneities (defects), such as metal particle contamination, significantly impact the cell''s performance. Besides electrical measurements, image-based measurement methods can be...
This paper provides a review of applications of CT scans in lithium-ion battery failure analysis and demonstrate, the application of CT scans for detecting manufacturing …
This study conducts a design and process failure mode and effect analysis (DFMEA and PFMEA) for the design and manufacturing of cylindrical lithium-ion batteries, with a focus on battery...
We identify and recover the defective regions from the cell and conduct a comprehensive investigation from the chemical, structural, and morphological perspectives. …
Surface defects of lithium batteries seriously affect the product quality and may lead to safety risks. In order to accurately identify the surface defects of lithium battery, a novel defect detection approach is proposed based on improved K-nearest neighbor (KNN) and Euclidean clustering segmentation. Firstly, an improved voxel density strategy for KNN is …
Understanding the effect of electrode manufacturing defects on lithium-ion battery (LIB) performance is key to reducing the scrap rate and cost during cell manufacturing. In this regard, it is ...
As will be detailed throughout this book, the state-of-the-art lithium-ion battery (LIB) electrode manufacturing process consists of several interconnected steps. There are quality control checks strategically placed that …
Structural defects in lithium-ion batteries can significantly affect their electrochemical and safe performance. Qian et al. investigate the multiscale defects in commercial 18650-type lithium-ion batteries using X-ray tomography and synchrotron-based analytical techniques, which suggests the possible degradation and failure mechanisms ...
Severe inhomogeneities (defects), such as metal particle contamination, significantly impact the cell''s performance. Besides electrical measurements, image-based measurement methods can be...
While great progress has been witnessed in unlocking the potential of new battery materials in the laboratory, further stepping into materials and components manufacturing requires us to identify ...
Within this work, the process for manufacturing electrode sheets for lithium-ion battery (LiB) cells, a widely used and established energy storage system, is considered. The transferability of insights generated for this chemistry should, however, also extend to any other cell chemistry like Na- or Mg-ion batteries as we believe the herein investigated defects to be …
We prove that defective batteries have a significantly increased thermal risk and deteriorated mechanical integrity, but can go undetected due to prompt voltage recovery and insignificant local temperature increase. We discover that the …
This paper provides a review of applications of CT scans in lithium-ion battery failure analysis and demonstrate, the application of CT scans for detecting manufacturing-induced defects and structural deformations in lithium-ion batteries.
Premature battery drain, swelling and fires/explosions in lithium-ion batteries have caused wide-scale customer concerns, product recalls, and huge financial losses in a wide range of products including smartphones, …
This study conducts a design and process failure mode and effect analysis (DFMEA and PFMEA) for the design and manufacturing of cylindrical lithium-ion batteries, with a focus on battery...
To investigate the boundaries of CT, defects such as a partial and complete removal of the coating, a cut, or a kink, as well as particle contaminations of various sizes and materials (aluminium, copper, iron) were chosen.
We prove that defective batteries have a significantly increased thermal risk and deteriorated mechanical integrity, but can go undetected due to prompt voltage recovery and insignificant local temperature increase. We discover that the voltage curve within the first few cycles contains sufficient information to identify defective batteries ...
Manufacturing Defects. Manufacturing defects are a significant factor in lithium battery failures. Even minor flaws during the production process can lead to severe consequences. Issues such as metal particles embedded in the battery or uneven thickness in the separator layer can result in internal short circuits. These defects compromise the integrity of …
The manufacturing of commercial lithium-ion batteries (LIBs) involves a number of sophisticated production processes. Various cell defects can be induced, and, depending …
Structural defects in lithium-ion batteries can significantly affect their electrochemical and safe performance. Qian et al. investigate the multiscale defects in commercial 18650-type lithium-ion batteries using X-ray …
Laser welding is widely used in lithium-ion batteries and manufacturing companies due to its high energy density and capability to join different materials. Welding quality plays a vital role in the durability and effectiveness of welding structures. Therefore, it is essential to monitor welding defects to ensure welds quality. Manual ...
This paper addresses the safety risks posed by manufacturing defects in lithium-ion batteries, analyzes their classification and associated hazards, and reviews the research on metal foreign matter defects, with a focus on copper particle contamination. Furthermore, we summarize the detection methods to identify defective batteries and propose ...
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