METHOD AND SYSTEM FOR DETECTING CONTACTOR WELD
FIG. 1 illustrates an example block topology of an electrified vehicle illustrating drivetrain and energy storage components; Referring to FIG. 3, an example circuit diagram of a battery contactor weld detection circuit 200
Relay-welding detection circuit and power supplying system
a power supply system for an electric vehiclethat supplies/cuts off a current to an electric storage apparatus for supplying power to a vehicle driving motor in a charging path from an external power supply to the electric storage apparatus. the voltage detection circuitis a switch using a transistor.
Epitaxial Welding of 3D and 2D Perovskite Single Crystals for Direct-Indirect Energy-Conversion X-ray Detection and Imaging,ACS Energy
In addition, the RL of the 2D SC sandwich layer in the formed 3D/2D/3D SC was recovered by the 3D SC, resulting in an enhanced energy-conversion efficiency for X-ray detection. Therefore, the 3D/2D/3D SC X-ray detectors achieved a 566% improvement in sensitivity and an ultralow detection limit of 14.2 nGy s –1 .
An Incremental Grey-Box Current Regression Model for Anomaly Detection of Resistance Mash Seam Welding
Annealing and galvanization production lines in steel mills run continuously to maximize production throughput. As a part of this process, individual steel coils are joined end-to-end using mash seam welding. Weld breaks result in a production loss of multiple days, so non-destructive, data-driven techniques are used to detect and replace poor
Mathematics | Free Full-Text | A CNN-LSTM and Attention-Mechanism-Based Resistance Spot Welding Quality Online Detection
In order to detect welding quality, it is necessary to reveal the real-time correlation between the welding condition data/result images and welding quality. In recent years, most researchers have found that the dynamic welding current, dynamic resistance, electrode displacement, welding voltage, dynamic power, welding sound and welding
Laser welding defects detection in lithium-ion battery poles
Sensors. 2023. TLDR. This work uses image processing and machine learning techniques to automatically detect faults in the battery manufacturing process and applies K-fold cross-validation with the proposed approach to validate the significance of the approach. Expand.
Laser welding defects detection in lithium-ion battery poles
Strong demand for electric vehicles and energy storage applications has led to a rapid expansion of the battery sector. Laser welding is widely used in lithium-ion
Sensors | Free Full-Text | Weld Seam Tracking and Detection
Large-scale welding devices often require high-altitude detection, posing technical challenges for weld seam tracking and detection robots, particularly in terms of wall-climbing functionality. Extensive research has been conducted in this area, focusing on magnetic wall-climbing robots [ 10, 11, 12 ] and negative-pressure wall-climbing robots [
Energy Meter Patch Resistance and Welding Spot Anomaly Detection
Energy Meter Patch Resistance and Welding Spot Anomaly Detection Method Based on Machine Vision Chao Jiang 1, Shengze Chen 1, Zhijing Zhang 1 and Rui Li 1 Published under licence by IOP Publishing Ltd Journal of Physics: Conference Series, Volume 2428, 2022 2nd International Conference on Detection Technology and
Epitaxial Welding of 3D and 2D Perovskite Single Crystals for Direct-Indirect Energy-Conversion X-ray Detection and Imaging | ACS Energy
Perovskite single crystals (SC) with strong X-ray absorption and low fabrication costs are expected to be the next generation of materials for X-ray detection. However, the low resistivity and serious ion migration of three-dimensional (3D) perovskites lead to a high leakage current and response drift as well as the low carrier mobility and
Investigating the Detection Capability of Acoustic Emission Monitoring to Identify Imperfections Produced by the Metal Active Gas (MAG) Welding
Welding inspection is a critical process that can be severely time-consuming, resulting in productivity delays, especially when destructive or invasive processes are required. This paper defines the novel approach to investigate the physical correlation between common imperfections found in arc welding and the propensity to
Quality assurance of battery laser welding: A data-driven approach
The welding was performed using 3 different power levels (1.2, 1.4 & 1.6kW) with the ultimate to induce changes in the mechanical and electrical quality of the joints.
Sensors | Free Full-Text | Discontinuity Detection in the Shield Metal Arc Welding Process
This work proposes a new methodology for the detection of discontinuities in the weld bead applied in Shielded Metal Arc Welding (SMAW) processes. The detection system is based on two sensors—a microphone and piezoelectric—that acquire acoustic emissions generated during the welding. The feature vectors extracted from the sensor
Metals | Free Full-Text | Real-Time Detection of Weld Defects for Automated Welding
In the process of welding zinc-coated steel, zinc vapor causes serious porosity defects. The porosity defect is an important indicator of the quality of welds and degrades the durability and productivity of the weld. Therefore, this study proposes a deep neural network (DNN)-based non-destructive testing method that can detect and predict
Battery welding
The technology is well-established in industry and is routinely used to join turbocharger wheels to shafts, for example. EB welding produces clean, high-quality welds with fine control of penetration depth and a very small heat-affected zone. It is also potentially 20 times faster than laser welding.
Quality assurance of battery laser welding: A data-driven approach
Tel.: +30-2610-910160; fax: +30-2610-997314. E-mail address: [email protected] Abstract Battery packs manufactured for electromobility application consist of battery cells/modules connected with joints. While their quality has been significantly improved with the utilization of Laser welding in terms of automation, minimizing the heat
Research on pulsed eddy current automatic detection technology for weld
DOI: 10.1016/J.MEASUREMENT.2021.109081 Corpus ID: 234080156 Research on pulsed eddy current automatic detection technology for weld defects of pressure vessel cylinder The stress of weld in pressure vessel is complex and the working conditions are poor.
Stored Energy Welders | AMADA WELD TECH
The Stored Energy welding power supply – commonly called a Capacative Discharge Welder or CD Welder – extracts energy from the power line over a period of time and stores it in welding capacitors. Thus, the effective weld energy is independent of line voltage fluctuations. This stored energy is rapidly discharged through a pulse transformer
Laser welding of current collector foil stacks in battery
Based on an analysis of the requirements for minimum mechanical seam strengths, this study confirms that laser beam welding using a green high-power disk
Welding methods for electrical connections in battery systems
Battery cells are most often put into modules or packs when produced for electrically driven vehicles. The variable of greatest influence when welding battery packs is the contact resistance between the cell and the connection tab.
Research on the Weld Position Detection for the T-Joints in Web-Core Sandwich Panels Based on Eddy Current Technology
Web-core sandwich panels have gained the popularity in various fields, especially aviation and shipbuilding, etc. Penetration welding was considered as an effective process to manufacture such a structure through a T-joint. To ensure the formation quality and mechanical properties of weld, the welding torch needs to be aligned with the
Infrastructures | Free Full-Text | Infrared Thermography for Weld Inspection: Feasibility and Application
Traditional ultrasonic testing (UT) techniques have been widely used to detect surface and sub-surface defects of welds. UT inspection is a contact method which burdens the manufacturer by storing hot specimens for inspection when the material is cool. Additionally, UT is only valid for 5 mm specimens or thicker and requires a highly skilled
Welding techniques for battery cells and resulting electrical
Plasma parameters such as emission line intensity, electron temperature, and number density were effectively used to diagnose the welding state (non-welding,
WeldNet: a lightweight deep learning model for welding defect
Huang et al. [] designed an eddy current orthogonal axial probe for eddy current detection of carbon steel plate welds, and the experiment proved that the probe
Welding of magnesium and its alloys: an overview of methods
The optimal forming weld parameters are 225 A current, 140 A bypass current, 21 V welding voltage, 2.8 m min −1 welding speed, and 5 mm between the end of the tungsten electrode and the workpiece. Hybrid GMAW-GTAW welding is a high-speed welding technology with high consistency and excellent forming of Mg alloys and
Materials | Free Full-Text | The Detection of Burn-Through Weld Defects Using Noncontact Ultrasonics
Nearly all manufactured products in the metal industry involve welding. The detection and correction of defects during welding improve the product reliability and quality, and prevent unexpected failures. Nonintrusive process control is critical for avoiding these defects. This paper investigates the detection of burn-through damage using
Ti3C2Tx MXene/graphene nanocomposites: Synthesis and application in electrochemical energy storage
For the application of Ti 3 C 2 MXene/rGO in high-performance energy storage systems, it has demonstrated good volume capacitance, high energy/power density and long cycle life. Although these developments are exciting, the mass capacitors and area capacitors need to be further improved.
Sensors | Free Full-Text | Research on Detection Mechanism of Weld Defects of Carbon Steel Plate Based on Orthogonal Axial Eddy Current
The uneven surface of the weld seam makes eddy current testing more susceptible to the lift-off effect of the probe. Therefore, the defect of carbon steel plate welds has always been a difficult problem in eddy current testing. This study aimed to design a new type of eddy current orthogonal axial probe and establish the finite element
Applied Sciences | Free Full-Text | Quality Monitoring for Micro Resistance Spot Welding with Class-Imbalanced Data Based on Anomaly Detection
Micro resistance spot welding (MRSW) is an important technology widely used in electronics manufacturing for micro component joining. For the joining of micro enameled wire, quality control is heavily dependent on manual inspection till now. In this paper, a quality monitoring approach based on isolation forest (iForest) is proposed to identify
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Lithium-ion battery cells are increasingly being used as energy storage devices for electrically powered vehicles on account of their high energy density.
Laser welding defects detection in lithium-ion battery poles
Laser welding defects detection in lithium-ion battery poles. N. Din, Li Zhang, +4 authors. Yatao Yang. Published in Engineering Science and 1 October 2023.
Development of a flywheel energy storage-based welding system
In modern resistance spot welding applications dynamic current control is essential, but at the same time, the current drawn from the mains should be as low and consistent as possible, making an energy storage mandatory. As the type of storage is extremely important for the total system performance, it must be selected carefully focusing primarily
Sensors | Free Full-Text | WD-YOLO: A More Accurate YOLO for Defect Detection in Weld
X-ray images are an important industrial non-destructive testing method. However, the contrast of some weld seam images is low, and the shapes and sizes of defects vary greatly, which makes it very difficult to detect defects in weld seams. In this paper, we propose a gray value curve enhancement (GCE) module and a model
A Lightweight Deep-Learning Algorithm for Welding Defect
This article proposes a lightweight deep-learning algorithm called MGNet for detecting welding defects in the current collectors. We introduce a lightweight MDM module based on multiscale channels, which utilizes deep dynamic convolutions as its
Ultimate Guide to Weld Inspection: Ensuring Safety & Quality
Weld Inspection: A Guide. Weld inspection is a process in which welds are examined for quality, strength, safety, and a number of other important factors. In a weld inspection, trained specialists make a series of quality assurance checks before, during and after the welding process, ensuring that the fabrication is as safe and secure as possible.
Flexible 3D carbon cloth as a high-performing
High-performance energy storage and conversion devices with high energy density, power density and long-term cycling life are of great importance in current consumer electronics, portable electronics and
Welding methods for electrical connections in battery systems
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In situ detection of welding defects: a review | Welding in the World
Weld defect detection is a crucial aspect for improving the productivity and quality of the welding process. Several non-destructive methods exist for the identification of defects post weld deposition. However, they only help assess the quality of the component and offer no inputs while the welding process is being performed. Real-time or in situ
Noncontact laser ultrasonic inspection of weld defect in lithium
To address the limitations of the above methods, this study aims to develop and validate a practical inspection method for battery cap welds. A laser ultrasonic inspection technique is proposed to detect invisible weld defects at the weld joint of a cylinder lithium-ion battery cap. The proposed technique employs an Nd: YAG laser and a
Materials | Free Full-Text | Online Detection of Laser Welding
The accurate online detection of laser welding penetration depth has been a critical problem to which the industry has paid the most attention. Aiming at the laser welding process of TC4 titanium alloy, a multi-sensor monitoring system that obtained the keyhole/molten pool images and laser-induced plasma spectrum was built. The
Sensors | Free Full-Text | A Weld Defects Detection System
Improved product quality and production methods, and decreased production costs are important objectives of industries. Welding processes are part of this goal. There are many studies about monitoring and controlling welding process. This work presents a non-intrusive on-line monitoriment system and some algorithms capable of
