Essays about: "Test methods for batteries"

Showing result 1 - 5 of 18 essays containing the words Test methods for batteries.

  1. 1. Automatic Detection of Structural Deformations in Batteries from Imaging data using Machine Learning : Exploring the potential of different approaches for efficient structural deformation detection

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Maira Khan; [2023]
    Keywords : CT scan; electrode peaks; jelly roll; keypoints; structural deformation; traditional computer vision; deep neural network; CT-skanning; elektrodtoppar; gelérulle; nyckelpunkter; strukturell deformation; Traditionellt datorseende; djupt neuralt nätverk;

    Abstract : The increasing occurrence of structural deformations in the electrodes of the jelly roll has raised quality concerns during battery manufacturing, emphasizing the need to detect them automatically with the advanced techniques. This thesis aims to explore and provide two models based on traditional computer vision (CV) and deep neural network (DNN) techniques using computed tomography (CT) scan images of jelly rolls to ensure that the product is of high quality. READ MORE

  3. 2. Root-cause analysis with data-driven methods and machine learning in lithium-ion battery tests : Master's thesis about detecting deviations with PCA

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Frans Rademacher; [2022]
    Keywords : Machine learning; Li-ion; batteries; PCA; deviations; anomaly detection; root-cause analysis; differential capacity; feature engineering;

    Abstract : The increased demand of energy storage systems and electric vehicles on the market result in high demand of lithium-ion batteries. As a lithium-ion battery manufacturer, Northvolt runs quality tests on the products to assess their performance, life and safety. READ MORE

  4. 3. A method development and complete validation of coin half-cell test procedure

    University essay from KTH/Kemiteknik

    Author : Prasad Korde; [2022]
    Keywords : Cathode; Validation; Gage R and R; Six Sigma; Impedance spectroscopy; katod; validering; Gauge R och R; sex sigma; impedansspektroskopi;

    Abstract : ”Coin cell”-tillverkningen täcker hela processen från NMC-pulver till faktisk cell- och prestandautvärdering genom att cykla celler. Nydanande utveckling av elektrodmaterialen är nyckeln till att öka energitätheten hos litium-jon/metall-batterier för elfordon och nätlagring. READ MORE

  5. 4. Short-circuit current detection in electric vehicles

    University essay from Uppsala universitet/Signaler och system

    Author : Max Torbjörner; [2022]
    Keywords : Electric vehicles; Current measurement; Short-circuit; BEV Trucks; BJB;

    Abstract : In recent years the vehicle industries have been making much efforts to reduce the environmentalimpact by switching from the traditional combustion engine to electrification with battery driven electricvehicles. Producing electric trucks requires more batteries and operates at a higher voltage and currentthan commercial electric cars. READ MORE

  6. 5. Air Cooling of Lithium Polymer Batteries : Experiments and Calculations on the KTH Formula Student 2022 Race Car Accumulator

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : William Olsson; Linus Grinde; [2022]
    Keywords : ;

    Abstract : Lithium batteries work optimally at a temperature of around 15 to 35 °C, with a maximum temperature of around 60 °C. To get the most performance out of a formula student car the cooling needs to keep the battery cells within these temperatures during the competition. READ MORE