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Insights from battery experts
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Research Paper
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September 17, 2024
Modeling Particle Versus SEI Cracking in Lithium-Ion Battery Degradation
This work identifies and systematically compares three different SEI interaction theories, and applies them to experimental degradation data from a commercial lithium-ion cell. It shows that SEI delamination without any cracking of the active particles, and SEI microcracking, where cycling only affects SEI growth during the cycle itself, are both unlikely candidates.
Research Papers
Research Paper
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December 8, 2023
Mechanistic cycle aging model for the open-circuit voltage curve of lithium-ion batteries
Cycling lithium-ion batteries causes capacity fade, but also changes the shape of the open-circuit voltage (OCV) curve, due to loss of active material (LAM) and loss of lithium inventory (LLI). To model this change, we recently proposed a novel empirical calendar aging model that is parameterized on component states of health (s) instead of capacity fade only.
Research Papers
Research Paper
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March 11, 2024
Non-destructive electrode potential and open-circuit voltage aging estimation for lithium-ion batteries
In this publication we extend a state-of-the-art electrode open circuit potential model for blend electrodes and inhomogeneous lithiation. We introduce a bi-level optimization algorithm to estimate the open parameters of the electrode model using measurements conducted on the full-cell level with state-of-the-art testing equipment.
Research Papers
Research Paper
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June 9, 2023
Mechanistic calendar aging model for lithium-ion batteries
In this work we present a novel mechanistic calendar aging model for a commercial lithium-ion cell with NCA cathode and silicon-graphite anode. The mechanistic calendar aging model is a semi-empirical aging model that is parameterized on component states of health, instead of capacity.
Research Papers
Research Paper
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April 12, 2023
Measurement Approaches for Thermal Impedance Spectroscopy of Li-ion Batteries
Battery performance, lifetime and safety are highly dependent on temperature. With the recent high demand for power capabilities, heat management has become increasingly relevant.
Research Papers
Research Paper
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February 14, 2023
Evaluation of transmission losses of various battery electric vehicles
Transmission losses in battery electric vehicles have compared to internal combustion engine powertrains a larger share in the total energy consumption and play therefore a major role. In this paper, three simulation models of the Institute of Automotive Engineering are presented.
Research Papers
Research Paper
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September 2, 2021
Quantifiability of Cell-to-Cell Variations
Motivated by the question of why impedance variation is consistently reported to be higher than the variation of other parameters, we show that measuring inherent parameter variations caused by production tolerances is superimposed by effects of an imperfect measurement setup.
Research Papers
Research Paper
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December 2, 2021
Combining EIS and time-domain data
This work proposes a method to combine time-domain and frequency-domain measurement data for parameterization of RC elements by exploiting the full potential of the distribution of relaxation times (DRT).
Research Papers
Whitepaper
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March 25, 2024
Batteries and their Global Warming Potential: a lifecycle view
Lithium-Ion-Batteries are a key technology for green energy, mobility, and for this reason a key technology to mitigate climate change. However, batteries have a significant environmental impact. This impact is created along various steps in the lifecycle, e.g. during the extraction of raw materials or production. This white paper will explore the various stages of a battery's life cycle and how they contribute to its overall Global Warming Potential (GWP).
Whitepapers
Whitepaper
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October 25, 2022
E-bus charging strategies
What kind of e-bus charging strategies exist and what is their impact on battery health and aging? This whitepaper provides these answers and shows how battery analytics can help operators make data-driven, informed decisions regarding the best charging strategies for their e-bus fleets.
Whitepapers
Whitepaper
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May 3, 2022
Approaches to battery modeling
Batteries are complex systems whose operation is determined by a variety of factors, making long term projections a challenge. However, it is possible to understand the future conduct of these systems by building models that mimic their behavior and leverage the computational power to perform the required calculations.
Whitepapers
Whitepaper
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June 3, 2020
The Power of Signalling
What is the potential impact of Battery Health Reports (BHR) on remarketing success of the battery electric vehicle (BEV)? Besides age and mileage, driver profile has a major impact on how long a battery lasts. In the absence of documentation of how a driver has treated the battery, residual value formation remains below its full potential.
Whitepapers
Whitepaper
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March 25, 2024
LFP in energy storage
Lithium-ion batteries play an essential role in the transition to renewable energies and in generating electricity from more reliable and sustainable technologies. NMC has been the widely used technology for the past years, but now LFP is increasing in popularity due to reasons such as cost and safety advantages. However, LFP comes with challenges, particularly regarding accurate state estimations.
Whitepapers
Whitepaper
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May 11, 2022
Energy Storage Analytics
Battery storage systems are an essential component of the energy sector. However, they are complex systems that require special attention. The primary goal of storage owners is to maximize the profit possible from the storage system without taking on additional risk. This is where battery analytics comes into play.
Whitepapers
Template
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August 6, 2024
Battery Analytics for ESS: Template Text for RFPs, RFIs & more
Battery analytics adoption in energy storage systems (ESS) is rapidly increasing. In this document, we provide ready-to-use text that can be assimilated into requests for proposals (RFPs), requests for information (RFIs), and other contracting instruments to reduce or eliminate any friction of battery analytics implementation.
Templates
Infographics & Videos
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December 18, 2024
6 Reasons Why State of Charge Estimations from The BMS Are Tricky
Our infographic shows six reasons on why SoC estimations from the battery management system can be misleading.
Infographics & Videos
Infographics & Videos
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August 22, 2022
TWAICE Vision | Gina Aquilano from ADI
Analog Devices Senior Director of Technology, Gina Aquilano, reveals her vision for the future of batteries' lifecycle and how software can enable a more sustainable battery supply chain.
Infographics & Videos
Infographics & Videos
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September 8, 2022
TWAICE Vision | Wasim Sarwar from Rimac Automobili
This video shows the TWAICE Vision battery analytics conference presentation from Wasim Sarwar - Head of Research & Advanced Engineering at Rimac Automobili.
Infographics & Videos
Infographics & Videos
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August 3, 2022
TWAICE Vision | Alexander Schabert from ViriCiti
Software is the key for a battery-driven future. In February 2022, TWAICE hosted a conference on this topic. This video shows the presentation from Alexander Schabert - Senior Global Director at ViriCiti.
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Innovation in Battery Modeling
David Howey explains how data-driven models can help achieve efficient battery design.
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: AI Is The Key To a Sustainable Battery Life Cycle
Daniela Rittmeier explains how artificial intelligence and data-driven models can be used to achieve a sustainable battery lifecycle
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Availability of Grid-Scale Batteries
Quentin Scrimshire analyzes the differences between ERCOT and U.K. grid availability rates
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Battery Software Is The Key to a Sustainable Future
TWAICE founders Stephan Rohr and Michael Baumann explain how battery analytics software can contribute to sustainable development
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: The Influence of Cell Designs on Battery Aging
Sophie Solchenbach shows that lithium plating is caused by electrolyte motion in one of their research cells.
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Battery Health and EVs
Richard Mohr explains the importance of battery health in evaluating electric vehicle performance
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Rapid Operational Validation Initiative
Susan Babinec explains the U.S. Department of Energy's plan to accelerate the transition from laboratory to mass development
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Battery Incidents Under Scrutiny
Lakshmi Srinivasan explains the causes of energy storage system failures and fires
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Why BESS Monitoring Is Crucial
Miguel Gfall explains how the data collected by the BESS can be used to ensure safe operation.
Infographics & Videos
Infographics & Videos
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April 10, 2024
TWAICE Vision Summit 2024: Emission-Free Charging At No Cost
Thomas Raffeiner explains why batteries are the best environmentally friendly option for V2G flexibility
Infographics & Videos
Guides & Reports
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June 11, 2024
Insights from EPRI's BESS Failure Incident Database
This report is intended to address the failure mode analysis gap by developing a classification system that is practical for both technical and non-technical stakeholders.
Guides & Reports
Guides & Reports
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February 18, 2022
TWAICE Vision 2022 Conference Report
TWAICE hosted a conference about the importance of software in a battery-driven future. Speakers from leading companies in the electric vehicle, energy and battery industries discussed its challenges. A conference report now highlights the main findings of the event.
Guides & Reports
Guides & Reports
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December 8, 2023
5 Steps to Maximize the Value of Battery Energy Storage Systems
This article walks you through some of the most common steps when considering the deployment and operation of a battery storage system, and shows you the power of data monitoring, smart algorithms, and simulations to maximize the economic return of battery energy storage systems throughout their lifetime across multiple revenue streams.
Guides & Reports
Guides & Reports
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April 10, 2024
TWAICE Vision Summit 2024 Report
The TWAICE Vision Summit is a conference about the importance of software in a battery-powered future. Speakers from leading companies in the electric vehicle, energy and battery industries discussed its challenges. Our report highlights the main findings of the conference.
Guides & Reports
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