Global Organization
Signal-shear originated from ultrasonic resonant of Li-ion batteries is studied. Excited by damped sine waves, ultrasonic signals deliver extra battery information. The initial rise time is proposed as a signal feature for precise SOC estimation.
Here we present the first report on Electron Paramagnetic Resonance operando spectroscopy and in situ imaging of a Li-ion battery using Li2Ru0.75Sn0.25O3, a high-capacity (>270 mAh g−1) Li-rich layered oxide, as positive electrode.
Excited by damped sine waves, ultrasonic signals deliver extra battery information. The initial rise time is proposed as a signal feature for precise SOC estimation. Lithium-ion batteries have become one of the most critical energy storage systems due to their long cycle life and high energy density.
High-frequency transducers (SIUI 1-3P20) of 1–3.5 MHz centre frequency were used for ultrasonic testing of LIBs during charge/discharge processes, whose −6 dB fractional bandwidth is 60%. The two transducers are mounted on both sides of a pouch battery by a specifically designed clamp, as shown in Fig. 1(b).
Nevertheless, MRI is promising to identify the spatial inhomogeneity across the electrode plane, such as variations in the lithium plating regions on graphite surfaces, which plays a crucial role in the uneven aging process of the battery [ 89, 90 ].
According to Eq. (1) and the layer properties shown in Table 2, the estimated ultrasonic resonance frequencies increase from 2.05 MHz to 2.16 MHz between the fully discharged (SOC = 0) and charged (SOC = 1) states. This conclusion is supported by an experimentally observed resonance frequency at 2.18 MHz in Ref. .
Nuclear magnetic resonance ... High frequency-encoding gradient strength G f exacerbate field inhomogeneity, resulting in rapid dephasing of precession and fast signal …
Ultrasound spectroscopy up to 6 MHz is carried out on a 12 Ah Lithium-ion battery pouch-cell. The analysis revealed that the attenuation behavior can be effectively …
This article presents a frequency-variable resonant self-heating technique for improving the heating speed of lithium-ion batteries at very low temperatures.
We demonstrated high levels of accuracy of the developed approach in comparison to experimental results (e.g. predicted resonant frequency error ~1% at different …
We demonstrated high levels of accuracy of the developed approach in comparison to experimental results (e.g. predicted resonant frequency error ~1% at different …
Internal growth of Li-metal deposition is critical for evaluating the state of safety in lithium-ion batteries. Here the authors show a Li-metal detection method utilizing high …
High-frequency transducers (SIUI 1-3P Φ 20) of 1–3.5 MHz centre frequency were used for ultrasonic testing of LIBs during charge/discharge processes, whose −6 dB …
Each used battery has unique physical properties, such as internal resistance and resonance frequency. Thus, to improve battery recovery using the sulfate reduction method, this study proposes ...
Ultrasound spectroscopy up to 6 MHz is carried out on a 12 Ah Lithium-ion battery pouch-cell. The analysis revealed that the attenuation behavior can be effectively …
Panel (a) displays the attenuation coefficients of a 12 Ah Kokam lithium-ion battery over frequencies at different SoCs, showcasing the frequency-dependent behavior. …
This paper studies the high frequency ripple generated in the working circuit of lithium battery. Firstly, the generation and detection methods of high frequency ripple are …
Fig. 3. Typi cal Charging Cycle data o f a standar d Lithium-io n battery [1 5] going to be retrieved later. ... [18] R.L. Steigerwald, " High-frequency resonant transistor DC-DC .
Here we present the first report on Electron Paramagnetic Resonance operando spectroscopy and in situ imaging of a Li-ion battery using Li2Ru0.75Sn0.25O3, a high-capacity …
Here we present the first report on Electron Paramagnetic Resonance operando spectroscopy and in situ imaging of a Li-ion battery using Li2Ru0.75Sn0.25O3, a high-capacity …
Abstract: This article proposes an isolated half-bridge LCC resonant battery charger with an inherent CC-CV charge profile and simple structure for lithium-ion battery …
In the automotive industry, ageing mechanisms and diagnosis of Li-ion batteries depending on charge rate are of tremendous importance. With this in mind, we have …
This paper presents the design and optimization of a small-size electromagnetic induction heating control system powered by a 3.7 V–900 mAh lithium battery and featuring an …
In this chapter, the application of nuclear magnetic resonance (NMR) to lithium-ion batteries is discussed. It is shown that observation of lithium in anode carbon …
high cost, and low AC heating frequency, the existing AC heating devices are generally improper for EV applications. In the light of this, a compact high-frequency heater is …
Abstract: This article proposes an isolated half-bridge LCC resonant battery charger with an inherent CC-CV charge profile and simple structure for lithium-ion battery …
Panel (a) displays the attenuation coefficients of a 12 Ah Kokam lithium-ion battery over frequencies at different SoCs, showcasing the frequency-dependent behavior. Regions dominated by absorption (conversion of sound …
This emphasizes the importance of selecting a suitable interrogation frequency for ultrasound investigations in lithium-ion batteries. The model accurately replicates the …
This emphasizes the importance of selecting a suitable interrogation frequency for ultrasound investigations in lithium-ion batteries. The model accurately replicates the observed weakening of resonances with …
This article proposes an isolated half-bridge LCC resonant battery charger with an inherent CC-CV charge profile and simple structure for lithium-ion battery charger in EVs …
Knowing the morphology of lithium anodes is important for designing batteries with long service life. Here, pulse electron paramagnetic resonance is used to monitor pulsed …
High frequency-encoding gradient strength G f exacerbate field inhomogeneity, resulting in rapid dephasing of precession and fast signal decay, which in turn increases Δ ω …