Directional DC Charge-Transfer Resistance on an Electrode–Electrolyte Interface in an AC Nyquist Curve on Lead-Acid Battery

Both the frequency domain Nyquist curve of electrochemical impedance spectroscopy (EIS) and time domain simulation of DC equivalent first principle linear circuit (FPLCDCequ) are some of the fundamentals of lead-acid batteries management system design. The Nyquist curve is used to evaluate batteries’ state of health (SoH), but the curve does not distinguish charging/discharging impedances on electrode–electrolyte interfaces in the frequency domain. FPLCDCequ is used to simulate batteries’ terminal electrical variables, and the circuit distinguishes charging/discharging impedances on electrode–electrolyte interfaces in the time domain. Therefore, there is no direct physical relationship between Nyquist and FPLCDCequ This paper proposes an AC equivalent first principle linear circuit (FPLCACequ) by average switch modeling, and the novel circuit distinguishes charging/discharging impedances on electrode–electrolyte interfaces in Nyquist. The novel circuit establishes a physical bridge between Nyquist and FPLCDCequ for lead-acid batteries management system design.

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A convolution-based black-box approach for incorporating linear circuit blocks described by frequency-domain data into a nonlinear transient time-domain simulator

1993 IEEE MTT-S International Microwave Symposium Digest ◽

10.1109/mwsym.1993.277083 ◽

2002 ◽

Cited By ~ 1

Author(s):

P. Halloran ◽

T.J. Brazil

Keyword(s):

Frequency Domain ◽

Time Domain ◽

Black Box ◽

Transient Time ◽

Linear Circuit ◽

Nonlinear Transient ◽

Circuit Blocks

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Hybrid modeling of lead–acid batteries in frequency and time domain

Journal of Power Sources ◽

10.1016/j.jpowsour.2004.11.009 ◽

2005 ◽

Vol 144 (2) ◽

pp. 461-466 ◽

Cited By ~ 31

Author(s):

M. Thele ◽

S. Buller ◽

D.U. Sauer ◽

R.W. De Doncker ◽

E. Karden

Keyword(s):

Time Domain ◽

Hybrid Modeling ◽

Lead Acid Batteries ◽

Lead Acid

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Physical Layer Authentication and Identification of Wireless Devices Using the Synchrosqueezing Transform

Applied Sciences ◽

10.3390/app8112167 ◽

2018 ◽

Vol 8 (11) ◽

pp. 2167 ◽

Cited By ~ 7

Author(s):

Gianmarco Baldini ◽

Raimondo Giuliani ◽

Gary Steri

Keyword(s):

Frequency Domain ◽

Time Domain ◽

Physical Layer ◽

The Novel ◽

Wireless Devices ◽

Time Frequency ◽

Synchrosqueezing Transform ◽

Communication Devices ◽

Rf Devices ◽

Wireless Device

This paper addresses the problem of authentication and identification of wireless devices using their physical properties derived from their Radio Frequency (RF) emissions. This technique is based on the concept that small differences in the physical implementation of wireless devices are significant enough and they are carried over to the RF emissions to distinguish wireless devices with high accuracy. The technique can be used both to authenticate the claimed identity of a wireless device or to identify one wireless device among others. In the literature, this technique has been implemented by feature extraction in the 1D time domain, 1D frequency domain or also in the 2D time frequency domain. This paper describes the novel application of the synchrosqueezing transform to the problem of physical layer authentication. The idea is to exploit the capability of the synchrosqueezing transform to enhance the identification and authentication accuracy of RF devices from their actual wireless emissions. An experimental dataset of 12 cellular communication devices is used to validate the approach and to perform a comparison of the different techniques. The results described in this paper show that the accuracy obtained using 2D Synchrosqueezing Transform (SST) is superior to conventional techniques from the literature based in the 1D time domain, 1D frequency domain or 2D time frequency domain.

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Experimental investigation on the impact of evaporative cooling based battery thermal management system on charging process of valve regulated lead acid batteries in E-bike

Journal of Physics Conference Series ◽

10.1088/1742-6596/2070/1/012087 ◽

2021 ◽

Vol 2070 (1) ◽

pp. 012087

Author(s):

Jaydeep M Bhatt ◽

P V Ramana ◽

Jignesh R Mehta

Keyword(s):

Thermal Management ◽

Thermal Behaviour ◽

Management System ◽

Evaporative Cooling ◽

Cooling Mode ◽

Lead Acid Batteries ◽

Battery Thermal Management ◽

Thermal Management System ◽

Battery Thermal Management System ◽

Lead Acid

Abstract The thermal behaviour of valve regulated lead acid batteries with an evaporative cooling-based thermal management system is experimentally examined during the charging process of an E-bike. The thermal behaviour of valve regulated lead acid batteries is investigated during charging process with three different cooling strategies: evaporative cooling-based battery thermal management system, pre-cooling + battery thermal management system, and natural convection. The valve regulated lead acid batteries from the OREVA ALISH E-bike were used for testing. A portable evaporative cooling system was built for investigation based on available space on the E-bike. The results show that the developed evaporative cooling-based battery thermal management system kept temperatures between 1.5°C and 2.2°C below ambient during the charging process. The temperature of the battery during the charging process is increased slightly, by 1.6°C during the pre-cooling + battery thermal management system cooling mode. The temperature uniformity among valve regulated lead acid batteries was improved during the charging process with pre-cooling + thermal management system cooling mode.

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Development of a Robust Thermal Management System for Lead-Acid Batteries

10.4271/2021-01-0232 ◽

2021 ◽

Author(s):

Alaa El-Sharkawy ◽

Dipan Arora ◽

Amr Sami ◽

Mohamed Zaki ◽

Krishna Guntur

Keyword(s):

Thermal Management ◽

Management System ◽

Lead Acid Batteries ◽

Thermal Management System ◽

Lead Acid

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Modeling transient processes in lead-acid batteries in the time domain

Journal of Energy Storage ◽

10.1016/j.est.2020.101430 ◽

2020 ◽

Vol 29 ◽

pp. 101430 ◽

Cited By ~ 2

Author(s):

Moritz Huck ◽

Dirk-Uwe Sauer

Keyword(s):

Time Domain ◽

Transient Processes ◽

Lead Acid Batteries ◽

The Time Domain ◽

Lead Acid

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Labview Based Experimental System Design for the Investigation of Magnetorheologic Fluids Inductance

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.246-247.1226 ◽

2012 ◽

Vol 246-247 ◽

pp. 1226-1230

Author(s):

Guo Tian He ◽

Jie Sheng Chen ◽

Li Song ◽

Yan Ma ◽

Ming Li ◽

...

Keyword(s):

System Design ◽

Frequency Domain ◽

Time Domain ◽

Signal Analysis ◽

High Performance ◽

Experimental System ◽

Experimental Results ◽

Important Impact ◽

Intelligent Material ◽

And Function

A Magnetorheologic fluid is a kind of intelligent material with high performance, its inductance has an important impact on its manufacturing and application, and thus it is important to investigate its inductance. This paper mainly introduced the method using labview to develop an experimental system to investigate magnetorheologic fluids inductance, and built such a system. It also discussed the composition and function, and designed the experimental procedures. We detected and analysis magnetorheologic fluids inductance under different conditions. This system utilized software to implement realtime sampling of time domain signals, display frequency domain signal and some other signal analysis function. Experimental results indicated that this system is feasible.

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