Online Battery Simulators

Online Battery Simulators

Welcome to the interactive battery simulation environment for performing battery performance predictions and computer-aided design over the Internet.

The battery simulation(BS) environment for Members Only fully encrypts all submittals to ensure the confidentiality of your design parameters, electrochemical data, and application ranges. To log in, you'll need a password that can be obtained from Dr.Wang

Description

This Web page intends to provide on-line simulation capabilities of predicting battery behavior during discharge, rest, charge, and cycles, based on first principles electrochemical models.

Virtual battery simulators complement the traditional testing method such as this, so as to provide a cost-effective, concurrent engineering approach to battery design, manufacturing, and application.

The mathematical models and numerical procedures used to build the present simulation codes are elaborated in Code Development.

These codes have been experimentally validated to a maximum extent possible; see Code Validation. New experimental data are invited to further validate and improve the current codes.

Potential applications of battery simulators include:

1. Design, scale-up and optimize battery cells and packs by Battery Manufacturers for various consumer applications and/or electric vehicles;

2. Perform what-if studies on certain types of batteries (e.g. Aerospace Batteries) by Federal Agencies and National Laboratories;

3. Generate dynamic performance data by Battery Users for applications such as design of uninterruptible power supplies (UPS), power storage systems of electric vehicles, etc.

Some examples of the utility of battery simulators are given in Code Applications .

The simulators provided in the Online Simulation section are Web-based, online, and real-time (many times better than real-time), thus offering the following advantages for academia, national laboratories and industry:

1. No hardware is required since codes run on our server.

2. No software needs to be installed, thus eliminating code compatibility, maintenance and training problems.

3. Communication and exchange of simulation results between inter-departments are made easy through the Internet.

4. Accessible 24 hours a day, 7 days a week.

5. Each customer can order a customized simulator and associated I/O data format which can then be used exclusively by the customer through a selected password limiting the access to it.

Code Development

Mathematical Models feature simultaneous incorporation of the following fundamental physiochemical phenomena:

Electrochemical reactions at the electrode-electrolyte interfaces
Current flow and potential distribution in the cell
Species transport by migration, diffusion, and advection
Density-driven flow in electrolyte
Electrodes surface passivation
Gas evolution in overcharge

Computational Fluid Dynamics (CFD) techniques are used to numerically solve
the large set of coupled model equations. Unique features of CFD techniques
are:

An unified model incorporating various physiochemical phenomena into a generic equation of a conservation form
A single solver written for the generic conservation equation to solve individual as well as coupled partial differential equations (PDEs)
Various robust procedures to handle strongly non-linear PDEs (e.g., those for fluid motion)
Many advanced solution algorithms systematically integrated over decades
Standardized benchmark validation
A mature tool widely available in industry and academia as there are numerous commercial CFD
Software packages on the market

Model Output Includes:

State of charge (SOC)
Voltage vs. Time
Electrolyte composition
Chemical reaction rates
Current density
Potential

All the output are functions of time and/or space in a battery cell.

Present family of CFD Battery Simulators:

Lead-Acid (Pb-Acid)
Nickel-Metal Hydride (Ni-MH)
Nickel-Cadmium (Ni-Cd)
Lithum Ion (Li-Ion)

Advanced Features:

Coupled electrochemical and transport processes are modeled
To predict acid stratification together with voltage characteristics
Multi-dimensional effects incorporated
Sophisticated charging modes such as pulsed charging
Simulated driving cycles
A first known complete cell model for Ni-MH batteries

	This Web page intends to provide on-line simulation capabilities of predicting battery behavior during discharge, rest, charge, and cycles, based on first principles electrochemical models.
	Virtual battery simulators complement the traditional testing method such as this, so as to provide a cost-effective, concurrent engineering approach to battery design, manufacturing, and application.
	The mathematical models and numerical procedures used to build the present simulation codes are elaborated in Code Development.
	These codes have been experimentally validated to a maximum extent possible; see Code Validation. New experimental data are invited to further validate and improve the current codes.
	Potential applications of battery simulators include: