IonWorks Project

This project uses PyBaMM (Python Battery Mathematical Modelling), an open-source battery simulation package written in Python. PyBaMM's mission is to accelerate battery modelling research by providing open-source tools for multi-institutional, interdisciplinary collaboration. Broadly, PyBaMM consists of (i) a framework for writing and solving systems of differential equations, (ii) a library of battery models and parameters, and (iii) specialized tools for simulating battery-specific experiments and visualizing the results. Together, these enable flexible model definitions and fast battery simulations, allowing users to explore the effect of different battery designs and modeling assumptions under a variety of operating scenarios.

🌎 Navigating the repository

The repository is structured as follows:

• projectnanme: contains the source code
• docs: contains documentation
• examples: contains examples of how to use the code

📦 Adding new parameter sets

To add a new parameter set to the package, first add a python file to the projectname/parameters folder. The file should define a function get_parameter_values that returns a dictionary of parameter values. See the existing PyBaMM parameter sets for examples. Then register a new entry point in pyproject.toml under [project.entry-points.pybamm_parameter_sets] with the name of the parameter set and the path to the python file. For example:

[project.entry-points.pybamm_parameter_sets]
MyCell = "projectname.parameters.mycell:get_parameter_values"

After adding new entry points you will need to reinstall the package using pip install . (or pip install -e . for a local installation) in the root directory.

It is of course possible to simply define a parameter set locally and import it into a script or notebook, but adding an entry point allows it to be used in the same way as the other PyBaMM parameter sets (pybamm.ParameterValues("name")).

📊 Data

All data is stored separately from this repository. You can set a data filepath as an environment varibale by creating a .env file in the root folder with the following contents:

DATA_PATH="path/to/data"

Then, in any script or notebook you can retive the data path by doing

import hackion

data_path = hackion.utils.environ["DATA_PATH"]

Make sure you add .env to .gitignore. Alternatively, you can simply specify the filepath manually.

🔋 Using the package

The following example...

📖 Documentation

Documentation can be found in the docs directory.

🚀 Installation

The following instruction are for installing the package locally so that its contents can be edited. To install in site-packages simply use pip install . instead of pip install -e .. We recommend installing within a virtual environment in order to not alter any python distribution files on your machine.

PyBaMM is available on GNU/Linux, MacOS and Windows. For more detailed instructions on how to install PyBaMM, see the PyBaMM documentation.

Linux/Mac OS

To install the requirements on Linux/Mac OS use the following terminal commands:

1. Clone the repository or download and unzip the source code.
2. Change into the project-template directory

cd project-template

3. Create a virtual environment

virtualenv env

4. Activate the virtual environment

source env/bin/activate

5. Install the package

pip install -e .

Using pip install -e . instead of just pip install . will install the package in editable mode from the local project path instead of trying to install in site-packages.

Windows

To install the requirements on Windows use the following commands:

1. Clone the repository or download and unzip the source code.
2. Change into the project-template directory

cd project-template

3. Create a virtual environment

python -m virtualenv env

4. Activate the virtual environment

env\Scripts\activate

where env is the path to the environment created in step 3 (e.g. C:\Users\'Username'\env\Scripts\activate.bat).

5. Install the package

pip install -e .

Using pip install -e . instead of just pip install . will install the package in editable mode from the local project path instead of trying to install in site-packages.

As an alternative, you can set up Windows Subsystem for Linux. This allows you to run a full Linux distribution within Windows.

Troubleshooting

Problem: ModuleNotFoundError: No module named 'wheel'.

Solution: Try pip install wheel before pip install ..

Problem: Changes I make to the code in the project-template folder aren't reflected when I try to run the code.

Solution: Install in editable model by doing pip install -e ..

📫 Get in touch

If you have any questions please get in touch via email info@ion-works.com.