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Open Sustainable Technology

Battery-Emulator

This software enables EV battery packs to be used for stationary storage in combination with solar inverters.
https://github.com/dalathegreat/battery-emulator

Category: Energy Storage
Sub Category: Battery

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Last synced: about 12 hours ago
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Repository metadata

This revolutionary software enables EV battery packs to be easily reused for stationary storage in combination with solar inverters

README.md

Battery-Emulator ⚡🔋

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What is Battery Emulator?

Many manufacturers sell home battery systems to enable homeowners to store power collected from the grid, or renewable sources, to use at times when electricity demand is higher. However almost all of these home battery systems charge a high cost for every kilowatt hour (kWh) of capacity you buy.

At the same time, EV manufacturers have been putting high capacity battery packs into their cars, with no firm plan for what should happen to those batteries if the car is damaged in a crash, or reaches the end of its life as a vehicle.

Battery Emulator enables EV battery packs to be repurposed for stationary storage. It acts as a translation layer between the EV battery and the home inverter. This makes it extremely cheap and easy to use large EV batteries in a true plug'n'play fashion!

[!CAUTION]
Working with high voltage is dangerous. Always follow local laws and regulations regarding high voltage work. If you are unsure about the rules in your country, consult a licensed electrician for more information.

Quickstart guide 📜

Installation basics 🪛

  1. Connect your Battery Emulator hardware to your EV battery
  2. Connect your Battery Emulator hardware to your inverter
  3. Wire up high voltage cable between the inverter and the battery
  4. Add a low voltage power supply to your Battery Emulator hardware
  5. Configure any additional requirements to allow Battery Emulator to switch on your EV battery (also referred to as 'closing contactors')
  6. Enjoy a big cheap grid connected battery!

For examples showing wiring, see each battery type's own Wiki page. For instance the Nissan LEAF page

How to compile the software 💻

Start by watching this quickstart guide

IMAGE ALT TEXT HERE

  1. Download the Arduino IDE: https://www.arduino.cc/en/software
  2. Open the Arduino IDE.
  3. Click File menu -> Preferences -> Additional Development -> Additional Board Manager URLs -> Enter the URL in the input box: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json and click OK.
  4. Click Tools menu -> Board: "...." -> Boards Manager..., install the esp32 package by Espressif Systems (not Arduino ESP32 Boards), then press Close.

NOTE: The ESP32 version depends on which release of Battery-Emulator you are running! See the Release Notes for more info on which version to use with the current version (Suggested ESP32 version X.Y.Z)

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  1. The Arduino board should be set to ESP32 Dev Module and Partition Scheme to Minimal SPIFFS (1.9MB APP with OTA/190KB SPIFFS) (under Tools -> Board -> ESP32 Arduino) with the following settings:

ArduinoSettings

  1. Select which battery type you will use, along with other optional settings. This is done in the USER_SETTINGS.h file.
  2. Copy the USER_SECRETS.TEMPLATE.h file to USER_SECRETS.h and update connectivity settings inside this file.
  3. Press Verify and Upload to send the sketch to the board.
    NOTE: In some cases, the LilyGo must be powered through the main power connector instead of USB-C
    when performing the initial firmware upload.
    NOTE: On Mac, the following USB driver may need to be installed: https://github.com/WCHSoftGroup/ch34xser_macos

NOTE: If you see garbled messages on the serial console, change the serial console to match the baud rate to the code, currently 115200.

NOTE: If you see the error Sketch too big then check you set the Partition Scheme above correctly.

This video explains all the above mentioned steps:
https://youtu.be/_mH2AjnAjDk

Linux Development Environment Setup

In addition to the steps above, ESP32 requires a dependency for a Python module, pyserial install using the cli.
python3 -m pip install pyserial

If you're using Ubuntu , use apt to manage the dependencies of arduino:
pyserial install: sudo apt install python3-serial

Arduino AppImage must be set as executable after downloading to run correctly
example: chmod 775 arduino-ide_2.3.3_Linux_64bit.AppImage

Also you might need to install FUSE to run appimages
sudo apt install libfuse2

Dependencies 📖

This code uses the following excellent libraries:

It is also based on the information found in the following excellent repositories/websites:

Like this project? 💖

Leave a ⭐ If you think this project is useful. Consider hopping onto my Patreon to encourage more open-source projects!

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Committers metadata

Last synced: 5 days ago

Total Commits: 2,343
Total Committers: 56
Avg Commits per committer: 41.839
Development Distribution Score (DDS): 0.402

Commits in past year: 1,407
Committers in past year: 44
Avg Commits per committer in past year: 31.977
Development Distribution Score (DDS) in past year: 0.463

Name Email Commits
Daniel Öster d****t@g****m 1402
Cabooman 8****n 101
Jaakko Haakana j****o@h****t 97
amarofarinha 1****a 89
lenvm l****m 88
mvgalen m****n@g****m 76
josiahhiggs 7****s 55
rha r****o@o****g 48
wjcloudy 5****y 34
Brett Christensen b****n@r****m 33
Jakob Löw j****b@m****e 31
laughingguffly e****m@g****m 27
No-Signal m****t@h****d 26
Steven Maresca s****a@g****m 23
LevinSwe l****m@h****m 21
nmainil 1****l 20
pre-commit-ci[bot] 6****] 18
Ole o****d@l****k 18
Christopher Obbard o****c@g****m 15
Bernhard Urban-Forster l****m@g****m 13
rjsc r****t@g****m 13
itpr-gwis2 b****2@i****e 9
Paul Brand p****d@g****m 8
József Nagy 1****o 7
Jamie Jones j****e@j****k 5
James Brookes jb@j****m 5
mathl79 m****l@g****t 4
freddanastrom f****k@l****e 4
JorgenSeemann 8****n 4
Brian McKenna b****n@b****g 3
and 26 more...

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Issue and Pull Request metadata

Last synced: 1 day ago

Total issues: 482
Total pull requests: 805
Average time to close issues: about 2 months
Average time to close pull requests: 4 days
Total issue authors: 202
Total pull request authors: 46
Average comments per issue: 3.88
Average comments per pull request: 0.79
Merged pull request: 709
Bot issues: 0
Bot pull requests: 3

Past year issues: 384
Past year pull requests: 585
Past year average time to close issues: about 1 month
Past year average time to close pull requests: 4 days
Past year issue authors: 168
Past year pull request authors: 41
Past year average comments per issue: 2.94
Past year average comments per pull request: 0.92
Past year merged pull request: 499
Past year bot issues: 0
Past year bot pull requests: 3

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/dalathegreat/battery-emulator

Top Issue Authors

  • dalathegreat (40)
  • havrla (13)
  • GoSmartEV (11)
  • malcolmputer (9)
  • StarkJohan (9)
  • pazdzierzz (9)
  • pmajor021 (8)
  • Jaywatts (8)
  • jakub8109 (7)
  • lenvm (7)
  • dvbhannes (6)
  • DeadmaroZ-TLOTL (6)
  • EnergibatteriMax (6)
  • obbardc (6)
  • HansNetcom (5)

Top Pull Request Authors

  • dalathegreat (450)
  • lenvm (70)
  • amarofarinha (41)
  • kyberias (33)
  • mvgalen (28)
  • StarkJohan (21)
  • No-Signal (16)
  • wjcloudy (13)
  • LevinSwe (11)
  • kukumagi (10)
  • rjsc (10)
  • obbardc (10)
  • M4GNV5 (7)
  • josiahhiggs (7)
  • matvey83 (6)

Top Issue Labels

  • Feature request (118)
  • bug (111)
  • Troubleshooting install (50)
  • question (49)
  • enhancement (37)
  • help wanted (16)
  • Connectivity (15)
  • crash (14)
  • hardware (8)
  • Triage (8)
  • wontfix (6)
  • invalid (3)
  • good first issue (2)
  • dependencies (2)
  • documentation (1)

Top Pull Request Labels

  • enhancement (6)
  • help wanted (2)
  • hardware (2)
  • bug (2)

Package metadata

proxy.golang.org: github.com/dalathegreat/battery-emulator

proxy.golang.org: github.com/dalathegreat/Battery-Emulator

Dependencies

.github/workflows/compile-arduino-sketch.yml actions
  • actions/checkout v4 composite
  • arduino/compile-sketches v1 composite

Score: -Infinity