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open-hardware-bms-bmsq GitHub - Teslafly/OpenBMS: A scalable, open source battery management system

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May 10, Sep 26, Hardware Tested. Jan 29, Jan 18, Balancing operational. Feb 3, Opeen code. Intro This project aims to create an open source, scalable Battery management system for use in just about anything with more than 4 lithium batteries. Master board may bump that up for smaller systems. Reliable - Even though a goal is to keep costs low, reliability should not be unnecessarily decreased for small open hardware bms bmsq improvements Safe - in going with reliable, I don't want this thing oopen start any fires or cause any damage.

I want it to prevent any possible catastrophes associated with using such a power dense energy source. Integration with a larger system could possibly be done with ladder logic programming. Multi chemistry - Can monitor and balance almost anything with "lithium" in the name. Possibly even super-capacitor banks Boards There are several boards contained open hardware bms bmsq harddware project The Master board.

The MicroMaster board. This one contains an atmega with current sensing and little else. Bmss board is meant as a lower cost alternative to the regular master board.

Bmq daughter cell management board. It contains open hardware bms bmsq voltage measuring ic and balancing resistors. The bus termination board. This one does precious little except ties the datapins of the top slave board together and allow activation Open Hardware Bms Bmsl of the harddware with bsmq optoisolator.

Master Features plannned Teensy 3. Input voltage sensing Switching voltage regulator to bring pack voltage down to v when system is on for auxiliary functions. These can be used to control a contactor, precharge circuit relay, fan, etc.

Opto isolators for controlling charger or communicating to voltage shifted masters. This is convenient but allows no SD card or indicator leds as the ATAN can only supply 20ma 2 dedicated current sensor inputs. The voltage on this auxiliary rail is also monitored via a voltage divider. This is bmw controlling contactors, fans, etc 1 connector for a precharge circuit.

Outputs for 1 small relay and a protected adc input for a controller voltage monitoring circuit. Extremely low power when asleep. Heatsinking is probably needed at this level for full balancing current on all cells. Predictive cell balancing?

If a cell always needs a certain amount of open hardware bms bmsq removed while charging the board will pre-emptively balance the cell.

It could Open Hardware Bms Version probably be made more efficient though Manually control Open Hardware Bms Bmsnp system outputs Dataloggging, including current, cell voltages, and recording of total time the balance resistor has been on for each cell. Cell resistance estimate bjs use amperage draw and cell voltages to estimate cell resistances. License GPL 3. About A scalable, open source battery management system Oopen Readme.

Releases No releases published. Packages 0 No packages published. Contributors 2 Teslafly rzr Philippe Coval. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.

Dec 09,  · 2) Supply Air Damper –Open Position. 3) Outdoor Air Damper –Open Position. 4) Return Air Damper – Open Position. 5) Once the above conditions are satisfied, AHU is enabled to start in Auto mode or using a plant enable button on the graphics in manual mode by the operator. Once enabled, BMS will automatically command the supply fan to start.

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