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open-hardware-bms The Open BMS Project is an open source and open hardware project with the goal of developing a reliable, rugged, high quality BMS (Battery Management System) for lithium-ion batteries, available for everyone. While there are many commercial suppliers of BMS, few are suitable for home builders, amateurs, student teams, prototyping, and other small-scale users with limited resources. The commercial products are typically expensive, and the design and software is typically proprietary. В переводе с английского, BMS (Battery Management System) – система управления батареей. Понятие слишком широкое, поэтому оно описывает почти все устройства, так или иначе обеспечивающие корректную работу аккумуляторов в данном устройстве, начиная с простых плат защиты или балансировки, заканчивая сложными микроконтроллерными устройствами, подсчитывающими ток разряда и количество циклов заряда (например, как в батареях ноутбуков). Li-ion аккумуляторы наряду с многочисленными достоинствами имеют слабую сторону – это чувствительность к перезаряду выше 4,2 В и разряду ниже допустимой границы в 2,5 В на элемент. Поэтому для безопасного использования литий-ионные батареи снабжаются системами контроля заряда-разряда – BMS платами управления, обеспечивающими защиту и балансировку элементов питания в сборке. Польза от применения БМС.

Work fast with our official Open hardware bms. Learn more. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Skip to content. A scalable, open source battery management system stars 63 forks. Branches Tags. Nothing to show. Go back.

Launching Xcode If nothing happens, download Open hardware bms and try again. Latest commit. Git stats 28 commits. Failed open hardware bms load latest commit information. May 10, Sep 26, Hardware Tested. Jan 29, Open hardware bms 18, Balancing operational. Feb 3, View 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 cost improvements Safe - in going with reliable, I don't want this thing to 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 within this project The Master board. The MicroMaster board. This one contains an atmega with current sensing and little else. This board is meant as a lower cost alternative open hardware bms the regular master board. The daughter cell management board. It contains the 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 of the system with an 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 Open Hardware Bms Bmsnp 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 open hardware bms supply 20ma 2 dedicated current sensor inputs. The voltage on this open hardware bms rail is also monitored via a voltage divider. This is for controlling contactors, fans, etc 1 connector for a precharge circuit. Outputs for 1 small relay and a protected adc open hardware bms 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 open hardware bms If a cell always needs a certain amount of energy removed while charging the board will pre-emptively balance the cell. It could probably be made more efficient though Manually control system outputs Dataloggging, including current, cell voltages, and recording of total time open hardware bms balance resistor has been on for each cell. Cell resistance estimate - use amperage draw and cell voltages to estimate cell resistances.

License GPL 3. About A scalable, open source battery management system Resources Readme. Releases No releases published. Packages 0 No packages published. Contributors 2 Teslafly rzr Philippe Coval.

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Battery management systems (BMS) solutions for automotive and industrial applications including 12 V, 48 V, high-voltage and battery pack monitoring applications. They are optimized in hardware and software for functional safety implementation for up to ASIL D safety levels. Hardware We aim to provide you with the solutions needed to get the most from your projects. Please feel free to ask us for advice on any special needs you have to complete the task. May 10,  · This project aims to create an open source, scalable Battery management system for use in just about anything with more than 4 lithium batteries. (and currently up to 96 cells without a second master board) It aims to be as open source as possible so ideally all .

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