Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [cell-balancing]

Cell balancing is a method of designing safer battery solutions that extends battery run time as well as battery life.

Cell balancing buys extra run time and battery life article by Texas Instruments
About about lipo balance connectors

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Is there way to construct an 18650 battery pack with built-in balance charging? Or is balancing not very necessary?

I am a DIY enthusiast, especially in electronics. I'm currently building a portable Playstation 2 Slim with an IPS display, so that it would look like a Wii U controller. It's my first large electronic endeavor. However, being portable, I'd need it…
Paolo
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How does a battery balance and protection circuit work?

I am building a 4S LiPo battery pack that I would like to incorporate in a portable speaker project and I need to make sure the batteries will never require maintenance beside replacing them completely in 5 years or so. The batteries I am using are…
Bogdan
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li-ion balancing with zener diodes

Would there be any potential problems with the below implementation of a rudimentary li-ion balancing/(overcharge protection) circuit? Would a resistor need to be in series with the zeners? simulate this circuit – Schematic created using CircuitLab
Daniel Caoili
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What type of active cell balancing is used in EV's?

I know that active balancing is preferred over its passive counterpart but what active balancing techniques are used in electric vehicles BMS? I also know that switched capacitor and resonant switched capacitor topologies are expensive but passive…
Shamurov
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Modify lithium battery pack balancer

This is the lithium battery pack balancers available to me: As Robojax has extensively explained in this video, this module is capable of balancing batteries with 67mA current (4.2v/62ohm) that is way too slow for my application because my charging…
AKTanara
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Is there any scientific proof that passive cell balancing can improve the life of a battery pack?

Passive balancing usually works only in the charging end area, i.e. when the cells of a battery pack are almost fully charged. In the case of those cells that have already reached the end-of-charge voltage, a resistor is connected in parallel by the…
Medi1Saif
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Charge/Discharge a Battery Pack Wired as a Segregated Paralleled Series

This is my first post on EE, so I'll try to be as simple but detailed as I can. I have a 12S10P pack that I want to segregate into a 6S4P + 6S4P, 6S3P + 6S3P, 6S3P + 6S3P for "cautionary" LiIon balance charging. (My charger only goes up to 6S…
heilstalin
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Battery Pack Management: need to balance during discharge?

I'm looking into the fault detection and monitoring subsystem of out unmanned vehicles (airborne and ground-based) batteries. We employ LiPo-battery packs of various configurations which are charged by cell-balancing chargers. Only properly charged…
Arne
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What kind of MOSFET gate driver is required for cell balancing in BMS?

I want to drive these MOSFETs which will be in the cell-balancing circuit that is part of the BMS. What kind of topology for gate drivers can be suitable for this system?
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PWM Controlled Resistance vs Resistor to minimize heat dissapation

I have a low-ohm resistor (7.5 ohms) connected to a MOSFET used for passive charge balancing. It is generating a lot of heat on my PCB. I can apply a duty cycle to the switching which somewhat combats the heating, but slows my charge balancing. If a…
cs_eng_516
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What is the best way to balance supercapacitor cells at 700mA peak charging current

So I want to charge a stack of six series-connected super capacitors from a small 10W solar panel. The part number of the capacitors is TPLH-2R7/12WR10X30. https://www.tecategroup.com/products/data_sheet.php?i=TPLH-2R7/12WR10X30 The part number of…
user4574
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Nickel battery balancer

TLDR: The question is about retrofitting a balancer to the Ni-MH battery of an existing appliance (that doesn't trickle charge the battery), preferably in the way that will not require frequent access to the battery. Changing the charge/discharge…
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Why bq76940 cell0 has two capacitors

I'm exploring bq76940 datasheet. I've found such typical scheme for cells connection: Why VC5-VC4, VC4-VC3, VC3-VC2, VC2-VC1 pairs have only one capacitor and VC1-VC0 pair has two capacitors? What is the purpose of all these elements in this…
ft232r
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Multi-cell Li-ion battery charging

I am trying to make a charger circuit for a battery pack consisting of 6 lithium ion batteries (cells) in series. Many battery charger ICs support multi-cell charging but do not provide cell balancing or protection. How should I connect the charger…
Yosry
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LiFePO4 cells - self-balancing in series or parallel?

I am building various banks / packs from individual prismatic LFP cells, nominal 3.2V each. New and pretty large, 60-400AH. I have a good power supply, charge each cell independently, Bulk stage CC to a standard voltage setpoint, then hold CV Absorb…
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