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Battery Management

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  • Forum Post: li-on for a senior design project

    Dominic Mohrhardt
    Hi everyone, I'm kind of new to this forum, and I wanted to ask the all knowing populous some question. I'm building a small arm 9 pda like device, and I want to power it from a small lithium ion battery. I've asked a couple of questions about li-on and decided I needed a battery management...
    on Apr 6, 2009

  • Forum Post: Re: TPS61200 Solar LiPo charger questions

    MCV
    nanobot9000: Mike I understand the need to monitor the input current levels but what I cannot seem to find is the minimum current required to start-up and then maintain operation. Below is an example how to ensure that the input current does not exceed the cell capacity. The idea is to monitor...
    on Apr 27, 2009

  • Forum Post: The best IC for charging an AA NiMH battery

    Terry Stone
    Which is the best IC for charging a rechargable NiMH AA battery? An AA battery is 1.2V, and between 500 and 1000mAh. The new BQ2000 appears to be the simplest charging IC on the market, and it detects battery chemistry. But, unlike a laptop battery, there is no temperature sensing on a standard AA...
    on Jun 30, 2009

  • Forum Post: bq77pl900, host control mode - does it continue to monitor cell V for under-voltage automatically? Or only when I measure a cell V myself?

    Brian Myers
    I suspect that it continues to monitor the cells at a 50 millisecond sample rate, just as in standalone mode (Otherwise, what's the point of the FS bit in OUTPUT_CONTROL?) A fellow engineer believes that in host-control-mode, it only measure cell V's when the host measures cell voltage at V_OUT...
    on Jul 10, 2009

  • Forum Post: A battery is deform

    Stone Lee
    Hi, gentleman : I have a question about BQ20Z75. I used this battery management IC to control 3-series batteries. But I found here was a battery deforming and I measured its voltage, it was zero. Of course, there were so many reasons can let this battery burn out ( maybe these parameters I set were...
    on Aug 23, 2009

  • Forum Post: 2009 Battery Management Deep Dive - FYI

    BatteryBorne
    We will be hosting our 2009 Battery Management Deep Dive in Dallas the last week of October. Keep your eyes on this thread for further information.
    on Aug 27, 2009

  • Forum Post: BQ24230 battery detect issue

    Pepijn Herman
    Hello all, I am verifying a design with the BQ24230 li-poly power path management IC. The charger works fine but when there is a faulty battery pack or no battery pack at all connected to the sytem the BQ24230 goes limp. There is no power good when the USB is connected and the output voltage...
    on Aug 28, 2009

  • Forum Post: 12vdc BATTERY LEVEL MONITOR

    Mike Barnacastle
    Hello all: Does TI offer a simple battery voltage level indicator for a sealed lead acid battery, 12VDC? We use an off the shelf UB1280 8AH battery in our 'to go kit' sat radio cases, and my source that we obtained a simple battery monitor / level board from has "gone away" Basically...
    on Oct 29, 2009

  • Forum Post: Re: Can bq24005 charge 2 Li-ion cells with an input voltage Vin=5V?

    Chris Rasmussen
    I have an identical need and haven't yet found a good solution. Did you come up with anything? I've wondered about using two bq240xxs and some MOSFETS to connect/disconnect the cells, but it isn't a clean solution.
    on Nov 13, 2009

  • Forum Post: 12 cell Li-Ion in a 3S-4P

    SB36332
    Hi, Just starting to look at this now. We’ve a requirement to build a battery pack for one of our products. The pack is a 12 cell Li –Ion pack, in a 3S-4P configuration , producing a nominal voltage of 11.1 volts with a capacity of 10.4AH by utilizing 2600 mA hour cells. For...
    on Dec 14, 2009

  • Forum Post: Re: Gas Gauge for VRLA & BQ24450

    dMax
    Hi Alfonso, The bq2019 and bq2023 are actually chemistry independent and will work fine with lead acid batteries. The datasheet says "ideal for Li & NiMH" but they can be used for any chemistry. They are simple battery monitors which track voltage, temperature, and count coulombs. It...
    on Jan 14, 2010

  • Forum Post: need a help about backup battery bq24070

    lilly
    Hello! I'm looking for some circuit to monitor the state of battery pack. Tried to search from product list, but it seems a bit to many products and i failed looking for the right one, maybe I was looking in a wrong place. I need a <500ma and 3.3V battery.when power is ON the battery should...
    on Apr 21, 2010

  • Forum Post: BQ27510 Production Code

    Nick Moore
    I have written the firmware to program the BQ27510 from the three page flow chart from Going to Production with the bq2750x. However, every time I read register 0x66 to see if the data=0x00 I get the data to equal 0x37. Does anyone have any idea why this might be happening? I'm thinking maybe...
    on Jun 22, 2010

  • Wiki Page: Battery Management Design Notes

    Foe
    Welcome to the Battery Management Design Notes Wiki FAQs Battery Chargers FAQs Battery Fuel Guages FAQs Other Battery Management Resources Battery Management Products from TI New Products from Battery Management Use the Battery Management Quick Search Tool Application...
    on Aug 6, 2010

  • Forum Post: be24610EVKit

    Charles Pakbaz
    HI, I have purchased the bq24610EVKit and would like to also charge my 12v lead acid battery with this kit. I have connected the battery to J5 PGND, BAT) and have supplied the kit with DC power on J1 (PGND, ACPWR), but there is no activity on the battery am I missing something? all the jumpers...
    on Aug 25, 2010

  • Forum Post: Re: be24610EVKit

    Charles Pakbaz
    Thanks for the reply Wang That helped. I added a 10k resistor to TS-GND and i got 12.1v on the BAT (with R25=490 this was expected voltage) but when I connected the 12v lead acid battery which right now has only 9.5 volts, the Vbat on the charger kit drops from 12.1 to 10.4 volts. Is that a correct...
    on Aug 27, 2010

  • Forum Post: bq24610EVKit Questions

    Charles Pakbaz
    I'm trying to use the bq24610evkit to charge a 12v lead acid 130AH battery. As recommended by TI, I added a 10k resistor to TS-GND and i got 12.1v on the V.BAT (with changing R25=490k) here are my questions: 1. If I'm using a 12V battery, is selection of R25 correct? 1. The battery...
    on Aug 30, 2010

  • Forum Post: Re: why the FCC was updated,but the Qmax was not updated

    fengming zhao
    Sure,I am in Asia,but local support people are sales.They don't understand the theory of the Gas Gauge. So,I must to ask help in the forums. I don't understand why the resistance of battery not update during discharging? The application note tell me that resistance is updated in the Data...
    on Oct 13, 2010

  • Forum Post: why the resistance of battery not update during discharge?

    fengming zhao
    Hello TI: I use the EV2300 test my battery.But I don't understand why the resistance of battery not update during discharging? The application note tell me that resistance is updated in the Data flash after each 11.1% of DOD charge is exceeded. When DOD reaches 77.7%,resistance is updated after...
    on Oct 13, 2010

  • Forum Post: EV2300 and bqEasy setup

    Allen Vandiver
    Hello, I just ordered the EVM starter kit, installed the software and driver. IT detects the EV2300 when I plug it in, but when I start the software, it doesn't autodetect the board (which I believe it is supposed to) and when I select the correct chip (bq20z80 V102) it tells me that the software...
    on Oct 26, 2010

  • Forum Post: ev2300 with 9.59 bqEasy software won't detect

    Allen Vandiver
    Hello, I have version 9.59 of the bqeasy software (downloaded from http://focus.ti.com/docs/toolsw/folders/print/bq20z90evm-001.html ) and I am trying to connect to a bq20z90. I have verified that the chip is actually a bq20z90, though I don't know what version. It won't autodetect the chip...
    on Oct 26, 2010

  • Wiki Page: BQ25010 Battery Pack Operation?

    Charles Mauney
    Q: BQ25010 Battery Pack Operation? 1-can the BQ25010 operates directly from the battery pack without any power on AC and USB? 2-in question #1 mode of operation, does the BQ still monitors the discharging curve of the battery pack? Q: Re: BQ25010 Operation 1) Yes, the converter can operate...
    on Nov 23, 2010

  • Forum Post: bq24026 battery charger ic's system interface voltage level

    Anubhav Gupta
    dear TI, we at sumona consulting are developing a zig bee based USB dongle with battery backup.the battery charger ic selected is bq24026.the interface controller is cc2531zig bee SOC with 3.3V vcc.my query is what is the volatge level of the STAT1 and STAT2 pins.can we directly interface these pins...
    on Nov 24, 2010

  • Forum Post: Internal temp sensor on bq27501

    Roger Yttervik
    Hi I am having problems configuring my bq27501 to use the internal temp sensor. I have left the TS pin floating, however this should not be a problem since I dont intend to use the external sensor. When I look at the Operations config flags, TEMPS flag is red... Does this mean that it is configured...
    on Jan 12, 2011

  • Forum Post: Trouble with BQ20Z75-V180

    Wojciech Rokacz
    Hi. I have problem with BQ20Z75-V180. Before I use the newest version of IC BQ20Z75-V180 I use version BQ20Z75-V160. 1. Software BQEV 0.9.59 does not recognize version IC V180. 2. In software BQEV 0.9.59 I could not find .encr file for this device V180. 3.The Golden File form V160 does not work properly...
    on Jan 13, 2011
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