Battery Management

Browse by Tags

Battery Management

Welcome to the Battery Management Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".

Tags
You have subscribed to this tag. To view or manage your tag subscriptions, click here.   Close
You have unsubscribed from this tag. To view or manage your tag subscriptions, click here.   Close
You are currently viewing:
bq78pl114s12
Related Posts

  • Forum Post: Re: UPS-like application of bq78PL114 ?

    nancy!
    Hi Alex, There should not be any issue using the bq78PL114 in a 12S UPS application. We do not provide a cell balancing status over the SMBus. I hope this helps. Regards, Nancy
    on May 21, 2009

  • Forum Post: N-channel MOSFET switches with bq78pl114S12 ?

    AlexD
    I'd like to design some charge pump circuitry to drive N-channel MOSFETs instead of P-channel, proposed in the reference design. Info on CHG/DSG pins behavior in the datasheet is insufficient to do so. Any help welcomed!!!
    on Jun 1, 2009

  • Forum Post: BQ78PL114 Coulomb Counting

    Rick12368
    The datasheet for the BQ78PL114 indicates the coulomb counter is accomplished using an 18-bit sigma-delta ADC. What is the conversion rate of the ADC; or more specifically, if the current is a dynamic signal, what will be seen or not seen by the counter?
    on Jun 4, 2009

  • Forum Post: Re: bq78PL114 Powerpump design

    PerBear
    PerBear Does it exist any description on how to design the powerpump external circuitry, or is the recommended procedure to do a circuit simulation? I have not received any feedback on this so it might be wrong forum, but I try once more: In SLYT322 a switching frequency of 200kHz and duty...
    on Jul 25, 2009

  • Forum Post: Re: bq78PL114- which chemistry file to use with LiFepo4?

    PerBear
    reagle Which chemistry ID would you suggest using for bq78PL114 with large LiFePo4 cells , such as PSI or Headway 38120S? These are not nanophosphates, so I am guessing chemistry 400 (A123) is not correct? Hi Reagle, I know nothing about PSI but A123 26650 and HeadWay 38120S has both 8mohm impedance...
    on Aug 31, 2009

  • Forum Post: Temperature sensors on bq78PL114S12

    PerBear
    On the bq78PL114 the four inputs for external temp sensors can be multiplexed for up to 12 external temp sensors. On the -S12 version, this oportunity has been removed and it is only possible to use four external temperature sensors. Additional sensors must be connected via slaves (bq76PL102 or bq76PL104...
    on Sep 2, 2009

  • Forum Post: Re: Doubts related to bq78pl114 configuration files .tmap and .aux.

    WM5295
    Yes, enter a value of 1 in the aux file and in the formula. The terminology for the device for 4 series cells in parallel for example would be 4 series cells and 1 parallel cells, the pack would commonly be described as 4S1P. The parallel count for the device is 1 although there is nothing extra in parallel...
    on Sep 5, 2009

  • Forum Post: bqWizard questions in conjunction with bq78pl114

    Ada
    Hi, i´ve got an issue with reading cellvoltage. In bqWizard cells window are the correct values shown, but with the SBD Read/Write Utility "wrong" values for same cell are shown, see picture. Is there any conversion factor needed? (Please visit the site to view this file) Is there...
    on Oct 2, 2009

  • Forum Post: Re: My application has a large current spike causing bq78PL114 EVM to trigger HSC (Hardware Short Circuit) - make it stop!

    DogZapper
    Correction to my previous post: Hardware Short Circuit Threshold = 63, Hardware Short Circuit Recovery Time = 8 seconds, Hardware Short Circuit Time = 31 Using bq78PL114 firmware on EVM with 5mohm (total) current sense resistor, with threshold at 63, HSC current should trip (57 to 66 amps)…...
    on Oct 4, 2009

  • Forum Post: Re: Battery management for >12s Li-Ion

    WM5295
    The bq78PL114 with the S12 firmware will support up to 12 cells as noted. The part does not have features to make stacking multiple systems convenient.
    on Oct 8, 2009

  • Forum Post: Re: My application has a large current spike causing bq78PL114 EVM to trigger HSC (Hardware Short Circuit) - make it stop!

    WM5295
    The expanded current capability with the S12 firmware and the 1 mOhm sense resistor seems like a better approach for your application. Some things to watch for when changing to the S12 firmware, see the datasheet and technical reference manual for difference details: Sense resistor value needs...
    on Oct 8, 2009

  • Forum Post: BQ78PL114 FIRMWARE

    Dag Lundstrom
    Hi, I just received the EVM for BQ78PL114 and played around with it. I then (mistake) changed the FIRMWARE to the S12 (FW5000) version. How do I change it back to the FW4452 version? The EVM files did not seem to include a file that can be used to revert back to the original sw. Regards Dag
    on Oct 24, 2009

  • Forum Post: Re: Battery management for >12s Li-Ion

    Dag Lundstrom
    What would you suggest to use for a 16cell stack? Regards Dag
    on Oct 24, 2009

  • Forum Post: bq78PL114 firmware change to bq78PL114s12, voltage calibration does not work for 5 cells or more

    Andreas S
    since i changed the firmware of the bq78pl114 to s12 (fw 5000), the calibration of the 5th cell (bq76pl102) does not work any more. The out of the box calibration of bq76pl102 is not good enough (100mV offset at 4.0V) to avoid calibration. Is there a solution? Where can i get the old firmware...
    on Dec 1, 2009

  • Forum Post: Re: BQ78PL114 fuse location & LED questions

    PerBear
    Excellent, thanks to both of you for answers regarding the LEDs! Regarding the chemical fuse: It seems that the largest rating available is 15A and this is unfortunately too small for my application. I think I will instead use the 40A rated Littlefuse "456" that handles 60V DC within UL spec...
    on Dec 2, 2009

  • Forum Post: bq78pl114 with bq76pl102 battery pack assembly cell contacting order

    Andreas S
    The input of the bq78pl114 voltage measurement should not exceed 5V. If the battery pack assembler has to connect the battery to the pcb, does he has to take care for the order he makes the contacts to the cells, for example: most negative first, than contact to first cell, than second cell ... What...
    on Dec 2, 2009

  • Forum Post: Re: bq78pl114 with bq76pl102 battery pack assembly cell contacting order

    PerBear
    According to the 8S EVM manual, point 6.5: Cell connections must be made in sequence from lowest to highest voltage as described in the following steps for the EVM: Connect the high-current wire from the lowest potential (bottom) of the battery cell stack to the EVM BATT- terminal Connect...
    on Dec 3, 2009

  • Forum Post: Re: bq78pl114 with bq76pl102 industrial calibration without bqwizard

    Andreas S
    Dear Jim, Thank you for your fast answer. i just took a new pcb into operation. I pushed the 76PL102 calibration into the 78PL114 (not 78PL114) using the "calibration transfer bit" and a calibration/relearn sequence. The result was obvious, the cell 5 voltage is nearly exact. Reading...
    on Dec 3, 2009

  • Forum Post: bq78pl114 writing to BatteryMode() for broadcasting fails

    Andreas S
    BatteryMode() bit 14 (charger_mode )can not be set successfully via bqwizard. This bit defines, wether the charging voltage and -current is broadcasted to the SMbus or not. If writing to the SBS standard parameter 03, reading gives old value back, no change of parameter. Within specification, this...
    on Dec 9, 2009

  • Forum Post: Re: bq78pl114 writing to BatteryMode() for broadcasting fails

    Andreas S
    Hello Jim, the data-sheet of bq78pl114 specifies the compatibility with Smart Battery System (SBS) Specification 1.1 requirements (page 1, 16) . This data-sheet specifies also the R/W word possibility of the Battery_Mode (page 22). SBS 1.1 specifies the same. I think, there is a deviation between...
    on Dec 11, 2009

  • Forum Post: Re: Firmware/config cause for incorrect bq78PL114S12 current reading?

    Jim M15252
    Start with FW5000. Set your .tmap file for the number of series/parallel cells. These can be found in the bqWizard install directory under bq78PL114S12. After you select the 0.001 Ohm resistor using Hardware Configuration Register bit 10=1 and 11=1, do a relearn/initialize command to make change...
    on Dec 22, 2009

  • Forum Post: Re: bq78pl114 writing to BatteryMode() for broadcasting fails

    Jim M15252
    Andreas -- Only Bit 15 of BatteryMode() is writable. The bq78PL114 datasheet should be changed in the future to reflect this. Technical Reference Document SLUU330A accurately describes the implemenation of this register on pages 45 & 68. The default value of the BatteryMode() register is hex 0x6001...
    on Jan 4, 2010

  • Forum Post: Re: USB-TO-GPIO interface

    Achmed Giesler
    Thanks for your help. The problem is that I cannot upload the software. The help fie states the following: Run bqWizard 5) To load new firmware - Go to Bootstrap Loader dialog box: Main menu --> Utilities --> Bootstrap Loader - Click on "Select File" button The problem...
    on Jan 7, 2010

  • Forum Post: Re: Best gas gauge for widely varying loads?

    Jim M15252
    ! ! CORRECTION ! ! Statement about impedance learning is updated. If NDI calculations occur, then the impedance values of the cells will be updated. 2) Aux files are dependent on cells and pack construction. Impedance values are not learned over time from some nominal value to whatever your specific...
    on Feb 3, 2010

  • Forum Post: Re: File needed for bq78PL114S12 .aux log file creation not in bqWizard install?

    Jim M15252
    The default .slog file is acceptable to use. It is however important to use the characterize_12cell.dlog for any number of series cells. The characterize_12cell.slog will be included in the next update of the bqWizard.
    on Feb 18, 2010
12345»

All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2013 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use