So how do we get the texas instrument bms?

maydaverave

10 kW
Joined
Jan 13, 2009
Messages
542
How do we get them and use them? $2.70 bulk price seems great for a 10 cell stackable bms. I have just begun playing with lipo and this fall when my job picks up I want to play some more and build a couple little projects for my friends. Since they will mostly being using them drunk and high at music festivals I need them to be idiot proof so a bms is a must. If possible a plug and play lipo bms would sell like hotcakes. I can dream :D
 
Oh yeah here's the link http://www.prnewswire.com/news-releases/ti-introduces-industrys-first-single-chip-battery-management-device-for-power-tools-and-e-bike-applications-125738623.html
 
Not judging on the drunk and high part, but you can get a DUI on a bike, skateboard, horse, camel ect. A quick way to ruin your life esp if you live in Cali 8)

Try to stick to the good old Sole Train (walking) while under the influence at public events.


In response to getting them it looks like they have free samples here http://focus.ti.com/docs/prod/folders/print/bq77910.html#samples

Edit: Backordered till Sept.
 
E-bike4life said:
Not judging on the drunk and high part, but you can get a DUI on a bike, skateboard, horse, camel ect. A quick way to ruin your life esp if you live in Cali 8)
To late for that :lol: dui's and drug charges are par for the course in my line of work. You should be back stage at a rap concert or hippie festival 8)
 
maydaverave said:
Oh yeah here's the link http://www.prnewswire.com/news-releases/ti-introduces-industrys-first-single-chip-battery-management-device-for-power-tools-and-e-bike-applications-125738623.html

From your link:
Tools and support
TI offers a variety of tools and support to speed the implementation of the bq77910 family of devices:
bq77910EVM-001 evaluation module: http://www.ti.com/bq77910evm-pr.
bq77908-10-GUI-SW evaluation software: http://www.ti.com/bq77910guisoftware-pr.

$49 gets you the eval module (link above). + another $49 for the USB interface (link below).
https://estore.ti.com/USB-TO-GPIO-USB-Interface-Adapter-EVM-P960.aspx
 
The LVC cutoff only goes up to 2.9 volts... nice feature set, except for that limit IMHO.
 
Guys, the bq77910 is in stock and can be ordered from WPI (in Asia).
Or, use the incredible bq78PL116/bq76PL102 combo, available from WPI and Digikey/Mouser.
 
2.9V LVC ??? :(

Internal balance current is only 50mA, 100-150mA external.
But you can set it to be balancing all the time, upto a user defined time limit. (1,2,4,8 hours)

http://focus.ti.com/docs/prod/folders/print/bq77910.html
http://focus.ti.com/lit/ds/symlink/bq77910.pdf
 
Agree, I got all excited, ordered some samples and was going to order the demo board... then saw the 2.9 volt LVC... I need it to go up to 3.5 to 3.6 volts. The timer delay on just about every parameter is the nuts though!
 
Hi, this is a old tread, but I wonder how it went?

These TI chips isnt breadboard friendly, I figuring to use it as a deadbug (upsidedown) on a experientcard? Because the chip cost around 3$, but demobord 170$!

Or any known BMS manufacturer that uses these chip, so we (as consumer) can pickup a usable product?
(the chip have IC2 communication, so I guess one may get HID feedback? -and not be a blackbox as most BMSs)

I was wondering the other day "Any BMS with a manual?"
https://endless-sphere.com/forums/viewtopic.php?f=14&t=116575
(noo satisfying answer yet)
 
No answer yet, here ether?

TI nowadays also have a wireless solution for BMS:
https://training.ti.com/comparing-wired-vs-wireless-solutions-automotive-battery-management-systems-0
How vivacious is that?

Il like the some specs though, 6s-15s scalable, and thereon daisy.

Il saw a Youtube -video where someone reused Tesla -battery, including its BMS:
https://youtu.be/7zOeBYIeAkg?t=940
(somewhere at the end of this video, they mention they spent 1-2 weeks for programing, for this converted EV Porsche)
 
The folks in this forum who aren't happy with a cheap, basic, poorly documented BMS, nor with a big, expensive, full-featured BMS, simply don't use BMS. Other options include active balance boards or direct cell monitoring.

If none of that floats your boat, well you'll probably need to cook up your own just-right BMS that nobody else seems to need.

I've gotten to where I'm happier with active balancing and designing my whole bike system not to exceed the battery's limits. But I still use packs with basic BMS for other people's e-bike conversions.
 
Chalo said:
The folks in this forum who aren't happy with a cheap, basic, poorly documented BMS, nor with a big, expensive, full-featured BMS, simply don't use BMS. Other options include active balance boards or direct cell monitoring.

If none of that floats your boat, well you'll probably need to cook up your own just-right BMS that nobody else seems to need.

I've gotten to where I'm happier with active balancing and designing my whole bike system not to exceed the battery's limits. But I still use packs with basic BMS for other people's e-bike conversions.

Jepp, Il consider making my own BMS. Found a good link:
https://community.openenergymonitor.org/t/diy-lithium-battery-balancer-and-monitoring-bms/5594/9
But they gabbling multiple components for every channel, as all those hongkong-blackboxes. There used to exist "analog multiplexers", dono if say TMUX810x will fit?
 
That link is 5 years old and the boards & components are pretty bulky. Search github for BMS, you'll find a bunch.

Chalo, what active bms are you using?
 
Jrbe said:
Chalo, what active bms are you using?

Not a BMS per se, but only a balance board:
https://www.ebay.com/itm/184869799584

The power supply I use limits maximum voltage and charge rate, and the controller I use limits discharge rate and minimum voltage. Cell balancing is the only critical task left to do.
 
Chalo said:
Jrbe said:
Chalo, what active bms are you using?

Not a BMS per se, but only a balance board:
https://www.ebay.com/itm/184869799584

The power supply I use limits maximum voltage and charge rate, and the controller I use limits discharge rate and minimum voltage. Cell balancing is the only critical task left to do.

Thanks for the link!
 
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