bluetooth BMS?

Batteries, Chargers, and Battery Management Systems.
EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 22 2020 5:33pm

thundercamel wrote:
Dec 22 2020 2:11pm
EbikeAus wrote:
Dec 22 2020 2:57am
Hi all

I'm having an issue with my 4s 80 amp Lifepo4 bms mounted on 4s of 60ah CALB cells in a DIY power case I built.

When I charge with my 20 amp wall plug charger, the xiaoxang software dies.

It all works perfectly while discharging. My loads are up to 50 amps.

Would appreciate any input ✌
Is the BMS hooked up with separate charging and discharging wires, or just one wire for both? Got a link to the BMS you bought?
Hi

Yes I have separate cables for charge and discharge.

I'll try upload some images and link

https://imgur.com/a/NSGH70m

https://imgur.com/a/e8hI5YG

https://imgur.com/a/IBRUiUl

Thanks
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May all your batteries be fully charged and perfectly balanced :P

EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 22 2020 6:42pm

vipster76 wrote:
Jul 06 2017 6:29pm
where did you buy the bms from :) i wouldnt mind getting my hands on one!
Aliexpress mate
I'd recommend it, apart from this issue I'm having ✌
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EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 26 2020 6:41am

Does anyone have any clue, or experienced this issue?
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eee291   100 kW

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Re: bluetooth BMS?

Post by eee291 » Dec 26 2020 8:39am

you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here

EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 27 2020 1:31am

eee291 wrote:
Dec 26 2020 8:39am
you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here
Thanks for the reply! I will do that.

I tried another variation of the app (see below)

https://imgur.com/a/ISwqPDl

At least this one shows charging but only has one screen with limited data. No individual cell voltage, which I like to have. (See below)

https://imgur.com/a/hqdoqpC

https://imgur.com/a/ZQOWS5K

I will do some more tests as you suggested.
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May all your batteries be fully charged and perfectly balanced :P

Dishwashertaco   10 µW

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Re: bluetooth BMS?

Post by Dishwashertaco » Dec 27 2020 1:27pm

Greetings guys,
Just started having issues with my 14S7P battery with a JBD SP15S001 v.1.6 BMS (60A v.). Had issues finding the bluetooth module (no blue light) and my electric scooter cut power as soon as i would accelerate hard.
Decided to open up the sucker, and found a burnt resistor (?) on the board. Have attached a photo of how it supposed to look like, and mine :flame: Unable to identify the marking, either its "10E" or "301" depending on the orientation you read it.

So my question is, does anyone know what this resistor does? What would cause it to fail?

Thanks in advance for any input!

Edit:
When further thinking about this, it might be worth mentioning that the 14awg charge cable in addition to a 14awg cable supplying a scooter horn was routed right on top of the resistor (inside the heatsink-casing) to save space. Max charge amperage is 7A and the horn is supposedly not using more than 0,2A (which i have not tested). But with 14awg and the amperages mentioned, heat transferred from the wires really shouldnt interfere with the resistor lying underneath? Charging and discharging are not done at the same time, so the resistor shouldnt heat up further from contact with the charge wire?
Attachments
burnt resistor.jpg
burnt resistor.jpg (5.09 MiB) Viewed 398 times
sp15s001 marked resistor.jpg
sp15s001 marked resistor.jpg (3.9 MiB) Viewed 398 times

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eee291   100 kW

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Re: bluetooth BMS?

Post by eee291 » Dec 27 2020 3:39pm

EbikeAus wrote:
Dec 27 2020 1:31am
eee291 wrote:
Dec 26 2020 8:39am
you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here
Thanks for the reply! I will do that.

I tried another variation of the app (see below)

https://imgur.com/a/ISwqPDl

At least this one shows charging but only has one screen with limited data. No individual cell voltage, which I like to have. (See below)

https://imgur.com/a/hqdoqpC

https://imgur.com/a/ZQOWS5K

I will do some more tests as you suggested.
You can swipe from the left, look for the cell voltages tab
and since it's not crashing while charging now that pretty much leaves just your phone I guess
could be fixed in the next update or not :confused:

EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 27 2020 10:53pm

eee291 wrote:
Dec 27 2020 3:39pm
EbikeAus wrote:
Dec 27 2020 1:31am
eee291 wrote:
Dec 26 2020 8:39am
you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here
Thanks for the reply! I will do that.

I tried another variation of the app (see below)

https://imgur.com/a/ISwqPDl

At least this one shows charging but only has one screen with limited data. No individual cell voltage, which I like to have. (See below)

https://imgur.com/a/hqdoqpC

https://imgur.com/a/ZQOWS5K

I will do some more tests as you suggested.
You can swipe from the left, look for the cell voltages tab
and since it's not crashing while charging now that pretty much leaves just your phone I guess
could be fixed in the next update or not :confused:
No, there is no individual cell voltage when you swipe left with this version. As I said there is a single page of data.
My phone is a fairly current Samsung galaxy with latest updates, so don't think that's it either. 😕
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serious_sam   10 kW

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Re: bluetooth BMS?

Post by serious_sam » Dec 28 2020 1:22am

EbikeAus wrote:
Dec 27 2020 10:53pm
No, there is no individual cell voltage when you swipe left with this version. As I said there is a single page of data.
I'm running V3.1.1013. I would imagine similar to your version V3.1.1014.

There's a menu button on the top left. click that. Then select "Battery state". Then select "battery voltage".
01.jpg
01.jpg (50.89 KiB) Viewed 371 times
02.jpg
02.jpg (55.3 KiB) Viewed 371 times
03.jpg
03.jpg (72.43 KiB) Viewed 371 times

EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 28 2020 5:15pm

serious_sam wrote:
Dec 28 2020 1:22am
EbikeAus wrote:
Dec 27 2020 10:53pm
No, there is no individual cell voltage when you swipe left with this version. As I said there is a single page of data.
I'm running V3.1.1013. I would imagine similar to your version V3.1.1014.

There's a menu button on the top left. click that. Then select "Battery state". Then select "battery voltage".
01.jpg
02.jpg
03.jpg
Similar but not the same.

There is no further data from front screen

https://imgur.com/a/Xng7aRY

The one I was using has that data but freezes when any charge is applied.


Do you have a link to the one you're using please?
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serious_sam   10 kW

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Re: bluetooth BMS?

Post by serious_sam » Dec 28 2020 5:47pm

EbikeAus wrote:
Dec 28 2020 5:15pm
Do you have a link to the one you're using please?
After you download it, remove the .txt extension.
Attachments
xiaoxiangprotection-3.1.1013.apk.txt
(5.42 MiB) Downloaded 39 times

EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 28 2020 5:58pm

serious_sam wrote:
Dec 28 2020 5:47pm
EbikeAus wrote:
Dec 28 2020 5:15pm
Do you have a link to the one you're using please?
After you download it, remove the .txt extension.
Thanks for the link but...
I'm not so tech savvy.
What do you mean remove txt extension?
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serious_sam   10 kW

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Re: bluetooth BMS?

Post by serious_sam » Dec 28 2020 7:01pm

After you download the file to your phone, you need to rename it and delete the .txt off the end. Then it will have .apk at the end, and you can run it on the phone which will install it. You may also have to enable "install unknown apps" in the \\settings\apps\advanced\special app access menu.

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serious_sam   10 kW

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Re: bluetooth BMS?

Post by serious_sam » Dec 28 2020 7:04pm

EbikeAus wrote:
Dec 28 2020 5:15pm
Similar but not the same.
There is no further data from front screen
https://imgur.com/a/Xng7aRY
I can confirm V3.1.1014 has had many options removed and is effectively useless.

EbikeAus   100 W

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Re: bluetooth BMS?

Post by EbikeAus » Dec 29 2020 5:25pm

serious_sam wrote:
Dec 28 2020 7:01pm
After you download the file to your phone, you need to rename it and delete the .txt off the end. Then it will have .apk at the end, and you can run it on the phone which will install it. You may also have to enable "install unknown apps" in the \\settings\apps\advanced\special app access menu.
Thanks, I have not had any luck yet will keep trying.
Meanwhile if anyone else has a more straightforward link to this version of software could you please share ✌
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Re: bluetooth BMS?

Post by maSch » Jan 18 2021 6:44am

hi
I have an ANT BMS 24s mounted, all works well, however, I have no luck connecting the "(8) Meter: Copy signal of hall sensors" from my Kelly KLS96601-8080i to the BMS-Display.

I soldered a cable to the back of the Display-Board and connected it to the Kelly Pin8.
EDIT:
found this pic, so it seems I have the correct pin
Smart-Display-Hall Anschluss.jpg
Smart-Display-Hall Anschluss.jpg (46.06 KiB) Viewed 175 times
welded a new cable, still no speed
ANT_BMS_HallConnector.jpg
ANT_BMS_HallConnector.jpg (72.81 KiB) Viewed 175 times
might it be the wrong Hall connector from my Kelly? I definitely connected it to PIN8, but may it need the signal from the spare hall sensors?
a bit frustrated..

Tantalum   1 µW

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Re: bluetooth BMS?

Post by Tantalum » Jan 21 2021 3:16pm

Dishwashertaco wrote:
Dec 27 2020 1:27pm
Greetings guys,
Just started having issues with my 14S7P battery with a JBD SP15S001 v.1.6 BMS (60A v.).
Hi, Not sure if it is too late but...

I have the same board, The resistor is 301(300Ω).
It's common for chinese manufactures to put a resistor in series with the Linear Regulator to share the load.
That Linear regulator supply's 3.3v to the microcontroller.
As the resistor drops the voltage by dissipating the power as heat, I would suspect that the silicone wire has insulated the resistor causing it to over heat.
These resistors are pushed quite hard in this configuration(see, every cheep bldc controller) and the little insulation might have been the tipping point.
Hope this helps.

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