bq76pl536

Keyvan,

I am moving you to the battery management forum for better support.

Hi,

i have some questions related to bms architecture and chip selection for HEV, been digging the forum for a while, still not have a clear resolution, i appreciated it if someone from TI can talk me on the phone to discuss the solution. or is there a number i can reach?

thx

Chong,

Here is a link to our customer support centers. The specific number depends on what region of the world you are in. http://www.ti.com/general/docs/contact.tsp

HI Alexander,

i talked to one of the support engineer on the link you provide, he is really nice but unfortunately he is not very familiar with the specific application. is it possible you can send me your contact so i can ask a few technical questions privately?

thx

Chong

Chong,

Unfortunately, I do not support this device personally, and do not know anything about it. I will try and find a good contact for you. 

Chong,

Please post your question here on this forum and we will have an engineer help you with it.

HI Alex,

i want to build an EV bms and charging system. i found the the SLAA478 note but it doesn't provide reference for gas gauging and charging system and i wonder if there is a updated version of the note or any other reference designs you can provide.

thx

Chong

There is no update to the referenced application note that includes gas gauging. TI does not currently offer an automotive gas gauge IC. Typically, automotive customers wish to develop their own SoC and SoH algorithms for EV use.The algorithms can be very complex and form significant IP for the automotive OEM.

Hi Stephen,

i have another question regarding to the app note: SLAA478.

assuming i download the battery management program to the msp430 target board using the msp430 FET device, now i want to test the msp430-bq76pl536 setup with my battery pack, how do i communicate between the msp430 and a PC? is there a specific software i need to run on the pc to communicate with the msp430?

thx

Chong

Please refer to the SLAA478 application note for a description of the USB communications to the PC. It is fully described in sections 2.1.3 and 2.1.3.1.

the section doesn't describe whether a MSP-FET is needed to program the target board. if i understand it correctly, it should be:

-to program: connect the target board to pc through the FET

-to test: connect target directly to pc on its usb then use the hyperteminal to communicate

is this correct?

i could have try this if i have the target board in my hand but it still on its way to be delivered. i tried program into a lunchpad msp430 board which doesn't need the FET, it seems can be programmed correctly.

The SLAA478 application note does not provide much detail on the use of the MSP-TS430PN80USB board, but assumes that the user will refer to the MSP430F55xx 80-pin Target Board product information (here). 

The FET tool is used to program the board, though if you have another way to program then that should be ok. The PC connects to the USB header on the MSP-TS430PN80USB board.

Stephen, 

It seems from a few posts that you are knowledgeable about this bq76pl536 module. I am working with the EVM (slightly older version) and am having issue with the device powering on. I have my charged battery plugged into the input on the first IC, and I'm using the Aardvark SPI device to interface with it, but I'm seeing no signs of life from the EVM. There are no LED's that light up, and the computer does not recognize the device. Do you have any suggestions?

Also, I apologize if this post isn't in the correct part of the forum, this is my first time using TI e2e. 

Best, 

Karthik

The EVM is designed to be connected to 3 batteries. To connect just one battery you will need to remove R89, R85-88 and R97-100 and connect the bottom pads of R85-88 and R97-100 to VBAT (bottom pad of R89). A photo is provided below. There are no LEDs.

Steve,

The person who worked on this project before me had it working on one battery (4 cells LFP) without making these changes. Which version of the board does this suggestion pertain to?

Best,

Karthik

The method I have described is the proper way based on the recommended connection of the North communications signals for a single IC in the datasheet.