AEK-POW_BMS63EN cell balancing manually adjust

[trishuynh]

Dear community members,

There are multiple functions related to cell balancing in AEK-POW_BMS63EN_id. However, when I tested, none of them work. Here is my main code based on the "SPC58EC - AEK_POW_BMS63EN_SOC_Estimation_14Cells_GUI application for discovery" example. Could anyone experts give me documents about how to manually use cell balancing of this board? and explain detail how cell balancing of AEK-POW-BMS63EN works?

This is my code:

And this is the results: Cells balancing still turn on

[ATROI]

Hi Trishuynh,

It seems you entered in a faulty condition; this may be related to some poorly connected wire. I invite you to follow these steps:

1. Switch OFF C4MLIT1
2. Disconnect your AEK-POW- BMSHOLD connector
3. Check if the Jumper JP1 of AEK-POW-BMESEN is inserted as in the picture below (pins 2-3)

1. Check the wirings between AEK-BMS and AEK-ISOSPI, making also sure that ISOSPI VDD and VIO pins are supplied with 5V.

1. Check NTC connection
2. Connect your sensing resistor as follows:
   
3. Reconnect BMS cable to your battery pack
4. Switch ON C4MLIT1

I also suggest to take a look to UM3185 for a better understanding on how to use our BMS boards.

The Demo we suggest to use with the new library (BMS_CHAIN) is SPC58EC - AEK_POW_BMS63EN_SOC_Est_SingleAccess_CHAIN

Thanks, 

AutoDevKit Team.

[trishuynh]

Dear ATROI,

Thank you so much. Back to the balancing of the new driver, I found out that only two value that can change the balancing status of the system (in the void AEK_POW_BMS63CHAIN_app_parserData(void)):

AEK_POW_BMS63CHAIN_app_dataChain[AEK_POW_BMS63CHAIN_chainidx].AEK_POW_BMS63CHAIN_nodeData[AEK_POW_BMS63CHAIN_devidx - 1].AEK_POW_BMS63CHAIN_Pack_Enable_Bal = 1;
AEK_POW_BMS63CHAIN_app_dataChain[AEK_POW_BMS63CHAIN_chainidx].AEK_POW_BMS63CHAIN_nodeData[AEK_POW_BMS63CHAIN_devidx - 1].AEK_POW_BMS63CHAIN_Pack_Enable_Discharge = 0;

When I changed the AEK_POW_BMS63CHAIN_Pack_Enable_Bal to 0, the balancing for each cell turned off to 0. 

When I changed the AEK_POW_BMS63CHAIN_Pack_Enable_Discharge to 1, the balancing for each cell turned on to 1.

However, All the below function seems do not works in any situation or I do not know how and when to put it in the code.

//Set Balancing Mode of Node of BMS Chain.

- AEK_POW_BMS63CHAIN_node_setBalMode

//Enable Balancing Cell of Node of BMS Chain.
- AEK_POW_BMS63CHAIN_node_enableBalCell

//Disable Balancing Cell of Node of BMS Chain
- AEK_POW_BMS63CHAIN_node_disableBalCell

//Set Balancing Start of Node of BMS Chain.
- AEK_POW_BMS63CHAIN_node_setStartBal

//Set Balancing Stop of Node of BMS Chain.
- AEK_POW_BMS63CHAIN_node_setStopBa

Could you please guide me by providing some example code to manually control balancing of each cell (turn on, turn off).

Thank you for your attention to this matter. I appreciate your assistance in clarifying this detail.

Best regards,

Trishuynh.