I recently purchased a JK-B2A24S20P BMS to manage some LG li-ion modules pulled from an Audi E-Tron. @VintageVolts posted a thread a while back regarding these modules (https://www.diyelectriccar.com/thre...3s4p-4ke-915-591-j-and-4ke-915-591-h-battery-modules-information-thread.207411/)
In attempting to connect the cell leads, I realized that the cell taps on the battery read in a cumulative manner. For example, cell tap 1=4V, cell tap 2=cell 1 + cell 2's 4V, cell tap 3=cell 1+cell 2 + cell 3's 4V. Is there a way to configure the BMS to still be able to read these as individual cell values by subtracting away the previous cells as needed? Is this BMS not capable to working with these modules? Or can I just put a certain value resistor in cell 2 and cell 3 taps to reduce the voltage seen by the BMS? Or should I just setup the BMS as an 8S and only manage the 8 modules I'll be using in this battery pack? Any advice anyone can provide is appreciated! I'm stopped dead in my tracks till I get this figured out.
In attempting to connect the cell leads, I realized that the cell taps on the battery read in a cumulative manner. For example, cell tap 1=4V, cell tap 2=cell 1 + cell 2's 4V, cell tap 3=cell 1+cell 2 + cell 3's 4V. Is there a way to configure the BMS to still be able to read these as individual cell values by subtracting away the previous cells as needed? Is this BMS not capable to working with these modules? Or can I just put a certain value resistor in cell 2 and cell 3 taps to reduce the voltage seen by the BMS? Or should I just setup the BMS as an 8S and only manage the 8 modules I'll be using in this battery pack? Any advice anyone can provide is appreciated! I'm stopped dead in my tracks till I get this figured out.
