Dear Users,
I was looking for a solution for many days regarding this simple problem.
I have two 1200Wh 8S NCM battery packs and I am trying to wire them in parallel in order to double the capacity; the problem is that I am not sure where and when to use a BMS or an active balancer in the wiring solution.
I have attached 3 wiring options in order to check the pros and cons of each one, and I leave these here for you to judge.
The requirements I have are: Semplicity, low cost and effectiveness.
Option 1: Two active balancer and 1 hardware bms.
Balancing is made from the two balancers and BMS just protects battery pack from under/over current and voltage, temp. protection.
Option 2: One Smart BMS and 1 active balancer
The smart bms takes in charge the balacing and all other features, while the other battery pack is simply balanced by a second active balancer.
Since the second battery pack "should" behave like the first one, an active balancer should be the most cost effective option while keeping the full balance of the first pack via BMS.
Option 3: One Smart BMS
The Smart BMS balance cables are connected to both balance connectors of the two battery packs resulting in a "parallel balance cables" connection.
Even though I am not sure if this can be done, or if this can create damages when balancing, this could be the simpler and most effective option.
Please let me know what you think and what could be the best solution for you.
Thank you very much
I was looking for a solution for many days regarding this simple problem.
I have two 1200Wh 8S NCM battery packs and I am trying to wire them in parallel in order to double the capacity; the problem is that I am not sure where and when to use a BMS or an active balancer in the wiring solution.
I have attached 3 wiring options in order to check the pros and cons of each one, and I leave these here for you to judge.
The requirements I have are: Semplicity, low cost and effectiveness.
Option 1: Two active balancer and 1 hardware bms.
Balancing is made from the two balancers and BMS just protects battery pack from under/over current and voltage, temp. protection.
Option 2: One Smart BMS and 1 active balancer
The smart bms takes in charge the balacing and all other features, while the other battery pack is simply balanced by a second active balancer.
Since the second battery pack "should" behave like the first one, an active balancer should be the most cost effective option while keeping the full balance of the first pack via BMS.
Option 3: One Smart BMS
The Smart BMS balance cables are connected to both balance connectors of the two battery packs resulting in a "parallel balance cables" connection.
Even though I am not sure if this can be done, or if this can create damages when balancing, this could be the simpler and most effective option.
Please let me know what you think and what could be the best solution for you.
Thank you very much