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Active Cell balancing

hello Everyone

I recently joined TI community and I need help for making of my project on Battery Management and monitoring that I am going to use for All terrain vehicle( electric ). I want to do active balancing of 16 Cells that are Li-ion connected in series ( total 48 V, 150 Ah). I am trying this using switch capacitance method but it is taking too much time ( more than 15 hrs for just balancing any cell to charge for 2-3% of the SOC), even if i used super capacitor ( not allowed in the project ).

Please help me if  there is any better and efficient method for faster active balancing of the cells, also if there is any chip set available for the faster balancing of the whole battery pack while charging, discharging and running of the electric vehicle.

Thanks

  • Hi Shyam,

    You may be interested in our EM1402 EVM (also available as a reference design). This design utilizes our EMB1499/EMB1428 chipset to implement a switch matrix and DC-DC converter.

    With a converter based ACB solution, you can achieve very high balance currents (up to 5A typically) and the relatively high efficiency that a DC-DC has to offer. The price you pay for the high performance then comes from cost and size.

    Link to EVM: www.ti.com/.../em1402evm

    Link to TIDA: www.ti.com/.../TIDA-00817