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Please propose a suitable Solution for the following battery management solution System in Automotives

Amal
Expert 1140 points
Other Parts Discussed in Thread: BQ76PL455A, BQ24105-Q1

We are looking for different topologies by which we can switch between Main Battery and Secondary battery of a car in telematics Application. The secondary battery is now assumed to be a combination of 3 to 4 Li-Ion or Li-ion-Po in series capable of supplying 5000mAh Power.
We also need Battery Management IC with power path if possible, along with Fuel Gauge IC with protection implemented.

The following are the functions of the System as a whole:

1.Manage Battery charging of the battery with the spec mentioned above.

2.Measure the voltage level of Battery and alert the system with MCU with a proper serial interface.

3.Suitable battery switching mechanism to switch between Main battery and Secondary battery of a system.

4.Battery Protection Unit for battery along with battery management IC or Fuel gauge or external Protection unit

5.A suitable switching mechanism between Primary and secondary battery

Please propose solutions with reference designs and suitable auto grade parts for this Telematics Application.

  • 0
    TI__Genius 17370 points

    Hi Amal,

    For the monitoring & protection, cell balancing aspects of the system, we recommend the bq76pl455a and bq79606a automotive grade parts with high accuracy for soc calculations (datasheets on the ti product folder). However, this would not include charging/gauge functionality so I will redirect this thread over to chargers for suggestions.

    Regards,

    Taylor

  • 0 in reply to Taylor Vogt
    TI__Guru**** 166996 points

    Hi Amal,

    The closest fit to your application is the BQ24105-Q1 standalone charger for 3 LiIon batteries.  Just curious as to why you need such a high voltage and power for a telematics application?  We haven't seen those applications needed that much power.

     

    Regards,

    Jeff