Dear all,
As part of a master thesis in (mechanical ) engineering sciences at the katholic University of Leuven (Belgium), I am currently involved in the design and construction of a modular hybrid car platform. The aim of this platform is to develop a platform on which various configurations of batteries and motors can be combined to simulate and develop hybrid and electic powertrains. This project is financed and supported by the Belgian Company Punch Powertrain.
In the current design we will use a HV dc bus, connected to a ~350V dc battery consisting of 112 3.3V LiFePO4 cells. Power requirement are estimated to reach 30kW continous up to 70kW peak power, resulting in currents up to 100 (continous) to 200 A (peak). All cells are connect in series.
For the battery management design i'm currently exploring several options including the active balancing design from Ti. I have however some small questions concerning the design:
- What is the difference between the EM 1401 EVM en TIDA-00239 module (the first being an 'evaluation module' the last one being a 'reference design', i am however not familiar with TI terminology) . I noticed that the used TI-components are identical ?
- To improve the SOC estimation We plan to impliment a extended Kalman Filter, based on individual cell voltage and pack current. If it is impossible to run this filter on this board (which I assume to be the case), this will run on a seperate Can controller. Is it possible to access the measured cell-voltages of either of the models true the can system and /or direct the cell balancing from a seperate controller ?
- As far as software is concerned, is the C-code provide with the module or can everything be controlled from the graphic user interface ?
- Is cell balancing between modules possible ?
- Does TI give a form of academic discount on its components ?
I hope to here from you soon.
yours sincerely,
Steven De Bruyn