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BDS version 220.127.116.11 released
Posted December 9th, 2011 by bdsmadmin
Models added to Battery Design Studio:
- Spiral Distributed 3D
- RCRTinterp - adds capability to simulate effect of discharge/charge rate for a given temperature and rate.
Models removed from Battery Design Studio:
- R model (NTG model simulates the R model if Y parameter is set to 1/Ro value and the RCR model simulates the R model if Rp = 0, and tau set to a large value).
Changes to existing models in Battery Design Studio:
- For spiral cell models the tab separation angle was changed so that it is no longer relative to the starting position.
- The implementation of the MacMullin number for all pouch cells was changed. In early versions of bds, the MacMullin number, Nmac, was defined as
-  Nmac = pow(Porosity, -Bruggeman)/Porosity; A paper (I. Thorat et al, J. Power Src., 188 (2009) 592-600) reported that a more accurate equation was
-  Nmac = BruggemanPreExp *pow(Porosity, -Bruggeman)/Porosity; with BruggemanPreExp=1, by default. The equation in BDS was incorrectly implemented in BDS 18.104.22.168 as:
-  Nmac = BruggemanPreExp *pow(Porosity, -Bruggeman); The Nmac value from  is missing the 1/Porosity factor. This factor was corrected for the BDS 22.214.171.124 and later releases So the MacMullin # used will be computed erroneously by  in BDS versions from 126.96.36.199 to 188.8.131.52 after eq  was changed and before eq  was added. The "right" value for the Bruggeman is given by  and . Eq  was implemented in pouch cells; for spiral cells eq  is still used
Battery Design Studio Framework Enhancements
- This version of BDS provides a translator to convert data from PEC file format to out file format.
- A batch option for BDS is now available. This provides the ability to run a
simulation in BDS from the command line. This is implemented as a BDSBatch
command that has the usage:
bdsbatch -s -t -p -o
where the options are
- -h Help
- -s Non-GUI mode
- -t Absolute path of tbm file name
- -p Absolute path of prg file name
- -o Absolute path of output folder
- -r Absolute path of report file Fields for SOC, Temperature, Heat Generation and Volts have been added to the output file.
Graphical User Interface
- 1. Stack plate builder
- Checks that the sum of the tab offset and the tab width is less than the width of the cell and alerts the user if this is not the case
Build and SDK Environment
- BDS is now built using Microsoft Visual Studio 2010, so users who create their own models using the SDK need to use Microsoft Visual Studio 2010.