Light Duty Technology Cost Analysis, Power - US Environmental ...

The battery management control board (Figure G-10) has a chip set for each individual
cell of the battery pack. The chip set controls the charge and discharge rates of each
individual cell and monitors charge values to maintain balance of the cells in each
individual module. Each of the modules has a master control chip that controls the
balance of charge for each module to maintain balance in the overall battery pack.
G.1.1.2 Lithium Polymer Electrical Power Supply Cost Impact
For the lithium polymer high voltage traction battery (LIB) analysis, four (4) main subsubsystems
were evaluated for cost:
� Traction Battery Modules ( i.e., 6 - 30V modules)
� Traction Battery Relays, Fuses, Disconnects, etc.
� Traction Battery Sensing & Control Modules
� Assembly of High Voltage Traction Battery Subsystem
The costs for the sub-subsystems listed above can be found in Table G-2. To compensate
for missing sub-subsystems not included with the evaluated service parts, the Ford Fusion
HEV vehicle cost analysis results were utilized. These surrogate subsystem costs, which
included costs for components such as the battery cooling module, energy control module,
low voltage battery wire harness connections, and assembly of the battery to the vehicle
were scaled primarily by battery capacity. The results of the scaling can be found in
Table A-5, under System ID H.3.
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