Measuring the temperature of a block of cells in parallel in more than one spot
The judges of student competitions (such as the Formula Hybrid in the US and the Formula Student in the UK) require that at least 30 % of the cells have temperature monitoring.
A battery may consist of:
In case (A) the requirement is easily met: a distributed BMS (such as the Lithiumate) has a temperature sensor per cell board.
In case (B) the requirement can only be met with the Lithiumate Pro, the only off-the-shelf BMS that can be configured for multiple strings in parallel, or with a custom designed BMS.
In case (C), the requirement can only be met with the Lithiumate Pro, the only off-the-shelf BMS that can be configured for multiple cell boards per clock of cells in parallel. This application note shows you how.
Example: 6 cells in parallel form a block, 3 blocks in series, 2 cell boards per block
If using 3 cell boards per block of parallel cells, use banks 0, 5 and 10, and configure the BMS for 3 strings in parallel
If using 4 cell boards per block of parallel cells, use banks 0, 4, 8 and 12, and configure the BMS for 4 strings in parallel
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