Battery knowledge · Data, communication and electronics
HDF5 and Parquet
General-purpose binary formats for large scientific and tabular data — hierarchical HDF5 and columnar Parquet — used to store battery test and fleet data at scale, where CSV becomes too slow and too large.
- Abbreviation
- .h5, .parquet
Example
Data, communication and electronics: an example situation
2500 in a log might mean 25.00 °C, 2.5 V or raw counts. Units and scale must accompany the value.
Read HDF5 and Parquet alongside Battery Data Format in this context. An open, tool-independent format for cell-test time series — time, voltage, current, temperature, cycle and step with agreed names and units — promoted by the Battery Data Alliance so data from different cyclers can be shared and compared without conversion scripts.
Use in Lemonergy
Separate quantities from encoding and transport.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- 3rd generation of the CAN data link layer
CAN in Automation, CAN Newsletter · 2020
Topic background · Classical CAN, CAN FD and CAN XL data-link concepts; publication describes the 2020 state.
- Getting Started with the BQ76925
Texas Instruments · 2019
Topic background · A concrete BMS analog front-end example: cell voltage, current, temperature measurement and MCU integration.