Overview
The Core Rack Calculations is a Certified Product Point Template for Battery Racks that defines required normalized real-time performance calculations that scale, or transform several of the points in the Core Real-Time Data. These points are required for the Bazefield installation to function properly across all core applications.
These calculations specifically translate OEM-specific signals into consistent indicators of operational state, availability, communication status, and event conditions. By abstracting vendor-specific complexities, the Core Rack Calculations enables unified fleet monitoring, reduces configuration overhead, and supports consistent reporting and alarm management across heterogeneous battery racks technologies.
The Core Rack Calculations template defines 3 derived calculations for Battery Racks. These calculations provide cell imbalance metrics and OCV-based State of Charge estimation for battery health monitoring.
Template Definition
The Core Rack Calculations is defined below. Calculations are one of the following types:
Scale Equations — Algebraic or logical manipulations of input data done on the Bazefield edge buffer
Online Expressions — Algebraic or logical manipulations of input data done on the central Bazefield data engines (typically on a storage node). Similar to scale equations in purpose, but done in the centralized architecture.
Interval Expressions — Algebraic, logical, or advanced manipulations of input data done within a pre-defined aggregation interval (e.g. 5 minutes, 10 minutes, 1 hour, etc). These are typically done centrally on a storage node.
Details on the Point Names, Descriptions, and Types are below.
Required for Bazefield Core Dashboard functionality
Optional for common additional data streams/sources
Calculation Definition Table
Name | Description | Type | Interval | Units | |
|---|---|---|---|---|---|
CellTempImbalance | Cell-level thermal spread within the rack (CellTempMax - CellTempMin). Industry-standard indicator of uneven cell aging or cooling. | Calculation (Scale Eq) | Real-time | °C | |
CellVoltageImbalance | Cell-level voltage spread within the rack (CellVoltageMax - CellVoltageMin). Industry-standard indicator of cell-to-cell SOC imbalance or degradation. | Calculation (Scale Eq) | Real-time | V | |
OCVStateOfCharge | OCV-estimated State of Charge via chemistry-specific voltage-SOC lookup curve. Valid only during standby (IEC-OperationState = 2) with low current. Requires OCV-SOC RefCurve. | Calculation (Interval Exp.) | 5 min | % |