State of energy (SOE) is the ratio of the actual remaining watt-hour capacity of the battery to the rated watt-hour capacity.
SOE describes the actual remaining available power of the energy storage system, which is used for energy storage system revenue budget accounting and the formulation of whole container and whole station dispatching strategies.
State of charge (SOC) is the ratio of the actual remaining ampere-hour capacity of the battery to the rated ampere-hour capacity.
Cluster-level SOC calculation follows the short board effect, reflects the minimum charge capacity of the cells in the cluster, and is the basis for control strategies such as system power limit faults and thermal management.
State of power (SOP) is the available charge and discharge power of the battery. The SOP reflects the instantaneous continuous throughput capacity of the battery system.
The SOP depends mainly on the SOC and temperature, and is also affected by many other factors.
For energy storage systems, the SOP calculated by the BMS reflects the maximum available capacity of the system and defines the available boundaries for higher-level controllers.
State of health (SOH) is the ratio of the battery's actual remaining full charge and discharge capacity to the full charge and discharge capacity available for a new battery.
SOH directly reflects the decline in the system's energy throughput capacity, and also indirectly reflects the overall life decline of the battery system.
Mastering these battery terms is crucial when overseeing battery data remotely. Adhering to the correct settings as per project requirements and supplier's guidance will significantly prolong the project's lifespan and maximize economic advantages for clients.
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