Solar Stik 21-0202317, Руководство оператора и по техническому обслуживанию

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Operator and Maintenance Manual for the 24VDC Li ESM 2000
April 2022 | Solar Stik® Inc. 18 |
Battery Management System (BMS)
The 24VDC Li ESM 2000 consists of LiFePO
4
cells and an advanced BMS that performs, in very
general terms, two vital functions:
1. The BMS manages all battery functions and promotes healthy cycling at the individual cell level.
2. BMS protection circuits protect the battery and the operator from dangerous conditions related to
cell voltages, temperatures, and current flowing in or out of the battery.
When all operating conditions are satisfactory, current can flow in/out of the battery cells (cycling).
If temperature, voltage, or current is outside of programmed limits, the BMS protection circuits
engage and remove the cells from service
, disabling the battery at its terminals until proper operating
conditions are restored.
Information from the BMS such as State of Charge, State of Health and Faults are reported on the
Battery Status Indicator .
ESM State of Charge (SOC)
The BMS State of Charge (SOC) algorithm is based on a combination of open-circuit cell voltages,
coulomb counting, and other cell-level telemetry. The algorithm computes and reports SOC for the
entire battery on the Battery Status Indicator in five (5) segments or bars that fill/empty as the ESM
charges/discharges respectively. The SOC reported in Figure 8 is somewhere between 60 and 80%.
When the battery is charged to 81%, the fifth bar will fill completely. A numerical SOC report can be
found on the diagnostic screen (see Figure 18 on page 25).
Figure 8. Battery Status Indicator SOC 5-segment report
0-20%
21-40%
41-60%
61-80%
81-100%