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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56
From version 83.1
edited by Admin
on 2026/04/02 09:45
Change comment: There is no comment for this version
To version 86.1
edited by Admin
on 2026/04/02 10:05
Change comment: There is no comment for this version

Summary

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39 39  
40 40  === SOC estimation ===
41 41  
42 -The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell, and then the overall battery SOC, by using following algorithms:
42 +The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell by using following algorithms:
43 43  
44 44  The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
45 45  
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94 94  
95 95  === SOH estimation ===
96 96  
97 -The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
97 +The BMS Main 3 / BMS Main 2R device calculates the state of health of the battery (SOH) using two algorithms:
98 98  
99 99  In **"By effective capacity" **mode SOH is calculated as a ratio of effective capacity to nominal capacity. Effective capacity is estimated to DOD value when battery SOC reaches 0%, so SOH is recalculated each full battery discharge.
100 100  
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402 402  
403 403  The BMS Main 3 / BMS Main 2R device can control the precharge contactor. The precharge contactor is used to charge the intermediate capacity with low current and usually placed with the limiting resistor in parallel to charging or discharging contactor.
404 404  
405 -BMS Main 3 can detect errors while pre-charging the load capacity by monitoring **the current and voltage difference** before and after contactors.
405 +BMS Main 3 can check the preacharge process by monitoring **the current and voltage difference** before and after contactors.
406 406  
407 -BMS Main 2R can detect errors while pre-charging the load capacity **only by monitoring the current**.
407 +BMS Main 2R can check the preacharge process **only by monitoring the current**.
408 408  
409 409  In **simple **mode precharge contactor closes a "Precharge time" before the closing of Charge or Discharge contactors and opens after the same amount of time after closing them.
410 410