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Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:14
From version 8.1
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on 2024/12/24 16:01
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44 44  
45 45  To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
46 46  
47 -[[image:1733322611549-423.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="148" width="800"]]
48 48  
48 +[[image:1735056107942-306.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
49 +
49 49  The following estimation algorithms supported:
50 50  
51 51  * Voltage – by open circuit voltage;
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69 69  
70 70  * Minimal SOC – the battery SOC is assumed to be the minimum SOC among the cells;
71 71  * Average SOC – the battery SOC is taken equal to the arithmetic average of the cell SOC;
72 -* Min-Max SOC – the battery SOC is taken based on the minimum and maximum SOC of the cells (recommended method).
73 +* Min-Max SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if any cell have 100% SOC, b) 0% if any cell have 0% SOC;
74 +* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if all cells have 100% SOC, b) 0% if all cells have 0% SOC;
73 73  
74 74  Other parameters:
75 75  
... ... @@ -104,14 +104,20 @@
104 104  
105 105  Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value
106 106  
107 -R = (U-U,,ocv,,) / I,,stable,,,
109 +{{formula fontSize="NORMAL" imageType="PNG"}}
110 +R = \frac{U-U_{ocv}}{I_{stable}}
111 +{{/formula}}
108 108  
109 -where U is the cell voltage measured in the charge or discharge state, V; U,,ocv,, is the cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, – stabilized current through the cell in the state of charge or discharge.
113 +where U — the cell voltage measured in the charge or discharge state, V; U,,ocv,, — cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, — stabilized current through the cell in the state of charge or discharge.
110 110  
111 111  The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance:
112 112  
113 113  R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
114 114  
119 +{{formula}}
120 +R = frac\{U_2-U_1}{I_{stable2}-I_{stable1}}
121 +{{/formula}}
122 +
115 115  (Q,,max,, is the maximum cell capacity),
116 116  
117 117  where U,,2,, is the voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, – the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it.