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Changes for page 3.3 Control

Last modified by Admin on 2025/12/11 10:32
From version 65.1
edited by Admin
on 2025/10/14 10:02
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To version 68.1
edited by Admin
on 2025/12/11 10:17
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... ... @@ -102,6 +102,27 @@
102 102  * Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
103 103  * Last correction timestamp – time when last correction was made.
104 104  
105 +=== SOH estimation ===
106 +
107 +The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
108 +
109 +* By effective capacity;
110 +* By total charge-.
111 +
112 +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.
113 +
114 +In "By total charge-" mode SOH is calculated as a linear function of "Total charge-" counter. While "Total charge-" constantly increases during battery operation, SOH will be linearly decrease at the same time. This mode requires a confirmed cell data to set the expecting SOH at the expecting amount of charge-.
115 +
116 +To configure parameters for battery state of health calculation, select the "Control → SOH correction" section:
117 +
118 +[[image:1765447975228-766.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]In this section:
119 +
120 +* Algorithm:
121 +** By effective capacity;
122 +** By total charge-;
123 +* Total charge: Charge- –  total amount of charge- for expected SOH;
124 +* Total charge: SOH –  expected SOH value at the total amount of charge-.
125 +
105 105  === Resistance estimation ===
106 106  
107 107  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
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