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Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:14
From version 10.4
edited by Admin
on 2024/12/24 16:21
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To version 10.8
edited by Admin
on 2024/12/24 16:27
Change comment: There is no comment for this version

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... ... @@ -106,7 +106,7 @@
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
108 108  
109 -{{formula fontSize="NORMAL" imageType="PNG"}}
109 +{{formula fontSize="SMALL" imageType="PNG"}}
110 110  R = \frac{U-U_{ocv}}{I_{stable}}
111 111  {{/formula}}
112 112  
... ... @@ -114,16 +114,18 @@
114 114  
115 115  The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance:
116 116  
117 -R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
118 -
119 -{{formula}}
120 -R = frac\{U_2-U_1}{I_{stable2}-I_{stable1}}
117 +{{formula fontSize="SMALL"}}
118 +R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}}
121 121  {{/formula}}
122 122  
123 -(Q,,max,, is the maximum cell capacity),
121 +provided that
124 124  
125 -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.
123 +{{formula fontSize="SMALL"}}
124 +| I_{stable2}-I_{stable1} | > 0.2 × Qmax
125 +{{/formula}}
126 126  
127 +where Q,,max,, — the maximum cell capacity,U,,2,, — 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.
128 +
127 127  The stabilized current I,,stable,, = I, if during the stabilization time the instantaneous current I is in the range from 0.95 × I to 1.05 × I.
128 128  
129 129  To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section:
... ... @@ -138,7 +138,7 @@
138 138  * Minimum SOC – minimum cell SOC value for resistance calculation;
139 139  * Maximum SOC – maximum cell SOC value for resistance calculation.
140 140  
141 -The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
143 +The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance / 2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
142 142  
143 143  === Low SOC (signal) ===
144 144  
... ... @@ -273,7 +273,6 @@
273 273  
274 274  I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,,
275 275  
276 -
277 277  === Discharge map (PEAK & CONTINUOUS) ===
278 278  
279 279  The BMS Main 3 has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes.
... ... @@ -301,6 +301,21 @@
301 301  
302 302  I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,,
303 303  
305 +=== Main contactor ===
306 +
307 +TBA
308 +
309 +=== Charging status ===
310 +
311 +TBA
312 +
313 +=== Discharging status ===
314 +
315 +TBA
316 +
317 +=== Precharge ===
318 +
319 +
304 304  === Charge ===
305 305  
306 306  There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging.