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Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:14
From version 10.8
edited by Admin
on 2024/12/24 16:27
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To version 10.4
edited by Admin
on 2024/12/24 16:21
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="SMALL" imageType="PNG"}}
109 +{{formula fontSize="NORMAL" imageType="PNG"}}
110 110  R = \frac{U-U_{ocv}}{I_{stable}}
111 111  {{/formula}}
112 112  
... ... @@ -114,18 +114,16 @@
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 -{{formula fontSize="SMALL"}}
118 -R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}}
119 -{{/formula}}
117 +R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
120 120  
121 -provided that
122 -
123 -{{formula fontSize="SMALL"}}
124 -| I_{stable2}-I_{stable1} | > 0.2 × Qmax
119 +{{formula}}
120 +R = frac\{U_2-U_1}{I_{stable2}-I_{stable1}}
125 125  {{/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.
123 +(Q,,max,, is the maximum cell capacity),
128 128  
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.
126 +
129 129  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.
130 130  
131 131  To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section:
... ... @@ -140,7 +140,7 @@
140 140  * Minimum SOC – minimum cell SOC value for resistance calculation;
141 141  * Maximum SOC – maximum cell SOC value for resistance calculation.
142 142  
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).
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).
144 144  
145 145  === Low SOC (signal) ===
146 146  
... ... @@ -275,6 +275,7 @@
275 275  
276 276  I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,,
277 277  
276 +
278 278  === Discharge map (PEAK & CONTINUOUS) ===
279 279  
280 280  The BMS Main 3 has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes.
... ... @@ -302,21 +302,6 @@
302 302  
303 303  I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,,
304 304  
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 -
320 320  === Charge ===
321 321  
322 322  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.