Changes for page 3.3 Control

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...	...	@@ -102,26 +102,18 @@
102	102
103	103	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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105		-{{formula fontSize="SMALL" imageType="PNG"}}
106		-R = \frac{U-U_{ocv}}{I_{stable}}
107		-{{/formula}}
	105	+R = (U-U,,ocv,,) / I,,stable,,,
108	108
109	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.
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111	111	The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance:
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113		-{{formula fontSize="SMALL"}}
114		-R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}}
115		-{{/formula}}
	111	+R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,,
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117		-provided that
	113	+(Q,,max,, is the maximum cell capacity),
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119		-{{formula fontSize="SMALL"}}
120		-| I_{stable2}-I_{stable1} | > 0.2 × Qmax
121		-{{/formula}}
	115	+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.
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123		-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.
124		-
125	125	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.
126	126
127	127	To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section:
...	...	@@ -138,34 +138,6 @@
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139	139	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).
140	140
141		-=== Low SOC (signal) ===
142		-
143		-To change the parameters of the generation a signal about low battery level, select the "Control → Low SOC (signal)" section:
144		-
145		-[[image:1740396460923-423.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
146		-
147		-In this section:
148		-
149		-* Enable – a flag to enable signal generation;
150		-* Minimum SOC, %;
151		-* Tolerant SOC, %;
152		-* Delay before setting the signal, second;
153		-* Delay before clearing the signal, second;
154		-* Lock – lock the signal until the device is reset.
155		-
156		-Signal generation conditions:
157		-
158		-* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
159		-
160		-Conditions for clearing the signal:
161		-
162		-* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
163		-
164		-(% class="box infomessage" %)
165		-(((
166		-The "Low SOC signal" is indicative and can be output to a discrete output or a power switch.
167		-)))
168		-
169	169	=== Charge map ===
170	170
171	171	The BMS Mini device calculates maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.