Skip to Content

Changes for page 3.4 Battery parameters

Last modified by Admin on 2025/04/09 12:04
From version 31.1
edited by Admin
on 2025/02/19 09:47
Change comment: There is no comment for this version
To version 25.1
edited by Admin
on 2024/12/11 10:29
Change comment: There is no comment for this version

Summary

Details

Page properties
Parent
... ... @@ -1,1 +1,1 @@
1 -Battery management systems.BMS Main 2\.1.3\. Configuration.WebHome
1 +drafts.BMS Main 2\.1.3\. Configuration.WebHome
Content
... ... @@ -48,8 +48,6 @@
48 48  * Final SOC – a method of calculating the battery SOC:
49 49  ** Minimum cell SOC – the battery SOC is assumed to be equal to the minimum SOC of cells;
50 50  ** Average cell SOC – the battery SOC is assumed to be equal to the average SOC of cells;
51 -** 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 has 100% SOC, b) 0% if any cell has 0% SOC;
52 -** 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;
53 53  * Scale the final SOC – flag to scale the battery SOC by the following values;
54 54  * Internal SOC corresponding to 0% – battery SOC that sets to be 0%;
55 55  * Internal SOC corresponding to 100% – battery SOC that sets to be 100%.
... ... @@ -123,20 +123,11 @@
123 123  * the voltage on the cell is higher than the starting voltage of the balancing;
124 124  * the difference between the cell voltage and the minimum voltage among the cells of the battery is greater than the balancing threshold.
125 125  
126 -A balancing resistor is disconnected from the cell if any of the following conditions are met:
124 +If the BMS Logic board overheats, then the balancing of the cells connected to this board will not be performed (see [[Logic high temperature protection>>doc:drafts.BMS Main 2\.1.3\. Configuration.3\.6 Battery protection.WebHome||anchor="HLogichightemperatureprotection"]]).
127 127  
128 -* the voltage on the cell is less than the balancing stop voltage;
129 -* the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
130 -
131 -If the BMS Logic board overheats, then the balancing of the cells connected to this board will not be performed (see [[Logic high temperature protection>>doc:Battery management systems.BMS Main 2\.1.3\. Configuration.3\.6 Battery protection.WebHome||anchor="HLogichightemperatureprotection"]]).
132 -
133 -The BMS Main 2.1 can enable the cell balancing by the external “Balancing request” signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold.
134 -
135 -BMS Main 2.1 can force a cell balancing, if its voltage is higher than estimated value.
136 -
137 137  To change the cell balancing parameters, select the menu "Cell → Cell balancing":
138 138  
139 -[[image:1739812799920-892.png||alt="1732207485773-804.png" data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="264" width="387"]]
128 +[[image:1732207485773-804.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="264" width="387"]]
140 140  
141 141  In this section:
142 142  
... ... @@ -148,13 +148,8 @@
148 148  ** Charging;
149 149  ** Charging or relaxed;
150 150  ** Always (regardless of battery state);
151 -* Balancing condition:
152 -** Automatic – balancing will be performed automatically if needed conditions are met;
153 -** On balancing request – balancing will start only if a remote request is received. In this case cells will start to balance regardless the "Voltage deviation to start balancing" value;
154 154  * Minimum cell voltage to start balancing, V;
155 -* Deviation to start balancing;
156 -* Deviation to stop balancing;
157 -* Voltage for forced balancing – if cell voltage is above this value, it will start discharging through balancing resistor;
141 +* Balancing threshold, V;
158 158  * Start cell discharging – a command to start forced balancing of all battery cells (used for service purposes);
159 159  * Stop cell discharging – a command to stop forced balancing of all battery cells (used for service purposes).
160 160  
... ... @@ -162,7 +162,7 @@
162 162  
163 163  The BMS Main 2.x board supports work with two independent (galvanically unrelated) cell series. To monitor the status of two series, two current sensors are used: primary and secondary (AUX). A series of cells must be equivalent: they must have the same number of cells and the same capacity.
164 164  
165 -Since the series of cells can operate at different loads, they must be balanced. For this, the BMS Main 2.x provides two relays: “Balancing series 1” and “Balancing series 2” (see [[Input and output signals>>doc:Battery management systems.BMS Main 2\.1.3\. Configuration.3\.3 Input and output signals.WebHome]]), as well as a combined algorithm that considers both the voltage of each series and the charge that these series gave load. “Balancing series 1” and “Balancing series 2” relays are used to connect high-power balancing resistors in parallel with cells series 1 and 2.
149 +Since the series of cells can operate at different loads, they must be balanced. For this, the BMS Main 2.x provides two relays: “Balancing series 1” and “Balancing series 2” (see [[Input and output signals>>doc:drafts.BMS Main 2\.1.3\. Configuration.3\.3 Input and output signals.WebHome]]), as well as a combined algorithm that considers both the voltage of each series and the charge that these series gave load. “Balancing series 1” and “Balancing series 2” relays are used to connect high-power balancing resistors in parallel with cells series 1 and 2.
166 166  
167 167  When charging the battery, balancing is performed based on the voltage of the series. A balancing resistor is connected to the cell series if:
168 168  
1739812799920-892.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -28.1 KB
Content