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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 18.1
edited by Admin
on 2025/02/19 09:55
Change comment: There is no comment for this version
To version 16.1
edited by Admin
on 2025/02/14 10:51
Change comment: There is no comment for this version

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182 182  
183 183  The BMS Main 2.x has a relay to control the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in a case of sealing of the charging or discharging contactor.
184 184  
185 -The Main contactor algorithm supports the following modes:
185 +The main contactor closes if there are no errors from the list below:
186 186  
187 -* Always on;
188 -* Automatic;
189 -* On demand.
187 +* Overcurrent;
188 +* Undervoltage;
189 +* Overvoltage;
190 +* High temperature (charging);
191 +* High temperature (discharging);
192 +* Unallowable charging;
193 +* Critical error.
190 190  
191 -In “Always on” mode main contactor closes if all the following is true:
195 +The main contactor opens if the charging and discharging relays are opened and any of the following conditions is met:
192 192  
193 -* Other contactors are open;
194 -* There are no errors from the list below:
195 -** Overcurrent;
196 -** Undervoltage;
197 -** Overvoltage;
198 -** High temperature (charging);
199 -** High temperature (discharging);
200 -** Unallowable charging;
201 -** Critical error.
197 +* charging or discharging current is detected during a set time;
198 +* voltage of any cell is lower than the minimum cell voltage configured in the section "Protections → Undervoltage protection" during a set time;
199 +* voltage of any cell is greater than the maximum cell voltage configured in the section "Protections → Overvoltage protection" during a set time;
200 +* temperature of any cell is greater than the maximum cell temperature configured in the section "Protections → High temperature protection" during a set time;
201 +* Critical error stays on during a set time.
202 202  
203 -In “Always on” mode main contactor opens if all the following is true:
204 -
205 -* Other contactors are open;
206 -* There is an error from the the list above.
207 -
208 -In “Automatic” mode, the main contactor closes by internal algorithms at the same time with other contactors.
209 -
210 -In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
211 -
212 212  To change the parameters of the main contactor, select the menu "Cells → Main contactor":
213 213  
214 -[[image:1739958553206-813.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="410"]]
205 +[[image:1732209137414-912.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="132" width="352"]]
215 215  
216 216  In this section:
217 217  
218 218  * Enable – a flag to enable the main contactor control;
219 -* Algorithm – main contactor control algorithm:
220 -** Always on – contactor is always closed;
221 -** Automatic – contactor closes by internal charge and discharge algorithms;
222 -** On demand – contactor is closed by an external request;
223 223  * Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
224 224  * Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
225 225  
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