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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 16.1
edited by Admin
on 2025/02/14 10:51
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To version 18.1
edited by Admin
on 2025/02/19 09:55
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 closes if there are no errors from the list below:
185 +The Main contactor algorithm supports the following modes:
186 186  
187 -* Overcurrent;
188 -* Undervoltage;
189 -* Overvoltage;
190 -* High temperature (charging);
191 -* High temperature (discharging);
192 -* Unallowable charging;
193 -* Critical error.
187 +* Always on;
188 +* Automatic;
189 +* On demand.
194 194  
195 -The main contactor opens if the charging and discharging relays are opened and any of the following conditions is met:
191 +In “Always on” mode main contactor closes if all the following is true:
196 196  
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.
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.
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 +
203 203  To change the parameters of the main contactor, select the menu "Cells → Main contactor":
204 204  
205 -[[image:1732209137414-912.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="132" width="352"]]
214 +[[image:1739958553206-813.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="410"]]
206 206  
207 207  In this section:
208 208  
209 209  * 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;
210 210  * Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
211 211  * Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
212 212  
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