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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 17.2
edited by Admin
on 2025/02/19 09:51
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To version 21.1
edited by Admin
on 2025/02/19 10:39
Change comment: Загрузить новое вложение 1739961593607-309.png

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110 110  **Note:** In case of errors in the system operation, the opening of the discharging relay is performed either immediately or with a delay T,,off,, (depends on the settings described below).
111 111  )))
112 112  
113 -The board supports controlling the precharging relay. The duration of switching on the precharging relay before closing the discharging (load) relay is adjusted.
113 +The board supports controlling the precharging relay. The duration of switching on the precharging relay and precharge current threshold before closing the discharging (load) relay are adjustable.
114 114  
115 115  When the power down request occurs, the discharging relay opens after delay T,,off,,. Reclosing the discharging relay is performed if the power down request is removed.
116 116  
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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 -The Main contactor algorithm supports the following modes:
203 +In “Always on” mode main contactor opens if all the following is true:
204 204  
205 -*
206 -* Automatic;
207 -* On demand.
205 +* Other contactors are open;
206 +* There is an error from the the list above.
208 208  
208 +In “Automatic” mode, the main contactor closes and opens 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 +
209 209  To change the parameters of the main contactor, select the menu "Cells → Main contactor":
210 210  
211 211  [[image:1739958553206-813.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="410"]]
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213 213  In this section:
214 214  
215 215  * 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;
216 216  * Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
217 217  * Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
218 218  
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