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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 8.2
edited by Admin
on 2024/11/22 15:12
Change comment: Updated parent field.
To version 6.1
edited by Admin
on 2024/11/21 17:12
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169 169  In this section:
170 170  
171 171  * Enable – a flag to enable Charging/Discharging contactor controller.
172 -
173 -== 3.5.5 Main contactor ==
174 -
175 -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.
176 -
177 -The main contactor closes if there are no errors from the list below:
178 -
179 -* Overcurrent;
180 -* Undervoltage;
181 -* Overvoltage;
182 -* High temperature (charging);
183 -* High temperature (discharging);
184 -* Unallowable charging;
185 -* Critical error.
186 -
187 -The main contactor opens if the charging and discharging relays are opened and any of the following conditions is met:
188 -
189 -* charging or discharging current is detected during a set time;
190 -* voltage of any cell is lower than the minimum cell voltage configured in the section "Protections → Undervoltage protection" during a set time;
191 -* voltage of any cell is greater than the maximum cell voltage configured in the section "Protections → Overvoltage protection" during a set time;
192 -* temperature of any cell is greater than the maximum cell temperature configured in the section "Protections → High temperature protection" during a set time;
193 -* Critical error stays on during a set time.
194 -
195 -To change the parameters of the main contactor, select the menu "Cells → Main contactor":
196 -
197 -[[Main contactor settings>>image:1732209137414-912.png||data-xwiki-image-style-alignment="center" height="132" width="352"]]
198 -
199 -
200 -In this section:
201 -
202 -* Enable – a flag to enable the main contactor control;
203 -* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
204 -* Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
205 -
206 -== 3.5.6 Power down control ==
207 -
208 -The BMS Main 2.x can command the BMS Power Control board to shut down the battery system if the battery voltage is low or the battery is idle for a long time. The BMS Main 2.x interacts with the BMS Power Control using the “Power down request” and the “Acknowledgement of power down” discrete signals.
209 -
210 -Shutting down the battery system is performed according to the following conditions:
211 -
212 -* the battery voltage is below the minimum level;
213 -* the “Charger connected” signal is cleared for 60 seconds.
214 -
215 -The BMS Main 2.x also shuts down the battery if it stays in the “Charging OFF”, “Discharging OFF”, “Relaxed (after charging)” or “Relaxed (after discharging)” for the set time.
216 -
217 -To change the parameters of the power down control, select the menu "Cells → Power down control":
218 -
219 -[[Power down control section>>image:1732211675123-235.png||data-xwiki-image-style-alignment="center" height="198" width="402"]]
220 -
221 -
222 -In this section:
223 -
224 -* Enable – a flag to enable the power down control;
225 -* Minimum voltage – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
226 -* Idle time – a time of battery inactivity after which the battery is shut down, second;
227 -* Wait the "Power up/down request" signal is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
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