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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 10.1
edited by Admin
on 2024/12/02 15:48
Change comment: There is no comment for this version
To version 11.1
edited by Admin
on 2024/12/11 10:31
Change comment: There is no comment for this version

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1 -== 3.5.1 Charge control ==
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2 += Configuration =
2 2  
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5 +== Battery control ==
6 +
7 +=== Charge control ===
8 +
3 3  There are two relays that serve charging the battery: a charging relay and an allow charging relay. With the help of the allow charging relay, the BMS commands the charger to start or stop charging.
4 4  
5 5  The board supports two charge control algorithms:
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67 67  2) the "Delay before recharging" time has passed since the opening of the allow charging relay.
68 68  )))
69 69  
70 -== 3.5.2 Discharge control ==
76 +=== Discharge control ===
71 71  
72 72  The board has a discharging relay to connect battery to the load.
73 73  
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129 129  * Voltage to clear the “Ready to discharge” signal – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
130 130  * Voltage to reset the “Ready to discharge” signal – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set.
131 131  
132 -== 3.5.3 Discharging (AUX) control ==
138 +=== Discharging (AUX) control ===
133 133  
134 134  The BMS Main 2.x board can control the power supply of external equipment using the auxiliary (AUX) discharging relay. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices.
135 135  
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156 156  ** Maximum voltage – maximum battery voltage, V;
157 157  * Switch off the discharging (AUX) relay on errors – the auxiliary (AUX) discharging relay opens if the following errors occur: Undervoltage, Overcurrent, High temperature (discharging), Short circuit, Critical error.
158 158  
159 -== 3.5.4 Charging/Discharging control ==
165 +=== Charging/Discharging control ===
160 160  
161 161   BMS Main 2.x allows to control charging/discharging contactor that combines algorithms of charging and discharging contactor. It behaves as charging contactor when «Charge request» or «Charger connected» are set, otherwise – as discharging contactor.
162 162  
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168 168  
169 169  * Enable – a flag to enable Charging/Discharging contactor controller.
170 170  
171 -== 3.5.5 Main contactor ==
177 +=== Main contactor ===
172 172  
173 173  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.
174 174  
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200 200  * Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
201 201  * Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
202 202  
203 -== 3.5.6 Power down control ==
209 +=== Power down control ===
204 204  
205 205  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.
206 206