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Changes for page 3.4 Battery parameters

Last modified by Admin on 2025/04/09 12:04
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To version 13.1
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1 -drafts.bms-main-2-1.configuration.WebHome
1 +drafts.bms-main-2.configuration.WebHome
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2 2  
3 3  To change the default cell settings, select the menu "Cells → Cell defaults":
4 4  
5 -[[Cell default section>>image:1732205873121-893.png||data-xwiki-image-style-alignment="center" height="313" width="416"]]
5 +[[image:1732205873121-893.png||data-xwiki-image-style-alignment="center" height="313" width="416"]]
6 6  
7 7   In this section:
8 8  
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31 31  
32 32  To change the parameters of the algorithm for calculating the battery SOC, select the menu "Cells → SOC estimation":
33 33  
34 -[[SOC estimation section>>image:1732206031847-819.png||data-xwiki-image-style-alignment="center" height="849" width="356"]]
34 +[[image:1732206031847-819.png||data-xwiki-image-style-alignment="center" height="849" width="356"]]
35 35  
36 36  In this section:
37 37  
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81 81  
82 82  To change parameters of the algorithm for calculating the cell resistance, select the menu "Cells → Cell resistance estimation":
83 83  
84 -[[Cell resistance estimation settings>>image:1732207338609-903.png||data-xwiki-image-style-alignment="center" height="187" width="337"]]
84 +[[image:1732207338609-903.png||data-xwiki-image-style-alignment="center" height="187" width="337"]]
85 85  
86 86  In this section:
87 87  
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119 119  
120 120  To change the cell balancing parameters, select the menu "Cell → Cell balancing":
121 121  
122 -[[Cell balancing settings>>image:1732207485773-804.png||data-xwiki-image-style-alignment="center" height="264" width="387"]]
122 +[[image:1732207485773-804.png||data-xwiki-image-style-alignment="center" height="264" width="387"]]
123 123  
124 124  In this section:
125 125  
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151 151  
152 152  To change the series balancing parameters, select the menu "Cell → Series balancing":
153 153  
154 -[[Series balancing settings>>image:1732207584941-447.png||data-xwiki-image-style-alignment="center" height="258" width="438"]]
154 +[[image:1732207584941-447.png||data-xwiki-image-style-alignment="center" height="258" width="438"]]
155 155  
156 156  In this section:
157 157  
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176 176  
177 177  To configure parameters for determining the discharge characteristic of the battery, select the menu "Cells → Cell analysis":
178 178  
179 -[[Cell analysis section>>image:1732207696322-587.png||data-xwiki-image-style-alignment="center" height="213" width="258"]]
179 +[[image:1732207696322-587.png||data-xwiki-image-style-alignment="center" height="213" width="258"]]
180 180  
181 181  In this section:
182 182  
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233 233  
234 234  To configure parameters for determining the charge current limit, select the menu "Cells → Charge current map":
235 235  
236 -[[Charge current map settings>>image:1732208033738-498.png||data-xwiki-image-style-alignment="center" height="655" width="453"]]
236 +[[image:1732208033738-498.png||data-xwiki-image-style-alignment="center" height="655" width="453"]]
237 237  
238 +In this section:
239 +
240 +* Enable – a flag to start calculation of the charge current limit;
241 +* Maximum charging current – a maximum allowable value of the charge current (under normal conditions):
242 +* Limit charging current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current Kcs depending on SOC and temperature;
243 +* Limit charging current by the contactor temperature – a flag to enable correction of maximum allowable charging current Kcc depending on the contactor temperature;
244 +* Limit charging current by the maximum cell voltage – a flag to enable correction of maximum allowable charging current Kcv depending on maximum cell voltage;
245 +* Limit charging current by the maximum cell temperature – a flag to enable correction of maximum allowable charging current Kct depending on maximum cell temperature.
246 +
247 +Value of the charge current limit at given SOC, temperature, contactors temperature and maximum cell voltage is calculated as follows:
248 +
249 +Charging current limit = Maximum charging current × Kcs × Kcc × Kcv × Kct.
250 +
238 238  == 3.4.8 Discharge current map ==
239 239  
240 240  The BMS Main 2.x board calculates maximum allowable discharge current values in respect to SOC and battery temperature, contactor temperature and maximum cell voltage.
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243 243  
244 244  To configure parameters for determining the charge current limit, select the menu "Cells → Charge current map":
245 245  
259 +[[image:1732208218667-968.png||data-xwiki-image-style-alignment="center" height="631" width="434"]]
260 +
261 +In this section:
262 +
263 +* Enable – a flag to start calculation of the discharge current limit;
264 +* Maximum discharging current – a maximum allowable value of the discharge current (under normal conditions):
265 +* Current factor – the dependence of the correction factor on SOC and the battery temperature – Kdischarge=Kdischarge (SOC, t°C).
266 +* Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current Kds depending on SOC and temperature;
267 +* Limit discharging current by the contactor temperature – a flag to enable correction of maximum allowable discharging current Kdc depending on the contactor temperature;
268 +* Limit discharging current by the maximum cell voltage - a flag to enable correction of maximum allowable discharging current Kdv depending on maximum cell voltage;
269 +* Limit discharging current by the maximum cell temperature - a flag to enable correction of maximum allowable discharging current Kdt depending on maximum cell temperature .
270 +
271 +Value of the discharge current limit at given SOC, temperature, contactors temperature and maximum cell voltage is calculated as follows:
272 +
273 +Discharging current limit = Maximum discharging current × Kds × Kdc × Kdv × Kdt.
274 +
246 246  == 3.4.9 SOC correction ==
247 247  
248 248  The BMS Main 2.x board can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see section Calculating the state of charge (SOC)).
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249 249  
250 250  To configure parameters for periodically correcting the battery state of charge, select the menu "Cells → SOC correction":
251 251  
252 -[[SOC correction settings>>image:1732206262509-786.png||data-xwiki-image-style-alignment="center" height="291" width="298"]]
281 +[[image:1732206262509-786.png||data-xwiki-image-style-alignment="center" height="291" width="298"]]
253 253  
254 254   In this section:
255 255  
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