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Changes for page 3.4 Protections

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6 6  
7 7  The BMS Main X monitors the battery modules, compares the voltages and currents of the modules, and protects the battery system from damage.
8 8  
9 -(% class="box errormessage" %)
10 -(((
11 -**Attention!**
12 -Behavior of contactors at different errors is configured in **corresponding contactor settings**!
13 -)))
14 -
15 -=== Charging current limit ===
16 -
17 -The BMS Main X device protects the battery from charging current higher than estimated current limit.
18 -
19 -To configure parameters of the charge current limit, select the "Protections → Charge current limit" section:
20 -
21 -[[image:1740754371437-635.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="142" width="800"]]
22 -
23 -In this section:
24 -
25 -* Enable – a flag to enable the protection;
26 -* Threshold to switch from Region 1 to Region 2 – a threshold current value, dividing regions 1 and 2 with their error generation conditions, A;
27 -* Region 1: Current difference – an absolute difference of measured battery current and calculated value “Charge current limit”, at which error is generated (condition for Region 1), A;
28 -* Region 2: Current difference – a relative difference of measured battery current and calculated value “Charge current limit”, at which error is generated (conditions for Region 2), %;
29 -* Delay before setting the error, millisecond;
30 -* Delay before clearing the error, second;
31 -* Lock – a flag to block the error until the device is restarted.
32 -
33 -As a result of the operation of the charging current limit protection, the “Current limit error (CH)” is generated.
34 -
35 -Error generation conditions:
36 -
37 -* if the current is positive, less than “Threshold to switch from Region 1 to Region 2” value and exceeds “Charge current limit” by the “Region 1: Current difference” value during the “Delay before setting the error” time;
38 -* if the current is positive, more than “Threshold to switch from Region 1 to Region 2” value and exceeds “Charge current limit” by the (“Region 2: Current difference” × “Charge current limit”) / 100 value during the “Delay before setting the error” time.
39 -
40 -Error is cleared if conditions for generating an error do not apply during the “Delay before clearing the error” time.
41 -
42 -=== Discharging current limit ===
43 -
44 -The BMS Main X device protects the battery from discharging current higher than estimated current limit.
45 -
46 -To configure parameters of the charge current limit, select the "Protections → Discharge current limit " section:
47 -
48 -[[image:1740754420820-767.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
49 -
50 -In this section:
51 -
52 -* Enable – a flag to enable the protection;
53 -* Threshold to switch from Region 1 to Region 2 – a threshold current value, dividing regions 1 and 2 with their error generation conditions, A;
54 -* Region 1: Current difference – an absolute difference of measured battery current and calculated value “Discharge current limit”, at which error is generated (condition for Region 1), A;
55 -* Region 2: Current difference – a relative difference of measured battery current and calculated value “Discharge current limit”, at which error is generated (conditions for Region 2), %;
56 -* Delay before setting the error, millisecond;
57 -* Delay before clearing the error, second;
58 -* Lock – a flag to block the error until the device is restarted.
59 -
60 -As a result of the operation of the charging current limit protection, the “Current limit error (DCH)” is generated.
61 -
62 -Error generation conditions:
63 -
64 -* if the current is negative, and the current modulus is less than “Threshold to switch from Region 1 to Region 2” value and exceeds “Discharge current limit” by the “Region 1: Current difference” value during the “Delay before setting the error” time;
65 -* if the current is negative, and the current modulus is more than “Threshold to switch from Region 1 to Region 2” value and exceeds “Discharge current limit” by the (“Region 2: Current difference” × “Discharge current limit”) / 100 value during the “Delay before setting the error” time.
66 -
67 -Error is cleared if conditions for generating an error do not apply during the “Delay before clearing the error” time.
68 -
69 69  === Battery cover ===
70 70  
71 71  The BMS Main X device detects the opening of the battery cover and performs a protective opening of the contactors.
... ... @@ -72,7 +72,7 @@
72 72  
73 73  Battery cover protection is configured in the "Protections - Battery cover" section:
74 74  
75 -[[image:1734356776691-451.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="88" width="800"]]
15 +[[image:1734356776691-451.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="66" width="600"]]
76 76  
77 77  In this section:
78 78  
... ... @@ -91,7 +91,7 @@
91 91  
92 92  (% class="box warningmessage" %)
93 93  (((
94 -If there is the "Battery cover" error, the **"Critical error flag" is generated.**
34 +If there is the "Battery cover" error, the **"Critical error flag" is generated and all battery contactors open.**
95 95  )))
96 96  
97 97  === Insulation ===
... ... @@ -100,24 +100,26 @@
100 100  
101 101  Insulation protection is configured in the "Protections - Insulation" section:
102 102  
103 -[[image:1740754491323-815.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="121" width="800"]]
43 +[[image:1734356776694-257.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="68" width="600"]]
104 104  
105 105  In this section:
106 106  
107 -* Enable – a flag to enable the protection;
108 -* Checking algorithm – isolation checking mode:
109 -** Always on – check is always performed;
110 -** On charging – check is performed only if the “Charge request” is set;
111 -** Except charging - check is performed only if the “Charge request” is cleared;
112 -* Delay before setting the error, second;
113 -* Delay before clearing the error, second;
47 +* Enable – a flag to enable the protection;
48 +* Delay before setting the error;
49 +* Delay before clearing the error;
114 114  * Lock – a flag to block the error until the device is restarted.
115 115  
116 -The “Insulation fault” is set if the “Insulation status” signal is detected during the “Delay before setting the error” time. The “Insulation status” signal can be received through the discrete input or by the CAN bus from an insulation monitoring device. The “Insulation fault” is cleared if the “Insulation status” signal is cleared during the “Delay before clearing the error” time.
52 +As a result of the operation of the insulation fault protection, the error “Insulation fault” is generated. Conditions for generating the error:
117 117  
54 +* presence of the “Insulation status” signal during the “Delay before setting the error” time.
55 +
56 +Conditions for clearing the error:
57 +
58 +* no “Insulation status” signal during the “Delay before clearing the error” time.
59 +
118 118  (% class="box warningmessage" %)
119 119  (((
120 -If there is the "Insulation fault" error, **the critical error flag is generated.**
62 +If there is the "Insulation fault" error, **the critical error flag is generated and all battery contactors open.**
121 121  )))
122 122  
123 123  === Contactor feedback ===
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126 126  
127 127  Contactor feedback protection is configured in the “Protections – Contactor feedback” section:
128 128  
129 -[[image:1734356776695-557.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="89" width="800"]]
71 +[[image:1734356776695-557.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="67" width="600"]]
130 130  
131 131  In this section:
132 132  
... ... @@ -145,7 +145,7 @@
145 145  
146 146  (% class="box warningmessage" %)
147 147  (((
148 -If there is the “CH contactor feedback error”, “DCH contactor feedback error”, or “CH/DCH contactor feedback error”, **the critical error flag is generated.**
90 +If there is the “CH contactor feedback error”, “DCH contactor feedback error”, or “CH/DCH contactor feedback error”, **the critical error flag is generated and all battery contactors open.**
149 149  )))
150 150  
151 151  === Module offline ===
... ... @@ -154,68 +154,61 @@
154 154  
155 155  Protection against loss of communication with battery modules is configured in the "Protections - Module offline" section:
156 156  
157 -[[image:1740754588971-137.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
99 +[[image:1734356793441-881.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="75" width="600"]]
158 158  
159 159  In this section:
160 160  
161 -* Enable – a flag to enable the protection;
162 -* Number of offline modules to set the error;
163 -* Delay before setting the error, second;
164 -* Delay before clearing the error, second;
165 -* Lock – lock the error until the device is reset.
103 +* Enable – a flag to enable the protection;
104 +* Delay before setting the error;
105 +* Delay before clearing the error;
106 +* Lock – a flag to block the error until the device is restarted.
166 166  
167 -As a result of the protection from loss of communication with battery modules, the "Module offline" error is generated.
108 +As a result of the protection against loss of communication with the battery module, the “Module offline” error is generated. Conditions for generating the error:
168 168  
169 -Error generation conditions:
110 +* at least one of the battery modules does not respond to commands within the "Delay before setting the error" time.
170 170  
171 -* more than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main 3X device within “Delay before setting the error” time.
112 +Conditions for clearing the error:
172 172  
173 -Conditions for removing the error:
114 +* all battery modules respond to commands within the "Delay before clearing the error" time.
174 174  
175 -* less than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main 3X device within “Delay before clearing the error” time.
176 -
177 177  (% class="box warningmessage" %)
178 178  (((
179 -If there is the "Module offline" error, **“Critical error” is generated.**
118 +If there is the "Module offline" error, **the critical error flag is generated and all battery contactors open.**
180 180  )))
181 181  
182 -=== Voltage unbalance (in any state) ===
121 +=== Voltage unbalance ===
183 183  
184 184  Before closing the contactors for charging and discharging battery modules, the BMS Main X device detects those modules whose voltage is significantly different from the rest. For unbalanced modules, errors "Voltage unbalance (CH)" (charge circuit) and "Voltage unbalance (DCH)" (discharge circuit) are generated.
185 185  
186 -Protection against voltage unbalance of battery modules is configured in the section "Protections - Voltage unbalance (in any state)":
125 +Protection against voltage unbalance of battery modules is configured in the section "Protections - Voltage unbalance":
187 187  
188 -[[image:1740754732291-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
127 +[[image:1734356793449-249.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="75" width="600"]]
189 189  
190 190  In this section:
191 191  
192 192  * Enable – a flag to enable the protection;
193 193  * Delta voltage – maximum allowable voltage difference of battery modules, V;
194 -* Use the open circuit voltage to detect the error – a flag to enable U,,ocv,, correction;
195 195  * Delay before setting the error;
196 196  * Delay before clearing the error;
197 -* Set the 'Voltage unbalance' error for the modules that are not ready to charge/discharge;
198 198  * Lock – a flag to block the error until the device is restarted.
199 199  
200 -As a result of the operation of the voltage unbalance protection the errors “Voltage unbalance (CH)” and “Voltage unbalance (DCH)” are generated.
137 +As a result of the operation of the voltage unbalance protection the errors “Voltage unbalance (CH)” and “Voltage unbalance (DCH)” are generated. Conditions for generating the error:
201 201  
202 -Conditions for generating the error:
139 +* battery module is not included in the largest group of modules whose voltages differ from each other by no more than "Delta voltage" during the "Delay before setting the error" time.
203 203  
204 -* battery module is not included in the largest group of modules whose voltages differ from each other by no more than "Delta voltage" during the "Delay before setting the error" time;
205 -* module is not ready to charge or discharge;
206 -
207 207  Conditions for clearing the error:
208 208  
209 -* battery module is in the largest group of balanced modules during the "Delay before clearing the error" time;
210 -* module is ready to charge or discharge.
143 +* battery module is in the largest group of balanced modules during the "Delay before clearing the error" time.
211 211  
212 -=== Current unbalance (in “Balancing” state) ===
145 +If there is the error "Voltage unbalance (CH)" ("Voltage unbalance (DCH)"), the charging (discharging) contactor of the battery module opens.
213 213  
147 +=== Current unbalance ===
148 +
214 214  When battery modules are connected in parallel, the most charged modules transfer charge to the least charged modules. The process of charge transfer is accompanied by the flow of balancing currents. The BMS Main X device detects modules with high balancing currents and generates “Current unbalance (CH)” (charge circuit) and “Current unbalance (DCH)” (discharge circuit) errors for them.
215 215  
216 216  Protection against current unbalance of battery modules is configured in the section "Protections - Current unbalance":
217 217  
218 -[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
153 +[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="77" width="600"]]
219 219  
220 220  In this section:
221 221  
... ... @@ -223,20 +223,19 @@
223 223  * Maximum current – a maximum allowable self-balancing current of battery modules, A;
224 224  * Delay before setting the error;
225 225  * Delay before clearing the error;
226 -* Check all the time (not only in the ‘Balancing’ state) – a flag to enable voltage check not only in “Balancing” state;
227 227  * Lock – a flag to block the error until the device is restarted.
228 228  
229 229  As a result of the operation of the current unbalance protection the errors “Current unbalance (CH)” and “Current unbalance (DCH)” are generated. Conditions for generating the error:
230 230  
231 -* the current of the battery module is greater than the "Maximum current" value during the "Delay before setting the error" time.
165 +* current of the battery module is greater than the "Maximum current" value during the "Delay before setting the error" time.
232 232  
233 233  Conditions for clearing the error:
234 234  
235 -* the current of the battery module is less than the "Maximum current" value during the "Delay before clearing the error" time.
169 +* current of the battery module is less than the "Maximum current" value during the "Delay before clearing the error" time.
236 236  
237 237  If there is the error "Current unbalance (CH)" ("Current unbalance (DCH)"), the charging (discharging) contactor of the battery module opens.
238 238  
239 -=== Charging current unbalance (in “Charging” state) ===
173 +=== Charging current unbalance ===
240 240  
241 241  During battery charging, the currents of the battery modules may vary. The BMS Main X device detects modules whose charging currents are significantly different from the currents of other modules and generates the “Charging current unbalance” errors for them.
242 242  
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