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Changes for page 3.4 Protections

Last modified by Admin on 2025/06/11 15:57
From version 4.1
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20 20  
21 21  [[image:1740754371437-635.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="142" width="800"]]
22 22  
23 +In this section:
23 23  
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 +
24 24  === Battery cover ===
25 25  
26 26  The BMS Main X device detects the opening of the battery cover and performs a protective opening of the contactors.
... ... @@ -27,7 +27,7 @@
27 27  
28 28  Battery cover protection is configured in the "Protections - Battery cover" section:
29 29  
30 -[[image:1734356776691-451.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="66" width="600"]]
75 +[[image:1734356776691-451.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="88" width="800"]]
31 31  
32 32  In this section:
33 33  
... ... @@ -46,7 +46,7 @@
46 46  
47 47  (% class="box warningmessage" %)
48 48  (((
49 -If there is the "Battery cover" error, the **"Critical error flag" is generated and all battery contactors open.**
94 +If there is the "Battery cover" error, the **"Critical error flag" is generated.**
50 50  )))
51 51  
52 52  === Insulation ===
... ... @@ -55,26 +55,24 @@
55 55  
56 56  Insulation protection is configured in the "Protections - Insulation" section:
57 57  
58 -[[image:1734356776694-257.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="68" width="600"]]
103 +[[image:1740754491323-815.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="121" width="800"]]
59 59  
60 60  In this section:
61 61  
62 -* Enable – a flag to enable the protection;
63 -* Delay before setting the error;
64 -* Delay before clearing the error;
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;
65 65  * Lock – a flag to block the error until the device is restarted.
66 66  
67 -As a result of the operation of the insulation fault protection, the error “Insulation fault” is generated. Conditions for generating the error:
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.
68 68  
69 -* presence of the “Insulation status” signal during the “Delay before setting the error” time.
70 -
71 -Conditions for clearing the error:
72 -
73 -* no “Insulation status” signal during the “Delay before clearing the error” time.
74 -
75 75  (% class="box warningmessage" %)
76 76  (((
77 -If there is the "Insulation fault" error, **the critical error flag is generated and all battery contactors open.**
120 +If there is the "Insulation fault" error, **the critical error flag is generated.**
78 78  )))
79 79  
80 80  === Contactor feedback ===
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83 83  
84 84  Contactor feedback protection is configured in the “Protections – Contactor feedback” section:
85 85  
86 -[[image:1734356776695-557.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="67" width="600"]]
129 +[[image:1734356776695-557.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="89" width="800"]]
87 87  
88 88  In this section:
89 89  
... ... @@ -102,7 +102,7 @@
102 102  
103 103  (% class="box warningmessage" %)
104 104  (((
105 -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.**
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.**
106 106  )))
107 107  
108 108  === Module offline ===
... ... @@ -111,46 +111,53 @@
111 111  
112 112  Protection against loss of communication with battery modules is configured in the "Protections - Module offline" section:
113 113  
114 -[[image:1734356793441-881.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="75" width="600"]]
157 +[[image:1740754588971-137.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
115 115  
116 116  In this section:
117 117  
118 -* Enable – a flag to enable the protection;
119 -* Delay before setting the error;
120 -* Delay before clearing the error;
121 -* Lock – a flag to block the error until the device is restarted.
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.
122 122  
123 -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:
167 +As a result of the protection from loss of communication with battery modules, the "Module offline" error is generated.
124 124  
125 -* at least one of the battery modules does not respond to commands within the "Delay before setting the error" time.
169 +Error generation conditions:
126 126  
127 -Conditions for clearing the error:
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.
128 128  
129 -* all battery modules respond to commands within the "Delay before clearing the error" time.
173 +Conditions for removing the error:
130 130  
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 +
131 131  (% class="box warningmessage" %)
132 132  (((
133 -If there is the "Module offline" error, **the critical error flag is generated and all battery contactors open.**
179 +If there is the "Module offline" error, **“Critical error” is generated.**
134 134  )))
135 135  
136 -=== Voltage unbalance ===
182 +=== Voltage unbalance (in any state) ===
137 137  
138 138  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.
139 139  
140 -Protection against voltage unbalance of battery modules is configured in the section "Protections - Voltage unbalance":
186 +Protection against voltage unbalance of battery modules is configured in the section "Protections - Voltage unbalance (in any state)":
141 141  
142 -[[image:1734356793449-249.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="75" width="600"]]
188 +[[image:1740754732291-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
143 143  
144 144  In this section:
145 145  
146 146  * Enable – a flag to enable the protection;
147 147  * Delta voltage – maximum allowable voltage difference of battery modules, V;
194 +* Use the open circuit voltage to detect the error – a flag to enable Uocv correction;
148 148  * Delay before setting the error;
149 149  * Delay before clearing the error;
197 +* Set the 'V'
150 150  * Lock – a flag to block the error until the device is restarted.
151 151  
152 -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:
200 +As a result of the operation of the voltage unbalance protection the errors “Voltage unbalance (CH)” and “Voltage unbalance (DCH)” are generated.
153 153  
202 +Conditions for generating the error:
203 +
154 154  * 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.
155 155  
156 156  Conditions for clearing the error:
... ... @@ -157,15 +157,13 @@
157 157  
158 158  * battery module is in the largest group of balanced modules during the "Delay before clearing the error" time.
159 159  
160 -If there is the error "Voltage unbalance (CH)" ("Voltage unbalance (DCH)"), the charging (discharging) contactor of the battery module opens.
210 +=== Current unbalance (in “Balancing” state) ===
161 161  
162 -=== Current unbalance ===
163 -
164 164  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.
165 165  
166 166  Protection against current unbalance of battery modules is configured in the section "Protections - Current unbalance":
167 167  
168 -[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="77" width="600"]]
216 +[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
169 169  
170 170  In this section:
171 171  
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