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Changes for page 3.4 Protections

Last modified by Admin on 2025/06/11 15:57
From version 1.1
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To version 5.2
edited by Admin
on 2025/02/28 14:56
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1 -drafts.BMS Main X.3\. Configuration.WebHome
1 +Battery management systems.BMS Main X.3\. Configuration.WebHome
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4 4  (% data-numbered-headings-start="4" style="--numbered-headings-start: 3;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
5 5  == Protections ==
6 6  
7 -The BMS Main X 2.x monitors the battery modules, compares the voltages and currents of the modules, and protects the battery system from damage.
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 +
9 9  === Battery cover ===
10 10  
11 11  The BMS Main X device detects the opening of the battery cover and performs a protective opening of the contactors.
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12 12  
13 13  Battery cover protection is configured in the "Protections - Battery cover" section:
14 14  
15 -[[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"]]
16 16  
17 17  In this section:
18 18  
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31 31  
32 32  (% class="box warningmessage" %)
33 33  (((
34 -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.**
35 35  )))
36 36  
37 37  === Insulation ===
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40 40  
41 41  Insulation protection is configured in the "Protections - Insulation" section:
42 42  
43 -[[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"]]
44 44  
45 45  In this section:
46 46  
47 -* Enable – a flag to enable the protection;
48 -* Delay before setting the error;
49 -* 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;
50 50  * Lock – a flag to block the error until the device is restarted.
51 51  
52 -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.
53 53  
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 -
60 60  (% class="box warningmessage" %)
61 61  (((
62 -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.**
63 63  )))
64 64  
65 65  === Contactor feedback ===
66 66  
67 -The BMS Main X 2.x device detects the feedback signals from the main contactors and, in the event of a discrepancy between the feedback signals from the control signals, performs a protective opening of the contactors.
125 +The BMS Main X device detects the feedback signals from the main contactors and, in the event of a discrepancy between the feedback signals from the control signals, performs a protective opening of the contactors.
68 68  
69 69  Contactor feedback protection is configured in the “Protections – Contactor feedback” section:
70 70  
71 -[[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"]]
72 72  
73 73  In this section:
74 74  
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87 87  
88 88  (% class="box warningmessage" %)
89 89  (((
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.**
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.**
91 91  )))
92 92  
93 93  === Module offline ===
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146 146  
147 147  === Current unbalance ===
148 148  
149 -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 2.x device detects modules with high balancing currents and generates “Current unbalance (CH)” (charge circuit) and “Current unbalance (DCH)” (discharge circuit) errors for them.
207 +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.
150 150  
151 151  Protection against current unbalance of battery modules is configured in the section "Protections - Current unbalance":
152 152  
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172 172  
173 173  === Charging current unbalance ===
174 174  
175 -During battery charging, the currents of the battery modules may vary. The BMS Main X 2.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.
233 +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.
176 176  
177 177  Protection against different charge currents is configured in the "Protections – Charging current unbalance" section:
178 178  
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198 198  
199 199  === Discharging current unbalance ===
200 200  
201 -During battery discharging, the currents of the battery modules may vary. The BMS Main X 2.x device detects modules whose discharging currents are significantly different from the currents of other modules and generates the “Discharging current unbalance” errors for them.
259 +During battery discharging, the currents of the battery modules may vary. The BMS Main X device detects modules whose discharging currents are significantly different from the currents of other modules and generates the “Discharging current unbalance” errors for them.
202 202  
203 203  Protection against different discharge currents is configured in the "Protections – Discharging current unbalance" section:
204 204  
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