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Wiki source code of 2. Installation and connection

Version 12.1 by Admin on 2025/03/18 12:51
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Admin 5.1 1 (% data-numbered-headings-start="2" style="--numbered-headings-start: 1;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
2 = Installation and connection =
Admin 1.1 3
Admin 11.1 4 == ​​​​​Safety rules ==
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Admin 11.1 6 Before use, **configure the system**. Proper operation of the BMS is possible only if it is correctly configured.
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8 It is not recommended to use the system in batteries formed by several series of cells connected in parallel. To increase capacity, it is recommended to connect several cells in parallel groups, and then connect the groups in series.
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Admin 12.1 10 (% class="box errormessage" %)
Admin 11.1 11 (((
12 The BMS can be connected to batteries with life-threatening and health-hazardous voltage levels. When working with high-voltage batteries, observe electrical safety regulations, use safety glasses, protective clothing, insulated tools and appliances. To prevent the damage of device avoid electrostatic discharges while working with the battery.
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15 == Installation procedure ==
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Admin 1.1 17 The mounting area of the BMS Logic 2.0 must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Logic 2.0 is recommended to be placed close to the cells it controls, but away from high current circuits to reduce interference to measuring circuits and increase overall reliability of installation.
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19 The installation site must provide convenient access for subsequent connection to the device’s headers.
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21 The BMS Logic 2.0 has a heat sink to dissipate the heat generated during the balancing of the cells. When used in enclosed enclosures, heat must be removed from the sink, otherwise it may damage the device.
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23 Overall and mounting dimensions of the BMS Logic 2.0 are shown below.
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25 [[image:1733148558528-694.png||data-xwiki-image-style-alignment="center" height="310" width="504"]]
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27 |**Parameter**|**Value**
Admin 2.1 28 |(((
Admin 1.1 29 Overall dimensions (length × width × height), mm
30 )))|125 × 84 × 25
31 |Mounting dimensions (length × width), mm|115 × 50
32 |Mounting holes|M4
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Admin 5.1 34 == Headers ==
Admin 1.1 35
36 The BMS Logic 2.0 is designed to measure battery parameters – temperature (for a stack of 12 cells there are 2 temperature sensors) and the voltages of 12 cells.
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38 [[image:1733148558522-665.png||data-xwiki-image-style-alignment="center" height="381" width="418"]]
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41 (((
42 **Attention!**
Admin 4.1 43 All headers are shown from the device side!
Admin 1.1 44 )))
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Admin 10.1 46 === X1 – header for cells and temperature sensors ===
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Admin 10.1 48 (% class="wikigeneratedid" %)
49 Receptacle Housing: Molex 39012160. Terminals: Molex 5556
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59 [[image:1740053130023-265.png||data-xwiki-image-style-alignment="center"]]
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Admin 1.1 61 |**Pin**|**Name**|**Description**
62 |**1**|**TEMP2**|Signal from the thermistor #2
63 |**2**|**TEMPC**|Ground of the thermistors
64 |**3**|**C11**|Cell #11
65 |**4**|**C9**|Cell #9
66 |**5**|**C7**|Cell #7
67 |**6**|**C5**|Cell #5
68 |**7**|**C3**|Cell #3
69 |**8**|**C1**|Cell #1 (minimum potential with respect to V-)
70 |**9**|**V-**|Minus of the cell stack
71 |**10**|**TEMP1**|Signal from the thermistor #1
72 |**11**|**C12**|Cell #12 (maximum potential of the cell stack)
73 |**12**|**C10**|Cell #10
74 |**13**|**C8**|Cell #8
75 |**14**|**C6**|Cell #6
76 |**15**|**C4**|Cell #4
77 |**16**|**C2**|Cell #2
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Admin 5.1 79 === X2, X3 – headers for communication with BMS Main ===
Admin 1.1 80
Admin 10.1 81 Receptacle Housing: Molex 39012040. Terminals: Molex 5556
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Admin 9.1 83 [[image:1740053153731-112.png||data-xwiki-image-style-alignment="center"]]
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85 |**Pin**|**Name**|**Description**
86 |**1**|**RS485_A**|RS-485 line A for communication with the BMS Main
87 |**2**|**RS485_B**|RS-485 line B for communication with the BMS Main
88 |**3**|**+5V**|Supply voltage 5V
89 |**4**|**GND**|Ground
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Admin 5.1 91 == (% style="color:#333333" %)Switches and indicators(%%) ==
Admin 1.1 92
Admin 5.1 93 === SWD1 – address switch ===
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95 |**Switch number**|**Description**
96 |**1**|The first (the lowest) bit of the address. Position ON - bit is 1
97 |**2**|The second bit is the address. Position ON - bit is 1
98 |**3**|The third bit of the address. Position ON - bit is 1
99 |**4**|The fourth bit of the address. Position ON - bit is 1
100 |**5**|The fifth bit of the address. Position ON - bit is 1
101 |**6**|The sixth (the highest) bit of the address. Position ON - bit is 1
102
Admin 5.1 103 === DS1 – mode indicator ===
Admin 1.1 104
105 |**State**|**Description**
106 |**Blinking**|Communication between the BMS Main and the device is established
107 |**No light**|There is no communication between the BMS Main and the device
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Admin 5.1 109 == Connection procedure ==
Admin 1.1 110
Admin 5.1 111 === Connection to BMS Main ===
Admin 1.1 112
113 To connect the BMS Main to BMS Logic 2.0 do the following steps:
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115 1. Connect the BMS Main to the first BMS Logic 2.0 (P15 -> X3).
116 1. Connect the BMS Logic 2.0 to each other (X2 -> X3).
117 1. Install jumper P1 on the last BMS Logic 2.0 in the chain.
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Admin 3.1 119 (% class="box infomessage" %)
120 (((
121 **Recommendations:**
122 ~1. The total cable length (the sum of the lengths of all cables) between the BMS Main and the last BMS Logic 2.0 should not exceed 500 meters.
123 2. Make all connections with the same cable.
124 3. For a total cable length of more than 10 meters use twisted pair with the 120 Ohm wave impedance.
125 )))
Admin 1.1 126
Admin 5.1 127 === Connecting battery cells ===
Admin 1.1 128
129 To connect the battery cells, follow the picture below. Incorrect connection of the cells can damage the BMS Logic 2.0.
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131 Begin the connection with the negative of the battery: the "V-" of the first BMS Logic 2.0 is connected to "B-", then the first cell (C1) of the battery is connected, then the second (C2), etc. The “V-“ of the next BMS Logic 2.0 is connected to the C12 of the previous BMS Logic 2.0. If not all inputs of the cells are used, then the remaining inputs are connected to the cell with the highest potential.
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133 [[image:1733148558525-686.png||data-xwiki-image-style-alignment="center" height="469" width="614"]]
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137 (((
138 **Attention!**
139 Connect the battery according to the diagram, otherwise the device may be damaged!
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Admin 5.1 142 === Connecting thermistors ===
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144 Thermistors should be fastened to the cells, excluding short circuits to the cell terminals (for example, isolate thermistors with heat shrink). For reliable operation, it is recommended to use all thermistors (1 temperature sensor for 6 cells).
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146 [[image:1733148558527-407.png||data-xwiki-image-style-alignment="center" height="356" width="277"]]
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