Wiki source code of 2. Installation and connection

Version 8.3 by Admin on 2025/02/20 13:18

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1.1	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 =
	3
	4	== Installation procedure ==
	5
6.1	6	The mounting area of the BMS Mini must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Mini 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.
1.1	7
	8	The installation site must provide convenient access for subsequent connection to the device’s headers for connecting other system elements: a current sensor, contactors, display panels.
	9
6.1	10	The BMS Mini 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.
1.1	11
6.1	12	Overall and mounting dimensions of the BMS Mini are shown on figures below.
1.1	13
	14	[[image:1733738313780-948.png\|\|data-xwiki-image-style-alignment="center" height="442" width="547"]]
	15
	16	[[image:1733738313786-252.png\|\|data-xwiki-image-style-alignment="center" height="150" width="545"]]
	17
2.1	18	\|(((
1.1	19	Parameter
	20	)))\|Value
2.1	21	\|(((
1.1	22	Overall dimensions (length × width × height), mm
	23	)))\|139.5 × 117 × 17
	24	\|Mounting dimensions (length × width), mm\|130 × 111
	25	\|Mounting holes\|M3
7.1	26	\|Headers X1, X3-X9 type\|Molex series Micro-Fit
1.1	27
	28	== Headers ==
	29
6.1	30	There are names and locations of the BMS Mini headers on figure below.
1.1	31
	32	[[image:1733738660900-622.png\|\|data-xwiki-image-style-alignment="center" height="379" width="508"]]
	33
8.2	34	=== Х1 – header for contactors ===
1.1	35
8.2	36	Receptacle Housing: Molex 430251800. Terminals: Molex 43030
	37
1.1	38	[[image:1733738660904-795.jpeg\|\|data-xwiki-image-style-alignment="center" height="96" width="316"]]
	39
	40	\|Pin\|Name\|Description
	41	\|1\|-\|-
	42	\|2\|+12V\|Supply voltage from the internal 12V DC/DC converter
	43	\|3\|GND\|Ground
	44	\|4\|+12V\|Supply voltage from the internal 12V DC/DC converter
	45	\|5\|GND\|Ground
	46	\|6\|+12V\|Supply voltage from the internal 12V DC/DC converter
	47	\|7\|GND\|Ground
	48	\|8\|+12V\|Supply voltage from the internal 12V DC/DC converter
	49	\|9\|GND\|Ground
	50	\|10\|-\|-
	51	\|11\|FB1\|Feedback signal from contactor 1
	52	\|12\|OUT1\|Contactor control 1 (low side switch), 100V, max 5A
	53	\|13\|FB2\|Feedback signal from contactor 2
	54	\|14\|OUT2\|Contactor control 2 (low side switch), 100V, max 5A
	55	\|15\|FB3\|Feedback signal from contactor 3
	56	\|16\|OUT3\|Contactor control 3 (low side switch), 100V, max 5A
	57	\|17\|FB4\|Feedback signal from contactor 4
	58	\|18\|OUT4\|Contactor control 4 (low side switch), 100V, max 5A
	59
	60	(% class="box warningmessage" %)
	61	(((
	62	ATTENTION!!!
	63	The load should be connected to +12V and OUTx pins. The feedback signal should be connected to FBx and GND pins. Below is an example of connecting the BMS to a contactor:
	64	)))
	65
4.1	66	[[image:1733738760833-185.png\|\|data-xwiki-image-style-alignment="center" height="220" width="332"]]
1.1	67
	68	=== X2 – mini-USB connector. ===
	69
	70	Mini0USB connector is used for configuring the BMS via ElectricDeviceMonito
	71
8.2	72	=== X3 – header for discrete inputs and outputs signals ===
1.1	73
8.2	74	(% class="wikigeneratedid" %)
	75	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	76
	77
	78
	79
	80
	81
	82
	83
	84	(% class="wikigeneratedid" %)
	85	[[image:1733738860923-996.png\|\|data-xwiki-image-style-alignment="center" height="90" width="283"]]
	86
1.1	87	\|Pin\|Name\|Description
	88	\|1\|DIN1\|Discrete input 1 “dry contact” (+5V)
	89	\|2\|DIN2\|Discrete input 2 “dry contact” (+5V)
	90	\|3\|DIN3\|Discrete input 3 “dry contact” (+5V)
	91	\|4\|DIN4\|Discrete input 4 “dry contact” (+5V)
	92	\|5\|DOUT1\|Discrete output 1 (+5V, 20mA)
	93	\|6\|DOUT2\|Discrete output 2 (+5V, 20mA)
	94	\|7\|DOUT3\|Discrete output 3 (+5V, 20mA)
	95	\|8\|DOUT4\|Discrete output 4 (+5V, 20mA)
	96	\|9\|GND\|Discrete input 1 “dry contact” (ground)
	97	\|10\|GND\|Discrete input 2 “dry contact” (ground)
	98	\|11\|GND\|Discrete input 3 “dry contact” (ground)
	99	\|12\|GND\|Discrete input 4 “dry contact” (ground)
	100	\|13\|GND\|Discrete output 1 (ground)
	101	\|14\|GND\|Discrete output 2 (ground)
	102	\|15\|GND\|Discrete output 3 (ground)
	103	\|16\|GND\|Discrete output 4 (ground)
	104
8.2	105	=== Х4 – header for САN and RS485 interfaces ===
1.1	106
8.2	107	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	108
1.1	109	[[image:1733738660905-974.jpeg\|\|data-xwiki-image-style-alignment="center" height="70" width="97"]]
	110
	111	\|Pin\|Name\|Description
	112	\|1\|RS485_B\|RS485 line B
	113	\|2\|+5V\|Isolated supply voltage 5V, max 400mA
	114	\|3\|CAN_L\|CAN-L line of the CAN bus
	115	\|4\|RS485_A\|RS485 line A
	116	\|5\|GND\|Isolated ground
	117	\|6\|CAN_H\|CAN-H line of the CAN bus
	118
8.2	119	=== Х5 – header for ON/OFF button ===
1.1	120
8.2	121	Receptacle Housing: Molex 430250200. Terminals: Molex 43030
	122
	123	(% class="wikigeneratedid" %)
	124	[[image:1733739076878-324.png\|\|data-xwiki-image-style-alignment="center" height="70" width="41"]]
	125
1.1	126	\|Pin\|Name\|Description
	127	\|1\|BTN\|Signal to turn on/off the BMS (“dry contact”, +3.3V)
	128	\|2\|GND\|Signal to turn on/off the BMS (“dry contact”, ground)
	129
8.2	130	=== X6 – header for cells temperature sensors ===
1.1	131
8.2	132	Receptacle Housing: Molex 430251200. Terminals: Molex 43030
	133
1.1	134	[[image:1733738660906-697.png\|\|data-xwiki-image-style-alignment="center" height="91" width="190"]]
	135
	136	\|Pin\|Name\|Description
	137	\|1\|TEMPG1\|Ground of the thermistor 1
	138	\|2\|TEMPG2\|Ground of the thermistor 2
	139	\|3\|TEMPG3\|Ground of the thermistor 3
	140	\|4\|TEMPG4\|Ground of the thermistor 4
	141	\|5\|TEMPG5\|Ground of the thermistor 5
	142	\|6\|TEMPG6\|Ground of the thermistor 6
	143	\|7\|TEMP1\|Signal from the thermistor 1
	144	\|8\|TEMP2\|Signal from the thermistor 2
	145	\|9\|TEMP3\|Signal from the thermistor 3
	146	\|10\|TEMP4\|Signal from the thermistor 4
	147	\|11\|TEMP5\|Signal from the thermistor 5
	148	\|12\|TEMP6\|Signal from the thermistor 6
	149
8.2	150	=== X7 - header for current sensor ===
1.1	151
8.2	152	(% class="wikigeneratedid" %)
	153	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	154
	155
	156
	157
	158
	159
	160
	161
	162	(% class="wikigeneratedid" %)
	163	[[image:1733739118831-618.png\|\|data-xwiki-image-style-alignment="center" height="79" width="71"]]
	164
1.1	165	\|Pin\|Name\|Description
	166	\|1\|+5V\|Supply voltage for a current sensor 5V, max 50 mA
	167	\|2\|GND\|Ground
	168	\|3\|Vcs\|ADC input (current sensor output)
	169	\|4\|Vref\|Auxiliary ADC input (current sensor reference signal)
	170
	171	=== Х8 – header for battery cells ===
	172
8.3	173	Receptacle Housing: Molex 430252000. Terminals: Molex 43030
8.2	174
1.1	175	[[image:1733738660908-107.jpeg\|\|data-xwiki-image-style-alignment="center" height="83" width="291"]]
	176
	177	\|Pin\|Name\|Description
	178	\|1\|C0\|Minus of the cell stack (for measuring purposes only)
	179	\|2\|C2\|Cell 2
	180	\|3\|C4\|Cell 4
	181	\|4\|C6\|Cell 6
	182	\|5\|C8\|Cell 8
	183	\|6\|C10\|Cell 10
	184	\|7\|C12\|Cell 12
	185	\|8\|C14\|Cell 14
	186	\|9\|C16\|Cell 16
	187	\|10\|C18\|Cell 18 (maximum potential of the cell stack, for measuring purposes only)
	188	\|11\|NC\|Not connected
	189	\|12\|C1\|Cell 1 (minimum potential with respect to C0)
	190	\|13\|C3\|Cell 3
	191	\|14\|C5\|Cell 5
	192	\|15\|C7\|Cell 7
	193	\|16\|C9\|Cell 9
	194	\|17\|C11\|Cell 11
	195	\|18\|C13\|Cell 13
	196	\|19\|C15\|Cell 15
	197	\|20\|C17\|Cell 17
	198
	199	=== Х9 – header to power the device ===
	200
	201	[[image:1733738660910-242.png\|\|data-xwiki-image-style-alignment="center" height="61" width="78"]]
	202
	203	\|Pin\|Name\|Description
	204	\|1\|VBAT+\|Supply voltage for BMS Mini
6.1	205	\|2\|VBAT-\|BMS Mini power ground
1.1	206
	207	(% class="box warningmessage" %)
	208	(((
6.1	209	Attention! The BMS Mini device is galvanically connected to the battery (the minus of the battery is the device ground). In view of this, when a BMS Wi-Fi or BMS GSM module is connected to the device, the antenna braid will also be galvanically connected to the battery (connected to the battery negative). It is recommended to isolate the antenna cable from the battery case to prevent negative potential from appearing on the case.
1.1	210	)))
	211
	212	=== J1 – jumper for switching CAN bus terminal resistor ===
	213
2.1	214	To connect the terminal resistor between the CAN_H and CAN_L lines, install the jumper J1 according to the following figure:
1.1	215
	216	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	217
	218	=== J2 – jumper for switching RS-485 terminal resistor ===
	219
2.1	220	To connect the terminal resistor between the RS485_A and RS485_B lines, install the jumper J1 according to the following figure:
1.1	221
	222	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	223
	224	== Connection procedure ==
	225
	226	=== Connecting battery cells ===
	227
	228
	229	To connect battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Mini.
	230
	231	Begin the connection with the negative line of the battery: the “C0“ is connected to the “B-“, then the first cell (C1) is connected, then the second (С2), etc. If not all inputs of the cells are used, then the remaining inputs are connected to the cell with the most potential.
	232
2.1	233	[[image:1733738660912-678.png\|\|data-xwiki-image-style-alignment="center" height="326" width="650"]]
1.1	234
	235	(% class="box warningmessage" %)
	236	(((
	237	Attention!
	238	Connect the battery according to the diagram, otherwise the device may be damaged.
	239	)))
	240
	241	=== Connecting thermistors ===
	242
	243	Thermistors should be fastened to the cells, excluding short circuits to the cell terminals (for example, isolate thermistors with heat shrink).
	244
	245	[[image:1733738660915-688.png\|\|data-xwiki-image-style-alignment="center"]]
	246
	247

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