2. Connection

Last modified by Admin on 2025/03/18 12:58

Connection

Safety rules

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.

Device connectors

The location and designation of the connectors are shown on figure below.

Headers

Х1 – mini-USB connector for communication with PC.

X2 – battery cells emulator connector

Pin	Name	Description
1	V-	Minus of the cell stack
2	C2	Cell 2
3	C4	Cell 4
4	C6	Cell 6
5	C8	Cell 8
6	C10	Cell 10
7	C12	Cell 12
8	C14	Cell 14
9	C16	Cell 16
10	C18	Cell 18
11	NC	-
12	NC	-
13	C1	Cell 1 (minimum potential with respect to V-)
14	C3	Cell 3
15	C5	Cell 5
16	C7	Cell 7
17	C9	Cell 9
18	C11	Cell 11
19	C13	Cell 13
20	C15	Cell 15
21	C17	Cell 17
22	-	-

Х3, X4 – RS-485 interface connectors for communication with BMS Logic

Pin	Name	Description
1	RS485_A	A line of the external RS-485 bus
2	RS485_B	B line of the external RS-485 bus
3	5V	Galvanically isolated external voltage for BMS Logic supply
4	GND	Galvanically isolated ground