EPEVER BMS-LINK BMS Protocol Converter User Manual

: June 3, 2024
: EPEVER

Table of Contents

EPEVER BMS-LINK BMS Protocol Converter
Overview
Characteristics
Connection diagram
Specifications
Disclaimers
References
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EPEVER BMS-LINK BMS Protocol Converter

Overview

BMS-LINK is an external BMS protocol converter with an independent MCU. Setting the “PRO” parameter through the remote meter or PC software after connecting the BMS-LINK to UP-Hi and lithium battery. Different manufacturers’ protocols can be converted into our standard protocol, which improves the actual application’s flexibility. Compared with the traditional built-in BMS protocol conversion module, this converter has stronger application flexibility and expansibility. It is more suitable for our all-in-one products and other products to communicate with the lithium battery BMS.

Features:

Independent MCU
Dual RS485 com. port
Support mul++ti BMS protocols conversion
Freely setting the protocol number
Reliable protocol conversion and communication
Optional remote meter or PC software to set the protocol number
Simple installation and friendly operation

The port connected to the lithium battery is an isolated RS485 communication port, and the port connected to the all-in-one products is a non-isolated RS485 communication port.

Characteristics

No.	Port	Instruction	Note
1	********

TO UP-Hi

| Connect to the BMS interface of the UP-Hi device

(Non-isolated RJ45 port«)

| Cable(Included):

CC-RS485-RS485-350mm

2| ****

TO BMS

| ** Connect to the BMS interface of the lithium battery(Isolated RJ45 port«)| Cable(Optional): Adjust the connection cable according to the lithium battery’s BMS line sequence.
3| **

Status

| Communication status indicator| Green: Normal Red: Abnormal communication

RJ45 Pin Definition:

Pin	Definition	Pin	Definition
1	5VDC	5	RS-485-A
2	5VDC	6	RS-485-A
3	RS-485-B	7	GND
4	RS-485-B	8	GND

Connection diagram

Step1: Connect the BMS-LINK converter to the RS485 port of the all-in-one product and the lithium battery through an RJ45 communication cable.
Step2: Modify the lithium battery’s default ID into the fixed ID through the DIP switch.
Please see the “BMS Lithium Battery Protocols & Fixed ID Table” or contact our technical support department for different manufacturer’s fixed ID.
The DIP switch’s state of different fixed ID is shown below the table. DIP switch Sequence

Fixed ID

| 1| 2| 3| 4| 5| 6
---|---|---|---|---|---|---
0| OFF| OFF| OFF| OFF| OFF| OFF
1| ON| OFF| OFF| OFF| OFF| OFF
2| OFF| ON| OFF| OFF| OFF| OFF
3| ON| ON| OFF| OFF| OFF| OFF
4| OFF| OFF| ON| OFF| OFF| OFF
3. Step3: Modify the “PRO” parameter into the BMS protocol number through the remote meter or PC software(Take the remote meter as an example):

In the real-time interface, press the UP+DOWN button and hold on for 2s to enter the engineer’s operation interface.
Press the UP/DOWN button to select the “PRO” parameter(item 40).
Press the SET/ENTER button and hold on 2s to enter the parameter modifying interface.
Press the UP/DOWN button to modify the “PRO” parameter.
Press the SET/ENTER button to confirm the modification.
Press the ESC button to exit.
Restart the all-in-one product to make sure the BMS protocol number is modified successfully.

Please refer to the “BMS Lithium Battery Protocols & Fixed ID Table” or contact our technical support department for the supported BMS manufacturers and protocols.
Please make sure the lithium battery’s default ID has been modified into the fixed ID before setting.

Specifications

Parameters	BMS Protocol Converter
Input voltage	5VDC (Powered by the UP-Hi connection port)
Serial port baud rate	9600
Communication method	RS485
Connection port	RJ45
Working environment temperature	-20～ 55 ℃
Storage temperature	-35-70 ℃
Altitude	＜5000m
Enclosure	IP30
Humidity range	＜ 95%(N.C.)
Dimension (Length x Width x Height)	67 51 24.5mm
Mounting dimension	67×41.2mm
Mounting Holes	Φ3.2mm
Net Weight	37.9g