SOLAX 0148083 BMS Parallel Box-II for Parallel Connection of 2 Battery Strings

Packing List (BMS Parallel Box-II)

Note: The Quick Installation Guide briefly describes required installation steps. If you have any questions, refer to the Installation Manual for more detailed information.

Packing ListPower Cable (-) x1(2m)
Power Cable (+) x1(2m)

Packing ListPower Cable (-) x2(1m)
Power Cable (+) x2(1m)

Packing ListRS485 Cable x2(1m)
CAN Cable x1(2m)

Packing ListRotation Wrenchx1
Power cable disassembling toolx1

Packing ListExpansion screwx2

Packing ListExpansion tubex2

Packing ListRing Terminal x1
Grounding Nutx1

Packing ListInstallation Manual x1

Packing ListQuick Installation Guide x1

Terminals of the BMS Parallel Box-II

Terminals of the BMS Parallel

Object Object Description
I RS485-1 Battery module communication of group 1
II B1+ Connector B1+ of Box to + of battery module of group 1
III B2- Connector B1- of Box to – of battery module of group 1
IV RS485-2 Battery module communication of group 2
V B2+ Connector B2+ of Box to + of battery module of group 2
VI B2- Connector B2- of Box to – of battery module of group 2
VII BAT+ Connector BAT+ of Box to BAT+ of inverter
VII BAT- Connector BAT- of Box to BAT- of inverter
IX CAN Connector CAN of Box to CAN of inverter
X / Air Valve
XI GND
XII ON/OFF Circuit Breaker
XIII POWER Power Button
XIV DIP DIP Switch

Installation Prerequisites

Ensure that the installation location meets the following conditions:

  • The building is designed to withstand earthquakes
  • The location is far from the sea to avoid salt water and humidity, over 0.62 miles
  • The floor is flat and level
  • There are no flammable or explosive materials, at a minimum of 3ft
  • The ambience is shady and cool, away from heat and direct sunlight
  • The temperature and humidity remains at a constant level
  • There is minimal dust and dirt in area
  • There are no corrosive gases present, including ammonia and acid vapor
  • Where charging and discharging, the ambient temperature ranges from 32°F to 113°F

In practice, the requirements of battery installation may be different due to environment and locations. In that case, follow up the exact requirements of the local laws and standards.

SymbolNOTE!
The Solax battery module is rated at IP55 and thus can be installed outdoors as well as indoors. However, if installed outdoors, do not allow the battery pack to be exposed to direct sunlight and moisture.
SymbolNOTE!
If the ambient temperature exceeds the operating range, the battery pack will stop operating to protect itself. The optimal temperature range for operation is 15°C to 30°C. Frequent exposure to harsh temperatures may deteriorate the performance and lifetime of the battery module.
SymbolNOTE!
When installing the battery for the first time, the manufacturing date between battery modules should not exceed 3 months.

Battery Installation

  • The bracket needs to be removed from the box.
    Battery Installation
  • Lock the joint between hanging board and wall bracket with M5 screws. (torque (2.5-3.5)Nm)
    Battery Installation
  • Drill two holes with driller
  • Depth: at least 3.15in
    Battery Installation
  • Match the box with the bracket. M4 screws. (torque:(1.5-2)Nm)
    Battery Installation

Overview of Installation

SymbolNOTE!

  • If the battery is not used for more than 9 months, the battery must be charged to at least SOC 50 % each time.
  • If the battery is replaced , the SOC between the batteries used should be as consistent as possibe, with a maxium difference of ±5 %.
  • If you want to expand your battery system capacity, please make sure your existing system capacity’s SOC is about 40%. The expansion battery is required to be manufactured within 6 months; If more than 6 months, recharge the battery module to about 40%.
    Overview of Installation

Connecting Cables to Inverter

Step l. Strip the cable(A/B:2m) to 15mm.

Box to Inverter:
BAT+ to BAT+;
BAT- to BAT-;
CAN to CAN

Connecting Cables to Inverter

Step 2. Insert the stripped cable up to the stop (negative cable for DC plug(-) and
positive cable for DC socket(+) are live). Hold the housing on the screw
connection.
Connecting Cables to Inverter
Step 3. Press down the spring clamp until it clicks audibly into place (You should be able to see the fine wie strands in the chamber)
Connecting Cables to Inverter
Step 4. Tighten the screw connection(tightening torque:2.0±0.2Nm)
Connecting Cables to Inverter

Connecting to Battery Modules

Connecting to Battery Modules

Battery Module to Battery Module

Battery module to battery module(Get the cables through the conduit):

  1. “YPLUG” on the right side of HV11550 to “XPLUG” on the left side of the next battery module.
  2. “-” on the right side of HV11550 to “+” on the left side of the next battery module.
  3. “RS485 I” on the right side of HV11550 to “RS485 II” on the left side of the next battery module.
  4. The rest battery modules are connected in the same way.
  5. Insert the series-connected cable at “-” and “YPLUG” on the right side of last battery module to make a complete circuit.
    Battery Module to Battery Module

Communication Cable Connection

For Box:
Insert one end of the CAN communication cable without cable nut directly to the CAN port of the Inverter. Assemble the cable gland and tighten the cable cap.

For battery moudels:
Connect the RS485 II communication system on the right side to RS485 I of the subsequent battery module on the left side.
Note: There is a protection cover for the RS485 connector. Unscrew the cover and plug one end of the RS485 communication cable to the RS485 connector. Tighten the plastic screw nut which is set on the cable with a rotation wrench.

Communication Cable Connection

Ground Connection

The terminal point for GND connection is as shown below(torque:1.5Nm):
Ground Connection

SymbolNOTE!
GND connection is mandatory!

Commissioning

If all the battery modules are installed, follow these steps to put it in operation

  1. Configure the DIP to the corresponding number according to the number of battery module(s) that has (have) been installed
  2. Remove the cover board of the box
  3. Move the circuit breaker switch to the ON position
  4. Press the POWER button to turn on the box
  5. Re-install the cover board to the box
  6. Turn on the inverter AC switch
    Commissioning

Configuration activated by inverter::
0- Matching a single battery group(group 1 or group2)
1- Matching both battery groups(group 1 and group2).

Commissioning

Symbol NOTE!
If DIP switch is 1, the number of batteries in each group must be the same.

Documents / Resources

SOLAX 0148083 BMS Parallel Box-II for Parallel Connection of 2 Battery Strings [pdf] Installation Guide
0148083, BMS Parallel Box-II for Parallel Connection of 2 Battery Strings, 0148083 BMS Parallel Box-II for Parallel Connection of 2 Battery Strings

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