2021

O r a n g e LiFePO4 B M S

8S 24V 80A0

02 Overview

The major Primary Function of the Battery
Management System (BMS)It Protects the Battery pack f rom being over-charged (cell voltages
going too high) or over-discharged (cell voltages going too low)
thereby extending the life of the battery pack. It does this byconstantly monitoring every cell in the battery pack and calculating
exactly
how much current can safely go in (source, charge) and come out(load, discharge) of thebattery pack without damaging it. These calculated current
limits are then sent to the source (typically a battery charger)
and load (motor controller, power inverter, etc), which areresponsible for respecting these limits.

There are also secondary functions that theBMS performs:
1) Balances all the cells in the battery pack by intelligently bleeding
off excess energy f rom cells that are charged more than others.
This provides the maximum amount of usable energy (capacity)
f rom the battery pack since the pack is only as strong as theweakest cell.
2) Monitors the temperature of the battery pack and controls abattery fan to regulate the temperature of the pack. Additionally,it constantly monitors the output of the fan to make sure it isworking properly.
3) Provides real-time information and values to other devices
such as motor controllers, chargers, displays and data loggers
using several different methods (CANBUS, analog outputs, anddigital outputs).
4) Stores error codes and comprehensive diagnostic information toaide in ﬁxing problems with the battery pack should any issues
arise.

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03Speciﬁcation 0Discharge

Continuous Discharge current:

80 A

ChargeCharge Voltage:
Charge Current:

29.2 V
40 A

Overcharge Protection
Overcharge Detect Voltage:

3.65 ± 0.05 V

Balance

Balance Detect Voltage:
Balance current:

3.525 V30 ± 5 mA

Over Discharge Protection
Over discharge detect:
Over discharge release voltage:

Charging over current protection
Charging overcurrent protection:

Discharge overcurrent protection

Discharge overcurrent protection current:

Inner resistance

Main Circuit Conduct Inner Resistance:

Working Temperature

Main Circuit Conduct Inner Resistance:

2.3 ± 0.1 V
2.7 ± 0.1 V
66±10 A250±50 A< 20 mΩ-20 ~ 70°C

Working Temperature

Main Circuit Conduct Inner Resistance:

www.robu.in-40 ~ 80°C03

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Wiring Connection:mm
19+

P--65mm

P-

B-

Cable Socket

BNTC PH2. 0-2P

150mm

Wiring Diagram
Total Positive

B+

P+
Cable

the last B +the last B -+P-

P-

Battery Pack
B3 +PCB/BMS for Lithium Battery

B3 B2 +

B1 -Total Negative-

B-

Load

B1 +

chargerB2 -B-

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Wiring Operation
1) First connect the B-cable of the protection board to thetotal negative pole of the battery pack.
2) The cable starts f rom the thin black one connecting B-,
the second red cable connects the positive pole of the ﬁrst
string of batteries, and the next string is connected in turn.
The positive pole of the pool; then insert the cable into theprotection board.
3) After ﬁnishing the wiring soldering, measure whether
the battery B+, B-voltage and P+,P-voltage values are thesame, only same, the protection board works positively.
Otherwise. Please follow the above re-operation;4) When removing the protection board, ﬁrst pull out thecable (if there are two cables, pull the high-voltage cableﬁrst, then pull the low-voltage cable), then remove Powercable B-

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06 Warranty

All our produced Lithium battery BMS, we guarantee 1
year’s warranty in quality, except the damage caused due
to Improper human Operation.

Attention1) Lithium battery BMS with different voltage range whichcannot be mixed using., LifePo4 BMS cannot be used for
Li-ion battery.
3) When testing, installing, contacting, and using theprotective board, take measures to put static electricity onit.
4) Mustn’t let the heat dissipation surface of the protection
board directly contact the battery core, otherwise the heat
will be transmitted to the battery core, which will affectthe safety of the battery.
5) Do not disassemble or change the components of theprotection board by yourself.
6) The metal heat sink of the protection board of thecompany is anodized and insulated, and the oxide layer
will still be conductive after being destroyed. Avoid contact
between the heat sink and the battery core and the nickel
strip7) If the protection board is abnormal, please stopusing it. Then use it again after it is checked with OK.
8) Do not use the two protective boards in series or inparallel.
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