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Battery Protection Circuit Module (BMS/PCM) for 5S 18.5V Li-ion/Li-Polymer Battery Packs

Part number: HCX-D900V1

Features and Benefits

1.Protection Circuit Board for 18.5V 5S Li-ion and Li-Polymer battery pack;

2.PCM applies for 5 cells Li-ion/Li-Polymer battery pack with E-Switch integrated, E-Switch can totally turn off the output;

3.To prevent the battery packs from overcharge,overdischarge,over current, over temperature ,short circuit ;

4.With cell balance/equilibrium function;

5.Compatible with both Li-ion and Li-Polymer cells; 

6.How balancing function works? After battery pack is fully charged. PCM will detect each cell's voltage and trim higher voltage down until other cells reach the same voltage level. Therefore, it helps cells have longer service life.

7.PCM comes with all the voltage detection wires and connectors.

Specifications

 

Item

Contents

Criteria (Adjustable)

1

Model

HCX-D900V1 77905

5S-120A working current

2

Voltage

Charging voltage

21V

3

Current

Maximal continuous charging current

120A

Maximal continuous discharging current

120A

Current consumption

35μA

4

Overcharge Protection

Over charge detection voltage

4.2V~4.35V(Adjustable)

Over charge detection delay time

0.7-1.4S

Over charge release voltage

4.0V~4.2V(Adjustable)

5

Over Discharge Protection

Over discharge detection voltage

2.3V~3.0V(Adjustable)

Over discharge detection delay time

0.5-1.5S

Over discharge release voltage

2.3V~3.0V(Adjustable)

6

Discharge

Over Current Protection

(1st Protection)

Over current detection current R=0.5mR/70

Adjustable 

Detection delay time

700ms±100

Release condition

Cut load & charge to recover

7

Discharge

Over Current Protection

(2nd Protection)

Over current detection current R=0.5mR/140

Adjustable 

Detection delay time

90ms±15

Release condition (delay: 100ms)

Cut load & charge to recover

8

Short Circuit Protection

Short circuit detection current

800 (actual testing is needed)

Detection delay time

200-600us

Detection condition

Cut load/charge to recover

9

Balance

Balance voltage for single cell

4.20±0.020V 

Balance current for single cell

20mA±6mA

10

Temperature Protection

 

10KNTC B=3435

 

Charge Over Temp Protection

50℃±2

Discharge Over Temp Protection

70℃±2

Charge Under Temp Protection

-3℃±2

discharge Under Temp Protection

-20℃±2

Temp. Protection delay

2S±1S

14

Resistance

Inner resistance P- B-

1.0mΩ

15

Temperature

Operating temperature range

0 ~ +65°C

Storage temperature range

0 ~ +85°C

16

Size (L*W*T)

L202mm*W96mm*T12mm (including heat-sink on top of BMS)

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