Home->PCM for Li-ion/Li-Polymer Battery Packs ->For 20S~32S Packs (74V~118.4V)-> For 20S Packs (74V)

Battery Protection Circuit Module (BMS/PCM) for 20S 74V Li-ion/Li-Polymer Battery Packs

Part number: HCX-D828

Features and Benefits

1.Protection Circuit Board for 74V 20S Li-ion and Li-Polymer battery pack;

2.PCM applies for 20 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-D828/ 367008-AAD

20S-80A working current

2

Voltage

Charging voltage

84V

3

Current

Maximal continuous charging current

40A

Maximal continuous discharging current

80A

Current consumption

≤50μA

4

Overcharge Protection

Over charge detection voltage

4.2V~4.35V(Adjustable)

Over charge detection delay time

0.8-1.4s

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

1s

Over discharge release voltage

2.3V~3.0V(Adjustable)

6

Over Current Protection

(1st Protection)

Over current detection current / Voltage

Adjustable

Detection delay time

100mS±30mS

Release condition

Cut load / charge to recover

7

Over Current Protection

(2nd Protection)

Over current detection current

Adjustable

Detection delay time

10±5ms

Release condition

Cut load / charge to recover

8

Short Circuit Protection

Short circuit detection current

Adjustable
(need actual testing by customer)

Detection delay time

280uS - 500us

Detection condition

Cut load/charge to recover

9

Balance

Balance voltage for single cell

4.18V±0.02V

Balance current for single cell

42mA±5mA

10

Temperature Protection

Protection delay

4.5s

NTC (10KNTC B=3435)

Dis-CH @ 75±5°C / CH @55±5°C

11

Resistance

Inner resistance

≤20mΩ

12

Temperature

Operating temperature range

0 ~ +85°C

Storage temperature range

0 ~ +85°C

13

Size (L*W*T)

L150mm*W75mm*T18mm

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