Product Description

Features：

1.Protection Circuit Board for 71.4V 17S 40A Li-ion and Li-polymer battery pack;

2.BMS applies for 17 cells Li-ion/Li-polymer battery pack;

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.

(Note: the pictures or parameters in this data sheet are only for your reference, those possibly could be different from the ones you will order. Due to the upgrading of the Hardware/Firmware/Software,Characteristics subject to change without notice, for more information, please contact our technical engineers by email: tech@sunbesthk.com

 Specifications：
 

Item	Contents		Criteria (Adjustable from software/hardware)
1	Model	BEST-####	27S~32S-35A working current
2	Voltage	Charging voltage	113.4V~134.4V
3	Current	Maximal continuous charging current	80A (adjustable from hardware)
		Maximal continuous discharging current	80A (adjustable from hardware)
		Current consumption	≤200μA
4	Overcharge Protection	Over charge detection voltage	Adjustable from software
		Over charge detection delay time	Adjustable from software
		Over charge release voltage	Adjustable from software
5	Over Discharge Protection	Over discharge detection voltage	Adjustable from software
		Over discharge detection delay time	Adjustable from software
		Over discharge release voltage	Adjustable from software
6	Over Current Protection	Over current detection voltage	Adjustable from software
		Over current detection current	Adjustable from software and hardware
		Detection delay time	Adjustable from software
		Release condition	Adjustable from software
7	Short Circuit Protection	Detection condition	Adjustable from software
		Detection delay time	Adjustable from software
		Release condition	Cut load, automatically recover
8	Balance On @ ≥50mV±5mV OFF @ ≤30mV±5mV	Balance voltage for single cell	Adjustable from software
		Balance current for single cell	Adjustable from hardware
9	Resistance	Inner resistance	≤20mΩ
10	Temperature	Single cell temperature when discharge (over temp. protection) ≥65℃	Adjustable from software
		Single cell temperature when discharge (low temp. protection) <-40℃	Adjustable from software
		Single cell temperature when Charge (over temp. protection) ≥50℃	Adjustable from software
		Single cell temperature when Charge (low temp. protection) <0℃	Adjustable from software
11	Fuel/Gas gauge	Display with  LEDs	Thru one button to check capacity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Self-consumption in different working modes:

·         Normal Operating Mode: 13mA typical, 18mA maximum self-consumption.

·         Sleep Mode: 200μA typical, 300μA maximum self-consumption. 

·         The system automatically back to normal operating mode from sleeping mode if current is <2A after no communication signal for 60mins.

·         The system also will be back from sleep mode to normal operating mode if any charge or discharge activity is detected or if there’s communication signal again

Voltage protection

·         As soon as one cell’s voltage exceeds the protection point, the charging process will be interrupted on the whole pack. The protection circuit returns to normal conditions as soon as all the cell’s voltage falls back to normal. Thedischarge will be allowed and the cell balancing will be activated.

         As soon as one cell’s voltage is under the protection point, the discharging process will be interrupted on the whole pack, BMS will be in energy-saving mode, The protection circuit returns to normal operation mode as soon as all the cell’s voltage charged back to normal. When BMS protected up on discharging, the charging processing is still allowed.

Current protection

Software:As soon as the discharging current exceeds the over current detection current during the detection delay time, the discharging process will be interrupted. The BMS returns to normal conditions after over current detection current released.

Hardware:As soon as the discharging current exceeds the over current detection current during the detection delay time, the discharging process will be interrupted. The BMS returns to normal conditions after over current detection current released.

ESD:Battery is protected against electrical discharges:

- 15kV air

- 8kV contact

Price Terms︰ FOB SHENZHEN

Payment Terms︰ TT/PAYPAL/WEST UNION/ESCROW

Packing︰ EXPORT CARTON BOX

Lead Time︰ 7 BUSINESS DAYS AFTER RECEIVE YOUR PAYMENT

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