High quality 8S electronic products 100A 24V BMS for lifepo4 battery pack with balance and common port for e-bike

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High quality 8S electronic products 100A 24V BMS for lifepo4 battery pack with balance and common port for e-bike
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Features
Specifications
Model Number: HP28SA
Supplier Type: Manufacturer
Product Name: BMS
Current: 100A
Voltage: 24V
Same Port With Balance Function: Yes
Package: Standard Package
Usage: Lifepo4 Battery Pack
Application: Electronic Products
Size: 150*102*15mm
Testing: 100%testing
Basic Infomation
Model Number: HP28SA
Payment & Shipping Terms
Packaging Details: Manufactuers will upgrade the packaging sometimes,please refer to the actual object received.
Product Description
Product Description

JBD-HP28SA

JBD-HP28SA is designed by Dongguan jiabaida Electronic Technology Co., Ltd. It is an intelligent protection board scheme specially designed for 28 series battery packs of electric bicycles and motorcycles. It is suitable for lithium batteries with different chemical properties, such as lithium ion, lithium polymer, lithium iron phosphate, etc.The protection board has strong load carrying capacity and the maximum continuous discharge current can reach 100A. ● 3-28 cell series protection ● Various protection functions for charging and discharging ● Hardware discharge over - current, short - circuit protection function processing ● Reserve discharge control switch and discharge temperature protection positionVery low static consumption currentWith equalization function


Detailed Images
Operating voltage range
20-29.2V
Operating current (MAX)
100A
Over-charge protection voltage
3.65±0.05V
Over-discharge protection voltage
2.5±0.1V
Balanced turn-on voltage
3.45±0.05V
Charging over current protection value
/
Temperature protection value of charging
75℃
Internal resistance
<20mΩ

Protection function description

Overcharge protection: When the battery is under the charging state, the voltage keeps going up. When the protection board detects that the voltage of any cell is higher than the overcharge protection value, the protection board will start timing immediately. When the time reaches the overcharge protection delay, the protection board will turn off the charging MOS tube, at that time, it cannot be charged.
Overcharge protection recovery: After the overvoltage protection appears on the protection board, the battery voltage will going down under the static or discharge state of the battery. When the protection board detects that each voltage is lower than the recovery voltage of the overcharge protection, the protection board will output a signal and turn on the charging MOS tube to charge.
Over-discharge protection: When the battery is under the discharge state, the voltage keeps going down. When the protection board detects that the voltage of any cell is lower than the overcharge protection value, the protection board will start timing immediately. When the time reaches the over discharge protection delay, the output signal of the protection board will turn off the discharge MOS tube, the load lock circuit will work, but, it cannot discharge at this time.
Over discharge protection recovery: After the over discharge protection appears on the protection board, the battery voltage will going up under the static or discharge state of the battery. When the protection board detects that each voltage is higher than the recovery voltage of the over discharge protection. At this time, disconnect the load or charge, the protection board will output a signal and turn on the charging MOS tube to charge.
Overcurrent protection: When the battery is under the static or discharge state, the current suddenly increases. When the protection board detects that the current reaches the overcurrent protection value, the protection board will start timing at that time. When the current duration in the circuit reaches the overcurrent protection delay time, the output signal of the protection board will turn off the discharge MOS tube, and the load lock circuit will work. At this time, the discharge cannot be conducted.
Overcurrent protection recovery: After the discharge overcurrent protection appears on the protection board, the discharge MOS tube is turned off, and the current in the loop becomes 0. At this time, the load is disconnected or charged, the output signal of the protection board will turn on the discharge MOS tube to discharge.

Wiring diagram

matters need attention.
Please note:When assembling the wiring, weld the cable and the cell correctly, connect the B- of the PCM with the total negative pole of the cell, and then insert the cable into the needle base on the PCM. (Note: different connection modes for different strings, and different connection modes for the same port)


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FAQ

1. What type of charger should I choose?

Lithium battery must choose specific charger, do not use Charger for Leadacid battery, for leadacid charger may have MOS with high pressure breakdown protection, which will not protect of BMS over charge. Life Po4 battery charger voltage=battery string No.X3.6V, while Li-ion battery charger voltage=Battery string No.X4.2V.

2.The relationship between Battery capacity and BMS current?

There is no direct relationship between Battery capacity and BMS current, big capacity doesn`t mean a big battery, but rely on continue current, that is to say if your engine is powerful, your should choose high current of BMS, it is not relied on batterycapacity.

3.Whether my BMS damaged?

If you want to judge if the BMS is damaged, please take the folowing steps, to test if each cell voltage is the same with
voltmeter? if the cell voltage difference is over 1.0V, the fault is displayed that it cannot run far, no power supply at the
start range, short charge time, all these issues are almost caused by battery cells, if BMS damaged is displyed as no charge, no discharge, no discharge while the battery has voltage.
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