Bảng Mạch Bảo Vệ Pin Lithium 21s 72v 30a 40a

"Applicable battery: ternary battery nominal: 3.6V/3.7V, protection parameter: 2.8V-4.25V
Protection board specifications: 30A/40A
Motor power: within 1000W/within 1400W/within 180OW
Controller current limit: within 25A / within 35A / within 45A

Overcharge protection/overdischarge protection/overcurrent protection
Short circuit protection/balance protection/temperature control protection
Static protection / dust protection / moisture protection

Built-in temperature control and one more layer of protection
LED equalization lamp safety display, voltage at a glance when charging
TVS upgrade, reduce MOS tube breakdown, safety protection and absorption of high voltage

Discharge current: 30A/40A/50A
Discharge overcurrent protection value: 2-4 times of continuous current
Main circuit conduction internal resistance: 20 mΩ
Charging current [same port]: 20A/30A/40A
Charging voltage: ternary battery string number x4.2V

Overcharge protection:
Detection voltage: ternary 4.25±0.03V
Detection delay: 1000 ms
Release voltage: ternary 4.19 ± 0.05 V

Over discharge voltage protection:
Detection voltage: ternary 2.8 ± 0.1V
Detection delay: 1000 ms
Release voltage: three yuan 2.9 soil 0.1V

Balance voltage:
Detection voltage: ternary ≥ 4.18V
Release voltage: ternary <4.18V
Balance current: 20-30 mA

Over discharge current protection:
Detection delay: 100 ms
Release condition: disconnect load/charge activation
Temperature control protection:
Discharge over temperature protection: 75 ± 5℃
Release temperature: 53±14℃
Operating temperature:
Temperature range: -20℃/+80℃
Size: width 87x length 95x thickness 10mm

1. First connect the B- line to the battery negative terminal (the B- line needs to be welded with a short wire first), and then connect the flat cable (before connecting the flat cable, first unplug the flat cable from the board)
2. Start wiring from the BCO, connect the BCO to the total negative electrode of the battery (name this string ①), the cable BC1 next to the BCO connects to the positive electrode of the number ① battery, and the third cable BC2 connects to the positive electrode of the battery number ②. The four cables BC3 are connected to the number ③ battery positive... and so on.
3. After connecting the cables, measure the voltage between each two adjacent cables from the header. The voltage of the polymer battery should be less than 4V, and the voltage of the iron-lithium battery should be less than 3.5V. Insert the cable after checking.
4. Connect the negative pole of the charger and the negative pole of the load to C-. B negative wires and C negative wires need to be welded with thick wires. The wiring method has nothing to do with the color, only the correct order is required.
5. Then measure whether the total battery voltage is equal to the output voltage of the protection board, and the protection board works normally if it is equal