12.8V20Ah integrated solar street light 26650 LiFePO4 battery pack

12.8V20Ah integrated solar street light 26650 LiFePO4 battery pack

Nominal Voltage: 12.8V

Nominal Capacity: 20Ah

Over-charge cut-off voltage: 14.4V

Over-discharge cut-off voltage: 8V

Standard charge current: 0.2C

Maximum charge current: 0.5C

Standard discharge current: 0.2C

Maximum discharge current: 1C

Cycle life: ≥ 1000 times

Charge temperature: 0~45℃

Discharge temperature: 0~45℃

Storage temperature: -20~60℃

Battery temperature protection: 70℃ ± 5℃

Resistance: ≤ 1000mΩ

Dimension: 290*155*75mm

Weight: around 2kgs

Design scheme for solar street light battery pack：

1) protection circuit board (PCM): Mainly design against protection circuit board for rechargeable high capacity battery pack. Because of the chemical characteristics of lithium battery, in order to avoid burning, explosion etc. dangerous situation, must provide over charge, over discharge, short circuit, over current & over heat etc. protection function.

2) protection IC (Protection IC): Main protection function chip in design scheme, carry on-line constantly monitor on over charge, over discharge, over current, short circuit etc. function of battery cell. Ensure batter cell work within the scope of safety, stability, high efficiency.

3) over current protection chip (PTC): Mainly design against secondary protection function. PTC can recover thermal fuse with dual function: over current protection & auto recovery. PTC inside battery cell can prevent the cell occurs high temperature discharge and un-safe large current.

4) MOSFET chip：MOSFET chip, on on-off action in protection circuit

5) Packing of battery pack: plastic film shrink + PVC + ABS waterproof case

Application: solar street light, solar home system, solar energy storage, medical equipment, communication station, home energy storage, mini electric vehicle, electric bicycle, electric skateboard, electric wheelchair, electric motorcycle, LED, wireless surveillance device, portable home appliance etc.