Fibre-optic fusion splicing machine is mainly used in major operators, engineering companies, enterprises and institutions of optical cable line construction, line maintenance, emergency repair, production testing of fibre-optic devices and research and teaching in research institutes, the equipment is mainly by releasing an electric arc to melt both ends of the optical fiber, while using the principle of collimation gently advance to achieve the coupling of the optical fiber mode field.
For the convenience of construction, the market has developed handheld fibre optic fusion splicers, ribbon fibre fusion splicers specifically designed to splice ribbon fibres, and skin fusion splicers for splicing skin fibre cables and patch cords. The 18650 lithium battery pack has become the preferred backup power solution for such high-tech test equipment due to its unique advantages.
Fiber optic fusion machine battery backup needs 70 degrees of temperature automatic protection function. Equipment start instantaneous current requirements are large, peak current up to 15-20A, normal working current 2-3A, the battery continuous working time requirements are high, for this reason our company in the fiber optic fusion machine backup battery using imported batteries, the battery has a high energy ratio, light quality, small volume, high cycle life, high security, high voltage, good consistency and other advantages, lithium battery pack design output overcurrent protection value 25A The Li-ion battery pack is designed with an over-current protection value of 25A, a continuous operating current of 7A and a charge capacity of 6600mAh, which fully meets the power requirements of the instrument. Specific design requirements parameters are as follows.
1, Single overcharge protection voltage: 4.35±0.25V
2, Single overcharge recovery voltage: 4.15±0.50V
3, Single overdischarge protection voltage: 2.40±0.08V
4, Single overdischarge recovery voltage: 3.00±0.10V
5, The combination battery overcurrent protection value (10ms) : 20~30A
6, The combination battery overtemperature protection value (recoverable) : 70±5℃
7, The finished battery also has short circuit, reverse charge protection.
(1) Protection board (PCM) : it is mainly a protection line designed for rechargeable lithium battery pack. Due to the chemical characteristics of lithium battery itself, it is necessary to provide intelligent power calculation, overcharge, overdischarge, short circuit, overcurrent and other protection functions to avoid combustion, explosion and other dangers.
(2) Protection IC (Protection IC) : the design of the main Protection function chip, the cell overcharge, overrelease, overcurrent, short circuit and other functions of online monitoring, so that the cell in a safe, stable and efficient range of work.
(3) Temperature switch: mainly designed for temperature protection function. When the battery temperature reaches the range of 70±5 ° C due to other abnormal problems, the temperature switch is turned on for temperature protection
(4) 18650 Lithium ion Cell / 18650/2200mah /3.7V Li-ion Cell (SANYO)
(5) Field effect tube (MOSFET) : MOSFET tube plays a switching role in the protection circuit, always make the voltage at both ends of the load will not increase nor decrease, to ensure voltage stability.
(6) Battery package (housing)
Post time: Sep-20-2022