This series adapts special technics and materials, which has a excellent charge and discharge performance in the low-temperature environment, and keep with over 50% discharge efficiency at -40℃, Widely used in solar lights, anti-cold devices, military facilities, aircraft in cold areas, and so on.
Battery design requirements:
Batteries: 18650 using our specially developed low temperature batteries, batteries Specifications: ICR18650 2.2Ah 3.6V.
Protection board (PCM): Protection moderators chips and all electronic devices are set using industrial products, temperature: -65 ° C to 150 ° C, protection chip in -60 ° C following work. Batteries internal use premium waterproof material potting, to prevent the battery at low temperatures and then to other high temperature resulting from the work area inside the battery resurgence, causing a short circuit inside the battery and damage the battery, water level reached IP7 level, the battery can be long soak in the 5-10 m deep water can be used normally.
Circuit design requirements:
1, overcharge protection voltage: 4.35 ± 0.025V
2, overcharge recovery voltage: 4.15 ± 0.050V
3, over-discharge protection voltage: 2.40 ± 0.08V
4, over-discharge recovery voltage: 3.00 ± 0.10V
5, the combination of battery overcurrent protection value (10ms): 6 ~ 12A
6, cycle life: 400 times
Jenny