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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2023-09-21 Hits: Popular:AG11 battery
When the battery pack is discharged, the external load is connected to the positive and negative poles BAT+and BAT - at both ends of the battery pack. The discharge current flows through the negative pole BAT - of the battery pack, the charging control switch device, the discharge control switch device, the single lithium battery N~1 in the battery pack, and the positive pole BAT+of the battery pack. The current flow direction is shown in. The discharge undervoltage protection, overcurrent and short-circuit protection control signals of the single lithium battery protection chip in the control circuit of the system are isolated by optocouplers and output in series, providing gate voltage for the conduction of the discharge switch device in the main circuit; Once the battery pack encounters special situations such as undervoltage, overcurrent, and short circuit of a single lithium battery during the discharge process, the corresponding discharge protection control signal of the single lithium battery becomes low and cannot provide gate bias voltage to the discharge control switch device in the main circuit, causing it to turn off and the main circuit to disconnect, thus ending the discharge usage process.
Generally, lithium batteries use a constant current constant voltage (TAPER) charging control. When charged at constant voltage, the charging current decreases approximately exponentially. The switching devices of the charging and discharging main circuit in the system can be selected based on the maximum operating current and voltage required by the external circuit.
The single lithium battery protection chip of the control circuit can be selected based on the voltage level and protection delay time of the single lithium battery to be protected. The shunt discharge branch resistance can be achieved using power resistors or resistance networks. It is more reasonable to use a resistance network to achieve shunt discharge branch resistance here, which can effectively eliminate the influence of resistance deviation and also reduce thermal power consumption.
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