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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 .
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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:2024-09-13 Hits: Popular:AG11 battery
Introduction to technical indicators of 21700 battery protection board
Technical indicators of lithium-ion battery protection board
1. Voltage protection capability
Overcharge protection: The lithium-ion battery protection board must have the ability to prevent the battery cell voltage from exceeding the preset value Over-discharge protection: The protection board must have the ability to prevent the battery cell voltage from being lower than the preset value
2. Current capability
As a safety protection device for lithium batteries, the protection board must be able to work reliably within the normal working current range of the equipment, and must be able to act quickly when the battery is accidentally short-circuited or overcurrent occurs, so that the battery cell is protected.
3. On-resistance
Due to the high operating frequency of communication equipment, data transmission requires a low bit error rate, and the rising and falling edges of its pulse train are steep, so the current output capacity and voltage stability of the battery are required to be high. Therefore, the MOS tube switch of the protection board should have a small resistance when it is turned on. The single-cell protection board is usually <70m. If it is too large, it will cause the communication equipment to work abnormally, such as the mobile phone suddenly disconnecting during a call, the phone cannot be connected, and noise.
4. Self-consumption current
Meaning: The working voltage of the IC is 3.6V. Under no-load conditions, the working current flowing through the protection IC is generally very small. The self-consumption current of the protection board directly affects the standby time of the lithium-ion battery. It is usually stipulated that the self-consumption current of the protection board is less than 10 microamperes.
5. Mechanical properties, temperature adaptability, and anti-static ability
The lithium-ion battery protection board must be able to pass the vibration and impact tests specified by the national standard; the protection board can work safely at -40 to 85 degrees and can withstand a non-contact ESD static test of ±15KV.
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