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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.
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Talking about electric cars and 18500 battery: Is fast charging harmful? Is it possible to replace the battery?
As a product of the emerging era, new energy vehicles are relatively unfamiliar to most consumers. Even though more and more people are ready to pay for new energy vehicles, they may not really understand them. For example: Does fast charging damage the battery? Are there charging stations on the highway? Can new energy vehicle 18500 battery be recycled? If you want to know the answer, keep reading!
As a product of the emerging era, new energy vehicles are relatively unfamiliar to most consumers. Even though more and more people are ready to pay for new energy vehicles, they may not really understand them. For example: Does fast charging damage the battery? Are there charging stations on the highway? Can new energy vehicle 18500 battery be recycled? If you want to know the answer, keep reading!
What damage does fast charging do to the battery?
Everyone has heard that electric vehicles have two differences: fast charging and slow charging. We all also know that fast charging is much faster than slow charging, but what is the essential difference between them?
The concept of fast charging and slow charging: Fast charging and slow charging are relative concepts. Generally, fast charging is high-power DC charging, which can fully charge 80% of the battery capacity in half an hour. Slow charging refers to AC charging, and the charging process takes 6-8 hours.
The voltage of fast charging DC charging is generally greater than the battery voltage. For example, the battery voltage of BYD Qin is 400V DC, so the DC charging voltage should be above 500V. The power of Qin is 13KWH, so its charging current should be 32.5A, that is, the power of fast charging is P =UI=500V*32.5A=16.25KW.
Slow charging is plugged into the 220V AC socket at home for charging. Since the battery cannot accept AC charging, slow charging converts 220V AC into DC and then boosts it to the battery charging voltage such as 500V DC. Then use this 500V DC charges the battery.
From this it can be concluded that the maximum charging power of slow charging is about P=UI=220V*10A=2.2KW. It can be seen that the power of fast charging 16.25KW is much greater than that of slow charging 2.2KW, so we can find that fast charging is much faster than slow charging.
Advantages and disadvantages of slow charging: small current, long charging time, low charger and installation costs; it can make full use of low power periods for charging, reducing charging costs; it can deeply charge the battery, improve battery charging and discharging efficiency, and extend battery life.
Household slow charging AC: Since the average household 220V AC socket is 10A and 16A, for the sake of safety, the charging current of slow charging is generally less than 10A, calculated according to the 10A standard.
Advantages and disadvantages of fast charging: The battery pack can be quickly recharged in a short period of time, and the charging speed is fast; the installation requirements and costs of charging equipment are high, the current and voltage are high, and the impact on the battery is greater in a short period of time, and long-term fast charging affects the battery life.
Hazards of fast charging: Fast charging of lithium 18500 battery is at the expense of the cycle life of the battery, because the battery is a device that generates electrical energy through electrochemical reactions. Charging is a reverse chemical reaction, and fast charging will input energy into the battery in an instant. High current and frequent use of fast charging mode will reduce the battery's recovery ability and reduce the number of battery charge and discharge cycles.
Simply put, fast charging requires very high quality of the battery, and the reaction conditions of the battery under high current are too harsh and violent, far away from the equilibrium state, which will cause a great loss in the life of the battery and the safety factor will be significantly reduced. Therefore, Do as little as possible when not necessary. Slow charging can avoid these problems very well.
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