Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
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:2024-03-04 Hits: Popular:AG11 battery
The impact of temperature on discharge performance is directly reflected in discharge capacity and discharge voltage. As the temperature decreases, the internal resistance of the battery increases, the electrochemical reaction rate slows down, the polarization internal resistance rapidly increases, the discharge capacity and discharge platform of the battery decrease, affecting the power and energy output of the battery.
Taking the discharge of an 80A · h nickel hydrogen battery as an example, the electric vehicle battery is fully charged at room temperature and discharged at 1C current at different temperatures. The relationship between capacity and temperature is shown in Figure 5-1. At a temperature of 20 ℃, the discharge capacity is relatively low. At 20 ℃, the discharge capacity is maximum, and as the temperature increases, the discharge capacity decreases. However, the discharge capacity at medium and high temperatures is significantly larger than that at low temperatures, indicating that the discharge performance at medium and high temperatures is stronger than that at low temperatures. This is because the high temperature is conducive to the diffusion of hydrogen atoms in the alloy, improving the dynamic performance of the alloy. At the same time, the conductivity of the electrolyte KOH increases with the increase of temperature. At high temperatures, the electrolyte has high conductivity, strong current migration ability, reduced migration resistance, and enhanced current charge discharge performance.
The influence of temperature on overpotential is more significant. The higher the temperature, the smaller the overpotential, and the easier the electrode reaction is. This is because the overpotential of electrode discharge reaction is determined by two factors: ① the charge transfer resistance on the contact surface between the alloy and the electrolyte; ② The diffusion resistance of hydrogen atoms from the alloy body to the surface. The increase in temperature accelerates the diffusion and charge transfer of hydrogen atoms, promotes electrode reactions, reduces reaction overpotential, and thus increases the discharge capacity of the battery. Similarly, under high temperature conditions, the discharge power capacity of the battery will also increase. At low temperatures (-20 ℃), the discharge performance of batteries is inferior to that at room temperature, mainly due to the excessive stability of metal hydrides at low temperatures and increased electrochemical reaction impedance. At the same time, under low temperature conditions, the Ohmic internal resistance of the battery also increases, affecting the output of the battery's discharge power.
For lithium-ion batteries, the discharge capacity drops sharply under the same low temperature conditions, but at high temperatures, the discharge capacity is not lower than at room temperature, and sometimes slightly higher than at room temperature. This is mainly due to the accelerated migration rate of lithium ions at high temperatures. Unlike nickel electrodes and hydrogen storage electrodes, lithium electrodes do not decompose or form hydrogen gas at high temperatures, causing a decrease in capacity. When the battery module is discharged at low temperature, as the discharge proceeds, heat is generated due to resistance and other reasons, causing the battery temperature to rise, resulting in an increase in voltage
Read recommendations:
What shells are generally used in lithium batteries.home solar energy storage lithium battery Factor
Cathode Materials for Cylindrical Lithium - ion Batteries
Last article:18650 battery 3.7v 6000mah.Low temperature batteries: technology, application, and market
Next article:1.5v Carbon battery.What is the reason for the decrease in battery capacity
Popular recommendation
AAA Ni-MH battery Manufacturing
2023-03-22801620 battery sales
2023-03-2218650 lithium battery 3000mah
2023-03-223.20V lipo battery maker
2023-03-22AA NiMH battery maker
2023-03-22551235 180mAh 3.7V
2022-08-196F22
2022-07-04601248 300mAh 3.7V
2022-07-01LR20
2022-11-16Ni-MH AA1200mAh 1.2Va
2022-07-01Home energy storage battery GN-BOX2
2022-09-27Elastic sports armband
2022-09-22Lithium Battery LQ-1218
2022-08-1918650 2500mAh 3.7V
2022-08-19Rack-mounted energy storage battery GN-2560
2022-09-279V rechargeable battery
2023-06-2518650 battery 3.7v 3500mah
2023-06-25LR41 battery
2023-06-2518650 lithium battery 3000mah
2023-06-252200mah 18650 battery
2023-06-25Safety Issues of Lithium - Ion Batteries
2025-03-26902030 lipo battery.On the Self Protection Function of Lithium Batteries
2023-10-27902030 lipo battery.Lithium iron phosphate batteries have exploded, accelerating the "Renaissan
2023-10-19How does lithium polymer battery perform under extreme temperature conditions?
2024-09-10lithium 3400mah 3.7v 18650 battery.Precautions for lithium battery charging
2023-12-26Lithium power battery storage method.3.7V 18650 lifepo4 battery
2023-07-11Other models of lithium batteries.lithium ion battery cells 18650
2023-07-07What are the lithium battery industry chains?lithium battery for solar energy storage system price
2023-04-2218650 lithium battery blast cause.CR2320 battery
2023-06-07The correct method of charging ternary lithium battery
2022-11-22