The internal resistance of the battery refers to the resistance of the current flowing through the inside of the battery. The internal resistance of the lead-acid battery is small, and a special instrument can be used to measure the relatively accurate results. Generally, the battery internal resistance refers to the internal resistance of the charge state, that is, the internal resistance of the battery is charged. It corresponds to the discharge state internal resistance and is not stable.The larger the internal resistance of the battery, the more energy consumed by the battery itself, the lower the efficiency of its use. The battery is very hot, and the temperature of the battery has risen sharply, and the impact on the battery and the charger is large. As the number of battery usage increases, due to the consumption of the electrolyte and the decrease in chemical activity in the battery, the internal resistance of the battery has different degrees, and the battery, the worse battery, the faster the battery increases.
The internal impedance of the battery increases due to the increase in the amount of discharge, especially when the discharge is terminated, mainly because the discharge is carried out causes the electrode plate to produce poor conductive sulfate and the specific gravity of the electrolyte, so it will be charged immediately after discharge. If it is continuously discharged, then the leads of sulfate form a stable white crystal (ie, the vulcanization phenomenon), even if charging, the active material of the plate can also be restored, thereby reducing the battery life of the battery. The decline in temperature will result in deterioration of electrolyte fluidity, polar contraction, slow chemical change, and increase in battery internal resistance. Starting from 30 ¡ã C, if the temperature drops 1 ¡ã C, the capacity will drop by 1%, and its internal resistance also increases. Therefore, in the cold area, the temperature has dropped to 60% when the temperature is below -20 ¡ã C, and the internal resistance is increased, and it is often inadequate in the battery. Excessive discharge is prone to excessive discharge in severely cold, and excessive charging is often present in temperate regions. Therefore, the battery must be used according to the local climatic conditions, and the law is grasped in the actual situation.
The charging of the battery must select the appropriate method according to different situations and use the charging equipment to increase the capacity of the battery and extend the service life of the battery. The internal resistance of the lead-acid battery is smaller than the nickel-hydrogen storage battery and the lithium ion battery, that is, the product capacity of the lead-acid battery is lowered by 2/3, which can provide a large current, and the power supply voltage is substantially stable and the fluctuation is small. The nickel-hydrogen battery and lithium ion battery are different. Taking a 36V / 9AH lithium-ion battery as an example, when the capacity drops to the original 1/3, the current is output to 12A, the voltage will have a fluctuation of 4 to 5V, that is, the current output is 31V, and the no current is output. 35V. In this way in electric bicycle applications, there is no time to run when riding, and sometimes there is output when there is outp Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
