What are the influencing factors of dry battery voltage capacity

1. The influence of the discharge rate on the battery capacity. The battery capacity decreases with the increase of the discharge rate, that is to say, the larger the discharge current, the smaller the calculated battery capacity. For example, a 10Ah battery can be discharged with a 5A discharge. Hour, that is, 5×2u003d10; then only 47.4 minutes of electricity can be discharged with 10A discharge, which is 0.79 hours. Its capacity is only 10×0.79u003d7.9 ampere hours. So regarding the discharge of a given battery at a different time rate, the There are different capacities. When we talk about capacity, we must understand the time rate or rate of discharge. Simply put, how much current is used to discharge. 2. The influence of temperature on battery capacity. Temperature has a great influence on the capacity of lead-acid batteries. Generally, as the temperature decreases, the capacity decreases. The relationship between capacity and temperature is as follows: Ct1u003dCt2/1+k(t1-t2).t1t2 respectively Is the temperature of the electrolyte, k is the temperature coefficient of the capacity, Ct1 is the capacity (Ah) when the temperature is t1, and Ct2 is the capacity (Ah) when the temperature is t2. In the battery production standards, it is generally necessary to specify a temperature as the rated standard temperature. If it is stipulated that t1 is the actual temperature and t2 is the standard temperature, (generally 25 degrees Celsius) the negative plate is more sensitive to the influence of low temperature than the positive plate. When the temperature of the electrolyte decreases, the viscosity of the electrolyte increases, and the ions receive greater resistance. Diffusion ability decreases, and electrolyte resistance increases, which increases the resistance of electrochemical reaction, and part of lead sulfate cannot be converted normally. Charging acceptability decreases, resulting in a decrease in battery capacity. 3. The impact of termination voltage on battery capacity. When the battery is discharged to a certain voltage value, the voltage drops sharply. In fact, the energy obtained is very small. If the battery is discharged for a long time, the damage to the battery is considerable. So it must be at a certain voltage value. The voltage value terminates the discharge, and the cut-off discharge voltage is called the discharge termination voltage. Setting the discharge termination voltage is of great significance to prolong the service life of the battery. Generally, the discharge termination voltage of the electric motor battery that we repair is 1.75 volts per cell. In other words, a 12-volt battery has 6 cells, and its end-of-discharge voltage is 6×1.75u003d10.5 volts. Disclaimer: Some pictures and content of the articles published on this site are from the Internet, if there is any infringement, please contact to delete. Previous: Explanation of the correct use of lithium-ion batteries