The capacity of the battery is usually related to the following factors. :

① The structure and number of plates. When other conditions are the same, the capacity of the battery depends on the area of the plate and the porosity of the active substance, so the plate is usually made very thin. The plate thickness of the lead battery is 1.45-3.0mm,

② Discharge condition. When the discharge degree of the battery is large, the cross-sectional area of the plate pore decreases due to the large amount of lead sulfate precipitation, and it is difficult for sulfuric acid to penetrate into the plate from the surface. Therefore, when the discharge current increases, the sulfuric acid in the pores of the permeating plate is not enough to compensate for the amount of sulfuric acid consumed per unit time, resulting in a rapid decline in the voltage of the battery, and can not continue to discharge. Therefore, the discharge current increases, and the battery capacity decreases.

③ Electrolyte temperature. When the temperature is reduced, it is difficult for the electrolyte to penetrate into the plate due to the increasing viscosity surface, and when the temperature is reduced, the electrolyte resistance will increase and the voltage will be reduced, so the capacity of the battery will be reduced.

④ Electrolyte density. Increasing the density of the electrolyte can improve the electromotive force of the battery and the permeability of the electrolyte to the active substance in the plate, and reduce the resistance of the electrolyte, and increase the capacity of the turtle storage tank. However, if the electrolyte density continues to increase, its viscosity will increase, so when the electrolyte density exceeds a certain value, the electrolyte penetration speed will decrease, and the internal resistance will increase, the plate vulcanization will increase, and the battery capacity will decrease. Therefore, only when the electrolyte density is in a better state, the battery can obtain a larger capacity.

If the battery voltage is 12v, the storage capacity is 2.2AH, 7AH, 14AH, 17AH, 24AH, 32AH, 45AH, 60AH, 80AH, 105AH, 120AH, 160AH, and 198AH.

The device that converts chemical energy into electrical energy is called a chemical battery, which is generally referred to as a battery. After discharge, the internal active substances can be regenerated by charging – the electrical energy is stored as chemical energy; Chemical energy is converted into electrical energy again when it is needed to discharge. This type of battery is called a StorageBattery, also known as a secondary battery.

The so-called battery is a kind of electrical chemical equipment that stores chemical energy and releases electrical energy when necessary.

The five main parameters of the battery are: the capacity of the battery, the nominal voltage, the internal resistance, the discharge termination voltage and the charge termination voltage. The capacity of the battery is usually expressed in Ah(ampere-hours), and 1Ah is the current that can be used in 1A

Lower the power for one hour. The number of active substances in the cell battery determines the amount of charge contained in the cell battery, and the content of active substances is determined by the material and volume used in the battery, so the battery volume is usually higher

Large, the higher the capacity. One parameter related to battery capacity is the charging current of the battery. The common charging rate of the battery is C, and C is the rated capacity of the battery. For example, with 2A current

To charge the 1Ah battery, the charging rate is 2C; Similarly, using 2A current to charge a 500mAh battery, the charging rate is 4C.

When the battery just leaves the factory, the potential difference between the positive and negative poles is called the nominal voltage of the battery. The nominal voltage is determined by the electrode potential of the plate material and the concentration of the internal electrolyte. When the ambient temperature, use time and work

When the state changes, the output voltage of the cell battery changes slightly, in addition, the output voltage of the battery has a certain relationship with the remaining power of the battery. The nominal voltage of the cell nickel-cadmium battery is about 1.3V(but generally recognized

Is 1.25V), the nominal voltage of the unit nickel-metal hydride battery is 1.25V.

The internal resistance of the battery is determined by the resistance of the plate and the impedance of the ion current. In the charging and discharging process, the resistance of the plate is constant, but the impedance of the ion current will change with the change of the electrolyte concentration and the increase or decrease of charged ions.

When the battery is fully charged, the active substance on the plate has reached saturation, and then continue to charge, the voltage of the battery will not rise, and the voltage at this time is called the charging termination voltage. Nickel-cadmium battery charging termination

The voltage is 1.75~1.8V, and the charging termination voltage of the nickel-metal hydride battery is 1.5V. [Table 1-1 Discharge termination voltages of nickel-cadmium batteries at different discharge rates

Discharge termination voltage refers to the lower voltage allowed when the battery is discharged. If the battery continues to discharge after the voltage is lower than the discharge termination voltage, the voltage at both ends of the battery will drop rapidly, forming a deep discharge, so that,

The products formed on the plate are not easy to recover during normal charging, thus affecting the life of the battery. The discharge termination voltage is related to the discharge rate. The relationship between the discharge termination voltage and discharge rate of nickel-cadmium batteries is as follows

As listed in Table 1-1, the discharge termination voltage of nickel-metal hydride batteries is generally specified as 1V.

Battery parameters mainly include:

1, the capacity of the battery: expressed by Ah(ampere-hour), 1Ah is the current that can be in 1A, usually the larger the battery volume

Large, the higher the capacity.

2, nominal voltage: when the battery just leaves the factory, the potential difference between the positive and negative poles is called the nominal voltage of the battery. The nominal voltage is determined by the electrode potential of the plate material and the concentration of the internal electrolyte. When the ambient temperature, use time and working state change, the output voltage of the cell battery changes slightly, in addition, the output voltage of the battery has a certain relationship with the remaining power of the battery.

3, internal resistance: the internal resistance of the battery is determined by the resistance of the plate and the impedance of the ion current. In the charging and discharging process, the resistance of the plate is constant, but the impedance of the ion current will change with the change of the electrolyte concentration and the increase or decrease of charged ions.

4, charging termination voltage: when the battery is fully charged, the active substance on the plate has reached saturation state, and then continue to charge, the voltage of the battery will not rise, and the voltage at this time is called the charging termination voltage.

5, discharge termination voltage: discharge termination voltage refers to the lower voltage allowed when the battery is discharged. If the battery continues to discharge after the voltage is lower than the discharge termination voltage, the voltage at both ends of the battery will drop rapidly, forming a deep discharge, so that the product formed on the plate is not easy to recover during normal charging, thus affecting the life of the battery; The discharge termination voltage is related to the discharge rate.