1. Battery charging
With the external DC power supply, the process of inputting the battery into the battery to force an internal electrochemical reaction is called charging the battery.
2. Battery discharge
The process of electrochemical reaction inside the battery to generate electrical energy and output electrical energy to the external circuit is called discharging the battery.
3. Active substances
It refers to a substance that adds an electrode reaction during the process of converting chemical energy into electrical energy in a battery.
4. Why does the battery need an external power supply when it is discharged and an external power supply when the battery is charged?
The electrochemical reaction when the battery is discharged is a spontaneous process. The battery is powered by the circuit itself, and the battery is equivalent to the electrolytic cell. The chemical reaction in the electrolytic cell is not spontaneous. The process is carried out, so the chemical reaction is forced in the opposite direction by means of an external power source.
5。 Battery electromotive force
The difference between the positive electrode balance electrode potential of the battery and the negative balance electrode potential is called the battery electromotive force, which is also called the theoretical voltage.
6. Open circuit voltage
When the battery is open, the potential difference between the positive and negative electrodes is called the open circuit voltage, and the open circuit voltage is numerically equal to the difference between the positive and negative stable electrode potentials, which is a measured value。
7. Nominal voltage
It is generally referred to as the voltage value that a battery can operate under standard conditions.
8. Discharge voltage
When the battery is discharged, the potential difference between the positive and negative electrodes is called the discharge voltage, which is also called the working voltage or the load voltage or the terminal voltage。
9. Charge termination voltage
The highest voltage allowed for battery charging is called the charge termination voltage。
10. Discharge termination voltage
When the battery is discharged, the lowest operating voltage at which the voltage drops to no longer continue to discharge is called the discharge termination voltage。