Battery voltage represents the potential difference between the positive and negative terminals of a battery. Voltage in an electric circuit is the cause of the flow of electrons in the circuit, and where there is current, there must be voltage.
Only the existence of current in the circuit can power the devices connected to the circuit, voltage is the key to the existence of current in the circuit, voltage is the driving force for the movement of electrons, he pushes the electrons from the positive pole to the negative pole to form a closed-loop current.
No, the voltage describes the potential difference between the two points, not to describe the strength of the current, leading to high danger is the current strength, high voltage does not mean high danger, compared to high current is really high danger, most of the batteries in order to meet the needs of the use of the design of some of the high voltage, the specific strength of the current depends on what you use in the circuit.
In the use of batteries in the battery over-discharge will cause irreparable damage to the battery, for different batteries there is a cut-off voltage, the battery voltage in the battery discharge is not always the same, when the battery voltage is released to the cut-off voltage will cause permanent damage to the life of the battery to try to avoid using less than the cut-off voltage.
(1) alkaline batteries, alkaline batteries are often used in life, is a cylindrical battery such as AA, AAA, alkaline batteries as a disposable battery storage time is long, the battery stabilized voltage is lower for 1.5V
(2) lithium batteries, lithium batteries are commonly used in electronic equipment according to the use of different ways of different voltages, often for about 3.7
(3) lead-acid batteries, these batteries are commonly used in a variety of engines, in order to achieve the motor starting voltage is higher for 12V
Battery damage is divided into their own scrap and reach cycle life, we can determine whether the battery cycle life according to the voltage, for example, a voltage of 9 volts of lithium batteries in normal use of the battery in the battery consumption to the voltage can not support the use of the battery on behalf of the battery runs out of power when the battery has to ensure that the fully charged can no longer support the operation of the battery then the battery has reached the cycle life, on behalf of the damage.
Direct use of batteries to generate power is an electric car, for electric cars battery is a power source, then the battery voltage is used to determine the speed of the electric car, in controlling the speed of the electric car in fact, you are in the voltage through the circuit to meet the requirements, which explains the correctness of the voltage is the power!
(1) charging, each battery has a fixed voltage, if the charging voltage is lower than the battery voltage will not be able to fill the battery, if the difference is too much there may be a phenomenon of reverse charging.
(2) to prevent overcharging, battery charging overcharging will lead to excess power in the battery to become heat, serious cases will lead to explosion of the bulge, the use of adapted power supply for battery charging, when the battery voltage reaches the full requirements will not be able to continue to the battery charging to ensure that the battery’s service life.
The battery voltage has an important position in the battery, by understanding the battery voltage can be used in the battery to increase the use of battery safety.
