A storage battery is a battery unit consisting of a positive electrode, a negative electrode and an electrolyte. A storage battery usually consists of a plurality of such battery cells connected in series. The voltage of each battery cell depends on its chemical reaction and internal structure. Generally speaking, the cell voltage of ordinary alkaline batteries or carbon-zinc batteries is about 1.5 volts.
This is because in this type of battery, zinc is the negative electrode, zinc hydroxide is the electrolyte and manganese dioxide is the positive electrode. Due to the chemical reaction and the different nature of battery structure, in other types of batteries, such as lithium battery, nickel-metal hydride battery or lead-acid battery, the voltage of battery cells may be different. But generally speaking, the voltage of a battery can be between 1.2 and 3.7 volts.
The voltage of a battery is usually 1.5 volts, which is determined by the chemical reaction of alkaline battery or carbon-zinc battery and the potential difference generated by the battery structure. This voltage output meets the needs of many portable devices in our daily life and becomes one of the most common battery voltages.
Types and applications of storage batteries
Battery is a kind of equipment that converts chemical energy into electrical energy in chemical reaction and releases it when necessary. They are widely used in our daily life, supplying power for various portable devices, storing electric energy and standby power. Among all kinds of batteries, we are most familiar with alkaline batteries or carbon-zinc batteries. They are usually used in electronic devices, remote controllers, flashlights and other low-power devices. These batteries are composed of a plurality of battery cells connected in series, and the voltage of each battery cell is generally 1.5 volts.
There are also some high-capacity batteries, such as lithium batteries, nickel-hydrogen batteries and lead-acid batteries. Lithium batteries are widely used in mobile phones, notebook computers and electric vehicles because of their high energy density and long life. Nickel-metal hydride batteries are usually used in equipment with high demand for electric energy, such as unmanned aerial vehicles, power tools, medical equipment and so on. Lead-acid batteries are mainly used in automobile starting, UPS standby power supply system and solar energy storage system. The development of battery technology makes it widely used in the field of renewable energy.