Do lithium battery electric vehicles need to be charged every day?

CautiousSlug
3 min readNov 16, 2023

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lithium battery
lithium battery

Lithium batteries do not need to be charged every day, but no matter how much power is used, timely replenishment is good for the battery. Electric vehicles are a common means of transportation with a relatively simple structure. The main components of electric vehicles include the frame, motor, battery and controller.

The controller is used to control the entire vehicle circuit. Without a controller, an electric vehicle cannot drive properly.

The controller is usually fixed under the rear seat.

The electric motor is the part of the electric vehicle used to provide power, and the electric motor can drive the electric vehicle forward.

The battery is the part of an electric vehicle that stores electrical energy. Batteries power all the electronic devices in an electric vehicle.

Without batteries, electric vehicles cannot run properly.

The battery is a wearing part and needs to be replaced regularly. As the number of charges and discharges increases, the performance of the battery will also decrease.

During the charging and discharging process, ions in the battery will move in the electrolyte, and some ions will react chemically with the electrolyte when moving in the electrolyte.

As the number of charges and discharges increases, the number of ions in the battery will continue to decrease, so the performance of the battery will continue to decline.

If you can maintain correct driving habits, you can effectively extend the service life of the battery.

Be sure to use a suitable charger when charging and do not use a fast charging system as this will damage the battery.

What is the discharge principle of lithium batteries?
When a lithium battery is discharged, the lithium atoms on the negative electrode will decompose into electrons and lithium ions. The electrons reach the positive electrode through the external circuit, and the lithium ions reach the positive electrode through the separator.

Lithium is a very active metal and cannot be retained in the negative electrode. If it is not retained, it will decompose into lithium ions and electrons.

Lithium battery is a rechargeable battery.

In fact, the charging and discharging principle of lithium batteries is very simple. Lithium ions move in different directions during charging and discharging.

The structure of lithium battery is also very simple. This battery consists of a positive electrode, a negative electrode, a separator and an electrolyte.

The separator of a lithium battery allows lithium ions to pass through, but not electrons.

When charging, the lithium atoms on the anode are decomposed into electrons and lithium ions under the action of an external power supply.

In this way, lithium ions will move to the negative electrode through the separator, and electrons will move to the negative electrode through the external circuit.

Lithium ions arriving at the negative electrode form lithium atoms when they encounter electrons.

The negative electrode of lithium batteries is usually made of graphite because graphite has a multi-layer structure that can accommodate lithium atoms.

There are many types of lithium battery positive electrodes, the most common ones are ternary lithium batteries and lithium iron phosphate batteries.

Lithium batteries commonly used in pure electric vehicles include lithium iron phosphate batteries and ternary lithium batteries.

Lithium batteries are widely used in mobile phones, tablets, laptops, etc.

Related recommendations:Why do more and more people choose to use lithium batteries?

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CautiousSlug

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