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In the modern era, it’s known that batteries consist of various types of shapes that are specifically designed to fit the space and specifications of certain devices. One of the most widely recognized and commonly used battery types in everyday life is the cylindrical battery. However, even though this type of battery is commonly used, there are still many users who wonder; what is a cylindrical battery? Understanding what is a cylindrical battery is generally very important to know why this battery type is often the first choice in various applications.
In this article, we’ll thoroughly discuss what is a cylindrical battery, from the definition, structure and design, how it works, common types, characteristics, advantages and disadvantages, to common applications that use this battery type. With a good understanding of what is a cylindrical battery, we can find out why this battery design is still the standard of many battery industries over the years.
What is a Cylindrical Battery?
What is a cylindrical battery? Generally, cylindrical batteries are the most common type of battery used in the modern era and have a tube-like design. This battery type is specifically designed to provide a high level of battery energy density and also good mechanical stability. The tube design itself makes it easy for manufacturers to mass produce this battery type. Therefore, it’s no surprise that cylindrical batteries are the most common battery type and are often used in various types of electronic devices in the modern era.
Structure and Design of Cylindrical Battery
To understand more about what is a cylindrical battery, you also need to know how the structure and design of this battery is made. Generally, cylindrical batteries themselves are composed of several components called battery electrodes (anodes and cathodes), separators, and also electrolytes that help transfer ions during the battery charge and discharge process.
The various components that compose this battery will basically be rolled simultaneously in a cylindrical metal container. With this design, cylindrical batteries are able to provide good heat management and speed up the cooling process because they have a large surface. In addition, thanks to this design, cylindrical batteries are able to provide a much more reliable level of safety, as they can minimize dangerous risks such as explosions.
With a sturdy and stable structure, cylindrical batteries are often the first choice in various electronic devices and modern electric vehicles.
How Cylindrical Batteries Work?
When exploring the understanding of what is a cylindrical battery, the discussion of how this battery works cannot be missed. It’s because, for a further understanding of this battery type, we need to understand how this battery is able to produce and store energy properly. Technically, it’s known that cylindrical batteries work based on electrochemical principles, by converting chemical energy in the battery into electrical energy through a chemical reaction that occurs between the anode and cathode which is assisted by battery electrolyte.
For the rechargeable cylindrical battery type itself, the way this battery works will be divided into two stages, namely charge and discharge. The following is a more in-depth discussion of how rechargeable cylindrical batteries work.
- Discharge: When the battery is in use or supplying battery current, ions will move from the anode to the cathode through the electrolyte. Then, electrons will flow through the external circuit, so that the device can turn on and be used optimally.
- Charging: During the recharging process, the battery will be connected to a tool that can deliver electric current from an external source. This external electric current will force ions that were previously moving out to reverse direction into the battery and re-stored in the anode component. This makes the power that was previously used for the device’s needs, will be stored back in the battery cell.
Common Types of Cylindrical Battery
Generally, cylindrical batteries consist of several types that have quite different sizes, capacities, and characteristics from one another, so that the type selection can be adjusted to match your device needs. Understanding the differences in each cylindrical battery type can also help you understand more about what is a cylindrical battery. Therefore, the following are common types of cylindrical batteries that are widespread in the market.
18650 Battery
The most popular type used in various modern electronic devices. This cylindrical battery is called 18650 because this battery has a diameter dimension of 18mm and also 65mm long. The technology usually used to compile this battery type itself is a high-capacity lithium-ion of around 2,000-3,500 mAh, so this battery is often used for high-power applications.
21700 Battery
Similar to the 18650 battery, this battery is named 21700 because it has a diameter dimension of 21 mm with a length of 70 mm. Due to its larger size compared to the 18650 battery, this battery type is known to be able to hold much more energy. This battery capacity is known to reach 4,000-5,000 mAh, and is known to have much better thermal efficiency.
14500 Battery
The design and size of these batteries are generally similar to conventional AA batteries, but have a battery voltage much higher, which is around 3.7V. Due to its small size, this battery type is more suitable for small electronic devices such as flashlights, remote controls, or even digital cameras.
26650 Battery
This battery is designed to provide stable power to devices with high power consumption for a long time. It’s because, with its large size and design, this battery is able to provide much more energy to the connected device.
10440 Battery
This battery type has a very small size like a AAA battery. Because of its relatively small size, this battery is usually used in mini electronic devices or portable medical devices. However, although known to have a small capacity, the battery efficiency level is quite high for low-power device needs.
Characteristics of Cylindrical Battery
Understanding the characteristics possessed by cylindrical batteries can help us understand deeper about what is a cylindrical battery. It’s because, a battery certainly has its own characteristics that make it different from most other battery types. By recognizing these unique characteristics, you can know exactly why this battery type is considered the top choice in various industrial sectors. Therefore, here are some characteristics of cylindrical batteries.
Strong and Stable Mechanical Design
The tubular design of this battery is able to provide very high structural strength. Thus, cylindrical batteries have much better physical durability and even make the battery performance stable when the temperature changes. Additionally, the metal structure that coats these batteries is able to provide protection to the internal components from impact or damage.
Good Heat Management Capabilities
Cylindrical batteries are known to dissipate the heat generated by the battery more efficiently. This is due to the large surface design, making the heat distribution path to spread out, so that the battery can avoid the risk of overheating during charging or intensive use.
High Capacity and Energy Density
This battery type is known to have a good ratio of capacity to size, especially the lithium-ion type. Therefore, this can make the battery capable of storing more energy in a smaller size, making it very suitable for portable electronic devices.
Safety and Internal Protection
Generally, cylindrical batteries are equipped with various reliable protection systems, ranging from pressure vents, battery circuit breakers (CID), to safety valves. These features can prevent from battery leaking or even exploding when subjected to overheating or heavy pressure.
Ease of Grouping in Modular Systems
Commonly uniform cylindrical shapes are able to make the battery pack assembly using this battery type much easier even in large quantities. This allows manufacturers to easily assemble large battery packs for electric vehicles (EVs) and various energy storage systems (ESS).
Advantages and Disadvantages of Cylindrical Battery
Understanding the various advantages and disadvantages of cylindrical batteries can help you fully understand what is a cylindrical battery. By understanding the advantages and disadvantages of cylindrical batteries, we can more objectively assess why this battery type is still popular in the modern era, even though there are other alternatives. Therefore, the following is a discussion of the advantages and disadvantages of cylindrical batteries.
The Advantages of Cylindrical Battery
- Has a sturdy design, so it can withstand shocks, pressure, and also extreme weather changes better.
- Has excellent heat management, where this battery will dissipate all the heat in the battery through pressure vents. Also, the wide cylindrical surface can help keep the battery temperature stable.
- Easy to mass produce because it has a standard size, so it can be controlled consistently.
- Most cylindrical batteries have been integrated with reliable safety features that can prevent various dangerous risks.
- With an internal structure in the form of a jelly roll, it allows ion flow to run more stably and makes energy distribution much more equitable.
The Disadvantages of Cylindrical Battery
- Has a lower energy density level compared to other models, such as pouch cell, because the space inside the cylindrical shape is not fully efficient.
- Although it’s easy to combine, the cylindrical shape can lead to empty space when arranged in large battery pack, which can reduce space efficiency.
- Cylindrical batteries are known to have a higher battery weight compared to other battery types that have thin casings.
- For large battery systems, cylindrical batteries require sophisticated battery management systems to maintain balance between cells.
Applications of Cylindrical Batteries in Modern Devices
Because of the various reliability that has been mentioned earlier, cylindrical batteries are often the first choice in various modern electronic devices, ranging from laptops, digital cameras, to power tools. With its heat-resistant cylindrical structure, this battery is able to provide high reliability over a long period of time without experiencing a significant performance decline.
Apart from various portable electronic devices, cylindrical batteries play a major role in the electric vehicle industry and also energy storage. It’s known that many electric vehicle manufacturers use cylindrical cells as a constituent of their battery packs because of their thermal stability and stable current consistency.
Conclusion
Based on the discussion above, it can be concluded that understanding what is a cylindrical battery means that we’re getting to know one of the most reliable and efficient types of energy storage technology. With its tube-like design, this battery type is known to offer a variety of balanced reliability, ranging from durability, safety, to high performance. So, it’s no surprise that cylindrical batteries are still the top choice in various applications, ranging from small to large systems.
As a global lithium battery factory and solution provider, TYCORUN delivers high-quality cylindrical batteries with international safety standards and cutting-edge technology. Therefore, if you want to ensure that your device continues to perform optimally for a long time, TYCORUN’s battery products are the right choice. To understand more about our various battery products, from cells, packs, to specific applications, you can contact us here!
Frequently asked questions
Generally, cylindrical batteries are mostly rechargeable, especially those that use lithium-ion technology. Rechargeable cylindrical batteries can last through hundreds of charging cycles before experiencing a capacity drop.
Cylindrical batteries can basically last for approximately 2 to 5 years or through 500 to 1,000 cycles, depending on the chemistry, also how it's used and maintained.
To ensure they stay in good condition for a long time, ensure to store the batteries in a cool, dry place, and also avoid direct exposure to extreme temperatures. Also, ensure that you store the battery when its capacity is at the interval of 40% to 60% to maintain its capacity.
Who We Are
With over 17 years of experience, TYCORUN is a leading lithium battery supplier committed to driving innovation and development of battery technology. Our diverse product range includes two/three/four-wheeled power batteries, energy storage systems, one stop battery swap systems, inverters, and electric motorcycles. These high-quality solutions are trusted in Europe, the Middle East, and Africa.
We provide customized battery services, from cells to complete systems, and holds certifications like ISO9001, CE, TUV, and UL. TYCORUN has developed solid-state batteries for better performance and uses advanced BMS algorithms for safety and longer life.
TYCORUN’s global reach is strengthened through our strategic partnership with Ganfeng, a top-five Chinese battery manufacturer. This collaboration offers us professional technology and production support. We fully manage Ganfeng’s overseas battery business and have collaborated to mass sell swappable, power, and energy storage batteries to Thailand, Dubai, Egypt, South Africa, Saudi Arabia, etc.
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