What is Cell balancing in a lithium-ion battery?

The term cell balancing is normally associated with lithium ion batteries in question. It is a procedure that lengthens the lifespan of each cell while enhancing the capacity of a battery pack which is made up of several cells that are often connected in series.

In this blog we are going to discuss the importance and types of cell balancing in a lithium-ion battery.

Importance of cell balancing:

Cell balancing ensures that all cells in a lithium-ion battery pack are charged and discharged equally in the lithium-ion battery. If some cells in the battery are in a state of more discharge than the others then it leads to a hampering of the performance, reduction of battery capacity and even safety concerns.

In lithium-ion batteries, there are multiple  cells that are connected in series to increase voltage. In the process of charging or discharging, some cells may become fully charged or discharged before others, leading to an imbalance in the state of charge (SOC) across the battery pack. Here is where cell balancing comes into the picture. The capacity or SOC levels of the individual cells in the battery pack vary and differ from each other.

Types of Cell balancing

1.Passive cell balancing:

In this method a balancing resistor is connected in parallel with each cell of the lithium ion battery pack. The balancing resistor begins to dissipate the extra energy as each cell’s voltage hits its maximum during charging state, allowing other cells to continue charging.

This method is a simple and cost-effective method, but it is not suitable for high-power applications due to excessive heat generation and reduction in the overall efficiency of the battery pack. Since 100% of the surplus energy from a higher energy cell is wasted as heat in this process, this approach is less advantageous to utilize during discharge due to the clear impact on battery life time.

2.Active cell balancing:

This method is more efficient as compared to the passive approach.

In this case, a dedicated electronic circuit monitors the SOC of each cell and actively transfers energy between cells to balance the SOC.

Here it shuttles the energy between the cells differing in SOC. Even though it is an effective method of cell balancing, there is a requirement of additional electronic components leading to increase in the complexity and cost of the BMS system of the battery.

Summary

Since battery cells are delicate and can be permanently damaged if they overcharged or over-discharged hence it is essential to perform cell balancing when grouping multiple battery cells together to power a device.. When cells with various SOCs are combined, their voltages may drop until the cell with the lowest energy storage reaches its discharge cut off voltage.

Cell balancing is an efficient process that ensures the safety and longevity of lithium-ion battery packs. This helps to prevent overcharging, over-discharging, and thermal runaway, which can cause battery failure and even fire.

Akira is a leading lithium-ion battery manufacturer in India offering durable lithium-ion batteries that run longer and deliver a high performance.

What Is An Ess Battery And How Does It Work? 

What Is An Ess Battery ?

An ESS (Energy Storage System) battery is a device that stores electrical energy for later use. It allows for efficient and effective management of energy from various sources, including renewable energy sources such as wind and solar power.

The basic components of an ESS battery include the battery cells, a battery management system (BMS), and an inverter. The battery cells are responsible for storing the electrical energy, while the BMS ensures the battery operates safely and efficiently. The inverter converts the DC (direct current) energy stored in the battery into AC (alternating current) energy, which can be used to power homes, businesses, and other electrical devices.

How does an ESS Battery work?

The way an ESS battery works is relatively simple. When excess energy is produced from renewable sources such as solar or wind, it is stored in the ESS battery for later use. This stored energy can be used during times when energy demand exceeds supply, such as during peak usage hours or during periods of low renewable energy production.

The battery management system is responsible for monitoring the battery’s performance and ensuring it is operating efficiently and safely. This system also controls the flow of energy between the battery and the inverter, as well as the charging and discharging of the battery.

When the stored energy is needed, the inverter converts the DC energy into AC energy, which can be used to power homes or businesses. This process is known as discharging. Conversely, when the battery needs to be recharged, the inverter converts the AC energy into DC energy, which can be stored in the battery cells. This process is known as charging.

Advantages of using an ESS Battery!

ESS batteries have several advantages over traditional energy storage methods. One of the main benefits is that they allow for efficient management of energy from renewable sources. They also help reduce the overall energy demand during peak usage hours, which can help reduce the strain on the electrical grid.

In addition, ESS batteries provide backup power in the event of a power outage, which can be particularly useful for those living in areas with unreliable power grids or for critical infrastructure such as hospitals or data centres.

Overall, ESS batteries are a valuable tool for the management of renewable energy sources and for ensuring a reliable and efficient energy supply. As technology continues to advance, it is likely that ESS batteries will become even more prevalent and play an even greater role in the transition to a more sustainable energy future.

You can get premium ESS Battery from Akira, reputed ESS & EV battery Battery Manufacturer in India.

Akira Why To Invest In Lithium Batteries Today

Lithium batteries were introduced during 1980-the 90s. The invention helped in revolutionizing laptop computers, cellular telephones, and other portable electronics markets. Lithium batteries are those batteries that have lithium as their anode. In the batteries, the charge moves from cathode to anode during charging and from anode to cathode when they are discharging. High efficiency and energy density and lightweight are the main characteristics of lithium batteries. 

Why Do You Need Lithium Batteries?

Out of other types of batteries available in the market, lithium batteries are contributing to increased application in emerging technologies. Take a look at the advantages of lithium battery over other available options-

1. Portability

Logistics is one of the main benefits that can be reaped by using lithium batteries. According to lithium battery manufacturers, it is the top reason why people invest in it. It can be taken anywhere without any overflow of acid.

2. Quick Charging

Yes, it is another big thing to be kept in mind while deciding on which battery to invest in. These batteries recharge much faster as compared to lead-acid batteries. That is why companies are actively using the battery to give a full day backup to mobile batteries by charging for a small period of time.

3. Free From Maintenance

You don’t need to worry about taking it to lithium battery manufacturers or call professionals frequently. Investing in this will help you in saving maintenance time. In addition, they don’t have any memory effect, which means they don’t have to be completely discharged before charging it again.

4. High Efficiency

If you are looking to choose a battery that is long-lasting, reliable, and stable, then a lithium battery is the answer. It is because they have denser energy that makes them capable of having high power capacity. They can also be used for power requirements like mobile phones and laptops.

5. High Cycle Life

Lithium batteries handle a life cycle of more than 3000 times in their lifespan of over ten years. They are lightweight and compact in size. That is why lithium batteries are used in multiple portable consumer electronic devices.

6. Cell Voltage

The voltage produced by a lithium battery is 3.6 volts which is much higher than nickel-metal hydride, nickel-cadmium, and standard alkaline cells. That is why lithium batteries require fewer cells in many applications. Even for smartphones, a single cell is needed which makes it simple to manage power.

Bottom Line

Lithium batteries have very distinct advantages as mentioned. You can leverage them all. If you are looking for effective and state-of-the-art technology in lithium batteries, then reach Akira Battery Manufacturers. The lithium-ion battery available in the company will help you get the highest quality. You can just call the professionals; they will guide you regarding the choice you should make. Visit www.ruchiragreenearth.com for more information.

The Unique Challenges of Lithium-Ion Battery Safety

The demand for lithium-ion batteries is growing at an exponential rate. The reason being the rise in the variety and number of IoT-based devices, battery-oriented material handling, and automation equipment. From high-capacity batteries to small smartphones, the high energy density of the cells costs less than other battery technologies. But there are some risks to using Li-ion batteries.

What Are Those?

As there are different requirements for batteries like Li-ion cells for smartphones, 3-12 Li-ion cells for laptops, and hundreds of them for airplanes and cars. They are produced in myriads of forms like a pouch, cylindrical, and prismatic. Cell cases can be soft and hard and electrodes can be stacked and wound. Some of the other problems include-

·       Over-voltage

·       Overcharge

·       Charging outside of the accepted

·       Over-discharging

·       Fast-charging of the over-discharged cells

·       Deep discharging

1. Internal Short Circuits

Overcharging and rough handling can lead to internal short circuits. When the battery becomes stuffed with the ions then it expands which can mechanically stress out the battery. Hence, electron-conducting metallic deposits can be the result.

2. Charging Problems

When the battery is not charged between the temperature +5 to +45 Celsius degrees it could suffer severe damages like cell rupture and runaway. It will end the decomposition and oxidation of the electrolyte.

3. Voltage Limits

Lithium-ion batteries have a high vulnerability to stress when voltage ranges outside the safe voltage. When the battery exceeds this range, then premature aging happens.

Battery Safety Is Must

Nothing to worry about the issues. Solutions come along with the problems.  Many battery manufacturers are striving to come up with solutions to the problems commonly faced. Battery Management System is the answer to all the battery-related issues. It acts as a watchtower inside the battery. It can-

·       Detect potential threats

·       Give protection to the battery from severe damages

·       Enhance the reliability, safety, and longevity of the batteries

But what really is BMS (Battery Management System)? It is a controller and a sensor that computes and measures data for ensuring the operation of the battery safely.

It also works to avoid the distribution of power and safeguards the battery pack from any kinds of loss and damage. The critical information and services that BMS provides are-

·       Over-cutting protection

·       Cell balancing

·       SoC and SoH Calculation

·       Data analysis and acquisition

·       Thermal protection

·       Over & Under Voltage Protection

·       Avoid thermal runaway with pre-emption

·       Warning of potential failure with detection

·       Stop thermal runaway with intervention

·       Minimize damage with containment

At the vehicle level as well, BMS can help you with offering information about safe driving, preventive protection, secure and rescue, and adaptive protection.

Lithium-ion Battery manufacturers are using technology to ensure the safety of the battery at the battery, vehicle, integration, and component level. Akira is a leading lithium-ion battery manufacturer that deals in high quality batteries for two wheelers and three wheelers. Visit them at www.ruchiragreenearth.com  to find the battery that suits your needs.