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“Lithium Ion Cylindrical Cells Vs. Prismatic Cells
Cylindrical and Prismatic Cells are the most common options on the market for building Lithium Batteries. Before you purchase a battery cell for your application consider the following advantages and drawbacks of each type of cell.Cylindrical Cells
Cylindrical cells are the most common cell type in use today. This design allows for better automation processes and techniques that increase consistency and lower cost.
Prismatic Cells
Prismatic cells have gained popularity because their large capacity and prismatic shape that make it easy to connect 4 cells together and create a 12V battery pack.
Cylindrical Advantages
Compared to prismatic cells, cylindrical cells can be produced much faster so more KWh per cell can be produced every day equaling lower $ per KWh. The electrodes in a cylindrical cell are wound tightly and encased in a metal casing, This minimizes electrode material from breaking up from the mechanical vibrations, thermal cycling from charging and discharging and mechanical expansion of the current conductors inside from thermal cycling. Many cells are combined in series and in parallel to increase voltage and capacity of the battery pack. If one cell goes bad, the impact on the entire pack is low. With prismatic cells if one cell goes bad it can compromise the whole battery pack. Cylindrical cells radiate heat and control temperature more easily than prismatic cells.
Prismatic Disadvantages
Prismatic cells are made up of many positive and negative electrodes sandwiched together leaving more possibility for short circuit and inconsistency. The higher capacity makes it difficult for the BMS to protect each cell from over charging and dissipating heat. The larger cell size minimizes the possibility for automation leading to a lower degree of consistency. The internal electrodes can easily expand and contract causing deformation which can lead to a internal short circuit and are more prone to swelling similar to lead batteries.
Electric Vehicle Advantage
An electric vehicle, also known as an EV, is powered fully, or partially, by an electric motor and E-Vehicle battery pack. EVery auto manufacturer in the world has an EV on the road right now or is close to releasing one, with many committed to electrifying their entire line-up over the next 10-15 years.The Electric Motor Advantage
EVs have better acceleration than gas cars. That’s because electric motors deliver full torque right away, unlike internal combustion engines that need to gear up. Electric motors are an incredibly efficient and durable technology, meaning less maintenance and a longer life time than gas engines.
The Electric Motor Advantage
EVs have better acceleration than gas cars. That’s because electric motors deliver full torque right away, unlike internal combustion engines that need to gear up. Electric motors are an incredibly efficient and durable technology, meaning less maintenance and a longer life time than gas engines.
The Battery Advantage
Electric vehicles use lithium-ion batteries, the same type of battery used in smartphones and laptops. EV batteries hold their charge for weeks at a time and are quick and easy to recharge. EV batteries are 90% recyclable and many companies are looking at re-purposing used-EV batteries for second-life energy storage. This means that at the end of your car’s life, the battery still has value, unlike old gas engines that are bound for the scrapyard.
An electric car, or electric vehicle, is powered fully or partially by an electric motor and battery pack. There are two types of electric car:
1.Fully Electric Cars are powered 100% by electricity and have zero tailpipe emissions.
2.Plug-in Hybrid Electric Cars have small battery packs for short all-electric driving distances (20-80 km) before a gasoline engine or generator turns on for longer trips. Plug-in hybrids differ from gasoline and diesel hybrids in that they provide dedicated all-electric driving distances.
How to take care of your electric two wheels battery
Electric Two-wheeler and Electric Bicycles are becoming very popular means of transportation. Either you want to be environment friendly or you want to avoid public transport in the Covid19 affected world, electric two-wheeler provides a very good option.There are many advantages of these two wheelers
1. Cheap to operate: Compared to their petrol counterparts, these vehicles are cost effective to operate.
2.Low maintenance needs: In an electric two-wheeler, there is nothing complicated to maintain. You need to make sure you buy your vehicle from a good quality manufacturer and the lithium ion battery is covered by 3-year warranty. For 3 years you will not incur any maintenance cost related to the drive system or the battery. On the other hand for a petrol scooter, you must change engine oil and do checkups based on km driven to keep the vehicle healthy and operational.
3.Never visit a gas station: In today’s Covid19 affected world, not going into a public place and being able to charge at home is a great advantage.
So, in this blog post I am going to talk about how to improve the battery life for eBike, eScooter or for any EV for that matter.
Most of the e-bikes and eScooters on the market use lithium ion battery packs. Some do offer different types of lead acid batteries but if you really want to maximize your return on investment, I recommend to avoid lead acid battery solution. The life of a lithium ion two wheels battery can be extended by using following few steps.
Overview
Most of the e-bikes come with a removable battery. Removable battery allows you to take the battery and charge it at a place of your choosing. In the current market there are many 36-volt 10ah and 36-volt 14ah batteries available for eBikes and 48v/60v systems for eScooters. Most of these batteries use cylindrical format 18650 cells. Some of the batteries do use pouch cells but those are very rare.
1.Charging: This is the most important thing to be careful about. The battery degradation is predominantly caused by charging. How fast you charge, at what temperature you charge, and till what SOC (State of Charge) you charge will determine the cycle life. Depth of discharge (DOD) is another factor that will affect the life of the battery. We charging and DOD are controlled then battery will have a very good life and give maximum bang for your buck.
2.Charge rate: Lower the charge rate better. It takes more time to charge the battery with lower C rate (Charge current/Battery Ah), but batteries generally like to be charged as slow as possible. With 40 km range I think most of the batteries will get charged in 3 to 4 hours without any issue. It is recommended to charge the battery at 0.3c or lower (0.3c = ah rating of the battery *0.3). You can easily check this by checking the amp rating of the charger.
3.Charge Temp: Charging battery in hot or cold temp is bad for cycle life. 25 to 30-degree Celsius is the best temp to charge your battery at. When battery is used it often heats up. As almost all two-wheeler battery packs are sealed type with no cooling, the battery temperature inside will be higher after usage. So do not plug in immediately after using the battery. If you keep it for an hour or so before starting to charge, then that will give battery enough time to reach the room temp. If air conditioning is on, then that will even allow battery to reach its optimal charging temp of 25 to 30 degree Celcius.
4.Depth of Discharge control: Lower the DOD better. If you do not utilize or need all the range for your EV, the best way to extend the battery life is to restrict charging to 80% of its capacity. Many battery packs come with LED indication. If you have 4 indicator lights, then charge only up to 3rd light. Basically keeping top of charge at 75% of the maximum capacity. for 36V lithium ion NMC, typically the maximum battery voltage will be 42V, but if you charge only till 40V or 39V, your battery life will almost double. Another charging habit to adapt is not to keep it plugged in overnight. If the battery charger has a cutoff or battery itself has a charge complete cutoff, then it is ok to plug it in overnight. But many batteries do not come with such cutoff, in that case battery voltage is maintained at highest voltage for extended period of time. This floating voltage will affect the cycle life of the battery.
5.Storage temp: Keep the battery at room temperature. Avoiding direct sunlight and hot temp is important to extend the battery life. Try to store the battery during or after charging at room temp closer to 25 to 30-degree Celsius. For vehicles without removal battery, park the vehicle in shade away from direct sunlight and heat. If you plan to not use the vehicle for some time, then better to keep the battery at 50% or lower SOC. This practice will help reduce the calendar fade of the battery.
If you follow these steps, then a good quality lithium ion battery can last easily close to 1500 cycles. Now let us say you get 30km for ebike and 60km in two-wheeler (With lower Depth of discharge). Then your two-wheeler is good for 45,000km of eBike and 75,000km for eScooter. Based on the data battery should easily last you more than 5 years. Taking small steps can go a long way to improve your battery life and in turn reducing your cost of ownership.
Advantages and disadvantages of the different electric vehicle battery
Electric vehicles are equipped with batteries. At this stage, the battery used in electric vehicles is mostly E Vehicle Lithium Battery.Compared with other batteries, lithium batteries are widely used in the energy of electric vehicles because of their advantages such as high voltage, high specific energy, long charge and discharge life, no memory effect, no pollution, faster charging, low self-discharge rate, first-class working temperature range and safety.So let me give a brief introduction to the advantages and disadvantages of the different electric vehicle battery.1. Lead-acid batteries
Advantages: Lead-acid batteries have low cost, good low temperature and a high performance-price ratio.
Disadvantages: low energy density, short life, large volume, poor safety.
Usage: Due to the low energy density and service life, it is not possible to have a good speed and a high range, generally used for low-speed vehicles.
2. NiMH batteries
Advantages: NiMH battery has low cost, mature technology, long life and durability;
Disadvantages: low energy density, large volume, low voltage, and battery memory effect. Contains heavy metals and causes environmental pollution when discarded.
Usage: Better performance than lead-acid batteries.
3. Lithium manganate batteries
Advantages: Lithium manganate battery is a positive material with low cost, good safety and low-temperature performance;
Disadvantages: The material itself is not stable, easy to decompose and produce gas, its cycle life decays quickly, it is prone to swelling, high-temperature performance is poor, and its life is relatively short;
Usage: Mainly used for large and medium type cores, power batteries, with a nominal voltage of 3.7V.
4. Lithium iron phosphate batteries
Advantages: Lithium iron phosphate battery has good thermal stability, safety, low cost and long life;
Disadvantages: low energy density, fear of low temperatures.
Usage: When the temperature of the battery is 500-600 C, its internal chemical composition begins to decompose, and puncture, short circuit, high temperature will not burn or explode, and its service life is longer.
5. Ternary lithium batteries
Advantages: Ternary lithium-ion batteries have a high energy density, long cycle life, and no fear of low temperatures.
Disadvantages: Insufficient stability at high temperatures.
Purpose: Pure electric vehicle with required mileage, which is the mainstream direction, suitable for cold weather, and more stable battery at low temperatures.
Top 5 Reasons Why You Should Buy an Electric Trike Bike
For the most part of the past year, almost everyone in the world has been holed up in the confines of their homes. Most outdoor activities were halted, and we were left with no choice but to find ways on how to keep moving inside the house.However, as restrictions ease this year (and with access to vaccines), some people are back on their feet in searching for safe ways to enjoy the outdoors. One activity that has grown especially popular in countries is riding electric trike bikes.
The electric trike industry also grew popular among adults, seniors, and those with limited abilities. How so? In this article, we will find out why more and more people are making the switch to e-trikes, and the reasons why you should consider buying one too!
What is an Electric Trike?
An electric tricycle, or most commonly known as the e-trike, is the three-wheeled sister of the electric bike. It is a tricycle that is powered by an electric motor, and mostly relies on E tricycle lithium battery power to operate. Unlike the manual tricycle, many have reported that electric trike bikes are more convenient and easier to use.
With manual tricycles, one of the most prominent disadvantages would be climbing up hills. This is because trikes are generally heavier than bikes, and pedaling upwards could be hard using leg power alone.
To solve this problem, an electric trike is furnished with an electric motor to its drive train to make pedaling easier as it adds speed to every ride.
Additionally, there is a wide range of electric trikes for adults and seniors available in the market these days. With the electric ride’s focus on balance and storage, it has become a favourable companion for those who seek for riding comfort and stability.
There are many reasons why man favour the modernized electric trike bikes over the traditional ones. You will learn more about them as you read on!
Why Should You Buy an Electric Trike?
As we have mentioned earlier in this article, many are now discovering the wonders of an electric three-wheel trike. This is because it provides the same benefits of an electric bike, and more. It can become a trusty transport alternative, a way to enjoy outdoor activities, and even a dependable ride as you fulfill your daily chores like picking up the groceries, or taking your dog to the park.
The sky is the limit when it comes to these electric trike bikes, and these are a few reasons why!
1.Electric trike bikes help you get active, improve your lifestyle, and promote fitness. It is a known fact that in order to live a healthier life, one must become more physically active. Riding an electric trike bike regularly can help you in achieving that, as it provides ample exercise that your body needs. It is one of the best ways to reduce health risks and to get you moving towards a more active lifestyle.
2.With and e-trike, you get to help save the environment. Consumers are now becoming more aware of the environmental impact an electric ride has. Electric trike bikes are one of the greener alternatives that can help lessen our environmental foot prints on the planet.
Powered by rechargeable lithium-ion batteries, some electric trike bikes can already travel up to 120KM on a single charge. These electric trikes for seniors and adults give out zero emission and do not burn any kind of fossil fuels. Unlike cars which reportedly emit approximately two tons of carbon dioxide each year, electric tricycles do not release any harmful gases into the atmosphere.
3.It’s a practical alternative to cars. For people who are commuting every day, heavy traffic is one of their dilemmas. With this, some scramble on their feet to find a quicker and hassle-free way to go out and about. In this regard, it has been proven many times that an electric bike or an electric trike can be an alternative to a car.
One of the most popular benefits of an electric trike bike is how it can shorten the length of your travel due to its pedal assist motor. Not only that, an adult electric trike’s ability to stop and start quickly makes it perfect for riding in cities where you would usually have to stop ang go at intersections and traffic lights. It is also swift enough to make tight turns maneuverable compared to cars.
4.Storage will be the least of your problems. If you’re worried about where to stash your essentials aboard an e-trike, we have the answer for you. Electric cargo trikes are known for their wide rear racks that can carry your stuff for when you go to work or school. It can also carry shopping bags, other gear for your outdoor activities, and even your pets! These rear racks are wide enough to assure that you have a convenient ride on the daily.
Adding to that, electric trike bikes are now being utilized in essential jobs like food and goods delivery. In a way, they have helped small and big businesses in cut the riders’ travel costs, and lean onto a more eco-friendly and sustainable system.
5.There’s and e-trike for everyone! Depending on how and where you want to use it, there will always be a right e-trike for you. You can take your e-trike to a trip to the mall or the grocer’s, on a light and fun cruise at the park or beach, to climb up hills with your friends, to ride with your pets or even your grandparents, and most commonly, to go to and school or to work. An electric trike is able to accompany you in almost all kinds of situations!
