Lithium-ion battery electric vehicles, with their sleek and minimalist design, are gaining increasing acceptance among consumers. But just how good are lithium-ion battery electric vehicles? Are they really as good as everyone says?
Currently, lead-acid battery electric vehicles are the most common type sold on the market, but many regions have begun to introduce lithium battery electric vehicles. As the name suggests, lithium battery electric vehicles are simply those that replace lead-acid batteries with lithium batteries. But are lithium batteries better than lead-acid batteries? Are they really as good as companies and dealers claim? With the country strongly advocating energy conservation, green practices, and environmental protection, will these issues truly become widespread? These questions remain unanswered.
When it comes to whether lithium batteries for electric vehicles are good or not, everyone agrees that "lithium batteries are lighter and have a longer lifespan than lead-acid batteries, but they are very expensive." However, when I ask for more details about their advantages, everyone seems unable to answer.
Advantages of lithium battery electric vehicles:
1. Lithium batteries have a long lifespan, are lightweight, and are compact. The power performance of lithium battery electric bicycles is similar to that of lead-acid battery (basic electric bicycles). A charge takes 6-8 hours, and depending on the battery capacity, it can travel 30-45 kilometers. The weight is only about 1/5 of that of lead-acid batteries. The biggest advantage of lithium battery electric bicycles is their long lifespan.
Disclaimer: Those who say lithium batteries are expensive are only seeing the surface. In fact, if you calculate carefully, the cost is about the same as that of lead-acid batteries. Currently, lithium batteries generally have a 2-year warranty, while lead-acid batteries have a 1-year warranty.
2. Lithium batteries have activation-free characteristics. It should be noted that lithium batteries enter a dormant state after being stored for a period of time, at which point their capacity is lower than normal, and their usage time is shortened. However, lithium batteries are easily activated; just 3-5 normal charge-discharge cycles are sufficient to activate the battery and restore its normal capacity. Due to the inherent characteristics of lithium batteries, they have virtually no memory effect. Therefore, users do not need special methods or equipment to activate new lithium batteries.
3. Lithium batteries have a memory effect. Consumers have always worried about the memory effect when charging lead-acid and nickel batteries. However, with lithium batteries, everyone can breathe a sigh of relief, as lithium batteries do not have a memory effect. If some consumers still don't know how to charge lithium batteries, please read the following information.
Disadvantages of lithium battery electric vehicles:
1. The high price of lithium battery electric vehicles is mainly due to lithium batteries.
Currently, lithium battery electric bicycles are generally several hundred to a thousand yuan more expensive than lead-acid battery electric bicycles, making them difficult for consumers to accept in the market. Lithium batteries are lightweight, environmentally friendly, and do not cause pollution after disposal. Once the application technology matures and market sales increase, the price of lithium battery electric bicycles will decrease.
2. Overcharging lithium batteries can be counterproductive.
Lithium batteries and chargers automatically stop charging once the battery is fully charged; there is no "trickle" charging for 10+ hours as claimed by nickel-cadmium chargers. In other words, leaving your lithium battery on the charger after it's fully charged is pointless. Furthermore, no one can guarantee that the battery's charge/discharge protection circuitry will never change or that its quality will be flawless, so your battery will be constantly teetering on the edge of danger. This is another reason why we oppose prolonged charging.
Furthermore, on some electric vehicles, if the charger is not removed after a certain charging time, the system will not only fail to stop charging but will also begin a discharge-charge cycle. While the manufacturer may have its reasons for this practice, it is clearly detrimental to battery life. Therefore, after purchasing a lithium-ion battery electric vehicle, it is essential to consult the manufacturer or dealer to ensure proper battery maintenance.
3. The power performance of lithium batteries needs to be improved.
Lithium batteries are much less resistant to fluctuations in charge and discharge than lead-acid batteries. This is one of the main reasons why lithium batteries cannot be effectively used in high-power vehicles, resulting in reduced durability.
4. Lithium-ion batteries have prominent safety issues.
The safety of lithium batteries still needs improvement. The risk of lithium battery fires, combustion, and even explosions cannot be completely eliminated at present. Vehicle collisions can cause the battery's positive and negative electrode materials to rupture the separator. The instantaneous extremely high current during braking, when energy rapidly recharges into the battery, can also lead to short circuits, increased temperature, and potentially combustion or even explosion. The cause of the fire is the release of lithium ions due to collisions or short circuits, which ignite upon contact with air. Furthermore, the electrolyte in lithium-ion batteries is an organic electrolyte, which is more prone to ignition and combustion upon contact with air.
5. Matching issues for lithium battery electric vehicles
According to our investigation, the supporting external equipment such as motors for lithium battery electric vehicles is not yet mature enough.
