Life of lithium battery pack for electric bicycle
The service life of lithium battery pack is closely related to the daily use and maintenance of users.
A charging cycle means the process of all battery power from full to empty, and then from empty to full, which is not equivalent to charging once. For example, a lithium battery uses only half of its power on the first day, and then charges it slowly. If this is still the case the next day, that is, half of it is charged, and a total of two times are charged, this can only be counted as one charging cycle, not two. Therefore, it may take several times to complete a cycle. After each charging cycle, the battery capacity will be reduced a little. However, the power consumption is small, and the range is very small. After many cycles, high-quality batteries will still retain 80% of the original capacity. Many lithium battery power supply products are still used as usual after two or three years. Of course, lithium batteries still need to be replaced after their final life. The so-called 500 times means that the manufacturer has achieved about 625 rechargeable times at a constant discharge depth, reaching 500 charging cycles. Due to various effects in real life, especially the discharge depth during charging is not constant, so “500 charging cycles” can only be used as a reference battery life.
The capacity of lithium batteries will be reduced every time a charging cycle is completed, but this proportion is very small. After multiple charging cycles, high-quality lithium batteries will still retain 80% of the original battery capacity. Many lithium batteries of electric vehicles can still be used normally after three years of use, so it still depends on the quality of lithium batteries.
Method for prolonging service life of lithium battery of electric bicycle
If you want to increase the life of lithium battery of electric vehicle, you should pay attention to the following points when using it.
1. The smaller the discharge depth of the battery each time, the longer the service life of the battery. Therefore, no matter how large a lithium battery pack is used, users should develop the good habit of charging with use.
2. High current discharge will do some damage to the battery of electric bicycle, so please use the pedal to help when starting and uphill.
3. When the battery needs to be placed for a long time, the heart must be fully charged and replenished regularly, usually once 1 ~ 2 months. For users whose daily traffic distance is less than 30km, if the motor, controller, charger and other factors are good and the use method is not improper, the minimum service time of a good set of electric bicycle batteries can be guaranteed to be more than 1 year.
Method for selecting lithium battery electric bicycle
1. Look at the brand
At present, there are many electric bicycle brands. Consumers should choose brands with long operation time, low repair rate, good quality and reputation. For example, choose enterprises that have passed ISO9001-2000 certification of quality management system. If you are not sure, you can buy some big brand electric bicycles,
2. Heavy service
At present, the parts of electric vehicles are not universal, and the maintenance can not be socialized. Therefore, when selecting electric vehicles, we must pay attention to whether there is a special maintenance service department in the region. If we want to be cheap and ignore after-sales service, it is easy to be fooled.
3. Select vehicle type
Generally, electric bicycles can be divided into luxury type, ordinary type, front and rear shock absorber type and portable type. The luxury model has complete functions, but the price is high, and the ordinary model has simple structure, economy and practicality; The portable type is light and flexible, but the stroke is short. Binglan electric vehicle reminds consumers to pay attention to this when purchasing.
4. Check accessories
The strength and performance requirements of electric bicycle parts shall be higher than those of bicycles. When purchasing, the user should see the quality of the selected parts of the whole vehicle, such as whether the welding and surface of the frame and front fork are defective, whether the manufacturing of all parts is excellent, whether the double support is solid, whether the tires are famous brands, whether the fasteners are rustproof, etc.
5. Consider continuous mileage
The driving range of a new battery with a capacity of 36V / 12Ah is generally about 50km. Generally, the longest distance of riding every day is about 35km, which is more suitable (due to the influence of road conditions on the actual driving range). If the longest distance of riding every day exceeds 50km, it is necessary to consider whether there is the possibility of charging twice a day. If there is no such possibility, it is not suitable to buy electric bicycles.
Sometimes it’s not the poor quality of the electric car you buy or the bad battery, but the improper charging method leads to the premature loss of the battery.