Lithium batteries are unanimously recognized by automobile manufacturers and battery manufacturers due to their advantages such as high energy density, large capacity, and no memory. At present, the focus of research and development in various countries is lithium ion batteries.
1. Advantages of li-ion battery used in electric car
①Environmental protection: the whole production process is clean and non-toxic, and all raw materials are non-toxic;
②Small size: The lithium battery has a higher energy density, and the lithium battery has a smaller volume under the same capacity. Manufacturers can make a lot of space when designing vehicles to achieve some other functions.
③Longer cycle times: General lead-acid batteries have a severe attenuation after one year of use, and users need regular maintenance to replace the batteries. Lithium batteries are basically maintenance-free within three years under normal use intensity.
④ With activation-free feature: when using lithium batteries, it should be noted that the battery will enter the sleep state after being placed for a period of time. At this time, the capacity is lower than the normal value, and the use time is also shortened.
However, the lithium battery is easy to activate, as long as 3 to 5 normal charge and discharge cycles can activate the battery and restore the normal capacity. Due to the characteristics of the lithium battery itself, it has almost no memory effect.
Therefore, the user's new lithium battery does not require special methods and equipment during the activation process.
2. Disadvantages of li-ion battery used in electric car
①Lithium battery power needs to be improved: lithium batteries are much less resistant to fluctuations in charge and discharge than lead-acid batteries. A major symptom of the current inability to use lithium batteries for high-power vehicles is here, resulting in durability decline.
②There is a danger of explosion: when the lithium battery is charged and discharged with a large current, the temperature inside the battery continues to heat up, the gas generated during the activation expands, the internal pressure of the battery increases, and the pressure reaches a certain level. Leakage, fire or even explosion.
③ Lithium battery electric vehicle supporting problems: According to the survey feedback of the editor of the global electric vehicle network, at present, the external equipment related to the lithium battery electric vehicle and other supporting motors are not mature enough.
④High price: At present, the price of lithium battery electric bicycles is generally several hundred yuan to one thousand yuan higher than that of lead-acid battery electric vehicles, so it is difficult for consumers to recognize them on the market.
Lithium batteries are lightweight, environmentally friendly, and will not cause environmental pollution after being discarded. Once the application technology is mature and the market sales increase, the price of lithium battery electric bicycles will drop somewhat.