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Will frequent fast charging reduce the service life of electric vehicle CR2032 button cell batteries?
With the popularity of new energy vehicles, more and more people are seen driving pure electric vehicles in cities. The increase in the number of users has led to a rapid increase in the demand for charging piles, and fast charging has become one of the most core needs of many car owners when using pure electric vehicles. However, in actual use, many car owners are also worried that frequent fast charging will accelerate the loss of power lithium CR2032 button cell batteries and reduce their service life? So what is the real situation?
Does frequent fast charging damage battery life?
Frequent fast charging will have a certain degree of impact on the CR2032 button cell batteries currently installed in electric vehicles, and the degree of impact varies depending on the type of battery. At present, electric vehicles are generally equipped with lithium-ion CR2032 button cell batteries and lead-acid CR2032 button cell batteries, among which lithium-ion CR2032 button cell batteries also include lithium iron phosphate CR2032 button cell batteries and ternary lithium-ion CR2032 button cell batteries. Different types of CR2032 button cell batteries need to be analyzed differently.
Lead-acid CR2032 button cell batteries are currently mainly used in micro electric vehicles. Generally, the fast charging mode is divided into three sections: constant current, constant voltage, and trickle charging. Since the current and voltage of fast charging are too large, the heating of the battery will inevitably reduce the electrolyte inside the battery, resulting in reduced capacity and a continuously decreasing driving range.
Lithium-ion CR2032 button cell batteries are lightweight and have a high energy density. They are currently the most commonly used battery products in most electric vehicles. Lithium-ion CR2032 button cell batteries are devices that generate electrical energy through chemical reactions. When fast charging is performed, large current and voltage inputs are generated instantly. Frequent use of fast charging will reduce the battery's reduction ability, thereby reducing the number of charge and discharge cycles and causing certain damage to the battery.
For lithium iron phosphate CR2032 button cell batteries, the number of cycles will decrease at low temperatures, resulting in a decrease in battery capacity. For lithium iron phosphate CR2032 button cell batteries with relatively low density, fast charging will only make matters worse and reduce driving range. Low temperatures have little effect on ternary lithium-ion CR2032 button cell batteries, but they will show unstable characteristics at high temperatures. For example, if a large current input is used when the external temperature exceeds a certain range, it may cause a battery in the battery pack to overheat and cause thermal failure in the long run.
Compared with the two, the safety of lithium iron phosphate CR2032 button cell batteries is relatively high in fast charging mode, which is due to its low energy density and less impact on the battery core in fast charging mode. However, the volume of ternary lithium-ion CR2032 button cell batteries is smaller and the density is higher. It is precisely because of its active chemical properties that it is easier to react with oxygen in the air for oxidation. When the charging temperature is a certain percentage higher than the specified range, it is easy to burn. Therefore, in fast charging mode, the impact on the core of ternary lithium-ion CR2032 button cell batteries is greater.
However, pure electric passenger cars are safer when charging because of their smaller battery volume, higher density, and more rigorous battery protection and charging safety.
Although fast charging has brought certain impacts to electric vehicle CR2032 button cell batteries, proper use can still provide more convenience for car owners. At present, the research and development of fast charging technology has become the focus of global car companies.
In the research conducted by technology companies in my country, Europe, the United States, Israel and other countries, the technology for improving charging efficiency and battery life is quite intensive. It is reported that MissionE, a concept car of Porsche, uses an 800V charging voltage system, which can charge the vehicle 80% in 15 minutes. Tesla's super charging station uses only 480V DC in DC fast charging mode, so it can achieve 80% charging in 40 minutes. Previously, foreign media reported that Toshiba has developed a new fast-charging battery. The researchers claim that it can be fully charged to 90% in 5 minutes, and has a 10-year life and high level of safety. In addition, there is also the latest news that a US company that studies solid-state power said that BMW and Toyota may introduce solid-state battery technology in the future. This technology can allow electric vehicles to have a range of up to or even more than 800 kilometers.
First of all, as an emerging technology, fast charging is applied to the field of electric vehicles and faces many bottlenecks. For example, the inconsistent charging interface of the vehicle models makes the fast charging standards inconsistent. Of course, some foreign brand car companies have begun to align with my country's standards. For example, Tesla has begun to design models that meet my country's charging interface standards.
Secondly, my country's power system hopes that car owners will charge slowly at night. Some fast charging station outlets face problems such as difficulty in obtaining sites and insufficient capacitance. There may be certain difficulties in popularizing them on a large scale.
Of course, with the popularization of fast charging technology, the higher the current and voltage of charging and discharging, the more its safety cannot be ignored. While emphasizing speed, what should be ensured more is the safety of battery use, such as the design and layout of the battery pack, and reducing safety issues caused by battery damage through rigorous design.
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