Choose high-efficiency charging or high-quality experience for rechargeable batteries?

Rechargeable batteries bring high-efficiency charging or high-quality experience? Since the advent of mobile phones, there has always been such a problem: many mobile phone user manuals or shop assistants will tell you how long the mobile phone will continue to be charged for the first few times, otherwise it will affect the performance and life of the battery . If you understand the battery and its charging characteristics, it is easy to break this superstition and stop following their instructions. With the widespread popularity of smart phones and the popularity of electric car manufacturers, battery capacity and charging speed have become topics of general concern, and related myths have also emerged. Recently, an article entitled 'No-negative battery may revolutionize electric vehicles and mobile phone batteries' has been widely circulated on the Internet. This is a subversive message. Everything is yin and yang. As a battery, there is no negative electrode. Where is the anode? It is also unlikely to exist in the form of a battery. How will our electric cars and mobile phones use it? I believe that through the revolutionary improvement of battery materials and structure, we may get a huge increase in capacity density, a significant increase in power density, safety, and better products. But before it really becomes a reality, don't use grandstanding things to attract people's attention and make people appear some unrealistic fantasies, but you must live in reality, let the struggle of the heart, our psychological and physical diseases bring about Society. Many years ago, affected by the concept of environmental protection and energy saving, the batteries used in our homes were all rechargeable Ni-MH batteries. Later, I saw the news that the Japanese manufacturer’s nickel metal hydride battery speed has been completed within half an hour, and my own battery is more than half of the company, so I was born with the impulse to buy a fast charger, the universal Huaqiangbei impulse It turns out that there are fast charging products on the market, so the sad thing happened to me, all the batteries have dropped sharply after filling the capacity, and finally had to give up. Although this incident did not have any bad ideas about nickel-metal hydride batteries, we have never bought them since then. It can be seen how much negative emotions have affected our lives and related industries will inevitably be affected. In fact, the damage caused by the battery is not necessarily due to the charging speed, or it may be because it does not follow the charging strategy of nickel-metal hydride batteries, because each battery has its own characteristics. It is wrong and the problem arises. Regarding the lithium-ion batteries we use today, I saw this picture many years ago: This is a graph of the relationship between the charge-discharge rate, capacity, and cycle life of lithium-ion batteries. The vertical axis represents capacity, and the horizontal axis represents cycle life. The curves drawn at different points represent the relationship between battery capacity and cycle life during charging and discharging at different charging rates. C is the charge and discharge rate data related to the battery capacity. Assume that the capacity of the battery is 1000mAH. If the battery is charged or discharged with a current of 1000mA, it will take an hour to fully charge or discharge all the energy. According to these meanings, the figure tells us as follows: The initial capacity of the battery is 900mAH. If the charge and discharge current of the battery is 1C or 900mA, after 500 cycles, its capacity is still about 780mAH. If the charge and discharge current is 2C, 1800mA, after 500 cycles, its capacity will drop to about 500mAH. This kind of information left me with the impression that if a lithium-ion battery is charged and discharged at a speed of 1C, it still has 80% of its original capacity after 500 cycles. Unfortunately, this information is not completely accurate, it just represents the characteristics of a certain type of battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of two kinds of charge balance in lithium-ion batteries