What methods can extend the service life of power lithium-ion batteries?

1. Prevent the battery from being overcharged. The battery cannot be fully charged, that is, charging the battery frequently will affect the service life of the battery. Regarding one of the reasons for this, we can get some relevant experience from the battery in the most common mobile devices that can only be used for three or four years. To give an example close to life, the mobile phones commonly used in our daily life, such as Apple iphone6s, or Xiaomi mobile phones, Huawei mate7 mobile phones, etc., in most cases, wait until the battery is completely exhausted, and then fully recharged. In this way, often The full charge of the battery is actually very serious to the lithium battery. The result is that the mobile phone battery is not durable after about three years. For example, in a car, Nissan’s leaf, an electric car, has a setting to increase the service life of the battery. The battery is charged to 80% and then stopped. Although this reduces the mileage, it can greatly increase the service life of the battery pack. This kind of setting is completely satisfactory for daily commuting. The key is one of the easiest ways to improve battery life. For electric vehicles, it is not suitable to be fully charged. There is another reason, that is, when the electric vehicle is braking or going downhill, it can recover part of the energy and then recharge it to the battery, so this requires a certain charging space for the battery pack. , It is not sure when to charge the battery by regenerative braking during driving. 2. Regarding pure electric vehicles, the battery pack prevents deep discharge. For pure electric vehicles, it corresponds to the above prevention of overcharging, which prevents deep discharge. One of the characteristics of lithium batteries is that they are partially recycled and cannot be used for deep power. There is no memory effect for lithium ions, so the use of partial discharge has no effect on the battery and will not reduce the battery's capacity. In the case of Nissan Leaf, there are 12 scales on the battery charge state on the instrument panel, which generally allows you to keep the battery level between 3-10 scales, which means you can use it at will during this period. Regarding a better battery energy management system, when the battery power reaches a certain threshold, a warning will be issued, 'How far are you going to drive?' u0026rdquo; to remind you to charge according to your itinerary. 3. Regarding plug-in hybrid electric vehicles, you can consider using the 'mountain mode' based on the above to prevent excessive battery discharge. For plug-in hybrid electric vehicles like Toyota Prius or extended-range electric vehicles, such as Chevrolet Volt, BMW i3, etc., Almost always use up the battery power before switching to the gasoline engine mode. Fortunately, because of the battery management system, know when to stop using the battery to prevent deep discharge. However, there is a situation that the current battery management system has not been able to identify, that is, there is a driving condition that requires high-power driving such as climbing a long slope in your driving route. If you use the battery blindly, it is easy to change The battery's power is exhausted, and secondly, it may cause the battery to discharge deeply. If you can switch the working mode to mountain mode before climbing a hill, that is, the mode where the engine works, or choose to leave the EV mode at a certain point in time, this can save at least 20% of the battery's power. In addition, I want to explain again. In fact, the Toyota Prius operating system provides a similar operation option for the driver to exit the pure electric mode. You can use more gasoline and less battery during this period of driving time. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What are the performance advantages of lithium iron phosphate batteries?