How to maintain the power lithium-ion battery in winter?

1. The choice of lithium-ion batteries when buying electric vehicles. Many passenger cars today use ternary lithium-ion batteries, the single model 18650, which uses different strings and different modules to form power lithium-ion batteries with different voltage levels and power levels. Electricity varies according to different models. There are 40 kilowatt-hours of electricity and batteries with more electricity. Because the ternary lithium-ion battery can have a higher density than lithium iron phosphate, this is also to better improve the energy density and better meet the design requirements of the national standard. The current energy density of passenger cars is 120WH/g, which requires most electric vehicles. Cars can have them. Batteries are relatively expensive among vehicle parts, so there are many factors to consider in the design of batteries. When designing power lithium batteries, many manufacturers will design two methods, for example, one with heating mode and the other without With heating mode, the heating mode is definitely more expensive, this is also to meet the needs of customers at different prices. But Li Peng suggested that if you consider starting an electric car, you should not save the money. The heated lithium battery will definitely be worth the money, and you can feel its use in winter. 2. Don't overcharge or over discharge when using lithium ion batteries in winter. We all know that lithium ion batteries can only be charged and discharged through chemical reactions. Then the influence of temperature on the chemical reaction is relatively large, so the battery power attenuation in winter is more reasonable. So in winter, when we are driving electric cars, we must be careful not to over-discharge the power lithium-ion battery. When the power drops to 30% or 20%, we can take time to recharge. Don’t run out of power. This will over-discharge. It will cause bubbles to appear inside the battery, which is why our battery will have flatulence. 3. The awareness of fire prevention during charging in winter must be high. Charging electric vehicles in winter and check the charging equipment. At present, we generally use 3 charging modes. There are 30kw fast charging piles and 7kw slow charging piles. The last is simple Mode 2 charging pile with control guide device is now available. Since fast charging piles are more expensive, the number of popularized piles is far from our requirements. Therefore, many people consider the principle of proximity and will not use fast charging. Slow charging piles can be more than fast charging piles, but they are far from meeting the requirements quantity. Then the problem is coming. In addition to the centralized lease of electric vehicles, manufacturers will build some charging piles. As an individual consumer, buying an electric car is probably because of his home 220V charging function. Many people will choose to use mode 2 for charging, because this device is simple and easy to operate, cheap, and small in size. Can be carried. Many private car buyers will use this kind of charging pile for charging, so it involves the problem of separate wiring. If your socket is not enough, some people will connect it privately. At this time, you must know how much power and current your pile is. How big is your wire diameter to meet such a large current and work for a long time? If it cannot be satisfied, there is a risk of fusing. You must not connect privately. You must consult professional technicians before wiring. Many fires except lithium-ion batteries In addition, it is caused by the short circuit of the circuit, so we must pay special attention when charging. 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: What are the advantages of lithium-ion batteries compared to lead-acid batteries?