Author ：Iflowpower – Portable Power Station Supplier
The decrease in battery life in winter is a common phenomenon. Part of the reason is the power loss caused by hot air conditioning, and the other part is the effect of low temperature on the material of lithium ion battery. Where did the life disappeared in winter? How to maintain the battery to extend your life? First, air conditioning heating, it is important to have two forms, one is the PTC resistor air conditioner, the other is the heat pump air conditioner.
The PTC air conditioner consumption is high, but the technology is simple, the cost is also low, so it is widely adopted, and the heat pump air conditioning technology is more complicated, the cost is higher, but the power consumption is lower, so some high-end models will be selected. Like this technology. Where did the life disappeared in winter? How to maintain the battery to extend your life? But no matter which technique, air conditioning heating is a well-deserved power consuming house in winter.
In general, it is necessary to open a warm air during the driving process. The total battery will at least be a 40% off. This is a very terrible number.
Many new energy owners are in order to save electricity. It is rather freezing. Is it going to tears ~ What is the life disappeared in winter? How to maintain the battery to extend your life? In fact, the winter electric car will warm and have a method of returning to the next, that is, open the seat heating and steering wheel heating.
We have previously found that the electric power consumption of the seat steering wheel is almost about half of the air conditioner, which can be significantly limited, but its disadvantage is that the temperature distribution is uneven, that is, you may be very temperature, But the upper body is too late to warm up. This is also to have yourself to decide ~ Why are you going to live in winter? How to maintain the battery to extend your life? Next, let's see the effect of low temperature on lithium-ion batteries. In general, the lithium-ion battery is only more stable within 0-40 degrees.
Once it spans this temperature range, its capacity and life will be discounted, especially in a low temperature environment, this loss is more obvious. We will find that only 1 km of winter is driving, but it has dropped 2-3 kilometers of power, then who has disappeared with the electricity to eat? ■ Where is the power to disappear in the cold wind? Discharge at the same magnification, the lower the discharge voltage of the lithium ion battery when the external temperature is lower. As shown in the figure below: Where is the life that disappears in winter? How to maintain the battery to extend your life? From the curve of the figure, the discharge voltage of the battery is about 4.
2 V, while the -20 degree is reduced to about 3.9V, due to the decrease in the discharge voltage, the discharge cutoff voltage is reached faster during the discharge process. (3MV), resulting in low temperature discharge capacity below normal temperature capacity.
Where did the life disappeared in winter? How to maintain the battery to extend your life? Therefore, the capacity of lithium-ion batteries is not disappeared, but it is only unable to release all in the normal voltage range (3.0V). If the discharge cutout voltage can be continued, then the remaining capacity can be released.
But the problem is that the excessive voltage has not been able to maintain the normal use of the motor, so this method does not have feasibility. Where did the life disappeared in winter? How to maintain the battery to extend your life? Simply, it is not disappeared at low temperature, but it is not completely released. This phenomenon has passed in winter, and the temperature gradually recovers.
After charging and discharge, it can be recovered, which belongs to a reversible capacity loss. ■ My car is not only a lot of regulations in winter, but also the charging is slow, and even if it does not enter this is related to the charging principle of the battery. When charging is charged, the lithium ion in the battery may not be embedded in graphite negative electrode, thus precipitation A metal lithium dendride is formed on the surface of the negative electrode.
This reaction will consume lithium ions that can repeatedly charge discharge in the battery, and greatly reduce battery capacity. Moreover, the precipitated metal lithium dendrites may also pierce the diaphragm, thereby affecting safety performance. Where did the life disappeared in winter? How to maintain the battery to extend your life? The most critical is that the lithium phenomenon caused by this low temperature charge is an irreversible reaction that causes permanent damage to the battery capacity.
Therefore, the manufacturer has done some necessary restrictions to reduce this damage, that is, ladder charging. Where did the life disappeared in winter? How to maintain the battery to extend your life? By reducing the current size, the lower the lithium lithium phenomenon, the lower the temperature, the lower the current limit. The rate of slowing the chemical reaction allows lithium ions to get more space to enter the graphite negative electrode.
It is also because it reduces the current, so the charging speed will become slow. If some extreme low temperature environments, the battery system will even enter the protection state, that is, we often say that. ■ How do we reducing battery damage and extend your service life? 1.
Prevent the lower temperature charge temperature, the greater the damage to the battery during charging. In the winter, it is best to choose to charge when sunny during the day, try to prevent charging in the night or low temperature environment. Where did the life disappeared in winter? How to maintain the battery to extend your life? 2.
First hot car first drive a distance. When the temperature of the battery pack is raised, charging, or when the battery is turned off, it is possible to charge the warm battery, reduce the waiting time of charging, can also reduce the battery. Injury.
3. Select the battery heating function with battery heating to heat the battery temperature within 10-35 ° C at ultra-low temperatures. It can extend the winter life mileage, but also reduce low temperature charging damage, and shorten the charging time is a very practical function in winter.
Where did the life disappeared in winter? How to maintain the battery to extend your life? 4. With the charging, prevent low-power charging, do not charge the battery, and the amount of electricity is preferably more than 10%. If it is not used for a long time, it is necessary to ensure that the remaining power of the vehicle is greater than 30%.
Frequently exhausted, charging, not only the charging time is longer, but also is not conducive to maintaining battery life. Because the battery pack consists of a plurality of battery monomers, the power consumption will cause a large difference in storage capacity of different unit cells, and the performance is drastically decayed. 5.
Take care of the charging port to keep the charging interface to keep cleaning. Once water or foreign matter enters the charger interface, it is easy to cause short circuit inside the charging interface, which affects the life of the battery. Where did the life disappeared in winter? How to maintain the battery to extend your life? 6.
Develop good driving habits We should pay attention to the start of speed, step down, prevent the throttle or brakes. Small speed, not only guarantees safety, good driving habits can also effectively reduce the loss of brake pads and the speed of battery power consumption. ■ Summary Winter life loss is because low temperature can't be put in the battery, and the season will be completely restored.
The charging speed of winter is slow or filling, because the manufacturer limits the irreversible damage to the battery capacity in order to alleviate the low temperature charge, limit the battery temperature to reduce the current limit, improve the charging speed. .
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