How will the low temperature in winter affect new energy vehicles?

Compared with other seasons, the biggest difference in winter is the low ambient temperature. In low temperature environment, the fuel consumption of traditional fuel vehicles will increase. According to different types of new energy vehicles, the situation will be different. Among them, the fuel consumption of hybrid vehicles will also increase, and pure electric vehicles will have serious low temperature attenuation. The main feature is that the cruising range of electric vehicles will drop a lot and the charging speed will slow down. It can be said that low temperature has an impact on the energy consumption of all models on the market at present. But the biggest impact is pure electric vehicles. Low-temperature attenuation of power batteries for electric vehicles: At present, most power batteries for electric vehicles are ternary lithium batteries. In winter, due to the influence of low temperature. The chemical molecular activity of power battery will decrease, resulting in slow chemical reaction. The direct performance of these changes on the power battery is that the charging speed will be slower and the cruising range will be reduced. When the outside temperature is around-10 degrees, the cruising range of power battery can be attenuated by 30%. When the temperature is MINUS 20 degrees, the cruising range will drop by more than 50%. The lower the temperature, the more attenuation. When a car is charging, it will also be affected by battery attenuation, which will lead to a longer charging time. These two aspects will directly affect the normal use of vehicles. Heating systems such as air conditioning and heating consume a lot of electricity: driving in winter, for comfort. Most people will turn on the air conditioner in the car. The hot air of electric vehicle air conditioner is generated by resistance heating, and the power consumption will reach about 6 degrees per hour, which is equivalent to consuming one kilometer of cruising range every 2 minutes. All those with steering wheel heating and seat heating are turned on. The use of these heating devices is also a big power consumer of electric vehicles in winter. Because of the extra power consumption of these devices, the cruising range of electric vehicles will plummet. Summary: The above points are the influence of new energy vehicles in low temperature environment, which makes many car owners feel headache and even talks about the color change in winter. Therefore, when using new energy electric vehicles in winter, we must consider the influence of low temperature attenuation on battery life and long charging time, and plan the vehicle cruising range reasonably. At present, the sales of new energy vehicles are increasing day by day, but there will be some obstacles due to the limitation of cruising range and the imperfection of charging pile equipment. Even if you buy new energy vehicles in some areas with perfect charging equipment, the cruising range in winter will drop sharply. What is the reason? What is the impact of low weather temperature on new energy vehicles? Tell me more specifically. First, it is inevitable that the cruising range will be shortened to a certain extent and the acceleration performance of the car will gradually decay. Due to the relatively low temperature in winter, when the temperature drops below 0, the chemical characteristics of the power battery will be weakened to some extent. Coupled with the cold, the active performance of the battery will be greatly reduced, the discharge power will also be weakened, and the acceleration performance will also be attenuated. Whether it is an electric car or a hybrid car, it is an inevitable phenomenon. The second effect of the short board is that the current and charging speed of charging time will be weakened because of the low temperature in winter. I believe that many car owners who buy new energy will find that the charging time of batteries will be greatly extended and the charging times will be more frequent in winter, which is caused by the low temperature. This is also normal. In general, the charging current can reach 60a in summer. Winter is basically maintained for about 30 years, so the current will drop by 40% to 50% in cold weather. These two aspects are the last thing car owners want to see. New energy vehicles are most afraid of winter, but technology is improving and improving this problem. I believe that in the near future, even in the northeast, it is a common practice to buy new energy. At present, the sales of new energy vehicles are increasing day by day, but there will be some obstacles due to the limitation of cruising range and the imperfection of charging pile equipment. Even if you buy new energy vehicles in some areas with perfect charging equipment, the cruising range in winter will drop sharply. What is the reason? What is the impact of low temperature on new energy vehicles? Tell me more specifically. The first point: the cruising range will be shortened to a certain extent, and the acceleration of the car will gradually decay, which is inevitable! Due to the influence of low temperature in winter, when the temperature drops below 0℃, the chemical characteristics of the power battery will be weakened to some extent. In addition, due to the cold, the active performance of the battery will be greatly reduced, the discharge power will also be weakened, and the acceleration will also be attenuated. This phenomenon is an inevitable natural phenomenon whether it is an electric car or a hybrid car. The second effect is that the current and charging speed of charging time will be weakened because of the low temperature in winter. I believe that many car owners who buy new energy will find that the battery charging time will be greatly extended and the charging times will be more frequent in winter, all because of the relatively low temperature. This is also normal. Generally, the charging current can reach 60a in summer, and it will basically remain around 30a in winter, so the current will drop by 40% to 50% when the weather is cold. These two aspects are the last thing car owners want to see. New energy vehicles are most afraid of winter, but technology is improving and improving this problem. I believe that in the near future, even in the northeast, it is a common practice to buy new energy. With the arrival of the winter solstice last week, the atmosphere in winter is getting stronger and stronger, which not only makes people feel the chill, but also has a more obvious impact on new energy vehicles. So for pure electric vehicles, what impact will it have after winter? First, the cruising range will be shortened. Both plug-in hybrid electric vehicles and pure electric vehicles will be affected. Due to the chemical characteristics of its power battery, when the temperature drops below 0 degrees Celsius, its pure electric cruising range will be weakened to varying degrees. The second is the attenuation of automobile acceleration performance. With the rapid decline of cruising range and the influence of severe cold, the performance of battery is greatly reduced, and the discharge power is also weakened, which makes the burden of electric vehicles with limited mobility heavier, which also leads to the decline of acceleration performance of electric vehicles in winter. Attenuation. Then, it is difficult to charge. Because the current and charging speed during charging will be affected by the low temperature in winter, the charging time will be longer. Finally, the air conditioner that makes people laugh and cry. The article "Suggestions for the Winter Use of Weilai ES8" published by Weilai mentioned that it is suggested that car owners turn on the air conditioner and seat heating function intermittently when the temperature is too low. Because the heater of electric vehicles must be driven by electricity, which is different from the way that fuel vehicles dissipate heat through engines, if the heater is turned on again in winter when the battery energy is extremely reduced, the already insufficient cruising range will only be further reduced. Therefore, winter may be the least favorite season for many pure electric vehicle owners. After all, no one wants to-a car that has just been fully charged will become 80% after starting, 60% after driving 20km, and 20% after heating. I want to go home and recharge my batteries before I reach my destination. But if winter comes, can spring be far behind? In this season, when will the spring of new energy vehicle technology come? We will wait and see. New energy vehicles also like to "wear long pants" as energy storage devices. The charge and discharge of battery is a chemical reaction process, and it is an inherent characteristic of any chemical reaction to be affected by temperature. The low temperature in winter will slow down the chemical reaction process, and the charge and discharge capacity of the battery will also be affected. Just as mobile phones, SLR and other electronic devices can't work normally in cold areas, the so-called "battery is not durable" will also appear on electric vehicles. "The temperature drop in winter is inevitable, but we can artificially increase the battery temperature and increase the battery capacity." Three "heat preservation" tricks: 1) First, after parking, when the battery temperature of the vehicle is high, immediately connect low-power equipment to charge the equipment, which can not only obviously improve the charging efficiency, but also balance the battery activity. 2) Secondly, if it is a cold car charging, Mr. Huo will take air conditioning preheating and other methods first, and then charge it after the battery temperature of the vehicle rises slightly. 3) New energy owners try to park their cars in sheltered garages, or put on "thick autumn trousers" for their cars to keep the batteries warm. Develop good driving habits and avoid unnecessary power consumption. Like fuel vehicles, violent driving behaviors such as frequent and rapid acceleration and deceleration will lead to incomplete discharge of electricity, which will further affect the cruising range of vehicles. 1) When driving at ordinary times, try to use ECO (economic) mode to drive at a constant speed, and then start slowly to avoid sudden acceleration, sudden braking and sharp turns. Moreover, BYD Tang also has a braking energy recovery system, which can convert the energy consumption during deceleration and braking into usable electric energy and relatively supplement the cruising range. 2) When driving in winter, new energy vehicles can't start as violently as fuel vehicles. Preheating operation can be carried out first, and then driving slowly and uniformly for 3-5 minutes after starting, which can ensure the battery to discharge more completely in cold environment and protect the battery at the same time. Power consumption of equipment is inevitable, but the owner can still skillfully "throttle". With the development of technology, various facilities in the car are more and more complete, which not only brings people a richer car experience, but also increases the energy consumption of the car, especially at low temperature, air conditioning and heating will obviously increase the power consumption. 1) During daily driving, turn off unnecessary vehicle electrical equipment, such as radios and lights, as far as possible to reduce power consumption. 2) In the case of short mileage, choose to use the seat heating function of Tang model to replace the warm air conditioner, accurately raise the body temperature, avoid the embarrassment of "the car is not hot when it arrives", and save electricity and run a few kilometers. Pure electric vehicles are driven by battery packs and motors, and there is really no need to change oil and filters. However, its chassis, tires and electrical parts are basically the same as those of fuel vehicles, and they also need regular maintenance, such as replacing gearbox oil and air conditioning filter every year or 20,000 kilometers, replacing antifreeze and brake oil every two years or 40,000 kilometers, and checking the conventional parts such as chassis, lights and tires every maintenance. As we all know, the power of new energy vehicles is provided by the battery on the vehicle. Because of the low temperature in winter, this will reduce the activity of electrode materials for power batteries of new energy vehicles. Therefore, the storage capacity of the battery will also be reduced, resulting in a shortened battery life. Actually, you don't have to worry. The poor activity of battery electrode materials is only a temporary "behavior" in low temperature environment; As soon as the cold weather passes, the battery life of new energy vehicles will return to normal. 2. Other factors affecting the endurance of new energy vehicles (1) The vehicle load is too large, or when the air conditioner is turned on for a long time, it will consume more energy, consume too much electricity and shorten the endurance. (2) Bad driving habits Most car owners know that congested road conditions will increase car fuel consumption. For new energy vehicles, braking and starting are too frequent when encountering traffic jams, which will make the motor current rise frequently, increase the power consumption and shorten the battery life. However, some people have poor driving habits, and they always like to find some "stimuli" when driving: sudden acceleration at the beginning and sudden braking when slowing down will cause excessive instantaneous current, which will not only consume more electricity, but also affect the service life of the motor. (3) Insufficient tire pressure For traditional cars, too low tire pressure will have a certain impact on driving safety and increase fuel consumption; The same is true for new energy vehicles. If the tire pressure is insufficient, more electricity is needed to overcome the driving resistance. If the power consumption increases during driving, the cruising range will be shortened. (4) Do not preheat before driving, and then suddenly accelerate. The owners of traditional fuel vehicles have heard that they should preheat before driving in winter; In fact, the same is true for new energy vehicles. It is best to drive slowly at a constant speed for a few minutes before departure. Because the cooling liquid needs a heating process to ensure the normal operation of the battery. If you don't preheat before driving, you will accelerate quickly, which will consume a lot of electricity and greatly reduce the battery life. The above is the sharing of the car language world today. I believe everyone has a certain understanding of the "shrinkage" of new energy vehicles in winter. Finally, Cheyu World would like to remind everyone that many car owners may park their cars in underground garages and other places that they think are "safe" because of long-term business trips or going abroad, thinking that everything will be fine; Actually, it is not. If the energy-saving vehicle is idle for a long time, it will cause power loss, which will further affect the battery capacity and service life. So remember to check the power regularly and charge your new energy vehicle in time. With the coming of winter, the temperature drops gradually, which also tests the performance of new energy vehicle batteries. What problems should be paid attention to when charging, driving and using air conditioning in winter for new energy vehicles in order to maximize the cruising range and service life of batteries? What problems should be paid attention to when sorting out new energy vehicles in winter? Q: What should I pay attention to when driving safely in winter? Give three examples. Answer: First, in cold weather, the tire pressure can be reduced 1.8~ 1.9, and the adhesion area between the tire and the ground can be increased; Second, don't accelerate too fast when the vehicle is driving on the ice and snow road, don't step on the brakes when cornering, and slow down before entering the corner; Third, replace snow tires to increase their grip. Q: Do you fill it out for daily use or while using it? Why? Answer: It is best to use batteries that can be charged on demand, mainly slow charging, and only use fast charging occasionally in an emergency. Long-term use of fast charge will cause loss to the battery, especially when the charge exceeds 80%. It is not recommended to fully charge and discharge the battery. When the battery is charged from 100% to 0%, it is counted once, but it is not counted when it is repeatedly charged and discharged from 10%-90%, which can reduce the number of battery cycles. Q: Is there any good way to defog the glass? Give three examples. Answer: First, turn on the cold wind and blow forward to block the wind; 2. Paint the inner wall of the front windshield with detergent diluted water; Third, use professional defogging spray to defog the inner wall of the front windshield. Q: Is it better to use electric cars than oil tankers in winter? A: Trams have no maintenance requirements such as refueling tankers; The electric car saves the hot car link; Trams are heavier and more stable than oil tankers. Q: What should I pay attention to when traveling 50 kilometers? A: Plan the trip in advance and do a good job in finding information about electric piles. If you drive in winter, try not to use air conditioning for heating, but use external heating equipment. Try to keep driving at a constant speed. Q: Which component does the antifreeze for electric vehicles act on? Answer: antifreeze for electric vehicles is used to protect batteries, and some high-power motors also need antifreeze for cooling protection. Q: Can I recharge in rainy and snowy weather? Why? A: Yes. The splash of rain and snow weather has no effect on the use of charging gun and interface, but it can't be soaked. Of course, the daily rain and snow weather is basically impossible to cause the charging part to be soaked in water. Q: What will happen to the battery when the air conditioner is turned on in winter? Answer: It will obviously attenuate the battery. Long-distance travel in winter should plan the driving route in advance to avoid battery attenuation caused by turning on the air conditioner and not reaching the destination. What problems should Chang 'an Yidong EV electric vehicle pay attention to? The engineer gave the following answer: Q:? What is the wading depth of Chang 'an Yidong EV? What wading items should I pay attention to in daily use? Answer: With the wading depth of half a tire as the upper limit, the battery IP67 is waterproof and can be immersed in 1 m deep water for 30 minutes. Daily driving needs to pay attention to wading depth and soaking time. In addition, the skylight should be closed in time to prevent rainwater from leaking in. Q: What kind of batteries did Changan Yidong use? What are the characteristics and advantages of this battery? Answer: ternary lithium battery has a high energy density, about 160~200wh/kg. It can store more electricity per unit volume and has a wide temperature tolerance range. At the same time, its safety is guaranteed, it works more stably at low temperature, and it can be charged with a small current below 0 degrees. Q: How long is the fast and slow charging time of Changan Yidong EV, and how many times is it charged and discharged? How long does the basic conversion take? A: Fast charging can reach 80% in 30 minutes, slow charging can reach 100% in 8 hours, and the charging and discharging times are more than 2,000 times. Calculated by one day 1 time, it can be used for about 6 years. The official warranty of Changan Yidong EV battery is 5 years, 65438+ 10,000 kilometers. Q: How many charging methods does Changan Yidong EV have? What are they? What is the corresponding charging scene? Answer: fast charging, slow charging and household charging. The corresponding scenes are the fast charging of DC fast charging pile, the daily use of AC slow charging pile, the travel and emergency of household charging. Q: What is the safety guarantee of the battery when Changan Yidong EV collides side and front? A: Structurally, there is a vacant design around the battery box, which gives the space to shrink when it hits. The battery position design avoids the sensitive parts of the trunk and front cover, and the side beam is reinforced. Electronics: Through the collision sensor, when the vehicle is hit, the battery system is powered off. Electrical aspects: by detecting high voltage, the power supply will be cut off after finding abnormality. Q: What is the benchmark power consumption of Changan Yidong EV for 100 kilometers? How to reduce this parameter? A: About 16 degrees. When driving, predict the driving state of the preceding vehicle, don't brake suddenly or suddenly, and keep the state of neither energy recovery nor excessive current release when controlling the switch, try to follow the preceding vehicle as much as possible, and reduce the wind resistance by using the wake. In addition, it can reduce the time to turn on the air conditioner and use the heating pad for heating, thus saving energy. @20 19