Technical post! Why doesn't the electric car go far in cold weather?

When the weather is cold, the battery bulging phenomenon decreases, but the battery in autumn and winter is still not worrying, and new problems often appear, such as: running farther than before, charging more and more times, and occasionally bulging... …Batteries are sensitive to temperature, and are afraid of heat and cold. They are easy to catch a cold when they are cold. This is because lead-acid batteries have an optimal operating temperature-25°C. Above 25℃, it is easy to swell and spontaneously ignite; below 25℃, various activities in the lead-acid battery will decrease, the resistance will increase, the battery capacity will decrease, the charging effect will decrease, and the storage capacity will deteriorate. If you want an electric car to run smoothly in autumn and winter, you have to pay attention to battery maintenance. The battery maintenance method for autumn and winter can be summarized as 6 points. 1. Remember that the charger must match the battery model. The electric vehicle must be charged with a special vehicle charger. Do not use chargers of different specifications, otherwise, the rated voltage and current of the charger will not match the battery, and the battery will be charged. Many families now have two or more electric vehicles, and many electric vehicles are of different brands, different models, and battery models. Naturally, the chargers are also different and cannot be universal. The correct way is to use special-purpose chargers, but Some electric vehicle users often mix and use them during use, and the charging voltage and current do not match, which will cause the battery to be overcharged or undercharged. 2. When the ambient temperature drops, the battery should be charged frequently. It is best to charge the battery when the remaining power of the battery is between 30% and 50%, which can avoid the phenomenon of early capacity loss of the battery, and also avoid over-discharge; , It is recommended that the remaining power can be charged at 50%; if the battery is not used for a week and 60%-70% of the battery is not used in a week, it is recommended to charge once; if you go out or leave it for a long time, the battery will self-discharge. 'Run out3. Try to charge indoors. In winter, the outdoor temperature is too low. When charging electric vehicle batteries, you should try to charge indoors, because the best ambient temperature for battery charging is 25°C. Charging indoors is beneficial to enhance battery storage. Electric capacity. In addition, the outdoor temperature is cold in winter, and the battery is easy to freeze and frost. It is best to leave it for a while before charging the battery, and then charge it after the battery surface temperature rises to close to room temperature and is sufficiently dry. 4. Try not to use or use fast charging stations as much as possible. Long-term use of the fast charging station on the roadside will also charge the battery, because the working principle of the fast charging station is to charge the battery with a high current in a short time, which will cause serious gassing and water loss of the battery, and the battery will bulge. Many cities have a large number of fast charging stations. On the one hand, it is convenient for electric vehicle users. On the other hand, the high current charging of fast charging stations causes serious battery gas loss and water loss. Long-term use will lead to battery charging and other undesirable consequences. 5. Avoid overloading and overspeeding. When overloading and overspeeding, the battery is discharged with high current, which will cause damage to the battery plate and affect the battery life. 6. Configure the battery and do professional maintenance at regular intervals. Good batteries are used for a long time. Don't be greedy for cheap, you may buy refurbished batteries or low-quality batteries for cheap. The quality of the battery is not good and it is useless to maintain it. It is recommended to buy high-quality batteries, such as batteries. The battery quality is excellent, the service is good, and the sales, service, customer service, technical support, maintenance and other aspects are well established, which can provide consumers with better after-sales service. #wechat_content,#wechat_cover,#wechat_content *,#wechat_cover img{max-width:100%;} Previous post: The secret of battery saving! Take it!