The analysis of the effect of lithium battery at low temperature

Source: 2020 - 03 - 28 land hits: first lithium batteries in the effect of low temperature at this point, most regions of the country in a cold climate, many electronic products, including electronic products with battery, are affected by low temperature. The day is cold, many people found in the use of mobile phones outside the battery power consumption is very fast, sometimes crash, touch screen failure. Professionals to remind, low temperature has much effect on the cell phone battery, the cold weather to go out the use of mobile phones, can choose a few ways to improve the durability of the battery. Today's cell phone batteries are generally lithium-ion batteries, batteries of the chemical reaction rate will be affected by temperature. Mobile phone in the low temperature environment for a long time, can make the battery chemical reaction is slow, lead to the battery discharge current is very small, reduce the capacity of battery, may have the power to use soon, black screen, collapse, touch screen failure, unable to surf the Internet and other conditions. Temperature changes may also lead to cell phones inside condenses into fog, short circuit boards or other defects, because it is from a cold outdoor to move to a warm room. When it's cold outside, try to keep your phone enough power, reduce the power consumption such as games, movies and music applications. The best mobile phone in a pocket, backpack etc warmer place, dial, the phone can use headphones, try to avoid mobile phones directly exposed to the cold air. Don't use a mobile phone in a low temperature for a long time. From the outside into the room, place the phone for a period of time, waiting for the water vapor transpiration before use. Assume that phone temporary defects when used in low temperature environment, can be shutdown stop using, and then let the phone in a slightly higher temperature environment to adapt to the situation will improve. The working principle of lithium-ion battery is changing electrolyte by chemical reaction, generate an electrical potential difference between the positive and negative, and then trigger current. Under low temperature, the electrolyte normal and slow movement, has affected the lithium ion between the positive and negative transfer activity, resulting in a decline in the battery charge and discharge function. In short, under the low temperature, it isn't that lithium battery is power off, but lithium batteries have electricity, but no electricity. According to some analysis, a typical lithium ion battery at 0 degrees Celsius when losing 20% of capacity, in - May only lose half of 10 degrees Celsius. Most of the normal work of the cell phone battery range between 0 to 35 degrees Celsius, any below or above this temperature is abnormal. Adverse to the lithium battery at low temperature. If the increase in low power, the damage will be more serious. Therefore, in order to maintain the lithium battery, apple has added a 'self maintenance mechanism, automatically when faced with' low temperature + low battery shutdown, cannot be started. For this, let's take a look at the apple official statement, the iPhone is the running environment temperature 0 ℃ - 35℃。 When the room temperature drops to a certain temperature ( - Around 10 ℃) When apple will automatically power off.