Measuring method of mobile phone battery power consumption

A few days ago, some netizens measured the current popular power consumption of Xiaomi mobile phones. The calculation steps and results are summarized as follows: 1. Battery management equipment: Jinshan Battery Doctor; 2.2. Alternative battery charging DC power supply; 3. Simple capacity test equipment; 4. Xiaomi mobile phone with built-in lithium ion battery. Steps: 1. Take out the battery of the Xiaomi mobile phone and switch to the DC power supply to operate the mobile phone. 2. Turn it on and test the current of the phone. In the Jinshan Battery Doctor quick switching menu, turn on all functions to read the power consumption of the mobile phone under different conditions. Netizens' measurement results are as follows: The average current is about 0.58a (conditions: Sony E931 volume is 75%, maximum 0.8, minimum 0.33, mostly between 0.4-0.7a). The average call current is about 0.47a (conditions: 10086, 0.67 for high energy, 0.32 for low energy, mostly between 0.52 and 0.4a, no hands-free dialing, this value fluctuates greatly). The average game current is about 0.6a (no sound, the highest is 0.7, the lowest is 0.48, mostly between 0.5 and 0.6a). The average current for listening to music is about 0.17a (conditions: After turning off the screen, the volume of the Sony E931 headset is 75%, the maximum value is 0.23, the minimum value is 0.10, mostly between 0.12 and 0.2a). 3. Use a simple capacity test equipment to test the capacity of the lithium-ion battery, and the actual capacity of the lithium-ion battery of the Xiaomi mobile phone is 1814mAh (the nominal capacity is 1930mAh). According to the actual capacity, the actual power consumption time of the Xiaomi mobile phone in different situations can be obtained. Watch the video: 1814mAh/0.58au003d3.86 hours Phone: 1814mAh/0.47au003d3.02 hours Game time: 1814mAh/0.6au003d10.67 hours Listen to music: 1814mAh/0.17au003d3.12 hours From the test results, Xiaomi mobile phone lithium-ion battery It can be considered a large-capacity lithium-ion battery. 4. Standby time: the actual capacity/average current. During the test, all redundant running programs were closed, leaving only Kingsoft Battery Doctor to run to read the data. Using manganese-rich layering technology to increase the specific capacity of lithium-ion batteries chemists at the University of California (Berkeley) used a layered composite anode rich in manganese to increase the capacity of lithium-ion batteries of the same weight by two Times. This battery uses the traditional lithium manganese spinel anode technology, this material can arrange atoms in a three-dimensional space. In current lithium-ion batteries, there is an imbalance between the two electrodes: the negative structure can accept more charge to increase the specific capacity of the battery. 1. The manganese-rich layering technology includes two meanings: 1. Manganese-rich: refers to the high-capacity manganese-rich positive electrode. Tests have shown that the lithium-ion battery cathode material has two active ingredients and inert components, which pass the active ingredient of the cathode material , Lithium ion moves between the positive and negative electrodes to form charge and discharge; inert ingredients help stabilize the active material, thereby extending battery life. Cathode materials rich in manganese can exhibit more than one-third of the energy density. 2. Layering: This means that two different layered components are used in the preparation of the battery, so the positive electrode presents a layered composite structure. Therefore, it is necessary to improve the process selection, porosity and material composition of the coating. Through the layering technology, the ratio of the positive electrode material of the lithium ion battery is more reasonable, and the acceptable charge capacity of the positive electrode material is greatly improved. Enviasystems has developed this technology in cooperation with California chemists. The company has developed a battery with a specific capacity of 300Wh/kg. The company hopes to increase it to 400Wh/kg by improving the cathode material. When the negative charge of the battery is greater than the positive charge, the improvement of the battery capacity depends on the positive charge material. This is the reason for the existence of the manganese-rich layered technology. In theory, a real large-capacity lithium-ion battery can be produced. 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 is the principle of fast charging of lithium-ion battery chargers?