Since batteries have internal resistance, the internal resistance increases when the temperature is low. Lithium batteries experience performance degradation in low temperature environments. This is determined by the characteristics of the lithium battery material itself and cannot be changed. If high current discharge is carried out at this time, the decomposition process of the lithium battery will be accelerated. .
Reversible capacity loss: This mainly refers to the phenomenon that capacity can be restored after recharging; the cause of the reversible capacity loss is the reversible discharge reaction. The principle is the same as normal. battery discharge reaction, but it's different. The fact is that the normal path of discharge electrons is an external circuit and the reaction speed is very fast. The electron paths self-discharge is a self-discharge caused by the electrolyte and the reaction rate. Is very slow.
Presentation
It is normal for the battery to wear out after use. The extent of battery loss is directly related to how often the battery is used. When connected to an external power source, the laptop battery will be charged first and will automatically become inactive once fully charged. Therefore, when it is possible to use an external power supply, try to use an external power supply, which can reduce battery loss.
Does charging cell phones in cold weather impact cell phones?
As the temperature drops in winter , whether lead-acid batteries or lithium batteries, the battery life will deteriorate and the power will be affected to a certain extent, the service lifeie the battery will be reduced and the power will obviously be insufficient.
Regarding lead-acid batteries: When the battery capacity is based on 25°C, the battery capacity will decrease by 1% for every degree the ambient temperature drops. When the temperature is below 5 degrees, battery life is reduced even further. Lithium batteries are also sensitive to low temperatures. When the temperature becomes low, the active materials in the battery are not broken down sufficiently, resulting in insufficient power and reduced lifespan.
But if we pay a little attention to it on a daily basis, the battery life of electric vehicles can still be improved to a certain extent in winter.
1. In winter, electric vehicles can usually only be charged to 70% before the light turns on. At that time, they can be properly charged pfor 1 to 2 hours, the charging time in winter. is recommended to be 8-10 hours, which can increase the storage capacity of the electric vehicle battery.
2. When riding in cold weather, pay more attention to the battery capacity. Need to charge in time, don't wait until the battery is completely exhausted before charging.
3. Charge it an hour after the ride. Because the temperature of an electric vehicle's battery will continue to rise while driving, the battery of an electric vehicle that has just been driven will be relatively hot. Immediate charging at this time will result in loss of internal battery materials. You can wait about an hour before starting charging to give the battery time to cool down.
Based on the quality of the battery products, after-sales service and price, we recommend several brands of relatively cheap lead-acid batteries.ent good: Tianneng battery, Changxin battery, Shinhwa battery, Man Tingfang battery.
My laptop won't turn on when it's cold in winter, what should I do?
The charging speed will be slower and fully charged in the future, the battery will not be durable at all. Indeed, the current cell phone battery is a lithium battery. The suitable working temperature of lithium battery is 15-40 degrees, so if the ambient temperature is too low, lithium. The battery will automatically reduce the operating voltage, so the charging speed of the same charger is much slower in low temperature environments.
When the temperature is low, the power of the lithium battery is not fully released, so the battery is not durable in low temperature environments. In some cases, when the temperature is verylow, self-protection can even. happen when the temperature is very low, so sometimes when the temperature is low, the phone turns off automatically.
Detailed information:
Facing the current "mobile phones automatically turn off in low temperature environments", this is because "in low temperature environments, the chemical reaction The speed of the battery slows down, the discharge current becomes smaller, and the battery integrated. When the temperature protection circuit in the protection board is activated, the phone will automatically turn off.
Scientists have recently developed new technology of "cold-resistant hard carbon anode" and "lithium-rich cathode". It is understood that for the beatsteries using this "cold-resistant hard carbon anode" and "lithium-rich cathode" technology, in the first charging process, lithium ions flow from the cathode to the anode and some lithium ions will be lost, but The lithium ions will be integrated and stored using a lithium ion reduced vanadium phosphate cathode with a pre-lithiated hard carbon anode.
The battery retains the high energy density, high power capacity and cycle life of conventional lithium-ion batteries.
Thanks to the natural characteristics of the vanadium phosphate cathode and the rapid reaction kinetics of the pre-lithiated hard carbon anode, even at minus 40°C, it is equipped with a " cold-resistant hard carbon anode". and “lithium-rich cathode” technologies. Battery power can also be maintained at 2/3, while the energy retention capacity of lithium batteries is convenientional is only 10%.
Tianji.com - Thanks to it, you no longer have to worry that your iPhone will run out of battery or even turn off automatically when it's too cold in winter
< p>The laptop does not turn on when it is cold in winter, this is caused by the low temperature which affects the performance of lithium batteries. The chemical properties of lithium batteries themselves are affected in low temperature environments. Without significant innovation in battery technology at this point, this problem cannot be solved at this time.
The positive and negative poles of the laptop lithium battery are electrolytes. During use, the negative electrode generates electrons and reaches the positive electrode through the electrolyte, thereby forming an electric current. a chemical reaction process. One of the factors that affect the rate of chemical reaction is thetemperature.
When the ambient temperature is too low, the resistance of the electrolyte increases, the chemical reaction rate decreases, and the current generated is also relatively reduced. Therefore, the reason for the increase in battery power consumption in low temperature environments is actually the reduction in current generated by the battery, resulting in a reduction in available power. Therefore, when the temperature is low, the current is reduced and the available power is reduced. the phone cannot be turned on normally.
Detailed informationTips to protect laptops in winter:
1. Avoid outdoor use: in winter.The main reason for the difference between using a laptop at home and using a laptop at room temperature is that the temperature is relatively low in winter. The battery is the plus affected by low temperatures. Most laptop batteries are used in temperatures between 0 and 60 degrees Celsius, which is why we try to use them indoors in winter.
2. Avoid condensation: When the laptop is used or exposed outdoors, the temperature of the computer itself will decrease. When the laptop is placed back in a room with suitable temperature (especially in a northern heated place), condensation water will be generated on the internal wall of the fuselage. If you turn it on immediately at this time, it may cause condensation. an internal short circuit. You should leave it for an hour or two to wait for the water vapor to evaporate before turning it back on.
People's Daily Online - Mobile phones automatically turn off when frozen, lithium battery products tested in extreme cold.
The QuPeople's Daily Online - There is a big temperature difference between indoors and outdoors. to protect laptops in winter