Industry News
Introduction of lithium battery life
2020-09-12
"The more a lithium battery is discharged, the greater the loss of the battery," said Tom Hartley, a professor of electrical engineering at the University of Akron, who helps NASA with research on extending battery life. "The more full you charge the battery, the greater the loss of the battery. The best lithium battery is in the middle of the state of charge, which is the longest battery life
The power consumption of the Hubble Space Telescope battery is set at 10% of the total capacity, and the number of battery charge and discharge cycles can reach 100000 times
First of all, too high and too low state of charge has the most adverse effect on the life of lithium battery, while the number of charge and discharge cycles is secondary. In fact, the number of rechargeable times marked on most appliances or batteries is based on 80% discharge. Experiments show that for some notebook computers, the battery voltage often exceeds the standard voltage by 0.1 V, that is, from 4.1 V to 4.2 V, then the battery life will be halved, and then increased by 0.1 V, the life will be reduced to one-third of the original; long-term low power or no power state will make the internal resistance of the battery to electronic movement more and more large, resulting in smaller battery capacity. NASA has set its Hubble Space Telescope battery consumption at 10 percent of its total capacity to ensure that the battery can be recharged and discharged 100000 times without having to be renewed.
Secondly, temperature also has a great influence on the life of lithium batteries (which can be ignored by mobile phones and other small electronic devices). An environment below freezing point may burn lithium batteries when electronic products are turned on, while overheated environments can reduce the capacity of batteries. Therefore, if the external power supply is not removed for a long time, the battery will be in the high heat discharged from the notebook for a long time. What's more, the battery will be in the state of 100% power for a long time, and it will be scrapped soon (including the battery of my own laptop is finished in this way).
From the above, we can summarize the following points for attention to ensure the capacity and life of lithium batteries:
No need to charge the lithium battery to 100% full, let alone run out of power. If the situation permits, try to keep the battery power near half full state, and the smaller the range of charging and discharging, the better;
GM's Chevy Volt Electric vehicle is designed to maintain a battery capacity of 20% to 80%. Apple's built-in battery may also use this method (including some other notebooks and electronic products) to increase the number of charge and discharge cycles of the battery.
Do not use lithium batteries (especially notebook lithium batteries) for a long time when the equipment uses external power supply. Even if your laptop heats up well, 100% of the power in the long run is the murder of lithium batteries.
1. If you use the external power supply for the laptop for a long time, or the battery power has exceeded 80%, take off the battery of your notebook immediately and charge it to about 80% without fully charging the battery; adjust the power option of the operating system to set the power alarm to above 20%, and charge the battery before it drops to 20%;
2. For small electronic devices such as mobile phones, the power cord (including USB interface of charging function) should be disconnected immediately after charging, which will damage the battery all the time;
3. No matter for laptop or mobile phone, do not let the battery run out;
4. If you want to travel, fully charge the battery, but please remember to charge the appliance at any time when conditions permit. For battery life, do not wait for the battery to dry;
Nowadays, people have a lot of electronic equipment, and a large part of them use lithium batteries. It is very practical to ensure the battery life. After all, the batteries have to be recycled, otherwise it will cause serious pollution to the environment
The power consumption of the Hubble Space Telescope battery is set at 10% of the total capacity, and the number of battery charge and discharge cycles can reach 100000 times
First of all, too high and too low state of charge has the most adverse effect on the life of lithium battery, while the number of charge and discharge cycles is secondary. In fact, the number of rechargeable times marked on most appliances or batteries is based on 80% discharge. Experiments show that for some notebook computers, the battery voltage often exceeds the standard voltage by 0.1 V, that is, from 4.1 V to 4.2 V, then the battery life will be halved, and then increased by 0.1 V, the life will be reduced to one-third of the original; long-term low power or no power state will make the internal resistance of the battery to electronic movement more and more large, resulting in smaller battery capacity. NASA has set its Hubble Space Telescope battery consumption at 10 percent of its total capacity to ensure that the battery can be recharged and discharged 100000 times without having to be renewed.
Secondly, temperature also has a great influence on the life of lithium batteries (which can be ignored by mobile phones and other small electronic devices). An environment below freezing point may burn lithium batteries when electronic products are turned on, while overheated environments can reduce the capacity of batteries. Therefore, if the external power supply is not removed for a long time, the battery will be in the high heat discharged from the notebook for a long time. What's more, the battery will be in the state of 100% power for a long time, and it will be scrapped soon (including the battery of my own laptop is finished in this way).
From the above, we can summarize the following points for attention to ensure the capacity and life of lithium batteries:
No need to charge the lithium battery to 100% full, let alone run out of power. If the situation permits, try to keep the battery power near half full state, and the smaller the range of charging and discharging, the better;
GM's Chevy Volt Electric vehicle is designed to maintain a battery capacity of 20% to 80%. Apple's built-in battery may also use this method (including some other notebooks and electronic products) to increase the number of charge and discharge cycles of the battery.
Do not use lithium batteries (especially notebook lithium batteries) for a long time when the equipment uses external power supply. Even if your laptop heats up well, 100% of the power in the long run is the murder of lithium batteries.
1. If you use the external power supply for the laptop for a long time, or the battery power has exceeded 80%, take off the battery of your notebook immediately and charge it to about 80% without fully charging the battery; adjust the power option of the operating system to set the power alarm to above 20%, and charge the battery before it drops to 20%;
2. For small electronic devices such as mobile phones, the power cord (including USB interface of charging function) should be disconnected immediately after charging, which will damage the battery all the time;
3. No matter for laptop or mobile phone, do not let the battery run out;
4. If you want to travel, fully charge the battery, but please remember to charge the appliance at any time when conditions permit. For battery life, do not wait for the battery to dry;
Nowadays, people have a lot of electronic equipment, and a large part of them use lithium batteries. It is very practical to ensure the battery life. After all, the batteries have to be recycled, otherwise it will cause serious pollution to the environment