What kills a lithium battery?
2024-05-28
Damage to lithium batteries can be caused by a variety of reasons, here are some common ones:
1. Overcharging
Overcharging refers to charging a lithium battery to a voltage higher than its rated voltage (usually 4.2V or 4.3V). This will cause the chemical reaction inside the battery to proceed excessively, generating a large amount of heat and gas, which may cause the battery to expand and leak. Even explode.
Overcharging refers to charging a lithium battery to a voltage higher than its rated voltage (usually 4.2V or 4.3V). This will cause the chemical reaction inside the battery to proceed excessively, generating a large amount of heat and gas, which may cause the battery to expand and leak. Even explode.
2. Over-discharge
Over-discharge refers to discharging the voltage of a lithium battery below its minimum safe voltage (usually 2.5V). This will cause the electrode material inside the battery to be damaged, reduce the battery's capacity and life, and in severe cases may even cause the battery to no longer be able to operate anymore. Charge.
Over-discharge refers to discharging the voltage of a lithium battery below its minimum safe voltage (usually 2.5V). This will cause the electrode material inside the battery to be damaged, reduce the battery's capacity and life, and in severe cases may even cause the battery to no longer be able to operate anymore. Charge.
3. Overcurrent
Charging or discharging with excessive current will cause internal heating of the battery and damage the chemical structure of the battery. Overcurrent can be a momentary short-circuit current or a long-term high-current load.
Charging or discharging with excessive current will cause internal heating of the battery and damage the chemical structure of the battery. Overcurrent can be a momentary short-circuit current or a long-term high-current load.
4. High temperature
When lithium batteries are used or stored in high-temperature environments (such as over 60°C), the decomposition of the electrolyte will be accelerated, causing the chemical reaction inside the battery to be out of control, resulting in reduced battery performance or even failure.
When lithium batteries are used or stored in high-temperature environments (such as over 60°C), the decomposition of the electrolyte will be accelerated, causing the chemical reaction inside the battery to be out of control, resulting in reduced battery performance or even failure.
5. Low temperature
Using lithium batteries in low-temperature environments (such as below 0°C) will cause the viscosity of the electrolyte inside the battery to increase, the electrochemical reaction rate to slow down, the capacity and discharge capacity of the battery to decrease, and it may even cause internal lithium metal deposition and damage. Battery.
Using lithium batteries in low-temperature environments (such as below 0°C) will cause the viscosity of the electrolyte inside the battery to increase, the electrochemical reaction rate to slow down, the capacity and discharge capacity of the battery to decrease, and it may even cause internal lithium metal deposition and damage. Battery.
6. Physical damage
Lithium batteries are subject to physical damage such as external impact, extrusion, and puncture, which may cause internal short circuits and leaks. In severe cases, they may cause combustion or explosion.
Lithium batteries are subject to physical damage such as external impact, extrusion, and puncture, which may cause internal short circuits and leaks. In severe cases, they may cause combustion or explosion.
7. Battery aging
During long-term use, lithium batteries will gradually experience capacity fading and internal resistance increase. The main reasons include deterioration of electrode materials, decomposition of electrolyte and increase in impedance at the electrode interface.
During long-term use, lithium batteries will gradually experience capacity fading and internal resistance increase. The main reasons include deterioration of electrode materials, decomposition of electrolyte and increase in impedance at the electrode interface.
8. Improper charging
Using inferior chargers or chargers with unstable charging voltage and current will cause damage to lithium batteries. In addition, frequent charge and discharge cycles will also accelerate battery aging.
Using inferior chargers or chargers with unstable charging voltage and current will cause damage to lithium batteries. In addition, frequent charge and discharge cycles will also accelerate battery aging.
9. Manufacturing defects
Possible defects in the battery manufacturing process, such as low material purity, uneven electrode coating, poor packaging, etc., will affect the performance and life of the battery.
Possible defects in the battery manufacturing process, such as low material purity, uneven electrode coating, poor packaging, etc., will affect the performance and life of the battery.
10. Battery self-discharge
Lithium batteries will have a certain self-discharge rate during long-term storage. If not used for a long time, the voltage is too low, which may cause over-discharge damage to the battery.
Lithium batteries will have a certain self-discharge rate during long-term storage. If not used for a long time, the voltage is too low, which may cause over-discharge damage to the battery.
Advice on preventing damage to lithium batteries
1. Correct charging: Use original or qualified chargers to avoid overcharging and over-discharging.
2. Proper storage: Store batteries in a suitable temperature environment, avoiding high and low temperatures.
3. Prevent physical damage: Avoid impact, crushing and puncture of the battery.
4. Regular inspection: Regularly check the status of the battery, such as voltage and internal resistance, to detect potential problems in time.
5. Reasonable use: Use according to the battery's design specifications and avoid long-term high-current discharge and high-power use.
By taking these precautions, you can effectively extend the service life of lithium batteries and reduce the risk of damage.
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