March 14, 2024
Impact and analysis of temperature on lithium battery life
Lithium-ion batteries are widely used in portable electronic devices and electric vehicles due to their high energy density and good cycling performance. However, temperature, as one of the important factors affecting the life and performance of lithium batteries, has a complex mechanism of action that directly influences the charging and discharging efficiency, cycling life, and safety of the lithium battery. This article will discuss the impact of temperature on lithium battery life and countermeasures from the perspective of high and low temperature effects.
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Impact of temperature on lithium battery life
High temperature effects
- Increased internal battery temperature and capacity loss
In high-temperature environments, the internal chemical reactions of lithium batteries accelerate, leading to accelerated capacity loss. When temperatures exceed 40 degrees Celsius, the speed of chemical reactions in the lithium battery significantly increases, which may cause the electrolyte components to decompose. The internal resistance of the lithium battery increases, exacerbating electrode polarization, which leads to reduced capacity and, under certain conditions, irreversible damage.
- Risk of combustion and explosion
In high-temperature environments, the chemical substances in lithium batteries become more active, leading to gas expansion and the production of flammable gases, thereby increasing the risk of fire or explosion. For example, using electric vehicles in hot weather can cause battery temperatures to rise excessively, which not only degrades heat-resistant materials but also significantly reduces battery performance, potentially leading to fires in extreme cases. Moreover, some lithium batteries may suffer from membrane damage, causing internal short circuits when operating continuously at high temperatures.
- Side reactions and material degradation
When temperatures exceed 45 degrees Celsius, the chemical equilibrium within the lithium battery is severely disrupted, resulting in side reactions. These side reactions not only affect the battery’s discharge performance but also degrade the active materials inside the battery, significantly shortening the cycling life. Prolonged use at high temperatures may prevent the battery from achieving its anticipated performance within its designed lifespan.
Low temperature effects
Reduced battery activity and weakened discharge capacity
In low-temperature environments, the activity of lithium ions decreases, weakening the battery’s discharge capacity and leading to significantly reduced usage time. When the battery temperature falls to zero degrees Celsius or lower, the speed of chemical reactions sharply decreases, and the discharge current of the battery at low temperatures also diminishes, resulting in reduced capacity. Additionally, in extremely cold environments, batteries may frequently experience automatic shutdowns.
- Short-term and long-term damage caused by low temperature
Short-term exposure to low temperatures may lead to decreased battery performance, but performance usually recovers to some extent after temperatures return to normal. However, prolonged exposure to low temperatures may cause irreversible damage. In low temperatures, the migration of lithium ions is restricted, and the reduced fluidity of the electrolyte can lead to decreased discharge performance and charging efficiency, as well as internal polarization of the battery.
- Lithium plating phenomenon at the anode
During charging in low temperatures, lithium ions can easily deposit on the surface of the anode (forming lithium dendrites), which may lead to short circuits and reduce overall battery safety. The deposited metallic lithium reacts with the electrolyte to produce deposits, further increasing the thickness of the solid-electrolyte interphase (SEI), thereby affecting charge and discharge performance.
Reasons for temperature impact on lithium battery life
From the perspective of chemical reactions
Temperature changes directly affect the speed of internal chemical reactions in batteries. At high temperatures, internal chemical reactions accelerate, which can improve short-term discharge capacity but, in the long run, leads to rapid consumption of active materials. Similarly, in low-temperature conditions, the reaction rate slows down, resulting in poor energy release efficiency.
From the perspective of usage habits
Users’ habits also affect lithium battery life. For instance, frequent fast charging and sustained deep discharging increase the burden on the battery. Moreover, neglecting maintenance, such as not periodically checking the battery’s status, can also accelerate battery deterioration.
Characteristics of the battery itself
Different types of lithium batteries have varying degrees of sensitivity to temperature. High-quality lithium batteries are often better designed and constructed to handle temperature changes. For example, ternary lithium batteries usually exhibit better thermal stability, while lithium iron phosphate batteries tend to show higher safety and longevity at elevated temperatures.
Strategies to avoid negative effects of temperature on lithium battery life
Avoid extreme temperatures
In high-temperature environments, avoid placing battery-operated devices in direct sunlight. The ideal operating temperature range is 16°C to 22°C, and environments exceeding 35°C may lead to decreased battery performance or even damage. In winter, try to avoid prolonged exposure in cold conditions.
Focus on charging environment
Choose an appropriately temperature-controlled environment for charging, and avoid outdoor charging and frequent use of fast-charging stations to prevent the battery from becoming damp or overheating. When charging, remove any poorly ventilated protective covers to ensure effective heat dissipation.
Adjust charging strategies reasonably
In winter, the charging time should be extended appropriately, as charging efficiency decreases in low temperatures. It is recommended to charge (explore the lithium battery full charge voltage) when the battery level is not below 25% to avoid excessive discharging that could lead to decreased battery performance.
Improve protection and maintenance measures
Regularly check the battery’s condition, including electrolyte levels and visual inspections, addressing any potential oxidation or leakage issues promptly. Users should learn proper usage and maintenance knowledge to extend lithium battery life.
Conclusion
Temperature has a profound impact on the lithium battery life and performance. Through reasonable usage habits, optimized charging environments, and regular maintenance, the lifespan of lithium batteries can be effectively extended. In the future, as battery technology continues to develop, improvements in battery materials and enhancements in battery management systems will also be continuously refined to better address the challenges temperature poses to lithium battery life.
FAQ
What is the best operating temperature for lithium batteries?
Generally, the optimal operating temperature for lithium batteries is between 20°C and 25°C.
Does high temperature really have such a significant impact on lithium batteries?
Yes, high temperatures accelerate battery aging and reduce capacity, potentially leading to safety hazards.
Can I use lithium batteries in low-temperature environments?
Yes, but you may find that the battery’s discharge capabilities and charging efficiency decrease.
How should I store lithium batteries to maintain their performance?
Store in a cool, dry place, avoiding direct sunlight and extreme temperatures.
Does regular charging affect the lithium battery life?
Regular charging is necessary, but avoid complete discharging or overcharging, as this can impact battery life.
Who we are
Tycorun, a prominent player in the battery-swapping industry, specializes in developing and manufacturing battery swap station and lithium-ion batteries. The company aims to offer sustainable energy solutions for electric vehicles.
Tycorun has made significant inroads into the Chinese market, primarily targeting urban regions where the need for electric two-wheelers is substantial. The company consistently allocates resources to research and development to improve its battery technology and broaden its network of swapping stations.
The battery swapping stations created by Tycorun are both user-friendly and efficient. Their lithium-ion batteries are renowned for their high energy density and long-lasting performance, suitable for different models of electric two-wheelers.
Additionally, Tycorun offers comprehensive software solutions for monitoring and managing our batteries.
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Willow
Willow is a materials engineer with a Master’s degree in Materials Science and Engineering, specializing in lithium-ion battery materials and energy storage technologies.
Her work focuses on EV battery swapping solutions, battery innovation, and new energy industry trends, aiming to translate research insights into practical applications for sustainable transportation.
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