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Jun 04 2025As a core component of modern electronic devices and electric vehicles, the reliability of lithium batteries is directly related to user experience and safety, and mainly covers performance testing, safety testing, environmental adaptability testing and other aspects.
1. What is the reliability of lithium batteries?
The reliability of lithium batteries refers to their ability to continuously perform specified functions (such as stable power supply, no fire or explosion) under specified conditions (such as temperature, humidity, vibration) and within a specified time. This concept covers three key elements:
Environmental adaptability: performance stability under high temperature, low temperature or high humidity environments;
Cycle durability: the relationship between the number of charge and discharge cycles and capacity attenuation;
Safety threshold: failure protection capability under extreme conditions (such as vibration, overcharging).
Environmental adaptability: performance stability under high temperature, low temperature or high humidity environments;
Cycle durability: the relationship between the number of charge and discharge cycles and capacity attenuation;
Safety threshold: failure protection capability under extreme conditions (such as vibration, overcharging).
2. Lithium battery cycle test method
(1) Charge and discharge cycle test: verify life and capacity attenuation
By simulating the actual use scenario of lithium batteries, hundreds to thousands of charge and discharge cycles are performed to monitor capacity and internal resistance changes. Common failure forms include particle crushing, lithium dendrite growth and increased internal resistance. For example, lithium iron phosphate batteries outperform traditional lithium-ion batteries in cycle life tests due to their stable chemical properties.
(2) Storage test: evaluate the long-term impact of the environment on batteries
Put lithium batteries in a high temperature and high SOC environment to accelerate aging and test risks such as electrolyte decomposition and SEI film thickening. Low temperature environments focus on the capacity shrinkage caused by decreased ion conduction efficiency.
(3) High temperature and high humidity (HTHE) test: moisture resistance and sealing challenges
Simulate a humid environment to detect battery shell corrosion, leakage and electrolyte water absorption risks. This test is particularly important for lithium batteries used in outdoor equipment.
(4) Temperature cycle test: structural stability under extreme temperature differences
Cyclic switching between extreme temperatures of -40℃ to 85℃ to test problems such as electrode shedding and seal failure caused by expansion and contraction of internal materials of lithium batteries. Some companies will superimpose the charging and discharging process to strengthen the test intensity.
(5) Vibration test: reliability verification of transportation and use scenarios
By simulating the vibration frequency of transportation, the hidden dangers such as loose connection of the battery and deformation of the shell are detected to ensure the safe operation of lithium batteries in bumpy environments.
With the popularity of electric vehicles and energy storage systems, lithium battery testing has become the core of corporate technical barriers. Through rigorous testing, companies can not only meet international standards (such as UN38.3), but also optimize battery design and extend product life.
Welcome to contact us:
WhatsApp/Wechat/Mobile: +86 13332949210
Email: info@xihobattery.com
Website: www.xihopower.com
By simulating the actual use scenario of lithium batteries, hundreds to thousands of charge and discharge cycles are performed to monitor capacity and internal resistance changes. Common failure forms include particle crushing, lithium dendrite growth and increased internal resistance. For example, lithium iron phosphate batteries outperform traditional lithium-ion batteries in cycle life tests due to their stable chemical properties.
(2) Storage test: evaluate the long-term impact of the environment on batteries
Put lithium batteries in a high temperature and high SOC environment to accelerate aging and test risks such as electrolyte decomposition and SEI film thickening. Low temperature environments focus on the capacity shrinkage caused by decreased ion conduction efficiency.
(3) High temperature and high humidity (HTHE) test: moisture resistance and sealing challenges
Simulate a humid environment to detect battery shell corrosion, leakage and electrolyte water absorption risks. This test is particularly important for lithium batteries used in outdoor equipment.
(4) Temperature cycle test: structural stability under extreme temperature differences
Cyclic switching between extreme temperatures of -40℃ to 85℃ to test problems such as electrode shedding and seal failure caused by expansion and contraction of internal materials of lithium batteries. Some companies will superimpose the charging and discharging process to strengthen the test intensity.
(5) Vibration test: reliability verification of transportation and use scenarios
By simulating the vibration frequency of transportation, the hidden dangers such as loose connection of the battery and deformation of the shell are detected to ensure the safe operation of lithium batteries in bumpy environments.
With the popularity of electric vehicles and energy storage systems, lithium battery testing has become the core of corporate technical barriers. Through rigorous testing, companies can not only meet international standards (such as UN38.3), but also optimize battery design and extend product life.
Welcome to contact us:
WhatsApp/Wechat/Mobile: +86 13332949210
Email: info@xihobattery.com
Website: www.xihopower.com
