1.Reasons for low voltage of lithium batteries
(I) Influence of external factors
① External short circuit and overcharge: Explore the phenomenon that the internal pressure and temperature of lithium batteries may increase when the external circuit is short-circuited or overcharged.
② High-rate and high-current charging: Analyze the electrolyte decomposition and negative electrode material damage that lithium batteries may face under high-current and fast charging conditions.
③ Internal short circuit and micro short circuit: Study the short circuit phenomenon caused by tiny particles inside lithium batteries and its impact on battery performance and life.
(II) Battery factors
① Self-discharge phenomenon: When lithium batteries are not in use, they will gradually lose power due to internal chemical reactions, affecting the long-term storage performance of the battery.
② Battery aging problem: As the number of cycles increases, the capacity of lithium batteries will gradually decrease, resulting in battery performance degradation and affecting the endurance of the device.
③ Increased internal resistance: The increase in internal resistance of aging batteries will aggravate energy loss, reduce battery efficiency, and cause low voltage problems.
2. Low voltage solution
(I) Diagnosis and evaluation
① Understand the battery usage in detail: In-depth analysis of the battery’s historical charge and discharge records, identify usage patterns that may affect the battery life.
② Choose a suitable charger: Evaluate the compatibility of existing chargers to ensure that their output parameters meet the battery requirements and avoid overcharging or undercharging.
③ Monitor battery health: Regularly check key indicators such as battery voltage and internal resistance to promptly detect potential low voltage risks.
(II) Recovery and repair
① Slow charging strategy: By gradually increasing the charging current, avoid internal short circuits in the battery and effectively improve battery performance.
② Professional equipment diagnosis: Use precision instruments to conduct comprehensive battery testing, locate the specific cause of the low voltage problem, and provide a basis for targeted repairs.
