Prevention and Improvement Measures for Excessive Gas Generation from Lithium Battery
（一）Optimising charging strategies
1.Avoid overcharging with a smart charger that monitors battery status to prevent overcharging. The smart charger can automatically adjust the charging current and voltage according to the battery's voltage, current and temperature parameters to ensure that the battery is charged within the safe range.
2.Implement trickle charging to reduce the charge current as the battery nears full. Trickle charging reduces the decomposition of the electrolyte and reduces the risk of gas production.
（二）Prevention of over-release
Set the minimum battery discharge voltage threshold to avoid over-discharging the battery. In the battery management system, an over-discharge protection function can be set to automatically cut off the circuit when the battery voltage is lower than the set threshold to prevent the battery from continuing to discharge.
（三）temperature control
1.Heat dissipation measures, such as the use of heat sinks, fans, etc., should be considered during the design and use of the battery. Heat dissipation measures can effectively reduce the temperature of the battery and reduce the decomposition of the electrolyte and gas generation.
2.Avoid using and storing the battery in a high temperature environment. High temperature environment will accelerate the aging and gas production of the battery, so the battery should be avoided to be used and stored in high temperature environment.
（四）Optimisation of battery management systems
1.An advanced Battery Management System (BMS) is used to monitor the battery status and adjust the working conditions in time. the BMS monitors the battery's parameters such as voltage, current, temperature and internal resistance in real time, and adjusts the battery's charging and discharging strategy according to these parameters to ensure that the battery operates within a safe range.
2.The BMS should have overcharge, overdischarge and overheat protection. When the battery is overcharged, overdischarged or overheated, the BMS can cut off the circuit in time to protect the safety of the battery.
（五）Improvement of manufacturing quality
Enhance quality control during battery production to reduce impurities and defects. In the battery manufacturing process, the quality of raw materials should be strictly controlled and advanced production processes and equipment should be used to ensure the quality and reliability of the battery.
（六）Regular maintenance and inspection
1.Regularly check battery status, such as pressure, temperature and other indicators. Through regular inspection, abnormalities in the battery can be detected in time and appropriate measures can be taken to deal with them.
2.Batteries with abnormalities should be maintained or replaced in a timely manner. If the battery is found to have abnormalities such as excessive gas production, decreased capacity, increased internal resistance, etc., it should be maintained or replaced in a timely manner to ensure the safety and performance of the battery.
（七）Use of high-quality materials
Select electrolyte and electrode materials with good electrochemical stability. High-quality electrolyte and electrode materials can improve the performance and safety of the battery and reduce the risk of gas production.
（八）safety design
Pressure relief devices such as safety valves should be considered when designing batteries to prevent excessive internal pressure. The safety valve can open automatically when the internal pressure of the battery is too high, releasing the internal pressure and protecting the safety of the battery.