How to improve the safety of LiSOCL2 battery
How to improve the safety of LiSOCL2 battery
After years of analysis and testing on LiSOCL2 battery safety issues, the SER technical team believes that the safety of lithium batteries can be improved from the following three aspects: one is to improve the thermal stability of electrode materials and actively improve the performance of the battery itself; the other is to improve the safety of the electrolyte of LiSOCL2 battery, use safe electrolyte; the third is to optimize the design and management of LiSOCL2 battery through external means, such as adding PCM, PTC, etc., to monitor the charging and discharging process of lithium battery in real time and timely detect abnormal problems Handling, to ensure the safe use of lithium batteries,to avoid leaks and explosions.
1. Improve the thermal stability of electrode materials
Generally speaking, the thermal stability of battery materials is the root of the safety of Lithium thionyl chloride battery. Therefore, in order to fundamentally improve the safety of ER battery, LiMNO2 battery, it is also necessary to start from the thermal stability of the battery material itself.
Studies have shown that under high temperature conditions, the reaction between the cathode material and the electrolyte is one of the main causes of battery safety problems. Therefore, finding cathode materials with better thermal stability is an effective means to improve the safety of lithium batteries. It is important to find a cathode material with good thermal stability, but it cannot be ignored by modifying the cathode material to improve its thermal stability. Regarding the thermal stability of the negative electrode material, in addition to the thermal stability of the material itself, the thermal stability of the SEI film at the interface between the negative electrode and the electrolyte is more important. For detailed technical issues, please refer to the link:
2. Use safe LiSOCL2 battery electrolyte.
The electrolyte plays the role of transporting lithium ions (Li+) between the positive and negative electrodes of the Li-SOCL2 battery. The electrolyte participates in almost all the reactions that take place inside the battery, including not only the reaction between the electrolyte and the negative electrode material and the positive electrode material, but also the decomposition reaction of the electrolyte itself. It can be seen that the thermal stability of the electrolyte plays a crucial role in the safety of Li-SOCL2 Battery. Therefore, safe electrolyte systems have attracted attention and become a hot spot in the research and development of LiSOCL2 Battery electrolytes.
3. By adding a PCM, the design and management of LiSOCL2 Battery are optimized, etc.
The LiSOCL2 battery protection board is discharge protection for the series-parallel safety of LiSOCL2 battery pack; when fully charged, it can ensure that the voltage difference between the individual cells is less than the set value (generally ±20mV), and realizes the equalization of each single cell in the battery pack. It can effectively improve the charging effect in the series charging mode; at the same time, detect the overvoltage, undervoltage, overcurrent, short circuit and overtemperature status of each single cell in the battery pack to protect and prolong the battery life to make sure the safety of LiSOCL2 battery; undervoltage protection makes Each single cell is used to avoid damage to the battery due to over-discharge when it is discharged. In practical applications, PTC often appears as a thermistor, and the ultra thin battery protection board is through the large resistance value of the device material, so as to become a circuit breaker in disguised form, cutting off the current to achieve the function of protection, such an explanation, everyone It is easy to think that PTC is a very important component in the LiSOCL2 battery protection board, and the main protection function is also realized through it.
