source:other news
release time:2023-08-26
Hits:0
Popular:

In order to avoid over discharge or overcharging of customized lithium-ion batteries caused by improper use, a triple protection mechanism is installed inside the single lithium-ion battery. One is the use of switching elements. When the temperature inside the battery rises, its resistance increases accordingly. When the temperature is too high, the power supply will automatically stop; The second is to choose appropriate partition materials. When the temperature rises to a certain value, the micron sized micropores on the partition will automatically dissolve, preventing lithium ions from passing through and stopping internal reactions in the battery; The third is to set a safety valve (which is the vent hole on the top of the battery). When the internal pressure of the battery rises to a certain value, the safety valve automatically opens to ensure the safety of the battery's use.
Sometimes, although the battery itself has safety control measures, due to certain reasons, the control fails, and there is a lack of safety valve or gas cannot be released through the safety valve in time, causing the internal pressure of the battery to rise sharply and cause an explosion.
In general, the total energy stored in lithium-ion batteries is inversely proportional to their safety. As the battery capacity increases, the battery volume also increases, leading to poor heat dissipation performance and a significant increase in the likelihood of accidents. For lithium-ion batteries used in mobile phones, the basic requirement is that the probability of safety accidents should be less than one in a million, which is also the minimum standard acceptable to the public. For large capacity lithium-ion batteries, especially those used in automobiles, it is particularly important to use forced cooling.
Choosing a safer electrode material and lithium manganese oxide material ensures a fully charged state in terms of molecular structure. The lithium ions in the positive electrode are fully embedded in the negative electrode carbon pores, fundamentally avoiding the generation of dendrites. At the same time, the stable structure of lithium manganese oxide makes its oxidation performance much lower than that of lithium cobalt oxide, and the decomposition temperature exceeds 100 ℃ of lithium cobalt oxide. Even if internal short circuits (punctures), external short circuits, and overcharging occur due to external forces, the danger of combustion and explosion caused by the precipitation of lithium metal can be completely avoided.
In addition, the use of lithium manganese oxide material can significantly reduce costs.
To improve the performance of existing safety control technologies, the first step is to improve the safety performance of lithium-ion battery cells, which is particularly important for large capacity batteries. Choose a diaphragm with good thermal shutdown performance. The function of the diaphragm is to isolate the positive and negative poles of the battery while allowing the passage of lithium ions. When the temperature rises, it is closed before the diaphragm melts, causing the internal resistance to rise to 2000 ohms and stopping the internal reaction.
When the internal pressure or temperature reaches the preset standard, the explosion-proof valve will open and begin to relieve pressure to prevent excessive accumulation of internal gas and deformation, ultimately causing the shell to burst.
Read recommendations:
Medical Equipment Cylindrical Lithium Ion Battery 3.7V
Why Panasonic NCR18650B 18650 Batteries Are a Top Choice for Industrial Applications
Last article:What are the good advantages of large capacity lithium batteries?solar battery for house
Next article:What is the fundamental reason for the ignition and explosion of polymer batteries.best batteries for solar power storage
related suggestion
lithium battery 12v 100ah
2023-03-20lithium trolling motor battery sales
2023-04-07lithium deep cycle marine battery manufacture
2023-04-07lithium trolling motor battery wholesaler
2023-03-22lithium ion golf cart batteries Production
2023-03-22solar energy storage manufacture
2023-03-2024v lifepo4 battery
2023-05-08solar powered electric generator
2023-05-08marine batteries for sale
2023-05-08lithium golf cart batteries price
2023-05-08lithium ion golf cart batteries
2023-05-08lifepo4 battery 12v 200ah
2023-05-0814650 Lithium Ion Battery for Electric Toothbrush
2023-02-14Home Energy Storage System 51.2V 150Ah LiFePo4 Battery Pack
2023-06-19HB-N300 300W Solar Power Station Black
2022-09-09Medical Equipment Cylindrical Lithium Ion Battery 3.7V
2023-02-1476.8V 105Ah Golf Cart LiFePo4 Battery Pack Waterproof Support CAN RS485 Bluetooth
2025-02-26What is hjt battery?
2022-11-04Lithium battery recycling technology is immature.portable power station solar
2023-05-26Choosing the Right 36V Battery Solution for Industrial and Commercial Applications
2025-03-14The working principle of iron lithium batteries.solar generator amazon
2023-07-20Understanding HD2C 18650 and Other High-Performance Lithium-Ion Batteries for Industrial Use
2025-03-13Advantages of polymer lithium batteries.lifepo4 battery 12v 200ah
2023-07-10What are the effects of long-term storage for customized lithium batteries.best battery for home inverter
2023-09-18Ultra -low temperature battery.lithium ion golf cart batteries Manufacturing
2023-03-24Analysis on the difference of characteristics between power lithium battery and ordinary lithium battery
2022-10-15Polymer lithium battery customization
2023-02-03