1. The blocking current of the diaphragm plays a key role in
preventing the potential safety hazard of the battery. The diaphragm is a
protective band in the case of short circuit. When the diaphragm is at
about 130 degrees, the resistance will increase abruptly, thus
preventing the lithium ions from transferring between them. When the
diaphragm is above 130 degrees, the protective band is safer.
Improper battery use (such as short circuit, overcharge, etc.) which increases the temperature of the battery may increase the resistance of the diaphragm by 2 to 3 orders of magnitude. Diaphragm requires not only at about 130 ℃ can current interrupt, and require it at a higher temperature can maintain its soften integrity. The softening integrity of the high temperature is also important for the safety of the battery under long time overcharge or long time exposure to high temperature.
To prevent an internal short circuit, the diaphragm will not allow any dendrite to penetrate. If the failure is not instantaneous when the battery shortens internally, the diaphragm is the only device that can prevent the battery's heat from getting out of control. However, if the heating rate is too fast and the fault occurs in an instant, the diaphragm cannot act as a current breaker. If the heating rate is not high, the current blocking function of the diaphragm can control the heating rate and further prevent the battery heat from getting out of control.
he effect of the diaphragm is simply to delay an internal short circuit and cause the heat to run out of control. The diaphragm with high temperature softening integrity and current blocking function shall pass the internal short circuit test. Thin membranes used in high-capacity batteries must exhibit properties similar to thicker membranes. The mechanical strength loss of the diaphragm needs to be balanced by the battery design, and the transverse and longitudinal properties of the diaphragm must be consistent to ensure the safety of the battery in abnormal use.
2.Nick of battery steel shell: after the core is put into the shell, the battery shall be grooved to make the mark on the battery shell. When the fault occurs, the gas expands rapidly, breaks through the notch, and is released, protecting the battery from explosion.
Division our strong technical team can provide you with a full set of solutions of the lithium-ion battery, TOB new energy limited can provide a lithium-ion battery equipment, materials, lithium-ion battery project planning, manufacturing technology, plant program design and management system. We have excellent battery design capabilities and can design more professional and safer lithium batteries for you.
Improper battery use (such as short circuit, overcharge, etc.) which increases the temperature of the battery may increase the resistance of the diaphragm by 2 to 3 orders of magnitude. Diaphragm requires not only at about 130 ℃ can current interrupt, and require it at a higher temperature can maintain its soften integrity. The softening integrity of the high temperature is also important for the safety of the battery under long time overcharge or long time exposure to high temperature.
To prevent an internal short circuit, the diaphragm will not allow any dendrite to penetrate. If the failure is not instantaneous when the battery shortens internally, the diaphragm is the only device that can prevent the battery's heat from getting out of control. However, if the heating rate is too fast and the fault occurs in an instant, the diaphragm cannot act as a current breaker. If the heating rate is not high, the current blocking function of the diaphragm can control the heating rate and further prevent the battery heat from getting out of control.
he effect of the diaphragm is simply to delay an internal short circuit and cause the heat to run out of control. The diaphragm with high temperature softening integrity and current blocking function shall pass the internal short circuit test. Thin membranes used in high-capacity batteries must exhibit properties similar to thicker membranes. The mechanical strength loss of the diaphragm needs to be balanced by the battery design, and the transverse and longitudinal properties of the diaphragm must be consistent to ensure the safety of the battery in abnormal use.
2.Nick of battery steel shell: after the core is put into the shell, the battery shall be grooved to make the mark on the battery shell. When the fault occurs, the gas expands rapidly, breaks through the notch, and is released, protecting the battery from explosion.
Division our strong technical team can provide you with a full set of solutions of the lithium-ion battery, TOB new energy limited can provide a lithium-ion battery equipment, materials, lithium-ion battery project planning, manufacturing technology, plant program design and management system. We have excellent battery design capabilities and can design more professional and safer lithium batteries for you.
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