What is the battery discharge cut-off voltage in general?
by:Vglory 2021-04-24
What is the discharge cut-off voltage of lithium batteries? Generally, a lithium battery has a working voltage of 3.7V and a termination voltage of 3.2V; a lithium iron phosphate battery has a working voltage of 3.26V and a termination voltage of 2.5V. The voltage at which a lithium battery overflows is called the termination charging voltage in the industry. According to the battery industry standard, the voltage is about 1.2 times the rated voltage. For example, for a 3.6V cell phone battery, the final charging voltage is 4.2~4.3V. The discharge termination voltage of lithium iron battery is basically around 3.3, and the discharge protection voltage setting of the internal protection board of the lithium battery is basically 2.5v. What is the appropriate setting for the discharge termination voltage of this lithium battery? According to the termination voltage of 2.5 of the protection board, will it not affect the capacity performance of the lithium battery or damage the lithium battery. With the continuous development of the current lithium battery industry, more and more devices use lithium batteries. In addition to the common consumer lithium batteries on the market, the market share of ternary lithium batteries and lithium iron phosphate batteries is relatively high. Generally speaking, the cell voltage of ternary lithium battery is 3.7 volts, and the voltage of lithium iron phosphate battery is 3.2 volts. For a small part of lithium battery packs, the price of lithium iron phosphate batteries may be lower than that of ternary lithium batteries, but they have large capacity. As far as the lithium battery pack is concerned, the ternary lithium battery is more cost-effective. However, as far as the current situation is concerned, the market price of lithium batteries is rather messy, and the quotations on the market are high or low, so everyone should pay attention when buying products. A friend asked what is the cut-off voltage of the lithium battery. Regarding the cut-off voltage of lithium batteries, it depends on the detailed capacity, and the cut-off voltage prices of lithium batteries with different specifications are different. When a lithium battery is discharged, its working voltage always changes with the continuation of time. Use the working voltage of the battery as the ordinate, discharge time, or capacity, or state of charge (SOC), or depth of discharge (DOD) The curve drawn by drawing the abscissa is called the discharge curve. To understand the discharge characteristic curve of the battery, we must first understand the voltage of the battery in principle. The internal resistance of lithium batteries increases with the increase of battery discharge current. This is mainly because the large discharge current makes the polarization trend of the battery increase, and the larger the discharge current, the more distinct the polarization trend. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of the important components and advantages of lithium battery electrolyte
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