High-power lithium battery using method and apparatus and battery management system

Abstract

Embodiments of the present invention provide a high-power lithium battery using method and apparatus and a battery management system. The high-power lithium battery using method comprises setting a high-ratio discharging lower limit cutoff voltage of the high-power lithium battery to be greater than or equal to 2 volts. The embodiments of the present invention overcome prejudice in the prior art that it is safe only when a high-ratio discharging lower limit cutoff voltage of a high-power lithium battery is greater than 3 volts, and the high-ratio discharging lower limit cutoff voltage of the high-power lithium battery is reduced to be greater than 2 volts, thereby resolving a problem that the high-power lithium battery cannot discharge electric in a low-temperature environment during high-ratio usage, and improving user usage experience and satisfaction.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a method and device for using a high-power lithium battery and a battery management system. Background technique [0002] Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. With the development of science and technology, lithium batteries have now become mainstream batteries. [0003] The discharge lower limit cut-off voltage of lithium batteries is an important indicator of lithium batteries. The discharge lower limit cut-off voltage of the lithium battery means that after the lithium battery is discharged to a certain voltage, it is not suitable to continue to discharge, otherwise it will cause irreversible loss of part of the lithium battery power, and in severe cases, the battery will be completely damaged. [0004] For lithium cobalt oxide batteries, the l...

AI Technical Summary

Problems solved by technology

When the UAV flies in winter, the ambient temperature is very low, because of the limitation of the 3.0V lower limit cut-off voltage, it is easy for the UAV battery to fail to discharge due to the lower limit cut-off voltage, which will easily lead to the occurrence of crashes, serious Affected user experience and satisfaction

[0008] It can be seen that there is currently a problem that high-power lithium batteries cannot discharge electricity when they are used at high rates in low-temperature environments.

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