Method for designing lithium battery protection circuit

Abstract

The invention discloses a method for designing a lithium battery protection circuit. A central processor is included. An input end of the central processor is electrically connected to output ends ofa seven-way voltage conversion circuit and a power supply circuit, and the seven-way voltage conversion circuit is electrically connected to a DC power supply and a PTC resistor. The PTC resistor is electrically connected to a positive adjustable base bias power supply. An over-charge control end of the central processor is connected to a first metal-oxide-semiconductor-field-effect transistor, and an over-discharge control end of the central processor is connected with a second metal-oxide-semiconductor-field-effect transistor, and the invention relates to the technical field of lithium battery protection. The method has the advantages of relatively perfect functions and a simple circuit structure, the problem that an integrated circuit chip on the market is used to make a protection circuit at present and the function of the protection circuit is relatively single is solved, and inflexible use is greatly avoided.

Description

technical field [0001] The invention relates to the technical field of lithium battery protection, in particular to a design method for a lithium battery protection circuit. Background technique [0002] Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, Lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have become the mainstream now. [0003] In recent years, the rapid development of portable electronic products has promoted the upgrading of battery technology. Lithium-ion batteries have quickly become mainstream battery products in the market due to their high energy density, long life, low self-discharge rate, and no pollution. [0004] I...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a lithium battery protection circuit design method, which solves the problem that the current integrated circuit chip on the market is used to make the protection circuit, the function of the protection circuit is relatively single, and the use is not flexible enough.

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