Soft package lithium manganate battery with anti-overcharge function

Abstract

The invention discloses a soft package lithium manganate battery with an anti-overcharge function, and relates to the technical field of battery protection. The soft package lithium manganate battery with the anti-overcharge function comprises a protective shell, wherein a partition plate is fixed at the bottom of the inner wall of the protective shell. According to the soft-package lithium manganate battery with the anti-overcharge function, in the charging process of the battery, the electromagnet formed by combining the wire and the iron core can control the position of the power-off mechanism, meanwhile, the temperature of the soft-package lithium manganate battery block can be increased, and if an overcharge phenomenon occurs, the temperature of the soft-package lithium manganate battery block can be further increased. The increased temperature enables gas in the thermal expansion air bag to be heated and expanded, the thermal expansion air bag is matched with the power-off mechanism to enable the wire switch to be switched off, then the wire stops conducting, at the moment, series connection between the two soft-package lithium manganate battery blocks is in an open-circuit state, and therefore charging cannot be continued; and the phenomena of battery combustion and explosion caused by continuous overcharge of the battery are prevented.

Description

technical field [0001] The invention relates to the technical field of battery protection, in particular to a soft-packed lithium manganate battery with the function of preventing overcharging. Background technique [0002] Lithium manganate battery refers to a battery that uses lithium manganate material as the positive electrode. The nominal voltage of lithium manganate battery is 2.5~4.2v. Lithium manganate battery is widely used because of its low cost and good safety. [0003] Existing lithium manganese oxide batteries are usually used in new energy vehicles or other mechanical equipment that require power storage, but this kind of battery is prone to overcharging during charging, which will cause the battery to overheat, and even cause the battery to burn and explode. , There is a big potential safety hazard. Although the battery overcharge phenomenon can be avoided by connecting the temperature control switch in series in the battery, it will consume the power of the ...

AI Technical Summary

Problems solved by technology

[0003] Existing lithium manganate batteries are usually used in new energy vehicles or other mechanical equipment that require power storage, but this kind of battery is prone to overcharging during the charging process, which will cause the battery to overheat, and even cause the battery to burn and explode. , there is a large potential safety hazard. Although the temperature control switch can be connected in series to the battery to avoid the phenomenon of battery overcharging, it will consume battery power and reduce the battery life effect.

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