Lithium ion battery magnetic control switch and control method thereof

Abstract

The invention relates to the technical field of battery magnetic control switches, and discloses a lithium ion battery magnetic control switch and a control method thereof. The lithium ion battery magnetic control switch comprises a lithium ion battery, the positive electrode end of the lithium ion battery is provided with a tab, and the tab of the positive electrode end is electrically connectedwith a switch cap which comprises a switch cap upper part and a switch cap lower part; and a conductive block is arranged at the lower part of the switch cap. A first iron core is inserted into a battery cell of the lithium ion battery, spiral current is generated during charging and discharging of the lithium ion battery, and a first magnetic field is formed. A second iron core is arranged between the switch cap upper portion and the switch cap lower portion, a wire winding is wound on the second iron core, and a second magnetic field is formed after the wire winding is powered on. The magnetic pole direction of the first magnetic field is determined by the spiral current flow direction, whether the second iron core is attracted to the conductive block or not is determined by controllingthe magnetic poles of the first magnetic field and the second magnetic field to be the same or different, charging and discharging of the lithium ion battery are controlled, and real-time protection is achieved.

Description

technical field [0001] The invention relates to the technical field of battery magnetic control switches, in particular to a lithium ion battery magnetic control switch and a control method thereof. Background technique [0002] At present, with the research and application of lithium-ion batteries, lithium-ion battery technology has been greatly improved. Lithium-ion batteries are widely used, such as vacuum cleaners for daily use, robots for industrial applications, and light-duty power aspect. At the same time, lithium-ion batteries have always been troubled in terms of safety, especially in terms of lithium-ion battery safety accidents. There are many reasons for lithium-ion battery safety accidents, and the more common ones are battery materials, battery overcharging, internal short circuits, and external circuits. Problems such as short circuit are often caused by an external short circuit that causes the battery cell to explode and catch fire. In the existing market...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a lithium-ion battery magnetic control switch and its control method, aiming to solve the problem in the prior art that the external circuit of the load end of the lithium-ion battery is short-circuited to cause a fire or explosion safety accident, and the lithium-ion battery Safety issues due to overcharging during charging

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