Lithium battery discharge over-current protection system

Abstract

The invention discloses a lithium battery discharge over-current protection system. The system comprises a lithium battery box. A linkage rod is movably inserted into a cylinder body. The linkage rodis fixedly connected with a limiting plate. One side of the limiting plate is provided with a first spring. The first spring sleeves the outside of the linkage rod. The upper end of the linkage rod isprovided with an electrode cover. The electrode cover sleeves an electrode of a lithium battery pack, and the lower end of the linkage rod is magnetically connected with an electromagnet. According to the invention, the electrode cover of the lithium battery is mounted on the linkage rod in the cylinder body; the linkage rod is adsorbed on the electromagnet; through the adsorption force of the electromagnet, the electrode cover covers the electrode of the lithium battery pack; the temperature in the battery cover is monitored through a temperature sensor; and when the temperature is too high,the electromagnet is switched off to lose magnetism, the electrode cover is bounced upwards by the elastic force of the first spring of the cylinder body, the electrode cover is separated from the electrode of the lithium battery pack, and therefore the lithium battery pack is protected against damage caused by too high temperature in the discharging process.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a lithium battery discharge overcurrent protection 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. In 1912, the lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M. S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become the mainstream now. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Li-ion batteries do not contain metallic lithium and are rechargeable. Lithium met...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a lithium battery discharge overcurrent protection system. The electrode cover of the lithium battery is installed on the linkage rod in the cylinder body, and the linkage rod is adsorbed on the electromagnet. Through the adsorption force of the electromagnet, the electrode cover On the electrodes of the lithium battery pack, the temperature in the battery cover is monitored by a temperature sensor. When the temperature is too high, the electromagnet disconnects the power supply and loses its magnetism. The electrodes of the lithium battery pack are separated to solve the problem of high cost in the prior art in the above-mentioned background technology

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