A lithium-ion battery pack provided with an overload protection device and its preparation process

Abstract

The invention discloses a lithium-ion battery pack provided with an overload protection device and a preparation process thereof, comprising a box cover, a handle, a material injection port, a box body, an air inlet, a filter screen, a thermometer, an exhaust port, a lithium battery, Sealing layer, first fixing rod, second fixing rod, dry powder layer, slide rail, fan, limit ring, first fixing block, second fixing block, locking block, second groove, third groove, slide blocks and through holes, the invention draws the cold air from the outside into the box through the motor, and blows the heat from the lithium battery pack out from the air outlet, which is conducive to dissipating a large amount of heat generated by the overload of the lithium battery pack in time, through the box cover. The design of the sealing layer and the dry powder layer avoids the fire caused by the lithium battery pack and improves the safety of the device. By inserting the slider from the third groove on the slide rail and using the locking block, the lithium battery is fully protected. Quick assembly, and convenient disassembly after assembly, greatly improving the practicability of the device.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium ion battery pack provided with an overload protection device and a preparation process thereof. Background technique [0002] "Lithium battery" is a kind of battery that uses lithium metal or lithium alloy as positive / negative electrode material and uses non-aqueous electrolyte solution. 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. [0003] Lithium batteries have been widely used in all aspects of life due to their excellent performance, but single-cell lithium batteries have less battery current and voltage during use, so lithium batteries need to be connected in series or para...

AI Technical Summary

Problems solved by technology

[0003] Lithium batteries are widely used in all aspects of life due to their excellent performance, but the battery current and voltage of a single lithium battery are less during use, so it is necessary to connect lithium batteries in series or in parallel to form a battery pack. The process of splicing into battery packs is generally glued or welded, which is expensive, and cannot be disassembled after fixing, and has low practicability. Lithium-ion battery packs may be overloaded during use, resulting in a large number of batteries. Heat generation shortens the service life of the battery, and in severe cases, it may even explode and cause a fire. Moreover, today's battery packs do not have their own fire extinguishing device. Once a fire occurs, it will rapidly expand in a short time, which will damage people's property and lives. great threat to security

Images