Lithium battery and assembling method thereof

Abstract

The embodiment of the invention discloses a lithium battery which comprises a shell, wherein both ends of the shell are open to form two opening ends; one opening end is connected and matched with an anode cover board; the other opening end is connected and matched with a cathode cover board; a battery pole rod body is coated in the shell; the winding initial position of the battery pole rod body is connected with a middle bracket tube; the middle bracket tube runs through the battery pole rod body; the anode of the battery pole rod body is connected with the anode cover board through one end of the middle bracket tube to form an anode end of the lithium battery; and the cathode of the battery pole rod body is connected with the cathode cover board through the other end of the middle bracket tube to form a cathode end of the lithium battery. The embodiment of the invention also discloses an assembling method of the lithium battery. The lithium battery is in a stud structure and has a low self-discharge rate, strong current conveyance capacity and high battery comprehensive performance. Moreover, the lithium battery has a simple assembling process, a simple manufacturing process and a low cost.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium battery and an assembly method thereof. Background technique [0002] Lithium battery is a kind of battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aqueous electrolyte solution; lithium battery is mainly used in electric vehicles (buses, cars, etc.), power station energy storage (solar energy, wind energy, power station peak regulation, etc.) , mobile network base station power supply, UPS power supply (Uninterruptible Power Supply, uninterruptible power supply) and other fields. [0003] Existing lithium batteries mainly include the following structures, one of which is: large cube structure, the shell can be made of steel, aluminum, soft package, plastic and other materials, and the battery pole body covered in the shell generally adopts multi-pole It is formed by lamination, winding or parallel connection of multiple...

AI Technical Summary

Problems solved by technology

The inventors have found that, for a cylindrical battery with a metal casing, the positive and negative electrodes outside the battery are directly drawn out. When used in combination, it is necessary to rely on spot-welded metal connecting pieces to realize the series and parallel connection of the batteries at the positive and negative electrodes; Short circuit, when used in combination, external protection measures need to be taken during the assembly process, and the battery pole body is fixed by punching slots or internal shape devices. The operation is complicated, resulting in high cost, low reliability, and difficult maintenance of cylindrical batteries with metal casings

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