Jig and method for assembling lithium batteries into metal frames

Abstract

The present invention provides a jig and method for assembling a lithium battery into a metal frame. The fixture includes: two aluminum plates of the same specification and arranged in alignment, the two aluminum plates are provided with a pair of through holes at the four corners for the limit screw to pass through; the limit screw is arranged below the two aluminum plates The bottom support bar; it is characterized in that: the bottom support bar is formed by vertical cross-linking of the vertical support bar and the horizontal support bar, and the horizontal support bar vertically passes through the aluminum plate in a movable manner, and the two aluminum plates are also opened There are pairs of through holes corresponding to the pair of through holes on the metal frame, and when the nut is tightened to the limit position of the limit screw, the clamp makes the metal frame tightly clamp the battery pack. According to the given operation mode, the assembly efficiency can be improved, personnel can be saved, and the equipment quality can be improved.

Description

Technical field [0001] The invention relates to the production field of battery processing equipment, and in particular to a clamp and method for assembling a lithium battery into a metal frame. Background technique [0002] As lithium batteries are gradually widely used in various fields, more demands are placed on the packaging and transportation of lithium batteries. Especially in electric vehicles and hybrid vehicles, due to the high power and high current requirements of batteries, series and parallel battery packs of high-power prismatic batteries are usually used. In order to tightly assemble the battery packs into the casing, honeycomb assembly is usually adopted. Or via a metal frame assembly method. Note that the square battery mentioned here refers to a rectangular battery, which is only in contrast to a round battery, and does not specifically refer to a square battery. [0003] Honeycomb assembly is often used in round battery packs. The resin is molded into a suppor...

AI Technical Summary

Problems solved by technology

Although this method can solve some of the above problems, it poses new problems to the assembly process, especially how to tighten the nuts at both ends of each limit screw.

In order to ensure the appropriate size and weight of the battery pack as a whole, the metal plates in the metal frame usually used are flexible. If the nuts cannot be tightened symmetrically, the metal plates will be twisted and deformed, and the metal plates of the clamped batteries will also be damaged. Case exerts torsional stress, affecting battery performance

The symmetrical tightening of nuts is currently achieved manually by two personnel, or by the cooperation of multiple robotic arms of an automatic machine tool. The former relies on the experience and real-time cooperation of personnel, and the assembly efficiency is not high, and the assembly quality is uneven. Uneven, in the production process, it is difficult to achieve a unified standard, and the quality cannot be guaranteed, and the latter is too expensive

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