Battery assembly method

Abstract

The invention discloses a battery assembly method, which comprises the steps of: a) placing an insulating space ring on the upper surfaces of ends of a battery core in a battery shell, penetrating polar lugs of the ends of the battery core through pores on the insulating space ring and extending the polar lugs out to the upper surface of the insulating space ring; b) bending the polar lugs close to the insulating space ring, fixing an elastic conductive ring on the upper surface of the insulating space ring and making the elastic conductive ring tightly press the polar lugs; and c) pressing abattery cover plate on the upper surface of the elastic conductive ring and sealing the periphery of the battery cover plate with the battery shell, wherein the step c) is implemented through the steps of: c1) placing an elastic pressing piece on the upper surface of the elastic conductive ring; c2) firmly locking the elastic pressing piece and the elastic conductive ring on the insulating space ring through attachment clips so as to tightly press the elastic conductive ring on the upper surface of the insulating space ring; and c3) connecting the cover plate and the attachment clips and sealing the periphery of the battery cover plate with the battery shell. The invention ensures that the polar lugs and the cover plate are electrically connected through the simple assembly method, does not need welding, and has convenient assembly and good connection performance.

Description

technical field [0001] The invention relates to the field of battery manufacturing, in particular to a battery assembly method. Background technique [0002] A lithium-ion secondary battery consists of a negative plate, a positive plate, an electrolyte, and a separator interposed between the positive and negative plates to prevent short circuits. The positive plate and the negative plate are made into thin plates or foils, and then the electrode plates and the intervening separator are stacked in sequence or spirally wound to form a battery core, and then the battery core is filled with stainless steel, nickel-plated iron, and aluminum metal Electrolyte is poured into the casing or laminated flexible film battery container, and sealed to form a battery. Wherein, the electrical conduction between the battery core and the outside world is realized through the connection between the lug connected to the pole plate and the pole or the cover plate. [0003] The current common c...

AI Technical Summary

Problems solved by technology

However, in the production of batteries, this method is complicated to operate, especially the splash of metal particles is easy to be generated during fusion welding, which has a great impact on the safety and performance of the battery cell, and the interpenetration welding will also be caused by mechanical vibration and inconvenient operation. The connection between the tab and the plate is strained and affects the performance of the battery

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