Electrode slice structure and battery module

Abstract

The invention provides an electrode slice structure and a battery module. The electrode slice structure comprises an aluminum electrode slice and a copper electrode slice, wherein the aluminum electrode slice is a disc form and is used for being electrically connected with a pole column, as a general positive output pole or a general negative output pole, of a battery of a battery module; the copper electrode slice is used for being connected with an external high-voltage connection terminal and comprises a disc base; the diameter of the copper electrode slice is smaller than the outer diameter of the aluminum electrode slice; the center axis of the copper electrode slice and the center axis of the aluminum electrode slice are coaxial lines; one side of the copper electrode slice is welded to the aluminum electrode slice while the other side of the copper electrode slice is screwed with the high-voltage connection terminal employing the center axis of the disc base as the center; and the battery module comprises the electrode slice structure which is respectively connected with the general positive output electrode and the general negative output pole. Therefore, the damage risks to a welding part and an electric connection part are greatly reduced; and the bonding strength and the stability between the electrode slice structure and the battery module and the high-voltage connection terminal are ensured; use of the plug-in high-voltage connection terminal is avoided; and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of battery packs, in particular to an electrode sheet structure and a battery module. Background technique [0002] With the requirements of low-carbon protection in modern society, power batteries are more and more widely used. The most notable feature of the application of power batteries in the fields of electric vehicles and energy storage power stations is the modular assembly to form battery modules. refer to Figure 1 to Figure 8 , the battery module includes: a plurality of batteries 1, stacked in sequence, and the poles 11 of the plurality of batteries 1 are correspondingly connected in series to form a battery pack, wherein the terminal positive pole of the pole 11 in series is used as the total positive output pole of the module The terminal negative poles connected in series with the poles 11 serve as the total negative output poles of the module; two end plates 2 are respectively located at bot...

AI Technical Summary

Problems solved by technology

[0007] According to the principle of ultrasonic welding, it can be known that multiple weldings adjacent to each other will interfere with each other, and the high-frequency vibration of the latter welding will destroy the strength of the previous joint; the previous joint will hinder the high-frequency vibration of the latter

And repeated welding also wastes man-hours and increases the wear and tear of the machine

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