Novel cover plate and collector plate structure

Abstract

The utility model belongs to the technical field of new energy batteries, in particular relates to a novel cover plate and collector plate structure, and provides the following scheme aiming at the problems that in the prior art, most of tab treatment modes in the market are kneading modes, and the kneading end surfaces are compact, so that liquid injection infiltration is difficult to carry out, the battery processing time is increased, and the efficiency is lower. The device comprises a cover plate; the negative pole post is integrated in the cover plate; the anti-explosion valve is arranged at the top of the cover plate; according to the utility model, the liquid injection port adopts eccentric liquid injection, the cover plate is relatively common and low in cost, the liquid injection port is overlapped with the liquid guide port, and the electrolyte flows to the central hole of the battery cell through the liquid guide groove, so that the electrolyte permeation time can be greatly shortened, the battery cell can be prevented from being corroded, the battery cell can be prevented from being damaged, and the service life of the battery cell can be prolonged. And the structure is adaptive to the conventional technological process, the yield is high, the structure is simple, and the technology is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field especially relates to a novel cover plate and current collecting disc structure. BACKGROUND

[0002] In prior art, large cylindrical battery is a packaging form of lithium battery, has high energy density, high charging speed and safety and the like advantages, is especially suitable for being used in new energy automobile, especially medium and high end electric vehicle. The single capacity of large cylindrical battery is large, usually the outer diameter is 46mm, the height is 80mm or 95mm, this design can improve the energy density and charging speed of battery, simultaneously reduce production cost, in prior art, large cylindrical battery needs eccentric liquid injection for reducing cost and improving process efficiency, the current ear processing mode on the market is mostly rubbing flat mode, the rubbing flat end face is compact, so liquid injection infiltration is difficult to carry out, increases battery process time, and the efficiency is low;The center liquid injection structure on the market needs to make great changes to the pole position, although it can directly inject liquid into the center hole position of the battery cell, but increases incoming material defective rate, and also increases material BOM cost.

[0003] Therefore, the present application provides a novel cover plate and current collecting disc structure to solve the above problems. SUMMARY

[0004] The utility model discloses a novel cover plate and current collecting disc structure to solve the problem of the prior art that the current ear processing mode on the market is mostly rubbing flat mode, the rubbing flat end face is compact, so liquid injection infiltration is difficult to carry out, increases battery process time, and the efficiency is low.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A novel cover plate and current collecting disc structure, comprising a cover plate;

[0007] Negative pole, the negative pole is integrated in the cover plate;

[0008] Explosion-proof valve, the explosion-proof valve is arranged at the top of the cover plate;

[0009] Eccentric liquid injection hole, the eccentric liquid injection hole is arranged at the top of the cover plate, and the eccentric liquid injection hole is located at the left side of the explosion-proof valve.

[0010] As a preferred scheme of the utility model, the outer wall of the cover plate is provided with a conductive strip, and a liquid guide groove is arranged on the conductive strip.

[0011] As a preferred scheme of the utility model, a liquid guide hole is arranged on the conductive strip, and the liquid guide hole cooperates with the eccentric liquid injection hole and the liquid guide groove.

[0012] A current collecting disc structure, comprising

[0013] The current collector plate is designed as a flat plate, and the welding traces are five radial welding lines. Advantages

[0014] In the utility model, the liquid injection port is eccentric, the cover plate is common and low in price, the liquid injection port coincides with the liquid guide port, the electrolyte flows to the center hole of the battery cell through the liquid guide groove, the electrolyte penetration time can be greatly reduced, the liquid injection effect and efficiency are improved, the structure is suitable for conventional process flow, high in yield, simple in structure and process. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model discloses a cover plate expansion schematic diagram;

[0016] Figure 2 The utility model discloses a cover plate expansion bottom schematic diagram;

[0017] Figure 3 The utility model discloses a cover plate section schematic diagram;

[0018] Figure 4 The utility model discloses an electrolyte flow schematic diagram.

[0019] In the drawing: 1, cover plate;2, negative pole;3, explosion-proof valve;4, eccentric liquid injection hole;5, conductive band;6, liquid guide hole;7, liquid guide groove;8, current collector plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. EMBODIMENT

[0021] Reference Figures 1-4 A novel cover plate and current collector plate structure, comprising a cover plate 1;

[0022] Negative pole 2, negative pole 2 is integrated in cover plate 1;

[0023] Explosion-proof valve 3, explosion-proof valve 3 is arranged at the top of cover plate 1;

[0024] Eccentric liquid injection hole 4, eccentric liquid injection hole 4 is arranged at the top of cover plate 1, and eccentric liquid injection hole 4 is located at the left side of explosion-proof valve 3.

[0025] As a preferred scheme of the utility model, the outer wall of cover plate 1 is provided with conductive band 5, and the conductive band 5 is provided with liquid guide groove 7.

[0026] As a preferred scheme of the utility model, the conductive band 5 is provided with a liquid guide hole 6, and the liquid guide hole 6 cooperates with the eccentric liquid injection hole 4 and the liquid guide groove 7.

[0027] A current collecting plate structure comprises

[0028] The current collecting plate 8 is designed as a flat plate, and the welding traces are five radial welding lines.

[0029] The utility model discloses a working principle: through with one negative pole post 2, one explosion -proof valve 3 and one eccentric liquid injection hole 4 are integrated on the cover plate 1, the cover plate 1 is negative side cover plate, simultaneously on the conductive band 5 design has the liquid guide hole 6 with the liquid guide groove 7, and the liquid guide hole 6 cooperates with the liquid guide groove 7 and the eccentric liquid injection hole 4, and the liquid guide groove 7 is folded on one side for the current collecting plate 8, and the liquid guide groove 7 forms electrolyte passage, guides electrolyte to directly enter the battery core center hole, and the current collecting plate 8 is designed as a flat plate, and the welding traces are five radial welding lines, along the current collecting plate 8 end face folding mark carries out first folding, and the conductive band 5 and the cover plate 1 connecting place along the folding mark carries out second folding, at this time, the eccentric liquid injection hole 4 of cover plate 1 and the liquid guide hole 6 on the conductive band 5 coincide, after electrolyte enters the battery through the eccentric liquid injection hole 4 and the liquid guide hole 6, the battery is cylindrical battery, will flow to the liquid guide groove 7 first, and electrolyte flows to the battery core center hole through the liquid guide groove 7.

[0030] The above only for the utility model preferred specific implementation, but the protection scope of the utility model is not limited to this, any skilled in the art person in the utility model disclosed technical range, according to the utility model technical scheme and the utility model concept add up to equivalent replacement or change, all should cover in the protection scope of the utility model.

Claims

1. A novel cover plate and current collector plate structure, characterized in that, Comprising Cover plate (1); Negative pole (2), integrated in the cover plate (1); Explosion-proof valve (3), provided on the top of the cover plate (1); Eccentric liquid injection hole (4), provided on the top of the cover plate (1), and located on the left side of the explosion-proof valve (3).

2. A novel cover plate and current collector plate structure according to claim 1, characterized in that, The outer wall of the cover plate (1) is provided with a conductive strip (5), and the conductive strip (5) is provided with a liquid guide groove (7).

3. A novel cover plate and current collector plate structure according to claim 2, characterized in that, The conductive strip (5) is provided with a liquid guide hole (6), and the liquid guide hole (6) cooperates with the eccentric liquid injection hole (4) and the liquid guide groove (7).

4. A current collector plate structure characterized by comprising: Comprising Current collecting plate (8), designed as a flat plate, and the welding trace is five radial welding lines.

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