CN215578622U

CN215578622U - Lithium battery positive and negative plate device

Info

Publication number: CN215578622U
Application number: CN202121795921.3U
Authority: CN
Inventors: 高峰; 赵冬梅; 陈雨; 张要枫
Original assignee: Hubei Titanium Era New Energy Co Ltd
Current assignee: Hubei Titanium Era New Energy Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-01-18
Anticipated expiration: 2031-08-03

Abstract

A positive and negative plate device of a lithium battery comprises a plate main body, wherein the plate main body is of a star-shaped structure, a mounting groove and a flow guide hole are formed in the center of the plate main body, flow guide grooves are formed in the lower end face of the plate main body, and the flow guide grooves are annularly and symmetrically distributed around the axis of the plate main body; the utility model adopts a brand-new polar plate structure, can improve the uniformity of the electrolyte in the battery, and can ensure that the electrolyte can quickly flow into the battery core during filling, and the limiting mechanism on the polar plate also improves the accuracy of the battery during assembly and improves the production efficiency of the battery.

Description

Lithium battery positive and negative plate device

Technical Field

The utility model belongs to the technical field of new energy batteries, and particularly relates to a positive and negative plate device of a lithium battery.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the chemical characteristics of the metallic lithium are very active, the requirements on the external environment for processing, storing and using the metallic lithium are very high. Therefore, lithium batteries have not been used for a long time. However, with the development of modern science and technology, lithium batteries have become mainstream and are widely used in the fields of electric automobiles, electric tools, household appliances, war industry, aerospace and the like.

In the production process of the lithium battery, the liquid injection process is one of important processes in the production of the battery, and the electrolyte in the battery cannot be fully utilized and cannot fully flow into the battery due to no grooves in the positive and negative electrode plates of the traditional lithium battery, so that the electrolyte is not uniformly distributed, and the local resistance in the battery is larger; in addition, when the positive and negative electrode plates without the groove structure are injected with electrolyte, the time for the electrolyte to flow into the battery is usually long, so that the electrolyte injection time is long, and the production efficiency of the battery is low.

Disclosure of Invention

In view of the technical problems in the background art, the positive and negative pole plate device for the lithium battery provided by the utility model adopts a brand-new pole plate structure, can improve the uniformity of electrolyte in the battery, enables the electrolyte to rapidly flow into a battery core during filling, and improves the accuracy of battery assembly and the production efficiency of the battery by the limiting mechanism on the pole plate.

In order to solve the technical problems, the utility model adopts the following technical scheme to realize:

the utility model provides a positive negative plate device of lithium cell, is the star structure including the polar plate main part, and the central point of polar plate main part puts and has seted up mounting groove and water conservancy diversion hole, and the guiding gutter has been seted up to the lower terminal surface of polar plate main part, the guiding gutter is annular symmetric distribution around the axle center of polar plate main part.

In the preferred scheme, the up end of polar plate main part welds each other with apron and utmost point post, and the joint is in the mounting groove during utmost point post welding.

In the preferred scheme, the pole is provided with a liquid injection port which is communicated with the flow guide hole on the pole plate main body.

In the preferred scheme, the lower end face of the pole plate main body is provided with a central tube, and the central tube is clamped with the pole plate main body through a connecting column.

In the preferred scheme, a clamping structure is arranged in the flow guide hole, and the connecting column is clamped with the inner wall of the flow guide hole and used for fixing the position between the polar plate main body and the central tube.

This patent can reach following beneficial effect:

1. the battery polar plate changes the existing polar plate structure, and can ensure that the electrolyte inside the battery is distributed more uniformly by adopting a star-shaped structure, thereby ensuring the uniformity of the internal resistance of the battery;

2. the electrolyte guide groove arranged at the bottom of the polar plate can ensure that the electrolyte can rapidly and uniformly flow into the battery, so that the electrolyte injection efficiency of the electrolyte is improved;

3. be equipped with positioner between each part of polar plate and battery, make things convenient for equipment and location between each part, improved the whole production efficiency of battery.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic top view of a plate body according to the present invention;

FIG. 2 is a schematic bottom view of the plate body of the present invention;

FIG. 3 is an exploded view of the pole plate mounting location of the present invention;

fig. 4 is a sectional view of a pole plate mounting site of the present invention.

In the figure: the polar plate comprises a polar plate main body 1, a mounting groove 2, a diversion trench 3, a diversion hole 4, a polar column 5, a connecting column 7 and a central pipe 8.

Detailed Description

As shown in fig. 1 to 4, a positive and negative electrode plate device of a lithium battery comprises an electrode plate main body 1, wherein the electrode plate main body 1 is of a star-shaped structure, a mounting groove 2 is formed in the center of the electrode plate main body 1, the mounting groove 2 is used for fixing the position between an electrode post 5 and the electrode plate main body 1, a flow guide hole 4 is further formed in the lower end face of the electrode plate main body 1, a flow guide groove 3 is formed in the lower end face of the electrode plate main body 1, the flow guide groove 3 is annularly and symmetrically distributed around the axis of the electrode plate main body 1, and the flow guide groove 3 can promote the fluidity of electrolyte inside the battery.

Preferred scheme is as shown in fig. 1 and fig. 3, the up end of polar plate main part 1 welds each other with apron 6 and utmost point post 5, and the joint is in mounting groove 2 when utmost point post 5 welds, through this structure, can prevent that utmost point post 5 from rocking after the installation finishes, has improved utmost point post 5's stability.

In a preferred scheme, as shown in fig. 1 and 4, an injection port is arranged on the pole 5, the injection port is communicated with the diversion hole 4 on the pole plate main body 1, and after the electrolyte is injected into the pole 5, the electrolyte can rapidly flow into the battery through the pole 5 because the pole 5 is communicated with the diversion hole 4 on the pole plate main body 1.

As shown in fig. 2 and 3, a central tube 8 is arranged on the lower end surface of the plate body 1, and the central tube 8 is clamped with the plate body 1 by a connecting column 7; be equipped with the screens structure in water conservancy diversion hole 4, the position between fixed polar plate main part 1 and the center tube 8 in water conservancy diversion hole 4 is connected to spliced pole 7 joint, and through this structure, the position of center tube 8 can keep fixed after the battery equipment finishes, prevents to rock the center tube 8 that leads to because of the outside not hard up or slope, has improved the stability and the security of battery operation.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. The utility model provides a lithium cell positive and negative polar plate device, includes polar plate main part (1), its characterized in that: polar plate main part (1) is the star structure, and mounting groove (2) and water conservancy diversion hole (4) have been seted up to the central point of polar plate main part (1) puts, and guiding gutter (3) have been seted up to the lower terminal surface of polar plate main part (1), guiding gutter (3) are annular symmetric distribution around the axle center of polar plate main part (1).

2. The positive and negative plate device of a lithium battery as claimed in claim 1, wherein: the upper end face of the polar plate main body (1) is mutually welded with the cover plate (6) and the polar column (5), and the polar column (5) is clamped in the mounting groove (2) during welding.

3. The positive and negative plate device of a lithium battery as claimed in claim 2, wherein: the pole column (5) is provided with a liquid injection port which is communicated with the flow guide hole (4) on the pole plate main body (1).

4. The positive and negative plate device of a lithium battery as claimed in claim 1, wherein: the lower terminal surface of polar plate main part (1) is equipped with center tube (8), center tube (8) utilize spliced pole (7) and polar plate main part (1) joint.

5. The positive and negative plate device of a lithium battery as claimed in claim 1, wherein: a clamping structure is arranged in the flow guide hole (4), and the connecting column (7) is clamped in the flow guide hole (4) and fixes the position between the polar plate main body (1) and the central tube (8).