New energy lithium battery cover plate structure

Abstract

The utility model discloses a new energy lithium battery cover plate structure, which relates to the technical field of lithium battery cover plates and comprises a cover plate main body, column holes are respectively arranged at two ends of the cover plate main body, and a positive pole and a negative pole are respectively arranged in the two column holes. The outer end of the positive pole is sleeved with a positive weak guide plate fixedly mounted on the outer side of the pole hole, and a positive riveting plate sleeving the positive pole is mounted in the positive weak guide plate; the outer end of the negative pole is sleeved with a negative insulating plate fixedly mounted on the outer side of the pole hole, a negative riveting plate sleeving the negative pole is mounted in the negative insulating plate, and plastic sheets integrally connected with the positive pole and the negative pole are arranged at the lower parts of the positive pole and the negative pole; by arranging the sealing rings in the two column holes, the sealing performance between the positive electrode column and the column holes and between the negative electrode column and the column holes can be enhanced, and by arranging the plastic sheets at the bottoms of the positive electrode column and the negative electrode column, the insulation effect can be further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery cover plates, and in particular to a new energy lithium battery cover plate structure. Background Art

[0002] The lithium battery cover is an important component of the lithium battery. Its main function is to seal the battery, prevent leakage of electrolyte, and avoid safety accidents. Lithium batteries will produce certain gases during the charging and discharging process. The cover helps to stabilize the pressure inside the battery and prevent the battery from swelling or rupture. The lithium battery cover helps to balance the electrochemical reaction to a certain extent, improving the stability and service life of the battery. The cover can prevent moisture, dust and other impurities in the external environment from entering the battery, maintaining the purity and stability of the battery.

[0003] The existing lithium battery cover plate usually has a simple structure. Post holes are respectively set at both ends of the cover plate body, and the positive and negative poles are respectively set in the post holes and equipped with sealing rings for sealing. However, if the sealing effect is only achieved by the sealing ring, once the sealing ring ages, leakage is likely to occur. Therefore, its sealing performance still needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a new energy lithium battery cover structure to solve the following technical problems:

[0005] How to improve the sealing of lithium battery cover?

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A new energy lithium battery cover plate structure, comprising a cover plate body, wherein both ends of the cover plate body are respectively provided with column holes, and a positive pole column and a negative pole column are respectively installed in the two column holes, characterized in that the outer end of the positive pole column is sleeved with a positive pole weak guide plate fixedly installed on the outer side of the column hole, and a positive pole riveting plate sleeved on the positive pole column is installed in the positive pole weak guide plate;

[0008] The outer end of the negative pole is sleeved with a negative insulating plate fixedly installed on the outside of the column hole, and a negative riveting plate sleeved on the negative pole is installed in the negative insulating plate. The lower part of the positive pole and the negative pole are both provided with a plastic sheet connected to the positive weak conductor as a whole.

[0009] As a further solution of the utility model: sealing rings are provided in the two column holes.

[0010] As a further solution of the utility model: one end of one of the sealing rings is arranged on the side of the positive electrode weak guide plate close to the positive electrode riveting plate, and the other end is arranged on the side of the cover plate body away from the positive electrode weak guide plate.

[0011] As a further solution of the utility model: one end of the other sealing ring is arranged on the side of the negative electrode insulation plate close to the negative electrode riveting plate, and the other end is arranged on the side of the cover plate body away from the negative electrode insulation plate.

[0012] As a further solution of the utility model: a protective patch is provided on the surface of the cover plate body.

[0013] As a further solution of the utility model: the protective patch is arranged at the center of the surface of the cover plate body.

[0014] As a further solution of the utility model: an explosion-proof valve is arranged inside the protection patch.

[0015] Beneficial effects of the utility model:

[0016] The utility model arranges a positive electrode weak guide plate outside the positive electrode column and a negative electrode riveting plate outside the negative electrode column, thereby enhancing the installation strength of the positive electrode column and the negative electrode column to prevent the positive electrode column or the negative electrode column from loosening due to long-term use; by arranging sealing rings in the two column holes, the sealing between the positive electrode column and the column hole and between the negative electrode column and the column hole can be enhanced, and the sealing ring is built-in to extend its service life; by arranging plastic sheets at the bottom of the positive electrode column and the negative electrode column, the insulation and support effects can be further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a structural schematic diagram of a new energy lithium battery cover structure in one embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A cross-sectional view of a new energy lithium battery cover structure;

[0020] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of A.

[0021] In the figure: 1. Positive pole; 2. Positive riveting plate; 3. Positive weak guide plate; 4. Cover plate body; 5. Plastic sheet; 6. Protective patch; 7. Explosion-proof valve; 8. Negative pole; 9. Negative riveting plate; 10. Negative insulating plate; 11. Sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 As shown, the utility model discloses a new energy lithium battery cover structure, including a cover body 4. The shape of the cover body 4 is not specifically limited and can be formulated according to actual application requirements. For example, in an embodiment of the utility model, the cover body 4 is rectangular, with inner and outer sides respectively; column holes are respectively opened at both ends of the cover body 4, and the two column holes are symmetrically distributed about the center line of the cover body 4; the positive electrode column 1 and the negative electrode column 8 are respectively installed in the two column holes.

[0024] Among them, a positive weak conductor plate 3 is also fixedly installed on the outside of the column hole in which the positive pole column 1 is installed, and a cover plate body 4 is fixedly installed on the outside of the positive weak conductor plate 3. The positive weak conductor plate 3 and the cover plate body 4 are both provided with a plug hole corresponding to the column hole at the center, and the inner end of the positive pole column 1 is clamped on the inner side of the column hole, and the outer end is fixedly penetrated in the through hole of the positive weak conductor plate 3 and the cover plate body 4; a negative insulating plate 10 is also fixedly installed on the outside of the column hole in which the negative pole column 8 is installed, and a negative riveting plate 9 is fixedly installed on the outside of the negative insulating plate 10, and a through hole corresponding to the column hole is opened at the center of the negative insulating plate 10 and the negative riveting plate 9, the inner end of the negative pole column 8 is clamped on the inner side of the column hole, and the outer end is fixedly penetrated in the through hole of the negative insulating plate 10 and the negative riveting plate 9.

[0025] A sealing ring 11 is provided in each of the two column holes. For the column hole with the positive pole 1 installed, one end of the sealing ring 11 in the column hole is arranged on the side of the positive weak guide plate 3 close to the positive riveting plate 2, and the other end is arranged on the side of the cover body 4 away from the positive weak guide plate 3; for the column hole with the negative pole 8 installed, one end of the sealing ring 11 in the column hole is arranged on the side of the negative insulating plate 10 close to the negative riveting plate 9, and the other end is arranged on the side of the cover body 4 away from the negative insulating plate 10; the sealing ring 11 is located on the inner side of the positive weak guide plate 3 and will not be exposed to the outside, so it can avoid aging damage caused by interference from the external environment, can ensure its sealing performance, and extend its service life. At the same time, the sealing ring 11 is connected to the positive electrode weak conductor 3 to form an integrated weak conductive component. Since the positive electrode weak conductor 3 is a weak conductive plastic part, it has a certain hardness. It is set between the cover body 4 and the positive electrode riveting plate 2, which can make the assembly parts more tightly combined, enhance the bonding strength, and avoid the problem of loosening during long-term use; similarly, the sealing ring 11 is connected to the negative electrode insulating plate 10 to form an integrated insulating component. Since the negative electrode insulating plate 10 is an insulating plastic part, it has a certain hardness. It is set between the cover body 4 and the negative electrode riveting plate 9, which can make the assembly parts more tightly combined, enhance the bonding strength, and avoid the problem of loosening during long-term use.

[0026] A plastic sheet 5 connected to the cover body 4 is provided at the lower part of the positive electrode column 1 and the negative electrode column 8 to enhance the insulation effect. The plastic sheet 5 is connected between the top wall and the side wall of the cover body 4, and can also enhance the strength of the cover body 4, thereby achieving a good supporting effect.

[0027] A protective patch 6 is provided at the center of the surface of the cover body 4, and an explosion-proof valve 7 is provided inside the protective patch 6 to prevent the lithium battery from exploding.

[0028] The working principle of this utility model:

[0029] By arranging a positive riveting plate 2 and a positive weak conductor 3 outside the positive pole 1, and arranging a negative riveting plate 9 and a negative insulating plate 10 outside the negative pole 8, the installation strength of the positive pole 1 and the negative pole 8 can be enhanced to prevent the positive pole 1 or the negative pole 8 from loosening due to long-term use; by arranging a sealing ring 11 in the two column holes, the sealing between the positive pole 1 and the column hole and between the negative pole 8 and the column hole can be enhanced, and by arranging a plastic sheet 5 at the bottom of the positive pole 1 and the negative pole 8, the insulation and sealing effects can be further enhanced.

[0030] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A new energy lithium battery cover structure, comprising a cover body (4), wherein both ends of the cover body (4) are provided with column holes, and a positive electrode column (1) and a negative electrode column (8) are respectively installed in the two column holes, characterized in that: The outer end of the positive electrode column (1) is sleeved with a positive electrode weak guide plate (3) fixedly mounted on the outside of the column hole, and the positive electrode weak guide plate (3) is installed with a positive electrode riveting plate (2) sleeved on the positive electrode column (1); The outer end of the negative pole column (8) is sleeved with a negative insulating plate (10) fixedly mounted on the outside of the column hole, and a negative riveting plate (9) sleeved on the negative pole column (8) is installed in the negative insulating plate (10). The lower parts of the positive pole column (1) and the negative pole column (8) are provided with a plastic sheet (5) connected to the positive pole column (1) and the negative pole column (8) as a whole.

2. The new energy lithium battery cover structure according to claim 1, characterized in that: Sealing rings (11) are provided in the two column holes.

3. The new energy lithium battery cover structure according to claim 2, characterized in that: One end of one of the sealing rings (11) is arranged on a side of the positive electrode weak guide plate (3) close to the positive electrode riveting plate (2), and the other end is arranged on a side of the cover plate body (4) away from the positive electrode weak guide plate (3).

4. The new energy lithium battery cover structure according to claim 3, characterized in that: One end of the other sealing ring (11) is arranged on a side of the negative electrode insulation plate (10) close to the negative electrode riveting plate (9), and the other end is arranged on a side of the cover plate body (4) away from the negative electrode insulation plate (10).

5. The new energy lithium battery cover structure according to claim 1, characterized in that: A protective patch (6) is provided on the surface of the cover plate body (4).

6. The new energy lithium battery cover structure according to claim 5, characterized in that: The protective patch (6) is arranged at the center of the surface of the cover plate body (4).

7. The new energy lithium battery cover structure according to claim 6, characterized in that: An explosion-proof valve (7) is arranged inside the protective patch (6).

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